From bb061708d5aa83579f213bdfb67253f7027217c3 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Fri, 13 Apr 2012 18:24:39 +0200 Subject: udev: move libudev, gudev to src/; move gudev/docs/, udev/docs/ to to docs/ --- src/gudev/.gitignore | 9 + src/gudev/gjs-example.js | 75 ++ src/gudev/gudev-1.0.pc.in | 11 + src/gudev/gudev.h | 33 + src/gudev/gudevclient.c | 527 +++++++++ src/gudev/gudevclient.h | 100 ++ src/gudev/gudevdevice.c | 963 +++++++++++++++++ src/gudev/gudevdevice.h | 128 +++ src/gudev/gudevenumerator.c | 431 ++++++++ src/gudev/gudevenumerator.h | 107 ++ src/gudev/gudevenums.h | 49 + src/gudev/gudevenumtypes.c.template | 39 + src/gudev/gudevenumtypes.h.template | 24 + src/gudev/gudevmarshal.list | 1 + src/gudev/gudevprivate.h | 41 + src/gudev/gudevtypes.h | 51 + src/gudev/seed-example-enum.js | 38 + src/gudev/seed-example.js | 72 ++ src/libudev/libudev-device-private.c | 185 ++++ src/libudev/libudev-device.c | 1720 ++++++++++++++++++++++++++++++ src/libudev/libudev-enumerate.c | 936 ++++++++++++++++ src/libudev/libudev-list.c | 340 ++++++ src/libudev/libudev-monitor.c | 782 ++++++++++++++ src/libudev/libudev-private.h | 190 ++++ src/libudev/libudev-queue-private.c | 406 +++++++ src/libudev/libudev-queue.c | 466 ++++++++ src/libudev/libudev-selinux-private.c | 109 ++ src/libudev/libudev-util-private.c | 239 +++++ src/libudev/libudev-util.c | 566 ++++++++++ src/libudev/libudev.c | 449 ++++++++ src/libudev/libudev.h | 188 ++++ src/libudev/libudev.pc.in | 11 + src/udev/docs/.gitignore | 18 - src/udev/docs/Makefile.am | 99 -- src/udev/docs/libudev-docs.xml | 32 - src/udev/docs/libudev-sections.txt | 127 --- src/udev/docs/libudev.types | 0 src/udev/docs/version.xml.in | 1 - src/udev/gudev/.gitignore | 9 - src/udev/gudev/docs/.gitignore | 17 - src/udev/gudev/docs/Makefile.am | 106 -- src/udev/gudev/docs/gudev-docs.xml | 93 -- src/udev/gudev/docs/gudev-sections.txt | 113 -- src/udev/gudev/docs/gudev.types | 4 - src/udev/gudev/docs/version.xml.in | 1 - src/udev/gudev/gjs-example.js | 75 -- src/udev/gudev/gudev-1.0.pc.in | 11 - src/udev/gudev/gudev.h | 33 - src/udev/gudev/gudevclient.c | 527 --------- src/udev/gudev/gudevclient.h | 100 -- src/udev/gudev/gudevdevice.c | 963 ----------------- src/udev/gudev/gudevdevice.h | 128 --- src/udev/gudev/gudevenumerator.c | 431 -------- src/udev/gudev/gudevenumerator.h | 107 -- src/udev/gudev/gudevenums.h | 49 - src/udev/gudev/gudevenumtypes.c.template | 39 - src/udev/gudev/gudevenumtypes.h.template | 24 - src/udev/gudev/gudevmarshal.list | 1 - src/udev/gudev/gudevprivate.h | 41 - src/udev/gudev/gudevtypes.h | 51 - src/udev/gudev/seed-example-enum.js | 38 - src/udev/gudev/seed-example.js | 72 -- src/udev/libudev-device-private.c | 185 ---- src/udev/libudev-device.c | 1720 ------------------------------ src/udev/libudev-enumerate.c | 936 ---------------- src/udev/libudev-list.c | 340 ------ src/udev/libudev-monitor.c | 782 -------------- src/udev/libudev-private.h | 190 ---- src/udev/libudev-queue-private.c | 406 ------- src/udev/libudev-queue.c | 466 -------- src/udev/libudev-selinux-private.c | 109 -- src/udev/libudev-util-private.c | 239 ----- src/udev/libudev-util.c | 566 ---------- src/udev/libudev.c | 449 -------- src/udev/libudev.h | 188 ---- src/udev/libudev.pc.in | 11 - src/udev/scsi_id/scsi_serial.c | 4 +- 77 files changed, 9288 insertions(+), 9899 deletions(-) create mode 100644 src/gudev/.gitignore create mode 100755 src/gudev/gjs-example.js create mode 100644 src/gudev/gudev-1.0.pc.in create mode 100644 src/gudev/gudev.h create mode 100644 src/gudev/gudevclient.c create mode 100644 src/gudev/gudevclient.h create mode 100644 src/gudev/gudevdevice.c create mode 100644 src/gudev/gudevdevice.h create mode 100644 src/gudev/gudevenumerator.c create mode 100644 src/gudev/gudevenumerator.h create mode 100644 src/gudev/gudevenums.h create mode 100644 src/gudev/gudevenumtypes.c.template create mode 100644 src/gudev/gudevenumtypes.h.template create mode 100644 src/gudev/gudevmarshal.list create mode 100644 src/gudev/gudevprivate.h create mode 100644 src/gudev/gudevtypes.h create mode 100755 src/gudev/seed-example-enum.js create mode 100755 src/gudev/seed-example.js create mode 100644 src/libudev/libudev-device-private.c create mode 100644 src/libudev/libudev-device.c create mode 100644 src/libudev/libudev-enumerate.c create mode 100644 src/libudev/libudev-list.c create mode 100644 src/libudev/libudev-monitor.c create mode 100644 src/libudev/libudev-private.h create mode 100644 src/libudev/libudev-queue-private.c create mode 100644 src/libudev/libudev-queue.c create mode 100644 src/libudev/libudev-selinux-private.c create mode 100644 src/libudev/libudev-util-private.c create mode 100644 src/libudev/libudev-util.c create mode 100644 src/libudev/libudev.c create mode 100644 src/libudev/libudev.h create mode 100644 src/libudev/libudev.pc.in delete mode 100644 src/udev/docs/.gitignore delete mode 100644 src/udev/docs/Makefile.am delete mode 100644 src/udev/docs/libudev-docs.xml delete mode 100644 src/udev/docs/libudev-sections.txt delete mode 100644 src/udev/docs/libudev.types delete mode 100644 src/udev/docs/version.xml.in delete mode 100644 src/udev/gudev/.gitignore delete mode 100644 src/udev/gudev/docs/.gitignore delete mode 100644 src/udev/gudev/docs/Makefile.am delete mode 100644 src/udev/gudev/docs/gudev-docs.xml delete mode 100644 src/udev/gudev/docs/gudev-sections.txt delete mode 100644 src/udev/gudev/docs/gudev.types delete mode 100644 src/udev/gudev/docs/version.xml.in delete mode 100755 src/udev/gudev/gjs-example.js delete mode 100644 src/udev/gudev/gudev-1.0.pc.in delete mode 100644 src/udev/gudev/gudev.h delete mode 100644 src/udev/gudev/gudevclient.c delete mode 100644 src/udev/gudev/gudevclient.h delete mode 100644 src/udev/gudev/gudevdevice.c delete mode 100644 src/udev/gudev/gudevdevice.h delete mode 100644 src/udev/gudev/gudevenumerator.c delete mode 100644 src/udev/gudev/gudevenumerator.h delete mode 100644 src/udev/gudev/gudevenums.h delete mode 100644 src/udev/gudev/gudevenumtypes.c.template delete mode 100644 src/udev/gudev/gudevenumtypes.h.template delete mode 100644 src/udev/gudev/gudevmarshal.list delete mode 100644 src/udev/gudev/gudevprivate.h delete mode 100644 src/udev/gudev/gudevtypes.h delete mode 100755 src/udev/gudev/seed-example-enum.js delete mode 100755 src/udev/gudev/seed-example.js delete mode 100644 src/udev/libudev-device-private.c delete mode 100644 src/udev/libudev-device.c delete mode 100644 src/udev/libudev-enumerate.c delete mode 100644 src/udev/libudev-list.c delete mode 100644 src/udev/libudev-monitor.c delete mode 100644 src/udev/libudev-private.h delete mode 100644 src/udev/libudev-queue-private.c delete mode 100644 src/udev/libudev-queue.c delete mode 100644 src/udev/libudev-selinux-private.c delete mode 100644 src/udev/libudev-util-private.c delete mode 100644 src/udev/libudev-util.c delete mode 100644 src/udev/libudev.c delete mode 100644 src/udev/libudev.h delete mode 100644 src/udev/libudev.pc.in (limited to 'src') diff --git a/src/gudev/.gitignore b/src/gudev/.gitignore new file mode 100644 index 0000000000..d20fa523e4 --- /dev/null +++ b/src/gudev/.gitignore @@ -0,0 +1,9 @@ +gtk-doc.make +docs/version.xml +gudev-1.0.pc +gudevenumtypes.c +gudevenumtypes.h +gudevmarshal.c +gudevmarshal.h +GUdev-1.0.gir +GUdev-1.0.typelib diff --git a/src/gudev/gjs-example.js b/src/gudev/gjs-example.js new file mode 100755 index 0000000000..5586fd6a61 --- /dev/null +++ b/src/gudev/gjs-example.js @@ -0,0 +1,75 @@ +#!/usr/bin/env gjs-console + +// This currently depends on the following patches to gjs +// +// http://bugzilla.gnome.org/show_bug.cgi?id=584558 +// http://bugzilla.gnome.org/show_bug.cgi?id=584560 +// http://bugzilla.gnome.org/show_bug.cgi?id=584568 + +const GUdev = imports.gi.GUdev; +const Mainloop = imports.mainloop; + +function print_device (device) { + print (" subsystem: " + device.get_subsystem ()); + print (" devtype: " + device.get_devtype ()); + print (" name: " + device.get_name ()); + print (" number: " + device.get_number ()); + print (" sysfs_path: " + device.get_sysfs_path ()); + print (" driver: " + device.get_driver ()); + print (" action: " + device.get_action ()); + print (" seqnum: " + device.get_seqnum ()); + print (" device type: " + device.get_device_type ()); + print (" device number: " + device.get_device_number ()); + print (" device file: " + device.get_device_file ()); + print (" device file symlinks: " + device.get_device_file_symlinks ()); + print (" foo: " + device.get_sysfs_attr_as_strv ("stat")); + var keys = device.get_property_keys (); + for (var n = 0; n < keys.length; n++) { + print (" " + keys[n] + "=" + device.get_property (keys[n])); + } +} + +function on_uevent (client, action, device) { + print ("action " + action + " on device " + device.get_sysfs_path()); + print_device (device); + print (""); +} + +var client = new GUdev.Client ({subsystems: ["block", "usb/usb_interface"]}); +client.connect ("uevent", on_uevent); + +var block_devices = client.query_by_subsystem ("block"); +for (var n = 0; n < block_devices.length; n++) { + print ("block device: " + block_devices[n].get_device_file ()); +} + +var d; + +d = client.query_by_device_number (GUdev.DeviceType.BLOCK, 0x0810); +if (d == null) { + print ("query_by_device_number 0x810 -> null"); +} else { + print ("query_by_device_number 0x810 -> " + d.get_device_file ()); + var dd = d.get_parent_with_subsystem ("usb", null); + print_device (dd); + print ("--------------------------------------------------------------------------"); + while (d != null) { + print_device (d); + print (""); + d = d.get_parent (); + } +} + +d = client.query_by_sysfs_path ("/sys/block/sda/sda1"); +print ("query_by_sysfs_path (\"/sys/block/sda1\") -> " + d.get_device_file ()); + +d = client.query_by_subsystem_and_name ("block", "sda2"); +print ("query_by_subsystem_and_name (\"block\", \"sda2\") -> " + d.get_device_file ()); + +d = client.query_by_device_file ("/dev/sda"); +print ("query_by_device_file (\"/dev/sda\") -> " + d.get_device_file ()); + +d = client.query_by_device_file ("/dev/block/8:0"); +print ("query_by_device_file (\"/dev/block/8:0\") -> " + d.get_device_file ()); + +Mainloop.run('udev-example'); diff --git a/src/gudev/gudev-1.0.pc.in b/src/gudev/gudev-1.0.pc.in new file mode 100644 index 0000000000..058262d767 --- /dev/null +++ b/src/gudev/gudev-1.0.pc.in @@ -0,0 +1,11 @@ +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: gudev-1.0 +Description: GObject bindings for libudev +Version: @VERSION@ +Requires: glib-2.0, gobject-2.0 +Libs: -L${libdir} -lgudev-1.0 +Cflags: -I${includedir}/gudev-1.0 diff --git a/src/gudev/gudev.h b/src/gudev/gudev.h new file mode 100644 index 0000000000..a313460817 --- /dev/null +++ b/src/gudev/gudev.h @@ -0,0 +1,33 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#ifndef __G_UDEV_H__ +#define __G_UDEV_H__ + +#define _GUDEV_INSIDE_GUDEV_H 1 +#include +#include +#include +#include +#include +#include +#undef _GUDEV_INSIDE_GUDEV_H + +#endif /* __G_UDEV_H__ */ diff --git a/src/gudev/gudevclient.c b/src/gudev/gudevclient.c new file mode 100644 index 0000000000..2b94102ac5 --- /dev/null +++ b/src/gudev/gudevclient.c @@ -0,0 +1,527 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008-2010 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include + +#include "gudevclient.h" +#include "gudevdevice.h" +#include "gudevmarshal.h" +#include "gudevprivate.h" + +/** + * SECTION:gudevclient + * @short_description: Query devices and listen to uevents + * + * #GUdevClient is used to query information about devices on a Linux + * system from the Linux kernel and the udev device + * manager. + * + * Device information is retrieved from the kernel (through the + * sysfs filesystem) and the udev daemon (through a + * tmpfs filesystem) and presented through + * #GUdevDevice objects. This means that no blocking IO ever happens + * (in both cases, we are essentially just reading data from kernel + * memory) and as such there are no asynchronous versions of the + * provided methods. + * + * To get #GUdevDevice objects, use + * g_udev_client_query_by_subsystem(), + * g_udev_client_query_by_device_number(), + * g_udev_client_query_by_device_file(), + * g_udev_client_query_by_sysfs_path(), + * g_udev_client_query_by_subsystem_and_name() + * or the #GUdevEnumerator type. + * + * To listen to uevents, connect to the #GUdevClient::uevent signal. + */ + +struct _GUdevClientPrivate +{ + GSource *watch_source; + struct udev *udev; + struct udev_monitor *monitor; + + gchar **subsystems; +}; + +enum +{ + PROP_0, + PROP_SUBSYSTEMS, +}; + +enum +{ + UEVENT_SIGNAL, + LAST_SIGNAL, +}; + +static guint signals[LAST_SIGNAL] = { 0 }; + +G_DEFINE_TYPE (GUdevClient, g_udev_client, G_TYPE_OBJECT) + +/* ---------------------------------------------------------------------------------------------------- */ + +static gboolean +monitor_event (GIOChannel *source, + GIOCondition condition, + gpointer data) +{ + GUdevClient *client = (GUdevClient *) data; + GUdevDevice *device; + struct udev_device *udevice; + + if (client->priv->monitor == NULL) + goto out; + udevice = udev_monitor_receive_device (client->priv->monitor); + if (udevice == NULL) + goto out; + + device = _g_udev_device_new (udevice); + udev_device_unref (udevice); + g_signal_emit (client, + signals[UEVENT_SIGNAL], + 0, + g_udev_device_get_action (device), + device); + g_object_unref (device); + + out: + return TRUE; +} + +static void +g_udev_client_finalize (GObject *object) +{ + GUdevClient *client = G_UDEV_CLIENT (object); + + if (client->priv->watch_source != NULL) + { + g_source_destroy (client->priv->watch_source); + client->priv->watch_source = NULL; + } + + if (client->priv->monitor != NULL) + { + udev_monitor_unref (client->priv->monitor); + client->priv->monitor = NULL; + } + + if (client->priv->udev != NULL) + { + udev_unref (client->priv->udev); + client->priv->udev = NULL; + } + + g_strfreev (client->priv->subsystems); + + if (G_OBJECT_CLASS (g_udev_client_parent_class)->finalize != NULL) + G_OBJECT_CLASS (g_udev_client_parent_class)->finalize (object); +} + +static void +g_udev_client_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + GUdevClient *client = G_UDEV_CLIENT (object); + + switch (prop_id) + { + case PROP_SUBSYSTEMS: + if (client->priv->subsystems != NULL) + g_strfreev (client->priv->subsystems); + client->priv->subsystems = g_strdupv (g_value_get_boxed (value)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +g_udev_client_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + GUdevClient *client = G_UDEV_CLIENT (object); + + switch (prop_id) + { + case PROP_SUBSYSTEMS: + g_value_set_boxed (value, client->priv->subsystems); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +g_udev_client_constructed (GObject *object) +{ + GUdevClient *client = G_UDEV_CLIENT (object); + GIOChannel *channel; + guint n; + + client->priv->udev = udev_new (); + + /* connect to event source */ + client->priv->monitor = udev_monitor_new_from_netlink (client->priv->udev, "udev"); + + //g_debug ("ss = %p", client->priv->subsystems); + + if (client->priv->subsystems != NULL) + { + /* install subsystem filters to only wake up for certain events */ + for (n = 0; client->priv->subsystems[n] != NULL; n++) + { + gchar *subsystem; + gchar *devtype; + gchar *s; + + subsystem = g_strdup (client->priv->subsystems[n]); + devtype = NULL; + + //g_debug ("s = '%s'", subsystem); + + s = strstr (subsystem, "/"); + if (s != NULL) + { + devtype = s + 1; + *s = '\0'; + } + + if (client->priv->monitor != NULL) + udev_monitor_filter_add_match_subsystem_devtype (client->priv->monitor, subsystem, devtype); + + g_free (subsystem); + } + + /* listen to events, and buffer them */ + if (client->priv->monitor != NULL) + { + udev_monitor_enable_receiving (client->priv->monitor); + channel = g_io_channel_unix_new (udev_monitor_get_fd (client->priv->monitor)); + client->priv->watch_source = g_io_create_watch (channel, G_IO_IN); + g_io_channel_unref (channel); + g_source_set_callback (client->priv->watch_source, (GSourceFunc) monitor_event, client, NULL); + g_source_attach (client->priv->watch_source, g_main_context_get_thread_default ()); + g_source_unref (client->priv->watch_source); + } + else + { + client->priv->watch_source = NULL; + } + } + + if (G_OBJECT_CLASS (g_udev_client_parent_class)->constructed != NULL) + G_OBJECT_CLASS (g_udev_client_parent_class)->constructed (object); +} + + +static void +g_udev_client_class_init (GUdevClientClass *klass) +{ + GObjectClass *gobject_class = (GObjectClass *) klass; + + gobject_class->constructed = g_udev_client_constructed; + gobject_class->set_property = g_udev_client_set_property; + gobject_class->get_property = g_udev_client_get_property; + gobject_class->finalize = g_udev_client_finalize; + + /** + * GUdevClient:subsystems: + * + * The subsystems to listen for uevents on. + * + * To listen for only a specific DEVTYPE for a given SUBSYSTEM, use + * "subsystem/devtype". For example, to only listen for uevents + * where SUBSYSTEM is usb and DEVTYPE is usb_interface, use + * "usb/usb_interface". + * + * If this property is %NULL, then no events will be reported. If + * it's the empty array, events from all subsystems will be + * reported. + */ + g_object_class_install_property (gobject_class, + PROP_SUBSYSTEMS, + g_param_spec_boxed ("subsystems", + "The subsystems to listen for changes on", + "The subsystems to listen for changes on", + G_TYPE_STRV, + G_PARAM_CONSTRUCT_ONLY | + G_PARAM_READWRITE)); + + /** + * GUdevClient::uevent: + * @client: The #GUdevClient receiving the event. + * @action: The action for the uevent e.g. "add", "remove", "change", "move", etc. + * @device: Details about the #GUdevDevice the event is for. + * + * Emitted when @client receives an uevent. + * + * This signal is emitted in the + * thread-default main loop + * of the thread that @client was created in. + */ + signals[UEVENT_SIGNAL] = g_signal_new ("uevent", + G_TYPE_FROM_CLASS (klass), + G_SIGNAL_RUN_LAST, + G_STRUCT_OFFSET (GUdevClientClass, uevent), + NULL, + NULL, + g_udev_marshal_VOID__STRING_OBJECT, + G_TYPE_NONE, + 2, + G_TYPE_STRING, + G_UDEV_TYPE_DEVICE); + + g_type_class_add_private (klass, sizeof (GUdevClientPrivate)); +} + +static void +g_udev_client_init (GUdevClient *client) +{ + client->priv = G_TYPE_INSTANCE_GET_PRIVATE (client, + G_UDEV_TYPE_CLIENT, + GUdevClientPrivate); +} + +/** + * g_udev_client_new: + * @subsystems: (array zero-terminated=1) (element-type utf8) (transfer none) (allow-none): A %NULL terminated string array of subsystems to listen for uevents on, %NULL to not listen on uevents at all, or an empty array to listen to uevents on all subsystems. See the documentation for the #GUdevClient:subsystems property for details on this parameter. + * + * Constructs a #GUdevClient object that can be used to query + * information about devices. Connect to the #GUdevClient::uevent + * signal to listen for uevents. Note that signals are emitted in the + * thread-default main loop + * of the thread that you call this constructor from. + * + * Returns: A new #GUdevClient object. Free with g_object_unref(). + */ +GUdevClient * +g_udev_client_new (const gchar * const *subsystems) +{ + return G_UDEV_CLIENT (g_object_new (G_UDEV_TYPE_CLIENT, "subsystems", subsystems, NULL)); +} + +/** + * g_udev_client_query_by_subsystem: + * @client: A #GUdevClient. + * @subsystem: (allow-none): The subsystem to get devices for or %NULL to get all devices. + * + * Gets all devices belonging to @subsystem. + * + * Returns: (element-type GUdevDevice) (transfer full): A list of #GUdevDevice objects. The caller should free the result by using g_object_unref() on each element in the list and then g_list_free() on the list. + */ +GList * +g_udev_client_query_by_subsystem (GUdevClient *client, + const gchar *subsystem) +{ + struct udev_enumerate *enumerate; + struct udev_list_entry *l, *devices; + GList *ret; + + g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); + + ret = NULL; + + /* prepare a device scan */ + enumerate = udev_enumerate_new (client->priv->udev); + + /* filter for subsystem */ + if (subsystem != NULL) + udev_enumerate_add_match_subsystem (enumerate, subsystem); + /* retrieve the list */ + udev_enumerate_scan_devices (enumerate); + + /* add devices to the list */ + devices = udev_enumerate_get_list_entry (enumerate); + for (l = devices; l != NULL; l = udev_list_entry_get_next (l)) + { + struct udev_device *udevice; + GUdevDevice *device; + + udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerate), + udev_list_entry_get_name (l)); + if (udevice == NULL) + continue; + device = _g_udev_device_new (udevice); + udev_device_unref (udevice); + ret = g_list_prepend (ret, device); + } + udev_enumerate_unref (enumerate); + + ret = g_list_reverse (ret); + + return ret; +} + +/** + * g_udev_client_query_by_device_number: + * @client: A #GUdevClient. + * @type: A value from the #GUdevDeviceType enumeration. + * @number: A device number. + * + * Looks up a device for a type and device number. + * + * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). + */ +GUdevDevice * +g_udev_client_query_by_device_number (GUdevClient *client, + GUdevDeviceType type, + GUdevDeviceNumber number) +{ + struct udev_device *udevice; + GUdevDevice *device; + + g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); + + device = NULL; + udevice = udev_device_new_from_devnum (client->priv->udev, type, number); + + if (udevice == NULL) + goto out; + + device = _g_udev_device_new (udevice); + udev_device_unref (udevice); + + out: + return device; +} + +/** + * g_udev_client_query_by_device_file: + * @client: A #GUdevClient. + * @device_file: A device file. + * + * Looks up a device for a device file. + * + * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). + */ +GUdevDevice * +g_udev_client_query_by_device_file (GUdevClient *client, + const gchar *device_file) +{ + struct stat stat_buf; + GUdevDevice *device; + + g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); + g_return_val_if_fail (device_file != NULL, NULL); + + device = NULL; + + if (stat (device_file, &stat_buf) != 0) + goto out; + + if (stat_buf.st_rdev == 0) + goto out; + + if (S_ISBLK (stat_buf.st_mode)) + device = g_udev_client_query_by_device_number (client, G_UDEV_DEVICE_TYPE_BLOCK, stat_buf.st_rdev); + else if (S_ISCHR (stat_buf.st_mode)) + device = g_udev_client_query_by_device_number (client, G_UDEV_DEVICE_TYPE_CHAR, stat_buf.st_rdev); + + out: + return device; +} + +/** + * g_udev_client_query_by_sysfs_path: + * @client: A #GUdevClient. + * @sysfs_path: A sysfs path. + * + * Looks up a device for a sysfs path. + * + * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). + */ +GUdevDevice * +g_udev_client_query_by_sysfs_path (GUdevClient *client, + const gchar *sysfs_path) +{ + struct udev_device *udevice; + GUdevDevice *device; + + g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); + g_return_val_if_fail (sysfs_path != NULL, NULL); + + device = NULL; + udevice = udev_device_new_from_syspath (client->priv->udev, sysfs_path); + if (udevice == NULL) + goto out; + + device = _g_udev_device_new (udevice); + udev_device_unref (udevice); + + out: + return device; +} + +/** + * g_udev_client_query_by_subsystem_and_name: + * @client: A #GUdevClient. + * @subsystem: A subsystem name. + * @name: The name of the device. + * + * Looks up a device for a subsystem and name. + * + * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). + */ +GUdevDevice * +g_udev_client_query_by_subsystem_and_name (GUdevClient *client, + const gchar *subsystem, + const gchar *name) +{ + struct udev_device *udevice; + GUdevDevice *device; + + g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); + g_return_val_if_fail (subsystem != NULL, NULL); + g_return_val_if_fail (name != NULL, NULL); + + device = NULL; + udevice = udev_device_new_from_subsystem_sysname (client->priv->udev, subsystem, name); + if (udevice == NULL) + goto out; + + device = _g_udev_device_new (udevice); + udev_device_unref (udevice); + + out: + return device; +} + +struct udev * +_g_udev_client_get_udev (GUdevClient *client) +{ + g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); + return client->priv->udev; +} diff --git a/src/gudev/gudevclient.h b/src/gudev/gudevclient.h new file mode 100644 index 0000000000..b425d03d48 --- /dev/null +++ b/src/gudev/gudevclient.h @@ -0,0 +1,100 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) +#error "Only can be included directly, this file may disappear or change contents." +#endif + +#ifndef __G_UDEV_CLIENT_H__ +#define __G_UDEV_CLIENT_H__ + +#include + +G_BEGIN_DECLS + +#define G_UDEV_TYPE_CLIENT (g_udev_client_get_type ()) +#define G_UDEV_CLIENT(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_UDEV_TYPE_CLIENT, GUdevClient)) +#define G_UDEV_CLIENT_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_UDEV_TYPE_CLIENT, GUdevClientClass)) +#define G_UDEV_IS_CLIENT(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_UDEV_TYPE_CLIENT)) +#define G_UDEV_IS_CLIENT_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_UDEV_TYPE_CLIENT)) +#define G_UDEV_CLIENT_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_UDEV_TYPE_CLIENT, GUdevClientClass)) + +typedef struct _GUdevClientClass GUdevClientClass; +typedef struct _GUdevClientPrivate GUdevClientPrivate; + +/** + * GUdevClient: + * + * The #GUdevClient struct is opaque and should not be accessed directly. + */ +struct _GUdevClient +{ + GObject parent; + + /*< private >*/ + GUdevClientPrivate *priv; +}; + +/** + * GUdevClientClass: + * @parent_class: Parent class. + * @uevent: Signal class handler for the #GUdevClient::uevent signal. + * + * Class structure for #GUdevClient. + */ +struct _GUdevClientClass +{ + GObjectClass parent_class; + + /* signals */ + void (*uevent) (GUdevClient *client, + const gchar *action, + GUdevDevice *device); + + /*< private >*/ + /* Padding for future expansion */ + void (*reserved1) (void); + void (*reserved2) (void); + void (*reserved3) (void); + void (*reserved4) (void); + void (*reserved5) (void); + void (*reserved6) (void); + void (*reserved7) (void); + void (*reserved8) (void); +}; + +GType g_udev_client_get_type (void) G_GNUC_CONST; +GUdevClient *g_udev_client_new (const gchar* const *subsystems); +GList *g_udev_client_query_by_subsystem (GUdevClient *client, + const gchar *subsystem); +GUdevDevice *g_udev_client_query_by_device_number (GUdevClient *client, + GUdevDeviceType type, + GUdevDeviceNumber number); +GUdevDevice *g_udev_client_query_by_device_file (GUdevClient *client, + const gchar *device_file); +GUdevDevice *g_udev_client_query_by_sysfs_path (GUdevClient *client, + const gchar *sysfs_path); +GUdevDevice *g_udev_client_query_by_subsystem_and_name (GUdevClient *client, + const gchar *subsystem, + const gchar *name); + +G_END_DECLS + +#endif /* __G_UDEV_CLIENT_H__ */ diff --git a/src/gudev/gudevdevice.c b/src/gudev/gudevdevice.c new file mode 100644 index 0000000000..62a26f99b7 --- /dev/null +++ b/src/gudev/gudevdevice.c @@ -0,0 +1,963 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include + +#include "gudevdevice.h" +#include "gudevprivate.h" + +/** + * SECTION:gudevdevice + * @short_description: Get information about a device + * + * The #GUdevDevice class is used to get information about a specific + * device. Note that you cannot instantiate a #GUdevDevice object + * yourself. Instead you must use #GUdevClient to obtain #GUdevDevice + * objects. + * + * To get basic information about a device, use + * g_udev_device_get_subsystem(), g_udev_device_get_devtype(), + * g_udev_device_get_name(), g_udev_device_get_number(), + * g_udev_device_get_sysfs_path(), g_udev_device_get_driver(), + * g_udev_device_get_action(), g_udev_device_get_seqnum(), + * g_udev_device_get_device_type(), g_udev_device_get_device_number(), + * g_udev_device_get_device_file(), + * g_udev_device_get_device_file_symlinks(). + * + * To navigate the device tree, use g_udev_device_get_parent() and + * g_udev_device_get_parent_with_subsystem(). + * + * To access udev properties for the device, use + * g_udev_device_get_property_keys(), + * g_udev_device_has_property(), + * g_udev_device_get_property(), + * g_udev_device_get_property_as_int(), + * g_udev_device_get_property_as_uint64(), + * g_udev_device_get_property_as_double(), + * g_udev_device_get_property_as_boolean() and + * g_udev_device_get_property_as_strv(). + * + * To access sysfs attributes for the device, use + * g_udev_device_get_sysfs_attr(), + * g_udev_device_get_sysfs_attr_as_int(), + * g_udev_device_get_sysfs_attr_as_uint64(), + * g_udev_device_get_sysfs_attr_as_double(), + * g_udev_device_get_sysfs_attr_as_boolean() and + * g_udev_device_get_sysfs_attr_as_strv(). + * + * Note that all getters on #GUdevDevice are non-reffing – returned + * values are owned by the object, should not be freed and are only + * valid as long as the object is alive. + * + * By design, #GUdevDevice will not react to changes for a device – it + * only contains a snapshot of information when the #GUdevDevice + * object was created. To work with changes, you typically connect to + * the #GUdevClient::uevent signal on a #GUdevClient and get a new + * #GUdevDevice whenever an event happens. + */ + +struct _GUdevDevicePrivate +{ + struct udev_device *udevice; + + /* computed ondemand and cached */ + gchar **device_file_symlinks; + gchar **property_keys; + gchar **tags; + GHashTable *prop_strvs; + GHashTable *sysfs_attr_strvs; +}; + +G_DEFINE_TYPE (GUdevDevice, g_udev_device, G_TYPE_OBJECT) + +static void +g_udev_device_finalize (GObject *object) +{ + GUdevDevice *device = G_UDEV_DEVICE (object); + + g_strfreev (device->priv->device_file_symlinks); + g_strfreev (device->priv->property_keys); + g_strfreev (device->priv->tags); + + if (device->priv->udevice != NULL) + udev_device_unref (device->priv->udevice); + + if (device->priv->prop_strvs != NULL) + g_hash_table_unref (device->priv->prop_strvs); + + if (device->priv->sysfs_attr_strvs != NULL) + g_hash_table_unref (device->priv->sysfs_attr_strvs); + + if (G_OBJECT_CLASS (g_udev_device_parent_class)->finalize != NULL) + (* G_OBJECT_CLASS (g_udev_device_parent_class)->finalize) (object); +} + +static void +g_udev_device_class_init (GUdevDeviceClass *klass) +{ + GObjectClass *gobject_class = (GObjectClass *) klass; + + gobject_class->finalize = g_udev_device_finalize; + + g_type_class_add_private (klass, sizeof (GUdevDevicePrivate)); +} + +static void +g_udev_device_init (GUdevDevice *device) +{ + device->priv = G_TYPE_INSTANCE_GET_PRIVATE (device, + G_UDEV_TYPE_DEVICE, + GUdevDevicePrivate); +} + + +GUdevDevice * +_g_udev_device_new (struct udev_device *udevice) +{ + GUdevDevice *device; + + device = G_UDEV_DEVICE (g_object_new (G_UDEV_TYPE_DEVICE, NULL)); + device->priv->udevice = udev_device_ref (udevice); + + return device; +} + +/** + * g_udev_device_get_subsystem: + * @device: A #GUdevDevice. + * + * Gets the subsystem for @device. + * + * Returns: The subsystem for @device. + */ +const gchar * +g_udev_device_get_subsystem (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_subsystem (device->priv->udevice); +} + +/** + * g_udev_device_get_devtype: + * @device: A #GUdevDevice. + * + * Gets the device type for @device. + * + * Returns: The devtype for @device. + */ +const gchar * +g_udev_device_get_devtype (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_devtype (device->priv->udevice); +} + +/** + * g_udev_device_get_name: + * @device: A #GUdevDevice. + * + * Gets the name of @device, e.g. "sda3". + * + * Returns: The name of @device. + */ +const gchar * +g_udev_device_get_name (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_sysname (device->priv->udevice); +} + +/** + * g_udev_device_get_number: + * @device: A #GUdevDevice. + * + * Gets the number of @device, e.g. "3" if g_udev_device_get_name() returns "sda3". + * + * Returns: The number of @device. + */ +const gchar * +g_udev_device_get_number (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_sysnum (device->priv->udevice); +} + +/** + * g_udev_device_get_sysfs_path: + * @device: A #GUdevDevice. + * + * Gets the sysfs path for @device. + * + * Returns: The sysfs path for @device. + */ +const gchar * +g_udev_device_get_sysfs_path (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_syspath (device->priv->udevice); +} + +/** + * g_udev_device_get_driver: + * @device: A #GUdevDevice. + * + * Gets the name of the driver used for @device. + * + * Returns: The name of the driver for @device or %NULL if unknown. + */ +const gchar * +g_udev_device_get_driver (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_driver (device->priv->udevice); +} + +/** + * g_udev_device_get_action: + * @device: A #GUdevDevice. + * + * Gets the most recent action (e.g. "add", "remove", "change", etc.) for @device. + * + * Returns: An action string. + */ +const gchar * +g_udev_device_get_action (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_action (device->priv->udevice); +} + +/** + * g_udev_device_get_seqnum: + * @device: A #GUdevDevice. + * + * Gets the most recent sequence number for @device. + * + * Returns: A sequence number. + */ +guint64 +g_udev_device_get_seqnum (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); + return udev_device_get_seqnum (device->priv->udevice); +} + +/** + * g_udev_device_get_device_type: + * @device: A #GUdevDevice. + * + * Gets the type of the device file, if any, for @device. + * + * Returns: The device number for @device or #G_UDEV_DEVICE_TYPE_NONE if the device does not have a device file. + */ +GUdevDeviceType +g_udev_device_get_device_type (GUdevDevice *device) +{ + struct stat stat_buf; + const gchar *device_file; + GUdevDeviceType type; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), G_UDEV_DEVICE_TYPE_NONE); + + type = G_UDEV_DEVICE_TYPE_NONE; + + /* TODO: would be better to have support for this in libudev... */ + + device_file = g_udev_device_get_device_file (device); + if (device_file == NULL) + goto out; + + if (stat (device_file, &stat_buf) != 0) + goto out; + + if (S_ISBLK (stat_buf.st_mode)) + type = G_UDEV_DEVICE_TYPE_BLOCK; + else if (S_ISCHR (stat_buf.st_mode)) + type = G_UDEV_DEVICE_TYPE_CHAR; + + out: + return type; +} + +/** + * g_udev_device_get_device_number: + * @device: A #GUdevDevice. + * + * Gets the device number, if any, for @device. + * + * Returns: The device number for @device or 0 if unknown. + */ +GUdevDeviceNumber +g_udev_device_get_device_number (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); + return udev_device_get_devnum (device->priv->udevice); +} + +/** + * g_udev_device_get_device_file: + * @device: A #GUdevDevice. + * + * Gets the device file for @device. + * + * Returns: The device file for @device or %NULL if no device file + * exists. + */ +const gchar * +g_udev_device_get_device_file (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + return udev_device_get_devnode (device->priv->udevice); +} + +/** + * g_udev_device_get_device_file_symlinks: + * @device: A #GUdevDevice. + * + * Gets a list of symlinks (in /dev) that points to + * the device file for @device. + * + * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): A %NULL terminated string array of symlinks. This array is owned by @device and should not be freed by the caller. + */ +const gchar * const * +g_udev_device_get_device_file_symlinks (GUdevDevice *device) +{ + struct udev_list_entry *l; + GPtrArray *p; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + + if (device->priv->device_file_symlinks != NULL) + goto out; + + p = g_ptr_array_new (); + for (l = udev_device_get_devlinks_list_entry (device->priv->udevice); l != NULL; l = udev_list_entry_get_next (l)) + { + g_ptr_array_add (p, g_strdup (udev_list_entry_get_name (l))); + } + g_ptr_array_add (p, NULL); + device->priv->device_file_symlinks = (gchar **) g_ptr_array_free (p, FALSE); + + out: + return (const gchar * const *) device->priv->device_file_symlinks; +} + +/* ---------------------------------------------------------------------------------------------------- */ + +/** + * g_udev_device_get_parent: + * @device: A #GUdevDevice. + * + * Gets the immediate parent of @device, if any. + * + * Returns: (transfer full): A #GUdevDevice or %NULL if @device has no parent. Free with g_object_unref(). + */ +GUdevDevice * +g_udev_device_get_parent (GUdevDevice *device) +{ + GUdevDevice *ret; + struct udev_device *udevice; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + + ret = NULL; + + udevice = udev_device_get_parent (device->priv->udevice); + if (udevice == NULL) + goto out; + + ret = _g_udev_device_new (udevice); + + out: + return ret; +} + +/** + * g_udev_device_get_parent_with_subsystem: + * @device: A #GUdevDevice. + * @subsystem: The subsystem of the parent to get. + * @devtype: (allow-none): The devtype of the parent to get or %NULL. + * + * Walks up the chain of parents of @device and returns the first + * device encountered where @subsystem and @devtype matches, if any. + * + * Returns: (transfer full): A #GUdevDevice or %NULL if @device has no parent with @subsystem and @devtype. Free with g_object_unref(). + */ +GUdevDevice * +g_udev_device_get_parent_with_subsystem (GUdevDevice *device, + const gchar *subsystem, + const gchar *devtype) +{ + GUdevDevice *ret; + struct udev_device *udevice; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + g_return_val_if_fail (subsystem != NULL, NULL); + + ret = NULL; + + udevice = udev_device_get_parent_with_subsystem_devtype (device->priv->udevice, + subsystem, + devtype); + if (udevice == NULL) + goto out; + + ret = _g_udev_device_new (udevice); + + out: + return ret; +} + +/* ---------------------------------------------------------------------------------------------------- */ + +/** + * g_udev_device_get_property_keys: + * @device: A #GUdevDevice. + * + * Gets all keys for properties on @device. + * + * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): A %NULL terminated string array of property keys. This array is owned by @device and should not be freed by the caller. + */ +const gchar* const * +g_udev_device_get_property_keys (GUdevDevice *device) +{ + struct udev_list_entry *l; + GPtrArray *p; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + + if (device->priv->property_keys != NULL) + goto out; + + p = g_ptr_array_new (); + for (l = udev_device_get_properties_list_entry (device->priv->udevice); l != NULL; l = udev_list_entry_get_next (l)) + { + g_ptr_array_add (p, g_strdup (udev_list_entry_get_name (l))); + } + g_ptr_array_add (p, NULL); + device->priv->property_keys = (gchar **) g_ptr_array_free (p, FALSE); + + out: + return (const gchar * const *) device->priv->property_keys; +} + + +/** + * g_udev_device_has_property: + * @device: A #GUdevDevice. + * @key: Name of property. + * + * Check if a the property with the given key exists. + * + * Returns: %TRUE only if the value for @key exist. + */ +gboolean +g_udev_device_has_property (GUdevDevice *device, + const gchar *key) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); + g_return_val_if_fail (key != NULL, FALSE); + return udev_device_get_property_value (device->priv->udevice, key) != NULL; +} + +/** + * g_udev_device_get_property: + * @device: A #GUdevDevice. + * @key: Name of property. + * + * Look up the value for @key on @device. + * + * Returns: The value for @key or %NULL if @key doesn't exist on @device. Do not free this string, it is owned by @device. + */ +const gchar * +g_udev_device_get_property (GUdevDevice *device, + const gchar *key) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + g_return_val_if_fail (key != NULL, NULL); + return udev_device_get_property_value (device->priv->udevice, key); +} + +/** + * g_udev_device_get_property_as_int: + * @device: A #GUdevDevice. + * @key: Name of property. + * + * Look up the value for @key on @device and convert it to an integer + * using strtol(). + * + * Returns: The value for @key or 0 if @key doesn't exist or + * isn't an integer. + */ +gint +g_udev_device_get_property_as_int (GUdevDevice *device, + const gchar *key) +{ + gint result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); + g_return_val_if_fail (key != NULL, 0); + + result = 0; + s = g_udev_device_get_property (device, key); + if (s == NULL) + goto out; + + result = strtol (s, NULL, 0); +out: + return result; +} + +/** + * g_udev_device_get_property_as_uint64: + * @device: A #GUdevDevice. + * @key: Name of property. + * + * Look up the value for @key on @device and convert it to an unsigned + * 64-bit integer using g_ascii_strtoull(). + * + * Returns: The value for @key or 0 if @key doesn't exist or isn't a + * #guint64. + */ +guint64 +g_udev_device_get_property_as_uint64 (GUdevDevice *device, + const gchar *key) +{ + guint64 result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); + g_return_val_if_fail (key != NULL, 0); + + result = 0; + s = g_udev_device_get_property (device, key); + if (s == NULL) + goto out; + + result = g_ascii_strtoull (s, NULL, 0); +out: + return result; +} + +/** + * g_udev_device_get_property_as_double: + * @device: A #GUdevDevice. + * @key: Name of property. + * + * Look up the value for @key on @device and convert it to a double + * precision floating point number using strtod(). + * + * Returns: The value for @key or 0.0 if @key doesn't exist or isn't a + * #gdouble. + */ +gdouble +g_udev_device_get_property_as_double (GUdevDevice *device, + const gchar *key) +{ + gdouble result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0.0); + g_return_val_if_fail (key != NULL, 0.0); + + result = 0.0; + s = g_udev_device_get_property (device, key); + if (s == NULL) + goto out; + + result = strtod (s, NULL); +out: + return result; +} + +/** + * g_udev_device_get_property_as_boolean: + * @device: A #GUdevDevice. + * @key: Name of property. + * + * Look up the value for @key on @device and convert it to an + * boolean. This is done by doing a case-insensitive string comparison + * on the string value against "1" and "true". + * + * Returns: The value for @key or %FALSE if @key doesn't exist or + * isn't a #gboolean. + */ +gboolean +g_udev_device_get_property_as_boolean (GUdevDevice *device, + const gchar *key) +{ + gboolean result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); + g_return_val_if_fail (key != NULL, FALSE); + + result = FALSE; + s = g_udev_device_get_property (device, key); + if (s == NULL) + goto out; + + if (strcmp (s, "1") == 0 || g_ascii_strcasecmp (s, "true") == 0) + result = TRUE; + out: + return result; +} + +static gchar ** +split_at_whitespace (const gchar *s) +{ + gchar **result; + guint n; + guint m; + + result = g_strsplit_set (s, " \v\t\r\n", 0); + + /* remove empty strings, thanks GLib */ + for (n = 0; result[n] != NULL; n++) + { + if (strlen (result[n]) == 0) + { + g_free (result[n]); + for (m = n; result[m] != NULL; m++) + result[m] = result[m + 1]; + n--; + } + } + + return result; +} + +/** + * g_udev_device_get_property_as_strv: + * @device: A #GUdevDevice. + * @key: Name of property. + * + * Look up the value for @key on @device and return the result of + * splitting it into non-empty tokens split at white space (only space + * (' '), form-feed ('\f'), newline ('\n'), carriage return ('\r'), + * horizontal tab ('\t'), and vertical tab ('\v') are considered; the + * locale is not taken into account). + * + * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): The value of @key on @device split into tokens or %NULL if @key doesn't exist. This array is owned by @device and should not be freed by the caller. + */ +const gchar* const * +g_udev_device_get_property_as_strv (GUdevDevice *device, + const gchar *key) +{ + gchar **result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + g_return_val_if_fail (key != NULL, NULL); + + if (device->priv->prop_strvs != NULL) + { + result = g_hash_table_lookup (device->priv->prop_strvs, key); + if (result != NULL) + goto out; + } + + result = NULL; + s = g_udev_device_get_property (device, key); + if (s == NULL) + goto out; + + result = split_at_whitespace (s); + if (result == NULL) + goto out; + + if (device->priv->prop_strvs == NULL) + device->priv->prop_strvs = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_strfreev); + g_hash_table_insert (device->priv->prop_strvs, g_strdup (key), result); + +out: + return (const gchar* const *) result; +} + +/* ---------------------------------------------------------------------------------------------------- */ + +/** + * g_udev_device_get_sysfs_attr: + * @device: A #GUdevDevice. + * @name: Name of the sysfs attribute. + * + * Look up the sysfs attribute with @name on @device. + * + * Returns: The value of the sysfs attribute or %NULL if there is no + * such attribute. Do not free this string, it is owned by @device. + */ +const gchar * +g_udev_device_get_sysfs_attr (GUdevDevice *device, + const gchar *name) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + g_return_val_if_fail (name != NULL, NULL); + return udev_device_get_sysattr_value (device->priv->udevice, name); +} + +/** + * g_udev_device_get_sysfs_attr_as_int: + * @device: A #GUdevDevice. + * @name: Name of the sysfs attribute. + * + * Look up the sysfs attribute with @name on @device and convert it to an integer + * using strtol(). + * + * Returns: The value of the sysfs attribute or 0 if there is no such + * attribute. + */ +gint +g_udev_device_get_sysfs_attr_as_int (GUdevDevice *device, + const gchar *name) +{ + gint result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); + g_return_val_if_fail (name != NULL, 0); + + result = 0; + s = g_udev_device_get_sysfs_attr (device, name); + if (s == NULL) + goto out; + + result = strtol (s, NULL, 0); +out: + return result; +} + +/** + * g_udev_device_get_sysfs_attr_as_uint64: + * @device: A #GUdevDevice. + * @name: Name of the sysfs attribute. + * + * Look up the sysfs attribute with @name on @device and convert it to an unsigned + * 64-bit integer using g_ascii_strtoull(). + * + * Returns: The value of the sysfs attribute or 0 if there is no such + * attribute. + */ +guint64 +g_udev_device_get_sysfs_attr_as_uint64 (GUdevDevice *device, + const gchar *name) +{ + guint64 result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); + g_return_val_if_fail (name != NULL, 0); + + result = 0; + s = g_udev_device_get_sysfs_attr (device, name); + if (s == NULL) + goto out; + + result = g_ascii_strtoull (s, NULL, 0); +out: + return result; +} + +/** + * g_udev_device_get_sysfs_attr_as_double: + * @device: A #GUdevDevice. + * @name: Name of the sysfs attribute. + * + * Look up the sysfs attribute with @name on @device and convert it to a double + * precision floating point number using strtod(). + * + * Returns: The value of the sysfs attribute or 0.0 if there is no such + * attribute. + */ +gdouble +g_udev_device_get_sysfs_attr_as_double (GUdevDevice *device, + const gchar *name) +{ + gdouble result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0.0); + g_return_val_if_fail (name != NULL, 0.0); + + result = 0.0; + s = g_udev_device_get_sysfs_attr (device, name); + if (s == NULL) + goto out; + + result = strtod (s, NULL); +out: + return result; +} + +/** + * g_udev_device_get_sysfs_attr_as_boolean: + * @device: A #GUdevDevice. + * @name: Name of the sysfs attribute. + * + * Look up the sysfs attribute with @name on @device and convert it to an + * boolean. This is done by doing a case-insensitive string comparison + * on the string value against "1" and "true". + * + * Returns: The value of the sysfs attribute or %FALSE if there is no such + * attribute. + */ +gboolean +g_udev_device_get_sysfs_attr_as_boolean (GUdevDevice *device, + const gchar *name) +{ + gboolean result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); + g_return_val_if_fail (name != NULL, FALSE); + + result = FALSE; + s = g_udev_device_get_sysfs_attr (device, name); + if (s == NULL) + goto out; + + if (strcmp (s, "1") == 0 || g_ascii_strcasecmp (s, "true") == 0) + result = TRUE; + out: + return result; +} + +/** + * g_udev_device_get_sysfs_attr_as_strv: + * @device: A #GUdevDevice. + * @name: Name of the sysfs attribute. + * + * Look up the sysfs attribute with @name on @device and return the result of + * splitting it into non-empty tokens split at white space (only space (' '), + * form-feed ('\f'), newline ('\n'), carriage return ('\r'), horizontal + * tab ('\t'), and vertical tab ('\v') are considered; the locale is + * not taken into account). + * + * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): The value of the sysfs attribute split into tokens or %NULL if there is no such attribute. This array is owned by @device and should not be freed by the caller. + */ +const gchar * const * +g_udev_device_get_sysfs_attr_as_strv (GUdevDevice *device, + const gchar *name) +{ + gchar **result; + const gchar *s; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + g_return_val_if_fail (name != NULL, NULL); + + if (device->priv->sysfs_attr_strvs != NULL) + { + result = g_hash_table_lookup (device->priv->sysfs_attr_strvs, name); + if (result != NULL) + goto out; + } + + result = NULL; + s = g_udev_device_get_sysfs_attr (device, name); + if (s == NULL) + goto out; + + result = split_at_whitespace (s); + if (result == NULL) + goto out; + + if (device->priv->sysfs_attr_strvs == NULL) + device->priv->sysfs_attr_strvs = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_strfreev); + g_hash_table_insert (device->priv->sysfs_attr_strvs, g_strdup (name), result); + +out: + return (const gchar* const *) result; +} + +/** + * g_udev_device_get_tags: + * @device: A #GUdevDevice. + * + * Gets all tags for @device. + * + * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): A %NULL terminated string array of tags. This array is owned by @device and should not be freed by the caller. + * + * Since: 165 + */ +const gchar* const * +g_udev_device_get_tags (GUdevDevice *device) +{ + struct udev_list_entry *l; + GPtrArray *p; + + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); + + if (device->priv->tags != NULL) + goto out; + + p = g_ptr_array_new (); + for (l = udev_device_get_tags_list_entry (device->priv->udevice); l != NULL; l = udev_list_entry_get_next (l)) + { + g_ptr_array_add (p, g_strdup (udev_list_entry_get_name (l))); + } + g_ptr_array_add (p, NULL); + device->priv->tags = (gchar **) g_ptr_array_free (p, FALSE); + + out: + return (const gchar * const *) device->priv->tags; +} + +/** + * g_udev_device_get_is_initialized: + * @device: A #GUdevDevice. + * + * Gets whether @device has been initalized. + * + * Returns: Whether @device has been initialized. + * + * Since: 165 + */ +gboolean +g_udev_device_get_is_initialized (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); + return udev_device_get_is_initialized (device->priv->udevice); +} + +/** + * g_udev_device_get_usec_since_initialized: + * @device: A #GUdevDevice. + * + * Gets number of micro-seconds since @device was initialized. + * + * This only works for devices with properties in the udev + * database. All other devices return 0. + * + * Returns: Number of micro-seconds since @device was initialized or 0 if unknown. + * + * Since: 165 + */ +guint64 +g_udev_device_get_usec_since_initialized (GUdevDevice *device) +{ + g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); + return udev_device_get_usec_since_initialized (device->priv->udevice); +} diff --git a/src/gudev/gudevdevice.h b/src/gudev/gudevdevice.h new file mode 100644 index 0000000000..d4873bad0f --- /dev/null +++ b/src/gudev/gudevdevice.h @@ -0,0 +1,128 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) +#error "Only can be included directly, this file may disappear or change contents." +#endif + +#ifndef __G_UDEV_DEVICE_H__ +#define __G_UDEV_DEVICE_H__ + +#include + +G_BEGIN_DECLS + +#define G_UDEV_TYPE_DEVICE (g_udev_device_get_type ()) +#define G_UDEV_DEVICE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_UDEV_TYPE_DEVICE, GUdevDevice)) +#define G_UDEV_DEVICE_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_UDEV_TYPE_DEVICE, GUdevDeviceClass)) +#define G_UDEV_IS_DEVICE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_UDEV_TYPE_DEVICE)) +#define G_UDEV_IS_DEVICE_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_UDEV_TYPE_DEVICE)) +#define G_UDEV_DEVICE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_UDEV_TYPE_DEVICE, GUdevDeviceClass)) + +typedef struct _GUdevDeviceClass GUdevDeviceClass; +typedef struct _GUdevDevicePrivate GUdevDevicePrivate; + +/** + * GUdevDevice: + * + * The #GUdevDevice struct is opaque and should not be accessed directly. + */ +struct _GUdevDevice +{ + GObject parent; + + /*< private >*/ + GUdevDevicePrivate *priv; +}; + +/** + * GUdevDeviceClass: + * @parent_class: Parent class. + * + * Class structure for #GUdevDevice. + */ +struct _GUdevDeviceClass +{ + GObjectClass parent_class; + + /*< private >*/ + /* Padding for future expansion */ + void (*reserved1) (void); + void (*reserved2) (void); + void (*reserved3) (void); + void (*reserved4) (void); + void (*reserved5) (void); + void (*reserved6) (void); + void (*reserved7) (void); + void (*reserved8) (void); +}; + +GType g_udev_device_get_type (void) G_GNUC_CONST; +gboolean g_udev_device_get_is_initialized (GUdevDevice *device); +guint64 g_udev_device_get_usec_since_initialized (GUdevDevice *device); +const gchar *g_udev_device_get_subsystem (GUdevDevice *device); +const gchar *g_udev_device_get_devtype (GUdevDevice *device); +const gchar *g_udev_device_get_name (GUdevDevice *device); +const gchar *g_udev_device_get_number (GUdevDevice *device); +const gchar *g_udev_device_get_sysfs_path (GUdevDevice *device); +const gchar *g_udev_device_get_driver (GUdevDevice *device); +const gchar *g_udev_device_get_action (GUdevDevice *device); +guint64 g_udev_device_get_seqnum (GUdevDevice *device); +GUdevDeviceType g_udev_device_get_device_type (GUdevDevice *device); +GUdevDeviceNumber g_udev_device_get_device_number (GUdevDevice *device); +const gchar *g_udev_device_get_device_file (GUdevDevice *device); +const gchar* const *g_udev_device_get_device_file_symlinks (GUdevDevice *device); +GUdevDevice *g_udev_device_get_parent (GUdevDevice *device); +GUdevDevice *g_udev_device_get_parent_with_subsystem (GUdevDevice *device, + const gchar *subsystem, + const gchar *devtype); +const gchar* const *g_udev_device_get_property_keys (GUdevDevice *device); +gboolean g_udev_device_has_property (GUdevDevice *device, + const gchar *key); +const gchar *g_udev_device_get_property (GUdevDevice *device, + const gchar *key); +gint g_udev_device_get_property_as_int (GUdevDevice *device, + const gchar *key); +guint64 g_udev_device_get_property_as_uint64 (GUdevDevice *device, + const gchar *key); +gdouble g_udev_device_get_property_as_double (GUdevDevice *device, + const gchar *key); +gboolean g_udev_device_get_property_as_boolean (GUdevDevice *device, + const gchar *key); +const gchar* const *g_udev_device_get_property_as_strv (GUdevDevice *device, + const gchar *key); + +const gchar *g_udev_device_get_sysfs_attr (GUdevDevice *device, + const gchar *name); +gint g_udev_device_get_sysfs_attr_as_int (GUdevDevice *device, + const gchar *name); +guint64 g_udev_device_get_sysfs_attr_as_uint64 (GUdevDevice *device, + const gchar *name); +gdouble g_udev_device_get_sysfs_attr_as_double (GUdevDevice *device, + const gchar *name); +gboolean g_udev_device_get_sysfs_attr_as_boolean (GUdevDevice *device, + const gchar *name); +const gchar* const *g_udev_device_get_sysfs_attr_as_strv (GUdevDevice *device, + const gchar *name); +const gchar* const *g_udev_device_get_tags (GUdevDevice *device); + +G_END_DECLS + +#endif /* __G_UDEV_DEVICE_H__ */ diff --git a/src/gudev/gudevenumerator.c b/src/gudev/gudevenumerator.c new file mode 100644 index 0000000000..db09074625 --- /dev/null +++ b/src/gudev/gudevenumerator.c @@ -0,0 +1,431 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008-2010 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include + +#include "gudevclient.h" +#include "gudevenumerator.h" +#include "gudevdevice.h" +#include "gudevmarshal.h" +#include "gudevprivate.h" + +/** + * SECTION:gudevenumerator + * @short_description: Lookup and sort devices + * + * #GUdevEnumerator is used to lookup and sort devices. + * + * Since: 165 + */ + +struct _GUdevEnumeratorPrivate +{ + GUdevClient *client; + struct udev_enumerate *e; +}; + +enum +{ + PROP_0, + PROP_CLIENT, +}; + +G_DEFINE_TYPE (GUdevEnumerator, g_udev_enumerator, G_TYPE_OBJECT) + +/* ---------------------------------------------------------------------------------------------------- */ + +static void +g_udev_enumerator_finalize (GObject *object) +{ + GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); + + if (enumerator->priv->client != NULL) + { + g_object_unref (enumerator->priv->client); + enumerator->priv->client = NULL; + } + + if (enumerator->priv->e != NULL) + { + udev_enumerate_unref (enumerator->priv->e); + enumerator->priv->e = NULL; + } + + if (G_OBJECT_CLASS (g_udev_enumerator_parent_class)->finalize != NULL) + G_OBJECT_CLASS (g_udev_enumerator_parent_class)->finalize (object); +} + +static void +g_udev_enumerator_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); + + switch (prop_id) + { + case PROP_CLIENT: + if (enumerator->priv->client != NULL) + g_object_unref (enumerator->priv->client); + enumerator->priv->client = g_value_dup_object (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +g_udev_enumerator_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); + + switch (prop_id) + { + case PROP_CLIENT: + g_value_set_object (value, enumerator->priv->client); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +g_udev_enumerator_constructed (GObject *object) +{ + GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); + + g_assert (G_UDEV_IS_CLIENT (enumerator->priv->client)); + + enumerator->priv->e = udev_enumerate_new (_g_udev_client_get_udev (enumerator->priv->client)); + + if (G_OBJECT_CLASS (g_udev_enumerator_parent_class)->constructed != NULL) + G_OBJECT_CLASS (g_udev_enumerator_parent_class)->constructed (object); +} + +static void +g_udev_enumerator_class_init (GUdevEnumeratorClass *klass) +{ + GObjectClass *gobject_class = (GObjectClass *) klass; + + gobject_class->finalize = g_udev_enumerator_finalize; + gobject_class->set_property = g_udev_enumerator_set_property; + gobject_class->get_property = g_udev_enumerator_get_property; + gobject_class->constructed = g_udev_enumerator_constructed; + + /** + * GUdevEnumerator:client: + * + * The #GUdevClient to enumerate devices from. + * + * Since: 165 + */ + g_object_class_install_property (gobject_class, + PROP_CLIENT, + g_param_spec_object ("client", + "The client to enumerate devices from", + "The client to enumerate devices from", + G_UDEV_TYPE_CLIENT, + G_PARAM_CONSTRUCT_ONLY | + G_PARAM_READWRITE)); + + g_type_class_add_private (klass, sizeof (GUdevEnumeratorPrivate)); +} + +static void +g_udev_enumerator_init (GUdevEnumerator *enumerator) +{ + enumerator->priv = G_TYPE_INSTANCE_GET_PRIVATE (enumerator, + G_UDEV_TYPE_ENUMERATOR, + GUdevEnumeratorPrivate); +} + +/** + * g_udev_enumerator_new: + * @client: A #GUdevClient to enumerate devices from. + * + * Constructs a #GUdevEnumerator object that can be used to enumerate + * and sort devices. Use the add_match_*() and add_nomatch_*() methods + * and execute the query to get a list of devices with + * g_udev_enumerator_execute(). + * + * Returns: A new #GUdevEnumerator object. Free with g_object_unref(). + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_new (GUdevClient *client) +{ + g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); + return G_UDEV_ENUMERATOR (g_object_new (G_UDEV_TYPE_ENUMERATOR, "client", client, NULL)); +} + + +/** + * g_udev_enumerator_add_match_subsystem: + * @enumerator: A #GUdevEnumerator. + * @subsystem: Wildcard for subsystem name e.g. 'scsi' or 'a*'. + * + * All returned devices will match the given @subsystem. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_match_subsystem (GUdevEnumerator *enumerator, + const gchar *subsystem) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (subsystem != NULL, NULL); + udev_enumerate_add_match_subsystem (enumerator->priv->e, subsystem); + return enumerator; +} + +/** + * g_udev_enumerator_add_nomatch_subsystem: + * @enumerator: A #GUdevEnumerator. + * @subsystem: Wildcard for subsystem name e.g. 'scsi' or 'a*'. + * + * All returned devices will not match the given @subsystem. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_nomatch_subsystem (GUdevEnumerator *enumerator, + const gchar *subsystem) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (subsystem != NULL, NULL); + udev_enumerate_add_nomatch_subsystem (enumerator->priv->e, subsystem); + return enumerator; +} + +/** + * g_udev_enumerator_add_match_sysfs_attr: + * @enumerator: A #GUdevEnumerator. + * @name: Wildcard filter for sysfs attribute key. + * @value: Wildcard filter for sysfs attribute value. + * + * All returned devices will have a sysfs attribute matching the given @name and @value. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_match_sysfs_attr (GUdevEnumerator *enumerator, + const gchar *name, + const gchar *value) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (name != NULL, NULL); + g_return_val_if_fail (value != NULL, NULL); + udev_enumerate_add_match_sysattr (enumerator->priv->e, name, value); + return enumerator; +} + +/** + * g_udev_enumerator_add_nomatch_sysfs_attr: + * @enumerator: A #GUdevEnumerator. + * @name: Wildcard filter for sysfs attribute key. + * @value: Wildcard filter for sysfs attribute value. + * + * All returned devices will not have a sysfs attribute matching the given @name and @value. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_nomatch_sysfs_attr (GUdevEnumerator *enumerator, + const gchar *name, + const gchar *value) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (name != NULL, NULL); + g_return_val_if_fail (value != NULL, NULL); + udev_enumerate_add_nomatch_sysattr (enumerator->priv->e, name, value); + return enumerator; +} + +/** + * g_udev_enumerator_add_match_property: + * @enumerator: A #GUdevEnumerator. + * @name: Wildcard filter for property name. + * @value: Wildcard filter for property value. + * + * All returned devices will have a property matching the given @name and @value. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_match_property (GUdevEnumerator *enumerator, + const gchar *name, + const gchar *value) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (name != NULL, NULL); + g_return_val_if_fail (value != NULL, NULL); + udev_enumerate_add_match_property (enumerator->priv->e, name, value); + return enumerator; +} + +/** + * g_udev_enumerator_add_match_name: + * @enumerator: A #GUdevEnumerator. + * @name: Wildcard filter for kernel name e.g. "sda*". + * + * All returned devices will match the given @name. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_match_name (GUdevEnumerator *enumerator, + const gchar *name) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (name != NULL, NULL); + udev_enumerate_add_match_sysname (enumerator->priv->e, name); + return enumerator; +} + +/** + * g_udev_enumerator_add_sysfs_path: + * @enumerator: A #GUdevEnumerator. + * @sysfs_path: A sysfs path, e.g. "/sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda" + * + * Add a device to the list of devices, to retrieve it back sorted in dependency order. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_sysfs_path (GUdevEnumerator *enumerator, + const gchar *sysfs_path) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (sysfs_path != NULL, NULL); + udev_enumerate_add_syspath (enumerator->priv->e, sysfs_path); + return enumerator; +} + +/** + * g_udev_enumerator_add_match_tag: + * @enumerator: A #GUdevEnumerator. + * @tag: A udev tag e.g. "udev-acl". + * + * All returned devices will match the given @tag. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_match_tag (GUdevEnumerator *enumerator, + const gchar *tag) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + g_return_val_if_fail (tag != NULL, NULL); + udev_enumerate_add_match_tag (enumerator->priv->e, tag); + return enumerator; +} + +/** + * g_udev_enumerator_add_match_is_initialized: + * @enumerator: A #GUdevEnumerator. + * + * All returned devices will be initialized. + * + * Returns: (transfer none): The passed in @enumerator. + * + * Since: 165 + */ +GUdevEnumerator * +g_udev_enumerator_add_match_is_initialized (GUdevEnumerator *enumerator) +{ + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + udev_enumerate_add_match_is_initialized (enumerator->priv->e); + return enumerator; +} + +/** + * g_udev_enumerator_execute: + * @enumerator: A #GUdevEnumerator. + * + * Executes the query in @enumerator. + * + * Returns: (element-type GUdevDevice) (transfer full): A list of #GUdevDevice objects. The caller should free the result by using g_object_unref() on each element in the list and then g_list_free() on the list. + * + * Since: 165 + */ +GList * +g_udev_enumerator_execute (GUdevEnumerator *enumerator) +{ + GList *ret; + struct udev_list_entry *l, *devices; + + g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); + + ret = NULL; + + /* retrieve the list */ + udev_enumerate_scan_devices (enumerator->priv->e); + + devices = udev_enumerate_get_list_entry (enumerator->priv->e); + for (l = devices; l != NULL; l = udev_list_entry_get_next (l)) + { + struct udev_device *udevice; + GUdevDevice *device; + + udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerator->priv->e), + udev_list_entry_get_name (l)); + if (udevice == NULL) + continue; + + device = _g_udev_device_new (udevice); + udev_device_unref (udevice); + ret = g_list_prepend (ret, device); + } + + ret = g_list_reverse (ret); + + return ret; +} diff --git a/src/gudev/gudevenumerator.h b/src/gudev/gudevenumerator.h new file mode 100644 index 0000000000..3fddccf573 --- /dev/null +++ b/src/gudev/gudevenumerator.h @@ -0,0 +1,107 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008-2010 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) +#error "Only can be included directly, this file may disappear or change contents." +#endif + +#ifndef __G_UDEV_ENUMERATOR_H__ +#define __G_UDEV_ENUMERATOR_H__ + +#include + +G_BEGIN_DECLS + +#define G_UDEV_TYPE_ENUMERATOR (g_udev_enumerator_get_type ()) +#define G_UDEV_ENUMERATOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_UDEV_TYPE_ENUMERATOR, GUdevEnumerator)) +#define G_UDEV_ENUMERATOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_UDEV_TYPE_ENUMERATOR, GUdevEnumeratorClass)) +#define G_UDEV_IS_ENUMERATOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_UDEV_TYPE_ENUMERATOR)) +#define G_UDEV_IS_ENUMERATOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_UDEV_TYPE_ENUMERATOR)) +#define G_UDEV_ENUMERATOR_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_UDEV_TYPE_ENUMERATOR, GUdevEnumeratorClass)) + +typedef struct _GUdevEnumeratorClass GUdevEnumeratorClass; +typedef struct _GUdevEnumeratorPrivate GUdevEnumeratorPrivate; + +/** + * GUdevEnumerator: + * + * The #GUdevEnumerator struct is opaque and should not be accessed directly. + * + * Since: 165 + */ +struct _GUdevEnumerator +{ + GObject parent; + + /*< private >*/ + GUdevEnumeratorPrivate *priv; +}; + +/** + * GUdevEnumeratorClass: + * @parent_class: Parent class. + * + * Class structure for #GUdevEnumerator. + * + * Since: 165 + */ +struct _GUdevEnumeratorClass +{ + GObjectClass parent_class; + + /*< private >*/ + /* Padding for future expansion */ + void (*reserved1) (void); + void (*reserved2) (void); + void (*reserved3) (void); + void (*reserved4) (void); + void (*reserved5) (void); + void (*reserved6) (void); + void (*reserved7) (void); + void (*reserved8) (void); +}; + +GType g_udev_enumerator_get_type (void) G_GNUC_CONST; +GUdevEnumerator *g_udev_enumerator_new (GUdevClient *client); +GUdevEnumerator *g_udev_enumerator_add_match_subsystem (GUdevEnumerator *enumerator, + const gchar *subsystem); +GUdevEnumerator *g_udev_enumerator_add_nomatch_subsystem (GUdevEnumerator *enumerator, + const gchar *subsystem); +GUdevEnumerator *g_udev_enumerator_add_match_sysfs_attr (GUdevEnumerator *enumerator, + const gchar *name, + const gchar *value); +GUdevEnumerator *g_udev_enumerator_add_nomatch_sysfs_attr (GUdevEnumerator *enumerator, + const gchar *name, + const gchar *value); +GUdevEnumerator *g_udev_enumerator_add_match_property (GUdevEnumerator *enumerator, + const gchar *name, + const gchar *value); +GUdevEnumerator *g_udev_enumerator_add_match_name (GUdevEnumerator *enumerator, + const gchar *name); +GUdevEnumerator *g_udev_enumerator_add_match_tag (GUdevEnumerator *enumerator, + const gchar *tag); +GUdevEnumerator *g_udev_enumerator_add_match_is_initialized (GUdevEnumerator *enumerator); +GUdevEnumerator *g_udev_enumerator_add_sysfs_path (GUdevEnumerator *enumerator, + const gchar *sysfs_path); +GList *g_udev_enumerator_execute (GUdevEnumerator *enumerator); + +G_END_DECLS + +#endif /* __G_UDEV_ENUMERATOR_H__ */ diff --git a/src/gudev/gudevenums.h b/src/gudev/gudevenums.h new file mode 100644 index 0000000000..c3a0aa8747 --- /dev/null +++ b/src/gudev/gudevenums.h @@ -0,0 +1,49 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) +#error "Only can be included directly, this file may disappear or change contents." +#endif + +#ifndef __G_UDEV_ENUMS_H__ +#define __G_UDEV_ENUMS_H__ + +#include + +G_BEGIN_DECLS + +/** + * GUdevDeviceType: + * @G_UDEV_DEVICE_TYPE_NONE: Device does not have a device file. + * @G_UDEV_DEVICE_TYPE_BLOCK: Device is a block device. + * @G_UDEV_DEVICE_TYPE_CHAR: Device is a character device. + * + * Enumeration used to specify a the type of a device. + */ +typedef enum +{ + G_UDEV_DEVICE_TYPE_NONE = 0, + G_UDEV_DEVICE_TYPE_BLOCK = 'b', + G_UDEV_DEVICE_TYPE_CHAR = 'c', +} GUdevDeviceType; + +G_END_DECLS + +#endif /* __G_UDEV_ENUMS_H__ */ diff --git a/src/gudev/gudevenumtypes.c.template b/src/gudev/gudevenumtypes.c.template new file mode 100644 index 0000000000..fc30b39e2e --- /dev/null +++ b/src/gudev/gudevenumtypes.c.template @@ -0,0 +1,39 @@ +/*** BEGIN file-header ***/ +#include + +/*** END file-header ***/ + +/*** BEGIN file-production ***/ +/* enumerations from "@filename@" */ +/*** END file-production ***/ + +/*** BEGIN value-header ***/ +GType +@enum_name@_get_type (void) +{ + static volatile gsize g_define_type_id__volatile = 0; + + if (g_once_init_enter (&g_define_type_id__volatile)) + { + static const G@Type@Value values[] = { +/*** END value-header ***/ + +/*** BEGIN value-production ***/ + { @VALUENAME@, "@VALUENAME@", "@valuenick@" }, +/*** END value-production ***/ + +/*** BEGIN value-tail ***/ + { 0, NULL, NULL } + }; + GType g_define_type_id = + g_@type@_register_static (g_intern_static_string ("@EnumName@"), values); + g_once_init_leave (&g_define_type_id__volatile, g_define_type_id); + } + + return g_define_type_id__volatile; +} + +/*** END value-tail ***/ + +/*** BEGIN file-tail ***/ +/*** END file-tail ***/ diff --git a/src/gudev/gudevenumtypes.h.template b/src/gudev/gudevenumtypes.h.template new file mode 100644 index 0000000000..d0ab3393e6 --- /dev/null +++ b/src/gudev/gudevenumtypes.h.template @@ -0,0 +1,24 @@ +/*** BEGIN file-header ***/ +#ifndef __GUDEV_ENUM_TYPES_H__ +#define __GUDEV_ENUM_TYPES_H__ + +#include + +G_BEGIN_DECLS +/*** END file-header ***/ + +/*** BEGIN file-production ***/ + +/* enumerations from "@filename@" */ +/*** END file-production ***/ + +/*** BEGIN value-header ***/ +GType @enum_name@_get_type (void) G_GNUC_CONST; +#define @ENUMPREFIX@_TYPE_@ENUMSHORT@ (@enum_name@_get_type ()) +/*** END value-header ***/ + +/*** BEGIN file-tail ***/ +G_END_DECLS + +#endif /* __GUDEV_ENUM_TYPES_H__ */ +/*** END file-tail ***/ diff --git a/src/gudev/gudevmarshal.list b/src/gudev/gudevmarshal.list new file mode 100644 index 0000000000..7e665999e8 --- /dev/null +++ b/src/gudev/gudevmarshal.list @@ -0,0 +1 @@ +VOID:STRING,OBJECT diff --git a/src/gudev/gudevprivate.h b/src/gudev/gudevprivate.h new file mode 100644 index 0000000000..8866f52b88 --- /dev/null +++ b/src/gudev/gudevprivate.h @@ -0,0 +1,41 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) +#error "Only can be included directly, this file may disappear or change contents." +#endif + +#ifndef __G_UDEV_PRIVATE_H__ +#define __G_UDEV_PRIVATE_H__ + +#include + +#include + +G_BEGIN_DECLS + +GUdevDevice * +_g_udev_device_new (struct udev_device *udevice); + +struct udev *_g_udev_client_get_udev (GUdevClient *client); + +G_END_DECLS + +#endif /* __G_UDEV_PRIVATE_H__ */ diff --git a/src/gudev/gudevtypes.h b/src/gudev/gudevtypes.h new file mode 100644 index 0000000000..888482783d --- /dev/null +++ b/src/gudev/gudevtypes.h @@ -0,0 +1,51 @@ +/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- + * + * Copyright (C) 2008 David Zeuthen + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) +#error "Only can be included directly, this file may disappear or change contents." +#endif + +#ifndef __G_UDEV_TYPES_H__ +#define __G_UDEV_TYPES_H__ + +#include +#include + +G_BEGIN_DECLS + +typedef struct _GUdevClient GUdevClient; +typedef struct _GUdevDevice GUdevDevice; +typedef struct _GUdevEnumerator GUdevEnumerator; + +/** + * GUdevDeviceNumber: + * + * Corresponds to the standard #dev_t type as defined by POSIX (Until + * bug 584517 is resolved this work-around is needed). + */ +#ifdef _GUDEV_WORK_AROUND_DEV_T_BUG +typedef guint64 GUdevDeviceNumber; /* __UQUAD_TYPE */ +#else +typedef dev_t GUdevDeviceNumber; +#endif + +G_END_DECLS + +#endif /* __G_UDEV_TYPES_H__ */ diff --git a/src/gudev/seed-example-enum.js b/src/gudev/seed-example-enum.js new file mode 100755 index 0000000000..66206ad806 --- /dev/null +++ b/src/gudev/seed-example-enum.js @@ -0,0 +1,38 @@ +#!/usr/bin/env seed + +const GLib = imports.gi.GLib; +const GUdev = imports.gi.GUdev; + +function print_device(device) { + print(" initialized: " + device.get_is_initialized()); + print(" usec since initialized: " + device.get_usec_since_initialized()); + print(" subsystem: " + device.get_subsystem()); + print(" devtype: " + device.get_devtype()); + print(" name: " + device.get_name()); + print(" number: " + device.get_number()); + print(" sysfs_path: " + device.get_sysfs_path()); + print(" driver: " + device.get_driver()); + print(" action: " + device.get_action()); + print(" seqnum: " + device.get_seqnum()); + print(" device type: " + device.get_device_type()); + print(" device number: " + device.get_device_number()); + print(" device file: " + device.get_device_file()); + print(" device file symlinks: " + device.get_device_file_symlinks()); + print(" tags: " + device.get_tags()); + var keys = device.get_property_keys(); + for (var n = 0; n < keys.length; n++) { + print(" " + keys[n] + "=" + device.get_property(keys[n])); + } +} + +var client = new GUdev.Client({subsystems: []}); +var enumerator = new GUdev.Enumerator({client: client}); +enumerator.add_match_subsystem('b*') + +var devices = enumerator.execute(); + +for (var n=0; n < devices.length; n++) { + var device = devices[n]; + print_device(device); + print(""); +} diff --git a/src/gudev/seed-example.js b/src/gudev/seed-example.js new file mode 100755 index 0000000000..e2ac324d23 --- /dev/null +++ b/src/gudev/seed-example.js @@ -0,0 +1,72 @@ +#!/usr/bin/env seed + +// seed example + +const GLib = imports.gi.GLib; +const GUdev = imports.gi.GUdev; + +function print_device (device) { + print (" subsystem: " + device.get_subsystem ()); + print (" devtype: " + device.get_devtype ()); + print (" name: " + device.get_name ()); + print (" number: " + device.get_number ()); + print (" sysfs_path: " + device.get_sysfs_path ()); + print (" driver: " + device.get_driver ()); + print (" action: " + device.get_action ()); + print (" seqnum: " + device.get_seqnum ()); + print (" device type: " + device.get_device_type ()); + print (" device number: " + device.get_device_number ()); + print (" device file: " + device.get_device_file ()); + print (" device file symlinks: " + device.get_device_file_symlinks ()); + print (" foo: " + device.get_sysfs_attr_as_strv ("stat")); + var keys = device.get_property_keys (); + for (var n = 0; n < keys.length; n++) { + print (" " + keys[n] + "=" + device.get_property (keys[n])); + } +} + +function on_uevent (client, action, device) { + print ("action " + action + " on device " + device.get_sysfs_path()); + print_device (device); + print (""); +} + +var client = new GUdev.Client ({subsystems: ["block", "usb/usb_interface"]}); +client.signal.connect ("uevent", on_uevent); + +var block_devices = client.query_by_subsystem ("block"); +for (var n = 0; n < block_devices.length; n++) { + print ("block device: " + block_devices[n].get_device_file ()); +} + +var d; + +d = client.query_by_device_number (GUdev.DeviceType.BLOCK, 0x0810); +if (d == null) { + print ("query_by_device_number 0x810 -> null"); +} else { + print ("query_by_device_number 0x810 -> " + d.get_device_file ()); + dd = d.get_parent_with_subsystem ("usb", null); + print_device (dd); + print ("--------------------------------------------------------------------------"); + while (d != null) { + print_device (d); + print (""); + d = d.get_parent (); + } +} + +d = client.query_by_sysfs_path ("/sys/block/sda/sda1"); +print ("query_by_sysfs_path (\"/sys/block/sda1\") -> " + d.get_device_file ()); + +d = client.query_by_subsystem_and_name ("block", "sda2"); +print ("query_by_subsystem_and_name (\"block\", \"sda2\") -> " + d.get_device_file ()); + +d = client.query_by_device_file ("/dev/sda"); +print ("query_by_device_file (\"/dev/sda\") -> " + d.get_device_file ()); + +d = client.query_by_device_file ("/dev/block/8:0"); +print ("query_by_device_file (\"/dev/block/8:0\") -> " + d.get_device_file ()); + +var mainloop = GLib.main_loop_new (); +GLib.main_loop_run (mainloop); diff --git a/src/libudev/libudev-device-private.c b/src/libudev/libudev-device-private.c new file mode 100644 index 0000000000..91fd06c025 --- /dev/null +++ b/src/libudev/libudev-device-private.c @@ -0,0 +1,185 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2010 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +static void udev_device_tag(struct udev_device *dev, const char *tag, bool add) +{ + const char *id; + struct udev *udev = udev_device_get_udev(dev); + char filename[UTIL_PATH_SIZE]; + + id = udev_device_get_id_filename(dev); + if (id == NULL) + return; + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/tags/", tag, "/", id, NULL); + + if (add) { + int fd; + + util_create_path(udev, filename); + fd = open(filename, O_WRONLY|O_CREAT|O_CLOEXEC|O_TRUNC|O_NOFOLLOW, 0444); + if (fd >= 0) + close(fd); + } else { + unlink(filename); + } +} + +int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add) +{ + struct udev_list_entry *list_entry; + bool found; + + if (add && dev_old != NULL) { + /* delete possible left-over tags */ + udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev_old)) { + const char *tag_old = udev_list_entry_get_name(list_entry); + struct udev_list_entry *list_entry_current; + + found = false; + udev_list_entry_foreach(list_entry_current, udev_device_get_tags_list_entry(dev)) { + const char *tag = udev_list_entry_get_name(list_entry_current); + + if (strcmp(tag, tag_old) == 0) { + found = true; + break; + } + } + if (!found) + udev_device_tag(dev_old, tag_old, false); + } + } + + udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev)) + udev_device_tag(dev, udev_list_entry_get_name(list_entry), add); + + return 0; +} + +static bool device_has_info(struct udev_device *udev_device) +{ + struct udev_list_entry *list_entry; + + if (udev_device_get_devlinks_list_entry(udev_device) != NULL) + return true; + if (udev_device_get_devlink_priority(udev_device) != 0) + return true; + udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) + if (udev_list_entry_get_num(list_entry)) + return true; + if (udev_device_get_tags_list_entry(udev_device) != NULL) + return true; + if (udev_device_get_watch_handle(udev_device) >= 0) + return true; + return false; +} + +int udev_device_update_db(struct udev_device *udev_device) +{ + bool has_info; + const char *id; + struct udev *udev = udev_device_get_udev(udev_device); + char filename[UTIL_PATH_SIZE]; + char filename_tmp[UTIL_PATH_SIZE]; + FILE *f; + + id = udev_device_get_id_filename(udev_device); + if (id == NULL) + return -1; + + has_info = device_has_info(udev_device); + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL); + + /* do not store anything for otherwise empty devices */ + if (!has_info && + major(udev_device_get_devnum(udev_device)) == 0 && + udev_device_get_ifindex(udev_device) == 0) { + unlink(filename); + return 0; + } + + /* write a database file */ + util_strscpyl(filename_tmp, sizeof(filename_tmp), filename, ".tmp", NULL); + util_create_path(udev, filename_tmp); + f = fopen(filename_tmp, "we"); + if (f == NULL) { + err(udev, "unable to create temporary db file '%s': %m\n", filename_tmp); + return -1; + } + + /* + * set 'sticky' bit to indicate that we should not clean the + * database when we transition from initramfs to the real root + */ + if (udev_device_get_db_persist(udev_device)) + fchmod(fileno(f), 01644); + + if (has_info) { + struct udev_list_entry *list_entry; + + if (major(udev_device_get_devnum(udev_device)) > 0) { + size_t devlen = strlen(udev_get_dev_path(udev))+1; + + udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(udev_device)) + fprintf(f, "S:%s\n", &udev_list_entry_get_name(list_entry)[devlen]); + if (udev_device_get_devlink_priority(udev_device) != 0) + fprintf(f, "L:%i\n", udev_device_get_devlink_priority(udev_device)); + if (udev_device_get_watch_handle(udev_device) >= 0) + fprintf(f, "W:%i\n", udev_device_get_watch_handle(udev_device)); + } + + if (udev_device_get_usec_initialized(udev_device) > 0) + fprintf(f, "I:%llu\n", udev_device_get_usec_initialized(udev_device)); + + udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) { + if (!udev_list_entry_get_num(list_entry)) + continue; + fprintf(f, "E:%s=%s\n", + udev_list_entry_get_name(list_entry), + udev_list_entry_get_value(list_entry)); + } + + udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device)) + fprintf(f, "G:%s\n", udev_list_entry_get_name(list_entry)); + } + + fclose(f); + rename(filename_tmp, filename); + dbg(udev, "created %s file '%s' for '%s'\n", has_info ? "db" : "empty", + filename, udev_device_get_devpath(udev_device)); + return 0; +} + +int udev_device_delete_db(struct udev_device *udev_device) +{ + const char *id; + struct udev *udev = udev_device_get_udev(udev_device); + char filename[UTIL_PATH_SIZE]; + + id = udev_device_get_id_filename(udev_device); + if (id == NULL) + return -1; + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL); + unlink(filename); + return 0; +} diff --git a/src/libudev/libudev-device.c b/src/libudev/libudev-device.c new file mode 100644 index 0000000000..257d6355fe --- /dev/null +++ b/src/libudev/libudev-device.c @@ -0,0 +1,1720 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2010 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +/** + * SECTION:libudev-device + * @short_description: kernel sys devices + * + * Representation of kernel sys devices. Devices are uniquely identified + * by their syspath, every device has exactly one path in the kernel sys + * filesystem. Devices usually belong to a kernel subsystem, and and have + * a unique name inside that subsystem. + */ + +/** + * udev_device: + * + * Opaque object representing one kernel sys device. + */ +struct udev_device { + struct udev *udev; + struct udev_device *parent_device; + char *syspath; + const char *devpath; + char *sysname; + const char *sysnum; + char *devnode; + mode_t devnode_mode; + char *subsystem; + char *devtype; + char *driver; + char *action; + char *devpath_old; + char *id_filename; + char **envp; + char *monitor_buf; + size_t monitor_buf_len; + struct udev_list devlinks_list; + struct udev_list properties_list; + struct udev_list sysattr_value_list; + struct udev_list sysattr_list; + struct udev_list tags_list; + unsigned long long int seqnum; + unsigned long long int usec_initialized; + int devlink_priority; + int refcount; + dev_t devnum; + int ifindex; + int watch_handle; + int maj, min; + bool parent_set; + bool subsystem_set; + bool devtype_set; + bool devlinks_uptodate; + bool envp_uptodate; + bool tags_uptodate; + bool driver_set; + bool info_loaded; + bool db_loaded; + bool uevent_loaded; + bool is_initialized; + bool sysattr_list_read; + bool db_persist; +}; + +/** + * udev_device_get_seqnum: + * @udev_device: udev device + * + * This is only valid if the device was received through a monitor. Devices read from + * sys do not have a sequence number. + * + * Returns: the kernel event sequence number, or 0 if there is no sequence number available. + **/ +_public_ unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return 0; + return udev_device->seqnum; +} + +static int udev_device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum) +{ + char num[32]; + + udev_device->seqnum = seqnum; + snprintf(num, sizeof(num), "%llu", seqnum); + udev_device_add_property(udev_device, "SEQNUM", num); + return 0; +} + +int udev_device_get_ifindex(struct udev_device *udev_device) +{ + if (!udev_device->info_loaded) + udev_device_read_uevent_file(udev_device); + return udev_device->ifindex; +} + +static int udev_device_set_ifindex(struct udev_device *udev_device, int ifindex) +{ + char num[32]; + + udev_device->ifindex = ifindex; + snprintf(num, sizeof(num), "%u", ifindex); + udev_device_add_property(udev_device, "IFINDEX", num); + return 0; +} + +/** + * udev_device_get_devnum: + * @udev_device: udev device + * + * Returns: the device major/minor number. + **/ +_public_ dev_t udev_device_get_devnum(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return makedev(0, 0); + if (!udev_device->info_loaded) + udev_device_read_uevent_file(udev_device); + return udev_device->devnum; +} + +static int udev_device_set_devnum(struct udev_device *udev_device, dev_t devnum) +{ + char num[32]; + + udev_device->devnum = devnum; + + snprintf(num, sizeof(num), "%u", major(devnum)); + udev_device_add_property(udev_device, "MAJOR", num); + snprintf(num, sizeof(num), "%u", minor(devnum)); + udev_device_add_property(udev_device, "MINOR", num); + return 0; +} + +const char *udev_device_get_devpath_old(struct udev_device *udev_device) +{ + return udev_device->devpath_old; +} + +static int udev_device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old) +{ + const char *pos; + + free(udev_device->devpath_old); + udev_device->devpath_old = strdup(devpath_old); + if (udev_device->devpath_old == NULL) + return -ENOMEM; + udev_device_add_property(udev_device, "DEVPATH_OLD", udev_device->devpath_old); + + pos = strrchr(udev_device->devpath_old, '/'); + if (pos == NULL) + return -EINVAL; + return 0; +} + +/** + * udev_device_get_driver: + * @udev_device: udev device + * + * Returns: the driver string, or #NULL if there is no driver attached. + **/ +_public_ const char *udev_device_get_driver(struct udev_device *udev_device) +{ + char driver[UTIL_NAME_SIZE]; + + if (udev_device == NULL) + return NULL; + if (!udev_device->driver_set) { + udev_device->driver_set = true; + if (util_get_sys_core_link_value(udev_device->udev, "driver", udev_device->syspath, driver, sizeof(driver)) > 0) + udev_device->driver = strdup(driver); + } + return udev_device->driver; +} + +static int udev_device_set_driver(struct udev_device *udev_device, const char *driver) +{ + free(udev_device->driver); + udev_device->driver = strdup(driver); + if (udev_device->driver == NULL) + return -ENOMEM; + udev_device->driver_set = true; + udev_device_add_property(udev_device, "DRIVER", udev_device->driver); + return 0; +} + +/** + * udev_device_get_devtype: + * @udev_device: udev device + * + * Retrieve the devtype string of the udev device. + * + * Returns: the devtype name of the udev device, or #NULL if it can not be determined + **/ +_public_ const char *udev_device_get_devtype(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + if (!udev_device->devtype_set) { + udev_device->devtype_set = true; + udev_device_read_uevent_file(udev_device); + } + return udev_device->devtype; +} + +static int udev_device_set_devtype(struct udev_device *udev_device, const char *devtype) +{ + free(udev_device->devtype); + udev_device->devtype = strdup(devtype); + if (udev_device->devtype == NULL) + return -ENOMEM; + udev_device->devtype_set = true; + udev_device_add_property(udev_device, "DEVTYPE", udev_device->devtype); + return 0; +} + +static int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem) +{ + free(udev_device->subsystem); + udev_device->subsystem = strdup(subsystem); + if (udev_device->subsystem == NULL) + return -ENOMEM; + udev_device->subsystem_set = true; + udev_device_add_property(udev_device, "SUBSYSTEM", udev_device->subsystem); + return 0; +} + +/** + * udev_device_get_subsystem: + * @udev_device: udev device + * + * Retrieve the subsystem string of the udev device. The string does not + * contain any "/". + * + * Returns: the subsystem name of the udev device, or #NULL if it can not be determined + **/ +_public_ const char *udev_device_get_subsystem(struct udev_device *udev_device) +{ + char subsystem[UTIL_NAME_SIZE]; + + if (udev_device == NULL) + return NULL; + if (!udev_device->subsystem_set) { + udev_device->subsystem_set = true; + /* read "subsystem" link */ + if (util_get_sys_core_link_value(udev_device->udev, "subsystem", udev_device->syspath, subsystem, sizeof(subsystem)) > 0) { + udev_device_set_subsystem(udev_device, subsystem); + return udev_device->subsystem; + } + /* implicit names */ + if (strncmp(udev_device->devpath, "/module/", 8) == 0) { + udev_device_set_subsystem(udev_device, "module"); + return udev_device->subsystem; + } + if (strstr(udev_device->devpath, "/drivers/") != NULL) { + udev_device_set_subsystem(udev_device, "drivers"); + return udev_device->subsystem; + } + if (strncmp(udev_device->devpath, "/subsystem/", 11) == 0 || + strncmp(udev_device->devpath, "/class/", 7) == 0 || + strncmp(udev_device->devpath, "/bus/", 5) == 0) { + udev_device_set_subsystem(udev_device, "subsystem"); + return udev_device->subsystem; + } + } + return udev_device->subsystem; +} + +mode_t udev_device_get_devnode_mode(struct udev_device *udev_device) +{ + if (!udev_device->info_loaded) + udev_device_read_uevent_file(udev_device); + return udev_device->devnode_mode; +} + +static int udev_device_set_devnode_mode(struct udev_device *udev_device, mode_t mode) +{ + char num[32]; + + udev_device->devnode_mode = mode; + snprintf(num, sizeof(num), "%#o", mode); + udev_device_add_property(udev_device, "DEVMODE", num); + return 0; +} + +struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value) +{ + udev_device->envp_uptodate = false; + if (value == NULL) { + struct udev_list_entry *list_entry; + + list_entry = udev_device_get_properties_list_entry(udev_device); + list_entry = udev_list_entry_get_by_name(list_entry, key); + if (list_entry != NULL) + udev_list_entry_delete(list_entry); + return NULL; + } + return udev_list_entry_add(&udev_device->properties_list, key, value); +} + +static struct udev_list_entry *udev_device_add_property_from_string(struct udev_device *udev_device, const char *property) +{ + char name[UTIL_LINE_SIZE]; + char *val; + + util_strscpy(name, sizeof(name), property); + val = strchr(name, '='); + if (val == NULL) + return NULL; + val[0] = '\0'; + val = &val[1]; + if (val[0] == '\0') + val = NULL; + return udev_device_add_property(udev_device, name, val); +} + +/* + * parse property string, and if needed, update internal values accordingly + * + * udev_device_add_property_from_string_parse_finish() needs to be + * called after adding properties, and its return value checked + * + * udev_device_set_info_loaded() needs to be set, to avoid trying + * to use a device without a DEVPATH set + */ +void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property) +{ + if (strncmp(property, "DEVPATH=", 8) == 0) { + char path[UTIL_PATH_SIZE]; + + util_strscpyl(path, sizeof(path), udev_get_sys_path(udev_device->udev), &property[8], NULL); + udev_device_set_syspath(udev_device, path); + } else if (strncmp(property, "SUBSYSTEM=", 10) == 0) { + udev_device_set_subsystem(udev_device, &property[10]); + } else if (strncmp(property, "DEVTYPE=", 8) == 0) { + udev_device_set_devtype(udev_device, &property[8]); + } else if (strncmp(property, "DEVNAME=", 8) == 0) { + udev_device_set_devnode(udev_device, &property[8]); + } else if (strncmp(property, "DEVLINKS=", 9) == 0) { + char devlinks[UTIL_PATH_SIZE]; + char *slink; + char *next; + + util_strscpy(devlinks, sizeof(devlinks), &property[9]); + slink = devlinks; + next = strchr(slink, ' '); + while (next != NULL) { + next[0] = '\0'; + udev_device_add_devlink(udev_device, slink, 0); + slink = &next[1]; + next = strchr(slink, ' '); + } + if (slink[0] != '\0') + udev_device_add_devlink(udev_device, slink, 0); + } else if (strncmp(property, "TAGS=", 5) == 0) { + char tags[UTIL_PATH_SIZE]; + char *next; + + util_strscpy(tags, sizeof(tags), &property[5]); + next = strchr(tags, ':'); + if (next != NULL) { + next++; + while (next[0] != '\0') { + char *tag; + + tag = next; + next = strchr(tag, ':'); + if (next == NULL) + break; + next[0] = '\0'; + next++; + udev_device_add_tag(udev_device, tag); + } + } + } else if (strncmp(property, "USEC_INITIALIZED=", 19) == 0) { + udev_device_set_usec_initialized(udev_device, strtoull(&property[19], NULL, 10)); + } else if (strncmp(property, "DRIVER=", 7) == 0) { + udev_device_set_driver(udev_device, &property[7]); + } else if (strncmp(property, "ACTION=", 7) == 0) { + udev_device_set_action(udev_device, &property[7]); + } else if (strncmp(property, "MAJOR=", 6) == 0) { + udev_device->maj = strtoull(&property[6], NULL, 10); + } else if (strncmp(property, "MINOR=", 6) == 0) { + udev_device->min = strtoull(&property[6], NULL, 10); + } else if (strncmp(property, "DEVPATH_OLD=", 12) == 0) { + udev_device_set_devpath_old(udev_device, &property[12]); + } else if (strncmp(property, "SEQNUM=", 7) == 0) { + udev_device_set_seqnum(udev_device, strtoull(&property[7], NULL, 10)); + } else if (strncmp(property, "IFINDEX=", 8) == 0) { + udev_device_set_ifindex(udev_device, strtoull(&property[8], NULL, 10)); + } else if (strncmp(property, "DEVMODE=", 8) == 0) { + udev_device_set_devnode_mode(udev_device, strtoul(&property[8], NULL, 8)); + } else { + udev_device_add_property_from_string(udev_device, property); + } +} + +int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device) +{ + if (udev_device->maj > 0) + udev_device_set_devnum(udev_device, makedev(udev_device->maj, udev_device->min)); + udev_device->maj = 0; + udev_device->min = 0; + + if (udev_device->devpath == NULL || udev_device->subsystem == NULL) + return -EINVAL; + return 0; +} + +/** + * udev_device_get_property_value: + * @udev_device: udev device + * @key: property name + * + * Returns: the value of a device property, or #NULL if there is no such property. + **/ +_public_ const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key) +{ + struct udev_list_entry *list_entry; + + if (udev_device == NULL) + return NULL; + if (key == NULL) + return NULL; + + list_entry = udev_device_get_properties_list_entry(udev_device); + list_entry = udev_list_entry_get_by_name(list_entry, key); + return udev_list_entry_get_value(list_entry); +} + +int udev_device_read_db(struct udev_device *udev_device, const char *dbfile) +{ + char filename[UTIL_PATH_SIZE]; + char line[UTIL_LINE_SIZE]; + FILE *f; + + /* providing a database file will always force-load it */ + if (dbfile == NULL) { + const char *id; + + if (udev_device->db_loaded) + return 0; + udev_device->db_loaded = true; + + id = udev_device_get_id_filename(udev_device); + if (id == NULL) + return -1; + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_device->udev), "/data/", id, NULL); + dbfile = filename; + } + + f = fopen(dbfile, "re"); + if (f == NULL) { + dbg(udev_device->udev, "no db file to read %s: %m\n", dbfile); + return -1; + } + udev_device->is_initialized = true; + + while (fgets(line, sizeof(line), f)) { + ssize_t len; + const char *val; + struct udev_list_entry *entry; + + len = strlen(line); + if (len < 4) + break; + line[len-1] = '\0'; + val = &line[2]; + switch(line[0]) { + case 'S': + util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/", val, NULL); + udev_device_add_devlink(udev_device, filename, 0); + break; + case 'L': + udev_device_set_devlink_priority(udev_device, atoi(val)); + break; + case 'E': + entry = udev_device_add_property_from_string(udev_device, val); + udev_list_entry_set_num(entry, true); + break; + case 'G': + udev_device_add_tag(udev_device, val); + break; + case 'W': + udev_device_set_watch_handle(udev_device, atoi(val)); + break; + case 'I': + udev_device_set_usec_initialized(udev_device, strtoull(val, NULL, 10)); + break; + } + } + fclose(f); + + dbg(udev_device->udev, "device %p filled with db file data\n", udev_device); + return 0; +} + +int udev_device_read_uevent_file(struct udev_device *udev_device) +{ + char filename[UTIL_PATH_SIZE]; + FILE *f; + char line[UTIL_LINE_SIZE]; + int maj = 0; + int min = 0; + + if (udev_device->uevent_loaded) + return 0; + + util_strscpyl(filename, sizeof(filename), udev_device->syspath, "/uevent", NULL); + f = fopen(filename, "re"); + if (f == NULL) + return -1; + udev_device->uevent_loaded = true; + + while (fgets(line, sizeof(line), f)) { + char *pos; + + pos = strchr(line, '\n'); + if (pos == NULL) + continue; + pos[0] = '\0'; + + if (strncmp(line, "DEVTYPE=", 8) == 0) { + udev_device_set_devtype(udev_device, &line[8]); + continue; + } + if (strncmp(line, "IFINDEX=", 8) == 0) { + udev_device_set_ifindex(udev_device, strtoull(&line[8], NULL, 10)); + continue; + } + if (strncmp(line, "DEVNAME=", 8) == 0) { + udev_device_set_devnode(udev_device, &line[8]); + continue; + } + + if (strncmp(line, "MAJOR=", 6) == 0) + maj = strtoull(&line[6], NULL, 10); + else if (strncmp(line, "MINOR=", 6) == 0) + min = strtoull(&line[6], NULL, 10); + else if (strncmp(line, "DEVMODE=", 8) == 0) + udev_device->devnode_mode = strtoul(&line[8], NULL, 8); + + udev_device_add_property_from_string(udev_device, line); + } + + udev_device->devnum = makedev(maj, min); + fclose(f); + return 0; +} + +void udev_device_set_info_loaded(struct udev_device *device) +{ + device->info_loaded = true; +} + +struct udev_device *udev_device_new(struct udev *udev) +{ + struct udev_device *udev_device; + struct udev_list_entry *list_entry; + + if (udev == NULL) + return NULL; + + udev_device = calloc(1, sizeof(struct udev_device)); + if (udev_device == NULL) + return NULL; + udev_device->refcount = 1; + udev_device->udev = udev; + udev_list_init(udev, &udev_device->devlinks_list, true); + udev_list_init(udev, &udev_device->properties_list, true); + udev_list_init(udev, &udev_device->sysattr_value_list, true); + udev_list_init(udev, &udev_device->sysattr_list, false); + udev_list_init(udev, &udev_device->tags_list, true); + udev_device->watch_handle = -1; + /* copy global properties */ + udev_list_entry_foreach(list_entry, udev_get_properties_list_entry(udev)) + udev_device_add_property(udev_device, + udev_list_entry_get_name(list_entry), + udev_list_entry_get_value(list_entry)); + return udev_device; +} + +/** + * udev_device_new_from_syspath: + * @udev: udev library context + * @syspath: sys device path including sys directory + * + * Create new udev device, and fill in information from the sys + * device and the udev database entry. The syspath is the absolute + * path to the device, including the sys mount point. + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev device. + * + * Returns: a new udev device, or #NULL, if it does not exist + **/ +_public_ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath) +{ + size_t len; + const char *subdir; + char path[UTIL_PATH_SIZE]; + char *pos; + struct stat statbuf; + struct udev_device *udev_device; + + if (udev == NULL) + return NULL; + if (syspath == NULL) + return NULL; + + /* path starts in sys */ + len = strlen(udev_get_sys_path(udev)); + if (strncmp(syspath, udev_get_sys_path(udev), len) != 0) { + dbg(udev, "not in sys :%s\n", syspath); + return NULL; + } + + /* path is not a root directory */ + subdir = &syspath[len+1]; + pos = strrchr(subdir, '/'); + if (pos == NULL || pos[1] == '\0' || pos < &subdir[2]) + return NULL; + + /* resolve possible symlink to real path */ + util_strscpy(path, sizeof(path), syspath); + util_resolve_sys_link(udev, path, sizeof(path)); + + if (strncmp(&path[len], "/devices/", 9) == 0) { + char file[UTIL_PATH_SIZE]; + + /* all "devices" require a "uevent" file */ + util_strscpyl(file, sizeof(file), path, "/uevent", NULL); + if (stat(file, &statbuf) != 0) + return NULL; + } else { + /* everything else just needs to be a directory */ + if (stat(path, &statbuf) != 0 || !S_ISDIR(statbuf.st_mode)) + return NULL; + } + + udev_device = udev_device_new(udev); + if (udev_device == NULL) + return NULL; + + udev_device_set_syspath(udev_device, path); + dbg(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device)); + + return udev_device; +} + +/** + * udev_device_new_from_devnum: + * @udev: udev library context + * @type: char or block device + * @devnum: device major/minor number + * + * Create new udev device, and fill in information from the sys + * device and the udev database entry. The device is looked-up + * by its major/minor number and type. Character and block device + * numbers are not unique across the two types. + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev device. + * + * Returns: a new udev device, or #NULL, if it does not exist + **/ +_public_ struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum) +{ + char path[UTIL_PATH_SIZE]; + const char *type_str; + + if (type == 'b') + type_str = "block"; + else if (type == 'c') + type_str = "char"; + else + return NULL; + + /* use /sys/dev/{block,char}/: link */ + snprintf(path, sizeof(path), "%s/dev/%s/%u:%u", + udev_get_sys_path(udev), type_str, major(devnum), minor(devnum)); + return udev_device_new_from_syspath(udev, path); +} + +struct udev_device *udev_device_new_from_id_filename(struct udev *udev, char *id) +{ + char type; + int maj, min; + char subsys[UTIL_PATH_SIZE]; + char *sysname; + + switch(id[0]) { + case 'b': + case 'c': + if (sscanf(id, "%c%i:%i", &type, &maj, &min) != 3) + return NULL; + return udev_device_new_from_devnum(udev, type, makedev(maj, min)); + case 'n': { + int sk; + struct ifreq ifr; + struct udev_device *dev; + int ifindex; + + ifindex = strtoul(&id[1], NULL, 10); + if (ifindex <= 0) + return NULL; + + sk = socket(PF_INET, SOCK_DGRAM, 0); + if (sk < 0) + return NULL; + memset(&ifr, 0x00, sizeof(struct ifreq)); + ifr.ifr_ifindex = ifindex; + if (ioctl(sk, SIOCGIFNAME, &ifr) != 0) { + close(sk); + return NULL; + } + close(sk); + + dev = udev_device_new_from_subsystem_sysname(udev, "net", ifr.ifr_name); + if (dev == NULL) + return NULL; + if (udev_device_get_ifindex(dev) == ifindex) + return dev; + udev_device_unref(dev); + return NULL; + } + case '+': + util_strscpy(subsys, sizeof(subsys), &id[1]); + sysname = strchr(subsys, ':'); + if (sysname == NULL) + return NULL; + sysname[0] = '\0'; + sysname = &sysname[1]; + return udev_device_new_from_subsystem_sysname(udev, subsys, sysname); + default: + return NULL; + } +} + +/** + * udev_device_new_from_subsystem_sysname: + * @udev: udev library context + * @subsystem: the subsystem of the device + * @sysname: the name of the device + * + * Create new udev device, and fill in information from the sys device + * and the udev database entry. The device is looked up by the subsystem + * and name string of the device, like "mem" / "zero", or "block" / "sda". + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev device. + * + * Returns: a new udev device, or #NULL, if it does not exist + **/ +_public_ struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname) +{ + char path_full[UTIL_PATH_SIZE]; + char *path; + size_t l; + struct stat statbuf; + + path = path_full; + l = util_strpcpyl(&path, sizeof(path_full), udev_get_sys_path(udev), NULL); + + if (strcmp(subsystem, "subsystem") == 0) { + util_strscpyl(path, l, "/subsystem/", sysname, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + + util_strscpyl(path, l, "/bus/", sysname, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + + util_strscpyl(path, l, "/class/", sysname, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + goto out; + } + + if (strcmp(subsystem, "module") == 0) { + util_strscpyl(path, l, "/module/", sysname, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + goto out; + } + + if (strcmp(subsystem, "drivers") == 0) { + char subsys[UTIL_NAME_SIZE]; + char *driver; + + util_strscpy(subsys, sizeof(subsys), sysname); + driver = strchr(subsys, ':'); + if (driver != NULL) { + driver[0] = '\0'; + driver = &driver[1]; + + util_strscpyl(path, l, "/subsystem/", subsys, "/drivers/", driver, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + + util_strscpyl(path, l, "/bus/", subsys, "/drivers/", driver, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + } + goto out; + } + + util_strscpyl(path, l, "/subsystem/", subsystem, "/devices/", sysname, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + + util_strscpyl(path, l, "/bus/", subsystem, "/devices/", sysname, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; + + util_strscpyl(path, l, "/class/", subsystem, "/", sysname, NULL); + if (stat(path_full, &statbuf) == 0) + goto found; +out: + return NULL; +found: + return udev_device_new_from_syspath(udev, path_full); +} + +/** + * udev_device_new_from_environment + * @udev: udev library context + * + * Create new udev device, and fill in information from the + * current process environment. This only works reliable if + * the process is called from a udev rule. It is usually used + * for tools executed from IMPORT= rules. + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev device. + * + * Returns: a new udev device, or #NULL, if it does not exist + **/ +_public_ struct udev_device *udev_device_new_from_environment(struct udev *udev) +{ + int i; + struct udev_device *udev_device; + + udev_device = udev_device_new(udev); + if (udev_device == NULL) + return NULL; + udev_device_set_info_loaded(udev_device); + + for (i = 0; environ[i] != NULL; i++) + udev_device_add_property_from_string_parse(udev_device, environ[i]); + + if (udev_device_add_property_from_string_parse_finish(udev_device) < 0) { + dbg(udev, "missing values, invalid device\n"); + udev_device_unref(udev_device); + udev_device = NULL; + } + + return udev_device; +} + +static struct udev_device *device_new_from_parent(struct udev_device *udev_device) +{ + struct udev_device *udev_device_parent = NULL; + char path[UTIL_PATH_SIZE]; + const char *subdir; + + util_strscpy(path, sizeof(path), udev_device->syspath); + subdir = &path[strlen(udev_get_sys_path(udev_device->udev))+1]; + for (;;) { + char *pos; + + pos = strrchr(subdir, '/'); + if (pos == NULL || pos < &subdir[2]) + break; + pos[0] = '\0'; + udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path); + if (udev_device_parent != NULL) + return udev_device_parent; + } + return NULL; +} + +/** + * udev_device_get_parent: + * @udev_device: the device to start searching from + * + * Find the next parent device, and fill in information from the sys + * device and the udev database entry. + * + * The returned the device is not referenced. It is attached to the + * child device, and will be cleaned up when the child device + * is cleaned up. + * + * It is not necessarily just the upper level directory, empty or not + * recognized sys directories are ignored. + * + * It can be called as many times as needed, without caring about + * references. + * + * Returns: a new udev device, or #NULL, if it no parent exist. + **/ +_public_ struct udev_device *udev_device_get_parent(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + if (!udev_device->parent_set) { + udev_device->parent_set = true; + udev_device->parent_device = device_new_from_parent(udev_device); + } + return udev_device->parent_device; +} + +/** + * udev_device_get_parent_with_subsystem_devtype: + * @udev_device: udev device to start searching from + * @subsystem: the subsystem of the device + * @devtype: the type (DEVTYPE) of the device + * + * Find the next parent device, with a matching subsystem and devtype + * value, and fill in information from the sys device and the udev + * database entry. + * + * If devtype is #NULL, only subsystem is checked, and any devtype will + * match. + * + * The returned the device is not referenced. It is attached to the + * child device, and will be cleaned up when the child device + * is cleaned up. + * + * It can be called as many times as needed, without caring about + * references. + * + * Returns: a new udev device, or #NULL if no matching parent exists. + **/ +_public_ struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype) +{ + struct udev_device *parent; + + if (subsystem == NULL) + return NULL; + + parent = udev_device_get_parent(udev_device); + while (parent != NULL) { + const char *parent_subsystem; + const char *parent_devtype; + + parent_subsystem = udev_device_get_subsystem(parent); + if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0) { + if (devtype == NULL) + break; + parent_devtype = udev_device_get_devtype(parent); + if (parent_devtype != NULL && strcmp(parent_devtype, devtype) == 0) + break; + } + parent = udev_device_get_parent(parent); + } + return parent; +} + +/** + * udev_device_get_udev: + * @udev_device: udev device + * + * Retrieve the udev library context the device was created with. + * + * Returns: the udev library context + **/ +_public_ struct udev *udev_device_get_udev(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + return udev_device->udev; +} + +/** + * udev_device_ref: + * @udev_device: udev device + * + * Take a reference of a udev device. + * + * Returns: the passed udev device + **/ +_public_ struct udev_device *udev_device_ref(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + udev_device->refcount++; + return udev_device; +} + +/** + * udev_device_unref: + * @udev_device: udev device + * + * Drop a reference of a udev device. If the refcount reaches zero, + * the resources of the device will be released. + * + **/ +_public_ void udev_device_unref(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return; + udev_device->refcount--; + if (udev_device->refcount > 0) + return; + if (udev_device->parent_device != NULL) + udev_device_unref(udev_device->parent_device); + free(udev_device->syspath); + free(udev_device->sysname); + free(udev_device->devnode); + free(udev_device->subsystem); + free(udev_device->devtype); + udev_list_cleanup(&udev_device->devlinks_list); + udev_list_cleanup(&udev_device->properties_list); + udev_list_cleanup(&udev_device->sysattr_value_list); + udev_list_cleanup(&udev_device->sysattr_list); + udev_list_cleanup(&udev_device->tags_list); + free(udev_device->action); + free(udev_device->driver); + free(udev_device->devpath_old); + free(udev_device->id_filename); + free(udev_device->envp); + free(udev_device->monitor_buf); + free(udev_device); +} + +/** + * udev_device_get_devpath: + * @udev_device: udev device + * + * Retrieve the kernel devpath value of the udev device. The path + * does not contain the sys mount point, and starts with a '/'. + * + * Returns: the devpath of the udev device + **/ +_public_ const char *udev_device_get_devpath(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + return udev_device->devpath; +} + +/** + * udev_device_get_syspath: + * @udev_device: udev device + * + * Retrieve the sys path of the udev device. The path is an + * absolute path and starts with the sys mount point. + * + * Returns: the sys path of the udev device + **/ +_public_ const char *udev_device_get_syspath(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + return udev_device->syspath; +} + +/** + * udev_device_get_sysname: + * @udev_device: udev device + * + * Returns: the sys name of the device device + **/ +_public_ const char *udev_device_get_sysname(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + return udev_device->sysname; +} + +/** + * udev_device_get_sysnum: + * @udev_device: udev device + * + * Returns: the trailing number of of the device name + **/ +_public_ const char *udev_device_get_sysnum(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + return udev_device->sysnum; +} + +/** + * udev_device_get_devnode: + * @udev_device: udev device + * + * Retrieve the device node file name belonging to the udev device. + * The path is an absolute path, and starts with the device directory. + * + * Returns: the device node file name of the udev device, or #NULL if no device node exists + **/ +_public_ const char *udev_device_get_devnode(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + if (udev_device->devnode != NULL) + return udev_device->devnode; + if (!udev_device->info_loaded) + udev_device_read_uevent_file(udev_device); + return udev_device->devnode; +} + +/** + * udev_device_get_devlinks_list_entry: + * @udev_device: udev device + * + * Retrieve the list of device links pointing to the device file of + * the udev device. The next list entry can be retrieved with + * udev_list_entry_get_next(), which returns #NULL if no more entries exist. + * The devlink path can be retrieved from the list entry by + * udev_list_entry_get_name(). The path is an absolute path, and starts with + * the device directory. + * + * Returns: the first entry of the device node link list + **/ +_public_ struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + if (!udev_device->info_loaded) + udev_device_read_db(udev_device, NULL); + return udev_list_get_entry(&udev_device->devlinks_list); +} + +void udev_device_cleanup_devlinks_list(struct udev_device *udev_device) +{ + udev_device->devlinks_uptodate = false; + udev_list_cleanup(&udev_device->devlinks_list); +} + +/** + * udev_device_get_properties_list_entry: + * @udev_device: udev device + * + * Retrieve the list of key/value device properties of the udev + * device. The next list entry can be retrieved with udev_list_entry_get_next(), + * which returns #NULL if no more entries exist. The property name + * can be retrieved from the list entry by udev_list_entry_get_name(), + * the property value by udev_list_entry_get_value(). + * + * Returns: the first entry of the property list + **/ +_public_ struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + if (!udev_device->info_loaded) { + udev_device_read_uevent_file(udev_device); + udev_device_read_db(udev_device, NULL); + } + if (!udev_device->devlinks_uptodate) { + char symlinks[UTIL_PATH_SIZE]; + struct udev_list_entry *list_entry; + + udev_device->devlinks_uptodate = true; + list_entry = udev_device_get_devlinks_list_entry(udev_device); + if (list_entry != NULL) { + char *s; + size_t l; + + s = symlinks; + l = util_strpcpyl(&s, sizeof(symlinks), udev_list_entry_get_name(list_entry), NULL); + udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) + l = util_strpcpyl(&s, l, " ", udev_list_entry_get_name(list_entry), NULL); + udev_device_add_property(udev_device, "DEVLINKS", symlinks); + } + } + if (!udev_device->tags_uptodate) { + udev_device->tags_uptodate = true; + if (udev_device_get_tags_list_entry(udev_device) != NULL) { + char tags[UTIL_PATH_SIZE]; + struct udev_list_entry *list_entry; + char *s; + size_t l; + + s = tags; + l = util_strpcpyl(&s, sizeof(tags), ":", NULL); + udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device)) + l = util_strpcpyl(&s, l, udev_list_entry_get_name(list_entry), ":", NULL); + udev_device_add_property(udev_device, "TAGS", tags); + } + } + return udev_list_get_entry(&udev_device->properties_list); +} + +/** + * udev_device_get_action: + * @udev_device: udev device + * + * This is only valid if the device was received through a monitor. Devices read from + * sys do not have an action string. Usual actions are: add, remove, change, online, + * offline. + * + * Returns: the kernel action value, or #NULL if there is no action value available. + **/ +_public_ const char *udev_device_get_action(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + return udev_device->action; +} + +/** + * udev_device_get_usec_since_initialized: + * @udev_device: udev device + * + * Return the number of microseconds passed since udev set up the + * device for the first time. + * + * This is only implemented for devices with need to store properties + * in the udev database. All other devices return 0 here. + * + * Returns: the number of microseconds since the device was first seen. + **/ +_public_ unsigned long long int udev_device_get_usec_since_initialized(struct udev_device *udev_device) +{ + unsigned long long now; + + if (udev_device == NULL) + return 0; + if (!udev_device->info_loaded) + udev_device_read_db(udev_device, NULL); + if (udev_device->usec_initialized == 0) + return 0; + now = now_usec(); + if (now == 0) + return 0; + return now - udev_device->usec_initialized; +} + +unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device) +{ + return udev_device->usec_initialized; +} + +void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized) +{ + char num[32]; + + udev_device->usec_initialized = usec_initialized; + snprintf(num, sizeof(num), "%llu", usec_initialized); + udev_device_add_property(udev_device, "USEC_INITIALIZED", num); +} + +/** + * udev_device_get_sysattr_value: + * @udev_device: udev device + * @sysattr: attribute name + * + * The retrieved value is cached in the device. Repeated calls will return the same + * value and not open the attribute again. + * + * Returns: the content of a sys attribute file, or #NULL if there is no sys attribute value. + **/ +_public_ const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr) +{ + struct udev_list_entry *list_entry; + char path[UTIL_PATH_SIZE]; + char value[4096]; + struct stat statbuf; + int fd; + ssize_t size; + const char *val = NULL; + + if (udev_device == NULL) + return NULL; + if (sysattr == NULL) + return NULL; + + /* look for possibly already cached result */ + list_entry = udev_list_get_entry(&udev_device->sysattr_value_list); + list_entry = udev_list_entry_get_by_name(list_entry, sysattr); + if (list_entry != NULL) + return udev_list_entry_get_value(list_entry); + + util_strscpyl(path, sizeof(path), udev_device_get_syspath(udev_device), "/", sysattr, NULL); + if (lstat(path, &statbuf) != 0) { + udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, NULL); + goto out; + } + + if (S_ISLNK(statbuf.st_mode)) { + struct udev_device *dev; + + /* + * Some core links return only the last element of the target path, + * these are just values, the paths should not be exposed. + */ + if (strcmp(sysattr, "driver") == 0 || + strcmp(sysattr, "subsystem") == 0 || + strcmp(sysattr, "module") == 0) { + if (util_get_sys_core_link_value(udev_device->udev, sysattr, + udev_device->syspath, value, sizeof(value)) < 0) + return NULL; + list_entry = udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, value); + val = udev_list_entry_get_value(list_entry); + goto out; + } + + /* resolve link to a device and return its syspath */ + util_strscpyl(path, sizeof(path), udev_device->syspath, "/", sysattr, NULL); + dev = udev_device_new_from_syspath(udev_device->udev, path); + if (dev != NULL) { + list_entry = udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, + udev_device_get_syspath(dev)); + val = udev_list_entry_get_value(list_entry); + udev_device_unref(dev); + } + + goto out; + } + + /* skip directories */ + if (S_ISDIR(statbuf.st_mode)) + goto out; + + /* skip non-readable files */ + if ((statbuf.st_mode & S_IRUSR) == 0) + goto out; + + /* read attribute value */ + fd = open(path, O_RDONLY|O_CLOEXEC); + if (fd < 0) + goto out; + size = read(fd, value, sizeof(value)); + close(fd); + if (size < 0) + goto out; + if (size == sizeof(value)) + goto out; + + /* got a valid value, store it in cache and return it */ + value[size] = '\0'; + util_remove_trailing_chars(value, '\n'); + list_entry = udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, value); + val = udev_list_entry_get_value(list_entry); +out: + return val; +} + +static int udev_device_sysattr_list_read(struct udev_device *udev_device) +{ + struct dirent *dent; + DIR *dir; + int num = 0; + + if (udev_device == NULL) + return -1; + if (udev_device->sysattr_list_read) + return 0; + + dir = opendir(udev_device_get_syspath(udev_device)); + if (!dir) + return -1; + + for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { + char path[UTIL_PATH_SIZE]; + struct stat statbuf; + + /* only handle symlinks and regular files */ + if (dent->d_type != DT_LNK && dent->d_type != DT_REG) + continue; + + util_strscpyl(path, sizeof(path), udev_device_get_syspath(udev_device), "/", dent->d_name, NULL); + if (lstat(path, &statbuf) != 0) + continue; + if ((statbuf.st_mode & S_IRUSR) == 0) + continue; + + udev_list_entry_add(&udev_device->sysattr_list, dent->d_name, NULL); + num++; + } + + closedir(dir); + udev_device->sysattr_list_read = true; + + return num; +} + +/** + * udev_device_get_sysattr_list_entry: + * @udev_device: udev device + * + * Retrieve the list of available sysattrs, with value being empty; + * This just return all available sysfs attributes for a particular + * device without reading their values. + * + * Returns: the first entry of the property list + **/ +_public_ struct udev_list_entry *udev_device_get_sysattr_list_entry(struct udev_device *udev_device) +{ + if (!udev_device->sysattr_list_read) { + int ret; + ret = udev_device_sysattr_list_read(udev_device); + if (0 > ret) + return NULL; + } + + return udev_list_get_entry(&udev_device->sysattr_list); +} + +int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath) +{ + const char *pos; + size_t len; + + free(udev_device->syspath); + udev_device->syspath = strdup(syspath); + if (udev_device->syspath == NULL) + return -ENOMEM; + udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))]; + udev_device_add_property(udev_device, "DEVPATH", udev_device->devpath); + + pos = strrchr(udev_device->syspath, '/'); + if (pos == NULL) + return -EINVAL; + udev_device->sysname = strdup(&pos[1]); + if (udev_device->sysname == NULL) + return -ENOMEM; + + /* some devices have '!' in their name, change that to '/' */ + len = 0; + while (udev_device->sysname[len] != '\0') { + if (udev_device->sysname[len] == '!') + udev_device->sysname[len] = '/'; + len++; + } + + /* trailing number */ + while (len > 0 && isdigit(udev_device->sysname[--len])) + udev_device->sysnum = &udev_device->sysname[len]; + + /* sysname is completely numeric */ + if (len == 0) + udev_device->sysnum = NULL; + + return 0; +} + +int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode) +{ + free(udev_device->devnode); + if (devnode[0] != '/') { + if (asprintf(&udev_device->devnode, "%s/%s", udev_get_dev_path(udev_device->udev), devnode) < 0) + udev_device->devnode = NULL; + } else { + udev_device->devnode = strdup(devnode); + } + if (udev_device->devnode == NULL) + return -ENOMEM; + udev_device_add_property(udev_device, "DEVNAME", udev_device->devnode); + return 0; +} + +int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink, int unique) +{ + struct udev_list_entry *list_entry; + + udev_device->devlinks_uptodate = false; + list_entry = udev_list_entry_add(&udev_device->devlinks_list, devlink, NULL); + if (list_entry == NULL) + return -ENOMEM; + if (unique) + udev_list_entry_set_num(list_entry, true); + return 0; +} + +const char *udev_device_get_id_filename(struct udev_device *udev_device) +{ + if (udev_device->id_filename == NULL) { + if (udev_device_get_subsystem(udev_device) == NULL) + return NULL; + + if (major(udev_device_get_devnum(udev_device)) > 0) { + /* use dev_t -- b259:131072, c254:0 */ + if (asprintf(&udev_device->id_filename, "%c%u:%u", + strcmp(udev_device_get_subsystem(udev_device), "block") == 0 ? 'b' : 'c', + major(udev_device_get_devnum(udev_device)), + minor(udev_device_get_devnum(udev_device))) < 0) + udev_device->id_filename = NULL; + } else if (udev_device_get_ifindex(udev_device) > 0) { + /* use netdev ifindex -- n3 */ + if (asprintf(&udev_device->id_filename, "n%u", udev_device_get_ifindex(udev_device)) < 0) + udev_device->id_filename = NULL; + } else { + /* + * use $subsys:$syname -- pci:0000:00:1f.2 + * sysname() has '!' translated, get it from devpath + */ + const char *sysname; + sysname = strrchr(udev_device->devpath, '/'); + if (sysname == NULL) + return NULL; + sysname = &sysname[1]; + if (asprintf(&udev_device->id_filename, "+%s:%s", udev_device_get_subsystem(udev_device), sysname) < 0) + udev_device->id_filename = NULL; + } + } + return udev_device->id_filename; +} + +/** + * udev_device_get_is_initialized: + * @udev_device: udev device + * + * Check if udev has already handled the device and has set up + * device node permissions and context, or has renamed a network + * device. + * + * This is only implemented for devices with a device node + * or network interfaces. All other devices return 1 here. + * + * Returns: 1 if the device is set up. 0 otherwise. + **/ +_public_ int udev_device_get_is_initialized(struct udev_device *udev_device) +{ + if (!udev_device->info_loaded) + udev_device_read_db(udev_device, NULL); + return udev_device->is_initialized; +} + +void udev_device_set_is_initialized(struct udev_device *udev_device) +{ + udev_device->is_initialized = true; +} + +int udev_device_add_tag(struct udev_device *udev_device, const char *tag) +{ + if (strchr(tag, ':') != NULL || strchr(tag, ' ') != NULL) + return -EINVAL; + udev_device->tags_uptodate = false; + if (udev_list_entry_add(&udev_device->tags_list, tag, NULL) != NULL) + return 0; + return -ENOMEM; +} + +void udev_device_cleanup_tags_list(struct udev_device *udev_device) +{ + udev_device->tags_uptodate = false; + udev_list_cleanup(&udev_device->tags_list); +} + +/** + * udev_device_get_tags_list_entry: + * @udev_device: udev device + * + * Retrieve the list of tags attached to the udev device. The next + * list entry can be retrieved with udev_list_entry_get_next(), + * which returns #NULL if no more entries exist. The tag string + * can be retrieved from the list entry by udev_list_entry_get_name(). + * + * Returns: the first entry of the tag list + **/ +_public_ struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_device *udev_device) +{ + if (udev_device == NULL) + return NULL; + if (!udev_device->info_loaded) + udev_device_read_db(udev_device, NULL); + return udev_list_get_entry(&udev_device->tags_list); +} + +_public_ int udev_device_has_tag(struct udev_device *udev_device, const char *tag) +{ + struct udev_list_entry *list_entry; + + if (udev_device == NULL) + return false; + if (!udev_device->info_loaded) + udev_device_read_db(udev_device, NULL); + list_entry = udev_device_get_tags_list_entry(udev_device); + if (udev_list_entry_get_by_name(list_entry, tag) != NULL) + return true; + return false; +} + +#define ENVP_SIZE 128 +#define MONITOR_BUF_SIZE 4096 +static int update_envp_monitor_buf(struct udev_device *udev_device) +{ + struct udev_list_entry *list_entry; + char *s; + size_t l; + unsigned int i; + + /* monitor buffer of property strings */ + free(udev_device->monitor_buf); + udev_device->monitor_buf_len = 0; + udev_device->monitor_buf = malloc(MONITOR_BUF_SIZE); + if (udev_device->monitor_buf == NULL) + return -ENOMEM; + + /* envp array, strings will point into monitor buffer */ + if (udev_device->envp == NULL) + udev_device->envp = malloc(sizeof(char *) * ENVP_SIZE); + if (udev_device->envp == NULL) + return -ENOMEM; + + i = 0; + s = udev_device->monitor_buf; + l = MONITOR_BUF_SIZE; + udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) { + const char *key; + + key = udev_list_entry_get_name(list_entry); + /* skip private variables */ + if (key[0] == '.') + continue; + + /* add string to envp array */ + udev_device->envp[i++] = s; + if (i+1 >= ENVP_SIZE) + return -EINVAL; + + /* add property string to monitor buffer */ + l = util_strpcpyl(&s, l, key, "=", udev_list_entry_get_value(list_entry), NULL); + if (l == 0) + return -EINVAL; + /* advance past the trailing '\0' that util_strpcpyl() guarantees */ + s++; + l--; + } + udev_device->envp[i] = NULL; + udev_device->monitor_buf_len = s - udev_device->monitor_buf; + udev_device->envp_uptodate = true; + return 0; +} + +char **udev_device_get_properties_envp(struct udev_device *udev_device) +{ + if (!udev_device->envp_uptodate) + if (update_envp_monitor_buf(udev_device) != 0) + return NULL; + return udev_device->envp; +} + +ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf) +{ + if (!udev_device->envp_uptodate) + if (update_envp_monitor_buf(udev_device) != 0) + return -EINVAL; + *buf = udev_device->monitor_buf; + return udev_device->monitor_buf_len; +} + +int udev_device_set_action(struct udev_device *udev_device, const char *action) +{ + free(udev_device->action); + udev_device->action = strdup(action); + if (udev_device->action == NULL) + return -ENOMEM; + udev_device_add_property(udev_device, "ACTION", udev_device->action); + return 0; +} + +int udev_device_get_devlink_priority(struct udev_device *udev_device) +{ + if (!udev_device->info_loaded) + udev_device_read_db(udev_device, NULL); + return udev_device->devlink_priority; +} + +int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio) +{ + udev_device->devlink_priority = prio; + return 0; +} + +int udev_device_get_watch_handle(struct udev_device *udev_device) +{ + if (!udev_device->info_loaded) + udev_device_read_db(udev_device, NULL); + return udev_device->watch_handle; +} + +int udev_device_set_watch_handle(struct udev_device *udev_device, int handle) +{ + udev_device->watch_handle = handle; + return 0; +} + +bool udev_device_get_db_persist(struct udev_device *udev_device) +{ + return udev_device->db_persist; +} + +void udev_device_set_db_persist(struct udev_device *udev_device) +{ + udev_device->db_persist = true; +} diff --git a/src/libudev/libudev-enumerate.c b/src/libudev/libudev-enumerate.c new file mode 100644 index 0000000000..7b9a732ce6 --- /dev/null +++ b/src/libudev/libudev-enumerate.c @@ -0,0 +1,936 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2010 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +/** + * SECTION:libudev-enumerate + * @short_description: lookup and sort sys devices + * + * Lookup devices in the sys filesystem, filter devices by properties, + * and return a sorted list of devices. + */ + +struct syspath { + char *syspath; + size_t len; +}; + +/** + * udev_enumerate: + * + * Opaque object representing one device lookup/sort context. + */ +struct udev_enumerate { + struct udev *udev; + int refcount; + struct udev_list sysattr_match_list; + struct udev_list sysattr_nomatch_list; + struct udev_list subsystem_match_list; + struct udev_list subsystem_nomatch_list; + struct udev_list sysname_match_list; + struct udev_list properties_match_list; + struct udev_list tags_match_list; + struct udev_device *parent_match; + struct udev_list devices_list; + struct syspath *devices; + unsigned int devices_cur; + unsigned int devices_max; + bool devices_uptodate:1; + bool match_is_initialized; +}; + +/** + * udev_enumerate_new: + * @udev: udev library context + * + * Returns: an enumeration context + **/ +_public_ struct udev_enumerate *udev_enumerate_new(struct udev *udev) +{ + struct udev_enumerate *udev_enumerate; + + udev_enumerate = calloc(1, sizeof(struct udev_enumerate)); + if (udev_enumerate == NULL) + return NULL; + udev_enumerate->refcount = 1; + udev_enumerate->udev = udev; + udev_list_init(udev, &udev_enumerate->sysattr_match_list, false); + udev_list_init(udev, &udev_enumerate->sysattr_nomatch_list, false); + udev_list_init(udev, &udev_enumerate->subsystem_match_list, true); + udev_list_init(udev, &udev_enumerate->subsystem_nomatch_list, true); + udev_list_init(udev, &udev_enumerate->sysname_match_list, true); + udev_list_init(udev, &udev_enumerate->properties_match_list, false); + udev_list_init(udev, &udev_enumerate->tags_match_list, true); + udev_list_init(udev, &udev_enumerate->devices_list, false); + return udev_enumerate; +} + +/** + * udev_enumerate_ref: + * @udev_enumerate: context + * + * Take a reference of a enumeration context. + * + * Returns: the passed enumeration context + **/ +_public_ struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate) +{ + if (udev_enumerate == NULL) + return NULL; + udev_enumerate->refcount++; + return udev_enumerate; +} + +/** + * udev_enumerate_unref: + * @udev_enumerate: context + * + * Drop a reference of an enumeration context. If the refcount reaches zero, + * all resources of the enumeration context will be released. + **/ +_public_ void udev_enumerate_unref(struct udev_enumerate *udev_enumerate) +{ + unsigned int i; + + if (udev_enumerate == NULL) + return; + udev_enumerate->refcount--; + if (udev_enumerate->refcount > 0) + return; + udev_list_cleanup(&udev_enumerate->sysattr_match_list); + udev_list_cleanup(&udev_enumerate->sysattr_nomatch_list); + udev_list_cleanup(&udev_enumerate->subsystem_match_list); + udev_list_cleanup(&udev_enumerate->subsystem_nomatch_list); + udev_list_cleanup(&udev_enumerate->sysname_match_list); + udev_list_cleanup(&udev_enumerate->properties_match_list); + udev_list_cleanup(&udev_enumerate->tags_match_list); + udev_device_unref(udev_enumerate->parent_match); + udev_list_cleanup(&udev_enumerate->devices_list); + for (i = 0; i < udev_enumerate->devices_cur; i++) + free(udev_enumerate->devices[i].syspath); + free(udev_enumerate->devices); + free(udev_enumerate); +} + +/** + * udev_enumerate_get_udev: + * @udev_enumerate: context + * + * Returns: the udev library context. + */ +_public_ struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate) +{ + if (udev_enumerate == NULL) + return NULL; + return udev_enumerate->udev; +} + +static int syspath_add(struct udev_enumerate *udev_enumerate, const char *syspath) +{ + char *path; + struct syspath *entry; + + /* double array size if needed */ + if (udev_enumerate->devices_cur >= udev_enumerate->devices_max) { + struct syspath *buf; + unsigned int add; + + add = udev_enumerate->devices_max; + if (add < 1024) + add = 1024; + buf = realloc(udev_enumerate->devices, (udev_enumerate->devices_max + add) * sizeof(struct syspath)); + if (buf == NULL) + return -ENOMEM; + udev_enumerate->devices = buf; + udev_enumerate->devices_max += add; + } + + path = strdup(syspath); + if (path == NULL) + return -ENOMEM; + entry = &udev_enumerate->devices[udev_enumerate->devices_cur]; + entry->syspath = path; + entry->len = strlen(path); + udev_enumerate->devices_cur++; + udev_enumerate->devices_uptodate = false; + return 0; +} + +static int syspath_cmp(const void *p1, const void *p2) +{ + const struct syspath *path1 = p1; + const struct syspath *path2 = p2; + size_t len; + int ret; + + len = MIN(path1->len, path2->len); + ret = memcmp(path1->syspath, path2->syspath, len); + if (ret == 0) { + if (path1->len < path2->len) + ret = -1; + else if (path1->len > path2->len) + ret = 1; + } + return ret; +} + +/* For devices that should be moved to the absolute end of the list */ +static bool devices_delay_end(struct udev *udev, const char *syspath) +{ + static const char *delay_device_list[] = { + "/block/md", + "/block/dm-", + NULL + }; + size_t len; + int i; + + len = strlen(udev_get_sys_path(udev)); + for (i = 0; delay_device_list[i] != NULL; i++) { + if (strstr(&syspath[len], delay_device_list[i]) != NULL) + return true; + } + return false; +} + +/* For devices that should just be moved a little bit later, just + * before the point where some common path prefix changes. Returns the + * number of characters that make up that common prefix */ +static size_t devices_delay_later(struct udev *udev, const char *syspath) +{ + const char *c; + + /* For sound cards the control device must be enumerated last + * to make sure it's the final device node that gets ACLs + * applied. Applications rely on this fact and use ACL changes + * on the control node as an indicator that the ACL change of + * the entire sound card completed. The kernel makes this + * guarantee when creating those devices, and hence we should + * too when enumerating them. */ + + if ((c = strstr(syspath, "/sound/card"))) { + c += 11; + c += strcspn(c, "/"); + + if (strncmp(c, "/controlC", 9) == 0) + return c - syspath + 1; + } + + return 0; +} + +/** + * udev_enumerate_get_list_entry: + * @udev_enumerate: context + * + * Returns: the first entry of the sorted list of device paths. + */ +_public_ struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate) +{ + if (udev_enumerate == NULL) + return NULL; + if (!udev_enumerate->devices_uptodate) { + unsigned int i; + unsigned int max; + struct syspath *prev = NULL, *move_later = NULL; + size_t move_later_prefix = 0; + + udev_list_cleanup(&udev_enumerate->devices_list); + qsort(udev_enumerate->devices, udev_enumerate->devices_cur, sizeof(struct syspath), syspath_cmp); + + max = udev_enumerate->devices_cur; + for (i = 0; i < max; i++) { + struct syspath *entry = &udev_enumerate->devices[i]; + + /* skip duplicated entries */ + if (prev != NULL && + entry->len == prev->len && + memcmp(entry->syspath, prev->syspath, entry->len) == 0) + continue; + prev = entry; + + /* skip to be delayed devices, and add them to the end of the list */ + if (devices_delay_end(udev_enumerate->udev, entry->syspath)) { + syspath_add(udev_enumerate, entry->syspath); + /* need to update prev here for the case realloc() gives a different address */ + prev = &udev_enumerate->devices[i]; + continue; + } + + /* skip to be delayed devices, and move the to + * the point where the prefix changes. We can + * only move one item at a time. */ + if (!move_later) { + move_later_prefix = devices_delay_later(udev_enumerate->udev, entry->syspath); + + if (move_later_prefix > 0) { + move_later = entry; + continue; + } + } + + if (move_later && + strncmp(entry->syspath, move_later->syspath, move_later_prefix) != 0) { + + udev_list_entry_add(&udev_enumerate->devices_list, move_later->syspath, NULL); + move_later = NULL; + } + + udev_list_entry_add(&udev_enumerate->devices_list, entry->syspath, NULL); + } + + if (move_later) + udev_list_entry_add(&udev_enumerate->devices_list, move_later->syspath, NULL); + + /* add and cleanup delayed devices from end of list */ + for (i = max; i < udev_enumerate->devices_cur; i++) { + struct syspath *entry = &udev_enumerate->devices[i]; + + udev_list_entry_add(&udev_enumerate->devices_list, entry->syspath, NULL); + free(entry->syspath); + } + udev_enumerate->devices_cur = max; + + udev_enumerate->devices_uptodate = true; + } + return udev_list_get_entry(&udev_enumerate->devices_list); +} + +/** + * udev_enumerate_add_match_subsystem: + * @udev_enumerate: context + * @subsystem: filter for a subsystem of the device to include in the list + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (subsystem == NULL) + return 0; + if (udev_list_entry_add(&udev_enumerate->subsystem_match_list, subsystem, NULL) == NULL) + return -ENOMEM; + return 0; +} + +/** + * udev_enumerate_add_nomatch_subsystem: + * @udev_enumerate: context + * @subsystem: filter for a subsystem of the device to exclude from the list + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (subsystem == NULL) + return 0; + if (udev_list_entry_add(&udev_enumerate->subsystem_nomatch_list, subsystem, NULL) == NULL) + return -ENOMEM; + return 0; +} + +/** + * udev_enumerate_add_match_sysattr: + * @udev_enumerate: context + * @sysattr: filter for a sys attribute at the device to include in the list + * @value: optional value of the sys attribute + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (sysattr == NULL) + return 0; + if (udev_list_entry_add(&udev_enumerate->sysattr_match_list, sysattr, value) == NULL) + return -ENOMEM; + return 0; +} + +/** + * udev_enumerate_add_nomatch_sysattr: + * @udev_enumerate: context + * @sysattr: filter for a sys attribute at the device to exclude from the list + * @value: optional value of the sys attribute + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (sysattr == NULL) + return 0; + if (udev_list_entry_add(&udev_enumerate->sysattr_nomatch_list, sysattr, value) == NULL) + return -ENOMEM; + return 0; +} + +static int match_sysattr_value(struct udev_device *dev, const char *sysattr, const char *match_val) +{ + const char *val = NULL; + bool match = false; + + val = udev_device_get_sysattr_value(dev, sysattr); + if (val == NULL) + goto exit; + if (match_val == NULL) { + match = true; + goto exit; + } + if (fnmatch(match_val, val, 0) == 0) { + match = true; + goto exit; + } +exit: + return match; +} + +/** + * udev_enumerate_add_match_property: + * @udev_enumerate: context + * @property: filter for a property of the device to include in the list + * @value: value of the property + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (property == NULL) + return 0; + if (udev_list_entry_add(&udev_enumerate->properties_match_list, property, value) == NULL) + return -ENOMEM; + return 0; +} + +/** + * udev_enumerate_add_match_tag: + * @udev_enumerate: context + * @tag: filter for a tag of the device to include in the list + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_match_tag(struct udev_enumerate *udev_enumerate, const char *tag) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (tag == NULL) + return 0; + if (udev_list_entry_add(&udev_enumerate->tags_match_list, tag, NULL) == NULL) + return -ENOMEM; + return 0; +} + +/** + * udev_enumerate_add_match_parent: + * @udev_enumerate: context + * @parent: parent device where to start searching + * + * Return the devices on the subtree of one given device. The parent + * itself is included in the list. + * + * A reference for the device is held until the udev_enumerate context + * is cleaned up. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_match_parent(struct udev_enumerate *udev_enumerate, struct udev_device *parent) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (parent == NULL) + return 0; + if (udev_enumerate->parent_match != NULL) + udev_device_unref(udev_enumerate->parent_match); + udev_enumerate->parent_match = udev_device_ref(parent); + return 0; +} + +/** + * udev_enumerate_add_match_is_initialized: + * @udev_enumerate: context + * + * Match only devices which udev has set up already. This makes + * sure, that the device node permissions and context are properly set + * and that network devices are fully renamed. + * + * Usually, devices which are found in the kernel but not already + * handled by udev, have still pending events. Services should subscribe + * to monitor events and wait for these devices to become ready, instead + * of using uninitialized devices. + * + * For now, this will not affect devices which do not have a device node + * and are not network interfaces. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_match_is_initialized(struct udev_enumerate *udev_enumerate) +{ + if (udev_enumerate == NULL) + return -EINVAL; + udev_enumerate->match_is_initialized = true; + return 0; +} + +/** + * udev_enumerate_add_match_sysname: + * @udev_enumerate: context + * @sysname: filter for the name of the device to include in the list + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname) +{ + if (udev_enumerate == NULL) + return -EINVAL; + if (sysname == NULL) + return 0; + if (udev_list_entry_add(&udev_enumerate->sysname_match_list, sysname, NULL) == NULL) + return -ENOMEM; + return 0; +} + +static bool match_sysattr(struct udev_enumerate *udev_enumerate, struct udev_device *dev) +{ + struct udev_list_entry *list_entry; + + /* skip list */ + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->sysattr_nomatch_list)) { + if (match_sysattr_value(dev, udev_list_entry_get_name(list_entry), + udev_list_entry_get_value(list_entry))) + return false; + } + /* include list */ + if (udev_list_get_entry(&udev_enumerate->sysattr_match_list) != NULL) { + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->sysattr_match_list)) { + /* anything that does not match, will make it FALSE */ + if (!match_sysattr_value(dev, udev_list_entry_get_name(list_entry), + udev_list_entry_get_value(list_entry))) + return false; + } + return true; + } + return true; +} + +static bool match_property(struct udev_enumerate *udev_enumerate, struct udev_device *dev) +{ + struct udev_list_entry *list_entry; + bool match = false; + + /* no match always matches */ + if (udev_list_get_entry(&udev_enumerate->properties_match_list) == NULL) + return true; + + /* loop over matches */ + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->properties_match_list)) { + const char *match_key = udev_list_entry_get_name(list_entry); + const char *match_value = udev_list_entry_get_value(list_entry); + struct udev_list_entry *property_entry; + + /* loop over device properties */ + udev_list_entry_foreach(property_entry, udev_device_get_properties_list_entry(dev)) { + const char *dev_key = udev_list_entry_get_name(property_entry); + const char *dev_value = udev_list_entry_get_value(property_entry); + + if (fnmatch(match_key, dev_key, 0) != 0) + continue; + if (match_value == NULL && dev_value == NULL) { + match = true; + goto out; + } + if (match_value == NULL || dev_value == NULL) + continue; + if (fnmatch(match_value, dev_value, 0) == 0) { + match = true; + goto out; + } + } + } +out: + return match; +} + +static bool match_tag(struct udev_enumerate *udev_enumerate, struct udev_device *dev) +{ + struct udev_list_entry *list_entry; + + /* no match always matches */ + if (udev_list_get_entry(&udev_enumerate->tags_match_list) == NULL) + return true; + + /* loop over matches */ + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->tags_match_list)) + if (!udev_device_has_tag(dev, udev_list_entry_get_name(list_entry))) + return false; + + return true; +} + +static bool match_parent(struct udev_enumerate *udev_enumerate, struct udev_device *dev) +{ + const char *parent; + + if (udev_enumerate->parent_match == NULL) + return true; + + parent = udev_device_get_devpath(udev_enumerate->parent_match); + return strncmp(parent, udev_device_get_devpath(dev), strlen(parent)) == 0; +} + +static bool match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname) +{ + struct udev_list_entry *list_entry; + + if (udev_list_get_entry(&udev_enumerate->sysname_match_list) == NULL) + return true; + + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->sysname_match_list)) { + if (fnmatch(udev_list_entry_get_name(list_entry), sysname, 0) != 0) + continue; + return true; + } + return false; +} + +static int scan_dir_and_add_devices(struct udev_enumerate *udev_enumerate, + const char *basedir, const char *subdir1, const char *subdir2) +{ + struct udev *udev = udev_enumerate_get_udev(udev_enumerate); + char path[UTIL_PATH_SIZE]; + size_t l; + char *s; + DIR *dir; + struct dirent *dent; + + s = path; + l = util_strpcpyl(&s, sizeof(path), udev_get_sys_path(udev), "/", basedir, NULL); + if (subdir1 != NULL) + l = util_strpcpyl(&s, l, "/", subdir1, NULL); + if (subdir2 != NULL) + util_strpcpyl(&s, l, "/", subdir2, NULL); + dir = opendir(path); + if (dir == NULL) + return -ENOENT; + for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { + char syspath[UTIL_PATH_SIZE]; + struct udev_device *dev; + + if (dent->d_name[0] == '.') + continue; + + if (!match_sysname(udev_enumerate, dent->d_name)) + continue; + + util_strscpyl(syspath, sizeof(syspath), path, "/", dent->d_name, NULL); + dev = udev_device_new_from_syspath(udev_enumerate->udev, syspath); + if (dev == NULL) + continue; + + if (udev_enumerate->match_is_initialized) { + /* + * All devices with a device node or network interfaces + * possibly need udev to adjust the device node permission + * or context, or rename the interface before it can be + * reliably used from other processes. + * + * For now, we can only check these types of devices, we + * might not store a database, and have no way to find out + * for all other types of devices. + */ + if (!udev_device_get_is_initialized(dev) && + (major(udev_device_get_devnum(dev)) > 0 || udev_device_get_ifindex(dev) > 0)) + goto nomatch; + } + if (!match_parent(udev_enumerate, dev)) + goto nomatch; + if (!match_tag(udev_enumerate, dev)) + goto nomatch; + if (!match_property(udev_enumerate, dev)) + goto nomatch; + if (!match_sysattr(udev_enumerate, dev)) + goto nomatch; + + syspath_add(udev_enumerate, udev_device_get_syspath(dev)); +nomatch: + udev_device_unref(dev); + } + closedir(dir); + return 0; +} + +static bool match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem) +{ + struct udev_list_entry *list_entry; + + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->subsystem_nomatch_list)) { + if (fnmatch(udev_list_entry_get_name(list_entry), subsystem, 0) == 0) + return false; + } + if (udev_list_get_entry(&udev_enumerate->subsystem_match_list) != NULL) { + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->subsystem_match_list)) { + if (fnmatch(udev_list_entry_get_name(list_entry), subsystem, 0) == 0) + return true; + } + return false; + } + return true; +} + +static int scan_dir(struct udev_enumerate *udev_enumerate, const char *basedir, const char *subdir, const char *subsystem) +{ + struct udev *udev = udev_enumerate_get_udev(udev_enumerate); + + char path[UTIL_PATH_SIZE]; + DIR *dir; + struct dirent *dent; + + util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), "/", basedir, NULL); + dir = opendir(path); + if (dir == NULL) + return -1; + for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { + if (dent->d_name[0] == '.') + continue; + if (!match_subsystem(udev_enumerate, subsystem != NULL ? subsystem : dent->d_name)) + continue; + scan_dir_and_add_devices(udev_enumerate, basedir, dent->d_name, subdir); + } + closedir(dir); + return 0; +} + +/** + * udev_enumerate_add_syspath: + * @udev_enumerate: context + * @syspath: path of a device + * + * Add a device to the list of devices, to retrieve it back sorted in dependency order. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath) +{ + struct udev_device *udev_device; + + if (udev_enumerate == NULL) + return -EINVAL; + if (syspath == NULL) + return 0; + /* resolve to real syspath */ + udev_device = udev_device_new_from_syspath(udev_enumerate->udev, syspath); + if (udev_device == NULL) + return -EINVAL; + syspath_add(udev_enumerate, udev_device_get_syspath(udev_device)); + udev_device_unref(udev_device); + return 0; +} + +static int scan_devices_tags(struct udev_enumerate *udev_enumerate) +{ + struct udev *udev = udev_enumerate_get_udev(udev_enumerate); + struct udev_list_entry *list_entry; + + /* scan only tagged devices, use tags reverse-index, instead of searching all devices in /sys */ + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->tags_match_list)) { + DIR *dir; + struct dirent *dent; + char path[UTIL_PATH_SIZE]; + + util_strscpyl(path, sizeof(path), udev_get_run_path(udev), "/tags/", + udev_list_entry_get_name(list_entry), NULL); + dir = opendir(path); + if (dir == NULL) + continue; + for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { + struct udev_device *dev; + + if (dent->d_name[0] == '.') + continue; + + dev = udev_device_new_from_id_filename(udev_enumerate->udev, dent->d_name); + if (dev == NULL) + continue; + + if (!match_subsystem(udev_enumerate, udev_device_get_subsystem(dev))) + goto nomatch; + if (!match_sysname(udev_enumerate, udev_device_get_sysname(dev))) + goto nomatch; + if (!match_parent(udev_enumerate, dev)) + goto nomatch; + if (!match_property(udev_enumerate, dev)) + goto nomatch; + if (!match_sysattr(udev_enumerate, dev)) + goto nomatch; + + syspath_add(udev_enumerate, udev_device_get_syspath(dev)); +nomatch: + udev_device_unref(dev); + } + closedir(dir); + } + return 0; +} + +static int parent_add_child(struct udev_enumerate *enumerate, const char *path) +{ + struct udev_device *dev; + + dev = udev_device_new_from_syspath(enumerate->udev, path); + if (dev == NULL) + return -ENODEV; + + if (!match_subsystem(enumerate, udev_device_get_subsystem(dev))) + return 0; + if (!match_sysname(enumerate, udev_device_get_sysname(dev))) + return 0; + if (!match_property(enumerate, dev)) + return 0; + if (!match_sysattr(enumerate, dev)) + return 0; + + syspath_add(enumerate, udev_device_get_syspath(dev)); + udev_device_unref(dev); + return 1; +} + +static int parent_crawl_children(struct udev_enumerate *enumerate, const char *path, int maxdepth) +{ + DIR *d; + struct dirent *dent; + + d = opendir(path); + if (d == NULL) + return -errno; + + for (dent = readdir(d); dent != NULL; dent = readdir(d)) { + char *child; + + if (dent->d_name[0] == '.') + continue; + if (dent->d_type != DT_DIR) + continue; + if (asprintf(&child, "%s/%s", path, dent->d_name) < 0) + continue; + parent_add_child(enumerate, child); + if (maxdepth > 0) + parent_crawl_children(enumerate, child, maxdepth-1); + free(child); + } + + closedir(d); + return 0; +} + +static int scan_devices_children(struct udev_enumerate *enumerate) +{ + const char *path; + + path = udev_device_get_syspath(enumerate->parent_match); + parent_add_child(enumerate, path); + return parent_crawl_children(enumerate, path, 256); +} + +static int scan_devices_all(struct udev_enumerate *udev_enumerate) +{ + struct udev *udev = udev_enumerate_get_udev(udev_enumerate); + char base[UTIL_PATH_SIZE]; + struct stat statbuf; + + util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/subsystem", NULL); + if (stat(base, &statbuf) == 0) { + /* we have /subsystem/, forget all the old stuff */ + scan_dir(udev_enumerate, "subsystem", "devices", NULL); + } else { + scan_dir(udev_enumerate, "bus", "devices", NULL); + scan_dir(udev_enumerate, "class", NULL, NULL); + } + return 0; +} + +/** + * udev_enumerate_scan_devices: + * @udev_enumerate: udev enumeration context + * + * Returns: 0 on success, otherwise a negative error value. + **/ +_public_ int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate) +{ + if (udev_enumerate == NULL) + return -EINVAL; + + /* efficiently lookup tags only, we maintain a reverse-index */ + if (udev_list_get_entry(&udev_enumerate->tags_match_list) != NULL) + return scan_devices_tags(udev_enumerate); + + /* walk the subtree of one parent device only */ + if (udev_enumerate->parent_match != NULL) + return scan_devices_children(udev_enumerate); + + /* scan devices of all subsystems */ + return scan_devices_all(udev_enumerate); +} + +/** + * udev_enumerate_scan_subsystems: + * @udev_enumerate: udev enumeration context + * + * Returns: 0 on success, otherwise a negative error value. + **/ +_public_ int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate) +{ + struct udev *udev = udev_enumerate_get_udev(udev_enumerate); + char base[UTIL_PATH_SIZE]; + struct stat statbuf; + const char *subsysdir; + + if (udev_enumerate == NULL) + return -EINVAL; + + /* all kernel modules */ + if (match_subsystem(udev_enumerate, "module")) + scan_dir_and_add_devices(udev_enumerate, "module", NULL, NULL); + + util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/subsystem", NULL); + if (stat(base, &statbuf) == 0) + subsysdir = "subsystem"; + else + subsysdir = "bus"; + + /* all subsystems (only buses support coldplug) */ + if (match_subsystem(udev_enumerate, "subsystem")) + scan_dir_and_add_devices(udev_enumerate, subsysdir, NULL, NULL); + + /* all subsystem drivers */ + if (match_subsystem(udev_enumerate, "drivers")) + scan_dir(udev_enumerate, subsysdir, "drivers", "drivers"); + return 0; +} diff --git a/src/libudev/libudev-list.c b/src/libudev/libudev-list.c new file mode 100644 index 0000000000..054c0a931c --- /dev/null +++ b/src/libudev/libudev-list.c @@ -0,0 +1,340 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +/** + * SECTION:libudev-list + * @short_description: list operation + * + * Libudev list operations. + */ + +/** + * udev_list_entry: + * + * Opaque object representing one entry in a list. An entry contains + * contains a name, and optionally a value. + */ +struct udev_list_entry { + struct udev_list_node node; + struct udev_list *list; + char *name; + char *value; + int num; +}; + +/* the list's head points to itself if empty */ +void udev_list_node_init(struct udev_list_node *list) +{ + list->next = list; + list->prev = list; +} + +int udev_list_node_is_empty(struct udev_list_node *list) +{ + return list->next == list; +} + +static void udev_list_node_insert_between(struct udev_list_node *new, + struct udev_list_node *prev, + struct udev_list_node *next) +{ + next->prev = new; + new->next = next; + new->prev = prev; + prev->next = new; +} + +void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list) +{ + udev_list_node_insert_between(new, list->prev, list); +} + +void udev_list_node_remove(struct udev_list_node *entry) +{ + struct udev_list_node *prev = entry->prev; + struct udev_list_node *next = entry->next; + + next->prev = prev; + prev->next = next; + + entry->prev = NULL; + entry->next = NULL; +} + +/* return list entry which embeds this node */ +static struct udev_list_entry *list_node_to_entry(struct udev_list_node *node) +{ + char *list; + + list = (char *)node; + list -= offsetof(struct udev_list_entry, node); + return (struct udev_list_entry *)list; +} + +void udev_list_init(struct udev *udev, struct udev_list *list, bool unique) +{ + memset(list, 0x00, sizeof(struct udev_list)); + list->udev = udev; + list->unique = unique; + udev_list_node_init(&list->node); +} + +/* insert entry into a list as the last element */ +void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list) +{ + /* inserting before the list head make the node the last node in the list */ + udev_list_node_insert_between(&new->node, list->node.prev, &list->node); + new->list = list; +} + +/* insert entry into a list, before a given existing entry */ +void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry) +{ + udev_list_node_insert_between(&new->node, entry->node.prev, &entry->node); + new->list = entry->list; +} + +/* binary search in sorted array */ +static int list_search(struct udev_list *list, const char *name) +{ + unsigned int first, last; + + first = 0; + last = list->entries_cur; + while (first < last) { + unsigned int i; + int cmp; + + i = (first + last)/2; + cmp = strcmp(name, list->entries[i]->name); + if (cmp < 0) + last = i; + else if (cmp > 0) + first = i+1; + else + return i; + } + + /* not found, return negative insertion-index+1 */ + return -(first+1); +} + +struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value) +{ + struct udev_list_entry *entry; + int i = 0; + + if (list->unique) { + /* lookup existing name or insertion-index */ + i = list_search(list, name); + if (i >= 0) { + entry = list->entries[i]; + + free(entry->value); + if (value == NULL) { + entry->value = NULL; + return entry; + } + entry->value = strdup(value); + if (entry->value == NULL) + return NULL; + return entry; + } + } + + /* add new name */ + entry = calloc(1, sizeof(struct udev_list_entry)); + if (entry == NULL) + return NULL; + entry->name = strdup(name); + if (entry->name == NULL) { + free(entry); + return NULL; + } + if (value != NULL) { + entry->value = strdup(value); + if (entry->value == NULL) { + free(entry->name); + free(entry); + return NULL; + } + } + + if (list->unique) { + /* allocate or enlarge sorted array if needed */ + if (list->entries_cur >= list->entries_max) { + unsigned int add; + + add = list->entries_max; + if (add < 1) + add = 64; + list->entries = realloc(list->entries, (list->entries_max + add) * sizeof(struct udev_list_entry *)); + if (list->entries == NULL) { + free(entry->name); + free(entry->value); + return NULL; + } + list->entries_max += add; + } + + /* the negative i returned the insertion index */ + i = (-i)-1; + + /* insert into sorted list */ + if ((unsigned int)i < list->entries_cur) + udev_list_entry_insert_before(entry, list->entries[i]); + else + udev_list_entry_append(entry, list); + + /* insert into sorted array */ + memmove(&list->entries[i+1], &list->entries[i], + (list->entries_cur - i) * sizeof(struct udev_list_entry *)); + list->entries[i] = entry; + list->entries_cur++; + } else { + udev_list_entry_append(entry, list); + } + + return entry; +} + +void udev_list_entry_delete(struct udev_list_entry *entry) +{ + if (entry->list->entries != NULL) { + int i; + struct udev_list *list = entry->list; + + /* remove entry from sorted array */ + i = list_search(list, entry->name); + if (i >= 0) { + memmove(&list->entries[i], &list->entries[i+1], + ((list->entries_cur-1) - i) * sizeof(struct udev_list_entry *)); + list->entries_cur--; + } + } + + udev_list_node_remove(&entry->node); + free(entry->name); + free(entry->value); + free(entry); +} + +void udev_list_cleanup(struct udev_list *list) +{ + struct udev_list_entry *entry_loop; + struct udev_list_entry *entry_tmp; + + free(list->entries); + list->entries = NULL; + list->entries_cur = 0; + list->entries_max = 0; + udev_list_entry_foreach_safe(entry_loop, entry_tmp, udev_list_get_entry(list)) + udev_list_entry_delete(entry_loop); +} + +struct udev_list_entry *udev_list_get_entry(struct udev_list *list) +{ + if (udev_list_node_is_empty(&list->node)) + return NULL; + return list_node_to_entry(list->node.next); +} + +/** + * udev_list_entry_get_next: + * @list_entry: current entry + * + * Returns: the next entry from the list, #NULL is no more entries are found. + */ +_public_ struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry) +{ + struct udev_list_node *next; + + if (list_entry == NULL) + return NULL; + next = list_entry->node.next; + /* empty list or no more entries */ + if (next == &list_entry->list->node) + return NULL; + return list_node_to_entry(next); +} + +/** + * udev_list_entry_get_by_name: + * @list_entry: current entry + * @name: name string to match + * + * Returns: the entry where @name matched, #NULL if no matching entry is found. + */ +_public_ struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name) +{ + int i; + + if (list_entry == NULL) + return NULL; + + if (!list_entry->list->unique) + return NULL; + + i = list_search(list_entry->list, name); + if (i < 0) + return NULL; + return list_entry->list->entries[i]; +} + +/** + * udev_list_entry_get_name: + * @list_entry: current entry + * + * Returns: the name string of this entry. + */ +_public_ const char *udev_list_entry_get_name(struct udev_list_entry *list_entry) +{ + if (list_entry == NULL) + return NULL; + return list_entry->name; +} + +/** + * udev_list_entry_get_value: + * @list_entry: current entry + * + * Returns: the value string of this entry. + */ +_public_ const char *udev_list_entry_get_value(struct udev_list_entry *list_entry) +{ + if (list_entry == NULL) + return NULL; + return list_entry->value; +} + +int udev_list_entry_get_num(struct udev_list_entry *list_entry) +{ + if (list_entry == NULL) + return -EINVAL; + return list_entry->num; +} + +void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num) +{ + if (list_entry == NULL) + return; + list_entry->num = num; +} diff --git a/src/libudev/libudev-monitor.c b/src/libudev/libudev-monitor.c new file mode 100644 index 0000000000..4406b55f97 --- /dev/null +++ b/src/libudev/libudev-monitor.c @@ -0,0 +1,782 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2010 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" +#include "socket-util.h" + +/** + * SECTION:libudev-monitor + * @short_description: device event source + * + * Connects to a device event source. + */ + +/** + * udev_monitor: + * + * Opaque object handling an event source. + */ +struct udev_monitor { + struct udev *udev; + int refcount; + int sock; + union sockaddr_union snl; + union sockaddr_union snl_trusted_sender; + union sockaddr_union snl_destination; + socklen_t addrlen; + struct udev_list filter_subsystem_list; + struct udev_list filter_tag_list; + bool bound; +}; + +enum udev_monitor_netlink_group { + UDEV_MONITOR_NONE, + UDEV_MONITOR_KERNEL, + UDEV_MONITOR_UDEV, +}; + +#define UDEV_MONITOR_MAGIC 0xfeedcafe +struct udev_monitor_netlink_header { + /* "libudev" prefix to distinguish libudev and kernel messages */ + char prefix[8]; + /* + * magic to protect against daemon <-> library message format mismatch + * used in the kernel from socket filter rules; needs to be stored in network order + */ + unsigned int magic; + /* total length of header structure known to the sender */ + unsigned int header_size; + /* properties string buffer */ + unsigned int properties_off; + unsigned int properties_len; + /* + * hashes of primary device properties strings, to let libudev subscribers + * use in-kernel socket filters; values need to be stored in network order + */ + unsigned int filter_subsystem_hash; + unsigned int filter_devtype_hash; + unsigned int filter_tag_bloom_hi; + unsigned int filter_tag_bloom_lo; +}; + +static struct udev_monitor *udev_monitor_new(struct udev *udev) +{ + struct udev_monitor *udev_monitor; + + udev_monitor = calloc(1, sizeof(struct udev_monitor)); + if (udev_monitor == NULL) + return NULL; + udev_monitor->refcount = 1; + udev_monitor->udev = udev; + udev_list_init(udev, &udev_monitor->filter_subsystem_list, false); + udev_list_init(udev, &udev_monitor->filter_tag_list, true); + return udev_monitor; +} + +/** + * udev_monitor_new_from_socket: + * @udev: udev library context + * @socket_path: unix socket path + * + * This function is removed from libudev and will not do anything. + * + * Returns: #NULL + **/ +_public_ struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path) +{ + errno = ENOSYS; + return NULL; +} + +struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd) +{ + struct udev_monitor *udev_monitor; + unsigned int group; + + if (udev == NULL) + return NULL; + + if (name == NULL) + group = UDEV_MONITOR_NONE; + else if (strcmp(name, "udev") == 0) + group = UDEV_MONITOR_UDEV; + else if (strcmp(name, "kernel") == 0) + group = UDEV_MONITOR_KERNEL; + else + return NULL; + + udev_monitor = udev_monitor_new(udev); + if (udev_monitor == NULL) + return NULL; + + if (fd < 0) { + udev_monitor->sock = socket(PF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, NETLINK_KOBJECT_UEVENT); + if (udev_monitor->sock == -1) { + err(udev, "error getting socket: %m\n"); + free(udev_monitor); + return NULL; + } + } else { + udev_monitor->bound = true; + udev_monitor->sock = fd; + } + + udev_monitor->snl.nl.nl_family = AF_NETLINK; + udev_monitor->snl.nl.nl_groups = group; + + /* default destination for sending */ + udev_monitor->snl_destination.nl.nl_family = AF_NETLINK; + udev_monitor->snl_destination.nl.nl_groups = UDEV_MONITOR_UDEV; + + return udev_monitor; +} + +/** + * udev_monitor_new_from_netlink: + * @udev: udev library context + * @name: name of event source + * + * Create new udev monitor and connect to a specified event + * source. Valid sources identifiers are "udev" and "kernel". + * + * Applications should usually not connect directly to the + * "kernel" events, because the devices might not be useable + * at that time, before udev has configured them, and created + * device nodes. Accessing devices at the same time as udev, + * might result in unpredictable behavior. The "udev" events + * are sent out after udev has finished its event processing, + * all rules have been processed, and needed device nodes are + * created. + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev monitor. + * + * Returns: a new udev monitor, or #NULL, in case of an error + **/ +_public_ struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name) +{ + return udev_monitor_new_from_netlink_fd(udev, name, -1); +} + +static inline void bpf_stmt(struct sock_filter *inss, unsigned int *i, + unsigned short code, unsigned int data) +{ + struct sock_filter *ins = &inss[*i]; + + ins->code = code; + ins->k = data; + (*i)++; +} + +static inline void bpf_jmp(struct sock_filter *inss, unsigned int *i, + unsigned short code, unsigned int data, + unsigned short jt, unsigned short jf) +{ + struct sock_filter *ins = &inss[*i]; + + ins->code = code; + ins->jt = jt; + ins->jf = jf; + ins->k = data; + (*i)++; +} + +/** + * udev_monitor_filter_update: + * @udev_monitor: monitor + * + * Update the installed socket filter. This is only needed, + * if the filter was removed or changed. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_monitor_filter_update(struct udev_monitor *udev_monitor) +{ + struct sock_filter ins[512]; + struct sock_fprog filter; + unsigned int i; + struct udev_list_entry *list_entry; + int err; + + if (udev_list_get_entry(&udev_monitor->filter_subsystem_list) == NULL && + udev_list_get_entry(&udev_monitor->filter_tag_list) == NULL) + return 0; + + memset(ins, 0x00, sizeof(ins)); + i = 0; + + /* load magic in A */ + bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, magic)); + /* jump if magic matches */ + bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, UDEV_MONITOR_MAGIC, 1, 0); + /* wrong magic, pass packet */ + bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff); + + if (udev_list_get_entry(&udev_monitor->filter_tag_list) != NULL) { + int tag_matches; + + /* count tag matches, to calculate end of tag match block */ + tag_matches = 0; + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_tag_list)) + tag_matches++; + + /* add all tags matches */ + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_tag_list)) { + uint64_t tag_bloom_bits = util_string_bloom64(udev_list_entry_get_name(list_entry)); + uint32_t tag_bloom_hi = tag_bloom_bits >> 32; + uint32_t tag_bloom_lo = tag_bloom_bits & 0xffffffff; + + /* load device bloom bits in A */ + bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_tag_bloom_hi)); + /* clear bits (tag bits & bloom bits) */ + bpf_stmt(ins, &i, BPF_ALU|BPF_AND|BPF_K, tag_bloom_hi); + /* jump to next tag if it does not match */ + bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, tag_bloom_hi, 0, 3); + + /* load device bloom bits in A */ + bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_tag_bloom_lo)); + /* clear bits (tag bits & bloom bits) */ + bpf_stmt(ins, &i, BPF_ALU|BPF_AND|BPF_K, tag_bloom_lo); + /* jump behind end of tag match block if tag matches */ + tag_matches--; + bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, tag_bloom_lo, 1 + (tag_matches * 6), 0); + } + + /* nothing matched, drop packet */ + bpf_stmt(ins, &i, BPF_RET|BPF_K, 0); + } + + /* add all subsystem matches */ + if (udev_list_get_entry(&udev_monitor->filter_subsystem_list) != NULL) { + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_subsystem_list)) { + unsigned int hash = util_string_hash32(udev_list_entry_get_name(list_entry)); + + /* load device subsystem value in A */ + bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_subsystem_hash)); + if (udev_list_entry_get_value(list_entry) == NULL) { + /* jump if subsystem does not match */ + bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, hash, 0, 1); + } else { + /* jump if subsystem does not match */ + bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, hash, 0, 3); + + /* load device devtype value in A */ + bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_devtype_hash)); + /* jump if value does not match */ + hash = util_string_hash32(udev_list_entry_get_value(list_entry)); + bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, hash, 0, 1); + } + + /* matched, pass packet */ + bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff); + + if (i+1 >= ARRAY_SIZE(ins)) + return -1; + } + + /* nothing matched, drop packet */ + bpf_stmt(ins, &i, BPF_RET|BPF_K, 0); + } + + /* matched, pass packet */ + bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff); + + /* install filter */ + memset(&filter, 0x00, sizeof(filter)); + filter.len = i; + filter.filter = ins; + err = setsockopt(udev_monitor->sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)); + return err; +} + +int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender) +{ + udev_monitor->snl_trusted_sender.nl.nl_pid = sender->snl.nl.nl_pid; + return 0; +} +/** + * udev_monitor_enable_receiving: + * @udev_monitor: the monitor which should receive events + * + * Binds the @udev_monitor socket to the event source. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor) +{ + int err = 0; + const int on = 1; + + if (udev_monitor->snl.nl.nl_family == 0) + return -EINVAL; + + udev_monitor_filter_update(udev_monitor); + + if (!udev_monitor->bound) { + err = bind(udev_monitor->sock, + &udev_monitor->snl.sa, sizeof(struct sockaddr_nl)); + if (err == 0) + udev_monitor->bound = true; + } + + if (err >= 0) { + union sockaddr_union snl; + socklen_t addrlen; + + /* + * get the address the kernel has assigned us + * it is usually, but not necessarily the pid + */ + addrlen = sizeof(struct sockaddr_nl); + err = getsockname(udev_monitor->sock, &snl.sa, &addrlen); + if (err == 0) + udev_monitor->snl.nl.nl_pid = snl.nl.nl_pid; + } else { + err(udev_monitor->udev, "bind failed: %m\n"); + return err; + } + + /* enable receiving of sender credentials */ + setsockopt(udev_monitor->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)); + return 0; +} + +/** + * udev_monitor_set_receive_buffer_size: + * @udev_monitor: the monitor which should receive events + * @size: the size in bytes + * + * Set the size of the kernel socket buffer. This call needs the + * appropriate privileges to succeed. + * + * Returns: 0 on success, otherwise -1 on error. + */ +_public_ int udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_monitor, int size) +{ + if (udev_monitor == NULL) + return -1; + return setsockopt(udev_monitor->sock, SOL_SOCKET, SO_RCVBUFFORCE, &size, sizeof(size)); +} + +int udev_monitor_disconnect(struct udev_monitor *udev_monitor) +{ + int err; + + err = close(udev_monitor->sock); + udev_monitor->sock = -1; + return err; +} + +/** + * udev_monitor_ref: + * @udev_monitor: udev monitor + * + * Take a reference of a udev monitor. + * + * Returns: the passed udev monitor + **/ +_public_ struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor) +{ + if (udev_monitor == NULL) + return NULL; + udev_monitor->refcount++; + return udev_monitor; +} + +/** + * udev_monitor_unref: + * @udev_monitor: udev monitor + * + * Drop a reference of a udev monitor. If the refcount reaches zero, + * the bound socket will be closed, and the resources of the monitor + * will be released. + * + **/ +_public_ void udev_monitor_unref(struct udev_monitor *udev_monitor) +{ + if (udev_monitor == NULL) + return; + udev_monitor->refcount--; + if (udev_monitor->refcount > 0) + return; + if (udev_monitor->sock >= 0) + close(udev_monitor->sock); + udev_list_cleanup(&udev_monitor->filter_subsystem_list); + udev_list_cleanup(&udev_monitor->filter_tag_list); + free(udev_monitor); +} + +/** + * udev_monitor_get_udev: + * @udev_monitor: udev monitor + * + * Retrieve the udev library context the monitor was created with. + * + * Returns: the udev library context + **/ +_public_ struct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor) +{ + if (udev_monitor == NULL) + return NULL; + return udev_monitor->udev; +} + +/** + * udev_monitor_get_fd: + * @udev_monitor: udev monitor + * + * Retrieve the socket file descriptor associated with the monitor. + * + * Returns: the socket file descriptor + **/ +_public_ int udev_monitor_get_fd(struct udev_monitor *udev_monitor) +{ + if (udev_monitor == NULL) + return -1; + return udev_monitor->sock; +} + +static int passes_filter(struct udev_monitor *udev_monitor, struct udev_device *udev_device) +{ + struct udev_list_entry *list_entry; + + if (udev_list_get_entry(&udev_monitor->filter_subsystem_list) == NULL) + goto tag; + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_subsystem_list)) { + const char *subsys = udev_list_entry_get_name(list_entry); + const char *dsubsys = udev_device_get_subsystem(udev_device); + const char *devtype; + const char *ddevtype; + + if (strcmp(dsubsys, subsys) != 0) + continue; + + devtype = udev_list_entry_get_value(list_entry); + if (devtype == NULL) + goto tag; + ddevtype = udev_device_get_devtype(udev_device); + if (ddevtype == NULL) + continue; + if (strcmp(ddevtype, devtype) == 0) + goto tag; + } + return 0; + +tag: + if (udev_list_get_entry(&udev_monitor->filter_tag_list) == NULL) + return 1; + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_tag_list)) { + const char *tag = udev_list_entry_get_name(list_entry); + + if (udev_device_has_tag(udev_device, tag)) + return 1; + } + return 0; +} + +/** + * udev_monitor_receive_device: + * @udev_monitor: udev monitor + * + * Receive data from the udev monitor socket, allocate a new udev + * device, fill in the received data, and return the device. + * + * Only socket connections with uid=0 are accepted. + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev device. + * + * Returns: a new udev device, or #NULL, in case of an error + **/ +_public_ struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor) +{ + struct udev_device *udev_device; + struct msghdr smsg; + struct iovec iov; + char cred_msg[CMSG_SPACE(sizeof(struct ucred))]; + struct cmsghdr *cmsg; + union sockaddr_union snl; + struct ucred *cred; + char buf[8192]; + ssize_t buflen; + ssize_t bufpos; + struct udev_monitor_netlink_header *nlh; + +retry: + if (udev_monitor == NULL) + return NULL; + iov.iov_base = &buf; + iov.iov_len = sizeof(buf); + memset (&smsg, 0x00, sizeof(struct msghdr)); + smsg.msg_iov = &iov; + smsg.msg_iovlen = 1; + smsg.msg_control = cred_msg; + smsg.msg_controllen = sizeof(cred_msg); + + if (udev_monitor->snl.nl.nl_family != 0) { + smsg.msg_name = &snl; + smsg.msg_namelen = sizeof(snl); + } + + buflen = recvmsg(udev_monitor->sock, &smsg, 0); + if (buflen < 0) { + if (errno != EINTR) + dbg(udev_monitor->udev, "unable to receive message\n"); + return NULL; + } + + if (buflen < 32 || (size_t)buflen >= sizeof(buf)) { + dbg(udev_monitor->udev, "invalid message length\n"); + return NULL; + } + + if (udev_monitor->snl.nl.nl_family != 0) { + if (snl.nl.nl_groups == 0) { + /* unicast message, check if we trust the sender */ + if (udev_monitor->snl_trusted_sender.nl.nl_pid == 0 || + snl.nl.nl_pid != udev_monitor->snl_trusted_sender.nl.nl_pid) { + dbg(udev_monitor->udev, "unicast netlink message ignored\n"); + return NULL; + } + } else if (snl.nl.nl_groups == UDEV_MONITOR_KERNEL) { + if (snl.nl.nl_pid > 0) { + dbg(udev_monitor->udev, "multicast kernel netlink message from pid %d ignored\n", + snl.nl.nl_pid); + return NULL; + } + } + } + + cmsg = CMSG_FIRSTHDR(&smsg); + if (cmsg == NULL || cmsg->cmsg_type != SCM_CREDENTIALS) { + dbg(udev_monitor->udev, "no sender credentials received, message ignored\n"); + return NULL; + } + + cred = (struct ucred *)CMSG_DATA(cmsg); + if (cred->uid != 0) { + dbg(udev_monitor->udev, "sender uid=%d, message ignored\n", cred->uid); + return NULL; + } + + if (memcmp(buf, "libudev", 8) == 0) { + /* udev message needs proper version magic */ + nlh = (struct udev_monitor_netlink_header *) buf; + if (nlh->magic != htonl(UDEV_MONITOR_MAGIC)) { + err(udev_monitor->udev, "unrecognized message signature (%x != %x)\n", + nlh->magic, htonl(UDEV_MONITOR_MAGIC)); + return NULL; + } + if (nlh->properties_off+32 > buflen) + return NULL; + bufpos = nlh->properties_off; + } else { + /* kernel message with header */ + bufpos = strlen(buf) + 1; + if ((size_t)bufpos < sizeof("a@/d") || bufpos >= buflen) { + dbg(udev_monitor->udev, "invalid message length\n"); + return NULL; + } + + /* check message header */ + if (strstr(buf, "@/") == NULL) { + dbg(udev_monitor->udev, "unrecognized message header\n"); + return NULL; + } + } + + udev_device = udev_device_new(udev_monitor->udev); + if (udev_device == NULL) + return NULL; + udev_device_set_info_loaded(udev_device); + + while (bufpos < buflen) { + char *key; + size_t keylen; + + key = &buf[bufpos]; + keylen = strlen(key); + if (keylen == 0) + break; + bufpos += keylen + 1; + udev_device_add_property_from_string_parse(udev_device, key); + } + + if (udev_device_add_property_from_string_parse_finish(udev_device) < 0) { + dbg(udev_monitor->udev, "missing values, invalid device\n"); + udev_device_unref(udev_device); + return NULL; + } + + /* skip device, if it does not pass the current filter */ + if (!passes_filter(udev_monitor, udev_device)) { + struct pollfd pfd[1]; + int rc; + + udev_device_unref(udev_device); + + /* if something is queued, get next device */ + pfd[0].fd = udev_monitor->sock; + pfd[0].events = POLLIN; + rc = poll(pfd, 1, 0); + if (rc > 0) + goto retry; + return NULL; + } + + return udev_device; +} + +int udev_monitor_send_device(struct udev_monitor *udev_monitor, + struct udev_monitor *destination, struct udev_device *udev_device) +{ + const char *buf; + ssize_t blen; + ssize_t count; + struct msghdr smsg; + struct iovec iov[2]; + const char *val; + struct udev_monitor_netlink_header nlh; + struct udev_list_entry *list_entry; + uint64_t tag_bloom_bits; + + if (udev_monitor->snl.nl.nl_family == 0) + return -EINVAL; + + blen = udev_device_get_properties_monitor_buf(udev_device, &buf); + if (blen < 32) + return -EINVAL; + + /* add versioned header */ + memset(&nlh, 0x00, sizeof(struct udev_monitor_netlink_header)); + memcpy(nlh.prefix, "libudev", 8); + nlh.magic = htonl(UDEV_MONITOR_MAGIC); + nlh.header_size = sizeof(struct udev_monitor_netlink_header); + val = udev_device_get_subsystem(udev_device); + nlh.filter_subsystem_hash = htonl(util_string_hash32(val)); + val = udev_device_get_devtype(udev_device); + if (val != NULL) + nlh.filter_devtype_hash = htonl(util_string_hash32(val)); + iov[0].iov_base = &nlh; + iov[0].iov_len = sizeof(struct udev_monitor_netlink_header); + + /* add tag bloom filter */ + tag_bloom_bits = 0; + udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device)) + tag_bloom_bits |= util_string_bloom64(udev_list_entry_get_name(list_entry)); + if (tag_bloom_bits > 0) { + nlh.filter_tag_bloom_hi = htonl(tag_bloom_bits >> 32); + nlh.filter_tag_bloom_lo = htonl(tag_bloom_bits & 0xffffffff); + } + + /* add properties list */ + nlh.properties_off = iov[0].iov_len; + nlh.properties_len = blen; + iov[1].iov_base = (char *)buf; + iov[1].iov_len = blen; + + memset(&smsg, 0x00, sizeof(struct msghdr)); + smsg.msg_iov = iov; + smsg.msg_iovlen = 2; + /* + * Use custom address for target, or the default one. + * + * If we send to a multicast group, we will get + * ECONNREFUSED, which is expected. + */ + if (destination != NULL) + smsg.msg_name = &destination->snl; + else + smsg.msg_name = &udev_monitor->snl_destination; + smsg.msg_namelen = sizeof(struct sockaddr_nl); + count = sendmsg(udev_monitor->sock, &smsg, 0); + dbg(udev_monitor->udev, "passed %zi bytes to netlink monitor %p\n", count, udev_monitor); + return count; +} + +/** + * udev_monitor_filter_add_match_subsystem_devtype: + * @udev_monitor: the monitor + * @subsystem: the subsystem value to match the incoming devices against + * @devtype: the devtype value to match the incoming devices against + * + * This filter is efficiently executed inside the kernel, and libudev subscribers + * will usually not be woken up for devices which do not match. + * + * The filter must be installed before the monitor is switched to listening mode. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, const char *subsystem, const char *devtype) +{ + if (udev_monitor == NULL) + return -EINVAL; + if (subsystem == NULL) + return -EINVAL; + if (udev_list_entry_add(&udev_monitor->filter_subsystem_list, subsystem, devtype) == NULL) + return -ENOMEM; + return 0; +} + +/** + * udev_monitor_filter_add_match_tag: + * @udev_monitor: the monitor + * @tag: the name of a tag + * + * This filter is efficiently executed inside the kernel, and libudev subscribers + * will usually not be woken up for devices which do not match. + * + * The filter must be installed before the monitor is switched to listening mode. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_monitor_filter_add_match_tag(struct udev_monitor *udev_monitor, const char *tag) +{ + if (udev_monitor == NULL) + return -EINVAL; + if (tag == NULL) + return -EINVAL; + if (udev_list_entry_add(&udev_monitor->filter_tag_list, tag, NULL) == NULL) + return -ENOMEM; + return 0; +} + +/** + * udev_monitor_filter_remove: + * @udev_monitor: monitor + * + * Remove all filters from monitor. + * + * Returns: 0 on success, otherwise a negative error value. + */ +_public_ int udev_monitor_filter_remove(struct udev_monitor *udev_monitor) +{ + static struct sock_fprog filter = { 0, NULL }; + + udev_list_cleanup(&udev_monitor->filter_subsystem_list); + return setsockopt(udev_monitor->sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)); +} diff --git a/src/libudev/libudev-private.h b/src/libudev/libudev-private.h new file mode 100644 index 0000000000..d914aa4599 --- /dev/null +++ b/src/libudev/libudev-private.h @@ -0,0 +1,190 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2012 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#ifndef _LIBUDEV_PRIVATE_H_ +#define _LIBUDEV_PRIVATE_H_ + +#include +#include +#include +#include +#include "macro.h" +#include "libudev.h" + +#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) +#define READ_END 0 +#define WRITE_END 1 + +/* avoid (sometimes expensive) calculations of parameters for debug output */ +#define udev_log_cond(udev, prio, arg...) \ + do { \ + if (udev_get_log_priority(udev) >= prio) \ + udev_log(udev, prio, __FILE__, __LINE__, __FUNCTION__, ## arg); \ + } while (0) + +#define dbg(udev, arg...) udev_log_cond(udev, LOG_DEBUG, ## arg) +#define info(udev, arg...) udev_log_cond(udev, LOG_INFO, ## arg) +#define err(udev, arg...) udev_log_cond(udev, LOG_ERR, ## arg) + +/* libudev.c */ +void udev_log(struct udev *udev, + int priority, const char *file, int line, const char *fn, + const char *format, ...) + __attribute__((format(printf, 6, 7))); +int udev_get_rules_path(struct udev *udev, char **path[], unsigned long long *ts_usec[]); +struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value); +struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev); + +/* libudev-device.c */ +struct udev_device *udev_device_new(struct udev *udev); +struct udev_device *udev_device_new_from_id_filename(struct udev *udev, char *id); +mode_t udev_device_get_devnode_mode(struct udev_device *udev_device); +int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath); +int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode); +int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink, int unique); +void udev_device_cleanup_devlinks_list(struct udev_device *udev_device); +struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value); +void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property); +int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device); +char **udev_device_get_properties_envp(struct udev_device *udev_device); +ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf); +int udev_device_read_db(struct udev_device *udev_device, const char *dbfile); +int udev_device_read_uevent_file(struct udev_device *udev_device); +int udev_device_set_action(struct udev_device *udev_device, const char *action); +const char *udev_device_get_devpath_old(struct udev_device *udev_device); +const char *udev_device_get_id_filename(struct udev_device *udev_device); +void udev_device_set_is_initialized(struct udev_device *udev_device); +int udev_device_add_tag(struct udev_device *udev_device, const char *tag); +void udev_device_cleanup_tags_list(struct udev_device *udev_device); +unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device); +void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized); +int udev_device_get_devlink_priority(struct udev_device *udev_device); +int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio); +int udev_device_get_watch_handle(struct udev_device *udev_device); +int udev_device_set_watch_handle(struct udev_device *udev_device, int handle); +int udev_device_get_ifindex(struct udev_device *udev_device); +void udev_device_set_info_loaded(struct udev_device *device); +bool udev_device_get_db_persist(struct udev_device *udev_device); +void udev_device_set_db_persist(struct udev_device *udev_device); + +/* libudev-device-private.c */ +int udev_device_update_db(struct udev_device *udev_device); +int udev_device_delete_db(struct udev_device *udev_device); +int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add); + +/* libudev-monitor.c - netlink/unix socket communication */ +int udev_monitor_disconnect(struct udev_monitor *udev_monitor); +int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender); +int udev_monitor_send_device(struct udev_monitor *udev_monitor, + struct udev_monitor *destination, struct udev_device *udev_device); +struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd); + +/* libudev-list.c */ +struct udev_list_node { + struct udev_list_node *next, *prev; +}; +struct udev_list { + struct udev *udev; + struct udev_list_node node; + struct udev_list_entry **entries; + unsigned int entries_cur; + unsigned int entries_max; + bool unique; +}; +#define UDEV_LIST(list) struct udev_list_node list = { &(list), &(list) } +void udev_list_node_init(struct udev_list_node *list); +int udev_list_node_is_empty(struct udev_list_node *list); +void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list); +void udev_list_node_remove(struct udev_list_node *entry); +#define udev_list_node_foreach(node, list) \ + for (node = (list)->next; \ + node != list; \ + node = (node)->next) +#define udev_list_node_foreach_safe(node, tmp, list) \ + for (node = (list)->next, tmp = (node)->next; \ + node != list; \ + node = tmp, tmp = (tmp)->next) +void udev_list_init(struct udev *udev, struct udev_list *list, bool unique); +void udev_list_cleanup(struct udev_list *list); +struct udev_list_entry *udev_list_get_entry(struct udev_list *list); +struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value); +void udev_list_entry_delete(struct udev_list_entry *entry); +void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry); +void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list); +int udev_list_entry_get_num(struct udev_list_entry *list_entry); +void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num); +#define udev_list_entry_foreach_safe(entry, tmp, first) \ + for (entry = first, tmp = udev_list_entry_get_next(entry); \ + entry != NULL; \ + entry = tmp, tmp = udev_list_entry_get_next(tmp)) + +/* libudev-queue.c */ +unsigned long long int udev_get_kernel_seqnum(struct udev *udev); +int udev_queue_read_seqnum(FILE *queue_file, unsigned long long int *seqnum); +ssize_t udev_queue_read_devpath(FILE *queue_file, char *devpath, size_t size); +ssize_t udev_queue_skip_devpath(FILE *queue_file); + +/* libudev-queue-private.c */ +struct udev_queue_export *udev_queue_export_new(struct udev *udev); +struct udev_queue_export *udev_queue_export_unref(struct udev_queue_export *udev_queue_export); +void udev_queue_export_cleanup(struct udev_queue_export *udev_queue_export); +int udev_queue_export_device_queued(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device); +int udev_queue_export_device_finished(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device); + +/* libudev-util.c */ +#define UTIL_PATH_SIZE 1024 +#define UTIL_NAME_SIZE 512 +#define UTIL_LINE_SIZE 16384 +#define UDEV_ALLOWED_CHARS_INPUT "/ $%?," +ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const char *syspath, char *value, size_t size); +int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size); +int util_log_priority(const char *priority); +size_t util_path_encode(const char *src, char *dest, size_t size); +size_t util_path_decode(char *s); +void util_remove_trailing_chars(char *path, char c); +size_t util_strpcpy(char **dest, size_t size, const char *src); +size_t util_strpcpyl(char **dest, size_t size, const char *src, ...) __attribute__((sentinel)); +size_t util_strscpy(char *dest, size_t size, const char *src); +size_t util_strscpyl(char *dest, size_t size, const char *src, ...) __attribute__((sentinel)); +int util_replace_whitespace(const char *str, char *to, size_t len); +int util_replace_chars(char *str, const char *white); +unsigned int util_string_hash32(const char *key); +uint64_t util_string_bloom64(const char *str); + +/* libudev-util-private.c */ +int util_create_path(struct udev *udev, const char *path); +int util_create_path_selinux(struct udev *udev, const char *path); +int util_delete_path(struct udev *udev, const char *path); +uid_t util_lookup_user(struct udev *udev, const char *user); +gid_t util_lookup_group(struct udev *udev, const char *group); +int util_resolve_subsys_kernel(struct udev *udev, const char *string, + char *result, size_t maxsize, int read_value); +unsigned long long ts_usec(const struct timespec *ts); +unsigned long long now_usec(void); + +/* libudev-selinux-private.c */ +#ifndef HAVE_SELINUX +static inline void udev_selinux_init(struct udev *udev) {} +static inline void udev_selinux_exit(struct udev *udev) {} +static inline void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode) {} +static inline void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode) {} +static inline void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode) {} +static inline void udev_selinux_resetfscreatecon(struct udev *udev) {} +#else +void udev_selinux_init(struct udev *udev); +void udev_selinux_exit(struct udev *udev); +void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode); +void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode); +void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode); +void udev_selinux_resetfscreatecon(struct udev *udev); +#endif + +#endif diff --git a/src/libudev/libudev-queue-private.c b/src/libudev/libudev-queue-private.c new file mode 100644 index 0000000000..ca6d229a2c --- /dev/null +++ b/src/libudev/libudev-queue-private.c @@ -0,0 +1,406 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008 Kay Sievers + * Copyright (C) 2009 Alan Jenkins + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +/* + * DISCLAIMER - The file format mentioned here is private to udev/libudev, + * and may be changed without notice. + * + * The udev event queue is exported as a binary log file. + * Each log record consists of a sequence number followed by the device path. + * + * When a new event is queued, its details are appended to the log. + * When the event finishes, a second record is appended to the log + * with the same sequence number but a devpath len of 0. + * + * Example: + * { 0x0000000000000001 } + * { 0x0000000000000001, 0x0019, "/devices/virtual/mem/null" }, + * { 0x0000000000000002, 0x001b, "/devices/virtual/mem/random" }, + * { 0x0000000000000001, 0x0000 }, + * { 0x0000000000000003, 0x0019, "/devices/virtual/mem/zero" }, + * + * Events 2 and 3 are still queued, but event 1 has finished. + * + * The queue does not grow indefinitely. It is periodically re-created + * to remove finished events. Atomic rename() makes this transparent to readers. + * + * The queue file starts with a single sequence number which specifies the + * minimum sequence number in the log that follows. Any events prior to this + * sequence number have already finished. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +static int rebuild_queue_file(struct udev_queue_export *udev_queue_export); + +struct udev_queue_export { + struct udev *udev; + int queued_count; /* number of unfinished events exported in queue file */ + FILE *queue_file; + unsigned long long int seqnum_max; /* earliest sequence number in queue file */ + unsigned long long int seqnum_min; /* latest sequence number in queue file */ + int waste_bytes; /* queue file bytes wasted on finished events */ +}; + +struct udev_queue_export *udev_queue_export_new(struct udev *udev) +{ + struct udev_queue_export *udev_queue_export; + unsigned long long int initial_seqnum; + + if (udev == NULL) + return NULL; + + udev_queue_export = calloc(1, sizeof(struct udev_queue_export)); + if (udev_queue_export == NULL) + return NULL; + udev_queue_export->udev = udev; + + initial_seqnum = udev_get_kernel_seqnum(udev); + udev_queue_export->seqnum_min = initial_seqnum; + udev_queue_export->seqnum_max = initial_seqnum; + + udev_queue_export_cleanup(udev_queue_export); + if (rebuild_queue_file(udev_queue_export) != 0) { + free(udev_queue_export); + return NULL; + } + + return udev_queue_export; +} + +struct udev_queue_export *udev_queue_export_unref(struct udev_queue_export *udev_queue_export) +{ + if (udev_queue_export == NULL) + return NULL; + if (udev_queue_export->queue_file != NULL) + fclose(udev_queue_export->queue_file); + free(udev_queue_export); + return NULL; +} + +void udev_queue_export_cleanup(struct udev_queue_export *udev_queue_export) +{ + char filename[UTIL_PATH_SIZE]; + + if (udev_queue_export == NULL) + return; + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.tmp", NULL); + unlink(filename); + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.bin", NULL); + unlink(filename); +} + +static int skip_to(FILE *file, long offset) +{ + long old_offset; + + /* fseek may drop buffered data, avoid it for small seeks */ + old_offset = ftell(file); + if (offset > old_offset && offset - old_offset <= BUFSIZ) { + size_t skip_bytes = offset - old_offset; + char *buf = alloca(skip_bytes); + + if (fread(buf, skip_bytes, 1, file) != skip_bytes) + return -1; + } + + return fseek(file, offset, SEEK_SET); +} + +struct queue_devpaths { + unsigned int devpaths_first; /* index of first queued event */ + unsigned int devpaths_size; + long devpaths[]; /* seqnum -> offset of devpath in queue file (or 0) */ +}; + +/* + * Returns a table mapping seqnum to devpath file offset for currently queued events. + * devpaths[i] represents the event with seqnum = i + udev_queue_export->seqnum_min. + */ +static struct queue_devpaths *build_index(struct udev_queue_export *udev_queue_export) +{ + struct queue_devpaths *devpaths; + unsigned long long int range; + long devpath_offset; + ssize_t devpath_len; + unsigned long long int seqnum; + unsigned long long int n; + unsigned int i; + + /* seek to the first event in the file */ + rewind(udev_queue_export->queue_file); + udev_queue_read_seqnum(udev_queue_export->queue_file, &seqnum); + + /* allocate the table */ + range = udev_queue_export->seqnum_min - udev_queue_export->seqnum_max; + if (range - 1 > INT_MAX) { + err(udev_queue_export->udev, "queue file overflow\n"); + return NULL; + } + devpaths = calloc(1, sizeof(struct queue_devpaths) + (range + 1) * sizeof(long)); + if (devpaths == NULL) + return NULL; + devpaths->devpaths_size = range + 1; + + /* read all records and populate the table */ + for (;;) { + if (udev_queue_read_seqnum(udev_queue_export->queue_file, &seqnum) < 0) + break; + n = seqnum - udev_queue_export->seqnum_max; + if (n >= devpaths->devpaths_size) + goto read_error; + + devpath_offset = ftell(udev_queue_export->queue_file); + devpath_len = udev_queue_skip_devpath(udev_queue_export->queue_file); + if (devpath_len < 0) + goto read_error; + + if (devpath_len > 0) + devpaths->devpaths[n] = devpath_offset; + else + devpaths->devpaths[n] = 0; + } + + /* find first queued event */ + for (i = 0; i < devpaths->devpaths_size; i++) { + if (devpaths->devpaths[i] != 0) + break; + } + devpaths->devpaths_first = i; + + return devpaths; + +read_error: + err(udev_queue_export->udev, "queue file corrupted\n"); + free(devpaths); + return NULL; +} + +static int rebuild_queue_file(struct udev_queue_export *udev_queue_export) +{ + unsigned long long int seqnum; + struct queue_devpaths *devpaths = NULL; + char filename[UTIL_PATH_SIZE]; + char filename_tmp[UTIL_PATH_SIZE]; + FILE *new_queue_file = NULL; + unsigned int i; + + /* read old queue file */ + if (udev_queue_export->queue_file != NULL) { + devpaths = build_index(udev_queue_export); + if (devpaths != NULL) + udev_queue_export->seqnum_max += devpaths->devpaths_first; + } + if (devpaths == NULL) { + udev_queue_export->queued_count = 0; + udev_queue_export->seqnum_max = udev_queue_export->seqnum_min; + } + + /* create new queue file */ + util_strscpyl(filename_tmp, sizeof(filename_tmp), udev_get_run_path(udev_queue_export->udev), "/queue.tmp", NULL); + new_queue_file = fopen(filename_tmp, "w+"); + if (new_queue_file == NULL) + goto error; + seqnum = udev_queue_export->seqnum_max; + fwrite(&seqnum, 1, sizeof(unsigned long long int), new_queue_file); + + /* copy unfinished events only to the new file */ + if (devpaths != NULL) { + for (i = devpaths->devpaths_first; i < devpaths->devpaths_size; i++) { + char devpath[UTIL_PATH_SIZE]; + int err; + unsigned short devpath_len; + + if (devpaths->devpaths[i] != 0) + { + skip_to(udev_queue_export->queue_file, devpaths->devpaths[i]); + err = udev_queue_read_devpath(udev_queue_export->queue_file, devpath, sizeof(devpath)); + devpath_len = err; + + fwrite(&seqnum, sizeof(unsigned long long int), 1, new_queue_file); + fwrite(&devpath_len, sizeof(unsigned short), 1, new_queue_file); + fwrite(devpath, 1, devpath_len, new_queue_file); + } + seqnum++; + } + free(devpaths); + devpaths = NULL; + } + fflush(new_queue_file); + if (ferror(new_queue_file)) + goto error; + + /* rename the new file on top of the old one */ + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.bin", NULL); + if (rename(filename_tmp, filename) != 0) + goto error; + + if (udev_queue_export->queue_file != NULL) + fclose(udev_queue_export->queue_file); + udev_queue_export->queue_file = new_queue_file; + udev_queue_export->waste_bytes = 0; + + return 0; + +error: + err(udev_queue_export->udev, "failed to create queue file: %m\n"); + udev_queue_export_cleanup(udev_queue_export); + + if (udev_queue_export->queue_file != NULL) { + fclose(udev_queue_export->queue_file); + udev_queue_export->queue_file = NULL; + } + if (new_queue_file != NULL) + fclose(new_queue_file); + + if (devpaths != NULL) + free(devpaths); + udev_queue_export->queued_count = 0; + udev_queue_export->waste_bytes = 0; + udev_queue_export->seqnum_max = udev_queue_export->seqnum_min; + + return -1; +} + +static int write_queue_record(struct udev_queue_export *udev_queue_export, + unsigned long long int seqnum, const char *devpath, size_t devpath_len) +{ + unsigned short len; + + if (udev_queue_export->queue_file == NULL) + return -1; + + if (fwrite(&seqnum, sizeof(unsigned long long int), 1, udev_queue_export->queue_file) != 1) + goto write_error; + + len = (devpath_len < USHRT_MAX) ? devpath_len : USHRT_MAX; + if (fwrite(&len, sizeof(unsigned short), 1, udev_queue_export->queue_file) != 1) + goto write_error; + if (len > 0) { + if (fwrite(devpath, 1, len, udev_queue_export->queue_file) != len) + goto write_error; + } + + /* *must* flush output; caller may fork */ + if (fflush(udev_queue_export->queue_file) != 0) + goto write_error; + + return 0; + +write_error: + /* if we failed half way through writing a record to a file, + we should not try to write any further records to it. */ + err(udev_queue_export->udev, "error writing to queue file: %m\n"); + fclose(udev_queue_export->queue_file); + udev_queue_export->queue_file = NULL; + + return -1; +} + +enum device_state { + DEVICE_QUEUED, + DEVICE_FINISHED, +}; + +static inline size_t queue_record_size(size_t devpath_len) +{ + return sizeof(unsigned long long int) + sizeof(unsigned short int) + devpath_len; +} + +static int update_queue(struct udev_queue_export *udev_queue_export, + struct udev_device *udev_device, enum device_state state) +{ + unsigned long long int seqnum = udev_device_get_seqnum(udev_device); + const char *devpath = NULL; + size_t devpath_len = 0; + int bytes; + int err; + + /* FINISHED records have a zero length devpath */ + if (state == DEVICE_QUEUED) { + devpath = udev_device_get_devpath(udev_device); + devpath_len = strlen(devpath); + } + + /* recover from an earlier failed rebuild */ + if (udev_queue_export->queue_file == NULL) { + if (rebuild_queue_file(udev_queue_export) != 0) + return -1; + } + + /* if we're removing the last event from the queue, that's the best time to rebuild it */ + if (state != DEVICE_QUEUED && udev_queue_export->queued_count == 1) { + /* we don't need to read the old queue file */ + fclose(udev_queue_export->queue_file); + udev_queue_export->queue_file = NULL; + rebuild_queue_file(udev_queue_export); + return 0; + } + + /* try to rebuild the queue files before they grow larger than one page. */ + bytes = ftell(udev_queue_export->queue_file) + queue_record_size(devpath_len); + if ((udev_queue_export->waste_bytes > bytes / 2) && bytes > 4096) + rebuild_queue_file(udev_queue_export); + + /* don't record a finished event, if we already dropped the event in a failed rebuild */ + if (seqnum < udev_queue_export->seqnum_max) + return 0; + + /* now write to the queue */ + if (state == DEVICE_QUEUED) { + udev_queue_export->queued_count++; + udev_queue_export->seqnum_min = seqnum; + } else { + udev_queue_export->waste_bytes += queue_record_size(devpath_len) + queue_record_size(0); + udev_queue_export->queued_count--; + } + err = write_queue_record(udev_queue_export, seqnum, devpath, devpath_len); + + /* try to handle ENOSPC */ + if (err != 0 && udev_queue_export->queued_count == 0) { + udev_queue_export_cleanup(udev_queue_export); + err = rebuild_queue_file(udev_queue_export); + } + + return err; +} + +static int update(struct udev_queue_export *udev_queue_export, + struct udev_device *udev_device, enum device_state state) +{ + if (update_queue(udev_queue_export, udev_device, state) != 0) + return -1; + + return 0; +} + +int udev_queue_export_device_queued(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device) +{ + return update(udev_queue_export, udev_device, DEVICE_QUEUED); +} + +int udev_queue_export_device_finished(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device) +{ + return update(udev_queue_export, udev_device, DEVICE_FINISHED); +} diff --git a/src/libudev/libudev-queue.c b/src/libudev/libudev-queue.c new file mode 100644 index 0000000000..72408d0166 --- /dev/null +++ b/src/libudev/libudev-queue.c @@ -0,0 +1,466 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008 Kay Sievers + * Copyright (C) 2009 Alan Jenkins + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +/** + * SECTION:libudev-queue + * @short_description: access to currently active events + * + * The udev daemon processes events asynchronously. All events which do not have + * interdependencies run in parallel. This exports the current state of the + * event processing queue, and the current event sequence numbers from the kernel + * and the udev daemon. + */ + +/** + * udev_queue: + * + * Opaque object representing the current event queue in the udev daemon. + */ +struct udev_queue { + struct udev *udev; + int refcount; + struct udev_list queue_list; +}; + +/** + * udev_queue_new: + * @udev: udev library context + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev queue context. + * + * Returns: the udev queue context, or #NULL on error. + **/ +_public_ struct udev_queue *udev_queue_new(struct udev *udev) +{ + struct udev_queue *udev_queue; + + if (udev == NULL) + return NULL; + + udev_queue = calloc(1, sizeof(struct udev_queue)); + if (udev_queue == NULL) + return NULL; + udev_queue->refcount = 1; + udev_queue->udev = udev; + udev_list_init(udev, &udev_queue->queue_list, false); + return udev_queue; +} + +/** + * udev_queue_ref: + * @udev_queue: udev queue context + * + * Take a reference of a udev queue context. + * + * Returns: the same udev queue context. + **/ +_public_ struct udev_queue *udev_queue_ref(struct udev_queue *udev_queue) +{ + if (udev_queue == NULL) + return NULL; + udev_queue->refcount++; + return udev_queue; +} + +/** + * udev_queue_unref: + * @udev_queue: udev queue context + * + * Drop a reference of a udev queue context. If the refcount reaches zero, + * the resources of the queue context will be released. + **/ +_public_ void udev_queue_unref(struct udev_queue *udev_queue) +{ + if (udev_queue == NULL) + return; + udev_queue->refcount--; + if (udev_queue->refcount > 0) + return; + udev_list_cleanup(&udev_queue->queue_list); + free(udev_queue); +} + +/** + * udev_queue_get_udev: + * @udev_queue: udev queue context + * + * Retrieve the udev library context the queue context was created with. + * + * Returns: the udev library context. + **/ +_public_ struct udev *udev_queue_get_udev(struct udev_queue *udev_queue) +{ + if (udev_queue == NULL) + return NULL; + return udev_queue->udev; +} + +unsigned long long int udev_get_kernel_seqnum(struct udev *udev) +{ + char filename[UTIL_PATH_SIZE]; + unsigned long long int seqnum; + int fd; + char buf[32]; + ssize_t len; + + util_strscpyl(filename, sizeof(filename), udev_get_sys_path(udev), "/kernel/uevent_seqnum", NULL); + fd = open(filename, O_RDONLY|O_CLOEXEC); + if (fd < 0) + return 0; + len = read(fd, buf, sizeof(buf)); + close(fd); + if (len <= 2) + return 0; + buf[len-1] = '\0'; + seqnum = strtoull(buf, NULL, 10); + return seqnum; +} + +/** + * udev_queue_get_kernel_seqnum: + * @udev_queue: udev queue context + * + * Returns: the current kernel event sequence number. + **/ +_public_ unsigned long long int udev_queue_get_kernel_seqnum(struct udev_queue *udev_queue) +{ + unsigned long long int seqnum; + + if (udev_queue == NULL) + return -EINVAL; + + seqnum = udev_get_kernel_seqnum(udev_queue->udev); + return seqnum; +} + +int udev_queue_read_seqnum(FILE *queue_file, unsigned long long int *seqnum) +{ + if (fread(seqnum, sizeof(unsigned long long int), 1, queue_file) != 1) + return -1; + + return 0; +} + +ssize_t udev_queue_skip_devpath(FILE *queue_file) +{ + unsigned short int len; + + if (fread(&len, sizeof(unsigned short int), 1, queue_file) == 1) { + char *devpath = alloca(len); + + /* use fread to skip, fseek might drop buffered data */ + if (fread(devpath, 1, len, queue_file) == len) + return len; + } + + return -1; +} + +ssize_t udev_queue_read_devpath(FILE *queue_file, char *devpath, size_t size) +{ + unsigned short int read_bytes = 0; + unsigned short int len; + + if (fread(&len, sizeof(unsigned short int), 1, queue_file) != 1) + return -1; + + read_bytes = (len < size - 1) ? len : size - 1; + if (fread(devpath, 1, read_bytes, queue_file) != read_bytes) + return -1; + devpath[read_bytes] = '\0'; + + /* if devpath was too long, skip unread characters */ + if (read_bytes != len) { + unsigned short int skip_bytes = len - read_bytes; + char *buf = alloca(skip_bytes); + + if (fread(buf, 1, skip_bytes, queue_file) != skip_bytes) + return -1; + } + + return read_bytes; +} + +static FILE *open_queue_file(struct udev_queue *udev_queue, unsigned long long int *seqnum_start) +{ + char filename[UTIL_PATH_SIZE]; + FILE *queue_file; + + util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue->udev), "/queue.bin", NULL); + queue_file = fopen(filename, "re"); + if (queue_file == NULL) + return NULL; + + if (udev_queue_read_seqnum(queue_file, seqnum_start) < 0) { + err(udev_queue->udev, "corrupt queue file\n"); + fclose(queue_file); + return NULL; + } + + return queue_file; +} + +/** + * udev_queue_get_udev_seqnum: + * @udev_queue: udev queue context + * + * Returns: the last known udev event sequence number. + **/ +_public_ unsigned long long int udev_queue_get_udev_seqnum(struct udev_queue *udev_queue) +{ + unsigned long long int seqnum_udev; + FILE *queue_file; + + queue_file = open_queue_file(udev_queue, &seqnum_udev); + if (queue_file == NULL) + return 0; + + for (;;) { + unsigned long long int seqnum; + ssize_t devpath_len; + + if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) + break; + devpath_len = udev_queue_skip_devpath(queue_file); + if (devpath_len < 0) + break; + if (devpath_len > 0) + seqnum_udev = seqnum; + } + + fclose(queue_file); + return seqnum_udev; +} + +/** + * udev_queue_get_udev_is_active: + * @udev_queue: udev queue context + * + * Returns: a flag indicating if udev is active. + **/ +_public_ int udev_queue_get_udev_is_active(struct udev_queue *udev_queue) +{ + unsigned long long int seqnum_start; + FILE *queue_file; + + queue_file = open_queue_file(udev_queue, &seqnum_start); + if (queue_file == NULL) + return 0; + + fclose(queue_file); + return 1; +} + +/** + * udev_queue_get_queue_is_empty: + * @udev_queue: udev queue context + * + * Returns: a flag indicating if udev is currently handling events. + **/ +_public_ int udev_queue_get_queue_is_empty(struct udev_queue *udev_queue) +{ + unsigned long long int seqnum_kernel; + unsigned long long int seqnum_udev = 0; + int queued = 0; + int is_empty = 0; + FILE *queue_file; + + if (udev_queue == NULL) + return -EINVAL; + queue_file = open_queue_file(udev_queue, &seqnum_udev); + if (queue_file == NULL) + return 1; + + for (;;) { + unsigned long long int seqnum; + ssize_t devpath_len; + + if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) + break; + devpath_len = udev_queue_skip_devpath(queue_file); + if (devpath_len < 0) + break; + + if (devpath_len > 0) { + queued++; + seqnum_udev = seqnum; + } else { + queued--; + } + } + + if (queued > 0) + goto out; + + seqnum_kernel = udev_queue_get_kernel_seqnum(udev_queue); + if (seqnum_udev < seqnum_kernel) + goto out; + + is_empty = 1; + +out: + fclose(queue_file); + return is_empty; +} + +/** + * udev_queue_get_seqnum_sequence_is_finished: + * @udev_queue: udev queue context + * @start: first event sequence number + * @end: last event sequence number + * + * Returns: a flag indicating if any of the sequence numbers in the given range is currently active. + **/ +_public_ int udev_queue_get_seqnum_sequence_is_finished(struct udev_queue *udev_queue, + unsigned long long int start, unsigned long long int end) +{ + unsigned long long int seqnum; + ssize_t devpath_len; + int unfinished; + FILE *queue_file; + + if (udev_queue == NULL) + return -EINVAL; + queue_file = open_queue_file(udev_queue, &seqnum); + if (queue_file == NULL) + return 1; + if (start < seqnum) + start = seqnum; + if (start > end) { + fclose(queue_file); + return 1; + } + if (end - start > INT_MAX - 1) { + fclose(queue_file); + return -EOVERFLOW; + } + + /* + * we might start with 0, and handle the initial seqnum + * only when we find an entry in the queue file + **/ + unfinished = end - start; + + do { + if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) + break; + devpath_len = udev_queue_skip_devpath(queue_file); + if (devpath_len < 0) + break; + + /* + * we might start with an empty or re-build queue file, where + * the initial seqnum is not recorded as finished + */ + if (start == seqnum && devpath_len > 0) + unfinished++; + + if (devpath_len == 0) { + if (seqnum >= start && seqnum <= end) + unfinished--; + } + } while (unfinished > 0); + + fclose(queue_file); + + return (unfinished == 0); +} + +/** + * udev_queue_get_seqnum_is_finished: + * @udev_queue: udev queue context + * @seqnum: sequence number + * + * Returns: a flag indicating if the given sequence number is currently active. + **/ +_public_ int udev_queue_get_seqnum_is_finished(struct udev_queue *udev_queue, unsigned long long int seqnum) +{ + if (!udev_queue_get_seqnum_sequence_is_finished(udev_queue, seqnum, seqnum)) + return 0; + + return 1; +} + +/** + * udev_queue_get_queued_list_entry: + * @udev_queue: udev queue context + * + * Returns: the first entry of the list of queued events. + **/ +_public_ struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_queue *udev_queue) +{ + unsigned long long int seqnum; + FILE *queue_file; + + if (udev_queue == NULL) + return NULL; + udev_list_cleanup(&udev_queue->queue_list); + + queue_file = open_queue_file(udev_queue, &seqnum); + if (queue_file == NULL) + return NULL; + + for (;;) { + char syspath[UTIL_PATH_SIZE]; + char *s; + size_t l; + ssize_t len; + char seqnum_str[32]; + struct udev_list_entry *list_entry; + + if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) + break; + snprintf(seqnum_str, sizeof(seqnum_str), "%llu", seqnum); + + s = syspath; + l = util_strpcpyl(&s, sizeof(syspath), udev_get_sys_path(udev_queue->udev), NULL); + len = udev_queue_read_devpath(queue_file, s, l); + if (len < 0) + break; + + if (len > 0) { + udev_list_entry_add(&udev_queue->queue_list, syspath, seqnum_str); + } else { + udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_queue->queue_list)) { + if (strcmp(seqnum_str, udev_list_entry_get_value(list_entry)) == 0) { + udev_list_entry_delete(list_entry); + break; + } + } + } + } + fclose(queue_file); + + return udev_list_get_entry(&udev_queue->queue_list); +} + +struct udev_list_entry *udev_queue_get_failed_list_entry(struct udev_queue *udev_queue); +_public_ struct udev_list_entry *udev_queue_get_failed_list_entry(struct udev_queue *udev_queue) +{ + errno = ENOSYS; + return NULL; +} diff --git a/src/libudev/libudev-selinux-private.c b/src/libudev/libudev-selinux-private.c new file mode 100644 index 0000000000..d68097f991 --- /dev/null +++ b/src/libudev/libudev-selinux-private.c @@ -0,0 +1,109 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +static int selinux_enabled; +security_context_t selinux_prev_scontext; + +void udev_selinux_init(struct udev *udev) +{ + /* record the present security context */ + selinux_enabled = (is_selinux_enabled() > 0); + dbg(udev, "selinux=%i\n", selinux_enabled); + if (!selinux_enabled) + return; + matchpathcon_init_prefix(NULL, udev_get_dev_path(udev)); + if (getfscreatecon(&selinux_prev_scontext) < 0) { + err(udev, "getfscreatecon failed\n"); + selinux_prev_scontext = NULL; + } +} + +void udev_selinux_exit(struct udev *udev) +{ + if (!selinux_enabled) + return; + freecon(selinux_prev_scontext); + selinux_prev_scontext = NULL; +} + +void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode) +{ + security_context_t scontext = NULL; + + if (!selinux_enabled) + return; + if (matchpathcon(file, mode, &scontext) < 0) { + err(udev, "matchpathcon(%s) failed\n", file); + return; + } + if (lsetfilecon(file, scontext) < 0) + err(udev, "setfilecon %s failed: %m\n", file); + freecon(scontext); +} + +void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode) +{ + security_context_t scontext = NULL; + + if (!selinux_enabled) + return; + + if (matchpathcon(file, mode, &scontext) < 0) { + err(udev, "matchpathcon(%s) failed\n", file); + return; + } + if (setfscreatecon(scontext) < 0) + err(udev, "setfscreatecon %s failed: %m\n", file); + freecon(scontext); +} + +void udev_selinux_resetfscreatecon(struct udev *udev) +{ + if (!selinux_enabled) + return; + if (setfscreatecon(selinux_prev_scontext) < 0) + err(udev, "setfscreatecon failed: %m\n"); +} + +void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode) +{ + char filename[UTIL_PATH_SIZE]; + + if (!selinux_enabled) + return; + + /* resolve relative filename */ + if (file[0] != '/') { + char procfd[UTIL_PATH_SIZE]; + char target[UTIL_PATH_SIZE]; + ssize_t len; + + snprintf(procfd, sizeof(procfd), "/proc/%u/fd/%u", getpid(), dfd); + len = readlink(procfd, target, sizeof(target)); + if (len <= 0 || len == sizeof(target)) + return; + target[len] = '\0'; + + util_strscpyl(filename, sizeof(filename), target, "/", file, NULL); + file = filename; + } + udev_selinux_setfscreatecon(udev, file, mode); +} diff --git a/src/libudev/libudev-util-private.c b/src/libudev/libudev-util-private.c new file mode 100644 index 0000000000..44ff02cc33 --- /dev/null +++ b/src/libudev/libudev-util-private.c @@ -0,0 +1,239 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2003-2009 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +static int create_path(struct udev *udev, const char *path, bool selinux) +{ + char p[UTIL_PATH_SIZE]; + char *pos; + struct stat stats; + int err; + + util_strscpy(p, sizeof(p), path); + pos = strrchr(p, '/'); + if (pos == NULL) + return 0; + while (pos != p && pos[-1] == '/') + pos--; + if (pos == p) + return 0; + pos[0] = '\0'; + + if (stat(p, &stats) == 0) { + if ((stats.st_mode & S_IFMT) == S_IFDIR) + return 0; + else + return -ENOTDIR; + } + + err = util_create_path(udev, p); + if (err != 0) + return err; + + if (selinux) + udev_selinux_setfscreatecon(udev, p, S_IFDIR|0755); + err = mkdir(p, 0755); + if (err != 0) { + err = -errno; + if (err == -EEXIST && stat(p, &stats) == 0) { + if ((stats.st_mode & S_IFMT) == S_IFDIR) + err = 0; + else + err = -ENOTDIR; + } + } + if (selinux) + udev_selinux_resetfscreatecon(udev); + return err; +} + +int util_create_path(struct udev *udev, const char *path) +{ + return create_path(udev, path, false); +} + +int util_create_path_selinux(struct udev *udev, const char *path) +{ + return create_path(udev, path, true); +} + +int util_delete_path(struct udev *udev, const char *path) +{ + char p[UTIL_PATH_SIZE]; + char *pos; + int err = 0; + + if (path[0] == '/') + while(path[1] == '/') + path++; + util_strscpy(p, sizeof(p), path); + pos = strrchr(p, '/'); + if (pos == p || pos == NULL) + return 0; + + for (;;) { + *pos = '\0'; + pos = strrchr(p, '/'); + + /* don't remove the last one */ + if ((pos == p) || (pos == NULL)) + break; + + err = rmdir(p); + if (err < 0) { + if (errno == ENOENT) + err = 0; + break; + } + } + return err; +} + +uid_t util_lookup_user(struct udev *udev, const char *user) +{ + char *endptr; + struct passwd pwbuf; + struct passwd *pw; + uid_t uid; + size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX); + char *buf = alloca(buflen); + + if (strcmp(user, "root") == 0) + return 0; + uid = strtoul(user, &endptr, 10); + if (endptr[0] == '\0') + return uid; + + errno = getpwnam_r(user, &pwbuf, buf, buflen, &pw); + if (pw != NULL) + return pw->pw_uid; + if (errno == 0 || errno == ENOENT || errno == ESRCH) + err(udev, "specified user '%s' unknown\n", user); + else + err(udev, "error resolving user '%s': %m\n", user); + return 0; +} + +gid_t util_lookup_group(struct udev *udev, const char *group) +{ + char *endptr; + struct group grbuf; + struct group *gr; + gid_t gid = 0; + size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX); + char *buf = NULL; + + if (strcmp(group, "root") == 0) + return 0; + gid = strtoul(group, &endptr, 10); + if (endptr[0] == '\0') + return gid; + gid = 0; + for (;;) { + char *newbuf; + + newbuf = realloc(buf, buflen); + if (!newbuf) + break; + buf = newbuf; + errno = getgrnam_r(group, &grbuf, buf, buflen, &gr); + if (gr != NULL) { + gid = gr->gr_gid; + } else if (errno == ERANGE) { + buflen *= 2; + continue; + } else if (errno == 0 || errno == ENOENT || errno == ESRCH) { + err(udev, "specified group '%s' unknown\n", group); + } else { + err(udev, "error resolving group '%s': %m\n", group); + } + break; + } + free(buf); + return gid; +} + +/* handle "[/]" format */ +int util_resolve_subsys_kernel(struct udev *udev, const char *string, + char *result, size_t maxsize, int read_value) +{ + char temp[UTIL_PATH_SIZE]; + char *subsys; + char *sysname; + struct udev_device *dev; + char *attr; + + if (string[0] != '[') + return -1; + + util_strscpy(temp, sizeof(temp), string); + + subsys = &temp[1]; + + sysname = strchr(subsys, '/'); + if (sysname == NULL) + return -1; + sysname[0] = '\0'; + sysname = &sysname[1]; + + attr = strchr(sysname, ']'); + if (attr == NULL) + return -1; + attr[0] = '\0'; + attr = &attr[1]; + if (attr[0] == '/') + attr = &attr[1]; + if (attr[0] == '\0') + attr = NULL; + + if (read_value && attr == NULL) + return -1; + + dev = udev_device_new_from_subsystem_sysname(udev, subsys, sysname); + if (dev == NULL) + return -1; + + if (read_value) { + const char *val; + + val = udev_device_get_sysattr_value(dev, attr); + if (val != NULL) + util_strscpy(result, maxsize, val); + else + result[0] = '\0'; + dbg(udev, "value '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result); + } else { + size_t l; + char *s; + + s = result; + l = util_strpcpyl(&s, maxsize, udev_device_get_syspath(dev), NULL); + if (attr != NULL) + util_strpcpyl(&s, l, "/", attr, NULL); + dbg(udev, "path '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result); + } + udev_device_unref(dev); + return 0; +} diff --git a/src/libudev/libudev-util.c b/src/libudev/libudev-util.c new file mode 100644 index 0000000000..cb17c3f48c --- /dev/null +++ b/src/libudev/libudev-util.c @@ -0,0 +1,566 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2011 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +/** + * SECTION:libudev-util + * @short_description: utils + */ + +ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const char *syspath, char *value, size_t size) +{ + char path[UTIL_PATH_SIZE]; + char target[UTIL_PATH_SIZE]; + ssize_t len; + const char *pos; + + util_strscpyl(path, sizeof(path), syspath, "/", slink, NULL); + len = readlink(path, target, sizeof(target)); + if (len <= 0 || len == (ssize_t)sizeof(target)) + return -1; + target[len] = '\0'; + pos = strrchr(target, '/'); + if (pos == NULL) + return -1; + pos = &pos[1]; + return util_strscpy(value, size, pos); +} + +int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size) +{ + char link_target[UTIL_PATH_SIZE]; + + ssize_t len; + int i; + int back; + char *base = NULL; + + len = readlink(syspath, link_target, sizeof(link_target)); + if (len <= 0 || len == (ssize_t)sizeof(link_target)) + return -1; + link_target[len] = '\0'; + + for (back = 0; strncmp(&link_target[back * 3], "../", 3) == 0; back++) + ; + for (i = 0; i <= back; i++) { + base = strrchr(syspath, '/'); + if (base == NULL) + return -EINVAL; + base[0] = '\0'; + } + if (base == NULL) + return -EINVAL; + util_strscpyl(base, size - (base - syspath), "/", &link_target[back * 3], NULL); + return 0; +} + +int util_log_priority(const char *priority) +{ + char *endptr; + int prio; + + prio = strtol(priority, &endptr, 10); + if (endptr[0] == '\0' || isspace(endptr[0])) + return prio; + if (strncmp(priority, "err", 3) == 0) + return LOG_ERR; + if (strncmp(priority, "info", 4) == 0) + return LOG_INFO; + if (strncmp(priority, "debug", 5) == 0) + return LOG_DEBUG; + return 0; +} + +size_t util_path_encode(const char *src, char *dest, size_t size) +{ + size_t i, j; + + for (i = 0, j = 0; src[i] != '\0'; i++) { + if (src[i] == '/') { + if (j+4 >= size) { + j = 0; + break; + } + memcpy(&dest[j], "\\x2f", 4); + j += 4; + } else if (src[i] == '\\') { + if (j+4 >= size) { + j = 0; + break; + } + memcpy(&dest[j], "\\x5c", 4); + j += 4; + } else { + if (j+1 >= size) { + j = 0; + break; + } + dest[j] = src[i]; + j++; + } + } + dest[j] = '\0'; + return j; +} + +size_t util_path_decode(char *s) +{ + size_t i, j; + + for (i = 0, j = 0; s[i] != '\0'; j++) { + if (memcmp(&s[i], "\\x2f", 4) == 0) { + s[j] = '/'; + i += 4; + } else if (memcmp(&s[i], "\\x5c", 4) == 0) { + s[j] = '\\'; + i += 4; + } else { + s[j] = s[i]; + i++; + } + } + s[j] = '\0'; + return j; +} + +void util_remove_trailing_chars(char *path, char c) +{ + size_t len; + + if (path == NULL) + return; + len = strlen(path); + while (len > 0 && path[len-1] == c) + path[--len] = '\0'; +} + +/* + * Concatenates strings. In any case, terminates in _all_ cases with '\0' + * and moves the @dest pointer forward to the added '\0'. Returns the + * remaining size, and 0 if the string was truncated. + */ +size_t util_strpcpy(char **dest, size_t size, const char *src) +{ + size_t len; + + len = strlen(src); + if (len >= size) { + if (size > 1) + *dest = mempcpy(*dest, src, size-1); + size = 0; + *dest[0] = '\0'; + } else { + if (len > 0) { + *dest = mempcpy(*dest, src, len); + size -= len; + } + *dest[0] = '\0'; + } + return size; +} + +/* concatenates list of strings, moves dest forward */ +size_t util_strpcpyl(char **dest, size_t size, const char *src, ...) +{ + va_list va; + + va_start(va, src); + do { + size = util_strpcpy(dest, size, src); + src = va_arg(va, char *); + } while (src != NULL); + va_end(va); + + return size; +} + +/* copies string */ +size_t util_strscpy(char *dest, size_t size, const char *src) +{ + char *s; + + s = dest; + return util_strpcpy(&s, size, src); +} + +/* concatenates list of strings */ +size_t util_strscpyl(char *dest, size_t size, const char *src, ...) +{ + va_list va; + char *s; + + va_start(va, src); + s = dest; + do { + size = util_strpcpy(&s, size, src); + src = va_arg(va, char *); + } while (src != NULL); + va_end(va); + + return size; +} + +/* count of characters used to encode one unicode char */ +static int utf8_encoded_expected_len(const char *str) +{ + unsigned char c = (unsigned char)str[0]; + + if (c < 0x80) + return 1; + if ((c & 0xe0) == 0xc0) + return 2; + if ((c & 0xf0) == 0xe0) + return 3; + if ((c & 0xf8) == 0xf0) + return 4; + if ((c & 0xfc) == 0xf8) + return 5; + if ((c & 0xfe) == 0xfc) + return 6; + return 0; +} + +/* decode one unicode char */ +static int utf8_encoded_to_unichar(const char *str) +{ + int unichar; + int len; + int i; + + len = utf8_encoded_expected_len(str); + switch (len) { + case 1: + return (int)str[0]; + case 2: + unichar = str[0] & 0x1f; + break; + case 3: + unichar = (int)str[0] & 0x0f; + break; + case 4: + unichar = (int)str[0] & 0x07; + break; + case 5: + unichar = (int)str[0] & 0x03; + break; + case 6: + unichar = (int)str[0] & 0x01; + break; + default: + return -1; + } + + for (i = 1; i < len; i++) { + if (((int)str[i] & 0xc0) != 0x80) + return -1; + unichar <<= 6; + unichar |= (int)str[i] & 0x3f; + } + + return unichar; +} + +/* expected size used to encode one unicode char */ +static int utf8_unichar_to_encoded_len(int unichar) +{ + if (unichar < 0x80) + return 1; + if (unichar < 0x800) + return 2; + if (unichar < 0x10000) + return 3; + if (unichar < 0x200000) + return 4; + if (unichar < 0x4000000) + return 5; + return 6; +} + +/* check if unicode char has a valid numeric range */ +static int utf8_unichar_valid_range(int unichar) +{ + if (unichar > 0x10ffff) + return 0; + if ((unichar & 0xfffff800) == 0xd800) + return 0; + if ((unichar > 0xfdcf) && (unichar < 0xfdf0)) + return 0; + if ((unichar & 0xffff) == 0xffff) + return 0; + return 1; +} + +/* validate one encoded unicode char and return its length */ +static int utf8_encoded_valid_unichar(const char *str) +{ + int len; + int unichar; + int i; + + len = utf8_encoded_expected_len(str); + if (len == 0) + return -1; + + /* ascii is valid */ + if (len == 1) + return 1; + + /* check if expected encoded chars are available */ + for (i = 0; i < len; i++) + if ((str[i] & 0x80) != 0x80) + return -1; + + unichar = utf8_encoded_to_unichar(str); + + /* check if encoded length matches encoded value */ + if (utf8_unichar_to_encoded_len(unichar) != len) + return -1; + + /* check if value has valid range */ + if (!utf8_unichar_valid_range(unichar)) + return -1; + + return len; +} + +int util_replace_whitespace(const char *str, char *to, size_t len) +{ + size_t i, j; + + /* strip trailing whitespace */ + len = strnlen(str, len); + while (len && isspace(str[len-1])) + len--; + + /* strip leading whitespace */ + i = 0; + while (isspace(str[i]) && (i < len)) + i++; + + j = 0; + while (i < len) { + /* substitute multiple whitespace with a single '_' */ + if (isspace(str[i])) { + while (isspace(str[i])) + i++; + to[j++] = '_'; + } + to[j++] = str[i++]; + } + to[j] = '\0'; + return 0; +} + +static int is_whitelisted(char c, const char *white) +{ + if ((c >= '0' && c <= '9') || + (c >= 'A' && c <= 'Z') || + (c >= 'a' && c <= 'z') || + strchr("#+-.:=@_", c) != NULL || + (white != NULL && strchr(white, c) != NULL)) + return 1; + return 0; +} + +/* allow chars in whitelist, plain ascii, hex-escaping and valid utf8 */ +int util_replace_chars(char *str, const char *white) +{ + size_t i = 0; + int replaced = 0; + + while (str[i] != '\0') { + int len; + + if (is_whitelisted(str[i], white)) { + i++; + continue; + } + + /* accept hex encoding */ + if (str[i] == '\\' && str[i+1] == 'x') { + i += 2; + continue; + } + + /* accept valid utf8 */ + len = utf8_encoded_valid_unichar(&str[i]); + if (len > 1) { + i += len; + continue; + } + + /* if space is allowed, replace whitespace with ordinary space */ + if (isspace(str[i]) && white != NULL && strchr(white, ' ') != NULL) { + str[i] = ' '; + i++; + replaced++; + continue; + } + + /* everything else is replaced with '_' */ + str[i] = '_'; + i++; + replaced++; + } + return replaced; +} + +/** + * udev_util_encode_string: + * @str: input string to be encoded + * @str_enc: output string to store the encoded input string + * @len: maximum size of the output string, which may be + * four times as long as the input string + * + * Encode all potentially unsafe characters of a string to the + * corresponding 2 char hex value prefixed by '\x'. + * + * Returns: 0 if the entire string was copied, non-zero otherwise. + **/ +_public_ int udev_util_encode_string(const char *str, char *str_enc, size_t len) +{ + size_t i, j; + + if (str == NULL || str_enc == NULL) + return -1; + + for (i = 0, j = 0; str[i] != '\0'; i++) { + int seqlen; + + seqlen = utf8_encoded_valid_unichar(&str[i]); + if (seqlen > 1) { + if (len-j < (size_t)seqlen) + goto err; + memcpy(&str_enc[j], &str[i], seqlen); + j += seqlen; + i += (seqlen-1); + } else if (str[i] == '\\' || !is_whitelisted(str[i], NULL)) { + if (len-j < 4) + goto err; + sprintf(&str_enc[j], "\\x%02x", (unsigned char) str[i]); + j += 4; + } else { + if (len-j < 1) + goto err; + str_enc[j] = str[i]; + j++; + } + } + if (len-j < 1) + goto err; + str_enc[j] = '\0'; + return 0; +err: + return -1; +} + +/* + * http://sites.google.com/site/murmurhash/ + * + * All code is released to the public domain. For business purposes, + * Murmurhash is under the MIT license. + * + */ +static unsigned int murmur_hash2(const char *key, int len, unsigned int seed) +{ + /* + * 'm' and 'r' are mixing constants generated offline. + * They're not really 'magic', they just happen to work well. + */ + const unsigned int m = 0x5bd1e995; + const int r = 24; + + /* initialize the hash to a 'random' value */ + unsigned int h = seed ^ len; + + /* mix 4 bytes at a time into the hash */ + const unsigned char * data = (const unsigned char *)key; + + while(len >= 4) { + unsigned int k = *(unsigned int *)data; + + k *= m; + k ^= k >> r; + k *= m; + h *= m; + h ^= k; + + data += 4; + len -= 4; + } + + /* handle the last few bytes of the input array */ + switch(len) { + case 3: + h ^= data[2] << 16; + case 2: + h ^= data[1] << 8; + case 1: + h ^= data[0]; + h *= m; + }; + + /* do a few final mixes of the hash to ensure the last few bytes are well-incorporated */ + h ^= h >> 13; + h *= m; + h ^= h >> 15; + + return h; +} + +unsigned int util_string_hash32(const char *str) +{ + return murmur_hash2(str, strlen(str), 0); +} + +/* get a bunch of bit numbers out of the hash, and set the bits in our bit field */ +uint64_t util_string_bloom64(const char *str) +{ + uint64_t bits = 0; + unsigned int hash = util_string_hash32(str); + + bits |= 1LLU << (hash & 63); + bits |= 1LLU << ((hash >> 6) & 63); + bits |= 1LLU << ((hash >> 12) & 63); + bits |= 1LLU << ((hash >> 18) & 63); + return bits; +} + +#define USEC_PER_SEC 1000000ULL +#define NSEC_PER_USEC 1000ULL +unsigned long long ts_usec(const struct timespec *ts) +{ + return (unsigned long long) ts->tv_sec * USEC_PER_SEC + + (unsigned long long) ts->tv_nsec / NSEC_PER_USEC; +} + +unsigned long long now_usec(void) +{ + struct timespec ts; + + if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0) + return 0; + return ts_usec(&ts); +} diff --git a/src/libudev/libudev.c b/src/libudev/libudev.c new file mode 100644 index 0000000000..74b53cbf1b --- /dev/null +++ b/src/libudev/libudev.c @@ -0,0 +1,449 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2010 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "libudev.h" +#include "libudev-private.h" + +/** + * SECTION:libudev + * @short_description: libudev context + * + * The context contains the default values read from the udev config file, + * and is passed to all library operations. + */ + +/** + * udev: + * + * Opaque object representing the library context. + */ +struct udev { + int refcount; + void (*log_fn)(struct udev *udev, + int priority, const char *file, int line, const char *fn, + const char *format, va_list args); + void *userdata; + char *sys_path; + char *dev_path; + char *rules_path[4]; + unsigned long long rules_path_ts[4]; + int rules_path_count; + char *run_path; + struct udev_list properties_list; + int log_priority; +}; + +void udev_log(struct udev *udev, + int priority, const char *file, int line, const char *fn, + const char *format, ...) +{ + va_list args; + + va_start(args, format); + udev->log_fn(udev, priority, file, line, fn, format, args); + va_end(args); +} + +static void log_stderr(struct udev *udev, + int priority, const char *file, int line, const char *fn, + const char *format, va_list args) +{ + fprintf(stderr, "libudev: %s: ", fn); + vfprintf(stderr, format, args); +} + +/** + * udev_get_userdata: + * @udev: udev library context + * + * Retrieve stored data pointer from library context. This might be useful + * to access from callbacks like a custom logging function. + * + * Returns: stored userdata + **/ +_public_ void *udev_get_userdata(struct udev *udev) +{ + if (udev == NULL) + return NULL; + return udev->userdata; +} + +/** + * udev_set_userdata: + * @udev: udev library context + * @userdata: data pointer + * + * Store custom @userdata in the library context. + **/ +_public_ void udev_set_userdata(struct udev *udev, void *userdata) +{ + if (udev == NULL) + return; + udev->userdata = userdata; +} + +static char *set_value(char **s, const char *v) +{ + free(*s); + *s = strdup(v); + util_remove_trailing_chars(*s, '/'); + return *s; +} + +/** + * udev_new: + * + * Create udev library context. This reads the udev configuration + * file, and fills in the default values. + * + * The initial refcount is 1, and needs to be decremented to + * release the resources of the udev library context. + * + * Returns: a new udev library context + **/ +_public_ struct udev *udev_new(void) +{ + struct udev *udev; + const char *env; + char *config_file = NULL; + FILE *f; + + udev = calloc(1, sizeof(struct udev)); + if (udev == NULL) + return NULL; + udev->refcount = 1; + udev->log_fn = log_stderr; + udev->log_priority = LOG_ERR; + udev_list_init(udev, &udev->properties_list, true); + + /* custom config file */ + env = getenv("UDEV_CONFIG_FILE"); + if (env != NULL) { + if (set_value(&config_file, env) == NULL) + goto err; + udev_add_property(udev, "UDEV_CONFIG_FILE", config_file); + } + + /* default config file */ + if (config_file == NULL) + config_file = strdup(SYSCONFDIR "/udev/udev.conf"); + if (config_file == NULL) + goto err; + + f = fopen(config_file, "re"); + if (f != NULL) { + char line[UTIL_LINE_SIZE]; + int line_nr = 0; + + while (fgets(line, sizeof(line), f)) { + size_t len; + char *key; + char *val; + + line_nr++; + + /* find key */ + key = line; + while (isspace(key[0])) + key++; + + /* comment or empty line */ + if (key[0] == '#' || key[0] == '\0') + continue; + + /* split key/value */ + val = strchr(key, '='); + if (val == NULL) { + err(udev, "missing = in '%s'[%i], skip line\n", config_file, line_nr); + continue; + } + val[0] = '\0'; + val++; + + /* find value */ + while (isspace(val[0])) + val++; + + /* terminate key */ + len = strlen(key); + if (len == 0) + continue; + while (isspace(key[len-1])) + len--; + key[len] = '\0'; + + /* terminate value */ + len = strlen(val); + if (len == 0) + continue; + while (isspace(val[len-1])) + len--; + val[len] = '\0'; + + if (len == 0) + continue; + + /* unquote */ + if (val[0] == '"' || val[0] == '\'') { + if (val[len-1] != val[0]) { + err(udev, "inconsistent quoting in '%s'[%i], skip line\n", config_file, line_nr); + continue; + } + val[len-1] = '\0'; + val++; + } + + if (strcmp(key, "udev_log") == 0) { + udev_set_log_priority(udev, util_log_priority(val)); + continue; + } + if (strcmp(key, "udev_root") == 0) { + set_value(&udev->dev_path, val); + continue; + } + if (strcmp(key, "udev_run") == 0) { + set_value(&udev->run_path, val); + continue; + } + if (strcmp(key, "udev_sys") == 0) { + set_value(&udev->sys_path, val); + continue; + } + if (strcmp(key, "udev_rules") == 0) { + set_value(&udev->rules_path[0], val); + udev->rules_path_count = 1; + continue; + } + } + fclose(f); + } + + /* environment overrides config */ + env = getenv("UDEV_LOG"); + if (env != NULL) + udev_set_log_priority(udev, util_log_priority(env)); + + /* set defaults */ + if (udev->dev_path == NULL) + if (set_value(&udev->dev_path, "/dev") == NULL) + goto err; + + if (udev->sys_path == NULL) + if (set_value(&udev->sys_path, "/sys") == NULL) + goto err; + + if (udev->run_path == NULL) + if (set_value(&udev->run_path, "/run/udev") == NULL) + goto err; + + if (udev->rules_path[0] == NULL) { + /* /usr/lib/udev -- system rules */ + udev->rules_path[0] = strdup(UDEVLIBEXECDIR "/rules.d"); + if (!udev->rules_path[0]) + goto err; + + /* /run/udev -- runtime rules */ + if (asprintf(&udev->rules_path[1], "%s/rules.d", udev->run_path) < 0) + goto err; + + /* /etc/udev -- local administration rules */ + udev->rules_path[2] = strdup(SYSCONFDIR "/udev/rules.d"); + if (!udev->rules_path[2]) + goto err; + + udev->rules_path_count = 3; + } + + free(config_file); + return udev; +err: + free(config_file); + err(udev, "context creation failed\n"); + udev_unref(udev); + return NULL; +} + +/** + * udev_ref: + * @udev: udev library context + * + * Take a reference of the udev library context. + * + * Returns: the passed udev library context + **/ +_public_ struct udev *udev_ref(struct udev *udev) +{ + if (udev == NULL) + return NULL; + udev->refcount++; + return udev; +} + +/** + * udev_unref: + * @udev: udev library context + * + * Drop a reference of the udev library context. If the refcount + * reaches zero, the resources of the context will be released. + * + **/ +_public_ void udev_unref(struct udev *udev) +{ + if (udev == NULL) + return; + udev->refcount--; + if (udev->refcount > 0) + return; + udev_list_cleanup(&udev->properties_list); + free(udev->dev_path); + free(udev->sys_path); + free(udev->rules_path[0]); + free(udev->rules_path[1]); + free(udev->rules_path[2]); + free(udev->run_path); + free(udev); +} + +/** + * udev_set_log_fn: + * @udev: udev library context + * @log_fn: function to be called for logging messages + * + * The built-in logging writes to stderr. It can be + * overridden by a custom function, to plug log messages + * into the users' logging functionality. + * + **/ +_public_ void udev_set_log_fn(struct udev *udev, + void (*log_fn)(struct udev *udev, + int priority, const char *file, int line, const char *fn, + const char *format, va_list args)) +{ + udev->log_fn = log_fn; + dbg(udev, "custom logging function %p registered\n", log_fn); +} + +/** + * udev_get_log_priority: + * @udev: udev library context + * + * The initial logging priority is read from the udev config file + * at startup. + * + * Returns: the current logging priority + **/ +_public_ int udev_get_log_priority(struct udev *udev) +{ + return udev->log_priority; +} + +/** + * udev_set_log_priority: + * @udev: udev library context + * @priority: the new logging priority + * + * Set the current logging priority. The value controls which messages + * are logged. + **/ +_public_ void udev_set_log_priority(struct udev *udev, int priority) +{ + char num[32]; + + udev->log_priority = priority; + snprintf(num, sizeof(num), "%u", udev->log_priority); + udev_add_property(udev, "UDEV_LOG", num); +} + +int udev_get_rules_path(struct udev *udev, char **path[], unsigned long long *stamp_usec[]) +{ + *path = udev->rules_path; + if (stamp_usec) + *stamp_usec = udev->rules_path_ts; + return udev->rules_path_count; +} + +/** + * udev_get_sys_path: + * @udev: udev library context + * + * Retrieve the sysfs mount point. The default is "/sys". For + * testing purposes, it can be overridden with udev_sys= + * in the udev configuration file. + * + * Returns: the sys mount point + **/ +_public_ const char *udev_get_sys_path(struct udev *udev) +{ + if (udev == NULL) + return NULL; + return udev->sys_path; +} + +/** + * udev_get_dev_path: + * @udev: udev library context + * + * Retrieve the device directory path. The default value is "/dev", + * the actual value may be overridden in the udev configuration + * file. + * + * Returns: the device directory path + **/ +_public_ const char *udev_get_dev_path(struct udev *udev) +{ + if (udev == NULL) + return NULL; + return udev->dev_path; +} + +/** + * udev_get_run_path: + * @udev: udev library context + * + * Retrieve the udev runtime directory path. The default is "/run/udev". + * + * Returns: the runtime directory path + **/ +_public_ const char *udev_get_run_path(struct udev *udev) +{ + if (udev == NULL) + return NULL; + return udev->run_path; +} + +struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value) +{ + if (value == NULL) { + struct udev_list_entry *list_entry; + + list_entry = udev_get_properties_list_entry(udev); + list_entry = udev_list_entry_get_by_name(list_entry, key); + if (list_entry != NULL) + udev_list_entry_delete(list_entry); + return NULL; + } + return udev_list_entry_add(&udev->properties_list, key, value); +} + +struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev) +{ + return udev_list_get_entry(&udev->properties_list); +} diff --git a/src/libudev/libudev.h b/src/libudev/libudev.h new file mode 100644 index 0000000000..3bcddb2eb3 --- /dev/null +++ b/src/libudev/libudev.h @@ -0,0 +1,188 @@ +/* + * libudev - interface to udev device information + * + * Copyright (C) 2008-2011 Kay Sievers + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + */ + +#ifndef _LIBUDEV_H_ +#define _LIBUDEV_H_ + +#include +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/* + * udev - library context + * + * reads the udev config and system environment + * allows custom logging + */ +struct udev; +struct udev *udev_ref(struct udev *udev); +void udev_unref(struct udev *udev); +struct udev *udev_new(void); +void udev_set_log_fn(struct udev *udev, + void (*log_fn)(struct udev *udev, + int priority, const char *file, int line, const char *fn, + const char *format, va_list args)); +int udev_get_log_priority(struct udev *udev); +void udev_set_log_priority(struct udev *udev, int priority); +const char *udev_get_sys_path(struct udev *udev); +const char *udev_get_dev_path(struct udev *udev); +const char *udev_get_run_path(struct udev *udev); +void *udev_get_userdata(struct udev *udev); +void udev_set_userdata(struct udev *udev, void *userdata); + +/* + * udev_list + * + * access to libudev generated lists + */ +struct udev_list_entry; +struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry); +struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name); +const char *udev_list_entry_get_name(struct udev_list_entry *list_entry); +const char *udev_list_entry_get_value(struct udev_list_entry *list_entry); +/** + * udev_list_entry_foreach: + * @list_entry: entry to store the current position + * @first_entry: first entry to start with + * + * Helper to iterate over all entries of a list. + */ +#define udev_list_entry_foreach(list_entry, first_entry) \ + for (list_entry = first_entry; \ + list_entry != NULL; \ + list_entry = udev_list_entry_get_next(list_entry)) + +/* + * udev_device + * + * access to sysfs/kernel devices + */ +struct udev_device; +struct udev_device *udev_device_ref(struct udev_device *udev_device); +void udev_device_unref(struct udev_device *udev_device); +struct udev *udev_device_get_udev(struct udev_device *udev_device); +struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath); +struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum); +struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname); +struct udev_device *udev_device_new_from_environment(struct udev *udev); +/* udev_device_get_parent_*() does not take a reference on the returned device, it is automatically unref'd with the parent */ +struct udev_device *udev_device_get_parent(struct udev_device *udev_device); +struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, + const char *subsystem, const char *devtype); +/* retrieve device properties */ +const char *udev_device_get_devpath(struct udev_device *udev_device); +const char *udev_device_get_subsystem(struct udev_device *udev_device); +const char *udev_device_get_devtype(struct udev_device *udev_device); +const char *udev_device_get_syspath(struct udev_device *udev_device); +const char *udev_device_get_sysname(struct udev_device *udev_device); +const char *udev_device_get_sysnum(struct udev_device *udev_device); +const char *udev_device_get_devnode(struct udev_device *udev_device); +int udev_device_get_is_initialized(struct udev_device *udev_device); +struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device); +struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device); +struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_device *udev_device); +struct udev_list_entry *udev_device_get_sysattr_list_entry(struct udev_device *udev_device); +const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key); +const char *udev_device_get_driver(struct udev_device *udev_device); +dev_t udev_device_get_devnum(struct udev_device *udev_device); +const char *udev_device_get_action(struct udev_device *udev_device); +unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device); +unsigned long long int udev_device_get_usec_since_initialized(struct udev_device *udev_device); +const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr); +int udev_device_has_tag(struct udev_device *udev_device, const char *tag); + +/* + * udev_monitor + * + * access to kernel uevents and udev events + */ +struct udev_monitor; +struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor); +void udev_monitor_unref(struct udev_monitor *udev_monitor); +struct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor); +/* kernel and udev generated events over netlink */ +struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name); +/* bind socket */ +int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor); +int udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_monitor, int size); +int udev_monitor_get_fd(struct udev_monitor *udev_monitor); +struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor); +/* in-kernel socket filters to select messages that get delivered to a listener */ +int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, + const char *subsystem, const char *devtype); +int udev_monitor_filter_add_match_tag(struct udev_monitor *udev_monitor, const char *tag); +int udev_monitor_filter_update(struct udev_monitor *udev_monitor); +int udev_monitor_filter_remove(struct udev_monitor *udev_monitor); +__attribute__((deprecated)) struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path); + +/* + * udev_enumerate + * + * search sysfs for specific devices and provide a sorted list + */ +struct udev_enumerate; +struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate); +void udev_enumerate_unref(struct udev_enumerate *udev_enumerate); +struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate); +struct udev_enumerate *udev_enumerate_new(struct udev *udev); +/* device properties filter */ +int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); +int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); +int udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); +int udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); +int udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value); +int udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname); +int udev_enumerate_add_match_tag(struct udev_enumerate *udev_enumerate, const char *tag); +int udev_enumerate_add_match_parent(struct udev_enumerate *udev_enumerate, struct udev_device *parent); +int udev_enumerate_add_match_is_initialized(struct udev_enumerate *udev_enumerate); +int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath); +/* run enumeration with active filters */ +int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate); +int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate); +/* return device list */ +struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate); + +/* + * udev_queue + * + * access to the currently running udev events + */ +struct udev_queue; +struct udev_queue *udev_queue_ref(struct udev_queue *udev_queue); +void udev_queue_unref(struct udev_queue *udev_queue); +struct udev *udev_queue_get_udev(struct udev_queue *udev_queue); +struct udev_queue *udev_queue_new(struct udev *udev); +unsigned long long int udev_queue_get_kernel_seqnum(struct udev_queue *udev_queue); +unsigned long long int udev_queue_get_udev_seqnum(struct udev_queue *udev_queue); +int udev_queue_get_udev_is_active(struct udev_queue *udev_queue); +int udev_queue_get_queue_is_empty(struct udev_queue *udev_queue); +int udev_queue_get_seqnum_is_finished(struct udev_queue *udev_queue, unsigned long long int seqnum); +int udev_queue_get_seqnum_sequence_is_finished(struct udev_queue *udev_queue, + unsigned long long int start, unsigned long long int end); +struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_queue *udev_queue); + +/* + * udev_util + * + * udev specific utilities + */ +int udev_util_encode_string(const char *str, char *str_enc, size_t len); + + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif diff --git a/src/libudev/libudev.pc.in b/src/libudev/libudev.pc.in new file mode 100644 index 0000000000..c9a47fc9b8 --- /dev/null +++ b/src/libudev/libudev.pc.in @@ -0,0 +1,11 @@ +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: libudev +Description: Library to access udev device information +Version: @VERSION@ +Libs: -L${libdir} -ludev -lrt +Libs.private: +Cflags: -I${includedir} diff --git a/src/udev/docs/.gitignore b/src/udev/docs/.gitignore deleted file mode 100644 index 1fb9c51424..0000000000 --- a/src/udev/docs/.gitignore +++ /dev/null @@ -1,18 +0,0 @@ -Makefile -libudev-overrides.txt -html/ -tmpl/ -xml/ -*.stamp -*.bak -version.xml -libudev-decl-list.txt -libudev-decl.txt -libudev-undeclared.txt -libudev-undocumented.txt -libudev-unused.txt -libudev.args -libudev.hierarchy -libudev.interfaces -libudev.prerequisites -libudev.signals diff --git a/src/udev/docs/Makefile.am b/src/udev/docs/Makefile.am deleted file mode 100644 index 7cd4f9742c..0000000000 --- a/src/udev/docs/Makefile.am +++ /dev/null @@ -1,99 +0,0 @@ -## Process this file with automake to produce Makefile.in - -# We require automake 1.10 at least. -AUTOMAKE_OPTIONS = 1.10 - -# This is a blank Makefile.am for using gtk-doc. -# Copy this to your project's API docs directory and modify the variables to -# suit your project. See the GTK+ Makefiles in gtk+/docs/reference for examples -# of using the various options. - -# The name of the module, e.g. 'glib'. -DOC_MODULE=libudev - -# Uncomment for versioned docs and specify the version of the module, e.g. '2'. -#DOC_MODULE_VERSION=2 - -# The top-level SGML file. You can change this if you want to. -DOC_MAIN_SGML_FILE=$(DOC_MODULE)-docs.xml - -# The directory containing the source code. Relative to $(srcdir). -# gtk-doc will search all .c & .h files beneath here for inline comments -# documenting the functions and macros. -# e.g. DOC_SOURCE_DIR=../../../gtk -DOC_SOURCE_DIR=$(top_srcdir)/src/udev - -# Extra options to pass to gtkdoc-scangobj. Not normally needed. -SCANGOBJ_OPTIONS= - -# Extra options to supply to gtkdoc-scan. -# e.g. SCAN_OPTIONS=--deprecated-guards="GTK_DISABLE_DEPRECATED" -SCAN_OPTIONS= - -# Extra options to supply to gtkdoc-mkdb. -# e.g. MKDB_OPTIONS=--sgml-mode --output-format=xml -MKDB_OPTIONS=--sgml-mode --output-format=xml --name-space udev - -# Extra options to supply to gtkdoc-mktmpl -# e.g. MKTMPL_OPTIONS=--only-section-tmpl -MKTMPL_OPTIONS= - -# Extra options to supply to gtkdoc-mkhtml -MKHTML_OPTIONS=--path=$(abs_srcdir) --path=$(abs_builddir) - -# Extra options to supply to gtkdoc-fixref. Not normally needed. -# e.g. FIXXREF_OPTIONS=--extra-dir=../gdk-pixbuf/html --extra-dir=../gdk/html -FIXXREF_OPTIONS= - -# Used for dependencies. The docs will be rebuilt if any of these change. -# e.g. HFILE_GLOB=$(top_srcdir)/gtk/*.h -# e.g. CFILE_GLOB=$(top_srcdir)/gtk/*.c -HFILE_GLOB=$(top_srcdir)/src/udev/libudev*.h -CFILE_GLOB=$(top_srcdir)/src/udev/libudev*.c - -# Extra header to include when scanning, which are not under DOC_SOURCE_DIR -# e.g. EXTRA_HFILES=$(top_srcdir}/contrib/extra.h -EXTRA_HFILES= - -# Header files to ignore when scanning. Use base file name, no paths -# e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h -IGNORE_HFILES= libudev-private.h - -# Images to copy into HTML directory. -# e.g. HTML_IMAGES=$(top_srcdir)/gtk/stock-icons/stock_about_24.png -HTML_IMAGES= - -# Extra SGML files that are included by $(DOC_MAIN_SGML_FILE). -# e.g. content_files=running.sgml building.sgml changes-2.0.sgml -content_files = version.xml - -# SGML files where gtk-doc abbrevations (#GtkWidget) are expanded -# These files must be listed here *and* in content_files -# e.g. expand_content_files=running.sgml -expand_content_files= - -# CFLAGS and LDFLAGS for compiling gtkdoc-scangobj with your library. -# Only needed if you are using gtkdoc-scangobj to dynamically query widget -# signals and properties. -# e.g. GTKDOC_CFLAGS=-I$(top_srcdir) -I$(top_builddir) $(GTK_DEBUG_FLAGS) -# e.g. GTKDOC_LIBS=$(top_builddir)/gtk/$(gtktargetlib) -GTKDOC_CFLAGS= -GTKDOC_LIBS= - -# This includes the standard gtk-doc make rules, copied by gtkdocize. -include $(top_srcdir)/gtk-doc.make - -# Other files to distribute -# e.g. EXTRA_DIST += version.xml.in -EXTRA_DIST += version.xml.in - -# Files not to distribute -# for --rebuild-types in $(SCAN_OPTIONS), e.g. $(DOC_MODULE).types -# for --rebuild-sections in $(SCAN_OPTIONS) e.g. $(DOC_MODULE)-sections.txt -#DISTCLEANFILES += - -# Comment this out if you want your docs-status tested during 'make check' -if ENABLE_GTK_DOC -#TESTS_ENVIRONMENT = cd $(srcsrc) -#TESTS = $(GTKDOC_CHECK) -endif diff --git a/src/udev/docs/libudev-docs.xml b/src/udev/docs/libudev-docs.xml deleted file mode 100644 index b7feb45529..0000000000 --- a/src/udev/docs/libudev-docs.xml +++ /dev/null @@ -1,32 +0,0 @@ - - -]> - - - libudev Reference Manual - for libudev version &version; - - 2009-2011 - Kay Sievers <kay.sievers@vrfy.org> - - - - - libudev - - - - - - - - - - - API Index - - - diff --git a/src/udev/docs/libudev-sections.txt b/src/udev/docs/libudev-sections.txt deleted file mode 100644 index 15c3e934b5..0000000000 --- a/src/udev/docs/libudev-sections.txt +++ /dev/null @@ -1,127 +0,0 @@ -
-libudev -udev -udev -udev_ref -udev_unref -udev_new -udev_set_log_fn -udev_get_log_priority -udev_set_log_priority -udev_get_sys_path -udev_get_dev_path -udev_get_run_path -udev_get_userdata -udev_set_userdata -
- -
-libudev-list -udev_list -udev_list_entry -udev_list_entry_get_next -udev_list_entry_get_by_name -udev_list_entry_get_name -udev_list_entry_get_value -udev_list_entry_foreach -
- -
-libudev-device -udev_device -udev_device -udev_device_ref -udev_device_unref -udev_device_get_udev -udev_device_new_from_syspath -udev_device_new_from_devnum -udev_device_new_from_subsystem_sysname -udev_device_new_from_environment -udev_device_get_parent -udev_device_get_parent_with_subsystem_devtype -udev_device_get_devpath -udev_device_get_subsystem -udev_device_get_devtype -udev_device_get_syspath -udev_device_get_sysname -udev_device_get_sysnum -udev_device_get_devnode -udev_device_get_is_initialized -udev_device_get_devlinks_list_entry -udev_device_get_properties_list_entry -udev_device_get_tags_list_entry -udev_device_get_property_value -udev_device_get_driver -udev_device_get_devnum -udev_device_get_action -udev_device_get_sysattr_value -udev_device_get_sysattr_list_entry -udev_device_get_seqnum -udev_device_get_usec_since_initialized -udev_device_has_tag -
- -
-libudev-monitor -udev_monitor -udev_monitor -udev_monitor_ref -udev_monitor_unref -udev_monitor_get_udev -udev_monitor_new_from_netlink -udev_monitor_new_from_socket -udev_monitor_enable_receiving -udev_monitor_set_receive_buffer_size -udev_monitor_get_fd -udev_monitor_receive_device -udev_monitor_filter_add_match_subsystem_devtype -udev_monitor_filter_add_match_tag -udev_monitor_filter_update -udev_monitor_filter_remove -
- -
-libudev-enumerate -udev_enumerate -udev_enumerate -udev_enumerate_ref -udev_enumerate_unref -udev_enumerate_get_udev -udev_enumerate_new -udev_enumerate_add_match_subsystem -udev_enumerate_add_nomatch_subsystem -udev_enumerate_add_match_sysattr -udev_enumerate_add_nomatch_sysattr -udev_enumerate_add_match_property -udev_enumerate_add_match_tag -udev_enumerate_add_match_parent -udev_enumerate_add_match_is_initialized -udev_enumerate_add_match_sysname -udev_enumerate_add_syspath -udev_enumerate_scan_devices -udev_enumerate_scan_subsystems -udev_enumerate_get_list_entry -
- -
-libudev-queue -udev_queue -udev_queue -udev_queue_ref -udev_queue_unref -udev_queue_get_udev -udev_queue_new -udev_queue_get_udev_is_active -udev_queue_get_queue_is_empty -udev_queue_get_seqnum_is_finished -udev_queue_get_seqnum_sequence_is_finished -udev_queue_get_queued_list_entry -udev_queue_get_kernel_seqnum -udev_queue_get_udev_seqnum -
- -
-libudev-util -udev_util -udev_util_encode_string -
diff --git a/src/udev/docs/libudev.types b/src/udev/docs/libudev.types deleted file mode 100644 index e69de29bb2..0000000000 diff --git a/src/udev/docs/version.xml.in b/src/udev/docs/version.xml.in deleted file mode 100644 index d78bda9342..0000000000 --- a/src/udev/docs/version.xml.in +++ /dev/null @@ -1 +0,0 @@ -@VERSION@ diff --git a/src/udev/gudev/.gitignore b/src/udev/gudev/.gitignore deleted file mode 100644 index d20fa523e4..0000000000 --- a/src/udev/gudev/.gitignore +++ /dev/null @@ -1,9 +0,0 @@ -gtk-doc.make -docs/version.xml -gudev-1.0.pc -gudevenumtypes.c -gudevenumtypes.h -gudevmarshal.c -gudevmarshal.h -GUdev-1.0.gir -GUdev-1.0.typelib diff --git a/src/udev/gudev/docs/.gitignore b/src/udev/gudev/docs/.gitignore deleted file mode 100644 index 5d7d73d9a6..0000000000 --- a/src/udev/gudev/docs/.gitignore +++ /dev/null @@ -1,17 +0,0 @@ -Makefile -gudev-overrides.txt -gudev-decl-list.txt -gudev-decl.txt -gudev-undeclared.txt -gudev-undocumented.txt -gudev-unused.txt -gudev.args -gudev.hierarchy -gudev.interfaces -gudev.prerequisites -gudev.signals -html.stamp -html/* -xml/* -tmpl/* -*.stamp diff --git a/src/udev/gudev/docs/Makefile.am b/src/udev/gudev/docs/Makefile.am deleted file mode 100644 index 036ef43026..0000000000 --- a/src/udev/gudev/docs/Makefile.am +++ /dev/null @@ -1,106 +0,0 @@ -## Process this file with automake to produce Makefile.in - -# We require automake 1.10 at least. -AUTOMAKE_OPTIONS = 1.10 - -# This is a blank Makefile.am for using gtk-doc. -# Copy this to your project's API docs directory and modify the variables to -# suit your project. See the GTK+ Makefiles in gtk+/docs/reference for examples -# of using the various options. - -# The name of the module, e.g. 'glib'. -DOC_MODULE=gudev - -# Uncomment for versioned docs and specify the version of the module, e.g. '2'. -#DOC_MODULE_VERSION=2 - -# The top-level SGML file. You can change this if you want to. -DOC_MAIN_SGML_FILE=$(DOC_MODULE)-docs.xml - -# The directory containing the source code. Relative to $(srcdir). -# gtk-doc will search all .c & .h files beneath here for inline comments -# documenting the functions and macros. -# e.g. DOC_SOURCE_DIR=../../../gtk -DOC_SOURCE_DIR=$(top_srcdir)/src/udev/gudev - -# Extra options to pass to gtkdoc-scangobj. Not normally needed. -SCANGOBJ_OPTIONS= - -# Extra options to supply to gtkdoc-scan. -# e.g. SCAN_OPTIONS=--deprecated-guards="GTK_DISABLE_DEPRECATED" -SCAN_OPTIONS= - -# Extra options to supply to gtkdoc-mkdb. -# e.g. MKDB_OPTIONS=--sgml-mode --output-format=xml -MKDB_OPTIONS=--sgml-mode --output-format=xml --name-space=g_udev - -# Extra options to supply to gtkdoc-mktmpl -# e.g. MKTMPL_OPTIONS=--only-section-tmpl -MKTMPL_OPTIONS= - -# Extra options to supply to gtkdoc-mkhtml -MKHTML_OPTIONS=--path=$(abs_srcdir) --path=$(abs_builddir) - -# Extra options to supply to gtkdoc-fixref. Not normally needed. -# e.g. FIXXREF_OPTIONS=--extra-dir=../gdk-pixbuf/html --extra-dir=../gdk/html -FIXXREF_OPTIONS= - -# Used for dependencies. The docs will be rebuilt if any of these change. -# e.g. HFILE_GLOB=$(top_srcdir)/gtk/*.h -# e.g. CFILE_GLOB=$(top_srcdir)/gtk/*.c -HFILE_GLOB=$(top_srcdir)/src/udev/gudev/*.h -CFILE_GLOB=$(top_srcdir)/src/udev/gudev/*.c - -# Extra header to include when scanning, which are not under DOC_SOURCE_DIR -# e.g. EXTRA_HFILES=$(top_srcdir}/contrib/extra.h -EXTRA_HFILES= - -# Header files to ignore when scanning. Use base file name, no paths -# e.g. IGNORE_HFILES=gtkdebug.h gtkintl.h -IGNORE_HFILES= - -# Images to copy into HTML directory. -# e.g. HTML_IMAGES=$(top_srcdir)/gtk/stock-icons/stock_about_24.png -HTML_IMAGES= - -# Extra SGML files that are included by $(DOC_MAIN_SGML_FILE). -# e.g. content_files=running.sgml building.sgml changes-2.0.sgml -content_files = version.xml - -# SGML files where gtk-doc abbrevations (#GtkWidget) are expanded -# These files must be listed here *and* in content_files -# e.g. expand_content_files=running.sgml -expand_content_files= - -# CFLAGS and LDFLAGS for compiling gtkdoc-scangobj with your library. -# Only needed if you are using gtkdoc-scangobj to dynamically query widget -# signals and properties. -# e.g. GTKDOC_CFLAGS=-I$(top_srcdir) -I$(top_builddir) $(GTK_DEBUG_FLAGS) -# e.g. GTKDOC_LIBS=$(top_builddir)/gtk/$(gtktargetlib) -GTKDOC_CFLAGS = \ - $(DBUS_GLIB_CFLAGS) \ - $(GLIB_CFLAGS) \ - -I$(top_srcdir)/src/udev/gudev \ - -I$(top_builddir)/src/udev/gudev - -GTKDOC_LIBS = \ - $(GLIB_LIBS) \ - $(top_builddir)/libgudev-1.0.la - -# This includes the standard gtk-doc make rules, copied by gtkdocize. -include $(top_srcdir)/gtk-doc.make - -# Other files to distribute -# e.g. EXTRA_DIST += version.xml.in -EXTRA_DIST += version.xml.in - -# Files not to distribute -# for --rebuild-types in $(SCAN_OPTIONS), e.g. $(DOC_MODULE).types -# for --rebuild-sections in $(SCAN_OPTIONS) e.g. $(DOC_MODULE)-sections.txt -#DISTCLEANFILES += - -# Comment this out if you want your docs-status tested during 'make check' -if ENABLE_GTK_DOC -#TESTS_ENVIRONMENT = cd $(srcsrc) -#TESTS = $(GTKDOC_CHECK) -endif diff --git a/src/udev/gudev/docs/gudev-docs.xml b/src/udev/gudev/docs/gudev-docs.xml deleted file mode 100644 index f876c3bc05..0000000000 --- a/src/udev/gudev/docs/gudev-docs.xml +++ /dev/null @@ -1,93 +0,0 @@ - - -]> - - - GUDev Reference Manual - For GUdev version &version; - - - David - Zeuthen - -
- davidz@redhat.com -
- - - - Bastien - Nocera - -
- hadess@hadess.net -
- - - - - - 2011 - The GUDev Authors - - - - - Permission is granted to copy, distribute and/or modify this - document under the terms of the GNU Free - Documentation License, Version 1.1 or any later - version published by the Free Software Foundation with no - Invariant Sections, no Front-Cover Texts, and no Back-Cover - Texts. You may obtain a copy of the GNU Free - Documentation License from the Free Software - Foundation by visiting their Web site or by writing - to: - -
- The Free Software Foundation, Inc., - 59 Temple Place - Suite 330, - Boston, MA 02111-1307, - USA -
- - - - Many of the names used by companies to distinguish their - products and services are claimed as trademarks. Where those - names appear in any freedesktop.org documentation, and those - trademarks are made aware to the members of the - freedesktop.org Project, the names have been printed in caps - or initial caps. - - - - - - API Reference - - - This part presents the class and function reference for the - libgudev library. - - - - - - - - - Object Hierarchy - - - - Index - - - Index of new symbols in 165 - - - - diff --git a/src/udev/gudev/docs/gudev-sections.txt b/src/udev/gudev/docs/gudev-sections.txt deleted file mode 100644 index 213e1a7465..0000000000 --- a/src/udev/gudev/docs/gudev-sections.txt +++ /dev/null @@ -1,113 +0,0 @@ -
-gudevclient -GUdevClient -GUdevClient -GUdevClientClass -GUdevDeviceType -GUdevDeviceNumber -g_udev_client_new -g_udev_client_query_by_subsystem -g_udev_client_query_by_device_number -g_udev_client_query_by_device_file -g_udev_client_query_by_sysfs_path -g_udev_client_query_by_subsystem_and_name - -G_UDEV_CLIENT -G_UDEV_IS_CLIENT -G_UDEV_TYPE_CLIENT -g_udev_client_get_type -G_UDEV_CLIENT_CLASS -G_UDEV_IS_CLIENT_CLASS -G_UDEV_CLIENT_GET_CLASS - -GUdevClientPrivate -
- -
-gudevdevice -GUdevDevice -GUdevDevice -GUdevDeviceClass -g_udev_device_get_subsystem -g_udev_device_get_devtype -g_udev_device_get_name -g_udev_device_get_number -g_udev_device_get_sysfs_path -g_udev_device_get_driver -g_udev_device_get_action -g_udev_device_get_seqnum -g_udev_device_get_device_type -g_udev_device_get_device_number -g_udev_device_get_device_file -g_udev_device_get_device_file_symlinks -g_udev_device_get_parent -g_udev_device_get_parent_with_subsystem -g_udev_device_get_tags -g_udev_device_get_is_initialized -g_udev_device_get_usec_since_initialized -g_udev_device_get_property_keys -g_udev_device_has_property -g_udev_device_get_property -g_udev_device_get_property_as_int -g_udev_device_get_property_as_uint64 -g_udev_device_get_property_as_double -g_udev_device_get_property_as_boolean -g_udev_device_get_property_as_strv -g_udev_device_get_sysfs_attr -g_udev_device_get_sysfs_attr_as_int -g_udev_device_get_sysfs_attr_as_uint64 -g_udev_device_get_sysfs_attr_as_double -g_udev_device_get_sysfs_attr_as_boolean -g_udev_device_get_sysfs_attr_as_strv - -G_UDEV_DEVICE -G_UDEV_IS_DEVICE -G_UDEV_TYPE_DEVICE -g_udev_device_get_type -G_UDEV_DEVICE_CLASS -G_UDEV_IS_DEVICE_CLASS -G_UDEV_DEVICE_GET_CLASS - -GUdevDevicePrivate -
- -
-gudevenumerator -GUdevEnumerator -GUdevEnumerator -GUdevEnumeratorClass -g_udev_enumerator_new -g_udev_enumerator_add_match_subsystem -g_udev_enumerator_add_nomatch_subsystem -g_udev_enumerator_add_match_sysfs_attr -g_udev_enumerator_add_nomatch_sysfs_attr -g_udev_enumerator_add_match_property -g_udev_enumerator_add_match_name -g_udev_enumerator_add_match_tag -g_udev_enumerator_add_match_is_initialized -g_udev_enumerator_add_sysfs_path -g_udev_enumerator_execute - -G_UDEV_ENUMERATOR -G_UDEV_IS_ENUMERATOR -G_UDEV_TYPE_ENUMERATOR -g_udev_enumerator_get_type -G_UDEV_ENUMERATOR_CLASS -G_UDEV_IS_ENUMERATOR_CLASS -G_UDEV_ENUMERATOR_GET_CLASS - -GUdevEnumeratorPrivate -
- -
-gudevmarshal - -g_udev_marshal_VOID__STRING_OBJECT -
- -
-gudevenumtypes - -G_TYPE_UDEV_DEVICE_TYPE -g_udev_device_type_get_type -
diff --git a/src/udev/gudev/docs/gudev.types b/src/udev/gudev/docs/gudev.types deleted file mode 100644 index a89857a04d..0000000000 --- a/src/udev/gudev/docs/gudev.types +++ /dev/null @@ -1,4 +0,0 @@ -g_udev_device_type_get_type -g_udev_device_get_type -g_udev_client_get_type -g_udev_enumerator_get_type diff --git a/src/udev/gudev/docs/version.xml.in b/src/udev/gudev/docs/version.xml.in deleted file mode 100644 index d78bda9342..0000000000 --- a/src/udev/gudev/docs/version.xml.in +++ /dev/null @@ -1 +0,0 @@ -@VERSION@ diff --git a/src/udev/gudev/gjs-example.js b/src/udev/gudev/gjs-example.js deleted file mode 100755 index 5586fd6a61..0000000000 --- a/src/udev/gudev/gjs-example.js +++ /dev/null @@ -1,75 +0,0 @@ -#!/usr/bin/env gjs-console - -// This currently depends on the following patches to gjs -// -// http://bugzilla.gnome.org/show_bug.cgi?id=584558 -// http://bugzilla.gnome.org/show_bug.cgi?id=584560 -// http://bugzilla.gnome.org/show_bug.cgi?id=584568 - -const GUdev = imports.gi.GUdev; -const Mainloop = imports.mainloop; - -function print_device (device) { - print (" subsystem: " + device.get_subsystem ()); - print (" devtype: " + device.get_devtype ()); - print (" name: " + device.get_name ()); - print (" number: " + device.get_number ()); - print (" sysfs_path: " + device.get_sysfs_path ()); - print (" driver: " + device.get_driver ()); - print (" action: " + device.get_action ()); - print (" seqnum: " + device.get_seqnum ()); - print (" device type: " + device.get_device_type ()); - print (" device number: " + device.get_device_number ()); - print (" device file: " + device.get_device_file ()); - print (" device file symlinks: " + device.get_device_file_symlinks ()); - print (" foo: " + device.get_sysfs_attr_as_strv ("stat")); - var keys = device.get_property_keys (); - for (var n = 0; n < keys.length; n++) { - print (" " + keys[n] + "=" + device.get_property (keys[n])); - } -} - -function on_uevent (client, action, device) { - print ("action " + action + " on device " + device.get_sysfs_path()); - print_device (device); - print (""); -} - -var client = new GUdev.Client ({subsystems: ["block", "usb/usb_interface"]}); -client.connect ("uevent", on_uevent); - -var block_devices = client.query_by_subsystem ("block"); -for (var n = 0; n < block_devices.length; n++) { - print ("block device: " + block_devices[n].get_device_file ()); -} - -var d; - -d = client.query_by_device_number (GUdev.DeviceType.BLOCK, 0x0810); -if (d == null) { - print ("query_by_device_number 0x810 -> null"); -} else { - print ("query_by_device_number 0x810 -> " + d.get_device_file ()); - var dd = d.get_parent_with_subsystem ("usb", null); - print_device (dd); - print ("--------------------------------------------------------------------------"); - while (d != null) { - print_device (d); - print (""); - d = d.get_parent (); - } -} - -d = client.query_by_sysfs_path ("/sys/block/sda/sda1"); -print ("query_by_sysfs_path (\"/sys/block/sda1\") -> " + d.get_device_file ()); - -d = client.query_by_subsystem_and_name ("block", "sda2"); -print ("query_by_subsystem_and_name (\"block\", \"sda2\") -> " + d.get_device_file ()); - -d = client.query_by_device_file ("/dev/sda"); -print ("query_by_device_file (\"/dev/sda\") -> " + d.get_device_file ()); - -d = client.query_by_device_file ("/dev/block/8:0"); -print ("query_by_device_file (\"/dev/block/8:0\") -> " + d.get_device_file ()); - -Mainloop.run('udev-example'); diff --git a/src/udev/gudev/gudev-1.0.pc.in b/src/udev/gudev/gudev-1.0.pc.in deleted file mode 100644 index 058262d767..0000000000 --- a/src/udev/gudev/gudev-1.0.pc.in +++ /dev/null @@ -1,11 +0,0 @@ -prefix=@prefix@ -exec_prefix=@exec_prefix@ -libdir=@libdir@ -includedir=@includedir@ - -Name: gudev-1.0 -Description: GObject bindings for libudev -Version: @VERSION@ -Requires: glib-2.0, gobject-2.0 -Libs: -L${libdir} -lgudev-1.0 -Cflags: -I${includedir}/gudev-1.0 diff --git a/src/udev/gudev/gudev.h b/src/udev/gudev/gudev.h deleted file mode 100644 index a313460817..0000000000 --- a/src/udev/gudev/gudev.h +++ /dev/null @@ -1,33 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#ifndef __G_UDEV_H__ -#define __G_UDEV_H__ - -#define _GUDEV_INSIDE_GUDEV_H 1 -#include -#include -#include -#include -#include -#include -#undef _GUDEV_INSIDE_GUDEV_H - -#endif /* __G_UDEV_H__ */ diff --git a/src/udev/gudev/gudevclient.c b/src/udev/gudev/gudevclient.c deleted file mode 100644 index 2b94102ac5..0000000000 --- a/src/udev/gudev/gudevclient.c +++ /dev/null @@ -1,527 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008-2010 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include -#include - -#include "gudevclient.h" -#include "gudevdevice.h" -#include "gudevmarshal.h" -#include "gudevprivate.h" - -/** - * SECTION:gudevclient - * @short_description: Query devices and listen to uevents - * - * #GUdevClient is used to query information about devices on a Linux - * system from the Linux kernel and the udev device - * manager. - * - * Device information is retrieved from the kernel (through the - * sysfs filesystem) and the udev daemon (through a - * tmpfs filesystem) and presented through - * #GUdevDevice objects. This means that no blocking IO ever happens - * (in both cases, we are essentially just reading data from kernel - * memory) and as such there are no asynchronous versions of the - * provided methods. - * - * To get #GUdevDevice objects, use - * g_udev_client_query_by_subsystem(), - * g_udev_client_query_by_device_number(), - * g_udev_client_query_by_device_file(), - * g_udev_client_query_by_sysfs_path(), - * g_udev_client_query_by_subsystem_and_name() - * or the #GUdevEnumerator type. - * - * To listen to uevents, connect to the #GUdevClient::uevent signal. - */ - -struct _GUdevClientPrivate -{ - GSource *watch_source; - struct udev *udev; - struct udev_monitor *monitor; - - gchar **subsystems; -}; - -enum -{ - PROP_0, - PROP_SUBSYSTEMS, -}; - -enum -{ - UEVENT_SIGNAL, - LAST_SIGNAL, -}; - -static guint signals[LAST_SIGNAL] = { 0 }; - -G_DEFINE_TYPE (GUdevClient, g_udev_client, G_TYPE_OBJECT) - -/* ---------------------------------------------------------------------------------------------------- */ - -static gboolean -monitor_event (GIOChannel *source, - GIOCondition condition, - gpointer data) -{ - GUdevClient *client = (GUdevClient *) data; - GUdevDevice *device; - struct udev_device *udevice; - - if (client->priv->monitor == NULL) - goto out; - udevice = udev_monitor_receive_device (client->priv->monitor); - if (udevice == NULL) - goto out; - - device = _g_udev_device_new (udevice); - udev_device_unref (udevice); - g_signal_emit (client, - signals[UEVENT_SIGNAL], - 0, - g_udev_device_get_action (device), - device); - g_object_unref (device); - - out: - return TRUE; -} - -static void -g_udev_client_finalize (GObject *object) -{ - GUdevClient *client = G_UDEV_CLIENT (object); - - if (client->priv->watch_source != NULL) - { - g_source_destroy (client->priv->watch_source); - client->priv->watch_source = NULL; - } - - if (client->priv->monitor != NULL) - { - udev_monitor_unref (client->priv->monitor); - client->priv->monitor = NULL; - } - - if (client->priv->udev != NULL) - { - udev_unref (client->priv->udev); - client->priv->udev = NULL; - } - - g_strfreev (client->priv->subsystems); - - if (G_OBJECT_CLASS (g_udev_client_parent_class)->finalize != NULL) - G_OBJECT_CLASS (g_udev_client_parent_class)->finalize (object); -} - -static void -g_udev_client_set_property (GObject *object, - guint prop_id, - const GValue *value, - GParamSpec *pspec) -{ - GUdevClient *client = G_UDEV_CLIENT (object); - - switch (prop_id) - { - case PROP_SUBSYSTEMS: - if (client->priv->subsystems != NULL) - g_strfreev (client->priv->subsystems); - client->priv->subsystems = g_strdupv (g_value_get_boxed (value)); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -g_udev_client_get_property (GObject *object, - guint prop_id, - GValue *value, - GParamSpec *pspec) -{ - GUdevClient *client = G_UDEV_CLIENT (object); - - switch (prop_id) - { - case PROP_SUBSYSTEMS: - g_value_set_boxed (value, client->priv->subsystems); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -g_udev_client_constructed (GObject *object) -{ - GUdevClient *client = G_UDEV_CLIENT (object); - GIOChannel *channel; - guint n; - - client->priv->udev = udev_new (); - - /* connect to event source */ - client->priv->monitor = udev_monitor_new_from_netlink (client->priv->udev, "udev"); - - //g_debug ("ss = %p", client->priv->subsystems); - - if (client->priv->subsystems != NULL) - { - /* install subsystem filters to only wake up for certain events */ - for (n = 0; client->priv->subsystems[n] != NULL; n++) - { - gchar *subsystem; - gchar *devtype; - gchar *s; - - subsystem = g_strdup (client->priv->subsystems[n]); - devtype = NULL; - - //g_debug ("s = '%s'", subsystem); - - s = strstr (subsystem, "/"); - if (s != NULL) - { - devtype = s + 1; - *s = '\0'; - } - - if (client->priv->monitor != NULL) - udev_monitor_filter_add_match_subsystem_devtype (client->priv->monitor, subsystem, devtype); - - g_free (subsystem); - } - - /* listen to events, and buffer them */ - if (client->priv->monitor != NULL) - { - udev_monitor_enable_receiving (client->priv->monitor); - channel = g_io_channel_unix_new (udev_monitor_get_fd (client->priv->monitor)); - client->priv->watch_source = g_io_create_watch (channel, G_IO_IN); - g_io_channel_unref (channel); - g_source_set_callback (client->priv->watch_source, (GSourceFunc) monitor_event, client, NULL); - g_source_attach (client->priv->watch_source, g_main_context_get_thread_default ()); - g_source_unref (client->priv->watch_source); - } - else - { - client->priv->watch_source = NULL; - } - } - - if (G_OBJECT_CLASS (g_udev_client_parent_class)->constructed != NULL) - G_OBJECT_CLASS (g_udev_client_parent_class)->constructed (object); -} - - -static void -g_udev_client_class_init (GUdevClientClass *klass) -{ - GObjectClass *gobject_class = (GObjectClass *) klass; - - gobject_class->constructed = g_udev_client_constructed; - gobject_class->set_property = g_udev_client_set_property; - gobject_class->get_property = g_udev_client_get_property; - gobject_class->finalize = g_udev_client_finalize; - - /** - * GUdevClient:subsystems: - * - * The subsystems to listen for uevents on. - * - * To listen for only a specific DEVTYPE for a given SUBSYSTEM, use - * "subsystem/devtype". For example, to only listen for uevents - * where SUBSYSTEM is usb and DEVTYPE is usb_interface, use - * "usb/usb_interface". - * - * If this property is %NULL, then no events will be reported. If - * it's the empty array, events from all subsystems will be - * reported. - */ - g_object_class_install_property (gobject_class, - PROP_SUBSYSTEMS, - g_param_spec_boxed ("subsystems", - "The subsystems to listen for changes on", - "The subsystems to listen for changes on", - G_TYPE_STRV, - G_PARAM_CONSTRUCT_ONLY | - G_PARAM_READWRITE)); - - /** - * GUdevClient::uevent: - * @client: The #GUdevClient receiving the event. - * @action: The action for the uevent e.g. "add", "remove", "change", "move", etc. - * @device: Details about the #GUdevDevice the event is for. - * - * Emitted when @client receives an uevent. - * - * This signal is emitted in the - * thread-default main loop - * of the thread that @client was created in. - */ - signals[UEVENT_SIGNAL] = g_signal_new ("uevent", - G_TYPE_FROM_CLASS (klass), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET (GUdevClientClass, uevent), - NULL, - NULL, - g_udev_marshal_VOID__STRING_OBJECT, - G_TYPE_NONE, - 2, - G_TYPE_STRING, - G_UDEV_TYPE_DEVICE); - - g_type_class_add_private (klass, sizeof (GUdevClientPrivate)); -} - -static void -g_udev_client_init (GUdevClient *client) -{ - client->priv = G_TYPE_INSTANCE_GET_PRIVATE (client, - G_UDEV_TYPE_CLIENT, - GUdevClientPrivate); -} - -/** - * g_udev_client_new: - * @subsystems: (array zero-terminated=1) (element-type utf8) (transfer none) (allow-none): A %NULL terminated string array of subsystems to listen for uevents on, %NULL to not listen on uevents at all, or an empty array to listen to uevents on all subsystems. See the documentation for the #GUdevClient:subsystems property for details on this parameter. - * - * Constructs a #GUdevClient object that can be used to query - * information about devices. Connect to the #GUdevClient::uevent - * signal to listen for uevents. Note that signals are emitted in the - * thread-default main loop - * of the thread that you call this constructor from. - * - * Returns: A new #GUdevClient object. Free with g_object_unref(). - */ -GUdevClient * -g_udev_client_new (const gchar * const *subsystems) -{ - return G_UDEV_CLIENT (g_object_new (G_UDEV_TYPE_CLIENT, "subsystems", subsystems, NULL)); -} - -/** - * g_udev_client_query_by_subsystem: - * @client: A #GUdevClient. - * @subsystem: (allow-none): The subsystem to get devices for or %NULL to get all devices. - * - * Gets all devices belonging to @subsystem. - * - * Returns: (element-type GUdevDevice) (transfer full): A list of #GUdevDevice objects. The caller should free the result by using g_object_unref() on each element in the list and then g_list_free() on the list. - */ -GList * -g_udev_client_query_by_subsystem (GUdevClient *client, - const gchar *subsystem) -{ - struct udev_enumerate *enumerate; - struct udev_list_entry *l, *devices; - GList *ret; - - g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); - - ret = NULL; - - /* prepare a device scan */ - enumerate = udev_enumerate_new (client->priv->udev); - - /* filter for subsystem */ - if (subsystem != NULL) - udev_enumerate_add_match_subsystem (enumerate, subsystem); - /* retrieve the list */ - udev_enumerate_scan_devices (enumerate); - - /* add devices to the list */ - devices = udev_enumerate_get_list_entry (enumerate); - for (l = devices; l != NULL; l = udev_list_entry_get_next (l)) - { - struct udev_device *udevice; - GUdevDevice *device; - - udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerate), - udev_list_entry_get_name (l)); - if (udevice == NULL) - continue; - device = _g_udev_device_new (udevice); - udev_device_unref (udevice); - ret = g_list_prepend (ret, device); - } - udev_enumerate_unref (enumerate); - - ret = g_list_reverse (ret); - - return ret; -} - -/** - * g_udev_client_query_by_device_number: - * @client: A #GUdevClient. - * @type: A value from the #GUdevDeviceType enumeration. - * @number: A device number. - * - * Looks up a device for a type and device number. - * - * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). - */ -GUdevDevice * -g_udev_client_query_by_device_number (GUdevClient *client, - GUdevDeviceType type, - GUdevDeviceNumber number) -{ - struct udev_device *udevice; - GUdevDevice *device; - - g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); - - device = NULL; - udevice = udev_device_new_from_devnum (client->priv->udev, type, number); - - if (udevice == NULL) - goto out; - - device = _g_udev_device_new (udevice); - udev_device_unref (udevice); - - out: - return device; -} - -/** - * g_udev_client_query_by_device_file: - * @client: A #GUdevClient. - * @device_file: A device file. - * - * Looks up a device for a device file. - * - * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). - */ -GUdevDevice * -g_udev_client_query_by_device_file (GUdevClient *client, - const gchar *device_file) -{ - struct stat stat_buf; - GUdevDevice *device; - - g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); - g_return_val_if_fail (device_file != NULL, NULL); - - device = NULL; - - if (stat (device_file, &stat_buf) != 0) - goto out; - - if (stat_buf.st_rdev == 0) - goto out; - - if (S_ISBLK (stat_buf.st_mode)) - device = g_udev_client_query_by_device_number (client, G_UDEV_DEVICE_TYPE_BLOCK, stat_buf.st_rdev); - else if (S_ISCHR (stat_buf.st_mode)) - device = g_udev_client_query_by_device_number (client, G_UDEV_DEVICE_TYPE_CHAR, stat_buf.st_rdev); - - out: - return device; -} - -/** - * g_udev_client_query_by_sysfs_path: - * @client: A #GUdevClient. - * @sysfs_path: A sysfs path. - * - * Looks up a device for a sysfs path. - * - * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). - */ -GUdevDevice * -g_udev_client_query_by_sysfs_path (GUdevClient *client, - const gchar *sysfs_path) -{ - struct udev_device *udevice; - GUdevDevice *device; - - g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); - g_return_val_if_fail (sysfs_path != NULL, NULL); - - device = NULL; - udevice = udev_device_new_from_syspath (client->priv->udev, sysfs_path); - if (udevice == NULL) - goto out; - - device = _g_udev_device_new (udevice); - udev_device_unref (udevice); - - out: - return device; -} - -/** - * g_udev_client_query_by_subsystem_and_name: - * @client: A #GUdevClient. - * @subsystem: A subsystem name. - * @name: The name of the device. - * - * Looks up a device for a subsystem and name. - * - * Returns: (transfer full): A #GUdevDevice object or %NULL if the device was not found. Free with g_object_unref(). - */ -GUdevDevice * -g_udev_client_query_by_subsystem_and_name (GUdevClient *client, - const gchar *subsystem, - const gchar *name) -{ - struct udev_device *udevice; - GUdevDevice *device; - - g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); - g_return_val_if_fail (subsystem != NULL, NULL); - g_return_val_if_fail (name != NULL, NULL); - - device = NULL; - udevice = udev_device_new_from_subsystem_sysname (client->priv->udev, subsystem, name); - if (udevice == NULL) - goto out; - - device = _g_udev_device_new (udevice); - udev_device_unref (udevice); - - out: - return device; -} - -struct udev * -_g_udev_client_get_udev (GUdevClient *client) -{ - g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); - return client->priv->udev; -} diff --git a/src/udev/gudev/gudevclient.h b/src/udev/gudev/gudevclient.h deleted file mode 100644 index b425d03d48..0000000000 --- a/src/udev/gudev/gudevclient.h +++ /dev/null @@ -1,100 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) -#error "Only can be included directly, this file may disappear or change contents." -#endif - -#ifndef __G_UDEV_CLIENT_H__ -#define __G_UDEV_CLIENT_H__ - -#include - -G_BEGIN_DECLS - -#define G_UDEV_TYPE_CLIENT (g_udev_client_get_type ()) -#define G_UDEV_CLIENT(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_UDEV_TYPE_CLIENT, GUdevClient)) -#define G_UDEV_CLIENT_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_UDEV_TYPE_CLIENT, GUdevClientClass)) -#define G_UDEV_IS_CLIENT(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_UDEV_TYPE_CLIENT)) -#define G_UDEV_IS_CLIENT_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_UDEV_TYPE_CLIENT)) -#define G_UDEV_CLIENT_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_UDEV_TYPE_CLIENT, GUdevClientClass)) - -typedef struct _GUdevClientClass GUdevClientClass; -typedef struct _GUdevClientPrivate GUdevClientPrivate; - -/** - * GUdevClient: - * - * The #GUdevClient struct is opaque and should not be accessed directly. - */ -struct _GUdevClient -{ - GObject parent; - - /*< private >*/ - GUdevClientPrivate *priv; -}; - -/** - * GUdevClientClass: - * @parent_class: Parent class. - * @uevent: Signal class handler for the #GUdevClient::uevent signal. - * - * Class structure for #GUdevClient. - */ -struct _GUdevClientClass -{ - GObjectClass parent_class; - - /* signals */ - void (*uevent) (GUdevClient *client, - const gchar *action, - GUdevDevice *device); - - /*< private >*/ - /* Padding for future expansion */ - void (*reserved1) (void); - void (*reserved2) (void); - void (*reserved3) (void); - void (*reserved4) (void); - void (*reserved5) (void); - void (*reserved6) (void); - void (*reserved7) (void); - void (*reserved8) (void); -}; - -GType g_udev_client_get_type (void) G_GNUC_CONST; -GUdevClient *g_udev_client_new (const gchar* const *subsystems); -GList *g_udev_client_query_by_subsystem (GUdevClient *client, - const gchar *subsystem); -GUdevDevice *g_udev_client_query_by_device_number (GUdevClient *client, - GUdevDeviceType type, - GUdevDeviceNumber number); -GUdevDevice *g_udev_client_query_by_device_file (GUdevClient *client, - const gchar *device_file); -GUdevDevice *g_udev_client_query_by_sysfs_path (GUdevClient *client, - const gchar *sysfs_path); -GUdevDevice *g_udev_client_query_by_subsystem_and_name (GUdevClient *client, - const gchar *subsystem, - const gchar *name); - -G_END_DECLS - -#endif /* __G_UDEV_CLIENT_H__ */ diff --git a/src/udev/gudev/gudevdevice.c b/src/udev/gudev/gudevdevice.c deleted file mode 100644 index 62a26f99b7..0000000000 --- a/src/udev/gudev/gudevdevice.c +++ /dev/null @@ -1,963 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include -#include - -#include "gudevdevice.h" -#include "gudevprivate.h" - -/** - * SECTION:gudevdevice - * @short_description: Get information about a device - * - * The #GUdevDevice class is used to get information about a specific - * device. Note that you cannot instantiate a #GUdevDevice object - * yourself. Instead you must use #GUdevClient to obtain #GUdevDevice - * objects. - * - * To get basic information about a device, use - * g_udev_device_get_subsystem(), g_udev_device_get_devtype(), - * g_udev_device_get_name(), g_udev_device_get_number(), - * g_udev_device_get_sysfs_path(), g_udev_device_get_driver(), - * g_udev_device_get_action(), g_udev_device_get_seqnum(), - * g_udev_device_get_device_type(), g_udev_device_get_device_number(), - * g_udev_device_get_device_file(), - * g_udev_device_get_device_file_symlinks(). - * - * To navigate the device tree, use g_udev_device_get_parent() and - * g_udev_device_get_parent_with_subsystem(). - * - * To access udev properties for the device, use - * g_udev_device_get_property_keys(), - * g_udev_device_has_property(), - * g_udev_device_get_property(), - * g_udev_device_get_property_as_int(), - * g_udev_device_get_property_as_uint64(), - * g_udev_device_get_property_as_double(), - * g_udev_device_get_property_as_boolean() and - * g_udev_device_get_property_as_strv(). - * - * To access sysfs attributes for the device, use - * g_udev_device_get_sysfs_attr(), - * g_udev_device_get_sysfs_attr_as_int(), - * g_udev_device_get_sysfs_attr_as_uint64(), - * g_udev_device_get_sysfs_attr_as_double(), - * g_udev_device_get_sysfs_attr_as_boolean() and - * g_udev_device_get_sysfs_attr_as_strv(). - * - * Note that all getters on #GUdevDevice are non-reffing – returned - * values are owned by the object, should not be freed and are only - * valid as long as the object is alive. - * - * By design, #GUdevDevice will not react to changes for a device – it - * only contains a snapshot of information when the #GUdevDevice - * object was created. To work with changes, you typically connect to - * the #GUdevClient::uevent signal on a #GUdevClient and get a new - * #GUdevDevice whenever an event happens. - */ - -struct _GUdevDevicePrivate -{ - struct udev_device *udevice; - - /* computed ondemand and cached */ - gchar **device_file_symlinks; - gchar **property_keys; - gchar **tags; - GHashTable *prop_strvs; - GHashTable *sysfs_attr_strvs; -}; - -G_DEFINE_TYPE (GUdevDevice, g_udev_device, G_TYPE_OBJECT) - -static void -g_udev_device_finalize (GObject *object) -{ - GUdevDevice *device = G_UDEV_DEVICE (object); - - g_strfreev (device->priv->device_file_symlinks); - g_strfreev (device->priv->property_keys); - g_strfreev (device->priv->tags); - - if (device->priv->udevice != NULL) - udev_device_unref (device->priv->udevice); - - if (device->priv->prop_strvs != NULL) - g_hash_table_unref (device->priv->prop_strvs); - - if (device->priv->sysfs_attr_strvs != NULL) - g_hash_table_unref (device->priv->sysfs_attr_strvs); - - if (G_OBJECT_CLASS (g_udev_device_parent_class)->finalize != NULL) - (* G_OBJECT_CLASS (g_udev_device_parent_class)->finalize) (object); -} - -static void -g_udev_device_class_init (GUdevDeviceClass *klass) -{ - GObjectClass *gobject_class = (GObjectClass *) klass; - - gobject_class->finalize = g_udev_device_finalize; - - g_type_class_add_private (klass, sizeof (GUdevDevicePrivate)); -} - -static void -g_udev_device_init (GUdevDevice *device) -{ - device->priv = G_TYPE_INSTANCE_GET_PRIVATE (device, - G_UDEV_TYPE_DEVICE, - GUdevDevicePrivate); -} - - -GUdevDevice * -_g_udev_device_new (struct udev_device *udevice) -{ - GUdevDevice *device; - - device = G_UDEV_DEVICE (g_object_new (G_UDEV_TYPE_DEVICE, NULL)); - device->priv->udevice = udev_device_ref (udevice); - - return device; -} - -/** - * g_udev_device_get_subsystem: - * @device: A #GUdevDevice. - * - * Gets the subsystem for @device. - * - * Returns: The subsystem for @device. - */ -const gchar * -g_udev_device_get_subsystem (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_subsystem (device->priv->udevice); -} - -/** - * g_udev_device_get_devtype: - * @device: A #GUdevDevice. - * - * Gets the device type for @device. - * - * Returns: The devtype for @device. - */ -const gchar * -g_udev_device_get_devtype (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_devtype (device->priv->udevice); -} - -/** - * g_udev_device_get_name: - * @device: A #GUdevDevice. - * - * Gets the name of @device, e.g. "sda3". - * - * Returns: The name of @device. - */ -const gchar * -g_udev_device_get_name (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_sysname (device->priv->udevice); -} - -/** - * g_udev_device_get_number: - * @device: A #GUdevDevice. - * - * Gets the number of @device, e.g. "3" if g_udev_device_get_name() returns "sda3". - * - * Returns: The number of @device. - */ -const gchar * -g_udev_device_get_number (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_sysnum (device->priv->udevice); -} - -/** - * g_udev_device_get_sysfs_path: - * @device: A #GUdevDevice. - * - * Gets the sysfs path for @device. - * - * Returns: The sysfs path for @device. - */ -const gchar * -g_udev_device_get_sysfs_path (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_syspath (device->priv->udevice); -} - -/** - * g_udev_device_get_driver: - * @device: A #GUdevDevice. - * - * Gets the name of the driver used for @device. - * - * Returns: The name of the driver for @device or %NULL if unknown. - */ -const gchar * -g_udev_device_get_driver (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_driver (device->priv->udevice); -} - -/** - * g_udev_device_get_action: - * @device: A #GUdevDevice. - * - * Gets the most recent action (e.g. "add", "remove", "change", etc.) for @device. - * - * Returns: An action string. - */ -const gchar * -g_udev_device_get_action (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_action (device->priv->udevice); -} - -/** - * g_udev_device_get_seqnum: - * @device: A #GUdevDevice. - * - * Gets the most recent sequence number for @device. - * - * Returns: A sequence number. - */ -guint64 -g_udev_device_get_seqnum (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); - return udev_device_get_seqnum (device->priv->udevice); -} - -/** - * g_udev_device_get_device_type: - * @device: A #GUdevDevice. - * - * Gets the type of the device file, if any, for @device. - * - * Returns: The device number for @device or #G_UDEV_DEVICE_TYPE_NONE if the device does not have a device file. - */ -GUdevDeviceType -g_udev_device_get_device_type (GUdevDevice *device) -{ - struct stat stat_buf; - const gchar *device_file; - GUdevDeviceType type; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), G_UDEV_DEVICE_TYPE_NONE); - - type = G_UDEV_DEVICE_TYPE_NONE; - - /* TODO: would be better to have support for this in libudev... */ - - device_file = g_udev_device_get_device_file (device); - if (device_file == NULL) - goto out; - - if (stat (device_file, &stat_buf) != 0) - goto out; - - if (S_ISBLK (stat_buf.st_mode)) - type = G_UDEV_DEVICE_TYPE_BLOCK; - else if (S_ISCHR (stat_buf.st_mode)) - type = G_UDEV_DEVICE_TYPE_CHAR; - - out: - return type; -} - -/** - * g_udev_device_get_device_number: - * @device: A #GUdevDevice. - * - * Gets the device number, if any, for @device. - * - * Returns: The device number for @device or 0 if unknown. - */ -GUdevDeviceNumber -g_udev_device_get_device_number (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); - return udev_device_get_devnum (device->priv->udevice); -} - -/** - * g_udev_device_get_device_file: - * @device: A #GUdevDevice. - * - * Gets the device file for @device. - * - * Returns: The device file for @device or %NULL if no device file - * exists. - */ -const gchar * -g_udev_device_get_device_file (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - return udev_device_get_devnode (device->priv->udevice); -} - -/** - * g_udev_device_get_device_file_symlinks: - * @device: A #GUdevDevice. - * - * Gets a list of symlinks (in /dev) that points to - * the device file for @device. - * - * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): A %NULL terminated string array of symlinks. This array is owned by @device and should not be freed by the caller. - */ -const gchar * const * -g_udev_device_get_device_file_symlinks (GUdevDevice *device) -{ - struct udev_list_entry *l; - GPtrArray *p; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - - if (device->priv->device_file_symlinks != NULL) - goto out; - - p = g_ptr_array_new (); - for (l = udev_device_get_devlinks_list_entry (device->priv->udevice); l != NULL; l = udev_list_entry_get_next (l)) - { - g_ptr_array_add (p, g_strdup (udev_list_entry_get_name (l))); - } - g_ptr_array_add (p, NULL); - device->priv->device_file_symlinks = (gchar **) g_ptr_array_free (p, FALSE); - - out: - return (const gchar * const *) device->priv->device_file_symlinks; -} - -/* ---------------------------------------------------------------------------------------------------- */ - -/** - * g_udev_device_get_parent: - * @device: A #GUdevDevice. - * - * Gets the immediate parent of @device, if any. - * - * Returns: (transfer full): A #GUdevDevice or %NULL if @device has no parent. Free with g_object_unref(). - */ -GUdevDevice * -g_udev_device_get_parent (GUdevDevice *device) -{ - GUdevDevice *ret; - struct udev_device *udevice; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - - ret = NULL; - - udevice = udev_device_get_parent (device->priv->udevice); - if (udevice == NULL) - goto out; - - ret = _g_udev_device_new (udevice); - - out: - return ret; -} - -/** - * g_udev_device_get_parent_with_subsystem: - * @device: A #GUdevDevice. - * @subsystem: The subsystem of the parent to get. - * @devtype: (allow-none): The devtype of the parent to get or %NULL. - * - * Walks up the chain of parents of @device and returns the first - * device encountered where @subsystem and @devtype matches, if any. - * - * Returns: (transfer full): A #GUdevDevice or %NULL if @device has no parent with @subsystem and @devtype. Free with g_object_unref(). - */ -GUdevDevice * -g_udev_device_get_parent_with_subsystem (GUdevDevice *device, - const gchar *subsystem, - const gchar *devtype) -{ - GUdevDevice *ret; - struct udev_device *udevice; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - g_return_val_if_fail (subsystem != NULL, NULL); - - ret = NULL; - - udevice = udev_device_get_parent_with_subsystem_devtype (device->priv->udevice, - subsystem, - devtype); - if (udevice == NULL) - goto out; - - ret = _g_udev_device_new (udevice); - - out: - return ret; -} - -/* ---------------------------------------------------------------------------------------------------- */ - -/** - * g_udev_device_get_property_keys: - * @device: A #GUdevDevice. - * - * Gets all keys for properties on @device. - * - * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): A %NULL terminated string array of property keys. This array is owned by @device and should not be freed by the caller. - */ -const gchar* const * -g_udev_device_get_property_keys (GUdevDevice *device) -{ - struct udev_list_entry *l; - GPtrArray *p; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - - if (device->priv->property_keys != NULL) - goto out; - - p = g_ptr_array_new (); - for (l = udev_device_get_properties_list_entry (device->priv->udevice); l != NULL; l = udev_list_entry_get_next (l)) - { - g_ptr_array_add (p, g_strdup (udev_list_entry_get_name (l))); - } - g_ptr_array_add (p, NULL); - device->priv->property_keys = (gchar **) g_ptr_array_free (p, FALSE); - - out: - return (const gchar * const *) device->priv->property_keys; -} - - -/** - * g_udev_device_has_property: - * @device: A #GUdevDevice. - * @key: Name of property. - * - * Check if a the property with the given key exists. - * - * Returns: %TRUE only if the value for @key exist. - */ -gboolean -g_udev_device_has_property (GUdevDevice *device, - const gchar *key) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); - g_return_val_if_fail (key != NULL, FALSE); - return udev_device_get_property_value (device->priv->udevice, key) != NULL; -} - -/** - * g_udev_device_get_property: - * @device: A #GUdevDevice. - * @key: Name of property. - * - * Look up the value for @key on @device. - * - * Returns: The value for @key or %NULL if @key doesn't exist on @device. Do not free this string, it is owned by @device. - */ -const gchar * -g_udev_device_get_property (GUdevDevice *device, - const gchar *key) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - g_return_val_if_fail (key != NULL, NULL); - return udev_device_get_property_value (device->priv->udevice, key); -} - -/** - * g_udev_device_get_property_as_int: - * @device: A #GUdevDevice. - * @key: Name of property. - * - * Look up the value for @key on @device and convert it to an integer - * using strtol(). - * - * Returns: The value for @key or 0 if @key doesn't exist or - * isn't an integer. - */ -gint -g_udev_device_get_property_as_int (GUdevDevice *device, - const gchar *key) -{ - gint result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); - g_return_val_if_fail (key != NULL, 0); - - result = 0; - s = g_udev_device_get_property (device, key); - if (s == NULL) - goto out; - - result = strtol (s, NULL, 0); -out: - return result; -} - -/** - * g_udev_device_get_property_as_uint64: - * @device: A #GUdevDevice. - * @key: Name of property. - * - * Look up the value for @key on @device and convert it to an unsigned - * 64-bit integer using g_ascii_strtoull(). - * - * Returns: The value for @key or 0 if @key doesn't exist or isn't a - * #guint64. - */ -guint64 -g_udev_device_get_property_as_uint64 (GUdevDevice *device, - const gchar *key) -{ - guint64 result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); - g_return_val_if_fail (key != NULL, 0); - - result = 0; - s = g_udev_device_get_property (device, key); - if (s == NULL) - goto out; - - result = g_ascii_strtoull (s, NULL, 0); -out: - return result; -} - -/** - * g_udev_device_get_property_as_double: - * @device: A #GUdevDevice. - * @key: Name of property. - * - * Look up the value for @key on @device and convert it to a double - * precision floating point number using strtod(). - * - * Returns: The value for @key or 0.0 if @key doesn't exist or isn't a - * #gdouble. - */ -gdouble -g_udev_device_get_property_as_double (GUdevDevice *device, - const gchar *key) -{ - gdouble result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0.0); - g_return_val_if_fail (key != NULL, 0.0); - - result = 0.0; - s = g_udev_device_get_property (device, key); - if (s == NULL) - goto out; - - result = strtod (s, NULL); -out: - return result; -} - -/** - * g_udev_device_get_property_as_boolean: - * @device: A #GUdevDevice. - * @key: Name of property. - * - * Look up the value for @key on @device and convert it to an - * boolean. This is done by doing a case-insensitive string comparison - * on the string value against "1" and "true". - * - * Returns: The value for @key or %FALSE if @key doesn't exist or - * isn't a #gboolean. - */ -gboolean -g_udev_device_get_property_as_boolean (GUdevDevice *device, - const gchar *key) -{ - gboolean result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); - g_return_val_if_fail (key != NULL, FALSE); - - result = FALSE; - s = g_udev_device_get_property (device, key); - if (s == NULL) - goto out; - - if (strcmp (s, "1") == 0 || g_ascii_strcasecmp (s, "true") == 0) - result = TRUE; - out: - return result; -} - -static gchar ** -split_at_whitespace (const gchar *s) -{ - gchar **result; - guint n; - guint m; - - result = g_strsplit_set (s, " \v\t\r\n", 0); - - /* remove empty strings, thanks GLib */ - for (n = 0; result[n] != NULL; n++) - { - if (strlen (result[n]) == 0) - { - g_free (result[n]); - for (m = n; result[m] != NULL; m++) - result[m] = result[m + 1]; - n--; - } - } - - return result; -} - -/** - * g_udev_device_get_property_as_strv: - * @device: A #GUdevDevice. - * @key: Name of property. - * - * Look up the value for @key on @device and return the result of - * splitting it into non-empty tokens split at white space (only space - * (' '), form-feed ('\f'), newline ('\n'), carriage return ('\r'), - * horizontal tab ('\t'), and vertical tab ('\v') are considered; the - * locale is not taken into account). - * - * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): The value of @key on @device split into tokens or %NULL if @key doesn't exist. This array is owned by @device and should not be freed by the caller. - */ -const gchar* const * -g_udev_device_get_property_as_strv (GUdevDevice *device, - const gchar *key) -{ - gchar **result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - g_return_val_if_fail (key != NULL, NULL); - - if (device->priv->prop_strvs != NULL) - { - result = g_hash_table_lookup (device->priv->prop_strvs, key); - if (result != NULL) - goto out; - } - - result = NULL; - s = g_udev_device_get_property (device, key); - if (s == NULL) - goto out; - - result = split_at_whitespace (s); - if (result == NULL) - goto out; - - if (device->priv->prop_strvs == NULL) - device->priv->prop_strvs = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_strfreev); - g_hash_table_insert (device->priv->prop_strvs, g_strdup (key), result); - -out: - return (const gchar* const *) result; -} - -/* ---------------------------------------------------------------------------------------------------- */ - -/** - * g_udev_device_get_sysfs_attr: - * @device: A #GUdevDevice. - * @name: Name of the sysfs attribute. - * - * Look up the sysfs attribute with @name on @device. - * - * Returns: The value of the sysfs attribute or %NULL if there is no - * such attribute. Do not free this string, it is owned by @device. - */ -const gchar * -g_udev_device_get_sysfs_attr (GUdevDevice *device, - const gchar *name) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - g_return_val_if_fail (name != NULL, NULL); - return udev_device_get_sysattr_value (device->priv->udevice, name); -} - -/** - * g_udev_device_get_sysfs_attr_as_int: - * @device: A #GUdevDevice. - * @name: Name of the sysfs attribute. - * - * Look up the sysfs attribute with @name on @device and convert it to an integer - * using strtol(). - * - * Returns: The value of the sysfs attribute or 0 if there is no such - * attribute. - */ -gint -g_udev_device_get_sysfs_attr_as_int (GUdevDevice *device, - const gchar *name) -{ - gint result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); - g_return_val_if_fail (name != NULL, 0); - - result = 0; - s = g_udev_device_get_sysfs_attr (device, name); - if (s == NULL) - goto out; - - result = strtol (s, NULL, 0); -out: - return result; -} - -/** - * g_udev_device_get_sysfs_attr_as_uint64: - * @device: A #GUdevDevice. - * @name: Name of the sysfs attribute. - * - * Look up the sysfs attribute with @name on @device and convert it to an unsigned - * 64-bit integer using g_ascii_strtoull(). - * - * Returns: The value of the sysfs attribute or 0 if there is no such - * attribute. - */ -guint64 -g_udev_device_get_sysfs_attr_as_uint64 (GUdevDevice *device, - const gchar *name) -{ - guint64 result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); - g_return_val_if_fail (name != NULL, 0); - - result = 0; - s = g_udev_device_get_sysfs_attr (device, name); - if (s == NULL) - goto out; - - result = g_ascii_strtoull (s, NULL, 0); -out: - return result; -} - -/** - * g_udev_device_get_sysfs_attr_as_double: - * @device: A #GUdevDevice. - * @name: Name of the sysfs attribute. - * - * Look up the sysfs attribute with @name on @device and convert it to a double - * precision floating point number using strtod(). - * - * Returns: The value of the sysfs attribute or 0.0 if there is no such - * attribute. - */ -gdouble -g_udev_device_get_sysfs_attr_as_double (GUdevDevice *device, - const gchar *name) -{ - gdouble result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0.0); - g_return_val_if_fail (name != NULL, 0.0); - - result = 0.0; - s = g_udev_device_get_sysfs_attr (device, name); - if (s == NULL) - goto out; - - result = strtod (s, NULL); -out: - return result; -} - -/** - * g_udev_device_get_sysfs_attr_as_boolean: - * @device: A #GUdevDevice. - * @name: Name of the sysfs attribute. - * - * Look up the sysfs attribute with @name on @device and convert it to an - * boolean. This is done by doing a case-insensitive string comparison - * on the string value against "1" and "true". - * - * Returns: The value of the sysfs attribute or %FALSE if there is no such - * attribute. - */ -gboolean -g_udev_device_get_sysfs_attr_as_boolean (GUdevDevice *device, - const gchar *name) -{ - gboolean result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); - g_return_val_if_fail (name != NULL, FALSE); - - result = FALSE; - s = g_udev_device_get_sysfs_attr (device, name); - if (s == NULL) - goto out; - - if (strcmp (s, "1") == 0 || g_ascii_strcasecmp (s, "true") == 0) - result = TRUE; - out: - return result; -} - -/** - * g_udev_device_get_sysfs_attr_as_strv: - * @device: A #GUdevDevice. - * @name: Name of the sysfs attribute. - * - * Look up the sysfs attribute with @name on @device and return the result of - * splitting it into non-empty tokens split at white space (only space (' '), - * form-feed ('\f'), newline ('\n'), carriage return ('\r'), horizontal - * tab ('\t'), and vertical tab ('\v') are considered; the locale is - * not taken into account). - * - * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): The value of the sysfs attribute split into tokens or %NULL if there is no such attribute. This array is owned by @device and should not be freed by the caller. - */ -const gchar * const * -g_udev_device_get_sysfs_attr_as_strv (GUdevDevice *device, - const gchar *name) -{ - gchar **result; - const gchar *s; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - g_return_val_if_fail (name != NULL, NULL); - - if (device->priv->sysfs_attr_strvs != NULL) - { - result = g_hash_table_lookup (device->priv->sysfs_attr_strvs, name); - if (result != NULL) - goto out; - } - - result = NULL; - s = g_udev_device_get_sysfs_attr (device, name); - if (s == NULL) - goto out; - - result = split_at_whitespace (s); - if (result == NULL) - goto out; - - if (device->priv->sysfs_attr_strvs == NULL) - device->priv->sysfs_attr_strvs = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, (GDestroyNotify) g_strfreev); - g_hash_table_insert (device->priv->sysfs_attr_strvs, g_strdup (name), result); - -out: - return (const gchar* const *) result; -} - -/** - * g_udev_device_get_tags: - * @device: A #GUdevDevice. - * - * Gets all tags for @device. - * - * Returns: (transfer none) (array zero-terminated=1) (element-type utf8): A %NULL terminated string array of tags. This array is owned by @device and should not be freed by the caller. - * - * Since: 165 - */ -const gchar* const * -g_udev_device_get_tags (GUdevDevice *device) -{ - struct udev_list_entry *l; - GPtrArray *p; - - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), NULL); - - if (device->priv->tags != NULL) - goto out; - - p = g_ptr_array_new (); - for (l = udev_device_get_tags_list_entry (device->priv->udevice); l != NULL; l = udev_list_entry_get_next (l)) - { - g_ptr_array_add (p, g_strdup (udev_list_entry_get_name (l))); - } - g_ptr_array_add (p, NULL); - device->priv->tags = (gchar **) g_ptr_array_free (p, FALSE); - - out: - return (const gchar * const *) device->priv->tags; -} - -/** - * g_udev_device_get_is_initialized: - * @device: A #GUdevDevice. - * - * Gets whether @device has been initalized. - * - * Returns: Whether @device has been initialized. - * - * Since: 165 - */ -gboolean -g_udev_device_get_is_initialized (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), FALSE); - return udev_device_get_is_initialized (device->priv->udevice); -} - -/** - * g_udev_device_get_usec_since_initialized: - * @device: A #GUdevDevice. - * - * Gets number of micro-seconds since @device was initialized. - * - * This only works for devices with properties in the udev - * database. All other devices return 0. - * - * Returns: Number of micro-seconds since @device was initialized or 0 if unknown. - * - * Since: 165 - */ -guint64 -g_udev_device_get_usec_since_initialized (GUdevDevice *device) -{ - g_return_val_if_fail (G_UDEV_IS_DEVICE (device), 0); - return udev_device_get_usec_since_initialized (device->priv->udevice); -} diff --git a/src/udev/gudev/gudevdevice.h b/src/udev/gudev/gudevdevice.h deleted file mode 100644 index d4873bad0f..0000000000 --- a/src/udev/gudev/gudevdevice.h +++ /dev/null @@ -1,128 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) -#error "Only can be included directly, this file may disappear or change contents." -#endif - -#ifndef __G_UDEV_DEVICE_H__ -#define __G_UDEV_DEVICE_H__ - -#include - -G_BEGIN_DECLS - -#define G_UDEV_TYPE_DEVICE (g_udev_device_get_type ()) -#define G_UDEV_DEVICE(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_UDEV_TYPE_DEVICE, GUdevDevice)) -#define G_UDEV_DEVICE_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_UDEV_TYPE_DEVICE, GUdevDeviceClass)) -#define G_UDEV_IS_DEVICE(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_UDEV_TYPE_DEVICE)) -#define G_UDEV_IS_DEVICE_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_UDEV_TYPE_DEVICE)) -#define G_UDEV_DEVICE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_UDEV_TYPE_DEVICE, GUdevDeviceClass)) - -typedef struct _GUdevDeviceClass GUdevDeviceClass; -typedef struct _GUdevDevicePrivate GUdevDevicePrivate; - -/** - * GUdevDevice: - * - * The #GUdevDevice struct is opaque and should not be accessed directly. - */ -struct _GUdevDevice -{ - GObject parent; - - /*< private >*/ - GUdevDevicePrivate *priv; -}; - -/** - * GUdevDeviceClass: - * @parent_class: Parent class. - * - * Class structure for #GUdevDevice. - */ -struct _GUdevDeviceClass -{ - GObjectClass parent_class; - - /*< private >*/ - /* Padding for future expansion */ - void (*reserved1) (void); - void (*reserved2) (void); - void (*reserved3) (void); - void (*reserved4) (void); - void (*reserved5) (void); - void (*reserved6) (void); - void (*reserved7) (void); - void (*reserved8) (void); -}; - -GType g_udev_device_get_type (void) G_GNUC_CONST; -gboolean g_udev_device_get_is_initialized (GUdevDevice *device); -guint64 g_udev_device_get_usec_since_initialized (GUdevDevice *device); -const gchar *g_udev_device_get_subsystem (GUdevDevice *device); -const gchar *g_udev_device_get_devtype (GUdevDevice *device); -const gchar *g_udev_device_get_name (GUdevDevice *device); -const gchar *g_udev_device_get_number (GUdevDevice *device); -const gchar *g_udev_device_get_sysfs_path (GUdevDevice *device); -const gchar *g_udev_device_get_driver (GUdevDevice *device); -const gchar *g_udev_device_get_action (GUdevDevice *device); -guint64 g_udev_device_get_seqnum (GUdevDevice *device); -GUdevDeviceType g_udev_device_get_device_type (GUdevDevice *device); -GUdevDeviceNumber g_udev_device_get_device_number (GUdevDevice *device); -const gchar *g_udev_device_get_device_file (GUdevDevice *device); -const gchar* const *g_udev_device_get_device_file_symlinks (GUdevDevice *device); -GUdevDevice *g_udev_device_get_parent (GUdevDevice *device); -GUdevDevice *g_udev_device_get_parent_with_subsystem (GUdevDevice *device, - const gchar *subsystem, - const gchar *devtype); -const gchar* const *g_udev_device_get_property_keys (GUdevDevice *device); -gboolean g_udev_device_has_property (GUdevDevice *device, - const gchar *key); -const gchar *g_udev_device_get_property (GUdevDevice *device, - const gchar *key); -gint g_udev_device_get_property_as_int (GUdevDevice *device, - const gchar *key); -guint64 g_udev_device_get_property_as_uint64 (GUdevDevice *device, - const gchar *key); -gdouble g_udev_device_get_property_as_double (GUdevDevice *device, - const gchar *key); -gboolean g_udev_device_get_property_as_boolean (GUdevDevice *device, - const gchar *key); -const gchar* const *g_udev_device_get_property_as_strv (GUdevDevice *device, - const gchar *key); - -const gchar *g_udev_device_get_sysfs_attr (GUdevDevice *device, - const gchar *name); -gint g_udev_device_get_sysfs_attr_as_int (GUdevDevice *device, - const gchar *name); -guint64 g_udev_device_get_sysfs_attr_as_uint64 (GUdevDevice *device, - const gchar *name); -gdouble g_udev_device_get_sysfs_attr_as_double (GUdevDevice *device, - const gchar *name); -gboolean g_udev_device_get_sysfs_attr_as_boolean (GUdevDevice *device, - const gchar *name); -const gchar* const *g_udev_device_get_sysfs_attr_as_strv (GUdevDevice *device, - const gchar *name); -const gchar* const *g_udev_device_get_tags (GUdevDevice *device); - -G_END_DECLS - -#endif /* __G_UDEV_DEVICE_H__ */ diff --git a/src/udev/gudev/gudevenumerator.c b/src/udev/gudev/gudevenumerator.c deleted file mode 100644 index db09074625..0000000000 --- a/src/udev/gudev/gudevenumerator.c +++ /dev/null @@ -1,431 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008-2010 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - * - */ - -#ifdef HAVE_CONFIG_H -# include "config.h" -#endif - -#include -#include - -#include "gudevclient.h" -#include "gudevenumerator.h" -#include "gudevdevice.h" -#include "gudevmarshal.h" -#include "gudevprivate.h" - -/** - * SECTION:gudevenumerator - * @short_description: Lookup and sort devices - * - * #GUdevEnumerator is used to lookup and sort devices. - * - * Since: 165 - */ - -struct _GUdevEnumeratorPrivate -{ - GUdevClient *client; - struct udev_enumerate *e; -}; - -enum -{ - PROP_0, - PROP_CLIENT, -}; - -G_DEFINE_TYPE (GUdevEnumerator, g_udev_enumerator, G_TYPE_OBJECT) - -/* ---------------------------------------------------------------------------------------------------- */ - -static void -g_udev_enumerator_finalize (GObject *object) -{ - GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); - - if (enumerator->priv->client != NULL) - { - g_object_unref (enumerator->priv->client); - enumerator->priv->client = NULL; - } - - if (enumerator->priv->e != NULL) - { - udev_enumerate_unref (enumerator->priv->e); - enumerator->priv->e = NULL; - } - - if (G_OBJECT_CLASS (g_udev_enumerator_parent_class)->finalize != NULL) - G_OBJECT_CLASS (g_udev_enumerator_parent_class)->finalize (object); -} - -static void -g_udev_enumerator_set_property (GObject *object, - guint prop_id, - const GValue *value, - GParamSpec *pspec) -{ - GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); - - switch (prop_id) - { - case PROP_CLIENT: - if (enumerator->priv->client != NULL) - g_object_unref (enumerator->priv->client); - enumerator->priv->client = g_value_dup_object (value); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -g_udev_enumerator_get_property (GObject *object, - guint prop_id, - GValue *value, - GParamSpec *pspec) -{ - GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); - - switch (prop_id) - { - case PROP_CLIENT: - g_value_set_object (value, enumerator->priv->client); - break; - - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -static void -g_udev_enumerator_constructed (GObject *object) -{ - GUdevEnumerator *enumerator = G_UDEV_ENUMERATOR (object); - - g_assert (G_UDEV_IS_CLIENT (enumerator->priv->client)); - - enumerator->priv->e = udev_enumerate_new (_g_udev_client_get_udev (enumerator->priv->client)); - - if (G_OBJECT_CLASS (g_udev_enumerator_parent_class)->constructed != NULL) - G_OBJECT_CLASS (g_udev_enumerator_parent_class)->constructed (object); -} - -static void -g_udev_enumerator_class_init (GUdevEnumeratorClass *klass) -{ - GObjectClass *gobject_class = (GObjectClass *) klass; - - gobject_class->finalize = g_udev_enumerator_finalize; - gobject_class->set_property = g_udev_enumerator_set_property; - gobject_class->get_property = g_udev_enumerator_get_property; - gobject_class->constructed = g_udev_enumerator_constructed; - - /** - * GUdevEnumerator:client: - * - * The #GUdevClient to enumerate devices from. - * - * Since: 165 - */ - g_object_class_install_property (gobject_class, - PROP_CLIENT, - g_param_spec_object ("client", - "The client to enumerate devices from", - "The client to enumerate devices from", - G_UDEV_TYPE_CLIENT, - G_PARAM_CONSTRUCT_ONLY | - G_PARAM_READWRITE)); - - g_type_class_add_private (klass, sizeof (GUdevEnumeratorPrivate)); -} - -static void -g_udev_enumerator_init (GUdevEnumerator *enumerator) -{ - enumerator->priv = G_TYPE_INSTANCE_GET_PRIVATE (enumerator, - G_UDEV_TYPE_ENUMERATOR, - GUdevEnumeratorPrivate); -} - -/** - * g_udev_enumerator_new: - * @client: A #GUdevClient to enumerate devices from. - * - * Constructs a #GUdevEnumerator object that can be used to enumerate - * and sort devices. Use the add_match_*() and add_nomatch_*() methods - * and execute the query to get a list of devices with - * g_udev_enumerator_execute(). - * - * Returns: A new #GUdevEnumerator object. Free with g_object_unref(). - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_new (GUdevClient *client) -{ - g_return_val_if_fail (G_UDEV_IS_CLIENT (client), NULL); - return G_UDEV_ENUMERATOR (g_object_new (G_UDEV_TYPE_ENUMERATOR, "client", client, NULL)); -} - - -/** - * g_udev_enumerator_add_match_subsystem: - * @enumerator: A #GUdevEnumerator. - * @subsystem: Wildcard for subsystem name e.g. 'scsi' or 'a*'. - * - * All returned devices will match the given @subsystem. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_match_subsystem (GUdevEnumerator *enumerator, - const gchar *subsystem) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (subsystem != NULL, NULL); - udev_enumerate_add_match_subsystem (enumerator->priv->e, subsystem); - return enumerator; -} - -/** - * g_udev_enumerator_add_nomatch_subsystem: - * @enumerator: A #GUdevEnumerator. - * @subsystem: Wildcard for subsystem name e.g. 'scsi' or 'a*'. - * - * All returned devices will not match the given @subsystem. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_nomatch_subsystem (GUdevEnumerator *enumerator, - const gchar *subsystem) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (subsystem != NULL, NULL); - udev_enumerate_add_nomatch_subsystem (enumerator->priv->e, subsystem); - return enumerator; -} - -/** - * g_udev_enumerator_add_match_sysfs_attr: - * @enumerator: A #GUdevEnumerator. - * @name: Wildcard filter for sysfs attribute key. - * @value: Wildcard filter for sysfs attribute value. - * - * All returned devices will have a sysfs attribute matching the given @name and @value. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_match_sysfs_attr (GUdevEnumerator *enumerator, - const gchar *name, - const gchar *value) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (name != NULL, NULL); - g_return_val_if_fail (value != NULL, NULL); - udev_enumerate_add_match_sysattr (enumerator->priv->e, name, value); - return enumerator; -} - -/** - * g_udev_enumerator_add_nomatch_sysfs_attr: - * @enumerator: A #GUdevEnumerator. - * @name: Wildcard filter for sysfs attribute key. - * @value: Wildcard filter for sysfs attribute value. - * - * All returned devices will not have a sysfs attribute matching the given @name and @value. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_nomatch_sysfs_attr (GUdevEnumerator *enumerator, - const gchar *name, - const gchar *value) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (name != NULL, NULL); - g_return_val_if_fail (value != NULL, NULL); - udev_enumerate_add_nomatch_sysattr (enumerator->priv->e, name, value); - return enumerator; -} - -/** - * g_udev_enumerator_add_match_property: - * @enumerator: A #GUdevEnumerator. - * @name: Wildcard filter for property name. - * @value: Wildcard filter for property value. - * - * All returned devices will have a property matching the given @name and @value. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_match_property (GUdevEnumerator *enumerator, - const gchar *name, - const gchar *value) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (name != NULL, NULL); - g_return_val_if_fail (value != NULL, NULL); - udev_enumerate_add_match_property (enumerator->priv->e, name, value); - return enumerator; -} - -/** - * g_udev_enumerator_add_match_name: - * @enumerator: A #GUdevEnumerator. - * @name: Wildcard filter for kernel name e.g. "sda*". - * - * All returned devices will match the given @name. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_match_name (GUdevEnumerator *enumerator, - const gchar *name) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (name != NULL, NULL); - udev_enumerate_add_match_sysname (enumerator->priv->e, name); - return enumerator; -} - -/** - * g_udev_enumerator_add_sysfs_path: - * @enumerator: A #GUdevEnumerator. - * @sysfs_path: A sysfs path, e.g. "/sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda" - * - * Add a device to the list of devices, to retrieve it back sorted in dependency order. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_sysfs_path (GUdevEnumerator *enumerator, - const gchar *sysfs_path) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (sysfs_path != NULL, NULL); - udev_enumerate_add_syspath (enumerator->priv->e, sysfs_path); - return enumerator; -} - -/** - * g_udev_enumerator_add_match_tag: - * @enumerator: A #GUdevEnumerator. - * @tag: A udev tag e.g. "udev-acl". - * - * All returned devices will match the given @tag. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_match_tag (GUdevEnumerator *enumerator, - const gchar *tag) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - g_return_val_if_fail (tag != NULL, NULL); - udev_enumerate_add_match_tag (enumerator->priv->e, tag); - return enumerator; -} - -/** - * g_udev_enumerator_add_match_is_initialized: - * @enumerator: A #GUdevEnumerator. - * - * All returned devices will be initialized. - * - * Returns: (transfer none): The passed in @enumerator. - * - * Since: 165 - */ -GUdevEnumerator * -g_udev_enumerator_add_match_is_initialized (GUdevEnumerator *enumerator) -{ - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - udev_enumerate_add_match_is_initialized (enumerator->priv->e); - return enumerator; -} - -/** - * g_udev_enumerator_execute: - * @enumerator: A #GUdevEnumerator. - * - * Executes the query in @enumerator. - * - * Returns: (element-type GUdevDevice) (transfer full): A list of #GUdevDevice objects. The caller should free the result by using g_object_unref() on each element in the list and then g_list_free() on the list. - * - * Since: 165 - */ -GList * -g_udev_enumerator_execute (GUdevEnumerator *enumerator) -{ - GList *ret; - struct udev_list_entry *l, *devices; - - g_return_val_if_fail (G_UDEV_IS_ENUMERATOR (enumerator), NULL); - - ret = NULL; - - /* retrieve the list */ - udev_enumerate_scan_devices (enumerator->priv->e); - - devices = udev_enumerate_get_list_entry (enumerator->priv->e); - for (l = devices; l != NULL; l = udev_list_entry_get_next (l)) - { - struct udev_device *udevice; - GUdevDevice *device; - - udevice = udev_device_new_from_syspath (udev_enumerate_get_udev (enumerator->priv->e), - udev_list_entry_get_name (l)); - if (udevice == NULL) - continue; - - device = _g_udev_device_new (udevice); - udev_device_unref (udevice); - ret = g_list_prepend (ret, device); - } - - ret = g_list_reverse (ret); - - return ret; -} diff --git a/src/udev/gudev/gudevenumerator.h b/src/udev/gudev/gudevenumerator.h deleted file mode 100644 index 3fddccf573..0000000000 --- a/src/udev/gudev/gudevenumerator.h +++ /dev/null @@ -1,107 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008-2010 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) -#error "Only can be included directly, this file may disappear or change contents." -#endif - -#ifndef __G_UDEV_ENUMERATOR_H__ -#define __G_UDEV_ENUMERATOR_H__ - -#include - -G_BEGIN_DECLS - -#define G_UDEV_TYPE_ENUMERATOR (g_udev_enumerator_get_type ()) -#define G_UDEV_ENUMERATOR(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_UDEV_TYPE_ENUMERATOR, GUdevEnumerator)) -#define G_UDEV_ENUMERATOR_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_UDEV_TYPE_ENUMERATOR, GUdevEnumeratorClass)) -#define G_UDEV_IS_ENUMERATOR(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_UDEV_TYPE_ENUMERATOR)) -#define G_UDEV_IS_ENUMERATOR_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_UDEV_TYPE_ENUMERATOR)) -#define G_UDEV_ENUMERATOR_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_UDEV_TYPE_ENUMERATOR, GUdevEnumeratorClass)) - -typedef struct _GUdevEnumeratorClass GUdevEnumeratorClass; -typedef struct _GUdevEnumeratorPrivate GUdevEnumeratorPrivate; - -/** - * GUdevEnumerator: - * - * The #GUdevEnumerator struct is opaque and should not be accessed directly. - * - * Since: 165 - */ -struct _GUdevEnumerator -{ - GObject parent; - - /*< private >*/ - GUdevEnumeratorPrivate *priv; -}; - -/** - * GUdevEnumeratorClass: - * @parent_class: Parent class. - * - * Class structure for #GUdevEnumerator. - * - * Since: 165 - */ -struct _GUdevEnumeratorClass -{ - GObjectClass parent_class; - - /*< private >*/ - /* Padding for future expansion */ - void (*reserved1) (void); - void (*reserved2) (void); - void (*reserved3) (void); - void (*reserved4) (void); - void (*reserved5) (void); - void (*reserved6) (void); - void (*reserved7) (void); - void (*reserved8) (void); -}; - -GType g_udev_enumerator_get_type (void) G_GNUC_CONST; -GUdevEnumerator *g_udev_enumerator_new (GUdevClient *client); -GUdevEnumerator *g_udev_enumerator_add_match_subsystem (GUdevEnumerator *enumerator, - const gchar *subsystem); -GUdevEnumerator *g_udev_enumerator_add_nomatch_subsystem (GUdevEnumerator *enumerator, - const gchar *subsystem); -GUdevEnumerator *g_udev_enumerator_add_match_sysfs_attr (GUdevEnumerator *enumerator, - const gchar *name, - const gchar *value); -GUdevEnumerator *g_udev_enumerator_add_nomatch_sysfs_attr (GUdevEnumerator *enumerator, - const gchar *name, - const gchar *value); -GUdevEnumerator *g_udev_enumerator_add_match_property (GUdevEnumerator *enumerator, - const gchar *name, - const gchar *value); -GUdevEnumerator *g_udev_enumerator_add_match_name (GUdevEnumerator *enumerator, - const gchar *name); -GUdevEnumerator *g_udev_enumerator_add_match_tag (GUdevEnumerator *enumerator, - const gchar *tag); -GUdevEnumerator *g_udev_enumerator_add_match_is_initialized (GUdevEnumerator *enumerator); -GUdevEnumerator *g_udev_enumerator_add_sysfs_path (GUdevEnumerator *enumerator, - const gchar *sysfs_path); -GList *g_udev_enumerator_execute (GUdevEnumerator *enumerator); - -G_END_DECLS - -#endif /* __G_UDEV_ENUMERATOR_H__ */ diff --git a/src/udev/gudev/gudevenums.h b/src/udev/gudev/gudevenums.h deleted file mode 100644 index c3a0aa8747..0000000000 --- a/src/udev/gudev/gudevenums.h +++ /dev/null @@ -1,49 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) -#error "Only can be included directly, this file may disappear or change contents." -#endif - -#ifndef __G_UDEV_ENUMS_H__ -#define __G_UDEV_ENUMS_H__ - -#include - -G_BEGIN_DECLS - -/** - * GUdevDeviceType: - * @G_UDEV_DEVICE_TYPE_NONE: Device does not have a device file. - * @G_UDEV_DEVICE_TYPE_BLOCK: Device is a block device. - * @G_UDEV_DEVICE_TYPE_CHAR: Device is a character device. - * - * Enumeration used to specify a the type of a device. - */ -typedef enum -{ - G_UDEV_DEVICE_TYPE_NONE = 0, - G_UDEV_DEVICE_TYPE_BLOCK = 'b', - G_UDEV_DEVICE_TYPE_CHAR = 'c', -} GUdevDeviceType; - -G_END_DECLS - -#endif /* __G_UDEV_ENUMS_H__ */ diff --git a/src/udev/gudev/gudevenumtypes.c.template b/src/udev/gudev/gudevenumtypes.c.template deleted file mode 100644 index fc30b39e2e..0000000000 --- a/src/udev/gudev/gudevenumtypes.c.template +++ /dev/null @@ -1,39 +0,0 @@ -/*** BEGIN file-header ***/ -#include - -/*** END file-header ***/ - -/*** BEGIN file-production ***/ -/* enumerations from "@filename@" */ -/*** END file-production ***/ - -/*** BEGIN value-header ***/ -GType -@enum_name@_get_type (void) -{ - static volatile gsize g_define_type_id__volatile = 0; - - if (g_once_init_enter (&g_define_type_id__volatile)) - { - static const G@Type@Value values[] = { -/*** END value-header ***/ - -/*** BEGIN value-production ***/ - { @VALUENAME@, "@VALUENAME@", "@valuenick@" }, -/*** END value-production ***/ - -/*** BEGIN value-tail ***/ - { 0, NULL, NULL } - }; - GType g_define_type_id = - g_@type@_register_static (g_intern_static_string ("@EnumName@"), values); - g_once_init_leave (&g_define_type_id__volatile, g_define_type_id); - } - - return g_define_type_id__volatile; -} - -/*** END value-tail ***/ - -/*** BEGIN file-tail ***/ -/*** END file-tail ***/ diff --git a/src/udev/gudev/gudevenumtypes.h.template b/src/udev/gudev/gudevenumtypes.h.template deleted file mode 100644 index d0ab3393e6..0000000000 --- a/src/udev/gudev/gudevenumtypes.h.template +++ /dev/null @@ -1,24 +0,0 @@ -/*** BEGIN file-header ***/ -#ifndef __GUDEV_ENUM_TYPES_H__ -#define __GUDEV_ENUM_TYPES_H__ - -#include - -G_BEGIN_DECLS -/*** END file-header ***/ - -/*** BEGIN file-production ***/ - -/* enumerations from "@filename@" */ -/*** END file-production ***/ - -/*** BEGIN value-header ***/ -GType @enum_name@_get_type (void) G_GNUC_CONST; -#define @ENUMPREFIX@_TYPE_@ENUMSHORT@ (@enum_name@_get_type ()) -/*** END value-header ***/ - -/*** BEGIN file-tail ***/ -G_END_DECLS - -#endif /* __GUDEV_ENUM_TYPES_H__ */ -/*** END file-tail ***/ diff --git a/src/udev/gudev/gudevmarshal.list b/src/udev/gudev/gudevmarshal.list deleted file mode 100644 index 7e665999e8..0000000000 --- a/src/udev/gudev/gudevmarshal.list +++ /dev/null @@ -1 +0,0 @@ -VOID:STRING,OBJECT diff --git a/src/udev/gudev/gudevprivate.h b/src/udev/gudev/gudevprivate.h deleted file mode 100644 index 8866f52b88..0000000000 --- a/src/udev/gudev/gudevprivate.h +++ /dev/null @@ -1,41 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) -#error "Only can be included directly, this file may disappear or change contents." -#endif - -#ifndef __G_UDEV_PRIVATE_H__ -#define __G_UDEV_PRIVATE_H__ - -#include - -#include - -G_BEGIN_DECLS - -GUdevDevice * -_g_udev_device_new (struct udev_device *udevice); - -struct udev *_g_udev_client_get_udev (GUdevClient *client); - -G_END_DECLS - -#endif /* __G_UDEV_PRIVATE_H__ */ diff --git a/src/udev/gudev/gudevtypes.h b/src/udev/gudev/gudevtypes.h deleted file mode 100644 index 888482783d..0000000000 --- a/src/udev/gudev/gudevtypes.h +++ /dev/null @@ -1,51 +0,0 @@ -/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- - * - * Copyright (C) 2008 David Zeuthen - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#if !defined (_GUDEV_COMPILATION) && !defined(_GUDEV_INSIDE_GUDEV_H) -#error "Only can be included directly, this file may disappear or change contents." -#endif - -#ifndef __G_UDEV_TYPES_H__ -#define __G_UDEV_TYPES_H__ - -#include -#include - -G_BEGIN_DECLS - -typedef struct _GUdevClient GUdevClient; -typedef struct _GUdevDevice GUdevDevice; -typedef struct _GUdevEnumerator GUdevEnumerator; - -/** - * GUdevDeviceNumber: - * - * Corresponds to the standard #dev_t type as defined by POSIX (Until - * bug 584517 is resolved this work-around is needed). - */ -#ifdef _GUDEV_WORK_AROUND_DEV_T_BUG -typedef guint64 GUdevDeviceNumber; /* __UQUAD_TYPE */ -#else -typedef dev_t GUdevDeviceNumber; -#endif - -G_END_DECLS - -#endif /* __G_UDEV_TYPES_H__ */ diff --git a/src/udev/gudev/seed-example-enum.js b/src/udev/gudev/seed-example-enum.js deleted file mode 100755 index 66206ad806..0000000000 --- a/src/udev/gudev/seed-example-enum.js +++ /dev/null @@ -1,38 +0,0 @@ -#!/usr/bin/env seed - -const GLib = imports.gi.GLib; -const GUdev = imports.gi.GUdev; - -function print_device(device) { - print(" initialized: " + device.get_is_initialized()); - print(" usec since initialized: " + device.get_usec_since_initialized()); - print(" subsystem: " + device.get_subsystem()); - print(" devtype: " + device.get_devtype()); - print(" name: " + device.get_name()); - print(" number: " + device.get_number()); - print(" sysfs_path: " + device.get_sysfs_path()); - print(" driver: " + device.get_driver()); - print(" action: " + device.get_action()); - print(" seqnum: " + device.get_seqnum()); - print(" device type: " + device.get_device_type()); - print(" device number: " + device.get_device_number()); - print(" device file: " + device.get_device_file()); - print(" device file symlinks: " + device.get_device_file_symlinks()); - print(" tags: " + device.get_tags()); - var keys = device.get_property_keys(); - for (var n = 0; n < keys.length; n++) { - print(" " + keys[n] + "=" + device.get_property(keys[n])); - } -} - -var client = new GUdev.Client({subsystems: []}); -var enumerator = new GUdev.Enumerator({client: client}); -enumerator.add_match_subsystem('b*') - -var devices = enumerator.execute(); - -for (var n=0; n < devices.length; n++) { - var device = devices[n]; - print_device(device); - print(""); -} diff --git a/src/udev/gudev/seed-example.js b/src/udev/gudev/seed-example.js deleted file mode 100755 index e2ac324d23..0000000000 --- a/src/udev/gudev/seed-example.js +++ /dev/null @@ -1,72 +0,0 @@ -#!/usr/bin/env seed - -// seed example - -const GLib = imports.gi.GLib; -const GUdev = imports.gi.GUdev; - -function print_device (device) { - print (" subsystem: " + device.get_subsystem ()); - print (" devtype: " + device.get_devtype ()); - print (" name: " + device.get_name ()); - print (" number: " + device.get_number ()); - print (" sysfs_path: " + device.get_sysfs_path ()); - print (" driver: " + device.get_driver ()); - print (" action: " + device.get_action ()); - print (" seqnum: " + device.get_seqnum ()); - print (" device type: " + device.get_device_type ()); - print (" device number: " + device.get_device_number ()); - print (" device file: " + device.get_device_file ()); - print (" device file symlinks: " + device.get_device_file_symlinks ()); - print (" foo: " + device.get_sysfs_attr_as_strv ("stat")); - var keys = device.get_property_keys (); - for (var n = 0; n < keys.length; n++) { - print (" " + keys[n] + "=" + device.get_property (keys[n])); - } -} - -function on_uevent (client, action, device) { - print ("action " + action + " on device " + device.get_sysfs_path()); - print_device (device); - print (""); -} - -var client = new GUdev.Client ({subsystems: ["block", "usb/usb_interface"]}); -client.signal.connect ("uevent", on_uevent); - -var block_devices = client.query_by_subsystem ("block"); -for (var n = 0; n < block_devices.length; n++) { - print ("block device: " + block_devices[n].get_device_file ()); -} - -var d; - -d = client.query_by_device_number (GUdev.DeviceType.BLOCK, 0x0810); -if (d == null) { - print ("query_by_device_number 0x810 -> null"); -} else { - print ("query_by_device_number 0x810 -> " + d.get_device_file ()); - dd = d.get_parent_with_subsystem ("usb", null); - print_device (dd); - print ("--------------------------------------------------------------------------"); - while (d != null) { - print_device (d); - print (""); - d = d.get_parent (); - } -} - -d = client.query_by_sysfs_path ("/sys/block/sda/sda1"); -print ("query_by_sysfs_path (\"/sys/block/sda1\") -> " + d.get_device_file ()); - -d = client.query_by_subsystem_and_name ("block", "sda2"); -print ("query_by_subsystem_and_name (\"block\", \"sda2\") -> " + d.get_device_file ()); - -d = client.query_by_device_file ("/dev/sda"); -print ("query_by_device_file (\"/dev/sda\") -> " + d.get_device_file ()); - -d = client.query_by_device_file ("/dev/block/8:0"); -print ("query_by_device_file (\"/dev/block/8:0\") -> " + d.get_device_file ()); - -var mainloop = GLib.main_loop_new (); -GLib.main_loop_run (mainloop); diff --git a/src/udev/libudev-device-private.c b/src/udev/libudev-device-private.c deleted file mode 100644 index 91fd06c025..0000000000 --- a/src/udev/libudev-device-private.c +++ /dev/null @@ -1,185 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2010 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -static void udev_device_tag(struct udev_device *dev, const char *tag, bool add) -{ - const char *id; - struct udev *udev = udev_device_get_udev(dev); - char filename[UTIL_PATH_SIZE]; - - id = udev_device_get_id_filename(dev); - if (id == NULL) - return; - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/tags/", tag, "/", id, NULL); - - if (add) { - int fd; - - util_create_path(udev, filename); - fd = open(filename, O_WRONLY|O_CREAT|O_CLOEXEC|O_TRUNC|O_NOFOLLOW, 0444); - if (fd >= 0) - close(fd); - } else { - unlink(filename); - } -} - -int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add) -{ - struct udev_list_entry *list_entry; - bool found; - - if (add && dev_old != NULL) { - /* delete possible left-over tags */ - udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev_old)) { - const char *tag_old = udev_list_entry_get_name(list_entry); - struct udev_list_entry *list_entry_current; - - found = false; - udev_list_entry_foreach(list_entry_current, udev_device_get_tags_list_entry(dev)) { - const char *tag = udev_list_entry_get_name(list_entry_current); - - if (strcmp(tag, tag_old) == 0) { - found = true; - break; - } - } - if (!found) - udev_device_tag(dev_old, tag_old, false); - } - } - - udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(dev)) - udev_device_tag(dev, udev_list_entry_get_name(list_entry), add); - - return 0; -} - -static bool device_has_info(struct udev_device *udev_device) -{ - struct udev_list_entry *list_entry; - - if (udev_device_get_devlinks_list_entry(udev_device) != NULL) - return true; - if (udev_device_get_devlink_priority(udev_device) != 0) - return true; - udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) - if (udev_list_entry_get_num(list_entry)) - return true; - if (udev_device_get_tags_list_entry(udev_device) != NULL) - return true; - if (udev_device_get_watch_handle(udev_device) >= 0) - return true; - return false; -} - -int udev_device_update_db(struct udev_device *udev_device) -{ - bool has_info; - const char *id; - struct udev *udev = udev_device_get_udev(udev_device); - char filename[UTIL_PATH_SIZE]; - char filename_tmp[UTIL_PATH_SIZE]; - FILE *f; - - id = udev_device_get_id_filename(udev_device); - if (id == NULL) - return -1; - - has_info = device_has_info(udev_device); - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL); - - /* do not store anything for otherwise empty devices */ - if (!has_info && - major(udev_device_get_devnum(udev_device)) == 0 && - udev_device_get_ifindex(udev_device) == 0) { - unlink(filename); - return 0; - } - - /* write a database file */ - util_strscpyl(filename_tmp, sizeof(filename_tmp), filename, ".tmp", NULL); - util_create_path(udev, filename_tmp); - f = fopen(filename_tmp, "we"); - if (f == NULL) { - err(udev, "unable to create temporary db file '%s': %m\n", filename_tmp); - return -1; - } - - /* - * set 'sticky' bit to indicate that we should not clean the - * database when we transition from initramfs to the real root - */ - if (udev_device_get_db_persist(udev_device)) - fchmod(fileno(f), 01644); - - if (has_info) { - struct udev_list_entry *list_entry; - - if (major(udev_device_get_devnum(udev_device)) > 0) { - size_t devlen = strlen(udev_get_dev_path(udev))+1; - - udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(udev_device)) - fprintf(f, "S:%s\n", &udev_list_entry_get_name(list_entry)[devlen]); - if (udev_device_get_devlink_priority(udev_device) != 0) - fprintf(f, "L:%i\n", udev_device_get_devlink_priority(udev_device)); - if (udev_device_get_watch_handle(udev_device) >= 0) - fprintf(f, "W:%i\n", udev_device_get_watch_handle(udev_device)); - } - - if (udev_device_get_usec_initialized(udev_device) > 0) - fprintf(f, "I:%llu\n", udev_device_get_usec_initialized(udev_device)); - - udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) { - if (!udev_list_entry_get_num(list_entry)) - continue; - fprintf(f, "E:%s=%s\n", - udev_list_entry_get_name(list_entry), - udev_list_entry_get_value(list_entry)); - } - - udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device)) - fprintf(f, "G:%s\n", udev_list_entry_get_name(list_entry)); - } - - fclose(f); - rename(filename_tmp, filename); - dbg(udev, "created %s file '%s' for '%s'\n", has_info ? "db" : "empty", - filename, udev_device_get_devpath(udev_device)); - return 0; -} - -int udev_device_delete_db(struct udev_device *udev_device) -{ - const char *id; - struct udev *udev = udev_device_get_udev(udev_device); - char filename[UTIL_PATH_SIZE]; - - id = udev_device_get_id_filename(udev_device); - if (id == NULL) - return -1; - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev), "/data/", id, NULL); - unlink(filename); - return 0; -} diff --git a/src/udev/libudev-device.c b/src/udev/libudev-device.c deleted file mode 100644 index 40b00ac5d2..0000000000 --- a/src/udev/libudev-device.c +++ /dev/null @@ -1,1720 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2010 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -/** - * SECTION:libudev-device - * @short_description: kernel sys devices - * - * Representation of kernel sys devices. Devices are uniquely identified - * by their syspath, every device has exactly one path in the kernel sys - * filesystem. Devices usually belong to a kernel subsystem, and and have - * a unique name inside that subsystem. - */ - -/** - * udev_device: - * - * Opaque object representing one kernel sys device. - */ -struct udev_device { - struct udev *udev; - struct udev_device *parent_device; - char *syspath; - const char *devpath; - char *sysname; - const char *sysnum; - char *devnode; - mode_t devnode_mode; - char *subsystem; - char *devtype; - char *driver; - char *action; - char *devpath_old; - char *id_filename; - char **envp; - char *monitor_buf; - size_t monitor_buf_len; - struct udev_list devlinks_list; - struct udev_list properties_list; - struct udev_list sysattr_value_list; - struct udev_list sysattr_list; - struct udev_list tags_list; - unsigned long long int seqnum; - unsigned long long int usec_initialized; - int devlink_priority; - int refcount; - dev_t devnum; - int ifindex; - int watch_handle; - int maj, min; - bool parent_set; - bool subsystem_set; - bool devtype_set; - bool devlinks_uptodate; - bool envp_uptodate; - bool tags_uptodate; - bool driver_set; - bool info_loaded; - bool db_loaded; - bool uevent_loaded; - bool is_initialized; - bool sysattr_list_read; - bool db_persist; -}; - -/** - * udev_device_get_seqnum: - * @udev_device: udev device - * - * This is only valid if the device was received through a monitor. Devices read from - * sys do not have a sequence number. - * - * Returns: the kernel event sequence number, or 0 if there is no sequence number available. - **/ -_public_ unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return 0; - return udev_device->seqnum; -} - -static int udev_device_set_seqnum(struct udev_device *udev_device, unsigned long long int seqnum) -{ - char num[32]; - - udev_device->seqnum = seqnum; - snprintf(num, sizeof(num), "%llu", seqnum); - udev_device_add_property(udev_device, "SEQNUM", num); - return 0; -} - -int udev_device_get_ifindex(struct udev_device *udev_device) -{ - if (!udev_device->info_loaded) - udev_device_read_uevent_file(udev_device); - return udev_device->ifindex; -} - -static int udev_device_set_ifindex(struct udev_device *udev_device, int ifindex) -{ - char num[32]; - - udev_device->ifindex = ifindex; - snprintf(num, sizeof(num), "%u", ifindex); - udev_device_add_property(udev_device, "IFINDEX", num); - return 0; -} - -/** - * udev_device_get_devnum: - * @udev_device: udev device - * - * Returns: the device major/minor number. - **/ -_public_ dev_t udev_device_get_devnum(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return makedev(0, 0); - if (!udev_device->info_loaded) - udev_device_read_uevent_file(udev_device); - return udev_device->devnum; -} - -static int udev_device_set_devnum(struct udev_device *udev_device, dev_t devnum) -{ - char num[32]; - - udev_device->devnum = devnum; - - snprintf(num, sizeof(num), "%u", major(devnum)); - udev_device_add_property(udev_device, "MAJOR", num); - snprintf(num, sizeof(num), "%u", minor(devnum)); - udev_device_add_property(udev_device, "MINOR", num); - return 0; -} - -const char *udev_device_get_devpath_old(struct udev_device *udev_device) -{ - return udev_device->devpath_old; -} - -static int udev_device_set_devpath_old(struct udev_device *udev_device, const char *devpath_old) -{ - const char *pos; - - free(udev_device->devpath_old); - udev_device->devpath_old = strdup(devpath_old); - if (udev_device->devpath_old == NULL) - return -ENOMEM; - udev_device_add_property(udev_device, "DEVPATH_OLD", udev_device->devpath_old); - - pos = strrchr(udev_device->devpath_old, '/'); - if (pos == NULL) - return -EINVAL; - return 0; -} - -/** - * udev_device_get_driver: - * @udev_device: udev device - * - * Returns: the driver string, or #NULL if there is no driver attached. - **/ -_public_ const char *udev_device_get_driver(struct udev_device *udev_device) -{ - char driver[UTIL_NAME_SIZE]; - - if (udev_device == NULL) - return NULL; - if (!udev_device->driver_set) { - udev_device->driver_set = true; - if (util_get_sys_core_link_value(udev_device->udev, "driver", udev_device->syspath, driver, sizeof(driver)) > 0) - udev_device->driver = strdup(driver); - } - return udev_device->driver; -} - -static int udev_device_set_driver(struct udev_device *udev_device, const char *driver) -{ - free(udev_device->driver); - udev_device->driver = strdup(driver); - if (udev_device->driver == NULL) - return -ENOMEM; - udev_device->driver_set = true; - udev_device_add_property(udev_device, "DRIVER", udev_device->driver); - return 0; -} - -/** - * udev_device_get_devtype: - * @udev_device: udev device - * - * Retrieve the devtype string of the udev device. - * - * Returns: the devtype name of the udev device, or #NULL if it can not be determined - **/ -_public_ const char *udev_device_get_devtype(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - if (!udev_device->devtype_set) { - udev_device->devtype_set = true; - udev_device_read_uevent_file(udev_device); - } - return udev_device->devtype; -} - -static int udev_device_set_devtype(struct udev_device *udev_device, const char *devtype) -{ - free(udev_device->devtype); - udev_device->devtype = strdup(devtype); - if (udev_device->devtype == NULL) - return -ENOMEM; - udev_device->devtype_set = true; - udev_device_add_property(udev_device, "DEVTYPE", udev_device->devtype); - return 0; -} - -static int udev_device_set_subsystem(struct udev_device *udev_device, const char *subsystem) -{ - free(udev_device->subsystem); - udev_device->subsystem = strdup(subsystem); - if (udev_device->subsystem == NULL) - return -ENOMEM; - udev_device->subsystem_set = true; - udev_device_add_property(udev_device, "SUBSYSTEM", udev_device->subsystem); - return 0; -} - -/** - * udev_device_get_subsystem: - * @udev_device: udev device - * - * Retrieve the subsystem string of the udev device. The string does not - * contain any "/". - * - * Returns: the subsystem name of the udev device, or #NULL if it can not be determined - **/ -_public_ const char *udev_device_get_subsystem(struct udev_device *udev_device) -{ - char subsystem[UTIL_NAME_SIZE]; - - if (udev_device == NULL) - return NULL; - if (!udev_device->subsystem_set) { - udev_device->subsystem_set = true; - /* read "subsystem" link */ - if (util_get_sys_core_link_value(udev_device->udev, "subsystem", udev_device->syspath, subsystem, sizeof(subsystem)) > 0) { - udev_device_set_subsystem(udev_device, subsystem); - return udev_device->subsystem; - } - /* implicit names */ - if (strncmp(udev_device->devpath, "/module/", 8) == 0) { - udev_device_set_subsystem(udev_device, "module"); - return udev_device->subsystem; - } - if (strstr(udev_device->devpath, "/drivers/") != NULL) { - udev_device_set_subsystem(udev_device, "drivers"); - return udev_device->subsystem; - } - if (strncmp(udev_device->devpath, "/subsystem/", 11) == 0 || - strncmp(udev_device->devpath, "/class/", 7) == 0 || - strncmp(udev_device->devpath, "/bus/", 5) == 0) { - udev_device_set_subsystem(udev_device, "subsystem"); - return udev_device->subsystem; - } - } - return udev_device->subsystem; -} - -mode_t udev_device_get_devnode_mode(struct udev_device *udev_device) -{ - if (!udev_device->info_loaded) - udev_device_read_uevent_file(udev_device); - return udev_device->devnode_mode; -} - -static int udev_device_set_devnode_mode(struct udev_device *udev_device, mode_t mode) -{ - char num[32]; - - udev_device->devnode_mode = mode; - snprintf(num, sizeof(num), "%#o", mode); - udev_device_add_property(udev_device, "DEVMODE", num); - return 0; -} - -struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value) -{ - udev_device->envp_uptodate = false; - if (value == NULL) { - struct udev_list_entry *list_entry; - - list_entry = udev_device_get_properties_list_entry(udev_device); - list_entry = udev_list_entry_get_by_name(list_entry, key); - if (list_entry != NULL) - udev_list_entry_delete(list_entry); - return NULL; - } - return udev_list_entry_add(&udev_device->properties_list, key, value); -} - -static struct udev_list_entry *udev_device_add_property_from_string(struct udev_device *udev_device, const char *property) -{ - char name[UTIL_LINE_SIZE]; - char *val; - - util_strscpy(name, sizeof(name), property); - val = strchr(name, '='); - if (val == NULL) - return NULL; - val[0] = '\0'; - val = &val[1]; - if (val[0] == '\0') - val = NULL; - return udev_device_add_property(udev_device, name, val); -} - -/* - * parse property string, and if needed, update internal values accordingly - * - * udev_device_add_property_from_string_parse_finish() needs to be - * called after adding properties, and its return value checked - * - * udev_device_set_info_loaded() needs to be set, to avoid trying - * to use a device without a DEVPATH set - */ -void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property) -{ - if (strncmp(property, "DEVPATH=", 8) == 0) { - char path[UTIL_PATH_SIZE]; - - util_strscpyl(path, sizeof(path), udev_get_sys_path(udev_device->udev), &property[8], NULL); - udev_device_set_syspath(udev_device, path); - } else if (strncmp(property, "SUBSYSTEM=", 10) == 0) { - udev_device_set_subsystem(udev_device, &property[10]); - } else if (strncmp(property, "DEVTYPE=", 8) == 0) { - udev_device_set_devtype(udev_device, &property[8]); - } else if (strncmp(property, "DEVNAME=", 8) == 0) { - udev_device_set_devnode(udev_device, &property[8]); - } else if (strncmp(property, "DEVLINKS=", 9) == 0) { - char devlinks[UTIL_PATH_SIZE]; - char *slink; - char *next; - - util_strscpy(devlinks, sizeof(devlinks), &property[9]); - slink = devlinks; - next = strchr(slink, ' '); - while (next != NULL) { - next[0] = '\0'; - udev_device_add_devlink(udev_device, slink, 0); - slink = &next[1]; - next = strchr(slink, ' '); - } - if (slink[0] != '\0') - udev_device_add_devlink(udev_device, slink, 0); - } else if (strncmp(property, "TAGS=", 5) == 0) { - char tags[UTIL_PATH_SIZE]; - char *next; - - util_strscpy(tags, sizeof(tags), &property[5]); - next = strchr(tags, ':'); - if (next != NULL) { - next++; - while (next[0] != '\0') { - char *tag; - - tag = next; - next = strchr(tag, ':'); - if (next == NULL) - break; - next[0] = '\0'; - next++; - udev_device_add_tag(udev_device, tag); - } - } - } else if (strncmp(property, "USEC_INITIALIZED=", 19) == 0) { - udev_device_set_usec_initialized(udev_device, strtoull(&property[19], NULL, 10)); - } else if (strncmp(property, "DRIVER=", 7) == 0) { - udev_device_set_driver(udev_device, &property[7]); - } else if (strncmp(property, "ACTION=", 7) == 0) { - udev_device_set_action(udev_device, &property[7]); - } else if (strncmp(property, "MAJOR=", 6) == 0) { - udev_device->maj = strtoull(&property[6], NULL, 10); - } else if (strncmp(property, "MINOR=", 6) == 0) { - udev_device->min = strtoull(&property[6], NULL, 10); - } else if (strncmp(property, "DEVPATH_OLD=", 12) == 0) { - udev_device_set_devpath_old(udev_device, &property[12]); - } else if (strncmp(property, "SEQNUM=", 7) == 0) { - udev_device_set_seqnum(udev_device, strtoull(&property[7], NULL, 10)); - } else if (strncmp(property, "IFINDEX=", 8) == 0) { - udev_device_set_ifindex(udev_device, strtoull(&property[8], NULL, 10)); - } else if (strncmp(property, "DEVMODE=", 8) == 0) { - udev_device_set_devnode_mode(udev_device, strtoul(&property[8], NULL, 8)); - } else { - udev_device_add_property_from_string(udev_device, property); - } -} - -int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device) -{ - if (udev_device->maj > 0) - udev_device_set_devnum(udev_device, makedev(udev_device->maj, udev_device->min)); - udev_device->maj = 0; - udev_device->min = 0; - - if (udev_device->devpath == NULL || udev_device->subsystem == NULL) - return -EINVAL; - return 0; -} - -/** - * udev_device_get_property_value: - * @udev_device: udev device - * @key: property name - * - * Returns: the value of a device property, or #NULL if there is no such property. - **/ -_public_ const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key) -{ - struct udev_list_entry *list_entry; - - if (udev_device == NULL) - return NULL; - if (key == NULL) - return NULL; - - list_entry = udev_device_get_properties_list_entry(udev_device); - list_entry = udev_list_entry_get_by_name(list_entry, key); - return udev_list_entry_get_value(list_entry); -} - -int udev_device_read_db(struct udev_device *udev_device, const char *dbfile) -{ - char filename[UTIL_PATH_SIZE]; - char line[UTIL_LINE_SIZE]; - FILE *f; - - /* providing a database file will always force-load it */ - if (dbfile == NULL) { - const char *id; - - if (udev_device->db_loaded) - return 0; - udev_device->db_loaded = true; - - id = udev_device_get_id_filename(udev_device); - if (id == NULL) - return -1; - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_device->udev), "/data/", id, NULL); - dbfile = filename; - } - - f = fopen(dbfile, "re"); - if (f == NULL) { - dbg(udev_device->udev, "no db file to read %s: %m\n", dbfile); - return -1; - } - udev_device->is_initialized = true; - - while (fgets(line, sizeof(line), f)) { - ssize_t len; - const char *val; - struct udev_list_entry *entry; - - len = strlen(line); - if (len < 4) - break; - line[len-1] = '\0'; - val = &line[2]; - switch(line[0]) { - case 'S': - util_strscpyl(filename, sizeof(filename), udev_get_dev_path(udev_device->udev), "/", val, NULL); - udev_device_add_devlink(udev_device, filename, 0); - break; - case 'L': - udev_device_set_devlink_priority(udev_device, atoi(val)); - break; - case 'E': - entry = udev_device_add_property_from_string(udev_device, val); - udev_list_entry_set_num(entry, true); - break; - case 'G': - udev_device_add_tag(udev_device, val); - break; - case 'W': - udev_device_set_watch_handle(udev_device, atoi(val)); - break; - case 'I': - udev_device_set_usec_initialized(udev_device, strtoull(val, NULL, 10)); - break; - } - } - fclose(f); - - dbg(udev_device->udev, "device %p filled with db file data\n", udev_device); - return 0; -} - -int udev_device_read_uevent_file(struct udev_device *udev_device) -{ - char filename[UTIL_PATH_SIZE]; - FILE *f; - char line[UTIL_LINE_SIZE]; - int maj = 0; - int min = 0; - - if (udev_device->uevent_loaded) - return 0; - - util_strscpyl(filename, sizeof(filename), udev_device->syspath, "/uevent", NULL); - f = fopen(filename, "re"); - if (f == NULL) - return -1; - udev_device->uevent_loaded = true; - - while (fgets(line, sizeof(line), f)) { - char *pos; - - pos = strchr(line, '\n'); - if (pos == NULL) - continue; - pos[0] = '\0'; - - if (strncmp(line, "DEVTYPE=", 8) == 0) { - udev_device_set_devtype(udev_device, &line[8]); - continue; - } - if (strncmp(line, "IFINDEX=", 8) == 0) { - udev_device_set_ifindex(udev_device, strtoull(&line[8], NULL, 10)); - continue; - } - if (strncmp(line, "DEVNAME=", 8) == 0) { - udev_device_set_devnode(udev_device, &line[8]); - continue; - } - - if (strncmp(line, "MAJOR=", 6) == 0) - maj = strtoull(&line[6], NULL, 10); - else if (strncmp(line, "MINOR=", 6) == 0) - min = strtoull(&line[6], NULL, 10); - else if (strncmp(line, "DEVMODE=", 8) == 0) - udev_device->devnode_mode = strtoul(&line[8], NULL, 8); - - udev_device_add_property_from_string(udev_device, line); - } - - udev_device->devnum = makedev(maj, min); - fclose(f); - return 0; -} - -void udev_device_set_info_loaded(struct udev_device *device) -{ - device->info_loaded = true; -} - -struct udev_device *udev_device_new(struct udev *udev) -{ - struct udev_device *udev_device; - struct udev_list_entry *list_entry; - - if (udev == NULL) - return NULL; - - udev_device = calloc(1, sizeof(struct udev_device)); - if (udev_device == NULL) - return NULL; - udev_device->refcount = 1; - udev_device->udev = udev; - udev_list_init(udev, &udev_device->devlinks_list, true); - udev_list_init(udev, &udev_device->properties_list, true); - udev_list_init(udev, &udev_device->sysattr_value_list, true); - udev_list_init(udev, &udev_device->sysattr_list, false); - udev_list_init(udev, &udev_device->tags_list, true); - udev_device->watch_handle = -1; - /* copy global properties */ - udev_list_entry_foreach(list_entry, udev_get_properties_list_entry(udev)) - udev_device_add_property(udev_device, - udev_list_entry_get_name(list_entry), - udev_list_entry_get_value(list_entry)); - return udev_device; -} - -/** - * udev_device_new_from_syspath: - * @udev: udev library context - * @syspath: sys device path including sys directory - * - * Create new udev device, and fill in information from the sys - * device and the udev database entry. The syspath is the absolute - * path to the device, including the sys mount point. - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev device. - * - * Returns: a new udev device, or #NULL, if it does not exist - **/ -_public_ struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath) -{ - size_t len; - const char *subdir; - char path[UTIL_PATH_SIZE]; - char *pos; - struct stat statbuf; - struct udev_device *udev_device; - - if (udev == NULL) - return NULL; - if (syspath == NULL) - return NULL; - - /* path starts in sys */ - len = strlen(udev_get_sys_path(udev)); - if (strncmp(syspath, udev_get_sys_path(udev), len) != 0) { - dbg(udev, "not in sys :%s\n", syspath); - return NULL; - } - - /* path is not a root directory */ - subdir = &syspath[len+1]; - pos = strrchr(subdir, '/'); - if (pos == NULL || pos[1] == '\0' || pos < &subdir[2]) - return NULL; - - /* resolve possible symlink to real path */ - util_strscpy(path, sizeof(path), syspath); - util_resolve_sys_link(udev, path, sizeof(path)); - - if (strncmp(&path[len], "/devices/", 9) == 0) { - char file[UTIL_PATH_SIZE]; - - /* all "devices" require a "uevent" file */ - util_strscpyl(file, sizeof(file), path, "/uevent", NULL); - if (stat(file, &statbuf) != 0) - return NULL; - } else { - /* everything else just needs to be a directory */ - if (stat(path, &statbuf) != 0 || !S_ISDIR(statbuf.st_mode)) - return NULL; - } - - udev_device = udev_device_new(udev); - if (udev_device == NULL) - return NULL; - - udev_device_set_syspath(udev_device, path); - dbg(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device)); - - return udev_device; -} - -/** - * udev_device_new_from_devnum: - * @udev: udev library context - * @type: char or block device - * @devnum: device major/minor number - * - * Create new udev device, and fill in information from the sys - * device and the udev database entry. The device is looked-up - * by its major/minor number and type. Character and block device - * numbers are not unique across the two types. - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev device. - * - * Returns: a new udev device, or #NULL, if it does not exist - **/ -_public_ struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum) -{ - char path[UTIL_PATH_SIZE]; - const char *type_str; - - if (type == 'b') - type_str = "block"; - else if (type == 'c') - type_str = "char"; - else - return NULL; - - /* use /sys/dev/{block,char}/: link */ - snprintf(path, sizeof(path), "%s/dev/%s/%u:%u", - udev_get_sys_path(udev), type_str, major(devnum), minor(devnum)); - return udev_device_new_from_syspath(udev, path); -} - -struct udev_device *udev_device_new_from_id_filename(struct udev *udev, char *id) -{ - char type; - int maj, min; - char subsys[UTIL_PATH_SIZE]; - char *sysname; - - switch(id[0]) { - case 'b': - case 'c': - if (sscanf(id, "%c%i:%i", &type, &maj, &min) != 3) - return NULL; - return udev_device_new_from_devnum(udev, type, makedev(maj, min)); - case 'n': { - int sk; - struct ifreq ifr; - struct udev_device *dev; - int ifindex; - - ifindex = strtoul(&id[1], NULL, 10); - if (ifindex <= 0) - return NULL; - - sk = socket(PF_INET, SOCK_DGRAM, 0); - if (sk < 0) - return NULL; - memset(&ifr, 0x00, sizeof(struct ifreq)); - ifr.ifr_ifindex = ifindex; - if (ioctl(sk, SIOCGIFNAME, &ifr) != 0) { - close(sk); - return NULL; - } - close(sk); - - dev = udev_device_new_from_subsystem_sysname(udev, "net", ifr.ifr_name); - if (dev == NULL) - return NULL; - if (udev_device_get_ifindex(dev) == ifindex) - return dev; - udev_device_unref(dev); - return NULL; - } - case '+': - util_strscpy(subsys, sizeof(subsys), &id[1]); - sysname = strchr(subsys, ':'); - if (sysname == NULL) - return NULL; - sysname[0] = '\0'; - sysname = &sysname[1]; - return udev_device_new_from_subsystem_sysname(udev, subsys, sysname); - default: - return NULL; - } -} - -/** - * udev_device_new_from_subsystem_sysname: - * @udev: udev library context - * @subsystem: the subsystem of the device - * @sysname: the name of the device - * - * Create new udev device, and fill in information from the sys device - * and the udev database entry. The device is looked up by the subsystem - * and name string of the device, like "mem" / "zero", or "block" / "sda". - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev device. - * - * Returns: a new udev device, or #NULL, if it does not exist - **/ -_public_ struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname) -{ - char path_full[UTIL_PATH_SIZE]; - char *path; - size_t l; - struct stat statbuf; - - path = path_full; - l = util_strpcpyl(&path, sizeof(path_full), udev_get_sys_path(udev), NULL); - - if (strcmp(subsystem, "subsystem") == 0) { - util_strscpyl(path, l, "/subsystem/", sysname, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - - util_strscpyl(path, l, "/bus/", sysname, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - - util_strscpyl(path, l, "/class/", sysname, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - goto out; - } - - if (strcmp(subsystem, "module") == 0) { - util_strscpyl(path, l, "/module/", sysname, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - goto out; - } - - if (strcmp(subsystem, "drivers") == 0) { - char subsys[UTIL_NAME_SIZE]; - char *driver; - - util_strscpy(subsys, sizeof(subsys), sysname); - driver = strchr(subsys, ':'); - if (driver != NULL) { - driver[0] = '\0'; - driver = &driver[1]; - - util_strscpyl(path, l, "/subsystem/", subsys, "/drivers/", driver, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - - util_strscpyl(path, l, "/bus/", subsys, "/drivers/", driver, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - } - goto out; - } - - util_strscpyl(path, l, "/subsystem/", subsystem, "/devices/", sysname, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - - util_strscpyl(path, l, "/bus/", subsystem, "/devices/", sysname, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; - - util_strscpyl(path, l, "/class/", subsystem, "/", sysname, NULL); - if (stat(path_full, &statbuf) == 0) - goto found; -out: - return NULL; -found: - return udev_device_new_from_syspath(udev, path_full); -} - -/** - * udev_device_new_from_environment - * @udev: udev library context - * - * Create new udev device, and fill in information from the - * current process environment. This only works reliable if - * the process is called from a udev rule. It is usually used - * for tools executed from IMPORT= rules. - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev device. - * - * Returns: a new udev device, or #NULL, if it does not exist - **/ -_public_ struct udev_device *udev_device_new_from_environment(struct udev *udev) -{ - int i; - struct udev_device *udev_device; - - udev_device = udev_device_new(udev); - if (udev_device == NULL) - return NULL; - udev_device_set_info_loaded(udev_device); - - for (i = 0; environ[i] != NULL; i++) - udev_device_add_property_from_string_parse(udev_device, environ[i]); - - if (udev_device_add_property_from_string_parse_finish(udev_device) < 0) { - dbg(udev, "missing values, invalid device\n"); - udev_device_unref(udev_device); - udev_device = NULL; - } - - return udev_device; -} - -static struct udev_device *device_new_from_parent(struct udev_device *udev_device) -{ - struct udev_device *udev_device_parent = NULL; - char path[UTIL_PATH_SIZE]; - const char *subdir; - - util_strscpy(path, sizeof(path), udev_device->syspath); - subdir = &path[strlen(udev_get_sys_path(udev_device->udev))+1]; - for (;;) { - char *pos; - - pos = strrchr(subdir, '/'); - if (pos == NULL || pos < &subdir[2]) - break; - pos[0] = '\0'; - udev_device_parent = udev_device_new_from_syspath(udev_device->udev, path); - if (udev_device_parent != NULL) - return udev_device_parent; - } - return NULL; -} - -/** - * udev_device_get_parent: - * @udev_device: the device to start searching from - * - * Find the next parent device, and fill in information from the sys - * device and the udev database entry. - * - * The returned the device is not referenced. It is attached to the - * child device, and will be cleaned up when the child device - * is cleaned up. - * - * It is not necessarily just the upper level directory, empty or not - * recognized sys directories are ignored. - * - * It can be called as many times as needed, without caring about - * references. - * - * Returns: a new udev device, or #NULL, if it no parent exist. - **/ -_public_ struct udev_device *udev_device_get_parent(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - if (!udev_device->parent_set) { - udev_device->parent_set = true; - udev_device->parent_device = device_new_from_parent(udev_device); - } - return udev_device->parent_device; -} - -/** - * udev_device_get_parent_with_subsystem_devtype: - * @udev_device: udev device to start searching from - * @subsystem: the subsystem of the device - * @devtype: the type (DEVTYPE) of the device - * - * Find the next parent device, with a matching subsystem and devtype - * value, and fill in information from the sys device and the udev - * database entry. - * - * If devtype is #NULL, only subsystem is checked, and any devtype will - * match. - * - * The returned the device is not referenced. It is attached to the - * child device, and will be cleaned up when the child device - * is cleaned up. - * - * It can be called as many times as needed, without caring about - * references. - * - * Returns: a new udev device, or #NULL if no matching parent exists. - **/ -_public_ struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, const char *subsystem, const char *devtype) -{ - struct udev_device *parent; - - if (subsystem == NULL) - return NULL; - - parent = udev_device_get_parent(udev_device); - while (parent != NULL) { - const char *parent_subsystem; - const char *parent_devtype; - - parent_subsystem = udev_device_get_subsystem(parent); - if (parent_subsystem != NULL && strcmp(parent_subsystem, subsystem) == 0) { - if (devtype == NULL) - break; - parent_devtype = udev_device_get_devtype(parent); - if (parent_devtype != NULL && strcmp(parent_devtype, devtype) == 0) - break; - } - parent = udev_device_get_parent(parent); - } - return parent; -} - -/** - * udev_device_get_udev: - * @udev_device: udev device - * - * Retrieve the udev library context the device was created with. - * - * Returns: the udev library context - **/ -_public_ struct udev *udev_device_get_udev(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - return udev_device->udev; -} - -/** - * udev_device_ref: - * @udev_device: udev device - * - * Take a reference of a udev device. - * - * Returns: the passed udev device - **/ -_public_ struct udev_device *udev_device_ref(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - udev_device->refcount++; - return udev_device; -} - -/** - * udev_device_unref: - * @udev_device: udev device - * - * Drop a reference of a udev device. If the refcount reaches zero, - * the resources of the device will be released. - * - **/ -_public_ void udev_device_unref(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return; - udev_device->refcount--; - if (udev_device->refcount > 0) - return; - if (udev_device->parent_device != NULL) - udev_device_unref(udev_device->parent_device); - free(udev_device->syspath); - free(udev_device->sysname); - free(udev_device->devnode); - free(udev_device->subsystem); - free(udev_device->devtype); - udev_list_cleanup(&udev_device->devlinks_list); - udev_list_cleanup(&udev_device->properties_list); - udev_list_cleanup(&udev_device->sysattr_value_list); - udev_list_cleanup(&udev_device->sysattr_list); - udev_list_cleanup(&udev_device->tags_list); - free(udev_device->action); - free(udev_device->driver); - free(udev_device->devpath_old); - free(udev_device->id_filename); - free(udev_device->envp); - free(udev_device->monitor_buf); - free(udev_device); -} - -/** - * udev_device_get_devpath: - * @udev_device: udev device - * - * Retrieve the kernel devpath value of the udev device. The path - * does not contain the sys mount point, and starts with a '/'. - * - * Returns: the devpath of the udev device - **/ -_public_ const char *udev_device_get_devpath(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - return udev_device->devpath; -} - -/** - * udev_device_get_syspath: - * @udev_device: udev device - * - * Retrieve the sys path of the udev device. The path is an - * absolute path and starts with the sys mount point. - * - * Returns: the sys path of the udev device - **/ -_public_ const char *udev_device_get_syspath(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - return udev_device->syspath; -} - -/** - * udev_device_get_sysname: - * @udev_device: udev device - * - * Returns: the sys name of the device device - **/ -_public_ const char *udev_device_get_sysname(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - return udev_device->sysname; -} - -/** - * udev_device_get_sysnum: - * @udev_device: udev device - * - * Returns: the trailing number of of the device name - **/ -_public_ const char *udev_device_get_sysnum(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - return udev_device->sysnum; -} - -/** - * udev_device_get_devnode: - * @udev_device: udev device - * - * Retrieve the device node file name belonging to the udev device. - * The path is an absolute path, and starts with the device directory. - * - * Returns: the device node file name of the udev device, or #NULL if no device node exists - **/ -_public_ const char *udev_device_get_devnode(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - if (udev_device->devnode != NULL) - return udev_device->devnode; - if (!udev_device->info_loaded) - udev_device_read_uevent_file(udev_device); - return udev_device->devnode; -} - -/** - * udev_device_get_devlinks_list_entry: - * @udev_device: udev device - * - * Retrieve the list of device links pointing to the device file of - * the udev device. The next list entry can be retrieved with - * udev_list_entry_next(), which returns #NULL if no more entries exist. - * The devlink path can be retrieved from the list entry by - * udev_list_entry_get_name(). The path is an absolute path, and starts with - * the device directory. - * - * Returns: the first entry of the device node link list - **/ -_public_ struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - if (!udev_device->info_loaded) - udev_device_read_db(udev_device, NULL); - return udev_list_get_entry(&udev_device->devlinks_list); -} - -void udev_device_cleanup_devlinks_list(struct udev_device *udev_device) -{ - udev_device->devlinks_uptodate = false; - udev_list_cleanup(&udev_device->devlinks_list); -} - -/** - * udev_device_get_properties_list_entry: - * @udev_device: udev device - * - * Retrieve the list of key/value device properties of the udev - * device. The next list entry can be retrieved with udev_list_entry_next(), - * which returns #NULL if no more entries exist. The property name - * can be retrieved from the list entry by udev_list_get_name(), - * the property value by udev_list_get_value(). - * - * Returns: the first entry of the property list - **/ -_public_ struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - if (!udev_device->info_loaded) { - udev_device_read_uevent_file(udev_device); - udev_device_read_db(udev_device, NULL); - } - if (!udev_device->devlinks_uptodate) { - char symlinks[UTIL_PATH_SIZE]; - struct udev_list_entry *list_entry; - - udev_device->devlinks_uptodate = true; - list_entry = udev_device_get_devlinks_list_entry(udev_device); - if (list_entry != NULL) { - char *s; - size_t l; - - s = symlinks; - l = util_strpcpyl(&s, sizeof(symlinks), udev_list_entry_get_name(list_entry), NULL); - udev_list_entry_foreach(list_entry, udev_list_entry_get_next(list_entry)) - l = util_strpcpyl(&s, l, " ", udev_list_entry_get_name(list_entry), NULL); - udev_device_add_property(udev_device, "DEVLINKS", symlinks); - } - } - if (!udev_device->tags_uptodate) { - udev_device->tags_uptodate = true; - if (udev_device_get_tags_list_entry(udev_device) != NULL) { - char tags[UTIL_PATH_SIZE]; - struct udev_list_entry *list_entry; - char *s; - size_t l; - - s = tags; - l = util_strpcpyl(&s, sizeof(tags), ":", NULL); - udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device)) - l = util_strpcpyl(&s, l, udev_list_entry_get_name(list_entry), ":", NULL); - udev_device_add_property(udev_device, "TAGS", tags); - } - } - return udev_list_get_entry(&udev_device->properties_list); -} - -/** - * udev_device_get_action: - * @udev_device: udev device - * - * This is only valid if the device was received through a monitor. Devices read from - * sys do not have an action string. Usual actions are: add, remove, change, online, - * offline. - * - * Returns: the kernel action value, or #NULL if there is no action value available. - **/ -_public_ const char *udev_device_get_action(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - return udev_device->action; -} - -/** - * udev_device_get_usec_since_initialized: - * @udev_device: udev device - * - * Return the number of microseconds passed since udev set up the - * device for the first time. - * - * This is only implemented for devices with need to store properties - * in the udev database. All other devices return 0 here. - * - * Returns: the number of microseconds since the device was first seen. - **/ -_public_ unsigned long long int udev_device_get_usec_since_initialized(struct udev_device *udev_device) -{ - unsigned long long now; - - if (udev_device == NULL) - return 0; - if (!udev_device->info_loaded) - udev_device_read_db(udev_device, NULL); - if (udev_device->usec_initialized == 0) - return 0; - now = now_usec(); - if (now == 0) - return 0; - return now - udev_device->usec_initialized; -} - -unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device) -{ - return udev_device->usec_initialized; -} - -void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized) -{ - char num[32]; - - udev_device->usec_initialized = usec_initialized; - snprintf(num, sizeof(num), "%llu", usec_initialized); - udev_device_add_property(udev_device, "USEC_INITIALIZED", num); -} - -/** - * udev_device_get_sysattr_value: - * @udev_device: udev device - * @sysattr: attribute name - * - * The retrieved value is cached in the device. Repeated calls will return the same - * value and not open the attribute again. - * - * Returns: the content of a sys attribute file, or #NULL if there is no sys attribute value. - **/ -_public_ const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr) -{ - struct udev_list_entry *list_entry; - char path[UTIL_PATH_SIZE]; - char value[4096]; - struct stat statbuf; - int fd; - ssize_t size; - const char *val = NULL; - - if (udev_device == NULL) - return NULL; - if (sysattr == NULL) - return NULL; - - /* look for possibly already cached result */ - list_entry = udev_list_get_entry(&udev_device->sysattr_value_list); - list_entry = udev_list_entry_get_by_name(list_entry, sysattr); - if (list_entry != NULL) - return udev_list_entry_get_value(list_entry); - - util_strscpyl(path, sizeof(path), udev_device_get_syspath(udev_device), "/", sysattr, NULL); - if (lstat(path, &statbuf) != 0) { - udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, NULL); - goto out; - } - - if (S_ISLNK(statbuf.st_mode)) { - struct udev_device *dev; - - /* - * Some core links return only the last element of the target path, - * these are just values, the paths should not be exposed. - */ - if (strcmp(sysattr, "driver") == 0 || - strcmp(sysattr, "subsystem") == 0 || - strcmp(sysattr, "module") == 0) { - if (util_get_sys_core_link_value(udev_device->udev, sysattr, - udev_device->syspath, value, sizeof(value)) < 0) - return NULL; - list_entry = udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, value); - val = udev_list_entry_get_value(list_entry); - goto out; - } - - /* resolve link to a device and return its syspath */ - util_strscpyl(path, sizeof(path), udev_device->syspath, "/", sysattr, NULL); - dev = udev_device_new_from_syspath(udev_device->udev, path); - if (dev != NULL) { - list_entry = udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, - udev_device_get_syspath(dev)); - val = udev_list_entry_get_value(list_entry); - udev_device_unref(dev); - } - - goto out; - } - - /* skip directories */ - if (S_ISDIR(statbuf.st_mode)) - goto out; - - /* skip non-readable files */ - if ((statbuf.st_mode & S_IRUSR) == 0) - goto out; - - /* read attribute value */ - fd = open(path, O_RDONLY|O_CLOEXEC); - if (fd < 0) - goto out; - size = read(fd, value, sizeof(value)); - close(fd); - if (size < 0) - goto out; - if (size == sizeof(value)) - goto out; - - /* got a valid value, store it in cache and return it */ - value[size] = '\0'; - util_remove_trailing_chars(value, '\n'); - list_entry = udev_list_entry_add(&udev_device->sysattr_value_list, sysattr, value); - val = udev_list_entry_get_value(list_entry); -out: - return val; -} - -static int udev_device_sysattr_list_read(struct udev_device *udev_device) -{ - struct dirent *dent; - DIR *dir; - int num = 0; - - if (udev_device == NULL) - return -1; - if (udev_device->sysattr_list_read) - return 0; - - dir = opendir(udev_device_get_syspath(udev_device)); - if (!dir) - return -1; - - for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { - char path[UTIL_PATH_SIZE]; - struct stat statbuf; - - /* only handle symlinks and regular files */ - if (dent->d_type != DT_LNK && dent->d_type != DT_REG) - continue; - - util_strscpyl(path, sizeof(path), udev_device_get_syspath(udev_device), "/", dent->d_name, NULL); - if (lstat(path, &statbuf) != 0) - continue; - if ((statbuf.st_mode & S_IRUSR) == 0) - continue; - - udev_list_entry_add(&udev_device->sysattr_list, dent->d_name, NULL); - num++; - } - - closedir(dir); - udev_device->sysattr_list_read = true; - - return num; -} - -/** - * udev_device_get_sysattr_list_entry: - * @udev_device: udev device - * - * Retrieve the list of available sysattrs, with value being empty; - * This just return all available sysfs attributes for a particular - * device without reading their values. - * - * Returns: the first entry of the property list - **/ -_public_ struct udev_list_entry *udev_device_get_sysattr_list_entry(struct udev_device *udev_device) -{ - if (!udev_device->sysattr_list_read) { - int ret; - ret = udev_device_sysattr_list_read(udev_device); - if (0 > ret) - return NULL; - } - - return udev_list_get_entry(&udev_device->sysattr_list); -} - -int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath) -{ - const char *pos; - size_t len; - - free(udev_device->syspath); - udev_device->syspath = strdup(syspath); - if (udev_device->syspath == NULL) - return -ENOMEM; - udev_device->devpath = &udev_device->syspath[strlen(udev_get_sys_path(udev_device->udev))]; - udev_device_add_property(udev_device, "DEVPATH", udev_device->devpath); - - pos = strrchr(udev_device->syspath, '/'); - if (pos == NULL) - return -EINVAL; - udev_device->sysname = strdup(&pos[1]); - if (udev_device->sysname == NULL) - return -ENOMEM; - - /* some devices have '!' in their name, change that to '/' */ - len = 0; - while (udev_device->sysname[len] != '\0') { - if (udev_device->sysname[len] == '!') - udev_device->sysname[len] = '/'; - len++; - } - - /* trailing number */ - while (len > 0 && isdigit(udev_device->sysname[--len])) - udev_device->sysnum = &udev_device->sysname[len]; - - /* sysname is completely numeric */ - if (len == 0) - udev_device->sysnum = NULL; - - return 0; -} - -int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode) -{ - free(udev_device->devnode); - if (devnode[0] != '/') { - if (asprintf(&udev_device->devnode, "%s/%s", udev_get_dev_path(udev_device->udev), devnode) < 0) - udev_device->devnode = NULL; - } else { - udev_device->devnode = strdup(devnode); - } - if (udev_device->devnode == NULL) - return -ENOMEM; - udev_device_add_property(udev_device, "DEVNAME", udev_device->devnode); - return 0; -} - -int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink, int unique) -{ - struct udev_list_entry *list_entry; - - udev_device->devlinks_uptodate = false; - list_entry = udev_list_entry_add(&udev_device->devlinks_list, devlink, NULL); - if (list_entry == NULL) - return -ENOMEM; - if (unique) - udev_list_entry_set_num(list_entry, true); - return 0; -} - -const char *udev_device_get_id_filename(struct udev_device *udev_device) -{ - if (udev_device->id_filename == NULL) { - if (udev_device_get_subsystem(udev_device) == NULL) - return NULL; - - if (major(udev_device_get_devnum(udev_device)) > 0) { - /* use dev_t -- b259:131072, c254:0 */ - if (asprintf(&udev_device->id_filename, "%c%u:%u", - strcmp(udev_device_get_subsystem(udev_device), "block") == 0 ? 'b' : 'c', - major(udev_device_get_devnum(udev_device)), - minor(udev_device_get_devnum(udev_device))) < 0) - udev_device->id_filename = NULL; - } else if (udev_device_get_ifindex(udev_device) > 0) { - /* use netdev ifindex -- n3 */ - if (asprintf(&udev_device->id_filename, "n%u", udev_device_get_ifindex(udev_device)) < 0) - udev_device->id_filename = NULL; - } else { - /* - * use $subsys:$syname -- pci:0000:00:1f.2 - * sysname() has '!' translated, get it from devpath - */ - const char *sysname; - sysname = strrchr(udev_device->devpath, '/'); - if (sysname == NULL) - return NULL; - sysname = &sysname[1]; - if (asprintf(&udev_device->id_filename, "+%s:%s", udev_device_get_subsystem(udev_device), sysname) < 0) - udev_device->id_filename = NULL; - } - } - return udev_device->id_filename; -} - -/** - * udev_device_get_is_initialized: - * @udev_device: udev device - * - * Check if udev has already handled the device and has set up - * device node permissions and context, or has renamed a network - * device. - * - * This is only implemented for devices with a device node - * or network interfaces. All other devices return 1 here. - * - * Returns: 1 if the device is set up. 0 otherwise. - **/ -_public_ int udev_device_get_is_initialized(struct udev_device *udev_device) -{ - if (!udev_device->info_loaded) - udev_device_read_db(udev_device, NULL); - return udev_device->is_initialized; -} - -void udev_device_set_is_initialized(struct udev_device *udev_device) -{ - udev_device->is_initialized = true; -} - -int udev_device_add_tag(struct udev_device *udev_device, const char *tag) -{ - if (strchr(tag, ':') != NULL || strchr(tag, ' ') != NULL) - return -EINVAL; - udev_device->tags_uptodate = false; - if (udev_list_entry_add(&udev_device->tags_list, tag, NULL) != NULL) - return 0; - return -ENOMEM; -} - -void udev_device_cleanup_tags_list(struct udev_device *udev_device) -{ - udev_device->tags_uptodate = false; - udev_list_cleanup(&udev_device->tags_list); -} - -/** - * udev_device_get_tags_list_entry: - * @udev_device: udev device - * - * Retrieve the list of tags attached to the udev device. The next - * list entry can be retrieved with udev_list_entry_next(), - * which returns #NULL if no more entries exist. The tag string - * can be retrieved from the list entry by udev_list_get_name(). - * - * Returns: the first entry of the tag list - **/ -_public_ struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_device *udev_device) -{ - if (udev_device == NULL) - return NULL; - if (!udev_device->info_loaded) - udev_device_read_db(udev_device, NULL); - return udev_list_get_entry(&udev_device->tags_list); -} - -_public_ int udev_device_has_tag(struct udev_device *udev_device, const char *tag) -{ - struct udev_list_entry *list_entry; - - if (udev_device == NULL) - return false; - if (!udev_device->info_loaded) - udev_device_read_db(udev_device, NULL); - list_entry = udev_device_get_tags_list_entry(udev_device); - if (udev_list_entry_get_by_name(list_entry, tag) != NULL) - return true; - return false; -} - -#define ENVP_SIZE 128 -#define MONITOR_BUF_SIZE 4096 -static int update_envp_monitor_buf(struct udev_device *udev_device) -{ - struct udev_list_entry *list_entry; - char *s; - size_t l; - unsigned int i; - - /* monitor buffer of property strings */ - free(udev_device->monitor_buf); - udev_device->monitor_buf_len = 0; - udev_device->monitor_buf = malloc(MONITOR_BUF_SIZE); - if (udev_device->monitor_buf == NULL) - return -ENOMEM; - - /* envp array, strings will point into monitor buffer */ - if (udev_device->envp == NULL) - udev_device->envp = malloc(sizeof(char *) * ENVP_SIZE); - if (udev_device->envp == NULL) - return -ENOMEM; - - i = 0; - s = udev_device->monitor_buf; - l = MONITOR_BUF_SIZE; - udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(udev_device)) { - const char *key; - - key = udev_list_entry_get_name(list_entry); - /* skip private variables */ - if (key[0] == '.') - continue; - - /* add string to envp array */ - udev_device->envp[i++] = s; - if (i+1 >= ENVP_SIZE) - return -EINVAL; - - /* add property string to monitor buffer */ - l = util_strpcpyl(&s, l, key, "=", udev_list_entry_get_value(list_entry), NULL); - if (l == 0) - return -EINVAL; - /* advance past the trailing '\0' that util_strpcpyl() guarantees */ - s++; - l--; - } - udev_device->envp[i] = NULL; - udev_device->monitor_buf_len = s - udev_device->monitor_buf; - udev_device->envp_uptodate = true; - return 0; -} - -char **udev_device_get_properties_envp(struct udev_device *udev_device) -{ - if (!udev_device->envp_uptodate) - if (update_envp_monitor_buf(udev_device) != 0) - return NULL; - return udev_device->envp; -} - -ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf) -{ - if (!udev_device->envp_uptodate) - if (update_envp_monitor_buf(udev_device) != 0) - return -EINVAL; - *buf = udev_device->monitor_buf; - return udev_device->monitor_buf_len; -} - -int udev_device_set_action(struct udev_device *udev_device, const char *action) -{ - free(udev_device->action); - udev_device->action = strdup(action); - if (udev_device->action == NULL) - return -ENOMEM; - udev_device_add_property(udev_device, "ACTION", udev_device->action); - return 0; -} - -int udev_device_get_devlink_priority(struct udev_device *udev_device) -{ - if (!udev_device->info_loaded) - udev_device_read_db(udev_device, NULL); - return udev_device->devlink_priority; -} - -int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio) -{ - udev_device->devlink_priority = prio; - return 0; -} - -int udev_device_get_watch_handle(struct udev_device *udev_device) -{ - if (!udev_device->info_loaded) - udev_device_read_db(udev_device, NULL); - return udev_device->watch_handle; -} - -int udev_device_set_watch_handle(struct udev_device *udev_device, int handle) -{ - udev_device->watch_handle = handle; - return 0; -} - -bool udev_device_get_db_persist(struct udev_device *udev_device) -{ - return udev_device->db_persist; -} - -void udev_device_set_db_persist(struct udev_device *udev_device) -{ - udev_device->db_persist = true; -} diff --git a/src/udev/libudev-enumerate.c b/src/udev/libudev-enumerate.c deleted file mode 100644 index 7b9a732ce6..0000000000 --- a/src/udev/libudev-enumerate.c +++ /dev/null @@ -1,936 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2010 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -/** - * SECTION:libudev-enumerate - * @short_description: lookup and sort sys devices - * - * Lookup devices in the sys filesystem, filter devices by properties, - * and return a sorted list of devices. - */ - -struct syspath { - char *syspath; - size_t len; -}; - -/** - * udev_enumerate: - * - * Opaque object representing one device lookup/sort context. - */ -struct udev_enumerate { - struct udev *udev; - int refcount; - struct udev_list sysattr_match_list; - struct udev_list sysattr_nomatch_list; - struct udev_list subsystem_match_list; - struct udev_list subsystem_nomatch_list; - struct udev_list sysname_match_list; - struct udev_list properties_match_list; - struct udev_list tags_match_list; - struct udev_device *parent_match; - struct udev_list devices_list; - struct syspath *devices; - unsigned int devices_cur; - unsigned int devices_max; - bool devices_uptodate:1; - bool match_is_initialized; -}; - -/** - * udev_enumerate_new: - * @udev: udev library context - * - * Returns: an enumeration context - **/ -_public_ struct udev_enumerate *udev_enumerate_new(struct udev *udev) -{ - struct udev_enumerate *udev_enumerate; - - udev_enumerate = calloc(1, sizeof(struct udev_enumerate)); - if (udev_enumerate == NULL) - return NULL; - udev_enumerate->refcount = 1; - udev_enumerate->udev = udev; - udev_list_init(udev, &udev_enumerate->sysattr_match_list, false); - udev_list_init(udev, &udev_enumerate->sysattr_nomatch_list, false); - udev_list_init(udev, &udev_enumerate->subsystem_match_list, true); - udev_list_init(udev, &udev_enumerate->subsystem_nomatch_list, true); - udev_list_init(udev, &udev_enumerate->sysname_match_list, true); - udev_list_init(udev, &udev_enumerate->properties_match_list, false); - udev_list_init(udev, &udev_enumerate->tags_match_list, true); - udev_list_init(udev, &udev_enumerate->devices_list, false); - return udev_enumerate; -} - -/** - * udev_enumerate_ref: - * @udev_enumerate: context - * - * Take a reference of a enumeration context. - * - * Returns: the passed enumeration context - **/ -_public_ struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate) -{ - if (udev_enumerate == NULL) - return NULL; - udev_enumerate->refcount++; - return udev_enumerate; -} - -/** - * udev_enumerate_unref: - * @udev_enumerate: context - * - * Drop a reference of an enumeration context. If the refcount reaches zero, - * all resources of the enumeration context will be released. - **/ -_public_ void udev_enumerate_unref(struct udev_enumerate *udev_enumerate) -{ - unsigned int i; - - if (udev_enumerate == NULL) - return; - udev_enumerate->refcount--; - if (udev_enumerate->refcount > 0) - return; - udev_list_cleanup(&udev_enumerate->sysattr_match_list); - udev_list_cleanup(&udev_enumerate->sysattr_nomatch_list); - udev_list_cleanup(&udev_enumerate->subsystem_match_list); - udev_list_cleanup(&udev_enumerate->subsystem_nomatch_list); - udev_list_cleanup(&udev_enumerate->sysname_match_list); - udev_list_cleanup(&udev_enumerate->properties_match_list); - udev_list_cleanup(&udev_enumerate->tags_match_list); - udev_device_unref(udev_enumerate->parent_match); - udev_list_cleanup(&udev_enumerate->devices_list); - for (i = 0; i < udev_enumerate->devices_cur; i++) - free(udev_enumerate->devices[i].syspath); - free(udev_enumerate->devices); - free(udev_enumerate); -} - -/** - * udev_enumerate_get_udev: - * @udev_enumerate: context - * - * Returns: the udev library context. - */ -_public_ struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate) -{ - if (udev_enumerate == NULL) - return NULL; - return udev_enumerate->udev; -} - -static int syspath_add(struct udev_enumerate *udev_enumerate, const char *syspath) -{ - char *path; - struct syspath *entry; - - /* double array size if needed */ - if (udev_enumerate->devices_cur >= udev_enumerate->devices_max) { - struct syspath *buf; - unsigned int add; - - add = udev_enumerate->devices_max; - if (add < 1024) - add = 1024; - buf = realloc(udev_enumerate->devices, (udev_enumerate->devices_max + add) * sizeof(struct syspath)); - if (buf == NULL) - return -ENOMEM; - udev_enumerate->devices = buf; - udev_enumerate->devices_max += add; - } - - path = strdup(syspath); - if (path == NULL) - return -ENOMEM; - entry = &udev_enumerate->devices[udev_enumerate->devices_cur]; - entry->syspath = path; - entry->len = strlen(path); - udev_enumerate->devices_cur++; - udev_enumerate->devices_uptodate = false; - return 0; -} - -static int syspath_cmp(const void *p1, const void *p2) -{ - const struct syspath *path1 = p1; - const struct syspath *path2 = p2; - size_t len; - int ret; - - len = MIN(path1->len, path2->len); - ret = memcmp(path1->syspath, path2->syspath, len); - if (ret == 0) { - if (path1->len < path2->len) - ret = -1; - else if (path1->len > path2->len) - ret = 1; - } - return ret; -} - -/* For devices that should be moved to the absolute end of the list */ -static bool devices_delay_end(struct udev *udev, const char *syspath) -{ - static const char *delay_device_list[] = { - "/block/md", - "/block/dm-", - NULL - }; - size_t len; - int i; - - len = strlen(udev_get_sys_path(udev)); - for (i = 0; delay_device_list[i] != NULL; i++) { - if (strstr(&syspath[len], delay_device_list[i]) != NULL) - return true; - } - return false; -} - -/* For devices that should just be moved a little bit later, just - * before the point where some common path prefix changes. Returns the - * number of characters that make up that common prefix */ -static size_t devices_delay_later(struct udev *udev, const char *syspath) -{ - const char *c; - - /* For sound cards the control device must be enumerated last - * to make sure it's the final device node that gets ACLs - * applied. Applications rely on this fact and use ACL changes - * on the control node as an indicator that the ACL change of - * the entire sound card completed. The kernel makes this - * guarantee when creating those devices, and hence we should - * too when enumerating them. */ - - if ((c = strstr(syspath, "/sound/card"))) { - c += 11; - c += strcspn(c, "/"); - - if (strncmp(c, "/controlC", 9) == 0) - return c - syspath + 1; - } - - return 0; -} - -/** - * udev_enumerate_get_list_entry: - * @udev_enumerate: context - * - * Returns: the first entry of the sorted list of device paths. - */ -_public_ struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate) -{ - if (udev_enumerate == NULL) - return NULL; - if (!udev_enumerate->devices_uptodate) { - unsigned int i; - unsigned int max; - struct syspath *prev = NULL, *move_later = NULL; - size_t move_later_prefix = 0; - - udev_list_cleanup(&udev_enumerate->devices_list); - qsort(udev_enumerate->devices, udev_enumerate->devices_cur, sizeof(struct syspath), syspath_cmp); - - max = udev_enumerate->devices_cur; - for (i = 0; i < max; i++) { - struct syspath *entry = &udev_enumerate->devices[i]; - - /* skip duplicated entries */ - if (prev != NULL && - entry->len == prev->len && - memcmp(entry->syspath, prev->syspath, entry->len) == 0) - continue; - prev = entry; - - /* skip to be delayed devices, and add them to the end of the list */ - if (devices_delay_end(udev_enumerate->udev, entry->syspath)) { - syspath_add(udev_enumerate, entry->syspath); - /* need to update prev here for the case realloc() gives a different address */ - prev = &udev_enumerate->devices[i]; - continue; - } - - /* skip to be delayed devices, and move the to - * the point where the prefix changes. We can - * only move one item at a time. */ - if (!move_later) { - move_later_prefix = devices_delay_later(udev_enumerate->udev, entry->syspath); - - if (move_later_prefix > 0) { - move_later = entry; - continue; - } - } - - if (move_later && - strncmp(entry->syspath, move_later->syspath, move_later_prefix) != 0) { - - udev_list_entry_add(&udev_enumerate->devices_list, move_later->syspath, NULL); - move_later = NULL; - } - - udev_list_entry_add(&udev_enumerate->devices_list, entry->syspath, NULL); - } - - if (move_later) - udev_list_entry_add(&udev_enumerate->devices_list, move_later->syspath, NULL); - - /* add and cleanup delayed devices from end of list */ - for (i = max; i < udev_enumerate->devices_cur; i++) { - struct syspath *entry = &udev_enumerate->devices[i]; - - udev_list_entry_add(&udev_enumerate->devices_list, entry->syspath, NULL); - free(entry->syspath); - } - udev_enumerate->devices_cur = max; - - udev_enumerate->devices_uptodate = true; - } - return udev_list_get_entry(&udev_enumerate->devices_list); -} - -/** - * udev_enumerate_add_match_subsystem: - * @udev_enumerate: context - * @subsystem: filter for a subsystem of the device to include in the list - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (subsystem == NULL) - return 0; - if (udev_list_entry_add(&udev_enumerate->subsystem_match_list, subsystem, NULL) == NULL) - return -ENOMEM; - return 0; -} - -/** - * udev_enumerate_add_nomatch_subsystem: - * @udev_enumerate: context - * @subsystem: filter for a subsystem of the device to exclude from the list - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (subsystem == NULL) - return 0; - if (udev_list_entry_add(&udev_enumerate->subsystem_nomatch_list, subsystem, NULL) == NULL) - return -ENOMEM; - return 0; -} - -/** - * udev_enumerate_add_match_sysattr: - * @udev_enumerate: context - * @sysattr: filter for a sys attribute at the device to include in the list - * @value: optional value of the sys attribute - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (sysattr == NULL) - return 0; - if (udev_list_entry_add(&udev_enumerate->sysattr_match_list, sysattr, value) == NULL) - return -ENOMEM; - return 0; -} - -/** - * udev_enumerate_add_nomatch_sysattr: - * @udev_enumerate: context - * @sysattr: filter for a sys attribute at the device to exclude from the list - * @value: optional value of the sys attribute - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (sysattr == NULL) - return 0; - if (udev_list_entry_add(&udev_enumerate->sysattr_nomatch_list, sysattr, value) == NULL) - return -ENOMEM; - return 0; -} - -static int match_sysattr_value(struct udev_device *dev, const char *sysattr, const char *match_val) -{ - const char *val = NULL; - bool match = false; - - val = udev_device_get_sysattr_value(dev, sysattr); - if (val == NULL) - goto exit; - if (match_val == NULL) { - match = true; - goto exit; - } - if (fnmatch(match_val, val, 0) == 0) { - match = true; - goto exit; - } -exit: - return match; -} - -/** - * udev_enumerate_add_match_property: - * @udev_enumerate: context - * @property: filter for a property of the device to include in the list - * @value: value of the property - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (property == NULL) - return 0; - if (udev_list_entry_add(&udev_enumerate->properties_match_list, property, value) == NULL) - return -ENOMEM; - return 0; -} - -/** - * udev_enumerate_add_match_tag: - * @udev_enumerate: context - * @tag: filter for a tag of the device to include in the list - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_match_tag(struct udev_enumerate *udev_enumerate, const char *tag) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (tag == NULL) - return 0; - if (udev_list_entry_add(&udev_enumerate->tags_match_list, tag, NULL) == NULL) - return -ENOMEM; - return 0; -} - -/** - * udev_enumerate_add_match_parent: - * @udev_enumerate: context - * @parent: parent device where to start searching - * - * Return the devices on the subtree of one given device. The parent - * itself is included in the list. - * - * A reference for the device is held until the udev_enumerate context - * is cleaned up. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_match_parent(struct udev_enumerate *udev_enumerate, struct udev_device *parent) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (parent == NULL) - return 0; - if (udev_enumerate->parent_match != NULL) - udev_device_unref(udev_enumerate->parent_match); - udev_enumerate->parent_match = udev_device_ref(parent); - return 0; -} - -/** - * udev_enumerate_add_match_is_initialized: - * @udev_enumerate: context - * - * Match only devices which udev has set up already. This makes - * sure, that the device node permissions and context are properly set - * and that network devices are fully renamed. - * - * Usually, devices which are found in the kernel but not already - * handled by udev, have still pending events. Services should subscribe - * to monitor events and wait for these devices to become ready, instead - * of using uninitialized devices. - * - * For now, this will not affect devices which do not have a device node - * and are not network interfaces. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_match_is_initialized(struct udev_enumerate *udev_enumerate) -{ - if (udev_enumerate == NULL) - return -EINVAL; - udev_enumerate->match_is_initialized = true; - return 0; -} - -/** - * udev_enumerate_add_match_sysname: - * @udev_enumerate: context - * @sysname: filter for the name of the device to include in the list - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname) -{ - if (udev_enumerate == NULL) - return -EINVAL; - if (sysname == NULL) - return 0; - if (udev_list_entry_add(&udev_enumerate->sysname_match_list, sysname, NULL) == NULL) - return -ENOMEM; - return 0; -} - -static bool match_sysattr(struct udev_enumerate *udev_enumerate, struct udev_device *dev) -{ - struct udev_list_entry *list_entry; - - /* skip list */ - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->sysattr_nomatch_list)) { - if (match_sysattr_value(dev, udev_list_entry_get_name(list_entry), - udev_list_entry_get_value(list_entry))) - return false; - } - /* include list */ - if (udev_list_get_entry(&udev_enumerate->sysattr_match_list) != NULL) { - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->sysattr_match_list)) { - /* anything that does not match, will make it FALSE */ - if (!match_sysattr_value(dev, udev_list_entry_get_name(list_entry), - udev_list_entry_get_value(list_entry))) - return false; - } - return true; - } - return true; -} - -static bool match_property(struct udev_enumerate *udev_enumerate, struct udev_device *dev) -{ - struct udev_list_entry *list_entry; - bool match = false; - - /* no match always matches */ - if (udev_list_get_entry(&udev_enumerate->properties_match_list) == NULL) - return true; - - /* loop over matches */ - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->properties_match_list)) { - const char *match_key = udev_list_entry_get_name(list_entry); - const char *match_value = udev_list_entry_get_value(list_entry); - struct udev_list_entry *property_entry; - - /* loop over device properties */ - udev_list_entry_foreach(property_entry, udev_device_get_properties_list_entry(dev)) { - const char *dev_key = udev_list_entry_get_name(property_entry); - const char *dev_value = udev_list_entry_get_value(property_entry); - - if (fnmatch(match_key, dev_key, 0) != 0) - continue; - if (match_value == NULL && dev_value == NULL) { - match = true; - goto out; - } - if (match_value == NULL || dev_value == NULL) - continue; - if (fnmatch(match_value, dev_value, 0) == 0) { - match = true; - goto out; - } - } - } -out: - return match; -} - -static bool match_tag(struct udev_enumerate *udev_enumerate, struct udev_device *dev) -{ - struct udev_list_entry *list_entry; - - /* no match always matches */ - if (udev_list_get_entry(&udev_enumerate->tags_match_list) == NULL) - return true; - - /* loop over matches */ - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->tags_match_list)) - if (!udev_device_has_tag(dev, udev_list_entry_get_name(list_entry))) - return false; - - return true; -} - -static bool match_parent(struct udev_enumerate *udev_enumerate, struct udev_device *dev) -{ - const char *parent; - - if (udev_enumerate->parent_match == NULL) - return true; - - parent = udev_device_get_devpath(udev_enumerate->parent_match); - return strncmp(parent, udev_device_get_devpath(dev), strlen(parent)) == 0; -} - -static bool match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname) -{ - struct udev_list_entry *list_entry; - - if (udev_list_get_entry(&udev_enumerate->sysname_match_list) == NULL) - return true; - - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->sysname_match_list)) { - if (fnmatch(udev_list_entry_get_name(list_entry), sysname, 0) != 0) - continue; - return true; - } - return false; -} - -static int scan_dir_and_add_devices(struct udev_enumerate *udev_enumerate, - const char *basedir, const char *subdir1, const char *subdir2) -{ - struct udev *udev = udev_enumerate_get_udev(udev_enumerate); - char path[UTIL_PATH_SIZE]; - size_t l; - char *s; - DIR *dir; - struct dirent *dent; - - s = path; - l = util_strpcpyl(&s, sizeof(path), udev_get_sys_path(udev), "/", basedir, NULL); - if (subdir1 != NULL) - l = util_strpcpyl(&s, l, "/", subdir1, NULL); - if (subdir2 != NULL) - util_strpcpyl(&s, l, "/", subdir2, NULL); - dir = opendir(path); - if (dir == NULL) - return -ENOENT; - for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { - char syspath[UTIL_PATH_SIZE]; - struct udev_device *dev; - - if (dent->d_name[0] == '.') - continue; - - if (!match_sysname(udev_enumerate, dent->d_name)) - continue; - - util_strscpyl(syspath, sizeof(syspath), path, "/", dent->d_name, NULL); - dev = udev_device_new_from_syspath(udev_enumerate->udev, syspath); - if (dev == NULL) - continue; - - if (udev_enumerate->match_is_initialized) { - /* - * All devices with a device node or network interfaces - * possibly need udev to adjust the device node permission - * or context, or rename the interface before it can be - * reliably used from other processes. - * - * For now, we can only check these types of devices, we - * might not store a database, and have no way to find out - * for all other types of devices. - */ - if (!udev_device_get_is_initialized(dev) && - (major(udev_device_get_devnum(dev)) > 0 || udev_device_get_ifindex(dev) > 0)) - goto nomatch; - } - if (!match_parent(udev_enumerate, dev)) - goto nomatch; - if (!match_tag(udev_enumerate, dev)) - goto nomatch; - if (!match_property(udev_enumerate, dev)) - goto nomatch; - if (!match_sysattr(udev_enumerate, dev)) - goto nomatch; - - syspath_add(udev_enumerate, udev_device_get_syspath(dev)); -nomatch: - udev_device_unref(dev); - } - closedir(dir); - return 0; -} - -static bool match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem) -{ - struct udev_list_entry *list_entry; - - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->subsystem_nomatch_list)) { - if (fnmatch(udev_list_entry_get_name(list_entry), subsystem, 0) == 0) - return false; - } - if (udev_list_get_entry(&udev_enumerate->subsystem_match_list) != NULL) { - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->subsystem_match_list)) { - if (fnmatch(udev_list_entry_get_name(list_entry), subsystem, 0) == 0) - return true; - } - return false; - } - return true; -} - -static int scan_dir(struct udev_enumerate *udev_enumerate, const char *basedir, const char *subdir, const char *subsystem) -{ - struct udev *udev = udev_enumerate_get_udev(udev_enumerate); - - char path[UTIL_PATH_SIZE]; - DIR *dir; - struct dirent *dent; - - util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), "/", basedir, NULL); - dir = opendir(path); - if (dir == NULL) - return -1; - for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { - if (dent->d_name[0] == '.') - continue; - if (!match_subsystem(udev_enumerate, subsystem != NULL ? subsystem : dent->d_name)) - continue; - scan_dir_and_add_devices(udev_enumerate, basedir, dent->d_name, subdir); - } - closedir(dir); - return 0; -} - -/** - * udev_enumerate_add_syspath: - * @udev_enumerate: context - * @syspath: path of a device - * - * Add a device to the list of devices, to retrieve it back sorted in dependency order. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath) -{ - struct udev_device *udev_device; - - if (udev_enumerate == NULL) - return -EINVAL; - if (syspath == NULL) - return 0; - /* resolve to real syspath */ - udev_device = udev_device_new_from_syspath(udev_enumerate->udev, syspath); - if (udev_device == NULL) - return -EINVAL; - syspath_add(udev_enumerate, udev_device_get_syspath(udev_device)); - udev_device_unref(udev_device); - return 0; -} - -static int scan_devices_tags(struct udev_enumerate *udev_enumerate) -{ - struct udev *udev = udev_enumerate_get_udev(udev_enumerate); - struct udev_list_entry *list_entry; - - /* scan only tagged devices, use tags reverse-index, instead of searching all devices in /sys */ - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->tags_match_list)) { - DIR *dir; - struct dirent *dent; - char path[UTIL_PATH_SIZE]; - - util_strscpyl(path, sizeof(path), udev_get_run_path(udev), "/tags/", - udev_list_entry_get_name(list_entry), NULL); - dir = opendir(path); - if (dir == NULL) - continue; - for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { - struct udev_device *dev; - - if (dent->d_name[0] == '.') - continue; - - dev = udev_device_new_from_id_filename(udev_enumerate->udev, dent->d_name); - if (dev == NULL) - continue; - - if (!match_subsystem(udev_enumerate, udev_device_get_subsystem(dev))) - goto nomatch; - if (!match_sysname(udev_enumerate, udev_device_get_sysname(dev))) - goto nomatch; - if (!match_parent(udev_enumerate, dev)) - goto nomatch; - if (!match_property(udev_enumerate, dev)) - goto nomatch; - if (!match_sysattr(udev_enumerate, dev)) - goto nomatch; - - syspath_add(udev_enumerate, udev_device_get_syspath(dev)); -nomatch: - udev_device_unref(dev); - } - closedir(dir); - } - return 0; -} - -static int parent_add_child(struct udev_enumerate *enumerate, const char *path) -{ - struct udev_device *dev; - - dev = udev_device_new_from_syspath(enumerate->udev, path); - if (dev == NULL) - return -ENODEV; - - if (!match_subsystem(enumerate, udev_device_get_subsystem(dev))) - return 0; - if (!match_sysname(enumerate, udev_device_get_sysname(dev))) - return 0; - if (!match_property(enumerate, dev)) - return 0; - if (!match_sysattr(enumerate, dev)) - return 0; - - syspath_add(enumerate, udev_device_get_syspath(dev)); - udev_device_unref(dev); - return 1; -} - -static int parent_crawl_children(struct udev_enumerate *enumerate, const char *path, int maxdepth) -{ - DIR *d; - struct dirent *dent; - - d = opendir(path); - if (d == NULL) - return -errno; - - for (dent = readdir(d); dent != NULL; dent = readdir(d)) { - char *child; - - if (dent->d_name[0] == '.') - continue; - if (dent->d_type != DT_DIR) - continue; - if (asprintf(&child, "%s/%s", path, dent->d_name) < 0) - continue; - parent_add_child(enumerate, child); - if (maxdepth > 0) - parent_crawl_children(enumerate, child, maxdepth-1); - free(child); - } - - closedir(d); - return 0; -} - -static int scan_devices_children(struct udev_enumerate *enumerate) -{ - const char *path; - - path = udev_device_get_syspath(enumerate->parent_match); - parent_add_child(enumerate, path); - return parent_crawl_children(enumerate, path, 256); -} - -static int scan_devices_all(struct udev_enumerate *udev_enumerate) -{ - struct udev *udev = udev_enumerate_get_udev(udev_enumerate); - char base[UTIL_PATH_SIZE]; - struct stat statbuf; - - util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/subsystem", NULL); - if (stat(base, &statbuf) == 0) { - /* we have /subsystem/, forget all the old stuff */ - scan_dir(udev_enumerate, "subsystem", "devices", NULL); - } else { - scan_dir(udev_enumerate, "bus", "devices", NULL); - scan_dir(udev_enumerate, "class", NULL, NULL); - } - return 0; -} - -/** - * udev_enumerate_scan_devices: - * @udev_enumerate: udev enumeration context - * - * Returns: 0 on success, otherwise a negative error value. - **/ -_public_ int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate) -{ - if (udev_enumerate == NULL) - return -EINVAL; - - /* efficiently lookup tags only, we maintain a reverse-index */ - if (udev_list_get_entry(&udev_enumerate->tags_match_list) != NULL) - return scan_devices_tags(udev_enumerate); - - /* walk the subtree of one parent device only */ - if (udev_enumerate->parent_match != NULL) - return scan_devices_children(udev_enumerate); - - /* scan devices of all subsystems */ - return scan_devices_all(udev_enumerate); -} - -/** - * udev_enumerate_scan_subsystems: - * @udev_enumerate: udev enumeration context - * - * Returns: 0 on success, otherwise a negative error value. - **/ -_public_ int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate) -{ - struct udev *udev = udev_enumerate_get_udev(udev_enumerate); - char base[UTIL_PATH_SIZE]; - struct stat statbuf; - const char *subsysdir; - - if (udev_enumerate == NULL) - return -EINVAL; - - /* all kernel modules */ - if (match_subsystem(udev_enumerate, "module")) - scan_dir_and_add_devices(udev_enumerate, "module", NULL, NULL); - - util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/subsystem", NULL); - if (stat(base, &statbuf) == 0) - subsysdir = "subsystem"; - else - subsysdir = "bus"; - - /* all subsystems (only buses support coldplug) */ - if (match_subsystem(udev_enumerate, "subsystem")) - scan_dir_and_add_devices(udev_enumerate, subsysdir, NULL, NULL); - - /* all subsystem drivers */ - if (match_subsystem(udev_enumerate, "drivers")) - scan_dir(udev_enumerate, subsysdir, "drivers", "drivers"); - return 0; -} diff --git a/src/udev/libudev-list.c b/src/udev/libudev-list.c deleted file mode 100644 index 054c0a931c..0000000000 --- a/src/udev/libudev-list.c +++ /dev/null @@ -1,340 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -/** - * SECTION:libudev-list - * @short_description: list operation - * - * Libudev list operations. - */ - -/** - * udev_list_entry: - * - * Opaque object representing one entry in a list. An entry contains - * contains a name, and optionally a value. - */ -struct udev_list_entry { - struct udev_list_node node; - struct udev_list *list; - char *name; - char *value; - int num; -}; - -/* the list's head points to itself if empty */ -void udev_list_node_init(struct udev_list_node *list) -{ - list->next = list; - list->prev = list; -} - -int udev_list_node_is_empty(struct udev_list_node *list) -{ - return list->next == list; -} - -static void udev_list_node_insert_between(struct udev_list_node *new, - struct udev_list_node *prev, - struct udev_list_node *next) -{ - next->prev = new; - new->next = next; - new->prev = prev; - prev->next = new; -} - -void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list) -{ - udev_list_node_insert_between(new, list->prev, list); -} - -void udev_list_node_remove(struct udev_list_node *entry) -{ - struct udev_list_node *prev = entry->prev; - struct udev_list_node *next = entry->next; - - next->prev = prev; - prev->next = next; - - entry->prev = NULL; - entry->next = NULL; -} - -/* return list entry which embeds this node */ -static struct udev_list_entry *list_node_to_entry(struct udev_list_node *node) -{ - char *list; - - list = (char *)node; - list -= offsetof(struct udev_list_entry, node); - return (struct udev_list_entry *)list; -} - -void udev_list_init(struct udev *udev, struct udev_list *list, bool unique) -{ - memset(list, 0x00, sizeof(struct udev_list)); - list->udev = udev; - list->unique = unique; - udev_list_node_init(&list->node); -} - -/* insert entry into a list as the last element */ -void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list) -{ - /* inserting before the list head make the node the last node in the list */ - udev_list_node_insert_between(&new->node, list->node.prev, &list->node); - new->list = list; -} - -/* insert entry into a list, before a given existing entry */ -void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry) -{ - udev_list_node_insert_between(&new->node, entry->node.prev, &entry->node); - new->list = entry->list; -} - -/* binary search in sorted array */ -static int list_search(struct udev_list *list, const char *name) -{ - unsigned int first, last; - - first = 0; - last = list->entries_cur; - while (first < last) { - unsigned int i; - int cmp; - - i = (first + last)/2; - cmp = strcmp(name, list->entries[i]->name); - if (cmp < 0) - last = i; - else if (cmp > 0) - first = i+1; - else - return i; - } - - /* not found, return negative insertion-index+1 */ - return -(first+1); -} - -struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value) -{ - struct udev_list_entry *entry; - int i = 0; - - if (list->unique) { - /* lookup existing name or insertion-index */ - i = list_search(list, name); - if (i >= 0) { - entry = list->entries[i]; - - free(entry->value); - if (value == NULL) { - entry->value = NULL; - return entry; - } - entry->value = strdup(value); - if (entry->value == NULL) - return NULL; - return entry; - } - } - - /* add new name */ - entry = calloc(1, sizeof(struct udev_list_entry)); - if (entry == NULL) - return NULL; - entry->name = strdup(name); - if (entry->name == NULL) { - free(entry); - return NULL; - } - if (value != NULL) { - entry->value = strdup(value); - if (entry->value == NULL) { - free(entry->name); - free(entry); - return NULL; - } - } - - if (list->unique) { - /* allocate or enlarge sorted array if needed */ - if (list->entries_cur >= list->entries_max) { - unsigned int add; - - add = list->entries_max; - if (add < 1) - add = 64; - list->entries = realloc(list->entries, (list->entries_max + add) * sizeof(struct udev_list_entry *)); - if (list->entries == NULL) { - free(entry->name); - free(entry->value); - return NULL; - } - list->entries_max += add; - } - - /* the negative i returned the insertion index */ - i = (-i)-1; - - /* insert into sorted list */ - if ((unsigned int)i < list->entries_cur) - udev_list_entry_insert_before(entry, list->entries[i]); - else - udev_list_entry_append(entry, list); - - /* insert into sorted array */ - memmove(&list->entries[i+1], &list->entries[i], - (list->entries_cur - i) * sizeof(struct udev_list_entry *)); - list->entries[i] = entry; - list->entries_cur++; - } else { - udev_list_entry_append(entry, list); - } - - return entry; -} - -void udev_list_entry_delete(struct udev_list_entry *entry) -{ - if (entry->list->entries != NULL) { - int i; - struct udev_list *list = entry->list; - - /* remove entry from sorted array */ - i = list_search(list, entry->name); - if (i >= 0) { - memmove(&list->entries[i], &list->entries[i+1], - ((list->entries_cur-1) - i) * sizeof(struct udev_list_entry *)); - list->entries_cur--; - } - } - - udev_list_node_remove(&entry->node); - free(entry->name); - free(entry->value); - free(entry); -} - -void udev_list_cleanup(struct udev_list *list) -{ - struct udev_list_entry *entry_loop; - struct udev_list_entry *entry_tmp; - - free(list->entries); - list->entries = NULL; - list->entries_cur = 0; - list->entries_max = 0; - udev_list_entry_foreach_safe(entry_loop, entry_tmp, udev_list_get_entry(list)) - udev_list_entry_delete(entry_loop); -} - -struct udev_list_entry *udev_list_get_entry(struct udev_list *list) -{ - if (udev_list_node_is_empty(&list->node)) - return NULL; - return list_node_to_entry(list->node.next); -} - -/** - * udev_list_entry_get_next: - * @list_entry: current entry - * - * Returns: the next entry from the list, #NULL is no more entries are found. - */ -_public_ struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry) -{ - struct udev_list_node *next; - - if (list_entry == NULL) - return NULL; - next = list_entry->node.next; - /* empty list or no more entries */ - if (next == &list_entry->list->node) - return NULL; - return list_node_to_entry(next); -} - -/** - * udev_list_entry_get_by_name: - * @list_entry: current entry - * @name: name string to match - * - * Returns: the entry where @name matched, #NULL if no matching entry is found. - */ -_public_ struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name) -{ - int i; - - if (list_entry == NULL) - return NULL; - - if (!list_entry->list->unique) - return NULL; - - i = list_search(list_entry->list, name); - if (i < 0) - return NULL; - return list_entry->list->entries[i]; -} - -/** - * udev_list_entry_get_name: - * @list_entry: current entry - * - * Returns: the name string of this entry. - */ -_public_ const char *udev_list_entry_get_name(struct udev_list_entry *list_entry) -{ - if (list_entry == NULL) - return NULL; - return list_entry->name; -} - -/** - * udev_list_entry_get_value: - * @list_entry: current entry - * - * Returns: the value string of this entry. - */ -_public_ const char *udev_list_entry_get_value(struct udev_list_entry *list_entry) -{ - if (list_entry == NULL) - return NULL; - return list_entry->value; -} - -int udev_list_entry_get_num(struct udev_list_entry *list_entry) -{ - if (list_entry == NULL) - return -EINVAL; - return list_entry->num; -} - -void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num) -{ - if (list_entry == NULL) - return; - list_entry->num = num; -} diff --git a/src/udev/libudev-monitor.c b/src/udev/libudev-monitor.c deleted file mode 100644 index 4406b55f97..0000000000 --- a/src/udev/libudev-monitor.c +++ /dev/null @@ -1,782 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2010 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" -#include "socket-util.h" - -/** - * SECTION:libudev-monitor - * @short_description: device event source - * - * Connects to a device event source. - */ - -/** - * udev_monitor: - * - * Opaque object handling an event source. - */ -struct udev_monitor { - struct udev *udev; - int refcount; - int sock; - union sockaddr_union snl; - union sockaddr_union snl_trusted_sender; - union sockaddr_union snl_destination; - socklen_t addrlen; - struct udev_list filter_subsystem_list; - struct udev_list filter_tag_list; - bool bound; -}; - -enum udev_monitor_netlink_group { - UDEV_MONITOR_NONE, - UDEV_MONITOR_KERNEL, - UDEV_MONITOR_UDEV, -}; - -#define UDEV_MONITOR_MAGIC 0xfeedcafe -struct udev_monitor_netlink_header { - /* "libudev" prefix to distinguish libudev and kernel messages */ - char prefix[8]; - /* - * magic to protect against daemon <-> library message format mismatch - * used in the kernel from socket filter rules; needs to be stored in network order - */ - unsigned int magic; - /* total length of header structure known to the sender */ - unsigned int header_size; - /* properties string buffer */ - unsigned int properties_off; - unsigned int properties_len; - /* - * hashes of primary device properties strings, to let libudev subscribers - * use in-kernel socket filters; values need to be stored in network order - */ - unsigned int filter_subsystem_hash; - unsigned int filter_devtype_hash; - unsigned int filter_tag_bloom_hi; - unsigned int filter_tag_bloom_lo; -}; - -static struct udev_monitor *udev_monitor_new(struct udev *udev) -{ - struct udev_monitor *udev_monitor; - - udev_monitor = calloc(1, sizeof(struct udev_monitor)); - if (udev_monitor == NULL) - return NULL; - udev_monitor->refcount = 1; - udev_monitor->udev = udev; - udev_list_init(udev, &udev_monitor->filter_subsystem_list, false); - udev_list_init(udev, &udev_monitor->filter_tag_list, true); - return udev_monitor; -} - -/** - * udev_monitor_new_from_socket: - * @udev: udev library context - * @socket_path: unix socket path - * - * This function is removed from libudev and will not do anything. - * - * Returns: #NULL - **/ -_public_ struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path) -{ - errno = ENOSYS; - return NULL; -} - -struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd) -{ - struct udev_monitor *udev_monitor; - unsigned int group; - - if (udev == NULL) - return NULL; - - if (name == NULL) - group = UDEV_MONITOR_NONE; - else if (strcmp(name, "udev") == 0) - group = UDEV_MONITOR_UDEV; - else if (strcmp(name, "kernel") == 0) - group = UDEV_MONITOR_KERNEL; - else - return NULL; - - udev_monitor = udev_monitor_new(udev); - if (udev_monitor == NULL) - return NULL; - - if (fd < 0) { - udev_monitor->sock = socket(PF_NETLINK, SOCK_RAW|SOCK_CLOEXEC|SOCK_NONBLOCK, NETLINK_KOBJECT_UEVENT); - if (udev_monitor->sock == -1) { - err(udev, "error getting socket: %m\n"); - free(udev_monitor); - return NULL; - } - } else { - udev_monitor->bound = true; - udev_monitor->sock = fd; - } - - udev_monitor->snl.nl.nl_family = AF_NETLINK; - udev_monitor->snl.nl.nl_groups = group; - - /* default destination for sending */ - udev_monitor->snl_destination.nl.nl_family = AF_NETLINK; - udev_monitor->snl_destination.nl.nl_groups = UDEV_MONITOR_UDEV; - - return udev_monitor; -} - -/** - * udev_monitor_new_from_netlink: - * @udev: udev library context - * @name: name of event source - * - * Create new udev monitor and connect to a specified event - * source. Valid sources identifiers are "udev" and "kernel". - * - * Applications should usually not connect directly to the - * "kernel" events, because the devices might not be useable - * at that time, before udev has configured them, and created - * device nodes. Accessing devices at the same time as udev, - * might result in unpredictable behavior. The "udev" events - * are sent out after udev has finished its event processing, - * all rules have been processed, and needed device nodes are - * created. - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev monitor. - * - * Returns: a new udev monitor, or #NULL, in case of an error - **/ -_public_ struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name) -{ - return udev_monitor_new_from_netlink_fd(udev, name, -1); -} - -static inline void bpf_stmt(struct sock_filter *inss, unsigned int *i, - unsigned short code, unsigned int data) -{ - struct sock_filter *ins = &inss[*i]; - - ins->code = code; - ins->k = data; - (*i)++; -} - -static inline void bpf_jmp(struct sock_filter *inss, unsigned int *i, - unsigned short code, unsigned int data, - unsigned short jt, unsigned short jf) -{ - struct sock_filter *ins = &inss[*i]; - - ins->code = code; - ins->jt = jt; - ins->jf = jf; - ins->k = data; - (*i)++; -} - -/** - * udev_monitor_filter_update: - * @udev_monitor: monitor - * - * Update the installed socket filter. This is only needed, - * if the filter was removed or changed. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_monitor_filter_update(struct udev_monitor *udev_monitor) -{ - struct sock_filter ins[512]; - struct sock_fprog filter; - unsigned int i; - struct udev_list_entry *list_entry; - int err; - - if (udev_list_get_entry(&udev_monitor->filter_subsystem_list) == NULL && - udev_list_get_entry(&udev_monitor->filter_tag_list) == NULL) - return 0; - - memset(ins, 0x00, sizeof(ins)); - i = 0; - - /* load magic in A */ - bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, magic)); - /* jump if magic matches */ - bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, UDEV_MONITOR_MAGIC, 1, 0); - /* wrong magic, pass packet */ - bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff); - - if (udev_list_get_entry(&udev_monitor->filter_tag_list) != NULL) { - int tag_matches; - - /* count tag matches, to calculate end of tag match block */ - tag_matches = 0; - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_tag_list)) - tag_matches++; - - /* add all tags matches */ - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_tag_list)) { - uint64_t tag_bloom_bits = util_string_bloom64(udev_list_entry_get_name(list_entry)); - uint32_t tag_bloom_hi = tag_bloom_bits >> 32; - uint32_t tag_bloom_lo = tag_bloom_bits & 0xffffffff; - - /* load device bloom bits in A */ - bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_tag_bloom_hi)); - /* clear bits (tag bits & bloom bits) */ - bpf_stmt(ins, &i, BPF_ALU|BPF_AND|BPF_K, tag_bloom_hi); - /* jump to next tag if it does not match */ - bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, tag_bloom_hi, 0, 3); - - /* load device bloom bits in A */ - bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_tag_bloom_lo)); - /* clear bits (tag bits & bloom bits) */ - bpf_stmt(ins, &i, BPF_ALU|BPF_AND|BPF_K, tag_bloom_lo); - /* jump behind end of tag match block if tag matches */ - tag_matches--; - bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, tag_bloom_lo, 1 + (tag_matches * 6), 0); - } - - /* nothing matched, drop packet */ - bpf_stmt(ins, &i, BPF_RET|BPF_K, 0); - } - - /* add all subsystem matches */ - if (udev_list_get_entry(&udev_monitor->filter_subsystem_list) != NULL) { - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_subsystem_list)) { - unsigned int hash = util_string_hash32(udev_list_entry_get_name(list_entry)); - - /* load device subsystem value in A */ - bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_subsystem_hash)); - if (udev_list_entry_get_value(list_entry) == NULL) { - /* jump if subsystem does not match */ - bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, hash, 0, 1); - } else { - /* jump if subsystem does not match */ - bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, hash, 0, 3); - - /* load device devtype value in A */ - bpf_stmt(ins, &i, BPF_LD|BPF_W|BPF_ABS, offsetof(struct udev_monitor_netlink_header, filter_devtype_hash)); - /* jump if value does not match */ - hash = util_string_hash32(udev_list_entry_get_value(list_entry)); - bpf_jmp(ins, &i, BPF_JMP|BPF_JEQ|BPF_K, hash, 0, 1); - } - - /* matched, pass packet */ - bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff); - - if (i+1 >= ARRAY_SIZE(ins)) - return -1; - } - - /* nothing matched, drop packet */ - bpf_stmt(ins, &i, BPF_RET|BPF_K, 0); - } - - /* matched, pass packet */ - bpf_stmt(ins, &i, BPF_RET|BPF_K, 0xffffffff); - - /* install filter */ - memset(&filter, 0x00, sizeof(filter)); - filter.len = i; - filter.filter = ins; - err = setsockopt(udev_monitor->sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)); - return err; -} - -int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender) -{ - udev_monitor->snl_trusted_sender.nl.nl_pid = sender->snl.nl.nl_pid; - return 0; -} -/** - * udev_monitor_enable_receiving: - * @udev_monitor: the monitor which should receive events - * - * Binds the @udev_monitor socket to the event source. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor) -{ - int err = 0; - const int on = 1; - - if (udev_monitor->snl.nl.nl_family == 0) - return -EINVAL; - - udev_monitor_filter_update(udev_monitor); - - if (!udev_monitor->bound) { - err = bind(udev_monitor->sock, - &udev_monitor->snl.sa, sizeof(struct sockaddr_nl)); - if (err == 0) - udev_monitor->bound = true; - } - - if (err >= 0) { - union sockaddr_union snl; - socklen_t addrlen; - - /* - * get the address the kernel has assigned us - * it is usually, but not necessarily the pid - */ - addrlen = sizeof(struct sockaddr_nl); - err = getsockname(udev_monitor->sock, &snl.sa, &addrlen); - if (err == 0) - udev_monitor->snl.nl.nl_pid = snl.nl.nl_pid; - } else { - err(udev_monitor->udev, "bind failed: %m\n"); - return err; - } - - /* enable receiving of sender credentials */ - setsockopt(udev_monitor->sock, SOL_SOCKET, SO_PASSCRED, &on, sizeof(on)); - return 0; -} - -/** - * udev_monitor_set_receive_buffer_size: - * @udev_monitor: the monitor which should receive events - * @size: the size in bytes - * - * Set the size of the kernel socket buffer. This call needs the - * appropriate privileges to succeed. - * - * Returns: 0 on success, otherwise -1 on error. - */ -_public_ int udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_monitor, int size) -{ - if (udev_monitor == NULL) - return -1; - return setsockopt(udev_monitor->sock, SOL_SOCKET, SO_RCVBUFFORCE, &size, sizeof(size)); -} - -int udev_monitor_disconnect(struct udev_monitor *udev_monitor) -{ - int err; - - err = close(udev_monitor->sock); - udev_monitor->sock = -1; - return err; -} - -/** - * udev_monitor_ref: - * @udev_monitor: udev monitor - * - * Take a reference of a udev monitor. - * - * Returns: the passed udev monitor - **/ -_public_ struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor) -{ - if (udev_monitor == NULL) - return NULL; - udev_monitor->refcount++; - return udev_monitor; -} - -/** - * udev_monitor_unref: - * @udev_monitor: udev monitor - * - * Drop a reference of a udev monitor. If the refcount reaches zero, - * the bound socket will be closed, and the resources of the monitor - * will be released. - * - **/ -_public_ void udev_monitor_unref(struct udev_monitor *udev_monitor) -{ - if (udev_monitor == NULL) - return; - udev_monitor->refcount--; - if (udev_monitor->refcount > 0) - return; - if (udev_monitor->sock >= 0) - close(udev_monitor->sock); - udev_list_cleanup(&udev_monitor->filter_subsystem_list); - udev_list_cleanup(&udev_monitor->filter_tag_list); - free(udev_monitor); -} - -/** - * udev_monitor_get_udev: - * @udev_monitor: udev monitor - * - * Retrieve the udev library context the monitor was created with. - * - * Returns: the udev library context - **/ -_public_ struct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor) -{ - if (udev_monitor == NULL) - return NULL; - return udev_monitor->udev; -} - -/** - * udev_monitor_get_fd: - * @udev_monitor: udev monitor - * - * Retrieve the socket file descriptor associated with the monitor. - * - * Returns: the socket file descriptor - **/ -_public_ int udev_monitor_get_fd(struct udev_monitor *udev_monitor) -{ - if (udev_monitor == NULL) - return -1; - return udev_monitor->sock; -} - -static int passes_filter(struct udev_monitor *udev_monitor, struct udev_device *udev_device) -{ - struct udev_list_entry *list_entry; - - if (udev_list_get_entry(&udev_monitor->filter_subsystem_list) == NULL) - goto tag; - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_subsystem_list)) { - const char *subsys = udev_list_entry_get_name(list_entry); - const char *dsubsys = udev_device_get_subsystem(udev_device); - const char *devtype; - const char *ddevtype; - - if (strcmp(dsubsys, subsys) != 0) - continue; - - devtype = udev_list_entry_get_value(list_entry); - if (devtype == NULL) - goto tag; - ddevtype = udev_device_get_devtype(udev_device); - if (ddevtype == NULL) - continue; - if (strcmp(ddevtype, devtype) == 0) - goto tag; - } - return 0; - -tag: - if (udev_list_get_entry(&udev_monitor->filter_tag_list) == NULL) - return 1; - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_monitor->filter_tag_list)) { - const char *tag = udev_list_entry_get_name(list_entry); - - if (udev_device_has_tag(udev_device, tag)) - return 1; - } - return 0; -} - -/** - * udev_monitor_receive_device: - * @udev_monitor: udev monitor - * - * Receive data from the udev monitor socket, allocate a new udev - * device, fill in the received data, and return the device. - * - * Only socket connections with uid=0 are accepted. - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev device. - * - * Returns: a new udev device, or #NULL, in case of an error - **/ -_public_ struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor) -{ - struct udev_device *udev_device; - struct msghdr smsg; - struct iovec iov; - char cred_msg[CMSG_SPACE(sizeof(struct ucred))]; - struct cmsghdr *cmsg; - union sockaddr_union snl; - struct ucred *cred; - char buf[8192]; - ssize_t buflen; - ssize_t bufpos; - struct udev_monitor_netlink_header *nlh; - -retry: - if (udev_monitor == NULL) - return NULL; - iov.iov_base = &buf; - iov.iov_len = sizeof(buf); - memset (&smsg, 0x00, sizeof(struct msghdr)); - smsg.msg_iov = &iov; - smsg.msg_iovlen = 1; - smsg.msg_control = cred_msg; - smsg.msg_controllen = sizeof(cred_msg); - - if (udev_monitor->snl.nl.nl_family != 0) { - smsg.msg_name = &snl; - smsg.msg_namelen = sizeof(snl); - } - - buflen = recvmsg(udev_monitor->sock, &smsg, 0); - if (buflen < 0) { - if (errno != EINTR) - dbg(udev_monitor->udev, "unable to receive message\n"); - return NULL; - } - - if (buflen < 32 || (size_t)buflen >= sizeof(buf)) { - dbg(udev_monitor->udev, "invalid message length\n"); - return NULL; - } - - if (udev_monitor->snl.nl.nl_family != 0) { - if (snl.nl.nl_groups == 0) { - /* unicast message, check if we trust the sender */ - if (udev_monitor->snl_trusted_sender.nl.nl_pid == 0 || - snl.nl.nl_pid != udev_monitor->snl_trusted_sender.nl.nl_pid) { - dbg(udev_monitor->udev, "unicast netlink message ignored\n"); - return NULL; - } - } else if (snl.nl.nl_groups == UDEV_MONITOR_KERNEL) { - if (snl.nl.nl_pid > 0) { - dbg(udev_monitor->udev, "multicast kernel netlink message from pid %d ignored\n", - snl.nl.nl_pid); - return NULL; - } - } - } - - cmsg = CMSG_FIRSTHDR(&smsg); - if (cmsg == NULL || cmsg->cmsg_type != SCM_CREDENTIALS) { - dbg(udev_monitor->udev, "no sender credentials received, message ignored\n"); - return NULL; - } - - cred = (struct ucred *)CMSG_DATA(cmsg); - if (cred->uid != 0) { - dbg(udev_monitor->udev, "sender uid=%d, message ignored\n", cred->uid); - return NULL; - } - - if (memcmp(buf, "libudev", 8) == 0) { - /* udev message needs proper version magic */ - nlh = (struct udev_monitor_netlink_header *) buf; - if (nlh->magic != htonl(UDEV_MONITOR_MAGIC)) { - err(udev_monitor->udev, "unrecognized message signature (%x != %x)\n", - nlh->magic, htonl(UDEV_MONITOR_MAGIC)); - return NULL; - } - if (nlh->properties_off+32 > buflen) - return NULL; - bufpos = nlh->properties_off; - } else { - /* kernel message with header */ - bufpos = strlen(buf) + 1; - if ((size_t)bufpos < sizeof("a@/d") || bufpos >= buflen) { - dbg(udev_monitor->udev, "invalid message length\n"); - return NULL; - } - - /* check message header */ - if (strstr(buf, "@/") == NULL) { - dbg(udev_monitor->udev, "unrecognized message header\n"); - return NULL; - } - } - - udev_device = udev_device_new(udev_monitor->udev); - if (udev_device == NULL) - return NULL; - udev_device_set_info_loaded(udev_device); - - while (bufpos < buflen) { - char *key; - size_t keylen; - - key = &buf[bufpos]; - keylen = strlen(key); - if (keylen == 0) - break; - bufpos += keylen + 1; - udev_device_add_property_from_string_parse(udev_device, key); - } - - if (udev_device_add_property_from_string_parse_finish(udev_device) < 0) { - dbg(udev_monitor->udev, "missing values, invalid device\n"); - udev_device_unref(udev_device); - return NULL; - } - - /* skip device, if it does not pass the current filter */ - if (!passes_filter(udev_monitor, udev_device)) { - struct pollfd pfd[1]; - int rc; - - udev_device_unref(udev_device); - - /* if something is queued, get next device */ - pfd[0].fd = udev_monitor->sock; - pfd[0].events = POLLIN; - rc = poll(pfd, 1, 0); - if (rc > 0) - goto retry; - return NULL; - } - - return udev_device; -} - -int udev_monitor_send_device(struct udev_monitor *udev_monitor, - struct udev_monitor *destination, struct udev_device *udev_device) -{ - const char *buf; - ssize_t blen; - ssize_t count; - struct msghdr smsg; - struct iovec iov[2]; - const char *val; - struct udev_monitor_netlink_header nlh; - struct udev_list_entry *list_entry; - uint64_t tag_bloom_bits; - - if (udev_monitor->snl.nl.nl_family == 0) - return -EINVAL; - - blen = udev_device_get_properties_monitor_buf(udev_device, &buf); - if (blen < 32) - return -EINVAL; - - /* add versioned header */ - memset(&nlh, 0x00, sizeof(struct udev_monitor_netlink_header)); - memcpy(nlh.prefix, "libudev", 8); - nlh.magic = htonl(UDEV_MONITOR_MAGIC); - nlh.header_size = sizeof(struct udev_monitor_netlink_header); - val = udev_device_get_subsystem(udev_device); - nlh.filter_subsystem_hash = htonl(util_string_hash32(val)); - val = udev_device_get_devtype(udev_device); - if (val != NULL) - nlh.filter_devtype_hash = htonl(util_string_hash32(val)); - iov[0].iov_base = &nlh; - iov[0].iov_len = sizeof(struct udev_monitor_netlink_header); - - /* add tag bloom filter */ - tag_bloom_bits = 0; - udev_list_entry_foreach(list_entry, udev_device_get_tags_list_entry(udev_device)) - tag_bloom_bits |= util_string_bloom64(udev_list_entry_get_name(list_entry)); - if (tag_bloom_bits > 0) { - nlh.filter_tag_bloom_hi = htonl(tag_bloom_bits >> 32); - nlh.filter_tag_bloom_lo = htonl(tag_bloom_bits & 0xffffffff); - } - - /* add properties list */ - nlh.properties_off = iov[0].iov_len; - nlh.properties_len = blen; - iov[1].iov_base = (char *)buf; - iov[1].iov_len = blen; - - memset(&smsg, 0x00, sizeof(struct msghdr)); - smsg.msg_iov = iov; - smsg.msg_iovlen = 2; - /* - * Use custom address for target, or the default one. - * - * If we send to a multicast group, we will get - * ECONNREFUSED, which is expected. - */ - if (destination != NULL) - smsg.msg_name = &destination->snl; - else - smsg.msg_name = &udev_monitor->snl_destination; - smsg.msg_namelen = sizeof(struct sockaddr_nl); - count = sendmsg(udev_monitor->sock, &smsg, 0); - dbg(udev_monitor->udev, "passed %zi bytes to netlink monitor %p\n", count, udev_monitor); - return count; -} - -/** - * udev_monitor_filter_add_match_subsystem_devtype: - * @udev_monitor: the monitor - * @subsystem: the subsystem value to match the incoming devices against - * @devtype: the devtype value to match the incoming devices against - * - * This filter is efficiently executed inside the kernel, and libudev subscribers - * will usually not be woken up for devices which do not match. - * - * The filter must be installed before the monitor is switched to listening mode. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, const char *subsystem, const char *devtype) -{ - if (udev_monitor == NULL) - return -EINVAL; - if (subsystem == NULL) - return -EINVAL; - if (udev_list_entry_add(&udev_monitor->filter_subsystem_list, subsystem, devtype) == NULL) - return -ENOMEM; - return 0; -} - -/** - * udev_monitor_filter_add_match_tag: - * @udev_monitor: the monitor - * @tag: the name of a tag - * - * This filter is efficiently executed inside the kernel, and libudev subscribers - * will usually not be woken up for devices which do not match. - * - * The filter must be installed before the monitor is switched to listening mode. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_monitor_filter_add_match_tag(struct udev_monitor *udev_monitor, const char *tag) -{ - if (udev_monitor == NULL) - return -EINVAL; - if (tag == NULL) - return -EINVAL; - if (udev_list_entry_add(&udev_monitor->filter_tag_list, tag, NULL) == NULL) - return -ENOMEM; - return 0; -} - -/** - * udev_monitor_filter_remove: - * @udev_monitor: monitor - * - * Remove all filters from monitor. - * - * Returns: 0 on success, otherwise a negative error value. - */ -_public_ int udev_monitor_filter_remove(struct udev_monitor *udev_monitor) -{ - static struct sock_fprog filter = { 0, NULL }; - - udev_list_cleanup(&udev_monitor->filter_subsystem_list); - return setsockopt(udev_monitor->sock, SOL_SOCKET, SO_ATTACH_FILTER, &filter, sizeof(filter)); -} diff --git a/src/udev/libudev-private.h b/src/udev/libudev-private.h deleted file mode 100644 index d914aa4599..0000000000 --- a/src/udev/libudev-private.h +++ /dev/null @@ -1,190 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2012 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#ifndef _LIBUDEV_PRIVATE_H_ -#define _LIBUDEV_PRIVATE_H_ - -#include -#include -#include -#include -#include "macro.h" -#include "libudev.h" - -#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) -#define READ_END 0 -#define WRITE_END 1 - -/* avoid (sometimes expensive) calculations of parameters for debug output */ -#define udev_log_cond(udev, prio, arg...) \ - do { \ - if (udev_get_log_priority(udev) >= prio) \ - udev_log(udev, prio, __FILE__, __LINE__, __FUNCTION__, ## arg); \ - } while (0) - -#define dbg(udev, arg...) udev_log_cond(udev, LOG_DEBUG, ## arg) -#define info(udev, arg...) udev_log_cond(udev, LOG_INFO, ## arg) -#define err(udev, arg...) udev_log_cond(udev, LOG_ERR, ## arg) - -/* libudev.c */ -void udev_log(struct udev *udev, - int priority, const char *file, int line, const char *fn, - const char *format, ...) - __attribute__((format(printf, 6, 7))); -int udev_get_rules_path(struct udev *udev, char **path[], unsigned long long *ts_usec[]); -struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value); -struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev); - -/* libudev-device.c */ -struct udev_device *udev_device_new(struct udev *udev); -struct udev_device *udev_device_new_from_id_filename(struct udev *udev, char *id); -mode_t udev_device_get_devnode_mode(struct udev_device *udev_device); -int udev_device_set_syspath(struct udev_device *udev_device, const char *syspath); -int udev_device_set_devnode(struct udev_device *udev_device, const char *devnode); -int udev_device_add_devlink(struct udev_device *udev_device, const char *devlink, int unique); -void udev_device_cleanup_devlinks_list(struct udev_device *udev_device); -struct udev_list_entry *udev_device_add_property(struct udev_device *udev_device, const char *key, const char *value); -void udev_device_add_property_from_string_parse(struct udev_device *udev_device, const char *property); -int udev_device_add_property_from_string_parse_finish(struct udev_device *udev_device); -char **udev_device_get_properties_envp(struct udev_device *udev_device); -ssize_t udev_device_get_properties_monitor_buf(struct udev_device *udev_device, const char **buf); -int udev_device_read_db(struct udev_device *udev_device, const char *dbfile); -int udev_device_read_uevent_file(struct udev_device *udev_device); -int udev_device_set_action(struct udev_device *udev_device, const char *action); -const char *udev_device_get_devpath_old(struct udev_device *udev_device); -const char *udev_device_get_id_filename(struct udev_device *udev_device); -void udev_device_set_is_initialized(struct udev_device *udev_device); -int udev_device_add_tag(struct udev_device *udev_device, const char *tag); -void udev_device_cleanup_tags_list(struct udev_device *udev_device); -unsigned long long udev_device_get_usec_initialized(struct udev_device *udev_device); -void udev_device_set_usec_initialized(struct udev_device *udev_device, unsigned long long usec_initialized); -int udev_device_get_devlink_priority(struct udev_device *udev_device); -int udev_device_set_devlink_priority(struct udev_device *udev_device, int prio); -int udev_device_get_watch_handle(struct udev_device *udev_device); -int udev_device_set_watch_handle(struct udev_device *udev_device, int handle); -int udev_device_get_ifindex(struct udev_device *udev_device); -void udev_device_set_info_loaded(struct udev_device *device); -bool udev_device_get_db_persist(struct udev_device *udev_device); -void udev_device_set_db_persist(struct udev_device *udev_device); - -/* libudev-device-private.c */ -int udev_device_update_db(struct udev_device *udev_device); -int udev_device_delete_db(struct udev_device *udev_device); -int udev_device_tag_index(struct udev_device *dev, struct udev_device *dev_old, bool add); - -/* libudev-monitor.c - netlink/unix socket communication */ -int udev_monitor_disconnect(struct udev_monitor *udev_monitor); -int udev_monitor_allow_unicast_sender(struct udev_monitor *udev_monitor, struct udev_monitor *sender); -int udev_monitor_send_device(struct udev_monitor *udev_monitor, - struct udev_monitor *destination, struct udev_device *udev_device); -struct udev_monitor *udev_monitor_new_from_netlink_fd(struct udev *udev, const char *name, int fd); - -/* libudev-list.c */ -struct udev_list_node { - struct udev_list_node *next, *prev; -}; -struct udev_list { - struct udev *udev; - struct udev_list_node node; - struct udev_list_entry **entries; - unsigned int entries_cur; - unsigned int entries_max; - bool unique; -}; -#define UDEV_LIST(list) struct udev_list_node list = { &(list), &(list) } -void udev_list_node_init(struct udev_list_node *list); -int udev_list_node_is_empty(struct udev_list_node *list); -void udev_list_node_append(struct udev_list_node *new, struct udev_list_node *list); -void udev_list_node_remove(struct udev_list_node *entry); -#define udev_list_node_foreach(node, list) \ - for (node = (list)->next; \ - node != list; \ - node = (node)->next) -#define udev_list_node_foreach_safe(node, tmp, list) \ - for (node = (list)->next, tmp = (node)->next; \ - node != list; \ - node = tmp, tmp = (tmp)->next) -void udev_list_init(struct udev *udev, struct udev_list *list, bool unique); -void udev_list_cleanup(struct udev_list *list); -struct udev_list_entry *udev_list_get_entry(struct udev_list *list); -struct udev_list_entry *udev_list_entry_add(struct udev_list *list, const char *name, const char *value); -void udev_list_entry_delete(struct udev_list_entry *entry); -void udev_list_entry_insert_before(struct udev_list_entry *new, struct udev_list_entry *entry); -void udev_list_entry_append(struct udev_list_entry *new, struct udev_list *list); -int udev_list_entry_get_num(struct udev_list_entry *list_entry); -void udev_list_entry_set_num(struct udev_list_entry *list_entry, int num); -#define udev_list_entry_foreach_safe(entry, tmp, first) \ - for (entry = first, tmp = udev_list_entry_get_next(entry); \ - entry != NULL; \ - entry = tmp, tmp = udev_list_entry_get_next(tmp)) - -/* libudev-queue.c */ -unsigned long long int udev_get_kernel_seqnum(struct udev *udev); -int udev_queue_read_seqnum(FILE *queue_file, unsigned long long int *seqnum); -ssize_t udev_queue_read_devpath(FILE *queue_file, char *devpath, size_t size); -ssize_t udev_queue_skip_devpath(FILE *queue_file); - -/* libudev-queue-private.c */ -struct udev_queue_export *udev_queue_export_new(struct udev *udev); -struct udev_queue_export *udev_queue_export_unref(struct udev_queue_export *udev_queue_export); -void udev_queue_export_cleanup(struct udev_queue_export *udev_queue_export); -int udev_queue_export_device_queued(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device); -int udev_queue_export_device_finished(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device); - -/* libudev-util.c */ -#define UTIL_PATH_SIZE 1024 -#define UTIL_NAME_SIZE 512 -#define UTIL_LINE_SIZE 16384 -#define UDEV_ALLOWED_CHARS_INPUT "/ $%?," -ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const char *syspath, char *value, size_t size); -int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size); -int util_log_priority(const char *priority); -size_t util_path_encode(const char *src, char *dest, size_t size); -size_t util_path_decode(char *s); -void util_remove_trailing_chars(char *path, char c); -size_t util_strpcpy(char **dest, size_t size, const char *src); -size_t util_strpcpyl(char **dest, size_t size, const char *src, ...) __attribute__((sentinel)); -size_t util_strscpy(char *dest, size_t size, const char *src); -size_t util_strscpyl(char *dest, size_t size, const char *src, ...) __attribute__((sentinel)); -int util_replace_whitespace(const char *str, char *to, size_t len); -int util_replace_chars(char *str, const char *white); -unsigned int util_string_hash32(const char *key); -uint64_t util_string_bloom64(const char *str); - -/* libudev-util-private.c */ -int util_create_path(struct udev *udev, const char *path); -int util_create_path_selinux(struct udev *udev, const char *path); -int util_delete_path(struct udev *udev, const char *path); -uid_t util_lookup_user(struct udev *udev, const char *user); -gid_t util_lookup_group(struct udev *udev, const char *group); -int util_resolve_subsys_kernel(struct udev *udev, const char *string, - char *result, size_t maxsize, int read_value); -unsigned long long ts_usec(const struct timespec *ts); -unsigned long long now_usec(void); - -/* libudev-selinux-private.c */ -#ifndef HAVE_SELINUX -static inline void udev_selinux_init(struct udev *udev) {} -static inline void udev_selinux_exit(struct udev *udev) {} -static inline void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode) {} -static inline void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode) {} -static inline void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode) {} -static inline void udev_selinux_resetfscreatecon(struct udev *udev) {} -#else -void udev_selinux_init(struct udev *udev); -void udev_selinux_exit(struct udev *udev); -void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode); -void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode); -void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode); -void udev_selinux_resetfscreatecon(struct udev *udev); -#endif - -#endif diff --git a/src/udev/libudev-queue-private.c b/src/udev/libudev-queue-private.c deleted file mode 100644 index ca6d229a2c..0000000000 --- a/src/udev/libudev-queue-private.c +++ /dev/null @@ -1,406 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008 Kay Sievers - * Copyright (C) 2009 Alan Jenkins - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -/* - * DISCLAIMER - The file format mentioned here is private to udev/libudev, - * and may be changed without notice. - * - * The udev event queue is exported as a binary log file. - * Each log record consists of a sequence number followed by the device path. - * - * When a new event is queued, its details are appended to the log. - * When the event finishes, a second record is appended to the log - * with the same sequence number but a devpath len of 0. - * - * Example: - * { 0x0000000000000001 } - * { 0x0000000000000001, 0x0019, "/devices/virtual/mem/null" }, - * { 0x0000000000000002, 0x001b, "/devices/virtual/mem/random" }, - * { 0x0000000000000001, 0x0000 }, - * { 0x0000000000000003, 0x0019, "/devices/virtual/mem/zero" }, - * - * Events 2 and 3 are still queued, but event 1 has finished. - * - * The queue does not grow indefinitely. It is periodically re-created - * to remove finished events. Atomic rename() makes this transparent to readers. - * - * The queue file starts with a single sequence number which specifies the - * minimum sequence number in the log that follows. Any events prior to this - * sequence number have already finished. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -static int rebuild_queue_file(struct udev_queue_export *udev_queue_export); - -struct udev_queue_export { - struct udev *udev; - int queued_count; /* number of unfinished events exported in queue file */ - FILE *queue_file; - unsigned long long int seqnum_max; /* earliest sequence number in queue file */ - unsigned long long int seqnum_min; /* latest sequence number in queue file */ - int waste_bytes; /* queue file bytes wasted on finished events */ -}; - -struct udev_queue_export *udev_queue_export_new(struct udev *udev) -{ - struct udev_queue_export *udev_queue_export; - unsigned long long int initial_seqnum; - - if (udev == NULL) - return NULL; - - udev_queue_export = calloc(1, sizeof(struct udev_queue_export)); - if (udev_queue_export == NULL) - return NULL; - udev_queue_export->udev = udev; - - initial_seqnum = udev_get_kernel_seqnum(udev); - udev_queue_export->seqnum_min = initial_seqnum; - udev_queue_export->seqnum_max = initial_seqnum; - - udev_queue_export_cleanup(udev_queue_export); - if (rebuild_queue_file(udev_queue_export) != 0) { - free(udev_queue_export); - return NULL; - } - - return udev_queue_export; -} - -struct udev_queue_export *udev_queue_export_unref(struct udev_queue_export *udev_queue_export) -{ - if (udev_queue_export == NULL) - return NULL; - if (udev_queue_export->queue_file != NULL) - fclose(udev_queue_export->queue_file); - free(udev_queue_export); - return NULL; -} - -void udev_queue_export_cleanup(struct udev_queue_export *udev_queue_export) -{ - char filename[UTIL_PATH_SIZE]; - - if (udev_queue_export == NULL) - return; - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.tmp", NULL); - unlink(filename); - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.bin", NULL); - unlink(filename); -} - -static int skip_to(FILE *file, long offset) -{ - long old_offset; - - /* fseek may drop buffered data, avoid it for small seeks */ - old_offset = ftell(file); - if (offset > old_offset && offset - old_offset <= BUFSIZ) { - size_t skip_bytes = offset - old_offset; - char *buf = alloca(skip_bytes); - - if (fread(buf, skip_bytes, 1, file) != skip_bytes) - return -1; - } - - return fseek(file, offset, SEEK_SET); -} - -struct queue_devpaths { - unsigned int devpaths_first; /* index of first queued event */ - unsigned int devpaths_size; - long devpaths[]; /* seqnum -> offset of devpath in queue file (or 0) */ -}; - -/* - * Returns a table mapping seqnum to devpath file offset for currently queued events. - * devpaths[i] represents the event with seqnum = i + udev_queue_export->seqnum_min. - */ -static struct queue_devpaths *build_index(struct udev_queue_export *udev_queue_export) -{ - struct queue_devpaths *devpaths; - unsigned long long int range; - long devpath_offset; - ssize_t devpath_len; - unsigned long long int seqnum; - unsigned long long int n; - unsigned int i; - - /* seek to the first event in the file */ - rewind(udev_queue_export->queue_file); - udev_queue_read_seqnum(udev_queue_export->queue_file, &seqnum); - - /* allocate the table */ - range = udev_queue_export->seqnum_min - udev_queue_export->seqnum_max; - if (range - 1 > INT_MAX) { - err(udev_queue_export->udev, "queue file overflow\n"); - return NULL; - } - devpaths = calloc(1, sizeof(struct queue_devpaths) + (range + 1) * sizeof(long)); - if (devpaths == NULL) - return NULL; - devpaths->devpaths_size = range + 1; - - /* read all records and populate the table */ - for (;;) { - if (udev_queue_read_seqnum(udev_queue_export->queue_file, &seqnum) < 0) - break; - n = seqnum - udev_queue_export->seqnum_max; - if (n >= devpaths->devpaths_size) - goto read_error; - - devpath_offset = ftell(udev_queue_export->queue_file); - devpath_len = udev_queue_skip_devpath(udev_queue_export->queue_file); - if (devpath_len < 0) - goto read_error; - - if (devpath_len > 0) - devpaths->devpaths[n] = devpath_offset; - else - devpaths->devpaths[n] = 0; - } - - /* find first queued event */ - for (i = 0; i < devpaths->devpaths_size; i++) { - if (devpaths->devpaths[i] != 0) - break; - } - devpaths->devpaths_first = i; - - return devpaths; - -read_error: - err(udev_queue_export->udev, "queue file corrupted\n"); - free(devpaths); - return NULL; -} - -static int rebuild_queue_file(struct udev_queue_export *udev_queue_export) -{ - unsigned long long int seqnum; - struct queue_devpaths *devpaths = NULL; - char filename[UTIL_PATH_SIZE]; - char filename_tmp[UTIL_PATH_SIZE]; - FILE *new_queue_file = NULL; - unsigned int i; - - /* read old queue file */ - if (udev_queue_export->queue_file != NULL) { - devpaths = build_index(udev_queue_export); - if (devpaths != NULL) - udev_queue_export->seqnum_max += devpaths->devpaths_first; - } - if (devpaths == NULL) { - udev_queue_export->queued_count = 0; - udev_queue_export->seqnum_max = udev_queue_export->seqnum_min; - } - - /* create new queue file */ - util_strscpyl(filename_tmp, sizeof(filename_tmp), udev_get_run_path(udev_queue_export->udev), "/queue.tmp", NULL); - new_queue_file = fopen(filename_tmp, "w+"); - if (new_queue_file == NULL) - goto error; - seqnum = udev_queue_export->seqnum_max; - fwrite(&seqnum, 1, sizeof(unsigned long long int), new_queue_file); - - /* copy unfinished events only to the new file */ - if (devpaths != NULL) { - for (i = devpaths->devpaths_first; i < devpaths->devpaths_size; i++) { - char devpath[UTIL_PATH_SIZE]; - int err; - unsigned short devpath_len; - - if (devpaths->devpaths[i] != 0) - { - skip_to(udev_queue_export->queue_file, devpaths->devpaths[i]); - err = udev_queue_read_devpath(udev_queue_export->queue_file, devpath, sizeof(devpath)); - devpath_len = err; - - fwrite(&seqnum, sizeof(unsigned long long int), 1, new_queue_file); - fwrite(&devpath_len, sizeof(unsigned short), 1, new_queue_file); - fwrite(devpath, 1, devpath_len, new_queue_file); - } - seqnum++; - } - free(devpaths); - devpaths = NULL; - } - fflush(new_queue_file); - if (ferror(new_queue_file)) - goto error; - - /* rename the new file on top of the old one */ - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue_export->udev), "/queue.bin", NULL); - if (rename(filename_tmp, filename) != 0) - goto error; - - if (udev_queue_export->queue_file != NULL) - fclose(udev_queue_export->queue_file); - udev_queue_export->queue_file = new_queue_file; - udev_queue_export->waste_bytes = 0; - - return 0; - -error: - err(udev_queue_export->udev, "failed to create queue file: %m\n"); - udev_queue_export_cleanup(udev_queue_export); - - if (udev_queue_export->queue_file != NULL) { - fclose(udev_queue_export->queue_file); - udev_queue_export->queue_file = NULL; - } - if (new_queue_file != NULL) - fclose(new_queue_file); - - if (devpaths != NULL) - free(devpaths); - udev_queue_export->queued_count = 0; - udev_queue_export->waste_bytes = 0; - udev_queue_export->seqnum_max = udev_queue_export->seqnum_min; - - return -1; -} - -static int write_queue_record(struct udev_queue_export *udev_queue_export, - unsigned long long int seqnum, const char *devpath, size_t devpath_len) -{ - unsigned short len; - - if (udev_queue_export->queue_file == NULL) - return -1; - - if (fwrite(&seqnum, sizeof(unsigned long long int), 1, udev_queue_export->queue_file) != 1) - goto write_error; - - len = (devpath_len < USHRT_MAX) ? devpath_len : USHRT_MAX; - if (fwrite(&len, sizeof(unsigned short), 1, udev_queue_export->queue_file) != 1) - goto write_error; - if (len > 0) { - if (fwrite(devpath, 1, len, udev_queue_export->queue_file) != len) - goto write_error; - } - - /* *must* flush output; caller may fork */ - if (fflush(udev_queue_export->queue_file) != 0) - goto write_error; - - return 0; - -write_error: - /* if we failed half way through writing a record to a file, - we should not try to write any further records to it. */ - err(udev_queue_export->udev, "error writing to queue file: %m\n"); - fclose(udev_queue_export->queue_file); - udev_queue_export->queue_file = NULL; - - return -1; -} - -enum device_state { - DEVICE_QUEUED, - DEVICE_FINISHED, -}; - -static inline size_t queue_record_size(size_t devpath_len) -{ - return sizeof(unsigned long long int) + sizeof(unsigned short int) + devpath_len; -} - -static int update_queue(struct udev_queue_export *udev_queue_export, - struct udev_device *udev_device, enum device_state state) -{ - unsigned long long int seqnum = udev_device_get_seqnum(udev_device); - const char *devpath = NULL; - size_t devpath_len = 0; - int bytes; - int err; - - /* FINISHED records have a zero length devpath */ - if (state == DEVICE_QUEUED) { - devpath = udev_device_get_devpath(udev_device); - devpath_len = strlen(devpath); - } - - /* recover from an earlier failed rebuild */ - if (udev_queue_export->queue_file == NULL) { - if (rebuild_queue_file(udev_queue_export) != 0) - return -1; - } - - /* if we're removing the last event from the queue, that's the best time to rebuild it */ - if (state != DEVICE_QUEUED && udev_queue_export->queued_count == 1) { - /* we don't need to read the old queue file */ - fclose(udev_queue_export->queue_file); - udev_queue_export->queue_file = NULL; - rebuild_queue_file(udev_queue_export); - return 0; - } - - /* try to rebuild the queue files before they grow larger than one page. */ - bytes = ftell(udev_queue_export->queue_file) + queue_record_size(devpath_len); - if ((udev_queue_export->waste_bytes > bytes / 2) && bytes > 4096) - rebuild_queue_file(udev_queue_export); - - /* don't record a finished event, if we already dropped the event in a failed rebuild */ - if (seqnum < udev_queue_export->seqnum_max) - return 0; - - /* now write to the queue */ - if (state == DEVICE_QUEUED) { - udev_queue_export->queued_count++; - udev_queue_export->seqnum_min = seqnum; - } else { - udev_queue_export->waste_bytes += queue_record_size(devpath_len) + queue_record_size(0); - udev_queue_export->queued_count--; - } - err = write_queue_record(udev_queue_export, seqnum, devpath, devpath_len); - - /* try to handle ENOSPC */ - if (err != 0 && udev_queue_export->queued_count == 0) { - udev_queue_export_cleanup(udev_queue_export); - err = rebuild_queue_file(udev_queue_export); - } - - return err; -} - -static int update(struct udev_queue_export *udev_queue_export, - struct udev_device *udev_device, enum device_state state) -{ - if (update_queue(udev_queue_export, udev_device, state) != 0) - return -1; - - return 0; -} - -int udev_queue_export_device_queued(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device) -{ - return update(udev_queue_export, udev_device, DEVICE_QUEUED); -} - -int udev_queue_export_device_finished(struct udev_queue_export *udev_queue_export, struct udev_device *udev_device) -{ - return update(udev_queue_export, udev_device, DEVICE_FINISHED); -} diff --git a/src/udev/libudev-queue.c b/src/udev/libudev-queue.c deleted file mode 100644 index 72408d0166..0000000000 --- a/src/udev/libudev-queue.c +++ /dev/null @@ -1,466 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008 Kay Sievers - * Copyright (C) 2009 Alan Jenkins - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -/** - * SECTION:libudev-queue - * @short_description: access to currently active events - * - * The udev daemon processes events asynchronously. All events which do not have - * interdependencies run in parallel. This exports the current state of the - * event processing queue, and the current event sequence numbers from the kernel - * and the udev daemon. - */ - -/** - * udev_queue: - * - * Opaque object representing the current event queue in the udev daemon. - */ -struct udev_queue { - struct udev *udev; - int refcount; - struct udev_list queue_list; -}; - -/** - * udev_queue_new: - * @udev: udev library context - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev queue context. - * - * Returns: the udev queue context, or #NULL on error. - **/ -_public_ struct udev_queue *udev_queue_new(struct udev *udev) -{ - struct udev_queue *udev_queue; - - if (udev == NULL) - return NULL; - - udev_queue = calloc(1, sizeof(struct udev_queue)); - if (udev_queue == NULL) - return NULL; - udev_queue->refcount = 1; - udev_queue->udev = udev; - udev_list_init(udev, &udev_queue->queue_list, false); - return udev_queue; -} - -/** - * udev_queue_ref: - * @udev_queue: udev queue context - * - * Take a reference of a udev queue context. - * - * Returns: the same udev queue context. - **/ -_public_ struct udev_queue *udev_queue_ref(struct udev_queue *udev_queue) -{ - if (udev_queue == NULL) - return NULL; - udev_queue->refcount++; - return udev_queue; -} - -/** - * udev_queue_unref: - * @udev_queue: udev queue context - * - * Drop a reference of a udev queue context. If the refcount reaches zero, - * the resources of the queue context will be released. - **/ -_public_ void udev_queue_unref(struct udev_queue *udev_queue) -{ - if (udev_queue == NULL) - return; - udev_queue->refcount--; - if (udev_queue->refcount > 0) - return; - udev_list_cleanup(&udev_queue->queue_list); - free(udev_queue); -} - -/** - * udev_queue_get_udev: - * @udev_queue: udev queue context - * - * Retrieve the udev library context the queue context was created with. - * - * Returns: the udev library context. - **/ -_public_ struct udev *udev_queue_get_udev(struct udev_queue *udev_queue) -{ - if (udev_queue == NULL) - return NULL; - return udev_queue->udev; -} - -unsigned long long int udev_get_kernel_seqnum(struct udev *udev) -{ - char filename[UTIL_PATH_SIZE]; - unsigned long long int seqnum; - int fd; - char buf[32]; - ssize_t len; - - util_strscpyl(filename, sizeof(filename), udev_get_sys_path(udev), "/kernel/uevent_seqnum", NULL); - fd = open(filename, O_RDONLY|O_CLOEXEC); - if (fd < 0) - return 0; - len = read(fd, buf, sizeof(buf)); - close(fd); - if (len <= 2) - return 0; - buf[len-1] = '\0'; - seqnum = strtoull(buf, NULL, 10); - return seqnum; -} - -/** - * udev_queue_get_kernel_seqnum: - * @udev_queue: udev queue context - * - * Returns: the current kernel event sequence number. - **/ -_public_ unsigned long long int udev_queue_get_kernel_seqnum(struct udev_queue *udev_queue) -{ - unsigned long long int seqnum; - - if (udev_queue == NULL) - return -EINVAL; - - seqnum = udev_get_kernel_seqnum(udev_queue->udev); - return seqnum; -} - -int udev_queue_read_seqnum(FILE *queue_file, unsigned long long int *seqnum) -{ - if (fread(seqnum, sizeof(unsigned long long int), 1, queue_file) != 1) - return -1; - - return 0; -} - -ssize_t udev_queue_skip_devpath(FILE *queue_file) -{ - unsigned short int len; - - if (fread(&len, sizeof(unsigned short int), 1, queue_file) == 1) { - char *devpath = alloca(len); - - /* use fread to skip, fseek might drop buffered data */ - if (fread(devpath, 1, len, queue_file) == len) - return len; - } - - return -1; -} - -ssize_t udev_queue_read_devpath(FILE *queue_file, char *devpath, size_t size) -{ - unsigned short int read_bytes = 0; - unsigned short int len; - - if (fread(&len, sizeof(unsigned short int), 1, queue_file) != 1) - return -1; - - read_bytes = (len < size - 1) ? len : size - 1; - if (fread(devpath, 1, read_bytes, queue_file) != read_bytes) - return -1; - devpath[read_bytes] = '\0'; - - /* if devpath was too long, skip unread characters */ - if (read_bytes != len) { - unsigned short int skip_bytes = len - read_bytes; - char *buf = alloca(skip_bytes); - - if (fread(buf, 1, skip_bytes, queue_file) != skip_bytes) - return -1; - } - - return read_bytes; -} - -static FILE *open_queue_file(struct udev_queue *udev_queue, unsigned long long int *seqnum_start) -{ - char filename[UTIL_PATH_SIZE]; - FILE *queue_file; - - util_strscpyl(filename, sizeof(filename), udev_get_run_path(udev_queue->udev), "/queue.bin", NULL); - queue_file = fopen(filename, "re"); - if (queue_file == NULL) - return NULL; - - if (udev_queue_read_seqnum(queue_file, seqnum_start) < 0) { - err(udev_queue->udev, "corrupt queue file\n"); - fclose(queue_file); - return NULL; - } - - return queue_file; -} - -/** - * udev_queue_get_udev_seqnum: - * @udev_queue: udev queue context - * - * Returns: the last known udev event sequence number. - **/ -_public_ unsigned long long int udev_queue_get_udev_seqnum(struct udev_queue *udev_queue) -{ - unsigned long long int seqnum_udev; - FILE *queue_file; - - queue_file = open_queue_file(udev_queue, &seqnum_udev); - if (queue_file == NULL) - return 0; - - for (;;) { - unsigned long long int seqnum; - ssize_t devpath_len; - - if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) - break; - devpath_len = udev_queue_skip_devpath(queue_file); - if (devpath_len < 0) - break; - if (devpath_len > 0) - seqnum_udev = seqnum; - } - - fclose(queue_file); - return seqnum_udev; -} - -/** - * udev_queue_get_udev_is_active: - * @udev_queue: udev queue context - * - * Returns: a flag indicating if udev is active. - **/ -_public_ int udev_queue_get_udev_is_active(struct udev_queue *udev_queue) -{ - unsigned long long int seqnum_start; - FILE *queue_file; - - queue_file = open_queue_file(udev_queue, &seqnum_start); - if (queue_file == NULL) - return 0; - - fclose(queue_file); - return 1; -} - -/** - * udev_queue_get_queue_is_empty: - * @udev_queue: udev queue context - * - * Returns: a flag indicating if udev is currently handling events. - **/ -_public_ int udev_queue_get_queue_is_empty(struct udev_queue *udev_queue) -{ - unsigned long long int seqnum_kernel; - unsigned long long int seqnum_udev = 0; - int queued = 0; - int is_empty = 0; - FILE *queue_file; - - if (udev_queue == NULL) - return -EINVAL; - queue_file = open_queue_file(udev_queue, &seqnum_udev); - if (queue_file == NULL) - return 1; - - for (;;) { - unsigned long long int seqnum; - ssize_t devpath_len; - - if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) - break; - devpath_len = udev_queue_skip_devpath(queue_file); - if (devpath_len < 0) - break; - - if (devpath_len > 0) { - queued++; - seqnum_udev = seqnum; - } else { - queued--; - } - } - - if (queued > 0) - goto out; - - seqnum_kernel = udev_queue_get_kernel_seqnum(udev_queue); - if (seqnum_udev < seqnum_kernel) - goto out; - - is_empty = 1; - -out: - fclose(queue_file); - return is_empty; -} - -/** - * udev_queue_get_seqnum_sequence_is_finished: - * @udev_queue: udev queue context - * @start: first event sequence number - * @end: last event sequence number - * - * Returns: a flag indicating if any of the sequence numbers in the given range is currently active. - **/ -_public_ int udev_queue_get_seqnum_sequence_is_finished(struct udev_queue *udev_queue, - unsigned long long int start, unsigned long long int end) -{ - unsigned long long int seqnum; - ssize_t devpath_len; - int unfinished; - FILE *queue_file; - - if (udev_queue == NULL) - return -EINVAL; - queue_file = open_queue_file(udev_queue, &seqnum); - if (queue_file == NULL) - return 1; - if (start < seqnum) - start = seqnum; - if (start > end) { - fclose(queue_file); - return 1; - } - if (end - start > INT_MAX - 1) { - fclose(queue_file); - return -EOVERFLOW; - } - - /* - * we might start with 0, and handle the initial seqnum - * only when we find an entry in the queue file - **/ - unfinished = end - start; - - do { - if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) - break; - devpath_len = udev_queue_skip_devpath(queue_file); - if (devpath_len < 0) - break; - - /* - * we might start with an empty or re-build queue file, where - * the initial seqnum is not recorded as finished - */ - if (start == seqnum && devpath_len > 0) - unfinished++; - - if (devpath_len == 0) { - if (seqnum >= start && seqnum <= end) - unfinished--; - } - } while (unfinished > 0); - - fclose(queue_file); - - return (unfinished == 0); -} - -/** - * udev_queue_get_seqnum_is_finished: - * @udev_queue: udev queue context - * @seqnum: sequence number - * - * Returns: a flag indicating if the given sequence number is currently active. - **/ -_public_ int udev_queue_get_seqnum_is_finished(struct udev_queue *udev_queue, unsigned long long int seqnum) -{ - if (!udev_queue_get_seqnum_sequence_is_finished(udev_queue, seqnum, seqnum)) - return 0; - - return 1; -} - -/** - * udev_queue_get_queued_list_entry: - * @udev_queue: udev queue context - * - * Returns: the first entry of the list of queued events. - **/ -_public_ struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_queue *udev_queue) -{ - unsigned long long int seqnum; - FILE *queue_file; - - if (udev_queue == NULL) - return NULL; - udev_list_cleanup(&udev_queue->queue_list); - - queue_file = open_queue_file(udev_queue, &seqnum); - if (queue_file == NULL) - return NULL; - - for (;;) { - char syspath[UTIL_PATH_SIZE]; - char *s; - size_t l; - ssize_t len; - char seqnum_str[32]; - struct udev_list_entry *list_entry; - - if (udev_queue_read_seqnum(queue_file, &seqnum) < 0) - break; - snprintf(seqnum_str, sizeof(seqnum_str), "%llu", seqnum); - - s = syspath; - l = util_strpcpyl(&s, sizeof(syspath), udev_get_sys_path(udev_queue->udev), NULL); - len = udev_queue_read_devpath(queue_file, s, l); - if (len < 0) - break; - - if (len > 0) { - udev_list_entry_add(&udev_queue->queue_list, syspath, seqnum_str); - } else { - udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_queue->queue_list)) { - if (strcmp(seqnum_str, udev_list_entry_get_value(list_entry)) == 0) { - udev_list_entry_delete(list_entry); - break; - } - } - } - } - fclose(queue_file); - - return udev_list_get_entry(&udev_queue->queue_list); -} - -struct udev_list_entry *udev_queue_get_failed_list_entry(struct udev_queue *udev_queue); -_public_ struct udev_list_entry *udev_queue_get_failed_list_entry(struct udev_queue *udev_queue) -{ - errno = ENOSYS; - return NULL; -} diff --git a/src/udev/libudev-selinux-private.c b/src/udev/libudev-selinux-private.c deleted file mode 100644 index d68097f991..0000000000 --- a/src/udev/libudev-selinux-private.c +++ /dev/null @@ -1,109 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -static int selinux_enabled; -security_context_t selinux_prev_scontext; - -void udev_selinux_init(struct udev *udev) -{ - /* record the present security context */ - selinux_enabled = (is_selinux_enabled() > 0); - dbg(udev, "selinux=%i\n", selinux_enabled); - if (!selinux_enabled) - return; - matchpathcon_init_prefix(NULL, udev_get_dev_path(udev)); - if (getfscreatecon(&selinux_prev_scontext) < 0) { - err(udev, "getfscreatecon failed\n"); - selinux_prev_scontext = NULL; - } -} - -void udev_selinux_exit(struct udev *udev) -{ - if (!selinux_enabled) - return; - freecon(selinux_prev_scontext); - selinux_prev_scontext = NULL; -} - -void udev_selinux_lsetfilecon(struct udev *udev, const char *file, unsigned int mode) -{ - security_context_t scontext = NULL; - - if (!selinux_enabled) - return; - if (matchpathcon(file, mode, &scontext) < 0) { - err(udev, "matchpathcon(%s) failed\n", file); - return; - } - if (lsetfilecon(file, scontext) < 0) - err(udev, "setfilecon %s failed: %m\n", file); - freecon(scontext); -} - -void udev_selinux_setfscreatecon(struct udev *udev, const char *file, unsigned int mode) -{ - security_context_t scontext = NULL; - - if (!selinux_enabled) - return; - - if (matchpathcon(file, mode, &scontext) < 0) { - err(udev, "matchpathcon(%s) failed\n", file); - return; - } - if (setfscreatecon(scontext) < 0) - err(udev, "setfscreatecon %s failed: %m\n", file); - freecon(scontext); -} - -void udev_selinux_resetfscreatecon(struct udev *udev) -{ - if (!selinux_enabled) - return; - if (setfscreatecon(selinux_prev_scontext) < 0) - err(udev, "setfscreatecon failed: %m\n"); -} - -void udev_selinux_setfscreateconat(struct udev *udev, int dfd, const char *file, unsigned int mode) -{ - char filename[UTIL_PATH_SIZE]; - - if (!selinux_enabled) - return; - - /* resolve relative filename */ - if (file[0] != '/') { - char procfd[UTIL_PATH_SIZE]; - char target[UTIL_PATH_SIZE]; - ssize_t len; - - snprintf(procfd, sizeof(procfd), "/proc/%u/fd/%u", getpid(), dfd); - len = readlink(procfd, target, sizeof(target)); - if (len <= 0 || len == sizeof(target)) - return; - target[len] = '\0'; - - util_strscpyl(filename, sizeof(filename), target, "/", file, NULL); - file = filename; - } - udev_selinux_setfscreatecon(udev, file, mode); -} diff --git a/src/udev/libudev-util-private.c b/src/udev/libudev-util-private.c deleted file mode 100644 index 44ff02cc33..0000000000 --- a/src/udev/libudev-util-private.c +++ /dev/null @@ -1,239 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2003-2009 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -static int create_path(struct udev *udev, const char *path, bool selinux) -{ - char p[UTIL_PATH_SIZE]; - char *pos; - struct stat stats; - int err; - - util_strscpy(p, sizeof(p), path); - pos = strrchr(p, '/'); - if (pos == NULL) - return 0; - while (pos != p && pos[-1] == '/') - pos--; - if (pos == p) - return 0; - pos[0] = '\0'; - - if (stat(p, &stats) == 0) { - if ((stats.st_mode & S_IFMT) == S_IFDIR) - return 0; - else - return -ENOTDIR; - } - - err = util_create_path(udev, p); - if (err != 0) - return err; - - if (selinux) - udev_selinux_setfscreatecon(udev, p, S_IFDIR|0755); - err = mkdir(p, 0755); - if (err != 0) { - err = -errno; - if (err == -EEXIST && stat(p, &stats) == 0) { - if ((stats.st_mode & S_IFMT) == S_IFDIR) - err = 0; - else - err = -ENOTDIR; - } - } - if (selinux) - udev_selinux_resetfscreatecon(udev); - return err; -} - -int util_create_path(struct udev *udev, const char *path) -{ - return create_path(udev, path, false); -} - -int util_create_path_selinux(struct udev *udev, const char *path) -{ - return create_path(udev, path, true); -} - -int util_delete_path(struct udev *udev, const char *path) -{ - char p[UTIL_PATH_SIZE]; - char *pos; - int err = 0; - - if (path[0] == '/') - while(path[1] == '/') - path++; - util_strscpy(p, sizeof(p), path); - pos = strrchr(p, '/'); - if (pos == p || pos == NULL) - return 0; - - for (;;) { - *pos = '\0'; - pos = strrchr(p, '/'); - - /* don't remove the last one */ - if ((pos == p) || (pos == NULL)) - break; - - err = rmdir(p); - if (err < 0) { - if (errno == ENOENT) - err = 0; - break; - } - } - return err; -} - -uid_t util_lookup_user(struct udev *udev, const char *user) -{ - char *endptr; - struct passwd pwbuf; - struct passwd *pw; - uid_t uid; - size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX); - char *buf = alloca(buflen); - - if (strcmp(user, "root") == 0) - return 0; - uid = strtoul(user, &endptr, 10); - if (endptr[0] == '\0') - return uid; - - errno = getpwnam_r(user, &pwbuf, buf, buflen, &pw); - if (pw != NULL) - return pw->pw_uid; - if (errno == 0 || errno == ENOENT || errno == ESRCH) - err(udev, "specified user '%s' unknown\n", user); - else - err(udev, "error resolving user '%s': %m\n", user); - return 0; -} - -gid_t util_lookup_group(struct udev *udev, const char *group) -{ - char *endptr; - struct group grbuf; - struct group *gr; - gid_t gid = 0; - size_t buflen = sysconf(_SC_GETPW_R_SIZE_MAX); - char *buf = NULL; - - if (strcmp(group, "root") == 0) - return 0; - gid = strtoul(group, &endptr, 10); - if (endptr[0] == '\0') - return gid; - gid = 0; - for (;;) { - char *newbuf; - - newbuf = realloc(buf, buflen); - if (!newbuf) - break; - buf = newbuf; - errno = getgrnam_r(group, &grbuf, buf, buflen, &gr); - if (gr != NULL) { - gid = gr->gr_gid; - } else if (errno == ERANGE) { - buflen *= 2; - continue; - } else if (errno == 0 || errno == ENOENT || errno == ESRCH) { - err(udev, "specified group '%s' unknown\n", group); - } else { - err(udev, "error resolving group '%s': %m\n", group); - } - break; - } - free(buf); - return gid; -} - -/* handle "[/]" format */ -int util_resolve_subsys_kernel(struct udev *udev, const char *string, - char *result, size_t maxsize, int read_value) -{ - char temp[UTIL_PATH_SIZE]; - char *subsys; - char *sysname; - struct udev_device *dev; - char *attr; - - if (string[0] != '[') - return -1; - - util_strscpy(temp, sizeof(temp), string); - - subsys = &temp[1]; - - sysname = strchr(subsys, '/'); - if (sysname == NULL) - return -1; - sysname[0] = '\0'; - sysname = &sysname[1]; - - attr = strchr(sysname, ']'); - if (attr == NULL) - return -1; - attr[0] = '\0'; - attr = &attr[1]; - if (attr[0] == '/') - attr = &attr[1]; - if (attr[0] == '\0') - attr = NULL; - - if (read_value && attr == NULL) - return -1; - - dev = udev_device_new_from_subsystem_sysname(udev, subsys, sysname); - if (dev == NULL) - return -1; - - if (read_value) { - const char *val; - - val = udev_device_get_sysattr_value(dev, attr); - if (val != NULL) - util_strscpy(result, maxsize, val); - else - result[0] = '\0'; - dbg(udev, "value '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result); - } else { - size_t l; - char *s; - - s = result; - l = util_strpcpyl(&s, maxsize, udev_device_get_syspath(dev), NULL); - if (attr != NULL) - util_strpcpyl(&s, l, "/", attr, NULL); - dbg(udev, "path '[%s/%s]%s' is '%s'\n", subsys, sysname, attr, result); - } - udev_device_unref(dev); - return 0; -} diff --git a/src/udev/libudev-util.c b/src/udev/libudev-util.c deleted file mode 100644 index cb17c3f48c..0000000000 --- a/src/udev/libudev-util.c +++ /dev/null @@ -1,566 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2011 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -/** - * SECTION:libudev-util - * @short_description: utils - */ - -ssize_t util_get_sys_core_link_value(struct udev *udev, const char *slink, const char *syspath, char *value, size_t size) -{ - char path[UTIL_PATH_SIZE]; - char target[UTIL_PATH_SIZE]; - ssize_t len; - const char *pos; - - util_strscpyl(path, sizeof(path), syspath, "/", slink, NULL); - len = readlink(path, target, sizeof(target)); - if (len <= 0 || len == (ssize_t)sizeof(target)) - return -1; - target[len] = '\0'; - pos = strrchr(target, '/'); - if (pos == NULL) - return -1; - pos = &pos[1]; - return util_strscpy(value, size, pos); -} - -int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size) -{ - char link_target[UTIL_PATH_SIZE]; - - ssize_t len; - int i; - int back; - char *base = NULL; - - len = readlink(syspath, link_target, sizeof(link_target)); - if (len <= 0 || len == (ssize_t)sizeof(link_target)) - return -1; - link_target[len] = '\0'; - - for (back = 0; strncmp(&link_target[back * 3], "../", 3) == 0; back++) - ; - for (i = 0; i <= back; i++) { - base = strrchr(syspath, '/'); - if (base == NULL) - return -EINVAL; - base[0] = '\0'; - } - if (base == NULL) - return -EINVAL; - util_strscpyl(base, size - (base - syspath), "/", &link_target[back * 3], NULL); - return 0; -} - -int util_log_priority(const char *priority) -{ - char *endptr; - int prio; - - prio = strtol(priority, &endptr, 10); - if (endptr[0] == '\0' || isspace(endptr[0])) - return prio; - if (strncmp(priority, "err", 3) == 0) - return LOG_ERR; - if (strncmp(priority, "info", 4) == 0) - return LOG_INFO; - if (strncmp(priority, "debug", 5) == 0) - return LOG_DEBUG; - return 0; -} - -size_t util_path_encode(const char *src, char *dest, size_t size) -{ - size_t i, j; - - for (i = 0, j = 0; src[i] != '\0'; i++) { - if (src[i] == '/') { - if (j+4 >= size) { - j = 0; - break; - } - memcpy(&dest[j], "\\x2f", 4); - j += 4; - } else if (src[i] == '\\') { - if (j+4 >= size) { - j = 0; - break; - } - memcpy(&dest[j], "\\x5c", 4); - j += 4; - } else { - if (j+1 >= size) { - j = 0; - break; - } - dest[j] = src[i]; - j++; - } - } - dest[j] = '\0'; - return j; -} - -size_t util_path_decode(char *s) -{ - size_t i, j; - - for (i = 0, j = 0; s[i] != '\0'; j++) { - if (memcmp(&s[i], "\\x2f", 4) == 0) { - s[j] = '/'; - i += 4; - } else if (memcmp(&s[i], "\\x5c", 4) == 0) { - s[j] = '\\'; - i += 4; - } else { - s[j] = s[i]; - i++; - } - } - s[j] = '\0'; - return j; -} - -void util_remove_trailing_chars(char *path, char c) -{ - size_t len; - - if (path == NULL) - return; - len = strlen(path); - while (len > 0 && path[len-1] == c) - path[--len] = '\0'; -} - -/* - * Concatenates strings. In any case, terminates in _all_ cases with '\0' - * and moves the @dest pointer forward to the added '\0'. Returns the - * remaining size, and 0 if the string was truncated. - */ -size_t util_strpcpy(char **dest, size_t size, const char *src) -{ - size_t len; - - len = strlen(src); - if (len >= size) { - if (size > 1) - *dest = mempcpy(*dest, src, size-1); - size = 0; - *dest[0] = '\0'; - } else { - if (len > 0) { - *dest = mempcpy(*dest, src, len); - size -= len; - } - *dest[0] = '\0'; - } - return size; -} - -/* concatenates list of strings, moves dest forward */ -size_t util_strpcpyl(char **dest, size_t size, const char *src, ...) -{ - va_list va; - - va_start(va, src); - do { - size = util_strpcpy(dest, size, src); - src = va_arg(va, char *); - } while (src != NULL); - va_end(va); - - return size; -} - -/* copies string */ -size_t util_strscpy(char *dest, size_t size, const char *src) -{ - char *s; - - s = dest; - return util_strpcpy(&s, size, src); -} - -/* concatenates list of strings */ -size_t util_strscpyl(char *dest, size_t size, const char *src, ...) -{ - va_list va; - char *s; - - va_start(va, src); - s = dest; - do { - size = util_strpcpy(&s, size, src); - src = va_arg(va, char *); - } while (src != NULL); - va_end(va); - - return size; -} - -/* count of characters used to encode one unicode char */ -static int utf8_encoded_expected_len(const char *str) -{ - unsigned char c = (unsigned char)str[0]; - - if (c < 0x80) - return 1; - if ((c & 0xe0) == 0xc0) - return 2; - if ((c & 0xf0) == 0xe0) - return 3; - if ((c & 0xf8) == 0xf0) - return 4; - if ((c & 0xfc) == 0xf8) - return 5; - if ((c & 0xfe) == 0xfc) - return 6; - return 0; -} - -/* decode one unicode char */ -static int utf8_encoded_to_unichar(const char *str) -{ - int unichar; - int len; - int i; - - len = utf8_encoded_expected_len(str); - switch (len) { - case 1: - return (int)str[0]; - case 2: - unichar = str[0] & 0x1f; - break; - case 3: - unichar = (int)str[0] & 0x0f; - break; - case 4: - unichar = (int)str[0] & 0x07; - break; - case 5: - unichar = (int)str[0] & 0x03; - break; - case 6: - unichar = (int)str[0] & 0x01; - break; - default: - return -1; - } - - for (i = 1; i < len; i++) { - if (((int)str[i] & 0xc0) != 0x80) - return -1; - unichar <<= 6; - unichar |= (int)str[i] & 0x3f; - } - - return unichar; -} - -/* expected size used to encode one unicode char */ -static int utf8_unichar_to_encoded_len(int unichar) -{ - if (unichar < 0x80) - return 1; - if (unichar < 0x800) - return 2; - if (unichar < 0x10000) - return 3; - if (unichar < 0x200000) - return 4; - if (unichar < 0x4000000) - return 5; - return 6; -} - -/* check if unicode char has a valid numeric range */ -static int utf8_unichar_valid_range(int unichar) -{ - if (unichar > 0x10ffff) - return 0; - if ((unichar & 0xfffff800) == 0xd800) - return 0; - if ((unichar > 0xfdcf) && (unichar < 0xfdf0)) - return 0; - if ((unichar & 0xffff) == 0xffff) - return 0; - return 1; -} - -/* validate one encoded unicode char and return its length */ -static int utf8_encoded_valid_unichar(const char *str) -{ - int len; - int unichar; - int i; - - len = utf8_encoded_expected_len(str); - if (len == 0) - return -1; - - /* ascii is valid */ - if (len == 1) - return 1; - - /* check if expected encoded chars are available */ - for (i = 0; i < len; i++) - if ((str[i] & 0x80) != 0x80) - return -1; - - unichar = utf8_encoded_to_unichar(str); - - /* check if encoded length matches encoded value */ - if (utf8_unichar_to_encoded_len(unichar) != len) - return -1; - - /* check if value has valid range */ - if (!utf8_unichar_valid_range(unichar)) - return -1; - - return len; -} - -int util_replace_whitespace(const char *str, char *to, size_t len) -{ - size_t i, j; - - /* strip trailing whitespace */ - len = strnlen(str, len); - while (len && isspace(str[len-1])) - len--; - - /* strip leading whitespace */ - i = 0; - while (isspace(str[i]) && (i < len)) - i++; - - j = 0; - while (i < len) { - /* substitute multiple whitespace with a single '_' */ - if (isspace(str[i])) { - while (isspace(str[i])) - i++; - to[j++] = '_'; - } - to[j++] = str[i++]; - } - to[j] = '\0'; - return 0; -} - -static int is_whitelisted(char c, const char *white) -{ - if ((c >= '0' && c <= '9') || - (c >= 'A' && c <= 'Z') || - (c >= 'a' && c <= 'z') || - strchr("#+-.:=@_", c) != NULL || - (white != NULL && strchr(white, c) != NULL)) - return 1; - return 0; -} - -/* allow chars in whitelist, plain ascii, hex-escaping and valid utf8 */ -int util_replace_chars(char *str, const char *white) -{ - size_t i = 0; - int replaced = 0; - - while (str[i] != '\0') { - int len; - - if (is_whitelisted(str[i], white)) { - i++; - continue; - } - - /* accept hex encoding */ - if (str[i] == '\\' && str[i+1] == 'x') { - i += 2; - continue; - } - - /* accept valid utf8 */ - len = utf8_encoded_valid_unichar(&str[i]); - if (len > 1) { - i += len; - continue; - } - - /* if space is allowed, replace whitespace with ordinary space */ - if (isspace(str[i]) && white != NULL && strchr(white, ' ') != NULL) { - str[i] = ' '; - i++; - replaced++; - continue; - } - - /* everything else is replaced with '_' */ - str[i] = '_'; - i++; - replaced++; - } - return replaced; -} - -/** - * udev_util_encode_string: - * @str: input string to be encoded - * @str_enc: output string to store the encoded input string - * @len: maximum size of the output string, which may be - * four times as long as the input string - * - * Encode all potentially unsafe characters of a string to the - * corresponding 2 char hex value prefixed by '\x'. - * - * Returns: 0 if the entire string was copied, non-zero otherwise. - **/ -_public_ int udev_util_encode_string(const char *str, char *str_enc, size_t len) -{ - size_t i, j; - - if (str == NULL || str_enc == NULL) - return -1; - - for (i = 0, j = 0; str[i] != '\0'; i++) { - int seqlen; - - seqlen = utf8_encoded_valid_unichar(&str[i]); - if (seqlen > 1) { - if (len-j < (size_t)seqlen) - goto err; - memcpy(&str_enc[j], &str[i], seqlen); - j += seqlen; - i += (seqlen-1); - } else if (str[i] == '\\' || !is_whitelisted(str[i], NULL)) { - if (len-j < 4) - goto err; - sprintf(&str_enc[j], "\\x%02x", (unsigned char) str[i]); - j += 4; - } else { - if (len-j < 1) - goto err; - str_enc[j] = str[i]; - j++; - } - } - if (len-j < 1) - goto err; - str_enc[j] = '\0'; - return 0; -err: - return -1; -} - -/* - * http://sites.google.com/site/murmurhash/ - * - * All code is released to the public domain. For business purposes, - * Murmurhash is under the MIT license. - * - */ -static unsigned int murmur_hash2(const char *key, int len, unsigned int seed) -{ - /* - * 'm' and 'r' are mixing constants generated offline. - * They're not really 'magic', they just happen to work well. - */ - const unsigned int m = 0x5bd1e995; - const int r = 24; - - /* initialize the hash to a 'random' value */ - unsigned int h = seed ^ len; - - /* mix 4 bytes at a time into the hash */ - const unsigned char * data = (const unsigned char *)key; - - while(len >= 4) { - unsigned int k = *(unsigned int *)data; - - k *= m; - k ^= k >> r; - k *= m; - h *= m; - h ^= k; - - data += 4; - len -= 4; - } - - /* handle the last few bytes of the input array */ - switch(len) { - case 3: - h ^= data[2] << 16; - case 2: - h ^= data[1] << 8; - case 1: - h ^= data[0]; - h *= m; - }; - - /* do a few final mixes of the hash to ensure the last few bytes are well-incorporated */ - h ^= h >> 13; - h *= m; - h ^= h >> 15; - - return h; -} - -unsigned int util_string_hash32(const char *str) -{ - return murmur_hash2(str, strlen(str), 0); -} - -/* get a bunch of bit numbers out of the hash, and set the bits in our bit field */ -uint64_t util_string_bloom64(const char *str) -{ - uint64_t bits = 0; - unsigned int hash = util_string_hash32(str); - - bits |= 1LLU << (hash & 63); - bits |= 1LLU << ((hash >> 6) & 63); - bits |= 1LLU << ((hash >> 12) & 63); - bits |= 1LLU << ((hash >> 18) & 63); - return bits; -} - -#define USEC_PER_SEC 1000000ULL -#define NSEC_PER_USEC 1000ULL -unsigned long long ts_usec(const struct timespec *ts) -{ - return (unsigned long long) ts->tv_sec * USEC_PER_SEC + - (unsigned long long) ts->tv_nsec / NSEC_PER_USEC; -} - -unsigned long long now_usec(void) -{ - struct timespec ts; - - if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0) - return 0; - return ts_usec(&ts); -} diff --git a/src/udev/libudev.c b/src/udev/libudev.c deleted file mode 100644 index 74b53cbf1b..0000000000 --- a/src/udev/libudev.c +++ /dev/null @@ -1,449 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2010 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "libudev.h" -#include "libudev-private.h" - -/** - * SECTION:libudev - * @short_description: libudev context - * - * The context contains the default values read from the udev config file, - * and is passed to all library operations. - */ - -/** - * udev: - * - * Opaque object representing the library context. - */ -struct udev { - int refcount; - void (*log_fn)(struct udev *udev, - int priority, const char *file, int line, const char *fn, - const char *format, va_list args); - void *userdata; - char *sys_path; - char *dev_path; - char *rules_path[4]; - unsigned long long rules_path_ts[4]; - int rules_path_count; - char *run_path; - struct udev_list properties_list; - int log_priority; -}; - -void udev_log(struct udev *udev, - int priority, const char *file, int line, const char *fn, - const char *format, ...) -{ - va_list args; - - va_start(args, format); - udev->log_fn(udev, priority, file, line, fn, format, args); - va_end(args); -} - -static void log_stderr(struct udev *udev, - int priority, const char *file, int line, const char *fn, - const char *format, va_list args) -{ - fprintf(stderr, "libudev: %s: ", fn); - vfprintf(stderr, format, args); -} - -/** - * udev_get_userdata: - * @udev: udev library context - * - * Retrieve stored data pointer from library context. This might be useful - * to access from callbacks like a custom logging function. - * - * Returns: stored userdata - **/ -_public_ void *udev_get_userdata(struct udev *udev) -{ - if (udev == NULL) - return NULL; - return udev->userdata; -} - -/** - * udev_set_userdata: - * @udev: udev library context - * @userdata: data pointer - * - * Store custom @userdata in the library context. - **/ -_public_ void udev_set_userdata(struct udev *udev, void *userdata) -{ - if (udev == NULL) - return; - udev->userdata = userdata; -} - -static char *set_value(char **s, const char *v) -{ - free(*s); - *s = strdup(v); - util_remove_trailing_chars(*s, '/'); - return *s; -} - -/** - * udev_new: - * - * Create udev library context. This reads the udev configuration - * file, and fills in the default values. - * - * The initial refcount is 1, and needs to be decremented to - * release the resources of the udev library context. - * - * Returns: a new udev library context - **/ -_public_ struct udev *udev_new(void) -{ - struct udev *udev; - const char *env; - char *config_file = NULL; - FILE *f; - - udev = calloc(1, sizeof(struct udev)); - if (udev == NULL) - return NULL; - udev->refcount = 1; - udev->log_fn = log_stderr; - udev->log_priority = LOG_ERR; - udev_list_init(udev, &udev->properties_list, true); - - /* custom config file */ - env = getenv("UDEV_CONFIG_FILE"); - if (env != NULL) { - if (set_value(&config_file, env) == NULL) - goto err; - udev_add_property(udev, "UDEV_CONFIG_FILE", config_file); - } - - /* default config file */ - if (config_file == NULL) - config_file = strdup(SYSCONFDIR "/udev/udev.conf"); - if (config_file == NULL) - goto err; - - f = fopen(config_file, "re"); - if (f != NULL) { - char line[UTIL_LINE_SIZE]; - int line_nr = 0; - - while (fgets(line, sizeof(line), f)) { - size_t len; - char *key; - char *val; - - line_nr++; - - /* find key */ - key = line; - while (isspace(key[0])) - key++; - - /* comment or empty line */ - if (key[0] == '#' || key[0] == '\0') - continue; - - /* split key/value */ - val = strchr(key, '='); - if (val == NULL) { - err(udev, "missing = in '%s'[%i], skip line\n", config_file, line_nr); - continue; - } - val[0] = '\0'; - val++; - - /* find value */ - while (isspace(val[0])) - val++; - - /* terminate key */ - len = strlen(key); - if (len == 0) - continue; - while (isspace(key[len-1])) - len--; - key[len] = '\0'; - - /* terminate value */ - len = strlen(val); - if (len == 0) - continue; - while (isspace(val[len-1])) - len--; - val[len] = '\0'; - - if (len == 0) - continue; - - /* unquote */ - if (val[0] == '"' || val[0] == '\'') { - if (val[len-1] != val[0]) { - err(udev, "inconsistent quoting in '%s'[%i], skip line\n", config_file, line_nr); - continue; - } - val[len-1] = '\0'; - val++; - } - - if (strcmp(key, "udev_log") == 0) { - udev_set_log_priority(udev, util_log_priority(val)); - continue; - } - if (strcmp(key, "udev_root") == 0) { - set_value(&udev->dev_path, val); - continue; - } - if (strcmp(key, "udev_run") == 0) { - set_value(&udev->run_path, val); - continue; - } - if (strcmp(key, "udev_sys") == 0) { - set_value(&udev->sys_path, val); - continue; - } - if (strcmp(key, "udev_rules") == 0) { - set_value(&udev->rules_path[0], val); - udev->rules_path_count = 1; - continue; - } - } - fclose(f); - } - - /* environment overrides config */ - env = getenv("UDEV_LOG"); - if (env != NULL) - udev_set_log_priority(udev, util_log_priority(env)); - - /* set defaults */ - if (udev->dev_path == NULL) - if (set_value(&udev->dev_path, "/dev") == NULL) - goto err; - - if (udev->sys_path == NULL) - if (set_value(&udev->sys_path, "/sys") == NULL) - goto err; - - if (udev->run_path == NULL) - if (set_value(&udev->run_path, "/run/udev") == NULL) - goto err; - - if (udev->rules_path[0] == NULL) { - /* /usr/lib/udev -- system rules */ - udev->rules_path[0] = strdup(UDEVLIBEXECDIR "/rules.d"); - if (!udev->rules_path[0]) - goto err; - - /* /run/udev -- runtime rules */ - if (asprintf(&udev->rules_path[1], "%s/rules.d", udev->run_path) < 0) - goto err; - - /* /etc/udev -- local administration rules */ - udev->rules_path[2] = strdup(SYSCONFDIR "/udev/rules.d"); - if (!udev->rules_path[2]) - goto err; - - udev->rules_path_count = 3; - } - - free(config_file); - return udev; -err: - free(config_file); - err(udev, "context creation failed\n"); - udev_unref(udev); - return NULL; -} - -/** - * udev_ref: - * @udev: udev library context - * - * Take a reference of the udev library context. - * - * Returns: the passed udev library context - **/ -_public_ struct udev *udev_ref(struct udev *udev) -{ - if (udev == NULL) - return NULL; - udev->refcount++; - return udev; -} - -/** - * udev_unref: - * @udev: udev library context - * - * Drop a reference of the udev library context. If the refcount - * reaches zero, the resources of the context will be released. - * - **/ -_public_ void udev_unref(struct udev *udev) -{ - if (udev == NULL) - return; - udev->refcount--; - if (udev->refcount > 0) - return; - udev_list_cleanup(&udev->properties_list); - free(udev->dev_path); - free(udev->sys_path); - free(udev->rules_path[0]); - free(udev->rules_path[1]); - free(udev->rules_path[2]); - free(udev->run_path); - free(udev); -} - -/** - * udev_set_log_fn: - * @udev: udev library context - * @log_fn: function to be called for logging messages - * - * The built-in logging writes to stderr. It can be - * overridden by a custom function, to plug log messages - * into the users' logging functionality. - * - **/ -_public_ void udev_set_log_fn(struct udev *udev, - void (*log_fn)(struct udev *udev, - int priority, const char *file, int line, const char *fn, - const char *format, va_list args)) -{ - udev->log_fn = log_fn; - dbg(udev, "custom logging function %p registered\n", log_fn); -} - -/** - * udev_get_log_priority: - * @udev: udev library context - * - * The initial logging priority is read from the udev config file - * at startup. - * - * Returns: the current logging priority - **/ -_public_ int udev_get_log_priority(struct udev *udev) -{ - return udev->log_priority; -} - -/** - * udev_set_log_priority: - * @udev: udev library context - * @priority: the new logging priority - * - * Set the current logging priority. The value controls which messages - * are logged. - **/ -_public_ void udev_set_log_priority(struct udev *udev, int priority) -{ - char num[32]; - - udev->log_priority = priority; - snprintf(num, sizeof(num), "%u", udev->log_priority); - udev_add_property(udev, "UDEV_LOG", num); -} - -int udev_get_rules_path(struct udev *udev, char **path[], unsigned long long *stamp_usec[]) -{ - *path = udev->rules_path; - if (stamp_usec) - *stamp_usec = udev->rules_path_ts; - return udev->rules_path_count; -} - -/** - * udev_get_sys_path: - * @udev: udev library context - * - * Retrieve the sysfs mount point. The default is "/sys". For - * testing purposes, it can be overridden with udev_sys= - * in the udev configuration file. - * - * Returns: the sys mount point - **/ -_public_ const char *udev_get_sys_path(struct udev *udev) -{ - if (udev == NULL) - return NULL; - return udev->sys_path; -} - -/** - * udev_get_dev_path: - * @udev: udev library context - * - * Retrieve the device directory path. The default value is "/dev", - * the actual value may be overridden in the udev configuration - * file. - * - * Returns: the device directory path - **/ -_public_ const char *udev_get_dev_path(struct udev *udev) -{ - if (udev == NULL) - return NULL; - return udev->dev_path; -} - -/** - * udev_get_run_path: - * @udev: udev library context - * - * Retrieve the udev runtime directory path. The default is "/run/udev". - * - * Returns: the runtime directory path - **/ -_public_ const char *udev_get_run_path(struct udev *udev) -{ - if (udev == NULL) - return NULL; - return udev->run_path; -} - -struct udev_list_entry *udev_add_property(struct udev *udev, const char *key, const char *value) -{ - if (value == NULL) { - struct udev_list_entry *list_entry; - - list_entry = udev_get_properties_list_entry(udev); - list_entry = udev_list_entry_get_by_name(list_entry, key); - if (list_entry != NULL) - udev_list_entry_delete(list_entry); - return NULL; - } - return udev_list_entry_add(&udev->properties_list, key, value); -} - -struct udev_list_entry *udev_get_properties_list_entry(struct udev *udev) -{ - return udev_list_get_entry(&udev->properties_list); -} diff --git a/src/udev/libudev.h b/src/udev/libudev.h deleted file mode 100644 index 3bcddb2eb3..0000000000 --- a/src/udev/libudev.h +++ /dev/null @@ -1,188 +0,0 @@ -/* - * libudev - interface to udev device information - * - * Copyright (C) 2008-2011 Kay Sievers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - */ - -#ifndef _LIBUDEV_H_ -#define _LIBUDEV_H_ - -#include -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * udev - library context - * - * reads the udev config and system environment - * allows custom logging - */ -struct udev; -struct udev *udev_ref(struct udev *udev); -void udev_unref(struct udev *udev); -struct udev *udev_new(void); -void udev_set_log_fn(struct udev *udev, - void (*log_fn)(struct udev *udev, - int priority, const char *file, int line, const char *fn, - const char *format, va_list args)); -int udev_get_log_priority(struct udev *udev); -void udev_set_log_priority(struct udev *udev, int priority); -const char *udev_get_sys_path(struct udev *udev); -const char *udev_get_dev_path(struct udev *udev); -const char *udev_get_run_path(struct udev *udev); -void *udev_get_userdata(struct udev *udev); -void udev_set_userdata(struct udev *udev, void *userdata); - -/* - * udev_list - * - * access to libudev generated lists - */ -struct udev_list_entry; -struct udev_list_entry *udev_list_entry_get_next(struct udev_list_entry *list_entry); -struct udev_list_entry *udev_list_entry_get_by_name(struct udev_list_entry *list_entry, const char *name); -const char *udev_list_entry_get_name(struct udev_list_entry *list_entry); -const char *udev_list_entry_get_value(struct udev_list_entry *list_entry); -/** - * udev_list_entry_foreach: - * @list_entry: entry to store the current position - * @first_entry: first entry to start with - * - * Helper to iterate over all entries of a list. - */ -#define udev_list_entry_foreach(list_entry, first_entry) \ - for (list_entry = first_entry; \ - list_entry != NULL; \ - list_entry = udev_list_entry_get_next(list_entry)) - -/* - * udev_device - * - * access to sysfs/kernel devices - */ -struct udev_device; -struct udev_device *udev_device_ref(struct udev_device *udev_device); -void udev_device_unref(struct udev_device *udev_device); -struct udev *udev_device_get_udev(struct udev_device *udev_device); -struct udev_device *udev_device_new_from_syspath(struct udev *udev, const char *syspath); -struct udev_device *udev_device_new_from_devnum(struct udev *udev, char type, dev_t devnum); -struct udev_device *udev_device_new_from_subsystem_sysname(struct udev *udev, const char *subsystem, const char *sysname); -struct udev_device *udev_device_new_from_environment(struct udev *udev); -/* udev_device_get_parent_*() does not take a reference on the returned device, it is automatically unref'd with the parent */ -struct udev_device *udev_device_get_parent(struct udev_device *udev_device); -struct udev_device *udev_device_get_parent_with_subsystem_devtype(struct udev_device *udev_device, - const char *subsystem, const char *devtype); -/* retrieve device properties */ -const char *udev_device_get_devpath(struct udev_device *udev_device); -const char *udev_device_get_subsystem(struct udev_device *udev_device); -const char *udev_device_get_devtype(struct udev_device *udev_device); -const char *udev_device_get_syspath(struct udev_device *udev_device); -const char *udev_device_get_sysname(struct udev_device *udev_device); -const char *udev_device_get_sysnum(struct udev_device *udev_device); -const char *udev_device_get_devnode(struct udev_device *udev_device); -int udev_device_get_is_initialized(struct udev_device *udev_device); -struct udev_list_entry *udev_device_get_devlinks_list_entry(struct udev_device *udev_device); -struct udev_list_entry *udev_device_get_properties_list_entry(struct udev_device *udev_device); -struct udev_list_entry *udev_device_get_tags_list_entry(struct udev_device *udev_device); -struct udev_list_entry *udev_device_get_sysattr_list_entry(struct udev_device *udev_device); -const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key); -const char *udev_device_get_driver(struct udev_device *udev_device); -dev_t udev_device_get_devnum(struct udev_device *udev_device); -const char *udev_device_get_action(struct udev_device *udev_device); -unsigned long long int udev_device_get_seqnum(struct udev_device *udev_device); -unsigned long long int udev_device_get_usec_since_initialized(struct udev_device *udev_device); -const char *udev_device_get_sysattr_value(struct udev_device *udev_device, const char *sysattr); -int udev_device_has_tag(struct udev_device *udev_device, const char *tag); - -/* - * udev_monitor - * - * access to kernel uevents and udev events - */ -struct udev_monitor; -struct udev_monitor *udev_monitor_ref(struct udev_monitor *udev_monitor); -void udev_monitor_unref(struct udev_monitor *udev_monitor); -struct udev *udev_monitor_get_udev(struct udev_monitor *udev_monitor); -/* kernel and udev generated events over netlink */ -struct udev_monitor *udev_monitor_new_from_netlink(struct udev *udev, const char *name); -/* bind socket */ -int udev_monitor_enable_receiving(struct udev_monitor *udev_monitor); -int udev_monitor_set_receive_buffer_size(struct udev_monitor *udev_monitor, int size); -int udev_monitor_get_fd(struct udev_monitor *udev_monitor); -struct udev_device *udev_monitor_receive_device(struct udev_monitor *udev_monitor); -/* in-kernel socket filters to select messages that get delivered to a listener */ -int udev_monitor_filter_add_match_subsystem_devtype(struct udev_monitor *udev_monitor, - const char *subsystem, const char *devtype); -int udev_monitor_filter_add_match_tag(struct udev_monitor *udev_monitor, const char *tag); -int udev_monitor_filter_update(struct udev_monitor *udev_monitor); -int udev_monitor_filter_remove(struct udev_monitor *udev_monitor); -__attribute__((deprecated)) struct udev_monitor *udev_monitor_new_from_socket(struct udev *udev, const char *socket_path); - -/* - * udev_enumerate - * - * search sysfs for specific devices and provide a sorted list - */ -struct udev_enumerate; -struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate); -void udev_enumerate_unref(struct udev_enumerate *udev_enumerate); -struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate); -struct udev_enumerate *udev_enumerate_new(struct udev *udev); -/* device properties filter */ -int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); -int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem); -int udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); -int udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value); -int udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value); -int udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname); -int udev_enumerate_add_match_tag(struct udev_enumerate *udev_enumerate, const char *tag); -int udev_enumerate_add_match_parent(struct udev_enumerate *udev_enumerate, struct udev_device *parent); -int udev_enumerate_add_match_is_initialized(struct udev_enumerate *udev_enumerate); -int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath); -/* run enumeration with active filters */ -int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate); -int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate); -/* return device list */ -struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate); - -/* - * udev_queue - * - * access to the currently running udev events - */ -struct udev_queue; -struct udev_queue *udev_queue_ref(struct udev_queue *udev_queue); -void udev_queue_unref(struct udev_queue *udev_queue); -struct udev *udev_queue_get_udev(struct udev_queue *udev_queue); -struct udev_queue *udev_queue_new(struct udev *udev); -unsigned long long int udev_queue_get_kernel_seqnum(struct udev_queue *udev_queue); -unsigned long long int udev_queue_get_udev_seqnum(struct udev_queue *udev_queue); -int udev_queue_get_udev_is_active(struct udev_queue *udev_queue); -int udev_queue_get_queue_is_empty(struct udev_queue *udev_queue); -int udev_queue_get_seqnum_is_finished(struct udev_queue *udev_queue, unsigned long long int seqnum); -int udev_queue_get_seqnum_sequence_is_finished(struct udev_queue *udev_queue, - unsigned long long int start, unsigned long long int end); -struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_queue *udev_queue); - -/* - * udev_util - * - * udev specific utilities - */ -int udev_util_encode_string(const char *str, char *str_enc, size_t len); - - -#ifdef __cplusplus -} /* extern "C" */ -#endif - -#endif diff --git a/src/udev/libudev.pc.in b/src/udev/libudev.pc.in deleted file mode 100644 index c9a47fc9b8..0000000000 --- a/src/udev/libudev.pc.in +++ /dev/null @@ -1,11 +0,0 @@ -prefix=@prefix@ -exec_prefix=@exec_prefix@ -libdir=@libdir@ -includedir=@includedir@ - -Name: libudev -Description: Library to access udev device information -Version: @VERSION@ -Libs: -L${libdir} -ludev -lrt -Libs.private: -Cflags: -I${includedir} diff --git a/src/udev/scsi_id/scsi_serial.c b/src/udev/scsi_id/scsi_serial.c index 6bfb7f780c..8440b4cb4c 100644 --- a/src/udev/scsi_id/scsi_serial.c +++ b/src/udev/scsi_id/scsi_serial.c @@ -469,10 +469,10 @@ static int prepend_vendor_model(struct udev *udev, return ind; } -/** +/* * check_fill_0x83_id - check the page 0x83 id, if OK allocate and fill * serial number. - **/ + */ static int check_fill_0x83_id(struct udev *udev, struct scsi_id_device *dev_scsi, unsigned char *page_83, -- cgit v1.2.3-54-g00ecf