/* -*- Mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- * * Copyright (C) 2008-2010 David Zeuthen <davidz@redhat.com> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include <stdlib.h> #include <string.h> #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; }