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-rw-r--r--udev/lib/libudev-enumerate.c479
1 files changed, 0 insertions, 479 deletions
diff --git a/udev/lib/libudev-enumerate.c b/udev/lib/libudev-enumerate.c
deleted file mode 100644
index 63f84062b2..0000000000
--- a/udev/lib/libudev-enumerate.c
+++ /dev/null
@@ -1,479 +0,0 @@
-/*
- * libudev - interface to udev device information
- *
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
- *
- * 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 <stdio.h>
-#include <stdlib.h>
-#include <stddef.h>
-#include <unistd.h>
-#include <errno.h>
-#include <string.h>
-#include <dirent.h>
-#include <fnmatch.h>
-#include <sys/stat.h>
-
-#include "libudev.h"
-#include "libudev-private.h"
-
-static int devices_sort(struct udev_enumerate *udev_enumerate);
-
-struct udev_enumerate {
- struct udev *udev;
- int refcount;
- struct udev_list_node sysattr_match_list;
- struct udev_list_node sysattr_nomatch_list;
- struct udev_list_node subsystem_match_list;
- struct udev_list_node subsystem_nomatch_list;
- struct udev_list_node properties_match_list;
- struct udev_list_node devices_list;
- int devices_sorted;
-};
-
-/**
- * udev_enumerate_new:
- * @udev: udev library context
- *
- * Returns: an enumeration context
- **/
-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_enumerate->devices_list);
- udev_list_init(&udev_enumerate->sysattr_match_list);
- udev_list_init(&udev_enumerate->sysattr_nomatch_list);
- udev_list_init(&udev_enumerate->subsystem_match_list);
- udev_list_init(&udev_enumerate->subsystem_nomatch_list);
- udev_list_init(&udev_enumerate->properties_match_list);
- return udev_enumerate;
-}
-
-struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate)
-{
- if (udev_enumerate == NULL)
- return NULL;
- udev_enumerate->refcount++;
- return udev_enumerate;
-}
-
-void udev_enumerate_unref(struct udev_enumerate *udev_enumerate)
-{
- if (udev_enumerate == NULL)
- return;
- udev_enumerate->refcount--;
- if (udev_enumerate->refcount > 0)
- return;
- udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->devices_list);
- udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->sysattr_match_list);
- udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->sysattr_nomatch_list);
- udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->subsystem_match_list);
- udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->subsystem_nomatch_list);
- udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->properties_match_list);
- free(udev_enumerate);
-}
-
-struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate)
-{
- if (udev_enumerate == NULL)
- return NULL;
- return udev_enumerate->udev;
-}
-
-struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate)
-{
- if (udev_enumerate == NULL)
- return NULL;
- if (!udev_enumerate->devices_sorted)
- devices_sort(udev_enumerate);
- return udev_list_get_entry(&udev_enumerate->devices_list);
-}
-
-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_get_udev(udev_enumerate),
- &udev_enumerate->subsystem_match_list, subsystem, NULL, 1, 0) == NULL)
- return -ENOMEM;
- return 0;
-}
-
-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_get_udev(udev_enumerate),
- &udev_enumerate->subsystem_nomatch_list, subsystem, NULL, 1, 0) == NULL)
- return -ENOMEM;
- return 0;
-}
-
-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_get_udev(udev_enumerate),
- &udev_enumerate->sysattr_match_list, sysattr, value, 0, 0) == NULL)
- return -ENOMEM;
- return 0;
-}
-
-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_get_udev(udev_enumerate),
- &udev_enumerate->sysattr_nomatch_list, sysattr, value, 0, 0) == NULL)
- return -ENOMEM;
- return 0;
-}
-
-static int match_sysattr_value(struct udev *udev, const char *syspath, const char *sysattr, const char *match_val)
-{
- struct udev_device *device;
- const char *val = NULL;
- int match = 0;
-
- device = udev_device_new_from_syspath(udev, syspath);
- if (device == NULL)
- return -EINVAL;
- val = udev_device_get_sysattr_value(device, sysattr);
- if (val == NULL)
- goto exit;
- if (match_val == NULL) {
- match = 1;
- goto exit;
- }
- if (fnmatch(match_val, val, 0) == 0) {
- match = 1;
- goto exit;
- }
-exit:
- udev_device_unref(device);
- return match;
-}
-
-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_get_udev(udev_enumerate),
- &udev_enumerate->properties_match_list, property, value, 0, 0) == NULL)
- return -ENOMEM;
- return 0;
-}
-
-static int match_sysattr(struct udev_enumerate *udev_enumerate, const char *syspath)
-{
- struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
- 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(udev, syspath,
- udev_list_entry_get_name(list_entry),
- udev_list_entry_get_value(list_entry)))
- return 0;
- }
- /* 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(udev, syspath,
- udev_list_entry_get_name(list_entry),
- udev_list_entry_get_value(list_entry)))
- return 0;
- }
- return 1;
- }
- return 1;
-}
-
-static int match_property(struct udev_enumerate *udev_enumerate, const char *syspath)
-{
- struct udev_device *dev;
- struct udev_list_entry *list_entry;
- int match = 0;
-
- /* no match always matches */
- if (udev_list_get_entry(&udev_enumerate->properties_match_list) == NULL)
- return 1;
-
- /* no device does not match */
- dev = udev_device_new_from_syspath(udev_enumerate->udev, syspath);
- if (dev == NULL)
- return 0;
-
- /* 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 = 1;
- goto out;
- }
- if (match_value == NULL || dev_value == NULL)
- continue;
- if (fnmatch(match_value, dev_value, 0) == 0) {
- match = 1;
- goto out;
- }
- }
- }
-out:
- udev_device_unref(dev);
- return match;
-}
-
-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)
- l = util_strpcpyl(&s, l, "/", subdir2, NULL);
- dir = opendir(path);
- if (dir == NULL)
- return -1;
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- char syspath[UTIL_PATH_SIZE];
- char filename[UTIL_PATH_SIZE];
- struct stat statbuf;
-
- if (dent->d_name[0] == '.')
- continue;
- util_strscpyl(syspath, sizeof(syspath), path, "/", dent->d_name, NULL);
- if (lstat(syspath, &statbuf) != 0)
- continue;
- if (S_ISREG(statbuf.st_mode))
- continue;
- if (S_ISLNK(statbuf.st_mode))
- util_resolve_sys_link(udev, syspath, sizeof(syspath));
-
- util_strscpyl(filename, sizeof(filename), syspath, "/uevent", NULL);
- if (stat(filename, &statbuf) != 0)
- continue;
- if (!match_sysattr(udev_enumerate, syspath))
- continue;
- if (!match_property(udev_enumerate, syspath))
- continue;
- udev_list_entry_add(udev, &udev_enumerate->devices_list, syspath, NULL, 1, 1);
- }
- closedir(dir);
- return 0;
-}
-
-static int 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 0;
- }
- 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 1;
- }
- return 0;
- }
- return 1;
-}
-
-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;
-}
-
-static int devices_delay(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) {
- dbg(udev, "delaying: %s\n", syspath);
- return 1;
- }
- }
- return 0;
-}
-
-/* sort delayed devices to the end of the list */
-static int devices_sort(struct udev_enumerate *udev_enumerate)
-{
- struct udev_list_entry *entry_loop;
- struct udev_list_entry *entry_tmp;
- struct udev_list_node devices_list;
-
- udev_list_init(&devices_list);
- /* move delayed to delay list */
- udev_list_entry_foreach_safe(entry_loop, entry_tmp, udev_list_get_entry(&udev_enumerate->devices_list)) {
- if (devices_delay(udev_enumerate->udev, udev_list_entry_get_name(entry_loop))) {
- udev_list_entry_remove(entry_loop);
- udev_list_entry_append(entry_loop, &devices_list);
- }
- }
- /* move delayed back to end of list */
- udev_list_entry_foreach_safe(entry_loop, entry_tmp, udev_list_get_entry(&devices_list)) {
- udev_list_entry_remove(entry_loop);
- udev_list_entry_append(entry_loop, &udev_enumerate->devices_list);
- }
- udev_enumerate->devices_sorted = 1;
- return 0;
-}
-
-int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath)
-{
- struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
- 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;
- udev_list_entry_add(udev, &udev_enumerate->devices_list,
- udev_device_get_syspath(udev_device), NULL, 1, 1);
- udev_device_unref(udev_device);
- return 0;
-}
-
-/**
- * udev_enumerate_scan_devices:
- * @udev_enumerate: udev enumeration context
- *
- * Returns: a negative value on error.
- **/
-int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate)
-{
- struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
- char base[UTIL_PATH_SIZE];
- struct stat statbuf;
-
- if (udev_enumerate == NULL)
- return -EINVAL;
- 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 */
- dbg(udev, "searching '/subsystem/*/devices/*' dir\n");
- scan_dir(udev_enumerate, "subsystem", "devices", NULL);
- } else {
- dbg(udev, "searching '/bus/*/devices/*' dir\n");
- scan_dir(udev_enumerate, "bus", "devices", NULL);
- dbg(udev, "searching '/class/*' dir\n");
- scan_dir(udev_enumerate, "class", NULL, NULL);
- /* if block isn't a class, scan /block/ */
- util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/class/block", NULL);
- if (stat(base, &statbuf) != 0) {
- if (match_subsystem(udev_enumerate, "block")) {
- dbg(udev, "searching '/block/*' dir\n");
- /* scan disks */
- scan_dir_and_add_devices(udev_enumerate, "block", NULL, NULL);
- /* scan partitions */
- dbg(udev, "searching '/block/*/*' dir\n");
- scan_dir(udev_enumerate, "block", NULL, "block");
- }
- }
- }
- return 0;
-}
-
-/**
- * udev_enumerate_scan_subsystems:
- * @udev_enumerate: udev enumeration context
- *
- * Returns: a negative value on error.
- **/
-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;
- util_strscpyl(base, sizeof(base), udev_get_sys_path(udev), "/subsystem", NULL);
- if (stat(base, &statbuf) == 0)
- subsysdir = "subsystem";
- else
- subsysdir = "bus";
- if (match_subsystem(udev_enumerate, "subsystem")) {
- dbg(udev, "searching '%s/*' dir\n", subsysdir);
- scan_dir_and_add_devices(udev_enumerate, subsysdir, NULL, NULL);
- }
- if (match_subsystem(udev_enumerate, "drivers")) {
- dbg(udev, "searching '%s/*/drivers/*' dir\n", subsysdir);
- scan_dir(udev_enumerate, subsysdir, "drivers", "drivers");
- }
- return 0;
-}