/*
* libudev - interface to udev device information
*
- * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ * Copyright (C) 2008-2010 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
struct udev_list_node subsystem_nomatch_list;
struct udev_list_node sysname_match_list;
struct udev_list_node properties_match_list;
+ struct udev_list_node tags_match_list;
+ struct udev_device *parent_match;
struct udev_list_node devices_list;
struct syspath *devices;
unsigned int devices_cur;
unsigned int devices_max;
bool devices_uptodate:1;
+ bool match_is_initialized;
};
/**
*
* Returns: an enumeration context
**/
-struct udev_enumerate *udev_enumerate_new(struct udev *udev)
+UDEV_EXPORT struct udev_enumerate *udev_enumerate_new(struct udev *udev)
{
struct udev_enumerate *udev_enumerate;
udev_list_init(&udev_enumerate->subsystem_nomatch_list);
udev_list_init(&udev_enumerate->sysname_match_list);
udev_list_init(&udev_enumerate->properties_match_list);
+ udev_list_init(&udev_enumerate->tags_match_list);
udev_list_init(&udev_enumerate->devices_list);
return udev_enumerate;
}
*
* Returns: the passed enumeration context
**/
-struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate)
+UDEV_EXPORT struct udev_enumerate *udev_enumerate_ref(struct udev_enumerate *udev_enumerate)
{
if (udev_enumerate == NULL)
return NULL;
* Drop a reference of an enumeration context. If the refcount reaches zero,
* all resources of the enumeration context will be released.
**/
-void udev_enumerate_unref(struct udev_enumerate *udev_enumerate)
+UDEV_EXPORT void udev_enumerate_unref(struct udev_enumerate *udev_enumerate)
{
unsigned int i;
udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->subsystem_nomatch_list);
udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->sysname_match_list);
udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->properties_match_list);
+ udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->tags_match_list);
+ udev_device_unref(udev_enumerate->parent_match);
udev_list_cleanup_entries(udev_enumerate->udev, &udev_enumerate->devices_list);
for (i = 0; i < udev_enumerate->devices_cur; i++)
free(udev_enumerate->devices[i].syspath);
*
* Returns: the udev library context.
*/
-struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate)
+UDEV_EXPORT struct udev *udev_enumerate_get_udev(struct udev_enumerate *udev_enumerate)
{
if (udev_enumerate == NULL)
return NULL;
}
/* For devices that should be moved to the absolute end of the list */
-static int devices_delay_end(struct udev *udev, const char *syspath)
+static bool devices_delay_end(struct udev *udev, const char *syspath)
{
static const char *delay_device_list[] = {
"/block/md",
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 true;
}
}
- return 0;
+ return false;
}
/* For devices that should just be moved a little bit later, just
*
* Returns: the first entry of the sorted list of device paths.
*/
-struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate)
+UDEV_EXPORT struct udev_list_entry *udev_enumerate_get_list_entry(struct udev_enumerate *udev_enumerate)
{
if (udev_enumerate == NULL)
return NULL;
unsigned int i;
unsigned int max;
struct syspath *prev = NULL, *move_later = NULL;
+ size_t move_later_prefix = 0;
udev_list_cleanup_entries(udev_enumerate->udev, &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];
- size_t move_later_prefix = 0;
/* skip duplicated entries */
if (prev != NULL &&
/* 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;
}
strncmp(entry->syspath, move_later->syspath, move_later_prefix) != 0) {
udev_list_entry_add(udev_enumerate->udev, &udev_enumerate->devices_list,
- move_later->syspath, NULL, 0, 0);
+ move_later->syspath, NULL, 0);
move_later = NULL;
}
udev_list_entry_add(udev_enumerate->udev, &udev_enumerate->devices_list,
- entry->syspath, NULL, 0, 0);
+ entry->syspath, NULL, 0);
}
if (move_later)
udev_list_entry_add(udev_enumerate->udev, &udev_enumerate->devices_list,
- move_later->syspath, NULL, 0, 0);
+ move_later->syspath, NULL, 0);
/* 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->udev, &udev_enumerate->devices_list,
- entry->syspath, NULL, 0, 0);
+ entry->syspath, NULL, 0);
free(entry->syspath);
}
udev_enumerate->devices_cur = max;
*
* Returns: 0 on success, otherwise a negative error value.
*/
-int udev_enumerate_add_match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem)
+UDEV_EXPORT 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)
+ &udev_enumerate->subsystem_match_list, subsystem, NULL, UDEV_LIST_UNIQUE) == NULL)
return -ENOMEM;
return 0;
}
*
* Returns: 0 on success, otherwise a negative error value.
*/
-int udev_enumerate_add_nomatch_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem)
+UDEV_EXPORT 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)
+ &udev_enumerate->subsystem_nomatch_list, subsystem, NULL, UDEV_LIST_UNIQUE) == NULL)
return -ENOMEM;
return 0;
}
*
* Returns: 0 on success, otherwise a negative error value.
*/
-int udev_enumerate_add_match_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value)
+UDEV_EXPORT 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)
+ &udev_enumerate->sysattr_match_list, sysattr, value, 0) == NULL)
return -ENOMEM;
return 0;
}
*
* Returns: 0 on success, otherwise a negative error value.
*/
-int udev_enumerate_add_nomatch_sysattr(struct udev_enumerate *udev_enumerate, const char *sysattr, const char *value)
+UDEV_EXPORT 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)
+ &udev_enumerate->sysattr_nomatch_list, sysattr, value, 0) == NULL)
return -ENOMEM;
return 0;
}
-static int match_sysattr_value(struct udev *udev, const char *syspath, const char *sysattr, const char *match_val)
+static int match_sysattr_value(struct udev_device *dev, const char *sysattr, const char *match_val)
{
- struct udev_device *device;
const char *val = NULL;
bool match = false;
- device = udev_device_new_from_syspath(udev, syspath);
- if (device == NULL)
- return -EINVAL;
- val = udev_device_get_sysattr_value(device, sysattr);
+ val = udev_device_get_sysattr_value(dev, sysattr);
if (val == NULL)
goto exit;
if (match_val == NULL) {
goto exit;
}
exit:
- udev_device_unref(device);
return match;
}
*
* Returns: 0 on success, otherwise a negative error value.
*/
-int udev_enumerate_add_match_property(struct udev_enumerate *udev_enumerate, const char *property, const char *value)
+UDEV_EXPORT 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)
+ &udev_enumerate->properties_match_list, property, value, 0) == 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.
+ */
+UDEV_EXPORT 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_get_udev(udev_enumerate),
+ &udev_enumerate->tags_match_list, tag, NULL, UDEV_LIST_UNIQUE) == NULL)
+ return -ENOMEM;
+ return 0;
+}
+
+/**
+ * udev_enumerate_add_match_parent:
+ * @udev_enumerate: context
+ * @parent: filter for the parent device
+ *
+ * Return only the children of a given device.
+ *
+ * A reference for the device is held until the udev_enumerate context
+ * is cleaned up.
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ */
+UDEV_EXPORT 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.
+ */
+UDEV_EXPORT 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
*
* Returns: 0 on success, otherwise a negative error value.
*/
-int udev_enumerate_add_match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname)
+UDEV_EXPORT 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_get_udev(udev_enumerate),
- &udev_enumerate->sysname_match_list, sysname, NULL, 1, 0) == NULL)
+ &udev_enumerate->sysname_match_list, sysname, NULL, UDEV_LIST_UNIQUE) == NULL)
return -ENOMEM;
return 0;
}
-static int match_sysattr(struct udev_enumerate *udev_enumerate, const char *syspath)
+static bool match_sysattr(struct udev_enumerate *udev_enumerate, struct udev_device *dev)
{
- 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;
+ 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(udev, syspath,
- udev_list_entry_get_name(list_entry),
- udev_list_entry_get_value(list_entry)))
- return 0;
+ if (!match_sysattr_value(dev, udev_list_entry_get_name(list_entry),
+ udev_list_entry_get_value(list_entry)))
+ return false;
}
- return 1;
+ return true;
}
- return 1;
+ return true;
}
-static int match_property(struct udev_enumerate *udev_enumerate, const char *syspath)
+static bool match_property(struct udev_enumerate *udev_enumerate, struct udev_device *dev)
{
- struct udev_device *dev;
struct udev_list_entry *list_entry;
- int match = false;
+ bool match = false;
/* 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;
+ return true;
/* loop over matches */
udev_list_entry_foreach(list_entry, udev_list_get_entry(&udev_enumerate->properties_match_list)) {
}
}
out:
- udev_device_unref(dev);
return match;
}
-static int match_sysname(struct udev_enumerate *udev_enumerate, const char *sysname)
+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 1;
+ 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 1;
+ return true;
}
- return 0;
+ return false;
}
static int scan_dir_and_add_devices(struct udev_enumerate *udev_enumerate,
if (subdir1 != NULL)
l = util_strpcpyl(&s, l, "/", subdir1, NULL);
if (subdir2 != NULL)
- l = util_strpcpyl(&s, l, "/", subdir2, NULL);
+ util_strpcpyl(&s, l, "/", subdir2, NULL);
dir = opendir(path);
if (dir == NULL)
- return -1;
+ return -ENOENT;
for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
char syspath[UTIL_PATH_SIZE];
- char filename[UTIL_PATH_SIZE];
- struct stat statbuf;
+ 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);
- if (lstat(syspath, &statbuf) != 0)
+ dev = udev_device_new_from_syspath(udev_enumerate->udev, syspath);
+ if (dev == NULL)
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;
- syspath_add(udev_enumerate, syspath);
+ 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 int match_subsystem(struct udev_enumerate *udev_enumerate, const char *subsystem)
+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 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 1;
+ return true;
}
- return 0;
+ return false;
}
- return 1;
+ return true;
}
static int scan_dir(struct udev_enumerate *udev_enumerate, const char *basedir, const char *subdir, const char *subsystem)
*
* Returns: 0 on success, otherwise a negative error value.
*/
-int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath)
+UDEV_EXPORT int udev_enumerate_add_syspath(struct udev_enumerate *udev_enumerate, const char *syspath)
{
struct udev_device *udev_device;
return 0;
}
-/**
- * udev_enumerate_scan_devices:
- * @udev_enumerate: udev enumeration context
- *
- * Returns: 0 on success, otherwise a negative error value.
- **/
-int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate)
+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_all(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 */
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_devices:
+ * @udev_enumerate: udev enumeration context
+ *
+ * Returns: 0 on success, otherwise a negative error value.
+ **/
+UDEV_EXPORT int udev_enumerate_scan_devices(struct udev_enumerate *udev_enumerate)
+{
+ if (udev_enumerate == NULL)
+ return -EINVAL;
+
+ if (udev_list_get_entry(&udev_enumerate->tags_match_list) != NULL)
+ return scan_devices_tags(udev_enumerate);
+
+ if (udev_enumerate->parent_match != NULL)
+ return parent_crawl_children(udev_enumerate, udev_device_get_syspath(udev_enumerate->parent_match), 256);
+
+ return scan_devices_all(udev_enumerate);
+}
+
/**
* udev_enumerate_scan_subsystems:
* @udev_enumerate: udev enumeration context
*
* Returns: 0 on success, otherwise a negative error value.
**/
-int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate)
+UDEV_EXPORT int udev_enumerate_scan_subsystems(struct udev_enumerate *udev_enumerate)
{
struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
char base[UTIL_PATH_SIZE];
if (udev_enumerate == NULL)
return -EINVAL;
+
+ /* all kernel modules */
+ if (match_subsystem(udev_enumerate, "module")) {
+ dbg(udev, "searching '%s/modules/*' dir\n", subsysdir);
+ 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")) {
dbg(udev, "searching '%s/*' dir\n", subsysdir);
scan_dir_and_add_devices(udev_enumerate, subsysdir, NULL, NULL);
}
+
+ /* all subsystem drivers */
if (match_subsystem(udev_enumerate, "drivers")) {
dbg(udev, "searching '%s/*/drivers/*' dir\n", subsysdir);
scan_dir(udev_enumerate, subsysdir, "drivers", "drivers");
~ianmdlvl / elogind.git / blobdiff