libudev_la_SOURCES =\
libudev-private.h \
libudev.c \
+ libudev-utils.c \
+ libudev-device.c \
+ libudev-enumerate.c \
../list.h \
../udev.h \
../udev_utils.c \
--- /dev/null
+/*
+ * libudev - interface to udev device information
+ *
+ * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <dirent.h>
+#include <sys/stat.h>
+
+#include "libudev.h"
+#include "libudev-private.h"
+#include "../udev.h"
+
+static struct udev_device *device_init(struct udev *udev)
+{
+ struct udev_device *udev_device;
+
+ udev_device = malloc(sizeof(struct udev_device));
+ if (udev_device == NULL)
+ return NULL;
+ memset(udev_device, 0x00, sizeof(struct udev_device));
+ udev_device->refcount = 1;
+ udev_device->udev = udev;
+ return udev_device;
+}
+
+/**
+ * udev_device_new_from_devpath:
+ * @udev: udev library context
+ * @devpath: sys device path
+ *
+ * Create new udev device, and fill in information from the sysfs
+ * device and the udev database entry. The devpath must not contain
+ * the sysfs mount path, and must contain a leading '/'.
+ *
+ * The initial refcount is 1, and needs to be decremented to
+ * release the ressources of the udev device.
+ *
+ * Returns: a new udev device, or #NULL, if it does not exist
+ **/
+struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char *devpath)
+{
+ char path[PATH_SIZE];
+ struct stat statbuf;
+ struct udev_device *udev_device;
+ int err;
+
+ strlcpy(path, udev_get_sys_path(udev), sizeof(path));
+ strlcat(path, devpath, sizeof(path));
+ if (stat(path, &statbuf) != 0)
+ return NULL;
+ if (!S_ISDIR(statbuf.st_mode))
+ return NULL;
+
+ udev_device = device_init(udev);
+ if (udev_device == NULL)
+ return NULL;
+
+ udev_device->udevice = udev_device_init(NULL);
+ if (udev_device->udevice == NULL) {
+ free(udev_device);
+ return NULL;
+ }
+ log_info(udev, "device %p created\n", udev_device);
+
+ strlcpy(path, devpath, sizeof(path));
+ sysfs_resolve_link(path, sizeof(path));
+
+ err = udev_db_get_device(udev_device->udevice, path);
+ if (err >= 0)
+ log_info(udev, "device %p filled with udev database data\n", udev_device);
+ log_info(udev, "device %p filled with %s data\n", udev_device, udev_device_get_devpath(udev_device));
+ return udev_device;
+}
+
+/**
+ * udev_device_get_udev:
+ *
+ * Retrieve the udev library context the device was created with.
+ *
+ * Returns: the udev library context
+ **/
+struct udev *udev_device_get_udev(struct udev_device *udev_device)
+{
+ return udev_device->udev;
+}
+
+/**
+ * udev_device_ref:
+ * @udev_device: udev device
+ *
+ * Take a reference of a udev device.
+ *
+ * Returns: the passed udev device
+ **/
+struct udev_device *udev_device_ref(struct udev_device *udev_device)
+{
+ 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 ressources of the device will be released.
+ *
+ **/
+void udev_device_unref(struct udev_device *udev_device)
+{
+ udev_device->refcount--;
+ if (udev_device->refcount > 0)
+ return;
+ udev_device_cleanup(udev_device->udevice);
+ free(udev_device);
+}
+
+/**
+ * udev_device_get_devpath:
+ * @udev_device: udev device
+ *
+ * Retrieve the sys path of the udev device. The path does not contain
+ * the sys mount point.
+ *
+ * Returns: the sys path of the udev device
+ **/
+const char *udev_device_get_devpath(struct udev_device *udev_device)
+{
+ return udev_device->udevice->dev->devpath;
+}
+
+/**
+ * udev_device_get_devname:
+ * @udev_device: udev device
+ *
+ * Retrieve the device node file name belonging to the udev device.
+ * The path does not contain the device directory, and does not contain
+ * a leading '/'.
+ *
+ * Returns: the device node file name of the udev device, or #NULL if no device node exists
+ **/
+const char *udev_device_get_devname(struct udev_device *udev_device)
+{
+ if (udev_device->udevice->name[0] == '\0')
+ return NULL;
+ return udev_device->udevice->name;
+}
+
+/**
+ * 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
+ **/
+const char *udev_device_get_subsystem(struct udev_device *udev_device)
+{
+ struct sysfs_device *dev = udev_device->udevice->dev;
+ if (dev->subsystem[0] != '\0')
+ return dev->subsystem;
+ if (util_get_sys_subsystem(udev_device->udev, dev->devpath,
+ dev->subsystem, sizeof(dev->subsystem)) < 2)
+ return NULL;
+ return dev->subsystem;
+}
+
+/**
+ * udev_device_get_devlinks:
+ * @udev_device: udev device
+ * @cb: function to be called for every device link found
+ * @data: data to be passed to the function
+ *
+ * Retrieve the device links pointing to the device file of the
+ * udev device. For every device link, the passed function will be
+ * called with the device link string. If the function returns 1,
+ * remaning device links will be ignored. The device link path
+ * does not contain the device directory, and does not contain
+ * a leading '/'.
+ *
+ * Returns: the number of device links passed to the caller, or a negative value on error
+ **/
+int udev_device_get_devlinks(struct udev_device *udev_device,
+ int (*cb)(struct udev_device *udev_device, const char *value, void *data),
+ void *data)
+{
+ struct name_entry *name_loop;
+ int count = 0;
+
+ list_for_each_entry(name_loop, &udev_device->udevice->symlink_list, node) {
+ count++;
+ if (cb(udev_device, name_loop->name, data) != 0)
+ break;
+ }
+ return count;
+}
+
+/**
+ * udev_device_get_properties:
+ * @udev_device: udev device
+ * @cb: function to be called for every property found
+ * @data: data to be passed to the function
+ *
+ * Retrieve the property key/value pairs belonging to the
+ * udev device. For every key/value pair, the passed function will be
+ * called. If the function returns 1, remaning properties will be
+ * ignored.
+ *
+ * Returns: the number of properties passed to the caller, or a negative value on error
+ **/
+int udev_device_get_properties(struct udev_device *udev_device,
+ int (*cb)(struct udev_device *udev_device, const char *key, const char *value, void *data),
+ void *data)
+{
+ struct name_entry *name_loop;
+ int count = 0;
+
+ list_for_each_entry(name_loop, &udev_device->udevice->env_list, node) {
+ char name[PATH_SIZE];
+ char *val;
+
+ strncpy(name, name_loop->name, PATH_SIZE);
+ name[PATH_SIZE-1] = '\0';
+ val = strchr(name, '=');
+ if (val == NULL)
+ continue;
+ val[0] = '\0';
+ val = &val[1];
+ if (cb(udev_device, name, val, data) != 0)
+ break;
+ }
+ return count;
+}
--- /dev/null
+/*
+ * libudev - interface to udev device information
+ *
+ * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <dirent.h>
+#include <sys/stat.h>
+
+#include "libudev.h"
+#include "libudev-private.h"
+#include "../udev.h"
+
+static int devices_scan_subsystem(struct udev *udev,
+ const char *basedir, const char *subsystem, const char *subdir,
+ struct list_head *device_list)
+{
+ char path[PATH_SIZE];
+ DIR *dir;
+ struct dirent *dent;
+ size_t len;
+
+ len = strlcpy(path, udev_get_sys_path(udev), sizeof(path));
+ strlcat(path, basedir, sizeof(path));
+ strlcat(path, "/", sizeof(path));
+ strlcat(path, subsystem, sizeof(path));
+ if (subdir != NULL)
+ strlcat(path, subdir, sizeof(path));
+ dir = opendir(path);
+ if (dir == NULL)
+ return -1;
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ char devpath[PATH_SIZE];
+
+ if (dent->d_name[0] == '.')
+ continue;
+ strlcpy(devpath, &path[len], sizeof(devpath));
+ strlcat(devpath, "/", sizeof(devpath));
+ strlcat(devpath, dent->d_name, sizeof(devpath));
+ sysfs_resolve_link(devpath, sizeof(devpath));
+ name_list_add(device_list, devpath, 1);
+ }
+ closedir(dir);
+ return 0;
+}
+
+static int devices_scan_subsystems(struct udev *udev,
+ const char *basedir, const char *subsystem, const char *subdir,
+ struct list_head *device_list)
+{
+ char path[PATH_SIZE];
+ DIR *dir;
+ struct dirent *dent;
+
+ if (subsystem != NULL)
+ return devices_scan_subsystem(udev, basedir, subsystem, subdir, device_list);
+
+ strlcpy(path, udev_get_sys_path(udev), sizeof(path));
+ strlcat(path, basedir, sizeof(path));
+ dir = opendir(path);
+ if (dir == NULL)
+ return -1;
+ for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
+ if (dent->d_name[0] == '.')
+ continue;
+ devices_scan_subsystem(udev, basedir, dent->d_name, subdir, device_list);
+ }
+ closedir(dir);
+ return 0;
+}
+
+static int devices_delay(struct udev *udev, const char *devpath)
+{
+ static const char *delay_device_list[] = {
+ "/block/md",
+ "/block/dm-",
+ NULL
+ };
+ int i;
+
+ for (i = 0; delay_device_list[i] != NULL; i++) {
+ if (strstr(devpath, delay_device_list[i]) != NULL) {
+ log_info(udev, "delaying: %s\n", devpath);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int devices_call(struct udev *udev, const char *devpath,
+ int (*cb)(struct udev *udev,
+ const char *devpath, const char *subsystem, const char *name,
+ void *data),
+ void *data,
+ int *cb_rc)
+{
+ char subsystem[NAME_SIZE];
+ const char *name;
+
+ name = strrchr(devpath, '/');
+ if (name == NULL)
+ return -1;
+ name++;
+
+ if (util_get_sys_subsystem(udev, devpath, subsystem, sizeof(subsystem)) < 2)
+ return -1;
+ *cb_rc = cb(udev, devpath, subsystem, name, data);
+ return 0;
+}
+
+/**
+ * udev_devices_enumerate:
+ * @udev_device: udev device
+ * @cb: function to be called for every property found
+ * @data: data to be passed to the function
+ *
+ * Retrieve the property key/value pairs belonging to the
+ * udev device. For every key/value pair, the passed function will be
+ * called. If the function returns 1, remaning properties will be
+ * ignored.
+ *
+ * Returns: the number of properties passed to the caller, or a negative value on error
+ **/
+int udev_devices_enumerate(struct udev *udev, const char *subsystem,
+ int (*cb)(struct udev *udev,
+ const char *devpath, const char *subsystem, const char *name, void *data),
+ void *data)
+{
+ char base[PATH_SIZE];
+ struct stat statbuf;
+ struct list_head device_list;
+ struct name_entry *loop_device;
+ struct name_entry *tmp_device;
+ int cb_rc = 0;
+ int count = 0;
+
+ INIT_LIST_HEAD(&device_list);
+
+ /* if we have /sys/subsystem/, forget all the old stuff */
+ strlcpy(base, sysfs_path, sizeof(base));
+ strlcat(base, "/subsystem", sizeof(base));
+ if (stat(base, &statbuf) == 0) {
+ devices_scan_subsystems(udev, "/subsystem", subsystem, "/devices", &device_list);
+ } else {
+ devices_scan_subsystems(udev, "/bus", subsystem, "/devices", &device_list);
+ devices_scan_subsystems(udev, "/class", subsystem, NULL, &device_list);
+ }
+
+ list_for_each_entry_safe(loop_device, tmp_device, &device_list, node) {
+ if (devices_delay(udev, loop_device->name))
+ continue;
+ if (cb_rc == 0)
+ if (devices_call(udev, loop_device->name, cb, data, &cb_rc) == 0)
+ count++;
+ list_del(&loop_device->node);
+ free(loop_device);
+ }
+
+ /* handle remaining delayed devices */
+ list_for_each_entry_safe(loop_device, tmp_device, &device_list, node) {
+ if (cb_rc == 0)
+ if (devices_call(udev, loop_device->name, cb, data, &cb_rc) == 0)
+ count++;
+ list_del(&loop_device->node);
+ free(loop_device);
+ }
+
+ return count;
+}
__attribute__ ((format(printf, 6, 7))) {}
#endif
+extern ssize_t util_get_sys_subsystem(struct udev *udev, const char *devpath, char *subsystem, size_t size);
+
#endif
--- /dev/null
+/*
+ * libudev - interface to udev device information
+ *
+ * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <dirent.h>
+#include <sys/stat.h>
+
+#include "libudev.h"
+#include "libudev-private.h"
+#include "../udev.h"
+
+ssize_t util_get_sys_subsystem(struct udev *udev, const char *devpath, char *subsystem, size_t size)
+{
+ char path[PATH_SIZE];
+ ssize_t len;
+ const char *pos;
+
+ strlcpy(path, udev_get_sys_path(udev), sizeof(path));
+ strlcat(path, devpath, sizeof(path));
+ strlcat(path, "/subsystem", sizeof(path));
+ len = readlink(path, path, sizeof(path));
+ if (len < 0 || len >= (ssize_t) sizeof(path))
+ return -1;
+ path[len] = '\0';
+ pos = strrchr(path, '/');
+ if (pos == NULL)
+ return -1;
+ pos = &pos[1];
+ return strlcpy(subsystem, pos, size);
+}
}
#endif
-static ssize_t get_subsystem(struct udev *udev, const char *devpath, char *subsystem, size_t size)
-{
- char path[PATH_SIZE];
- ssize_t len;
- const char *pos;
-
- strlcpy(path, udev_get_sys_path(udev), sizeof(path));
- strlcat(path, devpath, sizeof(path));
- strlcat(path, "/subsystem", sizeof(path));
- len = readlink(path, path, sizeof(path));
- if (len < 0 || len >= (ssize_t) sizeof(path))
- return -1;
- path[len] = '\0';
- pos = strrchr(path, '/');
- if (pos == NULL)
- return -1;
- pos = &pos[1];
- return strlcpy(subsystem, pos, size);
-}
-
/**
* udev_new:
*
{
return udev_root;
}
-
-static struct udev_device *device_init(struct udev *udev)
-{
- struct udev_device *udev_device;
-
- udev_device = malloc(sizeof(struct udev_device));
- if (udev_device == NULL)
- return NULL;
- memset(udev_device, 0x00, sizeof(struct udev_device));
- udev_device->refcount = 1;
- udev_device->udev = udev;
- return udev_device;
-}
-
-/**
- * udev_device_new_from_devpath:
- * @udev: udev library context
- * @devpath: sys device path
- *
- * Create new udev device, and fill in information from the sysfs
- * device and the udev database entry. The devpath must not contain
- * the sysfs mount path, and must contain a leading '/'.
- *
- * The initial refcount is 1, and needs to be decremented to
- * release the ressources of the udev device.
- *
- * Returns: a new udev device, or #NULL, if it does not exist
- **/
-struct udev_device *udev_device_new_from_devpath(struct udev *udev, const char *devpath)
-{
- char path[PATH_SIZE];
- struct stat statbuf;
- struct udev_device *udev_device;
- int err;
-
- strlcpy(path, udev_get_sys_path(udev), sizeof(path));
- strlcat(path, devpath, sizeof(path));
- if (stat(path, &statbuf) != 0)
- return NULL;
- if (!S_ISDIR(statbuf.st_mode))
- return NULL;
-
- udev_device = device_init(udev);
- if (udev_device == NULL)
- return NULL;
-
- udev_device->udevice = udev_device_init(NULL);
- if (udev_device->udevice == NULL) {
- free(udev_device);
- return NULL;
- }
- log_info(udev, "device %p created\n", udev_device);
-
- strlcpy(path, devpath, sizeof(path));
- sysfs_resolve_link(path, sizeof(path));
-
- err = udev_db_get_device(udev_device->udevice, path);
- if (err >= 0)
- log_info(udev, "device %p filled with udev database data\n", udev_device);
- log_info(udev, "device %p filled with %s data\n", udev_device, udev_device_get_devpath(udev_device));
- return udev_device;
-}
-
-/**
- * udev_device_get_udev:
- *
- * Retrieve the udev library context the device was created with.
- *
- * Returns: the udev library context
- **/
-struct udev *udev_device_get_udev(struct udev_device *udev_device)
-{
- return udev_device->udev;
-}
-
-/**
- * udev_device_ref:
- * @udev_device: udev device
- *
- * Take a reference of a udev device.
- *
- * Returns: the passed udev device
- **/
-struct udev_device *udev_device_ref(struct udev_device *udev_device)
-{
- 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 ressources of the device will be released.
- *
- **/
-void udev_device_unref(struct udev_device *udev_device)
-{
- udev_device->refcount--;
- if (udev_device->refcount > 0)
- return;
- udev_device_cleanup(udev_device->udevice);
- free(udev_device);
-}
-
-/**
- * udev_device_get_devpath:
- * @udev_device: udev device
- *
- * Retrieve the sys path of the udev device. The path does not contain
- * the sys mount point.
- *
- * Returns: the sys path of the udev device
- **/
-const char *udev_device_get_devpath(struct udev_device *udev_device)
-{
- return udev_device->udevice->dev->devpath;
-}
-
-/**
- * udev_device_get_devname:
- * @udev_device: udev device
- *
- * Retrieve the device node file name belonging to the udev device.
- * The path does not contain the device directory, and does not contain
- * a leading '/'.
- *
- * Returns: the device node file name of the udev device, or #NULL if no device node exists
- **/
-const char *udev_device_get_devname(struct udev_device *udev_device)
-{
- if (udev_device->udevice->name[0] == '\0')
- return NULL;
- return udev_device->udevice->name;
-}
-
-/**
- * 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
- **/
-const char *udev_device_get_subsystem(struct udev_device *udev_device)
-{
- struct sysfs_device *dev = udev_device->udevice->dev;
- if (dev->subsystem[0] != '\0')
- return dev->subsystem;
- if (get_subsystem(udev_device->udev, dev->devpath,
- dev->subsystem, sizeof(dev->subsystem)) < 2)
- return NULL;
- return dev->subsystem;
-}
-
-/**
- * udev_device_get_devlinks:
- * @udev_device: udev device
- * @cb: function to be called for every device link found
- * @data: data to be passed to the function
- *
- * Retrieve the device links pointing to the device file of the
- * udev device. For every device link, the passed function will be
- * called with the device link string. If the function returns 1,
- * remaning device links will be ignored. The device link path
- * does not contain the device directory, and does not contain
- * a leading '/'.
- *
- * Returns: the number of device links passed to the caller, or a negative value on error
- **/
-int udev_device_get_devlinks(struct udev_device *udev_device,
- int (*cb)(struct udev_device *udev_device, const char *value, void *data),
- void *data)
-{
- struct name_entry *name_loop;
- int count = 0;
-
- list_for_each_entry(name_loop, &udev_device->udevice->symlink_list, node) {
- count++;
- if (cb(udev_device, name_loop->name, data) != 0)
- break;
- }
- return count;
-}
-
-/**
- * udev_device_get_properties:
- * @udev_device: udev device
- * @cb: function to be called for every property found
- * @data: data to be passed to the function
- *
- * Retrieve the property key/value pairs belonging to the
- * udev device. For every key/value pair, the passed function will be
- * called. If the function returns 1, remaning properties will be
- * ignored.
- *
- * Returns: the number of properties passed to the caller, or a negative value on error
- **/
-int udev_device_get_properties(struct udev_device *udev_device,
- int (*cb)(struct udev_device *udev_device, const char *key, const char *value, void *data),
- void *data)
-{
- struct name_entry *name_loop;
- int count = 0;
-
- list_for_each_entry(name_loop, &udev_device->udevice->env_list, node) {
- char name[PATH_SIZE];
- char *val;
-
- strncpy(name, name_loop->name, PATH_SIZE);
- name[PATH_SIZE-1] = '\0';
- val = strchr(name, '=');
- if (val == NULL)
- continue;
- val[0] = '\0';
- val = &val[1];
- if (cb(udev_device, name, val, data) != 0)
- break;
- }
- return count;
-}
-
-static int devices_scan_subsystem(struct udev *udev,
- const char *basedir, const char *subsystem, const char *subdir,
- struct list_head *device_list)
-{
- char path[PATH_SIZE];
- DIR *dir;
- struct dirent *dent;
- size_t len;
-
- len = strlcpy(path, udev_get_sys_path(udev), sizeof(path));
- strlcat(path, basedir, sizeof(path));
- strlcat(path, "/", sizeof(path));
- strlcat(path, subsystem, sizeof(path));
- if (subdir != NULL)
- strlcat(path, subdir, sizeof(path));
- dir = opendir(path);
- if (dir == NULL)
- return -1;
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- char devpath[PATH_SIZE];
-
- if (dent->d_name[0] == '.')
- continue;
- strlcpy(devpath, &path[len], sizeof(devpath));
- strlcat(devpath, "/", sizeof(devpath));
- strlcat(devpath, dent->d_name, sizeof(devpath));
- sysfs_resolve_link(devpath, sizeof(devpath));
- name_list_add(device_list, devpath, 1);
- }
- closedir(dir);
- return 0;
-}
-
-static int devices_scan_subsystems(struct udev *udev,
- const char *basedir, const char *subsystem, const char *subdir,
- struct list_head *device_list)
-{
- char path[PATH_SIZE];
- DIR *dir;
- struct dirent *dent;
-
- if (subsystem != NULL)
- return devices_scan_subsystem(udev, basedir, subsystem, subdir, device_list);
-
- strlcpy(path, udev_get_sys_path(udev), sizeof(path));
- strlcat(path, basedir, sizeof(path));
- dir = opendir(path);
- if (dir == NULL)
- return -1;
- for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {
- if (dent->d_name[0] == '.')
- continue;
- devices_scan_subsystem(udev, basedir, dent->d_name, subdir, device_list);
- }
- closedir(dir);
- return 0;
-}
-
-static int devices_delay(struct udev *udev, const char *devpath)
-{
- static const char *delay_device_list[] = {
- "/block/md",
- "/block/dm-",
- NULL
- };
- int i;
-
- for (i = 0; delay_device_list[i] != NULL; i++) {
- if (strstr(devpath, delay_device_list[i]) != NULL) {
- log_info(udev, "delaying: %s\n", devpath);
- return 1;
- }
- }
- return 0;
-}
-
-static int devices_call(struct udev *udev, const char *devpath,
- int (*cb)(struct udev *udev,
- const char *devpath, const char *subsystem, const char *name,
- void *data),
- void *data,
- int *cb_rc)
-{
- char subsystem[NAME_SIZE];
- const char *name;
-
- name = strrchr(devpath, '/');
- if (name == NULL)
- return -1;
- name++;
-
- if (get_subsystem(udev, devpath, subsystem, sizeof(subsystem)) < 2)
- return -1;
- *cb_rc = cb(udev, devpath, subsystem, name, data);
- return 0;
-}
-
-/**
- * udev_devices_enumerate:
- * @udev_device: udev device
- * @cb: function to be called for every property found
- * @data: data to be passed to the function
- *
- * Retrieve the property key/value pairs belonging to the
- * udev device. For every key/value pair, the passed function will be
- * called. If the function returns 1, remaning properties will be
- * ignored.
- *
- * Returns: the number of properties passed to the caller, or a negative value on error
- **/
-int udev_devices_enumerate(struct udev *udev, const char *subsystem,
- int (*cb)(struct udev *udev,
- const char *devpath, const char *subsystem, const char *name, void *data),
- void *data)
-{
- char base[PATH_SIZE];
- struct stat statbuf;
- struct list_head device_list;
- struct name_entry *loop_device;
- struct name_entry *tmp_device;
- int cb_rc = 0;
- int count = 0;
-
- INIT_LIST_HEAD(&device_list);
-
- /* if we have /sys/subsystem/, forget all the old stuff */
- strlcpy(base, sysfs_path, sizeof(base));
- strlcat(base, "/subsystem", sizeof(base));
- if (stat(base, &statbuf) == 0) {
- devices_scan_subsystems(udev, "/subsystem", subsystem, "/devices", &device_list);
- } else {
- devices_scan_subsystems(udev, "/bus", subsystem, "/devices", &device_list);
- devices_scan_subsystems(udev, "/class", subsystem, NULL, &device_list);
- }
-
- list_for_each_entry_safe(loop_device, tmp_device, &device_list, node) {
- if (devices_delay(udev, loop_device->name))
- continue;
- if (cb_rc == 0)
- if (devices_call(udev, loop_device->name, cb, data, &cb_rc) == 0)
- count++;
- list_del(&loop_device->node);
- free(loop_device);
- }
-
- /* handle remaining delayed devices */
- list_for_each_entry_safe(loop_device, tmp_device, &device_list, node) {
- if (cb_rc == 0)
- if (devices_call(udev, loop_device->name, cb, data, &cb_rc) == 0)
- count++;
- list_del(&loop_device->node);
- free(loop_device);
- }
-
- return count;
-}
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