* udev_device_get_devnum:
* @udev_device: udev device
*
- * Returns: the device major/minor number.
+ * Get the device major/minor number.
+ *
+ * Returns: the dev_t number.
**/
_public_ dev_t udev_device_get_devnum(struct udev_device *udev_device)
{
* udev_device_get_driver:
* @udev_device: udev device
*
- * Returns: the driver string, or #NULL if there is no driver attached.
+ * Get the kernel driver name.
+ *
+ * Returns: the driver name string, or #NULL if there is no driver attached.
**/
_public_ const char *udev_device_get_driver(struct udev_device *udev_device)
{
if (startswith(property, "DEVPATH=")) {
char path[UTIL_PATH_SIZE];
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys", &property[8], NULL);
+ util_strscpyl(path, sizeof(path), "/sys", &property[8], NULL);
udev_device_set_syspath(udev_device, path);
} else if (startswith(property, "SUBSYSTEM=")) {
udev_device_set_subsystem(udev_device, &property[10]);
* @udev_device: udev device
* @key: property name
*
- * Returns: the value of a device property, or #NULL if there is no such property.
+ * Get the value of a given property.
+ *
+ * Returns: the property string, or #NULL if there is no such property.
**/
_public_ const char *udev_device_get_property_value(struct udev_device *udev_device, const char *key)
{
id = udev_device_get_id_filename(udev_device);
if (id == NULL)
return -1;
- util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/run/udev/data/", id, NULL);
+ util_strscpyl(filename, sizeof(filename), "/run/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);
+ udev_dbg(udev_device->udev, "no db file to read %s: %m\n", dbfile);
return -1;
}
udev_device->is_initialized = true;
val = &line[2];
switch(line[0]) {
case 'S':
- util_strscpyl(filename, sizeof(filename), TEST_PREFIX "/dev/", val, NULL);
+ util_strscpyl(filename, sizeof(filename), "/dev/", val, NULL);
udev_device_add_devlink(udev_device, filename, 0);
break;
case 'L':
}
fclose(f);
- dbg(udev_device->udev, "device %p filled with db file data\n", udev_device);
+ udev_dbg(udev_device->udev, "device %p filled with db file data\n", udev_device);
return 0;
}
return NULL;
/* path starts in sys */
- if (!startswith(syspath, TEST_PREFIX "/sys")) {
- dbg(udev, "not in sys :%s\n", syspath);
+ if (!startswith(syspath, "/sys")) {
+ udev_dbg(udev, "not in sys :%s\n", syspath);
return NULL;
}
/* path is not a root directory */
- subdir = syspath + strlen(TEST_PREFIX "/sys");
+ subdir = syspath + strlen("/sys");
pos = strrchr(subdir, '/');
if (pos == NULL || pos[1] == '\0' || pos < &subdir[2])
return NULL;
util_strscpy(path, sizeof(path), syspath);
util_resolve_sys_link(udev, path, sizeof(path));
- if (startswith(path + strlen(TEST_PREFIX "/sys"), "/devices/")) {
+ if (startswith(path + strlen("/sys"), "/devices/")) {
char file[UTIL_PATH_SIZE];
/* all "devices" require a "uevent" file */
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));
+ udev_dbg(udev, "device %p has devpath '%s'\n", udev_device, udev_device_get_devpath(udev_device));
return udev_device;
}
return NULL;
/* use /sys/dev/{block,char}/<maj>:<min> link */
- snprintf(path, sizeof(path), TEST_PREFIX "/sys/dev/%s/%u:%u",
+ snprintf(path, sizeof(path), "/sys/dev/%s/%u:%u",
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)
+/**
+ * udev_device_new_from_device_id:
+ * @udev: udev library context
+ * @id: text string identifying a kernel device
+ *
+ * Create new udev device, and fill in information from the sys
+ * device and the udev database entry. The device is looked-up
+ * by a special string:
+ * b8:2 - block device major:minor
+ * c128:1 - char device major:minor
+ * n3 - network device ifindex
+ * +sound:card29 - kernel driver core subsystem:device name
+ *
+ * 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_device_id(struct udev *udev, char *id)
{
char type;
int maj, min;
struct stat statbuf;
if (streq(subsystem, "subsystem")) {
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/subsystem/", sysname, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/subsystem/", sysname, NULL);
if (stat(path, &statbuf) == 0)
goto found;
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/bus/", sysname, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/bus/", sysname, NULL);
if (stat(path, &statbuf) == 0)
goto found;
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/class/", sysname, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/class/", sysname, NULL);
if (stat(path, &statbuf) == 0)
goto found;
goto out;
}
if (streq(subsystem, "module")) {
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/module/", sysname, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/module/", sysname, NULL);
if (stat(path, &statbuf) == 0)
goto found;
goto out;
driver[0] = '\0';
driver = &driver[1];
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/subsystem/", subsys, "/drivers/", driver, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/subsystem/", subsys, "/drivers/", driver, NULL);
if (stat(path, &statbuf) == 0)
goto found;
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/bus/", subsys, "/drivers/", driver, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/bus/", subsys, "/drivers/", driver, NULL);
if (stat(path, &statbuf) == 0)
goto found;
}
goto out;
}
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/subsystem/", subsystem, "/devices/", sysname, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/subsystem/", subsystem, "/devices/", sysname, NULL);
if (stat(path, &statbuf) == 0)
goto found;
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/bus/", subsystem, "/devices/", sysname, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/bus/", subsystem, "/devices/", sysname, NULL);
if (stat(path, &statbuf) == 0)
goto found;
- util_strscpyl(path, sizeof(path), TEST_PREFIX "/sys/class/", subsystem, "/", sysname, NULL);
+ util_strscpyl(path, sizeof(path), "/sys/class/", subsystem, "/", sysname, NULL);
if (stat(path, &statbuf) == 0)
goto found;
out:
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_dbg(udev, "missing values, invalid device\n");
udev_device_unref(udev_device);
udev_device = NULL;
}
const char *subdir;
util_strscpy(path, sizeof(path), udev_device->syspath);
- subdir = path + strlen(TEST_PREFIX "/sys/");
+ subdir = path + strlen("/sys/");
for (;;) {
char *pos;
* Drop a reference of a udev device. If the refcount reaches zero,
* the resources of the device will be released.
*
+ * Returns: the passed udev device if it has still an active reference, or #NULL otherwise.
**/
-_public_ void udev_device_unref(struct udev_device *udev_device)
+_public_ struct udev_device *udev_device_unref(struct udev_device *udev_device)
{
if (udev_device == NULL)
- return;
+ return NULL;
udev_device->refcount--;
if (udev_device->refcount > 0)
- return;
+ return udev_device;
if (udev_device->parent_device != NULL)
udev_device_unref(udev_device->parent_device);
free(udev_device->syspath);
free(udev_device->envp);
free(udev_device->monitor_buf);
free(udev_device);
+ return NULL;
}
/**
* udev_device_get_sysname:
* @udev_device: udev device
*
- * Returns: the sys name of the device device
+ * Get the kernel device name in /sys.
+ *
+ * Returns: the name string of the device device
**/
_public_ const char *udev_device_get_sysname(struct udev_device *udev_device)
{
* udev_device_get_sysnum:
* @udev_device: udev device
*
- * Returns: the trailing number of of the device name
+ * Get the instance number of the device.
+ *
+ * Returns: the trailing number string of of the device name
**/
_public_ const char *udev_device_get_sysnum(struct udev_device *udev_device)
{
udev_device->syspath = strdup(syspath);
if (udev_device->syspath == NULL)
return -ENOMEM;
- udev_device->devpath = udev_device->syspath + strlen(TEST_PREFIX "/sys");
+ udev_device->devpath = udev_device->syspath + strlen("/sys");
udev_device_add_property(udev_device, "DEVPATH", udev_device->devpath);
pos = strrchr(udev_device->syspath, '/');
{
free(udev_device->devnode);
if (devnode[0] != '/') {
- if (asprintf(&udev_device->devnode, TEST_PREFIX "/dev/%s", devnode) < 0)
+ if (asprintf(&udev_device->devnode, "/dev/%s", devnode) < 0)
udev_device->devnode = NULL;
} else {
udev_device->devnode = strdup(devnode);
return udev_list_get_entry(&udev_device->tags_list);
}
+/**
+ * udev_device_has_tag:
+ * @udev_device: udev device
+ * @tag: tag name
+ *
+ * Check if a given device has a certain tag associated.
+ *
+ * Returns: 1 if the tag is found. 0 otherwise.
+ **/
_public_ int udev_device_has_tag(struct udev_device *udev_device, const char *tag)
{
struct udev_list_entry *list_entry;
~ianmdlvl / elogind.git / blobdiff