}
#endif
-/* Decide if we should manage the whole uevent, including multiplexing
- * of the hotplug directories.
- * For now look if the kernel calls udevsend instead of /sbin/hotplug,
- * or the uevent-helper in /proc/sys/kernel/hotplug is empty.
- */
-static int manage_hotplug_event(void) {
- char helper[256];
- int fd;
- int len;
-
- /* don't handle hotplug.d if we are called directly */
- if (!getenv("UDEVD_EVENT"))
- return 0;
-
- fd = open("/proc/sys/kernel/hotplug", O_RDONLY);
- if (fd < 0)
- return 0;
-
- len = read(fd, helper, sizeof(helper)-1);
- close(fd);
-
- if (len < 0)
- return 0;
- helper[len] = '\0';
-
- if (helper[0] == '\0' || helper[0] == '\n')
- return 1;
- if (strstr(helper, "udevsend"))
- return 1;
-
- return 0;
-}
-
static void asmlinkage sig_handler(int signum)
{
switch (signum) {
int main(int argc, char *argv[], char *envp[])
{
- struct sysfs_class_device *class_dev;
- struct sysfs_device *devices_dev;
struct udevice udev;
char path[PATH_SIZE];
const char *error;
const char *action;
const char *devpath;
const char *subsystem;
- int managed_event;
struct sigaction act;
int retval = -EINVAL;
/* trigger timeout to prevent hanging processes */
alarm(ALARM_TIMEOUT);
- /* let the executed programs know if we handle the whole hotplug event */
- managed_event = manage_hotplug_event();
- if (managed_event)
- setenv("MANAGED_EVENT", "1", 1);
-
action = getenv("ACTION");
devpath = getenv("DEVPATH");
subsystem = getenv("SUBSYSTEM");
if (!subsystem && argc == 2)
subsystem = argv[1];
- udev_init_device(&udev, devpath, subsystem, action);
-
if (!action || !subsystem || !devpath) {
err("action, subsystem or devpath missing");
- goto hotplug;
+ goto exit;
}
- /* export logging flag, as called scripts may want to do the same as udev */
+ /* export log_level , as called programs may want to do the same as udev */
if (udev_log_priority) {
char priority[32];
setenv("UDEV_LOG", priority, 1);
}
- if (udev.type == DEV_BLOCK || udev.type == DEV_CLASS || udev.type == DEV_NET) {
- udev_rules_init();
+ udev_init_device(&udev, devpath, subsystem, action);
+ udev_rules_init();
+ if (udev.type == DEV_BLOCK || udev.type == DEV_CLASS || udev.type == DEV_NET) {
+ /* handle device node */
if (strcmp(action, "add") == 0) {
- /* wait for sysfs and possibly add node */
- dbg("udev add");
-
- /* skip subsystems without "dev", but handle net devices */
- if (udev.type != DEV_NET && subsystem_expect_no_dev(udev.subsystem)) {
- dbg("don't care about '%s' devices", udev.subsystem);
- goto hotplug;
- }
+ struct sysfs_class_device *class_dev;
+ /* wait for sysfs of /sys/class /sys/block */
+ dbg("node add");
snprintf(path, sizeof(path), "%s%s", sysfs_path, udev.devpath);
path[sizeof(path)-1] = '\0';
class_dev = wait_class_device_open(path);
if (class_dev == NULL) {
dbg("open class device failed");
- goto hotplug;
+ goto run;
}
dbg("opened class_dev->name='%s'", class_dev->name);
-
wait_for_class_device(class_dev, &error);
- /* name, create node, store in db */
- retval = udev_add_device(&udev, class_dev);
-
+ /* get major/minor */
+ if (udev.type == DEV_BLOCK || udev.type == DEV_CLASS)
+ udev.devt = get_devt(class_dev);
+
+ if (udev.type == DEV_NET || udev.devt) {
+ /* name device */
+ udev_rules_get_name(&udev, class_dev);
+ if (udev.ignore_device) {
+ info("device event will be ignored");
+ goto cleanup;
+ }
+ if (udev.name[0] == '\0') {
+ info("device node creation supressed");
+ goto cleanup;
+ }
+
+ /* create node, store in db */
+ retval = udev_add_device(&udev, class_dev);
+ } else {
+ dbg("no dev-file found");
+ udev_rules_get_run(&udev, NULL);
+ if (udev.ignore_device) {
+ info("device event will be ignored");
+ goto cleanup;
+ }
+ }
sysfs_close_class_device(class_dev);
} else if (strcmp(action, "remove") == 0) {
- /* possibly remove a node */
- dbg("udev remove");
-
- /* skip subsystems without "dev" */
- if (subsystem_expect_no_dev(udev.subsystem)) {
- dbg("don't care about '%s' devices", udev.subsystem);
- goto hotplug;
- }
-
- udev_rules_get_run(&udev);
+ dbg("node remove");
+ udev_rules_get_run(&udev, NULL);
if (udev.ignore_device) {
dbg("device event will be ignored");
- goto hotplug;
+ goto cleanup;
}
- /* get node from db, remove db-entry, delete created node */
+ /* get name from db, remove db-entry, delete node */
retval = udev_remove_device(&udev);
}
+ /* export name of device node or netif */
if (udev.devname[0] != '\0')
setenv("DEVNAME", udev.devname, 1);
-
- if (udev_run && !list_empty(&udev.run_list)) {
- struct name_entry *name_loop;
-
- dbg("executing run list");
- list_for_each_entry(name_loop, &udev.run_list, node)
- execute_command(name_loop->name, udev.subsystem);
- }
-
} else if (udev.type == DEV_DEVICE) {
if (strcmp(action, "add") == 0) {
- /* wait for sysfs */
- dbg("devices add");
+ struct sysfs_device *devices_dev;
+ /* wait for sysfs of /sys/devices/ */
+ dbg("devices add");
snprintf(path, sizeof(path), "%s%s", sysfs_path, devpath);
path[sizeof(path)-1] = '\0';
devices_dev = wait_devices_device_open(path);
if (!devices_dev) {
dbg("devices device unavailable (probably remove has beaten us)");
- goto hotplug;
+ goto run;
}
dbg("devices device opened '%s'", path);
-
wait_for_devices_device(devices_dev, &error);
-
+ udev_rules_get_run(&udev, devices_dev);
sysfs_close_device(devices_dev);
+ if (udev.ignore_device) {
+ info("device event will be ignored");
+ goto cleanup;
+ }
} else if (strcmp(action, "remove") == 0) {
dbg("devices remove");
+ udev_rules_get_run(&udev, NULL);
+ if (udev.ignore_device) {
+ info("device event will be ignored");
+ goto cleanup;
+ }
}
- } else {
- dbg("unhandled");
}
-hotplug:
- if (udev_hotplug_d && managed_event)
- udev_multiplex_directory(&udev, HOTPLUGD_DIR, HOTPLUG_SUFFIX);
+run:
+ if (udev_run && !list_empty(&udev.run_list)) {
+ struct name_entry *name_loop;
+
+ dbg("executing run list");
+ list_for_each_entry(name_loop, &udev.run_list, node)
+ execute_command(name_loop->name, udev.subsystem);
+ }
+cleanup:
udev_cleanup_device(&udev);
+exit:
logging_close();
return retval;
}
~ianmdlvl / elogind.git / blobdiff