- 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) {
- 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 run;
- }
- dbg("opened class_dev->name='%s'", class_dev->name);
- wait_for_class_device(class_dev, &error);
-
- /* get major/minor */
- if (udev.type == DEV_BLOCK || udev.type == DEV_CLASS) {
- udev.devt = get_devt(class_dev);
- if (udev.devt) {
- /* name device */
- udev_rules_get_name(&udev, class_dev);
- if (udev.ignore_device) {
- info("device event will be ignored");
- goto exit;
- }
- if (udev.name[0] == '\0') {
- info("device node creation supressed");
- goto run;
- }
-
- /* 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 exit;
- }
- }
- }
- sysfs_close_class_device(class_dev);
- } else if (strcmp(action, "remove") == 0) {
- dbg("node remove");
- udev_rules_get_run(&udev, NULL);
- if (udev.ignore_device) {
- dbg("device event will be ignored");
- goto exit;
- }
-
- /* get name from db, remove db-entry, delete node */
- retval = udev_remove_device(&udev);
- }