-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
if ((r = device_find_escape_name(m, path, &u)) < 0)
return r;
- /* If this is a different unit, then let's not merge things */
- if (u && DEVICE(u)->sysfs && !path_equal(DEVICE(u)->sysfs, sysfs)) {
- log_error("Hmm, something's broken. Asked to create two devices with same name but different sysfs paths.");
+ /* If a different unit already claimed this name then let's do
+ * nothing. This can happen for example when two disks with
+ * the same label are plugged in, and which hence try to get
+ * conflicting symlinks in /dev/disk/by-label/xxxx */
+ if (u && DEVICE(u)->sysfs && !path_equal(DEVICE(u)->sysfs, sysfs))
return -EEXIST;
- }
if (!u) {
delete = true;
first = udev_device_get_devlinks_list_entry(dev);
udev_list_entry_foreach(item, first) {
const char *p;
+ struct stat st;
/* Don't bother with the /dev/block links */
p = udev_list_entry_get_name(item);
path_startswith(p, "/dev/char/"))
continue;
+ /* Verify that the symlink in the FS actually belongs
+ * to this device. This is useful to deal with
+ * conflicting devices, e.g. when two disks want the
+ * same /dev/disk/by-label/xxx link because they have
+ * the same label. We want to make sure that the same
+ * device that won the symlink wins in systemd, so we
+ * check the device node major/minor*/
+ if (stat(p, &st) >= 0)
+ if ((!S_ISBLK(st.st_mode) && !S_ISCHR(st.st_mode)) ||
+ st.st_rdev != udev_device_get_devnum(dev))
+ continue;
+
device_update_unit(m, dev, p, false);
}
.no_instances = true,
.no_snapshots = true,
.no_isolate = true,
- .no_alias = true,
.init = device_init,
.active_state = device_active_state,
.sub_state_to_string = device_sub_state_to_string,
+ .bus_interface = "org.freedesktop.systemd1.Device",
.bus_message_handler = bus_device_message_handler,
+ .bus_invalidating_properties = bus_device_invalidating_properties,
.following = device_following,