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-rw-r--r--src/udev/udevd.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index ccdec3de43..121491753a 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -69,7 +69,7 @@ typedef struct Manager {
sd_event *event;
Hashmap *workers;
struct udev_list_node events;
- char *cgroup;
+ const char *cgroup;
pid_t pid; /* the process that originally allocated the manager object */
struct udev_rules *rules;
@@ -307,7 +307,6 @@ static void manager_free(Manager *manager) {
udev_list_cleanup(&manager->properties);
udev_rules_unref(manager->rules);
- free(manager->cgroup);
safe_close(manager->fd_inotify);
safe_close_pair(manager->worker_watch);
@@ -1443,7 +1442,7 @@ static int parse_argv(int argc, char *argv[]) {
return 1;
}
-static int manager_new(Manager **ret) {
+static int manager_new(Manager **ret, const char *cgroup) {
_cleanup_(manager_freep) Manager *manager = NULL;
int r, fd_ctrl, fd_uevent;
@@ -1470,6 +1469,8 @@ static int manager_new(Manager **ret) {
udev_list_node_init(&manager->events);
udev_list_init(manager->udev, &manager->properties, true);
+ manager->cgroup = cgroup;
+
r = listen_fds(&fd_ctrl, &fd_uevent);
if (r >= 0) {
/* get control and netlink socket from systemd */
@@ -1480,11 +1481,6 @@ static int manager_new(Manager **ret) {
manager->monitor = udev_monitor_new_from_netlink_fd(manager->udev, "kernel", fd_uevent);
if (!manager->monitor)
return log_error_errno(EINVAL, "error taking over netlink socket");
-
- /* get our own cgroup, we regularly kill everything udev has left behind */
- r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &manager->cgroup);
- if (r < 0)
- log_warning_errno(r, "failed to get cgroup: %m");
} else {
/* open control and netlink socket */
manager->ctrl = udev_ctrl_new(manager->udev);
@@ -1598,6 +1594,7 @@ static int manager_listen(Manager *manager) {
int main(int argc, char *argv[]) {
_cleanup_(manager_freep) Manager *manager = NULL;
+ _cleanup_free_ char *cgroup = NULL;
int r;
log_set_target(LOG_TARGET_AUTO);
@@ -1655,7 +1652,16 @@ int main(int argc, char *argv[]) {
dev_setup(NULL, UID_INVALID, GID_INVALID);
- r = manager_new(&manager);
+ if (getppid() == 1) {
+ /* get our own cgroup, we regularly kill everything udev has left behind
+ we only do this on systemd systems, and only if we are directly spawned
+ by PID1. otherwise we are not guaranteed to have a dedicated cgroup */
+ r = cg_pid_get_path(SYSTEMD_CGROUP_CONTROLLER, 0, &cgroup);
+ if (r < 0)
+ log_warning_errno(r, "failed to get cgroup: %m");
+ }
+
+ r = manager_new(&manager, cgroup);
if (r < 0)
goto exit;