diff options
Diffstat (limited to 'src/udev')
| -rw-r--r-- | src/udev/udevd.c | 24 |
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; |