udevd: don't free event when killing the worker, wait until it has been reaped

[elogind.git] / src / udev / udevd.c

diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index 0556356f658dc4bf6b13c374c945de982101db2e..9426edca2eba93b7bee9c538bed1c657fd8b0e1b 100644 (file)
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -903,6 +903,20 @@ static void handle_signal(struct udev *udev, int signo) {
         }
 }
 
+static void event_queue_update(void) {
+        int r;
+
+        if (!udev_list_node_is_empty(&event_list)) {
+                r = touch("/run/udev/queue");
+                if (r < 0)
+                        log_warning_errno(r, "could not touch /run/udev/queue: %m");
+        } else {
+                r = unlink("/run/udev/queue");
+                if (r < 0 && errno != ENOENT)
+                        log_warning("could not unlink /run/udev/queue: %m");
+        }
+}
+
 static int systemd_fds(struct udev *udev, int *rctrl, int *rnetlink) {
         int ctrl = -1, netlink = -1;
         int fd, n;
@@ -1363,15 +1377,7 @@ int main(int argc, char *argv[]) {
                 }
 
                 /* tell settle that we are busy or idle */
-                if (!udev_list_node_is_empty(&event_list)) {
-                        int fd;
-
-                        fd = open("/run/udev/queue", O_WRONLY|O_CREAT|O_CLOEXEC|O_TRUNC|O_NOFOLLOW, 0444);
-                        if (fd >= 0)
-                                close(fd);
-                } else {
-                        unlink("/run/udev/queue");
-                }
+                event_queue_update();
 
                 fdcount = epoll_wait(fd_ep, ev, ELEMENTSOF(ev), timeout);
                 if (fdcount < 0)
@@ -1408,12 +1414,8 @@ int main(int argc, char *argv[]) {
                                                 kill(worker->pid, SIGKILL);
                                                 worker->state = WORKER_KILLED;
 
-                                                /* drop reference taken for state 'running' */
-                                                worker_unref(worker);
                                                 log_error("seq %llu '%s' killed", udev_device_get_seqnum(worker->event->dev), worker->event->devpath);
                                                 worker->event->exitcode = -64;
-                                                event_queue_delete(worker->event);
-                                                worker->event = NULL;
                                         } else if (!worker->event_warned) {
                                                 log_warning("worker ["PID_FMT"] %s is taking a long time", worker->pid, worker->event->devpath);
                                                 worker->event_warned = true;
@@ -1496,6 +1498,11 @@ int main(int argc, char *argv[]) {
                 if (is_inotify)
                         handle_inotify(udev);
 
+                /* tell settle that we are busy or idle, this needs to be before the
+                 * PING handling
+                 */
+                event_queue_update();
+
                 /*
                  * This needs to be after the inotify handling, to make sure,
                  * that the ping is send back after the possibly generated