Merge pull request #13582 from yuwata/udevadm-reload

udevadm: use 'udevadm control' to reload udevd

src/udev/udev-ctrl.c

@@ -76,6 +76,7 @@ int udev_ctrl_new_from_fd(struct udev_ctrl **ret, int fd) {
         *uctrl = (struct udev_ctrl) {
                 .n_ref = 1,
                 .sock = fd >= 0 ? fd : TAKE_FD(sock),
+                .sock_connect = -1,
                 .bound = fd >= 0,
         };
 
@@ -394,14 +395,13 @@ int udev_ctrl_wait(struct udev_ctrl *uctrl, usec_t timeout) {
         (void) sd_event_source_set_description(source_io, "udev-ctrl-wait-io");
 
         if (timeout != USEC_INFINITY) {
-                usec_t usec;
-
-                usec = now(clock_boottime_or_monotonic()) + timeout;
-                r = sd_event_add_time(uctrl->event, &source_timeout, clock_boottime_or_monotonic(), usec, 0, NULL, INT_TO_PTR(-ETIMEDOUT));
+                r = sd_event_add_time(uctrl->event, &source_timeout, clock_boottime_or_monotonic(),
+                                      usec_add(now(clock_boottime_or_monotonic()), timeout),
+                                      0, NULL, INT_TO_PTR(-ETIMEDOUT));
                 if (r < 0)
                         return r;
 
-                (void) sd_event_source_set_description(source_timeout, "udev-ctrl-wait-io");
+                (void) sd_event_source_set_description(source_timeout, "udev-ctrl-wait-timeout");
         }
 
         return sd_event_loop(uctrl->event);

units/systemd-udevd.service.in

@@ -23,6 +23,7 @@ Sockets=systemd-udevd-control.socket systemd-udevd-kernel.socket
 Restart=always
 RestartSec=0
 ExecStart=@rootlibexecdir@/systemd-udevd
+ExecReload=@rootbindir@/udevadm control --reload --timeout 0
 KillMode=mixed
 WatchdogSec=3min
 TasksMax=infinity