udev-restart.patch

   1 diff --git a/udevcontrol.c b/udevcontrol.c
   2 index a983f22..4220eda 100644
   3 --- a/udevcontrol.c
   4 +++ b/udevcontrol.c
   5 @@ -83,6 +83,8 @@ int main(int argc, char *argv[], char *e
   6                         ctrl_msg.type = UDEVD_CTRL_START_EXEC_QUEUE;
   7                 else if (!strcmp(arg, "reload_rules"))
   8                         ctrl_msg.type = UDEVD_CTRL_RELOAD_RULES;
   9 +               else if (!strcmp(arg, "restart"))
  10 +                       ctrl_msg.type = UDEVD_CTRL_RESTART;
  11                 else if (!strncmp(arg, "log_priority=", strlen("log_priority="))) {
  12                         intval = (int *) ctrl_msg.buf;
  13                         val = &arg[strlen("log_priority=")];
  14 @@ -123,6 +125,7 @@ int main(int argc, char *argv[], char *e
  15                                 "  stop_exec_queue        keep udevd from executing events, queue only\n"
  16                                 "  start_exec_queue       execute events, flush queue\n"
  17                                 "  reload_rules           reloads the rules files\n"
  18 +                               "  restart                tells udevd to restart itself\n"
  19                                 "  max_childs=<N>         maximum number of childs\n"
  20                                 "  max_childs_running=<N> maximum number of childs running at the same time\n"
  21                                 "  --help                 print this help text\n\n");
  22 diff --git a/udevd.c b/udevd.c
  23 index bb956b5..6e8f6df 100644
  24 --- a/udevd.c
  25 +++ b/udevd.c
  26 @@ -703,6 +703,13 @@ static void get_ctrl_msg(void)
  27                 info("udevd message (RELOAD_RULES) received");
  28                 reload_config = 1;
  29                 break;
  30 +       case UDEVD_CTRL_RESTART: {
  31 +               char *argv[2] = { "/proc/self/exe", NULL };
  32 +               info("udevd message (RESTART) received");
  33 +               if (execve(argv[0], argv, environ) == -1)
  34 +                       err("unable to restart udevd: %s", strerror(errno));
  35 +               break;
  36 +       }
  37         default:
  38                 err("unknown control message type");
  39         }
  40 @@ -847,6 +854,9 @@ static int init_udevd_socket(void)
  41
  42         /* enable receiving of the sender credentials */
  43         setsockopt(udevd_sock, SOL_SOCKET, SO_PASSCRED, &feature_on, sizeof(feature_on));
  44 +       retval = fcntl(udevd_sock, F_GETFD);
  45 +       if (retval != -1)
  46 +               fcntl(udevd_sock, F_SETFD, retval | FD_CLOEXEC);
  47
  48         return 0;
  49  }
  50 diff --git a/udevd.h b/udevd.h
  51 index fce86e7..d681da5 100644
  52 --- a/udevd.h
  53 +++ b/udevd.h
  54 @@ -46,6 +46,7 @@ enum udevd_ctrl_msg_type {
  55         UDEVD_CTRL_SET_MAX_CHILDS,
  56         UDEVD_CTRL_SET_MAX_CHILDS_RUNNING,
  57         UDEVD_CTRL_RELOAD_RULES,
  58 +       UDEVD_CTRL_RESTART,
  59  };
  60
  61  struct udevd_ctrl_msg {