2 * Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
3 * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License version 2.1
7 * as published by the Free Software Foundation
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
16 #include <sys/types.h>
17 #include <sys/mount.h>
23 #include "../libc-compat.h"
26 #include "../container.h"
28 static struct uloop_process udevtrigger;
30 static void coldplug_complete(struct uloop_timeout *t)
32 DEBUG(4, "Coldplug complete\n");
33 hotplug_last_event(NULL);
37 static void udevtrigger_complete(struct uloop_process *proc, int ret)
39 DEBUG(4, "Finished udevtrigger\n");
40 hotplug_last_event(coldplug_complete);
43 void procd_coldplug(void)
45 char *argv[] = { "udevtrigger", NULL };
46 unsigned int oldumask = umask(0);
48 if (!is_container()) {
49 umount2("/dev/pts", MNT_DETACH);
50 umount2("/dev/", MNT_DETACH);
51 mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755,size=512K");
52 mkdir("/dev/pts", 0755);
53 mount("devpts", "/dev/pts", "devpts", MS_NOEXEC | MS_NOSUID, 0);
56 ignore(symlink("/tmp/shm", "/dev/shm"));
58 udevtrigger.cb = udevtrigger_complete;
59 udevtrigger.pid = fork();
60 if (!udevtrigger.pid) {
61 execvp(argv[0], argv);
62 ERROR("Failed to start coldplug: %m\n");
66 if (udevtrigger.pid <= 0) {
67 ERROR("Failed to start new coldplug instance: %m\n");
71 uloop_process_add(&udevtrigger);
73 DEBUG(4, "Launched coldplug instance, pid=%d\n", (int) udevtrigger.pid);