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>
22 #include "../libc-compat.h"
26 static struct uloop_process udevtrigger
;
28 static void coldplug_complete(struct uloop_timeout
*t
)
30 DEBUG(4, "Coldplug complete\n");
31 hotplug_last_event(NULL
);
35 static void udevtrigger_complete(struct uloop_process
*proc
, int ret
)
37 DEBUG(4, "Finished udevtrigger\n");
38 hotplug_last_event(coldplug_complete
);
41 void procd_coldplug(void)
43 char *argv
[] = { "udevtrigger", NULL
};
44 unsigned int oldumask
= umask(0);
46 umount2("/dev/pts", MNT_DETACH
);
47 umount2("/dev/", MNT_DETACH
);
48 mount("tmpfs", "/dev", "tmpfs", MS_NOSUID
, "mode=0755,size=512K");
49 ignore(symlink("/tmp/shm", "/dev/shm"));
50 mkdir("/dev/pts", 0755);
52 mount("devpts", "/dev/pts", "devpts", MS_NOEXEC
| MS_NOSUID
, 0);
53 udevtrigger
.cb
= udevtrigger_complete
;
54 udevtrigger
.pid
= fork();
55 if (!udevtrigger
.pid
) {
56 execvp(argv
[0], argv
);
57 ERROR("Failed to start coldplug\n");
61 if (udevtrigger
.pid
<= 0) {
62 ERROR("Failed to start new coldplug instance\n");
66 uloop_process_add(&udevtrigger
);
68 DEBUG(4, "Launched coldplug instance, pid=%d\n", (int) udevtrigger
.pid
);