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/*
* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <unistd.h>
#include "../procd.h"
#include "hotplug.h"
static struct uloop_process udevtrigger;
static void coldplug_complete(struct uloop_timeout *t)
{
DEBUG(4, "Coldplug complete\n");
hotplug_last_event(NULL);
procd_state_next();
}
static void udevtrigger_complete(struct uloop_process *proc, int ret)
{
DEBUG(4, "Finished udevtrigger\n");
hotplug_last_event(coldplug_complete);
}
void procd_coldplug(void)
{
char *argv[] = { "udevtrigger", NULL };
unsigned int oldumask = umask(0);
umount2("/dev/pts", MNT_DETACH);
umount2("/dev/", MNT_DETACH);
mount("tmpfs", "/dev", "tmpfs", MS_NOSUID, "mode=0755,size=512K");
symlink("/tmp/shm", "/dev/shm");
mkdir("/dev/pts", 0755);
umask(oldumask);
mount("devpts", "/dev/pts", "devpts", MS_NOEXEC | MS_NOSUID, 0);
udevtrigger.cb = udevtrigger_complete;
udevtrigger.pid = fork();
if (!udevtrigger.pid) {
execvp(argv[0], argv);
ERROR("Failed to start coldplug\n");
exit(-1);
}
if (udevtrigger.pid <= 0) {
ERROR("Failed to start new coldplug instance\n");
return;
}
uloop_process_add(&udevtrigger);
DEBUG(4, "Launched coldplug instance, pid=%d\n", (int) udevtrigger.pid);
}
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