/* * Copyright (C) 2013 Felix Fietkau * Copyright (C) 2013 John Crispin * * 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 #include #include #include #include #include "../procd.h" #include "../libc-compat.h" #include "hotplug.h" #include "../container.h" static struct uloop_process udevtrigger; static void coldplug_complete(struct uloop_timeout *t) { P_DEBUG(4, "Coldplug complete\n"); hotplug_last_event(NULL); procd_state_next(); } static void udevtrigger_complete(struct uloop_process *proc, int ret) { P_DEBUG(4, "Finished udevtrigger\n"); hotplug_last_event(coldplug_complete); } void procd_coldplug(void) { char *argv[] = { "udevtrigger", NULL }; unsigned int oldumask = umask(0); if (!is_container()) { umount2("/dev/pts", MNT_DETACH); umount2("/dev/", MNT_DETACH); mount("tmpfs", "/dev", "tmpfs", MS_NOATIME | MS_NOEXEC | MS_NOSUID, "mode=0755,size=512K"); mkdir("/dev/pts", 0755); mount("devpts", "/dev/pts", "devpts", MS_NOATIME | MS_NOEXEC | MS_NOSUID, 0); } ignore(symlink("/tmp/shm", "/dev/shm")); umask(oldumask); udevtrigger.cb = udevtrigger_complete; udevtrigger.pid = fork(); if (!udevtrigger.pid) { execvp(argv[0], argv); ERROR("Failed to start coldplug: %m\n"); exit(EXIT_FAILURE); } if (udevtrigger.pid <= 0) { ERROR("Failed to start new coldplug instance: %m\n"); return; } uloop_process_add(&udevtrigger); P_DEBUG(4, "Launched coldplug instance, pid=%d\n", (int) udevtrigger.pid); }