2 This file is part of systemd.
4 Copyright 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
5 Copyright 2004-2012 Kay Sievers <kay@vrfy.org>
7 systemd is free software; you can redistribute it and/or modify it
8 under the terms of the GNU Lesser General Public License as published by
9 the Free Software Foundation; either version 2.1 of the License, or
10 (at your option) any later version.
12 systemd is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with systemd; If not, see <http://www.gnu.org/licenses/>.
31 #include <sys/mount.h>
32 #include <sys/signalfd.h>
35 #include "selinux-util.h"
37 #include "udev-util.h"
39 static int fake_filesystems(void) {
40 static const struct fakefs {
45 { "test/sys", "/sys", "failed to mount test /sys" },
46 { "test/dev", "/dev", "failed to mount test /dev" },
47 { "test/run", "/run", "failed to mount test /run" },
48 { "test/run", "/etc/udev/rules.d", "failed to mount empty /etc/udev/rules.d" },
49 { "test/run", "/usr/lib/udev/rules.d", "failed to mount empty /usr/lib/udev/rules.d" },
54 err = unshare(CLONE_NEWNS);
57 fprintf(stderr, "failed to call unshare(): %m\n");
61 if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0) {
63 fprintf(stderr, "failed to mount / as private: %m\n");
67 for (i = 0; i < ELEMENTSOF(fakefss); i++) {
68 err = mount(fakefss[i].src, fakefss[i].target, NULL, MS_BIND, NULL);
71 fprintf(stderr, "%s %m", fakefss[i].error);
79 int main(int argc, char *argv[]) {
80 _cleanup_udev_unref_ struct udev *udev = NULL;
81 _cleanup_udev_event_unref_ struct udev_event *event = NULL;
82 _cleanup_udev_device_unref_ struct udev_device *dev = NULL;
83 _cleanup_udev_rules_unref_ struct udev_rules *rules = NULL;
84 char syspath[UTIL_PATH_SIZE];
87 sigset_t mask, sigmask_orig;
90 err = fake_filesystems();
98 log_debug("version %s", VERSION);
99 mac_selinux_init("/dev");
101 sigprocmask(SIG_SETMASK, NULL, &sigmask_orig);
104 if (action == NULL) {
105 log_error("action missing");
110 if (devpath == NULL) {
111 log_error("devpath missing");
115 rules = udev_rules_new(udev, 1);
117 strscpyl(syspath, sizeof(syspath), "/sys", devpath, NULL);
118 dev = udev_device_new_from_syspath(udev, syspath);
120 log_debug("unknown device '%s'", devpath);
124 udev_device_set_action(dev, action);
125 event = udev_event_new(dev);
128 sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);
129 event->fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
130 if (event->fd_signal < 0) {
131 fprintf(stderr, "error creating signalfd\n");
135 /* do what devtmpfs usually provides us */
136 if (udev_device_get_devnode(dev) != NULL) {
139 if (streq(udev_device_get_subsystem(dev), "block"))
144 if (!streq(action, "remove")) {
145 mkdir_parents_label(udev_device_get_devnode(dev), 0755);
146 mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev));
148 unlink(udev_device_get_devnode(dev));
149 rmdir_parents(udev_device_get_devnode(dev), "/");
153 udev_event_execute_rules(event,
154 3 * USEC_PER_SEC, USEC_PER_SEC,
158 udev_event_execute_run(event,
159 3 * USEC_PER_SEC, USEC_PER_SEC,
162 if (event != NULL && event->fd_signal >= 0)
163 close(event->fd_signal);
164 mac_selinux_finish();
166 return err ? EXIT_FAILURE : EXIT_SUCCESS;