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/>.
32 #include <sys/mount.h>
33 #include <sys/signalfd.h>
37 #include "udev-util.h"
39 void udev_main_log(struct udev *udev, int priority,
40 const char *file, int line, const char *fn,
41 const char *format, va_list args) {}
43 static int fake_filesystems(void) {
44 static const struct fakefs {
49 { "test/sys", "/sys", "failed to mount test /sys" },
50 { "test/dev", "/dev", "failed to mount test /dev" },
51 { "test/run", "/run", "failed to mount test /run" },
52 { "test/run", "/etc/udev/rules.d", "failed to mount empty /etc/udev/rules.d" },
53 { "test/run", "/usr/lib/udev/rules.d", "failed to mount empty /usr/lib/udev/rules.d" },
58 err = unshare(CLONE_NEWNS);
61 fprintf(stderr, "failed to call unshare(): %m\n");
65 if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0) {
67 fprintf(stderr, "failed to mount / as private: %m\n");
71 for (i = 0; i < ELEMENTSOF(fakefss); i++) {
72 err = mount(fakefss[i].src, fakefss[i].target, NULL, MS_BIND, NULL);
75 fprintf(stderr, "%s %m", fakefss[i].error);
84 int main(int argc, char *argv[])
86 _cleanup_udev_unref_ struct udev *udev = NULL;
87 _cleanup_udev_event_unref_ struct udev_event *event = NULL;
88 _cleanup_udev_device_unref_ struct udev_device *dev = NULL;
89 _cleanup_udev_rules_unref_ struct udev_rules *rules = NULL;
90 char syspath[UTIL_PATH_SIZE];
93 sigset_t mask, sigmask_orig;
96 err = fake_filesystems();
104 log_debug("version %s\n", VERSION);
107 sigprocmask(SIG_SETMASK, NULL, &sigmask_orig);
110 if (action == NULL) {
111 log_error("action missing\n");
116 if (devpath == NULL) {
117 log_error("devpath missing\n");
121 rules = udev_rules_new(udev, 1);
123 strscpyl(syspath, sizeof(syspath), "/sys", devpath, NULL);
124 dev = udev_device_new_from_syspath(udev, syspath);
126 log_debug("unknown device '%s'\n", devpath);
130 udev_device_set_action(dev, action);
131 event = udev_event_new(dev);
134 sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);
135 event->fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
136 if (event->fd_signal < 0) {
137 fprintf(stderr, "error creating signalfd\n");
141 /* do what devtmpfs usually provides us */
142 if (udev_device_get_devnode(dev) != NULL) {
145 if (streq(udev_device_get_subsystem(dev), "block"))
150 if (!streq(action, "remove")) {
151 mkdir_parents_label(udev_device_get_devnode(dev), 0755);
152 mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev));
154 unlink(udev_device_get_devnode(dev));
155 util_delete_path(udev, udev_device_get_devnode(dev));
159 err = udev_event_execute_rules(event, rules, &sigmask_orig);
161 udev_event_execute_run(event, NULL);
163 if (event != NULL && event->fd_signal >= 0)
164 close(event->fd_signal);
167 return err ? EXIT_FAILURE : EXIT_SUCCESS;