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>
36 #include "udev-util.h"
38 void udev_main_log(struct udev *udev, int priority,
39 const char *file, int line, const char *fn,
40 const char *format, va_list args) {}
42 static int fake_filesystems(void) {
43 static const struct fakefs {
48 { "test/sys", "/sys", "failed to mount test /sys" },
49 { "test/dev", "/dev", "failed to mount test /dev" },
50 { "test/run", "/run", "failed to mount test /run" },
51 { "test/run", "/etc/udev/rules.d", "failed to mount empty /etc/udev/rules.d" },
52 { "test/run", "/usr/lib/udev/rules.d", "failed to mount empty /usr/lib/udev/rules.d" },
57 err = unshare(CLONE_NEWNS);
60 fprintf(stderr, "failed to call unshare(): %m\n");
64 if (mount(NULL, "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0) {
66 fprintf(stderr, "failed to mount / as private: %m\n");
70 for (i = 0; i < ELEMENTSOF(fakefss); i++) {
71 err = mount(fakefss[i].src, fakefss[i].target, NULL, MS_BIND, NULL);
74 fprintf(stderr, "%s %m", fakefss[i].error);
82 int main(int argc, char *argv[]) {
83 _cleanup_udev_unref_ struct udev *udev = NULL;
84 _cleanup_udev_event_unref_ struct udev_event *event = NULL;
85 _cleanup_udev_device_unref_ struct udev_device *dev = NULL;
86 _cleanup_udev_rules_unref_ struct udev_rules *rules = NULL;
87 char syspath[UTIL_PATH_SIZE];
90 sigset_t mask, sigmask_orig;
93 err = fake_filesystems();
101 log_debug("version %s", VERSION);
104 sigprocmask(SIG_SETMASK, NULL, &sigmask_orig);
107 if (action == NULL) {
108 log_error("action missing");
113 if (devpath == NULL) {
114 log_error("devpath missing");
118 rules = udev_rules_new(udev, 1);
120 strscpyl(syspath, sizeof(syspath), "/sys", devpath, NULL);
121 dev = udev_device_new_from_syspath(udev, syspath);
123 log_debug("unknown device '%s'", devpath);
127 udev_device_set_action(dev, action);
128 event = udev_event_new(dev);
131 sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);
132 event->fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
133 if (event->fd_signal < 0) {
134 fprintf(stderr, "error creating signalfd\n");
138 /* do what devtmpfs usually provides us */
139 if (udev_device_get_devnode(dev) != NULL) {
142 if (streq(udev_device_get_subsystem(dev), "block"))
147 if (!streq(action, "remove")) {
148 mkdir_parents_label(udev_device_get_devnode(dev), 0755);
149 mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev));
151 unlink(udev_device_get_devnode(dev));
152 util_delete_path(udev, udev_device_get_devnode(dev));
156 udev_event_execute_rules(event, USEC_PER_SEC, rules, &sigmask_orig);
157 udev_event_execute_run(event, USEC_PER_SEC, NULL);
159 if (event != NULL && event->fd_signal >= 0)
160 close(event->fd_signal);
163 return err ? EXIT_FAILURE : EXIT_SUCCESS;