int main(int argc, char *argv[]) {
struct udev *udev;
static const struct option options[] = {
{ "debug", no_argument, NULL, 'd' },
{ "help", no_argument, NULL, 'h' },
{ "version", no_argument, NULL, 'V' },
{}
};
const char *command;
unsigned int i;
int rc = 1, c;
udev = udev_new();
if (udev == NULL)
goto out;
log_parse_environment();
log_open();
mac_selinux_init("/dev");
while ((c = getopt_long(argc, argv, "+dhV", options, NULL)) >= 0)
switch (c) {
case 'd':
log_set_max_level(LOG_DEBUG);
break;
case 'h':
rc = adm_help(udev, argc, argv);
goto out;
case 'V':
rc = adm_version(udev, argc, argv);
goto out;
default:
goto out;
}
command = argv[optind];
if (command != NULL)
for (i = 0; i < ELEMENTSOF(udevadm_cmds); i++)
if (streq(udevadm_cmds[i]->name, command)) {
argc -= optind;
argv += optind;
/* we need '0' here to reset the internal state */
optind = 0;
rc = run_command(udev, udevadm_cmds[i], argc, argv);
goto out;
}
fprintf(stderr, "%s: missing or unknown command\n", program_invocation_short_name);
rc = 2;
out:
mac_selinux_finish();
udev_unref(udev);
log_close();
return rc;
}
int main(int argc, char*argv[]) {
if (argc != 2) {
log_error("This program requires one argument.");
return EXIT_FAILURE;
}
log_set_target(LOG_TARGET_AUTO);
log_parse_environment();
log_open();
umask(0022);
mac_selinux_init(NULL);
if (streq(argv[1], "start")) {
int r = 0;
if (unlink("/run/nologin") < 0 && errno != ENOENT) {
log_error_errno(errno, "Failed to remove /run/nologin file: %m");
r = -errno;
}
if (unlink("/etc/nologin") < 0 && errno != ENOENT) {
/* If the file doesn't exist and /etc simply
* was read-only (in which case unlink()
* returns EROFS even if the file doesn't
* exist), don't complain */
if (errno != EROFS || access("/etc/nologin", F_OK) >= 0) {
log_error_errno(errno, "Failed to remove /etc/nologin file: %m");
return EXIT_FAILURE;
}
}
if (r < 0)
return EXIT_FAILURE;
} else if (streq(argv[1], "stop")) {
int r;
r = write_string_file_atomic_label("/run/nologin", "System is going down.");
if (r < 0) {
log_error_errno(r, "Failed to create /run/nologin: %m");
return EXIT_FAILURE;
}
} else {
log_error("Unknown verb %s.", argv[1]);
return EXIT_FAILURE;
}
mac_selinux_finish();
return EXIT_SUCCESS;
}
int main(int argc, char *argv[]) {
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_udev_event_unref_ struct udev_event *event = NULL;
_cleanup_udev_device_unref_ struct udev_device *dev = NULL;
_cleanup_udev_rules_unref_ struct udev_rules *rules = NULL;
char syspath[UTIL_PATH_SIZE];
const char *devpath;
const char *action;
sigset_t mask, sigmask_orig;
int err;
err = fake_filesystems();
if (err < 0)
return EXIT_FAILURE;
udev = udev_new();
if (udev == NULL)
return EXIT_FAILURE;
log_debug("version %s", VERSION);
mac_selinux_init("/dev");
sigprocmask(SIG_SETMASK, NULL, &sigmask_orig);
action = argv[1];
if (action == NULL) {
log_error("action missing");
goto out;
}
devpath = argv[2];
if (devpath == NULL) {
log_error("devpath missing");
goto out;
}
rules = udev_rules_new(udev, 1);
strscpyl(syspath, sizeof(syspath), "/sys", devpath, NULL);
dev = udev_device_new_from_synthetic_event(udev, syspath, action);
if (dev == NULL) {
log_debug("unknown device '%s'", devpath);
goto out;
}
event = udev_event_new(dev);
sigfillset(&mask);
sigprocmask(SIG_SETMASK, &mask, &sigmask_orig);
event->fd_signal = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
if (event->fd_signal < 0) {
fprintf(stderr, "error creating signalfd\n");
goto out;
}
/* do what devtmpfs usually provides us */
if (udev_device_get_devnode(dev) != NULL) {
mode_t mode = 0600;
if (streq(udev_device_get_subsystem(dev), "block"))
mode |= S_IFBLK;
else
mode |= S_IFCHR;
if (!streq(action, "remove")) {
mkdir_parents_label(udev_device_get_devnode(dev), 0755);
mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev));
} else {
unlink(udev_device_get_devnode(dev));
rmdir_parents(udev_device_get_devnode(dev), "/");
}
}
udev_event_execute_rules(event,
3 * USEC_PER_SEC, USEC_PER_SEC,
NULL,
rules,
&sigmask_orig);
udev_event_execute_run(event,
3 * USEC_PER_SEC, USEC_PER_SEC,
NULL);
out:
if (event != NULL && event->fd_signal >= 0)
close(event->fd_signal);
mac_selinux_finish();
return err ? EXIT_FAILURE : EXIT_SUCCESS;
}
int main(int argc, char *argv[]) {
_cleanup_udev_unref_ struct udev *udev = NULL;
_cleanup_udev_event_unref_ struct udev_event *event = NULL;
_cleanup_udev_device_unref_ struct udev_device *dev = NULL;
_cleanup_udev_rules_unref_ struct udev_rules *rules = NULL;
char syspath[UTIL_PATH_SIZE];
const char *devpath;
const char *action;
int err;
err = fake_filesystems();
if (err < 0)
return EXIT_FAILURE;
udev = udev_new();
if (udev == NULL)
return EXIT_FAILURE;
log_debug("version %s", VERSION);
mac_selinux_init("/dev");
action = argv[1];
if (action == NULL) {
log_error("action missing");
goto out;
}
devpath = argv[2];
if (devpath == NULL) {
log_error("devpath missing");
goto out;
}
rules = udev_rules_new(udev, 1);
strscpyl(syspath, sizeof(syspath), "/sys", devpath, NULL);
dev = udev_device_new_from_synthetic_event(udev, syspath, action);
if (dev == NULL) {
log_debug("unknown device '%s'", devpath);
goto out;
}
event = udev_event_new(dev);
assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGTERM, SIGINT, SIGHUP, SIGCHLD, -1) >= 0);
/* do what devtmpfs usually provides us */
if (udev_device_get_devnode(dev) != NULL) {
mode_t mode = 0600;
if (streq(udev_device_get_subsystem(dev), "block"))
mode |= S_IFBLK;
else
mode |= S_IFCHR;
if (!streq(action, "remove")) {
mkdir_parents_label(udev_device_get_devnode(dev), 0755);
mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev));
} else {
unlink(udev_device_get_devnode(dev));
rmdir_parents(udev_device_get_devnode(dev), "/");
}
}
udev_event_execute_rules(event,
3 * USEC_PER_SEC, USEC_PER_SEC,
NULL,
rules);
udev_event_execute_run(event,
3 * USEC_PER_SEC, USEC_PER_SEC);
out:
mac_selinux_finish();
return err ? EXIT_FAILURE : EXIT_SUCCESS;
}
