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/*
* Copyright (C) 2003-2004 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (C) 2004-2008 Kay Sievers <kay.sievers@vrfy.org>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <ctype.h>
#include <errno.h>
#include <unistd.h>
#include <syslog.h>
#include <grp.h>
#include <sys/signalfd.h>
#include "udev.h"
void udev_main_log(struct udev *udev, int priority,
const char *file, int line, const char *fn,
const char *format, va_list args) {}
int main(int argc, char *argv[])
{
struct udev *udev;
struct udev_event *event = NULL;
struct udev_device *dev = NULL;
struct udev_rules *rules = NULL;
char syspath[UTIL_PATH_SIZE];
const char *devpath;
const char *action;
sigset_t mask, sigmask_orig;
int err = -EINVAL;
udev = udev_new();
if (udev == NULL)
exit(1);
log_debug("version %s\n", VERSION);
udev_selinux_init(udev);
sigprocmask(SIG_SETMASK, NULL, &sigmask_orig);
action = argv[1];
if (action == NULL) {
log_error("action missing\n");
goto out;
}
devpath = argv[2];
if (devpath == NULL) {
log_error("devpath missing\n");
goto out;
}
rules = udev_rules_new(udev, 1);
util_strscpyl(syspath, sizeof(syspath), udev_get_sys_path(udev), devpath, NULL);
dev = udev_device_new_from_syspath(udev, syspath);
if (dev == NULL) {
log_debug("unknown device '%s'\n", devpath);
goto out;
}
udev_device_set_action(dev, action);
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;
if (strcmp(udev_device_get_subsystem(dev), "block") == 0)
mode |= S_IFBLK;
else
mode |= S_IFCHR;
if (strcmp(action, "remove") != 0) {
util_create_path(udev, udev_device_get_devnode(dev));
mknod(udev_device_get_devnode(dev), mode, udev_device_get_devnum(dev));
} else {
unlink(udev_device_get_devnode(dev));
util_delete_path(udev, udev_device_get_devnode(dev));
}
}
err = udev_event_execute_rules(event, rules, &sigmask_orig);
if (err == 0)
udev_event_execute_run(event, NULL);
out:
if (event != NULL && event->fd_signal >= 0)
close(event->fd_signal);
udev_event_unref(event);
udev_device_unref(dev);
udev_rules_unref(rules);
udev_selinux_exit(udev);
udev_unref(udev);
if (err != 0)
return 1;
return 0;
}
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