6 * Copyright (C) 2003,2004 Greg Kroah-Hartman <greg@kroah.com>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation version 2 of the License.
12 * This program 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 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 675 Mass Ave, Cambridge, MA 02139, USA.
32 #include "libsysfs/sysfs/libsysfs.h"
35 #include "udev_sysfs.h"
36 #include "udev_version.h"
42 /* global variables */
47 unsigned char logname[LOGNAME_SIZE];
48 void log_message(int level, const char *format, ...)
55 va_start(args, format);
56 vsyslog(level, format, args);
61 static void asmlinkage sig_handler(int signum)
72 int main(int argc, char *argv[], char *envp[])
75 struct sysfs_class_device *class_dev;
77 char path[SYSFS_PATH_MAX];
85 dbg("version %s", UDEV_VERSION);
94 if (strstr(argv[0], "udevstart")) {
97 const char *action = get_action();
98 const char *devpath = get_devpath();
99 const char *subsystem = get_subsystem(main_argv[1]);
105 if (strcmp(action, "add") == 0) {
107 } else if (strcmp(action, "remove") == 0) {
110 dbg("no action '%s' for us", action);
118 dbg("looking at '%s'", devpath);
120 /* we only care about class devices and block stuff */
121 if (!strstr(devpath, "class") && !strstr(devpath, "block")) {
122 dbg("not a block or class device");
131 udev_set_values(&udev, devpath, subsystem);
133 /* skip blacklisted subsystems */
134 if (udev.type != 'n' && subsystem_expect_no_dev(subsystem)) {
135 dbg("don't care about '%s' devices", subsystem);
141 /* set signal handlers */
142 act.sa_handler = (void (*) (int))sig_handler;
143 sigemptyset (&act.sa_mask);
145 /* alarm must not restart syscalls*/
146 sigaction(SIGALRM, &act, NULL);
147 sigaction(SIGINT, &act, NULL);
148 sigaction(SIGTERM, &act, NULL);
150 /* trigger timout to interrupt blocking syscalls */
151 alarm(ALARM_TIMEOUT);
157 retval = udev_start();
162 /* open the device */
163 snprintf(path, SYSFS_PATH_MAX, "%s%s", sysfs_path, udev.devpath);
164 class_dev = sysfs_open_class_device_path(path);
165 if (class_dev == NULL) {
166 dbg ("sysfs_open_class_device_path failed");
169 dbg("opened class_dev->name='%s'", class_dev->name);
174 /* name, create node, store in db */
175 retval = udev_add_device(&udev, class_dev);
178 dev_d_execute(&udev);
180 sysfs_close_class_device(class_dev);
185 /* get node from db, delete it*/
186 retval = udev_remove_device(&udev);
189 dev_d_execute(&udev);