2 * Copyright (C) 2008-2009 Kay Sievers <kay.sievers@vrfy.org>
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 #include <sys/types.h>
31 #include <sys/socket.h>
39 static void exec_list(struct udev_enumerate *udev_enumerate, const char *action)
41 struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
42 struct udev_list_entry *entry;
44 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(udev_enumerate)) {
45 char filename[UTIL_PATH_SIZE];
49 printf("%s\n", udev_list_entry_get_name(entry));
52 util_strscpyl(filename, sizeof(filename), udev_list_entry_get_name(entry), "/uevent", NULL);
53 fd = open(filename, O_WRONLY);
55 dbg(udev, "error on opening %s: %m\n", filename);
58 if (write(fd, action, strlen(action)) < 0)
59 info(udev, "error writing '%s' to '%s': %m\n", action, filename);
64 static int scan_failed(struct udev_enumerate *udev_enumerate)
66 struct udev *udev = udev_enumerate_get_udev(udev_enumerate);
67 struct udev_queue *udev_queue;
68 struct udev_list_entry *list_entry;
70 udev_queue = udev_queue_new(udev);
71 if (udev_queue == NULL)
73 udev_list_entry_foreach(list_entry, udev_queue_get_failed_list_entry(udev_queue))
74 udev_enumerate_add_syspath(udev_enumerate, udev_list_entry_get_name(list_entry));
78 static const char *keyval(const char *str, const char **val, char *buf, size_t size)
82 util_strscpy(buf, size,str);
83 pos = strchr(buf, '=');
92 static int adm_trigger(struct udev *udev, int argc, char *argv[])
94 static const struct option options[] = {
95 { "verbose", no_argument, NULL, 'v' },
96 { "dry-run", no_argument, NULL, 'n' },
97 { "type", required_argument, NULL, 't' },
98 { "action", required_argument, NULL, 'c' },
99 { "subsystem-match", required_argument, NULL, 's' },
100 { "subsystem-nomatch", required_argument, NULL, 'S' },
101 { "attr-match", required_argument, NULL, 'a' },
102 { "attr-nomatch", required_argument, NULL, 'A' },
103 { "property-match", required_argument, NULL, 'p' },
104 { "tag-match", required_argument, NULL, 'g' },
105 { "sysname-match", required_argument, NULL, 'y' },
106 { "parent-match", required_argument, NULL, 'b' },
107 { "help", no_argument, NULL, 'h' },
114 } device_type = TYPE_DEVICES;
115 const char *action = "change";
116 struct udev_enumerate *udev_enumerate;
119 dbg(udev, "version %s\n", VERSION);
120 udev_enumerate = udev_enumerate_new(udev);
121 if (udev_enumerate == NULL) {
130 char buf[UTIL_PATH_SIZE];
132 option = getopt_long(argc, argv, "vng:o:t:hc:p:s:S:a:A:y:b:", options, NULL);
144 if (strcmp(optarg, "devices") == 0) {
145 device_type = TYPE_DEVICES;
146 } else if (strcmp(optarg, "subsystems") == 0) {
147 device_type = TYPE_SUBSYSTEMS;
148 } else if (strcmp(optarg, "failed") == 0) {
149 device_type = TYPE_FAILED;
151 err(udev, "unknown type --type=%s\n", optarg);
160 udev_enumerate_add_match_subsystem(udev_enumerate, optarg);
163 udev_enumerate_add_nomatch_subsystem(udev_enumerate, optarg);
166 key = keyval(optarg, &val, buf, sizeof(buf));
167 udev_enumerate_add_match_sysattr(udev_enumerate, key, val);
170 key = keyval(optarg, &val, buf, sizeof(buf));
171 udev_enumerate_add_nomatch_sysattr(udev_enumerate, key, val);
174 key = keyval(optarg, &val, buf, sizeof(buf));
175 udev_enumerate_add_match_property(udev_enumerate, key, val);
178 udev_enumerate_add_match_tag(udev_enumerate, optarg);
181 udev_enumerate_add_match_sysname(udev_enumerate, optarg);
184 char path[UTIL_PATH_SIZE];
185 struct udev_device *dev;
187 /* add sys dir if needed */
188 if (strncmp(optarg, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0)
189 util_strscpyl(path, sizeof(path), udev_get_sys_path(udev), optarg, NULL);
191 util_strscpy(path, sizeof(path), optarg);
192 util_remove_trailing_chars(path, '/');
193 dev = udev_device_new_from_syspath(udev, path);
195 err(udev, "unable to open the device '%s'\n", optarg);
199 udev_enumerate_add_match_parent(udev_enumerate, dev);
200 /* drop reference immediately, enumerate pins the device as long as needed */
201 udev_device_unref(dev);
205 printf("Usage: udevadm trigger OPTIONS\n"
206 " --verbose print the list of devices while running\n"
207 " --dry-run do not actually trigger the events\n"
208 " --type= type of events to trigger\n"
209 " devices sys devices (default)\n"
210 " subsystems sys subsystems and drivers\n"
211 " failed trigger only the events which have been\n"
212 " marked as failed during a previous run\n"
213 " --action=<action> event action value, default is \"change\"\n"
214 " --subsystem-match=<subsystem> trigger devices from a matching subsystem\n"
215 " --subsystem-nomatch=<subsystem> exclude devices from a matching subsystem\n"
216 " --attr-match=<file[=<value>]> trigger devices with a matching attribute\n"
217 " --attr-nomatch=<file[=<value>]> exclude devices with a matching attribute\n"
218 " --property-match=<key>=<value> trigger devices with a matching property\n"
219 " --tag-match=<key>=<value> trigger devices with a matching property\n"
220 " --sysname-match=<name> trigger devices with a matching name\n"
221 " --parent-match=<name> trigger devices with that parent device\n"
230 switch (device_type) {
232 err(udev, "--type=failed is deprecated and will be removed from a future udev release.\n");
233 scan_failed(udev_enumerate);
234 exec_list(udev_enumerate, action);
236 case TYPE_SUBSYSTEMS:
237 udev_enumerate_scan_subsystems(udev_enumerate);
238 exec_list(udev_enumerate, action);
241 udev_enumerate_scan_devices(udev_enumerate);
242 exec_list(udev_enumerate, action);
248 udev_enumerate_unref(udev_enumerate);
252 const struct udevadm_cmd udevadm_trigger = {
255 .help = "request events from the kernel",