2 * Copyright (C) 2008-2009 Kay Sievers <kay@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_list_entry
*entry
;
43 udev_list_entry_foreach(entry
, udev_enumerate_get_list_entry(udev_enumerate
)) {
44 char filename
[UTIL_PATH_SIZE
];
48 printf("%s\n", udev_list_entry_get_name(entry
));
51 strscpyl(filename
, sizeof(filename
), udev_list_entry_get_name(entry
), "/uevent", NULL
);
52 fd
= open(filename
, O_WRONLY
);
55 if (write(fd
, action
, strlen(action
)) < 0)
56 log_debug("error writing '%s' to '%s': %m\n", action
, filename
);
61 static const char *keyval(const char *str
, const char **val
, char *buf
, size_t size
)
65 strscpy(buf
, size
,str
);
66 pos
= strchr(buf
, '=');
75 static int adm_trigger(struct udev
*udev
, int argc
, char *argv
[])
77 static const struct option options
[] = {
78 { "verbose", no_argument
, NULL
, 'v' },
79 { "dry-run", no_argument
, NULL
, 'n' },
80 { "type", required_argument
, NULL
, 't' },
81 { "action", required_argument
, NULL
, 'c' },
82 { "subsystem-match", required_argument
, NULL
, 's' },
83 { "subsystem-nomatch", required_argument
, NULL
, 'S' },
84 { "attr-match", required_argument
, NULL
, 'a' },
85 { "attr-nomatch", required_argument
, NULL
, 'A' },
86 { "property-match", required_argument
, NULL
, 'p' },
87 { "tag-match", required_argument
, NULL
, 'g' },
88 { "sysname-match", required_argument
, NULL
, 'y' },
89 { "parent-match", required_argument
, NULL
, 'b' },
90 { "help", no_argument
, NULL
, 'h' },
96 } device_type
= TYPE_DEVICES
;
97 const char *action
= "change";
98 struct udev_enumerate
*udev_enumerate
;
101 udev_enumerate
= udev_enumerate_new(udev
);
102 if (udev_enumerate
== NULL
) {
111 char buf
[UTIL_PATH_SIZE
];
113 option
= getopt_long(argc
, argv
, "vng:o:t:hc:p:s:S:a:A:y:b:", options
, NULL
);
125 if (streq(optarg
, "devices")) {
126 device_type
= TYPE_DEVICES
;
127 } else if (streq(optarg
, "subsystems")) {
128 device_type
= TYPE_SUBSYSTEMS
;
130 log_error("unknown type --type=%s\n", optarg
);
139 udev_enumerate_add_match_subsystem(udev_enumerate
, optarg
);
142 udev_enumerate_add_nomatch_subsystem(udev_enumerate
, optarg
);
145 key
= keyval(optarg
, &val
, buf
, sizeof(buf
));
146 udev_enumerate_add_match_sysattr(udev_enumerate
, key
, val
);
149 key
= keyval(optarg
, &val
, buf
, sizeof(buf
));
150 udev_enumerate_add_nomatch_sysattr(udev_enumerate
, key
, val
);
153 key
= keyval(optarg
, &val
, buf
, sizeof(buf
));
154 udev_enumerate_add_match_property(udev_enumerate
, key
, val
);
157 udev_enumerate_add_match_tag(udev_enumerate
, optarg
);
160 udev_enumerate_add_match_sysname(udev_enumerate
, optarg
);
163 char path
[UTIL_PATH_SIZE
];
164 struct udev_device
*dev
;
166 /* add sys dir if needed */
167 if (!startswith(optarg
, "/sys"))
168 strscpyl(path
, sizeof(path
), "/sys", optarg
, NULL
);
170 strscpy(path
, sizeof(path
), optarg
);
171 util_remove_trailing_chars(path
, '/');
172 dev
= udev_device_new_from_syspath(udev
, path
);
174 log_error("unable to open the device '%s'\n", optarg
);
178 udev_enumerate_add_match_parent(udev_enumerate
, dev
);
179 /* drop reference immediately, enumerate pins the device as long as needed */
180 udev_device_unref(dev
);
184 printf("Usage: udevadm trigger OPTIONS\n"
185 " --verbose print the list of devices while running\n"
186 " --dry-run do not actually trigger the events\n"
187 " --type= type of events to trigger\n"
188 " devices sys devices (default)\n"
189 " subsystems sys subsystems and drivers\n"
190 " --action=<action> event action value, default is \"change\"\n"
191 " --subsystem-match=<subsystem> trigger devices from a matching subsystem\n"
192 " --subsystem-nomatch=<subsystem> exclude devices from a matching subsystem\n"
193 " --attr-match=<file[=<value>]> trigger devices with a matching attribute\n"
194 " --attr-nomatch=<file[=<value>]> exclude devices with a matching attribute\n"
195 " --property-match=<key>=<value> trigger devices with a matching property\n"
196 " --tag-match=<key>=<value> trigger devices with a matching property\n"
197 " --sysname-match=<name> trigger devices with a matching name\n"
198 " --parent-match=<name> trigger devices with that parent device\n"
207 switch (device_type
) {
208 case TYPE_SUBSYSTEMS
:
209 udev_enumerate_scan_subsystems(udev_enumerate
);
210 exec_list(udev_enumerate
, action
);
213 udev_enumerate_scan_devices(udev_enumerate
);
214 exec_list(udev_enumerate
, action
);
217 assert_not_reached("device_type");
220 udev_enumerate_unref(udev_enumerate
);
224 const struct udevadm_cmd udevadm_trigger
= {
227 .help
= "request events from the kernel",