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0d5be398 | 1 | /* |
1298001e | 2 | * Copyright (C) 2008-2009 Kay Sievers <kay@vrfy.org> |
0d5be398 | 3 | * |
55e9959b KS |
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. | |
0d5be398 | 8 | * |
55e9959b KS |
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. | |
13 | * | |
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/>. | |
0d5be398 KS |
16 | */ |
17 | ||
18 | #include <stdlib.h> | |
19 | #include <stddef.h> | |
20 | #include <string.h> | |
21 | #include <stdio.h> | |
22 | #include <unistd.h> | |
fc89fe7e | 23 | #include <getopt.h> |
0d5be398 KS |
24 | #include <errno.h> |
25 | #include <dirent.h> | |
26 | #include <fcntl.h> | |
27 | #include <syslog.h> | |
fc89fe7e | 28 | #include <fnmatch.h> |
0d5be398 KS |
29 | #include <sys/stat.h> |
30 | #include <sys/types.h> | |
ab815cae KS |
31 | #include <sys/socket.h> |
32 | #include <sys/un.h> | |
0d5be398 KS |
33 | |
34 | #include "udev.h" | |
35 | ||
c48622cc KS |
36 | static int verbose; |
37 | static int dry_run; | |
c48622cc | 38 | |
f5001d24 | 39 | static void exec_list(struct udev_enumerate *udev_enumerate, const char *action) |
c48622cc | 40 | { |
912541b0 KS |
41 | struct udev_list_entry *entry; |
42 | ||
43 | udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(udev_enumerate)) { | |
44 | char filename[UTIL_PATH_SIZE]; | |
45 | int fd; | |
46 | ||
47 | if (verbose) | |
48 | printf("%s\n", udev_list_entry_get_name(entry)); | |
49 | if (dry_run) | |
50 | continue; | |
d5a89d7d | 51 | strscpyl(filename, sizeof(filename), udev_list_entry_get_name(entry), "/uevent", NULL); |
912541b0 | 52 | fd = open(filename, O_WRONLY); |
baa30fbc | 53 | if (fd < 0) |
912541b0 | 54 | continue; |
912541b0 | 55 | if (write(fd, action, strlen(action)) < 0) |
baa30fbc | 56 | log_debug("error writing '%s' to '%s': %m\n", action, filename); |
912541b0 KS |
57 | close(fd); |
58 | } | |
0d5be398 KS |
59 | } |
60 | ||
80381823 KS |
61 | static const char *keyval(const char *str, const char **val, char *buf, size_t size) |
62 | { | |
912541b0 KS |
63 | char *pos; |
64 | ||
d5a89d7d | 65 | strscpy(buf, size,str); |
912541b0 KS |
66 | pos = strchr(buf, '='); |
67 | if (pos != NULL) { | |
68 | pos[0] = 0; | |
69 | pos++; | |
70 | } | |
71 | *val = pos; | |
72 | return buf; | |
80381823 KS |
73 | } |
74 | ||
1985c76e | 75 | static int adm_trigger(struct udev *udev, int argc, char *argv[]) |
0d5be398 | 76 | { |
912541b0 KS |
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' }, | |
91 | {} | |
92 | }; | |
93 | enum { | |
94 | TYPE_DEVICES, | |
95 | TYPE_SUBSYSTEMS, | |
96 | } device_type = TYPE_DEVICES; | |
97 | const char *action = "change"; | |
98 | struct udev_enumerate *udev_enumerate; | |
99 | int rc = 0; | |
100 | ||
912541b0 KS |
101 | udev_enumerate = udev_enumerate_new(udev); |
102 | if (udev_enumerate == NULL) { | |
103 | rc = 1; | |
104 | goto exit; | |
105 | } | |
106 | ||
107 | for (;;) { | |
108 | int option; | |
109 | const char *key; | |
110 | const char *val; | |
111 | char buf[UTIL_PATH_SIZE]; | |
112 | ||
113 | option = getopt_long(argc, argv, "vng:o:t:hc:p:s:S:a:A:y:b:", options, NULL); | |
114 | if (option == -1) | |
115 | break; | |
116 | ||
117 | switch (option) { | |
118 | case 'v': | |
119 | verbose = 1; | |
120 | break; | |
121 | case 'n': | |
122 | dry_run = 1; | |
123 | break; | |
124 | case 't': | |
125 | if (strcmp(optarg, "devices") == 0) { | |
126 | device_type = TYPE_DEVICES; | |
127 | } else if (strcmp(optarg, "subsystems") == 0) { | |
128 | device_type = TYPE_SUBSYSTEMS; | |
129 | } else { | |
baa30fbc | 130 | log_error("unknown type --type=%s\n", optarg); |
912541b0 KS |
131 | rc = 2; |
132 | goto exit; | |
133 | } | |
134 | break; | |
135 | case 'c': | |
136 | action = optarg; | |
137 | break; | |
138 | case 's': | |
139 | udev_enumerate_add_match_subsystem(udev_enumerate, optarg); | |
140 | break; | |
141 | case 'S': | |
142 | udev_enumerate_add_nomatch_subsystem(udev_enumerate, optarg); | |
143 | break; | |
144 | case 'a': | |
145 | key = keyval(optarg, &val, buf, sizeof(buf)); | |
146 | udev_enumerate_add_match_sysattr(udev_enumerate, key, val); | |
147 | break; | |
148 | case 'A': | |
149 | key = keyval(optarg, &val, buf, sizeof(buf)); | |
150 | udev_enumerate_add_nomatch_sysattr(udev_enumerate, key, val); | |
151 | break; | |
152 | case 'p': | |
153 | key = keyval(optarg, &val, buf, sizeof(buf)); | |
154 | udev_enumerate_add_match_property(udev_enumerate, key, val); | |
155 | break; | |
156 | case 'g': | |
157 | udev_enumerate_add_match_tag(udev_enumerate, optarg); | |
158 | break; | |
159 | case 'y': | |
160 | udev_enumerate_add_match_sysname(udev_enumerate, optarg); | |
161 | break; | |
162 | case 'b': { | |
163 | char path[UTIL_PATH_SIZE]; | |
164 | struct udev_device *dev; | |
165 | ||
166 | /* add sys dir if needed */ | |
33502ffe | 167 | if (!startswith(optarg, "/sys")) |
d5a89d7d | 168 | strscpyl(path, sizeof(path), "/sys", optarg, NULL); |
912541b0 | 169 | else |
d5a89d7d | 170 | strscpy(path, sizeof(path), optarg); |
912541b0 KS |
171 | util_remove_trailing_chars(path, '/'); |
172 | dev = udev_device_new_from_syspath(udev, path); | |
173 | if (dev == NULL) { | |
baa30fbc | 174 | log_error("unable to open the device '%s'\n", optarg); |
912541b0 KS |
175 | rc = 2; |
176 | goto exit; | |
177 | } | |
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); | |
181 | break; | |
182 | } | |
183 | case 'h': | |
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" | |
199 | " --help\n\n"); | |
200 | goto exit; | |
201 | default: | |
202 | rc = 1; | |
203 | goto exit; | |
204 | } | |
205 | } | |
206 | ||
207 | switch (device_type) { | |
208 | case TYPE_SUBSYSTEMS: | |
209 | udev_enumerate_scan_subsystems(udev_enumerate); | |
210 | exec_list(udev_enumerate, action); | |
211 | goto exit; | |
212 | case TYPE_DEVICES: | |
213 | udev_enumerate_scan_devices(udev_enumerate); | |
214 | exec_list(udev_enumerate, action); | |
215 | goto exit; | |
216 | default: | |
217 | goto exit; | |
218 | } | |
0d5be398 | 219 | exit: |
912541b0 KS |
220 | udev_enumerate_unref(udev_enumerate); |
221 | return rc; | |
0d5be398 | 222 | } |
1985c76e KS |
223 | |
224 | const struct udevadm_cmd udevadm_trigger = { | |
912541b0 KS |
225 | .name = "trigger", |
226 | .cmd = adm_trigger, | |
227 | .help = "request events from the kernel", | |
1985c76e | 228 | }; |