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601185b4 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
1298001e KS |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2008-2012 Kay Sievers <kay@vrfy.org> | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd 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 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
33a5cc29 | 20 | |
33a5cc29 | 21 | #include <stdio.h> |
ba6929f6 | 22 | #include <unistd.h> |
b2d9e4f2 | 23 | #include <getopt.h> |
f2fd4d27 | 24 | #include <sys/epoll.h> |
ba6929f6 | 25 | |
33a5cc29 | 26 | #include "libudev.h" |
1ca208fb | 27 | #include "udev-util.h" |
33502ffe | 28 | #include "util.h" |
33a5cc29 | 29 | |
f2fd4d27 KS |
30 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
31 | ||
f168c273 | 32 | static void print_device(struct udev_device *device) { |
912541b0 KS |
33 | const char *str; |
34 | dev_t devnum; | |
35 | int count; | |
36 | struct udev_list_entry *list_entry; | |
37 | ||
38 | printf("*** device: %p ***\n", device); | |
39 | str = udev_device_get_action(device); | |
40 | if (str != NULL) | |
41 | printf("action: '%s'\n", str); | |
42 | ||
43 | str = udev_device_get_syspath(device); | |
44 | printf("syspath: '%s'\n", str); | |
45 | ||
46 | str = udev_device_get_sysname(device); | |
47 | printf("sysname: '%s'\n", str); | |
48 | ||
49 | str = udev_device_get_sysnum(device); | |
50 | if (str != NULL) | |
51 | printf("sysnum: '%s'\n", str); | |
52 | ||
53 | str = udev_device_get_devpath(device); | |
54 | printf("devpath: '%s'\n", str); | |
55 | ||
56 | str = udev_device_get_subsystem(device); | |
57 | if (str != NULL) | |
58 | printf("subsystem: '%s'\n", str); | |
59 | ||
60 | str = udev_device_get_devtype(device); | |
61 | if (str != NULL) | |
62 | printf("devtype: '%s'\n", str); | |
63 | ||
64 | str = udev_device_get_driver(device); | |
65 | if (str != NULL) | |
66 | printf("driver: '%s'\n", str); | |
67 | ||
68 | str = udev_device_get_devnode(device); | |
69 | if (str != NULL) | |
70 | printf("devname: '%s'\n", str); | |
71 | ||
72 | devnum = udev_device_get_devnum(device); | |
73 | if (major(devnum) > 0) | |
74 | printf("devnum: %u:%u\n", major(devnum), minor(devnum)); | |
75 | ||
76 | count = 0; | |
77 | udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) { | |
78 | printf("link: '%s'\n", udev_list_entry_get_name(list_entry)); | |
79 | count++; | |
80 | } | |
81 | if (count > 0) | |
82 | printf("found %i links\n", count); | |
83 | ||
84 | count = 0; | |
85 | udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) { | |
86 | printf("property: '%s=%s'\n", | |
87 | udev_list_entry_get_name(list_entry), | |
88 | udev_list_entry_get_value(list_entry)); | |
89 | count++; | |
90 | } | |
91 | if (count > 0) | |
92 | printf("found %i properties\n", count); | |
93 | ||
94 | str = udev_device_get_property_value(device, "MAJOR"); | |
95 | if (str != NULL) | |
96 | printf("MAJOR: '%s'\n", str); | |
97 | ||
98 | str = udev_device_get_sysattr_value(device, "dev"); | |
99 | if (str != NULL) | |
100 | printf("attr{dev}: '%s'\n", str); | |
101 | ||
102 | printf("\n"); | |
ba6929f6 KS |
103 | } |
104 | ||
f168c273 | 105 | static int test_device(struct udev *udev, const char *syspath) { |
1ca208fb | 106 | _cleanup_udev_device_unref_ struct udev_device *device; |
912541b0 KS |
107 | |
108 | printf("looking at device: %s\n", syspath); | |
109 | device = udev_device_new_from_syspath(udev, syspath); | |
110 | if (device == NULL) { | |
111 | printf("no device found\n"); | |
112 | return -1; | |
113 | } | |
114 | print_device(device); | |
1ca208fb | 115 | |
912541b0 | 116 | return 0; |
33a5cc29 KS |
117 | } |
118 | ||
f168c273 | 119 | static int test_device_parents(struct udev *udev, const char *syspath) { |
1ca208fb | 120 | _cleanup_udev_device_unref_ struct udev_device *device; |
912541b0 KS |
121 | struct udev_device *device_parent; |
122 | ||
123 | printf("looking at device: %s\n", syspath); | |
124 | device = udev_device_new_from_syspath(udev, syspath); | |
125 | if (device == NULL) | |
126 | return -1; | |
127 | ||
128 | printf("looking at parents\n"); | |
129 | device_parent = device; | |
130 | do { | |
131 | print_device(device_parent); | |
132 | device_parent = udev_device_get_parent(device_parent); | |
133 | } while (device_parent != NULL); | |
134 | ||
135 | printf("looking at parents again\n"); | |
136 | device_parent = device; | |
137 | do { | |
138 | print_device(device_parent); | |
139 | device_parent = udev_device_get_parent(device_parent); | |
140 | } while (device_parent != NULL); | |
912541b0 KS |
141 | |
142 | return 0; | |
4ad3a37f KS |
143 | } |
144 | ||
f168c273 | 145 | static int test_device_devnum(struct udev *udev) { |
912541b0 KS |
146 | dev_t devnum = makedev(1, 3); |
147 | struct udev_device *device; | |
148 | ||
149 | printf("looking up device: %u:%u\n", major(devnum), minor(devnum)); | |
150 | device = udev_device_new_from_devnum(udev, 'c', devnum); | |
151 | if (device == NULL) | |
152 | return -1; | |
153 | print_device(device); | |
154 | udev_device_unref(device); | |
155 | return 0; | |
4c9dff47 KS |
156 | } |
157 | ||
f168c273 | 158 | static int test_device_subsys_name(struct udev *udev) { |
912541b0 KS |
159 | struct udev_device *device; |
160 | ||
161 | printf("looking up device: 'block':'sda'\n"); | |
162 | device = udev_device_new_from_subsystem_sysname(udev, "block", "sda"); | |
163 | if (device == NULL) | |
164 | return -1; | |
165 | print_device(device); | |
166 | udev_device_unref(device); | |
167 | ||
168 | printf("looking up device: 'subsystem':'pci'\n"); | |
169 | device = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci"); | |
170 | if (device == NULL) | |
171 | return -1; | |
172 | print_device(device); | |
173 | udev_device_unref(device); | |
174 | ||
175 | printf("looking up device: 'drivers':'scsi:sd'\n"); | |
176 | device = udev_device_new_from_subsystem_sysname(udev, "drivers", "scsi:sd"); | |
177 | if (device == NULL) | |
178 | return -1; | |
179 | print_device(device); | |
180 | udev_device_unref(device); | |
181 | ||
182 | printf("looking up device: 'module':'printk'\n"); | |
183 | device = udev_device_new_from_subsystem_sysname(udev, "module", "printk"); | |
184 | if (device == NULL) | |
185 | return -1; | |
186 | print_device(device); | |
187 | udev_device_unref(device); | |
188 | return 0; | |
90d80c2e KS |
189 | } |
190 | ||
f168c273 | 191 | static int test_enumerate_print_list(struct udev_enumerate *enumerate) { |
912541b0 KS |
192 | struct udev_list_entry *list_entry; |
193 | int count = 0; | |
194 | ||
195 | udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) { | |
196 | struct udev_device *device; | |
197 | ||
198 | device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate), | |
199 | udev_list_entry_get_name(list_entry)); | |
200 | if (device != NULL) { | |
201 | printf("device: '%s' (%s)\n", | |
202 | udev_device_get_syspath(device), | |
203 | udev_device_get_subsystem(device)); | |
204 | udev_device_unref(device); | |
205 | count++; | |
206 | } | |
207 | } | |
208 | printf("found %i devices\n\n", count); | |
209 | return count; | |
ba6929f6 KS |
210 | } |
211 | ||
f168c273 | 212 | static int test_monitor(struct udev *udev) { |
912541b0 KS |
213 | struct udev_monitor *udev_monitor = NULL; |
214 | int fd_ep; | |
215 | int fd_udev = -1; | |
216 | struct epoll_event ep_udev, ep_stdin; | |
217 | ||
218 | fd_ep = epoll_create1(EPOLL_CLOEXEC); | |
219 | if (fd_ep < 0) { | |
220 | printf("error creating epoll fd: %m\n"); | |
221 | goto out; | |
222 | } | |
223 | ||
224 | udev_monitor = udev_monitor_new_from_netlink(udev, "udev"); | |
225 | if (udev_monitor == NULL) { | |
226 | printf("no socket\n"); | |
227 | goto out; | |
228 | } | |
229 | fd_udev = udev_monitor_get_fd(udev_monitor); | |
230 | ||
231 | if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) < 0 || | |
232 | udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) < 0 || | |
233 | udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") < 0) { | |
234 | printf("filter failed\n"); | |
235 | goto out; | |
236 | } | |
237 | ||
238 | if (udev_monitor_enable_receiving(udev_monitor) < 0) { | |
239 | printf("bind failed\n"); | |
240 | goto out; | |
241 | } | |
242 | ||
29804cc1 | 243 | memzero(&ep_udev, sizeof(struct epoll_event)); |
912541b0 KS |
244 | ep_udev.events = EPOLLIN; |
245 | ep_udev.data.fd = fd_udev; | |
246 | if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) < 0) { | |
247 | printf("fail to add fd to epoll: %m\n"); | |
248 | goto out; | |
249 | } | |
250 | ||
29804cc1 | 251 | memzero(&ep_stdin, sizeof(struct epoll_event)); |
912541b0 KS |
252 | ep_stdin.events = EPOLLIN; |
253 | ep_stdin.data.fd = STDIN_FILENO; | |
254 | if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) < 0) { | |
255 | printf("fail to add fd to epoll: %m\n"); | |
256 | goto out; | |
257 | } | |
258 | ||
259 | for (;;) { | |
260 | int fdcount; | |
261 | struct epoll_event ev[4]; | |
262 | struct udev_device *device; | |
263 | int i; | |
264 | ||
265 | printf("waiting for events from udev, press ENTER to exit\n"); | |
266 | fdcount = epoll_wait(fd_ep, ev, ARRAY_SIZE(ev), -1); | |
267 | printf("epoll fd count: %i\n", fdcount); | |
268 | ||
269 | for (i = 0; i < fdcount; i++) { | |
270 | if (ev[i].data.fd == fd_udev && ev[i].events & EPOLLIN) { | |
271 | device = udev_monitor_receive_device(udev_monitor); | |
272 | if (device == NULL) { | |
273 | printf("no device from socket\n"); | |
274 | continue; | |
275 | } | |
276 | print_device(device); | |
277 | udev_device_unref(device); | |
278 | } else if (ev[i].data.fd == STDIN_FILENO && ev[i].events & EPOLLIN) { | |
279 | printf("exiting loop\n"); | |
280 | goto out; | |
281 | } | |
282 | } | |
283 | } | |
f2fd4d27 | 284 | out: |
912541b0 KS |
285 | if (fd_ep >= 0) |
286 | close(fd_ep); | |
287 | udev_monitor_unref(udev_monitor); | |
288 | return 0; | |
33a5cc29 KS |
289 | } |
290 | ||
f168c273 | 291 | static int test_queue(struct udev *udev) { |
912541b0 | 292 | struct udev_queue *udev_queue; |
912541b0 KS |
293 | |
294 | udev_queue = udev_queue_new(udev); | |
295 | if (udev_queue == NULL) | |
296 | return -1; | |
912541b0 KS |
297 | |
298 | if (udev_queue_get_queue_is_empty(udev_queue)) | |
299 | printf("queue is empty\n"); | |
912541b0 | 300 | |
912541b0 KS |
301 | udev_queue_unref(udev_queue); |
302 | return 0; | |
64ccdf82 KS |
303 | } |
304 | ||
f168c273 | 305 | static int test_enumerate(struct udev *udev, const char *subsystem) { |
912541b0 KS |
306 | struct udev_enumerate *udev_enumerate; |
307 | ||
308 | printf("enumerate '%s'\n", subsystem == NULL ? "<all>" : subsystem); | |
309 | udev_enumerate = udev_enumerate_new(udev); | |
310 | if (udev_enumerate == NULL) | |
311 | return -1; | |
312 | udev_enumerate_add_match_subsystem(udev_enumerate, subsystem); | |
313 | udev_enumerate_scan_devices(udev_enumerate); | |
314 | test_enumerate_print_list(udev_enumerate); | |
315 | udev_enumerate_unref(udev_enumerate); | |
316 | ||
317 | printf("enumerate 'net' + duplicated scan + null + zero\n"); | |
318 | udev_enumerate = udev_enumerate_new(udev); | |
319 | if (udev_enumerate == NULL) | |
320 | return -1; | |
321 | udev_enumerate_add_match_subsystem(udev_enumerate, "net"); | |
322 | udev_enumerate_scan_devices(udev_enumerate); | |
323 | udev_enumerate_scan_devices(udev_enumerate); | |
324 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); | |
325 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); | |
326 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); | |
327 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); | |
328 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); | |
329 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); | |
330 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null"); | |
331 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); | |
332 | udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero"); | |
333 | udev_enumerate_scan_devices(udev_enumerate); | |
334 | test_enumerate_print_list(udev_enumerate); | |
335 | udev_enumerate_unref(udev_enumerate); | |
336 | ||
337 | printf("enumerate 'block'\n"); | |
338 | udev_enumerate = udev_enumerate_new(udev); | |
339 | if (udev_enumerate == NULL) | |
340 | return -1; | |
341 | udev_enumerate_add_match_subsystem(udev_enumerate,"block"); | |
342 | udev_enumerate_add_match_is_initialized(udev_enumerate); | |
343 | udev_enumerate_scan_devices(udev_enumerate); | |
344 | test_enumerate_print_list(udev_enumerate); | |
345 | udev_enumerate_unref(udev_enumerate); | |
346 | ||
347 | printf("enumerate 'not block'\n"); | |
348 | udev_enumerate = udev_enumerate_new(udev); | |
349 | if (udev_enumerate == NULL) | |
350 | return -1; | |
351 | udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block"); | |
352 | udev_enumerate_scan_devices(udev_enumerate); | |
353 | test_enumerate_print_list(udev_enumerate); | |
354 | udev_enumerate_unref(udev_enumerate); | |
355 | ||
356 | printf("enumerate 'pci, mem, vc'\n"); | |
357 | udev_enumerate = udev_enumerate_new(udev); | |
358 | if (udev_enumerate == NULL) | |
359 | return -1; | |
360 | udev_enumerate_add_match_subsystem(udev_enumerate, "pci"); | |
361 | udev_enumerate_add_match_subsystem(udev_enumerate, "mem"); | |
362 | udev_enumerate_add_match_subsystem(udev_enumerate, "vc"); | |
363 | udev_enumerate_scan_devices(udev_enumerate); | |
364 | test_enumerate_print_list(udev_enumerate); | |
365 | udev_enumerate_unref(udev_enumerate); | |
366 | ||
367 | printf("enumerate 'subsystem'\n"); | |
368 | udev_enumerate = udev_enumerate_new(udev); | |
369 | if (udev_enumerate == NULL) | |
370 | return -1; | |
371 | udev_enumerate_scan_subsystems(udev_enumerate); | |
372 | test_enumerate_print_list(udev_enumerate); | |
373 | udev_enumerate_unref(udev_enumerate); | |
374 | ||
375 | printf("enumerate 'property IF_FS_*=filesystem'\n"); | |
376 | udev_enumerate = udev_enumerate_new(udev); | |
377 | if (udev_enumerate == NULL) | |
378 | return -1; | |
379 | udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem"); | |
380 | udev_enumerate_scan_devices(udev_enumerate); | |
381 | test_enumerate_print_list(udev_enumerate); | |
382 | udev_enumerate_unref(udev_enumerate); | |
383 | return 0; | |
90d80c2e KS |
384 | } |
385 | ||
872c8faa | 386 | static void test_hwdb(struct udev *udev, const char *modalias) { |
960787ae | 387 | struct udev_hwdb *hwdb; |
2001208c KS |
388 | struct udev_list_entry *entry; |
389 | ||
390 | hwdb = udev_hwdb_new(udev); | |
391 | ||
392 | udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, modalias, 0)) | |
393 | printf("'%s'='%s'\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry)); | |
394 | printf("\n"); | |
395 | ||
396 | hwdb = udev_hwdb_unref(hwdb); | |
bdf7026e | 397 | assert_se(hwdb == NULL); |
2001208c KS |
398 | } |
399 | ||
f168c273 | 400 | int main(int argc, char *argv[]) { |
912541b0 KS |
401 | struct udev *udev = NULL; |
402 | static const struct option options[] = { | |
403 | { "syspath", required_argument, NULL, 'p' }, | |
404 | { "subsystem", required_argument, NULL, 's' }, | |
405 | { "debug", no_argument, NULL, 'd' }, | |
406 | { "help", no_argument, NULL, 'h' }, | |
407 | { "version", no_argument, NULL, 'V' }, | |
408 | {} | |
409 | }; | |
410 | const char *syspath = "/devices/virtual/mem/null"; | |
411 | const char *subsystem = NULL; | |
412 | char path[1024]; | |
601185b4 | 413 | int c; |
912541b0 KS |
414 | |
415 | udev = udev_new(); | |
416 | printf("context: %p\n", udev); | |
417 | if (udev == NULL) { | |
418 | printf("no context\n"); | |
419 | return 1; | |
420 | } | |
912541b0 | 421 | |
601185b4 ZJS |
422 | while ((c = getopt_long(argc, argv, "p:s:dhV", options, NULL)) >= 0) |
423 | switch (c) { | |
912541b0 | 424 | |
912541b0 KS |
425 | case 'p': |
426 | syspath = optarg; | |
427 | break; | |
601185b4 | 428 | |
912541b0 KS |
429 | case 's': |
430 | subsystem = optarg; | |
431 | break; | |
601185b4 | 432 | |
912541b0 | 433 | case 'd': |
25e773ee KS |
434 | if (log_get_max_level() < LOG_INFO) |
435 | log_set_max_level(LOG_INFO); | |
912541b0 | 436 | break; |
601185b4 | 437 | |
912541b0 KS |
438 | case 'h': |
439 | printf("--debug --syspath= --subsystem= --help\n"); | |
440 | goto out; | |
601185b4 | 441 | |
912541b0 KS |
442 | case 'V': |
443 | printf("%s\n", VERSION); | |
444 | goto out; | |
601185b4 ZJS |
445 | |
446 | case '?': | |
912541b0 | 447 | goto out; |
601185b4 ZJS |
448 | |
449 | default: | |
450 | assert_not_reached("Unhandled option code."); | |
912541b0 | 451 | } |
601185b4 | 452 | |
912541b0 | 453 | |
912541b0 | 454 | /* add sys path if needed */ |
33502ffe | 455 | if (!startswith(syspath, "/sys")) { |
6ada823a | 456 | snprintf(path, sizeof(path), "/sys/%s", syspath); |
912541b0 KS |
457 | syspath = path; |
458 | } | |
459 | ||
460 | test_device(udev, syspath); | |
461 | test_device_devnum(udev); | |
462 | test_device_subsys_name(udev); | |
463 | test_device_parents(udev, syspath); | |
464 | ||
465 | test_enumerate(udev, subsystem); | |
466 | ||
467 | test_queue(udev); | |
468 | ||
2001208c KS |
469 | test_hwdb(udev, "usb:v0D50p0011*"); |
470 | ||
912541b0 | 471 | test_monitor(udev); |
b2d9e4f2 | 472 | out: |
912541b0 KS |
473 | udev_unref(udev); |
474 | return 0; | |
33a5cc29 | 475 | } |