4 * Copyright (C) 2008 Kay Sievers <kay.sievers@vrfy.org>
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
21 #include <sys/epoll.h>
26 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
28 static void log_fn(struct udev *udev,
29 int priority, const char *file, int line, const char *fn,
30 const char *format, va_list args)
32 printf("test-libudev: %s %s:%d ", fn, file, line);
33 vprintf(format, args);
36 static void print_device(struct udev_device *device)
41 struct udev_list_entry *list_entry;
43 printf("*** device: %p ***\n", device);
44 str = udev_device_get_action(device);
46 printf("action: '%s'\n", str);
48 str = udev_device_get_syspath(device);
49 printf("syspath: '%s'\n", str);
51 str = udev_device_get_sysname(device);
52 printf("sysname: '%s'\n", str);
54 str = udev_device_get_sysnum(device);
56 printf("sysnum: '%s'\n", str);
58 str = udev_device_get_devpath(device);
59 printf("devpath: '%s'\n", str);
61 str = udev_device_get_subsystem(device);
63 printf("subsystem: '%s'\n", str);
65 str = udev_device_get_devtype(device);
67 printf("devtype: '%s'\n", str);
69 str = udev_device_get_driver(device);
71 printf("driver: '%s'\n", str);
73 str = udev_device_get_devnode(device);
75 printf("devname: '%s'\n", str);
77 devnum = udev_device_get_devnum(device);
78 if (major(devnum) > 0)
79 printf("devnum: %u:%u\n", major(devnum), minor(devnum));
82 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) {
83 printf("link: '%s'\n", udev_list_entry_get_name(list_entry));
87 printf("found %i links\n", count);
90 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) {
91 printf("property: '%s=%s'\n",
92 udev_list_entry_get_name(list_entry),
93 udev_list_entry_get_value(list_entry));
97 printf("found %i properties\n", count);
99 str = udev_device_get_property_value(device, "MAJOR");
101 printf("MAJOR: '%s'\n", str);
103 str = udev_device_get_sysattr_value(device, "dev");
105 printf("attr{dev}: '%s'\n", str);
110 static int test_device(struct udev *udev, const char *syspath)
112 struct udev_device *device;
114 printf("looking at device: %s\n", syspath);
115 device = udev_device_new_from_syspath(udev, syspath);
116 if (device == NULL) {
117 printf("no device found\n");
120 print_device(device);
121 udev_device_unref(device);
125 static int test_device_parents(struct udev *udev, const char *syspath)
127 struct udev_device *device;
128 struct udev_device *device_parent;
130 printf("looking at device: %s\n", syspath);
131 device = udev_device_new_from_syspath(udev, syspath);
135 printf("looking at parents\n");
136 device_parent = device;
138 print_device(device_parent);
139 device_parent = udev_device_get_parent(device_parent);
140 } while (device_parent != NULL);
142 printf("looking at parents again\n");
143 device_parent = device;
145 print_device(device_parent);
146 device_parent = udev_device_get_parent(device_parent);
147 } while (device_parent != NULL);
148 udev_device_unref(device);
153 static int test_device_devnum(struct udev *udev)
155 dev_t devnum = makedev(1, 3);
156 struct udev_device *device;
158 printf("looking up device: %u:%u\n", major(devnum), minor(devnum));
159 device = udev_device_new_from_devnum(udev, 'c', devnum);
162 print_device(device);
163 udev_device_unref(device);
167 static int test_device_subsys_name(struct udev *udev)
169 struct udev_device *device;
171 printf("looking up device: 'block':'sda'\n");
172 device = udev_device_new_from_subsystem_sysname(udev, "block", "sda");
175 print_device(device);
176 udev_device_unref(device);
178 printf("looking up device: 'subsystem':'pci'\n");
179 device = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci");
182 print_device(device);
183 udev_device_unref(device);
185 printf("looking up device: 'drivers':'scsi:sd'\n");
186 device = udev_device_new_from_subsystem_sysname(udev, "drivers", "scsi:sd");
189 print_device(device);
190 udev_device_unref(device);
192 printf("looking up device: 'module':'printk'\n");
193 device = udev_device_new_from_subsystem_sysname(udev, "module", "printk");
196 print_device(device);
197 udev_device_unref(device);
201 static int test_enumerate_print_list(struct udev_enumerate *enumerate)
203 struct udev_list_entry *list_entry;
206 udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
207 struct udev_device *device;
209 device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
210 udev_list_entry_get_name(list_entry));
211 if (device != NULL) {
212 printf("device: '%s' (%s)\n",
213 udev_device_get_syspath(device),
214 udev_device_get_subsystem(device));
215 udev_device_unref(device);
219 printf("found %i devices\n\n", count);
223 static int test_monitor(struct udev *udev)
225 struct udev_monitor *udev_monitor = NULL;
228 struct epoll_event ep_udev, ep_stdin;
230 fd_ep = epoll_create1(EPOLL_CLOEXEC);
232 printf("error creating epoll fd: %m\n");
236 udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
237 if (udev_monitor == NULL) {
238 printf("no socket\n");
241 fd_udev = udev_monitor_get_fd(udev_monitor);
243 if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) < 0 ||
244 udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) < 0 ||
245 udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") < 0) {
246 printf("filter failed\n");
250 if (udev_monitor_enable_receiving(udev_monitor) < 0) {
251 printf("bind failed\n");
255 memset(&ep_udev, 0, sizeof(struct epoll_event));
256 ep_udev.events = EPOLLIN;
257 ep_udev.data.fd = fd_udev;
258 if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) < 0) {
259 printf("fail to add fd to epoll: %m\n");
263 memset(&ep_stdin, 0, sizeof(struct epoll_event));
264 ep_stdin.events = EPOLLIN;
265 ep_stdin.data.fd = STDIN_FILENO;
266 if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) < 0) {
267 printf("fail to add fd to epoll: %m\n");
273 struct epoll_event ev[4];
274 struct udev_device *device;
277 printf("waiting for events from udev, press ENTER to exit\n");
278 fdcount = epoll_wait(fd_ep, ev, ARRAY_SIZE(ev), -1);
279 printf("epoll fd count: %i\n", fdcount);
281 for (i = 0; i < fdcount; i++) {
282 if (ev[i].data.fd == fd_udev && ev[i].events & EPOLLIN) {
283 device = udev_monitor_receive_device(udev_monitor);
284 if (device == NULL) {
285 printf("no device from socket\n");
288 print_device(device);
289 udev_device_unref(device);
290 } else if (ev[i].data.fd == STDIN_FILENO && ev[i].events & EPOLLIN) {
291 printf("exiting loop\n");
299 udev_monitor_unref(udev_monitor);
303 static int test_queue(struct udev *udev)
305 struct udev_queue *udev_queue;
306 unsigned long long int seqnum;
307 struct udev_list_entry *list_entry;
309 udev_queue = udev_queue_new(udev);
310 if (udev_queue == NULL)
312 seqnum = udev_queue_get_kernel_seqnum(udev_queue);
313 printf("seqnum kernel: %llu\n", seqnum);
314 seqnum = udev_queue_get_udev_seqnum(udev_queue);
315 printf("seqnum udev : %llu\n", seqnum);
317 if (udev_queue_get_queue_is_empty(udev_queue))
318 printf("queue is empty\n");
319 printf("get queue list\n");
320 udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
321 printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
323 printf("get queue list again\n");
324 udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
325 printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
328 list_entry = udev_queue_get_queued_list_entry(udev_queue);
329 if (list_entry != NULL) {
330 printf("event [%llu] is queued\n", seqnum);
331 seqnum = strtoull(udev_list_entry_get_value(list_entry), NULL, 10);
332 if (udev_queue_get_seqnum_is_finished(udev_queue, seqnum))
333 printf("event [%llu] is not finished\n", seqnum);
335 printf("event [%llu] is finished\n", seqnum);
338 udev_queue_unref(udev_queue);
342 static int test_enumerate(struct udev *udev, const char *subsystem)
344 struct udev_enumerate *udev_enumerate;
346 printf("enumerate '%s'\n", subsystem == NULL ? "<all>" : subsystem);
347 udev_enumerate = udev_enumerate_new(udev);
348 if (udev_enumerate == NULL)
350 udev_enumerate_add_match_subsystem(udev_enumerate, subsystem);
351 udev_enumerate_scan_devices(udev_enumerate);
352 test_enumerate_print_list(udev_enumerate);
353 udev_enumerate_unref(udev_enumerate);
355 printf("enumerate 'net' + duplicated scan + null + zero\n");
356 udev_enumerate = udev_enumerate_new(udev);
357 if (udev_enumerate == NULL)
359 udev_enumerate_add_match_subsystem(udev_enumerate, "net");
360 udev_enumerate_scan_devices(udev_enumerate);
361 udev_enumerate_scan_devices(udev_enumerate);
362 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
363 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
364 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
365 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
366 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
367 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
368 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
369 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
370 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
371 udev_enumerate_scan_devices(udev_enumerate);
372 test_enumerate_print_list(udev_enumerate);
373 udev_enumerate_unref(udev_enumerate);
375 printf("enumerate 'block'\n");
376 udev_enumerate = udev_enumerate_new(udev);
377 if (udev_enumerate == NULL)
379 udev_enumerate_add_match_subsystem(udev_enumerate,"block");
380 udev_enumerate_add_match_is_initialized(udev_enumerate);
381 udev_enumerate_scan_devices(udev_enumerate);
382 test_enumerate_print_list(udev_enumerate);
383 udev_enumerate_unref(udev_enumerate);
385 printf("enumerate 'not block'\n");
386 udev_enumerate = udev_enumerate_new(udev);
387 if (udev_enumerate == NULL)
389 udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block");
390 udev_enumerate_scan_devices(udev_enumerate);
391 test_enumerate_print_list(udev_enumerate);
392 udev_enumerate_unref(udev_enumerate);
394 printf("enumerate 'pci, mem, vc'\n");
395 udev_enumerate = udev_enumerate_new(udev);
396 if (udev_enumerate == NULL)
398 udev_enumerate_add_match_subsystem(udev_enumerate, "pci");
399 udev_enumerate_add_match_subsystem(udev_enumerate, "mem");
400 udev_enumerate_add_match_subsystem(udev_enumerate, "vc");
401 udev_enumerate_scan_devices(udev_enumerate);
402 test_enumerate_print_list(udev_enumerate);
403 udev_enumerate_unref(udev_enumerate);
405 printf("enumerate 'subsystem'\n");
406 udev_enumerate = udev_enumerate_new(udev);
407 if (udev_enumerate == NULL)
409 udev_enumerate_scan_subsystems(udev_enumerate);
410 test_enumerate_print_list(udev_enumerate);
411 udev_enumerate_unref(udev_enumerate);
413 printf("enumerate 'property IF_FS_*=filesystem'\n");
414 udev_enumerate = udev_enumerate_new(udev);
415 if (udev_enumerate == NULL)
417 udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem");
418 udev_enumerate_scan_devices(udev_enumerate);
419 test_enumerate_print_list(udev_enumerate);
420 udev_enumerate_unref(udev_enumerate);
424 int main(int argc, char *argv[])
426 struct udev *udev = NULL;
427 static const struct option options[] = {
428 { "syspath", required_argument, NULL, 'p' },
429 { "subsystem", required_argument, NULL, 's' },
430 { "debug", no_argument, NULL, 'd' },
431 { "help", no_argument, NULL, 'h' },
432 { "version", no_argument, NULL, 'V' },
435 const char *syspath = "/devices/virtual/mem/null";
436 const char *subsystem = NULL;
440 printf("context: %p\n", udev);
442 printf("no context\n");
445 udev_set_log_fn(udev, log_fn);
446 printf("set log: %p\n", log_fn);
451 option = getopt_long(argc, argv, "+p:s:dhV", options, NULL);
463 if (udev_get_log_priority(udev) < LOG_INFO)
464 udev_set_log_priority(udev, LOG_INFO);
467 printf("--debug --syspath= --subsystem= --help\n");
470 printf("%s\n", VERSION);
477 /* add sys path if needed */
478 if (!startswith(syspath, "/sys")) {
479 snprintf(path, sizeof(path), "/sys/%s", syspath);
483 test_device(udev, syspath);
484 test_device_devnum(udev);
485 test_device_subsys_name(udev);
486 test_device_parents(udev, syspath);
488 test_enumerate(udev, subsystem);