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>
25 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
27 static void log_fn(struct udev *udev,
28 int priority, const char *file, int line, const char *fn,
29 const char *format, va_list args)
31 printf("test-libudev: %s %s:%d ", fn, file, line);
32 vprintf(format, args);
35 static void print_device(struct udev_device *device)
40 struct udev_list_entry *list_entry;
42 printf("*** device: %p ***\n", device);
43 str = udev_device_get_action(device);
45 printf("action: '%s'\n", str);
47 str = udev_device_get_syspath(device);
48 printf("syspath: '%s'\n", str);
50 str = udev_device_get_sysname(device);
51 printf("sysname: '%s'\n", str);
53 str = udev_device_get_sysnum(device);
55 printf("sysnum: '%s'\n", str);
57 str = udev_device_get_devpath(device);
58 printf("devpath: '%s'\n", str);
60 str = udev_device_get_subsystem(device);
62 printf("subsystem: '%s'\n", str);
64 str = udev_device_get_devtype(device);
66 printf("devtype: '%s'\n", str);
68 str = udev_device_get_driver(device);
70 printf("driver: '%s'\n", str);
72 str = udev_device_get_devnode(device);
74 printf("devname: '%s'\n", str);
76 devnum = udev_device_get_devnum(device);
77 if (major(devnum) > 0)
78 printf("devnum: %u:%u\n", major(devnum), minor(devnum));
81 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) {
82 printf("link: '%s'\n", udev_list_entry_get_name(list_entry));
86 printf("found %i links\n", count);
89 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) {
90 printf("property: '%s=%s'\n",
91 udev_list_entry_get_name(list_entry),
92 udev_list_entry_get_value(list_entry));
96 printf("found %i properties\n", count);
98 str = udev_device_get_property_value(device, "MAJOR");
100 printf("MAJOR: '%s'\n", str);
102 str = udev_device_get_sysattr_value(device, "dev");
104 printf("attr{dev}: '%s'\n", str);
109 static int test_device(struct udev *udev, const char *syspath)
111 struct udev_device *device;
113 printf("looking at device: %s\n", syspath);
114 device = udev_device_new_from_syspath(udev, syspath);
115 if (device == NULL) {
116 printf("no device found\n");
119 print_device(device);
120 udev_device_unref(device);
124 static int test_device_parents(struct udev *udev, const char *syspath)
126 struct udev_device *device;
127 struct udev_device *device_parent;
129 printf("looking at device: %s\n", syspath);
130 device = udev_device_new_from_syspath(udev, syspath);
134 printf("looking at parents\n");
135 device_parent = device;
137 print_device(device_parent);
138 device_parent = udev_device_get_parent(device_parent);
139 } while (device_parent != NULL);
141 printf("looking at parents again\n");
142 device_parent = device;
144 print_device(device_parent);
145 device_parent = udev_device_get_parent(device_parent);
146 } while (device_parent != NULL);
147 udev_device_unref(device);
152 static int test_device_devnum(struct udev *udev)
154 dev_t devnum = makedev(1, 3);
155 struct udev_device *device;
157 printf("looking up device: %u:%u\n", major(devnum), minor(devnum));
158 device = udev_device_new_from_devnum(udev, 'c', devnum);
161 print_device(device);
162 udev_device_unref(device);
166 static int test_device_subsys_name(struct udev *udev)
168 struct udev_device *device;
170 printf("looking up device: 'block':'sda'\n");
171 device = udev_device_new_from_subsystem_sysname(udev, "block", "sda");
174 print_device(device);
175 udev_device_unref(device);
177 printf("looking up device: 'subsystem':'pci'\n");
178 device = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci");
181 print_device(device);
182 udev_device_unref(device);
184 printf("looking up device: 'drivers':'scsi:sd'\n");
185 device = udev_device_new_from_subsystem_sysname(udev, "drivers", "scsi:sd");
188 print_device(device);
189 udev_device_unref(device);
191 printf("looking up device: 'module':'printk'\n");
192 device = udev_device_new_from_subsystem_sysname(udev, "module", "printk");
195 print_device(device);
196 udev_device_unref(device);
200 static int test_enumerate_print_list(struct udev_enumerate *enumerate)
202 struct udev_list_entry *list_entry;
205 udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
206 struct udev_device *device;
208 device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
209 udev_list_entry_get_name(list_entry));
210 if (device != NULL) {
211 printf("device: '%s' (%s)\n",
212 udev_device_get_syspath(device),
213 udev_device_get_subsystem(device));
214 udev_device_unref(device);
218 printf("found %i devices\n\n", count);
222 static int test_monitor(struct udev *udev)
224 struct udev_monitor *udev_monitor;
227 struct epoll_event ep_udev, ep_stdin;
229 fd_ep = epoll_create1(EPOLL_CLOEXEC);
231 printf("error creating epoll fd: %m\n");
235 udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
236 if (udev_monitor == NULL) {
237 printf("no socket\n");
240 fd_udev = udev_monitor_get_fd(udev_monitor);
242 if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) < 0 ||
243 udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) < 0 ||
244 udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") < 0) {
245 printf("filter failed\n");
249 if (udev_monitor_enable_receiving(udev_monitor) < 0) {
250 printf("bind failed\n");
254 memset(&ep_udev, 0, sizeof(struct epoll_event));
255 ep_udev.events = EPOLLIN;
256 ep_udev.data.fd = fd_udev;
257 if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) < 0) {
258 printf("fail to add fd to epoll: %m\n");
262 memset(&ep_stdin, 0, sizeof(struct epoll_event));
263 ep_stdin.events = EPOLLIN;
264 ep_stdin.data.fd = STDIN_FILENO;
265 if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) < 0) {
266 printf("fail to add fd to epoll: %m\n");
272 struct epoll_event ev[4];
273 struct udev_device *device;
276 printf("waiting for events from udev, press ENTER to exit\n");
277 fdcount = epoll_wait(fd_ep, ev, ARRAY_SIZE(ev), -1);
278 printf("epoll fd count: %i\n", fdcount);
280 for (i = 0; i < fdcount; i++) {
281 if (ev[i].data.fd == fd_udev && ev[i].events & EPOLLIN) {
282 device = udev_monitor_receive_device(udev_monitor);
283 if (device == NULL) {
284 printf("no device from socket\n");
287 print_device(device);
288 udev_device_unref(device);
291 if (ev[i].data.fd == STDIN_FILENO && ev[i].events & EPOLLIN) {
292 printf("exiting loop\n");
300 udev_monitor_unref(udev_monitor);
304 static int test_queue(struct udev *udev)
306 struct udev_queue *udev_queue;
307 unsigned long long int seqnum;
308 struct udev_list_entry *list_entry;
310 udev_queue = udev_queue_new(udev);
311 if (udev_queue == NULL)
313 seqnum = udev_queue_get_kernel_seqnum(udev_queue);
314 printf("seqnum kernel: %llu\n", seqnum);
315 seqnum = udev_queue_get_udev_seqnum(udev_queue);
316 printf("seqnum udev : %llu\n", seqnum);
318 if (udev_queue_get_queue_is_empty(udev_queue))
319 printf("queue is empty\n");
320 printf("get queue list\n");
321 udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
322 printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
324 printf("get queue list again\n");
325 udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
326 printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry), udev_list_entry_get_value(list_entry));
328 printf("get failed list\n");
329 udev_list_entry_foreach(list_entry, udev_queue_get_failed_list_entry(udev_queue))
330 printf("failed: '%s'\n", udev_list_entry_get_name(list_entry));
333 list_entry = udev_queue_get_queued_list_entry(udev_queue);
334 if (list_entry != NULL) {
335 printf("event [%llu] is queued\n", seqnum);
336 seqnum = strtoull(udev_list_entry_get_value(list_entry), NULL, 10);
337 if (udev_queue_get_seqnum_is_finished(udev_queue, seqnum))
338 printf("event [%llu] is not finished\n", seqnum);
340 printf("event [%llu] is finished\n", seqnum);
343 udev_queue_unref(udev_queue);
347 static int test_enumerate(struct udev *udev, const char *subsystem)
349 struct udev_enumerate *udev_enumerate;
351 printf("enumerate '%s'\n", subsystem == NULL ? "<all>" : subsystem);
352 udev_enumerate = udev_enumerate_new(udev);
353 if (udev_enumerate == NULL)
355 udev_enumerate_add_match_subsystem(udev_enumerate, subsystem);
356 udev_enumerate_scan_devices(udev_enumerate);
357 test_enumerate_print_list(udev_enumerate);
358 udev_enumerate_unref(udev_enumerate);
360 printf("enumerate 'net' + duplicated scan + null + zero\n");
361 udev_enumerate = udev_enumerate_new(udev);
362 if (udev_enumerate == NULL)
364 udev_enumerate_add_match_subsystem(udev_enumerate, "net");
365 udev_enumerate_scan_devices(udev_enumerate);
366 udev_enumerate_scan_devices(udev_enumerate);
367 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
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/null");
371 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
372 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
373 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
374 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
375 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
376 udev_enumerate_scan_devices(udev_enumerate);
377 test_enumerate_print_list(udev_enumerate);
378 udev_enumerate_unref(udev_enumerate);
380 printf("enumerate 'block'\n");
381 udev_enumerate = udev_enumerate_new(udev);
382 if (udev_enumerate == NULL)
384 udev_enumerate_add_match_subsystem(udev_enumerate,"block");
385 udev_enumerate_add_match_is_initialized(udev_enumerate);
386 udev_enumerate_scan_devices(udev_enumerate);
387 test_enumerate_print_list(udev_enumerate);
388 udev_enumerate_unref(udev_enumerate);
390 printf("enumerate 'not block'\n");
391 udev_enumerate = udev_enumerate_new(udev);
392 if (udev_enumerate == NULL)
394 udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block");
395 udev_enumerate_scan_devices(udev_enumerate);
396 test_enumerate_print_list(udev_enumerate);
397 udev_enumerate_unref(udev_enumerate);
399 printf("enumerate 'pci, mem, vc'\n");
400 udev_enumerate = udev_enumerate_new(udev);
401 if (udev_enumerate == NULL)
403 udev_enumerate_add_match_subsystem(udev_enumerate, "pci");
404 udev_enumerate_add_match_subsystem(udev_enumerate, "mem");
405 udev_enumerate_add_match_subsystem(udev_enumerate, "vc");
406 udev_enumerate_scan_devices(udev_enumerate);
407 test_enumerate_print_list(udev_enumerate);
408 udev_enumerate_unref(udev_enumerate);
410 printf("enumerate 'subsystem'\n");
411 udev_enumerate = udev_enumerate_new(udev);
412 if (udev_enumerate == NULL)
414 udev_enumerate_scan_subsystems(udev_enumerate);
415 test_enumerate_print_list(udev_enumerate);
416 udev_enumerate_unref(udev_enumerate);
418 printf("enumerate 'property IF_FS_*=filesystem'\n");
419 udev_enumerate = udev_enumerate_new(udev);
420 if (udev_enumerate == NULL)
422 udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem");
423 udev_enumerate_scan_devices(udev_enumerate);
424 test_enumerate_print_list(udev_enumerate);
425 udev_enumerate_unref(udev_enumerate);
429 int main(int argc, char *argv[])
431 struct udev *udev = NULL;
432 static const struct option options[] = {
433 { "syspath", required_argument, NULL, 'p' },
434 { "subsystem", required_argument, NULL, 's' },
435 { "debug", no_argument, NULL, 'd' },
436 { "help", no_argument, NULL, 'h' },
437 { "version", no_argument, NULL, 'V' },
440 const char *syspath = "/devices/virtual/mem/null";
441 const char *subsystem = NULL;
446 printf("context: %p\n", udev);
448 printf("no context\n");
451 udev_set_log_fn(udev, log_fn);
452 printf("set log: %p\n", log_fn);
457 option = getopt_long(argc, argv, "+p:s:dhV", options, NULL);
469 if (udev_get_log_priority(udev) < LOG_INFO)
470 udev_set_log_priority(udev, LOG_INFO);
473 printf("--debug --syspath= --subsystem= --help\n");
476 printf("%s\n", VERSION);
483 str = udev_get_sys_path(udev);
484 printf("sys_path: '%s'\n", str);
485 str = udev_get_dev_path(udev);
486 printf("dev_path: '%s'\n", str);
488 /* add sys path if needed */
489 if (strncmp(syspath, udev_get_sys_path(udev), strlen(udev_get_sys_path(udev))) != 0) {
490 snprintf(path, sizeof(path), "%s%s", udev_get_sys_path(udev), syspath);
494 test_device(udev, syspath);
495 test_device_devnum(udev);
496 test_device_subsys_name(udev);
497 test_device_parents(udev, syspath);
499 test_enumerate(udev, subsystem);