2 This file is part of systemd.
4 Copyright 2008-2012 Kay Sievers <kay@vrfy.org>
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include <sys/epoll.h>
32 #include "udev-util.h"
35 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
38 static void log_fn(struct udev *udev,
39 int priority, const char *file, int line, const char *fn,
40 const char *format, va_list args) {
41 printf("test-libudev: %s %s:%d ", fn, file, line);
42 vprintf(format, args);
45 static void print_device(struct udev_device *device) {
49 struct udev_list_entry *list_entry;
51 printf("*** device: %p ***\n", device);
52 str = udev_device_get_action(device);
54 printf("action: '%s'\n", str);
56 str = udev_device_get_syspath(device);
57 printf("syspath: '%s'\n", str);
59 str = udev_device_get_sysname(device);
60 printf("sysname: '%s'\n", str);
62 str = udev_device_get_sysnum(device);
64 printf("sysnum: '%s'\n", str);
66 str = udev_device_get_devpath(device);
67 printf("devpath: '%s'\n", str);
69 str = udev_device_get_subsystem(device);
71 printf("subsystem: '%s'\n", str);
73 str = udev_device_get_devtype(device);
75 printf("devtype: '%s'\n", str);
77 str = udev_device_get_driver(device);
79 printf("driver: '%s'\n", str);
81 str = udev_device_get_devnode(device);
83 printf("devname: '%s'\n", str);
85 devnum = udev_device_get_devnum(device);
86 if (major(devnum) > 0)
87 printf("devnum: %u:%u\n", major(devnum), minor(devnum));
90 udev_list_entry_foreach(list_entry, udev_device_get_devlinks_list_entry(device)) {
91 printf("link: '%s'\n", udev_list_entry_get_name(list_entry));
95 printf("found %i links\n", count);
98 udev_list_entry_foreach(list_entry, udev_device_get_properties_list_entry(device)) {
99 printf("property: '%s=%s'\n",
100 udev_list_entry_get_name(list_entry),
101 udev_list_entry_get_value(list_entry));
105 printf("found %i properties\n", count);
107 str = udev_device_get_property_value(device, "MAJOR");
109 printf("MAJOR: '%s'\n", str);
111 str = udev_device_get_sysattr_value(device, "dev");
113 printf("attr{dev}: '%s'\n", str);
118 static int test_device(struct udev *udev, const char *syspath) {
119 _cleanup_udev_device_unref_ struct udev_device *device;
121 printf("looking at device: %s\n", syspath);
122 device = udev_device_new_from_syspath(udev, syspath);
123 if (device == NULL) {
124 printf("no device found\n");
127 print_device(device);
132 static int test_device_parents(struct udev *udev, const char *syspath) {
133 _cleanup_udev_device_unref_ struct udev_device *device;
134 struct udev_device *device_parent;
136 printf("looking at device: %s\n", syspath);
137 device = udev_device_new_from_syspath(udev, syspath);
141 printf("looking at parents\n");
142 device_parent = device;
144 print_device(device_parent);
145 device_parent = udev_device_get_parent(device_parent);
146 } while (device_parent != NULL);
148 printf("looking at parents again\n");
149 device_parent = device;
151 print_device(device_parent);
152 device_parent = udev_device_get_parent(device_parent);
153 } while (device_parent != NULL);
158 static int test_device_devnum(struct udev *udev) {
159 dev_t devnum = makedev(1, 3);
160 struct udev_device *device;
162 printf("looking up device: %u:%u\n", major(devnum), minor(devnum));
163 device = udev_device_new_from_devnum(udev, 'c', devnum);
166 print_device(device);
167 udev_device_unref(device);
171 static int test_device_subsys_name(struct udev *udev) {
172 struct udev_device *device;
174 printf("looking up device: 'block':'sda'\n");
175 device = udev_device_new_from_subsystem_sysname(udev, "block", "sda");
178 print_device(device);
179 udev_device_unref(device);
181 printf("looking up device: 'subsystem':'pci'\n");
182 device = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci");
185 print_device(device);
186 udev_device_unref(device);
188 printf("looking up device: 'drivers':'scsi:sd'\n");
189 device = udev_device_new_from_subsystem_sysname(udev, "drivers", "scsi:sd");
192 print_device(device);
193 udev_device_unref(device);
195 printf("looking up device: 'module':'printk'\n");
196 device = udev_device_new_from_subsystem_sysname(udev, "module", "printk");
199 print_device(device);
200 udev_device_unref(device);
204 static int test_enumerate_print_list(struct udev_enumerate *enumerate) {
205 struct udev_list_entry *list_entry;
208 udev_list_entry_foreach(list_entry, udev_enumerate_get_list_entry(enumerate)) {
209 struct udev_device *device;
211 device = udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate),
212 udev_list_entry_get_name(list_entry));
213 if (device != NULL) {
214 printf("device: '%s' (%s)\n",
215 udev_device_get_syspath(device),
216 udev_device_get_subsystem(device));
217 udev_device_unref(device);
221 printf("found %i devices\n\n", count);
225 static int test_monitor(struct udev *udev) {
226 struct udev_monitor *udev_monitor = NULL;
229 struct epoll_event ep_udev, ep_stdin;
231 fd_ep = epoll_create1(EPOLL_CLOEXEC);
233 printf("error creating epoll fd: %m\n");
237 udev_monitor = udev_monitor_new_from_netlink(udev, "udev");
238 if (udev_monitor == NULL) {
239 printf("no socket\n");
242 fd_udev = udev_monitor_get_fd(udev_monitor);
244 if (udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "block", NULL) < 0 ||
245 udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "tty", NULL) < 0 ||
246 udev_monitor_filter_add_match_subsystem_devtype(udev_monitor, "usb", "usb_device") < 0) {
247 printf("filter failed\n");
251 if (udev_monitor_enable_receiving(udev_monitor) < 0) {
252 printf("bind failed\n");
256 memzero(&ep_udev, sizeof(struct epoll_event));
257 ep_udev.events = EPOLLIN;
258 ep_udev.data.fd = fd_udev;
259 if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, fd_udev, &ep_udev) < 0) {
260 printf("fail to add fd to epoll: %m\n");
264 memzero(&ep_stdin, sizeof(struct epoll_event));
265 ep_stdin.events = EPOLLIN;
266 ep_stdin.data.fd = STDIN_FILENO;
267 if (epoll_ctl(fd_ep, EPOLL_CTL_ADD, STDIN_FILENO, &ep_stdin) < 0) {
268 printf("fail to add fd to epoll: %m\n");
274 struct epoll_event ev[4];
275 struct udev_device *device;
278 printf("waiting for events from udev, press ENTER to exit\n");
279 fdcount = epoll_wait(fd_ep, ev, ARRAY_SIZE(ev), -1);
280 printf("epoll fd count: %i\n", fdcount);
282 for (i = 0; i < fdcount; i++) {
283 if (ev[i].data.fd == fd_udev && ev[i].events & EPOLLIN) {
284 device = udev_monitor_receive_device(udev_monitor);
285 if (device == NULL) {
286 printf("no device from socket\n");
289 print_device(device);
290 udev_device_unref(device);
291 } else 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) {
305 struct udev_queue *udev_queue;
307 udev_queue = udev_queue_new(udev);
308 if (udev_queue == NULL)
311 if (udev_queue_get_queue_is_empty(udev_queue))
312 printf("queue is empty\n");
314 udev_queue_unref(udev_queue);
318 static int test_enumerate(struct udev *udev, const char *subsystem) {
319 struct udev_enumerate *udev_enumerate;
321 printf("enumerate '%s'\n", subsystem == NULL ? "<all>" : subsystem);
322 udev_enumerate = udev_enumerate_new(udev);
323 if (udev_enumerate == NULL)
325 udev_enumerate_add_match_subsystem(udev_enumerate, subsystem);
326 udev_enumerate_scan_devices(udev_enumerate);
327 test_enumerate_print_list(udev_enumerate);
328 udev_enumerate_unref(udev_enumerate);
330 printf("enumerate 'net' + duplicated scan + null + zero\n");
331 udev_enumerate = udev_enumerate_new(udev);
332 if (udev_enumerate == NULL)
334 udev_enumerate_add_match_subsystem(udev_enumerate, "net");
335 udev_enumerate_scan_devices(udev_enumerate);
336 udev_enumerate_scan_devices(udev_enumerate);
337 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
338 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
339 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
340 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
341 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
342 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
343 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/null");
344 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
345 udev_enumerate_add_syspath(udev_enumerate, "/sys/class/mem/zero");
346 udev_enumerate_scan_devices(udev_enumerate);
347 test_enumerate_print_list(udev_enumerate);
348 udev_enumerate_unref(udev_enumerate);
350 printf("enumerate 'block'\n");
351 udev_enumerate = udev_enumerate_new(udev);
352 if (udev_enumerate == NULL)
354 udev_enumerate_add_match_subsystem(udev_enumerate,"block");
355 udev_enumerate_add_match_is_initialized(udev_enumerate);
356 udev_enumerate_scan_devices(udev_enumerate);
357 test_enumerate_print_list(udev_enumerate);
358 udev_enumerate_unref(udev_enumerate);
360 printf("enumerate 'not block'\n");
361 udev_enumerate = udev_enumerate_new(udev);
362 if (udev_enumerate == NULL)
364 udev_enumerate_add_nomatch_subsystem(udev_enumerate, "block");
365 udev_enumerate_scan_devices(udev_enumerate);
366 test_enumerate_print_list(udev_enumerate);
367 udev_enumerate_unref(udev_enumerate);
369 printf("enumerate 'pci, mem, vc'\n");
370 udev_enumerate = udev_enumerate_new(udev);
371 if (udev_enumerate == NULL)
373 udev_enumerate_add_match_subsystem(udev_enumerate, "pci");
374 udev_enumerate_add_match_subsystem(udev_enumerate, "mem");
375 udev_enumerate_add_match_subsystem(udev_enumerate, "vc");
376 udev_enumerate_scan_devices(udev_enumerate);
377 test_enumerate_print_list(udev_enumerate);
378 udev_enumerate_unref(udev_enumerate);
380 printf("enumerate 'subsystem'\n");
381 udev_enumerate = udev_enumerate_new(udev);
382 if (udev_enumerate == NULL)
384 udev_enumerate_scan_subsystems(udev_enumerate);
385 test_enumerate_print_list(udev_enumerate);
386 udev_enumerate_unref(udev_enumerate);
388 printf("enumerate 'property IF_FS_*=filesystem'\n");
389 udev_enumerate = udev_enumerate_new(udev);
390 if (udev_enumerate == NULL)
392 udev_enumerate_add_match_property(udev_enumerate, "ID_FS*", "filesystem");
393 udev_enumerate_scan_devices(udev_enumerate);
394 test_enumerate_print_list(udev_enumerate);
395 udev_enumerate_unref(udev_enumerate);
399 static void test_hwdb(struct udev *udev, const char *modalias) {
400 struct udev_hwdb *hwdb;
401 struct udev_list_entry *entry;
403 hwdb = udev_hwdb_new(udev);
405 udev_list_entry_foreach(entry, udev_hwdb_get_properties_list_entry(hwdb, modalias, 0))
406 printf("'%s'='%s'\n", udev_list_entry_get_name(entry), udev_list_entry_get_value(entry));
409 hwdb = udev_hwdb_unref(hwdb);
410 assert(hwdb == NULL);
413 int main(int argc, char *argv[]) {
414 struct udev *udev = NULL;
415 static const struct option options[] = {
416 { "syspath", required_argument, NULL, 'p' },
417 { "subsystem", required_argument, NULL, 's' },
418 { "debug", no_argument, NULL, 'd' },
419 { "help", no_argument, NULL, 'h' },
420 { "version", no_argument, NULL, 'V' },
423 const char *syspath = "/devices/virtual/mem/null";
424 const char *subsystem = NULL;
428 printf("context: %p\n", udev);
430 printf("no context\n");
433 udev_set_log_fn(udev, log_fn);
434 printf("set log: %p\n", log_fn);
439 option = getopt_long(argc, argv, "+p:s:dhV", options, NULL);
451 if (udev_get_log_priority(udev) < LOG_INFO)
452 udev_set_log_priority(udev, LOG_INFO);
455 printf("--debug --syspath= --subsystem= --help\n");
458 printf("%s\n", VERSION);
465 /* add sys path if needed */
466 if (!startswith(syspath, "/sys")) {
467 snprintf(path, sizeof(path), "/sys/%s", syspath);
471 test_device(udev, syspath);
472 test_device_devnum(udev);
473 test_device_subsys_name(udev);
474 test_device_parents(udev, syspath);
476 test_enumerate(udev, subsystem);
480 test_hwdb(udev, "usb:v0D50p0011*");