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git.ipfire.org Git - thirdparty/systemd.git/blob - src/test/test-libudev.c
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
= NULL
;
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
);
289 } else if (ev
[i
].data
.fd
== STDIN_FILENO
&& ev
[i
].events
& EPOLLIN
) {
290 printf("exiting loop\n");
298 udev_monitor_unref(udev_monitor
);
302 static int test_queue(struct udev
*udev
)
304 struct udev_queue
*udev_queue
;
305 unsigned long long int seqnum
;
306 struct udev_list_entry
*list_entry
;
308 udev_queue
= udev_queue_new(udev
);
309 if (udev_queue
== NULL
)
311 seqnum
= udev_queue_get_kernel_seqnum(udev_queue
);
312 printf("seqnum kernel: %llu\n", seqnum
);
313 seqnum
= udev_queue_get_udev_seqnum(udev_queue
);
314 printf("seqnum udev : %llu\n", seqnum
);
316 if (udev_queue_get_queue_is_empty(udev_queue
))
317 printf("queue is empty\n");
318 printf("get queue list\n");
319 udev_list_entry_foreach(list_entry
, udev_queue_get_queued_list_entry(udev_queue
))
320 printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry
), udev_list_entry_get_value(list_entry
));
322 printf("get queue list again\n");
323 udev_list_entry_foreach(list_entry
, udev_queue_get_queued_list_entry(udev_queue
))
324 printf("queued: '%s' [%s]\n", udev_list_entry_get_name(list_entry
), udev_list_entry_get_value(list_entry
));
327 list_entry
= udev_queue_get_queued_list_entry(udev_queue
);
328 if (list_entry
!= NULL
) {
329 printf("event [%llu] is queued\n", seqnum
);
330 seqnum
= strtoull(udev_list_entry_get_value(list_entry
), NULL
, 10);
331 if (udev_queue_get_seqnum_is_finished(udev_queue
, seqnum
))
332 printf("event [%llu] is not finished\n", seqnum
);
334 printf("event [%llu] is finished\n", seqnum
);
337 udev_queue_unref(udev_queue
);
341 static int test_enumerate(struct udev
*udev
, const char *subsystem
)
343 struct udev_enumerate
*udev_enumerate
;
345 printf("enumerate '%s'\n", subsystem
== NULL
? "<all>" : subsystem
);
346 udev_enumerate
= udev_enumerate_new(udev
);
347 if (udev_enumerate
== NULL
)
349 udev_enumerate_add_match_subsystem(udev_enumerate
, subsystem
);
350 udev_enumerate_scan_devices(udev_enumerate
);
351 test_enumerate_print_list(udev_enumerate
);
352 udev_enumerate_unref(udev_enumerate
);
354 printf("enumerate 'net' + duplicated scan + null + zero\n");
355 udev_enumerate
= udev_enumerate_new(udev
);
356 if (udev_enumerate
== NULL
)
358 udev_enumerate_add_match_subsystem(udev_enumerate
, "net");
359 udev_enumerate_scan_devices(udev_enumerate
);
360 udev_enumerate_scan_devices(udev_enumerate
);
361 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
362 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
363 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
364 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
365 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
366 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
367 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
368 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
369 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
370 udev_enumerate_scan_devices(udev_enumerate
);
371 test_enumerate_print_list(udev_enumerate
);
372 udev_enumerate_unref(udev_enumerate
);
374 printf("enumerate 'block'\n");
375 udev_enumerate
= udev_enumerate_new(udev
);
376 if (udev_enumerate
== NULL
)
378 udev_enumerate_add_match_subsystem(udev_enumerate
,"block");
379 udev_enumerate_add_match_is_initialized(udev_enumerate
);
380 udev_enumerate_scan_devices(udev_enumerate
);
381 test_enumerate_print_list(udev_enumerate
);
382 udev_enumerate_unref(udev_enumerate
);
384 printf("enumerate 'not block'\n");
385 udev_enumerate
= udev_enumerate_new(udev
);
386 if (udev_enumerate
== NULL
)
388 udev_enumerate_add_nomatch_subsystem(udev_enumerate
, "block");
389 udev_enumerate_scan_devices(udev_enumerate
);
390 test_enumerate_print_list(udev_enumerate
);
391 udev_enumerate_unref(udev_enumerate
);
393 printf("enumerate 'pci, mem, vc'\n");
394 udev_enumerate
= udev_enumerate_new(udev
);
395 if (udev_enumerate
== NULL
)
397 udev_enumerate_add_match_subsystem(udev_enumerate
, "pci");
398 udev_enumerate_add_match_subsystem(udev_enumerate
, "mem");
399 udev_enumerate_add_match_subsystem(udev_enumerate
, "vc");
400 udev_enumerate_scan_devices(udev_enumerate
);
401 test_enumerate_print_list(udev_enumerate
);
402 udev_enumerate_unref(udev_enumerate
);
404 printf("enumerate 'subsystem'\n");
405 udev_enumerate
= udev_enumerate_new(udev
);
406 if (udev_enumerate
== NULL
)
408 udev_enumerate_scan_subsystems(udev_enumerate
);
409 test_enumerate_print_list(udev_enumerate
);
410 udev_enumerate_unref(udev_enumerate
);
412 printf("enumerate 'property IF_FS_*=filesystem'\n");
413 udev_enumerate
= udev_enumerate_new(udev
);
414 if (udev_enumerate
== NULL
)
416 udev_enumerate_add_match_property(udev_enumerate
, "ID_FS*", "filesystem");
417 udev_enumerate_scan_devices(udev_enumerate
);
418 test_enumerate_print_list(udev_enumerate
);
419 udev_enumerate_unref(udev_enumerate
);
423 int main(int argc
, char *argv
[])
425 struct udev
*udev
= NULL
;
426 static const struct option options
[] = {
427 { "syspath", required_argument
, NULL
, 'p' },
428 { "subsystem", required_argument
, NULL
, 's' },
429 { "debug", no_argument
, NULL
, 'd' },
430 { "help", no_argument
, NULL
, 'h' },
431 { "version", no_argument
, NULL
, 'V' },
434 const char *syspath
= "/devices/virtual/mem/null";
435 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 str
= udev_get_sys_path(udev
);
478 printf("sys_path: '%s'\n", str
);
479 str
= udev_get_dev_path(udev
);
480 printf("dev_path: '%s'\n", str
);
482 /* add sys path if needed */
483 if (strncmp(syspath
, udev_get_sys_path(udev
), strlen(udev_get_sys_path(udev
))) != 0) {
484 snprintf(path
, sizeof(path
), "%s%s", udev_get_sys_path(udev
), syspath
);
488 test_device(udev
, syspath
);
489 test_device_devnum(udev
);
490 test_device_subsys_name(udev
);
491 test_device_parents(udev
, syspath
);
493 test_enumerate(udev
, subsystem
);