]>
git.ipfire.org Git - thirdparty/systemd.git/blob - src/test/test-libudev.c
1 /* SPDX-License-Identifier: LGPL-2.1+ */
8 #include "alloc-util.h"
11 #include "libudev-list-internal.h"
12 #include "libudev-util.h"
14 #include "main-func.h"
15 #include "stdio-util.h"
16 #include "string-util.h"
19 static bool arg_monitor
= false;
21 static void print_device(struct udev_device
*device
) {
25 struct udev_list_entry
*list_entry
;
27 log_info("*** device: %p ***", device
);
28 str
= udev_device_get_action(device
);
30 log_info("action: '%s'", str
);
32 str
= udev_device_get_syspath(device
);
33 log_info("syspath: '%s'", str
);
35 str
= udev_device_get_sysname(device
);
36 log_info("sysname: '%s'", str
);
38 str
= udev_device_get_sysnum(device
);
40 log_info("sysnum: '%s'", str
);
42 str
= udev_device_get_devpath(device
);
43 log_info("devpath: '%s'", str
);
45 str
= udev_device_get_subsystem(device
);
47 log_info("subsystem: '%s'", str
);
49 str
= udev_device_get_devtype(device
);
51 log_info("devtype: '%s'", str
);
53 str
= udev_device_get_driver(device
);
55 log_info("driver: '%s'", str
);
57 str
= udev_device_get_devnode(device
);
59 log_info("devname: '%s'", str
);
61 devnum
= udev_device_get_devnum(device
);
62 if (major(devnum
) > 0)
63 log_info("devnum: %u:%u", major(devnum
), minor(devnum
));
66 udev_list_entry_foreach(list_entry
, udev_device_get_devlinks_list_entry(device
)) {
67 log_info("link: '%s'", udev_list_entry_get_name(list_entry
));
71 log_info("found %i links", count
);
74 udev_list_entry_foreach(list_entry
, udev_device_get_properties_list_entry(device
)) {
75 log_info("property: '%s=%s'",
76 udev_list_entry_get_name(list_entry
),
77 udev_list_entry_get_value(list_entry
));
81 log_info("found %i properties", count
);
83 str
= udev_device_get_property_value(device
, "MAJOR");
85 log_info("MAJOR: '%s'", str
);
87 str
= udev_device_get_sysattr_value(device
, "dev");
89 log_info("attr{dev}: '%s'", str
);
92 static void test_device(struct udev
*udev
, const char *syspath
) {
93 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
95 log_info("/* %s, device %s */", __func__
, syspath
);
96 device
= udev_device_new_from_syspath(udev
, syspath
);
100 log_warning_errno(errno
, "udev_device_new_from_syspath: %m");
103 static void test_device_parents(struct udev
*udev
, const char *syspath
) {
104 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
105 struct udev_device
*device_parent
;
107 log_info("/* %s, device %s */", __func__
, syspath
);
108 device
= udev_device_new_from_syspath(udev
, syspath
);
112 log_info("looking at parents");
113 device_parent
= device
;
115 print_device(device_parent
);
116 device_parent
= udev_device_get_parent(device_parent
);
117 } while (device_parent
!= NULL
);
119 log_info("looking at parents again");
120 device_parent
= device
;
122 print_device(device_parent
);
123 device_parent
= udev_device_get_parent(device_parent
);
124 } while (device_parent
!= NULL
);
127 static void test_device_devnum(struct udev
*udev
) {
128 dev_t devnum
= makedev(1, 3);
129 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
131 log_info("/* %s, device %d:%d */", __func__
, major(devnum
), minor(devnum
));
133 device
= udev_device_new_from_devnum(udev
, 'c', devnum
);
135 print_device(device
);
137 log_warning_errno(errno
, "udev_device_new_from_devnum: %m");
140 static void test_device_subsys_name(struct udev
*udev
, const char *subsys
, const char *dev
) {
141 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
143 log_info("looking up device: '%s:%s'", subsys
, dev
);
144 device
= udev_device_new_from_subsystem_sysname(udev
, subsys
, dev
);
146 log_warning_errno(errno
, "udev_device_new_from_subsystem_sysname: %m");
148 print_device(device
);
151 static int enumerate_print_list(struct udev_enumerate
*enumerate
) {
152 struct udev_list_entry
*list_entry
;
155 udev_list_entry_foreach(list_entry
, udev_enumerate_get_list_entry(enumerate
)) {
156 struct udev_device
*device
;
158 device
= udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate
),
159 udev_list_entry_get_name(list_entry
));
161 log_info("device: '%s' (%s)",
162 udev_device_get_syspath(device
),
163 udev_device_get_subsystem(device
));
164 udev_device_unref(device
);
168 log_info("found %i devices", count
);
172 static void test_monitor(struct udev
*udev
) {
173 _cleanup_(udev_monitor_unrefp
) struct udev_monitor
*udev_monitor
;
174 _cleanup_close_
int fd_ep
;
176 struct epoll_event ep_udev
= {
180 .data
.fd
= STDIN_FILENO
,
183 log_info("/* %s */", __func__
);
185 fd_ep
= epoll_create1(EPOLL_CLOEXEC
);
186 assert_se(fd_ep
>= 0);
188 udev_monitor
= udev_monitor_new_from_netlink(udev
, "udev");
189 assert_se(udev_monitor
!= NULL
);
191 fd_udev
= udev_monitor_get_fd(udev_monitor
);
192 ep_udev
.data
.fd
= fd_udev
;
194 assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor
, "block", NULL
) >= 0);
195 assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor
, "tty", NULL
) >= 0);
196 assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor
, "usb", "usb_device") >= 0);
198 assert_se(udev_monitor_enable_receiving(udev_monitor
) >= 0);
200 assert_se(epoll_ctl(fd_ep
, EPOLL_CTL_ADD
, fd_udev
, &ep_udev
) >= 0);
201 assert_se(epoll_ctl(fd_ep
, EPOLL_CTL_ADD
, STDIN_FILENO
, &ep_stdin
) >= 0);
205 struct epoll_event ev
[4];
206 struct udev_device
*device
;
209 printf("waiting for events from udev, press ENTER to exit\n");
210 fdcount
= epoll_wait(fd_ep
, ev
, ELEMENTSOF(ev
), -1);
211 printf("epoll fd count: %i\n", fdcount
);
213 for (i
= 0; i
< fdcount
; i
++) {
214 if (ev
[i
].data
.fd
== fd_udev
&& ev
[i
].events
& EPOLLIN
) {
215 device
= udev_monitor_receive_device(udev_monitor
);
217 printf("no device from socket\n");
220 print_device(device
);
221 udev_device_unref(device
);
222 } else if (ev
[i
].data
.fd
== STDIN_FILENO
&& ev
[i
].events
& EPOLLIN
) {
223 printf("exiting loop\n");
230 static void test_queue(struct udev
*udev
) {
231 struct udev_queue
*udev_queue
;
234 log_info("/* %s */", __func__
);
236 assert_se(udev_queue
= udev_queue_new(udev
));
238 empty
= udev_queue_get_queue_is_empty(udev_queue
);
239 log_info("queue is %s", empty
? "empty" : "not empty");
240 udev_queue_unref(udev_queue
);
243 static int test_enumerate(struct udev
*udev
, const char *subsystem
) {
244 struct udev_enumerate
*udev_enumerate
;
247 log_info("/* %s */", __func__
);
249 log_info("enumerate '%s'", subsystem
== NULL
? "<all>" : subsystem
);
250 udev_enumerate
= udev_enumerate_new(udev
);
253 udev_enumerate_add_match_subsystem(udev_enumerate
, subsystem
);
254 udev_enumerate_scan_devices(udev_enumerate
);
255 enumerate_print_list(udev_enumerate
);
256 udev_enumerate_unref(udev_enumerate
);
258 log_info("enumerate 'net' + duplicated scan + null + zero");
259 udev_enumerate
= udev_enumerate_new(udev
);
262 udev_enumerate_add_match_subsystem(udev_enumerate
, "net");
263 udev_enumerate_scan_devices(udev_enumerate
);
264 udev_enumerate_scan_devices(udev_enumerate
);
265 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
266 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
267 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
268 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
269 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
270 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
271 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
272 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
273 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
274 udev_enumerate_scan_devices(udev_enumerate
);
275 enumerate_print_list(udev_enumerate
);
276 udev_enumerate_unref(udev_enumerate
);
278 log_info("enumerate 'block'");
279 udev_enumerate
= udev_enumerate_new(udev
);
282 udev_enumerate_add_match_subsystem(udev_enumerate
,"block");
283 r
= udev_enumerate_add_match_is_initialized(udev_enumerate
);
285 udev_enumerate_unref(udev_enumerate
);
288 udev_enumerate_scan_devices(udev_enumerate
);
289 enumerate_print_list(udev_enumerate
);
290 udev_enumerate_unref(udev_enumerate
);
292 log_info("enumerate 'not block'");
293 udev_enumerate
= udev_enumerate_new(udev
);
296 udev_enumerate_add_nomatch_subsystem(udev_enumerate
, "block");
297 udev_enumerate_scan_devices(udev_enumerate
);
298 enumerate_print_list(udev_enumerate
);
299 udev_enumerate_unref(udev_enumerate
);
301 log_info("enumerate 'pci, mem, vc'");
302 udev_enumerate
= udev_enumerate_new(udev
);
305 udev_enumerate_add_match_subsystem(udev_enumerate
, "pci");
306 udev_enumerate_add_match_subsystem(udev_enumerate
, "mem");
307 udev_enumerate_add_match_subsystem(udev_enumerate
, "vc");
308 udev_enumerate_scan_devices(udev_enumerate
);
309 enumerate_print_list(udev_enumerate
);
310 udev_enumerate_unref(udev_enumerate
);
312 log_info("enumerate 'subsystem'");
313 udev_enumerate
= udev_enumerate_new(udev
);
316 udev_enumerate_scan_subsystems(udev_enumerate
);
317 enumerate_print_list(udev_enumerate
);
318 udev_enumerate_unref(udev_enumerate
);
320 log_info("enumerate 'property IF_FS_*=filesystem'");
321 udev_enumerate
= udev_enumerate_new(udev
);
324 udev_enumerate_add_match_property(udev_enumerate
, "ID_FS*", "filesystem");
325 udev_enumerate_scan_devices(udev_enumerate
);
326 enumerate_print_list(udev_enumerate
);
327 udev_enumerate_unref(udev_enumerate
);
331 static void test_hwdb(struct udev
*udev
, const char *modalias
) {
332 struct udev_hwdb
*hwdb
;
333 struct udev_list_entry
*entry
;
335 log_info("/* %s */", __func__
);
337 hwdb
= udev_hwdb_new(udev
);
339 log_warning_errno(errno
, "Failed to open hwdb: %m");
341 udev_list_entry_foreach(entry
, udev_hwdb_get_properties_list_entry(hwdb
, modalias
, 0))
342 log_info("'%s'='%s'", udev_list_entry_get_name(entry
), udev_list_entry_get_value(entry
));
344 hwdb
= udev_hwdb_unref(hwdb
);
345 assert_se(hwdb
== NULL
);
348 static void test_util_replace_whitespace_one_len(const char *str
, size_t len
, const char *expected
) {
349 _cleanup_free_
char *result
= NULL
;
352 result
= new(char, len
+ 1);
354 r
= util_replace_whitespace(str
, result
, len
);
355 assert_se((size_t) r
== strlen(expected
));
356 assert_se(streq(result
, expected
));
359 static void test_util_replace_whitespace_one(const char *str
, const char *expected
) {
360 test_util_replace_whitespace_one_len(str
, strlen(str
), expected
);
363 static void test_util_replace_whitespace(void) {
364 log_info("/* %s */", __func__
);
366 test_util_replace_whitespace_one("hogehoge", "hogehoge");
367 test_util_replace_whitespace_one("hoge hoge", "hoge_hoge");
368 test_util_replace_whitespace_one(" hoge hoge ", "hoge_hoge");
369 test_util_replace_whitespace_one(" ", "");
370 test_util_replace_whitespace_one("hoge ", "hoge");
372 test_util_replace_whitespace_one_len("hoge hoge ", 9, "hoge_hoge");
373 test_util_replace_whitespace_one_len("hoge hoge ", 8, "hoge_hog");
374 test_util_replace_whitespace_one_len("hoge hoge ", 7, "hoge_ho");
375 test_util_replace_whitespace_one_len("hoge hoge ", 6, "hoge_h");
376 test_util_replace_whitespace_one_len("hoge hoge ", 5, "hoge");
377 test_util_replace_whitespace_one_len("hoge hoge ", 4, "hoge");
378 test_util_replace_whitespace_one_len("hoge hoge ", 3, "hog");
379 test_util_replace_whitespace_one_len("hoge hoge ", 2, "ho");
380 test_util_replace_whitespace_one_len("hoge hoge ", 1, "h");
381 test_util_replace_whitespace_one_len("hoge hoge ", 0, "");
383 test_util_replace_whitespace_one_len(" hoge hoge ", 16, "hoge_hoge");
384 test_util_replace_whitespace_one_len(" hoge hoge ", 15, "hoge_hoge");
385 test_util_replace_whitespace_one_len(" hoge hoge ", 14, "hoge_hog");
386 test_util_replace_whitespace_one_len(" hoge hoge ", 13, "hoge_ho");
387 test_util_replace_whitespace_one_len(" hoge hoge ", 12, "hoge_h");
388 test_util_replace_whitespace_one_len(" hoge hoge ", 11, "hoge");
389 test_util_replace_whitespace_one_len(" hoge hoge ", 10, "hoge");
390 test_util_replace_whitespace_one_len(" hoge hoge ", 9, "hoge");
391 test_util_replace_whitespace_one_len(" hoge hoge ", 8, "hoge");
392 test_util_replace_whitespace_one_len(" hoge hoge ", 7, "hog");
393 test_util_replace_whitespace_one_len(" hoge hoge ", 6, "ho");
394 test_util_replace_whitespace_one_len(" hoge hoge ", 5, "h");
395 test_util_replace_whitespace_one_len(" hoge hoge ", 4, "");
396 test_util_replace_whitespace_one_len(" hoge hoge ", 3, "");
397 test_util_replace_whitespace_one_len(" hoge hoge ", 2, "");
398 test_util_replace_whitespace_one_len(" hoge hoge ", 1, "");
399 test_util_replace_whitespace_one_len(" hoge hoge ", 0, "");
402 static void test_util_resolve_subsys_kernel_one(const char *str
, bool read_value
, int retval
, const char *expected
) {
403 char result
[UTIL_PATH_SIZE
] = "";
406 r
= util_resolve_subsys_kernel(str
, result
, sizeof(result
), read_value
);
407 log_info("\"%s\" → expect: \"%s\", %d, actual: \"%s\", %d", str
, strnull(expected
), retval
, result
, r
);
408 assert_se(r
== retval
);
410 assert_se(streq(result
, expected
));
413 static void test_util_resolve_subsys_kernel(void) {
414 log_info("/* %s */", __func__
);
416 test_util_resolve_subsys_kernel_one("hoge", false, -EINVAL
, NULL
);
417 test_util_resolve_subsys_kernel_one("[hoge", false, -EINVAL
, NULL
);
418 test_util_resolve_subsys_kernel_one("[hoge/foo", false, -EINVAL
, NULL
);
419 test_util_resolve_subsys_kernel_one("[hoge/]", false, -ENODEV
, NULL
);
421 test_util_resolve_subsys_kernel_one("[net/lo]", false, 0, "/sys/devices/virtual/net/lo");
422 test_util_resolve_subsys_kernel_one("[net/lo]/", false, 0, "/sys/devices/virtual/net/lo");
423 test_util_resolve_subsys_kernel_one("[net/lo]hoge", false, 0, "/sys/devices/virtual/net/lo/hoge");
424 test_util_resolve_subsys_kernel_one("[net/lo]/hoge", false, 0, "/sys/devices/virtual/net/lo/hoge");
426 test_util_resolve_subsys_kernel_one("[net/lo]", true, -EINVAL
, NULL
);
427 test_util_resolve_subsys_kernel_one("[net/lo]/", true, -EINVAL
, NULL
);
428 test_util_resolve_subsys_kernel_one("[net/lo]hoge", true, 0, "");
429 test_util_resolve_subsys_kernel_one("[net/lo]/hoge", true, 0, "");
430 test_util_resolve_subsys_kernel_one("[net/lo]address", true, 0, "00:00:00:00:00:00");
431 test_util_resolve_subsys_kernel_one("[net/lo]/address", true, 0, "00:00:00:00:00:00");
434 static void test_list(void) {
435 _cleanup_(udev_list_freep
) struct udev_list
*list
= NULL
;
436 struct udev_list_entry
*e
;
439 assert_se(list
= udev_list_new(false));
440 assert_se(!udev_list_get_entry(list
));
441 list
= udev_list_free(list
);
443 /* unique == false */
444 assert_se(list
= udev_list_new(false));
445 assert_se(udev_list_entry_add(list
, "aaa", "hoge"));
446 assert_se(udev_list_entry_add(list
, "aaa", "hogehoge"));
447 assert_se(udev_list_entry_add(list
, "bbb", "foo"));
448 e
= udev_list_get_entry(list
);
450 assert_se(streq_ptr(udev_list_entry_get_name(e
), "aaa"));
451 assert_se(streq_ptr(udev_list_entry_get_value(e
), "hoge"));
452 e
= udev_list_entry_get_next(e
);
454 assert_se(streq_ptr(udev_list_entry_get_name(e
), "aaa"));
455 assert_se(streq_ptr(udev_list_entry_get_value(e
), "hogehoge"));
456 e
= udev_list_entry_get_next(e
);
458 assert_se(streq_ptr(udev_list_entry_get_name(e
), "bbb"));
459 assert_se(streq_ptr(udev_list_entry_get_value(e
), "foo"));
460 assert_se(!udev_list_entry_get_next(e
));
462 assert_se(!udev_list_entry_get_by_name(e
, "aaa"));
463 assert_se(!udev_list_entry_get_by_name(e
, "bbb"));
464 assert_se(!udev_list_entry_get_by_name(e
, "ccc"));
465 list
= udev_list_free(list
);
468 assert_se(list
= udev_list_new(true));
469 assert_se(udev_list_entry_add(list
, "aaa", "hoge"));
470 assert_se(udev_list_entry_add(list
, "aaa", "hogehoge"));
471 assert_se(udev_list_entry_add(list
, "bbb", "foo"));
472 e
= udev_list_get_entry(list
);
474 assert_se(streq_ptr(udev_list_entry_get_name(e
), "aaa"));
475 assert_se(streq_ptr(udev_list_entry_get_value(e
), "hogehoge"));
476 e
= udev_list_entry_get_next(e
);
477 assert_se(streq_ptr(udev_list_entry_get_name(e
), "bbb"));
478 assert_se(streq_ptr(udev_list_entry_get_value(e
), "foo"));
479 assert_se(!udev_list_entry_get_next(e
));
481 e
= udev_list_entry_get_by_name(e
, "bbb");
483 assert_se(streq_ptr(udev_list_entry_get_name(e
), "bbb"));
484 assert_se(streq_ptr(udev_list_entry_get_value(e
), "foo"));
485 e
= udev_list_entry_get_by_name(e
, "aaa");
487 assert_se(streq_ptr(udev_list_entry_get_name(e
), "aaa"));
488 assert_se(streq_ptr(udev_list_entry_get_value(e
), "hogehoge"));
489 assert_se(!udev_list_entry_get_by_name(e
, "ccc"));
492 static int parse_args(int argc
, char *argv
[], const char **syspath
, const char **subsystem
) {
493 static const struct option options
[] = {
494 { "syspath", required_argument
, NULL
, 'p' },
495 { "subsystem", required_argument
, NULL
, 's' },
496 { "debug", no_argument
, NULL
, 'd' },
497 { "help", no_argument
, NULL
, 'h' },
498 { "version", no_argument
, NULL
, 'V' },
499 { "monitor", no_argument
, NULL
, 'm' },
504 while ((c
= getopt_long(argc
, argv
, "p:s:dhVm", options
, NULL
)) >= 0)
515 log_set_max_level(LOG_DEBUG
);
519 printf("--debug --syspath= --subsystem= --help\n");
523 printf("%s\n", GIT_VERSION
);
534 assert_not_reached("Unhandled option code.");
540 static int run(int argc
, char *argv
[]) {
541 _cleanup_(udev_unrefp
) struct udev
*udev
= NULL
;
543 const char *syspath
= "/devices/virtual/mem/null";
544 const char *subsystem
= NULL
;
547 test_setup_logging(LOG_INFO
);
549 r
= parse_args(argc
, argv
, &syspath
, &subsystem
);
553 assert_se(udev
= udev_new());
555 /* add sys path if needed */
556 if (!startswith(syspath
, "/sys"))
557 syspath
= strjoina("/sys/", syspath
);
559 test_device(udev
, syspath
);
560 test_device_devnum(udev
);
561 test_device_subsys_name(udev
, "block", "sda");
562 test_device_subsys_name(udev
, "subsystem", "pci");
563 test_device_subsys_name(udev
, "drivers", "scsi:sd");
564 test_device_subsys_name(udev
, "module", "printk");
565 test_device_parents(udev
, syspath
);
567 test_enumerate(udev
, subsystem
);
571 test_hwdb(udev
, "usb:v0D50p0011*");
576 test_util_replace_whitespace();
577 test_util_resolve_subsys_kernel();
584 DEFINE_MAIN_FUNCTION(run
);