]>
git.ipfire.org Git - thirdparty/systemd.git/blob - src/test/test-libudev.c
1 /* SPDX-License-Identifier: LGPL-2.1+ */
9 #include "alloc-util.h"
12 #include "libudev-list-internal.h"
13 #include "libudev-util.h"
15 #include "main-func.h"
16 #include "stdio-util.h"
17 #include "string-util.h"
20 static bool arg_monitor
= false;
22 static void print_device(struct udev_device
*device
) {
26 struct udev_list_entry
*list_entry
;
28 log_info("*** device: %p ***", device
);
29 str
= udev_device_get_action(device
);
31 log_info("action: '%s'", str
);
33 str
= udev_device_get_syspath(device
);
34 log_info("syspath: '%s'", str
);
36 str
= udev_device_get_sysname(device
);
37 log_info("sysname: '%s'", str
);
39 str
= udev_device_get_sysnum(device
);
41 log_info("sysnum: '%s'", str
);
43 str
= udev_device_get_devpath(device
);
44 log_info("devpath: '%s'", str
);
46 str
= udev_device_get_subsystem(device
);
48 log_info("subsystem: '%s'", str
);
50 str
= udev_device_get_devtype(device
);
52 log_info("devtype: '%s'", str
);
54 str
= udev_device_get_driver(device
);
56 log_info("driver: '%s'", str
);
58 str
= udev_device_get_devnode(device
);
60 log_info("devname: '%s'", str
);
62 devnum
= udev_device_get_devnum(device
);
63 if (major(devnum
) > 0)
64 log_info("devnum: %u:%u", major(devnum
), minor(devnum
));
67 udev_list_entry_foreach(list_entry
, udev_device_get_devlinks_list_entry(device
)) {
68 log_info("link: '%s'", udev_list_entry_get_name(list_entry
));
72 log_info("found %i links", count
);
75 udev_list_entry_foreach(list_entry
, udev_device_get_properties_list_entry(device
)) {
76 log_info("property: '%s=%s'",
77 udev_list_entry_get_name(list_entry
),
78 udev_list_entry_get_value(list_entry
));
82 log_info("found %i properties", count
);
84 str
= udev_device_get_property_value(device
, "MAJOR");
86 log_info("MAJOR: '%s'", str
);
88 str
= udev_device_get_sysattr_value(device
, "dev");
90 log_info("attr{dev}: '%s'", str
);
93 static void test_device(struct udev
*udev
, const char *syspath
) {
94 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
96 log_info("/* %s, device %s */", __func__
, syspath
);
97 device
= udev_device_new_from_syspath(udev
, syspath
);
101 log_warning_errno(errno
, "udev_device_new_from_syspath: %m");
104 static void test_device_parents(struct udev
*udev
, const char *syspath
) {
105 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
106 struct udev_device
*device_parent
;
108 log_info("/* %s, device %s */", __func__
, syspath
);
109 device
= udev_device_new_from_syspath(udev
, syspath
);
113 log_info("looking at parents");
114 device_parent
= device
;
116 print_device(device_parent
);
117 device_parent
= udev_device_get_parent(device_parent
);
118 } while (device_parent
!= NULL
);
120 log_info("looking at parents again");
121 device_parent
= device
;
123 print_device(device_parent
);
124 device_parent
= udev_device_get_parent(device_parent
);
125 } while (device_parent
!= NULL
);
128 static void test_device_devnum(struct udev
*udev
) {
129 dev_t devnum
= makedev(1, 3);
130 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
132 log_info("/* %s, device %d:%d */", __func__
, major(devnum
), minor(devnum
));
134 device
= udev_device_new_from_devnum(udev
, 'c', devnum
);
136 print_device(device
);
138 log_warning_errno(errno
, "udev_device_new_from_devnum: %m");
141 static void test_device_subsys_name(struct udev
*udev
, const char *subsys
, const char *dev
) {
142 _cleanup_(udev_device_unrefp
) struct udev_device
*device
;
144 log_info("looking up device: '%s:%s'", subsys
, dev
);
145 device
= udev_device_new_from_subsystem_sysname(udev
, subsys
, dev
);
147 log_warning_errno(errno
, "udev_device_new_from_subsystem_sysname: %m");
149 print_device(device
);
152 static int enumerate_print_list(struct udev_enumerate
*enumerate
) {
153 struct udev_list_entry
*list_entry
;
156 udev_list_entry_foreach(list_entry
, udev_enumerate_get_list_entry(enumerate
)) {
157 struct udev_device
*device
;
159 device
= udev_device_new_from_syspath(udev_enumerate_get_udev(enumerate
),
160 udev_list_entry_get_name(list_entry
));
162 log_info("device: '%s' (%s)",
163 udev_device_get_syspath(device
),
164 udev_device_get_subsystem(device
));
165 udev_device_unref(device
);
169 log_info("found %i devices", count
);
173 static void test_monitor(struct udev
*udev
) {
174 _cleanup_(udev_monitor_unrefp
) struct udev_monitor
*udev_monitor
;
175 _cleanup_close_
int fd_ep
;
177 struct epoll_event ep_udev
= {
181 .data
.fd
= STDIN_FILENO
,
184 log_info("/* %s */", __func__
);
186 fd_ep
= epoll_create1(EPOLL_CLOEXEC
);
187 assert_se(fd_ep
>= 0);
189 udev_monitor
= udev_monitor_new_from_netlink(udev
, "udev");
190 assert_se(udev_monitor
!= NULL
);
192 fd_udev
= udev_monitor_get_fd(udev_monitor
);
193 ep_udev
.data
.fd
= fd_udev
;
195 assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor
, "block", NULL
) >= 0);
196 assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor
, "tty", NULL
) >= 0);
197 assert_se(udev_monitor_filter_add_match_subsystem_devtype(udev_monitor
, "usb", "usb_device") >= 0);
199 assert_se(udev_monitor_enable_receiving(udev_monitor
) >= 0);
201 assert_se(epoll_ctl(fd_ep
, EPOLL_CTL_ADD
, fd_udev
, &ep_udev
) >= 0);
202 assert_se(epoll_ctl(fd_ep
, EPOLL_CTL_ADD
, STDIN_FILENO
, &ep_stdin
) >= 0);
206 struct epoll_event ev
[4];
207 struct udev_device
*device
;
210 printf("waiting for events from udev, press ENTER to exit\n");
211 fdcount
= epoll_wait(fd_ep
, ev
, ELEMENTSOF(ev
), -1);
212 printf("epoll fd count: %i\n", fdcount
);
214 for (i
= 0; i
< fdcount
; i
++) {
215 if (ev
[i
].data
.fd
== fd_udev
&& ev
[i
].events
& EPOLLIN
) {
216 device
= udev_monitor_receive_device(udev_monitor
);
217 if (device
== NULL
) {
218 printf("no device from socket\n");
221 print_device(device
);
222 udev_device_unref(device
);
223 } else if (ev
[i
].data
.fd
== STDIN_FILENO
&& ev
[i
].events
& EPOLLIN
) {
224 printf("exiting loop\n");
231 static void test_queue(struct udev
*udev
) {
232 struct udev_queue
*udev_queue
;
235 log_info("/* %s */", __func__
);
237 assert_se(udev_queue
= udev_queue_new(udev
));
239 empty
= udev_queue_get_queue_is_empty(udev_queue
);
240 log_info("queue is %s", empty
? "empty" : "not empty");
241 udev_queue_unref(udev_queue
);
244 static int test_enumerate(struct udev
*udev
, const char *subsystem
) {
245 struct udev_enumerate
*udev_enumerate
;
248 log_info("/* %s */", __func__
);
250 log_info("enumerate '%s'", subsystem
== NULL
? "<all>" : subsystem
);
251 udev_enumerate
= udev_enumerate_new(udev
);
254 udev_enumerate_add_match_subsystem(udev_enumerate
, subsystem
);
255 udev_enumerate_scan_devices(udev_enumerate
);
256 enumerate_print_list(udev_enumerate
);
257 udev_enumerate_unref(udev_enumerate
);
259 log_info("enumerate 'net' + duplicated scan + null + zero");
260 udev_enumerate
= udev_enumerate_new(udev
);
263 udev_enumerate_add_match_subsystem(udev_enumerate
, "net");
264 udev_enumerate_scan_devices(udev_enumerate
);
265 udev_enumerate_scan_devices(udev_enumerate
);
266 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
267 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
268 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
269 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
270 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
271 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
272 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/null");
273 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
274 udev_enumerate_add_syspath(udev_enumerate
, "/sys/class/mem/zero");
275 udev_enumerate_scan_devices(udev_enumerate
);
276 enumerate_print_list(udev_enumerate
);
277 udev_enumerate_unref(udev_enumerate
);
279 log_info("enumerate 'block'");
280 udev_enumerate
= udev_enumerate_new(udev
);
283 udev_enumerate_add_match_subsystem(udev_enumerate
,"block");
284 r
= udev_enumerate_add_match_is_initialized(udev_enumerate
);
286 udev_enumerate_unref(udev_enumerate
);
289 udev_enumerate_scan_devices(udev_enumerate
);
290 enumerate_print_list(udev_enumerate
);
291 udev_enumerate_unref(udev_enumerate
);
293 log_info("enumerate 'not block'");
294 udev_enumerate
= udev_enumerate_new(udev
);
297 udev_enumerate_add_nomatch_subsystem(udev_enumerate
, "block");
298 udev_enumerate_scan_devices(udev_enumerate
);
299 enumerate_print_list(udev_enumerate
);
300 udev_enumerate_unref(udev_enumerate
);
302 log_info("enumerate 'pci, mem, vc'");
303 udev_enumerate
= udev_enumerate_new(udev
);
306 udev_enumerate_add_match_subsystem(udev_enumerate
, "pci");
307 udev_enumerate_add_match_subsystem(udev_enumerate
, "mem");
308 udev_enumerate_add_match_subsystem(udev_enumerate
, "vc");
309 udev_enumerate_scan_devices(udev_enumerate
);
310 enumerate_print_list(udev_enumerate
);
311 udev_enumerate_unref(udev_enumerate
);
313 log_info("enumerate 'subsystem'");
314 udev_enumerate
= udev_enumerate_new(udev
);
317 udev_enumerate_scan_subsystems(udev_enumerate
);
318 enumerate_print_list(udev_enumerate
);
319 udev_enumerate_unref(udev_enumerate
);
321 log_info("enumerate 'property IF_FS_*=filesystem'");
322 udev_enumerate
= udev_enumerate_new(udev
);
325 udev_enumerate_add_match_property(udev_enumerate
, "ID_FS*", "filesystem");
326 udev_enumerate_scan_devices(udev_enumerate
);
327 enumerate_print_list(udev_enumerate
);
328 udev_enumerate_unref(udev_enumerate
);
332 static void test_hwdb(struct udev
*udev
, const char *modalias
) {
333 struct udev_hwdb
*hwdb
;
334 struct udev_list_entry
*entry
;
336 log_info("/* %s */", __func__
);
338 hwdb
= udev_hwdb_new(udev
);
340 log_warning_errno(errno
, "Failed to open hwdb: %m");
342 udev_list_entry_foreach(entry
, udev_hwdb_get_properties_list_entry(hwdb
, modalias
, 0))
343 log_info("'%s'='%s'", udev_list_entry_get_name(entry
), udev_list_entry_get_value(entry
));
345 hwdb
= udev_hwdb_unref(hwdb
);
346 assert_se(hwdb
== NULL
);
349 static void test_util_replace_whitespace_one_len(const char *str
, size_t len
, const char *expected
) {
350 _cleanup_free_
char *result
= NULL
;
353 result
= new(char, len
+ 1);
355 r
= util_replace_whitespace(str
, result
, len
);
356 assert_se((size_t) r
== strlen(expected
));
357 assert_se(streq(result
, expected
));
360 static void test_util_replace_whitespace_one(const char *str
, const char *expected
) {
361 test_util_replace_whitespace_one_len(str
, strlen(str
), expected
);
364 static void test_util_replace_whitespace(void) {
365 log_info("/* %s */", __func__
);
367 test_util_replace_whitespace_one("hogehoge", "hogehoge");
368 test_util_replace_whitespace_one("hoge hoge", "hoge_hoge");
369 test_util_replace_whitespace_one(" hoge hoge ", "hoge_hoge");
370 test_util_replace_whitespace_one(" ", "");
371 test_util_replace_whitespace_one("hoge ", "hoge");
373 test_util_replace_whitespace_one_len("hoge hoge ", 9, "hoge_hoge");
374 test_util_replace_whitespace_one_len("hoge hoge ", 8, "hoge_hog");
375 test_util_replace_whitespace_one_len("hoge hoge ", 7, "hoge_ho");
376 test_util_replace_whitespace_one_len("hoge hoge ", 6, "hoge_h");
377 test_util_replace_whitespace_one_len("hoge hoge ", 5, "hoge");
378 test_util_replace_whitespace_one_len("hoge hoge ", 4, "hoge");
379 test_util_replace_whitespace_one_len("hoge hoge ", 3, "hog");
380 test_util_replace_whitespace_one_len("hoge hoge ", 2, "ho");
381 test_util_replace_whitespace_one_len("hoge hoge ", 1, "h");
382 test_util_replace_whitespace_one_len("hoge hoge ", 0, "");
384 test_util_replace_whitespace_one_len(" hoge hoge ", 16, "hoge_hoge");
385 test_util_replace_whitespace_one_len(" hoge hoge ", 15, "hoge_hoge");
386 test_util_replace_whitespace_one_len(" hoge hoge ", 14, "hoge_hog");
387 test_util_replace_whitespace_one_len(" hoge hoge ", 13, "hoge_ho");
388 test_util_replace_whitespace_one_len(" hoge hoge ", 12, "hoge_h");
389 test_util_replace_whitespace_one_len(" hoge hoge ", 11, "hoge");
390 test_util_replace_whitespace_one_len(" hoge hoge ", 10, "hoge");
391 test_util_replace_whitespace_one_len(" hoge hoge ", 9, "hoge");
392 test_util_replace_whitespace_one_len(" hoge hoge ", 8, "hoge");
393 test_util_replace_whitespace_one_len(" hoge hoge ", 7, "hog");
394 test_util_replace_whitespace_one_len(" hoge hoge ", 6, "ho");
395 test_util_replace_whitespace_one_len(" hoge hoge ", 5, "h");
396 test_util_replace_whitespace_one_len(" hoge hoge ", 4, "");
397 test_util_replace_whitespace_one_len(" hoge hoge ", 3, "");
398 test_util_replace_whitespace_one_len(" hoge hoge ", 2, "");
399 test_util_replace_whitespace_one_len(" hoge hoge ", 1, "");
400 test_util_replace_whitespace_one_len(" hoge hoge ", 0, "");
403 static void test_util_resolve_subsys_kernel_one(const char *str
, bool read_value
, int retval
, const char *expected
) {
404 char result
[UTIL_PATH_SIZE
] = "";
407 r
= util_resolve_subsys_kernel(str
, result
, sizeof(result
), read_value
);
408 log_info("\"%s\" → expect: \"%s\", %d, actual: \"%s\", %d", str
, strnull(expected
), retval
, result
, r
);
409 assert_se(r
== retval
);
411 assert_se(streq(result
, expected
));
414 static void test_util_resolve_subsys_kernel(void) {
415 log_info("/* %s */", __func__
);
417 test_util_resolve_subsys_kernel_one("hoge", false, -EINVAL
, NULL
);
418 test_util_resolve_subsys_kernel_one("[hoge", false, -EINVAL
, NULL
);
419 test_util_resolve_subsys_kernel_one("[hoge/foo", false, -EINVAL
, NULL
);
420 test_util_resolve_subsys_kernel_one("[hoge/]", false, -ENODEV
, NULL
);
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]/", false, 0, "/sys/devices/virtual/net/lo");
424 test_util_resolve_subsys_kernel_one("[net/lo]hoge", false, 0, "/sys/devices/virtual/net/lo/hoge");
425 test_util_resolve_subsys_kernel_one("[net/lo]/hoge", false, 0, "/sys/devices/virtual/net/lo/hoge");
427 test_util_resolve_subsys_kernel_one("[net/lo]", true, -EINVAL
, NULL
);
428 test_util_resolve_subsys_kernel_one("[net/lo]/", true, -EINVAL
, NULL
);
429 test_util_resolve_subsys_kernel_one("[net/lo]hoge", true, 0, "");
430 test_util_resolve_subsys_kernel_one("[net/lo]/hoge", true, 0, "");
431 test_util_resolve_subsys_kernel_one("[net/lo]address", true, 0, "00:00:00:00:00:00");
432 test_util_resolve_subsys_kernel_one("[net/lo]/address", true, 0, "00:00:00:00:00:00");
435 static void test_list(void) {
436 struct udev_list list
= {};
437 struct udev_list_entry
*e
;
440 udev_list_init(&list
, false);
441 assert_se(!udev_list_get_entry(&list
));
443 /* unique == false */
444 udev_list_init(&list
, 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 udev_list_cleanup(&list
);
468 udev_list_init(&list
, 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"));
490 udev_list_cleanup(&list
);
493 static int parse_args(int argc
, char *argv
[], const char **syspath
, const char **subsystem
) {
494 static const struct option options
[] = {
495 { "syspath", required_argument
, NULL
, 'p' },
496 { "subsystem", required_argument
, NULL
, 's' },
497 { "debug", no_argument
, NULL
, 'd' },
498 { "help", no_argument
, NULL
, 'h' },
499 { "version", no_argument
, NULL
, 'V' },
500 { "monitor", no_argument
, NULL
, 'm' },
505 while ((c
= getopt_long(argc
, argv
, "p:s:dhVm", options
, NULL
)) >= 0)
516 log_set_max_level(LOG_DEBUG
);
520 printf("--debug --syspath= --subsystem= --help\n");
524 printf("%s\n", GIT_VERSION
);
535 assert_not_reached("Unhandled option code.");
541 static int run(int argc
, char *argv
[]) {
542 _cleanup_(udev_unrefp
) struct udev
*udev
= NULL
;
544 const char *syspath
= "/devices/virtual/mem/null";
545 const char *subsystem
= NULL
;
548 test_setup_logging(LOG_INFO
);
550 r
= parse_args(argc
, argv
, &syspath
, &subsystem
);
554 assert_se(udev
= udev_new());
556 /* add sys path if needed */
557 if (!startswith(syspath
, "/sys"))
558 syspath
= strjoina("/sys/", syspath
);
560 test_device(udev
, syspath
);
561 test_device_devnum(udev
);
562 test_device_subsys_name(udev
, "block", "sda");
563 test_device_subsys_name(udev
, "subsystem", "pci");
564 test_device_subsys_name(udev
, "drivers", "scsi:sd");
565 test_device_subsys_name(udev
, "module", "printk");
566 test_device_parents(udev
, syspath
);
568 test_enumerate(udev
, subsystem
);
572 test_hwdb(udev
, "usb:v0D50p0011*");
577 test_util_replace_whitespace();
578 test_util_resolve_subsys_kernel();
585 DEFINE_MAIN_FUNCTION(run
);