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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
fd38203a | 2 | |
d6bfc3d8 LP |
3 | #if HAVE_PIDFD_OPEN |
4 | #include <sys/pidfd.h> | |
5 | #endif | |
fe993888 | 6 | #include <sys/wait.h> |
2eeff0f4 | 7 | #include <unistd.h> |
fe993888 | 8 | |
fd38203a | 9 | #include "sd-event.h" |
3ffd4af2 | 10 | |
41e09d62 | 11 | #include "alloc-util.h" |
45a68ed3 | 12 | #include "exec-util.h" |
3ffd4af2 | 13 | #include "fd-util.h" |
41e09d62 | 14 | #include "fs-util.h" |
fd38203a | 15 | #include "log.h" |
0c0cdb06 | 16 | #include "macro.h" |
3ecb3bdc | 17 | #include "missing_syscall.h" |
41e09d62 | 18 | #include "parse-util.h" |
657ee2d8 | 19 | #include "path-util.h" |
41e09d62 | 20 | #include "process-util.h" |
c14e57ba | 21 | #include "random-util.h" |
41e09d62 | 22 | #include "rm-rf.h" |
24882e06 | 23 | #include "signal-util.h" |
41e09d62 LP |
24 | #include "stdio-util.h" |
25 | #include "string-util.h" | |
6d7c4033 | 26 | #include "tests.h" |
e4de7287 | 27 | #include "tmpfile-util.h" |
fd38203a LP |
28 | |
29 | static int prepare_handler(sd_event_source *s, void *userdata) { | |
30 | log_info("preparing %c", PTR_TO_INT(userdata)); | |
31 | return 1; | |
32 | } | |
33 | ||
12179984 | 34 | static bool got_a, got_b, got_c, got_unref; |
9ec9694c | 35 | static unsigned got_d; |
fd38203a | 36 | |
12179984 LP |
37 | static int unref_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
38 | sd_event_source_unref(s); | |
39 | got_unref = true; | |
40 | return 0; | |
41 | } | |
42 | ||
fd38203a LP |
43 | static int io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
44 | ||
45 | log_info("got IO on %c", PTR_TO_INT(userdata)); | |
46 | ||
47 | if (userdata == INT_TO_PTR('a')) { | |
baf76283 | 48 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0); |
fd38203a LP |
49 | assert_se(!got_a); |
50 | got_a = true; | |
51 | } else if (userdata == INT_TO_PTR('b')) { | |
52 | assert_se(!got_b); | |
53 | got_b = true; | |
9ec9694c DS |
54 | } else if (userdata == INT_TO_PTR('d')) { |
55 | got_d++; | |
56 | if (got_d < 2) | |
57 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0); | |
58 | else | |
59 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0); | |
fd38203a | 60 | } else |
04499a70 | 61 | assert_not_reached(); |
fd38203a LP |
62 | |
63 | return 1; | |
64 | } | |
65 | ||
66 | static int child_handler(sd_event_source *s, const siginfo_t *si, void *userdata) { | |
67 | ||
0c0cdb06 RC |
68 | assert_se(s); |
69 | assert_se(si); | |
fd38203a | 70 | |
3ecb3bdc LP |
71 | assert_se(si->si_uid == getuid()); |
72 | assert_se(si->si_signo == SIGCHLD); | |
73 | assert_se(si->si_code == CLD_EXITED); | |
74 | assert_se(si->si_status == 78); | |
75 | ||
fd38203a LP |
76 | log_info("got child on %c", PTR_TO_INT(userdata)); |
77 | ||
0c0cdb06 | 78 | assert_se(userdata == INT_TO_PTR('f')); |
fd38203a | 79 | |
6203e07a | 80 | assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0); |
fd38203a LP |
81 | sd_event_source_unref(s); |
82 | ||
83 | return 1; | |
84 | } | |
85 | ||
86 | static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
39883f62 | 87 | sd_event_source *p = NULL; |
fd38203a | 88 | pid_t pid; |
3ecb3bdc | 89 | siginfo_t plain_si; |
fd38203a | 90 | |
0c0cdb06 RC |
91 | assert_se(s); |
92 | assert_se(si); | |
fd38203a LP |
93 | |
94 | log_info("got signal on %c", PTR_TO_INT(userdata)); | |
95 | ||
0c0cdb06 | 96 | assert_se(userdata == INT_TO_PTR('e')); |
fd38203a | 97 | |
db7136ec | 98 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, SIGUSR2) >= 0); |
fd38203a LP |
99 | |
100 | pid = fork(); | |
101 | assert_se(pid >= 0); | |
102 | ||
3ecb3bdc LP |
103 | if (pid == 0) { |
104 | sigset_t ss; | |
105 | ||
106 | assert_se(sigemptyset(&ss) >= 0); | |
107 | assert_se(sigaddset(&ss, SIGUSR2) >= 0); | |
108 | ||
109 | zero(plain_si); | |
110 | assert_se(sigwaitinfo(&ss, &plain_si) >= 0); | |
111 | ||
112 | assert_se(plain_si.si_signo == SIGUSR2); | |
113 | assert_se(plain_si.si_value.sival_int == 4711); | |
114 | ||
115 | _exit(78); | |
116 | } | |
fd38203a | 117 | |
151b9b96 | 118 | assert_se(sd_event_add_child(sd_event_source_get_event(s), &p, pid, WEXITED, child_handler, INT_TO_PTR('f')) >= 0); |
baf76283 | 119 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); |
3ecb3bdc LP |
120 | assert_se(sd_event_source_set_child_process_own(p, true) >= 0); |
121 | ||
122 | /* We can't use structured initialization here, since the structure contains various unions and these | |
123 | * fields lie in overlapping (carefully aligned) unions that LLVM is allergic to allow assignments | |
124 | * to */ | |
125 | zero(plain_si); | |
126 | plain_si.si_signo = SIGUSR2; | |
127 | plain_si.si_code = SI_QUEUE; | |
19b761a0 | 128 | plain_si.si_pid = getpid_cached(); |
3ecb3bdc LP |
129 | plain_si.si_uid = getuid(); |
130 | plain_si.si_value.sival_int = 4711; | |
131 | ||
132 | assert_se(sd_event_source_send_child_signal(p, SIGUSR2, &plain_si, 0) >= 0); | |
fd38203a LP |
133 | |
134 | sd_event_source_unref(s); | |
135 | ||
136 | return 1; | |
137 | } | |
138 | ||
139 | static int defer_handler(sd_event_source *s, void *userdata) { | |
39883f62 | 140 | sd_event_source *p = NULL; |
fd38203a | 141 | |
0c0cdb06 | 142 | assert_se(s); |
fd38203a LP |
143 | |
144 | log_info("got defer on %c", PTR_TO_INT(userdata)); | |
145 | ||
0c0cdb06 | 146 | assert_se(userdata == INT_TO_PTR('d')); |
fd38203a | 147 | |
db7136ec | 148 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1) >= 0); |
72c0a2c2 | 149 | |
151b9b96 | 150 | assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0); |
baf76283 | 151 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); |
fd38203a LP |
152 | raise(SIGUSR1); |
153 | ||
154 | sd_event_source_unref(s); | |
155 | ||
156 | return 1; | |
157 | } | |
158 | ||
3ecb3bdc | 159 | static bool do_quit; |
fd38203a LP |
160 | |
161 | static int time_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
162 | log_info("got timer on %c", PTR_TO_INT(userdata)); | |
163 | ||
164 | if (userdata == INT_TO_PTR('c')) { | |
165 | ||
166 | if (do_quit) { | |
167 | sd_event_source *p; | |
168 | ||
151b9b96 | 169 | assert_se(sd_event_add_defer(sd_event_source_get_event(s), &p, defer_handler, INT_TO_PTR('d')) >= 0); |
baf76283 | 170 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); |
fd38203a | 171 | } else { |
0c0cdb06 | 172 | assert_se(!got_c); |
fd38203a LP |
173 | got_c = true; |
174 | } | |
175 | } else | |
04499a70 | 176 | assert_not_reached(); |
fd38203a LP |
177 | |
178 | return 2; | |
179 | } | |
180 | ||
6203e07a | 181 | static bool got_exit = false; |
da7e457c | 182 | |
6203e07a | 183 | static int exit_handler(sd_event_source *s, void *userdata) { |
da7e457c LP |
184 | log_info("got quit handler on %c", PTR_TO_INT(userdata)); |
185 | ||
6203e07a | 186 | got_exit = true; |
da7e457c LP |
187 | |
188 | return 3; | |
189 | } | |
190 | ||
509a07ad EV |
191 | static bool got_post = false; |
192 | ||
193 | static int post_handler(sd_event_source *s, void *userdata) { | |
194 | log_info("got post handler"); | |
195 | ||
196 | got_post = true; | |
197 | ||
198 | return 2; | |
199 | } | |
200 | ||
68da8adf | 201 | static void test_basic_one(bool with_pidfd) { |
fd38203a | 202 | sd_event *e = NULL; |
12179984 | 203 | sd_event_source *w = NULL, *x = NULL, *y = NULL, *z = NULL, *q = NULL, *t = NULL; |
fd38203a | 204 | static const char ch = 'x'; |
71136404 LP |
205 | int a[2] = EBADF_PAIR, b[2] = EBADF_PAIR, |
206 | d[2] = EBADF_PAIR, k[2] = EBADF_PAIR; | |
591df2b5 | 207 | uint64_t event_now; |
6680b8d1 | 208 | int64_t priority; |
fd38203a | 209 | |
7fe11e84 YW |
210 | log_info("/* %s(pidfd=%s) */", __func__, yes_no(with_pidfd)); |
211 | ||
3ecb3bdc LP |
212 | assert_se(setenv("SYSTEMD_PIDFD", yes_no(with_pidfd), 1) >= 0); |
213 | ||
fd38203a LP |
214 | assert_se(pipe(a) >= 0); |
215 | assert_se(pipe(b) >= 0); | |
9ec9694c | 216 | assert_se(pipe(d) >= 0); |
12179984 | 217 | assert_se(pipe(k) >= 0); |
fd38203a | 218 | |
afc6adb5 | 219 | assert_se(sd_event_default(&e) >= 0); |
591df2b5 | 220 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0); |
fd38203a | 221 | |
cde93897 LP |
222 | assert_se(sd_event_set_watchdog(e, true) >= 0); |
223 | ||
12179984 LP |
224 | /* Test whether we cleanly can destroy an io event source from its own handler */ |
225 | got_unref = false; | |
151b9b96 | 226 | assert_se(sd_event_add_io(e, &t, k[0], EPOLLIN, unref_handler, NULL) >= 0); |
12179984 | 227 | assert_se(write(k[1], &ch, 1) == 1); |
f5fbe71d | 228 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
12179984 LP |
229 | assert_se(got_unref); |
230 | ||
9ec9694c DS |
231 | got_a = false, got_b = false, got_c = false, got_d = 0; |
232 | ||
254d1313 | 233 | /* Add a oneshot handler, trigger it, reenable it, and trigger it again. */ |
151b9b96 | 234 | assert_se(sd_event_add_io(e, &w, d[0], EPOLLIN, io_handler, INT_TO_PTR('d')) >= 0); |
9ec9694c DS |
235 | assert_se(sd_event_source_set_enabled(w, SD_EVENT_ONESHOT) >= 0); |
236 | assert_se(write(d[1], &ch, 1) >= 0); | |
f5fbe71d | 237 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
9ec9694c DS |
238 | assert_se(got_d == 1); |
239 | assert_se(write(d[1], &ch, 1) >= 0); | |
f5fbe71d | 240 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
9ec9694c | 241 | assert_se(got_d == 2); |
fd38203a | 242 | |
151b9b96 LP |
243 | assert_se(sd_event_add_io(e, &x, a[0], EPOLLIN, io_handler, INT_TO_PTR('a')) >= 0); |
244 | assert_se(sd_event_add_io(e, &y, b[0], EPOLLIN, io_handler, INT_TO_PTR('b')) >= 0); | |
3ecb3bdc LP |
245 | |
246 | do_quit = false; | |
6a0f1f6d | 247 | assert_se(sd_event_add_time(e, &z, CLOCK_MONOTONIC, 0, 0, time_handler, INT_TO_PTR('c')) >= 0); |
151b9b96 | 248 | assert_se(sd_event_add_exit(e, &q, exit_handler, INT_TO_PTR('g')) >= 0); |
fd38203a LP |
249 | |
250 | assert_se(sd_event_source_set_priority(x, 99) >= 0); | |
6680b8d1 ME |
251 | assert_se(sd_event_source_get_priority(x, &priority) >= 0); |
252 | assert_se(priority == 99); | |
baf76283 | 253 | assert_se(sd_event_source_set_enabled(y, SD_EVENT_ONESHOT) >= 0); |
fd38203a LP |
254 | assert_se(sd_event_source_set_prepare(x, prepare_handler) >= 0); |
255 | assert_se(sd_event_source_set_priority(z, 50) >= 0); | |
baf76283 | 256 | assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0); |
fd38203a | 257 | assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0); |
a71fe8b8 LP |
258 | |
259 | /* Test for floating event sources */ | |
db7136ec | 260 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1) >= 0); |
a71fe8b8 | 261 | assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0); |
fd38203a LP |
262 | |
263 | assert_se(write(a[1], &ch, 1) >= 0); | |
264 | assert_se(write(b[1], &ch, 1) >= 0); | |
265 | ||
266 | assert_se(!got_a && !got_b && !got_c); | |
267 | ||
f5fbe71d | 268 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
fd38203a LP |
269 | |
270 | assert_se(!got_a && got_b && !got_c); | |
271 | ||
f5fbe71d | 272 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
fd38203a LP |
273 | |
274 | assert_se(!got_a && got_b && got_c); | |
275 | ||
f5fbe71d | 276 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
fd38203a LP |
277 | |
278 | assert_se(got_a && got_b && got_c); | |
279 | ||
280 | sd_event_source_unref(x); | |
281 | sd_event_source_unref(y); | |
282 | ||
283 | do_quit = true; | |
509a07ad | 284 | assert_se(sd_event_add_post(e, NULL, post_handler, NULL) >= 0); |
591df2b5 EV |
285 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0); |
286 | assert_se(sd_event_source_set_time(z, event_now + 200 * USEC_PER_MSEC) >= 0); | |
baf76283 | 287 | assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0); |
fd38203a LP |
288 | |
289 | assert_se(sd_event_loop(e) >= 0); | |
509a07ad | 290 | assert_se(got_post); |
5657c75f | 291 | assert_se(got_exit); |
fd38203a LP |
292 | |
293 | sd_event_source_unref(z); | |
da7e457c | 294 | sd_event_source_unref(q); |
fd38203a | 295 | |
d5e4ec5b LP |
296 | sd_event_source_unref(w); |
297 | ||
fd38203a LP |
298 | sd_event_unref(e); |
299 | ||
3d94f76c LP |
300 | safe_close_pair(a); |
301 | safe_close_pair(b); | |
302 | safe_close_pair(d); | |
303 | safe_close_pair(k); | |
3ecb3bdc LP |
304 | |
305 | assert_se(unsetenv("SYSTEMD_PIDFD") >= 0); | |
9da4cb2b LP |
306 | } |
307 | ||
68da8adf JJ |
308 | TEST(basic) { |
309 | test_basic_one(true); /* test with pidfd */ | |
310 | test_basic_one(false); /* test without pidfd */ | |
311 | } | |
312 | ||
313 | TEST(sd_event_now) { | |
2c86ba5a ZJS |
314 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; |
315 | uint64_t event_now; | |
316 | ||
317 | assert_se(sd_event_new(&e) >= 0); | |
318 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0); | |
319 | assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) > 0); | |
320 | assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) > 0); | |
ba4e0427 LP |
321 | assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) > 0); |
322 | assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) > 0); | |
2c86ba5a ZJS |
323 | assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP); |
324 | assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP); | |
325 | ||
326 | assert_se(sd_event_run(e, 0) == 0); | |
327 | ||
328 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0); | |
329 | assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) == 0); | |
330 | assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) == 0); | |
ba4e0427 LP |
331 | assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) == 0); |
332 | assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) == 0); | |
2c86ba5a ZJS |
333 | assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP); |
334 | assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP); | |
335 | } | |
336 | ||
9da4cb2b LP |
337 | static int last_rtqueue_sigval = 0; |
338 | static int n_rtqueue = 0; | |
339 | ||
340 | static int rtqueue_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
341 | last_rtqueue_sigval = si->ssi_int; | |
313cefa1 | 342 | n_rtqueue++; |
9da4cb2b LP |
343 | return 0; |
344 | } | |
345 | ||
68da8adf | 346 | TEST(rtqueue) { |
9da4cb2b LP |
347 | sd_event_source *u = NULL, *v = NULL, *s = NULL; |
348 | sd_event *e = NULL; | |
349 | ||
350 | assert_se(sd_event_default(&e) >= 0); | |
351 | ||
db7136ec | 352 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2) >= 0); |
9da4cb2b LP |
353 | assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0); |
354 | assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0); | |
355 | assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0); | |
356 | ||
357 | assert_se(sd_event_source_set_priority(v, -10) >= 0); | |
358 | ||
19500112 YW |
359 | assert_se(sigqueue(getpid_cached(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0); |
360 | assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0); | |
361 | assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0); | |
362 | assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0); | |
363 | assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0); | |
9da4cb2b LP |
364 | |
365 | assert_se(n_rtqueue == 0); | |
366 | assert_se(last_rtqueue_sigval == 0); | |
367 | ||
f5fbe71d | 368 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
9da4cb2b LP |
369 | assert_se(n_rtqueue == 1); |
370 | assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */ | |
371 | ||
f5fbe71d | 372 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
9da4cb2b LP |
373 | assert_se(n_rtqueue == 2); |
374 | assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */ | |
375 | ||
f5fbe71d | 376 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
9da4cb2b LP |
377 | assert_se(n_rtqueue == 3); |
378 | assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */ | |
379 | ||
f5fbe71d | 380 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
9da4cb2b LP |
381 | assert_se(n_rtqueue == 4); |
382 | assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */ | |
383 | ||
384 | assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */ | |
385 | assert_se(n_rtqueue == 4); | |
386 | assert_se(last_rtqueue_sigval == 1); | |
387 | ||
388 | sd_event_source_unref(u); | |
389 | sd_event_source_unref(v); | |
390 | sd_event_source_unref(s); | |
391 | ||
392 | sd_event_unref(e); | |
393 | } | |
394 | ||
41e09d62 LP |
395 | #define CREATE_EVENTS_MAX (70000U) |
396 | ||
397 | struct inotify_context { | |
398 | bool delete_self_handler_called; | |
399 | unsigned create_called[CREATE_EVENTS_MAX]; | |
400 | unsigned create_overflow; | |
401 | unsigned n_create_events; | |
4a7cd0ca | 402 | const char *path; |
41e09d62 LP |
403 | }; |
404 | ||
405 | static void maybe_exit(sd_event_source *s, struct inotify_context *c) { | |
406 | unsigned n; | |
407 | ||
f21b863e YW |
408 | assert_se(s); |
409 | assert_se(c); | |
41e09d62 LP |
410 | |
411 | if (!c->delete_self_handler_called) | |
412 | return; | |
413 | ||
414 | for (n = 0; n < 3; n++) { | |
415 | unsigned i; | |
416 | ||
417 | if (c->create_overflow & (1U << n)) | |
418 | continue; | |
419 | ||
420 | for (i = 0; i < c->n_create_events; i++) | |
421 | if (!(c->create_called[i] & (1U << n))) | |
422 | return; | |
423 | } | |
424 | ||
425 | sd_event_exit(sd_event_source_get_event(s), 0); | |
426 | } | |
427 | ||
428 | static int inotify_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { | |
4a7cd0ca YW |
429 | struct inotify_context *c = ASSERT_PTR(userdata); |
430 | const char *path, *description; | |
41e09d62 LP |
431 | unsigned bit, n; |
432 | ||
4a7cd0ca YW |
433 | assert_se(sd_event_source_get_inotify_path(s, &path) >= 0); |
434 | ||
41e09d62 LP |
435 | assert_se(sd_event_source_get_description(s, &description) >= 0); |
436 | assert_se(safe_atou(description, &n) >= 0); | |
437 | ||
438 | assert_se(n <= 3); | |
439 | bit = 1U << n; | |
440 | ||
441 | if (ev->mask & IN_Q_OVERFLOW) { | |
4a7cd0ca | 442 | log_info("inotify-handler for %s <%s>: overflow", path, description); |
41e09d62 LP |
443 | c->create_overflow |= bit; |
444 | } else if (ev->mask & IN_CREATE) { | |
4a7cd0ca | 445 | assert_se(path_equal_or_inode_same(path, c->path, 0)); |
834f3ba1 | 446 | if (streq(ev->name, "sub")) |
4a7cd0ca | 447 | log_debug("inotify-handler for %s <%s>: create on %s", path, description, ev->name); |
834f3ba1 YW |
448 | else { |
449 | unsigned i; | |
41e09d62 | 450 | |
41e09d62 | 451 | assert_se(safe_atou(ev->name, &i) >= 0); |
41e09d62 LP |
452 | assert_se(i < c->n_create_events); |
453 | c->create_called[i] |= bit; | |
454 | } | |
455 | } else if (ev->mask & IN_DELETE) { | |
4a7cd0ca | 456 | log_info("inotify-handler for %s <%s>: delete of %s", path, description, ev->name); |
41e09d62 LP |
457 | assert_se(streq(ev->name, "sub")); |
458 | } else | |
04499a70 | 459 | assert_not_reached(); |
41e09d62 LP |
460 | |
461 | maybe_exit(s, c); | |
462 | return 1; | |
463 | } | |
464 | ||
465 | static int delete_self_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { | |
4a7cd0ca YW |
466 | struct inotify_context *c = ASSERT_PTR(userdata); |
467 | const char *path; | |
468 | ||
469 | assert_se(sd_event_source_get_inotify_path(s, &path) >= 0); | |
41e09d62 LP |
470 | |
471 | if (ev->mask & IN_Q_OVERFLOW) { | |
4a7cd0ca | 472 | log_info("delete-self-handler for %s: overflow", path); |
41e09d62 LP |
473 | c->delete_self_handler_called = true; |
474 | } else if (ev->mask & IN_DELETE_SELF) { | |
4a7cd0ca | 475 | log_info("delete-self-handler for %s: delete-self", path); |
41e09d62 LP |
476 | c->delete_self_handler_called = true; |
477 | } else if (ev->mask & IN_IGNORED) { | |
4a7cd0ca | 478 | log_info("delete-self-handler for %s: ignore", path); |
41e09d62 | 479 | } else |
04499a70 | 480 | assert_not_reached(); |
41e09d62 LP |
481 | |
482 | maybe_exit(s, c); | |
483 | return 1; | |
484 | } | |
485 | ||
68da8adf | 486 | static void test_inotify_one(unsigned n_create_events) { |
41e09d62 LP |
487 | _cleanup_(rm_rf_physical_and_freep) char *p = NULL; |
488 | sd_event_source *a = NULL, *b = NULL, *c = NULL, *d = NULL; | |
489 | struct inotify_context context = { | |
490 | .n_create_events = n_create_events, | |
491 | }; | |
492 | sd_event *e = NULL; | |
4a7cd0ca | 493 | const char *q, *pp; |
41e09d62 LP |
494 | unsigned i; |
495 | ||
7fe11e84 YW |
496 | log_info("/* %s(%u) */", __func__, n_create_events); |
497 | ||
41e09d62 LP |
498 | assert_se(sd_event_default(&e) >= 0); |
499 | ||
500 | assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &p) >= 0); | |
4a7cd0ca | 501 | context.path = p; |
41e09d62 LP |
502 | |
503 | assert_se(sd_event_add_inotify(e, &a, p, IN_CREATE|IN_ONLYDIR, inotify_handler, &context) >= 0); | |
504 | assert_se(sd_event_add_inotify(e, &b, p, IN_CREATE|IN_DELETE|IN_DONT_FOLLOW, inotify_handler, &context) >= 0); | |
505 | assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_IDLE) >= 0); | |
506 | assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_NORMAL) >= 0); | |
507 | assert_se(sd_event_add_inotify(e, &c, p, IN_CREATE|IN_DELETE|IN_EXCL_UNLINK, inotify_handler, &context) >= 0); | |
508 | assert_se(sd_event_source_set_priority(c, SD_EVENT_PRIORITY_IDLE) >= 0); | |
509 | ||
510 | assert_se(sd_event_source_set_description(a, "0") >= 0); | |
511 | assert_se(sd_event_source_set_description(b, "1") >= 0); | |
512 | assert_se(sd_event_source_set_description(c, "2") >= 0); | |
513 | ||
74c4231c YW |
514 | assert_se(sd_event_source_get_inotify_path(a, &pp) >= 0); |
515 | assert_se(path_equal_or_inode_same(pp, p, 0)); | |
74c4231c YW |
516 | assert_se(sd_event_source_get_inotify_path(b, &pp) >= 0); |
517 | assert_se(path_equal_or_inode_same(pp, p, 0)); | |
74c4231c YW |
518 | assert_se(sd_event_source_get_inotify_path(b, &pp) >= 0); |
519 | assert_se(path_equal_or_inode_same(pp, p, 0)); | |
74c4231c | 520 | |
41e09d62 LP |
521 | q = strjoina(p, "/sub"); |
522 | assert_se(touch(q) >= 0); | |
523 | assert_se(sd_event_add_inotify(e, &d, q, IN_DELETE_SELF, delete_self_handler, &context) >= 0); | |
524 | ||
525 | for (i = 0; i < n_create_events; i++) { | |
526 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
3d41b6b8 | 527 | _cleanup_free_ char *z = NULL; |
41e09d62 LP |
528 | |
529 | xsprintf(buf, "%u", i); | |
657ee2d8 | 530 | assert_se(z = path_join(p, buf)); |
41e09d62 LP |
531 | |
532 | assert_se(touch(z) >= 0); | |
533 | } | |
534 | ||
535 | assert_se(unlink(q) >= 0); | |
536 | ||
537 | assert_se(sd_event_loop(e) >= 0); | |
538 | ||
539 | sd_event_source_unref(a); | |
540 | sd_event_source_unref(b); | |
541 | sd_event_source_unref(c); | |
542 | sd_event_source_unref(d); | |
543 | ||
544 | sd_event_unref(e); | |
545 | } | |
546 | ||
68da8adf JJ |
547 | TEST(inotify) { |
548 | test_inotify_one(100); /* should work without overflow */ | |
549 | test_inotify_one(33000); /* should trigger a q overflow */ | |
550 | } | |
551 | ||
3ecb3bdc LP |
552 | static int pidfd_handler(sd_event_source *s, const siginfo_t *si, void *userdata) { |
553 | assert_se(s); | |
554 | assert_se(si); | |
555 | ||
556 | assert_se(si->si_uid == getuid()); | |
557 | assert_se(si->si_signo == SIGCHLD); | |
558 | assert_se(si->si_code == CLD_EXITED); | |
559 | assert_se(si->si_status == 66); | |
560 | ||
561 | log_info("got pidfd on %c", PTR_TO_INT(userdata)); | |
562 | ||
563 | assert_se(userdata == INT_TO_PTR('p')); | |
564 | ||
565 | assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0); | |
566 | sd_event_source_unref(s); | |
567 | ||
568 | return 0; | |
569 | } | |
570 | ||
68da8adf | 571 | TEST(pidfd) { |
3ecb3bdc LP |
572 | sd_event_source *s = NULL, *t = NULL; |
573 | sd_event *e = NULL; | |
574 | int pidfd; | |
575 | pid_t pid, pid2; | |
576 | ||
db7136ec | 577 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD) >= 0); |
3ecb3bdc LP |
578 | |
579 | pid = fork(); | |
d7a0f1f4 | 580 | if (pid == 0) |
3ecb3bdc LP |
581 | /* child */ |
582 | _exit(66); | |
3ecb3bdc LP |
583 | |
584 | assert_se(pid > 1); | |
585 | ||
586 | pidfd = pidfd_open(pid, 0); | |
587 | if (pidfd < 0) { | |
588 | /* No pidfd_open() supported or blocked? */ | |
589 | assert_se(ERRNO_IS_NOT_SUPPORTED(errno) || ERRNO_IS_PRIVILEGE(errno)); | |
590 | (void) wait_for_terminate(pid, NULL); | |
591 | return; | |
592 | } | |
593 | ||
594 | pid2 = fork(); | |
595 | if (pid2 == 0) | |
596 | freeze(); | |
597 | ||
598 | assert_se(pid > 2); | |
599 | ||
600 | assert_se(sd_event_default(&e) >= 0); | |
601 | assert_se(sd_event_add_child_pidfd(e, &s, pidfd, WEXITED, pidfd_handler, INT_TO_PTR('p')) >= 0); | |
602 | assert_se(sd_event_source_set_child_pidfd_own(s, true) >= 0); | |
603 | ||
604 | /* This one should never trigger, since our second child lives forever */ | |
605 | assert_se(sd_event_add_child(e, &t, pid2, WEXITED, pidfd_handler, INT_TO_PTR('q')) >= 0); | |
606 | assert_se(sd_event_source_set_child_process_own(t, true) >= 0); | |
607 | ||
608 | assert_se(sd_event_loop(e) >= 0); | |
609 | ||
610 | /* Child should still be alive */ | |
611 | assert_se(kill(pid2, 0) >= 0); | |
612 | ||
613 | t = sd_event_source_unref(t); | |
614 | ||
615 | /* Child should now be dead, since we dropped the ref */ | |
616 | assert_se(kill(pid2, 0) < 0 && errno == ESRCH); | |
617 | ||
618 | sd_event_unref(e); | |
619 | } | |
620 | ||
68d89065 MS |
621 | static int ratelimit_io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
622 | unsigned *c = (unsigned*) userdata; | |
623 | *c += 1; | |
624 | return 0; | |
625 | } | |
626 | ||
627 | static int ratelimit_time_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
628 | int r; | |
629 | ||
630 | r = sd_event_source_set_enabled(s, SD_EVENT_ON); | |
631 | if (r < 0) | |
632 | log_warning_errno(r, "Failed to turn on notify event source: %m"); | |
633 | ||
634 | r = sd_event_source_set_time(s, usec + 1000); | |
635 | if (r < 0) | |
636 | log_error_errno(r, "Failed to restart watchdog event source: %m"); | |
637 | ||
638 | unsigned *c = (unsigned*) userdata; | |
639 | *c += 1; | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
fd69f224 MS |
644 | static int expired = -1; |
645 | static int ratelimit_expired(sd_event_source *s, void *userdata) { | |
646 | return ++expired; | |
647 | } | |
648 | ||
68da8adf | 649 | TEST(ratelimit) { |
71136404 | 650 | _cleanup_close_pair_ int p[2] = EBADF_PAIR; |
68d89065 MS |
651 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; |
652 | _cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL; | |
653 | uint64_t interval; | |
654 | unsigned count, burst; | |
655 | ||
656 | assert_se(sd_event_default(&e) >= 0); | |
657 | assert_se(pipe2(p, O_CLOEXEC|O_NONBLOCK) >= 0); | |
658 | ||
659 | assert_se(sd_event_add_io(e, &s, p[0], EPOLLIN, ratelimit_io_handler, &count) >= 0); | |
660 | assert_se(sd_event_source_set_description(s, "test-ratelimit-io") >= 0); | |
661 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 5) >= 0); | |
662 | assert_se(sd_event_source_get_ratelimit(s, &interval, &burst) >= 0); | |
663 | assert_se(interval == 1 * USEC_PER_SEC && burst == 5); | |
664 | ||
665 | assert_se(write(p[1], "1", 1) == 1); | |
666 | ||
667 | count = 0; | |
668 | for (unsigned i = 0; i < 10; i++) { | |
669 | log_debug("slow loop iteration %u", i); | |
670 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
4251512e | 671 | assert_se(usleep_safe(250 * USEC_PER_MSEC) >= 0); |
68d89065 MS |
672 | } |
673 | ||
674 | assert_se(sd_event_source_is_ratelimited(s) == 0); | |
675 | assert_se(count == 10); | |
c0f86d66 | 676 | log_info("ratelimit_io_handler: called %u times, event source not ratelimited", count); |
68d89065 MS |
677 | |
678 | assert_se(sd_event_source_set_ratelimit(s, 0, 0) >= 0); | |
679 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 5) >= 0); | |
680 | ||
681 | count = 0; | |
682 | for (unsigned i = 0; i < 10; i++) { | |
683 | log_debug("fast event loop iteration %u", i); | |
684 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
4251512e | 685 | assert_se(usleep_safe(10) >= 0); |
68d89065 | 686 | } |
c0f86d66 | 687 | log_info("ratelimit_io_handler: called %u times, event source got ratelimited", count); |
68d89065 MS |
688 | assert_se(count < 10); |
689 | ||
690 | s = sd_event_source_unref(s); | |
691 | safe_close_pair(p); | |
692 | ||
693 | count = 0; | |
694 | assert_se(sd_event_add_time_relative(e, &s, CLOCK_MONOTONIC, 1000, 1, ratelimit_time_handler, &count) >= 0); | |
695 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 10) == 0); | |
696 | ||
697 | do { | |
698 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
699 | } while (!sd_event_source_is_ratelimited(s)); | |
700 | ||
c0f86d66 | 701 | log_info("ratelimit_time_handler: called %u times, event source got ratelimited", count); |
68d89065 MS |
702 | assert_se(count == 10); |
703 | ||
da115b93 | 704 | /* In order to get rid of active rate limit client needs to disable it explicitly */ |
68d89065 MS |
705 | assert_se(sd_event_source_set_ratelimit(s, 0, 0) >= 0); |
706 | assert_se(!sd_event_source_is_ratelimited(s)); | |
707 | ||
708 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 10) >= 0); | |
709 | ||
fd69f224 MS |
710 | /* Set callback that will be invoked when we leave rate limited state. */ |
711 | assert_se(sd_event_source_set_ratelimit_expire_callback(s, ratelimit_expired) >= 0); | |
712 | ||
68d89065 MS |
713 | do { |
714 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
715 | } while (!sd_event_source_is_ratelimited(s)); | |
716 | ||
717 | log_info("ratelimit_time_handler: called 10 more times, event source got ratelimited"); | |
718 | assert_se(count == 20); | |
fd69f224 MS |
719 | |
720 | /* Dispatch the event loop once more and check that ratelimit expiration callback got called */ | |
721 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
722 | assert_se(expired == 0); | |
68d89065 MS |
723 | } |
724 | ||
68da8adf | 725 | TEST(simple_timeout) { |
c14e57ba LP |
726 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; |
727 | usec_t f, t, some_time; | |
728 | ||
729 | some_time = random_u64_range(2 * USEC_PER_SEC); | |
730 | ||
731 | assert_se(sd_event_default(&e) >= 0); | |
732 | ||
733 | assert_se(sd_event_prepare(e) == 0); | |
734 | ||
735 | f = now(CLOCK_MONOTONIC); | |
736 | assert_se(sd_event_wait(e, some_time) >= 0); | |
737 | t = now(CLOCK_MONOTONIC); | |
738 | ||
739 | /* The event loop may sleep longer than the specified time (timer accuracy, scheduling latencies, …), | |
740 | * but never shorter. Let's check that. */ | |
741 | assert_se(t >= usec_add(f, some_time)); | |
742 | } | |
743 | ||
035daf73 LP |
744 | static int inotify_self_destroy_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { |
745 | sd_event_source **p = userdata; | |
746 | ||
747 | assert_se(ev); | |
748 | assert_se(p); | |
749 | assert_se(*p == s); | |
750 | ||
751 | assert_se(FLAGS_SET(ev->mask, IN_ATTRIB)); | |
752 | ||
753 | assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0); | |
754 | ||
755 | *p = sd_event_source_unref(*p); /* here's what we actually intend to test: we destroy the event | |
756 | * source from inside the event source handler */ | |
757 | return 1; | |
758 | } | |
759 | ||
68da8adf | 760 | TEST(inotify_self_destroy) { |
035daf73 LP |
761 | _cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL; |
762 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
763 | char path[] = "/tmp/inotifyXXXXXX"; | |
254d1313 | 764 | _cleanup_close_ int fd = -EBADF; |
035daf73 LP |
765 | |
766 | /* Tests that destroying an inotify event source from its own handler is safe */ | |
767 | ||
768 | assert_se(sd_event_default(&e) >= 0); | |
769 | ||
770 | fd = mkostemp_safe(path); | |
771 | assert_se(fd >= 0); | |
772 | assert_se(sd_event_add_inotify_fd(e, &s, fd, IN_ATTRIB, inotify_self_destroy_handler, &s) >= 0); | |
773 | fd = safe_close(fd); | |
774 | assert_se(unlink(path) >= 0); /* This will trigger IN_ATTRIB because link count goes to zero */ | |
775 | assert_se(sd_event_loop(e) >= 0); | |
776 | } | |
777 | ||
c7b5a5a7 YW |
778 | struct inotify_process_buffered_data_context { |
779 | const char *path[2]; | |
780 | unsigned i; | |
781 | }; | |
782 | ||
783 | static int inotify_process_buffered_data_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { | |
784 | struct inotify_process_buffered_data_context *c = ASSERT_PTR(userdata); | |
785 | const char *description; | |
786 | ||
787 | assert_se(sd_event_source_get_description(s, &description) >= 0); | |
788 | ||
789 | assert_se(c->i < 2); | |
790 | assert_se(streq(c->path[c->i], description)); | |
791 | c->i++; | |
792 | ||
793 | return 1; | |
794 | } | |
795 | ||
796 | TEST(inotify_process_buffered_data) { | |
797 | _cleanup_(rm_rf_physical_and_freep) char *p = NULL, *q = NULL; | |
798 | _cleanup_(sd_event_source_unrefp) sd_event_source *a = NULL, *b = NULL; | |
799 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
800 | _cleanup_free_ char *z = NULL; | |
801 | ||
802 | /* For issue #23826 */ | |
803 | ||
804 | assert_se(sd_event_default(&e) >= 0); | |
805 | ||
806 | assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &p) >= 0); | |
807 | assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &q) >= 0); | |
808 | ||
809 | struct inotify_process_buffered_data_context context = { | |
810 | .path = { p, q }, | |
811 | }; | |
812 | ||
813 | assert_se(sd_event_add_inotify(e, &a, p, IN_CREATE, inotify_process_buffered_data_handler, &context) >= 0); | |
814 | assert_se(sd_event_add_inotify(e, &b, q, IN_CREATE, inotify_process_buffered_data_handler, &context) >= 0); | |
815 | ||
816 | assert_se(z = path_join(p, "aaa")); | |
817 | assert_se(touch(z) >= 0); | |
818 | z = mfree(z); | |
819 | assert_se(z = path_join(q, "bbb")); | |
820 | assert_se(touch(z) >= 0); | |
821 | z = mfree(z); | |
822 | ||
823 | assert_se(sd_event_run(e, 10 * USEC_PER_SEC) > 0); | |
824 | assert_se(sd_event_prepare(e) > 0); /* issue #23826: this was 0. */ | |
825 | assert_se(sd_event_dispatch(e) > 0); | |
826 | assert_se(sd_event_prepare(e) == 0); | |
827 | assert_se(sd_event_wait(e, 0) == 0); | |
828 | } | |
829 | ||
2eeff0f4 LB |
830 | TEST(fork) { |
831 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
832 | int r; | |
833 | ||
834 | assert_se(sd_event_default(&e) >= 0); | |
835 | assert_se(sd_event_prepare(e) == 0); | |
836 | ||
837 | /* Check that after a fork the cleanup functions return NULL */ | |
838 | r = safe_fork("(bus-fork-test)", FORK_WAIT|FORK_LOG, NULL); | |
839 | if (r == 0) { | |
840 | assert_se(e); | |
841 | assert_se(sd_event_ref(e) == NULL); | |
842 | assert_se(sd_event_unref(e) == NULL); | |
843 | _exit(EXIT_SUCCESS); | |
844 | } | |
845 | ||
846 | assert_se(r >= 0); | |
847 | } | |
848 | ||
2fa48059 YW |
849 | TEST(sd_event_source_set_io_fd) { |
850 | _cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL; | |
851 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
852 | _cleanup_close_pair_ int pfd_a[2] = EBADF_PAIR, pfd_b[2] = EBADF_PAIR; | |
853 | ||
854 | assert_se(sd_event_default(&e) >= 0); | |
855 | ||
856 | assert_se(pipe2(pfd_a, O_CLOEXEC) >= 0); | |
857 | assert_se(pipe2(pfd_b, O_CLOEXEC) >= 0); | |
858 | ||
859 | assert_se(sd_event_add_io(e, &s, pfd_a[0], EPOLLIN, NULL, INT_TO_PTR(-ENOANO)) >= 0); | |
860 | assert_se(sd_event_source_set_io_fd_own(s, true) >= 0); | |
861 | TAKE_FD(pfd_a[0]); | |
862 | ||
863 | assert_se(sd_event_source_set_io_fd(s, pfd_b[0]) >= 0); | |
864 | TAKE_FD(pfd_b[0]); | |
865 | } | |
866 | ||
2fdc274c LP |
867 | static int hup_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
868 | unsigned *c = userdata; | |
869 | ||
870 | assert_se(revents == EPOLLHUP); | |
871 | ||
872 | (*c)++; | |
873 | return 0; | |
874 | } | |
875 | ||
876 | TEST(leave_ratelimit) { | |
877 | bool expect_ratelimit = false, manually_left_ratelimit = false; | |
878 | _cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL; | |
879 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
71136404 | 880 | _cleanup_close_pair_ int pfd[2] = EBADF_PAIR; |
2fdc274c LP |
881 | unsigned c = 0; |
882 | int r; | |
883 | ||
884 | assert_se(sd_event_default(&e) >= 0); | |
885 | ||
9a27ef09 | 886 | /* Create an event source that will continuously fire by creating a pipe whose write side is closed, |
2fdc274c LP |
887 | * and which hence will only see EOF and constant EPOLLHUP */ |
888 | assert_se(pipe2(pfd, O_CLOEXEC) >= 0); | |
889 | assert_se(sd_event_add_io(e, &s, pfd[0], EPOLLIN, hup_callback, &c) >= 0); | |
890 | assert_se(sd_event_source_set_io_fd_own(s, true) >= 0); | |
891 | assert_se(sd_event_source_set_ratelimit(s, 5*USEC_PER_MINUTE, 5) >= 0); | |
892 | ||
893 | pfd[0] = -EBADF; | |
9a27ef09 | 894 | pfd[1] = safe_close(pfd[1]); /* Trigger continuous EOF */ |
2fdc274c LP |
895 | |
896 | for (;;) { | |
897 | r = sd_event_prepare(e); | |
898 | assert_se(r >= 0); | |
899 | ||
900 | if (r == 0) { | |
901 | r = sd_event_wait(e, UINT64_MAX); | |
902 | assert_se(r > 0); | |
903 | } | |
904 | ||
905 | r = sd_event_dispatch(e); | |
906 | assert_se(r > 0); | |
907 | ||
908 | r = sd_event_source_is_ratelimited(s); | |
909 | assert_se(r >= 0); | |
910 | ||
911 | if (c < 5) | |
912 | /* First four dispatches should just work */ | |
913 | assert_se(!r); | |
914 | else if (c == 5) { | |
915 | /* The fifth dispatch should still work, but we now expect the ratelimit to be hit subsequently */ | |
916 | if (!expect_ratelimit) { | |
917 | assert_se(!r); | |
918 | assert_se(sd_event_source_leave_ratelimit(s) == 0); /* this should be a NOP, and return 0 hence */ | |
919 | expect_ratelimit = true; | |
920 | } else { | |
921 | /* We expected the ratelimit, let's leave it manually, and verify it */ | |
922 | assert_se(r); | |
923 | assert_se(sd_event_source_leave_ratelimit(s) > 0); /* we are ratelimited, hence should return > 0 */ | |
924 | assert_se(sd_event_source_is_ratelimited(s) == 0); | |
925 | ||
926 | manually_left_ratelimit = true; | |
927 | } | |
928 | ||
929 | } else if (c == 6) | |
930 | /* On the sixth iteration let's just exit */ | |
931 | break; | |
932 | } | |
933 | ||
934 | /* Verify we definitely hit the ratelimit and left it manually again */ | |
935 | assert_se(manually_left_ratelimit); | |
936 | } | |
937 | ||
68da8adf | 938 | DEFINE_TEST_MAIN(LOG_DEBUG); |