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a032b68d | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
60f067b4 | 2 | |
81c58355 MB |
3 | #include <sys/wait.h> |
4 | ||
60f067b4 | 5 | #include "sd-event.h" |
db2df898 | 6 | |
b012e921 | 7 | #include "alloc-util.h" |
ea0999c9 | 8 | #include "exec-util.h" |
db2df898 | 9 | #include "fd-util.h" |
b012e921 | 10 | #include "fs-util.h" |
60f067b4 | 11 | #include "log.h" |
e735f4d4 | 12 | #include "macro.h" |
46cdbd49 | 13 | #include "missing_syscall.h" |
b012e921 | 14 | #include "parse-util.h" |
f2dec872 | 15 | #include "path-util.h" |
b012e921 | 16 | #include "process-util.h" |
3a6ce677 | 17 | #include "random-util.h" |
b012e921 | 18 | #include "rm-rf.h" |
86f210e9 | 19 | #include "signal-util.h" |
b012e921 MB |
20 | #include "stdio-util.h" |
21 | #include "string-util.h" | |
6e866b33 MB |
22 | #include "tests.h" |
23 | #include "tmpfile-util.h" | |
db2df898 | 24 | #include "util.h" |
60f067b4 JS |
25 | |
26 | static int prepare_handler(sd_event_source *s, void *userdata) { | |
27 | log_info("preparing %c", PTR_TO_INT(userdata)); | |
28 | return 1; | |
29 | } | |
30 | ||
31 | static bool got_a, got_b, got_c, got_unref; | |
32 | static unsigned got_d; | |
33 | ||
34 | static int unref_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
35 | sd_event_source_unref(s); | |
36 | got_unref = true; | |
37 | return 0; | |
38 | } | |
39 | ||
40 | static int io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
41 | ||
42 | log_info("got IO on %c", PTR_TO_INT(userdata)); | |
43 | ||
44 | if (userdata == INT_TO_PTR('a')) { | |
45 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0); | |
46 | assert_se(!got_a); | |
47 | got_a = true; | |
48 | } else if (userdata == INT_TO_PTR('b')) { | |
49 | assert_se(!got_b); | |
50 | got_b = true; | |
51 | } else if (userdata == INT_TO_PTR('d')) { | |
52 | got_d++; | |
53 | if (got_d < 2) | |
54 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_ONESHOT) >= 0); | |
55 | else | |
56 | assert_se(sd_event_source_set_enabled(s, SD_EVENT_OFF) >= 0); | |
57 | } else | |
ea0999c9 | 58 | assert_not_reached(); |
60f067b4 JS |
59 | |
60 | return 1; | |
61 | } | |
62 | ||
63 | static int child_handler(sd_event_source *s, const siginfo_t *si, void *userdata) { | |
64 | ||
e735f4d4 MP |
65 | assert_se(s); |
66 | assert_se(si); | |
60f067b4 | 67 | |
46cdbd49 BR |
68 | assert_se(si->si_uid == getuid()); |
69 | assert_se(si->si_signo == SIGCHLD); | |
70 | assert_se(si->si_code == CLD_EXITED); | |
71 | assert_se(si->si_status == 78); | |
72 | ||
60f067b4 JS |
73 | log_info("got child on %c", PTR_TO_INT(userdata)); |
74 | ||
e735f4d4 | 75 | assert_se(userdata == INT_TO_PTR('f')); |
60f067b4 JS |
76 | |
77 | assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0); | |
78 | sd_event_source_unref(s); | |
79 | ||
80 | return 1; | |
81 | } | |
82 | ||
83 | static int signal_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
84 | sd_event_source *p = NULL; | |
60f067b4 | 85 | pid_t pid; |
46cdbd49 | 86 | siginfo_t plain_si; |
60f067b4 | 87 | |
e735f4d4 MP |
88 | assert_se(s); |
89 | assert_se(si); | |
60f067b4 JS |
90 | |
91 | log_info("got signal on %c", PTR_TO_INT(userdata)); | |
92 | ||
e735f4d4 | 93 | assert_se(userdata == INT_TO_PTR('e')); |
60f067b4 | 94 | |
46cdbd49 | 95 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, SIGUSR2, -1) >= 0); |
60f067b4 JS |
96 | |
97 | pid = fork(); | |
98 | assert_se(pid >= 0); | |
99 | ||
46cdbd49 BR |
100 | if (pid == 0) { |
101 | sigset_t ss; | |
102 | ||
103 | assert_se(sigemptyset(&ss) >= 0); | |
104 | assert_se(sigaddset(&ss, SIGUSR2) >= 0); | |
105 | ||
106 | zero(plain_si); | |
107 | assert_se(sigwaitinfo(&ss, &plain_si) >= 0); | |
108 | ||
109 | assert_se(plain_si.si_signo == SIGUSR2); | |
110 | assert_se(plain_si.si_value.sival_int == 4711); | |
111 | ||
112 | _exit(78); | |
113 | } | |
60f067b4 JS |
114 | |
115 | assert_se(sd_event_add_child(sd_event_source_get_event(s), &p, pid, WEXITED, child_handler, INT_TO_PTR('f')) >= 0); | |
116 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); | |
46cdbd49 BR |
117 | assert_se(sd_event_source_set_child_process_own(p, true) >= 0); |
118 | ||
119 | /* We can't use structured initialization here, since the structure contains various unions and these | |
120 | * fields lie in overlapping (carefully aligned) unions that LLVM is allergic to allow assignments | |
121 | * to */ | |
122 | zero(plain_si); | |
123 | plain_si.si_signo = SIGUSR2; | |
124 | plain_si.si_code = SI_QUEUE; | |
125 | plain_si.si_pid = getpid(); | |
126 | plain_si.si_uid = getuid(); | |
127 | plain_si.si_value.sival_int = 4711; | |
128 | ||
129 | assert_se(sd_event_source_send_child_signal(p, SIGUSR2, &plain_si, 0) >= 0); | |
60f067b4 JS |
130 | |
131 | sd_event_source_unref(s); | |
132 | ||
133 | return 1; | |
134 | } | |
135 | ||
136 | static int defer_handler(sd_event_source *s, void *userdata) { | |
137 | sd_event_source *p = NULL; | |
60f067b4 | 138 | |
e735f4d4 | 139 | assert_se(s); |
60f067b4 JS |
140 | |
141 | log_info("got defer on %c", PTR_TO_INT(userdata)); | |
142 | ||
e735f4d4 | 143 | assert_se(userdata == INT_TO_PTR('d')); |
60f067b4 | 144 | |
86f210e9 MP |
145 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGUSR1, -1) >= 0); |
146 | ||
60f067b4 JS |
147 | assert_se(sd_event_add_signal(sd_event_source_get_event(s), &p, SIGUSR1, signal_handler, INT_TO_PTR('e')) >= 0); |
148 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); | |
149 | raise(SIGUSR1); | |
150 | ||
151 | sd_event_source_unref(s); | |
152 | ||
153 | return 1; | |
154 | } | |
155 | ||
46cdbd49 | 156 | static bool do_quit; |
60f067b4 JS |
157 | |
158 | static int time_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
159 | log_info("got timer on %c", PTR_TO_INT(userdata)); | |
160 | ||
161 | if (userdata == INT_TO_PTR('c')) { | |
162 | ||
163 | if (do_quit) { | |
164 | sd_event_source *p; | |
165 | ||
166 | assert_se(sd_event_add_defer(sd_event_source_get_event(s), &p, defer_handler, INT_TO_PTR('d')) >= 0); | |
167 | assert_se(sd_event_source_set_enabled(p, SD_EVENT_ONESHOT) >= 0); | |
168 | } else { | |
e735f4d4 | 169 | assert_se(!got_c); |
60f067b4 JS |
170 | got_c = true; |
171 | } | |
172 | } else | |
ea0999c9 | 173 | assert_not_reached(); |
60f067b4 JS |
174 | |
175 | return 2; | |
176 | } | |
177 | ||
178 | static bool got_exit = false; | |
179 | ||
180 | static int exit_handler(sd_event_source *s, void *userdata) { | |
181 | log_info("got quit handler on %c", PTR_TO_INT(userdata)); | |
182 | ||
183 | got_exit = true; | |
184 | ||
185 | return 3; | |
186 | } | |
187 | ||
4c89c718 MP |
188 | static bool got_post = false; |
189 | ||
190 | static int post_handler(sd_event_source *s, void *userdata) { | |
191 | log_info("got post handler"); | |
192 | ||
193 | got_post = true; | |
194 | ||
195 | return 2; | |
196 | } | |
197 | ||
f5caa8fa | 198 | static void test_basic_one(bool with_pidfd) { |
60f067b4 JS |
199 | sd_event *e = NULL; |
200 | sd_event_source *w = NULL, *x = NULL, *y = NULL, *z = NULL, *q = NULL, *t = NULL; | |
201 | static const char ch = 'x'; | |
202 | int a[2] = { -1, -1 }, b[2] = { -1, -1}, d[2] = { -1, -1}, k[2] = { -1, -1 }; | |
4c89c718 | 203 | uint64_t event_now; |
2897b343 | 204 | int64_t priority; |
60f067b4 | 205 | |
3a6ce677 BR |
206 | log_info("/* %s(pidfd=%s) */", __func__, yes_no(with_pidfd)); |
207 | ||
46cdbd49 BR |
208 | assert_se(setenv("SYSTEMD_PIDFD", yes_no(with_pidfd), 1) >= 0); |
209 | ||
60f067b4 JS |
210 | assert_se(pipe(a) >= 0); |
211 | assert_se(pipe(b) >= 0); | |
212 | assert_se(pipe(d) >= 0); | |
213 | assert_se(pipe(k) >= 0); | |
214 | ||
215 | assert_se(sd_event_default(&e) >= 0); | |
4c89c718 | 216 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0); |
60f067b4 JS |
217 | |
218 | assert_se(sd_event_set_watchdog(e, true) >= 0); | |
219 | ||
220 | /* Test whether we cleanly can destroy an io event source from its own handler */ | |
221 | got_unref = false; | |
222 | assert_se(sd_event_add_io(e, &t, k[0], EPOLLIN, unref_handler, NULL) >= 0); | |
223 | assert_se(write(k[1], &ch, 1) == 1); | |
3a6ce677 | 224 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
60f067b4 JS |
225 | assert_se(got_unref); |
226 | ||
227 | got_a = false, got_b = false, got_c = false, got_d = 0; | |
228 | ||
b012e921 | 229 | /* Add a oneshot handler, trigger it, reenable it, and trigger |
60f067b4 JS |
230 | * it again. */ |
231 | assert_se(sd_event_add_io(e, &w, d[0], EPOLLIN, io_handler, INT_TO_PTR('d')) >= 0); | |
232 | assert_se(sd_event_source_set_enabled(w, SD_EVENT_ONESHOT) >= 0); | |
233 | assert_se(write(d[1], &ch, 1) >= 0); | |
3a6ce677 | 234 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
60f067b4 JS |
235 | assert_se(got_d == 1); |
236 | assert_se(write(d[1], &ch, 1) >= 0); | |
3a6ce677 | 237 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
60f067b4 JS |
238 | assert_se(got_d == 2); |
239 | ||
240 | assert_se(sd_event_add_io(e, &x, a[0], EPOLLIN, io_handler, INT_TO_PTR('a')) >= 0); | |
241 | assert_se(sd_event_add_io(e, &y, b[0], EPOLLIN, io_handler, INT_TO_PTR('b')) >= 0); | |
46cdbd49 BR |
242 | |
243 | do_quit = false; | |
60f067b4 JS |
244 | assert_se(sd_event_add_time(e, &z, CLOCK_MONOTONIC, 0, 0, time_handler, INT_TO_PTR('c')) >= 0); |
245 | assert_se(sd_event_add_exit(e, &q, exit_handler, INT_TO_PTR('g')) >= 0); | |
246 | ||
247 | assert_se(sd_event_source_set_priority(x, 99) >= 0); | |
2897b343 MP |
248 | assert_se(sd_event_source_get_priority(x, &priority) >= 0); |
249 | assert_se(priority == 99); | |
60f067b4 JS |
250 | assert_se(sd_event_source_set_enabled(y, SD_EVENT_ONESHOT) >= 0); |
251 | assert_se(sd_event_source_set_prepare(x, prepare_handler) >= 0); | |
252 | assert_se(sd_event_source_set_priority(z, 50) >= 0); | |
253 | assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0); | |
254 | assert_se(sd_event_source_set_prepare(z, prepare_handler) >= 0); | |
255 | ||
256 | /* Test for floating event sources */ | |
86f210e9 | 257 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+1, -1) >= 0); |
60f067b4 JS |
258 | assert_se(sd_event_add_signal(e, NULL, SIGRTMIN+1, NULL, NULL) >= 0); |
259 | ||
260 | assert_se(write(a[1], &ch, 1) >= 0); | |
261 | assert_se(write(b[1], &ch, 1) >= 0); | |
262 | ||
263 | assert_se(!got_a && !got_b && !got_c); | |
264 | ||
3a6ce677 | 265 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
60f067b4 JS |
266 | |
267 | assert_se(!got_a && got_b && !got_c); | |
268 | ||
3a6ce677 | 269 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
60f067b4 JS |
270 | |
271 | assert_se(!got_a && got_b && got_c); | |
272 | ||
3a6ce677 | 273 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
60f067b4 JS |
274 | |
275 | assert_se(got_a && got_b && got_c); | |
276 | ||
277 | sd_event_source_unref(x); | |
278 | sd_event_source_unref(y); | |
279 | ||
280 | do_quit = true; | |
4c89c718 MP |
281 | assert_se(sd_event_add_post(e, NULL, post_handler, NULL) >= 0); |
282 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0); | |
283 | assert_se(sd_event_source_set_time(z, event_now + 200 * USEC_PER_MSEC) >= 0); | |
60f067b4 JS |
284 | assert_se(sd_event_source_set_enabled(z, SD_EVENT_ONESHOT) >= 0); |
285 | ||
286 | assert_se(sd_event_loop(e) >= 0); | |
4c89c718 MP |
287 | assert_se(got_post); |
288 | assert_se(got_exit); | |
60f067b4 JS |
289 | |
290 | sd_event_source_unref(z); | |
291 | sd_event_source_unref(q); | |
292 | ||
293 | sd_event_source_unref(w); | |
294 | ||
295 | sd_event_unref(e); | |
296 | ||
297 | safe_close_pair(a); | |
298 | safe_close_pair(b); | |
299 | safe_close_pair(d); | |
300 | safe_close_pair(k); | |
46cdbd49 BR |
301 | |
302 | assert_se(unsetenv("SYSTEMD_PIDFD") >= 0); | |
d9dfd233 MP |
303 | } |
304 | ||
f5caa8fa MB |
305 | TEST(basic) { |
306 | test_basic_one(true); /* test with pidfd */ | |
307 | test_basic_one(false); /* test without pidfd */ | |
308 | } | |
309 | ||
310 | TEST(sd_event_now) { | |
4c89c718 MP |
311 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; |
312 | uint64_t event_now; | |
313 | ||
314 | assert_se(sd_event_new(&e) >= 0); | |
315 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) > 0); | |
316 | assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) > 0); | |
317 | assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) > 0); | |
f5caa8fa MB |
318 | assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) > 0); |
319 | assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) > 0); | |
4c89c718 MP |
320 | assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP); |
321 | assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP); | |
322 | ||
323 | assert_se(sd_event_run(e, 0) == 0); | |
324 | ||
325 | assert_se(sd_event_now(e, CLOCK_MONOTONIC, &event_now) == 0); | |
326 | assert_se(sd_event_now(e, CLOCK_REALTIME, &event_now) == 0); | |
327 | assert_se(sd_event_now(e, CLOCK_REALTIME_ALARM, &event_now) == 0); | |
f5caa8fa MB |
328 | assert_se(sd_event_now(e, CLOCK_BOOTTIME, &event_now) == 0); |
329 | assert_se(sd_event_now(e, CLOCK_BOOTTIME_ALARM, &event_now) == 0); | |
4c89c718 MP |
330 | assert_se(sd_event_now(e, -1, &event_now) == -EOPNOTSUPP); |
331 | assert_se(sd_event_now(e, 900 /* arbitrary big number */, &event_now) == -EOPNOTSUPP); | |
332 | } | |
333 | ||
d9dfd233 MP |
334 | static int last_rtqueue_sigval = 0; |
335 | static int n_rtqueue = 0; | |
336 | ||
337 | static int rtqueue_handler(sd_event_source *s, const struct signalfd_siginfo *si, void *userdata) { | |
338 | last_rtqueue_sigval = si->ssi_int; | |
aa27b158 | 339 | n_rtqueue++; |
d9dfd233 MP |
340 | return 0; |
341 | } | |
342 | ||
f5caa8fa | 343 | TEST(rtqueue) { |
d9dfd233 MP |
344 | sd_event_source *u = NULL, *v = NULL, *s = NULL; |
345 | sd_event *e = NULL; | |
346 | ||
347 | assert_se(sd_event_default(&e) >= 0); | |
348 | ||
349 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGRTMIN+2, SIGRTMIN+3, SIGUSR2, -1) >= 0); | |
350 | assert_se(sd_event_add_signal(e, &u, SIGRTMIN+2, rtqueue_handler, NULL) >= 0); | |
351 | assert_se(sd_event_add_signal(e, &v, SIGRTMIN+3, rtqueue_handler, NULL) >= 0); | |
352 | assert_se(sd_event_add_signal(e, &s, SIGUSR2, rtqueue_handler, NULL) >= 0); | |
353 | ||
354 | assert_se(sd_event_source_set_priority(v, -10) >= 0); | |
355 | ||
52ad194e MB |
356 | assert_se(sigqueue(getpid_cached(), SIGRTMIN+2, (union sigval) { .sival_int = 1 }) >= 0); |
357 | assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 2 }) >= 0); | |
358 | assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 3 }) >= 0); | |
359 | assert_se(sigqueue(getpid_cached(), SIGRTMIN+3, (union sigval) { .sival_int = 4 }) >= 0); | |
360 | assert_se(sigqueue(getpid_cached(), SIGUSR2, (union sigval) { .sival_int = 5 }) >= 0); | |
d9dfd233 MP |
361 | |
362 | assert_se(n_rtqueue == 0); | |
363 | assert_se(last_rtqueue_sigval == 0); | |
364 | ||
3a6ce677 | 365 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
d9dfd233 MP |
366 | assert_se(n_rtqueue == 1); |
367 | assert_se(last_rtqueue_sigval == 2); /* first SIGRTMIN+3 */ | |
368 | ||
3a6ce677 | 369 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
d9dfd233 MP |
370 | assert_se(n_rtqueue == 2); |
371 | assert_se(last_rtqueue_sigval == 4); /* second SIGRTMIN+3 */ | |
372 | ||
3a6ce677 | 373 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
d9dfd233 MP |
374 | assert_se(n_rtqueue == 3); |
375 | assert_se(last_rtqueue_sigval == 3); /* first SIGUSR2 */ | |
376 | ||
3a6ce677 | 377 | assert_se(sd_event_run(e, UINT64_MAX) >= 1); |
d9dfd233 MP |
378 | assert_se(n_rtqueue == 4); |
379 | assert_se(last_rtqueue_sigval == 1); /* SIGRTMIN+2 */ | |
380 | ||
381 | assert_se(sd_event_run(e, 0) == 0); /* the other SIGUSR2 is dropped, because the first one was still queued */ | |
382 | assert_se(n_rtqueue == 4); | |
383 | assert_se(last_rtqueue_sigval == 1); | |
384 | ||
385 | sd_event_source_unref(u); | |
386 | sd_event_source_unref(v); | |
387 | sd_event_source_unref(s); | |
388 | ||
389 | sd_event_unref(e); | |
390 | } | |
391 | ||
b012e921 MB |
392 | #define CREATE_EVENTS_MAX (70000U) |
393 | ||
394 | struct inotify_context { | |
395 | bool delete_self_handler_called; | |
396 | unsigned create_called[CREATE_EVENTS_MAX]; | |
397 | unsigned create_overflow; | |
398 | unsigned n_create_events; | |
399 | }; | |
400 | ||
401 | static void maybe_exit(sd_event_source *s, struct inotify_context *c) { | |
402 | unsigned n; | |
403 | ||
ea0999c9 MB |
404 | assert_se(s); |
405 | assert_se(c); | |
b012e921 MB |
406 | |
407 | if (!c->delete_self_handler_called) | |
408 | return; | |
409 | ||
410 | for (n = 0; n < 3; n++) { | |
411 | unsigned i; | |
412 | ||
413 | if (c->create_overflow & (1U << n)) | |
414 | continue; | |
415 | ||
416 | for (i = 0; i < c->n_create_events; i++) | |
417 | if (!(c->create_called[i] & (1U << n))) | |
418 | return; | |
419 | } | |
420 | ||
421 | sd_event_exit(sd_event_source_get_event(s), 0); | |
422 | } | |
423 | ||
424 | static int inotify_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { | |
425 | struct inotify_context *c = userdata; | |
426 | const char *description; | |
427 | unsigned bit, n; | |
428 | ||
429 | assert_se(sd_event_source_get_description(s, &description) >= 0); | |
430 | assert_se(safe_atou(description, &n) >= 0); | |
431 | ||
432 | assert_se(n <= 3); | |
433 | bit = 1U << n; | |
434 | ||
435 | if (ev->mask & IN_Q_OVERFLOW) { | |
436 | log_info("inotify-handler <%s>: overflow", description); | |
437 | c->create_overflow |= bit; | |
438 | } else if (ev->mask & IN_CREATE) { | |
8b3d4ff0 MB |
439 | if (streq(ev->name, "sub")) |
440 | log_debug("inotify-handler <%s>: create on %s", description, ev->name); | |
441 | else { | |
442 | unsigned i; | |
b012e921 | 443 | |
b012e921 | 444 | assert_se(safe_atou(ev->name, &i) >= 0); |
b012e921 MB |
445 | assert_se(i < c->n_create_events); |
446 | c->create_called[i] |= bit; | |
447 | } | |
448 | } else if (ev->mask & IN_DELETE) { | |
449 | log_info("inotify-handler <%s>: delete of %s", description, ev->name); | |
450 | assert_se(streq(ev->name, "sub")); | |
451 | } else | |
ea0999c9 | 452 | assert_not_reached(); |
b012e921 MB |
453 | |
454 | maybe_exit(s, c); | |
455 | return 1; | |
456 | } | |
457 | ||
458 | static int delete_self_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { | |
459 | struct inotify_context *c = userdata; | |
460 | ||
461 | if (ev->mask & IN_Q_OVERFLOW) { | |
462 | log_info("delete-self-handler: overflow"); | |
463 | c->delete_self_handler_called = true; | |
464 | } else if (ev->mask & IN_DELETE_SELF) { | |
465 | log_info("delete-self-handler: delete-self"); | |
466 | c->delete_self_handler_called = true; | |
467 | } else if (ev->mask & IN_IGNORED) { | |
468 | log_info("delete-self-handler: ignore"); | |
469 | } else | |
ea0999c9 | 470 | assert_not_reached(); |
b012e921 MB |
471 | |
472 | maybe_exit(s, c); | |
473 | return 1; | |
474 | } | |
475 | ||
f5caa8fa | 476 | static void test_inotify_one(unsigned n_create_events) { |
b012e921 MB |
477 | _cleanup_(rm_rf_physical_and_freep) char *p = NULL; |
478 | sd_event_source *a = NULL, *b = NULL, *c = NULL, *d = NULL; | |
479 | struct inotify_context context = { | |
480 | .n_create_events = n_create_events, | |
481 | }; | |
482 | sd_event *e = NULL; | |
483 | const char *q; | |
484 | unsigned i; | |
485 | ||
3a6ce677 BR |
486 | log_info("/* %s(%u) */", __func__, n_create_events); |
487 | ||
b012e921 MB |
488 | assert_se(sd_event_default(&e) >= 0); |
489 | ||
490 | assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &p) >= 0); | |
491 | ||
492 | assert_se(sd_event_add_inotify(e, &a, p, IN_CREATE|IN_ONLYDIR, inotify_handler, &context) >= 0); | |
493 | assert_se(sd_event_add_inotify(e, &b, p, IN_CREATE|IN_DELETE|IN_DONT_FOLLOW, inotify_handler, &context) >= 0); | |
494 | assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_IDLE) >= 0); | |
495 | assert_se(sd_event_source_set_priority(b, SD_EVENT_PRIORITY_NORMAL) >= 0); | |
496 | assert_se(sd_event_add_inotify(e, &c, p, IN_CREATE|IN_DELETE|IN_EXCL_UNLINK, inotify_handler, &context) >= 0); | |
497 | assert_se(sd_event_source_set_priority(c, SD_EVENT_PRIORITY_IDLE) >= 0); | |
498 | ||
499 | assert_se(sd_event_source_set_description(a, "0") >= 0); | |
500 | assert_se(sd_event_source_set_description(b, "1") >= 0); | |
501 | assert_se(sd_event_source_set_description(c, "2") >= 0); | |
502 | ||
503 | q = strjoina(p, "/sub"); | |
504 | assert_se(touch(q) >= 0); | |
505 | assert_se(sd_event_add_inotify(e, &d, q, IN_DELETE_SELF, delete_self_handler, &context) >= 0); | |
506 | ||
507 | for (i = 0; i < n_create_events; i++) { | |
508 | char buf[DECIMAL_STR_MAX(unsigned)+1]; | |
ecfb185f | 509 | _cleanup_free_ char *z = NULL; |
b012e921 MB |
510 | |
511 | xsprintf(buf, "%u", i); | |
f2dec872 | 512 | assert_se(z = path_join(p, buf)); |
b012e921 MB |
513 | |
514 | assert_se(touch(z) >= 0); | |
515 | } | |
516 | ||
517 | assert_se(unlink(q) >= 0); | |
518 | ||
519 | assert_se(sd_event_loop(e) >= 0); | |
520 | ||
521 | sd_event_source_unref(a); | |
522 | sd_event_source_unref(b); | |
523 | sd_event_source_unref(c); | |
524 | sd_event_source_unref(d); | |
525 | ||
526 | sd_event_unref(e); | |
527 | } | |
528 | ||
f5caa8fa MB |
529 | TEST(inotify) { |
530 | test_inotify_one(100); /* should work without overflow */ | |
531 | test_inotify_one(33000); /* should trigger a q overflow */ | |
532 | } | |
533 | ||
46cdbd49 BR |
534 | static int pidfd_handler(sd_event_source *s, const siginfo_t *si, void *userdata) { |
535 | assert_se(s); | |
536 | assert_se(si); | |
537 | ||
538 | assert_se(si->si_uid == getuid()); | |
539 | assert_se(si->si_signo == SIGCHLD); | |
540 | assert_se(si->si_code == CLD_EXITED); | |
541 | assert_se(si->si_status == 66); | |
542 | ||
543 | log_info("got pidfd on %c", PTR_TO_INT(userdata)); | |
544 | ||
545 | assert_se(userdata == INT_TO_PTR('p')); | |
546 | ||
547 | assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0); | |
548 | sd_event_source_unref(s); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
f5caa8fa | 553 | TEST(pidfd) { |
46cdbd49 BR |
554 | sd_event_source *s = NULL, *t = NULL; |
555 | sd_event *e = NULL; | |
556 | int pidfd; | |
557 | pid_t pid, pid2; | |
558 | ||
559 | assert_se(sigprocmask_many(SIG_BLOCK, NULL, SIGCHLD, -1) >= 0); | |
560 | ||
561 | pid = fork(); | |
a032b68d | 562 | if (pid == 0) |
46cdbd49 BR |
563 | /* child */ |
564 | _exit(66); | |
46cdbd49 BR |
565 | |
566 | assert_se(pid > 1); | |
567 | ||
568 | pidfd = pidfd_open(pid, 0); | |
569 | if (pidfd < 0) { | |
570 | /* No pidfd_open() supported or blocked? */ | |
571 | assert_se(ERRNO_IS_NOT_SUPPORTED(errno) || ERRNO_IS_PRIVILEGE(errno)); | |
572 | (void) wait_for_terminate(pid, NULL); | |
573 | return; | |
574 | } | |
575 | ||
576 | pid2 = fork(); | |
577 | if (pid2 == 0) | |
578 | freeze(); | |
579 | ||
580 | assert_se(pid > 2); | |
581 | ||
582 | assert_se(sd_event_default(&e) >= 0); | |
583 | assert_se(sd_event_add_child_pidfd(e, &s, pidfd, WEXITED, pidfd_handler, INT_TO_PTR('p')) >= 0); | |
584 | assert_se(sd_event_source_set_child_pidfd_own(s, true) >= 0); | |
585 | ||
586 | /* This one should never trigger, since our second child lives forever */ | |
587 | assert_se(sd_event_add_child(e, &t, pid2, WEXITED, pidfd_handler, INT_TO_PTR('q')) >= 0); | |
588 | assert_se(sd_event_source_set_child_process_own(t, true) >= 0); | |
589 | ||
590 | assert_se(sd_event_loop(e) >= 0); | |
591 | ||
592 | /* Child should still be alive */ | |
593 | assert_se(kill(pid2, 0) >= 0); | |
594 | ||
595 | t = sd_event_source_unref(t); | |
596 | ||
597 | /* Child should now be dead, since we dropped the ref */ | |
598 | assert_se(kill(pid2, 0) < 0 && errno == ESRCH); | |
599 | ||
600 | sd_event_unref(e); | |
601 | } | |
602 | ||
3a6ce677 BR |
603 | static int ratelimit_io_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { |
604 | unsigned *c = (unsigned*) userdata; | |
605 | *c += 1; | |
606 | return 0; | |
607 | } | |
608 | ||
609 | static int ratelimit_time_handler(sd_event_source *s, uint64_t usec, void *userdata) { | |
610 | int r; | |
611 | ||
612 | r = sd_event_source_set_enabled(s, SD_EVENT_ON); | |
613 | if (r < 0) | |
614 | log_warning_errno(r, "Failed to turn on notify event source: %m"); | |
615 | ||
616 | r = sd_event_source_set_time(s, usec + 1000); | |
617 | if (r < 0) | |
618 | log_error_errno(r, "Failed to restart watchdog event source: %m"); | |
619 | ||
620 | unsigned *c = (unsigned*) userdata; | |
621 | *c += 1; | |
622 | ||
623 | return 0; | |
624 | } | |
625 | ||
ea0999c9 MB |
626 | static int expired = -1; |
627 | static int ratelimit_expired(sd_event_source *s, void *userdata) { | |
628 | return ++expired; | |
629 | } | |
630 | ||
f5caa8fa | 631 | TEST(ratelimit) { |
3a6ce677 BR |
632 | _cleanup_close_pair_ int p[2] = {-1, -1}; |
633 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
634 | _cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL; | |
635 | uint64_t interval; | |
636 | unsigned count, burst; | |
637 | ||
3a6ce677 BR |
638 | assert_se(sd_event_default(&e) >= 0); |
639 | assert_se(pipe2(p, O_CLOEXEC|O_NONBLOCK) >= 0); | |
640 | ||
641 | assert_se(sd_event_add_io(e, &s, p[0], EPOLLIN, ratelimit_io_handler, &count) >= 0); | |
642 | assert_se(sd_event_source_set_description(s, "test-ratelimit-io") >= 0); | |
643 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 5) >= 0); | |
644 | assert_se(sd_event_source_get_ratelimit(s, &interval, &burst) >= 0); | |
645 | assert_se(interval == 1 * USEC_PER_SEC && burst == 5); | |
646 | ||
647 | assert_se(write(p[1], "1", 1) == 1); | |
648 | ||
649 | count = 0; | |
650 | for (unsigned i = 0; i < 10; i++) { | |
651 | log_debug("slow loop iteration %u", i); | |
652 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
653 | assert_se(usleep(250 * USEC_PER_MSEC) >= 0); | |
654 | } | |
655 | ||
656 | assert_se(sd_event_source_is_ratelimited(s) == 0); | |
657 | assert_se(count == 10); | |
086111aa | 658 | log_info("ratelimit_io_handler: called %u times, event source not ratelimited", count); |
3a6ce677 BR |
659 | |
660 | assert_se(sd_event_source_set_ratelimit(s, 0, 0) >= 0); | |
661 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 5) >= 0); | |
662 | ||
663 | count = 0; | |
664 | for (unsigned i = 0; i < 10; i++) { | |
665 | log_debug("fast event loop iteration %u", i); | |
666 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
667 | assert_se(usleep(10) >= 0); | |
668 | } | |
086111aa | 669 | log_info("ratelimit_io_handler: called %u times, event source got ratelimited", count); |
3a6ce677 BR |
670 | assert_se(count < 10); |
671 | ||
672 | s = sd_event_source_unref(s); | |
673 | safe_close_pair(p); | |
674 | ||
675 | count = 0; | |
676 | assert_se(sd_event_add_time_relative(e, &s, CLOCK_MONOTONIC, 1000, 1, ratelimit_time_handler, &count) >= 0); | |
677 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 10) == 0); | |
678 | ||
679 | do { | |
680 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
681 | } while (!sd_event_source_is_ratelimited(s)); | |
682 | ||
086111aa | 683 | log_info("ratelimit_time_handler: called %u times, event source got ratelimited", count); |
3a6ce677 BR |
684 | assert_se(count == 10); |
685 | ||
686 | /* In order to get rid of active rate limit client needs to disable it explicitly */ | |
687 | assert_se(sd_event_source_set_ratelimit(s, 0, 0) >= 0); | |
688 | assert_se(!sd_event_source_is_ratelimited(s)); | |
689 | ||
690 | assert_se(sd_event_source_set_ratelimit(s, 1 * USEC_PER_SEC, 10) >= 0); | |
691 | ||
ea0999c9 MB |
692 | /* Set callback that will be invoked when we leave rate limited state. */ |
693 | assert_se(sd_event_source_set_ratelimit_expire_callback(s, ratelimit_expired) >= 0); | |
694 | ||
3a6ce677 BR |
695 | do { |
696 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
697 | } while (!sd_event_source_is_ratelimited(s)); | |
698 | ||
699 | log_info("ratelimit_time_handler: called 10 more times, event source got ratelimited"); | |
700 | assert_se(count == 20); | |
ea0999c9 MB |
701 | |
702 | /* Dispatch the event loop once more and check that ratelimit expiration callback got called */ | |
703 | assert_se(sd_event_run(e, UINT64_MAX) >= 0); | |
704 | assert_se(expired == 0); | |
3a6ce677 BR |
705 | } |
706 | ||
f5caa8fa | 707 | TEST(simple_timeout) { |
3a6ce677 BR |
708 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; |
709 | usec_t f, t, some_time; | |
710 | ||
711 | some_time = random_u64_range(2 * USEC_PER_SEC); | |
712 | ||
713 | assert_se(sd_event_default(&e) >= 0); | |
714 | ||
715 | assert_se(sd_event_prepare(e) == 0); | |
716 | ||
717 | f = now(CLOCK_MONOTONIC); | |
718 | assert_se(sd_event_wait(e, some_time) >= 0); | |
719 | t = now(CLOCK_MONOTONIC); | |
720 | ||
721 | /* The event loop may sleep longer than the specified time (timer accuracy, scheduling latencies, …), | |
722 | * but never shorter. Let's check that. */ | |
723 | assert_se(t >= usec_add(f, some_time)); | |
724 | } | |
725 | ||
ea0999c9 MB |
726 | static int inotify_self_destroy_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { |
727 | sd_event_source **p = userdata; | |
728 | ||
729 | assert_se(ev); | |
730 | assert_se(p); | |
731 | assert_se(*p == s); | |
732 | ||
733 | assert_se(FLAGS_SET(ev->mask, IN_ATTRIB)); | |
734 | ||
735 | assert_se(sd_event_exit(sd_event_source_get_event(s), 0) >= 0); | |
736 | ||
737 | *p = sd_event_source_unref(*p); /* here's what we actually intend to test: we destroy the event | |
738 | * source from inside the event source handler */ | |
739 | return 1; | |
740 | } | |
741 | ||
f5caa8fa | 742 | TEST(inotify_self_destroy) { |
ea0999c9 MB |
743 | _cleanup_(sd_event_source_unrefp) sd_event_source *s = NULL; |
744 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
745 | char path[] = "/tmp/inotifyXXXXXX"; | |
746 | _cleanup_close_ int fd = -1; | |
747 | ||
748 | /* Tests that destroying an inotify event source from its own handler is safe */ | |
749 | ||
750 | assert_se(sd_event_default(&e) >= 0); | |
751 | ||
752 | fd = mkostemp_safe(path); | |
753 | assert_se(fd >= 0); | |
754 | assert_se(sd_event_add_inotify_fd(e, &s, fd, IN_ATTRIB, inotify_self_destroy_handler, &s) >= 0); | |
755 | fd = safe_close(fd); | |
756 | assert_se(unlink(path) >= 0); /* This will trigger IN_ATTRIB because link count goes to zero */ | |
757 | assert_se(sd_event_loop(e) >= 0); | |
758 | } | |
759 | ||
3e11e177 MB |
760 | struct inotify_process_buffered_data_context { |
761 | const char *path[2]; | |
762 | unsigned i; | |
763 | }; | |
764 | ||
765 | static int inotify_process_buffered_data_handler(sd_event_source *s, const struct inotify_event *ev, void *userdata) { | |
766 | struct inotify_process_buffered_data_context *c = ASSERT_PTR(userdata); | |
767 | const char *description; | |
768 | ||
769 | assert_se(sd_event_source_get_description(s, &description) >= 0); | |
770 | ||
771 | assert_se(c->i < 2); | |
772 | assert_se(streq(c->path[c->i], description)); | |
773 | c->i++; | |
774 | ||
775 | return 1; | |
776 | } | |
777 | ||
778 | TEST(inotify_process_buffered_data) { | |
779 | _cleanup_(rm_rf_physical_and_freep) char *p = NULL, *q = NULL; | |
780 | _cleanup_(sd_event_source_unrefp) sd_event_source *a = NULL, *b = NULL; | |
781 | _cleanup_(sd_event_unrefp) sd_event *e = NULL; | |
782 | _cleanup_free_ char *z = NULL; | |
783 | ||
784 | /* For issue #23826 */ | |
785 | ||
786 | assert_se(sd_event_default(&e) >= 0); | |
787 | ||
788 | assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &p) >= 0); | |
789 | assert_se(mkdtemp_malloc("/tmp/test-inotify-XXXXXX", &q) >= 0); | |
790 | ||
791 | struct inotify_process_buffered_data_context context = { | |
792 | .path = { p, q }, | |
793 | }; | |
794 | ||
795 | assert_se(sd_event_add_inotify(e, &a, p, IN_CREATE, inotify_process_buffered_data_handler, &context) >= 0); | |
796 | assert_se(sd_event_add_inotify(e, &b, q, IN_CREATE, inotify_process_buffered_data_handler, &context) >= 0); | |
797 | ||
798 | assert_se(z = path_join(p, "aaa")); | |
799 | assert_se(touch(z) >= 0); | |
800 | z = mfree(z); | |
801 | assert_se(z = path_join(q, "bbb")); | |
802 | assert_se(touch(z) >= 0); | |
803 | z = mfree(z); | |
804 | ||
805 | assert_se(sd_event_run(e, 10 * USEC_PER_SEC) > 0); | |
806 | assert_se(sd_event_prepare(e) > 0); /* issue #23826: this was 0. */ | |
807 | assert_se(sd_event_dispatch(e) > 0); | |
808 | assert_se(sd_event_prepare(e) == 0); | |
809 | assert_se(sd_event_wait(e, 0) == 0); | |
810 | } | |
811 | ||
f5caa8fa | 812 | DEFINE_TEST_MAIN(LOG_DEBUG); |