1 /* Test message queue passing.
2 Copyright (C) 2004-2021 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
30 #include "tst-mqueue.h"
33 alrm_handler (int sig)
37 #define TEST_FUNCTION do_test ()
43 char name[sizeof "/tst-mqueue2-" + sizeof (pid_t) * 3];
44 snprintf (name, sizeof (name), "/tst-mqueue2-%u", getpid ());
46 struct mq_attr attr = { .mq_maxmsg = 2, .mq_msgsize = 2 };
47 mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
51 printf ("mq_open failed with: %m\n");
57 mqd_t q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
60 puts ("mq_open with O_EXCL unexpectedly succeeded");
63 else if (errno != EEXIST)
65 printf ("mq_open did not fail with EEXIST: %m\n");
69 char name2[sizeof "/tst-mqueue2-2-" + sizeof (pid_t) * 3];
70 snprintf (name2, sizeof (name2), "/tst-mqueue2-2-%u", getpid ());
73 q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
76 puts ("mq_open with invalid mq_maxmsg unexpectedly succeeded");
80 else if (errno != EINVAL)
82 printf ("mq_open with invalid mq_maxmsg did not fail with "
88 attr.mq_msgsize = -56;
89 q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
92 puts ("mq_open with invalid mq_msgsize unexpectedly succeeded");
96 else if (errno != EINVAL)
98 printf ("mq_open with invalid mq_msgsize did not fail with "
105 if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
109 ts.tv_sec = time (NULL) + 10;
113 if (mq_timedreceive (q, buf, 1, NULL, &ts) == 0)
115 puts ("mq_timedreceive with too small msg_len did not fail");
118 else if (errno != EMSGSIZE)
120 printf ("mq_timedreceive with too small msg_len did not fail with "
126 if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
128 puts ("mq_timedreceive with negative tv_nsec did not fail");
131 else if (errno != EINVAL)
133 printf ("mq_timedreceive with negative tv_nsec did not fail with "
138 ts.tv_nsec = 1000000000;
139 if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
141 puts ("mq_timedreceive with tv_nsec >= 1000000000 did not fail");
144 else if (errno != EINVAL)
146 printf ("mq_timedreceive with tv_nsec >= 1000000000 did not fail with "
151 struct sigaction sa = { .sa_handler = alrm_handler, .sa_flags = 0 };
152 sigemptyset (&sa.sa_mask);
153 sigaction (SIGALRM, &sa, NULL);
155 struct itimerval it = { .it_value = { .tv_sec = 1 } };
156 setitimer (ITIMER_REAL, &it, NULL);
158 if (mq_receive (q, buf, 2, NULL) == 0)
160 puts ("mq_receive on empty queue did not block");
163 else if (errno != EINTR)
165 printf ("mq_receive on empty queue did not fail with EINTR: %m\n");
169 setitimer (ITIMER_REAL, &it, NULL);
172 if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0)
174 puts ("mq_timedreceive on empty queue did not block");
177 else if (errno != EINTR)
179 printf ("mq_timedreceive on empty queue did not fail with EINTR: %m\n");
185 if (mq_send (q, buf, 2, 3) != 0
186 || (buf[0] = '8', mq_send (q, buf, 1, 4) != 0))
188 printf ("mq_send failed: %m\n");
192 memset (buf, ' ', sizeof (buf));
195 ssize_t rets = mq_receive (q, buf, 3, &prio);
199 printf ("mq_receive failed: %m\n");
201 printf ("mq_receive returned %zd != 1\n", rets);
204 else if (prio != 4 || memcmp (buf, "8 ", 3) != 0)
206 printf ("mq_receive prio %u (4) buf \"%c%c%c\" (\"8 \")\n",
207 prio, buf[0], buf[1], buf[2]);
211 rets = mq_receive (q, buf, 2, NULL);
215 printf ("mq_receive failed: %m\n");
217 printf ("mq_receive returned %zd != 2\n", rets);
220 else if (memcmp (buf, "67 ", 3) != 0)
222 printf ("mq_receive buf \"%c%c%c\" != \"67 \"\n",
223 buf[0], buf[1], buf[2]);
229 if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
230 ts.tv_sec = time (NULL);
231 ts.tv_nsec = -1000000001;
232 if ((mq_timedsend (q, buf, 2, 5, &ts) != 0
233 && (errno != EINVAL || mq_send (q, buf, 2, 5) != 0))
234 || (buf[0] = '3', ts.tv_nsec = -ts.tv_nsec,
235 (mq_timedsend (q, buf, 1, 4, &ts) != 0
236 && (errno != EINVAL || mq_send (q, buf, 1, 4) != 0))))
238 printf ("mq_timedsend failed: %m\n");
243 ts.tv_nsec = 1000000001;
244 if (mq_timedsend (q, buf, 1, 6, &ts) == 0)
246 puts ("mq_timedsend with tv_nsec >= 1000000000 did not fail");
249 else if (errno != EINVAL)
251 printf ("mq_timedsend with tv_nsec >= 1000000000 did not fail with "
257 if (mq_timedsend (q, buf, 1, 6, &ts) == 0)
259 puts ("mq_timedsend with negative tv_nsec did not fail");
262 else if (errno != EINVAL)
264 printf ("mq_timedsend with megatove tv_nsec did not fail with "
269 setitimer (ITIMER_REAL, &it, NULL);
271 if (mq_send (q, buf, 2, 8) == 0)
273 puts ("mq_send on full queue did not block");
276 else if (errno != EINTR)
278 printf ("mq_send on full queue did not fail with EINTR: %m\n");
282 setitimer (ITIMER_REAL, &it, NULL);
286 if (mq_timedsend (q, buf, 2, 7, &ts) == 0)
288 puts ("mq_timedsend on full queue did not block");
291 else if (errno != EINTR)
293 printf ("mq_timedsend on full queue did not fail with EINTR: %m\n");
297 memset (buf, ' ', sizeof (buf));
299 if (clock_gettime (CLOCK_REALTIME, &ts) != 0)
300 ts.tv_sec = time (NULL);
301 ts.tv_nsec = -1000000001;
302 rets = mq_timedreceive (q, buf, 2, &prio, &ts);
303 if (rets == -1 && errno == EINVAL)
304 rets = mq_receive (q, buf, 2, &prio);
308 printf ("mq_timedreceive failed: %m\n");
310 printf ("mq_timedreceive returned %zd != 2\n", rets);
313 else if (prio != 5 || memcmp (buf, "21 ", 3) != 0)
315 printf ("mq_timedreceive prio %u (5) buf \"%c%c%c\" (\"21 \")\n",
316 prio, buf[0], buf[1], buf[2]);
320 if (mq_receive (q, buf, 1, NULL) == 0)
322 puts ("mq_receive with too small msg_len did not fail");
325 else if (errno != EMSGSIZE)
327 printf ("mq_receive with too small msg_len did not fail with "
332 ts.tv_nsec = -ts.tv_nsec;
333 rets = mq_timedreceive (q, buf, 2, NULL, &ts);
334 if (rets == -1 && errno == EINVAL)
335 rets = mq_receive (q, buf, 2, NULL);
339 printf ("mq_timedreceive failed: %m\n");
341 printf ("mq_timedreceive returned %zd != 1\n", rets);
344 else if (memcmp (buf, "31 ", 3) != 0)
346 printf ("mq_timedreceive buf \"%c%c%c\" != \"31 \"\n",
347 buf[0], buf[1], buf[2]);
351 if (mq_send (q, "", 0, 2) != 0)
353 printf ("mq_send with msg_len 0 failed: %m\n");
357 rets = mq_receive (q, buf, 2, &prio);
361 printf ("mq_receive failed: %m\n");
363 printf ("mq_receive returned %zd != 0\n", rets);
367 long mq_prio_max = sysconf (_SC_MQ_PRIO_MAX);
368 if (mq_prio_max > 0 && (unsigned int) mq_prio_max == mq_prio_max)
370 if (mq_send (q, buf, 1, mq_prio_max) == 0)
372 puts ("mq_send with MQ_PRIO_MAX priority unpexpectedly succeeded");
375 else if (errno != EINVAL)
377 printf ("mq_send with MQ_PRIO_MAX priority did not fail with "
382 if (mq_send (q, buf, 1, mq_prio_max - 1) != 0)
384 printf ("mq_send with MQ_PRIO_MAX-1 priority failed: %m\n");
389 if (mq_unlink (name) != 0)
391 printf ("mq_unlink failed: %m\n");
395 q2 = mq_open (name, O_RDWR);
396 if (q2 != (mqd_t) -1)
398 printf ("mq_open of unlinked %s without O_CREAT unexpectedly"
399 "succeeded\n", name);
402 else if (errno != ENOENT)
404 printf ("mq_open of unlinked %s without O_CREAT did not fail with "
405 "ENOENT: %m\n", name);
409 if (mq_close (q) != 0)
411 printf ("mq_close in parent failed: %m\n");
415 if (mq_receive (q, buf, 2, NULL) == 0)
417 puts ("mq_receive on invalid mqd_t did not fail");
420 else if (errno != EBADF)
422 printf ("mq_receive on invalid mqd_t did not fail with EBADF: %m\n");
426 if (mq_send (q, buf, 1, 2) == 0)
428 puts ("mq_send on invalid mqd_t did not fail");
431 else if (errno != EBADF)
433 printf ("mq_send on invalid mqd_t did not fail with EBADF: %m\n");
437 if (mq_getattr (q, &attr) == 0)
439 puts ("mq_getattr on invalid mqd_t did not fail");
442 else if (errno != EBADF)
444 printf ("mq_getattr on invalid mqd_t did not fail with EBADF: %m\n");
448 memset (&attr, 0, sizeof (attr));
449 if (mq_setattr (q, &attr, NULL) == 0)
451 puts ("mq_setattr on invalid mqd_t did not fail");
454 else if (errno != EBADF)
456 printf ("mq_setattr on invalid mqd_t did not fail with EBADF: %m\n");
460 if (mq_unlink ("/tst-mqueue2-which-should-never-exist") != -1)
462 puts ("mq_unlink of non-existant message queue unexpectedly succeeded");
465 else if (errno != ENOENT)
467 printf ("mq_unlink of non-existant message queue did not fail with "
474 #include "../test-skeleton.c"