/* Test message queue passing. Copyright (C) 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek <jakub@redhat.com>, 2004. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ #include <errno.h> #include <fcntl.h> #include <mqueue.h> #include <signal.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/time.h> #include <sys/wait.h> #include <time.h> #include <unistd.h> #include "tst-mqueue.h" static void alrm_handler (int sig) { } #define TIMEOUT 10 #define TEST_FUNCTION do_test () static int do_test (void) { int result = 0; char name[sizeof "/tst-mqueue2-" + sizeof (pid_t) * 3]; snprintf (name, sizeof (name), "/tst-mqueue2-%u", getpid ()); struct mq_attr attr = { .mq_maxmsg = 2, .mq_msgsize = 2 }; mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr); if (q == (mqd_t) -1) { printf ("mq_open failed with: %m\n"); return result; } else add_temp_mq (name); mqd_t q2 = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr); if (q2 != (mqd_t) -1) { puts ("mq_open with O_EXCL unexpectedly succeeded"); result = 1; } else if (errno != EEXIST) { printf ("mq_open did not fail with EEXIST: %m\n"); result = 1; } char name2[sizeof "/tst-mqueue2-2-" + sizeof (pid_t) * 3]; snprintf (name2, sizeof (name2), "/tst-mqueue2-2-%u", getpid ()); attr.mq_maxmsg = -2; q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr); if (q2 != (mqd_t) -1) { puts ("mq_open with invalid mq_maxmsg unexpectedly succeeded"); add_temp_mq (name2); result = 1; } else if (errno != EINVAL) { printf ("mq_open with invalid mq_maxmsg did not fail with " "EINVAL: %m\n"); result = 1; } attr.mq_maxmsg = 2; attr.mq_msgsize = -56; q2 = mq_open (name2, O_CREAT | O_EXCL | O_RDWR, 0600, &attr); if (q2 != (mqd_t) -1) { puts ("mq_open with invalid mq_msgsize unexpectedly succeeded"); add_temp_mq (name2); result = 1; } else if (errno != EINVAL) { printf ("mq_open with invalid mq_msgsize did not fail with " "EINVAL: %m\n"); result = 1; } char buf[3]; struct timespec ts; if (clock_gettime (CLOCK_REALTIME, &ts) == 0) ts.tv_sec += 10; else { ts.tv_sec = time (NULL) + 10; ts.tv_nsec = 0; } if (mq_timedreceive (q, buf, 1, NULL, &ts) == 0) { puts ("mq_timedreceive with too small msg_len did not fail"); result = 1; } else if (errno != EMSGSIZE) { printf ("mq_timedreceive with too small msg_len did not fail with " "EMSGSIZE: %m\n"); result = 1; } ts.tv_nsec = -1; if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0) { puts ("mq_timedreceive with negative tv_nsec did not fail"); result = 1; } else if (errno != EINVAL) { printf ("mq_timedreceive with negative tv_nsec did not fail with " "EINVAL: %m\n"); result = 1; } ts.tv_nsec = 1000000000; if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0) { puts ("mq_timedreceive with tv_nsec >= 1000000000 did not fail"); result = 1; } else if (errno != EINVAL) { printf ("mq_timedreceive with tv_nsec >= 1000000000 did not fail with " "EINVAL: %m\n"); result = 1; } struct sigaction sa = { .sa_handler = alrm_handler, .sa_flags = 0 }; sigemptyset (&sa.sa_mask); sigaction (SIGALRM, &sa, NULL); struct itimerval it = { .it_value = { .tv_sec = 1 } }; setitimer (ITIMER_REAL, &it, NULL); if (mq_receive (q, buf, 2, NULL) == 0) { puts ("mq_receive on empty queue did not block"); result = 1; } else if (errno != EINTR) { printf ("mq_receive on empty queue did not fail with EINTR: %m\n"); result = 1; } setitimer (ITIMER_REAL, &it, NULL); ts.tv_nsec = 0; if (mq_timedreceive (q, buf, 2, NULL, &ts) == 0) { puts ("mq_timedreceive on empty queue did not block"); result = 1; } else if (errno != EINTR) { printf ("mq_timedreceive on empty queue did not fail with EINTR: %m\n"); result = 1; } buf[0] = '6'; buf[1] = '7'; if (mq_send (q, buf, 2, 3) != 0 || (buf[0] = '8', mq_send (q, buf, 1, 4) != 0)) { printf ("mq_send failed: %m\n"); result = 1; } memset (buf, ' ', sizeof (buf)); unsigned int prio; ssize_t rets = mq_receive (q, buf, 3, &prio); if (rets != 1) { if (rets == -1) printf ("mq_receive failed: %m\n"); else printf ("mq_receive returned %zd != 1\n", rets); result = 1; } else if (prio != 4 || memcmp (buf, "8 ", 3) != 0) { printf ("mq_receive prio %u (4) buf \"%c%c%c\" (\"8 \")\n", prio, buf[0], buf[1], buf[2]); result = 1; } rets = mq_receive (q, buf, 2, NULL); if (rets != 2) { if (rets == -1) printf ("mq_receive failed: %m\n"); else printf ("mq_receive returned %zd != 2\n", rets); result = 1; } else if (memcmp (buf, "67 ", 3) != 0) { printf ("mq_receive buf \"%c%c%c\" != \"67 \"\n", buf[0], buf[1], buf[2]); result = 1; } buf[0] = '2'; buf[1] = '1'; if (clock_gettime (CLOCK_REALTIME, &ts) != 0) ts.tv_sec = time (NULL); ts.tv_nsec = -1000000001; if ((mq_timedsend (q, buf, 2, 5, &ts) != 0 && (errno != EINVAL || mq_send (q, buf, 2, 5) != 0)) || (buf[0] = '3', ts.tv_nsec = -ts.tv_nsec, (mq_timedsend (q, buf, 1, 4, &ts) != 0 && (errno != EINVAL || mq_send (q, buf, 1, 4) != 0)))) { printf ("mq_timedsend failed: %m\n"); result = 1; } buf[0] = '-'; ts.tv_nsec = 1000000001; if (mq_timedsend (q, buf, 1, 6, &ts) == 0) { puts ("mq_timedsend with tv_nsec >= 1000000000 did not fail"); result = 1; } else if (errno != EINVAL) { printf ("mq_timedsend with tv_nsec >= 1000000000 did not fail with " "EINVAL: %m\n"); result = 1; } ts.tv_nsec = -2; if (mq_timedsend (q, buf, 1, 6, &ts) == 0) { puts ("mq_timedsend with negative tv_nsec did not fail"); result = 1; } else if (errno != EINVAL) { printf ("mq_timedsend with megatove tv_nsec did not fail with " "EINVAL: %m\n"); result = 1; } setitimer (ITIMER_REAL, &it, NULL); if (mq_send (q, buf, 2, 8) == 0) { puts ("mq_send on full queue did not block"); result = 1; } else if (errno != EINTR) { printf ("mq_send on full queue did not fail with EINTR: %m\n"); result = 1; } setitimer (ITIMER_REAL, &it, NULL); ts.tv_sec += 10; ts.tv_nsec = 0; if (mq_timedsend (q, buf, 2, 7, &ts) == 0) { puts ("mq_timedsend on full queue did not block"); result = 1; } else if (errno != EINTR) { printf ("mq_timedsend on full queue did not fail with EINTR: %m\n"); result = 1; } memset (buf, ' ', sizeof (buf)); if (clock_gettime (CLOCK_REALTIME, &ts) != 0) ts.tv_sec = time (NULL); ts.tv_nsec = -1000000001; rets = mq_timedreceive (q, buf, 2, &prio, &ts); if (rets == -1 && errno == EINVAL) rets = mq_receive (q, buf, 2, &prio); if (rets != 2) { if (rets == -1) printf ("mq_timedreceive failed: %m\n"); else printf ("mq_timedreceive returned %zd != 2\n", rets); result = 1; } else if (prio != 5 || memcmp (buf, "21 ", 3) != 0) { printf ("mq_timedreceive prio %u (5) buf \"%c%c%c\" (\"21 \")\n", prio, buf[0], buf[1], buf[2]); result = 1; } if (mq_receive (q, buf, 1, NULL) == 0) { puts ("mq_receive with too small msg_len did not fail"); result = 1; } else if (errno != EMSGSIZE) { printf ("mq_receive with too small msg_len did not fail with " "EMSGSIZE: %m\n"); result = 1; } ts.tv_nsec = -ts.tv_nsec; rets = mq_timedreceive (q, buf, 2, NULL, &ts); if (rets == -1 && errno == EINVAL) rets = mq_receive (q, buf, 2, NULL); if (rets != 1) { if (rets == -1) printf ("mq_timedreceive failed: %m\n"); else printf ("mq_timedreceive returned %zd != 1\n", rets); result = 1; } else if (memcmp (buf, "31 ", 3) != 0) { printf ("mq_timedreceive buf \"%c%c%c\" != \"31 \"\n", buf[0], buf[1], buf[2]); result = 1; } if (mq_send (q, "", 0, 2) != 0) { printf ("mq_send with msg_len 0 failed: %m\n"); result = 1; } rets = mq_receive (q, buf, 2, &prio); if (rets) { if (rets == -1) printf ("mq_receive failed: %m\n"); else printf ("mq_receive returned %zd != 0\n", rets); result = 1; } long mq_prio_max = sysconf (_SC_MQ_PRIO_MAX); if (mq_prio_max > 0 && (unsigned int) mq_prio_max == mq_prio_max) { if (mq_send (q, buf, 1, mq_prio_max) == 0) { puts ("mq_send with MQ_PRIO_MAX priority unpexpectedly succeeded"); result = 1; } else if (errno != EINVAL) { printf ("mq_send with MQ_PRIO_MAX priority did not fail with " "EINVAL: %m\n"); result = 1; } if (mq_send (q, buf, 1, mq_prio_max - 1) != 0) { printf ("mq_send with MQ_PRIO_MAX-1 priority failed: %m\n"); result = 1; } } if (mq_unlink (name) != 0) { printf ("mq_unlink failed: %m\n"); result = 1; } q2 = mq_open (name, O_RDWR); if (q2 != (mqd_t) -1) { printf ("mq_open of unlinked %s without O_CREAT unexpectedly" "succeeded\n", name); result = 1; } else if (errno != ENOENT) { printf ("mq_open of unlinked %s without O_CREAT did not fail with " "ENOENT: %m\n", name); result = 1; } if (mq_close (q) != 0) { printf ("mq_close in parent failed: %m\n"); result = 1; } if (mq_receive (q, buf, 2, NULL) == 0) { puts ("mq_receive on invalid mqd_t did not fail"); result = 1; } else if (errno != EBADF) { printf ("mq_receive on invalid mqd_t did not fail with EBADF: %m\n"); result = 1; } if (mq_send (q, buf, 1, 2) == 0) { puts ("mq_send on invalid mqd_t did not fail"); result = 1; } else if (errno != EBADF) { printf ("mq_send on invalid mqd_t did not fail with EBADF: %m\n"); result = 1; } if (mq_getattr (q, &attr) == 0) { puts ("mq_getattr on invalid mqd_t did not fail"); result = 1; } else if (errno != EBADF) { printf ("mq_getattr on invalid mqd_t did not fail with EBADF: %m\n"); result = 1; } memset (&attr, 0, sizeof (attr)); if (mq_setattr (q, &attr, NULL) == 0) { puts ("mq_setattr on invalid mqd_t did not fail"); result = 1; } else if (errno != EBADF) { printf ("mq_setattr on invalid mqd_t did not fail with EBADF: %m\n"); result = 1; } if (mq_unlink ("/tst-mqueue2-which-should-never-exist") != -1) { puts ("mq_unlink of non-existant message queue unexpectedly succeeded"); result = 1; } else if (errno != ENOENT) { printf ("mq_unlink of non-existant message queue did not fail with " "ENOENT: %m\n"); result = 1; } return result; } #include "../test-skeleton.c"