mirror of
https://sourceware.org/git/glibc.git
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422 lines
9.2 KiB
C
422 lines
9.2 KiB
C
/* Test message queue passing.
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Copyright (C) 2004-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fcntl.h>
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#include <mqueue.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/wait.h>
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#include <time.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <support/check.h>
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#include "tst-mqueue.h"
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static int
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intcmp (const void *a, const void *b)
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{
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if (*(unsigned char *)a < *(unsigned char *)b)
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return 1;
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if (*(unsigned char *)a > *(unsigned char *)b)
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return -1;
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return 0;
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}
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static int
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check_attrs (struct mq_attr *attr, int nonblock, long cnt)
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{
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int result = 0;
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if (attr->mq_maxmsg != 10 || attr->mq_msgsize != 1)
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{
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printf ("attributes don't match those passed to mq_open\n"
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"mq_maxmsg %jd, mq_msgsize %jd\n",
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(intmax_t) attr->mq_maxmsg, (intmax_t) attr->mq_msgsize);
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result = 1;
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}
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if ((attr->mq_flags & O_NONBLOCK) != nonblock)
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{
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printf ("mq_flags %jx != %x\n",
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(intmax_t) (attr->mq_flags & O_NONBLOCK), nonblock);
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result = 1;
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}
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if (attr->mq_curmsgs != cnt)
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{
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printf ("mq_curmsgs %jd != %ld\n", (intmax_t) attr->mq_curmsgs, cnt);
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result = 1;
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}
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return result;
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}
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static int
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do_one_test (mqd_t q, const char *name, int nonblock)
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{
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int result = 0;
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unsigned char v []
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= { 0x32, 0x62, 0x22, 0x31, 0x11, 0x73, 0x61, 0x21, 0x72, 0x71, 0x81 };
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struct mq_attr attr;
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memset (&attr, 0xaa, sizeof (attr));
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if (mq_getattr (q, &attr) != 0)
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{
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printf ("mq_getattr failed: %m\n");
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result = 1;
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}
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else
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result |= check_attrs (&attr, nonblock, 0);
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if (mq_receive (q, (char *) &v[0], 1, NULL) != -1)
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{
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puts ("mq_receive on O_WRONLY mqd_t unexpectedly succeeded");
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result = 1;
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}
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else if (errno != EBADF)
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{
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printf ("mq_receive on O_WRONLY mqd_t did not fail with EBADF: %m\n");
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result = 1;
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}
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struct timespec ts;
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if (clock_gettime (CLOCK_REALTIME, &ts) == 0)
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--ts.tv_sec;
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else
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{
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ts.tv_sec = time (NULL) - 1;
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ts.tv_nsec = 0;
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}
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int ret;
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for (int i = 0; i < 10; ++i)
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{
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if (i & 1)
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ret = mq_send (q, (char *) &v[i], 1, v[i] >> 4);
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else
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ret = mq_timedsend (q, (char *) &v[i], 1, v[i] >> 4, &ts);
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if (ret)
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{
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printf ("mq_%ssend failed: %m\n", (i & 1) ? "" : "timed");
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result = 1;
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}
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}
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ret = mq_timedsend (q, (char *) &v[10], 1, 8, &ts);
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if (ret != -1)
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{
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puts ("mq_timedsend on full queue did not fail");
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result = 1;
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}
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else if (errno != (nonblock ? EAGAIN : ETIMEDOUT))
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{
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printf ("mq_timedsend on full queue did not fail with %s: %m\n",
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nonblock ? "EAGAIN" : "ETIMEDOUT");
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result = 1;
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}
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if (nonblock)
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{
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ret = mq_send (q, (char *) &v[10], 1, 8);
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if (ret != -1)
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{
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puts ("mq_send on full non-blocking queue did not fail");
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result = 1;
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}
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else if (errno != EAGAIN)
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{
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printf ("mq_send on full non-blocking queue did not fail"
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"with EAGAIN: %m\n");
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result = 1;
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}
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}
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memset (&attr, 0xaa, sizeof (attr));
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if (mq_getattr (q, &attr) != 0)
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{
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printf ("mq_getattr failed: %m\n");
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result = 1;
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}
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else
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result |= check_attrs (&attr, nonblock, 10);
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pid_t pid = fork ();
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if (pid == -1)
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{
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printf ("fork failed: %m\n");
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result = 1;
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}
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else if (pid == 0)
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{
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result = 0;
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if (mq_close (q) != 0)
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{
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printf ("mq_close in child failed: %m\n");
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result = 1;
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}
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q = mq_open (name, O_RDONLY | nonblock);
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if (q == (mqd_t) -1)
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{
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printf ("mq_open in child failed: %m\n");
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exit (1);
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}
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memset (&attr, 0xaa, sizeof (attr));
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if (mq_getattr (q, &attr) != 0)
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{
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printf ("mq_getattr failed: %m\n");
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result = 1;
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}
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else
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result |= check_attrs (&attr, nonblock, 10);
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unsigned char vr[11] = { };
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unsigned int prio;
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ssize_t rets;
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if (mq_send (q, (char *) &v[0], 1, 1) != -1)
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{
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puts ("mq_send on O_RDONLY mqd_t unexpectedly succeeded");
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result = 1;
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}
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else if (errno != EBADF)
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{
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printf ("mq_send on O_WRONLY mqd_t did not fail with EBADF: %m\n");
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result = 1;
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}
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for (int i = 0; i < 10; ++i)
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{
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if (i & 1)
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rets = mq_receive (q, (char *) &vr[i], 1, &prio);
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else
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rets = mq_timedreceive (q, (char *) &vr[i], 1, &prio, &ts);
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if (rets != 1)
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{
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if (rets == -1)
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printf ("mq_%sreceive failed: %m\n", (i & 1) ? "" : "timed");
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else
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printf ("mq_%sreceive returned %zd != 1\n",
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(i & 1) ? "" : "timed", rets);
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result = 1;
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}
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else if (prio != (unsigned int) vr[i] >> 4)
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{
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printf ("unexpected priority %x for value %02x\n", prio,
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vr[i]);
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result = 1;
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}
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}
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qsort (v, 10, 1, intcmp);
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if (memcmp (v, vr, 10) != 0)
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{
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puts ("messages not received in expected order");
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result = 1;
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}
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rets = mq_timedreceive (q, (char *) &vr[10], 1, &prio, &ts);
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if (rets != -1)
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{
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puts ("mq_timedreceive on empty queue did not fail");
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result = 1;
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}
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else if (errno != (nonblock ? EAGAIN : ETIMEDOUT))
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{
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printf ("mq_timedreceive on empty queue did not fail with %s: %m\n",
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nonblock ? "EAGAIN" : "ETIMEDOUT");
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result = 1;
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}
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if (nonblock)
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{
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ret = mq_receive (q, (char *) &vr[10], 1, &prio);
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if (ret != -1)
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{
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puts ("mq_receive on empty non-blocking queue did not fail");
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result = 1;
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}
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else if (errno != EAGAIN)
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{
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printf ("mq_receive on empty non-blocking queue did not fail"
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"with EAGAIN: %m\n");
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result = 1;
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}
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}
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memset (&attr, 0xaa, sizeof (attr));
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if (mq_getattr (q, &attr) != 0)
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{
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printf ("mq_getattr failed: %m\n");
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result = 1;
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}
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else
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result |= check_attrs (&attr, nonblock, 0);
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if (mq_close (q) != 0)
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{
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printf ("mq_close in child failed: %m\n");
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result = 1;
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}
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exit (result);
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}
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int status;
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if (TEMP_FAILURE_RETRY (waitpid (pid, &status, 0)) != pid)
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{
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printf ("waitpid failed: %m\n");
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kill (pid, SIGKILL);
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result = 1;
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}
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else if (!WIFEXITED (status) || WEXITSTATUS (status))
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{
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printf ("child failed: %d\n", status);
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result = 1;
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}
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memset (&attr, 0xaa, sizeof (attr));
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if (mq_getattr (q, &attr) != 0)
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{
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printf ("mq_getattr failed: %m\n");
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result = 1;
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}
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else
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result |= check_attrs (&attr, nonblock, 0);
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return result;
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}
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#define TEST_FUNCTION do_test ()
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static int
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do_test (void)
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{
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int result = 0;
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char name[sizeof "/tst-mqueue1-" + sizeof (pid_t) * 3];
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snprintf (name, sizeof (name), "/tst-mqueue1-%u", getpid ());
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struct mq_attr attr = { .mq_maxmsg = 10, .mq_msgsize = 1 };
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mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_WRONLY, 0600, &attr);
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if (q == (mqd_t) -1)
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{
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if (errno == ENOSYS)
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FAIL_UNSUPPORTED ("mq_open not supported");
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printf ("mq_open failed with: %m\n");
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return 1;
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}
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add_temp_mq (name);
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result |= do_one_test (q, name, 0);
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mqd_t q2 = mq_open (name, O_WRONLY | O_NONBLOCK);
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if (q2 == (mqd_t) -1)
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{
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printf ("mq_open failed with: %m\n");
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q2 = q;
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result = 1;
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}
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else
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{
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if (mq_close (q) != 0)
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{
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printf ("mq_close in parent failed: %m\n");
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result = 1;
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}
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q = q2;
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result |= do_one_test (q, name, O_NONBLOCK);
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if (mq_getattr (q, &attr) != 0)
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{
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printf ("mq_getattr failed: %m\n");
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result = 1;
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}
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else
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{
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attr.mq_flags ^= O_NONBLOCK;
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struct mq_attr attr2;
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memset (&attr2, 0x55, sizeof (attr2));
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if (mq_setattr (q, &attr, &attr2) != 0)
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{
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printf ("mq_setattr failed: %m\n");
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result = 1;
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}
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else if (attr.mq_flags != (attr2.mq_flags ^ O_NONBLOCK)
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|| attr.mq_maxmsg != attr2.mq_maxmsg
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|| attr.mq_msgsize != attr2.mq_msgsize
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|| attr.mq_curmsgs != 0
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|| attr2.mq_curmsgs != 0)
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{
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puts ("mq_setattr returned unexpected values in *omqstat");
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result = 1;
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}
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else
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{
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result |= do_one_test (q, name, 0);
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if (mq_setattr (q, &attr2, NULL) != 0)
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{
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printf ("mq_setattr failed: %m\n");
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result = 1;
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}
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else
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result |= do_one_test (q, name, O_NONBLOCK);
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}
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}
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}
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if (mq_unlink (name) != 0)
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{
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printf ("mq_unlink failed: %m\n");
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result = 1;
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}
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if (mq_close (q) != 0)
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{
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printf ("mq_close in parent failed: %m\n");
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result = 1;
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}
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if (mq_close (q) != -1)
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{
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puts ("second mq_close did not fail");
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result = 1;
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}
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else if (errno != EBADF)
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{
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printf ("second mq_close did not fail with EBADF: %m\n");
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result = 1;
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}
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return result;
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}
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#include "../test-skeleton.c"
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