1  /* Check for large timeout with mq_timedsend and mq_timedreceive.
       2     Copyright (C) 2021-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       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.
       9  
      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.
      14  
      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/>.  */
      18  
      19  #include <errno.h>
      20  #include <intprops.h>
      21  #include <mqueue.h>
      22  #include <stdio.h>
      23  #include <support/check.h>
      24  #include <support/support.h>
      25  #include <support/temp_file.h>
      26  #include <unistd.h>
      27  
      28  static char name[sizeof "/tst-mqueue10-" + INT_BUFSIZE_BOUND (pid_t)];
      29  
      30  static void
      31  do_cleanup (void)
      32  {
      33    mq_unlink (name);
      34  }
      35  #define CLEANUP_HANDLER	do_cleanup
      36  
      37  static int
      38  do_test (void)
      39  {
      40    snprintf (name, sizeof (name), "/tst-mqueue10-%u", getpid ());
      41  
      42    char msg[8] = { 0x55 };
      43  
      44    struct mq_attr attr = { .mq_maxmsg = 1, .mq_msgsize = sizeof (msg) };
      45    mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_RDWR, 0600, &attr);
      46  
      47    if (q == (mqd_t) -1)
      48      {
      49        if (errno == ENOSYS)
      50  	FAIL_UNSUPPORTED ("mq_open not supported");
      51  
      52        printf ("mq_open failed with: %m\n");
      53        return 1;
      54      }
      55  
      56    struct timespec ts = { TYPE_MAXIMUM (time_t), 0 };
      57  
      58    {
      59      timer_t timer = support_create_timer (0, 100000000, false, NULL);
      60      TEST_COMPARE (mq_timedreceive (q, msg, sizeof (msg), NULL, &ts), -1);
      61      TEST_VERIFY (errno == EINTR || errno == EOVERFLOW);
      62      support_delete_timer (timer);
      63    }
      64  
      65    {
      66      timer_t timer = support_create_timer (0, 100000000, false, NULL);
      67      /* Fill the internal buffer first.  */
      68      TEST_COMPARE (mq_timedsend (q, msg, sizeof (msg), 0,
      69  				&(struct timespec) { 0, 0 }), 0);
      70      TEST_COMPARE (mq_timedsend (q, msg, sizeof (msg), 0, &ts), -1);
      71      TEST_VERIFY (errno == EINTR || errno == EOVERFLOW);
      72      support_delete_timer (timer);
      73    }
      74  
      75    mq_unlink (name);
      76  
      77    return 0;
      78  }
      79  
      80  #include <support/test-driver.c>