rt/tst-mqueue10.c

   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>