rt/tst-mqueue.h

   1 /* Common code for message queue passing tests.
   2    Copyright (C) 2004 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <mqueue.h>
  22 #include <search.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <sys/uio.h>
  27 #include <unistd.h>
  28
  29 static int temp_mq_fd;
  30
  31 /* Add temporary files in list.  */
  32 static void
  33 __attribute__ ((unused))
  34 add_temp_mq (const char *name)
  35 {
  36   struct iovec iov[2];
  37   iov[0].iov_base = (char *) name;
  38   iov[0].iov_len = strlen (name);
  39   iov[1].iov_base = (char *) "\n";
  40   iov[1].iov_len = 1;
  41   if (writev (temp_mq_fd, iov, 2) != iov[0].iov_len + 1)
  42     printf ("Could not record temp mq filename %s\n", name);
  43 }
  44
  45 /* Delete all temporary message queues.  */
  46 static void
  47 do_cleanup (void)
  48 {
  49   if (lseek (temp_mq_fd, 0, SEEK_SET) != 0)
  50     return;
  51
  52   FILE *f = fdopen (temp_mq_fd, "r");
  53   if (f == NULL)
  54     return;
  55
  56   char *line = NULL;
  57   size_t n = 0;
  58   ssize_t rets;
  59   while ((rets = getline (&line, &n, f)) > 0)
  60     {
  61       if (line[rets - 1] != '\n')
  62         continue;
  63
  64       line[rets - 1] = '\0';
  65       mq_unlink (line);
  66     }
  67   fclose (f);
  68 }
  69
  70 static void
  71 do_prepare (void)
  72 {
  73   char name [] = "/tmp/tst-mqueueN.XXXXXX";
  74   temp_mq_fd = mkstemp (name);
  75   if (temp_mq_fd == -1)
  76     {
  77       printf ("Could not create temporary file %s: %m\n", name);
  78       exit (1);
  79     }
  80   unlink (name);
  81 }
  82
  83 #define PREPARE(argc, argv) do_prepare ()
  84 #define CLEANUP_HANDLER do_cleanup ()