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- /* Test all open message queues descriptors are closed during exec*.
- 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, see
- <http://www.gnu.org/licenses/>. */
- #include <errno.h>
- #include <fcntl.h>
- #include <mqueue.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <sys/wait.h>
- #include <time.h>
- #include <unistd.h>
- #define OPT_AFTEREXEC 20000
- static mqd_t after_exec = (mqd_t) -1;
- #define CMDLINE_OPTIONS \
- "a:"
- #define CMDLINE_PROCESS \
- case 'a': \
- after_exec = (mqd_t) strtoul (optarg, NULL, 0); \
- break;
- static int
- do_after_exec (void)
- {
- int result = 0;
- struct mq_attr attr;
- if (mq_getattr (after_exec, &attr) == 0)
- {
- puts ("mq_getattr after exec unexpectedly succeeded");
- result = 1;
- }
- else if (errno != EBADF)
- {
- printf ("mq_getattr after exec did not fail with EBADF: %m\n");
- result = 1;
- }
- return result;
- }
- static int
- do_test (int argc, char **argv)
- {
- if (after_exec != (mqd_t) -1)
- return do_after_exec ();
- char name[sizeof "/tst-mqueue7-" + sizeof (pid_t) * 3];
- snprintf (name, sizeof (name), "/tst-mqueue7-%u", getpid ());
- struct mq_attr attr = { .mq_maxmsg = 10, .mq_msgsize = 1 };
- mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_WRONLY, 0600, &attr);
- if (q == (mqd_t) -1)
- {
- printf ("mq_open failed with: %m\n");
- return 0;
- }
- else if (mq_unlink (name) != 0)
- {
- printf ("mq_unlink failed with: %m\n");
- return 1;
- }
- if (mq_getattr (q, &attr) != 0)
- {
- printf ("mq_getattr failed: %m\n");
- return 1;
- }
- char after_exec_arg[sizeof "-a=0x" + sizeof (long) * 3];
- snprintf (after_exec_arg, sizeof (after_exec_arg),
- "-a=0x%lx", (long) q);
- const char *newargv[argc + 2];
- for (int i = 1; i < argc; ++i)
- newargv[i - 1] = argv[i];
- newargv[argc - 1] = "-d";
- newargv[argc] = after_exec_arg;
- newargv[argc + 1] = NULL;
- /* Verify that exec* has the effect of mq_close (q). */
- execv (newargv[0], (char * const *) newargv);
- printf ("execv failed: %m\n");
- return 1;
- }
- #include "../test-skeleton.c"
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