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109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/* Test all open message queues descriptors are closed during exec*.
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Copyright (C) 2004-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2004.
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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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#define OPT_AFTEREXEC 20000
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static mqd_t after_exec = (mqd_t) -1;
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#define CMDLINE_OPTIONS \
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{ "after-exec", required_argument, NULL, OPT_AFTEREXEC },
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#define CMDLINE_PROCESS \
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case OPT_AFTEREXEC: \
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after_exec = (mqd_t) strtoul (optarg, NULL, 0); \
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break;
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static int
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do_after_exec (void)
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{
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int result = 0;
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struct mq_attr attr;
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if (mq_getattr (after_exec, &attr) == 0)
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{
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puts ("mq_getattr after exec 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_getattr after exec 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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static int
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do_test (int argc, char **argv)
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{
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if (after_exec != (mqd_t) -1)
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return do_after_exec ();
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char name[sizeof "/tst-mqueue7-" + sizeof (pid_t) * 3];
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snprintf (name, sizeof (name), "/tst-mqueue7-%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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printf ("mq_open failed with: %m\n");
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return 0;
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}
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else if (mq_unlink (name) != 0)
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{
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printf ("mq_unlink failed with: %m\n");
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return 1;
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}
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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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return 1;
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}
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char after_exec_arg[sizeof "--after-exec=0x" + sizeof (long) * 3];
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snprintf (after_exec_arg, sizeof (after_exec_arg),
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"--after-exec=0x%lx", (long) q);
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const char *newargv[argc + 2];
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for (int i = 1; i < argc; ++i)
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newargv[i - 1] = argv[i];
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newargv[argc - 1] = "--direct";
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newargv[argc] = after_exec_arg;
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newargv[argc + 1] = NULL;
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/* Verify that exec* has the effect of mq_close (q). */
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execv (newargv[0], (char * const *) newargv);
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printf ("execv failed: %m\n");
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return 1;
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}
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#include "../test-skeleton.c"
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