/* 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:" /* { "after-exec", required_argument, NULL, OPT_AFTEREXEC }, */ #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"