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1 | /* Test all open message queues descriptors are closed during exec*. |
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 <errno.h> | |
22 | #include <fcntl.h> | |
23 | #include <mqueue.h> | |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <sys/wait.h> | |
28 | #include <time.h> | |
29 | #include <unistd.h> | |
30 | ||
31 | #define OPT_AFTEREXEC 20000 | |
32 | ||
33 | static mqd_t after_exec = (mqd_t) -1; | |
34 | ||
35 | #define CMDLINE_OPTIONS \ | |
36 | { "after-exec", required_argument, NULL, OPT_AFTEREXEC }, | |
37 | ||
38 | #define CMDLINE_PROCESS \ | |
39 | case OPT_AFTEREXEC: \ | |
40 | after_exec = (mqd_t) strtoul (optarg, NULL, 0); \ | |
41 | break; | |
42 | ||
43 | static int | |
44 | do_after_exec (void) | |
45 | { | |
46 | int result = 0; | |
47 | ||
48 | struct mq_attr attr; | |
49 | if (mq_getattr (after_exec, &attr) == 0) | |
50 | { | |
51 | puts ("mq_getattr after exec unexpectedly succeeded"); | |
52 | result = 1; | |
53 | } | |
54 | else if (errno != EBADF) | |
55 | { | |
56 | printf ("mq_getattr after exec did not fail with EBADF: %m\n"); | |
57 | result = 1; | |
58 | } | |
59 | ||
60 | return result; | |
61 | } | |
62 | ||
63 | static int | |
64 | do_test (int argc, char **argv) | |
65 | { | |
66 | if (after_exec != (mqd_t) -1) | |
67 | return do_after_exec (); | |
68 | ||
69 | char name[sizeof "/tst-mqueue7-" + sizeof (pid_t) * 3]; | |
70 | snprintf (name, sizeof (name), "/tst-mqueue7-%u", getpid ()); | |
71 | ||
72 | struct mq_attr attr = { .mq_maxmsg = 10, .mq_msgsize = 1 }; | |
73 | mqd_t q = mq_open (name, O_CREAT | O_EXCL | O_WRONLY, 0600, &attr); | |
74 | ||
75 | if (q == (mqd_t) -1) | |
76 | { | |
77 | printf ("mq_open failed with: %m\n"); | |
78 | return 0; | |
79 | } | |
80 | else if (mq_unlink (name) != 0) | |
81 | { | |
82 | printf ("mq_unlink failed with: %m\n"); | |
83 | return 1; | |
84 | } | |
85 | ||
86 | if (mq_getattr (q, &attr) != 0) | |
87 | { | |
88 | printf ("mq_getattr failed: %m\n"); | |
89 | return 1; | |
90 | } | |
91 | ||
92 | char after_exec_arg[sizeof "--after-exec=0x" + sizeof (long) * 3]; | |
93 | snprintf (after_exec_arg, sizeof (after_exec_arg), | |
94 | "--after-exec=0x%lx", (long) q); | |
95 | ||
96 | char *newargv[argc + 2]; | |
97 | for (int i = 1; i < argc; ++i) | |
98 | newargv[i - 1] = argv[i]; | |
99 | newargv[argc - 1] = "--direct"; | |
100 | newargv[argc] = after_exec_arg; | |
101 | newargv[argc + 1] = NULL; | |
102 | ||
103 | /* Verify that exec* has the effect of mq_close (q). */ | |
104 | execv (newargv[0], (char * const *) newargv); | |
105 | printf ("execv failed: %m\n"); | |
106 | return 1; | |
107 | } | |
108 | ||
109 | #include "../test-skeleton.c" |