1 /* Test of posix_spawn() function.
2 Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2008. */
19 /* Test whether posix_spawn_file_actions_addopen supports filename arguments
20 that contain special characters such as '*'. */
26 #include "signature.h"
27 SIGNATURE_CHECK (posix_spawn, int, (pid_t *, char const *,
28 posix_spawn_file_actions_t const *,
29 posix_spawnattr_t const *,
30 char *const[], char *const[]));
38 #include <sys/types.h>
41 extern char **environ;
43 #define CHILD_PROGRAM_FILENAME "test-posix_spawn3"
44 #define DATA_FILENAME "t!#$%&'()*+,-;=?@[\\]^_`{|}~.tmp"
50 char *argv[3] = { CHILD_PROGRAM_FILENAME, "-child", NULL };
51 posix_spawn_file_actions_t actions;
52 bool actions_allocated;
58 /* Create a data file with specific contents. */
59 fp = fopen (DATA_FILENAME, "wb");
62 perror ("cannot create data file");
65 fwrite ("Halle Potta", 1, 11, fp);
66 if (fflush (fp) || fclose (fp))
68 perror ("cannot prepare data file");
72 /* Avoid reading from our stdin, as it could block. */
73 freopen ("/dev/null", "rb", stdin);
75 /* Test whether posix_spawn_file_actions_addopen with this file name
76 actually works, but spawning a child that reads from this file. */
77 actions_allocated = false;
78 if ((err = posix_spawn_file_actions_init (&actions)) != 0
79 || (actions_allocated = true,
80 (err = posix_spawn_file_actions_addopen (&actions, STDIN_FILENO, DATA_FILENAME, O_RDONLY, 0600)) != 0
81 || (err = posix_spawn (&child, CHILD_PROGRAM_FILENAME, &actions, NULL, argv, environ)) != 0))
83 if (actions_allocated)
84 posix_spawn_file_actions_destroy (&actions);
86 perror ("subprocess failed");
89 posix_spawn_file_actions_destroy (&actions);
91 while (waitpid (child, &status, 0) != child)
93 if (!WIFEXITED (status))
95 fprintf (stderr, "subprocess terminated with unexpected wait status %d\n", status);
98 exitstatus = WEXITSTATUS (status);
101 fprintf (stderr, "subprocess terminated with unexpected exit status %d\n", exitstatus);
112 /* See if reading from STDIN_FILENO yields the expected contents. */
113 if (fread (buf, 1, sizeof (buf), stdin) == 11
114 && memcmp (buf, "Halle Potta", 11) == 0)
121 cleanup_then_die (int sig)
123 /* Clean up data file. */
124 unlink (DATA_FILENAME);
126 /* Re-raise the signal and die from it. */
127 signal (sig, SIG_DFL);
132 main (int argc, char *argv[])
136 if (!(argc > 1 && strcmp (argv[1], "-child") == 0))
138 /* This is the parent process. */
139 signal (SIGINT, cleanup_then_die);
140 signal (SIGTERM, cleanup_then_die);
142 signal (SIGHUP, cleanup_then_die);
145 exitstatus = parent_main ();
149 /* This is the child process. */
151 exitstatus = child_main ();
153 unlink (DATA_FILENAME);