1 /* Test of posix_spawn() function.
2 Copyright (C) 2008, 2009 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 '*'. */
33 #include <sys/types.h>
36 extern char **environ;
38 #define CHILD_PROGRAM_FILENAME "test-posix_spawn3"
39 #define DATA_FILENAME "t!#$%&'()*+,-;=?@[\\]^_`{|}~.tmp"
45 char *argv[3] = { CHILD_PROGRAM_FILENAME, "-child", NULL };
46 posix_spawn_file_actions_t actions;
47 bool actions_allocated;
53 /* Create a data file with specific contents. */
54 fp = fopen (DATA_FILENAME, "wb");
57 perror ("cannot create data file");
60 fwrite ("Halle Potta", 1, 11, fp);
61 if (fflush (fp) || fclose (fp))
63 perror ("cannot prepare data file");
67 /* Avoid reading from our stdin, as it could block. */
68 freopen ("/dev/null", "rb", stdin);
70 /* Test whether posix_spawn_file_actions_addopen with this file name
71 actually works, but spawning a child that reads from this file. */
72 actions_allocated = false;
73 if ((err = posix_spawn_file_actions_init (&actions)) != 0
74 || (actions_allocated = true,
75 (err = posix_spawn_file_actions_addopen (&actions, STDIN_FILENO, DATA_FILENAME, O_RDONLY, 0600)) != 0
76 || (err = posix_spawn (&child, CHILD_PROGRAM_FILENAME, &actions, NULL, argv, environ)) != 0))
78 if (actions_allocated)
79 posix_spawn_file_actions_destroy (&actions);
81 perror ("subprocess failed");
84 posix_spawn_file_actions_destroy (&actions);
86 while (waitpid (child, &status, 0) != child)
88 if (!WIFEXITED (status))
90 fprintf (stderr, "subprocess terminated with unexpected wait status %d\n", status);
93 exitstatus = WEXITSTATUS (status);
96 fprintf (stderr, "subprocess terminated with unexpected exit status %d\n", exitstatus);
107 /* See if reading from STDIN_FILENO yields the expected contents. */
108 if (fread (buf, 1, sizeof (buf), stdin) == 11
109 && memcmp (buf, "Halle Potta", 11) == 0)
116 cleanup_then_die (int sig)
118 /* Clean up data file. */
119 unlink (DATA_FILENAME);
121 /* Re-raise the signal and die from it. */
122 signal (sig, SIG_DFL);
127 main (int argc, char *argv[])
131 if (!(argc > 1 && strcmp (argv[1], "-child") == 0))
133 /* This is the parent process. */
134 signal (SIGINT, cleanup_then_die);
135 signal (SIGTERM, cleanup_then_die);
137 signal (SIGHUP, cleanup_then_die);
140 exitstatus = parent_main ();
144 /* This is the child process. */
146 exitstatus = child_main ();
148 unlink (DATA_FILENAME);