1 /* Test of posix_spawn() function.
2 Copyright (C) 2008-2020 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 <https://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 #define CHILD_PROGRAM_FILENAME "test-posix_spawn3"
42 #define DATA_FILENAME "t!#$%&'()*+,-;=?@[\\]^_`{|}~.tmp"
43 /* On Cygwin, '*' '?' '\\' '|' cannot be used in file names. */
44 #if defined __CYGWIN__
46 # define DATA_FILENAME "t!#$%&'()+,-;=@[]^_`{}~.tmp"
53 char *argv
[3] = { CHILD_PROGRAM_FILENAME
, "-child", NULL
};
54 posix_spawn_file_actions_t actions
;
55 bool actions_allocated
;
61 /* Create a data file with specific contents. */
62 fp
= fopen (DATA_FILENAME
, "wb");
65 perror ("cannot create data file");
68 fwrite ("Halle Potta", 1, 11, fp
);
69 if (fflush (fp
) || fclose (fp
))
71 perror ("cannot prepare data file");
75 /* Avoid reading from our stdin, as it could block. */
76 if (freopen ("/dev/null", "rb", stdin
) == NULL
)
78 perror ("cannot redirect stdin");
82 /* Test whether posix_spawn_file_actions_addopen with this file name
83 actually works, by spawning a child that reads from this file. */
84 actions_allocated
= false;
85 if ((err
= posix_spawn_file_actions_init (&actions
)) != 0
86 || (actions_allocated
= true,
87 (err
= posix_spawn_file_actions_addopen (&actions
, STDIN_FILENO
, DATA_FILENAME
, O_RDONLY
, 0600)) != 0
88 || (err
= posix_spawn (&child
, CHILD_PROGRAM_FILENAME
, &actions
, NULL
, argv
, environ
)) != 0))
90 if (actions_allocated
)
91 posix_spawn_file_actions_destroy (&actions
);
93 perror ("subprocess failed");
96 posix_spawn_file_actions_destroy (&actions
);
98 while (waitpid (child
, &status
, 0) != child
)
100 if (!WIFEXITED (status
))
102 fprintf (stderr
, "subprocess terminated with unexpected wait status %d\n", status
);
105 exitstatus
= WEXITSTATUS (status
);
108 fprintf (stderr
, "subprocess terminated with unexpected exit status %d\n", exitstatus
);
119 /* See if reading from STDIN_FILENO yields the expected contents. */
120 if (fread (buf
, 1, sizeof (buf
), stdin
) == 11
121 && memcmp (buf
, "Halle Potta", 11) == 0)
128 cleanup_then_die (int sig
)
130 /* Clean up data file. */
131 unlink (DATA_FILENAME
);
133 /* Re-raise the signal and die from it. */
134 signal (sig
, SIG_DFL
);
139 main (int argc
, char *argv
[])
143 if (!(argc
> 1 && strcmp (argv
[1], "-child") == 0))
145 /* This is the parent process. */
146 signal (SIGINT
, cleanup_then_die
);
147 signal (SIGTERM
, cleanup_then_die
);
149 signal (SIGHUP
, cleanup_then_die
);
152 exitstatus
= parent_main ();
156 /* This is the child process. */
158 exitstatus
= child_main ();
160 unlink (DATA_FILENAME
);