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. */
31 #include <sys/types.h>
34 extern char **environ;
36 #define CHILD_PROGRAM_FILENAME "test-posix_spawn1.sh"
41 if (0 <= fd && fd <= 2)
43 int f = fd_safer (dup (fd));
56 char *argv[3] = { "/bin/sh", CHILD_PROGRAM_FILENAME, NULL };
58 sigset_t blocked_signals;
59 sigset_t fatal_signal_set;
60 posix_spawn_file_actions_t actions;
61 bool actions_allocated;
62 posix_spawnattr_t attrs;
72 if (pipe (ifd) < 0 || (ifd[0] = fd_safer (ifd[0])) < 0)
74 perror ("cannot create pipe");
77 sigprocmask (SIG_SETMASK, NULL, &blocked_signals);
78 sigemptyset (&fatal_signal_set);
79 sigaddset (&fatal_signal_set, SIGINT);
80 sigaddset (&fatal_signal_set, SIGTERM);
81 sigaddset (&fatal_signal_set, SIGHUP);
82 sigaddset (&fatal_signal_set, SIGPIPE);
83 sigprocmask (SIG_BLOCK, &fatal_signal_set, NULL);
84 actions_allocated = false;
85 attrs_allocated = false;
86 if ((err = posix_spawn_file_actions_init (&actions)) != 0
87 || (actions_allocated = true,
88 (err = posix_spawn_file_actions_adddup2 (&actions, ifd[1], STDOUT_FILENO)) != 0
89 || (err = posix_spawn_file_actions_addclose (&actions, ifd[1])) != 0
90 || (err = posix_spawn_file_actions_addclose (&actions, ifd[0])) != 0
91 || (err = posix_spawn_file_actions_addopen (&actions, STDIN_FILENO, "/dev/null", O_RDONLY, 0)) != 0
92 || (err = posix_spawnattr_init (&attrs)) != 0
93 || (attrs_allocated = true,
94 (err = posix_spawnattr_setsigmask (&attrs, &blocked_signals)) != 0
95 || (err = posix_spawnattr_setflags (&attrs, POSIX_SPAWN_SETSIGMASK)) != 0)
96 || (err = posix_spawnp (&child, "/bin/sh", &actions, &attrs, argv, environ)) != 0))
98 if (actions_allocated)
99 posix_spawn_file_actions_destroy (&actions);
101 posix_spawnattr_destroy (&attrs);
102 sigprocmask (SIG_UNBLOCK, &fatal_signal_set, NULL);
104 perror ("subprocess failed");
107 posix_spawn_file_actions_destroy (&actions);
108 posix_spawnattr_destroy (&attrs);
109 sigprocmask (SIG_UNBLOCK, &fatal_signal_set, NULL);
112 fp = fdopen (fd, "r");
115 fprintf (stderr, "fdopen() failed\n");
118 if (fread (line, 1, 80, fp) < 12)
120 fprintf (stderr, "could not read expected output\n");
123 if (memcmp (line, "Halle Potta", 11) != 0)
125 fprintf (stderr, "read output is not the expected output");
130 while (waitpid (child, &status, 0) != child)
132 if (!WIFEXITED (status))
134 fprintf (stderr, "subprocess terminated with unexpected wait status %d\n", status);
137 exitstatus = WEXITSTATUS (status);
140 fprintf (stderr, "subprocess terminated with unexpected exit status %d\n", exitstatus);