Mercurial > gnulib
annotate tests/test-posix_spawn2.c @ 40057:b06060465f09
maint: Run 'make update-copyright'
| author | Paul Eggert <eggert@cs.ucla.edu> |
|---|---|
| date | Tue, 01 Jan 2019 00:25:11 +0100 |
| parents | cd549182ef0e |
| children |
| rev | line source |
|---|---|
| 10547 | 1 /* Test of posix_spawn() function. |
|
40057
b06060465f09
maint: Run 'make update-copyright'
Paul Eggert <eggert@cs.ucla.edu>
parents:
39883
diff
changeset
|
2 Copyright (C) 2008-2019 Free Software Foundation, Inc. |
| 10547 | 3 |
| 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. | |
| 8 | |
| 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. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
| 19190 | 15 along with this program. If not, see <https://www.gnu.org/licenses/>. */ |
| 10547 | 16 |
| 17 /* Written by Bruno Haible <bruno@clisp.org>, 2008. */ | |
| 18 | |
| 19 #include <config.h> | |
| 20 | |
| 21 #include <spawn.h> | |
| 22 | |
| 23 #include <errno.h> | |
| 24 #include <fcntl.h> | |
| 25 #include <signal.h> | |
| 26 #include <stdbool.h> | |
| 27 #include <stdio.h> | |
| 28 #include <stdlib.h> | |
| 29 #include <string.h> | |
| 30 #include <unistd.h> | |
| 31 #include <sys/types.h> | |
| 32 #include <sys/wait.h> | |
| 33 | |
| 34 #define CHILD_PROGRAM_FILENAME "test-posix_spawn2.sh" | |
| 35 | |
| 36 static int | |
| 37 fd_safer (int fd) | |
| 38 { | |
| 39 if (0 <= fd && fd <= 2) | |
| 40 { | |
| 41 int f = fd_safer (dup (fd)); | |
| 42 int e = errno; | |
| 43 close (fd); | |
| 44 errno = e; | |
| 45 fd = f; | |
| 46 } | |
| 47 | |
| 48 return fd; | |
| 10548 | 49 } |
| 10547 | 50 |
| 51 int | |
| 52 main () | |
| 53 { | |
| 39883 | 54 char *argv[3] = { (char *) BOURNE_SHELL, (char *) CHILD_PROGRAM_FILENAME, NULL }; |
| 10547 | 55 int ofd[2]; |
| 56 sigset_t blocked_signals; | |
| 57 sigset_t fatal_signal_set; | |
| 58 posix_spawn_file_actions_t actions; | |
| 59 bool actions_allocated; | |
| 60 posix_spawnattr_t attrs; | |
| 61 bool attrs_allocated; | |
| 62 int err; | |
| 63 pid_t child; | |
| 64 int fd; | |
| 65 FILE *fp; | |
| 66 int written; | |
| 67 int status; | |
| 68 int exitstatus; | |
| 69 | |
| 70 if (pipe (ofd) < 0 || (ofd[1] = fd_safer (ofd[1])) < 0) | |
| 71 { | |
| 72 perror ("cannot create pipe"); | |
| 73 exit (1); | |
| 74 } | |
| 75 sigprocmask (SIG_SETMASK, NULL, &blocked_signals); | |
| 76 sigemptyset (&fatal_signal_set); | |
| 77 sigaddset (&fatal_signal_set, SIGINT); | |
| 78 sigaddset (&fatal_signal_set, SIGTERM); | |
| 79 sigaddset (&fatal_signal_set, SIGHUP); | |
| 80 sigaddset (&fatal_signal_set, SIGPIPE); | |
| 81 sigprocmask (SIG_BLOCK, &fatal_signal_set, NULL); | |
| 82 actions_allocated = false; | |
| 83 attrs_allocated = false; | |
| 84 if ((err = posix_spawn_file_actions_init (&actions)) != 0 | |
| 85 || (actions_allocated = true, | |
| 86 (err = posix_spawn_file_actions_adddup2 (&actions, ofd[0], STDIN_FILENO)) != 0 | |
| 87 || (err = posix_spawn_file_actions_addclose (&actions, ofd[0])) != 0 | |
| 88 || (err = posix_spawn_file_actions_addclose (&actions, ofd[1])) != 0 | |
| 89 || (err = posix_spawnattr_init (&attrs)) != 0 | |
| 90 || (attrs_allocated = true, | |
| 91 (err = posix_spawnattr_setsigmask (&attrs, &blocked_signals)) != 0 | |
| 92 || (err = posix_spawnattr_setflags (&attrs, POSIX_SPAWN_SETSIGMASK)) != 0) | |
| 39883 | 93 || (err = posix_spawnp (&child, BOURNE_SHELL, &actions, &attrs, argv, environ)) != 0)) |
| 10547 | 94 { |
| 95 if (actions_allocated) | |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
11049
diff
changeset
|
96 posix_spawn_file_actions_destroy (&actions); |
| 10547 | 97 if (attrs_allocated) |
|
12421
e8d2c6fc33ad
Use spaces for indentation, not tabs.
Bruno Haible <bruno@clisp.org>
parents:
11049
diff
changeset
|
98 posix_spawnattr_destroy (&attrs); |
| 10547 | 99 sigprocmask (SIG_UNBLOCK, &fatal_signal_set, NULL); |
| 100 errno = err; | |
| 101 perror ("subprocess failed"); | |
| 102 exit (1); | |
| 103 } | |
| 104 posix_spawn_file_actions_destroy (&actions); | |
| 105 posix_spawnattr_destroy (&attrs); | |
| 106 sigprocmask (SIG_UNBLOCK, &fatal_signal_set, NULL); | |
| 107 close (ofd[0]); | |
| 108 fd = ofd[1]; | |
| 109 fp = fdopen (fd, "w"); | |
| 110 if (fp == NULL) | |
| 111 { | |
| 112 fprintf (stderr, "fdopen() failed\n"); | |
| 113 exit (1); | |
| 114 } | |
| 115 written = fwrite ("Halle Potta\n", 1, 12, fp); | |
| 116 if (written < 12) | |
| 117 { | |
| 118 fprintf (stderr, "could not write input\n"); | |
| 119 exit (1); | |
| 120 } | |
| 121 fclose (fp); | |
| 122 status = 0; | |
| 123 while (waitpid (child, &status, 0) != child) | |
| 124 ; | |
| 125 if (!WIFEXITED (status)) | |
| 126 { | |
| 127 fprintf (stderr, "subprocess terminated with unexpected wait status %d\n", status); | |
| 128 exit (1); | |
| 129 } | |
| 130 exitstatus = WEXITSTATUS (status); | |
| 131 if (exitstatus != 0) | |
| 132 { | |
| 133 fprintf (stderr, "subprocess terminated with unexpected exit status %d\n", exitstatus); | |
| 134 exit (1); | |
| 135 } | |
| 136 return 0; | |
| 137 } |