Mercurial > hg > octave-lojdl > gnulib-hg
annotate tests/test-posix_spawn3.c @ 16465:c0803728f645
New module 'modfl-ieee'.
* modules/modfl-ieee: New file.
| author | Bruno Haible <bruno@clisp.org> |
|---|---|
| date | Sun, 26 Feb 2012 17:55:31 +0100 |
| parents | 8250f2777afc |
| children | e542fd46ad6f |
| rev | line source |
|---|---|
| 10687 | 1 /* Test of posix_spawn() function. |
|
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Jim Meyering <meyering@redhat.com>
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2 Copyright (C) 2008-2012 Free Software Foundation, Inc. |
| 10687 | 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 | |
| 15 along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
| 16 | |
| 17 /* Written by Bruno Haible <bruno@clisp.org>, 2008. */ | |
| 18 | |
| 19 /* Test whether posix_spawn_file_actions_addopen supports filename arguments | |
| 20 that contain special characters such as '*'. */ | |
| 21 | |
| 22 #include <config.h> | |
| 23 | |
| 24 #include <spawn.h> | |
| 25 | |
| 12489 | 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[])); | |
| 10687 | 31 #include <errno.h> |
| 32 #include <fcntl.h> | |
| 33 #include <signal.h> | |
| 34 #include <stdbool.h> | |
| 35 #include <stdio.h> | |
| 36 #include <string.h> | |
| 37 #include <unistd.h> | |
| 38 #include <sys/types.h> | |
| 39 #include <sys/wait.h> | |
| 40 | |
| 41 extern char **environ; | |
| 42 | |
| 43 #define CHILD_PROGRAM_FILENAME "test-posix_spawn3" | |
| 44 #define DATA_FILENAME "t!#$%&'()*+,-;=?@[\\]^_`{|}~.tmp" | |
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45 /* On Cygwin, '*' '?' '\\' '|' cannot be used in file names. */ |
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46 #if defined __CYGWIN__ |
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47 # undef DATA_FILENAME |
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Bruno Haible <bruno@clisp.org>
parents:
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diff
changeset
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48 # define DATA_FILENAME "t!#$%&'()+,-;=@[]^_`{}~.tmp" |
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28283035637b
posix_spawn: Avoid test failure on Cygwin.
Bruno Haible <bruno@clisp.org>
parents:
12559
diff
changeset
|
49 #endif |
| 10687 | 50 |
| 51 static int | |
| 52 parent_main (void) | |
| 53 { | |
| 54 FILE *fp; | |
| 55 char *argv[3] = { CHILD_PROGRAM_FILENAME, "-child", NULL }; | |
| 56 posix_spawn_file_actions_t actions; | |
| 57 bool actions_allocated; | |
| 58 int err; | |
| 59 pid_t child; | |
| 60 int status; | |
| 61 int exitstatus; | |
| 62 | |
| 63 /* Create a data file with specific contents. */ | |
| 64 fp = fopen (DATA_FILENAME, "wb"); | |
| 65 if (fp == NULL) | |
| 66 { | |
| 67 perror ("cannot create data file"); | |
| 68 return 1; | |
| 69 } | |
| 70 fwrite ("Halle Potta", 1, 11, fp); | |
| 71 if (fflush (fp) || fclose (fp)) | |
| 72 { | |
| 73 perror ("cannot prepare data file"); | |
| 74 return 1; | |
| 75 } | |
| 76 | |
| 77 /* Avoid reading from our stdin, as it could block. */ | |
| 78 freopen ("/dev/null", "rb", stdin); | |
| 79 | |
| 80 /* Test whether posix_spawn_file_actions_addopen with this file name | |
| 81 actually works, but spawning a child that reads from this file. */ | |
| 82 actions_allocated = false; | |
| 83 if ((err = posix_spawn_file_actions_init (&actions)) != 0 | |
| 84 || (actions_allocated = true, | |
| 85 (err = posix_spawn_file_actions_addopen (&actions, STDIN_FILENO, DATA_FILENAME, O_RDONLY, 0600)) != 0 | |
| 86 || (err = posix_spawn (&child, CHILD_PROGRAM_FILENAME, &actions, NULL, argv, environ)) != 0)) | |
| 87 { | |
| 88 if (actions_allocated) | |
| 89 posix_spawn_file_actions_destroy (&actions); | |
| 90 errno = err; | |
| 91 perror ("subprocess failed"); | |
| 92 return 1; | |
| 93 } | |
| 94 posix_spawn_file_actions_destroy (&actions); | |
| 95 status = 0; | |
| 96 while (waitpid (child, &status, 0) != child) | |
| 97 ; | |
| 98 if (!WIFEXITED (status)) | |
| 99 { | |
| 100 fprintf (stderr, "subprocess terminated with unexpected wait status %d\n", status); | |
| 101 return 1; | |
| 102 } | |
| 103 exitstatus = WEXITSTATUS (status); | |
| 104 if (exitstatus != 0) | |
| 105 { | |
| 106 fprintf (stderr, "subprocess terminated with unexpected exit status %d\n", exitstatus); | |
| 107 return 1; | |
| 108 } | |
| 109 return 0; | |
| 110 } | |
| 111 | |
| 112 static int | |
| 113 child_main (void) | |
| 114 { | |
| 115 char buf[1024]; | |
| 116 | |
| 117 /* See if reading from STDIN_FILENO yields the expected contents. */ | |
| 118 if (fread (buf, 1, sizeof (buf), stdin) == 11 | |
| 119 && memcmp (buf, "Halle Potta", 11) == 0) | |
| 120 return 0; | |
| 121 else | |
| 122 return 2; | |
| 123 } | |
| 124 | |
| 125 static void | |
| 126 cleanup_then_die (int sig) | |
| 127 { | |
| 128 /* Clean up data file. */ | |
| 129 unlink (DATA_FILENAME); | |
| 130 | |
| 131 /* Re-raise the signal and die from it. */ | |
| 132 signal (sig, SIG_DFL); | |
| 133 raise (sig); | |
| 134 } | |
| 135 | |
| 136 int | |
| 137 main (int argc, char *argv[]) | |
| 138 { | |
| 139 int exitstatus; | |
| 140 | |
| 141 if (!(argc > 1 && strcmp (argv[1], "-child") == 0)) | |
| 142 { | |
| 143 /* This is the parent process. */ | |
| 144 signal (SIGINT, cleanup_then_die); | |
| 145 signal (SIGTERM, cleanup_then_die); | |
| 146 #ifdef SIGHUP | |
| 147 signal (SIGHUP, cleanup_then_die); | |
| 148 #endif | |
| 149 | |
| 150 exitstatus = parent_main (); | |
| 151 } | |
| 152 else | |
| 153 { | |
| 154 /* This is the child process. */ | |
| 155 | |
| 156 exitstatus = child_main (); | |
| 157 } | |
| 158 unlink (DATA_FILENAME); | |
| 159 return exitstatus; | |
| 160 } |