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annotate tests/test-posix_spawn_file_actions_adddup2.c @ 17418:88b6febaed97

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tests: port large-fd POSIX spawn tests to OS X Problem reported by Daiki Ueno in <http://lists.gnu.org/archive/html/bug-gnulib/2013-06/msg00031.html>. * tests/test-posix_spawn_file_actions_addclose.c: * tests/test-posix_spawn_file_actions_adddup2.c: * tests/test-posix_spawn_file_actions_addopen.c: Include <limits.h>, for OPEN_MAX, if available. (big_fd): New static function. (main): Use it.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 11 Jun 2013 00:10:21 -0700
parents 160b88fd4691
children 344018b6e5d7
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1 /* Test posix_spawn_file_actions_adddup2() function.
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2 Copyright (C) 2011-2013 Free Software Foundation, Inc.
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3
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4 This program is free software: you can redistribute it and/or modify
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5 it under the terms of the GNU General Public License as published by
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6 the Free Software Foundation; either version 3 of the License, or
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7 (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful,
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10 but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 GNU General Public License for more details.
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13
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14 You should have received a copy of the GNU General Public License
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15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16
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17 #include <config.h>
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18
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19 #include <spawn.h>
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20
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21 #include "signature.h"
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22 SIGNATURE_CHECK (posix_spawn_file_actions_adddup2, int,
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23 (posix_spawn_file_actions_t *, int, int));
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24
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25 #include <errno.h>
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26 #include <limits.h>
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27 #include <unistd.h>
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28
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29 #include "macros.h"
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30
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31 /* Return a file descriptor that is too big to use.
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32 Prefer the smallest such fd, except use OPEN_MAX if it is defined
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33 and is greater than getdtablesize (), as that's how OS X works. */
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34 static int
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35 big_fd (void)
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36 {
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37 int fd = getdtablesize ();
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38 #ifdef OPEN_MAX
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39 if (fd < OPEN_MAX)
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40 fd = OPEN_MAX;
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41 #endif
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42 return fd;
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43 }
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44
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45 int
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46 main (void)
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47 {
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48 int bad_fd = big_fd ();
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49 posix_spawn_file_actions_t actions;
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50
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51 ASSERT (posix_spawn_file_actions_init (&actions) == 0);
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52
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53 /* Test behaviour for invalid file descriptors. */
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54 {
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55 errno = 0;
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56 ASSERT (posix_spawn_file_actions_adddup2 (&actions, -1, 2) == EBADF);
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57 }
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58 {
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59 errno = 0;
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60 ASSERT (posix_spawn_file_actions_adddup2 (&actions, bad_fd, 2) == EBADF);
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61 }
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62 {
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63 errno = 0;
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64 ASSERT (posix_spawn_file_actions_adddup2 (&actions, 2, -1) == EBADF);
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65 }
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66 {
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67 errno = 0;
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68 ASSERT (posix_spawn_file_actions_adddup2 (&actions, 2, bad_fd) == EBADF);
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69 }
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70
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71 return 0;
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72 }