annotate lib/spawn_faction_addopen.c @ 17363:5a51fb7777a9

sys_select, sys_time: port 2013-01-30 Solaris 2.6 fix to Cygwin Problem reported by Marco Atzeri in <http://lists.gnu.org/archive/html/bug-gnulib/2013-03/msg00000.html>. * lib/sys_select.in.h [HAVE_SYS_SELECT_H && _CYGWIN_SYS_TIME_H]: Simply delegate to the system <sys/select.h> in this case too. Also, pay attention to _GL_SYS_SELECT_H_REDIRECT_FROM_SYS_TIME_H only if OSF/1, since otherwise Cygwin breaks, and it doesn't seem to be needed on Solaris either. * lib/sys_time.in.h [_CYGWIN_SYS_TIME_H]: Simply delgate to the system <sys/time.h> in this case.
author Paul Eggert <eggert@cs.ucla.edu>
date Tue, 19 Mar 2013 09:08:47 -0700
parents e542fd46ad6f
children 344018b6e5d7
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Eric Blake <eblake@redhat.com>
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1 /* Copyright (C) 2000, 2009-2013 Free Software Foundation, Inc.
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2 This file is part of the GNU C Library.
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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 /* Specification. */
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20 #include <spawn.h>
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21
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22 #include <errno.h>
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23 #include <unistd.h>
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24
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25 #if !_LIBC
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26 # define __sysconf(open_max) getdtablesize ()
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27 #endif
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28
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29 #if !HAVE_WORKING_POSIX_SPAWN
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30 # include "spawn_int.h"
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31 #endif
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32
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33 /* Add an action to FILE-ACTIONS which tells the implementation to call
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34 'open' for the given file during the 'spawn' call. */
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35 int
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36 posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *file_actions,
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37 int fd, const char *path, int oflag,
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38 mode_t mode)
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39 #undef posix_spawn_file_actions_addopen
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40 {
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41 int maxfd = __sysconf (_SC_OPEN_MAX);
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42
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43 /* Test for the validity of the file descriptor. */
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44 if (fd < 0 || fd >= maxfd)
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45 return EBADF;
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46
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47 #if HAVE_WORKING_POSIX_SPAWN
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48 return posix_spawn_file_actions_addopen (file_actions, fd, path, oflag, mode);
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49 #else
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50 /* Allocate more memory if needed. */
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51 if (file_actions->_used == file_actions->_allocated
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52 && __posix_spawn_file_actions_realloc (file_actions) != 0)
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53 /* This can only mean we ran out of memory. */
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54 return ENOMEM;
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55
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56 {
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57 struct __spawn_action *rec;
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58
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59 /* Add the new value. */
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60 rec = &file_actions->_actions[file_actions->_used];
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61 rec->tag = spawn_do_open;
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62 rec->action.open_action.fd = fd;
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63 rec->action.open_action.path = path;
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64 rec->action.open_action.oflag = oflag;
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65 rec->action.open_action.mode = mode;
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66
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67 /* Account for the new entry. */
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68 ++file_actions->_used;
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69
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70 return 0;
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71 }
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72 #endif
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73 }