1 /* Copyright (C) 2000, 2009-2012 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 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 #include <config.h> 18 19 /* Specification. */ 20 #include <spawn.h> 21 22 #include <errno.h> 23 #include <unistd.h> 24 25 #if !_LIBC 26 # define __sysconf(open_max) getdtablesize () 27 #endif 28 29 #if !HAVE_WORKING_POSIX_SPAWN 30 # include "spawn_int.h" 31 #endif 32 33 /* Add an action to FILE-ACTIONS which tells the implementation to call 34 'open' for the given file during the 'spawn' call. */ 35 int 36 posix_spawn_file_actions_addopen (posix_spawn_file_actions_t *file_actions, 37 int fd, const char *path, int oflag, 38 mode_t mode) 39 #undef posix_spawn_file_actions_addopen 40 { 41 int maxfd = __sysconf (_SC_OPEN_MAX); 42 43 /* Test for the validity of the file descriptor. */ 44 if (fd < 0 || fd >= maxfd) 45 return EBADF; 46 47 #if HAVE_WORKING_POSIX_SPAWN 48 return posix_spawn_file_actions_addopen (file_actions, fd, path, oflag, mode); 49 #else 50 /* Allocate more memory if needed. */ 51 if (file_actions->_used == file_actions->_allocated 52 && __posix_spawn_file_actions_realloc (file_actions) != 0) 53 /* This can only mean we ran out of memory. */ 54 return ENOMEM; 55 56 { 57 struct __spawn_action *rec; 58 59 /* Add the new value. */ 60 rec = &file_actions->_actions[file_actions->_used]; 61 rec->tag = spawn_do_open; 62 rec->action.open_action.fd = fd; 63 rec->action.open_action.path = path; 64 rec->action.open_action.oflag = oflag; 65 rec->action.open_action.mode = mode; 66 67 /* Account for the new entry. */ 68 ++file_actions->_used; 69 70 return 0; 71 } 72 #endif 73 } 74
