1 /* Copyright (C) 2000, 2009-2021 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 <https://www.gnu.org/licenses/>. */ 16 17 #include <config.h> 18 19 /* Specification. */ 20 #include <spawn.h> 21 22 #include <errno.h> 23 #include <stdlib.h> 24 #include <string.h> 25 26 #include "spawn_int.h" 27 28 29 /* Function used to increase the size of the allocated array. This 30 function is called from the 'add'-functions. */ 31 int __posix_spawn_file_actions_realloc(posix_spawn_file_actions_t * file_actions)32__posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *file_actions) 33 { 34 int newalloc = file_actions->_allocated + 8; 35 void *newmem = realloc (file_actions->_actions, 36 newalloc * sizeof (struct __spawn_action)); 37 38 if (newmem == NULL) 39 /* Not enough memory. */ 40 return ENOMEM; 41 42 file_actions->_actions = (struct __spawn_action *) newmem; 43 file_actions->_allocated = newalloc; 44 45 return 0; 46 } 47 48 49 /* Initialize data structure for file attribute for 'spawn' call. */ 50 int posix_spawn_file_actions_init(posix_spawn_file_actions_t * file_actions)51posix_spawn_file_actions_init (posix_spawn_file_actions_t *file_actions) 52 { 53 /* Simply clear all the elements. */ 54 memset (file_actions, '\0', sizeof (*file_actions)); 55 return 0; 56 } 57