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
      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
      51  posix_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  }