1  /* Copyright (C) 2000-2023 Free Software Foundation, Inc.
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library 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 GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  #include <errno.h>
      19  #include <spawn.h>
      20  #include <stdlib.h>
      21  #include <string.h>
      22  
      23  #include "spawn_int.h"
      24  
      25  
      26  /* Function used to increase the size of the allocated array.  This
      27     function is called from the `add'-functions.  */
      28  int
      29  __posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *file_actions)
      30  {
      31    int newalloc = file_actions->__allocated + 8;
      32    void *newmem = realloc (file_actions->__actions,
      33  			  newalloc * sizeof (struct __spawn_action));
      34  
      35    if (newmem == NULL)
      36      /* Not enough memory.  */
      37      return ENOMEM;
      38  
      39    file_actions->__actions = (struct __spawn_action *) newmem;
      40    file_actions->__allocated = newalloc;
      41  
      42    return 0;
      43  }
      44  
      45  
      46  /* Initialize data structure for file attribute for `spawn' call.  */
      47  int
      48  __posix_spawn_file_actions_init (posix_spawn_file_actions_t *file_actions)
      49  {
      50    /* Simply clear all the elements.  */
      51    memset (file_actions, '\0', sizeof (*file_actions));
      52    return 0;
      53  }
      54  weak_alias (__posix_spawn_file_actions_init, posix_spawn_file_actions_init)