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Add Gnulib modules for 'posix_spawn' file operations.

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This is again from Gnulib v0.1-5703-g356a414e8c.

* m4/gnulib-cache.m4: Add 'posix_spawn_file_actions_addclose',
'posix_spawn_file_actions_adddup2',
'posix_spawn_file_actions_addopen', and
'posix_spawn_file_actions_init'.
This commit is contained in:
Ludovic Courtès 2023-01-19 00:32:12 +01:00
parent d98888290b
commit 3bb08542d2
7 changed files with 366 additions and 0 deletions
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56
lib/spawn_faction_init.c Normal file
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/* Copyright (C) 2000, 2009-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include <spawn.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include "spawn_int.h"
/* Function used to increase the size of the allocated array. This
function is called from the 'add'-functions. */
int
__posix_spawn_file_actions_realloc (posix_spawn_file_actions_t *file_actions)
{
int newalloc = file_actions->_allocated + 8;
void *newmem = realloc (file_actions->_actions,
newalloc * sizeof (struct __spawn_action));
if (newmem == NULL)
/* Not enough memory. */
return ENOMEM;
file_actions->_actions = (struct __spawn_action *) newmem;
file_actions->_allocated = newalloc;
return 0;
}
/* Initialize data structure for file attribute for 'spawn' call. */
int
posix_spawn_file_actions_init (posix_spawn_file_actions_t *file_actions)
{
/* Simply clear all the elements. */
memset (file_actions, '\0', sizeof (*file_actions));
return 0;
}