mes/lib/stub/access.c

46 lines
1.3 KiB
C

/* -*-comment-start: "//";comment-end:""-*-
* GNU Mes --- Maxwell Equations of Software
* Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of GNU Mes.
*
* GNU Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* GNU Mes 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#include <mes/lib.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
int
access (char const *file_name, int how)
{
static int stub = 0;
if (__mes_debug () && !stub)
eputs ("access stub\n");
stub = 1;
errno = 0;
if (how == R_OK || how == F_OK)
{
int filedes = _open3 (file_name, O_RDONLY, 0);
if (filedes >= 2)
return 0;
}
else if (how == W_OK)
return 0;
else if (how == X_OK)
return 0;
return -1;
}