io/access.c

   1 /* Copyright (C) 1991-2022 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 <stddef.h>
  20 #include <unistd.h>
  21
  22 /* Test for access to FILE without setting errno.   */
  23 int
  24 __access_noerrno (const char *file, int type)
  25 {
  26   return -1;
  27 }
  28
  29 /* Test for access to FILE.  */
  30 int
  31 __access (const char *file, int type)
  32 {
  33   if (file == NULL || (type & ~(R_OK|W_OK|X_OK|F_OK)) != 0)
  34     {
  35       __set_errno (EINVAL);
  36       return -1;
  37     }
  38
  39   __set_errno (ENOSYS);
  40   return -1;
  41 }
  42 libc_hidden_def (__access)
  43 stub_warning (access)
  44
  45 weak_alias (__access, access)