io/fchmodat.c

   1 /* Change the protections of file relative to open directory.  Stub version.
   2    Copyright (C) 2006-2020 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <fcntl.h>
  21 #include <stddef.h>
  22 #include <unistd.h>
  23 #include <sys/types.h>
  24 #include <sys/stat.h>
  25
  26 int
  27 fchmodat (int fd, const char *file, mode_t mode, int flag)
  28 {
  29   if (file == NULL || (flag & ~AT_SYMLINK_NOFOLLOW) != 0)
  30     {
  31       __set_errno (EINVAL);
  32       return -1;
  33     }
  34
  35   if (fd < 0 && fd != AT_FDCWD)
  36     {
  37       __set_errno (EBADF);
  38       return -1;
  39     }
  40
  41   __set_errno (ENOSYS);
  42   return -1;
  43 }
  44 stub_warning (fchmodat)
  45 libc_hidden_def (fchmodat)