io/fxstat.c

   1 /* Copyright (C) 1991-2013 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    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <errno.h>
  19 #include <stddef.h>
  20 #include <sys/stat.h>
  21
  22 /* Get information about the file descriptor FD in BUF.  */
  23 int
  24 __fxstat (int vers, int fd, struct stat *buf)
  25 {
  26   if (vers != _STAT_VER)
  27     {
  28       __set_errno (EINVAL);
  29       return -1;
  30     }
  31
  32   if (fd < 0)
  33     {
  34       __set_errno (EBADF);
  35       return -1;
  36     }
  37   else if (buf == NULL)
  38     {
  39       __set_errno (EINVAL);
  40       return -1;
  41     }
  42
  43   __set_errno (ENOSYS);
  44   return -1;
  45 }
  46 stub_warning (fstat)
  47 hidden_def (__fxstat)
  48 weak_alias (__fxstat, _fxstat)