io/fstat.c

   1 /* Copyright (C) 1996, 1997, 1998, 2001 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, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <sys/stat.h>
  20
  21 /* This definition is only used if inlining fails for this function; see
  22    the last page of <sys/stat.h>.  The real work is done by the `x'
  23    function which is passed a version number argument.  We arrange in the
  24    makefile that when not inlined this function is always statically
  25    linked; that way a dynamically-linked executable always encodes the
  26    version number corresponding to the data structures it uses, so the `x'
  27    functions in the shared library can adapt without needing to recompile
  28    all callers.  */
  29
  30 #undef fstat
  31 #undef __fstat
  32 int
  33 __fstat (int fd, struct stat *buf)
  34 {
  35   return __fxstat (_STAT_VER, fd, buf);
  36 }
  37
  38 weak_alias (__fstat, fstat)
  39
  40 /* Hide the symbol so that no definition but the one locally in the
  41    executable or DSO is used.  */
  42 #ifdef HAVE_DOT_HIDDEN
  43 asm (".hidden\tfstat");
  44 asm (".hidden\t__fstat");
  45 #endif