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 Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    License, or (at your option) any later version.
   8
   9    In addition to the permissions in the GNU Library General Public
  10    License, the Free Software Foundation gives you unlimited
  11    permission to link the compiled version of this file with other
  12    programs, and to distribute those programs without any restriction
  13    coming from the use of this file.  (The Library General Public
  14    License restrictions do apply in other respects; for example, they
  15    cover modification of the file, and distribution when not linked
  16    into another program.)
  17
  18    The GNU C Library is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21    Library General Public License for more details.
  22
  23    You should have received a copy of the GNU Library General Public
  24    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  25    write to the Free Software Foundation, 59 Temple Place - Suite 330,
  26    Boston, MA 02111-1307, USA.  */
  27
  28 #include <sys/stat.h>
  29
  30 /* This definition is only used if inlining fails for this function; see
  31    the last page of <sys/stat.h>.  The real work is done by the `x'
  32    function which is passed a version number argument.  We arrange in the
  33    makefile that when not inlined this function is always statically
  34    linked; that way a dynamically-linked executable always encodes the
  35    version number corresponding to the data structures it uses, so the `x'
  36    functions in the shared library can adapt without needing to recompile
  37    all callers.  */
  38
  39 #undef fstat
  40 #undef __fstat
  41 int
  42 __fstat (int fd, struct stat *buf)
  43 {
  44   return __fxstat (_STAT_VER, fd, buf);
  45 }
  46
  47 weak_alias (__fstat, fstat)
  48
  49 /* Hide the symbol so that no definition but the one locally in the
  50    executable or DSO is used.  */
  51 #ifdef HAVE_DOT_HIDDEN
  52 asm (".hidden\tfstat");
  53 asm (".hidden\t__fstat");
  54 #endif