sysdeps/unix/sysv/linux/fxstat64.c

   1 /* fxstat64 using Linux fstat64 system call.
   2    Copyright (C) 1997-2015 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <stddef.h>
  21 #include <sys/stat.h>
  22 #include <kernel_stat.h>
  23
  24 #include <sysdep.h>
  25 #include <sys/syscall.h>
  26
  27 #include <kernel-features.h>
  28
  29 /* Get information about the file FD in BUF.  */
  30
  31 int
  32 ___fxstat64 (int vers, int fd, struct stat64 *buf)
  33 {
  34   int result;
  35   result = INLINE_SYSCALL (fstat64, 2, fd, buf);
  36 #if defined _HAVE_STAT64___ST_INO && __ASSUME_ST_INO_64_BIT == 0
  37   if (__builtin_expect (!result, 1) && buf->__st_ino != (__ino_t) buf->st_ino)
  38     buf->st_ino = buf->__st_ino;
  39 #endif
  40   return result;
  41 }
  42
  43 #include <shlib-compat.h>
  44
  45 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
  46 versioned_symbol (libc, ___fxstat64, __fxstat64, GLIBC_2_2);
  47 strong_alias (___fxstat64, __old__fxstat64)
  48 compat_symbol (libc, __old__fxstat64, __fxstat64, GLIBC_2_1);
  49 hidden_ver (___fxstat64, __fxstat64)
  50 #else
  51 strong_alias (___fxstat64, __fxstat64)
  52 hidden_def (__fxstat64)
  53 #endif