sysdeps/unix/sysv/linux/fxstat64.c

   1 /* fxstat64 using Linux fstat64/statx system call.
   2    Copyright (C) 1997-2019 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 <fcntl.h>
  22 #include <sys/stat.h>
  23 #include <kernel_stat.h>
  24
  25 #include <sysdep.h>
  26 #include <sys/syscall.h>
  27
  28 #include <statx_cp.h>
  29
  30 /* Get information about the file FD in BUF.  */
  31
  32 int
  33 ___fxstat64 (int vers, int fd, struct stat64 *buf)
  34 {
  35   int result;
  36 #ifdef __NR_fstat64
  37   result = INLINE_SYSCALL (fstat64, 2, fd, buf);
  38 #else
  39   struct statx tmp;
  40   result = INLINE_SYSCALL (statx, 5, fd, "", AT_EMPTY_PATH, STATX_BASIC_STATS,
  41                            &tmp);
  42   if (result == 0)
  43     __cp_stat64_statx (buf, &tmp);
  44 #endif
  45   return result;
  46 }
  47
  48 #include <shlib-compat.h>
  49
  50 #if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
  51 versioned_symbol (libc, ___fxstat64, __fxstat64, GLIBC_2_2);
  52 strong_alias (___fxstat64, __old__fxstat64)
  53 compat_symbol (libc, __old__fxstat64, __fxstat64, GLIBC_2_1);
  54 hidden_ver (___fxstat64, __fxstat64)
  55 #else
  56 strong_alias (___fxstat64, __fxstat64)
  57 hidden_def (__fxstat64)
  58 #endif