sysdeps/unix/sysv/linux/fstatvfs.c

   1 /* Copyright (C) 1998-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   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 <stddef.h>
  20 #include <sys/stat.h>
  21 #include <sys/statfs.h>
  22 #include <sys/statvfs.h>
  23
  24 extern void __internal_statvfs (const char *name, struct statvfs *buf,
  25                                 struct statfs *fsbuf, int fd);
  26
  27
  28 int
  29 __fstatvfs (int fd, struct statvfs *buf)
  30 {
  31   struct statfs fsbuf;
  32
  33   /* Get as much information as possible from the system.  */
  34   if (__fstatfs (fd, &fsbuf) < 0)
  35     return -1;
  36
  37   /* Convert the result.  */
  38   __internal_statvfs (NULL, buf, &fsbuf, fd);
  39
  40   /* We signal success if the statfs call succeeded.  */
  41   return 0;
  42 }
  43 weak_alias (__fstatvfs, fstatvfs)
  44 libc_hidden_weak (fstatvfs)