sysdeps/unix/sysv/linux/statvfs.c

   1 /* Copyright (C) 1998 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #include <errno.h>
  21 #include <fcntl.h>
  22 #include <unistd.h>
  23 #include <sys/statvfs.h>
  24
  25
  26 int
  27 statvfs (const char *file, struct statvfs *buf)
  28 {
  29   int save_errno;
  30   int retval;
  31   int fd;
  32
  33   fd = __open (file, O_RDONLY);
  34   if (fd < 0)
  35     return -1;
  36
  37   /* Let fstatvfs do the real work.  */
  38   retval = fstatvfs (fd, buf);
  39
  40   /* Close the file while preserving the error number.  */
  41   save_errno = errno;
  42   __close (fd);
  43   __set_errno (save_errno);
  44
  45   return retval;
  46 }