source/smbd/statvfs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    VFS API's statvfs abstraction
   4    Copyright (C) Alexander Bokovoy                      2005
   5    Copyright (C) Steve French                           2005
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 #if defined(LINUX) && defined(HAVE_FSID_INT)
  25 static int linux_statvfs(const char *path, vfs_statvfs_struct *statbuf)
  26 {
  27         struct statvfs statvfs_buf;
  28         int result;
  29
  30         result = statvfs(path, &statvfs_buf);
  31
  32         if (!result) {
  33                 statbuf->OptimalTransferSize = statvfs_buf.f_frsize;
  34                 statbuf->BlockSize = statvfs_buf.f_bsize;
  35                 statbuf->TotalBlocks = statvfs_buf.f_blocks;
  36                 statbuf->BlocksAvail = statvfs_buf.f_bfree;
  37                 statbuf->UserBlocksAvail = statvfs_buf.f_bavail;
  38                 statbuf->TotalFileNodes = statvfs_buf.f_files;
  39                 statbuf->FreeFileNodes = statvfs_buf.f_ffree;
  40                 statbuf->FsIdentifier = statvfs_buf.f_fsid;
  41         }
  42         return result;
  43 }
  44 #endif
  45
  46 /*
  47  sys_statvfs() is an abstraction layer over system-dependent statvfs()/statfs()
  48  for particular POSIX systems. Due to controversy of what is considered more important
  49  between LSB and FreeBSD/POSIX.1 (IEEE Std 1003.1-2001) we need to abstract the interface
  50  so that particular OS would use its preffered interface.
  51 */
  52 int sys_statvfs(const char *path, vfs_statvfs_struct *statbuf)
  53 {
  54 #if defined(LINUX) && defined(HAVE_FSID_INT)
  55         return linux_statvfs(path, statbuf);
  56 #else
  57         /* BB change this to return invalid level */
  58 #ifdef EOPNOTSUPP
  59         return EOPNOTSUPP;
  60 #else
  61         return -1;
  62 #endif /* EOPNOTSUPP */
  63 #endif /* LINUX */
  64
  65 }