diskfull.cc

   1 /*
   2  * Copyright (c) 2000, Red Hat, Inc.
   3  *
   4  *     This program is free software; you can redistribute it and/or modify
   5  *     it under the terms of the GNU General Public License as published by
   6  *     the Free Software Foundation; either version 2 of the License, or
   7  *     (at your option) any later version.
   8  *
   9  *     A copy of the GNU General Public License can be found at
  10  *     http://www.gnu.org/
  11  *
  12  * Written by DJ Delorie <dj@cygnus.com>
  13  *
  14  */
  15
  16 /* The purpose of this file is to hide the mess needed just to figure
  17    out how full a given disk is.  There is an old API that can't
  18    handle disks bigger than 2G, and a new API that isn't always
  19    available. */
  20
  21 #include "win32.h"
  22 #include "filemanip.h"
  23 #include "diskfull.h"
  24
  25 int
  26 diskfull (const std::string& path)
  27 {
  28   ULARGE_INTEGER avail, total, free;
  29   size_t len = path.size () + 7;
  30   WCHAR wpath[len];
  31
  32   mklongpath (wpath, path.c_str (), len);
  33   if (GetDiskFreeSpaceExW (wpath, &avail, &total, &free))
  34     {
  35       int perc = avail.QuadPart * 100 / total.QuadPart;
  36       return 100 - perc;
  37     }
  38   return 0;
  39 }