src/java.base/windows/classes/sun/nio/fs/WindowsNativeDispatcher.java

*** 483,507 ****
--- 483,536 ----
              return space;
          } finally {
              buffer.release();
          }
      }
+ 
+     /**
+      * GetDiskFreeSpace(
+      *   LPCTSTR lpRootPathName,
+      *   LPDWORD lpSectorsPerCluster,
+      *   LPDWORD lpBytesPerSector,
+      *   LPDWORD lpNumberOfFreeClusters,
+      *   LPDWORD lpTotalNumberOfClusters
+      * )
+      */
+     static DiskFreeSpace GetDiskFreeSpace(String path)
+         throws WindowsException
+     {
+         NativeBuffer buffer = asNativeBuffer(path);
+         try {
+             DiskFreeSpace space = new DiskFreeSpace();
+             GetDiskFreeSpace0(buffer.address(), space);
+             return space;
+         } finally {
+             buffer.release();
+         }
+     }
+ 
      static class DiskFreeSpace {
          private long freeBytesAvailable;
          private long totalNumberOfBytes;
          private long totalNumberOfFreeBytes;
+         private long bytesPerSector;
          private DiskFreeSpace() { }
  
          public long freeBytesAvailable()      { return freeBytesAvailable; }
          public long totalNumberOfBytes()      { return totalNumberOfBytes; }
          public long totalNumberOfFreeBytes()  { return totalNumberOfFreeBytes; }
+         public long bytesPerSector()          { return bytesPerSector; }
      }
      private static native void GetDiskFreeSpaceEx0(long lpDirectoryName,
                                                     DiskFreeSpace obj)
          throws WindowsException;
  
  
+     private static native void GetDiskFreeSpace0(long lpRootPathName,
+                                                  DiskFreeSpace obj)
+         throws WindowsException;
+ 
      /**
       * GetVolumePathName(
       *   LPCTSTR lpszFileName,
       *   LPTSTR lpszVolumePathName,
       *   DWORD cchBufferLength