src/java.base/windows/native/libnio/fs/WindowsNativeDispatcher.c

*** 1,7 ****
  /*
!  * Copyright (c) 2008, 2016, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  /*
!  * Copyright (c) 2008, 2017, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.  Oracle designates this
*** 57,66 ****
--- 57,68 ----
  
  static jfieldID diskSpace_bytesAvailable;
  static jfieldID diskSpace_totalBytes;
  static jfieldID diskSpace_totalFree;
  
+ static jfieldID diskSpace_bytesPerSector;
+ 
  static jfieldID account_domain;
  static jfieldID account_name;
  static jfieldID account_use;
  
  static jfieldID aclInfo_aceCount;
*** 119,128 ****
--- 121,132 ----
      CHECK_NULL(diskSpace_bytesAvailable);
      diskSpace_totalBytes = (*env)->GetFieldID(env, clazz, "totalNumberOfBytes", "J");
      CHECK_NULL(diskSpace_totalBytes);
      diskSpace_totalFree = (*env)->GetFieldID(env, clazz, "totalNumberOfFreeBytes", "J");
      CHECK_NULL(diskSpace_totalFree);
+     diskSpace_bytesPerSector = (*env)->GetFieldID(env, clazz, "bytesPerSector", "J");
+     CHECK_NULL(diskSpace_bytesPerSector);
  
      clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$Account");
      CHECK_NULL(clazz);
      account_domain = (*env)->GetFieldID(env, clazz, "domain", "Ljava/lang/String;");
      CHECK_NULL(account_domain);
*** 580,589 ****
--- 584,617 ----
          long_to_jlong(totalNumberOfBytes.QuadPart));
      (*env)->SetLongField(env, obj, diskSpace_totalFree,
          long_to_jlong(totalNumberOfFreeBytes.QuadPart));
  }
  
+ JNIEXPORT void JNICALL
+ Java_sun_nio_fs_WindowsNativeDispatcher_GetDiskFreeSpace0(JNIEnv* env, jclass this,
+     jlong address, jobject obj)
+ {
+     DWORD sectorsPerCluster;
+     DWORD bytesPerSector;
+     DWORD numberOfFreeClusters;
+     DWORD totalNumberOfClusters;
+     LPCWSTR lpRootPathName = jlong_to_ptr(address);
+ 
+ 
+     BOOL res = GetDiskFreeSpaceW(lpRootPathName,
+                                  &sectorsPerCluster,
+                                  &bytesPerSector,
+                                  &numberOfFreeClusters,
+                                  &totalNumberOfClusters);
+     if (res == 0) {
+         throwWindowsException(env, GetLastError());
+         return;
+     }
+ 
+     (*env)->SetLongField(env, obj, diskSpace_bytesPerSector,
+         long_to_jlong(bytesPerSector));
+ }
  
  JNIEXPORT jstring JNICALL
  Java_sun_nio_fs_WindowsNativeDispatcher_GetVolumePathName0(JNIEnv* env, jclass this,
      jlong address)
  {