/*
* Copyright ( c ) 2005 , 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
* particular file as subject to the " Classpath " exception as provided
* by Oracle in the LICENSE file that accompanied this code .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#include "jni.h"
#include "jni_util.h"
#include "jvm.h"
#include "nio.h"
#include "nio_util.h"
#include "sun_nio_ch_FileKey.h"
static jfieldID key_volumeSN; /* id for FileKey.dwVolumeSerialNumber */
static jfieldID key_indexHigh; /* id for FileKey.nFileIndexHigh */
static jfieldID key_indexLow; /* id for FileKey.nFileIndexLow */
JNIEXPORT void JNICALL
Java_sun_nio_ch_FileKey_initIDs(JNIEnv *env, jclass clazz)
{
CHECK_NULL(key_volumeSN = (*env)->GetFieldID(env, clazz, "dwVolumeSerialNumber" , "J" ));
CHECK_NULL(key_indexHigh = (*env)->GetFieldID(env, clazz, "nFileIndexHigh" , "J" ));
CHECK_NULL(key_indexLow = (*env)->GetFieldID(env, clazz, "nFileIndexLow" , "J" ));
}
JNIEXPORT void JNICALL
Java_sun_nio_ch_FileKey_init(JNIEnv *env, jobject this , jobject fdo)
{
HANDLE fileHandle = (HANDLE)(handleval(env, fdo));
BOOL result;
BY_HANDLE_FILE_INFORMATION fileInfo;
result = GetFileInformationByHandle(fileHandle, &fileInfo);
if (result) {
(*env)->SetLongField(env, this , key_volumeSN, fileInfo.dwVolumeSerialNumber);
(*env)->SetLongField(env, this , key_indexHigh, fileInfo.nFileIndexHigh);
(*env)->SetLongField(env, this , key_indexLow, fileInfo.nFileIndexLow);
} else {
JNU_ThrowIOExceptionWithLastError(env, "GetFileInformationByHandle failed" );
}
}
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(vorverarbeitet am 2026-06-10)
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