blob: e095296abeb03e2487e41f44b69fb2881f545c18 [file] [log] [blame]
/*
* 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)
{
key_volumeSN = (*env)->GetFieldID(env, clazz, "dwVolumeSerialNumber", "J");
key_indexHigh = (*env)->GetFieldID(env, clazz, "nFileIndexHigh", "J");
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");
}
}