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