src/java.base/windows/native/libnio/ch/FileKey.c

/*
 * Copyright (c) 2005, 2024, 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
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#include "jni.h"
#include "jni_util.h"
#include "jvm.h"
#include "nio.h"
#include "nio_util.h"
#include "sun_nio_ch_FileKey.h"

JNIEXPORT void JNICALL
Java_sun_nio_ch_FileKey_init(JNIEnv *env, jclass clazz, jobject fdo, jintArray finfo)
{
    HANDLE fileHandle = (HANDLE)handleval(env, fdo);
    BOOL result;
    BY_HANDLE_FILE_INFORMATION fileInfo;
    jint info[3];

    result = GetFileInformationByHandle(fileHandle, &fileInfo);
    if (result) {
        info[0] = (jint)fileInfo.dwVolumeSerialNumber;
        info[1] = (jint)fileInfo.nFileIndexHigh;
        info[2] = (jint)fileInfo.nFileIndexLow;
        (*env)->SetIntArrayRegion(env, finfo, 0, 3, info);
    } else {
        JNU_ThrowIOExceptionWithLastError(env, "GetFileInformationByHandle failed");
    }
}