JDK14/Java14源码在线阅读

/*
 * Copyright (c) 2004, 2012, 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 <sys/types.h>
#include <sys/stat.h>

#include "jni.h"
#include "jni_util.h"
#include "jdk_internal_agent_FileSystemImpl.h"

#ifdef _ALLBSD_SOURCE
#define stat64 stat
#endif

/*
 * JNI_OnLoad
 */
JNIEXPORT jint JNICALL DEF_JNI_OnLoad(JavaVM *vm, void *reserved)
{
    JNIEnv* env;

    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
        return JNI_EVERSION; /* JNI version not supported */
    }

    return JNI_VERSION_10;
}

/*
 * Class:     jdk_internal_agent_FileSystemImpl
 * Method:    isAccessUserOnly0
 * Signature: (Ljava/lang/String;)Z
 */
JNIEXPORT jboolean JNICALL Java_jdk_internal_agent_FileSystemImpl_isAccessUserOnly0
  (JNIEnv *env, jclass ignored, jstring str)
{
    jboolean res = JNI_FALSE;
    jboolean isCopy;
    const char *path = JNU_GetStringPlatformChars(env, str, &isCopy);
    if (path != NULL) {
        struct stat64 sb;
        if (stat64(path, &sb) == 0) {

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