jdk

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/*
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 * Copyright (c) 2004, 2024, 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 <sys/types.h>
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#include <sys/stat.h>
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#include "jni.h"
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#include "jni_util.h"
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#include "jdk_internal_agent_FileSystemImpl.h"
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/*
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 * JNI_OnLoad
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 */
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JNIEXPORT jint JNICALL DEF_JNI_OnLoad(JavaVM *vm, void *reserved)
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{
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    JNIEnv* env;
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    if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) {
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        return JNI_EVERSION; /* JNI version not supported */
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    }
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    return JNI_VERSION_19;
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}
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/*
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 * Class:     jdk_internal_agent_FileSystemImpl
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 * Method:    isAccessUserOnly0
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 * Signature: (Ljava/lang/String;)Z
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 */
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JNIEXPORT jboolean JNICALL Java_jdk_internal_agent_FileSystemImpl_isAccessUserOnly0
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  (JNIEnv *env, jclass ignored, jstring str)
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{
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    jboolean res = JNI_FALSE;
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    jboolean isCopy;
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    const char *path = JNU_GetStringPlatformChars(env, str, &isCopy);
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    if (path != NULL) {
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        struct stat sb;
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        if (stat(path, &sb) == 0) {
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            res = ((sb.st_mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) == 0) ? JNI_TRUE : JNI_FALSE;
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        } else {
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            JNU_ThrowIOExceptionWithLastError(env, "stat failed");
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        }
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        if (isCopy) {
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            JNU_ReleaseStringPlatformChars(env, str, path);
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        }
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    }
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    return res;
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}
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