63 lines
1.9 KiB
C
63 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2021, 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.
|
|
*
|
|
* 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 <stdio.h>
|
|
#include <string.h>
|
|
#include <jvmti.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
static jvmtiEnv *jvmti = NULL;
|
|
|
|
JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {
|
|
int err = (*jvm)->GetEnv(jvm, (void**) &jvmti, JVMTI_VERSION_9);
|
|
if (err != JNI_OK) {
|
|
return JNI_ERR;
|
|
}
|
|
return JNI_OK;
|
|
}
|
|
|
|
JNIEXPORT jstring JNICALL
|
|
Java_GetBootClassPathAppendProp_getSystemProperty(JNIEnv *env, jclass cls) {
|
|
jvmtiError err;
|
|
char* prop_value;
|
|
|
|
err = (*jvmti)->GetSystemProperty(jvmti, "jdk.boot.class.path.append", &prop_value);
|
|
if (err == JVMTI_ERROR_NOT_AVAILABLE) {
|
|
return NULL;
|
|
}
|
|
if (err != JVMTI_ERROR_NONE) {
|
|
char err_msg[50];
|
|
snprintf(err_msg, 50, "Wrong JVM TI error code: %d", err);
|
|
return (*env)->NewStringUTF(env, err_msg);
|
|
}
|
|
|
|
return (*env)->NewStringUTF(env, prop_value);
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|