1 /*
   2  * Copyright (c) 2017, 2020, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 
  27 #include "jni.h"
  28 
  29 JNIEXPORT jclass JNICALL
  30 Java_java_lang_BootNativeLibrary_findClass
  31 (JNIEnv *env, jclass cls, jstring name) {
  32     jclass ncdfe;
  33     jthrowable t;
  34 
  35     const char* classname = (*env)->GetStringUTFChars(env, name, JNI_FALSE);
  36     jclass c = (*env)->FindClass(env, classname);
  37     (*env)->ReleaseStringUTFChars(env, name, classname);
  38 
  39     if (c == NULL) {
  40         // clear NCDFE
  41         t = (*env)->ExceptionOccurred(env);
  42         ncdfe = (*env)->FindClass(env, "java/lang/NoClassDefFoundError");
  43         if (t != NULL && (*env)->IsInstanceOf(env, t, ncdfe)) {
  44             (*env)->ExceptionClear(env);
  45         }
  46     }
  47     return c;
  48 }