1 /* 2 * Copyright (c) 2005, 2015, 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 #include "jni.h" 27 #include "jni_util.h" 28 #include "jvm.h" 29 #include "jdk_util.h" 30 31 #include "sun_misc_Version.h" 32 33 static void setStaticIntField(JNIEnv* env, jclass cls, const char* name, jint value) 34 { 35 jfieldID fid; 36 fid = (*env)->GetStaticFieldID(env, cls, name, "I"); 37 if (fid != 0) { 38 (*env)->SetStaticIntField(env, cls, fid, value); 39 } 40 } 41 42 typedef void (JNICALL *GetJvmVersionInfo_fp)(JNIEnv*, jvm_version_info*, size_t); 43 44 JNIEXPORT jboolean JNICALL 45 Java_sun_misc_Version_getJvmVersionInfo(JNIEnv *env, jclass cls) 46 { 47 jvm_version_info info; 48 GetJvmVersionInfo_fp func_p; 49 50 if (!JDK_InitJvmHandle()) { 51 JNU_ThrowInternalError(env, "Handle for JVM not found for symbol lookup"); 52 return JNI_FALSE; 53 } 54 func_p = (GetJvmVersionInfo_fp) JDK_FindJvmEntry("JVM_GetVersionInfo"); 55 if (func_p == NULL) { 56 return JNI_FALSE; 57 } 58 59 (*func_p)(env, &info, sizeof(info)); 60 setStaticIntField(env, cls, "jvm_major_version", JVM_VERSION_MAJOR(info.jvm_version)); 61 JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); 62 setStaticIntField(env, cls, "jvm_minor_version", JVM_VERSION_MINOR(info.jvm_version)); 63 JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); 64 setStaticIntField(env, cls, "jvm_security_version", JVM_VERSION_SECURITY(info.jvm_version)); 65 JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); 66 setStaticIntField(env, cls, "jvm_build_number", JVM_VERSION_BUILD(info.jvm_version)); 67 JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); 68 setStaticIntField(env, cls, "jvm_patch_version", info.patch_version); 69 JNU_CHECK_EXCEPTION_RETURN(env, JNI_FALSE); 70 71 return JNI_TRUE; 72 } 73 74 JNIEXPORT void JNICALL 75 Java_sun_misc_Version_getJdkVersionInfo(JNIEnv *env, jclass cls) 76 { 77 jdk_version_info info; 78 79 JDK_GetVersionInfo0(&info, sizeof(info)); 80 setStaticIntField(env, cls, "jdk_major_version", JDK_VERSION_MAJOR(info.jdk_version)); 81 JNU_CHECK_EXCEPTION(env); 82 setStaticIntField(env, cls, "jdk_minor_version", JDK_VERSION_MINOR(info.jdk_version)); 83 JNU_CHECK_EXCEPTION(env); 84 setStaticIntField(env, cls, "jdk_security_version", JDK_VERSION_SECURITY(info.jdk_version)); 85 JNU_CHECK_EXCEPTION(env); 86 setStaticIntField(env, cls, "jdk_build_number", JDK_VERSION_BUILD(info.jdk_version)); 87 JNU_CHECK_EXCEPTION(env); 88 setStaticIntField(env, cls, "jdk_patch_version", info.patch_version); 89 JNU_CHECK_EXCEPTION(env); 90 }