1 /* 2 * Copyright (c) 2004, 2012, 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 <sys/types.h> 27 #include <sys/stat.h> 28 29 #include "jni.h" 30 #include "jni_util.h" 31 #include "jdk_internal_agent_FileSystemImpl.h" 32 33 #ifdef _ALLBSD_SOURCE 34 #define stat64 stat 35 #endif 36 37 /* 38 * JNI_OnLoad 39 */ 40 JNIEXPORT jint JNICALL DEF_JNI_OnLoad(JavaVM *vm, void *reserved) 41 { 42 JNIEnv* env; 43 44 if ((*vm)->GetEnv(vm, (void**) &env, JNI_VERSION_1_2) != JNI_OK) { 45 return JNI_EVERSION; /* JNI version not supported */ 46 } 47 48 return JNI_VERSION_9; 49 } 50 51 /* 52 * Class: jdk_internal_agent_FileSystemImpl 53 * Method: isAccessUserOnly0 54 * Signature: (Ljava/lang/String;)Z 55 */ 56 JNIEXPORT jboolean JNICALL Java_jdk_internal_agent_FileSystemImpl_isAccessUserOnly0 57 (JNIEnv *env, jclass ignored, jstring str) 58 { 59 jboolean res = JNI_FALSE; 60 jboolean isCopy; 61 const char *path = JNU_GetStringPlatformChars(env, str, &isCopy); 62 if (path != NULL) { 63 struct stat64 sb; 64 if (stat64(path, &sb) == 0) { 65 res = ((sb.st_mode & (S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)) == 0) ? JNI_TRUE : JNI_FALSE; 66 } else { 67 JNU_ThrowIOExceptionWithLastError(env, "stat64 failed"); 68 } 69 if (isCopy) { 70 JNU_ReleaseStringPlatformChars(env, str, path); 71 } 72 } 73 return res; 74 }