1 /* 2 * Copyright (c) 2008, 2014, 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 <errno.h> 27 #include <string.h> 28 29 #include "jni.h" 30 #include "jni_util.h" 31 #include "dlfcn.h" 32 33 #if defined(LINUX) && (defined(_GNU_SOURCE) || \ 34 (defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE < 200112L \ 35 && defined(_XOPEN_SOURCE) && _XOPEN_SOURCE < 600)) 36 extern int __xpg_strerror_r(int, char *, size_t); 37 #define strerror_r(a, b, c) __xpg_strerror_r((a), (b), (c)) 38 #endif 39 40 void* getProcessHandle() { 41 static void *procHandle = NULL; 42 if (procHandle != NULL) { 43 return procHandle; 44 } 45 #ifdef __APPLE__ 46 procHandle = (void*)dlopen(NULL, RTLD_FIRST); 47 #else 48 procHandle = (void*)dlopen(NULL, RTLD_LAZY); 49 #endif 50 return procHandle; 51 } 52 53 void buildJniFunctionName(const char *sym, const char *cname, 54 char *jniEntryName) { 55 strcpy(jniEntryName, sym); 56 if (cname != NULL) { 57 strcat(jniEntryName, "_"); 58 strcat(jniEntryName, cname); 59 } 60 } 61 62 size_t 63 getLastErrorString(char *buf, size_t len) 64 { 65 if (errno == 0 || len < 1) return 0; 66 getErrorString(errno, buf, len); 67 return strlen(buf); 68 } 69 70 int 71 getErrorString(int err, char *buf, size_t len) 72 { 73 if (err == 0 || len < 1) return 0; 74 return strerror_r(err, buf, len); 75 }