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 void* getProcessHandle() { 34 static void *procHandle = NULL; 35 if (procHandle != NULL) { 36 return procHandle; 37 } 38 #ifdef __APPLE__ 39 procHandle = (void*)dlopen(NULL, RTLD_FIRST); 40 #else 41 procHandle = (void*)dlopen(NULL, RTLD_LAZY); 42 #endif 43 return procHandle; 44 } 45 46 void buildJniFunctionName(const char *sym, const char *cname, 47 char *jniEntryName) { 48 strcpy(jniEntryName, sym); 49 if (cname != NULL) { 50 strcat(jniEntryName, "_"); 51 strcat(jniEntryName, cname); 52 } 53 } 54 55 size_t 56 getLastErrorString(char *buf, size_t len) 57 { 58 char *err; 59 size_t n; 60 if (errno == 0 || len < 1) return 0; 61 62 err = strerror(errno); 63 n = strlen(err); 64 if (n >= len) 65 n = len - 1; 66 67 strncpy(buf, err, n); 68 buf[n] = '\0'; 69 return n; 70 }