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 "jdk_strerror.h" 30 #include "jni.h" 31 #include "jni_util.h" 32 #include "dlfcn.h" 33 34 void* getProcessHandle() { 35 static void *procHandle = NULL; 36 if (procHandle != NULL) { 37 return procHandle; 38 } 39 #ifdef __APPLE__ 40 procHandle = (void*)dlopen(NULL, RTLD_FIRST); 41 #else 42 procHandle = (void*)dlopen(NULL, RTLD_LAZY); 43 #endif 44 return procHandle; 45 } 46 47 void buildJniFunctionName(const char *sym, const char *cname, 48 char *jniEntryName) { 49 strcpy(jniEntryName, sym); 50 if (cname != NULL) { 51 strcat(jniEntryName, "_"); 52 strcat(jniEntryName, cname); 53 } 54 } 55 56 size_t 57 getLastErrorString(char *buf, size_t len) 58 { 59 char tmpbuf[1024]; 60 int n = 0; 61 62 if (errno == 0 || len < 1) return 0; 63 64 jdk_strerror(errno, tmpbuf, (size_t) 1024); 65 n = strlen(tmpbuf); 66 if (n >= (int) len) 67 n = (int) len - 1; 68 69 strncpy(buf, tmpbuf, n); 70 buf[n] = '\0'; 71 return n; 72 }