1 /* 2 * Copyright (c) 2018, 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 /* 27 * Test if rsocket is available 28 */ 29 #include <stdlib.h> 30 #ifdef __linux__ 31 #include <dlfcn.h> 32 #include <sys/socket.h> 33 #include <stdio.h> 34 #include <string.h> 35 #endif 36 #include "jni.h" 37 38 jfieldID fid; 39 40 /* 41 * Class: RsocketTest 42 * Method: isRsocketAvailable0 43 * Signature: ()Z 44 */ 45 JNIEXPORT jboolean 46 Java_RsocketTest_isRsocketAvailable0(JNIEnv *env, jclass cls) { 47 jboolean result = JNI_FALSE; 48 #ifdef __linux__ 49 void *handle; 50 int (*rs)(int, int, int); 51 char str[74]; 52 strcpy(str, "librdmacm.so.1: cannot open shared object file: No such file or directory"); 53 fid = (*env)->GetStaticFieldID(env, cls , "libInstalled", "Z"); 54 55 handle = dlopen("librdmacm.so.1", RTLD_NOW); 56 if (!handle) { 57 int ret = strncmp(str, dlerror(), 74); 58 if (ret == 0) { 59 (*env)->SetStaticBooleanField(env, cls, fid, JNI_FALSE); 60 } 61 return JNI_FALSE; 62 } else { 63 (*env)->SetStaticBooleanField(env, cls, fid, JNI_TRUE); 64 } 65 66 rs = dlsym(handle, "rsocket"); 67 if (!rs) 68 return JNI_FALSE; 69 70 if ((*rs)(AF_INET, SOCK_STREAM, 0) > 0) 71 result = JNI_TRUE; 72 73 dlclose(handle); 74 #endif 75 return result; 76 }