1 /* 2 * Copyright (c) 2000, 2010, 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 <netdb.h> 27 #include <sys/types.h> 28 #include <sys/socket.h> 29 #include <stdlib.h> 30 #include <errno.h> 31 #include <string.h> 32 #include <poll.h> 33 34 #if __linux__ 35 #include <netinet/in.h> 36 #endif 37 38 #include "jni.h" 39 #include "jni_util.h" 40 #include "net_util.h" 41 #include "jvm.h" 42 #include "jlong.h" 43 #include "sun_nio_ch_SocketChannelImpl.h" 44 #include "nio_util.h" 45 #include "nio.h" 46 47 48 JNIEXPORT jint JNICALL 49 Java_sun_nio_ch_SocketChannelImpl_checkConnect(JNIEnv *env, jobject this, 50 jobject fdo, jboolean block, 51 jboolean ready) 52 { 53 int error = 0; 54 socklen_t n = sizeof(int); 55 jint fd = fdval(env, fdo); 56 int result = 0; 57 struct pollfd poller; 58 59 poller.revents = 1; 60 if (!ready) { 61 poller.fd = fd; 62 poller.events = POLLOUT; 63 poller.revents = 0; 64 result = poll(&poller, 1, block ? -1 : 0); 65 if (result < 0) { 66 JNU_ThrowIOExceptionWithLastError(env, "Poll failed"); 67 return IOS_THROWN; 68 } 69 if (!block && (result == 0)) 70 return IOS_UNAVAILABLE; 71 } 72 73 if (poller.revents) { 74 errno = 0; 75 result = getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &n); 76 if (result < 0) { 77 handleSocketError(env, errno); 78 return JNI_FALSE; 79 } else if (error) { 80 handleSocketError(env, error); 81 return JNI_FALSE; 82 } 83 return 1; 84 } 85 return 0; 86 } 87 88 JNIEXPORT jint JNICALL 89 Java_sun_nio_ch_SocketChannelImpl_sendOutOfBandData(JNIEnv* env, jclass this, 90 jobject fdo, jbyte b) 91 { 92 int n = send(fdval(env, fdo), (const void*)&b, 1, MSG_OOB); 93 return convertReturnVal(env, n, JNI_FALSE); 94 }