1 /* 2 * Copyright (c) 2017, 2019, 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 package jdk.net; 26 27 import java.net.SocketException; 28 import java.nio.file.attribute.UserPrincipal; 29 import java.nio.file.attribute.GroupPrincipal; 30 import java.security.AccessController; 31 import java.security.PrivilegedAction; 32 import jdk.net.ExtendedSocketOptions.PlatformSocketOptions; 33 import sun.nio.fs.UnixUserGroupUtil; 34 35 class LinuxSocketOptions extends PlatformSocketOptions { 36 37 public LinuxSocketOptions() { 38 } 39 40 @Override 41 void setQuickAck(int fd, boolean on) throws SocketException { 42 setQuickAck0(fd, on); 43 } 44 45 @Override 46 boolean getQuickAck(int fd) throws SocketException { 47 return getQuickAck0(fd); 48 } 49 50 @Override 51 public boolean quickAckSupported() { 52 return quickAckSupported0(); 53 } 54 55 @Override 56 boolean keepAliveOptionsSupported() { 57 return keepAliveOptionsSupported0(); 58 } 59 60 boolean peerCredentialsSupported() { 61 return true; 62 } 63 64 @Override 65 void setTcpkeepAliveProbes(int fd, final int value) throws SocketException { 66 setTcpkeepAliveProbes0(fd, value); 67 } 68 69 @Override 70 void setTcpKeepAliveTime(int fd, final int value) throws SocketException { 71 setTcpKeepAliveTime0(fd, value); 72 } 73 74 @Override 75 void setTcpKeepAliveIntvl(int fd, final int value) throws SocketException { 76 setTcpKeepAliveIntvl0(fd, value); 77 } 78 79 @Override 80 int getTcpkeepAliveProbes(int fd) throws SocketException { 81 return getTcpkeepAliveProbes0(fd); 82 } 83 84 @Override 85 int getTcpKeepAliveTime(int fd) throws SocketException { 86 return getTcpKeepAliveTime0(fd); 87 } 88 89 @Override 90 int getTcpKeepAliveIntvl(int fd) throws SocketException { 91 return getTcpKeepAliveIntvl0(fd); 92 } 93 94 @Override 95 boolean incomingNapiIdSupported() { 96 return incomingNapiIdSupported0(); 97 } 98 99 @Override 100 int getIncomingNapiId(int fd) throws SocketException { 101 return getIncomingNapiId0(fd); 102 } 103 104 105 @Override 106 UnixDomainPrincipal getSoPeerCred(int fd) throws SocketException { 107 int[] result = new int[2]; 108 109 getSoPeerCred0(fd, result); 110 UserPrincipal user = UnixUserGroupUtil.fromUid(result[0]); 111 GroupPrincipal group = UnixUserGroupUtil.fromGid(result[1]); 112 return new UnixDomainPrincipal(user, group); 113 } 114 115 private static native void setTcpkeepAliveProbes0(int fd, int value) throws SocketException; 116 private static native void setTcpKeepAliveTime0(int fd, int value) throws SocketException; 117 private static native void setTcpKeepAliveIntvl0(int fd, int value) throws SocketException; 118 private static native int getTcpkeepAliveProbes0(int fd) throws SocketException; 119 private static native int getTcpKeepAliveTime0(int fd) throws SocketException; 120 private static native int getTcpKeepAliveIntvl0(int fd) throws SocketException; 121 private static native void setQuickAck0(int fd, boolean on) throws SocketException; 122 private static native boolean getQuickAck0(int fd) throws SocketException; 123 private static native void getSoPeerCred0(int fd, int[] result) throws SocketException; 124 private static native boolean keepAliveOptionsSupported0(); 125 private static native boolean quickAckSupported0(); 126 private static native boolean incomingNapiIdSupported0(); 127 private static native int getIncomingNapiId0(int fd) throws SocketException; 128 static { 129 if (System.getSecurityManager() == null) { 130 System.loadLibrary("extnet"); 131 } else { 132 AccessController.doPrivileged((PrivilegedAction<Void>) () -> { 133 System.loadLibrary("extnet"); 134 return null; 135 }); 136 } 137 } 138 } 139