| /* |
| * Copyright (c) 2010, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.net.sdp; |
| |
| import java.io.IOException; |
| import java.io.FileDescriptor; |
| import java.security.AccessController; |
| |
| import jdk.internal.misc.SharedSecrets; |
| import jdk.internal.misc.JavaIOFileDescriptorAccess; |
| import sun.security.action.GetPropertyAction; |
| |
| |
| /** |
| * This class defines methods for creating SDP sockets or "converting" existing |
| * file descriptors, referencing (unbound) TCP sockets, to SDP. |
| */ |
| |
| public final class SdpSupport { |
| private static final String os = GetPropertyAction.getProperty("os.name"); |
| private static final boolean isSupported = (os.equals("SunOS") || (os.equals("Linux"))); |
| private static final JavaIOFileDescriptorAccess fdAccess = |
| SharedSecrets.getJavaIOFileDescriptorAccess(); |
| |
| private SdpSupport() { } |
| |
| /** |
| * Creates a SDP socket, returning file descriptor referencing the socket. |
| */ |
| public static FileDescriptor createSocket() throws IOException { |
| if (!isSupported) |
| throw new UnsupportedOperationException("SDP not supported on this platform"); |
| int fdVal = create0(); |
| FileDescriptor fd = new FileDescriptor(); |
| fdAccess.set(fd, fdVal); |
| return fd; |
| } |
| |
| /** |
| * Converts an existing file descriptor, that references an unbound TCP socket, |
| * to SDP. |
| */ |
| public static void convertSocket(FileDescriptor fd) throws IOException { |
| if (!isSupported) |
| throw new UnsupportedOperationException("SDP not supported on this platform"); |
| int fdVal = fdAccess.get(fd); |
| convert0(fdVal); |
| } |
| |
| private static native int create0() throws IOException; |
| |
| private static native void convert0(int fd) throws IOException; |
| |
| static { |
| AccessController.doPrivileged( |
| new java.security.PrivilegedAction<Void>() { |
| public Void run() { |
| System.loadLibrary("net"); |
| return null; |
| } |
| }); |
| } |
| } |