Showing the changes to java/pkg/sun/net/sdp/SdpSupport.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 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 | package sun.net.sdp; | ||
| 27 | |||
| 28 | import java.io.IOException; | ||
| 29 | import java.io.FileDescriptor; | ||
| 30 | import java.security.AccessController; | ||
| 31 | |||
| 32 | import sun.misc.SharedSecrets; | ||
| 33 | import sun.misc.JavaIOFileDescriptorAccess; | ||
| 34 | |||
| 35 | |||
| 36 | /** | ||
| 37 | * This class defines methods for creating SDP sockets or "converting" existing | ||
| 38 | * file descriptors, referencing (unbound) TCP sockets, to SDP. | ||
| 39 | */ | ||
| 40 | |||
| 41 | public final class SdpSupport { | ||
| 42 | private static final String os = AccessController | ||
| 43 | .doPrivileged(new sun.security.action.GetPropertyAction("os.name")); | ||
| 44 | private static final boolean isSupported = (os.equals("SunOS") || (os.equals("Linux"))); | ||
| 45 | private static final JavaIOFileDescriptorAccess fdAccess = | ||
| 46 | SharedSecrets.getJavaIOFileDescriptorAccess(); | ||
| 47 | |||
| 48 | private SdpSupport() { } | ||
| 49 | |||
| 50 | /** | ||
| 51 | * Creates a SDP socket, returning file descriptor referencing the socket. | ||
| 52 | */ | ||
| 53 | public static FileDescriptor createSocket() throws IOException { | ||
| 54 | if (!isSupported) | ||
| 55 | throw new UnsupportedOperationException("SDP not supported on this platform"); | ||
| 56 | int fdVal = create0(); | ||
| 57 | FileDescriptor fd = new FileDescriptor(); | ||
| 58 | fdAccess.set(fd, fdVal); | ||
| 59 | return fd; | ||
| 60 | } | ||
| 61 | |||
| 62 | /** | ||
| 63 | * Converts an existing file descriptor, that references an unbound TCP socket, | ||
| 64 | * to SDP. | ||
| 65 | */ | ||
| 66 | public static void convertSocket(FileDescriptor fd) throws IOException { | ||
| 67 | if (!isSupported) | ||
| 68 | throw new UnsupportedOperationException("SDP not supported on this platform"); | ||
| 69 | int fdVal = fdAccess.get(fd); | ||
| 70 | convert0(fdVal); | ||
| 71 | } | ||
| 72 | |||
| 73 | private static native int create0() throws IOException; | ||
| 74 | |||
| 75 | private static native void convert0(int fd) throws IOException; | ||
| 76 | |||
| 77 | static { | ||
| 78 | AccessController.doPrivileged( | ||
| 79 | new sun.security.action.LoadLibraryAction("net")); | ||
| 80 | } | ||
| 81 | } | ||