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https://github.com/openjdk/jdk.git
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071bd521bc
Reviewed-by: alanb, bchristi, dcubed, dfuchs, eosterlund, erikj, glaubitz, ihse, iignatyev, jjiang, kbarrett, ksrini, kvn, naoto, prr, rriggs, serb, sspitsyn, stefank, tschatzl, valeriep, weijun, weijun
120 lines
3.6 KiB
C
120 lines
3.6 KiB
C
/*
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* Copyright (c) 2009, 2020, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <errno.h>
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#if defined(__linux__)
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#if !defined(AF_INET_SDP)
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#define AF_INET_SDP 27
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#endif
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#endif
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#include "jni.h"
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#include "jni_util.h"
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#include "net_util.h"
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#define RESTARTABLE(_cmd, _result) do { \
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do { \
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_result = _cmd; \
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} while((_result == -1) && (errno == EINTR)); \
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} while(0)
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/**
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* Creates a SDP socket.
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*/
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static int create(JNIEnv* env)
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{
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int s;
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#if defined(__linux__)
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/**
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* IPv6 not supported by SDP on Linux
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*/
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if (ipv6_available()) {
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JNU_ThrowIOException(env, "IPv6 not supported");
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return -1;
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}
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s = socket(AF_INET_SDP, SOCK_STREAM, 0);
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#else
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/* not supported on other platforms at this time */
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s = -1;
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errno = EPROTONOSUPPORT;
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#endif
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if (s < 0)
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JNU_ThrowIOExceptionWithLastError(env, "socket");
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return s;
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}
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/**
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* Creates a SDP socket, returning file descriptor referencing the socket.
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*/
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JNIEXPORT jint JNICALL
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Java_sun_net_sdp_SdpSupport_create0(JNIEnv *env, jclass cls)
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{
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return create(env);
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}
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/**
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* Converts an existing file descriptor, that references an unbound TCP socket,
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* to SDP.
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*/
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JNIEXPORT void JNICALL
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Java_sun_net_sdp_SdpSupport_convert0(JNIEnv *env, jclass cls, int fd)
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{
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int s = create(env);
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if (s >= 0) {
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socklen_t len;
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int arg, res;
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struct linger linger;
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/* copy socket options that are relevant to SDP */
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len = sizeof(arg);
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if (getsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char*)&arg, &len) == 0)
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setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&arg, len);
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#ifdef SO_REUSEPORT
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len = sizeof(arg);
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if (getsockopt(fd, SOL_SOCKET, SO_REUSEPORT, (char*)&arg, &len) == 0)
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setsockopt(s, SOL_SOCKET, SO_REUSEPORT, (char*)&arg, len);
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#endif
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len = sizeof(arg);
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if (getsockopt(fd, SOL_SOCKET, SO_OOBINLINE, (char*)&arg, &len) == 0)
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setsockopt(s, SOL_SOCKET, SO_OOBINLINE, (char*)&arg, len);
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len = sizeof(linger);
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if (getsockopt(fd, SOL_SOCKET, SO_LINGER, (void*)&linger, &len) == 0)
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setsockopt(s, SOL_SOCKET, SO_LINGER, (char*)&linger, len);
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RESTARTABLE(dup2(s, fd), res);
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if (res < 0)
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JNU_ThrowIOExceptionWithLastError(env, "dup2");
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res = close(s);
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if (res < 0 && !(*env)->ExceptionOccurred(env))
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JNU_ThrowIOExceptionWithLastError(env, "close");
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}
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}
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