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/*
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* Copyright (c) 2000, 2008, 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 <stdlib.h>
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#include <netdb.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#if __linux__
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#include <netinet/in.h>
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#endif
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#if defined(__solaris__) && !defined(_SOCKLEN_T)
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typedef size_t socklen_t; /* New in SunOS 5.7, so need this for 5.6 */
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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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#include "jvm.h"
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#include "jlong.h"
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#include "sun_nio_ch_ServerSocketChannelImpl.h"
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#include "nio.h"
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#include "nio_util.h"
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static jfieldID fd_fdID; /* java.io.FileDescriptor.fd */
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static jclass isa_class; /* java.net.InetSocketAddress */
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static jmethodID isa_ctorID; /* .InetSocketAddress(InetAddress, int) */
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JNIEXPORT void JNICALL
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Java_sun_nio_ch_ServerSocketChannelImpl_initIDs(JNIEnv *env, jclass c)
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{
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jclass cls;
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cls = (*env)->FindClass(env, "java/io/FileDescriptor");
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fd_fdID = (*env)->GetFieldID(env, cls, "fd", "I");
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cls = (*env)->FindClass(env, "java/net/InetSocketAddress");
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isa_class = (*env)->NewGlobalRef(env, cls);
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isa_ctorID = (*env)->GetMethodID(env, cls, "<init>",
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"(Ljava/net/InetAddress;I)V");
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}
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JNIEXPORT jint JNICALL
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Java_sun_nio_ch_ServerSocketChannelImpl_accept0(JNIEnv *env, jobject this,
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jobject ssfdo, jobject newfdo,
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jobjectArray isaa)
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{
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jint ssfd = (*env)->GetIntField(env, ssfdo, fd_fdID);
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jint newfd;
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struct sockaddr *sa;
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int alloc_len;
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jobject remote_ia = 0;
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jobject isa;
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jint remote_port;
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NET_AllocSockaddr(&sa, &alloc_len);
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/*
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* accept connection but ignore ECONNABORTED indicating that
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* a connection was eagerly accepted but was reset before
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* accept() was called.
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*/
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for (;;) {
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socklen_t sa_len = alloc_len;
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newfd = accept(ssfd, sa, &sa_len);
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if (newfd >= 0) {
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break;
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}
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if (errno != ECONNABORTED) {
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break;
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}
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/* ECONNABORTED => restart accept */
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}
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if (newfd < 0) {
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free((void *)sa);
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if (errno == EAGAIN)
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return IOS_UNAVAILABLE;
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if (errno == EINTR)
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return IOS_INTERRUPTED;
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JNU_ThrowIOExceptionWithLastError(env, "Accept failed");
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return IOS_THROWN;
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}
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(*env)->SetIntField(env, newfdo, fd_fdID, newfd);
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remote_ia = NET_SockaddrToInetAddress(env, sa, (int *)&remote_port);
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free((void *)sa);
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isa = (*env)->NewObject(env, isa_class, isa_ctorID,
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remote_ia, remote_port);
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(*env)->SetObjectArrayElement(env, isaa, 0, isa);
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return 1;
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}
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