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/*
* Copyright (c) 1997, 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.
*/
#include <sys/socket.h>
#include <sys/types.h>
#include "jni.h"
#include "jni_util.h"
#include "jvm.h"
#include <nativehelper/JNIHelp.h>
#define NATIVE_METHOD(className, functionName, signature) \
{ #functionName, signature, (void*)(className ## _ ## functionName) }
/*******************************************************************/
/* BEGIN JNI ********* BEGIN JNI *********** BEGIN JNI ************/
/*******************************************************************/
/* field id for jint 'fd' in java.io.FileDescriptor */
jfieldID IO_fd_fdID;
/**************************************************************
* static methods to store field ID's in initializers
*/
static void FileDescriptor_initIDs(JNIEnv *env) {
jclass fdClass = (*env)->FindClass(env, "java/io/FileDescriptor");
IO_fd_fdID = (*env)->GetFieldID(env, fdClass, "descriptor", "I");
}
/**************************************************************
* File Descriptor
*/
JNIEXPORT void JNICALL
FileDescriptor_sync(JNIEnv *env, jobject this) {
int fd = (*env)->GetIntField(env, this, IO_fd_fdID);
if (JVM_Sync(fd) == -1) {
JNU_ThrowByName(env, "java/io/SyncFailedException", "sync failed");
}
}
JNIEXPORT jboolean JNICALL FileDescriptor_isSocket(JNIEnv *env, jclass ignored, jint fd) {
// BEGIN Android-changed: isSocket - do not clear socket error code
int domain;
socklen_t domain_length = sizeof(domain);
return TEMP_FAILURE_RETRY(getsockopt(fd, SOL_SOCKET, SO_DOMAIN, &domain, &domain_length)) == 0;
// END Android-changed: isSocket - do not clear socket error code
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(FileDescriptor, sync, "()V"),
NATIVE_METHOD(FileDescriptor, isSocket, "(I)Z"),
};
void register_java_io_FileDescriptor(JNIEnv* env) {
jniRegisterNativeMethods(env, "java/io/FileDescriptor", gMethods, NELEM(gMethods));
FileDescriptor_initIDs(env);
}
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