| /* |
| * 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 "java_io_FileDescriptor.h" |
| #include "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 |
| */ |
| |
| JNIEXPORT void JNICALL |
| FileDescriptor_initIDs(JNIEnv *env, jclass fdClass) { |
| 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) { |
| int error; |
| socklen_t error_length = sizeof(error); |
| return TEMP_FAILURE_RETRY(getsockopt(fd, SOL_SOCKET, SO_ERROR, &error, &error_length)) == 0; |
| } |
| |
| static JNINativeMethod gMethods[] = { |
| NATIVE_METHOD(FileDescriptor, initIDs, "()V"), |
| 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)); |
| } |