1/* 2 * Copyright (c) 2003, 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#include "jni.h" 27#include "jni_util.h" 28#include "jvm.h" 29#include "io_util.h" 30#include "jlong.h" 31#include "io_util_md.h" 32 33#include "java_io_FileDescriptor.h" 34 35/*******************************************************************/ 36/* BEGIN JNI ********* BEGIN JNI *********** BEGIN JNI ************/ 37/*******************************************************************/ 38 39/* field id for jint 'fd' in java.io.FileDescriptor */ 40jfieldID IO_fd_fdID; 41 42/* field id for jlong 'handle' in java.io.FileDescriptor */ 43jfieldID IO_handle_fdID; 44 45/* field id for jboolean 'append' in java.io.FileDescriptor */ 46jfieldID IO_append_fdID; 47 48/************************************************************** 49 * static methods to store field IDs in initializers 50 */ 51 52JNIEXPORT void JNICALL 53Java_java_io_FileDescriptor_initIDs(JNIEnv *env, jclass fdClass) { 54 CHECK_NULL(IO_fd_fdID = (*env)->GetFieldID(env, fdClass, "fd", "I")); 55 CHECK_NULL(IO_handle_fdID = (*env)->GetFieldID(env, fdClass, "handle", "J")); 56 CHECK_NULL(IO_append_fdID = (*env)->GetFieldID(env, fdClass, "append", "Z")); 57} 58 59JNIEXPORT jlong JNICALL 60Java_java_io_FileDescriptor_set(JNIEnv *env, jclass fdClass, jint fd) { 61 SET_HANDLE(fd); 62} 63 64/************************************************************** 65 * File Descriptor 66 */ 67 68JNIEXPORT void JNICALL 69Java_java_io_FileDescriptor_sync(JNIEnv *env, jobject this) { 70 FD fd = THIS_FD(this); 71 if (IO_Sync(fd) == -1) { 72 JNU_ThrowByName(env, "java/io/SyncFailedException", "sync failed"); 73 } 74} 75