0N/A/*
3261N/A * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A#include "jni.h"
0N/A#include "jni_util.h"
0N/A#include "jlong.h"
0N/A#include "jvm.h"
0N/A
0N/A#include "io_util.h"
0N/A#include "io_util_md.h"
0N/A#include "java_io_RandomAccessFile.h"
0N/A
0N/A#include <fcntl.h>
0N/A
0N/A/*
0N/A * static method to store field ID's in initializers
0N/A */
0N/A
0N/AjfieldID raf_fd; /* id for jobject 'fd' in java.io.RandomAccessFile */
0N/A
0N/AJNIEXPORT void JNICALL
0N/AJava_java_io_RandomAccessFile_initIDs(JNIEnv *env, jclass fdClass) {
0N/A raf_fd = (*env)->GetFieldID(env, fdClass, "fd", "Ljava/io/FileDescriptor;");
0N/A}
0N/A
0N/A
0N/AJNIEXPORT void JNICALL
0N/AJava_java_io_RandomAccessFile_open(JNIEnv *env,
0N/A jobject this, jstring path, jint mode)
0N/A{
0N/A int flags = 0;
0N/A if (mode & java_io_RandomAccessFile_O_RDONLY)
0N/A flags = O_RDONLY;
0N/A else if (mode & java_io_RandomAccessFile_O_RDWR) {
0N/A flags = O_RDWR | O_CREAT;
0N/A if (mode & java_io_RandomAccessFile_O_SYNC)
0N/A flags |= O_SYNC;
0N/A else if (mode & java_io_RandomAccessFile_O_DSYNC)
0N/A flags |= O_DSYNC;
0N/A }
0N/A fileOpen(env, this, path, raf_fd, flags);
0N/A}
0N/A
0N/AJNIEXPORT jint JNICALL
5503N/AJava_java_io_RandomAccessFile_read0(JNIEnv *env, jobject this) {
0N/A return readSingle(env, this, raf_fd);
0N/A}
0N/A
0N/AJNIEXPORT jint JNICALL
5503N/AJava_java_io_RandomAccessFile_readBytes0(JNIEnv *env,
0N/A jobject this, jbyteArray bytes, jint off, jint len) {
0N/A return readBytes(env, this, bytes, off, len, raf_fd);
0N/A}
0N/A
0N/AJNIEXPORT void JNICALL
5503N/AJava_java_io_RandomAccessFile_write0(JNIEnv *env, jobject this, jint byte) {
3200N/A writeSingle(env, this, byte, JNI_FALSE, raf_fd);
0N/A}
0N/A
0N/AJNIEXPORT void JNICALL
5503N/AJava_java_io_RandomAccessFile_writeBytes0(JNIEnv *env,
0N/A jobject this, jbyteArray bytes, jint off, jint len) {
3200N/A writeBytes(env, this, bytes, off, len, JNI_FALSE, raf_fd);
0N/A}
0N/A
0N/AJNIEXPORT jlong JNICALL
0N/AJava_java_io_RandomAccessFile_getFilePointer(JNIEnv *env, jobject this) {
0N/A FD fd;
0N/A jlong ret;
0N/A
0N/A fd = GET_FD(this, raf_fd);
0N/A if (fd == -1) {
0N/A JNU_ThrowIOException(env, "Stream Closed");
0N/A return -1;
0N/A }
0N/A if ((ret = IO_Lseek(fd, 0L, SEEK_CUR)) == -1) {
0N/A JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
0N/A }
0N/A return ret;
0N/A}
0N/A
0N/AJNIEXPORT jlong JNICALL
0N/AJava_java_io_RandomAccessFile_length(JNIEnv *env, jobject this) {
0N/A FD fd;
0N/A jlong cur = jlong_zero;
0N/A jlong end = jlong_zero;
0N/A
0N/A fd = GET_FD(this, raf_fd);
0N/A if (fd == -1) {
0N/A JNU_ThrowIOException(env, "Stream Closed");
0N/A return -1;
0N/A }
0N/A if ((cur = IO_Lseek(fd, 0L, SEEK_CUR)) == -1) {
0N/A JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
0N/A } else if ((end = IO_Lseek(fd, 0L, SEEK_END)) == -1) {
0N/A JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
0N/A } else if (IO_Lseek(fd, cur, SEEK_SET) == -1) {
0N/A JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
0N/A }
0N/A return end;
0N/A}
0N/A
0N/AJNIEXPORT void JNICALL
0N/AJava_java_io_RandomAccessFile_seek(JNIEnv *env,
0N/A jobject this, jlong pos) {
0N/A
0N/A FD fd;
0N/A
0N/A fd = GET_FD(this, raf_fd);
0N/A if (fd == -1) {
0N/A JNU_ThrowIOException(env, "Stream Closed");
0N/A return;
0N/A }
0N/A if (pos < jlong_zero) {
0N/A JNU_ThrowIOException(env, "Negative seek offset");
0N/A } else if (IO_Lseek(fd, pos, SEEK_SET) == -1) {
0N/A JNU_ThrowIOExceptionWithLastError(env, "Seek failed");
0N/A }
0N/A}
0N/A
0N/AJNIEXPORT void JNICALL
0N/AJava_java_io_RandomAccessFile_setLength(JNIEnv *env, jobject this,
0N/A jlong newLength)
0N/A{
0N/A FD fd;
0N/A jlong cur;
0N/A
0N/A fd = GET_FD(this, raf_fd);
0N/A if (fd == -1) {
0N/A JNU_ThrowIOException(env, "Stream Closed");
0N/A return;
0N/A }
0N/A if ((cur = IO_Lseek(fd, 0L, SEEK_CUR)) == -1) goto fail;
0N/A if (IO_SetLength(fd, newLength) == -1) goto fail;
0N/A if (cur > newLength) {
0N/A if (IO_Lseek(fd, 0L, SEEK_END) == -1) goto fail;
0N/A } else {
0N/A if (IO_Lseek(fd, cur, SEEK_SET) == -1) goto fail;
0N/A }
0N/A return;
0N/A
0N/A fail:
0N/A JNU_ThrowIOExceptionWithLastError(env, "setLength failed");
0N/A}