1 /*
   2  * Copyright (c) 1997, 2010, 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 
  30 #include "io_util.h"
  31 #include "io_util_md.h"
  32 #include "java_io_FileOutputStream.h"
  33 
  34 #include <fcntl.h>
  35 
  36 /*******************************************************************/
  37 /*  BEGIN JNI ********* BEGIN JNI *********** BEGIN JNI ************/
  38 /*******************************************************************/
  39 
  40 jfieldID fos_fd; /* id for jobject 'fd' in java.io.FileOutputStream */
  41 
  42 /**************************************************************
  43  * static methods to store field ID's in initializers
  44  */
  45 
  46 JNIEXPORT void JNICALL
  47 Java_java_io_FileOutputStream_initIDs(JNIEnv *env, jclass fdClass) {
  48     fos_fd = (*env)->GetFieldID(env, fdClass, "fd", "Ljava/io/FileDescriptor;");
  49 }
  50 
  51 /**************************************************************
  52  * Output stream
  53  */
  54 
  55 JNIEXPORT void JNICALL
  56 Java_java_io_FileOutputStream_open(JNIEnv *env, jobject this,
  57                                    jstring path, jboolean append) {
  58     fileOpen(env, this, path, fos_fd,
  59              O_WRONLY | O_CREAT | (append ? O_APPEND : O_TRUNC));
  60 }
  61 
  62 JNIEXPORT void JNICALL
  63 Java_java_io_FileOutputStream_write(JNIEnv *env, jobject this, jint byte, jboolean append) {
  64     writeSingle(env, this, byte, append, fos_fd);
  65 }
  66 
  67 JNIEXPORT void JNICALL
  68 Java_java_io_FileOutputStream_writeBytes(JNIEnv *env,
  69     jobject this, jbyteArray bytes, jint off, jint len, jboolean append) {
  70     writeBytes(env, this, bytes, off, len, append, fos_fd);
  71 }
  72 
  73 JNIEXPORT void JNICALL
  74 Java_java_io_FileOutputStream_close0(JNIEnv *env, jobject this) {
  75     fileClose(env, this, fos_fd);
  76 }