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 jfieldID fos_pgsz; /* id for jobject 'pageSize' in java.io.FileOutputStream */ 42 43 /************************************************************** 44 * static methods to store field ID's in initializers 45 */ 46 47 JNIEXPORT void JNICALL 48 Java_java_io_FileOutputStream_initIDs(JNIEnv *env, jclass fdClass) { 49 fos_fd = (*env)->GetFieldID(env, fdClass, "fd", "Ljava/io/FileDescriptor;"); 50 fos_pgsz = (*env)->GetFieldID(env, fdClass, "pageSize", "I"); 51 } 52 53 /************************************************************** 54 * Output stream 55 */ 56 57 JNIEXPORT void JNICALL 58 Java_java_io_FileOutputStream_open0(JNIEnv *env, jobject this, 59 jstring path, jboolean append, jboolean direct) { 60 if (direct) { 61 fileOpen(env, this, path, fos_fd, 62 O_WRONLY | O_CREAT | (append ? O_APPEND : O_TRUNC) | O_DIRECT); 63 } else { 64 fileOpen(env, this, path, fos_fd, 65 O_WRONLY | O_CREAT | (append ? O_APPEND : O_TRUNC)); 66 } 67 } 68 69 JNIEXPORT void JNICALL 70 Java_java_io_FileOutputStream_write(JNIEnv *env, jobject this, jint byte, jboolean append) { 71 writeSingle(env, this, byte, append, fos_fd); 72 } 73 74 JNIEXPORT void JNICALL 75 Java_java_io_FileOutputStream_writeBytes(JNIEnv *env, 76 jobject this, jbyteArray bytes, jint off, jint len, jboolean append) { 77 writeBytes(env, this, bytes, off, len, append, fos_fd); 78 } 79 80 JNIEXPORT void JNICALL 81 Java_java_io_FileOutputStream_writeBytesD(JNIEnv *env, 82 jobject this, jbyteArray bytes, jint off, jint len, jboolean append) { 83 writeBytesD(env, this, bytes, off, len, append, fos_fd, fos_pgsz); 84 } 85 86 JNIEXPORT jint JNICALL 87 Java_java_io_FileOutputStream_getPageSize0(JNIEnv *env, jobject this) { 88 return getpagesize(); 89 } 90 91 JNIEXPORT void JNICALL 92 Java_java_io_FileOutputStream_close0(JNIEnv *env, jobject this) { 93 fileClose(env, this, fos_fd); 94 } 95 96 JNIEXPORT jlong JNICALL 97 Java_java_io_FileOutputStream_getCurrentLocation0(JNIEnv *env, jobject this) { 98 FD fd; 99 100 fd = GET_FD(this, fos_fd); 101 if (fd == -1) { 102 JNU_ThrowIOException(env, "Stream Closed"); 103 return -1; 104 } 105 jlong currentLocation = IO_Lseek(fd, 0, SEEK_CUR); 106 if (currentLocation == -1) { 107 JNU_ThrowIOExceptionWithLastError(env, "Seek failed"); 108 } 109 return currentLocation; 110 } 111