| /* |
| * Copyright (c) 2003, 2013, 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 "jni.h" |
| #include "jni_util.h" |
| |
| /* |
| * Macros to use the right data type for file descriptors |
| */ |
| #define FD jlong |
| |
| /* |
| * Prototypes for functions in io_util_md.c called from io_util.c, |
| * FileDescriptor.c, FileInputStream.c, FileOutputStream.c, |
| * ProcessImpl_md.c |
| */ |
| WCHAR* pathToNTPath(JNIEnv *env, jstring path, jboolean throwFNFE); |
| WCHAR* fileToNTPath(JNIEnv *env, jobject file, jfieldID id); |
| WCHAR* getPrefixed(const WCHAR* path, int pathlen); |
| WCHAR* currentDir(int di); |
| int currentDirLength(const WCHAR* path, int pathlen); |
| int handleAvailable(FD fd, jlong *pbytes); |
| int handleSync(FD fd); |
| int handleSetLength(FD fd, jlong length); |
| JNIEXPORT jint handleRead(FD fd, void *buf, jint len); |
| jint handleWrite(FD fd, const void *buf, jint len); |
| jint handleAppend(FD fd, const void *buf, jint len); |
| jint handleClose(JNIEnv *env, jobject this, jfieldID fid); |
| jlong handleLseek(FD fd, jlong offset, jint whence); |
| |
| /* |
| * Returns an opaque handle to file named by "path". If an error occurs, |
| * returns -1 and an exception is pending. |
| */ |
| FD winFileHandleOpen(JNIEnv *env, jstring path, int flags); |
| |
| /* |
| * Macros to set/get fd from the java.io.FileDescriptor. |
| * If GetObjectField returns null, SET_FD will stop and GET_FD |
| * will simply return -1 to avoid crashing VM. |
| */ |
| #define SET_FD(this, fd, fid) \ |
| if ((*env)->GetObjectField(env, (this), (fid)) != NULL) \ |
| (*env)->SetLongField(env, (*env)->GetObjectField(env, (this), (fid)), IO_handle_fdID, (fd)) |
| |
| #define GET_FD(this, fid) \ |
| ((*env)->GetObjectField(env, (this), (fid)) == NULL) ? \ |
| -1 : (*env)->GetLongField(env, (*env)->GetObjectField(env, (this), (fid)), IO_handle_fdID) |
| |
| /* |
| * Macros to set/get fd when inside java.io.FileDescriptor |
| */ |
| #define THIS_FD(obj) (*env)->GetLongField(env, obj, IO_handle_fdID) |
| |
| /* |
| * Route the routines away from VM |
| */ |
| #define IO_Append handleAppend |
| #define IO_Write handleWrite |
| #define IO_Sync handleSync |
| #define IO_Read handleRead |
| #define IO_Lseek handleLseek |
| #define IO_Available handleAvailable |
| #define IO_SetLength handleSetLength |
| |
| /* |
| * Setting the handle field in Java_java_io_FileDescriptor_set for |
| * standard handles stdIn, stdOut, stdErr |
| */ |
| #define SET_HANDLE(fd) \ |
| if (fd == 0) { \ |
| return (jlong)GetStdHandle(STD_INPUT_HANDLE); \ |
| } else if (fd == 1) { \ |
| return (jlong)GetStdHandle(STD_OUTPUT_HANDLE); \ |
| } else if (fd == 2) { \ |
| return (jlong)GetStdHandle(STD_ERROR_HANDLE); \ |
| } else { \ |
| return (jlong)-1; \ |
| } \ |
| |
| /* INVALID_FILE_ATTRIBUTES is not defined in VC++6.0's header files but |
| * in later release. Keep here just in case someone is still using VC++6.0 |
| */ |
| #ifndef INVALID_FILE_ATTRIBUTES |
| #define INVALID_FILE_ATTRIBUTES ((DWORD)-1) |
| #endif |