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97 lines
3 KiB
C
97 lines
3 KiB
C
/*
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* Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "jni_util.h"
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/*
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* Macros to use the right data type for file descriptors
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*/
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#define FD jint
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/*
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* Prototypes for functions in io_util_md.c called from io_util.c,
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* FileDescriptor.c, FileInputStream.c, FileOutputStream.c,
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* UnixFileSystem_md.c
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*/
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ssize_t handleWrite(FD fd, const void *buf, jint len);
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ssize_t handleRead(FD fd, void *buf, jint len);
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jint handleAvailable(FD fd, jlong *pbytes);
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jint handleSetLength(FD fd, jlong length);
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jlong handleGetLength(FD fd);
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FD handleOpen(const char *path, int oflag, int mode);
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/*
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* Functions to get fd from the java.io.FileDescriptor field
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* of an object. These functions rely on having an appropriately
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* defined object with a FileDescriptor object at the fid offset.
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* If the FD object is null, return -1 to avoid crashing VM.
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*/
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FD getFD(JNIEnv *env, jobject cur, jfieldID fid);
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/*
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* Macros to set/get fd when inside java.io.FileDescriptor
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*/
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#define THIS_FD(obj) (*env)->GetIntField(env, obj, IO_fd_fdID)
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/*
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* Route the routines
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*/
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#define IO_Sync fsync
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#define IO_Read handleRead
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#define IO_Write handleWrite
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#define IO_Append handleWrite
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#define IO_Available handleAvailable
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#define IO_SetLength handleSetLength
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#define IO_GetLength handleGetLength
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#ifdef _ALLBSD_SOURCE
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#define open64 open
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#define fstat64 fstat
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#define stat64 stat
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#define lseek64 lseek
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#define ftruncate64 ftruncate
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#define IO_Lseek lseek
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#else
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#define IO_Lseek lseek64
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#endif
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/*
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* On Solaris, the handle field is unused
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*/
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#define SET_HANDLE(fd) return (jlong)-1
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/*
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* Retry the operation if it is interrupted
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*/
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#define RESTARTABLE(_cmd, _result) \
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do { \
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_result = _cmd; \
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} while ((_result == -1) && (errno == EINTR))
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void fileDescriptorClose(JNIEnv *env, jobject this);
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#ifdef MACOSX
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jstring newStringPlatform(JNIEnv *env, const char* str);
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#endif
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