120 lines
3.4 KiB
C++
120 lines
3.4 KiB
C++
/* $NetBSD: file_fat.cpp,v 1.2 2001/05/08 18:51:22 uch Exp $ */
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/*-
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* Copyright (c) 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by UCHIYAMA Yasushi.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <file.h>
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#include <file_fat.h>
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#include <console.h>
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FatFile::FatFile(Console *&cons)
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: File(cons)
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{
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_debug = TRUE;
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DPRINTF((TEXT("File: FAT\n")));
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}
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FatFile::~FatFile(void)
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{
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}
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BOOL
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FatFile::setRoot(TCHAR *drive)
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{
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wcsncpy(_drive, drive, MAX_PATH);
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wcsncpy(_filename, drive, MAX_PATH);
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return TRUE;
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}
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BOOL
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FatFile::open(const TCHAR *name, u_int32_t flags)
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{
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// drive + filename
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wcsncpy(_filename, _drive, MAX_PATH);
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wcscat(_filename, name);
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// open it.
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_handle = CreateFile(_filename, GENERIC_READ | GENERIC_WRITE,
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0, 0, flags, 0, 0);
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if (_handle == INVALID_HANDLE_VALUE) {
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DPRINTF((TEXT("can't open \"%s\". cause = %d\n"),
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name, GetLastError()));
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return FALSE;
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}
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size_t sz = size();
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if (sz == ~0) {
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DPRINTF((TEXT("can't get file size.\n")));
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CloseHandle(_handle);
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return FALSE;
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}
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DPRINTF((TEXT("open file \"%s\"(%d byte).\n"), _filename, sz));
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return TRUE;
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}
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size_t
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FatFile::read(void *buf, size_t bytes, off_t ofs)
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{
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unsigned long readed;
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if (ofs != -1)
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SetFilePointer(_handle, ofs, 0, FILE_BEGIN);
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ReadFile(_handle, buf, bytes, &readed, 0);
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return size_t(readed);
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}
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size_t
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FatFile::write(const void *buf, size_t bytes, off_t ofs)
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{
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unsigned long wrote;
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if (ofs != -1)
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SetFilePointer(_handle, ofs, 0, FILE_BEGIN);
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WriteFile(_handle, buf, bytes, &wrote, 0);
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return size_t(wrote);
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}
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BOOL
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FatFile::seek(off_t ofs)
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{
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SetFilePointer(_handle, ofs, 0, FILE_BEGIN);
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return TRUE;
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}
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