1 /* $NetBSD: file_fat.cpp,v 1.2 2001/05/08 18:51:22 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <file.h> 40 #include <file_fat.h> 41 #include <console.h> 42 43 FatFile::FatFile(Console *&cons) 44 : File(cons) 45 { 46 _debug = TRUE; 47 DPRINTF((TEXT("File: FAT\n"))); 48 } 49 50 FatFile::~FatFile(void) 51 { 52 } 53 54 BOOL 55 FatFile::setRoot(TCHAR *drive) 56 { 57 wcsncpy(_drive, drive, MAX_PATH); 58 wcsncpy(_filename, drive, MAX_PATH); 59 60 return TRUE; 61 } 62 63 BOOL 64 FatFile::open(const TCHAR *name, u_int32_t flags) 65 { 66 // drive + filename 67 wcsncpy(_filename, _drive, MAX_PATH); 68 wcscat(_filename, name); 69 // open it. 70 _handle = CreateFile(_filename, GENERIC_READ | GENERIC_WRITE, 71 0, 0, flags, 0, 0); 72 if (_handle == INVALID_HANDLE_VALUE) { 73 DPRINTF((TEXT("can't open \"%s\". cause = %d\n"), 74 name, GetLastError())); 75 return FALSE; 76 } 77 78 size_t sz = size(); 79 if (sz == ~0) { 80 DPRINTF((TEXT("can't get file size.\n"))); 81 CloseHandle(_handle); 82 return FALSE; 83 } 84 DPRINTF((TEXT("open file \"%s\"(%d byte).\n"), _filename, sz)); 85 86 return TRUE; 87 } 88 89 size_t 90 FatFile::read(void *buf, size_t bytes, off_t ofs) 91 { 92 unsigned long readed; 93 94 if (ofs != -1) 95 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 96 ReadFile(_handle, buf, bytes, &readed, 0); 97 98 return size_t(readed); 99 } 100 101 size_t 102 FatFile::write(const void *buf, size_t bytes, off_t ofs) 103 { 104 unsigned long wrote; 105 106 if (ofs != -1) 107 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 108 WriteFile(_handle, buf, bytes, &wrote, 0); 109 110 return size_t(wrote); 111 } 112 113 BOOL 114 FatFile::seek(off_t ofs) 115 { 116 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 117 118 return TRUE; 119 } 120