1 /* $NetBSD: file_fat.cpp,v 1.5 2008/04/28 20:23:20 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2001, 2002 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <file.h> 33 #include <file_fat.h> 34 #include <console.h> 35 36 FatFile::FatFile(Console *&cons) 37 : File(cons) 38 { 39 40 _debug = TRUE; 41 DPRINTF((TEXT("FileManager: FAT\n"))); 42 } 43 44 FatFile::~FatFile(void) 45 { 46 47 } 48 49 BOOL 50 FatFile::setRoot(TCHAR *drive) 51 { 52 53 wcsncpy(_drive, drive, MAX_PATH); 54 wcsncpy(_filename, drive, MAX_PATH); 55 56 return TRUE; 57 } 58 59 BOOL 60 FatFile::open(const TCHAR *name, uint32_t flags) 61 { 62 // drive + filename 63 wsprintf(_filename, TEXT("%s%s"), _drive, name); 64 65 // open it. 66 _handle = CreateFile(_filename, GENERIC_READ, 0, 0, 67 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); 68 if (_handle == INVALID_HANDLE_VALUE) { 69 DPRINTF((TEXT("can't open \"%s\". cause = %d\n"), 70 _filename, GetLastError())); 71 return FALSE; 72 } 73 74 size_t sz = size(); 75 if (sz == ~0) { 76 DPRINTF((TEXT("can't get file size.\n"))); 77 CloseHandle(_handle); 78 return FALSE; 79 } 80 DPRINTF((TEXT("open file \"%s\"(%d byte).\n"), _filename, sz)); 81 82 return TRUE; 83 } 84 85 size_t 86 FatFile::read(void *buf, size_t bytes, off_t ofs) 87 { 88 unsigned long readed; 89 90 if (ofs != -1) 91 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 92 ReadFile(_handle, buf, bytes, &readed, 0); 93 94 return size_t(readed); 95 } 96 97 size_t 98 FatFile::write(const void *buf, size_t bytes, off_t ofs) 99 { 100 unsigned long wrote; 101 102 if (ofs != -1) 103 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 104 WriteFile(_handle, buf, bytes, &wrote, 0); 105 106 return size_t(wrote); 107 } 108 109 BOOL 110 FatFile::seek(off_t ofs) 111 { 112 113 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 114 115 return TRUE; 116 } 117