1 /* $NetBSD: file_fat.cpp,v 1.3 2002/02/04 17:31:05 uch 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 * 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 47 _debug = TRUE; 48 DPRINTF((TEXT("FileManager: FAT\n"))); 49 } 50 51 FatFile::~FatFile(void) 52 { 53 54 } 55 56 BOOL 57 FatFile::setRoot(TCHAR *drive) 58 { 59 60 wcsncpy(_drive, drive, MAX_PATH); 61 wcsncpy(_filename, drive, MAX_PATH); 62 63 return TRUE; 64 } 65 66 BOOL 67 FatFile::open(const TCHAR *name, u_int32_t flags) 68 { 69 // drive + filename 70 wsprintf(_filename, TEXT("%s%s"), _drive, name); 71 72 // open it. 73 _handle = CreateFile(_filename, GENERIC_READ, 0, 0, 74 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); 75 if (_handle == INVALID_HANDLE_VALUE) { 76 DPRINTF((TEXT("can't open \"%s\". cause = %d\n"), 77 _filename, GetLastError())); 78 return FALSE; 79 } 80 81 size_t sz = size(); 82 if (sz == ~0) { 83 DPRINTF((TEXT("can't get file size.\n"))); 84 CloseHandle(_handle); 85 return FALSE; 86 } 87 DPRINTF((TEXT("open file \"%s\"(%d byte).\n"), _filename, sz)); 88 89 return TRUE; 90 } 91 92 size_t 93 FatFile::read(void *buf, size_t bytes, off_t ofs) 94 { 95 unsigned long readed; 96 97 if (ofs != -1) 98 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 99 ReadFile(_handle, buf, bytes, &readed, 0); 100 101 return size_t(readed); 102 } 103 104 size_t 105 FatFile::write(const void *buf, size_t bytes, off_t ofs) 106 { 107 unsigned long wrote; 108 109 if (ofs != -1) 110 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 111 WriteFile(_handle, buf, bytes, &wrote, 0); 112 113 return size_t(wrote); 114 } 115 116 BOOL 117 FatFile::seek(off_t ofs) 118 { 119 120 SetFilePointer(_handle, ofs, 0, FILE_BEGIN); 121 122 return TRUE; 123 } 124