3503 lines
113 KiB
C++
3503 lines
113 KiB
C++
/*
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* CiderPress
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* Copyright (C) 2009 by CiderPress authors. All Rights Reserved.
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* Copyright (C) 2007 by faddenSoft, LLC. All Rights Reserved.
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* See the file LICENSE for distribution terms.
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*/
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/*
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* Implementation of the DiskImg class.
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*/
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#include "StdAfx.h"
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#include "DiskImgPriv.h"
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#include "TwoImg.h"
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/*
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* ===========================================================================
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* DiskImg
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* ===========================================================================
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*/
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/*
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* Standard NibbleDescr profiles.
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*
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* These will be tried in the order in which they appear here.
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*
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* IMPORTANT: if you add or remove an entry, update the StdNibbleDescr enum
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* in DiskImg.h.
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*
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* Formats that allow the data checksum to be ignored should NOT be written.
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* It's possible that the DOS on the disk is ignoring the checksums, but
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* it's more likely that they're using a non-standard seed, and the newly-
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* written sectors will have the wrong checksum value.
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*
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* Non-standard headers are usually okay, because we don't rewrite the
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* headers, just the sector contents.
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*/
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/*static*/ const DiskImg::NibbleDescr DiskImg::kStdNibbleDescrs[] = {
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{
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"DOS 3.3 Standard",
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16,
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{ 0xd5, 0xaa, 0x96 }, { 0xde, 0xaa, 0xeb },
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0x00, // checksum seed
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true, // verify checksum
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true, // verify track
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2, // epilog verify count
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00, // checksum seed
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true, // verify checksum
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2, // epilog verify count
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kNibbleEnc62,
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kNibbleSpecialNone,
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},
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{
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"DOS 3.3 Patched",
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16,
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{ 0xd5, 0xaa, 0x96 }, { 0xde, 0xaa, 0xeb },
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0x00, // checksum seed
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false, // verify checksum
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false, // verify track
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0, // epilog verify count
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00, // checksum seed
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true, // verify checksum
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0, // epilog verify count
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kNibbleEnc62,
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kNibbleSpecialNone,
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},
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{
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"DOS 3.3 Ignore Checksum",
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16,
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{ 0xd5, 0xaa, 0x96 }, { 0xde, 0xaa, 0xeb },
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0x00, // checksum seed
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false, // verify checksum
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false, // verify track
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0, // epilog verify count
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00, // checksum seed
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false, // verify checksum
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0, // epilog verify count
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kNibbleEnc62,
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kNibbleSpecialNone,
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},
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{
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"DOS 3.2 Standard",
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13,
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{ 0xd5, 0xaa, 0xb5 }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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true,
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2,
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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2,
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kNibbleEnc53,
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kNibbleSpecialNone,
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},
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{
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"DOS 3.2 Patched",
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13,
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{ 0xd5, 0xaa, 0xb5 }, { 0xde, 0xaa, 0xeb },
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0x00,
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false,
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false,
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0,
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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0,
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kNibbleEnc53,
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kNibbleSpecialNone,
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},
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{
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"Muse DOS 3.2", // standard DOS 3.2 with doubled sectors
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13,
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{ 0xd5, 0xaa, 0xb5 }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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true,
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2,
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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2,
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kNibbleEnc53,
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kNibbleSpecialMuse,
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},
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{
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"RDOS 3.3", // SSI 16-sector RDOS, with altered headers
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16,
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{ 0xd4, 0xaa, 0x96 }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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true,
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0, // epilog verify count
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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2,
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kNibbleEnc62,
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kNibbleSpecialSkipFirstAddrByte,
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/* odd tracks use d4aa96, even tracks use d5aa96 */
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},
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{
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"RDOS 3.2", // SSI 13-sector RDOS, with altered headers
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13,
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{ 0xd4, 0xaa, 0xb7 }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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true,
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2,
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{ 0xd5, 0xaa, 0xad }, { 0xde, 0xaa, 0xeb },
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0x00,
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true,
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2,
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kNibbleEnc53,
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kNibbleSpecialNone,
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},
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{
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"Custom", // reserve space for empty slot
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0,
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},
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};
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/*static*/ const DiskImg::NibbleDescr*
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DiskImg::GetStdNibbleDescr(StdNibbleDescr idx)
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{
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if ((int)idx < 0 || (int)idx >= (int) NELEM(kStdNibbleDescrs))
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return NULL;
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return &kStdNibbleDescrs[(int)idx];
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}
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/*
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* Initialize the members during construction.
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*/
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DiskImg::DiskImg(void)
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{
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assert(Global::GetAppInitCalled());
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fOuterFormat = kOuterFormatUnknown;
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fFileFormat = kFileFormatUnknown;
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fPhysical = kPhysicalFormatUnknown;
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fpNibbleDescr = NULL;
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fOrder = kSectorOrderUnknown;
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fFormat = kFormatUnknown;
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fFileSysOrder = kSectorOrderUnknown;
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fSectorPairing = false;
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fSectorPairOffset = -1;
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fpOuterGFD = NULL;
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fpWrapperGFD = NULL;
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fpDataGFD = NULL;
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fpOuterWrapper = NULL;
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fpImageWrapper = NULL;
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fpParentImg = NULL;
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fDOSVolumeNum = kVolumeNumNotSet;
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fOuterLength = -1;
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fWrappedLength = -1;
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fLength = -1;
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fExpandable = false;
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fReadOnly = true;
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fDirty = false;
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fHasSectors = false;
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fHasBlocks = false;
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fHasNibbles = false;
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fNumTracks = -1;
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fNumSectPerTrack = -1;
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fNumBlocks = -1;
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fpScanProgressCallback = NULL;
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fScanProgressCookie = NULL;
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fScanCount = 0;
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fScanMsg[0] = '\0';
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fScanLastMsgWhen = 0;
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/*
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* Create a working copy of the nibble descr table. We want to leave
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* open the possibility of applications editing or discarding entries,
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* so we work off of a copy.
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*
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* Ideally we'd allow these to be set per-track, so that certain odd
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* formats could be handled transparently (e.g. Muse tweaked DOS 3.2)
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* for formatting as well as reading.
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*/
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assert(kStdNibbleDescrs[kNibbleDescrCustom].numSectors == 0);
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assert(kNibbleDescrCustom == NELEM(kStdNibbleDescrs)-1);
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fpNibbleDescrTable = new NibbleDescr[NELEM(kStdNibbleDescrs)];
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fNumNibbleDescrEntries = NELEM(kStdNibbleDescrs);
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memcpy(fpNibbleDescrTable, kStdNibbleDescrs, sizeof(kStdNibbleDescrs));
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fNibbleTrackBuf = NULL;
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fNibbleTrackLoaded = -1;
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fNuFXCompressType = kNuThreadFormatLZW2;
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fNotes = NULL;
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fpBadBlockMap = NULL;
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fDiskFSRefCnt = 0;
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}
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/*
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* Throw away local storage.
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*/
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DiskImg::~DiskImg(void)
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{
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if (fpDataGFD != NULL) {
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LOGI("~DiskImg closing GenericFD(s)");
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}
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(void) CloseImage();
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delete[] fpNibbleDescrTable;
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delete[] fNibbleTrackBuf;
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delete[] fNotes;
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delete fpBadBlockMap;
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/* normally these will be closed, but perhaps not if something failed */
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if (fpOuterGFD != NULL)
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delete fpOuterGFD;
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if (fpWrapperGFD != NULL)
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delete fpWrapperGFD;
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if (fpDataGFD != NULL)
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delete fpDataGFD;
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if (fpOuterWrapper != NULL)
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delete fpOuterWrapper;
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if (fpImageWrapper != NULL)
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delete fpImageWrapper;
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fDiskFSRefCnt = 100; // flag as freed
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}
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/*
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* Set the nibble descr pointer.
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*/
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void DiskImg::SetNibbleDescr(int idx)
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{
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assert(idx >= 0 && idx < kNibbleDescrMAX);
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fpNibbleDescr = &fpNibbleDescrTable[idx];
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}
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/*
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* Set up a custom nibble descriptor.
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*/
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void DiskImg::SetCustomNibbleDescr(const NibbleDescr* pDescr)
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{
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if (pDescr == NULL) {
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fpNibbleDescr = NULL;
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} else {
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assert(fpNibbleDescrTable != NULL);
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//LOGI("Overwriting entry %d with new value (special=%d)",
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// kNibbleDescrCustom, pDescr->special);
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fpNibbleDescrTable[kNibbleDescrCustom] = *pDescr;
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fpNibbleDescr = &fpNibbleDescrTable[kNibbleDescrCustom];
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}
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}
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const char* A2File::GetRawFileName(size_t* size) const { // get unmodified file name
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if (size) {
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*size = strlen(GetFileName());
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}
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return GetFileName();
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}
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/*
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* Open a volume or a file on disk.
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*
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* For Windows, we need to handle logical/physical volumes specially. If
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* the filename matches the appropriate pattern, use a different GFD.
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*/
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DIError DiskImg::OpenImage(const char* pathName, char fssep, bool readOnly)
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{
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DIError dierr = kDIErrNone;
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bool isWinDevice = false;
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if (fpDataGFD != NULL) {
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LOGI(" DI already open!");
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return kDIErrAlreadyOpen;
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}
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LOGI(" DI OpenImage '%s' '%.1s' ro=%d", pathName, &fssep, readOnly);
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fReadOnly = readOnly;
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#ifdef _WIN32
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if ((fssep == '\0' || fssep == '\\') &&
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pathName[0] >= 'A' && pathName[0] <= 'Z' &&
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pathName[1] == ':' && pathName[2] == '\\' &&
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pathName[3] == '\0')
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{
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isWinDevice = true; // logical volume ("A:\")
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}
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if ((fssep == '\0' || fssep == '\\') &&
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isdigit(pathName[0]) && isdigit(pathName[1]) &&
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pathName[2] == ':' && pathName[3] == '\\' &&
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pathName[4] == '\0')
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{
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isWinDevice = true; // physical volume ("80:\")
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}
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if ((fssep == '\0' || fssep == '\\') &&
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strncmp(pathName, kASPIDev, strlen(kASPIDev)) == 0 &&
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pathName[strlen(pathName)-1] == '\\')
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{
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isWinDevice = true; // ASPI volume ("ASPI:x:y:z\")
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}
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#endif
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if (isWinDevice) {
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#ifdef _WIN32
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GFDWinVolume* pGFDWinVolume = new GFDWinVolume;
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dierr = pGFDWinVolume->Open(pathName, fReadOnly);
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if (dierr != kDIErrNone) {
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delete pGFDWinVolume;
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goto bail;
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}
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fpWrapperGFD = pGFDWinVolume;
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// Use a unique extension to skip some of the probing.
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dierr = AnalyzeImageFile("CPDevice.cp-win-vol", '\0');
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if (dierr != kDIErrNone)
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goto bail;
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#endif
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} else {
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GFDFile* pGFDFile = new GFDFile;
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dierr = pGFDFile->Open(pathName, fReadOnly);
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if (dierr != kDIErrNone) {
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delete pGFDFile;
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goto bail;
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}
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//fImageFileName = new char[strlen(pathName) + 1];
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//strcpy(fImageFileName, pathName);
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fpWrapperGFD = pGFDFile;
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pGFDFile = NULL;
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dierr = AnalyzeImageFile(pathName, fssep);
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if (dierr != kDIErrNone)
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goto bail;
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}
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assert(fpDataGFD != NULL);
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bail:
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return dierr;
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}
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DIError DiskImg::OpenImageFromBufferRO(const uint8_t* buffer, long length) {
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return OpenImageFromBuffer(const_cast<uint8_t*>(buffer), length, true);
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}
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DIError DiskImg::OpenImageFromBufferRW(uint8_t* buffer, long length) {
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return OpenImageFromBuffer(buffer, length, false);
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}
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/*
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* Open from a buffer, which could point to unadorned ready-to-go content
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* or to a preloaded image file.
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*/
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DIError DiskImg::OpenImageFromBuffer(uint8_t* buffer, long length, bool readOnly)
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{
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if (fpDataGFD != NULL) {
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LOGW(" DI already open!");
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return kDIErrAlreadyOpen;
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}
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LOGI(" DI OpenImage %08lx %ld ro=%d", (long) buffer, length, readOnly);
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DIError dierr;
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GFDBuffer* pGFDBuffer;
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fReadOnly = readOnly;
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pGFDBuffer = new GFDBuffer;
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dierr = pGFDBuffer->Open(buffer, length, false, false, readOnly);
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if (dierr != kDIErrNone) {
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delete pGFDBuffer;
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return dierr;
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}
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fpWrapperGFD = pGFDBuffer;
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pGFDBuffer = NULL;
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dierr = AnalyzeImageFile("", '\0');
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if (dierr != kDIErrNone)
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return dierr;
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assert(fpDataGFD != NULL);
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return kDIErrNone;
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}
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/*
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* Open a range of blocks from an already-open disk image. This is only
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* useful for things like UNIDOS volumes, which don't have an associated
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* file in the image and are linear.
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*
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* The "read only" flag is inherited from the parent.
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*
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* For embedded images with visible file structure, we should be using
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* an EmbeddedFD instead. [Note these were never implemented.]
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*
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* NOTE: there is an implicit ProDOS block ordering imposed on the parent
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* image. It turns out that all of our current embedded parents use
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* ProDOS-ordered blocks, so it works out okay, but the "linear" requirement
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* above goes beyond just having contiguous blocks.
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*/
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DIError DiskImg::OpenImage(DiskImg* pParent, long firstBlock, long numBlocks)
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{
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LOGI(" DI OpenImage parent=0x%08lx %ld %ld", (long) pParent, firstBlock,
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numBlocks);
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if (fpDataGFD != NULL) {
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LOGI(" DW already open!");
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return kDIErrAlreadyOpen;
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}
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if (pParent == NULL || firstBlock < 0 || numBlocks <= 0 ||
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firstBlock + numBlocks > pParent->GetNumBlocks())
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{
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assert(false);
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return kDIErrInvalidArg;
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}
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fReadOnly = pParent->GetReadOnly(); // very important
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DIError dierr;
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GFDGFD* pGFDGFD;
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pGFDGFD = new GFDGFD;
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dierr = pGFDGFD->Open(pParent->fpDataGFD, firstBlock * kBlockSize, fReadOnly);
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if (dierr != kDIErrNone) {
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delete pGFDGFD;
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return dierr;
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}
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fpDataGFD = pGFDGFD;
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assert(fpWrapperGFD == NULL);
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|
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/*
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* This replaces the call to "analyze image file" because we know we
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* already have an open file with specific characteristics.
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*/
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//fOffset = pParent->fOffset + kBlockSize * firstBlock;
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fLength = (di_off_t)numBlocks * kBlockSize;
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fOuterLength = fWrappedLength = fLength;
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fFileFormat = kFileFormatUnadorned;
|
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fPhysical = pParent->fPhysical;
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fOrder = pParent->fOrder;
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|
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fpParentImg = pParent;
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return dierr;
|
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}
|
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|
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DIError DiskImg::OpenImage(DiskImg* pParent, long firstTrack, long firstSector,
|
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long numSectors)
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{
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LOGI(" DI OpenImage parent=0x%08lx %ld %ld %ld", (long) pParent,
|
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firstTrack, firstSector, numSectors);
|
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if (fpDataGFD != NULL) {
|
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LOGW(" DI already open!");
|
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return kDIErrAlreadyOpen;
|
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}
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|
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if (pParent == NULL)
|
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return kDIErrInvalidArg;
|
|
|
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int prntSectPerTrack = pParent->GetNumSectPerTrack();
|
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int lastTrack = firstTrack +
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(numSectors + prntSectPerTrack-1) / prntSectPerTrack;
|
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if (firstTrack < 0 || numSectors <= 0 ||
|
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lastTrack > pParent->GetNumTracks())
|
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{
|
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return kDIErrInvalidArg;
|
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}
|
|
|
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fReadOnly = pParent->GetReadOnly(); // very important
|
|
|
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DIError dierr;
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GFDGFD* pGFDGFD;
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|
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pGFDGFD = new GFDGFD;
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dierr = pGFDGFD->Open(pParent->fpDataGFD,
|
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kSectorSize * firstTrack * prntSectPerTrack, fReadOnly);
|
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if (dierr != kDIErrNone) {
|
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delete pGFDGFD;
|
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return dierr;
|
|
}
|
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|
|
fpDataGFD = pGFDGFD;
|
|
assert(fpWrapperGFD == NULL);
|
|
|
|
/*
|
|
* This replaces the call to "analyze image file" because we know we
|
|
* already have an open file with specific characteristics.
|
|
*/
|
|
assert(firstSector == 0); // else fOffset calculation breaks
|
|
//fOffset = pParent->fOffset + kSectorSize * firstTrack * prntSectPerTrack;
|
|
fLength = numSectors * kSectorSize;
|
|
fOuterLength = fWrappedLength = fLength;
|
|
fFileFormat = kFileFormatUnadorned;
|
|
fPhysical = pParent->fPhysical;
|
|
fOrder = pParent->fOrder;
|
|
|
|
fpParentImg = pParent;
|
|
|
|
return dierr;
|
|
}
|
|
|
|
|
|
/*
|
|
* Enable sector pairing. Useful for OzDOS.
|
|
*/
|
|
void DiskImg::SetPairedSectors(bool enable, int idx)
|
|
{
|
|
fSectorPairing = enable;
|
|
fSectorPairOffset = idx;
|
|
|
|
if (enable) {
|
|
assert(idx == 0 || idx == 1);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Close the image, freeing resources.
|
|
*
|
|
* If we write to a child DiskImg, it's responsible for setting the "dirty"
|
|
* flag in its parent (and so on up the chain). That's necessary so that,
|
|
* when we close the file, changes made to a child DiskImg cause the parent
|
|
* to do any necessary recompression.
|
|
*
|
|
* [ This is getting called even when image creation failed with an error.
|
|
* This is probably the correct behavior, but we may want to be aborting the
|
|
* image creation instead of completing it. That's a higher-level decision
|
|
* though. ++ATM 20040506 ]
|
|
*/
|
|
DIError DiskImg::CloseImage(void)
|
|
{
|
|
DIError dierr;
|
|
|
|
LOGI("CloseImage 0x%p", this);
|
|
|
|
/* check for DiskFS objects that still point to us */
|
|
if (fDiskFSRefCnt != 0) {
|
|
LOGE("ERROR: CloseImage: fDiskFSRefCnt=%d", fDiskFSRefCnt);
|
|
assert(false); //DebugBreak();
|
|
}
|
|
|
|
/*
|
|
* Flush any changes.
|
|
*/
|
|
dierr = FlushImage(kFlushAll);
|
|
if (dierr != kDIErrNone)
|
|
return dierr;
|
|
|
|
/*
|
|
* Clean up. Close GFD, OrigGFD, and OuterGFD. Delete ImageWrapper
|
|
* and OuterWrapper.
|
|
*
|
|
* In some cases we will have the file open more than once (e.g. a
|
|
* NuFX archive, which must be opened on disk).
|
|
*/
|
|
if (fpDataGFD != NULL) {
|
|
fpDataGFD->Close();
|
|
delete fpDataGFD;
|
|
fpDataGFD = NULL;
|
|
}
|
|
if (fpWrapperGFD != NULL) {
|
|
fpWrapperGFD->Close();
|
|
delete fpWrapperGFD;
|
|
fpWrapperGFD = NULL;
|
|
}
|
|
if (fpOuterGFD != NULL) {
|
|
fpOuterGFD->Close();
|
|
delete fpOuterGFD;
|
|
fpOuterGFD = NULL;
|
|
}
|
|
delete fpImageWrapper;
|
|
fpImageWrapper = NULL;
|
|
delete fpOuterWrapper;
|
|
fpOuterWrapper = NULL;
|
|
|
|
return dierr;
|
|
}
|
|
|
|
|
|
/*
|
|
* Flush data to disk.
|
|
*
|
|
* The only time this really needs to do anything on a disk image file is
|
|
* when we have compressed data (NuFX, DDD, .gz, .zip). The uncompressed
|
|
* wrappers either don't do anything ("unadorned") or just update some
|
|
* header fields (DiskCopy42).
|
|
*
|
|
* If "mode" is kFlushFastOnly, we only flush the formats that don't really
|
|
* need flushing. This is part of a scheme to keep the disk contents in a
|
|
* reasonable state on the off chance we crash with a modified file open.
|
|
* It also helps the user understand when changes are being made immediately
|
|
* vs. when they're written to memory and compressed later. We could just
|
|
* refuse to raise the "dirty" flag when modifying "simple" file formats,
|
|
* but that would change the meaning of the flag from "something has been
|
|
* changed" to "what's in the file and what's in memory differ". I want it
|
|
* to be a "dirty" flag.
|
|
*/
|
|
DIError DiskImg::FlushImage(FlushMode mode)
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
|
|
LOGI(" DI FlushImage (dirty=%d mode=%d)", fDirty, mode);
|
|
if (!fDirty)
|
|
return kDIErrNone;
|
|
if (fpDataGFD == NULL) {
|
|
/*
|
|
* This can happen if we tried to create a disk image but failed, e.g.
|
|
* couldn't create the output file because of access denied on the
|
|
* directory. There's no data, therefore nothing to flush, but the
|
|
* "dirty" flag is set because CreateImageCommon sets it almost
|
|
* immediately.
|
|
*/
|
|
LOGI(" (disk must've failed during creation)");
|
|
fDirty = false;
|
|
return kDIErrNone;
|
|
}
|
|
|
|
if (mode == kFlushFastOnly &&
|
|
((fpImageWrapper != NULL && !fpImageWrapper->HasFastFlush()) ||
|
|
(fpOuterWrapper != NULL && !fpOuterWrapper->HasFastFlush()) ))
|
|
{
|
|
LOGI("DI fast flush requested, but one or both wrappers are slow");
|
|
return kDIErrNone;
|
|
}
|
|
|
|
/*
|
|
* Step 1: make sure any local caches have been flushed.
|
|
*/
|
|
/* (none) */
|
|
|
|
/*
|
|
* Step 2: push changes from fpDataGFD to fpWrapperGFD. This will
|
|
* cause ImageWrapper to rebuild itself (SHK, DDD, whatever). In
|
|
* some cases this amounts to copying the data on top of itself,
|
|
* which we can avoid easily.
|
|
*
|
|
* Embedded volumes don't have wrappers; when you write to an
|
|
* embedded volume, it passes straight through to the parent.
|
|
*
|
|
* (Note to self: formats like NuFX that write to a temp file and then
|
|
* rename over the old will close fpWrapperGFD and just access it
|
|
* directly. This is bad, because it doesn't allow them to have an
|
|
* "outer" format, but it's the way life is. The point is that it's
|
|
* okay for fpWrapperGFD to be non-NULL but represent a closed file,
|
|
* so long as the "Flush" function has it figured out.)
|
|
*/
|
|
if (fpWrapperGFD != NULL) {
|
|
LOGI(" DI flushing data changes to wrapper (fLen=%ld fWrapLen=%ld)",
|
|
(long) fLength, (long) fWrappedLength);
|
|
dierr = fpImageWrapper->Flush(fpWrapperGFD, fpDataGFD, fLength,
|
|
&fWrappedLength);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" ERROR: wrapper flush failed (err=%d)", dierr);
|
|
return dierr;
|
|
}
|
|
/* flush the GFD in case it's a Win32 volume with block caching */
|
|
dierr = fpWrapperGFD->Flush();
|
|
} else {
|
|
assert(fpParentImg != NULL);
|
|
}
|
|
|
|
/*
|
|
* Step 3: if we have an fpOuterGFD, rebuild the file with the data
|
|
* in fpWrapperGFD.
|
|
*/
|
|
if (fpOuterWrapper != NULL) {
|
|
LOGI(" DI saving wrapper to outer, fWrapLen=%ld",
|
|
(long) fWrappedLength);
|
|
assert(fpOuterGFD != NULL);
|
|
dierr = fpOuterWrapper->Save(fpOuterGFD, fpWrapperGFD,
|
|
fWrappedLength);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" ERROR: outer save failed (err=%d)", dierr);
|
|
return dierr;
|
|
}
|
|
}
|
|
|
|
fDirty = false;
|
|
return kDIErrNone;
|
|
}
|
|
|
|
|
|
/*
|
|
* Given the filename extension and a GFD, figure out what's inside.
|
|
*
|
|
* The filename extension should give us some idea what to expect:
|
|
* SHK, SDK, BXY - ShrinkIt compressed disk image
|
|
* GZ - gzip-compressed file (with something else inside)
|
|
* ZIP - ZIP archive with a single disk image inside
|
|
* DDD - DDD, DDD Pro, or DDD5.0 compressed image
|
|
* DSK - DiskCopy 4.2 or DO/PO
|
|
* DC - DiskCopy 4.2 (or 6?)
|
|
* DC6 - DiskCopy 6 (usually just raw sectors)
|
|
* DO, PO, D13, RAW? - DOS-order or ProDOS-order uncompressed
|
|
* IMG - Copy ][+ image (unadorned, physical sector order)
|
|
* HDV - virtual hard drive image
|
|
* NIB, RAW? - nibblized image
|
|
* (no extension) uncompressed
|
|
* cp-win-vol - our "magic" extension to indicate a Windows logical volume
|
|
*
|
|
* We can also examine the file length to see if it's a standard size
|
|
* (140K, 800K) and look for magic values in the header.
|
|
*
|
|
* If we can access the contents directly from disk, we do so. It's
|
|
* possibly more efficient to load the whole thing into memory, but if
|
|
* we have that much memory then the OS should cache it for us. (I have
|
|
* some 20MB disk images from my hard drive that shouldn't be loaded
|
|
* in their entirety. Certainly don't want to load a 512MB CFFA image.)
|
|
*
|
|
* On input, the following fields must be set:
|
|
* fpWrapperGFD - GenericFD for the file pointed to by "pathname" (or for a
|
|
* memory buffer if this is a sub-volume)
|
|
*
|
|
* On success, the following fields will be set:
|
|
* fWrappedLength, fOuterLength - set appropriately
|
|
* fpDataGFD - GFD for the raw data, possibly just a GFDGFD with an offset
|
|
* fLength - length of unadorned data in the file, or the length of
|
|
* data stored in fBuffer (test for fBuffer!=NULL)
|
|
* fFileFormat - set to the overall file format, mostly interesting
|
|
* for identification of the file "wrapper"
|
|
* fPhysicalFormat - set to the type of data this holds
|
|
* (maybe) fOrder - set when the file format or extension dictates, e.g.
|
|
* 2MG or *.po; not always reliable
|
|
* (maybe) fDOSVolumeNum - set to DOS volume number from wrapper
|
|
*
|
|
* This may set fReadOnly if one of the wrappers looks okay but is reporting
|
|
* a bad checksum.
|
|
*/
|
|
DIError DiskImg::AnalyzeImageFile(const char* pathName, char fssep)
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
FileFormat probableFormat;
|
|
bool reliableExt;
|
|
const char* ext = FindExtension(pathName, fssep);
|
|
char* extBuf = NULL; // uses malloc/free
|
|
bool needExtFromOuter = false;
|
|
|
|
if (ext != NULL) {
|
|
assert(*ext == '.');
|
|
ext++;
|
|
} else
|
|
ext = "";
|
|
|
|
LOGI(" DI AnalyzeImageFile '%s' '%c' ext='%s'",
|
|
pathName, fssep, ext);
|
|
|
|
/* sanity check: nobody should have configured these yet */
|
|
assert(fOuterFormat == kOuterFormatUnknown);
|
|
assert(fFileFormat == kFileFormatUnknown);
|
|
assert(fOrder == kSectorOrderUnknown);
|
|
assert(fFormat == kFormatUnknown);
|
|
fLength = -1;
|
|
dierr = fpWrapperGFD->Seek(0, kSeekEnd);
|
|
if (dierr != kDIErrNone) {
|
|
LOGW(" DI Couldn't seek to end of wrapperGFD");
|
|
goto bail;
|
|
}
|
|
fWrappedLength = fOuterLength = fpWrapperGFD->Tell();
|
|
|
|
/* quick test for zero-length files */
|
|
if (fWrappedLength == 0)
|
|
return kDIErrUnrecognizedFileFmt;
|
|
|
|
/*
|
|
* Start by checking for a zip/gzip "wrapper wrapper". We want to strip
|
|
* that away before we do anything else. Because web sites tend to
|
|
* gzip everything in sight whether it needs it or not, we treat this
|
|
* as a special case and assume that anything could be inside.
|
|
*
|
|
* Some cases are difficult to handle, e.g. ".SDK", since NufxLib
|
|
* doesn't let us open an archive that is sitting in memory.
|
|
*
|
|
* We could also handle disk images stored as ordinary files stored
|
|
* inside SHK. Not much point in handling multiple files down at
|
|
* this level though.
|
|
*/
|
|
if (strcasecmp(ext, "gz") == 0 &&
|
|
OuterGzip::Test(fpWrapperGFD, fOuterLength) == kDIErrNone)
|
|
{
|
|
LOGI(" DI found gz outer wrapper");
|
|
|
|
fpOuterWrapper = new OuterGzip();
|
|
if (fpOuterWrapper == NULL) {
|
|
dierr = kDIErrMalloc;
|
|
goto bail;
|
|
}
|
|
fOuterFormat = kOuterFormatGzip;
|
|
|
|
/* drop the ".gz" and get down to the next extension */
|
|
ext = "";
|
|
extBuf = strdup(pathName);
|
|
if (extBuf != NULL) {
|
|
char* localExt;
|
|
|
|
localExt = (char*) FindExtension(extBuf, fssep);
|
|
if (localExt != NULL)
|
|
*localExt = '\0';
|
|
localExt = (char*) FindExtension(extBuf, fssep);
|
|
if (localExt != NULL) {
|
|
ext = localExt;
|
|
assert(*ext == '.');
|
|
ext++;
|
|
}
|
|
}
|
|
LOGI(" DI after gz, ext='%s'", ext == NULL ? "(NULL)" : ext);
|
|
|
|
} else if (strcasecmp(ext, "zip") == 0) {
|
|
dierr = OuterZip::Test(fpWrapperGFD, fOuterLength);
|
|
if (dierr != kDIErrNone)
|
|
goto bail;
|
|
|
|
LOGI(" DI found ZIP outer wrapper");
|
|
|
|
fpOuterWrapper = new OuterZip();
|
|
if (fpOuterWrapper == NULL) {
|
|
dierr = kDIErrMalloc;
|
|
goto bail;
|
|
}
|
|
fOuterFormat = kOuterFormatZip;
|
|
|
|
needExtFromOuter = true;
|
|
|
|
} else {
|
|
fOuterFormat = kOuterFormatNone;
|
|
}
|
|
|
|
/* finish up outer wrapper stuff */
|
|
if (fOuterFormat != kOuterFormatNone) {
|
|
GenericFD* pNewGFD = NULL;
|
|
dierr = fpOuterWrapper->Load(fpWrapperGFD, fOuterLength, fReadOnly,
|
|
&fWrappedLength, &pNewGFD);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" DW outer prep failed");
|
|
/* extensions are "reliable", so failure is unavoidable */
|
|
goto bail;
|
|
}
|
|
|
|
/* Load() sets this */
|
|
if (fpOuterWrapper->IsDamaged()) {
|
|
AddNote(kNoteWarning, "The zip/gzip wrapper appears to be damaged.");
|
|
fReadOnly = true;
|
|
}
|
|
|
|
/* shift GFDs */
|
|
fpOuterGFD = fpWrapperGFD;
|
|
fpWrapperGFD = pNewGFD;
|
|
|
|
if (needExtFromOuter) {
|
|
ext = fpOuterWrapper->GetExtension();
|
|
if (ext == NULL)
|
|
ext = "";
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Try to figure out what format the file is in.
|
|
*
|
|
* First pass, try only what the filename says it is. This way, if
|
|
* two file formats look alike, we have a good chance of getting it
|
|
* right.
|
|
*
|
|
* The "Test" functions have the complete file at their disposal. The
|
|
* file's length is stored in "fWrappedLength" for convenience.
|
|
*/
|
|
reliableExt = false;
|
|
probableFormat = kFileFormatUnknown;
|
|
if (strcasecmp(ext, "2mg") == 0 || strcasecmp(ext, "2img") == 0) {
|
|
reliableExt = true;
|
|
if (Wrapper2MG::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
probableFormat = kFileFormat2MG;
|
|
} else if (strcasecmp(ext, "shk") == 0 || strcasecmp(ext, "sdk") == 0 ||
|
|
strcasecmp(ext, "bxy") == 0)
|
|
{
|
|
DIError dierr2;
|
|
reliableExt = true;
|
|
dierr2 = WrapperNuFX::Test(fpWrapperGFD, fWrappedLength);
|
|
if (dierr2 == kDIErrNone)
|
|
probableFormat = kFileFormatNuFX;
|
|
else if (dierr2 == kDIErrFileArchive) {
|
|
LOGI(" AnalyzeImageFile thinks it found a NuFX file archive");
|
|
dierr = dierr2;
|
|
goto bail;
|
|
}
|
|
} else if (strcasecmp(ext, "hdv") == 0) {
|
|
/* usually just a "raw" disk, but check for Sim //e */
|
|
if (WrapperSim2eHDV::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
probableFormat = kFileFormatSim2eHDV;
|
|
|
|
/* ProDOS .hdv volumes can expand */
|
|
fExpandable = true;
|
|
} else if (strcasecmp(ext, "dsk") == 0 || strcasecmp(ext, "dc") == 0) {
|
|
/* might be DiskCopy */
|
|
if (WrapperDiskCopy42::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
probableFormat = kFileFormatDiskCopy42;
|
|
} else if (strcasecmp(ext, "ddd") == 0) {
|
|
/* do this after compressed formats but before unadorned */
|
|
reliableExt = true;
|
|
if (WrapperDDD::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
probableFormat = kFileFormatDDD;
|
|
} else if (strcasecmp(ext, "app") == 0) {
|
|
reliableExt = true;
|
|
if (WrapperTrackStar::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
probableFormat = kFileFormatTrackStar;
|
|
} else if (strcasecmp(ext, "fdi") == 0) {
|
|
reliableExt = true;
|
|
if (WrapperFDI::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
probableFormat = kFileFormatFDI;
|
|
} else if (strcasecmp(ext, "img") == 0) {
|
|
if (WrapperUnadornedSector::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
{
|
|
probableFormat = kFileFormatUnadorned;
|
|
fPhysical = kPhysicalFormatSectors;
|
|
fOrder = kSectorOrderPhysical;
|
|
}
|
|
} else if (strcasecmp(ext, "nib") == 0 || strcasecmp(ext, "raw") == 0) {
|
|
if (WrapperUnadornedNibble::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
{
|
|
probableFormat = kFileFormatUnadorned;
|
|
fPhysical = kPhysicalFormatNib525_6656;
|
|
/* figure out NibbleFormat later */
|
|
}
|
|
} else if (strcasecmp(ext, "do") == 0 || strcasecmp(ext, "po") == 0 ||
|
|
strcasecmp(ext, "d13") == 0 || strcasecmp(ext, "dc6") == 0)
|
|
{
|
|
if (WrapperUnadornedSector::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
{
|
|
probableFormat = kFileFormatUnadorned;
|
|
fPhysical = kPhysicalFormatSectors;
|
|
if (strcasecmp(ext, "do") == 0 || strcasecmp(ext, "d13") == 0)
|
|
fOrder = kSectorOrderDOS;
|
|
else
|
|
fOrder = kSectorOrderProDOS; // po, dc6
|
|
LOGI(" DI guessing order is %d by extension", fOrder);
|
|
}
|
|
} else if (strcasecmp(ext, "cp-win-vol") == 0) {
|
|
/* this is a Windows logical volume */
|
|
reliableExt = true;
|
|
probableFormat = kFileFormatUnadorned;
|
|
fPhysical = kPhysicalFormatSectors;
|
|
fOrder = kSectorOrderProDOS;
|
|
} else {
|
|
/* no match on the filename extension; start guessing */
|
|
}
|
|
|
|
if (probableFormat != kFileFormatUnknown) {
|
|
/*
|
|
* Found a match. Use "probableFormat" to open the file.
|
|
*/
|
|
LOGI(" DI scored hit on extension '%s'", ext);
|
|
} else {
|
|
/*
|
|
* Didn't work. If the file extension was marked "reliable", then
|
|
* either we have the wrong extension on the file, or the contents
|
|
* are damaged.
|
|
*
|
|
* If the extension isn't reliable, or simply absent, then we have
|
|
* to probe through the formats we know and just hope for the best.
|
|
*
|
|
* If the "test" function returns with a checksum failure, we take
|
|
* it to mean that the format was positively identified, but the
|
|
* data inside is corrupted. This results in an immediate return
|
|
* with the checksum failure noted. Only a few wrapper formats
|
|
* have checksums embedded. (The "test" functions should only
|
|
* be looking at header checksums.)
|
|
*/
|
|
if (reliableExt) {
|
|
LOGI(" DI file extension '%s' did not match contents", ext);
|
|
dierr = kDIErrBadFileFormat;
|
|
goto bail;
|
|
} else {
|
|
LOGI(" DI extension '%s' not useful, probing formats", ext);
|
|
dierr = WrapperNuFX::Test(fpWrapperGFD, fWrappedLength);
|
|
if (dierr == kDIErrNone) {
|
|
probableFormat = kFileFormatNuFX;
|
|
goto gotit;
|
|
} else if (dierr == kDIErrFileArchive)
|
|
goto bail; // we know it's NuFX, we know we can't use it
|
|
else if (dierr == kDIErrBadChecksum)
|
|
goto bail; // right file type, bad data
|
|
|
|
dierr = WrapperDiskCopy42::Test(fpWrapperGFD, fWrappedLength);
|
|
if (dierr == kDIErrNone) {
|
|
probableFormat = kFileFormatDiskCopy42;
|
|
goto gotit;
|
|
} else if (dierr == kDIErrBadChecksum)
|
|
goto bail; // right file type, bad data
|
|
|
|
if (Wrapper2MG::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone) {
|
|
probableFormat = kFileFormat2MG;
|
|
} else if (WrapperDDD::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone) {
|
|
probableFormat = kFileFormatDDD;
|
|
} else if (WrapperSim2eHDV::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
{
|
|
probableFormat = kFileFormatSim2eHDV;
|
|
} else if (WrapperTrackStar::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
{
|
|
probableFormat = kFileFormatTrackStar;
|
|
} else if (WrapperFDI::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone)
|
|
{
|
|
probableFormat = kFileFormatFDI;
|
|
} else if (WrapperUnadornedNibble::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone) {
|
|
probableFormat = kFileFormatUnadorned;
|
|
fPhysical = kPhysicalFormatNib525_6656; // placeholder
|
|
} else if (WrapperUnadornedSector::Test(fpWrapperGFD, fWrappedLength) == kDIErrNone) {
|
|
probableFormat = kFileFormatUnadorned;
|
|
fPhysical = kPhysicalFormatSectors;
|
|
}
|
|
gotit: ;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Either we recognize it or we don't. Finish opening the file by
|
|
* setting up "fLength" and "fPhysical" values, extracting data
|
|
* into a memory buffer if necessary. fpDataGFD is set up by the
|
|
* "prep" function.
|
|
*
|
|
* If we're lucky, this will also configure "fOrder" for us, which is
|
|
* important when we can't recognize the filesystem format (for correct
|
|
* operation of disk tools).
|
|
*/
|
|
switch (probableFormat) {
|
|
case kFileFormat2MG:
|
|
fpImageWrapper = new Wrapper2MG();
|
|
break;
|
|
case kFileFormatDiskCopy42:
|
|
fpImageWrapper = new WrapperDiskCopy42();
|
|
break;
|
|
case kFileFormatSim2eHDV:
|
|
fpImageWrapper = new WrapperSim2eHDV();
|
|
break;
|
|
case kFileFormatTrackStar:
|
|
fpImageWrapper = new WrapperTrackStar();
|
|
break;
|
|
case kFileFormatFDI:
|
|
fpImageWrapper = new WrapperFDI();
|
|
fReadOnly = true; // writing to FDI not yet supported
|
|
break;
|
|
case kFileFormatNuFX:
|
|
fpImageWrapper = new WrapperNuFX();
|
|
((WrapperNuFX*)fpImageWrapper)->SetCompressType(
|
|
(NuThreadFormat) fNuFXCompressType);
|
|
break;
|
|
case kFileFormatDDD:
|
|
fpImageWrapper = new WrapperDDD();
|
|
break;
|
|
case kFileFormatUnadorned:
|
|
if (IsSectorFormat(fPhysical))
|
|
fpImageWrapper = new WrapperUnadornedSector();
|
|
else if (IsNibbleFormat(fPhysical))
|
|
fpImageWrapper = new WrapperUnadornedNibble();
|
|
else {
|
|
assert(false);
|
|
}
|
|
break;
|
|
default:
|
|
LOGI(" DI couldn't figure out the file format");
|
|
dierr = kDIErrUnrecognizedFileFmt;
|
|
break;
|
|
}
|
|
if (fpImageWrapper != NULL) {
|
|
assert(fpDataGFD == NULL);
|
|
dierr = fpImageWrapper->Prep(fpWrapperGFD, fWrappedLength, fReadOnly,
|
|
&fLength, &fPhysical, &fOrder, &fDOSVolumeNum,
|
|
&fpBadBlockMap, &fpDataGFD);
|
|
} else {
|
|
/* could be a mem alloc failure that didn't set dierr */
|
|
if (dierr == kDIErrNone)
|
|
dierr = kDIErrGeneric;
|
|
}
|
|
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" DI wrapper prep failed (err=%d)", dierr);
|
|
goto bail;
|
|
}
|
|
|
|
/* check for non-fatal checksum failures, e.g. DiskCopy42 */
|
|
if (fpImageWrapper->IsDamaged()) {
|
|
AddNote(kNoteWarning, "File checksum didn't match.");
|
|
fReadOnly = true;
|
|
}
|
|
|
|
fFileFormat = probableFormat;
|
|
|
|
assert(fLength >= 0);
|
|
assert(fpDataGFD != NULL);
|
|
assert(fOuterFormat != kOuterFormatUnknown);
|
|
assert(fFileFormat != kFileFormatUnknown);
|
|
assert(fPhysical != kPhysicalFormatUnknown);
|
|
|
|
bail:
|
|
free(extBuf);
|
|
return dierr;
|
|
}
|
|
|
|
|
|
/*
|
|
* Try to figure out what we're looking at.
|
|
*
|
|
* Returns an error if we don't think this is even a disk image. If we
|
|
* just can't figure it out, we return success but with the format value
|
|
* set to "unknown". This gives the caller a chance to use "override"
|
|
* to help us find our way.
|
|
*
|
|
* On entry:
|
|
* fpDataGFD, fLength, and fFileFormat are defined
|
|
* fSectorPairing is specified
|
|
* fOrder has a semi-reliable guess at sector ordering
|
|
* On exit:
|
|
* fOrder and fFormat are set to the best of our ability
|
|
* fNumTracks, fNumSectPerTrack, and fNumBlocks are set
|
|
* fHasSectors, fHasTracks, and fHasNibbles are set
|
|
* fFileSysOrder is set
|
|
* fpNibbleDescr will be set for nibble images
|
|
*/
|
|
DIError DiskImg::AnalyzeImage(void)
|
|
{
|
|
assert(fLength >= 0);
|
|
assert(fpDataGFD != NULL);
|
|
assert(fFileFormat != kFileFormatUnknown);
|
|
assert(fPhysical != kPhysicalFormatUnknown);
|
|
assert(fFormat == kFormatUnknown);
|
|
assert(fFileSysOrder == kSectorOrderUnknown);
|
|
assert(fNumTracks == -1);
|
|
assert(fNumSectPerTrack == -1);
|
|
assert(fNumBlocks == -1);
|
|
if (fpDataGFD == NULL)
|
|
return kDIErrInternal;
|
|
|
|
/*
|
|
* Figure out how many tracks and sectors the image has.
|
|
*
|
|
* For an odd-sized ProDOS image, there will be no tracks and sectors.
|
|
*/
|
|
if (IsSectorFormat(fPhysical)) {
|
|
if (!fLength) {
|
|
LOGI(" DI zero-length disk images not allowed");
|
|
return kDIErrOddLength;
|
|
}
|
|
|
|
if (fLength == kD13Length) {
|
|
/* 13-sector .d13 image */
|
|
fHasSectors = true;
|
|
fNumSectPerTrack = 13;
|
|
fNumTracks = kTrackCount525;
|
|
assert(!fHasBlocks);
|
|
} else if (fLength % (16 * kSectorSize) == 0) {
|
|
/* looks like a collection of 16-sector tracks */
|
|
fHasSectors = true;
|
|
|
|
fNumSectPerTrack = 16;
|
|
fNumTracks = (int) (fLength / (fNumSectPerTrack * kSectorSize));
|
|
|
|
/* sector pairing effectively cuts #of tracks in half */
|
|
if (fSectorPairing) {
|
|
if ((fNumTracks & 0x01) != 0) {
|
|
LOGI(" DI error: bad attempt at sector pairing");
|
|
assert(false);
|
|
fSectorPairing = false;
|
|
}
|
|
}
|
|
|
|
if (fSectorPairing)
|
|
fNumTracks /= 2;
|
|
} else {
|
|
if (fSectorPairing) {
|
|
LOGI("GLITCH: sector pairing enabled, but fLength=%ld",
|
|
(long) fLength);
|
|
return kDIErrOddLength;
|
|
}
|
|
|
|
assert(fNumTracks == -1);
|
|
assert(fNumSectPerTrack == -1);
|
|
assert((fLength % kBlockSize) == 0);
|
|
|
|
fHasBlocks = true;
|
|
fNumBlocks = (long) (fLength / kBlockSize);
|
|
}
|
|
} else if (IsNibbleFormat(fPhysical)) {
|
|
fHasNibbles = fHasSectors = true;
|
|
|
|
/*
|
|
* Figure out if it's 13-sector or 16-sector (or garbage). We
|
|
* have to make an assessment of the entire disk so we can declare
|
|
* it to be 13-sector or 16-sector, which is useful for DiskFS
|
|
* which will want to scan for DOS VTOCs and other goodies. We
|
|
* also want to provide a default NibbleDescr.
|
|
*
|
|
* Failing that, we still allow it to be opened for raw track access.
|
|
*
|
|
* This also sets fNumTracks, which could be more than 35 if we're
|
|
* working with a TrackStar or FDI image.
|
|
*/
|
|
DIError dierr;
|
|
dierr = AnalyzeNibbleData(); // sets nibbleDescr and DOS vol num
|
|
if (dierr == kDIErrNone) {
|
|
assert(fpNibbleDescr != NULL);
|
|
fNumSectPerTrack = fpNibbleDescr->numSectors;
|
|
fOrder = kSectorOrderPhysical;
|
|
|
|
if (!fReadOnly && !fpNibbleDescr->dataVerifyChecksum) {
|
|
LOGI("DI nibbleDescr does not verify data checksum, disabling writes");
|
|
AddNote(kNoteInfo,
|
|
"Sectors use non-standard data checksums; writing disabled.");
|
|
fReadOnly = true;
|
|
}
|
|
} else {
|
|
//assert(fpNibbleDescr == NULL);
|
|
fNumSectPerTrack = -1;
|
|
fOrder = kSectorOrderPhysical;
|
|
fHasSectors = false;
|
|
}
|
|
} else {
|
|
LOGI("Unsupported physical %d", fPhysical);
|
|
assert(false);
|
|
return kDIErrGeneric;
|
|
}
|
|
|
|
/*
|
|
* Compute the number of blocks. For a 13-sector disk, block access
|
|
* is not possible.
|
|
*
|
|
* For nibble formats, we have to base the block count on the number
|
|
* of sectors rather than the file length.
|
|
*/
|
|
if (fHasSectors) {
|
|
assert(fNumSectPerTrack > 0);
|
|
if ((fNumSectPerTrack & 0x01) == 0) {
|
|
/* not a 13-sector disk, so define blocks in terms of sectors */
|
|
/* (effects of sector pairing are already taken into account) */
|
|
fHasBlocks = true;
|
|
fNumBlocks = (fNumTracks * fNumSectPerTrack) / 2;
|
|
}
|
|
} else if (fHasBlocks) {
|
|
if ((fLength % kBlockSize) == 0) {
|
|
/* not sector-oriented, so define blocks based on length */
|
|
fHasBlocks = true;
|
|
fNumBlocks = (long) (fLength / kBlockSize);
|
|
|
|
if (fSectorPairing) {
|
|
if ((fNumBlocks & 0x01) != 0) {
|
|
LOGI(" DI error: bad attempt at sector pairing (blk)");
|
|
assert(false);
|
|
fSectorPairing = false;
|
|
} else
|
|
fNumBlocks /= 2;
|
|
}
|
|
|
|
} else {
|
|
assert(false);
|
|
return kDIErrGeneric;
|
|
}
|
|
} else if (fHasNibbles) {
|
|
assert(fNumBlocks == -1);
|
|
} else {
|
|
LOGI(" DI none of fHasSectors/fHasBlocks/fHasNibbles are set");
|
|
assert(false);
|
|
return kDIErrInternal;
|
|
}
|
|
|
|
/*
|
|
* We've got the track/sector/block layout sorted out; now figure out
|
|
* what kind of filesystem we're dealing with.
|
|
*/
|
|
AnalyzeImageFS();
|
|
|
|
LOGI(" DI AnalyzeImage tracks=%ld sectors=%d blocks=%ld fileSysOrder=%d",
|
|
fNumTracks, fNumSectPerTrack, fNumBlocks, fFileSysOrder);
|
|
LOGI(" hasBlocks=%d hasSectors=%d hasNibbles=%d",
|
|
fHasBlocks, fHasSectors, fHasNibbles);
|
|
|
|
return kDIErrNone;
|
|
}
|
|
|
|
/*
|
|
* Try to figure out what filesystem exists on this disk image.
|
|
*
|
|
* We want to test for DOS before ProDOS, because sometimes they overlap (e.g.
|
|
* 800K ProDOS disk with five 160K DOS volumes on it).
|
|
*
|
|
* Sets fFormat, fOrder, and fFileSysOrder.
|
|
*/
|
|
void DiskImg::AnalyzeImageFS(void)
|
|
{
|
|
/*
|
|
* In some circumstances it would be useful to have a set describing
|
|
* what filesystems we might expect to find, e.g. we're not likely to
|
|
* encounter RDOS embedded in a CF card.
|
|
*/
|
|
if (DiskFSMacPart::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatMacPart);
|
|
LOGI(" DI found MacPart, order=%d", fOrder);
|
|
} else if (DiskFSMicroDrive::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatMicroDrive);
|
|
LOGI(" DI found MicroDrive, order=%d", fOrder);
|
|
} else if (DiskFSFocusDrive::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatFocusDrive);
|
|
LOGI(" DI found FocusDrive, order=%d", fOrder);
|
|
} else if (DiskFSCFFA::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
// The CFFA format doesn't have a partition map, but we do insist
|
|
// on finding multiple volumes. It needs to come after MicroDrive,
|
|
// because a disk formatted for CFFA then subsequently partitioned
|
|
// for MicroDrive will still look like valid CFFA unless you zero
|
|
// out the blocks.
|
|
assert(fFormat == kFormatCFFA4 || fFormat == kFormatCFFA8);
|
|
LOGI(" DI found CFFA, order=%d", fOrder);
|
|
} else if (DiskFSFAT::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
// This is really just a trap to catch CFFA cards that were formatted
|
|
// for ProDOS and then re-formatted for MSDOS. As such it needs to
|
|
// come before the ProDOS test. It only works on larger volumes,
|
|
// and can be overridden, so it's pretty safe.
|
|
assert(fFormat == kFormatMSDOS);
|
|
LOGI(" DI found MSDOS, order=%d", fOrder);
|
|
} else if (DiskFSDOS33::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatDOS32 || fFormat == kFormatDOS33);
|
|
LOGI(" DI found DOS3.x, order=%d", fOrder);
|
|
if (fNumSectPerTrack == 13)
|
|
fFormat = kFormatDOS32;
|
|
} else if (DiskFSUNIDOS::TestWideFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
// Should only succeed on 400K embedded chunks.
|
|
assert(fFormat == kFormatDOS33);
|
|
fNumSectPerTrack = 32;
|
|
fNumTracks /= 2;
|
|
LOGI(" DI found 'wide' DOS3.3, order=%d", fOrder);
|
|
} else if (DiskFSUNIDOS::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatUNIDOS);
|
|
fNumSectPerTrack = 32;
|
|
fNumTracks /= 2;
|
|
LOGI(" DI found UNIDOS, order=%d", fOrder);
|
|
} else if (DiskFSOzDOS::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatOzDOS);
|
|
fNumSectPerTrack = 32;
|
|
fNumTracks /= 2;
|
|
LOGI(" DI found OzDOS, order=%d", fOrder);
|
|
} else if (DiskFSProDOS::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatProDOS);
|
|
LOGI(" DI found ProDOS, order=%d", fOrder);
|
|
} else if (DiskFSPascal::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatPascal);
|
|
LOGI(" DI found Pascal, order=%d", fOrder);
|
|
} else if (DiskFSCPM::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatCPM);
|
|
LOGI(" DI found CP/M, order=%d", fOrder);
|
|
} else if (DiskFSRDOS::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatRDOS33 ||
|
|
fFormat == kFormatRDOS32 ||
|
|
fFormat == kFormatRDOS3);
|
|
LOGI(" DI found RDOS 3.3, order=%d", fOrder);
|
|
} else if (DiskFSHFS::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatMacHFS);
|
|
LOGI(" DI found HFS, order=%d", fOrder);
|
|
} else if (DiskFSGutenberg::TestFS(this, &fOrder, &fFormat, DiskFS::kLeniencyNot) == kDIErrNone)
|
|
{
|
|
assert(fFormat == kFormatGutenberg);
|
|
LOGI(" DI found Gutenberg, order=%d", fOrder);
|
|
} else {
|
|
fFormat = kFormatUnknown;
|
|
LOGI(" DI no recognizeable filesystem found (fOrder=%d)",
|
|
fOrder);
|
|
}
|
|
|
|
fFileSysOrder = CalcFSSectorOrder();
|
|
}
|
|
|
|
|
|
/*
|
|
* Override the format determined by the analyzer.
|
|
*
|
|
* If they insist on the presence of a valid filesystem, check to make sure
|
|
* that filesystem actually exists.
|
|
*
|
|
* Note that this does not allow overriding the file structure, which must
|
|
* be clearly identifiable to be at all useful. If the file has no "wrapper"
|
|
* structure, the "unadorned" format should be specified, and the contents
|
|
* identified by the PhysicalFormat.
|
|
*/
|
|
DIError DiskImg::OverrideFormat(PhysicalFormat physical, FSFormat format,
|
|
SectorOrder order)
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
SectorOrder newOrder;
|
|
FSFormat newFormat;
|
|
|
|
LOGI(" DI override: physical=%d format=%d order=%d",
|
|
physical, format, order);
|
|
|
|
if (!IsSectorFormat(physical) && !IsNibbleFormat(physical))
|
|
return kDIErrUnsupportedPhysicalFmt;
|
|
|
|
/* don't allow forcing physical format change */
|
|
if (physical != fPhysical)
|
|
return kDIErrInvalidArg;
|
|
|
|
/* optimization */
|
|
if (physical == fPhysical && format == fFormat && order == fOrder) {
|
|
LOGI(" DI override matches existing, ignoring");
|
|
return kDIErrNone;
|
|
}
|
|
|
|
newOrder = order;
|
|
newFormat = format;
|
|
|
|
switch (format) {
|
|
case kFormatDOS33:
|
|
case kFormatDOS32:
|
|
dierr = DiskFSDOS33::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
// Go ahead and allow the override even if the DOS version is wrong.
|
|
// So long as the sector count is correct, it's okay.
|
|
break;
|
|
case kFormatProDOS:
|
|
dierr = DiskFSProDOS::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatPascal:
|
|
dierr = DiskFSPascal::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatMacHFS:
|
|
dierr = DiskFSHFS::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatUNIDOS:
|
|
dierr = DiskFSUNIDOS::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatOzDOS:
|
|
dierr = DiskFSOzDOS::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatCFFA4:
|
|
case kFormatCFFA8:
|
|
dierr = DiskFSCFFA::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
// So long as it's CFFA, we allow the user to force it to be 4-mode
|
|
// or 8-mode. Don't require newFormat==format.
|
|
break;
|
|
case kFormatMacPart:
|
|
dierr = DiskFSMacPart::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatMicroDrive:
|
|
dierr = DiskFSMicroDrive::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatFocusDrive:
|
|
dierr = DiskFSFocusDrive::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatCPM:
|
|
dierr = DiskFSCPM::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatMSDOS:
|
|
dierr = DiskFSFAT::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
break;
|
|
case kFormatRDOS33:
|
|
case kFormatRDOS32:
|
|
case kFormatRDOS3:
|
|
dierr = DiskFSRDOS::TestFS(this, &newOrder, &newFormat, DiskFS::kLeniencyVery);
|
|
if (newFormat != format)
|
|
dierr = kDIErrFilesystemNotFound; // found RDOS, but wrong flavor
|
|
break;
|
|
case kFormatGenericPhysicalOrd:
|
|
case kFormatGenericProDOSOrd:
|
|
case kFormatGenericDOSOrd:
|
|
case kFormatGenericCPMOrd:
|
|
/* no discussion possible, since there's no FS to validate */
|
|
newFormat = format;
|
|
newOrder = order;
|
|
break;
|
|
case kFormatUnknown:
|
|
/* only valid in rare situations, e.g. CFFA CreatePlaceholder */
|
|
newFormat = format;
|
|
newOrder = order;
|
|
break;
|
|
default:
|
|
dierr = kDIErrUnsupportedFSFmt;
|
|
break;
|
|
}
|
|
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" DI override failed");
|
|
goto bail;
|
|
}
|
|
|
|
/*
|
|
* We passed in "order" to TestFS. If it came back with something
|
|
* different, it means that it didn't like the new order value even
|
|
* when "leniency" was granted.
|
|
*/
|
|
if (newOrder != order) {
|
|
dierr = kDIErrBadOrdering;
|
|
goto bail;
|
|
}
|
|
|
|
fFormat = format;
|
|
fOrder = newOrder;
|
|
fFileSysOrder = CalcFSSectorOrder();
|
|
|
|
LOGI(" DI override accepted");
|
|
|
|
bail:
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Figure out the sector ordering for this filesystem, so we can decide
|
|
* how the sectors need to be re-arranged when we're reading them.
|
|
*
|
|
* If the value returned by this function matches fOrder, then no swapping
|
|
* will be done.
|
|
*
|
|
* NOTE: this table is redundant with some knowledge embedded in the
|
|
* individual "TestFS" functions.
|
|
*/
|
|
DiskImg::SectorOrder DiskImg::CalcFSSectorOrder(void) const
|
|
{
|
|
/* in the absence of information, just leave it alone */
|
|
if (fFormat == kFormatUnknown || fOrder == kSectorOrderUnknown) {
|
|
LOGI(" DI WARNING: FindSectorOrder but format not known");
|
|
return fOrder;
|
|
}
|
|
|
|
assert(fOrder == kSectorOrderPhysical || fOrder == kSectorOrderCPM ||
|
|
fOrder == kSectorOrderProDOS || fOrder == kSectorOrderDOS);
|
|
|
|
switch (fFormat) {
|
|
case kFormatGenericPhysicalOrd:
|
|
case kFormatRDOS32:
|
|
case kFormatRDOS3:
|
|
return kSectorOrderPhysical;
|
|
|
|
case kFormatGenericDOSOrd:
|
|
case kFormatDOS33:
|
|
case kFormatDOS32:
|
|
case kFormatUNIDOS:
|
|
case kFormatOzDOS:
|
|
case kFormatGutenberg:
|
|
return kSectorOrderDOS;
|
|
|
|
case kFormatGenericCPMOrd:
|
|
case kFormatCPM:
|
|
return kSectorOrderCPM;
|
|
|
|
case kFormatGenericProDOSOrd:
|
|
case kFormatProDOS:
|
|
case kFormatRDOS33:
|
|
case kFormatPascal:
|
|
case kFormatMacHFS:
|
|
case kFormatMacMFS:
|
|
case kFormatLisa:
|
|
case kFormatMSDOS:
|
|
case kFormatISO9660:
|
|
case kFormatCFFA4:
|
|
case kFormatCFFA8:
|
|
case kFormatMacPart:
|
|
case kFormatMicroDrive:
|
|
case kFormatFocusDrive:
|
|
return kSectorOrderProDOS;
|
|
|
|
default:
|
|
assert(false);
|
|
return fOrder;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Based on the disk format, figure out if we should prefer blocks or
|
|
* sectors when examining disk contents.
|
|
*/
|
|
bool DiskImg::ShowAsBlocks(void) const
|
|
{
|
|
if (!fHasBlocks)
|
|
return false;
|
|
|
|
/* in the absence of information, assume sectors */
|
|
if (fFormat == kFormatUnknown) {
|
|
if (fOrder == kSectorOrderProDOS)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
|
|
switch (fFormat) {
|
|
case kFormatGenericPhysicalOrd:
|
|
case kFormatGenericDOSOrd:
|
|
case kFormatDOS33:
|
|
case kFormatDOS32:
|
|
case kFormatRDOS3:
|
|
case kFormatRDOS33:
|
|
case kFormatUNIDOS:
|
|
case kFormatOzDOS:
|
|
case kFormatGutenberg:
|
|
return false;
|
|
|
|
case kFormatGenericProDOSOrd:
|
|
case kFormatGenericCPMOrd:
|
|
case kFormatProDOS:
|
|
case kFormatPascal:
|
|
case kFormatMacHFS:
|
|
case kFormatMacMFS:
|
|
case kFormatLisa:
|
|
case kFormatCPM:
|
|
case kFormatMSDOS:
|
|
case kFormatISO9660:
|
|
case kFormatCFFA4:
|
|
case kFormatCFFA8:
|
|
case kFormatMacPart:
|
|
case kFormatMicroDrive:
|
|
case kFormatFocusDrive:
|
|
return true;
|
|
|
|
default:
|
|
assert(false);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Format an image with the requested fileystem format. This only works if
|
|
* the matching DiskFS supports formatting of disks.
|
|
*/
|
|
DIError DiskImg::FormatImage(FSFormat format, const char* volName)
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
DiskFS* pDiskFS = NULL;
|
|
FSFormat savedFormat;
|
|
|
|
LOGI(" DI FormatImage '%s'", volName);
|
|
|
|
/*
|
|
* Open a temporary DiskFS for the requested format. We do this via the
|
|
* standard OpenAppropriate call, so we temporarily switch our format
|
|
* out. (We will eventually replace it, but we want to make sure that
|
|
* local error handling works correctly, so we restore it for now.)
|
|
*/
|
|
savedFormat = fFormat;
|
|
fFormat = format;
|
|
pDiskFS = OpenAppropriateDiskFS(false);
|
|
fFormat = savedFormat;
|
|
|
|
if (pDiskFS == NULL) {
|
|
dierr = kDIErrUnsupportedFSFmt;
|
|
goto bail;
|
|
}
|
|
|
|
dierr = pDiskFS->Format(this, volName);
|
|
if (dierr != kDIErrNone)
|
|
goto bail;
|
|
|
|
LOGI("DI format successful");
|
|
fFormat = format;
|
|
|
|
bail:
|
|
delete pDiskFS;
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Clear an image to zeros, usually done as a prelude to a higher-level format.
|
|
*
|
|
* BUG: this should also handle the track/sector case.
|
|
*
|
|
* HEY: this is awfully slow on large disks... should have some sort of
|
|
* optimized path that just writes to the GFD or something. Maybe even just
|
|
* a "ZeroBlock" instead of "WriteBlock" so we can memset instead of memcpy?
|
|
*/
|
|
DIError DiskImg::ZeroImage(void)
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
uint8_t blkBuf[kBlockSize];
|
|
long block;
|
|
|
|
LOGI(" DI ZeroImage (%ld blocks)", GetNumBlocks());
|
|
memset(blkBuf, 0, sizeof(blkBuf));
|
|
|
|
for (block = 0; block < GetNumBlocks(); block++) {
|
|
dierr = WriteBlock(block, blkBuf);
|
|
if (dierr != kDIErrNone)
|
|
break;
|
|
}
|
|
|
|
return dierr;
|
|
}
|
|
|
|
|
|
/*
|
|
* Set the "scan progress" function.
|
|
*
|
|
* We want to use the same function for our sub-volumes too.
|
|
*/
|
|
void DiskImg::SetScanProgressCallback(ScanProgressCallback func, void* cookie)
|
|
{
|
|
if (fpParentImg != NULL) {
|
|
/* unexpected, but perfectly okay */
|
|
DebugBreak();
|
|
}
|
|
|
|
fpScanProgressCallback = func;
|
|
fScanProgressCookie = cookie;
|
|
fScanCount = 0;
|
|
fScanMsg[0] = '\0';
|
|
fScanLastMsgWhen = time(NULL);
|
|
}
|
|
|
|
/*
|
|
* Update the progress. Call with a string at the start of a volume, then
|
|
* call with a NULL pointer every time we add a file.
|
|
*/
|
|
bool DiskImg::UpdateScanProgress(const char* newStr)
|
|
{
|
|
ScanProgressCallback func = fpScanProgressCallback;
|
|
DiskImg* pImg = this;
|
|
bool result = true;
|
|
|
|
/* search up the tree to find a progress updater */
|
|
while (func == NULL) {
|
|
pImg = pImg->fpParentImg;
|
|
if (pImg == NULL)
|
|
return result; // none defined, bail out
|
|
func = pImg->fpScanProgressCallback;
|
|
}
|
|
|
|
time_t now = time(NULL);
|
|
|
|
if (newStr == NULL) {
|
|
fScanCount++;
|
|
//if ((fScanCount % 100) == 0)
|
|
if (fScanLastMsgWhen != now) {
|
|
result = (*func)(fScanProgressCookie,
|
|
fScanMsg, fScanCount);
|
|
fScanLastMsgWhen = now;
|
|
}
|
|
} else {
|
|
fScanCount = 0;
|
|
strncpy(fScanMsg, newStr, sizeof(fScanMsg));
|
|
fScanMsg[sizeof(fScanMsg)-1] = '\0';
|
|
result = (*func)(fScanProgressCookie, fScanMsg,
|
|
fScanCount);
|
|
fScanLastMsgWhen = now;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* ==========================================================================
|
|
* Block/track/sector I/O
|
|
* ==========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Handle sector order conversions.
|
|
*/
|
|
DIError DiskImg::CalcSectorAndOffset(long track, int sector, SectorOrder imageOrder,
|
|
SectorOrder fsOrder, di_off_t* pOffset, int* pNewSector)
|
|
{
|
|
if (!fHasSectors)
|
|
return kDIErrUnsupportedAccess;
|
|
|
|
/*
|
|
* Sector order conversions. No table is needed for Copy ][+ format,
|
|
* which is equivalent to "physical".
|
|
*/
|
|
static const int raw2dos[16] = {
|
|
0, 7, 14, 6, 13, 5, 12, 4, 11, 3, 10, 2, 9, 1, 8, 15
|
|
};
|
|
static const int dos2raw[16] = {
|
|
0, 13, 11, 9, 7, 5, 3, 1, 14, 12, 10, 8, 6, 4, 2, 15
|
|
};
|
|
static const int raw2prodos[16] = {
|
|
0, 8, 1, 9, 2, 10, 3, 11, 4, 12, 5, 13, 6, 14, 7, 15
|
|
};
|
|
static const int prodos2raw[16] = {
|
|
0, 2, 4, 6, 8, 10, 12, 14, 1, 3, 5, 7, 9, 11, 13, 15
|
|
};
|
|
static const int raw2cpm[16] = {
|
|
0, 11, 6, 1, 12, 7, 2, 13, 8, 3, 14, 9, 4, 15, 10, 5
|
|
};
|
|
static const int cpm2raw[16] = {
|
|
0, 3, 6, 9, 12, 15, 2, 5, 8, 11, 14, 1, 4, 7, 10, 13
|
|
};
|
|
|
|
if (track < 0 || track >= fNumTracks) {
|
|
LOGI(" DI read invalid track %ld", track);
|
|
return kDIErrInvalidTrack;
|
|
}
|
|
if (sector < 0 || sector >= fNumSectPerTrack) {
|
|
LOGI(" DI read invalid sector %d", sector);
|
|
return kDIErrInvalidSector;
|
|
}
|
|
|
|
di_off_t offset;
|
|
int newSector = -1;
|
|
|
|
/*
|
|
* 16-sector disks write sectors in ascending order and then remap
|
|
* them with a translation table.
|
|
*/
|
|
if (fNumSectPerTrack == 16 || fNumSectPerTrack == 32) {
|
|
if (fSectorPairing) {
|
|
assert(fSectorPairOffset == 0 || fSectorPairOffset == 1);
|
|
// this pushes "track" beyond fNumTracks
|
|
track *= 2;
|
|
if (sector >= 16) {
|
|
track++;
|
|
sector -= 16;
|
|
}
|
|
offset = track * fNumSectPerTrack * kSectorSize;
|
|
|
|
sector = sector * 2 + fSectorPairOffset;
|
|
if (sector >= 16) {
|
|
offset += 16*kSectorSize;
|
|
sector -= 16;
|
|
}
|
|
} else {
|
|
offset = track * fNumSectPerTrack * kSectorSize;
|
|
if (sector >= 16) {
|
|
offset += 16*kSectorSize;
|
|
sector -= 16;
|
|
}
|
|
}
|
|
assert(sector >= 0 && sector < 16);
|
|
|
|
/* convert request to "raw" sector number */
|
|
switch (fsOrder) {
|
|
case kSectorOrderProDOS:
|
|
newSector = prodos2raw[sector];
|
|
break;
|
|
case kSectorOrderDOS:
|
|
newSector = dos2raw[sector];
|
|
break;
|
|
case kSectorOrderCPM:
|
|
newSector = cpm2raw[sector];
|
|
break;
|
|
case kSectorOrderPhysical: // used for Copy ][+
|
|
newSector = sector;
|
|
break;
|
|
case kSectorOrderUnknown:
|
|
// should never happen; fall through to "default"
|
|
default:
|
|
assert(false);
|
|
newSector = sector;
|
|
break;
|
|
}
|
|
|
|
/* convert "raw" request to the image's ordering */
|
|
switch (imageOrder) {
|
|
case kSectorOrderProDOS:
|
|
newSector = raw2prodos[newSector];
|
|
break;
|
|
case kSectorOrderDOS:
|
|
newSector = raw2dos[newSector];
|
|
break;
|
|
case kSectorOrderCPM:
|
|
newSector = raw2cpm[newSector];
|
|
break;
|
|
case kSectorOrderPhysical:
|
|
//newSector = newSector;
|
|
break;
|
|
case kSectorOrderUnknown:
|
|
// should never happen; fall through to "default"
|
|
default:
|
|
assert(false);
|
|
//newSector = newSector;
|
|
break;
|
|
}
|
|
|
|
if (imageOrder == fsOrder) {
|
|
assert(sector == newSector);
|
|
}
|
|
|
|
offset += newSector * kSectorSize;
|
|
} else if (fNumSectPerTrack == 13) {
|
|
/* sector skew has no meaning, so assume no translation */
|
|
offset = track * fNumSectPerTrack * kSectorSize;
|
|
newSector = sector;
|
|
offset += newSector * kSectorSize;
|
|
if (imageOrder != fsOrder) {
|
|
/* translation expected */
|
|
LOGI("NOTE: CalcSectorAndOffset for nspt=13 with img=%d fs=%d",
|
|
imageOrder, fsOrder);
|
|
}
|
|
} else {
|
|
assert(false); // should not be here
|
|
|
|
/* try to do something reasonable */
|
|
assert(imageOrder == fsOrder);
|
|
offset = (di_off_t)track * fNumSectPerTrack * kSectorSize;
|
|
offset += sector * kSectorSize;
|
|
}
|
|
|
|
*pOffset = offset;
|
|
*pNewSector = newSector;
|
|
return kDIErrNone;
|
|
}
|
|
|
|
/*
|
|
* Determine whether an image uses a linear mapping. This allows us to
|
|
* optimize block reads & writes, very useful when dealing with logical
|
|
* volumes under Windows (which also use 512-byte blocks).
|
|
*
|
|
* The "imageOrder" argument usually comes from fOrder, and "fsOrder"
|
|
* comes from "fFileSysOrder".
|
|
*/
|
|
inline bool DiskImg::IsLinearBlocks(SectorOrder imageOrder, SectorOrder fsOrder)
|
|
{
|
|
/*
|
|
* Any time fOrder==fFileSysOrder, we know that we have a linear
|
|
* mapping. This holds true for reading ProDOS blocks from a ".po"
|
|
* file or reading DOS sectors from a ".do" file.
|
|
*/
|
|
return (IsSectorFormat(fPhysical) && fHasBlocks &&
|
|
imageOrder == fsOrder);
|
|
}
|
|
|
|
/*
|
|
* Read the specified track and sector, adjusting for sector ordering as
|
|
* appropriate.
|
|
*
|
|
* Copies 256 bytes into "*buf".
|
|
*
|
|
* Returns 0 on success, nonzero on failure.
|
|
*/
|
|
DIError DiskImg::ReadTrackSectorSwapped(long track, int sector, void* buf,
|
|
SectorOrder imageOrder, SectorOrder fsOrder)
|
|
{
|
|
DIError dierr;
|
|
di_off_t offset;
|
|
int newSector = -1;
|
|
|
|
if (buf == NULL)
|
|
return kDIErrInvalidArg;
|
|
|
|
#if 0 // Pre-d13
|
|
if (fNumSectPerTrack == 13) {
|
|
/* no sector skewing possible for 13-sector disks */
|
|
assert(fHasNibbles);
|
|
|
|
return ReadNibbleSector(track, sector, buf, fpNibbleDescr);
|
|
}
|
|
#endif
|
|
|
|
dierr = CalcSectorAndOffset(track, sector, imageOrder, fsOrder,
|
|
&offset, &newSector);
|
|
if (dierr != kDIErrNone)
|
|
return dierr;
|
|
|
|
if (IsSectorFormat(fPhysical)) {
|
|
assert(offset+kSectorSize <= fLength);
|
|
|
|
//LOGI(" DI t=%d s=%d", track,
|
|
// (offset - track * fNumSectPerTrack * kSectorSize) / kSectorSize);
|
|
|
|
dierr = CopyBytesOut(buf, offset, kSectorSize);
|
|
} else if (IsNibbleFormat(fPhysical)) {
|
|
if (imageOrder != kSectorOrderPhysical) {
|
|
LOGI(" NOTE: nibble imageOrder is %d (expected %d)",
|
|
imageOrder, kSectorOrderPhysical);
|
|
}
|
|
dierr = ReadNibbleSector(track, newSector, buf, fpNibbleDescr);
|
|
} else {
|
|
assert(false);
|
|
dierr = kDIErrInternal;
|
|
}
|
|
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Write the specified track and sector, adjusting for sector ordering as
|
|
* appropriate.
|
|
*
|
|
* Copies 256 bytes out of "buf".
|
|
*
|
|
* Returns 0 on success, nonzero on failure.
|
|
*/
|
|
DIError DiskImg::WriteTrackSector(long track, int sector, const void* buf)
|
|
{
|
|
DIError dierr;
|
|
di_off_t offset;
|
|
int newSector = -1;
|
|
|
|
if (buf == NULL)
|
|
return kDIErrInvalidArg;
|
|
if (fReadOnly)
|
|
return kDIErrAccessDenied;
|
|
|
|
#if 0 // Pre-d13
|
|
if (fNumSectPerTrack == 13) {
|
|
/* no sector skewing possible for 13-sector disks */
|
|
assert(fHasNibbles);
|
|
|
|
return WriteNibbleSector(track, sector, buf, fpNibbleDescr);
|
|
}
|
|
#endif
|
|
|
|
dierr = CalcSectorAndOffset(track, sector, fOrder, fFileSysOrder,
|
|
&offset, &newSector);
|
|
if (dierr != kDIErrNone)
|
|
return dierr;
|
|
|
|
if (IsSectorFormat(fPhysical)) {
|
|
assert(offset+kSectorSize <= fLength);
|
|
|
|
//LOGI(" DI t=%d s=%d", track,
|
|
// (offset - track * fNumSectPerTrack * kSectorSize) / kSectorSize);
|
|
|
|
dierr = CopyBytesIn(buf, offset, kSectorSize);
|
|
} else if (IsNibbleFormat(fPhysical)) {
|
|
if (fOrder != kSectorOrderPhysical) {
|
|
LOGI(" NOTE: nibble fOrder is %d (expected %d)",
|
|
fOrder, kSectorOrderPhysical);
|
|
}
|
|
dierr = WriteNibbleSector(track, newSector, buf, fpNibbleDescr);
|
|
} else {
|
|
assert(false);
|
|
dierr = kDIErrInternal;
|
|
}
|
|
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Read a 512-byte block.
|
|
*
|
|
* Copies 512 bytes into "*buf".
|
|
*/
|
|
DIError DiskImg::ReadBlockSwapped(long block, void* buf, SectorOrder imageOrder,
|
|
SectorOrder fsOrder)
|
|
{
|
|
if (!fHasBlocks)
|
|
return kDIErrUnsupportedAccess;
|
|
if (block < 0 || block >= fNumBlocks)
|
|
return kDIErrInvalidBlock;
|
|
if (buf == NULL)
|
|
return kDIErrInvalidArg;
|
|
|
|
DIError dierr;
|
|
long track, blkInTrk;
|
|
|
|
/* if we have a bad block map, check it */
|
|
if (CheckForBadBlocks(block, 1)) {
|
|
dierr = kDIErrReadFailed;
|
|
goto bail;
|
|
}
|
|
|
|
if (fHasSectors && !IsLinearBlocks(imageOrder, fsOrder)) {
|
|
/* run it through the t/s call so we handle DOS ordering */
|
|
track = block / (fNumSectPerTrack/2);
|
|
blkInTrk = block - (track * (fNumSectPerTrack/2));
|
|
dierr = ReadTrackSectorSwapped(track, blkInTrk*2, buf,
|
|
imageOrder, fsOrder);
|
|
if (dierr != kDIErrNone)
|
|
return dierr;
|
|
dierr = ReadTrackSectorSwapped(track, blkInTrk*2+1,
|
|
(char*)buf+kSectorSize, imageOrder, fsOrder);
|
|
} else if (fHasBlocks) {
|
|
/* no sectors, so no swapping; must be linear blocks */
|
|
if (imageOrder != fsOrder) {
|
|
LOGI(" DI NOTE: ReadBlockSwapped on non-sector (%d/%d)",
|
|
imageOrder, fsOrder);
|
|
}
|
|
dierr = CopyBytesOut(buf, (di_off_t) block * kBlockSize, kBlockSize);
|
|
} else {
|
|
assert(false);
|
|
dierr = kDIErrInternal;
|
|
}
|
|
|
|
bail:
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Read multiple blocks.
|
|
*
|
|
* IMPORTANT: this returns immediately when a read fails. The buffer will
|
|
* probably not contain data from all readable sectors. The application is
|
|
* expected to retry the blocks individually.
|
|
*/
|
|
DIError DiskImg::ReadBlocks(long startBlock, int numBlocks, void* buf)
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
|
|
assert(fHasBlocks);
|
|
assert(startBlock >= 0);
|
|
assert(numBlocks > 0);
|
|
assert(buf != NULL);
|
|
|
|
if (startBlock < 0 || numBlocks + startBlock > GetNumBlocks()) {
|
|
assert(false);
|
|
return kDIErrInvalidArg;
|
|
}
|
|
|
|
/* if we have a bad block map, check it */
|
|
if (CheckForBadBlocks(startBlock, numBlocks)) {
|
|
dierr = kDIErrReadFailed;
|
|
goto bail;
|
|
}
|
|
|
|
if (!IsLinearBlocks(fOrder, fFileSysOrder)) {
|
|
/*
|
|
* This isn't a collection of linear blocks, so we need to read it one
|
|
* block at a time with sector swapping. This almost certainly means
|
|
* that we're not reading from physical media, so performance shouldn't
|
|
* be an issue.
|
|
*/
|
|
if (startBlock == 0) {
|
|
LOGI(" ReadBlocks: nonlinear, not trying");
|
|
}
|
|
while (numBlocks--) {
|
|
dierr = ReadBlock(startBlock, buf);
|
|
if (dierr != kDIErrNone)
|
|
goto bail;
|
|
startBlock++;
|
|
buf = (uint8_t*)buf + kBlockSize;
|
|
}
|
|
} else {
|
|
if (startBlock == 0) {
|
|
LOGI(" ReadBlocks: doing big linear reads");
|
|
}
|
|
dierr = CopyBytesOut(buf,
|
|
(di_off_t) startBlock * kBlockSize, numBlocks * kBlockSize);
|
|
}
|
|
|
|
bail:
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Check to see if any blocks in a range of blocks show up in the bad
|
|
* block map. This is primarily useful for 3.5" disk images converted
|
|
* from nibble images, because we convert them directly to "cooked"
|
|
* 512-byte blocks.
|
|
*
|
|
* Returns "true" if we found bad blocks, "false" if not.
|
|
*/
|
|
bool DiskImg::CheckForBadBlocks(long startBlock, int numBlocks)
|
|
{
|
|
int i;
|
|
|
|
if (fpBadBlockMap == NULL)
|
|
return false;
|
|
|
|
for (i = startBlock; i < startBlock+numBlocks; i++) {
|
|
if (fpBadBlockMap->IsSet(i))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* Write a block of data to a DiskImg.
|
|
*
|
|
* Returns immediately when a block write fails. Does not try to write all
|
|
* blocks before returning failure.
|
|
*/
|
|
DIError DiskImg::WriteBlock(long block, const void* buf)
|
|
{
|
|
if (!fHasBlocks)
|
|
return kDIErrUnsupportedAccess;
|
|
if (block < 0 || block >= fNumBlocks)
|
|
return kDIErrInvalidBlock;
|
|
if (buf == NULL)
|
|
return kDIErrInvalidArg;
|
|
if (fReadOnly)
|
|
return kDIErrAccessDenied;
|
|
|
|
DIError dierr;
|
|
long track, blkInTrk;
|
|
|
|
if (fHasSectors && !IsLinearBlocks(fOrder, fFileSysOrder)) {
|
|
/* run it through the t/s call so we handle DOS ordering */
|
|
track = block / (fNumSectPerTrack/2);
|
|
blkInTrk = block - (track * (fNumSectPerTrack/2));
|
|
dierr = WriteTrackSector(track, blkInTrk*2, buf);
|
|
if (dierr != kDIErrNone)
|
|
return dierr;
|
|
dierr = WriteTrackSector(track, blkInTrk*2+1, (char*)buf+kSectorSize);
|
|
} else if (fHasBlocks) {
|
|
/* no sectors, so no swapping; must be linear blocks */
|
|
if (fOrder != fFileSysOrder) {
|
|
LOGI(" DI NOTE: WriteBlock on non-sector (%d/%d)",
|
|
fOrder, fFileSysOrder);
|
|
}
|
|
dierr = CopyBytesIn(buf, (di_off_t)block * kBlockSize, kBlockSize);
|
|
} else {
|
|
assert(false);
|
|
dierr = kDIErrInternal;
|
|
}
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Write multiple blocks.
|
|
*/
|
|
DIError DiskImg::WriteBlocks(long startBlock, int numBlocks, const void* buf)
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
|
|
assert(fHasBlocks);
|
|
assert(startBlock >= 0);
|
|
assert(numBlocks > 0);
|
|
assert(buf != NULL);
|
|
|
|
if (startBlock < 0 || numBlocks + startBlock > GetNumBlocks()) {
|
|
assert(false);
|
|
return kDIErrInvalidArg;
|
|
}
|
|
|
|
if (!IsLinearBlocks(fOrder, fFileSysOrder)) {
|
|
/*
|
|
* This isn't a collection of linear blocks, so we need to write it
|
|
* one block at a time with sector swapping. This almost certainly
|
|
* means that we're not reading from physical media, so performance
|
|
* shouldn't be an issue.
|
|
*/
|
|
if (startBlock == 0) {
|
|
LOGI(" WriteBlocks: nonlinear, not trying");
|
|
}
|
|
while (numBlocks--) {
|
|
dierr = WriteBlock(startBlock, buf);
|
|
if (dierr != kDIErrNone)
|
|
goto bail;
|
|
startBlock++;
|
|
buf = (uint8_t*)buf + kBlockSize;
|
|
}
|
|
} else {
|
|
if (startBlock == 0) {
|
|
LOGI(" WriteBlocks: doing big linear writes");
|
|
}
|
|
dierr = CopyBytesIn(buf,
|
|
(di_off_t) startBlock * kBlockSize, numBlocks * kBlockSize);
|
|
}
|
|
|
|
bail:
|
|
return dierr;
|
|
}
|
|
|
|
|
|
/*
|
|
* Copy a chunk of bytes out of the disk image.
|
|
*
|
|
* (This is the lowest-level read routine in this class.)
|
|
*/
|
|
DIError DiskImg::CopyBytesOut(void* buf, di_off_t offset, int size) const
|
|
{
|
|
DIError dierr;
|
|
|
|
dierr = fpDataGFD->Seek(offset, kSeekSet);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" DI seek off=%ld failed (err=%d)", (long) offset, dierr);
|
|
return dierr;
|
|
}
|
|
|
|
dierr = fpDataGFD->Read(buf, size);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" DI read off=%ld size=%d failed (err=%d)",
|
|
(long) offset, size, dierr);
|
|
return dierr;
|
|
}
|
|
|
|
return kDIErrNone;
|
|
}
|
|
|
|
/*
|
|
* Copy a chunk of bytes into the disk image.
|
|
*
|
|
* Sets the "dirty" flag.
|
|
*
|
|
* (This is the lowest-level write routine in DiskImg.)
|
|
*/
|
|
DIError DiskImg::CopyBytesIn(const void* buf, di_off_t offset, int size)
|
|
{
|
|
DIError dierr;
|
|
|
|
if (fReadOnly) {
|
|
DebugBreak();
|
|
return kDIErrAccessDenied;
|
|
}
|
|
assert(fpDataGFD != NULL); // somebody closed the image?
|
|
|
|
dierr = fpDataGFD->Seek(offset, kSeekSet);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" DI seek off=%ld failed (err=%d)", (long) offset, dierr);
|
|
return dierr;
|
|
}
|
|
|
|
dierr = fpDataGFD->Write(buf, size);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" DI write off=%ld size=%d failed (err=%d)",
|
|
(long) offset, size, dierr);
|
|
return dierr;
|
|
}
|
|
|
|
/* set the dirty flag here and everywhere above */
|
|
DiskImg* pImg = this;
|
|
while (pImg != NULL) {
|
|
pImg->fDirty = true;
|
|
pImg = pImg->fpParentImg;
|
|
}
|
|
|
|
return kDIErrNone;
|
|
}
|
|
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* Image creation
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Create a disk image with the specified parameters.
|
|
*
|
|
* "storageName" and "pNibbleDescr" may be NULL.
|
|
*/
|
|
DIError DiskImg::CreateImage(const char* pathName, const char* storageName,
|
|
OuterFormat outerFormat, FileFormat fileFormat, PhysicalFormat physical,
|
|
const NibbleDescr* pNibbleDescr, SectorOrder order,
|
|
FSFormat format, long numBlocks, bool skipFormat)
|
|
{
|
|
assert(fpDataGFD == NULL); // should not be open already!
|
|
|
|
if (numBlocks <= 0) {
|
|
LOGI("ERROR: bad numBlocks %ld", numBlocks);
|
|
assert(false);
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
fOuterFormat = outerFormat;
|
|
fFileFormat = fileFormat;
|
|
fPhysical = physical;
|
|
SetCustomNibbleDescr(pNibbleDescr);
|
|
fOrder = order;
|
|
fFormat = format;
|
|
|
|
fNumBlocks = numBlocks;
|
|
fHasBlocks = true;
|
|
|
|
return CreateImageCommon(pathName, storageName, skipFormat);
|
|
}
|
|
|
|
DIError DiskImg::CreateImage(const char* pathName, const char* storageName,
|
|
OuterFormat outerFormat, FileFormat fileFormat, PhysicalFormat physical,
|
|
const NibbleDescr* pNibbleDescr, SectorOrder order,
|
|
FSFormat format, long numTracks, long numSectPerTrack, bool skipFormat)
|
|
{
|
|
assert(fpDataGFD == NULL); // should not be open already!
|
|
|
|
if (numTracks <= 0 || numSectPerTrack == 0) {
|
|
LOGI("ERROR: bad tracks/sectors %ld/%ld", numTracks, numSectPerTrack);
|
|
assert(false);
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
fOuterFormat = outerFormat;
|
|
fFileFormat = fileFormat;
|
|
fPhysical = physical;
|
|
SetCustomNibbleDescr(pNibbleDescr);
|
|
fOrder = order;
|
|
fFormat = format;
|
|
|
|
fNumTracks = numTracks;
|
|
fNumSectPerTrack = numSectPerTrack;
|
|
fHasSectors = true;
|
|
if (numSectPerTrack < 0) {
|
|
/* nibble image with non-standard formatting */
|
|
if (!IsNibbleFormat(fPhysical)) {
|
|
LOGI("Whoa: expected nibble format here");
|
|
assert(false);
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
LOGI("Sector image w/o sectors, switching to nibble mode");
|
|
fHasNibbles = true;
|
|
fHasSectors = false;
|
|
fpNibbleDescr = NULL;
|
|
}
|
|
|
|
return CreateImageCommon(pathName, storageName, skipFormat);
|
|
}
|
|
|
|
/*
|
|
* Do the actual disk image creation.
|
|
*/
|
|
DIError DiskImg::CreateImageCommon(const char* pathName, const char* storageName,
|
|
bool skipFormat)
|
|
{
|
|
DIError dierr;
|
|
|
|
/*
|
|
* Step 1: figure out fHasBlocks/fHasSectors/fHasNibbles and any
|
|
* other misc fields.
|
|
*
|
|
* If the disk is a nibble image expected to have a particular
|
|
* volume number, it should have already been set by the application.
|
|
*/
|
|
if (fHasBlocks) {
|
|
if ((fNumBlocks % 8) == 0) {
|
|
fHasSectors = true;
|
|
fNumSectPerTrack = 16;
|
|
fNumTracks = fNumBlocks / 8;
|
|
} else {
|
|
LOGI("NOTE: sector access to new image not possible");
|
|
}
|
|
} else if (fHasSectors) {
|
|
if ((fNumSectPerTrack & 0x01) == 0) {
|
|
fHasBlocks = true;
|
|
fNumBlocks = (fNumTracks * fNumSectPerTrack) / 2;
|
|
} else {
|
|
LOGI("NOTE: block access to new image not possible");
|
|
}
|
|
}
|
|
if (fHasSectors && fPhysical != kPhysicalFormatSectors)
|
|
fHasNibbles = true;
|
|
assert(fHasBlocks || fHasSectors || fHasNibbles);
|
|
|
|
fFileSysOrder = CalcFSSectorOrder();
|
|
fReadOnly = false;
|
|
fDirty = true;
|
|
|
|
/*
|
|
* Step 2: check for invalid arguments and bad combinations.
|
|
*/
|
|
dierr = ValidateCreateFormat();
|
|
if (dierr != kDIErrNone) {
|
|
LOGE("ERROR: CIC arg validation failed, bailing");
|
|
goto bail;
|
|
}
|
|
|
|
/*
|
|
* Step 3: create the destination file. Put this into fpWrapperGFD
|
|
* or fpOuterGFD.
|
|
*
|
|
* The file must not already exist.
|
|
*
|
|
* THOUGHT: should allow creation of an in-memory disk image. This won't
|
|
* work for NuFX, but will work for pretty much everything else.
|
|
*/
|
|
LOGI(" CIC: creating '%s'", pathName);
|
|
int fd;
|
|
fd = open(pathName, O_CREAT | O_EXCL, 0644);
|
|
if (fd < 0) {
|
|
dierr = (DIError) errno;
|
|
LOGE("ERROR: unable to create file '%s' (errno=%d)",
|
|
pathName, dierr);
|
|
goto bail;
|
|
}
|
|
close(fd);
|
|
|
|
GFDFile* pGFDFile;
|
|
pGFDFile = new GFDFile;
|
|
|
|
dierr = pGFDFile->Open(pathName, false);
|
|
if (dierr != kDIErrNone) {
|
|
delete pGFDFile;
|
|
goto bail;
|
|
}
|
|
|
|
if (fOuterFormat == kOuterFormatNone)
|
|
fpWrapperGFD = pGFDFile;
|
|
else
|
|
fpOuterGFD = pGFDFile;
|
|
pGFDFile = NULL;
|
|
|
|
/*
|
|
* Step 4: if we have an outer GFD and therefore don't currently have
|
|
* an fpWrapperGFD, create an expandable memory buffer to use.
|
|
*
|
|
* We want to take a guess at how big the image will be, so compute
|
|
* fLength now.
|
|
*
|
|
* Create an OuterWrapper as needed.
|
|
*/
|
|
if (IsSectorFormat(fPhysical)) {
|
|
if (fHasBlocks)
|
|
fLength = (di_off_t) GetNumBlocks() * kBlockSize;
|
|
else
|
|
fLength = (di_off_t) GetNumTracks() * GetNumSectPerTrack() * kSectorSize;
|
|
} else {
|
|
assert(IsNibbleFormat(fPhysical));
|
|
fLength = GetNumTracks() * GetNibbleTrackAllocLength();
|
|
}
|
|
assert(fLength > 0);
|
|
|
|
if (fpWrapperGFD == NULL) {
|
|
/* shift GFDs and create a new memory GFD, pre-sized */
|
|
GFDBuffer* pGFDBuffer = new GFDBuffer;
|
|
|
|
/* use fLength as a starting point for buffer size; this may expand */
|
|
dierr = pGFDBuffer->Open(NULL, fLength, true, true, false);
|
|
if (dierr != kDIErrNone) {
|
|
delete pGFDBuffer;
|
|
goto bail;
|
|
}
|
|
|
|
fpWrapperGFD = pGFDBuffer;
|
|
pGFDBuffer = NULL;
|
|
}
|
|
|
|
/* create an fpOuterWrapper struct */
|
|
switch (fOuterFormat) {
|
|
case kOuterFormatNone:
|
|
break;
|
|
case kOuterFormatGzip:
|
|
fpOuterWrapper = new OuterGzip;
|
|
if (fpOuterWrapper == NULL) {
|
|
dierr = kDIErrMalloc;
|
|
goto bail;
|
|
}
|
|
break;
|
|
case kOuterFormatZip:
|
|
fpOuterWrapper = new OuterZip;
|
|
if (fpOuterWrapper == NULL) {
|
|
dierr = kDIErrMalloc;
|
|
goto bail;
|
|
}
|
|
break;
|
|
default:
|
|
assert(false);
|
|
dierr = kDIErrInternal;
|
|
goto bail;
|
|
}
|
|
|
|
/*
|
|
* Step 5: tell the ImageWrapper to write itself into the GFD, passing
|
|
* in the blank memory buffer.
|
|
*
|
|
* - Unadorned formats copy from memory buffer to fpWrapperGFD on disk.
|
|
* (With gz, fpWrapperGFD is actually a memory buffer.) fpDataGFD
|
|
* becomes an offset into the file.
|
|
* - 2MG writes header into GFD and follows it with all data; DC42
|
|
* and Sim2e do similar things.
|
|
* - NuFX reopens pathName as SHK file (fpWrapperGFD must point to a
|
|
* file) and accesses the archive through an fpArchive. fpDataGFD
|
|
* is created as a memory buffer and the blank image is copied in.
|
|
* - DDD leaves fpWrapperGFD alone and copies the blank image into a
|
|
* new buffer for fpDataGFD.
|
|
*
|
|
* Sets fWrappedLength when possible, determined from fPhysical and
|
|
* either fNumBlocks or fNumTracks. Creates fpDataGFD, often as a
|
|
* GFDGFD offset into fpWrapperGFD.
|
|
*/
|
|
switch (fFileFormat) {
|
|
case kFileFormat2MG:
|
|
fpImageWrapper = new Wrapper2MG();
|
|
break;
|
|
case kFileFormatDiskCopy42:
|
|
fpImageWrapper = new WrapperDiskCopy42();
|
|
fpImageWrapper->SetStorageName(storageName);
|
|
break;
|
|
case kFileFormatSim2eHDV:
|
|
fpImageWrapper = new WrapperSim2eHDV();
|
|
break;
|
|
case kFileFormatTrackStar:
|
|
fpImageWrapper = new WrapperTrackStar();
|
|
fpImageWrapper->SetStorageName(storageName);
|
|
break;
|
|
case kFileFormatFDI:
|
|
fpImageWrapper = new WrapperFDI();
|
|
break;
|
|
case kFileFormatNuFX:
|
|
fpImageWrapper = new WrapperNuFX();
|
|
fpImageWrapper->SetStorageName(storageName);
|
|
((WrapperNuFX*)fpImageWrapper)->SetCompressType(
|
|
(NuThreadFormat) fNuFXCompressType);
|
|
break;
|
|
case kFileFormatDDD:
|
|
fpImageWrapper = new WrapperDDD();
|
|
break;
|
|
case kFileFormatUnadorned:
|
|
if (IsSectorFormat(fPhysical))
|
|
fpImageWrapper = new WrapperUnadornedSector();
|
|
else if (IsNibbleFormat(fPhysical))
|
|
fpImageWrapper = new WrapperUnadornedNibble();
|
|
else {
|
|
assert(false);
|
|
}
|
|
break;
|
|
default:
|
|
assert(fpImageWrapper == NULL);
|
|
break;
|
|
}
|
|
|
|
if (fpImageWrapper == NULL) {
|
|
LOGW(" DI couldn't figure out the file format");
|
|
dierr = kDIErrUnrecognizedFileFmt;
|
|
goto bail;
|
|
}
|
|
|
|
/* create the wrapper, write the header, and create fpDataGFD */
|
|
assert(fpDataGFD == NULL);
|
|
dierr = fpImageWrapper->Create(fLength, fPhysical, fOrder,
|
|
fDOSVolumeNum, fpWrapperGFD, &fWrappedLength, &fpDataGFD);
|
|
if (dierr != kDIErrNone) {
|
|
LOGE("ImageWrapper Create failed, err=%d", dierr);
|
|
goto bail;
|
|
}
|
|
assert(fpDataGFD != NULL);
|
|
|
|
/*
|
|
* Step 6: "format" fpDataGFD.
|
|
*
|
|
* Note we don't specify an ordering to the "create blank" functions.
|
|
* Either it's sectors, in which case it's all zeroes, or it's nibbles,
|
|
* in which case it's always in physical order.
|
|
*
|
|
* If we're formatting for nibbles, and the application hasn't specified
|
|
* a disk volume number, use the default (254).
|
|
*/
|
|
if (fPhysical == kPhysicalFormatSectors)
|
|
dierr = FormatSectors(fpDataGFD, skipFormat); // zero out the image
|
|
else {
|
|
assert(!skipFormat); // don't skip low-level nibble formatting!
|
|
if (fDOSVolumeNum == kVolumeNumNotSet) {
|
|
fDOSVolumeNum = kDefaultNibbleVolumeNum;
|
|
LOGD(" Using default nibble volume num");
|
|
}
|
|
|
|
dierr = FormatNibbles(fpDataGFD); // write basic nibble stuff
|
|
}
|
|
|
|
|
|
/*
|
|
* We're done!
|
|
*
|
|
* Quick sanity check...
|
|
*/
|
|
if (fOuterFormat != kOuterFormatNone) {
|
|
assert(fpOuterGFD != NULL);
|
|
assert(fpWrapperGFD != NULL);
|
|
assert(fpDataGFD != NULL);
|
|
}
|
|
|
|
bail:
|
|
return dierr;
|
|
}
|
|
|
|
/*
|
|
* Check that the requested format is one we can create.
|
|
*
|
|
* We don't allow .SDK.GZ or 6384-byte nibble 2MG. 2MG sector images
|
|
* must be in DOS or ProDOS order.
|
|
*
|
|
* Only "generic" FS formats may be used. The application may choose
|
|
* to call AnalyzeImage later on to set the actual FS once data has
|
|
* been written.
|
|
*/
|
|
DIError DiskImg::ValidateCreateFormat(void) const
|
|
{
|
|
/*
|
|
* Check for invalid arguments.
|
|
*/
|
|
if (fHasBlocks && fNumBlocks >= 4194304) { // 2GB or larger?
|
|
if (fFileFormat != kFileFormatUnadorned) {
|
|
LOGW("CreateImage: images >= 2GB can only be unadorned");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fOuterFormat == kOuterFormatUnknown ||
|
|
fFileFormat == kFileFormatUnknown ||
|
|
fPhysical == kPhysicalFormatUnknown ||
|
|
fOrder == kSectorOrderUnknown ||
|
|
fFormat == kFormatUnknown)
|
|
{
|
|
LOGW("CreateImage: ambiguous format");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fOuterFormat != kOuterFormatNone &&
|
|
fOuterFormat != kOuterFormatGzip &&
|
|
fOuterFormat != kOuterFormatZip)
|
|
{
|
|
LOGW("CreateImage: unsupported outer format %d", fOuterFormat);
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fFileFormat != kFileFormatUnadorned &&
|
|
fFileFormat != kFileFormat2MG &&
|
|
fFileFormat != kFileFormatDiskCopy42 &&
|
|
fFileFormat != kFileFormatSim2eHDV &&
|
|
fFileFormat != kFileFormatTrackStar &&
|
|
fFileFormat != kFileFormatFDI &&
|
|
fFileFormat != kFileFormatNuFX &&
|
|
fFileFormat != kFileFormatDDD)
|
|
{
|
|
LOGW("CreateImage: unsupported file format %d", fFileFormat);
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fFormat != kFormatGenericPhysicalOrd &&
|
|
fFormat != kFormatGenericProDOSOrd &&
|
|
fFormat != kFormatGenericDOSOrd &&
|
|
fFormat != kFormatGenericCPMOrd)
|
|
{
|
|
LOGW("CreateImage: may only use 'generic' formats");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
/*
|
|
* Check for invalid combinations.
|
|
*/
|
|
if (fPhysical != kPhysicalFormatSectors) {
|
|
if (fOrder != kSectorOrderPhysical) {
|
|
LOGW("CreateImage: nibble images are always 'physical' order");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
if (GetHasSectors() == false && GetHasNibbles() == false) {
|
|
LOGW("CreateImage: must set hasSectors(%d) or hasNibbles(%d)",
|
|
GetHasSectors(), GetHasNibbles());
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
if (fpNibbleDescr == NULL && GetNumSectPerTrack() > 0) {
|
|
LOGW("CreateImage: must provide NibbleDescr for non-sector");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
if (fpNibbleDescr != NULL &&
|
|
fpNibbleDescr->numSectors != GetNumSectPerTrack())
|
|
{
|
|
LOGW("CreateImage: ?? nd->numSectors=%d, GetNumSectPerTrack=%d",
|
|
fpNibbleDescr->numSectors, GetNumSectPerTrack());
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
if (fpNibbleDescr != NULL && (
|
|
(fpNibbleDescr->numSectors == 13 &&
|
|
fpNibbleDescr->encoding != kNibbleEnc53) ||
|
|
(fpNibbleDescr->numSectors == 16 &&
|
|
fpNibbleDescr->encoding != kNibbleEnc62))
|
|
)
|
|
{
|
|
LOGW("CreateImage: sector count/encoding mismatch");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
if (GetNumTracks() != kTrackCount525 &&
|
|
!(GetNumTracks() == 40 && fFileFormat == kFileFormatTrackStar))
|
|
{
|
|
LOGW("CreateImage: unexpected track count %ld", GetNumTracks());
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fFileFormat == kFileFormat2MG) {
|
|
if (fPhysical != kPhysicalFormatSectors &&
|
|
fPhysical != kPhysicalFormatNib525_6656)
|
|
{
|
|
LOGW("CreateImage: 2MG can't handle physical %d", fPhysical);
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
|
|
if (fPhysical == kPhysicalFormatSectors &&
|
|
(fOrder != kSectorOrderProDOS &&
|
|
fOrder != kSectorOrderDOS))
|
|
{
|
|
LOGW("CreateImage: 2MG requires DOS or ProDOS ordering");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fFileFormat == kFileFormatNuFX) {
|
|
if (fOuterFormat != kOuterFormatNone) {
|
|
LOGW("CreateImage: can't mix NuFX and outer wrapper");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fPhysical != kPhysicalFormatSectors) {
|
|
LOGW("CreateImage: NuFX physical must be sectors");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fOrder != kSectorOrderProDOS) {
|
|
LOGW("CreateImage: NuFX is always ProDOS-order");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fFileFormat == kFileFormatDiskCopy42) {
|
|
if (fPhysical != kPhysicalFormatSectors) {
|
|
LOGW("CreateImage: DC42 physical must be sectors");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if ((GetHasBlocks() && GetNumBlocks() != 1600) ||
|
|
(GetHasSectors() &&
|
|
(GetNumTracks() != 200 || GetNumSectPerTrack() != 16)))
|
|
{
|
|
LOGW("CreateImage: DC42 only for 800K disks");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fOrder != kSectorOrderProDOS &&
|
|
fOrder != kSectorOrderDOS) // used for UNIDOS disks??
|
|
{
|
|
LOGW("CreateImage: DC42 is always ProDOS or DOS");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fFileFormat == kFileFormatSim2eHDV) {
|
|
if (fPhysical != kPhysicalFormatSectors) {
|
|
LOGW("CreateImage: Sim2eHDV physical must be sectors");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fOrder != kSectorOrderProDOS) {
|
|
LOGW("CreateImage: Sim2eHDV is always ProDOS-order");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fFileFormat == kFileFormatTrackStar) {
|
|
if (fPhysical != kPhysicalFormatNib525_Var) {
|
|
LOGW("CreateImage: TrackStar physical must be var-nibbles");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fFileFormat == kFileFormatFDI) {
|
|
if (fPhysical != kPhysicalFormatNib525_Var) {
|
|
LOGW("CreateImage: FDI physical must be var-nibbles");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
if (fFileFormat == kFileFormatDDD) {
|
|
if (fPhysical != kPhysicalFormatSectors) {
|
|
LOGW("CreateImage: DDD physical must be sectors");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (fOrder != kSectorOrderDOS) {
|
|
LOGW("CreateImage: DDD is always DOS-order");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
if (!GetHasSectors() || GetNumTracks() != 35 ||
|
|
GetNumSectPerTrack() != 16)
|
|
{
|
|
LOGW("CreateImage: DDD is only for 16-sector 35-track disks");
|
|
return kDIErrInvalidCreateReq;
|
|
}
|
|
}
|
|
|
|
return kDIErrNone;
|
|
}
|
|
|
|
/*
|
|
* Create a blank image for physical=="sectors".
|
|
*
|
|
* fLength must be a multiple of 256.
|
|
*
|
|
* If "quickFormat" is set, only the very last sector is written (to set
|
|
* the EOF on the file).
|
|
*/
|
|
DIError DiskImg::FormatSectors(GenericFD* pGFD, bool quickFormat) const
|
|
{
|
|
DIError dierr = kDIErrNone;
|
|
char sctBuf[kSectorSize];
|
|
di_off_t length;
|
|
|
|
assert(fLength > 0 && (fLength & 0xff) == 0);
|
|
|
|
//if (!(fLength & 0x01))
|
|
// return FormatBlocks(pGFD);
|
|
|
|
memset(sctBuf, 0, sizeof(sctBuf));
|
|
pGFD->Rewind();
|
|
|
|
if (quickFormat) {
|
|
dierr = pGFD->Seek(fLength - sizeof(sctBuf), kSeekSet);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" FormatSectors: GFD seek %ld failed (err=%d)",
|
|
(long) fLength - sizeof(sctBuf), dierr);
|
|
goto bail;
|
|
}
|
|
dierr = pGFD->Write(sctBuf, sizeof(sctBuf), NULL);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" FormatSectors: GFD quick write failed (err=%d)", dierr);
|
|
goto bail;
|
|
}
|
|
} else {
|
|
for (length = fLength ; length > 0; length -= sizeof(sctBuf)) {
|
|
dierr = pGFD->Write(sctBuf, sizeof(sctBuf), NULL);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" FormatSectors: GFD write failed (err=%d)", dierr);
|
|
goto bail;
|
|
}
|
|
}
|
|
assert(length == 0);
|
|
}
|
|
|
|
|
|
bail:
|
|
return dierr;
|
|
}
|
|
|
|
#if 0 // didn't help
|
|
/*
|
|
* Create a blank image for physical=="sectors". This is called from
|
|
* FormatSectors when it looks like we're formatting entire blocks.
|
|
*/
|
|
DIError
|
|
DiskImg::FormatBlocks(GenericFD* pGFD) const
|
|
{
|
|
DIError dierr;
|
|
char blkBuf[kBlockSize];
|
|
long length;
|
|
time_t start, end;
|
|
|
|
assert(fLength > 0 && (fLength & 0x1ff) == 0);
|
|
|
|
start = time(NULL);
|
|
|
|
memset(blkBuf, 0, sizeof(blkBuf));
|
|
pGFD->Rewind();
|
|
|
|
for (length = fLength ; length > 0; length -= sizeof(blkBuf)) {
|
|
dierr = pGFD->Write(blkBuf, sizeof(blkBuf), NULL);
|
|
if (dierr != kDIErrNone) {
|
|
LOGI(" FormatBlocks: GFD write failed (err=%d)", dierr);
|
|
return dierr;
|
|
}
|
|
}
|
|
assert(length == 0);
|
|
|
|
end = time(NULL);
|
|
LOGI("FormatBlocks complete, time=%ld", end - start);
|
|
|
|
return kDIErrNone;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* ===========================================================================
|
|
* Utility functions
|
|
* ===========================================================================
|
|
*/
|
|
|
|
/*
|
|
* Add a note to this disk image.
|
|
*
|
|
* This is how we communicate cautions and warnings to the user. Use
|
|
* linefeeds ('\n') to indicate line breaks.
|
|
*
|
|
* The maximum length of a single note is set by the size of "buf".
|
|
*/
|
|
void DiskImg::AddNote(NoteType type, const char* fmt, ...)
|
|
{
|
|
char buf[512];
|
|
char* cp = buf;
|
|
int maxLen = sizeof(buf);
|
|
va_list args;
|
|
int len;
|
|
|
|
/*
|
|
* Prepend a string that highlights the note.
|
|
*/
|
|
switch (type) {
|
|
case kNoteWarning:
|
|
strcpy(cp, "- WARNING: ");
|
|
break;
|
|
default:
|
|
strcpy(cp, "- ");
|
|
break;
|
|
}
|
|
len = strlen(cp);
|
|
cp += len;
|
|
maxLen -= len;
|
|
|
|
/*
|
|
* Add the note.
|
|
*/
|
|
va_start(args, fmt);
|
|
#if defined(HAVE_VSNPRINTF)
|
|
(void) vsnprintf(cp, maxLen, fmt, args);
|
|
#elif defined(HAVE__VSNPRINTF)
|
|
(void) _vsnprintf(cp, maxLen, fmt, args);
|
|
#else
|
|
# error "hosed"
|
|
#endif
|
|
va_end(args);
|
|
|
|
buf[sizeof(buf)-2] = '\0'; // leave room for additional '\n'
|
|
len = strlen(buf);
|
|
if (len > 0 && buf[len-1] != '\n') {
|
|
buf[len] = '\n';
|
|
buf[len+1] = '\0';
|
|
len++;
|
|
}
|
|
|
|
LOGD("+++ adding note '%s'", buf);
|
|
|
|
if (fNotes == NULL) {
|
|
fNotes = new char[len +1];
|
|
if (fNotes == NULL) {
|
|
LOGW("Unable to create notes[%d]", len+1);
|
|
assert(false);
|
|
return;
|
|
}
|
|
strcpy(fNotes, buf);
|
|
} else {
|
|
int existingLen = strlen(fNotes);
|
|
char* newNotes = new char[existingLen + len +1];
|
|
if (newNotes == NULL) {
|
|
LOGW("Unable to create newNotes[%d]", existingLen+len+1);
|
|
assert(false);
|
|
return;
|
|
}
|
|
strcpy(newNotes, fNotes);
|
|
strcpy(newNotes + existingLen, buf);
|
|
delete[] fNotes;
|
|
fNotes = newNotes;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return a string with the notes in it.
|
|
*/
|
|
const char* DiskImg::GetNotes(void) const
|
|
{
|
|
if (fNotes == NULL)
|
|
return "";
|
|
else
|
|
return fNotes;
|
|
}
|
|
|
|
|
|
/*
|
|
* Get length and offset of tracks in a nibble image. This is necessary
|
|
* because of formats with variable-length tracks (e.g. TrackStar).
|
|
*/
|
|
int DiskImg::GetNibbleTrackLength(long track) const
|
|
{
|
|
assert(fpImageWrapper != NULL);
|
|
return fpImageWrapper->GetNibbleTrackLength(fPhysical, track);
|
|
}
|
|
|
|
int DiskImg::GetNibbleTrackOffset(long track) const
|
|
{
|
|
assert(fpImageWrapper != NULL);
|
|
return fpImageWrapper->GetNibbleTrackOffset(fPhysical, track);
|
|
}
|
|
|
|
|
|
/*
|
|
* Return a new object with the appropriate DiskFS sub-class.
|
|
*
|
|
* If the image hasn't been analyzed, or was analyzed to no avail, "NULL"
|
|
* is returned unless "allowUnknown" is set to "true". In that case, a
|
|
* DiskFSUnknown is returned.
|
|
*
|
|
* This doesn't inspire the DiskFS to do any processing, just creates the
|
|
* new object.
|
|
*/
|
|
DiskFS* DiskImg::OpenAppropriateDiskFS(bool allowUnknown)
|
|
{
|
|
DiskFS* pDiskFS = NULL;
|
|
|
|
/*
|
|
* Create an appropriate DiskFS object.
|
|
*/
|
|
switch (GetFSFormat()) {
|
|
case DiskImg::kFormatDOS33:
|
|
case DiskImg::kFormatDOS32:
|
|
pDiskFS = new DiskFSDOS33();
|
|
break;
|
|
case DiskImg::kFormatProDOS:
|
|
pDiskFS = new DiskFSProDOS();
|
|
break;
|
|
case DiskImg::kFormatPascal:
|
|
pDiskFS = new DiskFSPascal();
|
|
break;
|
|
case DiskImg::kFormatMacHFS:
|
|
pDiskFS = new DiskFSHFS();
|
|
break;
|
|
case DiskImg::kFormatUNIDOS:
|
|
pDiskFS = new DiskFSUNIDOS();
|
|
break;
|
|
case DiskImg::kFormatOzDOS:
|
|
pDiskFS = new DiskFSOzDOS();
|
|
break;
|
|
case DiskImg::kFormatCFFA4:
|
|
case DiskImg::kFormatCFFA8:
|
|
pDiskFS = new DiskFSCFFA();
|
|
break;
|
|
case DiskImg::kFormatMacPart:
|
|
pDiskFS = new DiskFSMacPart();
|
|
break;
|
|
case DiskImg::kFormatMicroDrive:
|
|
pDiskFS = new DiskFSMicroDrive();
|
|
break;
|
|
case DiskImg::kFormatFocusDrive:
|
|
pDiskFS = new DiskFSFocusDrive();
|
|
break;
|
|
case DiskImg::kFormatCPM:
|
|
pDiskFS = new DiskFSCPM();
|
|
break;
|
|
case DiskImg::kFormatMSDOS:
|
|
pDiskFS = new DiskFSFAT();
|
|
break;
|
|
case DiskImg::kFormatRDOS33:
|
|
case DiskImg::kFormatRDOS32:
|
|
case DiskImg::kFormatRDOS3:
|
|
pDiskFS = new DiskFSRDOS();
|
|
break;
|
|
case DiskImg::kFormatGutenberg:
|
|
pDiskFS = new DiskFSGutenberg();
|
|
break;
|
|
|
|
default:
|
|
LOGI("WARNING: unhandled DiskFS case %d", GetFSFormat());
|
|
assert(false);
|
|
/* fall through */
|
|
case DiskImg::kFormatGenericPhysicalOrd:
|
|
case DiskImg::kFormatGenericProDOSOrd:
|
|
case DiskImg::kFormatGenericDOSOrd:
|
|
case DiskImg::kFormatGenericCPMOrd:
|
|
case DiskImg::kFormatUnknown:
|
|
if (allowUnknown) {
|
|
pDiskFS = new DiskFSUnknown();
|
|
break;
|
|
}
|
|
}
|
|
|
|
return pDiskFS;
|
|
}
|
|
|
|
|
|
/*
|
|
* Fill an array with SectorOrder values. The ordering specified by "first"
|
|
* will come first. Unused entries will be set to "unknown" and should be
|
|
* ignored.
|
|
*
|
|
* "orderArray" must have kSectorOrderMax elements.
|
|
*/
|
|
/*static*/ void DiskImg::GetSectorOrderArray(SectorOrder* orderArray,
|
|
SectorOrder first)
|
|
{
|
|
// init array
|
|
for (int i = 0; i < kSectorOrderMax; i++)
|
|
orderArray[i] = (SectorOrder) i;
|
|
|
|
// pull the best-guess ordering to the front
|
|
assert(orderArray[0] == kSectorOrderUnknown);
|
|
|
|
orderArray[0] = first;
|
|
orderArray[(int) first] = kSectorOrderUnknown;
|
|
|
|
// don't bother checking CP/M sector order
|
|
orderArray[kSectorOrderCPM] = kSectorOrderUnknown;
|
|
}
|
|
|
|
|
|
/*
|
|
* Return a short string describing "format".
|
|
*
|
|
* These are semi-duplicated in ImageFormatDialog.cpp in CiderPress.
|
|
*/
|
|
/*static*/ const char* DiskImg::ToStringCommon(int format,
|
|
const ToStringLookup* pTable, int tableSize)
|
|
{
|
|
for (int i = 0; i < tableSize; i++) {
|
|
if (pTable[i].format == format)
|
|
return pTable[i].str;
|
|
}
|
|
|
|
assert(false);
|
|
return "(unknown)";
|
|
}
|
|
|
|
/*static*/ const char* DiskImg::ToString(OuterFormat format)
|
|
{
|
|
static const ToStringLookup kOuterFormats[] = {
|
|
{ DiskImg::kOuterFormatUnknown, "Unknown format" },
|
|
{ DiskImg::kOuterFormatNone, "(none)" },
|
|
{ DiskImg::kOuterFormatCompress, "UNIX compress" },
|
|
{ DiskImg::kOuterFormatGzip, "gzip" },
|
|
{ DiskImg::kOuterFormatBzip2, "bzip2" },
|
|
{ DiskImg::kOuterFormatZip, "Zip archive" },
|
|
};
|
|
|
|
return ToStringCommon(format, kOuterFormats, NELEM(kOuterFormats));
|
|
}
|
|
|
|
/*static*/ const char* DiskImg::ToString(FileFormat format)
|
|
{
|
|
static const ToStringLookup kFileFormats[] = {
|
|
{ DiskImg::kFileFormatUnknown, "Unknown format" },
|
|
{ DiskImg::kFileFormatUnadorned, "Unadorned raw data" },
|
|
{ DiskImg::kFileFormat2MG, "2MG" },
|
|
{ DiskImg::kFileFormatNuFX, "NuFX (ShrinkIt)" },
|
|
{ DiskImg::kFileFormatDiskCopy42, "DiskCopy 4.2" },
|
|
{ DiskImg::kFileFormatDiskCopy60, "DiskCopy 6.0" },
|
|
{ DiskImg::kFileFormatDavex, "Davex volume image" },
|
|
{ DiskImg::kFileFormatSim2eHDV, "Sim //e HDV" },
|
|
{ DiskImg::kFileFormatTrackStar, "TrackStar image" },
|
|
{ DiskImg::kFileFormatFDI, "FDI image" },
|
|
{ DiskImg::kFileFormatDDD, "DDD" },
|
|
{ DiskImg::kFileFormatDDDDeluxe, "DDDDeluxe" },
|
|
};
|
|
|
|
return ToStringCommon(format, kFileFormats, NELEM(kFileFormats));
|
|
};
|
|
|
|
/*static*/ const char* DiskImg::ToString(PhysicalFormat format)
|
|
{
|
|
static const ToStringLookup kPhysicalFormats[] = {
|
|
{ DiskImg::kPhysicalFormatUnknown, "Unknown format" },
|
|
{ DiskImg::kPhysicalFormatSectors, "Sectors" },
|
|
{ DiskImg::kPhysicalFormatNib525_6656, "Raw nibbles (6656-byte)" },
|
|
{ DiskImg::kPhysicalFormatNib525_6384, "Raw nibbles (6384-byte)" },
|
|
{ DiskImg::kPhysicalFormatNib525_Var, "Raw nibbles (variable len)" },
|
|
};
|
|
|
|
return ToStringCommon(format, kPhysicalFormats, NELEM(kPhysicalFormats));
|
|
};
|
|
|
|
/*static*/ const char* DiskImg::ToString(SectorOrder format)
|
|
{
|
|
static const ToStringLookup kSectorOrders[] = {
|
|
{ DiskImg::kSectorOrderUnknown, "Unknown ordering" },
|
|
{ DiskImg::kSectorOrderProDOS, "ProDOS block ordering" },
|
|
{ DiskImg::kSectorOrderDOS, "DOS sector ordering" },
|
|
{ DiskImg::kSectorOrderCPM, "CP/M block ordering" },
|
|
{ DiskImg::kSectorOrderPhysical, "Physical sector ordering" },
|
|
};
|
|
|
|
return ToStringCommon(format, kSectorOrders, NELEM(kSectorOrders));
|
|
};
|
|
|
|
/*static*/ const char* DiskImg::ToString(FSFormat format)
|
|
{
|
|
static const ToStringLookup kFSFormats[] = {
|
|
{ DiskImg::kFormatUnknown, "Unknown" },
|
|
{ DiskImg::kFormatProDOS, "ProDOS" },
|
|
{ DiskImg::kFormatDOS33, "DOS 3.3" },
|
|
{ DiskImg::kFormatDOS32, "DOS 3.2" },
|
|
{ DiskImg::kFormatPascal, "Pascal" },
|
|
{ DiskImg::kFormatMacHFS, "HFS" },
|
|
{ DiskImg::kFormatMacMFS, "MFS" },
|
|
{ DiskImg::kFormatLisa, "Lisa" },
|
|
{ DiskImg::kFormatCPM, "CP/M" },
|
|
{ DiskImg::kFormatMSDOS, "MS-DOS FAT" },
|
|
{ DiskImg::kFormatISO9660, "ISO-9660" },
|
|
{ DiskImg::kFormatRDOS33, "RDOS 3.3 (16-sector)" },
|
|
{ DiskImg::kFormatRDOS32, "RDOS 3.2 (13-sector)" },
|
|
{ DiskImg::kFormatRDOS3, "RDOS 3 (cracked 13-sector)" },
|
|
{ DiskImg::kFormatGenericDOSOrd, "Generic DOS sectors" },
|
|
{ DiskImg::kFormatGenericProDOSOrd, "Generic ProDOS blocks" },
|
|
{ DiskImg::kFormatGenericPhysicalOrd, "Generic raw sectors" },
|
|
{ DiskImg::kFormatGenericCPMOrd, "Generic CP/M blocks" },
|
|
{ DiskImg::kFormatUNIDOS, "UNIDOS (400K DOS x2)" },
|
|
{ DiskImg::kFormatOzDOS, "OzDOS (400K DOS x2)" },
|
|
{ DiskImg::kFormatCFFA4, "CFFA (4 or 6 partitions)" },
|
|
{ DiskImg::kFormatCFFA8, "CFFA (8 partitions)" },
|
|
{ DiskImg::kFormatMacPart, "Macintosh partitioned disk" },
|
|
{ DiskImg::kFormatMicroDrive, "MicroDrive partitioned disk" },
|
|
{ DiskImg::kFormatFocusDrive, "FocusDrive partitioned disk" },
|
|
};
|
|
|
|
return ToStringCommon(format, kFSFormats, NELEM(kFSFormats));
|
|
};
|
|
|
|
|
|
/*
|
|
* strerror() equivalent for DiskImg errors.
|
|
*/
|
|
const char* DiskImgLib::DIStrError(DIError dierr)
|
|
{
|
|
if (dierr > 0) {
|
|
const char* msg;
|
|
msg = strerror(dierr);
|
|
if (msg != NULL)
|
|
return msg;
|
|
}
|
|
|
|
/*
|
|
* BUG: this should be set up as per-thread storage in an MT environment.
|
|
* I would be more inclined to worry about this if I was expecting
|
|
* to hit "default:". So long as valid values are passed in, and the
|
|
* switch statement is kept up to date, we should never have cause
|
|
* to return this.
|
|
*
|
|
* An easier solution, should this present a problem for someone, would
|
|
* be to have the function return NULL or "unknown error" when the
|
|
* error value isn't recognized. I'd recommend leaving it as-is for
|
|
* debug builds, though, as it's helpful to know *which* error is not
|
|
* recognized.
|
|
*/
|
|
static char defaultMsg[32];
|
|
|
|
switch (dierr) {
|
|
case kDIErrNone:
|
|
return "(no error)";
|
|
|
|
case kDIErrAccessDenied:
|
|
return "access denied";
|
|
case kDIErrVWAccessForbidden:
|
|
return "for safety, write access to this volume is forbidden";
|
|
case kDIErrSharingViolation:
|
|
return "file is already open and cannot be shared";
|
|
case kDIErrNoExclusiveAccess:
|
|
return "couldn't get exclusive access";
|
|
case kDIErrWriteProtected:
|
|
return "write protected";
|
|
case kDIErrCDROMNotSupported:
|
|
return "access to CD-ROM drives is not supported";
|
|
case kDIErrASPIFailure:
|
|
return "an ASPI request failed";
|
|
case kDIErrSPTIFailure:
|
|
return "an SPTI request failed";
|
|
case kDIErrSCSIFailure:
|
|
return "a SCSI request failed";
|
|
case kDIErrDeviceNotReady:
|
|
return "device not ready";
|
|
|
|
case kDIErrFileNotFound:
|
|
return "file not found";
|
|
case kDIErrForkNotFound:
|
|
return "fork not found";
|
|
case kDIErrAlreadyOpen:
|
|
return "an image is already open";
|
|
case kDIErrFileOpen:
|
|
return "file is open";
|
|
case kDIErrNotReady:
|
|
return "object not ready";
|
|
case kDIErrFileExists:
|
|
return "file already exists";
|
|
case kDIErrDirectoryExists:
|
|
return "directory already exists";
|
|
|
|
case kDIErrEOF:
|
|
return "end of file reached";
|
|
case kDIErrReadFailed:
|
|
return "read failed";
|
|
case kDIErrWriteFailed:
|
|
return "write failed";
|
|
case kDIErrDataUnderrun:
|
|
return "tried to read past end of file";
|
|
case kDIErrDataOverrun:
|
|
return "tried to write past end of file";
|
|
case kDIErrGenericIO:
|
|
return "I/O error";
|
|
|
|
case kDIErrOddLength:
|
|
return "image size is wrong";
|
|
case kDIErrUnrecognizedFileFmt:
|
|
return "not a recognized disk image format";
|
|
case kDIErrBadFileFormat:
|
|
return "image file contents aren't in expected format";
|
|
case kDIErrUnsupportedFileFmt:
|
|
return "file format not supported";
|
|
case kDIErrUnsupportedPhysicalFmt:
|
|
return "physical format not supported";
|
|
case kDIErrUnsupportedFSFmt:
|
|
return "filesystem type not supported";
|
|
case kDIErrBadOrdering:
|
|
return "bad sector ordering";
|
|
case kDIErrFilesystemNotFound:
|
|
return "specified filesystem not found";
|
|
case kDIErrUnsupportedAccess:
|
|
return "the method of access used isn't supported for this image";
|
|
case kDIErrUnsupportedImageFeature:
|
|
return "image file uses features that CiderPress doesn't support";
|
|
|
|
case kDIErrInvalidTrack:
|
|
return "invalid track number";
|
|
case kDIErrInvalidSector:
|
|
return "invalid sector number";
|
|
case kDIErrInvalidBlock:
|
|
return "invalid block number";
|
|
case kDIErrInvalidIndex:
|
|
return "invalid index number";
|
|
|
|
case kDIErrDirectoryLoop:
|
|
return "disk directory structure has an infinite loop";
|
|
case kDIErrFileLoop:
|
|
return "file structure has an infinite loop";
|
|
case kDIErrBadDiskImage:
|
|
return "the filesystem on this image appears damaged";
|
|
case kDIErrBadFile:
|
|
return "file structure appears damaged";
|
|
case kDIErrBadDirectory:
|
|
return "a directory appears damaged";
|
|
case kDIErrBadPartition:
|
|
return "bad partition";
|
|
|
|
case kDIErrFileArchive:
|
|
return "this looks like a file archive, not a disk archive";
|
|
case kDIErrUnsupportedCompression:
|
|
return "compression method not supported";
|
|
case kDIErrBadChecksum:
|
|
return "checksum doesn't match, data may be corrupted";
|
|
case kDIErrBadCompressedData:
|
|
return "the compressed data is corrupted";
|
|
case kDIErrBadArchiveStruct:
|
|
return "archive may be damaged";
|
|
|
|
case kDIErrBadNibbleSectors:
|
|
return "couldn't read sectors from this image";
|
|
case kDIErrSectorUnreadable:
|
|
return "sector not readable";
|
|
case kDIErrInvalidDiskByte:
|
|
return "found invalid nibble image disk byte";
|
|
case kDIErrBadRawData:
|
|
return "couldn't convert raw data to nibble data";
|
|
|
|
case kDIErrInvalidFileName:
|
|
return "invalid file name";
|
|
case kDIErrDiskFull:
|
|
return "disk full";
|
|
case kDIErrVolumeDirFull:
|
|
return "volume directory is full";
|
|
case kDIErrInvalidCreateReq:
|
|
return "invalid disk image create request";
|
|
case kDIErrTooBig:
|
|
return "size is larger than we can handle";
|
|
|
|
case kDIErrGeneric:
|
|
return "DiskImg generic error";
|
|
case kDIErrInternal:
|
|
return "DiskImg internal error";
|
|
case kDIErrMalloc:
|
|
return "memory allocation failure";
|
|
case kDIErrInvalidArg:
|
|
return "invalid argument";
|
|
case kDIErrNotSupported:
|
|
return "feature not supported";
|
|
case kDIErrCancelled:
|
|
return "cancelled by user";
|
|
|
|
case kDIErrNufxLibInitFailed:
|
|
return "NufxLib initialization failed";
|
|
|
|
default:
|
|
sprintf(defaultMsg, "(error=%d)", dierr);
|
|
return defaultMsg;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* High ASCII conversion table, from Technical Note PT515,
|
|
* "Apple File Exchange Q&As". The table is available in a hopelessly
|
|
* blurry PDF or a pair of GIFs created with small fonts, but I think I
|
|
* have mostly captured it.
|
|
*/
|
|
/*static*/ const uint8_t DiskImg::kMacHighASCII[128+1] =
|
|
"AACENOUaaaaaaceeeeiiiinooooouuuu" // 0x80 - 0x9f
|
|
"tocL$oPBrct'.=AO%+<>YudsPpSaoOao" // 0xa0 - 0xbf
|
|
"?!-vf=d<>. AAOOo--\"\"''/oyY/o<> f" // 0xc0 - 0xdf
|
|
"|*,,%AEAEEIIIIOOaOUUUi^~-,**,\"? "; // 0xe0 - 0xff
|
|
|
|
|
|
/*
|
|
* Hack for Win32 systems. See Win32BlockIO.cpp for commentary.
|
|
*/
|
|
bool DiskImgLib::gAllowWritePhys0 = false;
|
|
/*static*/ void DiskImg::SetAllowWritePhys0(bool val) {
|
|
DiskImgLib::gAllowWritePhys0 = val;
|
|
}
|