--- /dev/null
+--- linux-2.6.19.old/lib/Makefile 2007-04-18 17:41:22.679403384 +0200
++++ linux-2.6.19.dev/lib/Makefile 2007-04-18 17:41:43.303268080 +0200
+@@ -54,6 +54,7 @@
+ obj-$(CONFIG_AUDIT_GENERIC) += audit.o
+
+ obj-$(CONFIG_SWIOTLB) += swiotlb.o
++obj-y += LzmaDecode.o
+
+ hostprogs-y := gen_crc32table
+ clean-files := crc32table.h
+--- linux-2.6.19.old/lib/LzmaDecode.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.19.dev/lib/LzmaDecode.c 2006-12-14 03:13:20.000000000 +0100
+@@ -0,0 +1,663 @@
++/*
++ LzmaDecode.c
++ LZMA Decoder
++
++ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25)
++ http://www.7-zip.org/
++
++ LZMA SDK is licensed under two licenses:
++ 1) GNU Lesser General Public License (GNU LGPL)
++ 2) Common Public License (CPL)
++ It means that you can select one of these two licenses and
++ follow rules of that license.
++
++ SPECIAL EXCEPTION:
++ Igor Pavlov, as the author of this code, expressly permits you to
++ statically or dynamically link your code (or bind by name) to the
++ interfaces of this file without subjecting your linked code to the
++ terms of the CPL or GNU LGPL. Any modifications or additions
++ to this file, however, are subject to the LGPL or CPL terms.
++*/
++
++#include <linux/LzmaDecode.h>
++
++#ifndef Byte
++#define Byte unsigned char
++#endif
++
++#define kNumTopBits 24
++#define kTopValue ((UInt32)1 << kNumTopBits)
++
++#define kNumBitModelTotalBits 11
++#define kBitModelTotal (1 << kNumBitModelTotalBits)
++#define kNumMoveBits 5
++
++typedef struct _CRangeDecoder
++{
++ Byte *Buffer;
++ Byte *BufferLim;
++ UInt32 Range;
++ UInt32 Code;
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *InCallback;
++ int Result;
++ #endif
++ int ExtraBytes;
++} CRangeDecoder;
++
++Byte RangeDecoderReadByte(CRangeDecoder *rd)
++{
++ if (rd->Buffer == rd->BufferLim)
++ {
++ #ifdef _LZMA_IN_CB
++ UInt32 size;
++ rd->Result = rd->InCallback->Read(rd->InCallback, &rd->Buffer, &size);
++ rd->BufferLim = rd->Buffer + size;
++ if (size == 0)
++ #endif
++ {
++ rd->ExtraBytes = 1;
++ return 0xFF;
++ }
++ }
++ return (*rd->Buffer++);
++}
++
++/* #define ReadByte (*rd->Buffer++) */
++#define ReadByte (RangeDecoderReadByte(rd))
++
++void RangeDecoderInit(CRangeDecoder *rd,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback
++ #else
++ Byte *stream, UInt32 bufferSize
++ #endif
++ )
++{
++ int i;
++ #ifdef _LZMA_IN_CB
++ rd->InCallback = inCallback;
++ rd->Buffer = rd->BufferLim = 0;
++ #else
++ rd->Buffer = stream;
++ rd->BufferLim = stream + bufferSize;
++ #endif
++ rd->ExtraBytes = 0;
++ rd->Code = 0;
++ rd->Range = (0xFFFFFFFF);
++ for(i = 0; i < 5; i++)
++ rd->Code = (rd->Code << 8) | ReadByte;
++}
++
++#define RC_INIT_VAR UInt32 range = rd->Range; UInt32 code = rd->Code;
++#define RC_FLUSH_VAR rd->Range = range; rd->Code = code;
++#define RC_NORMALIZE if (range < kTopValue) { range <<= 8; code = (code << 8) | ReadByte; }
++
++UInt32 RangeDecoderDecodeDirectBits(CRangeDecoder *rd, int numTotalBits)
++{
++ RC_INIT_VAR
++ UInt32 result = 0;
++ int i;
++ for (i = numTotalBits; i > 0; i--)
++ {
++ /* UInt32 t; */
++ range >>= 1;
++
++ result <<= 1;
++ if (code >= range)
++ {
++ code -= range;
++ result |= 1;
++ }
++ /*
++ t = (code - range) >> 31;
++ t &= 1;
++ code -= range & (t - 1);
++ result = (result + result) | (1 - t);
++ */
++ RC_NORMALIZE
++ }
++ RC_FLUSH_VAR
++ return result;
++}
++
++int RangeDecoderBitDecode(CProb *prob, CRangeDecoder *rd)
++{
++ UInt32 bound = (rd->Range >> kNumBitModelTotalBits) * *prob;
++ if (rd->Code < bound)
++ {
++ rd->Range = bound;
++ *prob += (kBitModelTotal - *prob) >> kNumMoveBits;
++ if (rd->Range < kTopValue)
++ {
++ rd->Code = (rd->Code << 8) | ReadByte;
++ rd->Range <<= 8;
++ }
++ return 0;
++ }
++ else
++ {
++ rd->Range -= bound;
++ rd->Code -= bound;
++ *prob -= (*prob) >> kNumMoveBits;
++ if (rd->Range < kTopValue)
++ {
++ rd->Code = (rd->Code << 8) | ReadByte;
++ rd->Range <<= 8;
++ }
++ return 1;
++ }
++}
++
++#define RC_GET_BIT2(prob, mi, A0, A1) \
++ UInt32 bound = (range >> kNumBitModelTotalBits) * *prob; \
++ if (code < bound) \
++ { A0; range = bound; *prob += (kBitModelTotal - *prob) >> kNumMoveBits; mi <<= 1; } \
++ else \
++ { A1; range -= bound; code -= bound; *prob -= (*prob) >> kNumMoveBits; mi = (mi + mi) + 1; } \
++ RC_NORMALIZE
++
++#define RC_GET_BIT(prob, mi) RC_GET_BIT2(prob, mi, ; , ;)
++
++int RangeDecoderBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd)
++{
++ int mi = 1;
++ int i;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ for(i = numLevels; i > 0; i--)
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + mi;
++ RC_GET_BIT(prob, mi)
++ #else
++ mi = (mi + mi) + RangeDecoderBitDecode(probs + mi, rd);
++ #endif
++ }
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return mi - (1 << numLevels);
++}
++
++int RangeDecoderReverseBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd)
++{
++ int mi = 1;
++ int i;
++ int symbol = 0;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ for(i = 0; i < numLevels; i++)
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + mi;
++ RC_GET_BIT2(prob, mi, ; , symbol |= (1 << i))
++ #else
++ int bit = RangeDecoderBitDecode(probs + mi, rd);
++ mi = mi + mi + bit;
++ symbol |= (bit << i);
++ #endif
++ }
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return symbol;
++}
++
++Byte LzmaLiteralDecode(CProb *probs, CRangeDecoder *rd)
++{
++ int symbol = 1;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ do
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + symbol;
++ RC_GET_BIT(prob, symbol)
++ #else
++ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd);
++ #endif
++ }
++ while (symbol < 0x100);
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return symbol;
++}
++
++Byte LzmaLiteralDecodeMatch(CProb *probs, CRangeDecoder *rd, Byte matchByte)
++{
++ int symbol = 1;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ do
++ {
++ int bit;
++ int matchBit = (matchByte >> 7) & 1;
++ matchByte <<= 1;
++ #ifdef _LZMA_LOC_OPT
++ {
++ CProb *prob = probs + ((1 + matchBit) << 8) + symbol;
++ RC_GET_BIT2(prob, symbol, bit = 0, bit = 1)
++ }
++ #else
++ bit = RangeDecoderBitDecode(probs + ((1 + matchBit) << 8) + symbol, rd);
++ symbol = (symbol << 1) | bit;
++ #endif
++ if (matchBit != bit)
++ {
++ while (symbol < 0x100)
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + symbol;
++ RC_GET_BIT(prob, symbol)
++ #else
++ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd);
++ #endif
++ }
++ break;
++ }
++ }
++ while (symbol < 0x100);
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return symbol;
++}
++
++#define kNumPosBitsMax 4
++#define kNumPosStatesMax (1 << kNumPosBitsMax)
++
++#define kLenNumLowBits 3
++#define kLenNumLowSymbols (1 << kLenNumLowBits)
++#define kLenNumMidBits 3
++#define kLenNumMidSymbols (1 << kLenNumMidBits)
++#define kLenNumHighBits 8
++#define kLenNumHighSymbols (1 << kLenNumHighBits)
++
++#define LenChoice 0
++#define LenChoice2 (LenChoice + 1)
++#define LenLow (LenChoice2 + 1)
++#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
++#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
++#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
++
++int LzmaLenDecode(CProb *p, CRangeDecoder *rd, int posState)
++{
++ if(RangeDecoderBitDecode(p + LenChoice, rd) == 0)
++ return RangeDecoderBitTreeDecode(p + LenLow +
++ (posState << kLenNumLowBits), kLenNumLowBits, rd);
++ if(RangeDecoderBitDecode(p + LenChoice2, rd) == 0)
++ return kLenNumLowSymbols + RangeDecoderBitTreeDecode(p + LenMid +
++ (posState << kLenNumMidBits), kLenNumMidBits, rd);
++ return kLenNumLowSymbols + kLenNumMidSymbols +
++ RangeDecoderBitTreeDecode(p + LenHigh, kLenNumHighBits, rd);
++}
++
++#define kNumStates 12
++
++#define kStartPosModelIndex 4
++#define kEndPosModelIndex 14
++#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
++
++#define kNumPosSlotBits 6
++#define kNumLenToPosStates 4
++
++#define kNumAlignBits 4
++#define kAlignTableSize (1 << kNumAlignBits)
++
++#define kMatchMinLen 2
++
++#define IsMatch 0
++#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
++#define IsRepG0 (IsRep + kNumStates)
++#define IsRepG1 (IsRepG0 + kNumStates)
++#define IsRepG2 (IsRepG1 + kNumStates)
++#define IsRep0Long (IsRepG2 + kNumStates)
++#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
++#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
++#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
++#define LenCoder (Align + kAlignTableSize)
++#define RepLenCoder (LenCoder + kNumLenProbs)
++#define Literal (RepLenCoder + kNumLenProbs)
++
++#if Literal != LZMA_BASE_SIZE
++StopCompilingDueBUG
++#endif
++
++#ifdef _LZMA_OUT_READ
++
++typedef struct _LzmaVarState
++{
++ CRangeDecoder RangeDecoder;
++ Byte *Dictionary;
++ UInt32 DictionarySize;
++ UInt32 DictionaryPos;
++ UInt32 GlobalPos;
++ UInt32 Reps[4];
++ int lc;
++ int lp;
++ int pb;
++ int State;
++ int PreviousIsMatch;
++ int RemainLen;
++} LzmaVarState;
++
++int LzmaDecoderInit(
++ unsigned char *buffer, UInt32 bufferSize,
++ int lc, int lp, int pb,
++ unsigned char *dictionary, UInt32 dictionarySize,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback
++ #else
++ unsigned char *inStream, UInt32 inSize
++ #endif
++ )
++{
++ LzmaVarState *vs = (LzmaVarState *)buffer;
++ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
++ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
++ UInt32 i;
++ if (bufferSize < numProbs * sizeof(CProb) + sizeof(LzmaVarState))
++ return LZMA_RESULT_NOT_ENOUGH_MEM;
++ vs->Dictionary = dictionary;
++ vs->DictionarySize = dictionarySize;
++ vs->DictionaryPos = 0;
++ vs->GlobalPos = 0;
++ vs->Reps[0] = vs->Reps[1] = vs->Reps[2] = vs->Reps[3] = 1;
++ vs->lc = lc;
++ vs->lp = lp;
++ vs->pb = pb;
++ vs->State = 0;
++ vs->PreviousIsMatch = 0;
++ vs->RemainLen = 0;
++ dictionary[dictionarySize - 1] = 0;
++ for (i = 0; i < numProbs; i++)
++ p[i] = kBitModelTotal >> 1;
++ RangeDecoderInit(&vs->RangeDecoder,
++ #ifdef _LZMA_IN_CB
++ inCallback
++ #else
++ inStream, inSize
++ #endif
++ );
++ return LZMA_RESULT_OK;
++}
++
++int LzmaDecode(unsigned char *buffer,
++ unsigned char *outStream, UInt32 outSize,
++ UInt32 *outSizeProcessed)
++{
++ LzmaVarState *vs = (LzmaVarState *)buffer;
++ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
++ CRangeDecoder rd = vs->RangeDecoder;
++ int state = vs->State;
++ int previousIsMatch = vs->PreviousIsMatch;
++ Byte previousByte;
++ UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
++ UInt32 nowPos = 0;
++ UInt32 posStateMask = (1 << (vs->pb)) - 1;
++ UInt32 literalPosMask = (1 << (vs->lp)) - 1;
++ int lc = vs->lc;
++ int len = vs->RemainLen;
++ UInt32 globalPos = vs->GlobalPos;
++
++ Byte *dictionary = vs->Dictionary;
++ UInt32 dictionarySize = vs->DictionarySize;
++ UInt32 dictionaryPos = vs->DictionaryPos;
++
++ if (len == -1)
++ {
++ *outSizeProcessed = 0;
++ return LZMA_RESULT_OK;
++ }
++
++ while(len > 0 && nowPos < outSize)
++ {
++ UInt32 pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos];
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ len--;
++ }
++ if (dictionaryPos == 0)
++ previousByte = dictionary[dictionarySize - 1];
++ else
++ previousByte = dictionary[dictionaryPos - 1];
++#else
++
++int LzmaDecode(
++ Byte *buffer, UInt32 bufferSize,
++ int lc, int lp, int pb,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback,
++ #else
++ unsigned char *inStream, UInt32 inSize,
++ #endif
++ unsigned char *outStream, UInt32 outSize,
++ UInt32 *outSizeProcessed)
++{
++ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
++ CProb *p = (CProb *)buffer;
++ CRangeDecoder rd;
++ UInt32 i;
++ int state = 0;
++ int previousIsMatch = 0;
++ Byte previousByte = 0;
++ UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
++ UInt32 nowPos = 0;
++ UInt32 posStateMask = (1 << pb) - 1;
++ UInt32 literalPosMask = (1 << lp) - 1;
++ int len = 0;
++ if (bufferSize < numProbs * sizeof(CProb))
++ return LZMA_RESULT_NOT_ENOUGH_MEM;
++ for (i = 0; i < numProbs; i++)
++ p[i] = kBitModelTotal >> 1;
++ RangeDecoderInit(&rd,
++ #ifdef _LZMA_IN_CB
++ inCallback
++ #else
++ inStream, inSize
++ #endif
++ );
++#endif
++
++ *outSizeProcessed = 0;
++ while(nowPos < outSize)
++ {
++ int posState = (int)(
++ (nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ & posStateMask);
++ #ifdef _LZMA_IN_CB
++ if (rd.Result != LZMA_RESULT_OK)
++ return rd.Result;
++ #endif
++ if (rd.ExtraBytes != 0)
++ return LZMA_RESULT_DATA_ERROR;
++ if (RangeDecoderBitDecode(p + IsMatch + (state << kNumPosBitsMax) + posState, &rd) == 0)
++ {
++ CProb *probs = p + Literal + (LZMA_LIT_SIZE *
++ (((
++ (nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ & literalPosMask) << lc) + (previousByte >> (8 - lc))));
++
++ if (state < 4) state = 0;
++ else if (state < 10) state -= 3;
++ else state -= 6;
++ if (previousIsMatch)
++ {
++ Byte matchByte;
++ #ifdef _LZMA_OUT_READ
++ UInt32 pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ matchByte = dictionary[pos];
++ #else
++ matchByte = outStream[nowPos - rep0];
++ #endif
++ previousByte = LzmaLiteralDecodeMatch(probs, &rd, matchByte);
++ previousIsMatch = 0;
++ }
++ else
++ previousByte = LzmaLiteralDecode(probs, &rd);
++ outStream[nowPos++] = previousByte;
++ #ifdef _LZMA_OUT_READ
++ dictionary[dictionaryPos] = previousByte;
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ #endif
++ }
++ else
++ {
++ previousIsMatch = 1;
++ if (RangeDecoderBitDecode(p + IsRep + state, &rd) == 1)
++ {
++ if (RangeDecoderBitDecode(p + IsRepG0 + state, &rd) == 0)
++ {
++ if (RangeDecoderBitDecode(p + IsRep0Long + (state << kNumPosBitsMax) + posState, &rd) == 0)
++ {
++ #ifdef _LZMA_OUT_READ
++ UInt32 pos;
++ #endif
++ if (
++ (nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ == 0)
++ return LZMA_RESULT_DATA_ERROR;
++ state = state < 7 ? 9 : 11;
++ #ifdef _LZMA_OUT_READ
++ pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ previousByte = dictionary[pos];
++ dictionary[dictionaryPos] = previousByte;
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ #else
++ previousByte = outStream[nowPos - rep0];
++ #endif
++ outStream[nowPos++] = previousByte;
++ continue;
++ }
++ }
++ else
++ {
++ UInt32 distance;
++ if(RangeDecoderBitDecode(p + IsRepG1 + state, &rd) == 0)
++ distance = rep1;
++ else
++ {
++ if(RangeDecoderBitDecode(p + IsRepG2 + state, &rd) == 0)
++ distance = rep2;
++ else
++ {
++ distance = rep3;
++ rep3 = rep2;
++ }
++ rep2 = rep1;
++ }
++ rep1 = rep0;
++ rep0 = distance;
++ }
++ len = LzmaLenDecode(p + RepLenCoder, &rd, posState);
++ state = state < 7 ? 8 : 11;
++ }
++ else
++ {
++ int posSlot;
++ rep3 = rep2;
++ rep2 = rep1;
++ rep1 = rep0;
++ state = state < 7 ? 7 : 10;
++ len = LzmaLenDecode(p + LenCoder, &rd, posState);
++ posSlot = RangeDecoderBitTreeDecode(p + PosSlot +
++ ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
++ kNumPosSlotBits), kNumPosSlotBits, &rd);
++ if (posSlot >= kStartPosModelIndex)
++ {
++ int numDirectBits = ((posSlot >> 1) - 1);
++ rep0 = ((2 | ((UInt32)posSlot & 1)) << numDirectBits);
++ if (posSlot < kEndPosModelIndex)
++ {
++ rep0 += RangeDecoderReverseBitTreeDecode(
++ p + SpecPos + rep0 - posSlot - 1, numDirectBits, &rd);
++ }
++ else
++ {
++ rep0 += RangeDecoderDecodeDirectBits(&rd,
++ numDirectBits - kNumAlignBits) << kNumAlignBits;
++ rep0 += RangeDecoderReverseBitTreeDecode(p + Align, kNumAlignBits, &rd);
++ }
++ }
++ else
++ rep0 = posSlot;
++ rep0++;
++ }
++ if (rep0 == (UInt32)(0))
++ {
++ /* it's for stream version */
++ len = -1;
++ break;
++ }
++ if (rep0 > nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ {
++ return LZMA_RESULT_DATA_ERROR;
++ }
++ len += kMatchMinLen;
++ do
++ {
++ #ifdef _LZMA_OUT_READ
++ UInt32 pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ previousByte = dictionary[pos];
++ dictionary[dictionaryPos] = previousByte;
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ #else
++ previousByte = outStream[nowPos - rep0];
++ #endif
++ outStream[nowPos++] = previousByte;
++ len--;
++ }
++ while(len > 0 && nowPos < outSize);
++ }
++ }
++
++ #ifdef _LZMA_OUT_READ
++ vs->RangeDecoder = rd;
++ vs->DictionaryPos = dictionaryPos;
++ vs->GlobalPos = globalPos + nowPos;
++ vs->Reps[0] = rep0;
++ vs->Reps[1] = rep1;
++ vs->Reps[2] = rep2;
++ vs->Reps[3] = rep3;
++ vs->State = state;
++ vs->PreviousIsMatch = previousIsMatch;
++ vs->RemainLen = len;
++ #endif
++
++ *outSizeProcessed = nowPos;
++ return LZMA_RESULT_OK;
++}
+--- linux-2.6.19.old/include/linux/LzmaDecode.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.19.dev/include/linux/LzmaDecode.h 2006-12-14 03:13:20.000000000 +0100
+@@ -0,0 +1,100 @@
++/*
++ LzmaDecode.h
++ LZMA Decoder interface
++
++ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25)
++ http://www.7-zip.org/
++
++ LZMA SDK is licensed under two licenses:
++ 1) GNU Lesser General Public License (GNU LGPL)
++ 2) Common Public License (CPL)
++ It means that you can select one of these two licenses and
++ follow rules of that license.
++
++ SPECIAL EXCEPTION:
++ Igor Pavlov, as the author of this code, expressly permits you to
++ statically or dynamically link your code (or bind by name) to the
++ interfaces of this file without subjecting your linked code to the
++ terms of the CPL or GNU LGPL. Any modifications or additions
++ to this file, however, are subject to the LGPL or CPL terms.
++*/
++
++#ifndef __LZMADECODE_H
++#define __LZMADECODE_H
++
++/* #define _LZMA_IN_CB */
++/* Use callback for input data */
++
++/* #define _LZMA_OUT_READ */
++/* Use read function for output data */
++
++/* #define _LZMA_PROB32 */
++/* It can increase speed on some 32-bit CPUs,
++ but memory usage will be doubled in that case */
++
++/* #define _LZMA_LOC_OPT */
++/* Enable local speed optimizations inside code */
++
++#ifndef UInt32
++#ifdef _LZMA_UINT32_IS_ULONG
++#define UInt32 unsigned long
++#else
++#define UInt32 unsigned int
++#endif
++#endif
++
++#ifdef _LZMA_PROB32
++#define CProb UInt32
++#else
++#define CProb unsigned short
++#endif
++
++#define LZMA_RESULT_OK 0
++#define LZMA_RESULT_DATA_ERROR 1
++#define LZMA_RESULT_NOT_ENOUGH_MEM 2
++
++#ifdef _LZMA_IN_CB
++typedef struct _ILzmaInCallback
++{
++ int (*Read)(void *object, unsigned char **buffer, UInt32 *bufferSize);
++} ILzmaInCallback;
++#endif
++
++#define LZMA_BASE_SIZE 1846
++#define LZMA_LIT_SIZE 768
++
++/*
++bufferSize = (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp)))* sizeof(CProb)
++bufferSize += 100 in case of _LZMA_OUT_READ
++by default CProb is unsigned short,
++but if specify _LZMA_PROB_32, CProb will be UInt32(unsigned int)
++*/
++
++#ifdef _LZMA_OUT_READ
++int LzmaDecoderInit(
++ unsigned char *buffer, UInt32 bufferSize,
++ int lc, int lp, int pb,
++ unsigned char *dictionary, UInt32 dictionarySize,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback
++ #else
++ unsigned char *inStream, UInt32 inSize
++ #endif
++);
++#endif
++
++int LzmaDecode(
++ unsigned char *buffer,
++ #ifndef _LZMA_OUT_READ
++ UInt32 bufferSize,
++ int lc, int lp, int pb,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback,
++ #else
++ unsigned char *inStream, UInt32 inSize,
++ #endif
++ #endif
++ unsigned char *outStream, UInt32 outSize,
++ UInt32 *outSizeProcessed);
++
++#endif
+
+++ /dev/null
-diff -urN linux-2.6.19.old/fs/squashfs/inode.c linux-2.6.19.dev/fs/squashfs/inode.c
---- linux-2.6.19.old/fs/squashfs/inode.c 2006-12-14 03:13:20.000000000 +0100
-+++ linux-2.6.19.dev/fs/squashfs/inode.c 2006-12-14 03:13:20.000000000 +0100
-@@ -4,6 +4,9 @@
- * Copyright (c) 2002, 2003, 2004, 2005, 2006
- * Phillip Lougher <phillip@lougher.org.uk>
- *
-+ * LZMA decompressor support added by Oleg I. Vdovikin
-+ * Copyright (c) 2005 Oleg I.Vdovikin <oleg@cs.msu.su>
-+ *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2,
-@@ -21,6 +24,7 @@
- * inode.c
- */
-
-+#define SQUASHFS_LZMA
- #include <linux/types.h>
- #include <linux/squashfs_fs.h>
- #include <linux/module.h>
-@@ -44,6 +48,19 @@
-
- #include "squashfs.h"
-
-+#ifdef SQUASHFS_LZMA
-+#include "LzmaDecode.h"
-+
-+/* default LZMA settings, should be in sync with mksquashfs */
-+#define LZMA_LC 3
-+#define LZMA_LP 0
-+#define LZMA_PB 2
-+
-+#define LZMA_WORKSPACE_SIZE ((LZMA_BASE_SIZE + \
-+ (LZMA_LIT_SIZE << (LZMA_LC + LZMA_LP))) * sizeof(CProb))
-+
-+#endif
-+
- static void squashfs_put_super(struct super_block *);
- static int squashfs_statfs(struct dentry *, struct kstatfs *);
- static int squashfs_symlink_readpage(struct file *file, struct page *page);
-@@ -64,7 +81,11 @@
- const char *, void *, struct vfsmount *);
-
-
-+#ifdef SQUASHFS_LZMA
-+static unsigned char lzma_workspace[LZMA_WORKSPACE_SIZE];
-+#else
- static z_stream stream;
-+#endif
-
- static struct file_system_type squashfs_fs_type = {
- .owner = THIS_MODULE,
-@@ -249,6 +270,15 @@
- if (compressed) {
- int zlib_err;
-
-+#ifdef SQUASHFS_LZMA
-+ if ((zlib_err = LzmaDecode(lzma_workspace,
-+ LZMA_WORKSPACE_SIZE, LZMA_LC, LZMA_LP, LZMA_PB,
-+ c_buffer, c_byte, buffer, msblk->read_size, &bytes)) != LZMA_RESULT_OK)
-+ {
-+ ERROR("lzma returned unexpected result 0x%x\n", zlib_err);
-+ bytes = 0;
-+ }
-+#else
- stream.next_in = c_buffer;
- stream.avail_in = c_byte;
- stream.next_out = buffer;
-@@ -263,7 +293,7 @@
- bytes = 0;
- } else
- bytes = stream.total_out;
--
-+#endif
- up(&msblk->read_data_mutex);
- }
-
-@@ -2045,15 +2075,19 @@
- printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) "
- "Phillip Lougher\n");
-
-+#ifndef SQUASHFS_LZMA
- if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) {
- ERROR("Failed to allocate zlib workspace\n");
- destroy_inodecache();
- err = -ENOMEM;
- goto out;
- }
-+#endif
-
- if ((err = register_filesystem(&squashfs_fs_type))) {
-+#ifndef SQUASHFS_LZMA
- vfree(stream.workspace);
-+#endif
- destroy_inodecache();
- }
-
-@@ -2064,7 +2098,9 @@
-
- static void __exit exit_squashfs_fs(void)
- {
-+#ifndef SQUASHFS_LZMA
- vfree(stream.workspace);
-+#endif
- unregister_filesystem(&squashfs_fs_type);
- destroy_inodecache();
- }
-diff -urN linux-2.6.19.old/fs/squashfs/LzmaDecode.c linux-2.6.19.dev/fs/squashfs/LzmaDecode.c
---- linux-2.6.19.old/fs/squashfs/LzmaDecode.c 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.19.dev/fs/squashfs/LzmaDecode.c 2006-12-14 03:13:20.000000000 +0100
-@@ -0,0 +1,663 @@
-+/*
-+ LzmaDecode.c
-+ LZMA Decoder
-+
-+ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25)
-+ http://www.7-zip.org/
-+
-+ LZMA SDK is licensed under two licenses:
-+ 1) GNU Lesser General Public License (GNU LGPL)
-+ 2) Common Public License (CPL)
-+ It means that you can select one of these two licenses and
-+ follow rules of that license.
-+
-+ SPECIAL EXCEPTION:
-+ Igor Pavlov, as the author of this code, expressly permits you to
-+ statically or dynamically link your code (or bind by name) to the
-+ interfaces of this file without subjecting your linked code to the
-+ terms of the CPL or GNU LGPL. Any modifications or additions
-+ to this file, however, are subject to the LGPL or CPL terms.
-+*/
-+
-+#include "LzmaDecode.h"
-+
-+#ifndef Byte
-+#define Byte unsigned char
-+#endif
-+
-+#define kNumTopBits 24
-+#define kTopValue ((UInt32)1 << kNumTopBits)
-+
-+#define kNumBitModelTotalBits 11
-+#define kBitModelTotal (1 << kNumBitModelTotalBits)
-+#define kNumMoveBits 5
-+
-+typedef struct _CRangeDecoder
-+{
-+ Byte *Buffer;
-+ Byte *BufferLim;
-+ UInt32 Range;
-+ UInt32 Code;
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *InCallback;
-+ int Result;
-+ #endif
-+ int ExtraBytes;
-+} CRangeDecoder;
-+
-+Byte RangeDecoderReadByte(CRangeDecoder *rd)
-+{
-+ if (rd->Buffer == rd->BufferLim)
-+ {
-+ #ifdef _LZMA_IN_CB
-+ UInt32 size;
-+ rd->Result = rd->InCallback->Read(rd->InCallback, &rd->Buffer, &size);
-+ rd->BufferLim = rd->Buffer + size;
-+ if (size == 0)
-+ #endif
-+ {
-+ rd->ExtraBytes = 1;
-+ return 0xFF;
-+ }
-+ }
-+ return (*rd->Buffer++);
-+}
-+
-+/* #define ReadByte (*rd->Buffer++) */
-+#define ReadByte (RangeDecoderReadByte(rd))
-+
-+void RangeDecoderInit(CRangeDecoder *rd,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *inCallback
-+ #else
-+ Byte *stream, UInt32 bufferSize
-+ #endif
-+ )
-+{
-+ int i;
-+ #ifdef _LZMA_IN_CB
-+ rd->InCallback = inCallback;
-+ rd->Buffer = rd->BufferLim = 0;
-+ #else
-+ rd->Buffer = stream;
-+ rd->BufferLim = stream + bufferSize;
-+ #endif
-+ rd->ExtraBytes = 0;
-+ rd->Code = 0;
-+ rd->Range = (0xFFFFFFFF);
-+ for(i = 0; i < 5; i++)
-+ rd->Code = (rd->Code << 8) | ReadByte;
-+}
-+
-+#define RC_INIT_VAR UInt32 range = rd->Range; UInt32 code = rd->Code;
-+#define RC_FLUSH_VAR rd->Range = range; rd->Code = code;
-+#define RC_NORMALIZE if (range < kTopValue) { range <<= 8; code = (code << 8) | ReadByte; }
-+
-+UInt32 RangeDecoderDecodeDirectBits(CRangeDecoder *rd, int numTotalBits)
-+{
-+ RC_INIT_VAR
-+ UInt32 result = 0;
-+ int i;
-+ for (i = numTotalBits; i > 0; i--)
-+ {
-+ /* UInt32 t; */
-+ range >>= 1;
-+
-+ result <<= 1;
-+ if (code >= range)
-+ {
-+ code -= range;
-+ result |= 1;
-+ }
-+ /*
-+ t = (code - range) >> 31;
-+ t &= 1;
-+ code -= range & (t - 1);
-+ result = (result + result) | (1 - t);
-+ */
-+ RC_NORMALIZE
-+ }
-+ RC_FLUSH_VAR
-+ return result;
-+}
-+
-+int RangeDecoderBitDecode(CProb *prob, CRangeDecoder *rd)
-+{
-+ UInt32 bound = (rd->Range >> kNumBitModelTotalBits) * *prob;
-+ if (rd->Code < bound)
-+ {
-+ rd->Range = bound;
-+ *prob += (kBitModelTotal - *prob) >> kNumMoveBits;
-+ if (rd->Range < kTopValue)
-+ {
-+ rd->Code = (rd->Code << 8) | ReadByte;
-+ rd->Range <<= 8;
-+ }
-+ return 0;
-+ }
-+ else
-+ {
-+ rd->Range -= bound;
-+ rd->Code -= bound;
-+ *prob -= (*prob) >> kNumMoveBits;
-+ if (rd->Range < kTopValue)
-+ {
-+ rd->Code = (rd->Code << 8) | ReadByte;
-+ rd->Range <<= 8;
-+ }
-+ return 1;
-+ }
-+}
-+
-+#define RC_GET_BIT2(prob, mi, A0, A1) \
-+ UInt32 bound = (range >> kNumBitModelTotalBits) * *prob; \
-+ if (code < bound) \
-+ { A0; range = bound; *prob += (kBitModelTotal - *prob) >> kNumMoveBits; mi <<= 1; } \
-+ else \
-+ { A1; range -= bound; code -= bound; *prob -= (*prob) >> kNumMoveBits; mi = (mi + mi) + 1; } \
-+ RC_NORMALIZE
-+
-+#define RC_GET_BIT(prob, mi) RC_GET_BIT2(prob, mi, ; , ;)
-+
-+int RangeDecoderBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd)
-+{
-+ int mi = 1;
-+ int i;
-+ #ifdef _LZMA_LOC_OPT
-+ RC_INIT_VAR
-+ #endif
-+ for(i = numLevels; i > 0; i--)
-+ {
-+ #ifdef _LZMA_LOC_OPT
-+ CProb *prob = probs + mi;
-+ RC_GET_BIT(prob, mi)
-+ #else
-+ mi = (mi + mi) + RangeDecoderBitDecode(probs + mi, rd);
-+ #endif
-+ }
-+ #ifdef _LZMA_LOC_OPT
-+ RC_FLUSH_VAR
-+ #endif
-+ return mi - (1 << numLevels);
-+}
-+
-+int RangeDecoderReverseBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd)
-+{
-+ int mi = 1;
-+ int i;
-+ int symbol = 0;
-+ #ifdef _LZMA_LOC_OPT
-+ RC_INIT_VAR
-+ #endif
-+ for(i = 0; i < numLevels; i++)
-+ {
-+ #ifdef _LZMA_LOC_OPT
-+ CProb *prob = probs + mi;
-+ RC_GET_BIT2(prob, mi, ; , symbol |= (1 << i))
-+ #else
-+ int bit = RangeDecoderBitDecode(probs + mi, rd);
-+ mi = mi + mi + bit;
-+ symbol |= (bit << i);
-+ #endif
-+ }
-+ #ifdef _LZMA_LOC_OPT
-+ RC_FLUSH_VAR
-+ #endif
-+ return symbol;
-+}
-+
-+Byte LzmaLiteralDecode(CProb *probs, CRangeDecoder *rd)
-+{
-+ int symbol = 1;
-+ #ifdef _LZMA_LOC_OPT
-+ RC_INIT_VAR
-+ #endif
-+ do
-+ {
-+ #ifdef _LZMA_LOC_OPT
-+ CProb *prob = probs + symbol;
-+ RC_GET_BIT(prob, symbol)
-+ #else
-+ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd);
-+ #endif
-+ }
-+ while (symbol < 0x100);
-+ #ifdef _LZMA_LOC_OPT
-+ RC_FLUSH_VAR
-+ #endif
-+ return symbol;
-+}
-+
-+Byte LzmaLiteralDecodeMatch(CProb *probs, CRangeDecoder *rd, Byte matchByte)
-+{
-+ int symbol = 1;
-+ #ifdef _LZMA_LOC_OPT
-+ RC_INIT_VAR
-+ #endif
-+ do
-+ {
-+ int bit;
-+ int matchBit = (matchByte >> 7) & 1;
-+ matchByte <<= 1;
-+ #ifdef _LZMA_LOC_OPT
-+ {
-+ CProb *prob = probs + ((1 + matchBit) << 8) + symbol;
-+ RC_GET_BIT2(prob, symbol, bit = 0, bit = 1)
-+ }
-+ #else
-+ bit = RangeDecoderBitDecode(probs + ((1 + matchBit) << 8) + symbol, rd);
-+ symbol = (symbol << 1) | bit;
-+ #endif
-+ if (matchBit != bit)
-+ {
-+ while (symbol < 0x100)
-+ {
-+ #ifdef _LZMA_LOC_OPT
-+ CProb *prob = probs + symbol;
-+ RC_GET_BIT(prob, symbol)
-+ #else
-+ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd);
-+ #endif
-+ }
-+ break;
-+ }
-+ }
-+ while (symbol < 0x100);
-+ #ifdef _LZMA_LOC_OPT
-+ RC_FLUSH_VAR
-+ #endif
-+ return symbol;
-+}
-+
-+#define kNumPosBitsMax 4
-+#define kNumPosStatesMax (1 << kNumPosBitsMax)
-+
-+#define kLenNumLowBits 3
-+#define kLenNumLowSymbols (1 << kLenNumLowBits)
-+#define kLenNumMidBits 3
-+#define kLenNumMidSymbols (1 << kLenNumMidBits)
-+#define kLenNumHighBits 8
-+#define kLenNumHighSymbols (1 << kLenNumHighBits)
-+
-+#define LenChoice 0
-+#define LenChoice2 (LenChoice + 1)
-+#define LenLow (LenChoice2 + 1)
-+#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
-+#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
-+#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
-+
-+int LzmaLenDecode(CProb *p, CRangeDecoder *rd, int posState)
-+{
-+ if(RangeDecoderBitDecode(p + LenChoice, rd) == 0)
-+ return RangeDecoderBitTreeDecode(p + LenLow +
-+ (posState << kLenNumLowBits), kLenNumLowBits, rd);
-+ if(RangeDecoderBitDecode(p + LenChoice2, rd) == 0)
-+ return kLenNumLowSymbols + RangeDecoderBitTreeDecode(p + LenMid +
-+ (posState << kLenNumMidBits), kLenNumMidBits, rd);
-+ return kLenNumLowSymbols + kLenNumMidSymbols +
-+ RangeDecoderBitTreeDecode(p + LenHigh, kLenNumHighBits, rd);
-+}
-+
-+#define kNumStates 12
-+
-+#define kStartPosModelIndex 4
-+#define kEndPosModelIndex 14
-+#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
-+
-+#define kNumPosSlotBits 6
-+#define kNumLenToPosStates 4
-+
-+#define kNumAlignBits 4
-+#define kAlignTableSize (1 << kNumAlignBits)
-+
-+#define kMatchMinLen 2
-+
-+#define IsMatch 0
-+#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
-+#define IsRepG0 (IsRep + kNumStates)
-+#define IsRepG1 (IsRepG0 + kNumStates)
-+#define IsRepG2 (IsRepG1 + kNumStates)
-+#define IsRep0Long (IsRepG2 + kNumStates)
-+#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
-+#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
-+#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
-+#define LenCoder (Align + kAlignTableSize)
-+#define RepLenCoder (LenCoder + kNumLenProbs)
-+#define Literal (RepLenCoder + kNumLenProbs)
-+
-+#if Literal != LZMA_BASE_SIZE
-+StopCompilingDueBUG
-+#endif
-+
-+#ifdef _LZMA_OUT_READ
-+
-+typedef struct _LzmaVarState
-+{
-+ CRangeDecoder RangeDecoder;
-+ Byte *Dictionary;
-+ UInt32 DictionarySize;
-+ UInt32 DictionaryPos;
-+ UInt32 GlobalPos;
-+ UInt32 Reps[4];
-+ int lc;
-+ int lp;
-+ int pb;
-+ int State;
-+ int PreviousIsMatch;
-+ int RemainLen;
-+} LzmaVarState;
-+
-+int LzmaDecoderInit(
-+ unsigned char *buffer, UInt32 bufferSize,
-+ int lc, int lp, int pb,
-+ unsigned char *dictionary, UInt32 dictionarySize,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *inCallback
-+ #else
-+ unsigned char *inStream, UInt32 inSize
-+ #endif
-+ )
-+{
-+ LzmaVarState *vs = (LzmaVarState *)buffer;
-+ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
-+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
-+ UInt32 i;
-+ if (bufferSize < numProbs * sizeof(CProb) + sizeof(LzmaVarState))
-+ return LZMA_RESULT_NOT_ENOUGH_MEM;
-+ vs->Dictionary = dictionary;
-+ vs->DictionarySize = dictionarySize;
-+ vs->DictionaryPos = 0;
-+ vs->GlobalPos = 0;
-+ vs->Reps[0] = vs->Reps[1] = vs->Reps[2] = vs->Reps[3] = 1;
-+ vs->lc = lc;
-+ vs->lp = lp;
-+ vs->pb = pb;
-+ vs->State = 0;
-+ vs->PreviousIsMatch = 0;
-+ vs->RemainLen = 0;
-+ dictionary[dictionarySize - 1] = 0;
-+ for (i = 0; i < numProbs; i++)
-+ p[i] = kBitModelTotal >> 1;
-+ RangeDecoderInit(&vs->RangeDecoder,
-+ #ifdef _LZMA_IN_CB
-+ inCallback
-+ #else
-+ inStream, inSize
-+ #endif
-+ );
-+ return LZMA_RESULT_OK;
-+}
-+
-+int LzmaDecode(unsigned char *buffer,
-+ unsigned char *outStream, UInt32 outSize,
-+ UInt32 *outSizeProcessed)
-+{
-+ LzmaVarState *vs = (LzmaVarState *)buffer;
-+ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
-+ CRangeDecoder rd = vs->RangeDecoder;
-+ int state = vs->State;
-+ int previousIsMatch = vs->PreviousIsMatch;
-+ Byte previousByte;
-+ UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
-+ UInt32 nowPos = 0;
-+ UInt32 posStateMask = (1 << (vs->pb)) - 1;
-+ UInt32 literalPosMask = (1 << (vs->lp)) - 1;
-+ int lc = vs->lc;
-+ int len = vs->RemainLen;
-+ UInt32 globalPos = vs->GlobalPos;
-+
-+ Byte *dictionary = vs->Dictionary;
-+ UInt32 dictionarySize = vs->DictionarySize;
-+ UInt32 dictionaryPos = vs->DictionaryPos;
-+
-+ if (len == -1)
-+ {
-+ *outSizeProcessed = 0;
-+ return LZMA_RESULT_OK;
-+ }
-+
-+ while(len > 0 && nowPos < outSize)
-+ {
-+ UInt32 pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos];
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ len--;
-+ }
-+ if (dictionaryPos == 0)
-+ previousByte = dictionary[dictionarySize - 1];
-+ else
-+ previousByte = dictionary[dictionaryPos - 1];
-+#else
-+
-+int LzmaDecode(
-+ Byte *buffer, UInt32 bufferSize,
-+ int lc, int lp, int pb,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *inCallback,
-+ #else
-+ unsigned char *inStream, UInt32 inSize,
-+ #endif
-+ unsigned char *outStream, UInt32 outSize,
-+ UInt32 *outSizeProcessed)
-+{
-+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
-+ CProb *p = (CProb *)buffer;
-+ CRangeDecoder rd;
-+ UInt32 i;
-+ int state = 0;
-+ int previousIsMatch = 0;
-+ Byte previousByte = 0;
-+ UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
-+ UInt32 nowPos = 0;
-+ UInt32 posStateMask = (1 << pb) - 1;
-+ UInt32 literalPosMask = (1 << lp) - 1;
-+ int len = 0;
-+ if (bufferSize < numProbs * sizeof(CProb))
-+ return LZMA_RESULT_NOT_ENOUGH_MEM;
-+ for (i = 0; i < numProbs; i++)
-+ p[i] = kBitModelTotal >> 1;
-+ RangeDecoderInit(&rd,
-+ #ifdef _LZMA_IN_CB
-+ inCallback
-+ #else
-+ inStream, inSize
-+ #endif
-+ );
-+#endif
-+
-+ *outSizeProcessed = 0;
-+ while(nowPos < outSize)
-+ {
-+ int posState = (int)(
-+ (nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ & posStateMask);
-+ #ifdef _LZMA_IN_CB
-+ if (rd.Result != LZMA_RESULT_OK)
-+ return rd.Result;
-+ #endif
-+ if (rd.ExtraBytes != 0)
-+ return LZMA_RESULT_DATA_ERROR;
-+ if (RangeDecoderBitDecode(p + IsMatch + (state << kNumPosBitsMax) + posState, &rd) == 0)
-+ {
-+ CProb *probs = p + Literal + (LZMA_LIT_SIZE *
-+ (((
-+ (nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ & literalPosMask) << lc) + (previousByte >> (8 - lc))));
-+
-+ if (state < 4) state = 0;
-+ else if (state < 10) state -= 3;
-+ else state -= 6;
-+ if (previousIsMatch)
-+ {
-+ Byte matchByte;
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ matchByte = dictionary[pos];
-+ #else
-+ matchByte = outStream[nowPos - rep0];
-+ #endif
-+ previousByte = LzmaLiteralDecodeMatch(probs, &rd, matchByte);
-+ previousIsMatch = 0;
-+ }
-+ else
-+ previousByte = LzmaLiteralDecode(probs, &rd);
-+ outStream[nowPos++] = previousByte;
-+ #ifdef _LZMA_OUT_READ
-+ dictionary[dictionaryPos] = previousByte;
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ #endif
-+ }
-+ else
-+ {
-+ previousIsMatch = 1;
-+ if (RangeDecoderBitDecode(p + IsRep + state, &rd) == 1)
-+ {
-+ if (RangeDecoderBitDecode(p + IsRepG0 + state, &rd) == 0)
-+ {
-+ if (RangeDecoderBitDecode(p + IsRep0Long + (state << kNumPosBitsMax) + posState, &rd) == 0)
-+ {
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos;
-+ #endif
-+ if (
-+ (nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ == 0)
-+ return LZMA_RESULT_DATA_ERROR;
-+ state = state < 7 ? 9 : 11;
-+ #ifdef _LZMA_OUT_READ
-+ pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ previousByte = dictionary[pos];
-+ dictionary[dictionaryPos] = previousByte;
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ #else
-+ previousByte = outStream[nowPos - rep0];
-+ #endif
-+ outStream[nowPos++] = previousByte;
-+ continue;
-+ }
-+ }
-+ else
-+ {
-+ UInt32 distance;
-+ if(RangeDecoderBitDecode(p + IsRepG1 + state, &rd) == 0)
-+ distance = rep1;
-+ else
-+ {
-+ if(RangeDecoderBitDecode(p + IsRepG2 + state, &rd) == 0)
-+ distance = rep2;
-+ else
-+ {
-+ distance = rep3;
-+ rep3 = rep2;
-+ }
-+ rep2 = rep1;
-+ }
-+ rep1 = rep0;
-+ rep0 = distance;
-+ }
-+ len = LzmaLenDecode(p + RepLenCoder, &rd, posState);
-+ state = state < 7 ? 8 : 11;
-+ }
-+ else
-+ {
-+ int posSlot;
-+ rep3 = rep2;
-+ rep2 = rep1;
-+ rep1 = rep0;
-+ state = state < 7 ? 7 : 10;
-+ len = LzmaLenDecode(p + LenCoder, &rd, posState);
-+ posSlot = RangeDecoderBitTreeDecode(p + PosSlot +
-+ ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
-+ kNumPosSlotBits), kNumPosSlotBits, &rd);
-+ if (posSlot >= kStartPosModelIndex)
-+ {
-+ int numDirectBits = ((posSlot >> 1) - 1);
-+ rep0 = ((2 | ((UInt32)posSlot & 1)) << numDirectBits);
-+ if (posSlot < kEndPosModelIndex)
-+ {
-+ rep0 += RangeDecoderReverseBitTreeDecode(
-+ p + SpecPos + rep0 - posSlot - 1, numDirectBits, &rd);
-+ }
-+ else
-+ {
-+ rep0 += RangeDecoderDecodeDirectBits(&rd,
-+ numDirectBits - kNumAlignBits) << kNumAlignBits;
-+ rep0 += RangeDecoderReverseBitTreeDecode(p + Align, kNumAlignBits, &rd);
-+ }
-+ }
-+ else
-+ rep0 = posSlot;
-+ rep0++;
-+ }
-+ if (rep0 == (UInt32)(0))
-+ {
-+ /* it's for stream version */
-+ len = -1;
-+ break;
-+ }
-+ if (rep0 > nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ {
-+ return LZMA_RESULT_DATA_ERROR;
-+ }
-+ len += kMatchMinLen;
-+ do
-+ {
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ previousByte = dictionary[pos];
-+ dictionary[dictionaryPos] = previousByte;
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ #else
-+ previousByte = outStream[nowPos - rep0];
-+ #endif
-+ outStream[nowPos++] = previousByte;
-+ len--;
-+ }
-+ while(len > 0 && nowPos < outSize);
-+ }
-+ }
-+
-+ #ifdef _LZMA_OUT_READ
-+ vs->RangeDecoder = rd;
-+ vs->DictionaryPos = dictionaryPos;
-+ vs->GlobalPos = globalPos + nowPos;
-+ vs->Reps[0] = rep0;
-+ vs->Reps[1] = rep1;
-+ vs->Reps[2] = rep2;
-+ vs->Reps[3] = rep3;
-+ vs->State = state;
-+ vs->PreviousIsMatch = previousIsMatch;
-+ vs->RemainLen = len;
-+ #endif
-+
-+ *outSizeProcessed = nowPos;
-+ return LZMA_RESULT_OK;
-+}
-diff -urN linux-2.6.19.old/fs/squashfs/LzmaDecode.h linux-2.6.19.dev/fs/squashfs/LzmaDecode.h
---- linux-2.6.19.old/fs/squashfs/LzmaDecode.h 1970-01-01 01:00:00.000000000 +0100
-+++ linux-2.6.19.dev/fs/squashfs/LzmaDecode.h 2006-12-14 03:13:20.000000000 +0100
-@@ -0,0 +1,100 @@
-+/*
-+ LzmaDecode.h
-+ LZMA Decoder interface
-+
-+ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25)
-+ http://www.7-zip.org/
-+
-+ LZMA SDK is licensed under two licenses:
-+ 1) GNU Lesser General Public License (GNU LGPL)
-+ 2) Common Public License (CPL)
-+ It means that you can select one of these two licenses and
-+ follow rules of that license.
-+
-+ SPECIAL EXCEPTION:
-+ Igor Pavlov, as the author of this code, expressly permits you to
-+ statically or dynamically link your code (or bind by name) to the
-+ interfaces of this file without subjecting your linked code to the
-+ terms of the CPL or GNU LGPL. Any modifications or additions
-+ to this file, however, are subject to the LGPL or CPL terms.
-+*/
-+
-+#ifndef __LZMADECODE_H
-+#define __LZMADECODE_H
-+
-+/* #define _LZMA_IN_CB */
-+/* Use callback for input data */
-+
-+/* #define _LZMA_OUT_READ */
-+/* Use read function for output data */
-+
-+/* #define _LZMA_PROB32 */
-+/* It can increase speed on some 32-bit CPUs,
-+ but memory usage will be doubled in that case */
-+
-+/* #define _LZMA_LOC_OPT */
-+/* Enable local speed optimizations inside code */
-+
-+#ifndef UInt32
-+#ifdef _LZMA_UINT32_IS_ULONG
-+#define UInt32 unsigned long
-+#else
-+#define UInt32 unsigned int
-+#endif
-+#endif
-+
-+#ifdef _LZMA_PROB32
-+#define CProb UInt32
-+#else
-+#define CProb unsigned short
-+#endif
-+
-+#define LZMA_RESULT_OK 0
-+#define LZMA_RESULT_DATA_ERROR 1
-+#define LZMA_RESULT_NOT_ENOUGH_MEM 2
-+
-+#ifdef _LZMA_IN_CB
-+typedef struct _ILzmaInCallback
-+{
-+ int (*Read)(void *object, unsigned char **buffer, UInt32 *bufferSize);
-+} ILzmaInCallback;
-+#endif
-+
-+#define LZMA_BASE_SIZE 1846
-+#define LZMA_LIT_SIZE 768
-+
-+/*
-+bufferSize = (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp)))* sizeof(CProb)
-+bufferSize += 100 in case of _LZMA_OUT_READ
-+by default CProb is unsigned short,
-+but if specify _LZMA_PROB_32, CProb will be UInt32(unsigned int)
-+*/
-+
-+#ifdef _LZMA_OUT_READ
-+int LzmaDecoderInit(
-+ unsigned char *buffer, UInt32 bufferSize,
-+ int lc, int lp, int pb,
-+ unsigned char *dictionary, UInt32 dictionarySize,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *inCallback
-+ #else
-+ unsigned char *inStream, UInt32 inSize
-+ #endif
-+);
-+#endif
-+
-+int LzmaDecode(
-+ unsigned char *buffer,
-+ #ifndef _LZMA_OUT_READ
-+ UInt32 bufferSize,
-+ int lc, int lp, int pb,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *inCallback,
-+ #else
-+ unsigned char *inStream, UInt32 inSize,
-+ #endif
-+ #endif
-+ unsigned char *outStream, UInt32 outSize,
-+ UInt32 *outSizeProcessed);
-+
-+#endif
-diff -urN linux-2.6.19.old/fs/squashfs/Makefile linux-2.6.19.dev/fs/squashfs/Makefile
---- linux-2.6.19.old/fs/squashfs/Makefile 2006-12-14 03:13:20.000000000 +0100
-+++ linux-2.6.19.dev/fs/squashfs/Makefile 2006-12-14 03:13:20.000000000 +0100
-@@ -5,3 +5,4 @@
- obj-$(CONFIG_SQUASHFS) += squashfs.o
- squashfs-y += inode.o
- squashfs-y += squashfs2_0.o
-+squashfs-y += LzmaDecode.o
--- /dev/null
+diff -urN linux-2.6.19.old/fs/squashfs/inode.c linux-2.6.19.dev/fs/squashfs/inode.c
+--- linux-2.6.19.old/fs/squashfs/inode.c 2006-12-14 03:13:20.000000000 +0100
++++ linux-2.6.19.dev/fs/squashfs/inode.c 2006-12-14 03:13:20.000000000 +0100
+@@ -4,6 +4,9 @@
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.org.uk>
+ *
++ * LZMA decompressor support added by Oleg I. Vdovikin
++ * Copyright (c) 2005 Oleg I.Vdovikin <oleg@cs.msu.su>
++ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+@@ -21,6 +24,7 @@
+ * inode.c
+ */
+
++#define SQUASHFS_LZMA
+ #include <linux/types.h>
+ #include <linux/squashfs_fs.h>
+ #include <linux/module.h>
+@@ -44,6 +48,19 @@
+
+ #include "squashfs.h"
+
++#ifdef SQUASHFS_LZMA
++#include <linux/LzmaDecode.h>
++
++/* default LZMA settings, should be in sync with mksquashfs */
++#define LZMA_LC 3
++#define LZMA_LP 0
++#define LZMA_PB 2
++
++#define LZMA_WORKSPACE_SIZE ((LZMA_BASE_SIZE + \
++ (LZMA_LIT_SIZE << (LZMA_LC + LZMA_LP))) * sizeof(CProb))
++
++#endif
++
+ static void squashfs_put_super(struct super_block *);
+ static int squashfs_statfs(struct dentry *, struct kstatfs *);
+ static int squashfs_symlink_readpage(struct file *file, struct page *page);
+@@ -64,7 +81,11 @@
+ const char *, void *, struct vfsmount *);
+
+
++#ifdef SQUASHFS_LZMA
++static unsigned char lzma_workspace[LZMA_WORKSPACE_SIZE];
++#else
+ static z_stream stream;
++#endif
+
+ static struct file_system_type squashfs_fs_type = {
+ .owner = THIS_MODULE,
+@@ -249,6 +270,15 @@
+ if (compressed) {
+ int zlib_err;
+
++#ifdef SQUASHFS_LZMA
++ if ((zlib_err = LzmaDecode(lzma_workspace,
++ LZMA_WORKSPACE_SIZE, LZMA_LC, LZMA_LP, LZMA_PB,
++ c_buffer, c_byte, buffer, msblk->read_size, &bytes)) != LZMA_RESULT_OK)
++ {
++ ERROR("lzma returned unexpected result 0x%x\n", zlib_err);
++ bytes = 0;
++ }
++#else
+ stream.next_in = c_buffer;
+ stream.avail_in = c_byte;
+ stream.next_out = buffer;
+@@ -263,7 +293,7 @@
+ bytes = 0;
+ } else
+ bytes = stream.total_out;
+-
++#endif
+ up(&msblk->read_data_mutex);
+ }
+
+@@ -2045,15 +2075,19 @@
+ printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) "
+ "Phillip Lougher\n");
+
++#ifndef SQUASHFS_LZMA
+ if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) {
+ ERROR("Failed to allocate zlib workspace\n");
+ destroy_inodecache();
+ err = -ENOMEM;
+ goto out;
+ }
++#endif
+
+ if ((err = register_filesystem(&squashfs_fs_type))) {
++#ifndef SQUASHFS_LZMA
+ vfree(stream.workspace);
++#endif
+ destroy_inodecache();
+ }
+
+@@ -2064,7 +2098,9 @@
+
+ static void __exit exit_squashfs_fs(void)
+ {
++#ifndef SQUASHFS_LZMA
+ vfree(stream.workspace);
++#endif
+ unregister_filesystem(&squashfs_fs_type);
+ destroy_inodecache();
+ }
+
diff -urN linux-2.6.19.old/fs/squashfs/Makefile linux-2.6.19.dev/fs/squashfs/Makefile
--- linux-2.6.19.old/fs/squashfs/Makefile 2006-12-14 03:13:22.000000000 +0100
+++ linux-2.6.19.dev/fs/squashfs/Makefile 2006-12-14 03:13:31.000000000 +0100
-@@ -4,5 +4,4 @@
+@@ -4,4 +4,3 @@
obj-$(CONFIG_SQUASHFS) += squashfs.o
squashfs-y += inode.o
-squashfs-y += squashfs2_0.o
- squashfs-y += LzmaDecode.o
diff -urN linux-2.6.19.old/fs/squashfs/squashfs.h linux-2.6.19.dev/fs/squashfs/squashfs.h
--- linux-2.6.19.old/fs/squashfs/squashfs.h 2006-12-14 03:13:20.000000000 +0100
+++ linux-2.6.19.dev/fs/squashfs/squashfs.h 2006-12-14 03:13:31.000000000 +0100
projects / oweals / openwrt.git / commitdiff