diff options
Diffstat (limited to 'packages/linux/linux-openmoko-devel/linux-openmoko-2.6.28/0001-squashfs-with-lzma.patch')
| -rw-r--r-- | packages/linux/linux-openmoko-devel/linux-openmoko-2.6.28/0001-squashfs-with-lzma.patch | 5342 |
1 files changed, 0 insertions, 5342 deletions
diff --git a/packages/linux/linux-openmoko-devel/linux-openmoko-2.6.28/0001-squashfs-with-lzma.patch b/packages/linux/linux-openmoko-devel/linux-openmoko-2.6.28/0001-squashfs-with-lzma.patch deleted file mode 100644 index 04d47fe16f..0000000000 --- a/packages/linux/linux-openmoko-devel/linux-openmoko-2.6.28/0001-squashfs-with-lzma.patch +++ /dev/null @@ -1,5342 +0,0 @@ - -diff -urN linux-2.6.23/fs/squashfs/LzmaDecode.c linux-2.6.23.sqlzma-ng/fs/squashfs/LzmaDecode.c ---- linux-2.6.23/fs/squashfs/LzmaDecode.c 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/LzmaDecode.c 2007-11-13 19:45:12.000000000 -0500 -@@ -0,0 +1,584 @@ -+/*
-+ LzmaDecode.c
-+ LZMA Decoder (optimized for Speed version)
-+
-+ LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01)
-+ 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"
-+
-+#define kNumTopBits 24
-+#define kTopValue ((UInt32)1 << kNumTopBits)
-+
-+#define kNumBitModelTotalBits 11
-+#define kBitModelTotal (1 << kNumBitModelTotalBits)
-+#define kNumMoveBits 5
-+
-+#define RC_READ_BYTE (*Buffer++)
-+
-+#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \
-+ { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }}
-+
-+#ifdef _LZMA_IN_CB
-+
-+#define RC_TEST { if (Buffer == BufferLim) \
-+ { SizeT size; int result = InCallback->Read(InCallback, &Buffer, &size); if (result != LZMA_RESULT_OK) return result; \
-+ BufferLim = Buffer + size; if (size == 0) return LZMA_RESULT_DATA_ERROR; }}
-+
-+#define RC_INIT Buffer = BufferLim = 0; RC_INIT2
-+
-+#else
-+
-+#define RC_TEST { if (Buffer == BufferLim) return LZMA_RESULT_DATA_ERROR; }
-+
-+#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2
-+
-+#endif
-+
-+#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; }
-+
-+#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound)
-+#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits;
-+#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits;
-+
-+#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \
-+ { UpdateBit0(p); mi <<= 1; A0; } else \
-+ { UpdateBit1(p); mi = (mi + mi) + 1; A1; }
-+
-+#define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;)
-+
-+#define RangeDecoderBitTreeDecode(probs, numLevels, res) \
-+ { int i = numLevels; res = 1; \
-+ do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); \
-+ res -= (1 << numLevels); }
-+
-+
-+#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)
-+
-+
-+#define kNumStates 12
-+#define kNumLitStates 7
-+
-+#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
-+
-+int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size)
-+{
-+ unsigned char prop0;
-+ if (size < LZMA_PROPERTIES_SIZE)
-+ return LZMA_RESULT_DATA_ERROR;
-+ prop0 = propsData[0];
-+ if (prop0 >= (9 * 5 * 5))
-+ return LZMA_RESULT_DATA_ERROR;
-+ {
-+ for (propsRes->pb = 0; prop0 >= (9 * 5); propsRes->pb++, prop0 -= (9 * 5));
-+ for (propsRes->lp = 0; prop0 >= 9; propsRes->lp++, prop0 -= 9);
-+ propsRes->lc = prop0;
-+ /*
-+ unsigned char remainder = (unsigned char)(prop0 / 9);
-+ propsRes->lc = prop0 % 9;
-+ propsRes->pb = remainder / 5;
-+ propsRes->lp = remainder % 5;
-+ */
-+ }
-+
-+ #ifdef _LZMA_OUT_READ
-+ {
-+ int i;
-+ propsRes->DictionarySize = 0;
-+ for (i = 0; i < 4; i++)
-+ propsRes->DictionarySize += (UInt32)(propsData[1 + i]) << (i * 8);
-+ if (propsRes->DictionarySize == 0)
-+ propsRes->DictionarySize = 1;
-+ }
-+ #endif
-+ return LZMA_RESULT_OK;
-+}
-+
-+#define kLzmaStreamWasFinishedId (-1)
-+
-+int LzmaDecode(CLzmaDecoderState *vs,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *InCallback,
-+ #else
-+ const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
-+ #endif
-+ unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed)
-+{
-+ CProb *p = vs->Probs;
-+ SizeT nowPos = 0;
-+ Byte previousByte = 0;
-+ UInt32 posStateMask = (1 << (vs->Properties.pb)) - 1;
-+ UInt32 literalPosMask = (1 << (vs->Properties.lp)) - 1;
-+ int lc = vs->Properties.lc;
-+
-+ #ifdef _LZMA_OUT_READ
-+
-+ UInt32 Range = vs->Range;
-+ UInt32 Code = vs->Code;
-+ #ifdef _LZMA_IN_CB
-+ const Byte *Buffer = vs->Buffer;
-+ const Byte *BufferLim = vs->BufferLim;
-+ #else
-+ const Byte *Buffer = inStream;
-+ const Byte *BufferLim = inStream + inSize;
-+ #endif
-+ int state = vs->State;
-+ UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
-+ int len = vs->RemainLen;
-+ UInt32 globalPos = vs->GlobalPos;
-+ UInt32 distanceLimit = vs->DistanceLimit;
-+
-+ Byte *dictionary = vs->Dictionary;
-+ UInt32 dictionarySize = vs->Properties.DictionarySize;
-+ UInt32 dictionaryPos = vs->DictionaryPos;
-+
-+ Byte tempDictionary[4];
-+
-+ #ifndef _LZMA_IN_CB
-+ *inSizeProcessed = 0;
-+ #endif
-+ *outSizeProcessed = 0;
-+ if (len == kLzmaStreamWasFinishedId)
-+ return LZMA_RESULT_OK;
-+
-+ if (dictionarySize == 0)
-+ {
-+ dictionary = tempDictionary;
-+ dictionarySize = 1;
-+ tempDictionary[0] = vs->TempDictionary[0];
-+ }
-+
-+ if (len == kLzmaNeedInitId)
-+ {
-+ {
-+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
-+ UInt32 i;
-+ for (i = 0; i < numProbs; i++)
-+ p[i] = kBitModelTotal >> 1;
-+ rep0 = rep1 = rep2 = rep3 = 1;
-+ state = 0;
-+ globalPos = 0;
-+ distanceLimit = 0;
-+ dictionaryPos = 0;
-+ dictionary[dictionarySize - 1] = 0;
-+ #ifdef _LZMA_IN_CB
-+ RC_INIT;
-+ #else
-+ RC_INIT(inStream, inSize);
-+ #endif
-+ }
-+ len = 0;
-+ }
-+ 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 /* if !_LZMA_OUT_READ */
-+
-+ int state = 0;
-+ UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
-+ int len = 0;
-+ const Byte *Buffer;
-+ const Byte *BufferLim;
-+ UInt32 Range;
-+ UInt32 Code;
-+
-+ #ifndef _LZMA_IN_CB
-+ *inSizeProcessed = 0;
-+ #endif
-+ *outSizeProcessed = 0;
-+
-+ {
-+ UInt32 i;
-+ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + vs->Properties.lp));
-+ for (i = 0; i < numProbs; i++)
-+ p[i] = kBitModelTotal >> 1;
-+ }
-+
-+ #ifdef _LZMA_IN_CB
-+ RC_INIT;
-+ #else
-+ RC_INIT(inStream, inSize);
-+ #endif
-+
-+ #endif /* _LZMA_OUT_READ */
-+
-+ while(nowPos < outSize)
-+ {
-+ CProb *prob;
-+ UInt32 bound;
-+ int posState = (int)(
-+ (nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ & posStateMask);
-+
-+ prob = p + IsMatch + (state << kNumPosBitsMax) + posState;
-+ IfBit0(prob)
-+ {
-+ int symbol = 1;
-+ UpdateBit0(prob)
-+ prob = p + Literal + (LZMA_LIT_SIZE *
-+ (((
-+ (nowPos
-+ #ifdef _LZMA_OUT_READ
-+ + globalPos
-+ #endif
-+ )
-+ & literalPosMask) << lc) + (previousByte >> (8 - lc))));
-+
-+ if (state >= kNumLitStates)
-+ {
-+ int matchByte;
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos = dictionaryPos - rep0;
-+ if (pos >= dictionarySize)
-+ pos += dictionarySize;
-+ matchByte = dictionary[pos];
-+ #else
-+ matchByte = outStream[nowPos - rep0];
-+ #endif
-+ do
-+ {
-+ int bit;
-+ CProb *probLit;
-+ matchByte <<= 1;
-+ bit = (matchByte & 0x100);
-+ probLit = prob + 0x100 + bit + symbol;
-+ RC_GET_BIT2(probLit, symbol, if (bit != 0) break, if (bit == 0) break)
-+ }
-+ while (symbol < 0x100);
-+ }
-+ while (symbol < 0x100)
-+ {
-+ CProb *probLit = prob + symbol;
-+ RC_GET_BIT(probLit, symbol)
-+ }
-+ previousByte = (Byte)symbol;
-+
-+ outStream[nowPos++] = previousByte;
-+ #ifdef _LZMA_OUT_READ
-+ if (distanceLimit < dictionarySize)
-+ distanceLimit++;
-+
-+ dictionary[dictionaryPos] = previousByte;
-+ if (++dictionaryPos == dictionarySize)
-+ dictionaryPos = 0;
-+ #endif
-+ if (state < 4) state = 0;
-+ else if (state < 10) state -= 3;
-+ else state -= 6;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ prob = p + IsRep + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ rep3 = rep2;
-+ rep2 = rep1;
-+ rep1 = rep0;
-+ state = state < kNumLitStates ? 0 : 3;
-+ prob = p + LenCoder;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ prob = p + IsRepG0 + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ prob = p + IsRep0Long + (state << kNumPosBitsMax) + posState;
-+ IfBit0(prob)
-+ {
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 pos;
-+ #endif
-+ UpdateBit0(prob);
-+
-+ #ifdef _LZMA_OUT_READ
-+ if (distanceLimit == 0)
-+ #else
-+ if (nowPos == 0)
-+ #endif
-+ return LZMA_RESULT_DATA_ERROR;
-+
-+ state = state < kNumLitStates ? 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;
-+ #ifdef _LZMA_OUT_READ
-+ if (distanceLimit < dictionarySize)
-+ distanceLimit++;
-+ #endif
-+
-+ continue;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ }
-+ }
-+ else
-+ {
-+ UInt32 distance;
-+ UpdateBit1(prob);
-+ prob = p + IsRepG1 + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ distance = rep1;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ prob = p + IsRepG2 + state;
-+ IfBit0(prob)
-+ {
-+ UpdateBit0(prob);
-+ distance = rep2;
-+ }
-+ else
-+ {
-+ UpdateBit1(prob);
-+ distance = rep3;
-+ rep3 = rep2;
-+ }
-+ rep2 = rep1;
-+ }
-+ rep1 = rep0;
-+ rep0 = distance;
-+ }
-+ state = state < kNumLitStates ? 8 : 11;
-+ prob = p + RepLenCoder;
-+ }
-+ {
-+ int numBits, offset;
-+ CProb *probLen = prob + LenChoice;
-+ IfBit0(probLen)
-+ {
-+ UpdateBit0(probLen);
-+ probLen = prob + LenLow + (posState << kLenNumLowBits);
-+ offset = 0;
-+ numBits = kLenNumLowBits;
-+ }
-+ else
-+ {
-+ UpdateBit1(probLen);
-+ probLen = prob + LenChoice2;
-+ IfBit0(probLen)
-+ {
-+ UpdateBit0(probLen);
-+ probLen = prob + LenMid + (posState << kLenNumMidBits);
-+ offset = kLenNumLowSymbols;
-+ numBits = kLenNumMidBits;
-+ }
-+ else
-+ {
-+ UpdateBit1(probLen);
-+ probLen = prob + LenHigh;
-+ offset = kLenNumLowSymbols + kLenNumMidSymbols;
-+ numBits = kLenNumHighBits;
-+ }
-+ }
-+ RangeDecoderBitTreeDecode(probLen, numBits, len);
-+ len += offset;
-+ }
-+
-+ if (state < 4)
-+ {
-+ int posSlot;
-+ state += kNumLitStates;
-+ prob = p + PosSlot +
-+ ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
-+ kNumPosSlotBits);
-+ RangeDecoderBitTreeDecode(prob, kNumPosSlotBits, posSlot);
-+ if (posSlot >= kStartPosModelIndex)
-+ {
-+ int numDirectBits = ((posSlot >> 1) - 1);
-+ rep0 = (2 | ((UInt32)posSlot & 1));
-+ if (posSlot < kEndPosModelIndex)
-+ {
-+ rep0 <<= numDirectBits;
-+ prob = p + SpecPos + rep0 - posSlot - 1;
-+ }
-+ else
-+ {
-+ numDirectBits -= kNumAlignBits;
-+ do
-+ {
-+ RC_NORMALIZE
-+ Range >>= 1;
-+ rep0 <<= 1;
-+ if (Code >= Range)
-+ {
-+ Code -= Range;
-+ rep0 |= 1;
-+ }
-+ }
-+ while (--numDirectBits != 0);
-+ prob = p + Align;
-+ rep0 <<= kNumAlignBits;
-+ numDirectBits = kNumAlignBits;
-+ }
-+ {
-+ int i = 1;
-+ int mi = 1;
-+ do
-+ {
-+ CProb *prob3 = prob + mi;
-+ RC_GET_BIT2(prob3, mi, ; , rep0 |= i);
-+ i <<= 1;
-+ }
-+ while(--numDirectBits != 0);
-+ }
-+ }
-+ else
-+ rep0 = posSlot;
-+ if (++rep0 == (UInt32)(0))
-+ {
-+ /* it's for stream version */
-+ len = kLzmaStreamWasFinishedId;
-+ break;
-+ }
-+ }
-+
-+ len += kMatchMinLen;
-+ #ifdef _LZMA_OUT_READ
-+ if (rep0 > distanceLimit)
-+ #else
-+ if (rep0 > nowPos)
-+ #endif
-+ return LZMA_RESULT_DATA_ERROR;
-+
-+ #ifdef _LZMA_OUT_READ
-+ if (dictionarySize - distanceLimit > (UInt32)len)
-+ distanceLimit += len;
-+ else
-+ distanceLimit = dictionarySize;
-+ #endif
-+
-+ 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
-+ len--;
-+ outStream[nowPos++] = previousByte;
-+ }
-+ while(len != 0 && nowPos < outSize);
-+ }
-+ }
-+ RC_NORMALIZE;
-+
-+ #ifdef _LZMA_OUT_READ
-+ vs->Range = Range;
-+ vs->Code = Code;
-+ vs->DictionaryPos = dictionaryPos;
-+ vs->GlobalPos = globalPos + (UInt32)nowPos;
-+ vs->DistanceLimit = distanceLimit;
-+ vs->Reps[0] = rep0;
-+ vs->Reps[1] = rep1;
-+ vs->Reps[2] = rep2;
-+ vs->Reps[3] = rep3;
-+ vs->State = state;
-+ vs->RemainLen = len;
-+ vs->TempDictionary[0] = tempDictionary[0];
-+ #endif
-+
-+ #ifdef _LZMA_IN_CB
-+ vs->Buffer = Buffer;
-+ vs->BufferLim = BufferLim;
-+ #else
-+ *inSizeProcessed = (SizeT)(Buffer - inStream);
-+ #endif
-+ *outSizeProcessed = nowPos;
-+ return LZMA_RESULT_OK;
-+}
-diff -urN linux-2.6.23/fs/squashfs/LzmaDecode.h linux-2.6.23.sqlzma-ng/fs/squashfs/LzmaDecode.h ---- linux-2.6.23/fs/squashfs/LzmaDecode.h 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/LzmaDecode.h 2007-11-13 19:45:12.000000000 -0500 -@@ -0,0 +1,113 @@ -+/*
-+ LzmaDecode.h
-+ LZMA Decoder interface
-+
-+ LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01)
-+ 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
-+
-+#include "LzmaTypes.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 */
-+
-+#ifdef _LZMA_PROB32
-+#define CProb UInt32
-+#else
-+#define CProb UInt16
-+#endif
-+
-+#define LZMA_RESULT_OK 0
-+#define LZMA_RESULT_DATA_ERROR 1
-+
-+#ifdef _LZMA_IN_CB
-+typedef struct _ILzmaInCallback
-+{
-+ int (*Read)(void *object, const unsigned char **buffer, SizeT *bufferSize);
-+} ILzmaInCallback;
-+#endif
-+
-+#define LZMA_BASE_SIZE 1846
-+#define LZMA_LIT_SIZE 768
-+
-+#define LZMA_PROPERTIES_SIZE 5
-+
-+typedef struct _CLzmaProperties
-+{
-+ int lc;
-+ int lp;
-+ int pb;
-+ #ifdef _LZMA_OUT_READ
-+ UInt32 DictionarySize;
-+ #endif
-+}CLzmaProperties;
-+
-+int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size);
-+
-+#define LzmaGetNumProbs(Properties) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((Properties)->lc + (Properties)->lp)))
-+
-+#define kLzmaNeedInitId (-2)
-+
-+typedef struct _CLzmaDecoderState
-+{
-+ CLzmaProperties Properties;
-+ CProb *Probs;
-+
-+ #ifdef _LZMA_IN_CB
-+ const unsigned char *Buffer;
-+ const unsigned char *BufferLim;
-+ #endif
-+
-+ #ifdef _LZMA_OUT_READ
-+ unsigned char *Dictionary;
-+ UInt32 Range;
-+ UInt32 Code;
-+ UInt32 DictionaryPos;
-+ UInt32 GlobalPos;
-+ UInt32 DistanceLimit;
-+ UInt32 Reps[4];
-+ int State;
-+ int RemainLen;
-+ unsigned char TempDictionary[4];
-+ #endif
-+} CLzmaDecoderState;
-+
-+#ifdef _LZMA_OUT_READ
-+#define LzmaDecoderInit(vs) { (vs)->RemainLen = kLzmaNeedInitId; }
-+#endif
-+
-+int LzmaDecode(CLzmaDecoderState *vs,
-+ #ifdef _LZMA_IN_CB
-+ ILzmaInCallback *inCallback,
-+ #else
-+ const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
-+ #endif
-+ unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed);
-+
-+#endif
-diff -urN linux-2.6.23/fs/squashfs/LzmaTypes.h linux-2.6.23.sqlzma-ng/fs/squashfs/LzmaTypes.h ---- linux-2.6.23/fs/squashfs/LzmaTypes.h 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/LzmaTypes.h 2007-11-13 19:47:32.000000000 -0500 -@@ -0,0 +1,45 @@ -+/*
-+LzmaTypes.h
-+
-+Types for LZMA Decoder
-+
-+This file written and distributed to public domain by Igor Pavlov.
-+This file is part of LZMA SDK 4.40 (2006-05-01)
-+*/
-+
-+#ifndef __LZMATYPES_H
-+#define __LZMATYPES_H
-+
-+#ifndef _7ZIP_BYTE_DEFINED
-+#define _7ZIP_BYTE_DEFINED
-+typedef unsigned char Byte;
-+#endif
-+
-+#ifndef _7ZIP_UINT16_DEFINED
-+#define _7ZIP_UINT16_DEFINED
-+typedef unsigned short UInt16;
-+#endif
-+
-+#ifndef _7ZIP_UINT32_DEFINED
-+#define _7ZIP_UINT32_DEFINED
-+#ifdef _LZMA_UINT32_IS_ULONG
-+typedef unsigned long UInt32;
-+#else
-+typedef unsigned int UInt32;
-+#endif
-+#endif
-+
-+/* #define _LZMA_NO_SYSTEM_SIZE_T */
-+/* You can use it, if you don't want <stddef.h> */
-+
-+#ifndef _7ZIP_SIZET_DEFINED
-+#define _7ZIP_SIZET_DEFINED
-+#ifdef _LZMA_NO_SYSTEM_SIZE_T
-+typedef UInt32 SizeT;
-+#else
-+#include <stddef.h>
-+typedef size_t SizeT;
-+#endif
-+#endif
-+
-+#endif
-diff -urN linux-2.6.23/fs/squashfs/Makefile linux-2.6.23.sqlzma-ng/fs/squashfs/Makefile ---- linux-2.6.23/fs/squashfs/Makefile 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/Makefile 2007-11-13 19:52:56.000000000 -0500 -@@ -0,0 +1,10 @@ -+# -+# Makefile for the linux squashfs routines. -+# -+ -+ -+obj-$(CONFIG_SQUASHFS) += unlzma.o sqlzma.o squashfs.o -+unlzma-y += module.o -+sqlzma-y += uncomp.o -+squashfs-y += inode.o -+squashfs-y += squashfs2_0.o -diff -urN linux-2.6.23/fs/squashfs/inode.c linux-2.6.23.sqlzma-ng/fs/squashfs/inode.c ---- linux-2.6.23/fs/squashfs/inode.c 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/inode.c 2007-11-13 19:14:24.000000000 -0500 -@@ -0,0 +1,2312 @@ -+/* -+ * Squashfs - a compressed read only filesystem for Linux -+ * -+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007 -+ * Phillip Lougher <phillip@lougher.demon.co.uk> -+ * -+ * 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, -+ * or (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -+ * -+ * inode.c -+ */ -+ -+#include <linux/squashfs_fs.h> -+#include <linux/module.h> -+#include <linux/zlib.h> -+#include <linux/fs.h> -+#include <linux/squashfs_fs_sb.h> -+#include <linux/squashfs_fs_i.h> -+#include <linux/buffer_head.h> -+#include <linux/vfs.h> -+#include <linux/vmalloc.h> -+#include <linux/smp_lock.h> -+#include <linux/sched.h> -+#include <linux/exportfs.h> -+ -+#include "squashfs.h" -+#include "sqlzma.h" -+ -+#undef KeepPreemptive -+#if defined(CONFIG_PREEMPT) && !defined(UnsquashNoPreempt) -+#define KeepPreemptive -+#endif -+ -+struct sqlzma { -+#ifdef KeepPreemptive -+ struct mutex mtx; -+#endif -+ unsigned char read_data[SQUASHFS_FILE_MAX_SIZE]; -+ struct sqlzma_un un; -+}; -+static DEFINE_PER_CPU(struct sqlzma *, sqlzma); -+ -+#define dpri(fmt, args...) /* printk("%s:%d: " fmt, __func__, __LINE__, ##args) */ -+#define dpri_un(un) dpri("un{%d, {%d %p}, {%d %p}, {%d %p}}\n", \ -+ (un)->un_lzma, (un)->un_a[0].sz, (un)->un_a[0].buf, \ -+ (un)->un_a[1].sz, (un)->un_a[1].buf, \ -+ (un)->un_a[2].sz, (un)->un_a[2].buf) -+ -+static int squashfs_cached_blks; -+ -+static void vfs_read_inode(struct inode *i); -+static struct dentry *squashfs_get_parent(struct dentry *child); -+static int squashfs_read_inode(struct inode *i, squashfs_inode_t inode); -+static int squashfs_statfs(struct dentry *, struct kstatfs *); -+static int squashfs_symlink_readpage(struct file *file, struct page *page); -+static long long read_blocklist(struct inode *inode, int index, -+ int readahead_blks, char *block_list, -+ unsigned short **block_p, unsigned int *bsize); -+static int squashfs_readpage(struct file *file, struct page *page); -+static int squashfs_readdir(struct file *, void *, filldir_t); -+static struct dentry *squashfs_lookup(struct inode *, struct dentry *, -+ struct nameidata *); -+static int squashfs_remount(struct super_block *s, int *flags, char *data); -+static void squashfs_put_super(struct super_block *); -+static int squashfs_get_sb(struct file_system_type *,int, const char *, void *, -+ struct vfsmount *); -+static struct inode *squashfs_alloc_inode(struct super_block *sb); -+static void squashfs_destroy_inode(struct inode *inode); -+static int init_inodecache(void); -+static void destroy_inodecache(void); -+ -+static struct file_system_type squashfs_fs_type = { -+ .owner = THIS_MODULE, -+ .name = "squashfs", -+ .get_sb = squashfs_get_sb, -+ .kill_sb = kill_block_super, -+ .fs_flags = FS_REQUIRES_DEV -+}; -+ -+static const unsigned char squashfs_filetype_table[] = { -+ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK -+}; -+ -+static struct super_operations squashfs_super_ops = { -+ .alloc_inode = squashfs_alloc_inode, -+ .destroy_inode = squashfs_destroy_inode, -+ .statfs = squashfs_statfs, -+ .put_super = squashfs_put_super, -+ .remount_fs = squashfs_remount -+}; -+ -+static struct super_operations squashfs_export_super_ops = { -+ .alloc_inode = squashfs_alloc_inode, -+ .destroy_inode = squashfs_destroy_inode, -+ .statfs = squashfs_statfs, -+ .put_super = squashfs_put_super, -+ .read_inode = vfs_read_inode -+}; -+ -+static struct export_operations squashfs_export_ops = { -+ .get_parent = squashfs_get_parent -+}; -+ -+SQSH_EXTERN const struct address_space_operations squashfs_symlink_aops = { -+ .readpage = squashfs_symlink_readpage -+}; -+ -+SQSH_EXTERN const struct address_space_operations squashfs_aops = { -+ .readpage = squashfs_readpage -+}; -+ -+static const struct file_operations squashfs_dir_ops = { -+ .read = generic_read_dir, -+ .readdir = squashfs_readdir -+}; -+ -+SQSH_EXTERN struct inode_operations squashfs_dir_inode_ops = { -+ .lookup = squashfs_lookup -+}; -+ -+ -+static struct buffer_head *get_block_length(struct super_block *s, -+ int *cur_index, int *offset, int *c_byte) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ unsigned short temp; -+ struct buffer_head *bh; -+ -+ if (!(bh = sb_bread(s, *cur_index))) -+ goto out; -+ -+ if (msblk->devblksize - *offset == 1) { -+ if (msblk->swap) -+ ((unsigned char *) &temp)[1] = *((unsigned char *) -+ (bh->b_data + *offset)); -+ else -+ ((unsigned char *) &temp)[0] = *((unsigned char *) -+ (bh->b_data + *offset)); -+ brelse(bh); -+ if (!(bh = sb_bread(s, ++(*cur_index)))) -+ goto out; -+ if (msblk->swap) -+ ((unsigned char *) &temp)[0] = *((unsigned char *) -+ bh->b_data); -+ else -+ ((unsigned char *) &temp)[1] = *((unsigned char *) -+ bh->b_data); -+ *c_byte = temp; -+ *offset = 1; -+ } else { -+ if (msblk->swap) { -+ ((unsigned char *) &temp)[1] = *((unsigned char *) -+ (bh->b_data + *offset)); -+ ((unsigned char *) &temp)[0] = *((unsigned char *) -+ (bh->b_data + *offset + 1)); -+ } else { -+ ((unsigned char *) &temp)[0] = *((unsigned char *) -+ (bh->b_data + *offset)); -+ ((unsigned char *) &temp)[1] = *((unsigned char *) -+ (bh->b_data + *offset + 1)); -+ } -+ *c_byte = temp; -+ *offset += 2; -+ } -+ -+ if (SQUASHFS_CHECK_DATA(msblk->sblk.flags)) { -+ if (*offset == msblk->devblksize) { -+ brelse(bh); -+ if (!(bh = sb_bread(s, ++(*cur_index)))) -+ goto out; -+ *offset = 0; -+ } -+ if (*((unsigned char *) (bh->b_data + *offset)) != -+ SQUASHFS_MARKER_BYTE) { -+ ERROR("Metadata block marker corrupt @ %x\n", -+ *cur_index); -+ brelse(bh); -+ goto out; -+ } -+ (*offset)++; -+ } -+ return bh; -+ -+out: -+ return NULL; -+} -+ -+ -+SQSH_EXTERN unsigned int squashfs_read_data(struct super_block *s, char *buffer, -+ long long index, unsigned int length, -+ long long *next_index, int srclength) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ struct buffer_head **bh; -+ unsigned int offset = index & ((1 << msblk->devblksize_log2) - 1); -+ unsigned int cur_index = index >> msblk->devblksize_log2; -+ int bytes, avail_bytes, b = 0, k = 0; -+ unsigned int compressed; -+ unsigned int c_byte = length; -+ -+ bh = kmalloc(((sblk->block_size >> msblk->devblksize_log2) + 1) * -+ sizeof(struct buffer_head *), GFP_KERNEL); -+ if (bh == NULL) -+ goto read_failure; -+ -+ if (c_byte) { -+ bytes = msblk->devblksize - offset; -+ compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte); -+ c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte); -+ -+ TRACE("Block @ 0x%llx, %scompressed size %d, src size %d\n", index, -+ compressed ? "" : "un", (unsigned int) c_byte, srclength); -+ -+ if (c_byte > srclength || index < 0 || (index + c_byte) > sblk->bytes_used) -+ goto read_failure; -+ -+ bh[0] = sb_getblk(s, cur_index); -+ if (bh[0] == NULL) -+ goto block_release; -+ -+ for (b = 1; bytes < c_byte; b++) { -+ bh[b] = sb_getblk(s, ++cur_index); -+ if (bh[b] == NULL) -+ goto block_release; -+ bytes += msblk->devblksize; -+ } -+ ll_rw_block(READ, b, bh); -+ } else { -+ if (index < 0 || (index + 2) > sblk->bytes_used) -+ goto read_failure; -+ -+ bh[0] = get_block_length(s, (int *)&cur_index, (int *)&offset, -+ (int *)&c_byte); -+ if (bh[0] == NULL) -+ goto read_failure; -+ -+ bytes = msblk->devblksize - offset; -+ compressed = SQUASHFS_COMPRESSED(c_byte); -+ c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte); -+ -+ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed -+ ? "" : "un", (unsigned int) c_byte); -+ -+ if (c_byte > srclength || (index + c_byte) > sblk->bytes_used) -+ goto read_failure; -+ -+ for (b = 1; bytes < c_byte; b++) { -+ bh[b] = sb_getblk(s, ++cur_index); -+ if (bh[b] == NULL) -+ goto block_release; -+ bytes += msblk->devblksize; -+ } -+ ll_rw_block(READ, b - 1, bh + 1); -+ } -+ -+ if (compressed) { -+ int zlib_err = Z_STREAM_END; -+ int rest, start; -+ enum {Src, Dst}; -+ struct sized_buf sbuf[2]; -+ struct sqlzma *percpu; -+ -+ /* -+ * uncompress block -+ */ -+ -+ for (k = 0; k < b; k++) { -+ wait_on_buffer(bh[k]); -+ if (!buffer_uptodate(bh[k])) -+ goto block_release; -+ } -+ -+ avail_bytes = 0; -+ for (k = 0; !avail_bytes && k < b; k++) { -+ avail_bytes = msblk->devblksize - offset; -+ if (c_byte < avail_bytes) -+ avail_bytes = c_byte; -+ if (avail_bytes) -+ break; -+ offset = 0; -+ brelse(bh[k]); -+ } -+ bytes = 0; -+ if (!avail_bytes) -+ goto block_release; // nothing to be process -+ -+ start = k; -+ /* it disables preemption */ -+ percpu = get_cpu_var(sqlzma); -+#ifdef KeepPreemptive -+ put_cpu_var(sqlzma); -+ mutex_lock(&percpu->mtx); -+#endif -+ -+ for (; k < b; k++) { -+ memcpy(percpu->read_data + bytes, bh[k]->b_data + offset, -+ avail_bytes); -+ bytes += avail_bytes; -+ offset = 0; -+ brelse(bh[k]); -+ avail_bytes = msblk->devblksize - offset; -+ rest = c_byte - bytes; -+ if (rest < avail_bytes) -+ avail_bytes = rest; -+ } -+ -+ sbuf[Src].buf = percpu->read_data; -+ sbuf[Src].sz = bytes; -+ sbuf[Dst].buf = buffer; -+ sbuf[Dst].sz = srclength; -+ dpri_un(&percpu->un); -+ dpri("src %d %p, dst %d %p\n", sbuf[Src].sz, sbuf[Src].buf, -+ sbuf[Dst].sz, sbuf[Dst].buf); -+ zlib_err = sqlzma_un(&percpu->un, sbuf + Src, sbuf + Dst); -+ bytes = percpu->un.un_reslen; -+ -+#ifdef KeepPreemptive -+ mutex_unlock(&percpu->mtx); -+#else -+ put_cpu_var(sqlzma); -+#endif -+ if (unlikely(zlib_err)) { -+ dpri("zlib_err %d\n", zlib_err); -+ goto release_mutex; -+ } -+ } else { -+ int i; -+ -+ for(i = 0; i < b; i++) { -+ wait_on_buffer(bh[i]); -+ if (!buffer_uptodate(bh[i])) -+ goto block_release; -+ } -+ -+ for (bytes = 0; k < b; k++) { -+ avail_bytes = min(c_byte - bytes, msblk->devblksize - offset); -+ -+ memcpy(buffer + bytes, bh[k]->b_data + offset, avail_bytes); -+ bytes += avail_bytes; -+ offset = 0; -+ brelse(bh[k]); -+ } -+ } -+ -+ if (next_index) -+ *next_index = index + c_byte + (length ? 0 : -+ (SQUASHFS_CHECK_DATA(msblk->sblk.flags) ? 3 : 2)); -+ -+ kfree(bh); -+ return bytes; -+ -+release_mutex: -+ //mutex_unlock(&msblk->read_data_mutex); -+ -+block_release: -+ for (; k < b; k++) -+ brelse(bh[k]); -+ -+read_failure: -+ ERROR("sb_bread failed reading block 0x%x\n", cur_index); -+ kfree(bh); -+ return 0; -+} -+ -+ -+SQSH_EXTERN int squashfs_get_cached_block(struct super_block *s, void *buffer, -+ long long block, unsigned int offset, -+ int length, long long *next_block, -+ unsigned int *next_offset) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ int n, i, bytes, return_length = length; -+ long long next_index; -+ -+ TRACE("Entered squashfs_get_cached_block [%llx:%x]\n", block, offset); -+ -+ while (1) { -+ for (i = 0; i < squashfs_cached_blks; i++) -+ if (msblk->block_cache[i].block == block) -+ break; -+ -+ mutex_lock(&msblk->block_cache_mutex); -+ -+ if (i == squashfs_cached_blks) { -+ /* read inode header block */ -+ if (msblk->unused_cache_blks == 0) { -+ mutex_unlock(&msblk->block_cache_mutex); -+ wait_event(msblk->waitq, msblk->unused_cache_blks); -+ continue; -+ } -+ -+ i = msblk->next_cache; -+ for (n = 0; n < squashfs_cached_blks; n++) { -+ if (msblk->block_cache[i].block != SQUASHFS_USED_BLK) -+ break; -+ i = (i + 1) % squashfs_cached_blks; -+ } -+ -+ msblk->next_cache = (i + 1) % squashfs_cached_blks; -+ -+ if (msblk->block_cache[i].block == SQUASHFS_INVALID_BLK) { -+ msblk->block_cache[i].data = vmalloc(SQUASHFS_METADATA_SIZE); -+ if (msblk->block_cache[i].data == NULL) { -+ ERROR("Failed to allocate cache block\n"); -+ mutex_unlock(&msblk->block_cache_mutex); -+ goto out; -+ } -+ } -+ -+ msblk->block_cache[i].block = SQUASHFS_USED_BLK; -+ msblk->unused_cache_blks --; -+ mutex_unlock(&msblk->block_cache_mutex); -+ -+ msblk->block_cache[i].length = squashfs_read_data(s, -+ msblk->block_cache[i].data, block, 0, &next_index, -+ SQUASHFS_METADATA_SIZE); -+ -+ if (msblk->block_cache[i].length == 0) { -+ ERROR("Unable to read cache block [%llx:%x]\n", block, offset); -+ mutex_lock(&msblk->block_cache_mutex); -+ msblk->block_cache[i].block = SQUASHFS_INVALID_BLK; -+ msblk->unused_cache_blks ++; -+ smp_mb(); -+ vfree(msblk->block_cache[i].data); -+ wake_up(&msblk->waitq); -+ mutex_unlock(&msblk->block_cache_mutex); -+ goto out; -+ } -+ -+ mutex_lock(&msblk->block_cache_mutex); -+ msblk->block_cache[i].block = block; -+ msblk->block_cache[i].next_index = next_index; -+ msblk->unused_cache_blks ++; -+ smp_mb(); -+ wake_up(&msblk->waitq); -+ TRACE("Read cache block [%llx:%x]\n", block, offset); -+ } -+ -+ if (msblk->block_cache[i].block != block) { -+ mutex_unlock(&msblk->block_cache_mutex); -+ continue; -+ } -+ -+ bytes = msblk->block_cache[i].length - offset; -+ -+ if (bytes < 1) { -+ mutex_unlock(&msblk->block_cache_mutex); -+ goto out; -+ } else if (bytes >= length) { -+ if (buffer) -+ memcpy(buffer, msblk->block_cache[i].data + offset, length); -+ if (msblk->block_cache[i].length - offset == length) { -+ *next_block = msblk->block_cache[i].next_index; -+ *next_offset = 0; -+ } else { -+ *next_block = block; -+ *next_offset = offset + length; -+ } -+ mutex_unlock(&msblk->block_cache_mutex); -+ goto finish; -+ } else { -+ if (buffer) { -+ memcpy(buffer, msblk->block_cache[i].data + offset, bytes); -+ buffer = (char *) buffer + bytes; -+ } -+ block = msblk->block_cache[i].next_index; -+ mutex_unlock(&msblk->block_cache_mutex); -+ length -= bytes; -+ offset = 0; -+ } -+ } -+ -+finish: -+ return return_length; -+out: -+ return 0; -+} -+ -+ -+static int get_fragment_location(struct super_block *s, unsigned int fragment, -+ long long *fragment_start_block, -+ unsigned int *fragment_size) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ long long start_block = -+ msblk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)]; -+ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment); -+ struct squashfs_fragment_entry fragment_entry; -+ -+ if (msblk->swap) { -+ struct squashfs_fragment_entry sfragment_entry; -+ -+ if (!squashfs_get_cached_block(s, &sfragment_entry, start_block, offset, -+ sizeof(sfragment_entry), &start_block, -+ (unsigned int *)&offset)) -+ goto out; -+ SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry); -+ } else -+ if (!squashfs_get_cached_block(s, &fragment_entry, start_block, offset, -+ sizeof(fragment_entry), &start_block, -+ (unsigned int *)&offset)) -+ goto out; -+ -+ *fragment_start_block = fragment_entry.start_block; -+ *fragment_size = fragment_entry.size; -+ -+ return 1; -+ -+out: -+ return 0; -+} -+ -+ -+SQSH_EXTERN void release_cached_fragment(struct squashfs_sb_info *msblk, -+ struct squashfs_fragment_cache *fragment) -+{ -+ mutex_lock(&msblk->fragment_mutex); -+ fragment->locked --; -+ if (fragment->locked == 0) { -+ msblk->unused_frag_blks ++; -+ smp_mb(); -+ wake_up(&msblk->fragment_wait_queue); -+ } -+ mutex_unlock(&msblk->fragment_mutex); -+} -+ -+ -+SQSH_EXTERN -+struct squashfs_fragment_cache *get_cached_fragment(struct super_block *s, -+ long long start_block, int length) -+{ -+ int i, n; -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ -+ while (1) { -+ mutex_lock(&msblk->fragment_mutex); -+ -+ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS && -+ msblk->fragment[i].block != start_block; i++); -+ -+ if (i == SQUASHFS_CACHED_FRAGMENTS) { -+ if (msblk->unused_frag_blks == 0) { -+ mutex_unlock(&msblk->fragment_mutex); -+ wait_event(msblk->fragment_wait_queue, msblk->unused_frag_blks); -+ continue; -+ } -+ -+ i = msblk->next_fragment; -+ for (n = 0; n < SQUASHFS_CACHED_FRAGMENTS; n++) { -+ if (msblk->fragment[i].locked == 0) -+ break; -+ i = (i + 1) % SQUASHFS_CACHED_FRAGMENTS; -+ } -+ -+ msblk->next_fragment = (msblk->next_fragment + 1) % -+ SQUASHFS_CACHED_FRAGMENTS; -+ -+ if (msblk->fragment[i].data == NULL) { -+ msblk->fragment[i].data = vmalloc(sblk->block_size); -+ if (msblk->fragment[i].data == NULL) { -+ ERROR("Failed to allocate fragment cache block\n"); -+ mutex_unlock(&msblk->fragment_mutex); -+ goto out; -+ } -+ } -+ -+ msblk->unused_frag_blks --; -+ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; -+ msblk->fragment[i].locked = 1; -+ mutex_unlock(&msblk->fragment_mutex); -+ -+ msblk->fragment[i].length = squashfs_read_data(s, -+ msblk->fragment[i].data, start_block, length, NULL, -+ sblk->block_size); -+ -+ if (msblk->fragment[i].length == 0) { -+ ERROR("Unable to read fragment cache block [%llx]\n", start_block); -+ msblk->fragment[i].locked = 0; -+ msblk->unused_frag_blks ++; -+ smp_mb(); -+ wake_up(&msblk->fragment_wait_queue); -+ goto out; -+ } -+ -+ mutex_lock(&msblk->fragment_mutex); -+ msblk->fragment[i].block = start_block; -+ TRACE("New fragment %d, start block %lld, locked %d\n", -+ i, msblk->fragment[i].block, msblk->fragment[i].locked); -+ mutex_unlock(&msblk->fragment_mutex); -+ break; -+ } -+ -+ if (msblk->fragment[i].locked == 0) -+ msblk->unused_frag_blks --; -+ msblk->fragment[i].locked++; -+ mutex_unlock(&msblk->fragment_mutex); -+ TRACE("Got fragment %d, start block %lld, locked %d\n", i, -+ msblk->fragment[i].block, msblk->fragment[i].locked); -+ break; -+ } -+ -+ return &msblk->fragment[i]; -+ -+out: -+ return NULL; -+} -+ -+ -+static void squashfs_new_inode(struct squashfs_sb_info *msblk, struct inode *i, -+ struct squashfs_base_inode_header *inodeb) -+{ -+ i->i_ino = inodeb->inode_number; -+ i->i_mtime.tv_sec = inodeb->mtime; -+ i->i_atime.tv_sec = inodeb->mtime; -+ i->i_ctime.tv_sec = inodeb->mtime; -+ i->i_uid = msblk->uid[inodeb->uid]; -+ i->i_mode = inodeb->mode; -+ i->i_size = 0; -+ -+ if (inodeb->guid == SQUASHFS_GUIDS) -+ i->i_gid = i->i_uid; -+ else -+ i->i_gid = msblk->guid[inodeb->guid]; -+} -+ -+ -+static squashfs_inode_t squashfs_inode_lookup(struct super_block *s, int ino) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ long long start = msblk->inode_lookup_table[SQUASHFS_LOOKUP_BLOCK(ino - 1)]; -+ int offset = SQUASHFS_LOOKUP_BLOCK_OFFSET(ino - 1); -+ squashfs_inode_t inode; -+ -+ TRACE("Entered squashfs_inode_lookup, inode_number = %d\n", ino); -+ -+ if (msblk->swap) { -+ squashfs_inode_t sinode; -+ -+ if (!squashfs_get_cached_block(s, &sinode, start, offset, -+ sizeof(sinode), &start, (unsigned int *)&offset)) -+ goto out; -+ SQUASHFS_SWAP_INODE_T((&inode), &sinode); -+ } else if (!squashfs_get_cached_block(s, &inode, start, offset, -+ sizeof(inode), &start, (unsigned int *)&offset)) -+ goto out; -+ -+ TRACE("squashfs_inode_lookup, inode = 0x%llx\n", inode); -+ -+ return inode; -+ -+out: -+ return SQUASHFS_INVALID_BLK; -+} -+ -+ -+static void vfs_read_inode(struct inode *i) -+{ -+ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; -+ squashfs_inode_t inode = squashfs_inode_lookup(i->i_sb, i->i_ino); -+ -+ TRACE("Entered vfs_read_inode\n"); -+ -+ if(inode != SQUASHFS_INVALID_BLK) -+ (msblk->read_inode)(i, inode); -+} -+ -+ -+static struct dentry *squashfs_get_parent(struct dentry *child) -+{ -+ struct inode *i = child->d_inode; -+ struct inode *parent = iget(i->i_sb, SQUASHFS_I(i)->u.s2.parent_inode); -+ struct dentry *rv; -+ -+ TRACE("Entered squashfs_get_parent\n"); -+ -+ if(parent == NULL) { -+ rv = ERR_PTR(-EACCES); -+ goto out; -+ } -+ -+ rv = d_alloc_anon(parent); -+ if(rv == NULL) -+ rv = ERR_PTR(-ENOMEM); -+ -+out: -+ return rv; -+} -+ -+ -+SQSH_EXTERN struct inode *squashfs_iget(struct super_block *s, -+ squashfs_inode_t inode, unsigned int inode_number) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct inode *i = iget_locked(s, inode_number); -+ -+ TRACE("Entered squashfs_iget\n"); -+ -+ if(i && (i->i_state & I_NEW)) { -+ (msblk->read_inode)(i, inode); -+ unlock_new_inode(i); -+ } -+ -+ return i; -+} -+ -+ -+static int squashfs_read_inode(struct inode *i, squashfs_inode_t inode) -+{ -+ struct super_block *s = i->i_sb; -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ long long block = SQUASHFS_INODE_BLK(inode) + sblk->inode_table_start; -+ unsigned int offset = SQUASHFS_INODE_OFFSET(inode); -+ long long next_block; -+ unsigned int next_offset; -+ union squashfs_inode_header id, sid; -+ struct squashfs_base_inode_header *inodeb = &id.base, *sinodeb = &sid.base; -+ -+ TRACE("Entered squashfs_read_inode\n"); -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodeb, block, offset, -+ sizeof(*sinodeb), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_BASE_INODE_HEADER(inodeb, sinodeb, sizeof(*sinodeb)); -+ } else -+ if (!squashfs_get_cached_block(s, inodeb, block, offset, -+ sizeof(*inodeb), &next_block, &next_offset)) -+ goto failed_read; -+ -+ squashfs_new_inode(msblk, i, inodeb); -+ -+ switch(inodeb->inode_type) { -+ case SQUASHFS_FILE_TYPE: { -+ unsigned int frag_size; -+ long long frag_blk; -+ struct squashfs_reg_inode_header *inodep = &id.reg; -+ struct squashfs_reg_inode_header *sinodep = &sid.reg; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodep, block, offset, -+ sizeof(*sinodep), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_REG_INODE_HEADER(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, inodep, block, offset, -+ sizeof(*inodep), &next_block, &next_offset)) -+ goto failed_read; -+ -+ frag_blk = SQUASHFS_INVALID_BLK; -+ -+ if (inodep->fragment != SQUASHFS_INVALID_FRAG) -+ if(!get_fragment_location(s, inodep->fragment, &frag_blk, -+ &frag_size)) -+ goto failed_read; -+ -+ i->i_nlink = 1; -+ i->i_size = inodep->file_size; -+ i->i_fop = &generic_ro_fops; -+ i->i_mode |= S_IFREG; -+ i->i_blocks = ((i->i_size - 1) >> 9) + 1; -+ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; -+ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; -+ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; -+ SQUASHFS_I(i)->start_block = inodep->start_block; -+ SQUASHFS_I(i)->u.s1.block_list_start = next_block; -+ SQUASHFS_I(i)->offset = next_offset; -+ i->i_data.a_ops = &squashfs_aops; -+ -+ TRACE("File inode %x:%x, start_block %llx, " -+ "block_list_start %llx, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ inodep->start_block, next_block, -+ next_offset); -+ break; -+ } -+ case SQUASHFS_LREG_TYPE: { -+ unsigned int frag_size; -+ long long frag_blk; -+ struct squashfs_lreg_inode_header *inodep = &id.lreg; -+ struct squashfs_lreg_inode_header *sinodep = &sid.lreg; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodep, block, offset, -+ sizeof(*sinodep), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_LREG_INODE_HEADER(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, inodep, block, offset, -+ sizeof(*inodep), &next_block, &next_offset)) -+ goto failed_read; -+ -+ frag_blk = SQUASHFS_INVALID_BLK; -+ -+ if (inodep->fragment != SQUASHFS_INVALID_FRAG) -+ if (!get_fragment_location(s, inodep->fragment, &frag_blk, -+ &frag_size)) -+ goto failed_read; -+ -+ i->i_nlink = inodep->nlink; -+ i->i_size = inodep->file_size; -+ i->i_fop = &generic_ro_fops; -+ i->i_mode |= S_IFREG; -+ i->i_blocks = ((i->i_size - 1) >> 9) + 1; -+ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; -+ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; -+ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; -+ SQUASHFS_I(i)->start_block = inodep->start_block; -+ SQUASHFS_I(i)->u.s1.block_list_start = next_block; -+ SQUASHFS_I(i)->offset = next_offset; -+ i->i_data.a_ops = &squashfs_aops; -+ -+ TRACE("File inode %x:%x, start_block %llx, " -+ "block_list_start %llx, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ inodep->start_block, next_block, -+ next_offset); -+ break; -+ } -+ case SQUASHFS_DIR_TYPE: { -+ struct squashfs_dir_inode_header *inodep = &id.dir; -+ struct squashfs_dir_inode_header *sinodep = &sid.dir; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodep, block, offset, -+ sizeof(*sinodep), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_DIR_INODE_HEADER(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, inodep, block, offset, -+ sizeof(*inodep), &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_nlink = inodep->nlink; -+ i->i_size = inodep->file_size; -+ i->i_op = &squashfs_dir_inode_ops; -+ i->i_fop = &squashfs_dir_ops; -+ i->i_mode |= S_IFDIR; -+ SQUASHFS_I(i)->start_block = inodep->start_block; -+ SQUASHFS_I(i)->offset = inodep->offset; -+ SQUASHFS_I(i)->u.s2.directory_index_count = 0; -+ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; -+ -+ TRACE("Directory inode %x:%x, start_block %x, offset " -+ "%x\n", SQUASHFS_INODE_BLK(inode), -+ offset, inodep->start_block, -+ inodep->offset); -+ break; -+ } -+ case SQUASHFS_LDIR_TYPE: { -+ struct squashfs_ldir_inode_header *inodep = &id.ldir; -+ struct squashfs_ldir_inode_header *sinodep = &sid.ldir; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodep, block, offset, -+ sizeof(*sinodep), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_LDIR_INODE_HEADER(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, inodep, block, offset, -+ sizeof(*inodep), &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_nlink = inodep->nlink; -+ i->i_size = inodep->file_size; -+ i->i_op = &squashfs_dir_inode_ops; -+ i->i_fop = &squashfs_dir_ops; -+ i->i_mode |= S_IFDIR; -+ SQUASHFS_I(i)->start_block = inodep->start_block; -+ SQUASHFS_I(i)->offset = inodep->offset; -+ SQUASHFS_I(i)->u.s2.directory_index_start = next_block; -+ SQUASHFS_I(i)->u.s2.directory_index_offset = next_offset; -+ SQUASHFS_I(i)->u.s2.directory_index_count = inodep->i_count; -+ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode; -+ -+ TRACE("Long directory inode %x:%x, start_block %x, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ inodep->start_block, inodep->offset); -+ break; -+ } -+ case SQUASHFS_SYMLINK_TYPE: { -+ struct squashfs_symlink_inode_header *inodep = &id.symlink; -+ struct squashfs_symlink_inode_header *sinodep = &sid.symlink; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodep, block, offset, -+ sizeof(*sinodep), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_SYMLINK_INODE_HEADER(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, inodep, block, offset, -+ sizeof(*inodep), &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_nlink = inodep->nlink; -+ i->i_size = inodep->symlink_size; -+ i->i_op = &page_symlink_inode_operations; -+ i->i_data.a_ops = &squashfs_symlink_aops; -+ i->i_mode |= S_IFLNK; -+ SQUASHFS_I(i)->start_block = next_block; -+ SQUASHFS_I(i)->offset = next_offset; -+ -+ TRACE("Symbolic link inode %x:%x, start_block %llx, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ next_block, next_offset); -+ break; -+ } -+ case SQUASHFS_BLKDEV_TYPE: -+ case SQUASHFS_CHRDEV_TYPE: { -+ struct squashfs_dev_inode_header *inodep = &id.dev; -+ struct squashfs_dev_inode_header *sinodep = &sid.dev; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodep, block, offset, -+ sizeof(*sinodep), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_DEV_INODE_HEADER(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, inodep, block, offset, -+ sizeof(*inodep), &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_nlink = inodep->nlink; -+ i->i_mode |= (inodeb->inode_type == SQUASHFS_CHRDEV_TYPE) ? -+ S_IFCHR : S_IFBLK; -+ init_special_inode(i, i->i_mode, old_decode_dev(inodep->rdev)); -+ -+ TRACE("Device inode %x:%x, rdev %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, inodep->rdev); -+ break; -+ } -+ case SQUASHFS_FIFO_TYPE: -+ case SQUASHFS_SOCKET_TYPE: { -+ struct squashfs_ipc_inode_header *inodep = &id.ipc; -+ struct squashfs_ipc_inode_header *sinodep = &sid.ipc; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, sinodep, block, offset, -+ sizeof(*sinodep), &next_block, &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_IPC_INODE_HEADER(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, inodep, block, offset, -+ sizeof(*inodep), &next_block, &next_offset)) -+ goto failed_read; -+ -+ i->i_nlink = inodep->nlink; -+ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE) -+ ? S_IFIFO : S_IFSOCK; -+ init_special_inode(i, i->i_mode, 0); -+ break; -+ } -+ default: -+ ERROR("Unknown inode type %d in squashfs_iget!\n", -+ inodeb->inode_type); -+ goto failed_read1; -+ } -+ -+ return 1; -+ -+failed_read: -+ ERROR("Unable to read inode [%llx:%x]\n", block, offset); -+ -+failed_read1: -+ make_bad_inode(i); -+ return 0; -+} -+ -+ -+static int read_inode_lookup_table(struct super_block *s) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ unsigned int length = SQUASHFS_LOOKUP_BLOCK_BYTES(sblk->inodes); -+ -+ TRACE("In read_inode_lookup_table, length %d\n", length); -+ -+ /* Allocate inode lookup table */ -+ msblk->inode_lookup_table = kmalloc(length, GFP_KERNEL); -+ if (msblk->inode_lookup_table == NULL) { -+ ERROR("Failed to allocate inode lookup table\n"); -+ return 0; -+ } -+ -+ if (!squashfs_read_data(s, (char *) msblk->inode_lookup_table, -+ sblk->lookup_table_start, length | -+ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, length)) { -+ ERROR("unable to read inode lookup table\n"); -+ return 0; -+ } -+ -+ if (msblk->swap) { -+ int i; -+ long long block; -+ -+ for (i = 0; i < SQUASHFS_LOOKUP_BLOCKS(sblk->inodes); i++) { -+ /* XXX */ -+ SQUASHFS_SWAP_LOOKUP_BLOCKS((&block), -+ &msblk->inode_lookup_table[i], 1); -+ msblk->inode_lookup_table[i] = block; -+ } -+ } -+ -+ return 1; -+} -+ -+ -+static int read_fragment_index_table(struct super_block *s) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ unsigned int length = SQUASHFS_FRAGMENT_INDEX_BYTES(sblk->fragments); -+ -+ if(length == 0) -+ return 1; -+ -+ /* Allocate fragment index table */ -+ msblk->fragment_index = kmalloc(length, GFP_KERNEL); -+ if (msblk->fragment_index == NULL) { -+ ERROR("Failed to allocate fragment index table\n"); -+ return 0; -+ } -+ -+ if (!squashfs_read_data(s, (char *) msblk->fragment_index, -+ sblk->fragment_table_start, length | -+ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, length)) { -+ ERROR("unable to read fragment index table\n"); -+ return 0; -+ } -+ -+ if (msblk->swap) { -+ int i; -+ long long fragment; -+ -+ for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sblk->fragments); i++) { -+ /* XXX */ -+ SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment), -+ &msblk->fragment_index[i], 1); -+ msblk->fragment_index[i] = fragment; -+ } -+ } -+ -+ return 1; -+} -+ -+ -+static int readahead_metadata(struct super_block *s) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ int i; -+ -+ squashfs_cached_blks = SQUASHFS_CACHED_BLKS; -+ -+ /* Init inode_table block pointer array */ -+ msblk->block_cache = kmalloc(sizeof(struct squashfs_cache) * -+ squashfs_cached_blks, GFP_KERNEL); -+ if (msblk->block_cache == NULL) { -+ ERROR("Failed to allocate block cache\n"); -+ goto failed; -+ } -+ -+ for (i = 0; i < squashfs_cached_blks; i++) -+ msblk->block_cache[i].block = SQUASHFS_INVALID_BLK; -+ -+ msblk->next_cache = 0; -+ msblk->unused_cache_blks = squashfs_cached_blks; -+ -+ return 1; -+ -+failed: -+ return 0; -+} -+ -+ -+static int supported_squashfs_filesystem(struct squashfs_sb_info *msblk, int silent) -+{ -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ -+ msblk->read_inode = squashfs_read_inode; -+ msblk->read_blocklist = read_blocklist; -+ msblk->read_fragment_index_table = read_fragment_index_table; -+ -+ if (sblk->s_major == 1) { -+ if (!squashfs_1_0_supported(msblk)) { -+ SERROR("Major/Minor mismatch, Squashfs 1.0 filesystems " -+ "are unsupported\n"); -+ SERROR("Please recompile with Squashfs 1.0 support enabled\n"); -+ return 0; -+ } -+ } else if (sblk->s_major == 2) { -+ if (!squashfs_2_0_supported(msblk)) { -+ SERROR("Major/Minor mismatch, Squashfs 2.0 filesystems " -+ "are unsupported\n"); -+ SERROR("Please recompile with Squashfs 2.0 support enabled\n"); -+ return 0; -+ } -+ } else if(sblk->s_major != SQUASHFS_MAJOR || sblk->s_minor > -+ SQUASHFS_MINOR) { -+ SERROR("Major/Minor mismatch, trying to mount newer %d.%d " -+ "filesystem\n", sblk->s_major, sblk->s_minor); -+ SERROR("Please update your kernel\n"); -+ return 0; -+ } -+ -+ return 1; -+} -+ -+ -+static int squashfs_fill_super(struct super_block *s, void *data, int silent) -+{ -+ struct squashfs_sb_info *msblk; -+ struct squashfs_super_block *sblk; -+ int i, err; -+ char b[BDEVNAME_SIZE]; -+ struct inode *root; -+ -+ TRACE("Entered squashfs_fill_superblock\n"); -+ -+ err = -ENOMEM; -+ s->s_fs_info = kzalloc(sizeof(struct squashfs_sb_info), GFP_KERNEL); -+ if (s->s_fs_info == NULL) { -+ ERROR("Failed to allocate superblock\n"); -+ goto failure; -+ } -+ msblk = s->s_fs_info; -+ -+ sblk = &msblk->sblk; -+ -+ msblk->devblksize = sb_min_blocksize(s, BLOCK_SIZE); -+ msblk->devblksize_log2 = ffz(~msblk->devblksize); -+ -+ //mutex_init(&msblk->read_data_mutex); -+ mutex_init(&msblk->read_page_mutex); -+ mutex_init(&msblk->block_cache_mutex); -+ mutex_init(&msblk->fragment_mutex); -+ mutex_init(&msblk->meta_index_mutex); -+ -+ init_waitqueue_head(&msblk->waitq); -+ init_waitqueue_head(&msblk->fragment_wait_queue); -+ -+ /* sblk->bytes_used is checked in squashfs_read_data to ensure reads are not -+ * beyond filesystem end. As we're using squashfs_read_data to read sblk here, -+ * first set sblk->bytes_used to a useful value */ -+ err = -EINVAL; -+ sblk->bytes_used = sizeof(struct squashfs_super_block); -+ if (!squashfs_read_data(s, (char *) sblk, SQUASHFS_START, -+ sizeof(struct squashfs_super_block) | -+ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, sizeof(struct squashfs_super_block))) { -+ SERROR("unable to read superblock\n"); -+ goto failed_mount; -+ } -+ -+ /* Check it is a SQUASHFS superblock */ -+ s->s_magic = sblk->s_magic; -+ msblk->swap = 0; -+ dpri("magic 0x%x\n", sblk->s_magic); -+ switch (sblk->s_magic) { -+ struct squashfs_super_block ssblk; -+ -+ case SQUASHFS_MAGIC_SWAP: -+ /*FALLTHROUGH*/ -+ case SQUASHFS_MAGIC_LZMA_SWAP: -+ WARNING("Mounting a different endian SQUASHFS " -+ "filesystem on %s\n", bdevname(s->s_bdev, b)); -+ -+ SQUASHFS_SWAP_SUPER_BLOCK(&ssblk, sblk); -+ memcpy(sblk, &ssblk, sizeof(struct squashfs_super_block)); -+ msblk->swap = 1; -+ /*FALLTHROUGH*/ -+ case SQUASHFS_MAGIC: -+ case SQUASHFS_MAGIC_LZMA: -+ break; -+ default: -+ SERROR("Can't find a SQUASHFS superblock on %s\n", -+ bdevname(s->s_bdev, b)); -+ goto failed_mount; -+ } -+ -+ { -+ struct sqlzma *p; -+ dpri("block_size %d\n", sblk->block_size); -+ BUG_ON(sblk->block_size > sizeof(p->read_data)); -+ } -+ -+ /* Check the MAJOR & MINOR versions */ -+ if(!supported_squashfs_filesystem(msblk, silent)) -+ goto failed_mount; -+ -+ /* Check the filesystem does not extend beyond the end of the -+ block device */ -+ if(sblk->bytes_used < 0 || sblk->bytes_used > i_size_read(s->s_bdev->bd_inode)) -+ goto failed_mount; -+ -+ /* Check the root inode for sanity */ -+ if (SQUASHFS_INODE_OFFSET(sblk->root_inode) > SQUASHFS_METADATA_SIZE) -+ goto failed_mount; -+ -+ TRACE("Found valid superblock on %s\n", bdevname(s->s_bdev, b)); -+ TRACE("Inodes are %scompressed\n", SQUASHFS_UNCOMPRESSED_INODES(sblk->flags) -+ ? "un" : ""); -+ TRACE("Data is %scompressed\n", SQUASHFS_UNCOMPRESSED_DATA(sblk->flags) -+ ? "un" : ""); -+ TRACE("Check data is %spresent in the filesystem\n", -+ SQUASHFS_CHECK_DATA(sblk->flags) ? "" : "not "); -+ TRACE("Filesystem size %lld bytes\n", sblk->bytes_used); -+ TRACE("Block size %d\n", sblk->block_size); -+ TRACE("Number of inodes %d\n", sblk->inodes); -+ if (sblk->s_major > 1) -+ TRACE("Number of fragments %d\n", sblk->fragments); -+ TRACE("Number of uids %d\n", sblk->no_uids); -+ TRACE("Number of gids %d\n", sblk->no_guids); -+ TRACE("sblk->inode_table_start %llx\n", sblk->inode_table_start); -+ TRACE("sblk->directory_table_start %llx\n", sblk->directory_table_start); -+ if (sblk->s_major > 1) -+ TRACE("sblk->fragment_table_start %llx\n", sblk->fragment_table_start); -+ TRACE("sblk->uid_start %llx\n", sblk->uid_start); -+ -+ s->s_maxbytes = MAX_LFS_FILESIZE; -+ s->s_flags |= MS_RDONLY; -+ s->s_op = &squashfs_super_ops; -+ -+ if (readahead_metadata(s) == 0) -+ goto failed_mount; -+ -+ /* Allocate read_page block */ -+ err = -ENOMEM; -+ msblk->read_page = vmalloc(sblk->block_size); -+ if (msblk->read_page == NULL) { -+ ERROR("Failed to allocate read_page block\n"); -+ goto failed_mount; -+ } -+ -+ /* Allocate uid and gid tables */ -+ msblk->uid = kmalloc((sblk->no_uids + sblk->no_guids) * -+ sizeof(unsigned int), GFP_KERNEL); -+ if (msblk->uid == NULL) { -+ ERROR("Failed to allocate uid/gid table\n"); -+ goto failed_mount; -+ } -+ msblk->guid = msblk->uid + sblk->no_uids; -+ -+ dpri("swap %d\n", msblk->swap); -+ err = -EINVAL; -+ if (msblk->swap) { -+ unsigned int *suid; -+ -+ err = -ENOMEM; -+ suid = kmalloc(sizeof(*suid) * (sblk->no_uids + sblk->no_guids), -+ GFP_KERNEL); -+ if (unlikely(!suid)) -+ goto failed_mount; -+ -+ err = -EINVAL; -+ if (!squashfs_read_data(s, (char *)suid, sblk->uid_start, -+ ((sblk->no_uids + sblk->no_guids) * -+ sizeof(unsigned int)) | -+ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, (sblk->no_uids + sblk->no_guids) * sizeof(unsigned int))) { -+ ERROR("unable to read uid/gid table\n"); -+ kfree(suid); -+ goto failed_mount; -+ } -+ -+ SQUASHFS_SWAP_DATA(msblk->uid, suid, (sblk->no_uids + -+ sblk->no_guids), (sizeof(unsigned int) * 8)); -+ kfree(suid); -+ } else -+ if (!squashfs_read_data(s, (char *) msblk->uid, sblk->uid_start, -+ ((sblk->no_uids + sblk->no_guids) * -+ sizeof(unsigned int)) | -+ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, (sblk->no_uids + sblk->no_guids) * sizeof(unsigned int))) { -+ ERROR("unable to read uid/gid table\n"); -+ goto failed_mount; -+ } -+ -+ -+ if (sblk->s_major == 1 && squashfs_1_0_supported(msblk)) -+ goto allocate_root; -+ -+ err = -ENOMEM; -+ msblk->fragment = kzalloc(sizeof(struct squashfs_fragment_cache) * -+ SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL); -+ if (msblk->fragment == NULL) { -+ ERROR("Failed to allocate fragment block cache\n"); -+ goto failed_mount; -+ } -+ -+ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) { -+ msblk->fragment[i].block = SQUASHFS_INVALID_BLK; -+ } -+ -+ msblk->next_fragment = 0; -+ msblk->unused_frag_blks = SQUASHFS_CACHED_FRAGMENTS; -+ -+ /* Allocate and read fragment index table */ -+ if (msblk->read_fragment_index_table(s) == 0) -+ goto failed_mount; -+ -+ if(sblk->s_major < 3 || sblk->lookup_table_start == SQUASHFS_INVALID_BLK) -+ goto allocate_root; -+ -+ /* Allocate and read inode lookup table */ -+ if (read_inode_lookup_table(s) == 0) -+ goto failed_mount; -+ -+ s->s_op = &squashfs_export_super_ops; -+ s->s_export_op = &squashfs_export_ops; -+ -+allocate_root: -+ dpri("alloate_root\n"); -+ root = new_inode(s); -+ if ((msblk->read_inode)(root, sblk->root_inode) == 0) { -+ iput(root); -+ goto failed_mount; -+ } -+ insert_inode_hash(root); -+ -+ s->s_root = d_alloc_root(root); -+ if (s->s_root == NULL) { -+ ERROR("Root inode create failed\n"); -+ iput(root); -+ goto failed_mount; -+ } -+ -+ TRACE("Leaving squashfs_fill_super\n"); -+ return 0; -+ -+failed_mount: -+ kfree(msblk->inode_lookup_table); -+ kfree(msblk->fragment_index); -+ kfree(msblk->fragment); -+ kfree(msblk->uid); -+ vfree(msblk->read_page); -+ kfree(msblk->block_cache); -+ kfree(msblk->fragment_index_2); -+ kfree(s->s_fs_info); -+ s->s_fs_info = NULL; -+ failure: -+ return err; -+} -+ -+ -+static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf) -+{ -+ struct squashfs_sb_info *msblk = dentry->d_sb->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ -+ TRACE("Entered squashfs_statfs\n"); -+ -+ buf->f_type = sblk->s_magic; -+ buf->f_bsize = sblk->block_size; -+ buf->f_blocks = ((sblk->bytes_used - 1) >> sblk->block_log) + 1; -+ buf->f_bfree = buf->f_bavail = 0; -+ buf->f_files = sblk->inodes; -+ buf->f_ffree = 0; -+ buf->f_namelen = SQUASHFS_NAME_LEN; -+ -+ return 0; -+} -+ -+ -+static int squashfs_symlink_readpage(struct file *file, struct page *page) -+{ -+ struct inode *inode = page->mapping->host; -+ int index = page->index << PAGE_CACHE_SHIFT, length, bytes, avail_bytes; -+ long long block = SQUASHFS_I(inode)->start_block; -+ int offset = SQUASHFS_I(inode)->offset; -+ void *pageaddr = kmap(page); -+ -+ TRACE("Entered squashfs_symlink_readpage, page index %ld, start block " -+ "%llx, offset %x\n", page->index, -+ SQUASHFS_I(inode)->start_block, -+ SQUASHFS_I(inode)->offset); -+ -+ for (length = 0; length < index; length += bytes) { -+ bytes = squashfs_get_cached_block(inode->i_sb, NULL, block, -+ offset, PAGE_CACHE_SIZE, &block, -+ (unsigned int *)&offset); -+ if (bytes == 0) { -+ ERROR("Unable to read symbolic link [%llx:%x]\n", block, offset); -+ goto skip_read; -+ } -+ } -+ -+ if (length != index) { -+ ERROR("(squashfs_symlink_readpage) length != index\n"); -+ bytes = 0; -+ goto skip_read; -+ } -+ -+ avail_bytes = min_t(int, i_size_read(inode) - length, PAGE_CACHE_SIZE); -+ -+ bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block, offset, -+ avail_bytes, &block, (unsigned int *)&offset); -+ if (bytes == 0) -+ ERROR("Unable to read symbolic link [%llx:%x]\n", block, offset); -+ -+skip_read: -+ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes); -+ kunmap(page); -+ flush_dcache_page(page); -+ SetPageUptodate(page); -+ unlock_page(page); -+ -+ return 0; -+} -+ -+ -+static struct meta_index *locate_meta_index(struct inode *inode, int index, int offset) -+{ -+ struct meta_index *meta = NULL; -+ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; -+ int i; -+ -+ mutex_lock(&msblk->meta_index_mutex); -+ -+ TRACE("locate_meta_index: index %d, offset %d\n", index, offset); -+ -+ if (msblk->meta_index == NULL) -+ goto not_allocated; -+ -+ for (i = 0; i < SQUASHFS_META_NUMBER; i ++) { -+ if (msblk->meta_index[i].inode_number == inode->i_ino && -+ msblk->meta_index[i].offset >= offset && -+ msblk->meta_index[i].offset <= index && -+ msblk->meta_index[i].locked == 0) { -+ TRACE("locate_meta_index: entry %d, offset %d\n", i, -+ msblk->meta_index[i].offset); -+ meta = &msblk->meta_index[i]; -+ offset = meta->offset; -+ } -+ } -+ -+ if (meta) -+ meta->locked = 1; -+ -+not_allocated: -+ mutex_unlock(&msblk->meta_index_mutex); -+ -+ return meta; -+} -+ -+ -+static struct meta_index *empty_meta_index(struct inode *inode, int offset, int skip) -+{ -+ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; -+ struct meta_index *meta = NULL; -+ int i; -+ -+ mutex_lock(&msblk->meta_index_mutex); -+ -+ TRACE("empty_meta_index: offset %d, skip %d\n", offset, skip); -+ -+ if (msblk->meta_index == NULL) { -+ msblk->meta_index = kmalloc(sizeof(struct meta_index) * -+ SQUASHFS_META_NUMBER, GFP_KERNEL); -+ if (msblk->meta_index == NULL) { -+ ERROR("Failed to allocate meta_index\n"); -+ goto failed; -+ } -+ for (i = 0; i < SQUASHFS_META_NUMBER; i++) { -+ msblk->meta_index[i].inode_number = 0; -+ msblk->meta_index[i].locked = 0; -+ } -+ msblk->next_meta_index = 0; -+ } -+ -+ for (i = SQUASHFS_META_NUMBER; i && -+ msblk->meta_index[msblk->next_meta_index].locked; i --) -+ msblk->next_meta_index = (msblk->next_meta_index + 1) % -+ SQUASHFS_META_NUMBER; -+ -+ if (i == 0) { -+ TRACE("empty_meta_index: failed!\n"); -+ goto failed; -+ } -+ -+ TRACE("empty_meta_index: returned meta entry %d, %p\n", -+ msblk->next_meta_index, -+ &msblk->meta_index[msblk->next_meta_index]); -+ -+ meta = &msblk->meta_index[msblk->next_meta_index]; -+ msblk->next_meta_index = (msblk->next_meta_index + 1) % -+ SQUASHFS_META_NUMBER; -+ -+ meta->inode_number = inode->i_ino; -+ meta->offset = offset; -+ meta->skip = skip; -+ meta->entries = 0; -+ meta->locked = 1; -+ -+failed: -+ mutex_unlock(&msblk->meta_index_mutex); -+ return meta; -+} -+ -+ -+static void release_meta_index(struct inode *inode, struct meta_index *meta) -+{ -+ meta->locked = 0; -+ smp_mb(); -+} -+ -+ -+static int read_block_index(struct super_block *s, int blocks, char *block_list, -+ long long *start_block, int *offset) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ unsigned int *block_listp; -+ int block = 0; -+ -+ if (msblk->swap) { -+ char *sblock_list; -+ -+ sblock_list = kmalloc(blocks << 2, GFP_KERNEL); -+ if (unlikely(!sblock_list)) -+ goto failure; -+ -+ if (!squashfs_get_cached_block(s, sblock_list, *start_block, -+ *offset, blocks << 2, start_block, (unsigned int *)offset)) { -+ ERROR("Fail reading block list [%llx:%x]\n", *start_block, *offset); -+ kfree(sblock_list); -+ goto failure; -+ } -+ SQUASHFS_SWAP_INTS(((unsigned int *)block_list), -+ ((unsigned int *)sblock_list), blocks); -+ kfree(sblock_list); -+ } else { -+ if (!squashfs_get_cached_block(s, block_list, *start_block, -+ *offset, blocks << 2, start_block, (unsigned int *)offset)) { -+ ERROR("Fail reading block list [%llx:%x]\n", *start_block, *offset); -+ goto failure; -+ } -+ } -+ -+ for (block_listp = (unsigned int *) block_list; blocks; -+ block_listp++, blocks --) -+ block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp); -+ -+ return block; -+ -+failure: -+ return -1; -+} -+ -+ -+#define SIZE 256 -+ -+static inline int calculate_skip(int blocks) { -+ int skip = (blocks - 1) / ((SQUASHFS_SLOTS * SQUASHFS_META_ENTRIES + 1) * SQUASHFS_META_INDEXES); -+ return skip >= 7 ? 7 : skip + 1; -+} -+ -+ -+static int get_meta_index(struct inode *inode, int index, -+ long long *index_block, int *index_offset, -+ long long *data_block, char *block_list) -+{ -+ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ int skip = calculate_skip(i_size_read(inode) >> sblk->block_log); -+ int offset = 0; -+ struct meta_index *meta; -+ struct meta_entry *meta_entry; -+ long long cur_index_block = SQUASHFS_I(inode)->u.s1.block_list_start; -+ int cur_offset = SQUASHFS_I(inode)->offset; -+ long long cur_data_block = SQUASHFS_I(inode)->start_block; -+ int i; -+ -+ index /= SQUASHFS_META_INDEXES * skip; -+ -+ while (offset < index) { -+ meta = locate_meta_index(inode, index, offset + 1); -+ -+ if (meta == NULL) { -+ meta = empty_meta_index(inode, offset + 1, skip); -+ if (meta == NULL) -+ goto all_done; -+ } else { -+ if(meta->entries == 0) -+ goto failed; -+ /* XXX */ -+ offset = index < meta->offset + meta->entries ? index : -+ meta->offset + meta->entries - 1; -+ /* XXX */ -+ meta_entry = &meta->meta_entry[offset - meta->offset]; -+ cur_index_block = meta_entry->index_block + sblk->inode_table_start; -+ cur_offset = meta_entry->offset; -+ cur_data_block = meta_entry->data_block; -+ TRACE("get_meta_index: offset %d, meta->offset %d, " -+ "meta->entries %d\n", offset, meta->offset, meta->entries); -+ TRACE("get_meta_index: index_block 0x%llx, offset 0x%x" -+ " data_block 0x%llx\n", cur_index_block, -+ cur_offset, cur_data_block); -+ } -+ -+ for (i = meta->offset + meta->entries; i <= index && -+ i < meta->offset + SQUASHFS_META_ENTRIES; i++) { -+ int blocks = skip * SQUASHFS_META_INDEXES; -+ -+ while (blocks) { -+ int block = blocks > (SIZE >> 2) ? (SIZE >> 2) : blocks; -+ int res = read_block_index(inode->i_sb, block, block_list, -+ &cur_index_block, &cur_offset); -+ -+ if (res == -1) -+ goto failed; -+ -+ cur_data_block += res; -+ blocks -= block; -+ } -+ -+ meta_entry = &meta->meta_entry[i - meta->offset]; -+ meta_entry->index_block = cur_index_block - sblk->inode_table_start; -+ meta_entry->offset = cur_offset; -+ meta_entry->data_block = cur_data_block; -+ meta->entries ++; -+ offset ++; -+ } -+ -+ TRACE("get_meta_index: meta->offset %d, meta->entries %d\n", -+ meta->offset, meta->entries); -+ -+ release_meta_index(inode, meta); -+ } -+ -+all_done: -+ *index_block = cur_index_block; -+ *index_offset = cur_offset; -+ *data_block = cur_data_block; -+ -+ return offset * SQUASHFS_META_INDEXES * skip; -+ -+failed: -+ release_meta_index(inode, meta); -+ return -1; -+} -+ -+ -+static long long read_blocklist(struct inode *inode, int index, -+ int readahead_blks, char *block_list, -+ unsigned short **block_p, unsigned int *bsize) -+{ -+ long long block_ptr; -+ int offset; -+ long long block; -+ int res = get_meta_index(inode, index, &block_ptr, &offset, &block, -+ block_list); -+ -+ TRACE("read_blocklist: res %d, index %d, block_ptr 0x%llx, offset" -+ " 0x%x, block 0x%llx\n", res, index, block_ptr, offset, block); -+ -+ if(res == -1) -+ goto failure; -+ -+ index -= res; -+ -+ while (index) { -+ int blocks = index > (SIZE >> 2) ? (SIZE >> 2) : index; -+ int res = read_block_index(inode->i_sb, blocks, block_list, -+ &block_ptr, &offset); -+ if (res == -1) -+ goto failure; -+ block += res; -+ index -= blocks; -+ } -+ -+ if (read_block_index(inode->i_sb, 1, block_list, &block_ptr, &offset) == -1) -+ goto failure; -+ *bsize = *((unsigned int *) block_list); -+ -+ return block; -+ -+failure: -+ return 0; -+} -+ -+ -+static int squashfs_readpage(struct file *file, struct page *page) -+{ -+ struct inode *inode = page->mapping->host; -+ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ unsigned char *block_list = NULL; -+ long long block; -+ unsigned int bsize, i; -+ int bytes; -+ int index = page->index >> (sblk->block_log - PAGE_CACHE_SHIFT); -+ void *pageaddr; -+ struct squashfs_fragment_cache *fragment = NULL; -+ char *data_ptr = msblk->read_page; -+ -+ int mask = (1 << (sblk->block_log - PAGE_CACHE_SHIFT)) - 1; -+ int start_index = page->index & ~mask; -+ int end_index = start_index | mask; -+ int file_end = i_size_read(inode) >> sblk->block_log; -+ int sparse = 0; -+ -+ TRACE("Entered squashfs_readpage, page index %lx, start block %llx\n", -+ page->index, SQUASHFS_I(inode)->start_block); -+ -+ if (page->index >= ((i_size_read(inode) + PAGE_CACHE_SIZE - 1) >> -+ PAGE_CACHE_SHIFT)) -+ goto out; -+ -+ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK -+ || index < file_end) { -+ block_list = kmalloc(SIZE, GFP_KERNEL); -+ if (block_list == NULL) { -+ ERROR("Failed to allocate block_list\n"); -+ goto error_out; -+ } -+ -+ block = (msblk->read_blocklist)(inode, index, 1, block_list, NULL, &bsize); -+ if (block == 0) -+ goto error_out; -+ -+ if (bsize == 0) { /* hole */ -+ bytes = index == file_end ? -+ (i_size_read(inode) & (sblk->block_size - 1)) : sblk->block_size; -+ sparse = 1; -+ } else { -+ mutex_lock(&msblk->read_page_mutex); -+ -+ bytes = squashfs_read_data(inode->i_sb, msblk->read_page, block, -+ bsize, NULL, sblk->block_size); -+ -+ if (bytes == 0) { -+ ERROR("Unable to read page, block %llx, size %x\n", block, bsize); -+ mutex_unlock(&msblk->read_page_mutex); -+ goto error_out; -+ } -+ } -+ } else { -+ fragment = get_cached_fragment(inode->i_sb, -+ SQUASHFS_I(inode)-> u.s1.fragment_start_block, -+ SQUASHFS_I(inode)->u.s1.fragment_size); -+ -+ if (fragment == NULL) { -+ ERROR("Unable to read page, block %llx, size %x\n", -+ SQUASHFS_I(inode)->u.s1.fragment_start_block, -+ (int) SQUASHFS_I(inode)->u.s1.fragment_size); -+ goto error_out; -+ } -+ bytes = i_size_read(inode) & (sblk->block_size - 1); -+ data_ptr = fragment->data + SQUASHFS_I(inode)->u.s1.fragment_offset; -+ } -+ -+ for (i = start_index; i <= end_index && bytes > 0; i++, -+ bytes -= PAGE_CACHE_SIZE, data_ptr += PAGE_CACHE_SIZE) { -+ struct page *push_page; -+ int avail = sparse ? 0 : min_t(unsigned int, bytes, PAGE_CACHE_SIZE); -+ -+ TRACE("bytes %d, i %d, available_bytes %d\n", bytes, i, avail); -+ -+ push_page = (i == page->index) ? page : -+ grab_cache_page_nowait(page->mapping, i); -+ -+ if (!push_page) -+ continue; -+ -+ if (PageUptodate(push_page)) -+ goto skip_page; -+ -+ pageaddr = kmap_atomic(push_page, KM_USER0); -+ memcpy(pageaddr, data_ptr, avail); -+ memset(pageaddr + avail, 0, PAGE_CACHE_SIZE - avail); -+ kunmap_atomic(pageaddr, KM_USER0); -+ flush_dcache_page(push_page); -+ SetPageUptodate(push_page); -+skip_page: -+ unlock_page(push_page); -+ if(i != page->index) -+ page_cache_release(push_page); -+ } -+ -+ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK -+ || index < file_end) { -+ if (!sparse) -+ mutex_unlock(&msblk->read_page_mutex); -+ kfree(block_list); -+ } else -+ release_cached_fragment(msblk, fragment); -+ -+ return 0; -+ -+error_out: -+ SetPageError(page); -+out: -+ pageaddr = kmap_atomic(page, KM_USER0); -+ memset(pageaddr, 0, PAGE_CACHE_SIZE); -+ kunmap_atomic(pageaddr, KM_USER0); -+ flush_dcache_page(page); -+ if (!PageError(page)) -+ SetPageUptodate(page); -+ unlock_page(page); -+ -+ kfree(block_list); -+ return 0; -+} -+ -+ -+static int get_dir_index_using_offset(struct super_block *s, -+ long long *next_block, unsigned int *next_offset, -+ long long index_start, unsigned int index_offset, int i_count, -+ long long f_pos) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ int i, length = 0; -+ struct squashfs_dir_index index; -+ -+ TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n", -+ i_count, (unsigned int) f_pos); -+ -+ f_pos =- 3; -+ if (f_pos == 0) -+ goto finish; -+ -+ for (i = 0; i < i_count; i++) { -+ if (msblk->swap) { -+ struct squashfs_dir_index sindex; -+ squashfs_get_cached_block(s, &sindex, index_start, index_offset, -+ sizeof(sindex), &index_start, &index_offset); -+ SQUASHFS_SWAP_DIR_INDEX(&index, &sindex); -+ } else -+ squashfs_get_cached_block(s, &index, index_start, index_offset, -+ sizeof(index), &index_start, &index_offset); -+ -+ if (index.index > f_pos) -+ break; -+ -+ squashfs_get_cached_block(s, NULL, index_start, index_offset, -+ index.size + 1, &index_start, &index_offset); -+ -+ length = index.index; -+ *next_block = index.start_block + sblk->directory_table_start; -+ } -+ -+ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; -+ -+finish: -+ return length + 3; -+} -+ -+ -+static int get_dir_index_using_name(struct super_block *s, -+ long long *next_block, unsigned int *next_offset, -+ long long index_start, unsigned int index_offset, int i_count, -+ const char *name, int size) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ int i, length = 0; -+ struct squashfs_dir_index *index; -+ char *str; -+ -+ TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count); -+ -+ str = kmalloc(sizeof(struct squashfs_dir_index) + -+ (SQUASHFS_NAME_LEN + 1) * 2, GFP_KERNEL); -+ if (str == NULL) { -+ ERROR("Failed to allocate squashfs_dir_index\n"); -+ goto failure; -+ } -+ -+ index = (struct squashfs_dir_index *) (str + SQUASHFS_NAME_LEN + 1); -+ strncpy(str, name, size); -+ str[size] = '\0'; -+ -+ for (i = 0; i < i_count; i++) { -+ if (msblk->swap) { -+ struct squashfs_dir_index sindex; -+ squashfs_get_cached_block(s, &sindex, index_start, index_offset, -+ sizeof(sindex), &index_start, &index_offset); -+ SQUASHFS_SWAP_DIR_INDEX(index, &sindex); -+ } else -+ squashfs_get_cached_block(s, index, index_start, index_offset, -+ sizeof(struct squashfs_dir_index), &index_start, &index_offset); -+ -+ squashfs_get_cached_block(s, index->name, index_start, index_offset, -+ index->size + 1, &index_start, &index_offset); -+ -+ index->name[index->size + 1] = '\0'; -+ -+ if (strcmp(index->name, str) > 0) -+ break; -+ -+ length = index->index; -+ *next_block = index->start_block + sblk->directory_table_start; -+ } -+ -+ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; -+ kfree(str); -+ -+failure: -+ return length + 3; -+} -+ -+ -+static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir) -+{ -+ struct inode *i = file->f_dentry->d_inode; -+ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ long long next_block = SQUASHFS_I(i)->start_block + -+ sblk->directory_table_start; -+ int next_offset = SQUASHFS_I(i)->offset, length = 0, dir_count; -+ struct squashfs_dir_header dirh; -+ struct squashfs_dir_entry *dire; -+ -+ TRACE("Entered squashfs_readdir [%llx:%x]\n", next_block, next_offset); -+ -+ dire = kmalloc(sizeof(struct squashfs_dir_entry) + -+ SQUASHFS_NAME_LEN + 1, GFP_KERNEL); -+ if (dire == NULL) { -+ ERROR("Failed to allocate squashfs_dir_entry\n"); -+ goto finish; -+ } -+ -+ while(file->f_pos < 3) { -+ char *name; -+ int size, i_ino; -+ -+ if(file->f_pos == 0) { -+ name = "."; -+ size = 1; -+ i_ino = i->i_ino; -+ } else { -+ name = ".."; -+ size = 2; -+ i_ino = SQUASHFS_I(i)->u.s2.parent_inode; -+ } -+ TRACE("Calling filldir(%x, %s, %d, %d, %d, %d)\n", -+ (unsigned int) dirent, name, size, (int) -+ file->f_pos, i_ino, squashfs_filetype_table[1]); -+ -+ if (filldir(dirent, name, size, file->f_pos, i_ino, -+ squashfs_filetype_table[1]) < 0) { -+ TRACE("Filldir returned less than 0\n"); -+ goto finish; -+ } -+ file->f_pos += size; -+ } -+ -+ length = get_dir_index_using_offset(i->i_sb, &next_block, -+ (unsigned int *)&next_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_start, -+ SQUASHFS_I(i)->u.s2.directory_index_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_count, file->f_pos); -+ -+ while (length < i_size_read(i)) { -+ /* read directory header */ -+ if (msblk->swap) { -+ struct squashfs_dir_header sdirh; -+ -+ if (!squashfs_get_cached_block(i->i_sb, &sdirh, next_block, -+ next_offset, sizeof(sdirh), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdirh); -+ SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, &dirh, next_block, -+ next_offset, sizeof(dirh), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(dirh); -+ } -+ -+ dir_count = dirh.count + 1; -+ while (dir_count--) { -+ if (msblk->swap) { -+ struct squashfs_dir_entry sdire; -+ if (!squashfs_get_cached_block(i->i_sb, &sdire, next_block, -+ next_offset, sizeof(sdire), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdire); -+ SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, dire, next_block, -+ next_offset, sizeof(*dire), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(*dire); -+ } -+ -+ if (!squashfs_get_cached_block(i->i_sb, dire->name, next_block, -+ next_offset, dire->size + 1, &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += dire->size + 1; -+ -+ if (file->f_pos >= length) -+ continue; -+ -+ dire->name[dire->size + 1] = '\0'; -+ -+ TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d, %d)\n", -+ (unsigned int) dirent, dire->name, dire->size + 1, -+ (int) file->f_pos, dirh.start_block, dire->offset, -+ dirh.inode_number + dire->inode_number, -+ squashfs_filetype_table[dire->type]); -+ -+ if (filldir(dirent, dire->name, dire->size + 1, file->f_pos, -+ dirh.inode_number + dire->inode_number, -+ squashfs_filetype_table[dire->type]) < 0) { -+ TRACE("Filldir returned less than 0\n"); -+ goto finish; -+ } -+ file->f_pos = length; -+ } -+ } -+ -+finish: -+ kfree(dire); -+ return 0; -+ -+failed_read: -+ ERROR("Unable to read directory block [%llx:%x]\n", next_block, -+ next_offset); -+ kfree(dire); -+ return 0; -+} -+ -+ -+static struct dentry *squashfs_lookup(struct inode *i, struct dentry *dentry, -+ struct nameidata *nd) -+{ -+ const unsigned char *name = dentry->d_name.name; -+ int len = dentry->d_name.len; -+ struct inode *inode = NULL; -+ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ long long next_block = SQUASHFS_I(i)->start_block + -+ sblk->directory_table_start; -+ int next_offset = SQUASHFS_I(i)->offset, length = 0, dir_count; -+ struct squashfs_dir_header dirh; -+ struct squashfs_dir_entry *dire; -+ -+ TRACE("Entered squashfs_lookup [%llx:%x]\n", next_block, next_offset); -+ -+ dire = kmalloc(sizeof(struct squashfs_dir_entry) + -+ SQUASHFS_NAME_LEN + 1, GFP_KERNEL); -+ if (dire == NULL) { -+ ERROR("Failed to allocate squashfs_dir_entry\n"); -+ goto exit_lookup; -+ } -+ -+ if (len > SQUASHFS_NAME_LEN) -+ goto exit_lookup; -+ -+ length = get_dir_index_using_name(i->i_sb, &next_block, (unsigned int *)&next_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_start, -+ SQUASHFS_I(i)->u.s2.directory_index_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_count, name, len); -+ -+ while (length < i_size_read(i)) { -+ /* read directory header */ -+ if (msblk->swap) { -+ struct squashfs_dir_header sdirh; -+ if (!squashfs_get_cached_block(i->i_sb, &sdirh, next_block, -+ next_offset, sizeof(sdirh), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdirh); -+ SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, &dirh, next_block, -+ next_offset, sizeof(dirh), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(dirh); -+ } -+ -+ dir_count = dirh.count + 1; -+ while (dir_count--) { -+ if (msblk->swap) { -+ struct squashfs_dir_entry sdire; -+ if (!squashfs_get_cached_block(i->i_sb, &sdire, next_block, -+ next_offset, sizeof(sdire), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdire); -+ SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, dire, next_block, -+ next_offset, sizeof(*dire), &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += sizeof(*dire); -+ } -+ -+ if (!squashfs_get_cached_block(i->i_sb, dire->name, next_block, -+ next_offset, dire->size + 1, &next_block, -+ (unsigned int *)&next_offset)) -+ goto failed_read; -+ -+ length += dire->size + 1; -+ -+ if (name[0] < dire->name[0]) -+ goto exit_lookup; -+ -+ if ((len == dire->size + 1) && !strncmp(name, dire->name, len)) { -+ squashfs_inode_t ino = SQUASHFS_MKINODE(dirh.start_block, -+ dire->offset); -+ -+ TRACE("calling squashfs_iget for directory entry %s, inode" -+ " %x:%x, %d\n", name, dirh.start_block, dire->offset, -+ dirh.inode_number + dire->inode_number); -+ -+ inode = squashfs_iget(i->i_sb, ino, dirh.inode_number + dire->inode_number); -+ -+ goto exit_lookup; -+ } -+ } -+ } -+ -+exit_lookup: -+ kfree(dire); -+ if (inode) -+ return d_splice_alias(inode, dentry); -+ d_add(dentry, inode); -+ return ERR_PTR(0); -+ -+failed_read: -+ ERROR("Unable to read directory block [%llx:%x]\n", next_block, -+ next_offset); -+ goto exit_lookup; -+} -+ -+ -+static int squashfs_remount(struct super_block *s, int *flags, char *data) -+{ -+ *flags |= MS_RDONLY; -+ return 0; -+} -+ -+ -+static void squashfs_put_super(struct super_block *s) -+{ -+ int i; -+ -+ if (s->s_fs_info) { -+ struct squashfs_sb_info *sbi = s->s_fs_info; -+ if (sbi->block_cache) -+ for (i = 0; i < squashfs_cached_blks; i++) -+ if (sbi->block_cache[i].block != SQUASHFS_INVALID_BLK) -+ vfree(sbi->block_cache[i].data); -+ if (sbi->fragment) -+ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) -+ vfree(sbi->fragment[i].data); -+ kfree(sbi->fragment); -+ kfree(sbi->block_cache); -+ vfree(sbi->read_page); -+ kfree(sbi->uid); -+ kfree(sbi->fragment_index); -+ kfree(sbi->fragment_index_2); -+ kfree(sbi->meta_index); -+ kfree(s->s_fs_info); -+ s->s_fs_info = NULL; -+ } -+} -+ -+ -+static int squashfs_get_sb(struct file_system_type *fs_type, int flags, -+ const char *dev_name, void *data, struct vfsmount *mnt) -+{ -+ return get_sb_bdev(fs_type, flags, dev_name, data, squashfs_fill_super, -+ mnt); -+} -+ -+static void free_sqlzma(void) -+{ -+ int cpu; -+ struct sqlzma *p; -+ -+ for_each_online_cpu(cpu) { -+ p = per_cpu(sqlzma, cpu); -+ if (p) { -+#ifdef KeepPreemptive -+ mutex_destroy(&p->mtx); -+#endif -+ sqlzma_fin(&p->un); -+ kfree(p); -+ } -+ } -+} -+ -+static int __init init_squashfs_fs(void) -+{ -+ struct sqlzma *p; -+ int cpu; -+ int err = init_inodecache(); -+ if (err) -+ goto out; -+ -+ for_each_online_cpu(cpu) { -+ dpri("%d: %p\n", cpu, per_cpu(sqlzma, cpu)); -+ err = -ENOMEM; -+ p = kmalloc(sizeof(struct sqlzma), GFP_KERNEL); -+ if (p) { -+#ifdef KeepPreemptive -+ mutex_init(&p->mtx); -+#endif -+ err = sqlzma_init(&p->un, 1, 0); -+ if (unlikely(err)) { -+ ERROR("Failed to intialize uncompress workspace\n"); -+ break; -+ } -+ per_cpu(sqlzma, cpu) = p; -+ err = 0; -+ } else -+ break; -+ } -+ if (unlikely(err)) { -+ free_sqlzma(); -+ goto out; -+ } -+ -+ printk(KERN_INFO "squashfs: version 3.3 (2007/10/31) " -+ "Phillip Lougher\n" -+ "squashfs: LZMA suppport for slax.org by jro\n"); -+ -+ err = register_filesystem(&squashfs_fs_type); -+ if (err) { -+ free_sqlzma(); -+ destroy_inodecache(); -+ } -+ -+out: -+ return err; -+} -+ -+ -+static void __exit exit_squashfs_fs(void) -+{ -+ unregister_filesystem(&squashfs_fs_type); -+ free_sqlzma(); -+ destroy_inodecache(); -+} -+ -+ -+static struct kmem_cache * squashfs_inode_cachep; -+ -+ -+static struct inode *squashfs_alloc_inode(struct super_block *sb) -+{ -+ struct squashfs_inode_info *ei; -+ ei = kmem_cache_alloc(squashfs_inode_cachep, GFP_KERNEL); -+ return ei ? &ei->vfs_inode : NULL; -+} -+ -+ -+static void squashfs_destroy_inode(struct inode *inode) -+{ -+ kmem_cache_free(squashfs_inode_cachep, SQUASHFS_I(inode)); -+} -+ -+ -+static void init_once(struct kmem_cache *cachep, void *foo) -+{ -+ struct squashfs_inode_info *ei = foo; -+ -+ inode_init_once(&ei->vfs_inode); -+} -+ -+ -+static int __init init_inodecache(void) -+{ -+ squashfs_inode_cachep = kmem_cache_create("squashfs_inode_cache", -+ sizeof(struct squashfs_inode_info), 0, -+ SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT, init_once); -+ if (squashfs_inode_cachep == NULL) -+ return -ENOMEM; -+ return 0; -+} -+ -+ -+static void destroy_inodecache(void) -+{ -+ kmem_cache_destroy(squashfs_inode_cachep); -+} -+ -+ -+module_init(init_squashfs_fs); -+module_exit(exit_squashfs_fs); -+MODULE_DESCRIPTION("squashfs 3.2-r2-CVS, a compressed read-only filesystem, and LZMA suppport for slax.org"); -+MODULE_AUTHOR("Phillip Lougher <phillip@lougher.demon.co.uk>, and LZMA suppport for slax.org by jro"); -+MODULE_LICENSE("GPL"); -diff -urN linux-2.6.23/fs/squashfs/module.c linux-2.6.23.sqlzma-ng/fs/squashfs/module.c ---- linux-2.6.23/fs/squashfs/module.c 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/module.c 2007-11-13 19:51:33.000000000 -0500 -@@ -0,0 +1,36 @@ -+ -+/* -+ * Copyright (C) 2006-2007 Junjiro Okajima -+ * Copyright (C) 2006-2007 Tomas Matejicek, slax.org -+ * -+ * LICENSE follows the described one in lzma.txt. -+ */ -+ -+/* $Id: module.c,v 1.1 2007/11/05 05:43:36 jro Exp $ */ -+ -+#include <linux/init.h> -+#include <linux/module.h> -+ -+#include "LzmaDecode.c" -+ -+EXPORT_SYMBOL(LzmaDecodeProperties); -+EXPORT_SYMBOL(LzmaDecode); -+ -+#if 0 -+static int __init unlzma_init(void) -+{ -+ return 0; -+} -+ -+static void __exit unlzma_exit(void) -+{ -+} -+ -+module_init(unlzma_init); -+module_exit(unlzma_exit); -+#endif -+ -+MODULE_LICENSE("GPL"); -+MODULE_VERSION("$Id: module.c,v 1.1 2007/11/05 05:43:36 jro Exp $"); -+MODULE_DESCRIPTION("LZMA uncompress. " -+ "A tiny wrapper for LzmaDecode.c in LZMA SDK from www.7-zip.org."); -diff -urN linux-2.6.23/fs/squashfs/sqlzma.h linux-2.6.23.sqlzma-ng/fs/squashfs/sqlzma.h ---- linux-2.6.23/fs/squashfs/sqlzma.h 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/sqlzma.h 2007-11-13 19:09:21.000000000 -0500 -@@ -0,0 +1,83 @@ -+/* -+ * Copyright (C) 2006 Junjiro Okajima -+ * Copyright (C) 2006 Tomas Matejicek, slax.org -+ * -+ * LICENSE follows the described one in lzma. -+ */ -+ -+/* $Id: sqlzma.h,v 1.15 2007/11/09 14:42:12 jro Exp $ */ -+ -+#ifndef __sqlzma_h__ -+#define __sqlzma_h__ -+ -+#ifndef __KERNEL__ -+#include <stdlib.h> -+#include <string.h> -+#include <zlib.h> -+#ifdef _REENTRANT -+#include <pthread.h> -+#endif -+#else -+#include <linux/zlib.h> -+#endif -+#define _7ZIP_BYTE_DEFINED -+ -+/* -+ * detect the compression method automatically by the first byte of compressed -+ * data. -+ * according to rfc1950, the first byte of zlib compression must be 0x?8. -+ */ -+#define is_lzma(c) (c == 0x5d) -+ -+/* ---------------------------------------------------------------------- */ -+ -+#ifdef __cplusplus -+extern "C" { -+#endif -+ -+#ifndef __KERNEL__ -+/* for mksquashfs only */ -+struct sqlzma_opts { -+ unsigned int try_lzma:1; -+ unsigned int dicsize; -+}; -+int sqlzma_cm(struct sqlzma_opts *opts, z_stream *stream, Bytef *next_in, uInt -+ avail_in, Bytef *next_out, uInt avail_out); -+#endif -+ -+/* ---------------------------------------------------------------------- */ -+/* -+ * Three patterns for sqlzma uncompression. very dirty code. -+ * - kernel space (squashfs kernel module) -+ * - user space with pthread (mksquashfs) -+ * - user space without pthread (unsquashfs) -+ */ -+ -+struct sized_buf { -+ unsigned int sz; -+ unsigned char *buf; -+}; -+ -+enum {SQUN_PROB, SQUN_RESULT, SQUN_LAST}; -+struct sqlzma_un { -+ int un_lzma; -+ struct sized_buf un_a[SQUN_LAST]; -+ unsigned char un_prob[31960]; /* unlzma 64KB - 1MB */ -+ z_stream un_stream; -+#define un_cmbuf un_stream.next_in -+#define un_cmlen un_stream.avail_in -+#define un_resbuf un_stream.next_out -+#define un_resroom un_stream.avail_out -+#define un_reslen un_stream.total_out -+}; -+ -+int sqlzma_init(struct sqlzma_un *un, int do_lzma, unsigned int res_sz); -+int sqlzma_un(struct sqlzma_un *un, struct sized_buf *src, struct sized_buf *dst); -+void sqlzma_fin(struct sqlzma_un *un); -+ -+/* ---------------------------------------------------------------------- */ -+ -+#ifdef __cplusplus -+}; -+#endif -+#endif -diff -urN linux-2.6.23/fs/squashfs/squashfs.h linux-2.6.23.sqlzma-ng/fs/squashfs/squashfs.h ---- linux-2.6.23/fs/squashfs/squashfs.h 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/squashfs.h 2007-11-13 18:58:41.000000000 -0500 -@@ -0,0 +1,86 @@ -+/* -+ * Squashfs - a compressed read only filesystem for Linux -+ * -+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007 -+ * Phillip Lougher <phillip@lougher.demon.co.uk> -+ * -+ * 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, -+ * or (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -+ * -+ * squashfs.h -+ */ -+ -+#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY -+#undef CONFIG_SQUASHFS_1_0_COMPATIBILITY -+#endif -+ -+#ifdef SQUASHFS_TRACE -+#define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args) -+#else -+#define TRACE(s, args...) {} -+#endif -+ -+#define ERROR(s, args...) printk(KERN_ERR "SQUASHFS error: "s, ## args) -+ -+#define SERROR(s, args...) do { \ -+ if (!silent) \ -+ printk(KERN_ERR "SQUASHFS error: "s, ## args);\ -+ } while(0) -+ -+#define WARNING(s, args...) printk(KERN_WARNING "SQUASHFS: "s, ## args) -+ -+static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode) -+{ -+ return list_entry(inode, struct squashfs_inode_info, vfs_inode); -+} -+ -+#if defined(CONFIG_SQUASHFS_1_0_COMPATIBILITY ) || defined(CONFIG_SQUASHFS_2_0_COMPATIBILITY) -+#define SQSH_EXTERN -+extern unsigned int squashfs_read_data(struct super_block *s, char *buffer, -+ long long index, unsigned int length, -+ long long *next_index, int srclength); -+extern int squashfs_get_cached_block(struct super_block *s, void *buffer, -+ long long block, unsigned int offset, -+ int length, long long *next_block, -+ unsigned int *next_offset); -+extern void release_cached_fragment(struct squashfs_sb_info *msblk, struct -+ squashfs_fragment_cache *fragment); -+extern struct squashfs_fragment_cache *get_cached_fragment(struct super_block -+ *s, long long start_block, -+ int length); -+extern struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode, unsigned int inode_number); -+extern const struct address_space_operations squashfs_symlink_aops; -+extern const struct address_space_operations squashfs_aops; -+extern struct inode_operations squashfs_dir_inode_ops; -+#else -+#define SQSH_EXTERN static -+#endif -+ -+#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY -+extern int squashfs_1_0_supported(struct squashfs_sb_info *msblk); -+#else -+static inline int squashfs_1_0_supported(struct squashfs_sb_info *msblk) -+{ -+ return 0; -+} -+#endif -+ -+#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY -+extern int squashfs_2_0_supported(struct squashfs_sb_info *msblk); -+#else -+static inline int squashfs_2_0_supported(struct squashfs_sb_info *msblk) -+{ -+ return 0; -+} -+#endif -diff -urN linux-2.6.23/fs/squashfs/squashfs2_0.c linux-2.6.23.sqlzma-ng/fs/squashfs/squashfs2_0.c ---- linux-2.6.23/fs/squashfs/squashfs2_0.c 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/squashfs2_0.c 2007-11-13 18:58:41.000000000 -0500 -@@ -0,0 +1,740 @@ -+/* -+ * Squashfs - a compressed read only filesystem for Linux -+ * -+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007 -+ * Phillip Lougher <phillip@lougher.demon.co.uk> -+ * -+ * 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, -+ * or (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -+ * -+ * squashfs2_0.c -+ */ -+ -+#include <linux/squashfs_fs.h> -+#include <linux/module.h> -+#include <linux/zlib.h> -+#include <linux/fs.h> -+#include <linux/squashfs_fs_sb.h> -+#include <linux/squashfs_fs_i.h> -+ -+#include "squashfs.h" -+static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir); -+static struct dentry *squashfs_lookup_2(struct inode *, struct dentry *, -+ struct nameidata *); -+ -+static struct file_operations squashfs_dir_ops_2 = { -+ .read = generic_read_dir, -+ .readdir = squashfs_readdir_2 -+}; -+ -+static struct inode_operations squashfs_dir_inode_ops_2 = { -+ .lookup = squashfs_lookup_2 -+}; -+ -+static unsigned char squashfs_filetype_table[] = { -+ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK -+}; -+ -+static int read_fragment_index_table_2(struct super_block *s) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ -+ if (!(msblk->fragment_index_2 = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES_2 -+ (sblk->fragments), GFP_KERNEL))) { -+ ERROR("Failed to allocate uid/gid table\n"); -+ return 0; -+ } -+ -+ if (SQUASHFS_FRAGMENT_INDEX_BYTES_2(sblk->fragments) && -+ !squashfs_read_data(s, (char *) -+ msblk->fragment_index_2, -+ sblk->fragment_table_start, -+ SQUASHFS_FRAGMENT_INDEX_BYTES_2 -+ (sblk->fragments) | -+ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL, SQUASHFS_FRAGMENT_INDEX_BYTES_2(sblk->fragments))) { -+ ERROR("unable to read fragment index table\n"); -+ return 0; -+ } -+ -+ if (msblk->swap) { -+ int i; -+ unsigned int fragment; -+ -+ for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES_2(sblk->fragments); -+ i++) { -+ SQUASHFS_SWAP_FRAGMENT_INDEXES_2((&fragment), -+ &msblk->fragment_index_2[i], 1); -+ msblk->fragment_index_2[i] = fragment; -+ } -+ } -+ -+ return 1; -+} -+ -+ -+static int get_fragment_location_2(struct super_block *s, unsigned int fragment, -+ long long *fragment_start_block, -+ unsigned int *fragment_size) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ long long start_block = -+ msblk->fragment_index_2[SQUASHFS_FRAGMENT_INDEX_2(fragment)]; -+ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET_2(fragment); -+ struct squashfs_fragment_entry_2 fragment_entry; -+ -+ if (msblk->swap) { -+ struct squashfs_fragment_entry_2 sfragment_entry; -+ -+ if (!squashfs_get_cached_block(s, (char *) &sfragment_entry, -+ start_block, offset, -+ sizeof(sfragment_entry), &start_block, -+ &offset)) -+ goto out; -+ SQUASHFS_SWAP_FRAGMENT_ENTRY_2(&fragment_entry, &sfragment_entry); -+ } else -+ if (!squashfs_get_cached_block(s, (char *) &fragment_entry, -+ start_block, offset, -+ sizeof(fragment_entry), &start_block, -+ &offset)) -+ goto out; -+ -+ *fragment_start_block = fragment_entry.start_block; -+ *fragment_size = fragment_entry.size; -+ -+ return 1; -+ -+out: -+ return 0; -+} -+ -+ -+static void squashfs_new_inode(struct squashfs_sb_info *msblk, struct inode *i, -+ struct squashfs_base_inode_header_2 *inodeb, unsigned int ino) -+{ -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ -+ i->i_ino = ino; -+ i->i_mtime.tv_sec = sblk->mkfs_time; -+ i->i_atime.tv_sec = sblk->mkfs_time; -+ i->i_ctime.tv_sec = sblk->mkfs_time; -+ i->i_uid = msblk->uid[inodeb->uid]; -+ i->i_mode = inodeb->mode; -+ i->i_nlink = 1; -+ i->i_size = 0; -+ if (inodeb->guid == SQUASHFS_GUIDS) -+ i->i_gid = i->i_uid; -+ else -+ i->i_gid = msblk->guid[inodeb->guid]; -+} -+ -+ -+static int squashfs_read_inode_2(struct inode *i, squashfs_inode_t inode) -+{ -+ struct super_block *s = i->i_sb; -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ unsigned int block = SQUASHFS_INODE_BLK(inode) + -+ sblk->inode_table_start; -+ unsigned int offset = SQUASHFS_INODE_OFFSET(inode); -+ unsigned int ino = SQUASHFS_MK_VFS_INODE(block - -+ sblk->inode_table_start, offset); -+ long long next_block; -+ unsigned int next_offset; -+ union squashfs_inode_header_2 id, sid; -+ struct squashfs_base_inode_header_2 *inodeb = &id.base, -+ *sinodeb = &sid.base; -+ -+ TRACE("Entered squashfs_read_inode_2\n"); -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, (char *) sinodeb, block, -+ offset, sizeof(*sinodeb), &next_block, -+ &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_BASE_INODE_HEADER_2(inodeb, sinodeb, -+ sizeof(*sinodeb)); -+ } else -+ if (!squashfs_get_cached_block(s, (char *) inodeb, block, -+ offset, sizeof(*inodeb), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ squashfs_new_inode(msblk, i, inodeb, ino); -+ -+ switch(inodeb->inode_type) { -+ case SQUASHFS_FILE_TYPE: { -+ struct squashfs_reg_inode_header_2 *inodep = &id.reg; -+ struct squashfs_reg_inode_header_2 *sinodep = &sid.reg; -+ long long frag_blk; -+ unsigned int frag_size = 0; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, (char *) -+ sinodep, block, offset, -+ sizeof(*sinodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_REG_INODE_HEADER_2(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, (char *) -+ inodep, block, offset, -+ sizeof(*inodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ frag_blk = SQUASHFS_INVALID_BLK; -+ if (inodep->fragment != SQUASHFS_INVALID_FRAG && -+ !get_fragment_location_2(s, -+ inodep->fragment, &frag_blk, &frag_size)) -+ goto failed_read; -+ -+ i->i_size = inodep->file_size; -+ i->i_fop = &generic_ro_fops; -+ i->i_mode |= S_IFREG; -+ i->i_mtime.tv_sec = inodep->mtime; -+ i->i_atime.tv_sec = inodep->mtime; -+ i->i_ctime.tv_sec = inodep->mtime; -+ i->i_blocks = ((i->i_size - 1) >> 9) + 1; -+ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk; -+ SQUASHFS_I(i)->u.s1.fragment_size = frag_size; -+ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset; -+ SQUASHFS_I(i)->start_block = inodep->start_block; -+ SQUASHFS_I(i)->u.s1.block_list_start = next_block; -+ SQUASHFS_I(i)->offset = next_offset; -+ i->i_data.a_ops = &squashfs_aops; -+ -+ TRACE("File inode %x:%x, start_block %x, " -+ "block_list_start %llx, offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ inodep->start_block, next_block, -+ next_offset); -+ break; -+ } -+ case SQUASHFS_DIR_TYPE: { -+ struct squashfs_dir_inode_header_2 *inodep = &id.dir; -+ struct squashfs_dir_inode_header_2 *sinodep = &sid.dir; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, (char *) -+ sinodep, block, offset, -+ sizeof(*sinodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_DIR_INODE_HEADER_2(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, (char *) -+ inodep, block, offset, -+ sizeof(*inodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ i->i_size = inodep->file_size; -+ i->i_op = &squashfs_dir_inode_ops_2; -+ i->i_fop = &squashfs_dir_ops_2; -+ i->i_mode |= S_IFDIR; -+ i->i_mtime.tv_sec = inodep->mtime; -+ i->i_atime.tv_sec = inodep->mtime; -+ i->i_ctime.tv_sec = inodep->mtime; -+ SQUASHFS_I(i)->start_block = inodep->start_block; -+ SQUASHFS_I(i)->offset = inodep->offset; -+ SQUASHFS_I(i)->u.s2.directory_index_count = 0; -+ SQUASHFS_I(i)->u.s2.parent_inode = 0; -+ -+ TRACE("Directory inode %x:%x, start_block %x, offset " -+ "%x\n", SQUASHFS_INODE_BLK(inode), -+ offset, inodep->start_block, -+ inodep->offset); -+ break; -+ } -+ case SQUASHFS_LDIR_TYPE: { -+ struct squashfs_ldir_inode_header_2 *inodep = &id.ldir; -+ struct squashfs_ldir_inode_header_2 *sinodep = &sid.ldir; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, (char *) -+ sinodep, block, offset, -+ sizeof(*sinodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_LDIR_INODE_HEADER_2(inodep, -+ sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, (char *) -+ inodep, block, offset, -+ sizeof(*inodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ i->i_size = inodep->file_size; -+ i->i_op = &squashfs_dir_inode_ops_2; -+ i->i_fop = &squashfs_dir_ops_2; -+ i->i_mode |= S_IFDIR; -+ i->i_mtime.tv_sec = inodep->mtime; -+ i->i_atime.tv_sec = inodep->mtime; -+ i->i_ctime.tv_sec = inodep->mtime; -+ SQUASHFS_I(i)->start_block = inodep->start_block; -+ SQUASHFS_I(i)->offset = inodep->offset; -+ SQUASHFS_I(i)->u.s2.directory_index_start = next_block; -+ SQUASHFS_I(i)->u.s2.directory_index_offset = -+ next_offset; -+ SQUASHFS_I(i)->u.s2.directory_index_count = -+ inodep->i_count; -+ SQUASHFS_I(i)->u.s2.parent_inode = 0; -+ -+ TRACE("Long directory inode %x:%x, start_block %x, " -+ "offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ inodep->start_block, inodep->offset); -+ break; -+ } -+ case SQUASHFS_SYMLINK_TYPE: { -+ struct squashfs_symlink_inode_header_2 *inodep = -+ &id.symlink; -+ struct squashfs_symlink_inode_header_2 *sinodep = -+ &sid.symlink; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, (char *) -+ sinodep, block, offset, -+ sizeof(*sinodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(inodep, -+ sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, (char *) -+ inodep, block, offset, -+ sizeof(*inodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ i->i_size = inodep->symlink_size; -+ i->i_op = &page_symlink_inode_operations; -+ i->i_data.a_ops = &squashfs_symlink_aops; -+ i->i_mode |= S_IFLNK; -+ SQUASHFS_I(i)->start_block = next_block; -+ SQUASHFS_I(i)->offset = next_offset; -+ -+ TRACE("Symbolic link inode %x:%x, start_block %llx, " -+ "offset %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ next_block, next_offset); -+ break; -+ } -+ case SQUASHFS_BLKDEV_TYPE: -+ case SQUASHFS_CHRDEV_TYPE: { -+ struct squashfs_dev_inode_header_2 *inodep = &id.dev; -+ struct squashfs_dev_inode_header_2 *sinodep = &sid.dev; -+ -+ if (msblk->swap) { -+ if (!squashfs_get_cached_block(s, (char *) -+ sinodep, block, offset, -+ sizeof(*sinodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ SQUASHFS_SWAP_DEV_INODE_HEADER_2(inodep, sinodep); -+ } else -+ if (!squashfs_get_cached_block(s, (char *) -+ inodep, block, offset, -+ sizeof(*inodep), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ i->i_mode |= (inodeb->inode_type == -+ SQUASHFS_CHRDEV_TYPE) ? S_IFCHR : -+ S_IFBLK; -+ init_special_inode(i, i->i_mode, -+ old_decode_dev(inodep->rdev)); -+ -+ TRACE("Device inode %x:%x, rdev %x\n", -+ SQUASHFS_INODE_BLK(inode), offset, -+ inodep->rdev); -+ break; -+ } -+ case SQUASHFS_FIFO_TYPE: -+ case SQUASHFS_SOCKET_TYPE: { -+ -+ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE) -+ ? S_IFIFO : S_IFSOCK; -+ init_special_inode(i, i->i_mode, 0); -+ break; -+ } -+ default: -+ ERROR("Unknown inode type %d in squashfs_iget!\n", -+ inodeb->inode_type); -+ goto failed_read1; -+ } -+ -+ return 1; -+ -+failed_read: -+ ERROR("Unable to read inode [%x:%x]\n", block, offset); -+ -+failed_read1: -+ return 0; -+} -+ -+ -+static int get_dir_index_using_offset(struct super_block *s, long long -+ *next_block, unsigned int *next_offset, -+ long long index_start, -+ unsigned int index_offset, int i_count, -+ long long f_pos) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ int i, length = 0; -+ struct squashfs_dir_index_2 index; -+ -+ TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n", -+ i_count, (unsigned int) f_pos); -+ -+ if (f_pos == 0) -+ goto finish; -+ -+ for (i = 0; i < i_count; i++) { -+ if (msblk->swap) { -+ struct squashfs_dir_index_2 sindex; -+ squashfs_get_cached_block(s, (char *) &sindex, -+ index_start, index_offset, -+ sizeof(sindex), &index_start, -+ &index_offset); -+ SQUASHFS_SWAP_DIR_INDEX_2(&index, &sindex); -+ } else -+ squashfs_get_cached_block(s, (char *) &index, -+ index_start, index_offset, -+ sizeof(index), &index_start, -+ &index_offset); -+ -+ if (index.index > f_pos) -+ break; -+ -+ squashfs_get_cached_block(s, NULL, index_start, index_offset, -+ index.size + 1, &index_start, -+ &index_offset); -+ -+ length = index.index; -+ *next_block = index.start_block + sblk->directory_table_start; -+ } -+ -+ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; -+ -+finish: -+ return length; -+} -+ -+ -+static int get_dir_index_using_name(struct super_block *s, long long -+ *next_block, unsigned int *next_offset, -+ long long index_start, -+ unsigned int index_offset, int i_count, -+ const char *name, int size) -+{ -+ struct squashfs_sb_info *msblk = s->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ int i, length = 0; -+ struct squashfs_dir_index_2 *index; -+ char *str; -+ -+ TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count); -+ -+ if (!(str = kmalloc(sizeof(struct squashfs_dir_index) + -+ (SQUASHFS_NAME_LEN + 1) * 2, GFP_KERNEL))) { -+ ERROR("Failed to allocate squashfs_dir_index\n"); -+ goto failure; -+ } -+ -+ index = (struct squashfs_dir_index_2 *) (str + SQUASHFS_NAME_LEN + 1); -+ strncpy(str, name, size); -+ str[size] = '\0'; -+ -+ for (i = 0; i < i_count; i++) { -+ if (msblk->swap) { -+ struct squashfs_dir_index_2 sindex; -+ squashfs_get_cached_block(s, (char *) &sindex, -+ index_start, index_offset, -+ sizeof(sindex), &index_start, -+ &index_offset); -+ SQUASHFS_SWAP_DIR_INDEX_2(index, &sindex); -+ } else -+ squashfs_get_cached_block(s, (char *) index, -+ index_start, index_offset, -+ sizeof(struct squashfs_dir_index_2), -+ &index_start, &index_offset); -+ -+ squashfs_get_cached_block(s, index->name, index_start, -+ index_offset, index->size + 1, -+ &index_start, &index_offset); -+ -+ index->name[index->size + 1] = '\0'; -+ -+ if (strcmp(index->name, str) > 0) -+ break; -+ -+ length = index->index; -+ *next_block = index->start_block + sblk->directory_table_start; -+ } -+ -+ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE; -+ kfree(str); -+failure: -+ return length; -+} -+ -+ -+static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir) -+{ -+ struct inode *i = file->f_dentry->d_inode; -+ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ long long next_block = SQUASHFS_I(i)->start_block + -+ sblk->directory_table_start; -+ int next_offset = SQUASHFS_I(i)->offset, length = 0, -+ dir_count; -+ struct squashfs_dir_header_2 dirh; -+ struct squashfs_dir_entry_2 *dire; -+ -+ TRACE("Entered squashfs_readdir_2 [%llx:%x]\n", next_block, next_offset); -+ -+ if (!(dire = kmalloc(sizeof(struct squashfs_dir_entry) + -+ SQUASHFS_NAME_LEN + 1, GFP_KERNEL))) { -+ ERROR("Failed to allocate squashfs_dir_entry\n"); -+ goto finish; -+ } -+ -+ length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_start, -+ SQUASHFS_I(i)->u.s2.directory_index_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_count, -+ file->f_pos); -+ -+ while (length < i_size_read(i)) { -+ /* read directory header */ -+ if (msblk->swap) { -+ struct squashfs_dir_header_2 sdirh; -+ -+ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, -+ next_block, next_offset, sizeof(sdirh), -+ &next_block, &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdirh); -+ SQUASHFS_SWAP_DIR_HEADER_2(&dirh, &sdirh); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, -+ next_block, next_offset, sizeof(dirh), -+ &next_block, &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(dirh); -+ } -+ -+ dir_count = dirh.count + 1; -+ while (dir_count--) { -+ if (msblk->swap) { -+ struct squashfs_dir_entry_2 sdire; -+ if (!squashfs_get_cached_block(i->i_sb, (char *) -+ &sdire, next_block, next_offset, -+ sizeof(sdire), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdire); -+ SQUASHFS_SWAP_DIR_ENTRY_2(dire, &sdire); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, (char *) -+ dire, next_block, next_offset, -+ sizeof(*dire), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(*dire); -+ } -+ -+ if (!squashfs_get_cached_block(i->i_sb, dire->name, -+ next_block, next_offset, -+ dire->size + 1, &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ length += dire->size + 1; -+ -+ if (file->f_pos >= length) -+ continue; -+ -+ dire->name[dire->size + 1] = '\0'; -+ -+ TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d)\n", -+ (unsigned int) dirent, dire->name, -+ dire->size + 1, (int) file->f_pos, -+ dirh.start_block, dire->offset, -+ squashfs_filetype_table[dire->type]); -+ -+ if (filldir(dirent, dire->name, dire->size + 1, -+ file->f_pos, SQUASHFS_MK_VFS_INODE( -+ dirh.start_block, dire->offset), -+ squashfs_filetype_table[dire->type]) -+ < 0) { -+ TRACE("Filldir returned less than 0\n"); -+ goto finish; -+ } -+ file->f_pos = length; -+ } -+ } -+ -+finish: -+ kfree(dire); -+ return 0; -+ -+failed_read: -+ ERROR("Unable to read directory block [%llx:%x]\n", next_block, -+ next_offset); -+ kfree(dire); -+ return 0; -+} -+ -+ -+static struct dentry *squashfs_lookup_2(struct inode *i, struct dentry *dentry, -+ struct nameidata *nd) -+{ -+ const unsigned char *name = dentry->d_name.name; -+ int len = dentry->d_name.len; -+ struct inode *inode = NULL; -+ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info; -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ long long next_block = SQUASHFS_I(i)->start_block + -+ sblk->directory_table_start; -+ int next_offset = SQUASHFS_I(i)->offset, length = 0, -+ dir_count; -+ struct squashfs_dir_header_2 dirh; -+ struct squashfs_dir_entry_2 *dire; -+ int sorted = sblk->s_major == 2 && sblk->s_minor >= 1; -+ -+ TRACE("Entered squashfs_lookup_2 [%llx:%x]\n", next_block, next_offset); -+ -+ if (!(dire = kmalloc(sizeof(struct squashfs_dir_entry) + -+ SQUASHFS_NAME_LEN + 1, GFP_KERNEL))) { -+ ERROR("Failed to allocate squashfs_dir_entry\n"); -+ goto exit_loop; -+ } -+ -+ if (len > SQUASHFS_NAME_LEN) -+ goto exit_loop; -+ -+ length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_start, -+ SQUASHFS_I(i)->u.s2.directory_index_offset, -+ SQUASHFS_I(i)->u.s2.directory_index_count, name, -+ len); -+ -+ while (length < i_size_read(i)) { -+ /* read directory header */ -+ if (msblk->swap) { -+ struct squashfs_dir_header_2 sdirh; -+ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh, -+ next_block, next_offset, sizeof(sdirh), -+ &next_block, &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdirh); -+ SQUASHFS_SWAP_DIR_HEADER_2(&dirh, &sdirh); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh, -+ next_block, next_offset, sizeof(dirh), -+ &next_block, &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(dirh); -+ } -+ -+ dir_count = dirh.count + 1; -+ while (dir_count--) { -+ if (msblk->swap) { -+ struct squashfs_dir_entry_2 sdire; -+ if (!squashfs_get_cached_block(i->i_sb, (char *) -+ &sdire, next_block,next_offset, -+ sizeof(sdire), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(sdire); -+ SQUASHFS_SWAP_DIR_ENTRY_2(dire, &sdire); -+ } else { -+ if (!squashfs_get_cached_block(i->i_sb, (char *) -+ dire, next_block,next_offset, -+ sizeof(*dire), &next_block, -+ &next_offset)) -+ goto failed_read; -+ -+ length += sizeof(*dire); -+ } -+ -+ if (!squashfs_get_cached_block(i->i_sb, dire->name, -+ next_block, next_offset, dire->size + 1, -+ &next_block, &next_offset)) -+ goto failed_read; -+ -+ length += dire->size + 1; -+ -+ if (sorted && name[0] < dire->name[0]) -+ goto exit_loop; -+ -+ if ((len == dire->size + 1) && !strncmp(name, -+ dire->name, len)) { -+ squashfs_inode_t ino = -+ SQUASHFS_MKINODE(dirh.start_block, -+ dire->offset); -+ unsigned int inode_number = SQUASHFS_MK_VFS_INODE(dirh.start_block, -+ dire->offset); -+ -+ TRACE("calling squashfs_iget for directory " -+ "entry %s, inode %x:%x, %lld\n", name, -+ dirh.start_block, dire->offset, ino); -+ -+ inode = squashfs_iget(i->i_sb, ino, inode_number); -+ -+ goto exit_loop; -+ } -+ } -+ } -+ -+exit_loop: -+ kfree(dire); -+ d_add(dentry, inode); -+ return ERR_PTR(0); -+ -+failed_read: -+ ERROR("Unable to read directory block [%llx:%x]\n", next_block, -+ next_offset); -+ goto exit_loop; -+} -+ -+ -+int squashfs_2_0_supported(struct squashfs_sb_info *msblk) -+{ -+ struct squashfs_super_block *sblk = &msblk->sblk; -+ -+ msblk->read_inode = squashfs_read_inode_2; -+ msblk->read_fragment_index_table = read_fragment_index_table_2; -+ -+ sblk->bytes_used = sblk->bytes_used_2; -+ sblk->uid_start = sblk->uid_start_2; -+ sblk->guid_start = sblk->guid_start_2; -+ sblk->inode_table_start = sblk->inode_table_start_2; -+ sblk->directory_table_start = sblk->directory_table_start_2; -+ sblk->fragment_table_start = sblk->fragment_table_start_2; -+ -+ return 1; -+} -diff -urN linux-2.6.23/fs/squashfs/uncomp.c linux-2.6.23.sqlzma-ng/fs/squashfs/uncomp.c ---- linux-2.6.23/fs/squashfs/uncomp.c 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/fs/squashfs/uncomp.c 2007-11-13 19:40:29.000000000 -0500 -@@ -0,0 +1,221 @@ -+/* -+ * Copyright (C) 2006, 2007 Junjiro Okajima -+ * Copyright (C) 2006, 2007 Tomas Matejicek, slax.org -+ * -+ * LICENSE follows the described one in lzma.txt. -+ */ -+ -+/* $Id: uncomp.c,v 1.1 2007/11/05 05:43:36 jro Exp $ */ -+ -+/* extract some parts from lzma443/C/7zip/Compress/LZMA_C/LzmaTest.c */ -+ -+#ifndef __KERNEL__ -+#include <stdio.h> -+#include <stdlib.h> -+#include <string.h> -+#include <errno.h> -+#include <assert.h> -+#include <pthread.h> -+#define unlikely(x) __builtin_expect(!!(x), 0) -+#define BUG_ON(x) assert(!(x)) -+/* sqlzma buffers are always larger than a page. true? */ -+#define kmalloc(sz,gfp) malloc(sz) -+#define kfree(p) free(p) -+#define zlib_inflate(s, f) inflate(s, f) -+#define zlib_inflateInit(s) inflateInit(s) -+#define zlib_inflateReset(s) inflateReset(s) -+#define zlib_inflateEnd(s) inflateEnd(s) -+#else -+#include <linux/init.h> -+#include <linux/module.h> -+#include <linux/kernel.h> -+#include <linux/vmalloc.h> -+#ifndef WARN_ON_ONCE -+#define WARN_ON_ONCE(b) WARN_ON(b) -+#endif -+#endif /* __KERNEL__ */ -+ -+#include "sqlzma.h" -+#include "LzmaDecode.h" -+ -+static int LzmaUncompress(struct sqlzma_un *un) -+{ -+ int err, i, ret; -+ SizeT outSize, inProcessed, outProcessed, srclen; -+ /* it's about 24-80 bytes structure, if int is 32-bit */ -+ CLzmaDecoderState state; -+ unsigned char *dst, *src, a[8]; -+ struct sized_buf *sbuf; -+ -+ /* Decode LZMA properties and allocate memory */ -+ err = -EINVAL; -+ src = un->un_cmbuf; -+ ret = LzmaDecodeProperties(&state.Properties, src, LZMA_PROPERTIES_SIZE); -+ src += LZMA_PROPERTIES_SIZE; -+ if (unlikely(ret != LZMA_RESULT_OK)) -+ goto out; -+ i = LzmaGetNumProbs(&state.Properties); -+ if (unlikely(i <= 0)) -+ i = 1; -+ i *= sizeof(CProb); -+ sbuf = un->un_a + SQUN_PROB; -+ if (unlikely(sbuf->sz < i)) { -+ if (sbuf->buf && sbuf->buf != un->un_prob) -+ kfree(sbuf->buf); -+#ifdef __KERNEL__ -+ printk("%s:%d: %d --> %d\n", __func__, __LINE__, sbuf->sz, i); -+#else -+ printf("%d --> %d\n", sbuf->sz, i); -+#endif -+ err = -ENOMEM; -+ sbuf->sz = 0; -+ sbuf->buf = kmalloc(i, GFP_ATOMIC); -+ if (unlikely(!sbuf->buf)) -+ goto out; -+ sbuf->sz = i; -+ } -+ state.Probs = (void*)sbuf->buf; -+ -+ /* Read uncompressed size */ -+ memcpy(a, src, sizeof(a)); -+ src += sizeof(a); -+ outSize = a[0] | (a[1] << 8) | (a[2] << 16) | (a[3] << 24); -+ -+ err = -EINVAL; -+ dst = un->un_resbuf; -+ if (unlikely(!dst || outSize > un->un_reslen)) -+ goto out; -+ un->un_reslen = outSize; -+ srclen = un->un_cmlen - (src - un->un_cmbuf); -+ -+ /* Decompress */ -+ err = LzmaDecode(&state, src, srclen, &inProcessed, dst, outSize, -+ &outProcessed); -+ if (err) -+ err = -EINVAL; -+ -+ out: -+#ifndef __KERNEL__ -+ if (err) -+ fprintf(stderr, "err %d\n", err); -+#endif -+ return err; -+} -+ -+int sqlzma_un(struct sqlzma_un *un, struct sized_buf *src, -+ struct sized_buf *dst) -+{ -+ int err, by_lzma = 0; -+ if (un->un_lzma && is_lzma(*src->buf)) { -+ by_lzma = 1; -+ un->un_cmbuf = src->buf; -+ un->un_cmlen = src->sz; -+ un->un_resbuf = dst->buf; -+ un->un_reslen = dst->sz; -+ -+ /* this library is thread-safe */ -+ err = LzmaUncompress(un); -+ goto out; -+ } -+ -+ err = zlib_inflateReset(&un->un_stream); -+ if (unlikely(err != Z_OK)) -+ goto out; -+ un->un_stream.next_in = src->buf; -+ un->un_stream.avail_in = src->sz; -+ un->un_stream.next_out = dst->buf; -+ un->un_stream.avail_out = dst->sz; -+ err = zlib_inflate(&un->un_stream, Z_FINISH); -+ if (err == Z_STREAM_END) -+ err = 0; -+ -+ out: -+ if (err) { -+#ifdef __KERNEL__ -+ WARN_ON_ONCE(1); -+#else -+ char a[64] = "ZLIB "; -+ if (by_lzma) { -+ strcpy(a, "LZMA "); -+#ifdef _REENTRANT -+ strerror_r(err, a + 5, sizeof(a) - 5); -+#else -+ strncat(a, strerror(err), sizeof(a) - 5); -+#endif -+ } else -+ strncat(a, zError(err), sizeof(a) - 5); -+ fprintf(stderr, "%s: %.*s\n", __func__, sizeof(a), a); -+#endif -+ } -+ return err; -+} -+ -+int sqlzma_init(struct sqlzma_un *un, int do_lzma, unsigned int res_sz) -+{ -+ int err; -+ -+ err = -ENOMEM; -+ un->un_lzma = do_lzma; -+ memset(un->un_a, 0, sizeof(un->un_a)); -+ un->un_a[SQUN_PROB].buf = un->un_prob; -+ un->un_a[SQUN_PROB].sz = sizeof(un->un_prob); -+ if (res_sz) { -+ un->un_a[SQUN_RESULT].buf = kmalloc(res_sz, GFP_KERNEL); -+ if (unlikely(!un->un_a[SQUN_RESULT].buf)) -+ return err; -+ un->un_a[SQUN_RESULT].sz = res_sz; -+ } -+ -+ un->un_stream.next_in = NULL; -+ un->un_stream.avail_in = 0; -+#ifdef __KERNEL__ -+ un->un_stream.workspace = kmalloc(zlib_inflate_workspacesize(), GFP_KERNEL); -+ if (unlikely(!un->un_stream.workspace)) -+ return err; -+#else -+ un->un_stream.opaque = NULL; -+ un->un_stream.zalloc = Z_NULL; -+ un->un_stream.zfree = Z_NULL; -+#endif -+ err = zlib_inflateInit(&un->un_stream); -+ if (unlikely(err == Z_MEM_ERROR)) -+ return -ENOMEM; -+ BUG_ON(err); -+ return err; -+} -+ -+void sqlzma_fin(struct sqlzma_un *un) -+{ -+ int i; -+ for (i = 0; i < SQUN_LAST; i++) -+ if (un->un_a[i].buf && un->un_a[i].buf != un->un_prob) -+ kfree(un->un_a[i].buf); -+ BUG_ON(zlib_inflateEnd(&un->un_stream) != Z_OK); -+} -+ -+#ifdef __KERNEL__ -+EXPORT_SYMBOL(sqlzma_un); -+EXPORT_SYMBOL(sqlzma_init); -+EXPORT_SYMBOL(sqlzma_fin); -+ -+#if 0 -+static int __init sqlzma_init(void) -+{ -+ return 0; -+} -+ -+static void __exit sqlzma_exit(void) -+{ -+} -+ -+module_init(sqlzma_init); -+module_exit(sqlzma_exit); -+#endif -+ -+MODULE_LICENSE("GPL"); -+MODULE_AUTHOR("Junjiro Okajima <sfjro at users dot sf dot net>"); -+MODULE_VERSION("$Id: uncomp.c,v 1.1 2007/11/05 05:43:36 jro Exp $"); -+MODULE_DESCRIPTION("LZMA uncompress for squashfs. " -+ "Some functions for squashfs to support LZMA and " -+ "a tiny wrapper for LzmaDecode.c in LZMA SDK from www.7-zip.org."); -+#endif -diff -urN linux-2.6.23/include/linux/squashfs_fs.h linux-2.6.23.sqlzma-ng/include/linux/squashfs_fs.h ---- linux-2.6.23/include/linux/squashfs_fs.h 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/include/linux/squashfs_fs.h 2007-11-13 19:12:41.000000000 -0500 -@@ -0,0 +1,937 @@ -+#ifndef SQUASHFS_FS -+#define SQUASHFS_FS -+ -+/* -+ * Squashfs -+ * -+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007 -+ * Phillip Lougher <phillip@lougher.demon.co.uk> -+ * -+ * 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, -+ * or (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -+ * -+ * squashfs_fs.h -+ */ -+ -+#ifndef CONFIG_SQUASHFS_2_0_COMPATIBILITY -+#define CONFIG_SQUASHFS_2_0_COMPATIBILITY -+#endif -+ -+#define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE -+#define SQUASHFS_MAJOR 3 -+#define SQUASHFS_MINOR 1 -+#define SQUASHFS_MAGIC 0x73717368 -+#define SQUASHFS_MAGIC_SWAP 0x68737173 -+#define SQUASHFS_MAGIC_LZMA 0x71736873 -+#define SQUASHFS_MAGIC_LZMA_SWAP 0x73687371 -+#define SQUASHFS_START 0 -+ -+/* size of metadata (inode and directory) blocks */ -+#define SQUASHFS_METADATA_SIZE 8192 -+#define SQUASHFS_METADATA_LOG 13 -+ -+/* default size of data blocks */ -+#define SQUASHFS_FILE_SIZE 131072 -+#define SQUASHFS_FILE_LOG 17 -+ -+#define SQUASHFS_FILE_MAX_SIZE 1048576 -+ -+/* Max number of uids and gids */ -+#define SQUASHFS_UIDS 256 -+#define SQUASHFS_GUIDS 255 -+ -+/* Max length of filename (not 255) */ -+#define SQUASHFS_NAME_LEN 256 -+ -+#define SQUASHFS_INVALID ((long long) 0xffffffffffff) -+#define SQUASHFS_INVALID_FRAG ((unsigned int) 0xffffffff) -+#define SQUASHFS_INVALID_BLK ((long long) -1) -+#define SQUASHFS_USED_BLK ((long long) -2) -+ -+/* Filesystem flags */ -+#define SQUASHFS_NOI 0 -+#define SQUASHFS_NOD 1 -+#define SQUASHFS_CHECK 2 -+#define SQUASHFS_NOF 3 -+#define SQUASHFS_NO_FRAG 4 -+#define SQUASHFS_ALWAYS_FRAG 5 -+#define SQUASHFS_DUPLICATE 6 -+#define SQUASHFS_EXPORT 7 -+ -+#define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1) -+ -+#define SQUASHFS_UNCOMPRESSED_INODES(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_NOI) -+ -+#define SQUASHFS_UNCOMPRESSED_DATA(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_NOD) -+ -+#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_NOF) -+ -+#define SQUASHFS_NO_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_NO_FRAG) -+ -+#define SQUASHFS_ALWAYS_FRAGMENTS(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_ALWAYS_FRAG) -+ -+#define SQUASHFS_DUPLICATES(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_DUPLICATE) -+ -+#define SQUASHFS_EXPORTABLE(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_EXPORT) -+ -+#define SQUASHFS_CHECK_DATA(flags) SQUASHFS_BIT(flags, \ -+ SQUASHFS_CHECK) -+ -+#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, \ -+ duplicate_checking, exportable) (noi | (nod << 1) | (check_data << 2) \ -+ | (nof << 3) | (no_frag << 4) | (always_frag << 5) | \ -+ (duplicate_checking << 6) | (exportable << 7)) -+ -+/* Max number of types and file types */ -+#define SQUASHFS_DIR_TYPE 1 -+#define SQUASHFS_FILE_TYPE 2 -+#define SQUASHFS_SYMLINK_TYPE 3 -+#define SQUASHFS_BLKDEV_TYPE 4 -+#define SQUASHFS_CHRDEV_TYPE 5 -+#define SQUASHFS_FIFO_TYPE 6 -+#define SQUASHFS_SOCKET_TYPE 7 -+#define SQUASHFS_LDIR_TYPE 8 -+#define SQUASHFS_LREG_TYPE 9 -+ -+/* 1.0 filesystem type definitions */ -+#define SQUASHFS_TYPES 5 -+#define SQUASHFS_IPC_TYPE 0 -+ -+/* Flag whether block is compressed or uncompressed, bit is set if block is -+ * uncompressed */ -+#define SQUASHFS_COMPRESSED_BIT (1 << 15) -+ -+#define SQUASHFS_COMPRESSED_SIZE(B) (((B) & ~SQUASHFS_COMPRESSED_BIT) ? \ -+ (B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT) -+ -+#define SQUASHFS_COMPRESSED(B) (!((B) & SQUASHFS_COMPRESSED_BIT)) -+ -+#define SQUASHFS_COMPRESSED_BIT_BLOCK (1 << 24) -+ -+#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B) ((B) & \ -+ ~SQUASHFS_COMPRESSED_BIT_BLOCK) -+ -+#define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK)) -+ -+/* -+ * Inode number ops. Inodes consist of a compressed block number, and an -+ * uncompressed offset within that block -+ */ -+#define SQUASHFS_INODE_BLK(a) ((unsigned int) ((a) >> 16)) -+ -+#define SQUASHFS_INODE_OFFSET(a) ((unsigned int) ((a) & 0xffff)) -+ -+#define SQUASHFS_MKINODE(A, B) ((squashfs_inode_t)(((squashfs_inode_t) (A)\ -+ << 16) + (B))) -+ -+/* Compute 32 bit VFS inode number from squashfs inode number */ -+#define SQUASHFS_MK_VFS_INODE(a, b) ((unsigned int) (((a) << 8) + \ -+ ((b) >> 2) + 1)) -+/* XXX */ -+ -+/* Translate between VFS mode and squashfs mode */ -+#define SQUASHFS_MODE(a) ((a) & 0xfff) -+ -+/* fragment and fragment table defines */ -+#define SQUASHFS_FRAGMENT_BYTES(A) ((A) * sizeof(struct squashfs_fragment_entry)) -+ -+#define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + \ -+ SQUASHFS_METADATA_SIZE - 1) / \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) *\ -+ sizeof(long long)) -+ -+/* inode lookup table defines */ -+#define SQUASHFS_LOOKUP_BYTES(A) ((A) * sizeof(squashfs_inode_t)) -+ -+#define SQUASHFS_LOOKUP_BLOCK(A) (SQUASHFS_LOOKUP_BYTES(A) / \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_LOOKUP_BLOCK_OFFSET(A) (SQUASHFS_LOOKUP_BYTES(A) % \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_LOOKUP_BLOCKS(A) ((SQUASHFS_LOOKUP_BYTES(A) + \ -+ SQUASHFS_METADATA_SIZE - 1) / \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_LOOKUP_BLOCK_BYTES(A) (SQUASHFS_LOOKUP_BLOCKS(A) *\ -+ sizeof(long long)) -+ -+/* cached data constants for filesystem */ -+#define SQUASHFS_CACHED_BLKS 8 -+ -+#define SQUASHFS_MAX_FILE_SIZE_LOG 64 -+ -+#define SQUASHFS_MAX_FILE_SIZE ((long long) 1 << \ -+ (SQUASHFS_MAX_FILE_SIZE_LOG - 2)) -+ -+#define SQUASHFS_MARKER_BYTE 0xff -+ -+/* meta index cache */ -+#define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int)) -+#define SQUASHFS_META_ENTRIES 31 -+#define SQUASHFS_META_NUMBER 8 -+#define SQUASHFS_SLOTS 4 -+ -+struct meta_entry { -+ long long data_block; -+ unsigned int index_block; -+ unsigned short offset; -+ unsigned short pad; -+}; -+ -+struct meta_index { -+ unsigned int inode_number; -+ unsigned int offset; -+ unsigned short entries; -+ unsigned short skip; -+ unsigned short locked; -+ unsigned short pad; -+ struct meta_entry meta_entry[SQUASHFS_META_ENTRIES]; -+}; -+ -+ -+/* -+ * definitions for structures on disk -+ */ -+ -+typedef long long squashfs_block_t; -+typedef long long squashfs_inode_t; -+ -+struct squashfs_super_block { -+ unsigned int s_magic; -+ unsigned int inodes; -+ unsigned int bytes_used_2; -+ unsigned int uid_start_2; -+ unsigned int guid_start_2; -+ unsigned int inode_table_start_2; -+ unsigned int directory_table_start_2; -+ unsigned int s_major:16; -+ unsigned int s_minor:16; -+ unsigned int block_size_1:16; -+ unsigned int block_log:16; -+ unsigned int flags:8; -+ unsigned int no_uids:8; -+ unsigned int no_guids:8; -+ unsigned int mkfs_time /* time of filesystem creation */; -+ squashfs_inode_t root_inode; -+ unsigned int block_size; -+ unsigned int fragments; -+ unsigned int fragment_table_start_2; -+ long long bytes_used; -+ long long uid_start; -+ long long guid_start; -+ long long inode_table_start; -+ long long directory_table_start; -+ long long fragment_table_start; -+ long long lookup_table_start; -+} __attribute__ ((packed)); -+ -+struct squashfs_dir_index { -+ unsigned int index; -+ unsigned int start_block; -+ unsigned char size; -+ unsigned char name[0]; -+} __attribute__ ((packed)); -+ -+#define SQUASHFS_BASE_INODE_HEADER \ -+ unsigned int inode_type:4; \ -+ unsigned int mode:12; \ -+ unsigned int uid:8; \ -+ unsigned int guid:8; \ -+ unsigned int mtime; \ -+ unsigned int inode_number; -+ -+struct squashfs_base_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+} __attribute__ ((packed)); -+ -+struct squashfs_ipc_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+ unsigned int nlink; -+} __attribute__ ((packed)); -+ -+struct squashfs_dev_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+ unsigned int nlink; -+ unsigned short rdev; -+} __attribute__ ((packed)); -+ -+struct squashfs_symlink_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+ unsigned int nlink; -+ unsigned short symlink_size; -+ char symlink[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_reg_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+ squashfs_block_t start_block; -+ unsigned int fragment; -+ unsigned int offset; -+ unsigned int file_size; -+ unsigned short block_list[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_lreg_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+ unsigned int nlink; -+ squashfs_block_t start_block; -+ unsigned int fragment; -+ unsigned int offset; -+ long long file_size; -+ unsigned short block_list[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_dir_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+ unsigned int nlink; -+ unsigned int file_size:19; -+ unsigned int offset:13; -+ unsigned int start_block; -+ unsigned int parent_inode; -+} __attribute__ ((packed)); -+ -+struct squashfs_ldir_inode_header { -+ SQUASHFS_BASE_INODE_HEADER; -+ unsigned int nlink; -+ unsigned int file_size:27; -+ unsigned int offset:13; -+ unsigned int start_block; -+ unsigned int i_count:16; -+ unsigned int parent_inode; -+ struct squashfs_dir_index index[0]; -+} __attribute__ ((packed)); -+ -+union squashfs_inode_header { -+ struct squashfs_base_inode_header base; -+ struct squashfs_dev_inode_header dev; -+ struct squashfs_symlink_inode_header symlink; -+ struct squashfs_reg_inode_header reg; -+ struct squashfs_lreg_inode_header lreg; -+ struct squashfs_dir_inode_header dir; -+ struct squashfs_ldir_inode_header ldir; -+ struct squashfs_ipc_inode_header ipc; -+}; -+ -+struct squashfs_dir_entry { -+ unsigned int offset:13; -+ unsigned int type:3; -+ unsigned int size:8; -+ unsigned int inode_number:16; -+ char name[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_dir_header { -+ unsigned int count:8; -+ unsigned int start_block; -+ unsigned int inode_number; -+} __attribute__ ((packed)); -+ -+struct squashfs_fragment_entry { -+ long long start_block; -+ unsigned int size; -+ unsigned int pending; -+} __attribute__ ((packed)); -+ -+extern int squashfs_uncompress_block(void *d, int dstlen, void *s, int srclen); -+extern int squashfs_uncompress_init(void); -+extern int squashfs_uncompress_exit(void); -+ -+/* -+ * macros to convert each packed bitfield structure from little endian to big -+ * endian and vice versa. These are needed when creating or using a filesystem -+ * on a machine with different byte ordering to the target architecture. -+ * -+ */ -+ -+#define SQUASHFS_SWAP_START \ -+ int bits;\ -+ int b_pos;\ -+ unsigned long long val;\ -+ unsigned char *s;\ -+ unsigned char *d; -+ -+#define SQUASHFS_SWAP_SUPER_BLOCK(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_super_block));\ -+ SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\ -+ SQUASHFS_SWAP((s)->inodes, d, 32, 32);\ -+ SQUASHFS_SWAP((s)->bytes_used_2, d, 64, 32);\ -+ SQUASHFS_SWAP((s)->uid_start_2, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->guid_start_2, d, 128, 32);\ -+ SQUASHFS_SWAP((s)->inode_table_start_2, d, 160, 32);\ -+ SQUASHFS_SWAP((s)->directory_table_start_2, d, 192, 32);\ -+ SQUASHFS_SWAP((s)->s_major, d, 224, 16);\ -+ SQUASHFS_SWAP((s)->s_minor, d, 240, 16);\ -+ SQUASHFS_SWAP((s)->block_size_1, d, 256, 16);\ -+ SQUASHFS_SWAP((s)->block_log, d, 272, 16);\ -+ SQUASHFS_SWAP((s)->flags, d, 288, 8);\ -+ SQUASHFS_SWAP((s)->no_uids, d, 296, 8);\ -+ SQUASHFS_SWAP((s)->no_guids, d, 304, 8);\ -+ SQUASHFS_SWAP((s)->mkfs_time, d, 312, 32);\ -+ SQUASHFS_SWAP((s)->root_inode, d, 344, 64);\ -+ SQUASHFS_SWAP((s)->block_size, d, 408, 32);\ -+ SQUASHFS_SWAP((s)->fragments, d, 440, 32);\ -+ SQUASHFS_SWAP((s)->fragment_table_start_2, d, 472, 32);\ -+ SQUASHFS_SWAP((s)->bytes_used, d, 504, 64);\ -+ SQUASHFS_SWAP((s)->uid_start, d, 568, 64);\ -+ SQUASHFS_SWAP((s)->guid_start, d, 632, 64);\ -+ SQUASHFS_SWAP((s)->inode_table_start, d, 696, 64);\ -+ SQUASHFS_SWAP((s)->directory_table_start, d, 760, 64);\ -+ SQUASHFS_SWAP((s)->fragment_table_start, d, 824, 64);\ -+ SQUASHFS_SWAP((s)->lookup_table_start, d, 888, 64);\ -+} -+ -+#define SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\ -+ SQUASHFS_MEMSET(s, d, n);\ -+ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ -+ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ -+ SQUASHFS_SWAP((s)->uid, d, 16, 8);\ -+ SQUASHFS_SWAP((s)->guid, d, 24, 8);\ -+ SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ -+ SQUASHFS_SWAP((s)->inode_number, d, 64, 32); -+ -+#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\ -+} -+ -+#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ -+ sizeof(struct squashfs_ipc_inode_header))\ -+ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ -+} -+ -+#define SQUASHFS_SWAP_DEV_INODE_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ -+ sizeof(struct squashfs_dev_inode_header)); \ -+ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->rdev, d, 128, 16);\ -+} -+ -+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ -+ sizeof(struct squashfs_symlink_inode_header));\ -+ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->symlink_size, d, 128, 16);\ -+} -+ -+#define SQUASHFS_SWAP_REG_INODE_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ -+ sizeof(struct squashfs_reg_inode_header));\ -+ SQUASHFS_SWAP((s)->start_block, d, 96, 64);\ -+ SQUASHFS_SWAP((s)->fragment, d, 160, 32);\ -+ SQUASHFS_SWAP((s)->offset, d, 192, 32);\ -+ SQUASHFS_SWAP((s)->file_size, d, 224, 32);\ -+} -+ -+#define SQUASHFS_SWAP_LREG_INODE_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ -+ sizeof(struct squashfs_lreg_inode_header));\ -+ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 128, 64);\ -+ SQUASHFS_SWAP((s)->fragment, d, 192, 32);\ -+ SQUASHFS_SWAP((s)->offset, d, 224, 32);\ -+ SQUASHFS_SWAP((s)->file_size, d, 256, 64);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_INODE_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ -+ sizeof(struct squashfs_dir_inode_header));\ -+ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->file_size, d, 128, 19);\ -+ SQUASHFS_SWAP((s)->offset, d, 147, 13);\ -+ SQUASHFS_SWAP((s)->start_block, d, 160, 32);\ -+ SQUASHFS_SWAP((s)->parent_inode, d, 192, 32);\ -+} -+ -+#define SQUASHFS_SWAP_LDIR_INODE_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \ -+ sizeof(struct squashfs_ldir_inode_header));\ -+ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->file_size, d, 128, 27);\ -+ SQUASHFS_SWAP((s)->offset, d, 155, 13);\ -+ SQUASHFS_SWAP((s)->start_block, d, 168, 32);\ -+ SQUASHFS_SWAP((s)->i_count, d, 200, 16);\ -+ SQUASHFS_SWAP((s)->parent_inode, d, 216, 32);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_INDEX(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index));\ -+ SQUASHFS_SWAP((s)->index, d, 0, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 32, 32);\ -+ SQUASHFS_SWAP((s)->size, d, 64, 8);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_HEADER(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header));\ -+ SQUASHFS_SWAP((s)->count, d, 0, 8);\ -+ SQUASHFS_SWAP((s)->start_block, d, 8, 32);\ -+ SQUASHFS_SWAP((s)->inode_number, d, 40, 32);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry));\ -+ SQUASHFS_SWAP((s)->offset, d, 0, 13);\ -+ SQUASHFS_SWAP((s)->type, d, 13, 3);\ -+ SQUASHFS_SWAP((s)->size, d, 16, 8);\ -+ SQUASHFS_SWAP((s)->inode_number, d, 24, 16);\ -+} -+ -+#define SQUASHFS_SWAP_FRAGMENT_ENTRY(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry));\ -+ SQUASHFS_SWAP((s)->start_block, d, 0, 64);\ -+ SQUASHFS_SWAP((s)->size, d, 64, 32);\ -+} -+ -+#define SQUASHFS_SWAP_INODE_T(s, d) SQUASHFS_SWAP_LONG_LONGS(s, d, 1) -+ -+#define SQUASHFS_SWAP_SHORTS(s, d, n) {\ -+ int entry;\ -+ int bit_position;\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, n * 2);\ -+ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ -+ 16)\ -+ SQUASHFS_SWAP(s[entry], d, bit_position, 16);\ -+} -+ -+#define SQUASHFS_SWAP_INTS(s, d, n) {\ -+ int entry;\ -+ int bit_position;\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, n * 4);\ -+ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ -+ 32)\ -+ SQUASHFS_SWAP(s[entry], d, bit_position, 32);\ -+} -+ -+#define SQUASHFS_SWAP_LONG_LONGS(s, d, n) {\ -+ int entry;\ -+ int bit_position;\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, n * 8);\ -+ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ -+ 64)\ -+ SQUASHFS_SWAP(s[entry], d, bit_position, 64);\ -+} -+ -+#define SQUASHFS_SWAP_DATA(s, d, n, bits) {\ -+ int entry;\ -+ int bit_position;\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, n * bits / 8);\ -+ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \ -+ bits)\ -+ SQUASHFS_SWAP(s[entry], d, bit_position, bits);\ -+} -+ -+#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_LONG_LONGS(s, d, n) -+#define SQUASHFS_SWAP_LOOKUP_BLOCKS(s, d, n) SQUASHFS_SWAP_LONG_LONGS(s, d, n) -+ -+#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY -+ -+struct squashfs_base_inode_header_1 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:4; /* index into uid table */ -+ unsigned int guid:4; /* index into guid table */ -+} __attribute__ ((packed)); -+ -+struct squashfs_ipc_inode_header_1 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:4; /* index into uid table */ -+ unsigned int guid:4; /* index into guid table */ -+ unsigned int type:4; -+ unsigned int offset:4; -+} __attribute__ ((packed)); -+ -+struct squashfs_dev_inode_header_1 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:4; /* index into uid table */ -+ unsigned int guid:4; /* index into guid table */ -+ unsigned short rdev; -+} __attribute__ ((packed)); -+ -+struct squashfs_symlink_inode_header_1 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:4; /* index into uid table */ -+ unsigned int guid:4; /* index into guid table */ -+ unsigned short symlink_size; -+ char symlink[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_reg_inode_header_1 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:4; /* index into uid table */ -+ unsigned int guid:4; /* index into guid table */ -+ unsigned int mtime; -+ unsigned int start_block; -+ unsigned int file_size:32; -+ unsigned short block_list[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_dir_inode_header_1 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:4; /* index into uid table */ -+ unsigned int guid:4; /* index into guid table */ -+ unsigned int file_size:19; -+ unsigned int offset:13; -+ unsigned int mtime; -+ unsigned int start_block:24; -+} __attribute__ ((packed)); -+ -+union squashfs_inode_header_1 { -+ struct squashfs_base_inode_header_1 base; -+ struct squashfs_dev_inode_header_1 dev; -+ struct squashfs_symlink_inode_header_1 symlink; -+ struct squashfs_reg_inode_header_1 reg; -+ struct squashfs_dir_inode_header_1 dir; -+ struct squashfs_ipc_inode_header_1 ipc; -+}; -+ -+#define SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n) \ -+ SQUASHFS_MEMSET(s, d, n);\ -+ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ -+ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ -+ SQUASHFS_SWAP((s)->uid, d, 16, 4);\ -+ SQUASHFS_SWAP((s)->guid, d, 20, 4); -+ -+#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n)\ -+} -+ -+#define SQUASHFS_SWAP_IPC_INODE_HEADER_1(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ -+ sizeof(struct squashfs_ipc_inode_header_1));\ -+ SQUASHFS_SWAP((s)->type, d, 24, 4);\ -+ SQUASHFS_SWAP((s)->offset, d, 28, 4);\ -+} -+ -+#define SQUASHFS_SWAP_DEV_INODE_HEADER_1(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ -+ sizeof(struct squashfs_dev_inode_header_1));\ -+ SQUASHFS_SWAP((s)->rdev, d, 24, 16);\ -+} -+ -+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ -+ sizeof(struct squashfs_symlink_inode_header_1));\ -+ SQUASHFS_SWAP((s)->symlink_size, d, 24, 16);\ -+} -+ -+#define SQUASHFS_SWAP_REG_INODE_HEADER_1(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ -+ sizeof(struct squashfs_reg_inode_header_1));\ -+ SQUASHFS_SWAP((s)->mtime, d, 24, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 56, 32);\ -+ SQUASHFS_SWAP((s)->file_size, d, 88, 32);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \ -+ sizeof(struct squashfs_dir_inode_header_1));\ -+ SQUASHFS_SWAP((s)->file_size, d, 24, 19);\ -+ SQUASHFS_SWAP((s)->offset, d, 43, 13);\ -+ SQUASHFS_SWAP((s)->mtime, d, 56, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 88, 24);\ -+} -+ -+#endif -+ -+#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY -+ -+struct squashfs_dir_index_2 { -+ unsigned int index:27; -+ unsigned int start_block:29; -+ unsigned char size; -+ unsigned char name[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_base_inode_header_2 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+} __attribute__ ((packed)); -+ -+struct squashfs_ipc_inode_header_2 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+} __attribute__ ((packed)); -+ -+struct squashfs_dev_inode_header_2 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+ unsigned short rdev; -+} __attribute__ ((packed)); -+ -+struct squashfs_symlink_inode_header_2 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+ unsigned short symlink_size; -+ char symlink[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_reg_inode_header_2 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+ unsigned int mtime; -+ unsigned int start_block; -+ unsigned int fragment; -+ unsigned int offset; -+ unsigned int file_size:32; -+ unsigned short block_list[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_dir_inode_header_2 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+ unsigned int file_size:19; -+ unsigned int offset:13; -+ unsigned int mtime; -+ unsigned int start_block:24; -+} __attribute__ ((packed)); -+ -+struct squashfs_ldir_inode_header_2 { -+ unsigned int inode_type:4; -+ unsigned int mode:12; /* protection */ -+ unsigned int uid:8; /* index into uid table */ -+ unsigned int guid:8; /* index into guid table */ -+ unsigned int file_size:27; -+ unsigned int offset:13; -+ unsigned int mtime; -+ unsigned int start_block:24; -+ unsigned int i_count:16; -+ struct squashfs_dir_index_2 index[0]; -+} __attribute__ ((packed)); -+ -+union squashfs_inode_header_2 { -+ struct squashfs_base_inode_header_2 base; -+ struct squashfs_dev_inode_header_2 dev; -+ struct squashfs_symlink_inode_header_2 symlink; -+ struct squashfs_reg_inode_header_2 reg; -+ struct squashfs_dir_inode_header_2 dir; -+ struct squashfs_ldir_inode_header_2 ldir; -+ struct squashfs_ipc_inode_header_2 ipc; -+}; -+ -+struct squashfs_dir_header_2 { -+ unsigned int count:8; -+ unsigned int start_block:24; -+} __attribute__ ((packed)); -+ -+struct squashfs_dir_entry_2 { -+ unsigned int offset:13; -+ unsigned int type:3; -+ unsigned int size:8; -+ char name[0]; -+} __attribute__ ((packed)); -+ -+struct squashfs_fragment_entry_2 { -+ unsigned int start_block; -+ unsigned int size; -+} __attribute__ ((packed)); -+ -+#define SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\ -+ SQUASHFS_MEMSET(s, d, n);\ -+ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\ -+ SQUASHFS_SWAP((s)->mode, d, 4, 12);\ -+ SQUASHFS_SWAP((s)->uid, d, 16, 8);\ -+ SQUASHFS_SWAP((s)->guid, d, 24, 8);\ -+ -+#define SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, n) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\ -+} -+ -+#define SQUASHFS_SWAP_IPC_INODE_HEADER_2(s, d) \ -+ SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, sizeof(struct squashfs_ipc_inode_header_2)) -+ -+#define SQUASHFS_SWAP_DEV_INODE_HEADER_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ -+ sizeof(struct squashfs_dev_inode_header_2)); \ -+ SQUASHFS_SWAP((s)->rdev, d, 32, 16);\ -+} -+ -+#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ -+ sizeof(struct squashfs_symlink_inode_header_2));\ -+ SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\ -+} -+ -+#define SQUASHFS_SWAP_REG_INODE_HEADER_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ -+ sizeof(struct squashfs_reg_inode_header_2));\ -+ SQUASHFS_SWAP((s)->mtime, d, 32, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 64, 32);\ -+ SQUASHFS_SWAP((s)->fragment, d, 96, 32);\ -+ SQUASHFS_SWAP((s)->offset, d, 128, 32);\ -+ SQUASHFS_SWAP((s)->file_size, d, 160, 32);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_INODE_HEADER_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ -+ sizeof(struct squashfs_dir_inode_header_2));\ -+ SQUASHFS_SWAP((s)->file_size, d, 32, 19);\ -+ SQUASHFS_SWAP((s)->offset, d, 51, 13);\ -+ SQUASHFS_SWAP((s)->mtime, d, 64, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 96, 24);\ -+} -+ -+#define SQUASHFS_SWAP_LDIR_INODE_HEADER_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \ -+ sizeof(struct squashfs_ldir_inode_header_2));\ -+ SQUASHFS_SWAP((s)->file_size, d, 32, 27);\ -+ SQUASHFS_SWAP((s)->offset, d, 59, 13);\ -+ SQUASHFS_SWAP((s)->mtime, d, 72, 32);\ -+ SQUASHFS_SWAP((s)->start_block, d, 104, 24);\ -+ SQUASHFS_SWAP((s)->i_count, d, 128, 16);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_INDEX_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index_2));\ -+ SQUASHFS_SWAP((s)->index, d, 0, 27);\ -+ SQUASHFS_SWAP((s)->start_block, d, 27, 29);\ -+ SQUASHFS_SWAP((s)->size, d, 56, 8);\ -+} -+#define SQUASHFS_SWAP_DIR_HEADER_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header_2));\ -+ SQUASHFS_SWAP((s)->count, d, 0, 8);\ -+ SQUASHFS_SWAP((s)->start_block, d, 8, 24);\ -+} -+ -+#define SQUASHFS_SWAP_DIR_ENTRY_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry_2));\ -+ SQUASHFS_SWAP((s)->offset, d, 0, 13);\ -+ SQUASHFS_SWAP((s)->type, d, 13, 3);\ -+ SQUASHFS_SWAP((s)->size, d, 16, 8);\ -+} -+ -+#define SQUASHFS_SWAP_FRAGMENT_ENTRY_2(s, d) {\ -+ SQUASHFS_SWAP_START\ -+ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry_2));\ -+ SQUASHFS_SWAP((s)->start_block, d, 0, 32);\ -+ SQUASHFS_SWAP((s)->size, d, 32, 32);\ -+} -+ -+#define SQUASHFS_SWAP_FRAGMENT_INDEXES_2(s, d, n) SQUASHFS_SWAP_INTS(s, d, n) -+ -+/* fragment and fragment table defines */ -+#define SQUASHFS_FRAGMENT_BYTES_2(A) (A * sizeof(struct squashfs_fragment_entry_2)) -+ -+#define SQUASHFS_FRAGMENT_INDEX_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) / \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_FRAGMENT_INDEX_OFFSET_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) % \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_FRAGMENT_INDEXES_2(A) ((SQUASHFS_FRAGMENT_BYTES_2(A) + \ -+ SQUASHFS_METADATA_SIZE - 1) / \ -+ SQUASHFS_METADATA_SIZE) -+ -+#define SQUASHFS_FRAGMENT_INDEX_BYTES_2(A) (SQUASHFS_FRAGMENT_INDEXES_2(A) *\ -+ sizeof(int)) -+ -+#endif -+ -+#ifdef __KERNEL__ -+ -+/* -+ * macros used to swap each structure entry, taking into account -+ * bitfields and different bitfield placing conventions on differing -+ * architectures -+ */ -+ -+#include <asm/byteorder.h> -+ -+#ifdef __BIG_ENDIAN -+ /* convert from little endian to big endian */ -+#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \ -+ tbits, b_pos) -+#else -+ /* convert from big endian to little endian */ -+#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \ -+ tbits, 64 - tbits - b_pos) -+#endif -+ -+#define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\ -+ b_pos = pos % 8;\ -+ val = 0;\ -+ s = (unsigned char *)p + (pos / 8);\ -+ d = ((unsigned char *) &val) + 7;\ -+ for(bits = 0; bits < (tbits + b_pos); bits += 8) \ -+ *d-- = *s++;\ -+ value = (val >> (SHIFT))/* & ((1 << tbits) - 1)*/;\ -+} -+ -+#define SQUASHFS_MEMSET(s, d, n) memset(s, 0, n); -+ -+#endif -+#endif -diff -urN linux-2.6.23/include/linux/squashfs_fs_i.h linux-2.6.23.sqlzma-ng/include/linux/squashfs_fs_i.h ---- linux-2.6.23/include/linux/squashfs_fs_i.h 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/include/linux/squashfs_fs_i.h 2007-11-13 18:58:41.000000000 -0500 -@@ -0,0 +1,45 @@ -+#ifndef SQUASHFS_FS_I -+#define SQUASHFS_FS_I -+/* -+ * Squashfs -+ * -+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007 -+ * Phillip Lougher <phillip@lougher.demon.co.uk> -+ * -+ * 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, -+ * or (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -+ * -+ * squashfs_fs_i.h -+ */ -+ -+struct squashfs_inode_info { -+ long long start_block; -+ unsigned int offset; -+ union { -+ struct { -+ long long fragment_start_block; -+ unsigned int fragment_size; -+ unsigned int fragment_offset; -+ long long block_list_start; -+ } s1; -+ struct { -+ long long directory_index_start; -+ unsigned int directory_index_offset; -+ unsigned int directory_index_count; -+ unsigned int parent_inode; -+ } s2; -+ } u; -+ struct inode vfs_inode; -+}; -+#endif -diff -urN linux-2.6.23/include/linux/squashfs_fs_sb.h linux-2.6.23.sqlzma-ng/include/linux/squashfs_fs_sb.h ---- linux-2.6.23/include/linux/squashfs_fs_sb.h 1969-12-31 19:00:00.000000000 -0500 -+++ linux-2.6.23.sqlzma-ng/include/linux/squashfs_fs_sb.h 2007-11-13 19:19:28.000000000 -0500 -@@ -0,0 +1,76 @@ -+#ifndef SQUASHFS_FS_SB -+#define SQUASHFS_FS_SB -+/* -+ * Squashfs -+ * -+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007 -+ * Phillip Lougher <phillip@lougher.demon.co.uk> -+ * -+ * 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, -+ * or (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -+ * -+ * squashfs_fs_sb.h -+ */ -+ -+#include <linux/squashfs_fs.h> -+ -+struct squashfs_cache { -+ long long block; -+ int length; -+ long long next_index; -+ char *data; -+}; -+ -+struct squashfs_fragment_cache { -+ long long block; -+ int length; -+ unsigned int locked; -+ char *data; -+}; -+ -+struct squashfs_sb_info { -+ struct squashfs_super_block sblk; -+ int devblksize; -+ int devblksize_log2; -+ int swap; -+ struct squashfs_cache *block_cache; -+ struct squashfs_fragment_cache *fragment; -+ int next_cache; -+ int next_fragment; -+ int next_meta_index; -+ unsigned int *uid; -+ unsigned int *guid; -+ long long *fragment_index; -+ unsigned int *fragment_index_2; -+ char *read_page; -+ //struct mutex read_data_mutex; -+ struct mutex read_page_mutex; -+ struct mutex block_cache_mutex; -+ struct mutex fragment_mutex; -+ struct mutex meta_index_mutex; -+ wait_queue_head_t waitq; -+ wait_queue_head_t fragment_wait_queue; -+ struct meta_index *meta_index; -+ //z_stream stream; -+ long long *inode_lookup_table; -+ int unused_cache_blks; -+ int unused_frag_blks; -+ int (*read_inode)(struct inode *i, squashfs_inode_t \ -+ inode); -+ long long (*read_blocklist)(struct inode *inode, int \ -+ index, int readahead_blks, char *block_list, \ -+ unsigned short **block_p, unsigned int *bsize); -+ int (*read_fragment_index_table)(struct super_block *s); -+}; -+#endif - |