author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 18 Jan 2010 21:31:10 +0200 | |
changeset 11 | 329ab0095843 |
parent 10 | 36bfc973b146 |
permissions | -rw-r--r-- |
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// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#include <e32std.h> |
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#include <e32std_private.h> |
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#include <f32file.h> |
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#include <d32locd.h> |
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#include <e32cons.h> |
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#include "crashflash.h" |
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#include <partitions.h> |
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#include <ftlcontrolio.h> |
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#ifdef _DEBUG |
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#define TRACE(a) RDebug::Print(a); PrintLine(a) |
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#define TRACE1(a,b) RDebug::Print(a,b); PrintLine(a,b) |
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#define TRACE2(a,b,c) RDebug::Print(a,b,c); PrintLine(a,b,c) |
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#define TRACE5(a,b,c,d,e,f) RDebug::Print(a,b,c,d,e,f); PrintLine(a,b,c,d,e,f) |
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#else |
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#define TRACE(a) |
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#define TRACE1(a,b) |
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#define TRACE2(a,b,c) |
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#define TRACE5(a,b,c,d,e,f) |
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#endif |
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#ifndef _CRASHLOG_COMPR |
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_LIT(KCrashLogFileName, "?:\\crashlog.txt"); |
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#else |
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_LIT(KCrashLogCompFileName, "?:\\crashlog.gz"); |
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_LIT(KCrashLogCompTruncatedFileName, "?:\\crashlog_truncated.gz"); |
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#endif //_CRASHLOG_COMPR |
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_LIT8(KCrashLogSignatureStomp, "\x00\x00\x00\x00"); |
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CConsoleBase* console = 0; |
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RLocalDrive gLd; |
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TLocalDriveCapsV4 gCaps; |
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TPckg<TLocalDriveCapsV4> gCapsBuf(gCaps); |
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#ifdef _DEBUG |
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LOCAL_C void CheckConsoleCreated() |
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{ |
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if(!console) |
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{ |
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TRAPD(r, console = Console::NewL(_L("crashread"), |
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TSize(KConsFullScreen,KConsFullScreen))); |
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__ASSERT_ALWAYS(r == KErrNone, User::Panic(_L("Could not create console"), 1)); |
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} |
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} |
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LOCAL_C void PrintLine(TRefByValue<const TDesC> aFmt,...) |
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{ |
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// Print to a console screen. |
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VA_LIST list; |
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VA_START(list, aFmt); |
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TBuf<0x100> aBuf; |
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aBuf.AppendFormatList(aFmt, list); |
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CheckConsoleCreated(); |
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console->Write(aBuf); |
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console->Write(_L("\n\r")); |
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} |
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#endif |
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/** Read the signature from the flash and verify it is correct. |
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@return ETrue when signature found, EFalse otherwise |
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*/ |
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LOCAL_C TBool SignatureExistsL() |
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{ |
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TBuf8<KCrashLogSignatureBytes> buf(0); |
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User::LeaveIfError(gLd.Read(KCrashLogSizeFieldBytes,KCrashLogSignatureBytes,buf)); |
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if(buf.Compare(KCrashLogSignature) == 0) |
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{ |
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return ETrue; |
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} |
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return EFalse; |
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} |
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LOCAL_C TInt LogSizeL() |
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{ |
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TBuf8<KCrashLogSizeFieldBytes> buf(0); |
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User::LeaveIfError(gLd.Read(0,KCrashLogSizeFieldBytes,buf)); |
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TInt size = *((TUint*)(buf.Ptr())); |
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size -= (KCrashLogHeaderSize); |
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return size; |
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} |
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#ifdef _CRASHLOG_COMPR |
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/** Read the log flags from the flash. Flags located after the log size and uncompressed size |
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@return The log flags byte |
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*/ |
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LOCAL_C TUint32 LogFlagsL() |
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106 |
{ |
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TBuf8<KCrashLogFlagsFieldBytes> buf(0); |
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User::LeaveIfError(gLd.Read(KCrashLogSizeFieldBytes+KCrashLogUncompSizeFieldBytes+KCrashLogSignatureBytes, |
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KCrashLogFlagsFieldBytes,buf)); |
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return *((TUint32*)buf.Ptr()); |
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} |
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#endif //_CRASHLOG_COMPR |
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113 |
|
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LOCAL_C TInt InvalidateSignature() |
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115 |
{ |
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//On Nand we erase the block. |
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if(gCaps.iType == EMediaNANDFlash) |
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118 |
{ |
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return gLd.Format(0,gCaps.iNumBytesMain * gCaps.iNumPagesPerBlock); |
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} |
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//On Nor we just stomp on the first 4 bytes of the signature |
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return gLd.Write(KCrashLogSizeFieldBytes,KCrashLogSignatureStomp); |
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} |
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124 |
|
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/** |
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@return KErrNone if no read errors, otherwise the last read error. |
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@leave if other errors occur. |
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@param aFileName Where the log wll be copied to |
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@param aStartPosition Where to begin reads within the flash section. |
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@param aLogSize The total amount to read. |
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*/ |
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TInt CopyToFileL(const TDesC& aFileName, const TInt aStartPosition, const TInt aLogSize) |
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133 |
{ |
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// Connect to f32 and write out the file |
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RFs fs; |
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RFile file; |
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User::LeaveIfError(fs.Connect()); |
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CleanupClosePushL(fs); |
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User::LeaveIfError(file.Replace(fs, aFileName, EFileWrite)); |
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CleanupClosePushL(file); |
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141 |
|
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//create buffer |
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const TInt KBufferSize=32*1024; |
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HBufC8* buf = HBufC8::NewLC(KBufferSize); |
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TPtr8 ptr = buf->Des(); |
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146 |
|
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TInt readError = KErrNone; |
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for(TInt offset=0; offset<aLogSize; offset+=KBufferSize) |
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149 |
{ |
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//don't read beyond end on final iteration. |
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const TInt readLength = Min(KBufferSize, aLogSize-offset); |
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152 |
|
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ptr.SetLength(0); |
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TInt r = gLd.Read(aStartPosition+offset,readLength,ptr); |
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155 |
|
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// in case of error store it, but attempt to continue. |
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if (r!=KErrNone) |
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158 |
{ |
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readError=r; |
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160 |
} |
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161 |
|
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User::LeaveIfError(file.Write(offset, ptr)); |
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} |
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164 |
|
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User::LeaveIfError(file.Flush()); |
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CleanupStack::PopAndDestroy(buf); |
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CleanupStack::PopAndDestroy(&file); |
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CleanupStack::PopAndDestroy(&fs); |
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return readError; |
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} |
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171 |
|
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172 |
|
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LOCAL_C TInt MainL() |
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174 |
{ |
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// check if command line argument is 'reset' |
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RBuf cl; |
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cl.CreateL(User::CommandLineLength()); |
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cl.CleanupClosePushL(); |
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User::CommandLine(cl); |
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TBool reset = (cl==_L("reset")); |
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CleanupStack::PopAndDestroy(); |
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182 |
|
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TBool changed; |
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TInt r = 0; |
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TInt i=0; |
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// 1) Find a crash log partition. |
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for(; i<KMaxLocalDrives; i++) |
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188 |
{ |
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r = gLd.Connect(i,changed); |
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if(r == KErrNone) |
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191 |
{ |
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r = gLd.Caps(gCapsBuf); |
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if(r != KErrNone) |
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194 |
{ |
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//TRACE1(_L("Could not retrieve gCaps for drive: %d. Skipping to next..."),i); |
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continue; |
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197 |
} |
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if(gCaps.iPartitionType == (TUint16)KPartitionTypeSymbianCrashLog) |
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199 |
{ |
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200 |
TRACE1(_L("Found Symbian crash log partition on drive: %d"),i); |
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201 |
CleanupClosePushL(gLd); |
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// 1) See if there is an existing crash log |
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203 |
TBool exists = SignatureExistsL(); |
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if(!exists) |
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205 |
{ |
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TRACE(_L("Did not find an existing crash log signature on this crash log partition...")); |
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//There may be a second crash log partition. (nor or nand |
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//depending on ordering in variantmediadef.h). So we continue searching |
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CleanupStack::PopAndDestroy(&gLd); |
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continue; |
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} |
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TRACE1(_L("Found a crash log signature on drive: %d."),i); |
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//We've found a crash log partition with a signature on it. |
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break; |
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} |
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else |
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|
217 |
{ |
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//TRACE2(_L("Partition type on drive: %d is %d"),i,gCaps.iPartitionType); |
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} |
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} |
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221 |
} |
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if(i == KMaxLocalDrives) |
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223 |
{ |
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TRACE(_L("No crash log partition found with valid crash log signature found. Exiting...")); |
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User::Leave(KErrNotFound); |
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} |
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|
227 |
|
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// If we're doing a reset, don't try to read the crash log, just skip to stomping the signature |
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if(!reset) |
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{ |
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TUint8 systemDriveChar = (TUint8) RFs::GetSystemDriveChar(); |
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#ifndef _CRASHLOG_COMPR |
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// Determine size of crash log and copy to file. |
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TInt logSize = LogSizeL(); |
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TRACE1(_L("Reading crash log of %d bytes..."), logSize); |
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TBuf<sizeof(KCrashLogFileName)> crashLogFileName(KCrashLogFileName); |
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crashLogFileName[0] = systemDriveChar; |
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r = CopyToFileL(crashLogFileName, KCrashLogSizeFieldBytes+KCrashLogSignatureBytes, logSize); |
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|
239 |
|
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if (r==KErrNone) |
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|
241 |
{ |
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TRACE1(_L("Crash log successfully written to: %S."), &crashLogFileName); |
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243 |
} |
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244 |
else |
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245 |
{ |
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TRACE1(_L("Crash log written to %S but errors were encountered when reading, it may be incomplete or corrupt."), &crashLogFileName); |
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|
247 |
} |
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|
248 |
|
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249 |
#else |
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250 |
// 2) Read crash log header to get the compressed and uncompressed size of the log |
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251 |
// also need to read the flags to determine if the log had to be truncated and |
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// if the expected log format is found |
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const TUint32 logFlags = LogFlagsL(); |
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|
254 |
|
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// Extract byte offset from the end of the header to the start of the log data |
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const TInt logOff = logFlags>>KCrashLogFlagOffShift; |
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|
257 |
|
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// Work out if the log had to be truncated |
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const TInt truncated = logFlags&KCrashLogFlagTruncated; |
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|
260 |
|
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|
261 |
// Check the crashlog type flag is that expected - here we can only cope with GZIP compatible logs |
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|
262 |
if ((logFlags & (0xffffffff>>(32-KCrashLogFlagTypeBits))) != KCrashLogFlagGzip) |
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|
263 |
{// wrong log type so can't extract it |
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|
264 |
TRACE(_L("Crash Log data is stored in an incompatible data format so can't be read")); |
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|
265 |
} |
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|
266 |
else |
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|
267 |
{ |
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Revision: 200951
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|
268 |
// 2) Read the log data |
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|
269 |
const TInt logSize = LogSizeL()-logOff; // don't include any offset bytes |
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|
270 |
TRACE1(_L("Reading compressed crash log of %d bytes..."), logSize); |
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|
271 |
|
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|
272 |
|
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|
273 |
TRACE1(_L("Writing compressed crash log to file..."), logSize); |
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|
274 |
RBuf crashLogCompFileName; |
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|
275 |
if (!truncated) |
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|
276 |
{ |
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|
277 |
crashLogCompFileName.CreateL(KCrashLogCompFileName); |
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|
278 |
} |
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|
279 |
else |
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|
280 |
{ |
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|
281 |
crashLogCompFileName.CreateL(KCrashLogCompTruncatedFileName); |
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|
282 |
} |
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|
283 |
crashLogCompFileName.CleanupClosePushL(); |
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|
284 |
|
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|
285 |
crashLogCompFileName[0] = systemDriveChar; |
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Revision: 200951
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|
286 |
r = CopyToFileL(crashLogCompFileName, KCrashLogHeaderSize+logOff, logSize); |
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|
287 |
|
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|
288 |
if (r==KErrNone) |
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diff
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|
289 |
{ |
96e5fb8b040d
Revision: 200951
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|
290 |
if (!truncated) |
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Revision: 200951
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|
291 |
{ |
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Revision: 200951
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|
292 |
TRACE1(_L("Crash log successfully written to: %S."), &crashLogCompFileName); |
96e5fb8b040d
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|
293 |
} |
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|
294 |
else |
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|
295 |
{ |
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Revision: 200951
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parents:
diff
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|
296 |
TRACE(_L("Crash log was truncated, some log data has been lost")); |
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|
297 |
TRACE1(_L("Crash log successfully written to: %S."), &crashLogCompFileName); |
96e5fb8b040d
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|
298 |
} |
96e5fb8b040d
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diff
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|
299 |
} |
96e5fb8b040d
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diff
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|
300 |
else |
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Revision: 200951
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parents:
diff
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|
301 |
{ |
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
302 |
if(!truncated) |
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
303 |
{ |
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
304 |
TRACE1(_L("Crash log written to %S but errors were encountered when reading, it may be incomplete or corrupt."), &crashLogCompFileName); |
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
305 |
} |
96e5fb8b040d
Revision: 200951
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parents:
diff
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|
306 |
else |
96e5fb8b040d
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{ |
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TRACE1(_L("Crash log written to %S but errors were encountered when reading, it may be incomplete or corrupt."), &crashLogCompFileName); |
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} |
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} |
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CleanupStack::PopAndDestroy(&crashLogCompFileName); |
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} |
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#endif //_CRASHLOG_COMPR |
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} |
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|
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// 5) Stomp on the signature to mark it eligible to be overwritten |
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TRACE(_L("Overwriting existing signature to indicate crash log has been read...")); |
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User::LeaveIfError(InvalidateSignature()); |
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|
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CleanupStack::PopAndDestroy(&gLd); |
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|
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if (r==KErrNone) |
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{ |
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TRACE(_L("Crash reader finished successfully.")); |
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} |
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else |
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{ |
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TRACE(_L("Crash reader finished but with errors.")); |
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} |
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return KErrNone; |
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} |
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|
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GLDEF_C TInt E32Main() |
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{ |
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__UHEAP_MARK; |
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CTrapCleanup* cleanup=CTrapCleanup::New(); |
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TRAPD(ret, MainL()); |
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if(console) |
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{ |
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console->Getch(); |
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delete console; |
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} |
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if (ret){} // stops compile warning |
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delete cleanup; |
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__UHEAP_MARKEND; |
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return KErrNone; |
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} |