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Windows-Server-2003/termsrv/drivers/termdd/trace.c

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2024-08-04 01:28:15 +02:00
/*******************************************************************************
*
* TRACE.C
* This module implements the trace functions
*
* Copyright 1998, Microsoft.
*
*
******************************************************************************/
/*
* Includes
*/
#include <precomp.h>
#pragma hdrstop
#include <ctxdd.h>
/*=============================================================================
== External Functions Defined
=============================================================================*/
NTSTATUS IcaStartStopTrace( PICA_TRACE_INFO, PICA_TRACE );
VOID _cdecl IcaSystemTrace( ULONG, ULONG, CHAR *, ... );
VOID IcaSystemTraceBuffer( ULONG, ULONG, PVOID, ULONG );
VOID _cdecl IcaStackTrace( PSDCONTEXT, ULONG, ULONG, CHAR *, ... );
VOID IcaStackTraceBuffer( PSDCONTEXT, ULONG, ULONG, PVOID, ULONG );
VOID IcaTraceFormat( PICA_TRACE_INFO, ULONG, ULONG, CHAR * );
VOID _cdecl _IcaTrace( PICA_CONNECTION, ULONG, ULONG, CHAR *, ... );
VOID _cdecl _IcaStackTrace( PICA_STACK, ULONG, ULONG, CHAR *, ... );
VOID _IcaStackTraceBuffer( PICA_STACK, ULONG, ULONG, PVOID, ULONG );
VOID _cdecl _IcaChannelTrace( PICA_CHANNEL, ULONG, ULONG, CHAR *, ... );
/*=============================================================================
== Internal functions
=============================================================================*/
NTSTATUS _IcaOpenTraceFile( PICA_TRACE_INFO, PWCHAR );
VOID _IcaCloseTraceFile( PICA_TRACE_INFO );
VOID _IcaTraceWrite( PICA_TRACE_INFO, PVOID );
VOID _IcaFlushDeferredTrace( PICA_TRACE_INFO );
int _FormatTime( CHAR *, ULONG );
int _FormatThreadId( CHAR *, ULONG );
VOID _WriteHexData( PICA_TRACE_INFO, PVOID, ULONG );
/*=============================================================================
== Global variables
=============================================================================*/
/*
* Trace info
*/
ICA_TRACE_INFO G_TraceInfo = { 0, 0, FALSE, FALSE, NULL, NULL, NULL };
/*******************************************************************************
*
* IcaStartStopTrace
*
* Start/stop tracing
*
* ENTRY:
* pTraceInfo (input)
* pointer to ICA_TRACE_INFO struct
* pTrace (input)
* pointer to ICA_TRACE (IOCTL) trace settings
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
NTSTATUS
IcaStartStopTrace(
IN PICA_TRACE_INFO pTraceInfo,
IN PICA_TRACE pTrace
)
{
NTSTATUS Status;
/*
* If a trace file was specified,
* then open it and save a pointer to the file object.
*/
if ( pTrace->TraceFile[0] ) {
/*
* Force a null termination for file name.
*/
pTrace->TraceFile[255] = (WCHAR)0;
Status = _IcaOpenTraceFile( pTraceInfo, pTrace->TraceFile );
if ( !NT_SUCCESS( Status ) )
return( Status );
/*
* If no trace file specified, then close any existing trace file
*/
} else if ( pTraceInfo->pTraceFileName ) {
_IcaCloseTraceFile( pTraceInfo );
}
/*
* Set trace flags
*/
pTraceInfo->fTraceDebugger = pTrace->fDebugger;
pTraceInfo->fTraceTimestamp = pTrace->fTimestamp;
pTraceInfo->TraceClass = pTrace->TraceClass;
pTraceInfo->TraceEnable = pTrace->TraceEnable;
return( STATUS_SUCCESS );
}
/*******************************************************************************
*
* IcaSystemTrace
*
* This routine conditional writes a trace record to the system trace file
*
* ENTRY:
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* Format (input)
* format string
* ... (input)
* enough arguments to satisfy format string
*
* EXIT:
* nothing
*
******************************************************************************/
VOID _cdecl
IcaSystemTrace( IN ULONG TraceClass,
IN ULONG TraceEnable,
IN CHAR * Format,
IN ... )
{
va_list arg_marker;
char Buffer[256];
va_start( arg_marker, Format );
/*
* Check if this trace record should be output
*/
if ( !(TraceClass & G_TraceInfo.TraceClass) || !(TraceEnable & G_TraceInfo.TraceEnable) )
return;
/*
* Format trace data
*/
_vsnprintf( Buffer, sizeof(Buffer), Format, arg_marker );
Buffer[sizeof(Buffer) -1] = '\0';
/*
* Write trace data
*/
IcaTraceFormat( &G_TraceInfo, TraceClass, TraceEnable, Buffer );
}
/*******************************************************************************
*
* IcaSystemTraceBuffer
*
* This routine conditional writes a data buffer to the system trace file
*
* ENTRY:
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* pBuffer (input)
* pointer to data buffer
* ByteCount (input)
* length of buffer
*
* EXIT:
* nothing
*
******************************************************************************/
VOID
IcaSystemTraceBuffer( IN ULONG TraceClass,
IN ULONG TraceEnable,
IN PVOID pBuffer,
IN ULONG ByteCount )
{
/*
* Check if this trace record should be output
*/
if ( !(TraceClass & G_TraceInfo.TraceClass) ||
!(TraceEnable & G_TraceInfo.TraceEnable) )
return;
/*
* Write trace data
*/
_WriteHexData( &G_TraceInfo, pBuffer, ByteCount );
}
/*******************************************************************************
*
* IcaStackTrace
*
* This routine conditional writes a trace record depending on the trace mask
*
* ENTRY:
* pContext (input)
* pointer to stack driver context
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* Format (input)
* format string
* ... (input)
* enough arguments to satisfy format string
*
* EXIT:
* nothing
*
******************************************************************************/
VOID _cdecl
IcaStackTrace( IN PSDCONTEXT pContext,
IN ULONG TraceClass,
IN ULONG TraceEnable,
IN CHAR * Format,
IN ... )
{
va_list arg_marker;
char Buffer[256];
PICA_STACK pStack;
PICA_CONNECTION pConnect;
PICA_TRACE_INFO pTraceInfo;
va_start( arg_marker, Format );
/*
* Use SD passed context to get the STACK object pointer.
*/
pStack = (CONTAINING_RECORD( pContext, SDLINK, SdContext ))->pStack;
pConnect = IcaGetConnectionForStack( pStack );
/*
* Check if this trace record should be output
*/
pTraceInfo = &pConnect->TraceInfo;
if ( !(TraceClass & pTraceInfo->TraceClass) ||
!(TraceEnable & pTraceInfo->TraceEnable) )
return;
/*
* Format trace data
*/
_vsnprintf( Buffer, sizeof(Buffer), Format, arg_marker );
Buffer[sizeof(Buffer) -1] = '\0';
/*
* Write trace data
*/
IcaTraceFormat( pTraceInfo, TraceClass, TraceEnable, Buffer );
}
/*******************************************************************************
*
* IcaStackTraceBuffer
*
* This routine conditional writes a data buffer to the trace file
*
* ENTRY:
* pContext (input)
* pointer to stack driver context
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* pBuffer (input)
* pointer to data buffer
* ByteCount (input)
* length of buffer
*
* EXIT:
* nothing
*
******************************************************************************/
VOID
IcaStackTraceBuffer( IN PSDCONTEXT pContext,
IN ULONG TraceClass,
IN ULONG TraceEnable,
IN PVOID pBuffer,
IN ULONG ByteCount )
{
PICA_TRACE_INFO pTraceInfo;
PICA_STACK pStack;
PICA_CONNECTION pConnect;
/*
* Use SD passed context to get the STACK object pointer.
*/
pStack = (CONTAINING_RECORD( pContext, SDLINK, SdContext ))->pStack;
pConnect = IcaGetConnectionForStack( pStack );
/*
* Check if this trace record should be output
*/
pTraceInfo = &pConnect->TraceInfo;
if ( !(TraceClass & pTraceInfo->TraceClass) ||
!(TraceEnable & pTraceInfo->TraceEnable) )
return;
/*
* Write trace data
*/
_WriteHexData( pTraceInfo, pBuffer, ByteCount );
}
/*******************************************************************************
*
* IcaTraceFormat
*
* This routine conditional writes trace data depending on the trace mask
*
* ENTRY:
* pTraceInfo (input)
* pointer to ICA_TRACE_INFO struct
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* pData (input)
* pointer to null terminated trace data
*
* EXIT:
* nothing
*
******************************************************************************/
VOID
IcaTraceFormat( IN PICA_TRACE_INFO pTraceInfo,
IN ULONG TraceClass,
IN ULONG TraceEnable,
IN CHAR * pData )
{
char Buffer[256];
char * pBuf;
int len = 0;
int i;
/*
* Check if this trace record should be output
*/
if ( !(TraceClass & pTraceInfo->TraceClass) || !(TraceEnable & pTraceInfo->TraceEnable) )
return;
pBuf = Buffer;
/*
* Append time stamp
*/
if ( pTraceInfo->fTraceTimestamp ) {
len = _FormatTime( pBuf, sizeof(Buffer) );
pBuf += len;
}
/*
* Append thread id
*/
i = _FormatThreadId( pBuf, sizeof(Buffer) - len );
len += i;
pBuf += i;
/*
* Append trace data
*/
_snprintf( pBuf, sizeof(Buffer) - len, pData );
/*
* Write trace data
*/
_IcaTraceWrite( pTraceInfo, Buffer );
}
/*******************************************************************************
*
* _IcaTrace
*
* Write a trace record to the winstation trace file
*
* ENTRY:
* pConnect (input)
* pointer to connection structure
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* Format (input)
* format string
* ... (input)
* enough arguments to satisfy format string
*
* EXIT:
* nothing
*
******************************************************************************/
VOID _cdecl
_IcaTrace( IN PICA_CONNECTION pConnect,
IN ULONG TraceClass,
IN ULONG TraceEnable,
IN CHAR * Format,
IN ... )
{
va_list arg_marker;
char Buffer[256];
PICA_TRACE_INFO pTraceInfo;
ASSERT( pConnect->Header.Type == IcaType_Connection );
va_start( arg_marker, Format );
pTraceInfo = &pConnect->TraceInfo;
/*
* Check if this trace record should be output
*/
if ( !(TraceClass & pTraceInfo->TraceClass) || !(TraceEnable & pTraceInfo->TraceEnable) )
return;
/*
* Format trace data
*/
_vsnprintf( Buffer, sizeof(Buffer), Format, arg_marker );
Buffer[sizeof(Buffer) -1] = '\0';
/*
* Write trace data
*/
IcaTraceFormat( pTraceInfo, TraceClass, TraceEnable, Buffer );
}
/*******************************************************************************
*
* _IcaStackTrace
*
* Write a trace record to the winstation trace file
*
* ENTRY:
* pStack (input)
* pointer to stack structure
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* Format (input)
* format string
* ... (input)
* enough arguments to satisfy format string
*
* EXIT:
* nothing
*
******************************************************************************/
VOID _cdecl
_IcaStackTrace( IN PICA_STACK pStack,
IN ULONG TraceClass,
IN ULONG TraceEnable,
IN CHAR * Format,
IN ... )
{
va_list arg_marker;
char Buffer[256];
PICA_CONNECTION pConnect;
PICA_TRACE_INFO pTraceInfo;
ASSERT( pStack->Header.Type == IcaType_Stack );
va_start( arg_marker, Format );
pConnect = IcaGetConnectionForStack( pStack );
/*
* Check if this trace record should be output
*/
pTraceInfo = &pConnect->TraceInfo;
if ( !(TraceClass & pTraceInfo->TraceClass) ||
!(TraceEnable & pTraceInfo->TraceEnable) )
return;
/*
* Format trace data
*/
_vsnprintf( Buffer, sizeof(Buffer), Format, arg_marker );
Buffer[sizeof(Buffer) -1] = '\0';
/*
* Write trace data
*/
IcaTraceFormat( pTraceInfo, TraceClass, TraceEnable, Buffer );
}
/*******************************************************************************
*
* _IcaStackTraceBuffer
*
* This routine conditional writes a data buffer to the trace file
*
* ENTRY:
* pStack (input)
* pointer to stack structure
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* pBuffer (input)
* pointer to data buffer
* ByteCount (input)
* length of buffer
*
* EXIT:
* nothing
*
******************************************************************************/
VOID
_IcaStackTraceBuffer( IN PICA_STACK pStack,
IN ULONG TraceClass,
IN ULONG TraceEnable,
IN PVOID pBuffer,
IN ULONG ByteCount )
{
PICA_CONNECTION pConnect;
PICA_TRACE_INFO pTraceInfo;
ASSERT( pStack->Header.Type == IcaType_Stack );
pConnect = IcaGetConnectionForStack( pStack );
/*
* Check if this trace record should be output
*/
pTraceInfo = &pConnect->TraceInfo;
if ( !(TraceClass & pTraceInfo->TraceClass) ||
!(TraceEnable & pTraceInfo->TraceEnable) )
return;
/*
* Write trace data
*/
_WriteHexData( pTraceInfo, pBuffer, ByteCount );
}
/*******************************************************************************
*
* _IcaChannelTrace
*
* Write a trace record to the winstation trace file
*
* ENTRY:
* pChannel (input)
* pointer to Channel structure
* TraceClass (input)
* trace class bit mask
* TraceEnable (input)
* trace type bit mask
* Format (input)
* format string
* ... (input)
* enough arguments to satisfy format string
*
* EXIT:
* nothing
*
******************************************************************************/
VOID _cdecl
_IcaChannelTrace( IN PICA_CHANNEL pChannel,
IN ULONG TraceClass,
IN ULONG TraceEnable,
IN CHAR * Format,
IN ... )
{
va_list arg_marker;
char Buffer[256];
PICA_TRACE_INFO pTraceInfo;
ASSERT( pChannel->Header.Type == IcaType_Channel );
va_start( arg_marker, Format );
pTraceInfo = &pChannel->pConnect->TraceInfo;
/*
* Check if this trace record should be output
*/
if ( !(TraceClass & pTraceInfo->TraceClass) || !(TraceEnable & pTraceInfo->TraceEnable) )
return;
/*
* Format trace data
*/
_vsnprintf( Buffer, sizeof(Buffer), Format, arg_marker );
Buffer[sizeof(Buffer) -1] = '\0';
/*
* Write trace data
*/
IcaTraceFormat( pTraceInfo, TraceClass, TraceEnable, Buffer );
}
/*******************************************************************************
*
* _IcaOpenTraceFile
*
* Open a trace file
*
* ENTRY:
* pTraceInfo (input)
* pointer to ICA_TRACE_INFO struct
* pTraceFile (input)
* pointer to trace file name
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
#define NAMEPREFIX L"\\DosDevices\\"
NTSTATUS
_IcaOpenTraceFile(
IN PICA_TRACE_INFO pTraceInfo,
IN PWCHAR pTraceFile
)
{
UNICODE_STRING TraceString;
OBJECT_ATTRIBUTES ObjectAttributes;
IO_STATUS_BLOCK iosb;
HANDLE TraceFileHandle;
PFILE_OBJECT pTraceFileObject;
ULONG PrefixLength;
ULONG TraceFileLength;
NTSTATUS Status;
PrefixLength = wcslen( NAMEPREFIX ) * sizeof(WCHAR);
TraceFileLength = wcslen( pTraceFile ) * sizeof(WCHAR);
TraceString.Length = (USHORT) (PrefixLength + TraceFileLength);
TraceString.MaximumLength = TraceString.Length + sizeof(UNICODE_NULL);
TraceString.Buffer = ICA_ALLOCATE_POOL( NonPagedPool, TraceString.MaximumLength );
if (TraceString.Buffer != NULL) {
RtlCopyMemory( TraceString.Buffer, NAMEPREFIX, PrefixLength );
RtlCopyMemory( (char *)TraceString.Buffer + PrefixLength, pTraceFile, TraceFileLength );
TraceString.Buffer[(PrefixLength + TraceFileLength) / sizeof(WCHAR)] = UNICODE_NULL;
}
else {
return STATUS_NO_MEMORY;
}
/*
* If we already have a trace file and the name is the same
* as a previous call, then there's nothing to be done.
*/
if ( pTraceInfo->pTraceFileName != NULL &&
!_wcsicmp( TraceString.Buffer, pTraceInfo->pTraceFileName ) ) {
ICA_FREE_POOL( TraceString.Buffer );
return( STATUS_SUCCESS );
}
/*
* Close the existing trace file if there is one
*/
if ( pTraceInfo->pTraceFileName ) {
_IcaCloseTraceFile( pTraceInfo );
}
InitializeObjectAttributes( &ObjectAttributes, &TraceString,
OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL );
Status = ZwCreateFile(
&TraceFileHandle,
GENERIC_READ | GENERIC_WRITE | SYNCHRONIZE,
&ObjectAttributes,
&iosb, // returned status information.
0, // block size (unused).
0, // file attributes.
FILE_SHARE_READ | FILE_SHARE_WRITE,
FILE_OVERWRITE_IF, // create disposition.
0, // create options.
NULL,
0
);
if ( !NT_SUCCESS( Status ) ) {
ICA_FREE_POOL( TraceString.Buffer );
return( Status );
}
/*
* Use the trace file handle to get a pointer to the file object.
*/
Status = ObReferenceObjectByHandle(
TraceFileHandle,
0L, // DesiredAccess
*IoFileObjectType,
KernelMode,
(PVOID *)&pTraceFileObject,
NULL
);
ZwClose( TraceFileHandle );
if ( !NT_SUCCESS( Status ) ) {
ICA_FREE_POOL( TraceString.Buffer );
return( Status );
}
/*
* Save Trace file name and file object pointer
*/
pTraceInfo->pTraceFileName = TraceString.Buffer;
pTraceInfo->pTraceFileObject = pTraceFileObject;
return( STATUS_SUCCESS );
}
/*******************************************************************************
*
* _IcaCloseTraceFile
*
* Close a trace file
*
* ENTRY:
* pTraceInfo (input)
* pointer to ICA_TRACE_INFO struct
*
* EXIT:
* STATUS_SUCCESS - no error
*
******************************************************************************/
VOID
_IcaCloseTraceFile(
IN PICA_TRACE_INFO pTraceInfo
)
{
PWCHAR pTraceFileName;
PFILE_OBJECT pTraceFileObject;
/*
* First write out any deferred trace records that exist
*/
_IcaFlushDeferredTrace( pTraceInfo );
/*
* Get/reset trace info fields
*/
pTraceFileName = pTraceInfo->pTraceFileName;
pTraceFileObject = pTraceInfo->pTraceFileObject;
pTraceInfo->pTraceFileName = NULL;
pTraceInfo->pTraceFileObject = NULL;
/*
* Close trace file and free resources
*/
ICA_FREE_POOL( pTraceFileName );
ObDereferenceObject( pTraceFileObject );
}
/*******************************************************************************
*
* _IcaTraceWrite
*
* Write a trace file entry
*
* ENTRY:
* pTraceInfo (input)
* pointer to ICA_TRACE_INFO struct
* Buffer (input)
* pointer to trace buffer to write
*
* EXIT:
* nothing
*
******************************************************************************/
VOID
_IcaTraceWrite(
IN PICA_TRACE_INFO pTraceInfo,
IN PVOID Buffer
)
{
KIRQL irql;
ULONG Length;
PDEFERRED_TRACE pDeferred;
PDEFERRED_TRACE *ppDeferredTrace;
NTSTATUS Status;
/*
* Write to kernel debugger if necessary
*/
if ( pTraceInfo->fTraceDebugger )
DbgPrint( "%s", Buffer );
/*
* If no file object pointer, then we're done
*/
if ( pTraceInfo->pTraceFileObject == NULL )
return;
Length = strlen(Buffer);
/*
* If current Irql is DISPATCH_LEVEL or higher, then we can't
* write the data now, so queue it for later writing.
*/
irql = KeGetCurrentIrql();
if ( irql >= DISPATCH_LEVEL ) {
KIRQL oldIrql;
/*
* Allocate and initialize a deferred trace entry
*/
pDeferred = ICA_ALLOCATE_POOL( NonPagedPool, sizeof(*pDeferred) + Length );
if ( pDeferred == NULL )
return;
pDeferred->Next = NULL;
pDeferred->Length = Length;
RtlCopyMemory( pDeferred->Buffer, Buffer, Length );
/*
* Since the deferred list may be manipulated in
* _IcaFlushDeferredTrace on behalf of an IOCTL_SYSTEM_TRACE
* which does not hold any locks, IcaSpinLock is used to
* ensure the list's integrity.
*/
IcaAcquireSpinLock( &IcaTraceSpinLock, &oldIrql );
/*
* Add it to the end of the list
*/
ppDeferredTrace = &pTraceInfo->pDeferredTrace;
while ( *ppDeferredTrace )
ppDeferredTrace = &(*ppDeferredTrace)->Next;
*ppDeferredTrace = pDeferred;
IcaReleaseSpinLock( &IcaTraceSpinLock, oldIrql );
return;
}
/*
* Write out any deferred trace records that exist
*/
_IcaFlushDeferredTrace( pTraceInfo );
/*
* Now write the current trace buffer
*/
CtxWriteFile( pTraceInfo->pTraceFileObject, Buffer, Length, NULL, NULL, NULL );
}
/*******************************************************************************
*
* _IcaFlushDeferredTrace
*
* Write any deferred trace file entries
*
* ENTRY:
* pTraceInfo (input)
* pointer to ICA_TRACE_INFO struct
*
* EXIT:
* nothing
*
******************************************************************************/
VOID
_IcaFlushDeferredTrace( PICA_TRACE_INFO pTraceInfo )
{
KIRQL oldIrql;
PDEFERRED_TRACE pDeferred;
IcaAcquireSpinLock( &IcaTraceSpinLock, &oldIrql );
while ( (pDeferred = pTraceInfo->pDeferredTrace) ) {
pTraceInfo->pDeferredTrace = pDeferred->Next;
IcaReleaseSpinLock( &IcaTraceSpinLock, oldIrql );
CtxWriteFile( pTraceInfo->pTraceFileObject, pDeferred->Buffer,
pDeferred->Length, NULL, NULL, NULL );
ICA_FREE_POOL( pDeferred );
IcaAcquireSpinLock( &IcaTraceSpinLock, &oldIrql );
}
IcaReleaseSpinLock( &IcaTraceSpinLock, oldIrql );
}
/*******************************************************************************
*
* _FormatTime
*
* format current time into buffer
*
* ENTRY:
* pBuffer (output)
* pointer to buffer
* Length (input)
* length of buffer
*
* EXIT:
* length of formated time
*
******************************************************************************/
int
_FormatTime( CHAR * pBuffer, ULONG Length )
{
LARGE_INTEGER SystemTime;
LARGE_INTEGER LocalTime;
TIME_FIELDS TimeFields;
int len;
/*
* Get local time
*/
KeQuerySystemTime( &SystemTime );
ExSystemTimeToLocalTime( &SystemTime, &LocalTime );
RtlTimeToTimeFields( &LocalTime, &TimeFields );
/*
* Format buffer
*/
len = _snprintf( pBuffer,
Length,
"%02d:%02d:%02d.%03d ",
TimeFields.Hour,
TimeFields.Minute,
TimeFields.Second,
TimeFields.Milliseconds );
return( len );
}
/*******************************************************************************
*
* _FormatThreadId
*
* format thread id into buffer
*
* ENTRY:
* pBuffer (output)
* pointer to buffer
* Length (input)
* length of buffer
*
* EXIT:
* length of formated time
*
******************************************************************************/
#define TEB_CLIENTID_OFFSET 0x1e0
int
_FormatThreadId( CHAR * pBuffer, ULONG Length )
{
PCLIENT_ID pClientId;
char Number[40]; //on WIN64, %p is 16 chars, we need two of these. So 32 + 2 bytes for "." and "\0". Use 40 just in case
int len;
/*
* Get pointer to clientid structure in teb
* - use hardcoded teb offset
*/
pClientId = (PCLIENT_ID) ((char*)PsGetCurrentThread() + TEB_CLIENTID_OFFSET);
/*
* Format buffer
*/
_snprintf( Number, sizeof(Number), "%p.%p",
pClientId->UniqueProcess, pClientId->UniqueThread );
Number[39] = '\0';
len = _snprintf( pBuffer, Length, "%-7s ", Number );
return( len );
}
/*******************************************************************************
*
* _WriteHexData
*
* format and write hex data
*
* ENTRY:
* pTraceInfo (input)
* pointer to ICA_TRACE_INFO struct
* pBuffer (output)
* pointer to buffer
* Length (input)
* length of buffer
*
* EXIT:
* length of formated time
*
******************************************************************************/
VOID
_WriteHexData(
IN PICA_TRACE_INFO pTraceInfo,
IN PVOID pBuffer,
IN ULONG ByteCount
)
{
PUCHAR pData;
ULONG i;
ULONG j;
char Buffer[256];
/*
* Output data
*/
pData = (PUCHAR) pBuffer;
for ( i=0; i < ByteCount; i += 16 ) {
ULONG c = 0;
for ( j=0; j < 16 && (i+j) < ByteCount; j++ )
c += _snprintf( &Buffer[c], sizeof(Buffer)-c, "%02X ", pData[j] );
for ( ; j < 16; j++ ) {
Buffer[c++] = ' ';
Buffer[c++] = ' ';
Buffer[c++] = ' ';
}
Buffer[c++] = ' ';
Buffer[c++] = ' ';
for ( j=0; j < 16 && (i+j) < ByteCount; j++, pData++ ) {
if ( *pData < 0x20 || *pData > 0x7f )
Buffer[c++] = '.';
else
Buffer[c++] = *pData;
}
Buffer[c++] = '\n';
Buffer[c++] = '\0';
_IcaTraceWrite( pTraceInfo, Buffer );
}
}
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