202 lines
5 KiB
C
202 lines
5 KiB
C
/*++
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Copyright (c) 1992 Microsoft Corporation
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Module Name:
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errorlog.c
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Abstract:
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This module implements the error logging in the server.
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!!! This module must be nonpageable.
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Author:
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Manny Weiser (mannyw) 11-Feb-92
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#include <windef.h>
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#include <align.h>
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, CnWriteErrorLogEntry)
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#endif
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ULONG CnSequenceNumber = 0;
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//#pragma optimize("",off)
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VOID
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_cdecl
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CnWriteErrorLogEntry(
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IN ULONG UniqueErrorCode,
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IN NTSTATUS NtStatusCode,
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IN PVOID ExtraInformationBuffer,
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IN USHORT ExtraInformationLength,
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IN USHORT NumberOfInsertionStrings,
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...
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)
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#define LAST_NAMED_ARGUMENT NumberOfInsertionStrings
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/*++
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Routine Description:
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This function allocates an I/O error log record, fills it in and writes it
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to the I/O error log.
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Arguments:
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Return Value:
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None.
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--*/
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{
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PIO_ERROR_LOG_PACKET ErrorLogEntry;
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int TotalErrorLogEntryLength;
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ULONG SizeOfStringData = 0;
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va_list ParmPtr; // Pointer to stack parms.
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ULONG Length;
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PAGED_CODE();
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if (NumberOfInsertionStrings != 0) {
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ULONG i;
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va_start(ParmPtr, LAST_NAMED_ARGUMENT);
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for (i = 0; i < NumberOfInsertionStrings; i += 1) {
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PWSTR String = va_arg(ParmPtr, PWSTR);
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Length = wcslen(String);
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while ( (Length > 0) && (String[Length-1] == L' ') ) {
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Length--;
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}
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SizeOfStringData += (Length + 1) * sizeof(WCHAR);
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}
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}
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//
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// Ideally we want the packet to hold the servername and ExtraInformation.
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// Usually the ExtraInformation gets truncated.
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//
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TotalErrorLogEntryLength =
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min( ExtraInformationLength + sizeof(IO_ERROR_LOG_PACKET) + 1 + SizeOfStringData,
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ERROR_LOG_MAXIMUM_SIZE );
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ErrorLogEntry = (PIO_ERROR_LOG_PACKET)IoAllocateErrorLogEntry(
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(PDEVICE_OBJECT)CnDeviceObject,
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(UCHAR)TotalErrorLogEntryLength
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);
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if (ErrorLogEntry != NULL) {
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PCHAR DumpData;
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ULONG RemainingSpace = TotalErrorLogEntryLength -
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FIELD_OFFSET( IO_ERROR_LOG_PACKET, DumpData );
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ULONG i;
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ULONG SizeOfRawData;
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if (RemainingSpace > SizeOfStringData) {
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SizeOfRawData = RemainingSpace - SizeOfStringData;
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} else {
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SizeOfStringData = RemainingSpace;
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SizeOfRawData = 0;
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}
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//
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// Fill in the error log entry
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//
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ErrorLogEntry->ErrorCode = UniqueErrorCode;
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ErrorLogEntry->MajorFunctionCode = 0;
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ErrorLogEntry->RetryCount = 0;
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ErrorLogEntry->UniqueErrorValue = 0;
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ErrorLogEntry->FinalStatus = NtStatusCode;
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ErrorLogEntry->IoControlCode = 0;
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ErrorLogEntry->DeviceOffset.LowPart = 0;
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ErrorLogEntry->DeviceOffset.HighPart = 0;
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ErrorLogEntry->SequenceNumber = (ULONG)CnSequenceNumber ++;
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ErrorLogEntry->StringOffset = (USHORT)(ROUND_UP_COUNT(
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FIELD_OFFSET(IO_ERROR_LOG_PACKET, DumpData) + SizeOfRawData,
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ALIGN_WORD));
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DumpData = (PCHAR)ErrorLogEntry->DumpData;
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//
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// Append the extra information. This information is typically
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// an SMB header.
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//
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if (( ARGUMENT_PRESENT( ExtraInformationBuffer )) &&
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( SizeOfRawData != 0 )) {
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ULONG Length;
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Length = min(ExtraInformationLength, (USHORT)SizeOfRawData);
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RtlCopyMemory(
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DumpData,
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ExtraInformationBuffer,
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Length);
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ErrorLogEntry->DumpDataSize = (USHORT)Length;
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} else {
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ErrorLogEntry->DumpDataSize = 0;
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}
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ErrorLogEntry->NumberOfStrings = 0;
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if (NumberOfInsertionStrings != 0) {
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PWSTR StringOffset = (PWSTR)((PCHAR)ErrorLogEntry + ErrorLogEntry->StringOffset);
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PWSTR InsertionString;
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//
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// Set up ParmPtr to point to first of the caller's parameters.
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//
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va_start(ParmPtr, LAST_NAMED_ARGUMENT);
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for (i = 0 ; i < NumberOfInsertionStrings ; i+= 1) {
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InsertionString = va_arg(ParmPtr, PWSTR);
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Length = wcslen(InsertionString);
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while ( (Length > 0) && (InsertionString[Length-1] == L' ') ) {
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Length--;
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}
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if ( ((Length + 1) * sizeof(WCHAR)) > SizeOfStringData ) {
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Length = ( SizeOfStringData / sizeof( WCHAR )) - 1;
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}
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if ( Length > 0 ) {
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RtlCopyMemory(StringOffset, InsertionString, Length*sizeof(WCHAR));
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StringOffset += Length;
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*StringOffset++ = L'\0';
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SizeOfStringData -= (Length + 1) * sizeof(WCHAR);
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ErrorLogEntry->NumberOfStrings += 1;
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}
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}
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}
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IoWriteErrorLogEntry(ErrorLogEntry);
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}
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}
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