mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
160 lines
3.4 KiB
160 lines
3.4 KiB
/*++
|
|
|
|
Copyright (c) 1992 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
Except.c
|
|
|
|
Abstract:
|
|
|
|
This module implements the exception handling for the NetWare
|
|
redirector called by the dispatch driver.
|
|
|
|
Author:
|
|
|
|
Colin Watson [ColinW] 19-Dec-1992
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include "Procs.h"
|
|
|
|
//
|
|
// The debug trace level
|
|
//
|
|
|
|
#define Dbg (DEBUG_TRACE_CATCH_EXCEPTIONS)
|
|
|
|
#if 0 // Not pageable
|
|
NwExceptionFilter
|
|
NwProcessException
|
|
#endif
|
|
|
|
LONG
|
|
NwExceptionFilter (
|
|
IN PIRP Irp,
|
|
IN PEXCEPTION_POINTERS ExceptionPointer
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine is used to decide if we should or should not handle
|
|
an exception status that is being raised. It inserts the status
|
|
into the IrpContext and either indicates that we should handle
|
|
the exception or bug check the system.
|
|
|
|
Arguments:
|
|
|
|
ExceptionCode - Supplies the exception code to being checked.
|
|
|
|
Return Value:
|
|
|
|
ULONG - returns EXCEPTION_EXECUTE_HANDLER or bugchecks
|
|
|
|
--*/
|
|
|
|
{
|
|
NTSTATUS ExceptionCode;
|
|
#ifdef NWDBG
|
|
PVOID ExceptionAddress;
|
|
ExceptionAddress = ExceptionPointer->ExceptionRecord->ExceptionAddress;
|
|
#endif
|
|
|
|
ExceptionCode = ExceptionPointer->ExceptionRecord->ExceptionCode;
|
|
DebugTrace(0, DEBUG_TRACE_UNWIND, "NwExceptionFilter %X\n", ExceptionCode);
|
|
#ifdef NWDBG
|
|
DebugTrace(0, DEBUG_TRACE_UNWIND, " %X\n", ExceptionAddress);
|
|
#endif
|
|
|
|
//
|
|
// If the exception is STATUS_IN_PAGE_ERROR, get the I/O error code
|
|
// from the exception record.
|
|
//
|
|
|
|
if (ExceptionCode == STATUS_IN_PAGE_ERROR) {
|
|
if (ExceptionPointer->ExceptionRecord->NumberParameters >= 3) {
|
|
ExceptionCode = (NTSTATUS) ExceptionPointer->ExceptionRecord->ExceptionInformation[2];
|
|
}
|
|
}
|
|
|
|
if (FsRtlIsNtstatusExpected( ExceptionCode )) {
|
|
|
|
DebugTrace(0, DEBUG_TRACE_UNWIND, "Exception expected\n", 0);
|
|
return EXCEPTION_EXECUTE_HANDLER;
|
|
|
|
} else {
|
|
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
}
|
|
}
|
|
|
|
NTSTATUS
|
|
NwProcessException (
|
|
IN PIRP_CONTEXT IrpContext,
|
|
IN NTSTATUS ExceptionCode
|
|
)
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine process an exception. It either completes the request
|
|
with the saved exception status or it sends it off to IoRaiseHardError()
|
|
|
|
Arguments:
|
|
|
|
IrpContext - Supplies the Irp being processed
|
|
|
|
ExceptionCode - Supplies the normalized exception status being handled
|
|
|
|
Return Value:
|
|
|
|
NTSTATUS - Returns the results of either posting the Irp or the
|
|
saved completion status.
|
|
|
|
--*/
|
|
|
|
{
|
|
NTSTATUS Status;
|
|
PIRP Irp;
|
|
|
|
DebugTrace(0, Dbg, "NwProcessException\n", 0);
|
|
|
|
Irp = IrpContext->pOriginalIrp;
|
|
Irp->IoStatus.Status = ExceptionCode;
|
|
|
|
//
|
|
// If the error is a hard error, or verify required, then we will complete
|
|
// it if this is a recursive Irp, or with a top-level Irp, either send
|
|
// it to the Fsp for verification, or send it to IoRaiseHardError, who
|
|
// will deal with it.
|
|
//
|
|
|
|
if (ExceptionCode == STATUS_CANT_WAIT) {
|
|
|
|
Status = NwPostToFsp( IrpContext, TRUE );
|
|
|
|
} else {
|
|
|
|
//
|
|
// We got an error, so zero out the information field before
|
|
// completing the request if this was an input operation.
|
|
// Otherwise IopCompleteRequest will try to copy to the user's buffer.
|
|
//
|
|
|
|
if ( FlagOn(Irp->Flags, IRP_INPUT_OPERATION) ) {
|
|
|
|
Irp->IoStatus.Information = 0;
|
|
}
|
|
|
|
Status = ExceptionCode;
|
|
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|