fxtagtracker.cpp File Reference

#include "fxobjectpch.hpp"

Include dependency graph for fxtagtracker.cpp:

Go to the source code of this file.

Functions
	_Success_ (return !=0) USHORT STDCALL RtlCaptureStackBackTrace(_In_ ULONG FramesToSkip
_In_ ULONG	_Out_writes_to_ (FramesToCapture, return) PVOID *BackTrace

Variables
_In_ ULONG	FramesToCapture
_In_ ULONG _Out_opt_ PULONG	BackTraceHash

Function Documentation

_Out_writes_to_()

_In_ ULONG _Out_writes_to_	(	FramesToCapture	,
		return
	)

_Success_()

_Success_

(

return !

= 0

)

Definition at line 3139 of file fsctrl.c.

{
    PLIST_ENTRY Link;

    PVPB Vpb = Vcb->Vpb;
    PVPB OldVpb;

    BOOLEAN Remount = FALSE;

    PAGED_CODE();

    UNREFERENCED_PARAMETER( IrpContext );

    //
    //  Check whether we are looking for a device only Mvcb.
    //

    for (Link = CdData.VcbQueue.Flink;
         Link != &CdData.VcbQueue;
         Link = Link->Flink) {

        *OldVcb = CONTAINING_RECORD( Link, VCB, VcbLinks );

        //
        //  Skip ourselves.
        //

        if (Vcb == *OldVcb) { continue; }

        //
        //  Look at the Vpb and state of the previous Vcb.
        //

        OldVpb = (*OldVcb)->Vpb;

        if ((OldVpb != Vpb) &&
            (OldVpb->RealDevice == Vpb->RealDevice) &&
            ((*OldVcb)->VcbCondition == VcbNotMounted)) {

            //
            //  If the current disk is a raw disk then it can match a previous music or
            //  raw disk.
            //

            if (FlagOn( Vcb->VcbState, VCB_STATE_AUDIO_DISK)) {

                if (FlagOn( (*OldVcb)->VcbState, VCB_STATE_AUDIO_DISK )) {

                    //
                    //  If we have both TOC then fail the remount if the lengths
                    //  are different or they don't match.
                    //

                    if ((Vcb->TocLength != (*OldVcb)->TocLength) ||
                        ((Vcb->TocLength != 0) &&
                         !RtlEqualMemory( Vcb->CdromToc,
                                          (*OldVcb)->CdromToc,
                                          Vcb->TocLength ))) {

                        continue;
                    }

                    Remount = TRUE;
                    break;
                }

            //
            //  The current disk is not a raw disk.  Go ahead and compare
            //  serial numbers, volume label and TOC.
            //

            } 
            else if ((OldVpb->SerialNumber == Vpb->SerialNumber) &&
                     (Vcb->TocLength == (*OldVcb)->TocLength) &&
                     ((Vcb->TocLength == 0) || RtlEqualMemory( Vcb->CdromToc,
                                                               (*OldVcb)->CdromToc,
                                                               Vcb->TocLength )) &&
                     (Vpb->VolumeLabelLength == OldVpb->VolumeLabelLength) &&
                     (RtlEqualMemory( OldVpb->VolumeLabel,
                                        Vpb->VolumeLabel,
                                        Vpb->VolumeLabelLength ))) {
                //
                //  Remember the old Vcb.  Then set the return value to
                //  TRUE and break.
                //

                Remount = TRUE;
                break;
            }
        }
    }

    return Remount;
}

Variable Documentation

BackTraceHash

_In_ ULONG _Out_opt_ PULONG BackTraceHash

Definition at line 48 of file fxtagtracker.cpp.

Referenced by KeRosCaptureUserStackBackTrace(), RtlCaptureStackBackTrace(), and RtlGetCallersAddress().

FramesToCapture

_In_ ULONG FramesToCapture

Definition at line 45 of file fxtagtracker.cpp.

Referenced by KeRosCaptureUserStackBackTrace(), and RtlCaptureStackBackTrace().