dirctrl.c File Reference

#include "fatprocs.h"

Include dependency graph for dirctrl.c:

Go to the source code of this file.

Macros
#define	BugCheckFileId   (FAT_BUG_CHECK_DIRCTRL)
#define	Dbg   (DEBUG_TRACE_DIRCTRL)

Functions
	_Requires_lock_held_ (_Global_critical_region_)
VOID	FatGetDirTimes (PIRP_CONTEXT IrpContext, PDIRENT Dirent, PFILE_DIRECTORY_INFORMATION DirInfo)

Variables
WCHAR	Fat8QMdot3QM [12]

Macro Definition Documentation

BugCheckFileId

#define BugCheckFileId   (FAT_BUG_CHECK_DIRCTRL)

Definition at line 23 of file dirctrl.c.

Dbg

#define Dbg   (DEBUG_TRACE_DIRCTRL)

Definition at line 29 of file dirctrl.c.

Function Documentation

_Requires_lock_held_()

_Requires_lock_held_

(

_Global_critical_region_

)

Definition at line 38 of file dirctrl.c.

{
    NTSTATUS Status;
    PIRP_CONTEXT IrpContext = NULL;

    BOOLEAN TopLevel;

    PAGED_CODE();

    DebugTrace(+1, Dbg, "FatFsdDirectoryControl\n", 0);

    //
    //  Call the common directory Control routine, with blocking allowed if
    //  synchronous
    //

    FsRtlEnterFileSystem();

    TopLevel = FatIsIrpTopLevel( Irp );

    _SEH2_TRY {

        IrpContext = FatCreateIrpContext( Irp, CanFsdWait( Irp ) );

        Status = FatCommonDirectoryControl( IrpContext, Irp );

    } _SEH2_EXCEPT(FatExceptionFilter( IrpContext, _SEH2_GetExceptionInformation() )) {

        //
        //  We had some trouble trying to perform the requested
        //  operation, so we'll abort the I/O request with
        //  the error status that we get back from the
        //  execption code
        //

        Status = FatProcessException( IrpContext, Irp, _SEH2_GetExceptionCode() );
    } _SEH2_END;

    if (TopLevel) { IoSetTopLevelIrp( NULL ); }

    FsRtlExitFileSystem();

    //
    //  And return to our caller
    //

    DebugTrace(-1, Dbg, "FatFsdDirectoryControl -> %08lx\n", Status);

    UNREFERENCED_PARAMETER( VolumeDeviceObject );

    return Status;
}

FatGetDirTimes()

VOID FatGetDirTimes	(	PIRP_CONTEXT	IrpContext,
		PDIRENT	Dirent,
		PFILE_DIRECTORY_INFORMATION	DirInfo
	)

Definition at line 1330 of file dirctrl.c.

{
    PAGED_CODE();

    //
    //  Start with the Last Write Time.
    //

    DirInfo->LastWriteTime =
        FatFatTimeToNtTime( IrpContext,
                            Dirent->LastWriteTime,
                            0 );

    //
    //  These fields are only non-zero when in Chicago mode.
    //

    if (FatData.ChicagoMode) {

        //
        //  Do a quick check here for Creation and LastAccess
        //  times that are the same as the LastWriteTime.
        //

        if (*((UNALIGNED LONG *)&Dirent->CreationTime) ==
            *((UNALIGNED LONG *)&Dirent->LastWriteTime)) {

            DirInfo->CreationTime.QuadPart =

                DirInfo->LastWriteTime.QuadPart +
                Dirent->CreationMSec * 10 * 1000 * 10;

        } else {

            //
            //  Only do the really hard work if this field is non-zero.
            //

            if (((PUSHORT)Dirent)[8] != 0) {

                DirInfo->CreationTime =
                    FatFatTimeToNtTime( IrpContext,
                                        Dirent->CreationTime,
                                        Dirent->CreationMSec );

            } else {

                ExLocalTimeToSystemTime( &FatJanOne1980,
                                         &DirInfo->CreationTime );
            }
        }

        //
        //  Do a quick check for LastAccessDate.
        //

        if (*((PUSHORT)&Dirent->LastAccessDate) ==
            *((PUSHORT)&Dirent->LastWriteTime.Date)) {

            PFAT_TIME WriteTime;

            WriteTime = &Dirent->LastWriteTime.Time;

            DirInfo->LastAccessTime.QuadPart =
                DirInfo->LastWriteTime.QuadPart -
                UInt32x32To64(((WriteTime->DoubleSeconds * 2) +
                               (WriteTime->Minute * 60) +
                               (WriteTime->Hour * 60 * 60)),
                              1000 * 1000 * 10);

        } else {

            //
            //  Only do the really hard work if this field is non-zero.
            //

            if (((PUSHORT)Dirent)[9] != 0) {

                DirInfo->LastAccessTime =
                    FatFatDateToNtTime( IrpContext,
                                        Dirent->LastAccessDate );

            } else {

                ExLocalTimeToSystemTime( &FatJanOne1980,
                                         &DirInfo->LastAccessTime );
            }
        }
    }
}

Variable Documentation

Fat8QMdot3QM

WCHAR Fat8QMdot3QM[12]

Initial value:

= { DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM, DOS_QM,
                           L'.', DOS_QM, DOS_QM, DOS_QM}

Definition at line 31 of file dirctrl.c.