VOID NTAPI FatSetFullFileNameInFcb	(	IN PFAT_IRP_CONTEXT	IrpContext,
		IN PFCB	Fcb
	)
Definition at line 688 of file fcb.c.
Referenced by FatCreateDcb(), FatiCreate(), FatiQueryNameInformation(), and FatNotifyReportChange().
{
    UNICODE_STRING LongName;
    PFCB CurFcb = Fcb;
    PFCB StopFcb;
    PWCHAR TmpBuffer;
    ULONG PathLength = 0;

    /* Do nothing if it's already set */
    if (Fcb->FullFileName.Buffer) return;

    /* Allocate a temporary buffer */
    LongName.Length = 0;
    LongName.MaximumLength = FF_MAX_FILENAME * sizeof(WCHAR);
    LongName.Buffer =
        FsRtlAllocatePoolWithTag(PagedPool,
                                 FF_MAX_FILENAME * sizeof(WCHAR),
                                 TAG_FILENAME);

    /* Go through all parents to calculate needed length */
    while (CurFcb != Fcb->Vcb->RootDcb)
    {
        /* Does current FCB have FullFileName set? */
        if (CurFcb != Fcb &&
            CurFcb->FullFileName.Buffer)
        {
            /* Yes, just use it! */
            PathLength += CurFcb->FullFileName.Length;

            Fcb->FullFileName.Buffer =
                FsRtlAllocatePoolWithTag(PagedPool,
                                         PathLength,
                                         TAG_FILENAME);

            RtlCopyMemory(Fcb->FullFileName.Buffer,
                          CurFcb->FullFileName.Buffer,
                          CurFcb->FullFileName.Length);

            break;
        }

        /* Sum up length of a current item */
        PathLength += CurFcb->FileNameLength + sizeof(WCHAR);

        /* Go to the parent */
        CurFcb = CurFcb->ParentFcb;
    }

    /* Allocate FullFileName if it wasn't already allocated above */
    if (!Fcb->FullFileName.Buffer)
    {
        Fcb->FullFileName.Buffer =
            FsRtlAllocatePoolWithTag(PagedPool,
                                     PathLength,
                                     TAG_FILENAME);
    }

    StopFcb = CurFcb;

    CurFcb = Fcb;
    TmpBuffer =  Fcb->FullFileName.Buffer + PathLength / sizeof(WCHAR);

    /* Set lengths */
    Fcb->FullFileName.Length = PathLength;
    Fcb->FullFileName.MaximumLength = PathLength;

    while (CurFcb != StopFcb)
    {
        /* Get its unicode name */
        FatGetFcbUnicodeName(IrpContext,
                             CurFcb,
                             &LongName);

        /* Copy it */
        TmpBuffer -= LongName.Length / sizeof(WCHAR);
        RtlCopyMemory(TmpBuffer, LongName.Buffer, LongName.Length);

        /* Append with a backslash */
        TmpBuffer -= 1;
        *TmpBuffer = L'\\';

        /* Go to the parent */
        CurFcb = CurFcb->ParentFcb;
    }

    /* Free the temp buffer */
    ExFreePool(LongName.Buffer);
}
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