Function Ext2PurgeVolume

Ext4Fsd/fsctl.c:2705–2810

}

NTSTATUS
Ext2PurgeVolume (IN PEXT2_VCB Vcb,
                 IN BOOLEAN  FlushBeforePurge )
{
    PEXT2_FCB       Fcb;
    LIST_ENTRY      List, *Next;

    BOOLEAN         VcbResourceAcquired = FALSE;
    BOOLEAN         FcbResourceAcquired = FALSE;
    BOOLEAN         gdResourceAcquired = FALSE;

    __try {

        ASSERT(Vcb != NULL);
        ASSERT((Vcb->Identifier.Type == EXT2VCB) &&
               (Vcb->Identifier.Size == sizeof(EXT2_VCB)));

        ExAcquireResourceExclusiveLite(&Vcb->MainResource, TRUE);
        VcbResourceAcquired = TRUE;

        if (IsVcbReadOnly(Vcb)) {
            FlushBeforePurge = FALSE;
        }

        InitializeListHead(&List);

        ExAcquireResourceExclusiveLite(&Vcb->FcbLock, TRUE);
        FcbResourceAcquired = TRUE;

        while (!IsListEmpty(&Vcb->FcbList)) {

            Next = RemoveHeadList(&Vcb->FcbList);
            Fcb = CONTAINING_RECORD(Next, EXT2_FCB, Next);

            DEBUG(DL_INF, ( "Ext2PurgeVolume: %wZ refercount=%xh\n",
                            &Fcb->Mcb->FullName, Fcb->ReferenceCount));
            InsertTailList(&List, &Fcb->Next);
        }

        while (!IsListEmpty(&List)) {

            Next = RemoveHeadList(&List);
            Fcb = CONTAINING_RECORD(Next, EXT2_FCB, Next);

            if (ExAcquireResourceExclusiveLite(
                        &Fcb->MainResource,
                        TRUE )) {

                Ext2PurgeFile(Fcb, FlushBeforePurge);

                if (Fcb->ReferenceCount <= 1) {
                    Fcb->TsDrop.QuadPart = 0;
                    InsertHeadList(&Vcb->FcbList, &Fcb->Next);
                } else {
                    InsertTailList(&Vcb->FcbList, &Fcb->Next);
                }
                ExReleaseResourceLite(&Fcb->MainResource);
            }