Function Ext2InsertMcb

Ext4Fsd/memory.c:1681–1739

}

VOID
Ext2InsertMcb (
    PEXT2_VCB Vcb,
    PEXT2_MCB Parent,
    PEXT2_MCB Child
)
{
    BOOLEAN     LockAcquired = FALSE;
    PEXT2_MCB   Mcb = NULL;

    __try {

        ExAcquireResourceExclusiveLite(
            &Vcb->McbLock,
            TRUE );
        LockAcquired = TRUE;

        /* use it's target if it's a symlink */
        if (IsMcbSymLink(Parent)) {
            Parent = Parent->Target;
            ASSERT(!IsMcbSymLink(Parent));
        }

        Mcb = Parent->Child;
        while (Mcb) {
            if (Mcb == Child) {
                break;
            }
            Mcb = Mcb->Next;
        }

        if (Mcb) {
            /* already attached in the list */
            DEBUG(DL_ERR, ( "Ext2InsertMcb: Child Mcb is alreay attached.\n"));
            if (!IsFlagOn(Mcb->Flags, MCB_ENTRY_TREE)) {
                SetLongFlag(Child->Flags, MCB_ENTRY_TREE);
                DEBUG(DL_ERR, ( "Ext2InsertMcb: Child Mcb's flag isn't set.\n"));
            }

            DbgBreak();

        } else {

            /* insert this Mcb into the head */
            Child->Next = Parent->Child;
            Parent->Child = Child;
            Child->Parent = Parent;
            Child->de->d_parent = Parent->de;
            Ext2ReferMcb(Parent);
            SetLongFlag(Child->Flags, MCB_ENTRY_TREE);
        }

    } __finally {

        if (LockAcquired) {
            ExReleaseResourceLite(&Vcb->McbLock);
        }
    }