size_t LVM_Vol_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer);
size_t LVM_SubVol_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Buffer);
size_t LVM_SubVol_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer);
size_t LVM_Vol_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer);
size_t LVM_SubVol_Read(tVFS_Node *Node, off_t Offset, size_t Length, void *Buffer);
size_t LVM_SubVol_Write(tVFS_Node *Node, off_t Offset, size_t Length, const void *Buffer);