# diskmodel (version 1.1)# Authors: John Bucy, Greg Ganger# Contributors: John Griffin, Jiri Schindler, Steve Schlosser## Copyright (c) of Carnegie Mellon University, 2003-2005## This software is being provided by the copyright holders under the# following license. By obtaining, using and/or copying this# software, you agree that you have read, understood, and will comply# with the following terms and conditions:## Permission to reproduce, use, and prepare derivative works of this# software is granted provided the copyright and "No Warranty"# statements are included with all reproductions and derivative works# and associated documentation. This software may also be# redistributed without charge provided that the copyright and "No# Warranty" statements are included in all redistributions.## NO WARRANTY. THIS SOFTWARE IS FURNISHED ON AN "AS IS" BASIS.# CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY KIND, EITHER# EXPRESSED OR IMPLIED AS TO THE MATTER INCLUDING, BUT NOT LIMITED# TO: WARRANTY OF FITNESS FOR PURPOSE OR MERCHANTABILITY, EXCLUSIVITY# OF RESULTS OR RESULTS OBTAINED FROM USE OF THIS SOFTWARE. CARNEGIE# MELLON UNIVERSITY DOES NOT MAKE ANY WARRANTY OF ANY KIND WITH# RESPECT TO FREEDOM FROM PATENT, TRADEMARK, OR COPYRIGHT# INFRINGEMENT.  COPYRIGHT HOLDERS WILL BEAR NO LIABILITY FOR ANY USE# OF THIS SOFTWARE OR DOCUMENTATION.   MODULE layout_g4HEADER \#include "../layout_g4.h"RESTYPE struct dm_layout_g4 *PROTO struct dm_layout_if *dm_layout_g4_loadparams(struct lp_block *, struct dm_disk_if *);PARAM TP	LIST	1INIT g4_load_tp(result, l);s0,  -- lowest sector number on the tracksn,  -- highest sector number on the trackspt  -- physical spt on the trackIndicates a range of lbns [0,n] map to sectors [s0,sn] on a track.This will almost always be [0,n-1,n] where n is the phsyical SPT.PARAM IDX			LIST	1DEPEND TPINIT g4_load_idx(result, l);IDX contains a list of g4 layout index nodes which are themselvesrepresented as lists of integers.  The inner lists contain the indexentries which have 8 fields as follows:lbn,       -- the lbn of the first instance, relative to the parentcyl,       -- the lowest cylinder in the first instance, relative to the parentrunlen,    -- the number of lbns this entry coverscylrunlen, -- the number of cylinders for this entrylen,       -- the number of lbns in one instance of the childcyllen,    -- the number of cylinders covered by one instance childtype, -- whether the child is an index node (IDX) or track pattern (TP)child      -- index of the child node in IDX or TPThe entries are given inline so the inner lists will have a multipleof 8 entries.The last index node (last entry in the outer list) is the "root" indexnode that covers all of the LBN and cylinder space.PARAM Slips			LIST	1INIT g4_load_slips(result, l);A list of slip locations.  Each slip location is described by 2integers, the first being the logical offset (lbn) and the secondbeing the number of LBNs are slipped.PARAM Remaps			LIST	1INIT g4_load_remaps(result, l);A list of remapped defects.  Each remap is described by 6 integers:LBN, -- logical offset of remapped locationlen, -- number of contiguous sectors remappedcylinder, head, sector,  -- remap destinationspt -- physical SPT on destination track