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/*
* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc., 59
* Temple Place - Suite 330, Boston MA 02111-1307, USA.
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/
*/
typedef struct fs_geometry {
/*
* these types should match the superblock types
*/
__uint32_t sb_blocksize; /* blocksize (bytes) */
xfs_drfsbno_t sb_dblocks; /* # data blocks */
xfs_drfsbno_t sb_rblocks; /* # realtime blocks */
xfs_drtbno_t sb_rextents; /* # realtime extents */
uuid_t sb_uuid; /* fs uuid */
xfs_dfsbno_t sb_logstart; /* starting log block # */
xfs_agblock_t sb_rextsize; /* realtime extent size (blocks )*/
xfs_agblock_t sb_agblocks; /* # of blocks per ag */
xfs_agnumber_t sb_agcount; /* # of ags */
xfs_extlen_t sb_rbmblocks; /* # of rt bitmap blocks */
xfs_extlen_t sb_logblocks; /* # of log blocks */
__uint16_t sb_sectsize; /* volume sector size (bytes) */
__uint16_t sb_inodesize; /* inode size (bytes) */
__uint8_t sb_imax_pct; /* max % of fs for inode space */
/*
* these don't have to match the superblock types but are placed
* before sb_shared_vn because these values don't have to be
* checked manually. These variables will be set only on
* filesystems with dependably good (fully initialized)
* secondary superblock sectors, will be stamped in all
* superblocks at mkfs time, and are features that cannot
* be downgraded unless all superblocks in the filesystem
* are rewritten.
*/
int sb_extflgbit; /* extent flag feature bit set */
/*
* fields after this point have to be checked manually in compare_sb()
*/
__uint8_t sb_shared_vn; /* shared version number */
xfs_extlen_t sb_inoalignmt; /* inode chunk alignment, fsblocks */
__uint32_t sb_unit; /* stripe or raid unit */
__uint32_t sb_width; /* stripe or width unit */
/*
* these don't have to match, they track superblock properties
* that could have been upgraded and/or downgraded during
* run-time so that the primary superblock has them but the
* secondaries do not.
* Plus, they have associated data fields whose data fields may
* be corrupt in cases where the filesystem was made on a
* pre-6.5 campus alpha mkfs and the feature was enabled on
* the filesystem later.
*/
int sb_ialignbit; /* sb has inode alignment bit set */
int sb_salignbit; /* sb has stripe alignment bit set */
int sb_sharedbit; /* sb has inode alignment bit set */
int sb_fully_zeroed; /* has zeroed secondary sb sectors */
} fs_geometry_t;
typedef struct fs_geo_list {
struct fs_geo_list *next;
int refs;
int index;
fs_geometry_t geo;
} fs_geo_list_t;
/*
* fields for sb_last_nonzero
*/
#define XR_SB_COUNTERS 0x0001
#define XR_SB_INOALIGN 0x0002
#define XR_SB_SALIGN 0x0004
/*
* what got modified by verify_set_* routines
*/
#define XR_AG_SB 0x1
#define XR_AG_AGF 0x2
#define XR_AG_AGI 0x4
#define XR_AG_SB_SEC 0x8
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