| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. |
| * All Rights Reserved. |
| */ |
| |
| typedef struct fs_geometry { |
| /* |
| * these types should match the superblock types |
| */ |
| uint32_t sb_blocksize; /* blocksize (bytes) */ |
| xfs_rfsblock_t sb_dblocks; /* # data blocks */ |
| xfs_rfsblock_t sb_rblocks; /* # realtime blocks */ |
| xfs_rtblock_t sb_rextents; /* # realtime extents */ |
| xfs_fsblock_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 |
