| /* |
| * linux/include/linux/ufs_fs_sb.h |
| * |
| * Copyright (C) 1996 |
| * Adrian Rodriguez (adrian@franklins-tower.rutgers.edu) |
| * Laboratory for Computer Science Research Computing Facility |
| * Rutgers, The State University of New Jersey |
| * |
| * $Id: ufs_fs_sb.h,v 1.8 1998/05/06 12:04:40 jj Exp $ |
| * |
| * Write support by Daniel Pirkl <daniel.pirkl@email.cz> |
| */ |
| |
| #ifndef __LINUX_UFS_FS_SB_H |
| #define __LINUX_UFS_FS_SB_H |
| |
| #include <linux/ufs_fs.h> |
| |
| /* |
| * This structure is used for reading disk structures larger |
| * than the size of fragment. |
| */ |
| struct ufs_buffer_head { |
| unsigned fragment; /* first fragment */ |
| unsigned count; /* number of fragments */ |
| struct buffer_head * bh[UFS_MAXFRAG]; /* buffers */ |
| }; |
| |
| struct ufs_cg_private_info { |
| struct ufs_cylinder_group ucg; |
| __u32 c_cgx; /* number of cylidner group */ |
| __u16 c_ncyl; /* number of cyl's this cg */ |
| __u16 c_niblk; /* number of inode blocks this cg */ |
| __u32 c_ndblk; /* number of data blocks this cg */ |
| __u32 c_rotor; /* position of last used block */ |
| __u32 c_frotor; /* position of last used frag */ |
| __u32 c_irotor; /* position of last used inode */ |
| __u32 c_btotoff; /* (__u32) block totals per cylinder */ |
| __u32 c_boff; /* (short) free block positions */ |
| __u32 c_iusedoff; /* (char) used inode map */ |
| __u32 c_freeoff; /* (u_char) free block map */ |
| __u32 c_nextfreeoff; /* (u_char) next available space */ |
| __u32 c_clustersumoff;/* (u_int32) counts of avail clusters */ |
| __u32 c_clusteroff; /* (u_int8) free cluster map */ |
| __u32 c_nclusterblks; /* number of clusters this cg */ |
| }; |
| |
| struct ufs_sb_private_info { |
| struct ufs_buffer_head s_ubh; /* buffer containing super block */ |
| __u32 s_sblkno; /* offset of super-blocks in filesys */ |
| __u32 s_cblkno; /* offset of cg-block in filesys */ |
| __u32 s_iblkno; /* offset of inode-blocks in filesys */ |
| __u32 s_dblkno; /* offset of first data after cg */ |
| __u32 s_cgoffset; /* cylinder group offset in cylinder */ |
| __u32 s_cgmask; /* used to calc mod fs_ntrak */ |
| __u32 s_size; /* number of blocks (fragments) in fs */ |
| __u32 s_dsize; /* number of data blocks in fs */ |
| __u32 s_ncg; /* number of cylinder groups */ |
| __u32 s_bsize; /* size of basic blocks */ |
| __u32 s_fsize; /* size of fragments */ |
| __u32 s_fpb; /* fragments per block */ |
| __u32 s_minfree; /* minimum percentage of free blocks */ |
| __u32 s_bmask; /* `blkoff'' calc of blk offsets */ |
| __u32 s_fmask; /* s_fsize mask */ |
| __u32 s_bshift; /* `lblkno'' calc of logical blkno */ |
| __u32 s_fshift; /* s_fsize shift */ |
| __u32 s_fpbshift; /* fragments per block shift */ |
| __u32 s_fsbtodb; /* fsbtodb and dbtofsb shift constant */ |
| __u32 s_sbsize; /* actual size of super block */ |
| __u32 s_csmask; /* csum block offset */ |
| __u32 s_csshift; /* csum block number */ |
| __u32 s_nindir; /* value of NINDIR */ |
| __u32 s_inopb; /* value of INOPB */ |
| __u32 s_nspf; /* value of NSPF */ |
| __u32 s_npsect; /* # sectors/track including spares */ |
| __u32 s_interleave; /* hardware sector interleave */ |
| __u32 s_trackskew; /* sector 0 skew, per track */ |
| __u32 s_csaddr; /* blk addr of cyl grp summary area */ |
| __u32 s_cssize; /* size of cyl grp summary area */ |
| __u32 s_cgsize; /* cylinder group size */ |
| __u32 s_ntrak; /* tracks per cylinder */ |
| __u32 s_nsect; /* sectors per track */ |
| __u32 s_spc; /* sectors per cylinder */ |
| __u32 s_ipg; /* inodes per group */ |
| __u32 s_fpg; /* fragments per group */ |
| __u32 s_cpc; /* cyl per cycle in postbl */ |
| __s32 s_contigsumsize;/* size of cluster summary array, 44bsd */ |
| __s64 s_qbmask; /* ~usb_bmask */ |
| __s64 s_qfmask; /* ~usb_fmask */ |
| __s32 s_postblformat; /* format of positional layout tables */ |
| __s32 s_nrpos; /* number of rotational positions */ |
| __s32 s_postbloff; /* (__s16) rotation block list head */ |
| __s32 s_rotbloff; /* (__u8) blocks for each rotation */ |
| |
| __u32 s_fpbmask; /* fragments per block mask */ |
| __u32 s_apb; /* address per block */ |
| __u32 s_2apb; /* address per block^2 */ |
| __u32 s_3apb; /* address per block^3 */ |
| __u32 s_apbmask; /* address per block mask */ |
| __u32 s_apbshift; /* address per block shift */ |
| __u32 s_2apbshift; /* address per block shift * 2 */ |
| __u32 s_3apbshift; /* address per block shift * 3 */ |
| __u32 s_nspfshift; /* number of sector per fragment shift */ |
| __u32 s_nspb; /* number of sector per block */ |
| __u32 s_inopf; /* inodes per fragment */ |
| __u32 s_sbbase; /* offset of NeXTstep superblock */ |
| __u32 s_bpf; /* bits per fragment */ |
| __u32 s_bpfshift; /* bits per fragment shift*/ |
| __u32 s_bpfmask; /* bits per fragment mask */ |
| |
| __u32 s_maxsymlinklen;/* upper limit on fast symlinks' size */ |
| }; |
| |
| |
| #define UFS_MAX_GROUP_LOADED 8 |
| #define UFS_CGNO_EMPTY ((unsigned)-1) |
| |
| struct ufs_sb_info { |
| struct ufs_sb_private_info * s_uspi; |
| struct ufs_csum * s_csp[UFS_MAXCSBUFS]; |
| unsigned s_bytesex; |
| unsigned s_flags; |
| struct buffer_head ** s_ucg; |
| struct ufs_cg_private_info * s_ucpi[UFS_MAX_GROUP_LOADED]; |
| unsigned s_cgno[UFS_MAX_GROUP_LOADED]; |
| unsigned short s_cg_loaded; |
| unsigned s_mount_opt; |
| }; |
| |
| /* |
| * Sizes of this structures are: |
| * ufs_super_block_first 512 |
| * ufs_super_block_second 512 |
| * ufs_super_block_third 356 |
| */ |
| struct ufs_super_block_first { |
| __u32 fs_link; |
| __u32 fs_rlink; |
| __u32 fs_sblkno; |
| __u32 fs_cblkno; |
| __u32 fs_iblkno; |
| __u32 fs_dblkno; |
| __u32 fs_cgoffset; |
| __u32 fs_cgmask; |
| __u32 fs_time; |
| __u32 fs_size; |
| __u32 fs_dsize; |
| __u32 fs_ncg; |
| __u32 fs_bsize; |
| __u32 fs_fsize; |
| __u32 fs_frag; |
| __u32 fs_minfree; |
| __u32 fs_rotdelay; |
| __u32 fs_rps; |
| __u32 fs_bmask; |
| __u32 fs_fmask; |
| __u32 fs_bshift; |
| __u32 fs_fshift; |
| __u32 fs_maxcontig; |
| __u32 fs_maxbpg; |
| __u32 fs_fragshift; |
| __u32 fs_fsbtodb; |
| __u32 fs_sbsize; |
| __u32 fs_csmask; |
| __u32 fs_csshift; |
| __u32 fs_nindir; |
| __u32 fs_inopb; |
| __u32 fs_nspf; |
| __u32 fs_optim; |
| union { |
| struct { |
| __u32 fs_npsect; |
| } fs_sun; |
| struct { |
| __s32 fs_state; |
| } fs_sunx86; |
| } fs_u1; |
| __u32 fs_interleave; |
| __u32 fs_trackskew; |
| __u32 fs_id[2]; |
| __u32 fs_csaddr; |
| __u32 fs_cssize; |
| __u32 fs_cgsize; |
| __u32 fs_ntrak; |
| __u32 fs_nsect; |
| __u32 fs_spc; |
| __u32 fs_ncyl; |
| __u32 fs_cpg; |
| __u32 fs_ipg; |
| __u32 fs_fpg; |
| struct ufs_csum fs_cstotal; |
| __s8 fs_fmod; |
| __s8 fs_clean; |
| __s8 fs_ronly; |
| __s8 fs_flags; |
| __s8 fs_fsmnt[UFS_MAXMNTLEN - 212]; |
| |
| }; |
| |
| struct ufs_super_block_second { |
| __s8 fs_fsmnt[212]; |
| __u32 fs_cgrotor; |
| __u32 fs_csp[UFS_MAXCSBUFS]; |
| __u32 fs_maxcluster; |
| __u32 fs_cpc; |
| __u16 fs_opostbl[82]; |
| }; |
| |
| struct ufs_super_block_third { |
| __u16 fs_opostbl[46]; |
| union { |
| struct { |
| __s32 fs_sparecon[53];/* reserved for future constants */ |
| __s32 fs_reclaim; |
| __s32 fs_sparecon2[1]; |
| __s32 fs_state; /* file system state time stamp */ |
| __u32 fs_qbmask[2]; /* ~usb_bmask */ |
| __u32 fs_qfmask[2]; /* ~usb_fmask */ |
| } fs_sun; |
| struct { |
| __s32 fs_sparecon[53];/* reserved for future constants */ |
| __s32 fs_reclaim; |
| __s32 fs_sparecon2[1]; |
| __u32 fs_npsect; /* # sectors/track including spares */ |
| __u32 fs_qbmask[2]; /* ~usb_bmask */ |
| __u32 fs_qfmask[2]; /* ~usb_fmask */ |
| } fs_sunx86; |
| struct { |
| __s32 fs_sparecon[50];/* reserved for future constants */ |
| __s32 fs_contigsumsize;/* size of cluster summary array */ |
| __s32 fs_maxsymlinklen;/* max length of an internal symlink */ |
| __s32 fs_inodefmt; /* format of on-disk inodes */ |
| __u32 fs_maxfilesize[2]; /* max representable file size */ |
| __u32 fs_qbmask[2]; /* ~usb_bmask */ |
| __u32 fs_qfmask[2]; /* ~usb_fmask */ |
| __s32 fs_state; /* file system state time stamp */ |
| } fs_44; |
| } fs_u2; |
| __s32 fs_postblformat; |
| __s32 fs_nrpos; |
| __s32 fs_postbloff; |
| __s32 fs_rotbloff; |
| __s32 fs_magic; |
| __u8 fs_space[1]; |
| }; |
| |
| #endif /* __LINUX_UFS_FS_SB_H */ |