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* linux/include/linux/ufs_fs.h
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* Adrian Rodriguez (adrian@franklins-tower.rutgers.edu)
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* Laboratory for Computer Science Research Computing Facility
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* Rutgers, The State University of New Jersey
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* $Id: ufs_fs.h,v 1.1 2001/04/27 21:55:09 bencollins Exp $
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#ifndef __LINUX_UFS_FS_H
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#define __LINUX_UFS_FS_H
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#include <non-linux/types.h>
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#define UFS_BBSIZE 8192
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#define UFS_SBLOCK 8192
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#define UFS_SBSIZE 8192
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#define UFS_MAGIC 0x00011954
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#define UFS_FSIZE 1024
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#define UFS_BSIZE 8192
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#define UFS_IND_BLOCK (UFS_NDADDR + 0)
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#define UFS_DIND_BLOCK (UFS_NDADDR + 1)
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#define UFS_TIND_BLOCK (UFS_NDADDR + 2)
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#define UFS_USEEFT ((__u16)65535)
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#define UFS_FSOK 0x7c269d38
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#define UFS_FSACTIVE ((char)0x00)
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#define UFS_FSCLEAN ((char)0x01)
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#define UFS_FSSTABLE ((char)0x02)
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#define UFS_FSBAD ((char)0xff)
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/* Flags for ufs_sb_info */
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#define UFS_DEBUG 0x00000001
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#define UFS_DEBUG_INODE 0x00000002
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#define UFS_DEBUG_NAMEI 0x00000004
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#define UFS_DEBUG_LINKS 0x00000008
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#define UFS_ADDR_PER_BLOCK(sb) ((sb)->u.ufs_sb.s_bsize >> 2)
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#define UFS_ADDR_PER_BLOCK_BITS(sb) ((sb)->u.ufs_sb.s_bshift - 2)
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/* Test if the inode number is valid. */
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#define ufs_ino_ok(inode) ((inode->i_ino < 2) && \
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(inode->i_ino > (inode->i_sb->u.ufs_sb.s_ncg * inode->i_sb->u.ufs_sb.s_ipg - 1)))
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/* Convert (sb,cg) to the first physical block number for that cg. */
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#define ufs_cgstart(sb, cg) \
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(((sb)->u.ufs_sb.s_fpg * (cg)) + (sb)->u.ufs_sb.s_cgoffset * ((cg) & ~((sb)->u.ufs_sb.s_cgmask)))
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/* Convert (sb,cg) to the first phys. block number for inodes in that cg. */
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#define ufs_cgimin(sb, cg) (ufs_cgstart((sb), (cg)) + (sb)->u.ufs_sb.s_iblkno)
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#define ufs_cgdmin(sb, cg) (ufs_cgstart((sb), (cg)) + (sb)->u.ufs_sb.s_dblkno)
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/* Convert an inode number to a cg number. */
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/* XXX - this can be optimized if s_ipg is a power of 2. */
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#define ufs_ino2cg(inode) ((inode)->i_ino/(inode)->i_sb->u.ufs_sb.s_ipg)
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#define UFS_MAXNAMLEN 255
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#define ufs_lbn(sb, block) ((block) >> (sb)->u.ufs_sb.s_lshift)
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#define ufs_boff(sb, block) ((block) & ~((sb)->u.ufs_sb.s_lmask))
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#define ufs_dbn(sb, block, boff) ((block) + ufs_boff((sb), (boff)))
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__u32 d_ino; /* inode number of this entry */
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__u16 d_reclen; /* length of this entry */
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__u16 d_namlen; /* actual length of d_name */
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char d_name[UFS_MAXNAMLEN + 1]; /* file name */
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__u32 cs_ndir; /* number of directories */
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__u32 cs_nbfree; /* number of free blocks */
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__u32 cs_nifree; /* number of free inodes */
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__u32 cs_nffree; /* number of free frags */
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typedef struct _ufsquad {
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* This is the actual superblock, as it is laid out on the disk.
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struct ufs_superblock {
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__u32 fs_link; /* UNUSED */
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__u32 fs_rlink; /* UNUSED */
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__u32 fs_sblkno; /* addr of super-block in filesys */
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__u32 fs_cblkno; /* offset of cyl-block in filesys */
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__u32 fs_iblkno; /* offset of inode-blocks in filesys */
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__u32 fs_dblkno; /* offset of first data after cg */
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__u32 fs_cgoffset; /* cylinder group offset in cylinder */
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__u32 fs_cgmask; /* used to calc mod fs_ntrak */
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time_t fs_time; /* last time written */
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__u32 fs_size; /* number of blocks in fs */
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__u32 fs_dsize; /* number of data blocks in fs */
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__u32 fs_ncg; /* number of cylinder groups */
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__u32 fs_bsize; /* size of basic blocks in fs */
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__u32 fs_fsize; /* size of frag blocks in fs */
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__u32 fs_frag; /* number of frags in a block in fs */
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/* these are configuration parameters */
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__u32 fs_minfree; /* minimum percentage of free blocks */
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__u32 fs_rotdelay; /* num of ms for optimal next block */
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__u32 fs_rps; /* disk revolutions per second */
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/* these fields can be computed from the others */
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__u32 fs_bmask; /* ``blkoff'' calc of blk offsets */
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__u32 fs_fmask; /* ``fragoff'' calc of frag offsets */
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__u32 fs_bshift; /* ``lblkno'' calc of logical blkno */
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__u32 fs_fshift; /* ``numfrags'' calc number of frags */
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/* these are configuration parameters */
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__u32 fs_maxcontig; /* max number of contiguous blks */
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__u32 fs_maxbpg; /* max number of blks per cyl group */
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/* these fields can be computed from the others */
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__u32 fs_fragshift; /* block to frag shift */
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__u32 fs_fsbtodb; /* fsbtodb and dbtofsb shift constant */
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__u32 fs_sbsize; /* actual size of super block */
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__u32 fs_csmask; /* csum block offset */
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__u32 fs_csshift; /* csum block number */
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__u32 fs_nindir; /* value of NINDIR */
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__u32 fs_inopb; /* value of INOPB */
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__u32 fs_nspf; /* value of NSPF */
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/* yet another configuration parameter */
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__u32 fs_optim; /* optimization preference, see below */
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/* these fields are derived from the hardware */
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__u32 fs_npsect; /* # sectors/track including spares */
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__u32 fs_interleave; /* hardware sector interleave */
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__u32 fs_trackskew; /* sector 0 skew, per track */
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/* a unique id for this filesystem (currently unused and unmaintained) */
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/* In 4.3 Tahoe this space is used by fs_headswitch and fs_trkseek */
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/* Neither of those fields is used in the Tahoe code right now but */
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/* there could be problems if they are. */
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__u32 fs_id[2]; /* file system id */
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/* sizes determined by number of cylinder groups and their sizes */
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__u32 fs_csaddr; /* blk addr of cyl grp summary area */
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__u32 fs_cssize; /* size of cyl grp summary area */
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__u32 fs_cgsize; /* cylinder group size */
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/* these fields are derived from the hardware */
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__u32 fs_ntrak; /* tracks per cylinder */
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__u32 fs_nsect; /* sectors per track */
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__u32 fs_spc; /* sectors per cylinder */
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/* this comes from the disk driver partitioning */
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__u32 fs_ncyl; /* cylinders in file system */
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/* these fields can be computed from the others */
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__u32 fs_cpg; /* cylinders per group */
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__u32 fs_ipg; /* inodes per group */
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__u32 fs_fpg; /* blocks per group * fs_frag */
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/* this data must be re-computed after crashes */
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struct ufs_csum fs_cstotal; /* cylinder summary information */
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/* these fields are cleared at mount time */
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__u8 fs_fmod; /* super block modified flag */
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__u8 fs_clean; /* file system is clean flag */
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__u8 fs_ronly; /* mounted read-only flag */
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__u8 fs_flags; /* currently unused flag */
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__u8 fs_fsmnt[MAXMNTLEN]; /* name mounted on */
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/* these fields retain the current block allocation info */
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__u32 fs_cgrotor; /* last cg searched */
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struct ufs_csum * fs_csp[MAXCSBUFS]; /* list of fs_cs info buffers */
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__u32 fs_cpc; /* cyl per cycle in postbl */
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__u16 fs_opostbl[16][8]; /* old rotation block list head */
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__s32 fs_sparecon[55]; /* reserved for future constants */
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__s32 fs_state; /* file system state time stamp */
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ufsquad fs_qbmask; /* ~usb_bmask - for use with __s64 size */
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ufsquad fs_qfmask; /* ~usb_fmask - for use with __s64 size */
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__s32 fs_postblformat; /* format of positional layout tables */
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__s32 fs_nrpos; /* number of rotational positions */
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__s32 fs_postbloff; /* (__s16) rotation block list head */
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__s32 fs_rotbloff; /* (__u8) blocks for each rotation */
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__s32 fs_magic; /* magic number */
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__u8 fs_space[1]; /* list of blocks for each rotation */
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* structure of an on-disk inode
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__u16 ui_mode; /* 0x0 */
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__u16 ui_nlink; /* 0x2 */
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__u16 ui_suid; /* 0x4 */
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__u16 ui_sgid; /* 0x6 */
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ufsquad ui_size; /* 0x8 */ /* XXX - should be __u64 */
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struct timeval ui_atime; /* 0x10 */
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struct timeval ui_mtime; /* 0x18 */
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struct timeval ui_ctime; /* 0x20 */
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__u32 ui_db[UFS_NDADDR]; /* 0x28 data blocks */
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__u32 ui_ib[UFS_NINDIR]; /* 0x58 indirect blocks */
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__u32 ui_flags; /* 0x64 unused */
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__u32 ui_blocks; /* 0x68 blocks in use */
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__u32 ui_gen; /* 0x6c generation number XXX - what is this? */
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__u32 ui_shadow; /* 0x70 shadow inode XXX - what is this?*/
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__u32 ui_uid; /* 0x74 long EFT version of uid */
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__u32 ui_gid; /* 0x78 long EFT version of gid */
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__u32 ui_oeftflag; /* 0x7c reserved */
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* Function prototypes
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extern int ufs_bmap (struct inode *, int);
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extern void ufs_read_inode(struct inode * inode);
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extern void ufs_put_inode(struct inode * inode);
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extern void ufs_print_inode (struct inode *);
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extern int ufs_lookup (struct inode *, const char *, int, struct inode **);
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extern void ufs_warning (struct super_block *, const char *, const char *, ...)
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__attribute__ ((format (printf, 3, 4)));
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extern int init_ufs_fs(void);
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* Inodes and files operations
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extern struct inode_operations ufs_dir_inode_operations;
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extern struct file_operations ufs_dir_operations;
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extern struct inode_operations ufs_file_inode_operations;
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extern struct file_operations ufs_file_operations;
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extern struct inode_operations ufs_symlink_inode_operations;
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extern struct file_operations ufs_symlink_operations;
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/* Byte swapping 32/16-bit quantities into little endian format. */
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extern int ufs_need_swab;
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extern __inline__ __u32 ufs_swab32(__u32 value)
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return (ufs_need_swab ? ((value >> 24) |
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((value >> 8) & 0xff00) |
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((value << 8) & 0xff0000) |
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(value << 24)) : value);
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extern __inline__ __u16 ufs_swab16(__u16 value)
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return (ufs_need_swab ? ((value >> 8) |
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(value << 8)) : value);
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#endif /* __KERNEL__ */
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#endif /* __LINUX_UFS_FS_H */
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removed
include/non-linux/ufs_fs.h
