58 struct lfs {  struct
60 	u_int32_t lfs_magic;		/* magic number */  argument
62 	u_int32_t lfs_version;		/* version number */  argument
64 	u_int32_t lfs_size;		/* number of blocks in fs */  argument
65 	u_int32_t lfs_ssize;		/* number of blocks per segment */  argument
66 	u_int32_t lfs_dsize;		/* number of disk blocks in fs */  argument
67 	u_int32_t lfs_bsize;		/* file system block size */  argument
68 	u_int32_t lfs_fsize;		/* size of frag blocks in fs */  argument
69 	u_int32_t lfs_frag;		/* number of frags in a block in fs */  argument
72 	ino_t	  lfs_free;		/* start of the free list */  argument
73 	u_int32_t lfs_bfree;		/* number of free disk blocks */  argument
74 	u_int32_t lfs_nfiles;		/* number of allocated inodes */  argument
75 	int32_t	  lfs_avail;		/* blocks available for writing */  argument
76 	u_int32_t lfs_uinodes;		/* inodes in cache not yet on disk */  argument
77 	ufs_daddr_t lfs_idaddr;		/* inode file disk address */  argument
78 	ino_t	  lfs_ifile;		/* inode file inode number */  argument
79 	ufs_daddr_t lfs_lastseg;	/* address of last segment written */  argument
80 	ufs_daddr_t lfs_nextseg;	/* address of next segment to write */  argument
81 	ufs_daddr_t lfs_curseg;		/* current segment being written */  argument
82 	ufs_daddr_t lfs_offset;		/* offset in curseg for next partial */  argument
83 	ufs_daddr_t lfs_lastpseg;	/* address of last partial written */  argument
84 	u_int32_t lfs_tstamp;		/* time stamp */  argument
87 	u_int32_t lfs_minfree;		/* minimum percentage of free blocks */  argument
90 	u_int64_t lfs_maxfilesize;	/* maximum representable file size */  argument
91 	u_int32_t lfs_dbpseg;		/* disk blocks per segment */  argument
92 	u_int32_t lfs_inopb;		/* inodes per block */  argument
93 	u_int32_t lfs_ifpb;		/* IFILE entries per block */  argument
94 	u_int32_t lfs_sepb;		/* SEGUSE entries per block */  argument
95 	u_int32_t lfs_nindir;		/* indirect pointers per block */  argument
96 	u_int32_t lfs_nseg;		/* number of segments */  argument
97 	u_int32_t lfs_nspf;		/* number of sectors per fragment */  argument
98 	u_int32_t lfs_cleansz;		/* cleaner info size in blocks */  argument
99 	u_int32_t lfs_segtabsz;		/* segment table size in blocks */  argument
101 	u_int32_t lfs_segmask;		/* calculate offset within a segment */  argument
102 	u_int32_t lfs_segshift;		/* fast mult/div for segments */  argument
103 	u_int64_t lfs_bmask;		/* calc block offset from file offset */  argument
104 	u_int32_t lfs_bshift;		/* calc block number from file offset */  argument
105 	u_int64_t lfs_ffmask;		/* calc frag offset from file offset */  argument
106 	u_int32_t lfs_ffshift;		/* fast mult/div for frag from file */  argument
107 	u_int64_t lfs_fbmask;		/* calc frag offset from block offset */  argument
108 	u_int32_t lfs_fbshift;		/* fast mult/div for frag from block */  argument
109 	u_int32_t lfs_fsbtodb;		/* fsbtodb and dbtofsb shift constant */  argument
110 	u_int32_t lfs_sushift;		/* fast mult/div for segusage table */  argument
112 	int32_t	  lfs_maxsymlinklen;	/* max length of an internal symlink */  argument
116 	ufs_daddr_t lfs_sboffs[LFS_MAXNUMSB];  argument
119 	u_int32_t lfs_cksum;		/* checksum for superblock checking */  argument
122 	struct segment *lfs_sp;		/* current segment being written */  argument
123 	struct vnode *lfs_ivnode;	/* vnode for the ifile */  argument
124 	u_long	  lfs_seglock;		/* single-thread the segment writer */  argument
125 	pid_t	  lfs_lockpid;		/* pid of lock holder */  argument
126 	u_long	  lfs_iocount;		/* number of ios pending */  argument
127 	u_long	  lfs_writer;		/* don't allow any dirops to start */  argument
128 	u_long	  lfs_dirops;		/* count of active directory ops */  argument
129 	u_long	  lfs_doifile;		/* Write ifile blocks on next write */  argument
130 	u_long	  lfs_nactive;		/* Number of segments since last ckp */  argument
131 	int8_t	  lfs_fmod;		/* super block modified flag */  argument
132 	int8_t	  lfs_clean;		/* file system is clean flag */  argument
133 	int8_t	  lfs_ronly;		/* mounted read-only flag */  argument
134 	int8_t	  lfs_flags;		/* currently unused flag */  argument
135 	u_char	  lfs_fsmnt[MNAMELEN];	/* name mounted on */  argument
137 	int32_t	  lfs_pad[40];		/* round to 512 bytes */  argument