[unix-history] / usr / src / sys / ufs / lfs / lfs.h

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)lfs.h	7.13 (Berkeley) %G%
 */

#define	LFS_LABELPAD	8192		/* LFS label size */
#define	LFS_SBPAD	8192		/* LFS superblock size */
#define MAXMNTLEN	512		/* XXX move from fs.h to mount.h */

/* On-disk and in-memory checkpoint segment usage structure. */
typedef struct segusage SEGUSE;
struct segusage {
	u_long	su_nbytes;		/* number of live bytes */
	u_long	su_lastmod;		/* SEGUSE last modified timestamp */
#define	SEGUSE_ACTIVE		0x1	/* segment is currently being written */
#define	SEGUSE_DIRTY		0x2	/* segment has data in it */
#define	SEGUSE_SUPERBLOCK	0x4	/* segment contains a superblock */
	u_long	su_flags;
};

#define	SEGTABSIZE_SU(fs) \
	(((fs)->lfs_nseg * sizeof(SEGUSE) + \
	((fs)->lfs_bsize - 1)) >> (fs)->lfs_bshift)

/* On-disk file information.  One per file with data blocks in the segment. */
typedef struct finfo FINFO;
struct finfo {
	u_long	fi_nblocks;		/* number of blocks */
	u_long	fi_version;		/* version number */
	u_long	fi_ino;			/* inode number */
	long	fi_blocks[1];		/* array of logical block numbers */
};

/* On-disk and in-memory super block. */
struct lfs {
#define	LFS_MAGIC	0x070162
	u_long	lfs_magic;		/* magic number */
#define	LFS_VERSION	1
	u_long	lfs_version;		/* version number */

	u_long	lfs_size;		/* number of blocks in fs */
	u_long	lfs_ssize;		/* number of blocks per segment */
	u_long	lfs_dsize;		/* number of data blocks in fs */
	u_long	lfs_bsize;		/* size of basic blocks in fs */
	u_long	lfs_fsize;		/* size of frag blocks in fs */
	u_long	lfs_frag;		/* number of frags in a block in fs */

/* Checkpoint region. */
	ino_t	lfs_free;		/* start of the free list */
	u_long	lfs_bfree;		/* number of free blocks */
	u_long	lfs_nfiles;		/* number of allocated inodes */
	daddr_t	lfs_idaddr;		/* inode file disk address */
	ino_t	lfs_ifile;		/* inode file inode number */
	daddr_t	lfs_lastseg;		/* address of last segment written */
	daddr_t	lfs_nextseg;		/* address of next segment to write */
	daddr_t	lfs_curseg;		/* current segment being written */
	daddr_t	lfs_offset;		/* offset in curseg for next partial */
	u_long	lfs_tstamp;		/* time stamp */

/* These are configuration parameters. */
	u_long	lfs_minfree;		/* minimum percentage of free blocks */

/* These fields can be computed from the others. */
	u_long	lfs_dbpseg;		/* disk blocks per segment */
	u_long	lfs_inopb;		/* inodes per block */
	u_long	lfs_ifpb;		/* IFILE entries per block */
	u_long	lfs_sepb;		/* SEGUSE entries per block */
	u_long	lfs_nindir;		/* indirect pointers per block */
	u_long	lfs_nseg;		/* number of segments */
	u_long	lfs_nspf;		/* number of sectors per fragment */
	u_long	lfs_cleansz;		/* cleaner info size in blocks */
	u_long	lfs_segtabsz;		/* segment table size in blocks */

	u_long	lfs_segmask;		/* calculate offset within a segment */
	u_long	lfs_segshift;		/* fast mult/div for segments */
	u_long	lfs_bmask;		/* calc block offset from file offset */
	u_long	lfs_bshift;		/* calc block number from file offset */
	u_long	lfs_ffmask;		/* calc frag offset from file offset */
	u_long	lfs_ffshift;		/* fast mult/div for frag from file */
	u_long	lfs_fbmask;		/* calc frag offset from block offset */
	u_long	lfs_fbshift;		/* fast mult/div for frag from block */
	u_long	lfs_fsbtodb;		/* fsbtodb and dbtofsb shift constant */

#define	LFS_MIN_SBINTERVAL	5	/* minimum superblock segment spacing */
#define	LFS_MAXNUMSB		10	/* superblock disk offsets */
	daddr_t	lfs_sboffs[LFS_MAXNUMSB];

/* These fields are set at mount time and are meaningless on disk. */
	struct	vnode *lfs_ivnode;	/* vnode for the ifile */
	SEGUSE	*lfs_segtab;		/* in-memory segment usage table */
					/* XXX NOT USED */
	void	*XXXlfs_seglist;	/* list of segments being written */
	u_long	lfs_iocount;		/* number of ios pending */
	u_char	lfs_fmod;		/* super block modified flag */
	u_char	lfs_clean;		/* file system is clean flag */
	u_char	lfs_ronly;		/* mounted read-only flag */
	u_char	lfs_flags;		/* currently unused flag */
	u_char	lfs_fsmnt[MAXMNTLEN];	/* name mounted on */
	u_char	pad[3];			/* long-align */

/* Checksum; valid on disk. */
	u_long	lfs_cksum;		/* checksum for superblock checking */
};

/*
 * Inode 0 is the out-of-band inode number, inode 1 is the inode number for
 * the IFILE, the root inode is 2 and the lost+found inode is 3.
 */

/* Fixed inode numbers. */
#define	LFS_UNUSED_INUM	0		/* out of band inode number */
#define	LFS_IFILE_INUM	1		/* IFILE inode number */
#define	LOSTFOUNDINO	3		/* lost+found inode number */
#define	LFS_FIRST_INUM	4		/* first free inode number */

/*
 * Used to access the first spare of the dinode which we use to store
 * the ifile number so we can identify them
 */
#define	di_inum	di_spare[0]

/* Address calculations for metadata located in the inode */
#define	S_INDIR(fs)	-NDADDR
#define	D_INDIR(fs)	(S_INDIR(fs) - NINDIR(fs) - 1)
#define	T_INDIR(fs)	(D_INDIR(fs) - NINDIR(fs) * NINDIR(fs) - 1)

/* Structure used to pass around logical block paths. */
typedef struct _indir {
	long	in_lbn;			/* logical block number */
	int	in_off;			/* offset in buffer */
} INDIR;

/* Unassigned disk address. */
#define	UNASSIGNED	-1

typedef struct ifile IFILE;
struct ifile {
	u_long	if_version;		/* inode version number */
#define	LFS_UNUSED_DADDR	0	/* out-of-band daddr */
	daddr_t	if_daddr;		/* inode disk address */
	ino_t	if_nextfree;		/* next-unallocated inode */
};

/*
 * Cleaner information structure.  This resides in the ifile and is used
 * to pass information between the cleaner and the kernel.
 */
typedef struct _cleanerinfo {
	u_long	clean;			/* K: number of clean segments */
	u_long	dirty;			/* K: number of dirty segments */
} CLEANERINFO;

#define	CLEANSIZE_SU(fs) \
	((sizeof(CLEANERINFO) + (fs)->lfs_bsize - 1) >> (fs)->lfs_bshift)

/*
 * All summary blocks are the same size, so we can always read a summary
 * block easily from a segment.
 */
#define	LFS_SUMMARY_SIZE	512

/* On-disk segment summary information */
typedef struct segsum SEGSUM;
struct segsum {
	u_long	ss_sumsum;		/* check sum of summary block */
	u_long	ss_datasum;		/* check sum of data */
	daddr_t	ss_next;		/* next segment */
	u_long	ss_create;		/* creation time stamp */
	u_long	ss_nfinfo;		/* number of file info structures */
	u_long	ss_ninos;		/* number of inodes in summary */
	/* FINFO's and inode daddr's... */
};

/* NINDIR is the number of indirects in a file system block. */
#define	NINDIR(fs)	((fs)->lfs_nindir)

/* INOPB is the number of inodes in a secondary storage block. */
#define	INOPB(fs)	((fs)->lfs_inopb)

#define	blksize(fs)		((fs)->lfs_bsize)
#define	blkoff(fs, loc)		((loc) & (fs)->lfs_bmask)
#define	fsbtodb(fs, b)		((b) << (fs)->lfs_fsbtodb)
#define	lblkno(fs, loc)		((loc) >> (fs)->lfs_bshift)
#define	lblktosize(fs, blk)	((blk) << (fs)->lfs_bshift)
#define numfrags(fs, loc)	/* calculates (loc / fs->fs_fsize) */ \
	((loc) >> (fs)->lfs_bshift)

#define	datosn(fs, daddr)	/* disk address to segment number */ \
	(((daddr) - (fs)->lfs_sboffs[0]) / fsbtodb((fs), (fs)->lfs_ssize))
#define sntoda(fs, sn) 		/* segment number to disk address */ \
	((daddr_t)((sn) * ((fs)->lfs_ssize << (fs)->lfs_fsbtodb) + \
	    (fs)->lfs_sboffs[0]))

/* Read in the block with the cleaner info from the ifile. */
#define LFS_CLEANERINFO(CP, F, BP) { \
	VTOI((F)->lfs_ivnode)->i_flag |= IACC; \
	if (bread((F)->lfs_ivnode, (daddr_t)0, (F)->lfs_bsize, NOCRED, &(BP))) \
		panic("lfs: ifile read"); \
	(CP) = (CLEANERINFO *)(BP)->b_un.b_addr; \
}

/* Read in the block with a specific inode from the ifile. */
#define	LFS_IENTRY(IP, F, IN, BP) { \
	VTOI((F)->lfs_ivnode)->i_flag |= IACC; \
	if (bread((F)->lfs_ivnode, \
	    (IN) / (F)->lfs_ifpb + (F)->lfs_cleansz + (F)->lfs_segtabsz, \
	    (F)->lfs_bsize, NOCRED, &(BP))) \
		panic("lfs: ifile read"); \
	(IP) = (IFILE *)(BP)->b_un.b_addr + (IN) % (F)->lfs_ifpb; \
}

/* Read in the block with a specific segment usage entry from the ifile. */
#define	LFS_SEGENTRY(SP, F, IN, BP) { \
	VTOI((F)->lfs_ivnode)->i_flag |= IACC; \
	if (bread((F)->lfs_ivnode, (IN) / (F)->lfs_sepb + (F)->lfs_cleansz, \
	    (F)->lfs_bsize, NOCRED, &(BP))) \
		panic("lfs: ifile read"); \
	(SP) = (SEGUSE *)(BP)->b_un.b_addr + (IN) % (F)->lfs_sepb; \
}

/* Write a block and update the inode change times. */
#define	LFS_UBWRITE(BP) { \
	USES_VOP_BWRITE; \
	VTOI((BP)->b_vp)->i_flag |= ICHG | IUPD; \
	VOP_BWRITE(BP); \
}

/*
 * Structures used by lfs_bmapv and lfs_markv to communicate information
 * about inodes and data blocks.
 */
typedef struct block_info {
	ino_t	bi_inode;		/* inode # */
	off_t	bi_lbn;			/* logical block w/in file */
	daddr_t	bi_daddr;		/* disk address of block */
	time_t	bi_segcreate;		/* origin segment create time */
	void	*bi_bp;			/* data buffer */
} BLOCK_INFO;

typedef struct inode_info {
	ino_t	ii_inode;		/* inode # */
	daddr_t	ii_daddr;		/* disk address of block */
	time_t	ii_segcreate;		/* origin segment create time */
	struct dinode *ii_dinode;	/* data buffer */
} INODE_INFO;
Commit	Line	Data
7168b5c1 KB	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*
81b659ea	7	* @(#)lfs.h 7.13 (Berkeley) %G%
7168b5c1 KB	8	*/
7168b5c1 KB	9
b6a5a267 KB	10	#define LFS_LABELPAD 8192 /* LFS label size */
	11	#define LFS_SBPAD 8192 /* LFS superblock size */
	12	#define MAXMNTLEN 512 /* XXX move from fs.h to mount.h */
7168b5c1	13
0b4d6502	14	/* On-disk and in-memory checkpoint segment usage structure. */
d5075120 KB	15	typedef struct segusage SEGUSE;
d5075120 KB	16	struct segusage {
0b4d6502	17	u_long su_nbytes; /* number of live bytes */
39cabb59	18	u_long su_lastmod; /* SEGUSE last modified timestamp */
6ee32ac0 KB	19	#define SEGUSE_ACTIVE 0x1 /* segment is currently being written */
	20	#define SEGUSE_DIRTY 0x2 /* segment has data in it */
	21	#define SEGUSE_SUPERBLOCK 0x4 /* segment contains a superblock */
0b4d6502	22	u_long su_flags;
d5075120 KB	23	};
d5075120 KB	24
0c67132e KB	25	#define SEGTABSIZE_SU(fs) \
	26	(((fs)->lfs_nseg * sizeof(SEGUSE) + \
	27	((fs)->lfs_bsize - 1)) >> (fs)->lfs_bshift)
	28
d5075120 KB	29	/* On-disk file information. One per file with data blocks in the segment. */
	30	typedef struct finfo FINFO;
	31	struct finfo {
	32	u_long fi_nblocks; /* number of blocks */
	33	u_long fi_version; /* version number */
275ca4f0	34	u_long fi_ino; /* inode number */
d5075120 KB	35	long fi_blocks[1]; /* array of logical block numbers */
	36	};
	37
0b4d6502	38	/* On-disk and in-memory super block. */
d5075120	39	struct lfs {
113e98ad	40	#define LFS_MAGIC 0x070162
7168b5c1	41	u_long lfs_magic; /* magic number */
b6a5a267	42	#define LFS_VERSION 1
7168b5c1 KB	43	u_long lfs_version; /* version number */
	44
	45	u_long lfs_size; /* number of blocks in fs */
	46	u_long lfs_ssize; /* number of blocks per segment */
	47	u_long lfs_dsize; /* number of data blocks in fs */
	48	u_long lfs_bsize; /* size of basic blocks in fs */
	49	u_long lfs_fsize; /* size of frag blocks in fs */
	50	u_long lfs_frag; /* number of frags in a block in fs */
7168b5c1 KB	51
	52	/* Checkpoint region. */
	53	ino_t lfs_free; /* start of the free list */
0b4d6502 KB	54	u_long lfs_bfree; /* number of free blocks */
0b4d6502 KB	55	u_long lfs_nfiles; /* number of allocated inodes */
7168b5c1 KB	56	daddr_t lfs_idaddr; /* inode file disk address */
7168b5c1 KB	57	ino_t lfs_ifile; /* inode file inode number */
0c90e94d KB	58	daddr_t lfs_lastseg; /* address of last segment written */
0c90e94d KB	59	daddr_t lfs_nextseg; /* address of next segment to write */
6ee32ac0	60	daddr_t lfs_curseg; /* current segment being written */
0c67132e	61	daddr_t lfs_offset; /* offset in curseg for next partial */
7168b5c1 KB	62	u_long lfs_tstamp; /* time stamp */
	63
	64	/* These are configuration parameters. */
	65	u_long lfs_minfree; /* minimum percentage of free blocks */
	66
	67	/* These fields can be computed from the others. */
0c67132e	68	u_long lfs_dbpseg; /* disk blocks per segment */
7168b5c1 KB	69	u_long lfs_inopb; /* inodes per block */
7168b5c1 KB	70	u_long lfs_ifpb; /* IFILE entries per block */
0c67132e	71	u_long lfs_sepb; /* SEGUSE entries per block */
7168b5c1 KB	72	u_long lfs_nindir; /* indirect pointers per block */
	73	u_long lfs_nseg; /* number of segments */
	74	u_long lfs_nspf; /* number of sectors per fragment */
0c67132e	75	u_long lfs_cleansz; /* cleaner info size in blocks */
7168b5c1 KB	76	u_long lfs_segtabsz; /* segment table size in blocks */
	77
	78	u_long lfs_segmask; /* calculate offset within a segment */
	79	u_long lfs_segshift; /* fast mult/div for segments */
	80	u_long lfs_bmask; /* calc block offset from file offset */
	81	u_long lfs_bshift; /* calc block number from file offset */
	82	u_long lfs_ffmask; /* calc frag offset from file offset */
	83	u_long lfs_ffshift; /* fast mult/div for frag from file */
	84	u_long lfs_fbmask; /* calc frag offset from block offset */
	85	u_long lfs_fbshift; /* fast mult/div for frag from block */
	86	u_long lfs_fsbtodb; /* fsbtodb and dbtofsb shift constant */
	87
0b4d6502 KB	88	#define LFS_MIN_SBINTERVAL 5 /* minimum superblock segment spacing */
	89	#define LFS_MAXNUMSB 10 /* superblock disk offsets */
	90	daddr_t lfs_sboffs[LFS_MAXNUMSB];
	91
	92	/* These fields are set at mount time and are meaningless on disk. */
61a9b5a2	93	struct vnode lfs_ivnode; / vnode for the ifile */
0b4d6502	94	SEGUSE lfs_segtab; / in-memory segment usage table */
0c67132e KB	95	/* XXX NOT USED */
0c67132e KB	96	void XXXlfs_seglist; / list of segments being written */
0c90e94d	97	u_long lfs_iocount; /* number of ios pending */
0b4d6502 KB	98	u_char lfs_fmod; /* super block modified flag */
	99	u_char lfs_clean; /* file system is clean flag */
	100	u_char lfs_ronly; /* mounted read-only flag */
	101	u_char lfs_flags; /* currently unused flag */
	102	u_char lfs_fsmnt[MAXMNTLEN]; /* name mounted on */
	103	u_char pad[3]; /* long-align */
	104
	105	/* Checksum; valid on disk. */
	106	u_long lfs_cksum; /* checksum for superblock checking */
d5075120	107	};
7168b5c1	108
0b4d6502	109	/*
0d70dc17 KB	110	* Inode 0 is the out-of-band inode number, inode 1 is the inode number for
0d70dc17 KB	111	* the IFILE, the root inode is 2 and the lost+found inode is 3.
0b4d6502	112	*/
7168b5c1	113
b6a5a267	114	/* Fixed inode numbers. */
0c90e94d	115	#define LFS_UNUSED_INUM 0 /* out of band inode number */
0d70dc17 KB	116	#define LFS_IFILE_INUM 1 /* IFILE inode number */
	117	#define LOSTFOUNDINO 3 /* lost+found inode number */
	118	#define LFS_FIRST_INUM 4 /* first free inode number */
b6a5a267	119
0b4d6502	120	/*
b6a5a267 KB	121	* Used to access the first spare of the dinode which we use to store
	122	* the ifile number so we can identify them
	123	*/
	124	#define di_inum di_spare[0]
7168b5c1	125
0c67132e KB	126	/* Address calculations for metadata located in the inode */
0c67132e KB	127	#define S_INDIR(fs) -NDADDR
5c4e1af0 CS	128	#define D_INDIR(fs) (S_INDIR(fs) - NINDIR(fs) - 1)
5c4e1af0 CS	129	#define T_INDIR(fs) (D_INDIR(fs) - NINDIR(fs) * NINDIR(fs) - 1)
0c67132e KB	130
	131	/* Structure used to pass around logical block paths. */
	132	typedef struct _indir {
	133	long in_lbn; /* logical block number */
	134	int in_off; /* offset in buffer */
	135	} INDIR;
d5075120	136
39cabb59 KB	137	/* Unassigned disk address. */
	138	#define UNASSIGNED -1
	139
d5075120 KB	140	typedef struct ifile IFILE;
d5075120 KB	141	struct ifile {
7168b5c1	142	u_long if_version; /* inode version number */
0b4d6502	143	#define LFS_UNUSED_DADDR 0 /* out-of-band daddr */
7168b5c1	144	daddr_t if_daddr; /* inode disk address */
0d70dc17	145	ino_t if_nextfree; /* next-unallocated inode */
d5075120	146	};
7168b5c1	147
0c67132e KB	148	/*
	149	* Cleaner information structure. This resides in the ifile and is used
	150	* to pass information between the cleaner and the kernel.
	151	*/
	152	typedef struct _cleanerinfo {
	153	u_long clean; /* K: number of clean segments */
	154	u_long dirty; /* K: number of dirty segments */
0c67132e	155	} CLEANERINFO;
7168b5c1	156
0c67132e KB	157	#define CLEANSIZE_SU(fs) \
0c67132e KB	158	((sizeof(CLEANERINFO) + (fs)->lfs_bsize - 1) >> (fs)->lfs_bshift)
b6a5a267	159
b6a5a267 KB	160	/*
b6a5a267 KB	161	* All summary blocks are the same size, so we can always read a summary
0c90e94d	162	* block easily from a segment.
b6a5a267 KB	163	*/
	164	#define LFS_SUMMARY_SIZE 512
	165
7168b5c1	166	/* On-disk segment summary information */
d5075120 KB	167	typedef struct segsum SEGSUM;
d5075120 KB	168	struct segsum {
0c67132e KB	169	u_long ss_sumsum; /* check sum of summary block */
0c67132e KB	170	u_long ss_datasum; /* check sum of data */
7168b5c1	171	daddr_t ss_next; /* next segment */
7168b5c1 KB	172	u_long ss_create; /* creation time stamp */
7168b5c1 KB	173	u_long ss_nfinfo; /* number of file info structures */
0c67132e	174	u_long ss_ninos; /* number of inodes in summary */
d3b72332	175	/* FINFO's and inode daddr's... */
d5075120	176	};
7168b5c1	177
0b4d6502 KB	178	/* NINDIR is the number of indirects in a file system block. */
	179	#define NINDIR(fs) ((fs)->lfs_nindir)
	180
	181	/* INOPB is the number of inodes in a secondary storage block. */
	182	#define INOPB(fs) ((fs)->lfs_inopb)
	183
0b4d6502 KB	184	#define blksize(fs) ((fs)->lfs_bsize)
	185	#define blkoff(fs, loc) ((loc) & (fs)->lfs_bmask)
	186	#define fsbtodb(fs, b) ((b) << (fs)->lfs_fsbtodb)
	187	#define lblkno(fs, loc) ((loc) >> (fs)->lfs_bshift)
	188	#define lblktosize(fs, blk) ((blk) << (fs)->lfs_bshift)
d5075120 KB	189	#define numfrags(fs, loc) /* calculates (loc / fs->fs_fsize) */ \
d5075120 KB	190	((loc) >> (fs)->lfs_bshift)
39cabb59	191
0d70dc17 KB	192	#define datosn(fs, daddr) /* disk address to segment number */ \
	193	(((daddr) - (fs)->lfs_sboffs[0]) / fsbtodb((fs), (fs)->lfs_ssize))
	194	#define sntoda(fs, sn) /* segment number to disk address */ \
	195	((daddr_t)((sn) * ((fs)->lfs_ssize << (fs)->lfs_fsbtodb) + \
	196	(fs)->lfs_sboffs[0]))
	197
59526076 KB	198	/* Read in the block with the cleaner info from the ifile. */
59526076 KB	199	#define LFS_CLEANERINFO(CP, F, BP) { \
0d70dc17	200	VTOI((F)->lfs_ivnode)->i_flag \|= IACC; \
5ec8c51e	201	if (bread((F)->lfs_ivnode, (daddr_t)0, (F)->lfs_bsize, NOCRED, &(BP))) \
59526076	202	panic("lfs: ifile read"); \
5ec8c51e	203	(CP) = (CLEANERINFO *)(BP)->b_un.b_addr; \
59526076 KB	204	}
59526076 KB	205
0c67132e	206	/* Read in the block with a specific inode from the ifile. */
59526076	207	#define LFS_IENTRY(IP, F, IN, BP) { \
5ec8c51e	208	VTOI((F)->lfs_ivnode)->i_flag \|= IACC; \
0c67132e KB	209	if (bread((F)->lfs_ivnode, \
0c67132e KB	210	(IN) / (F)->lfs_ifpb + (F)->lfs_cleansz + (F)->lfs_segtabsz, \
5ec8c51e	211	(F)->lfs_bsize, NOCRED, &(BP))) \
a9322048	212	panic("lfs: ifile read"); \
5ec8c51e	213	(IP) = (IFILE *)(BP)->b_un.b_addr + (IN) % (F)->lfs_ifpb; \
a9322048 KB	214	}
a9322048 KB	215
0c67132e	216	/* Read in the block with a specific segment usage entry from the ifile. */
59526076	217	#define LFS_SEGENTRY(SP, F, IN, BP) { \
5ec8c51e	218	VTOI((F)->lfs_ivnode)->i_flag \|= IACC; \
0c67132e	219	if (bread((F)->lfs_ivnode, (IN) / (F)->lfs_sepb + (F)->lfs_cleansz, \
5ec8c51e	220	(F)->lfs_bsize, NOCRED, &(BP))) \
0c67132e	221	panic("lfs: ifile read"); \
5ec8c51e	222	(SP) = (SEGUSE *)(BP)->b_un.b_addr + (IN) % (F)->lfs_sepb; \
0c67132e KB	223	}
0c67132e KB	224
0d70dc17 KB	225	/* Write a block and update the inode change times. */
0d70dc17 KB	226	#define LFS_UBWRITE(BP) { \
9c954627	227	USES_VOP_BWRITE; \
0d70dc17	228	VTOI((BP)->b_vp)->i_flag \|= ICHG \| IUPD; \
9c954627	229	VOP_BWRITE(BP); \
5ec8c51e KB	230	}
5ec8c51e KB	231
0c67132e KB	232	/*
	233	* Structures used by lfs_bmapv and lfs_markv to communicate information
	234	* about inodes and data blocks.
	235	*/
	236	typedef struct block_info {
	237	ino_t bi_inode; /* inode # */
	238	off_t bi_lbn; /* logical block w/in file */
	239	daddr_t bi_daddr; /* disk address of block */
	240	time_t bi_segcreate; /* origin segment create time */
	241	void bi_bp; / data buffer */
	242	} BLOCK_INFO;
	243
	244	typedef struct inode_info {
	245	ino_t ii_inode; /* inode # */
	246	daddr_t ii_daddr; /* disk address of block */
	247	time_t ii_segcreate; /* origin segment create time */
	248	struct dinode ii_dinode; / data buffer */
	249	} INODE_INFO;