xref: /csrg-svn/sbin/fsck/fsck.h (revision 16260)

/* @(#)fsck.h	3.1 (Berkeley) 03/31/84 */

/* RECONSTRUCT ONLY BAD CG IN PASS 6 */

#define	MAXDUP		10	/* limit on dup blks (per inode) */
#define	MAXBAD		10	/* limit on bad blks (per inode) */
#define	DUPTBLSIZE	100	/* num of dup blocks to remember */
#define	MAXLNCNT	500	/* num zero link cnts to remember */

typedef	int	(*SIG_TYP)();

#ifndef BUFSIZ
#define BUFSIZ 1024
#endif

#define	MAXNINDIR	(MAXBSIZE / sizeof (daddr_t))
#define	MAXINOPB	(MAXBSIZE / sizeof (struct dinode))
#define	SPERB		(MAXBSIZE / sizeof(short))

#define	USTATE	0		/* inode not allocated */
#define	FSTATE	01		/* inode is file */
#define	DSTATE	02		/* inode is directory */
#define	CLEAR	03		/* inode is to be cleared */

typedef struct dinode	DINODE;
typedef struct direct	DIRECT;

#define	ALLOC	((dp->di_mode & IFMT) != 0)
#define	DIRCT	((dp->di_mode & IFMT) == IFDIR)
#define	SPECIAL	((dp->di_mode & IFMT) == IFBLK || (dp->di_mode & IFMT) == IFCHR)

struct bufarea {
	struct bufarea	*b_next;		/* must be first */
	daddr_t	b_bno;
	int	b_size;
	union {
		char	b_buf[MAXBSIZE];	/* buffer space */
		short	b_lnks[SPERB];		/* link counts */
		daddr_t	b_indir[MAXNINDIR];	/* indirect block */
		struct	fs b_fs;		/* super block */
		struct	cg b_cg;		/* cylinder group */
		struct dinode b_dinode[MAXINOPB]; /* inode block */
	} b_un;
	char	b_dirty;
};

typedef struct bufarea BUFAREA;

BUFAREA	inoblk;			/* inode blocks */
BUFAREA	fileblk;		/* other blks in filesys */
BUFAREA	sblk;			/* file system superblock */
BUFAREA	cgblk;			/* cylinder group blocks */

#define	initbarea(x)	(x)->b_dirty = 0;(x)->b_bno = (daddr_t)-1
#define	dirty(x)	(x)->b_dirty = 1
#define	inodirty()	inoblk.b_dirty = 1
#define	sbdirty()	sblk.b_dirty = 1
#define	cgdirty()	cgblk.b_dirty = 1

#define	dirblk		fileblk.b_un
#define	sblock		sblk.b_un.b_fs
#define	cgrp		cgblk.b_un.b_cg

struct filecntl {
	int	rfdes;
	int	wfdes;
	int	mod;
} dfile;			/* file descriptors for filesys */

struct inodesc {
	char id_type;		/* type of descriptor, DATA or ADDR */
	int (*id_func)();	/* function to be applied to blocks of inode */
	ino_t id_number;	/* inode number described */
	ino_t id_parent;	/* for DATA nodes, their parent */
	daddr_t id_blkno;	/* current block number being examined */
	int id_numfrags;	/* number of frags contained in block */
	long id_filesize;	/* for DATA nodes, the size of the directory */
	int id_loc;		/* for DATA nodes, current location in dir */
	int id_entryno;		/* for DATA nodes, current entry number */
	DIRECT *id_dirp;	/* for data nodes, ptr to current entry */
	enum {DONTKNOW, NOFIX, FIX} id_fix; /* policy on fixing errors */
};
/* file types */
#define	DATA	1
#define	ADDR	2


daddr_t	duplist[DUPTBLSIZE];	/* dup block table */
daddr_t	*enddup;		/* next entry in dup table */
daddr_t	*muldup;		/* multiple dups part of table */

ino_t	badlncnt[MAXLNCNT];	/* table of inos with zero link cnts */
ino_t	*badlnp;		/* next entry in table */

char	rawflg;
char	*devname;
char	nflag;			/* assume a no response */
char	yflag;			/* assume a yes response */
int	bflag;			/* location of alternate super block */
int	debug;			/* output debugging info */
char	preen;			/* just fix normal inconsistencies */
char	rplyflag;		/* any questions asked? */
char	hotroot;		/* checking root device */
char	fixcg;			/* corrupted free list bit maps */

char	*blockmap;		/* ptr to primary blk allocation map */
char	*freemap;		/* ptr to secondary blk allocation map */
char	*statemap;		/* ptr to inode state table */
short	*lncntp;		/* ptr to link count table */

char	*srchname;		/* name being searched for in dir */
char	pathname[BUFSIZ];	/* current pathname */
char	*pathp;			/* pointer to pathname position */
char	*endpathname;

char	*lfname;

ino_t	imax;			/* number of inodes */
ino_t	lastino;		/* hiwater mark of inodes */
ino_t	lfdir;			/* lost & found directory */

off_t	maxblk;			/* largest logical blk in file */
off_t	bmapsz;			/* num chars in blockmap */

daddr_t	n_ffree;		/* number of small free blocks */
daddr_t	n_bfree;		/* number of large free blocks */
daddr_t	n_blks;			/* number of blocks used */
daddr_t	n_files;		/* number of files seen */
daddr_t	n_index;
daddr_t	n_bad;
daddr_t	fmax;			/* number of blocks in the volume */

daddr_t	badblk;
daddr_t	dupblk;

int	inosumbad;
int	offsumbad;
int	frsumbad;
int	sbsumbad;

#define	zapino(x)	(*(x) = zino)
struct	dinode zino;

#define	setbmap(x)	setbit(blockmap, x)
#define	getbmap(x)	isset(blockmap, x)
#define	clrbmap(x)	clrbit(blockmap, x)

#define	setfmap(x)	setbit(freemap, x)
#define	getfmap(x)	isset(freemap, x)
#define	clrfmap(x)	clrbit(freemap, x)

#define	ALTERED	010
#define	KEEPON	04
#define	SKIP	02
#define	STOP	01

time_t	time();
DINODE	*ginode();
BUFAREA	*getblk();
int	findino();