fsck.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Copyright (c) 1980, 1986, 1990 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement: ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
/*
* Copyright 2003 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _FSCK_FSCK_H
#define _FSCK_FSCK_H
#pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3 */
#ifdef __cplusplus
extern "C" {
#endif
#define MAXDUP 10 /* limit on dup blks (per inode) */
#define MAXBAD 10 /* limit on bad blks (per inode) */
#define MaxCPG 100000 /* sanity limit on # of cylinders / group */
#define MAXBUFSPACE 40*1024 /* maximum space to allocate to buffers */
#define INOBUFSIZE 56*1024 /* size of buffer to read inodes in pass1 */
#ifndef BUFSIZ
#define BUFSIZ 1024
#endif
#define USTATE 01 /* inode not allocated */
#define FSTATE 02 /* inode is file */
#define DSTATE 03 /* inode is directory */
#define DFOUND 04 /* directory found during descent */
#define DCLEAR 05 /* directory is to be cleared */
#define FCLEAR 06 /* file is to be cleared */
#define SSTATE 07 /* inode is a shadow */
#define SCLEAR 10 /* shadow is to be cleared */
/*
* buffer cache structure.
*/
struct bufarea {
struct bufarea *b_next; /* free list queue */
struct bufarea *b_prev; /* free list queue */
diskaddr_t b_bno;
int b_size;
int b_errs;
int b_flags;
int b_cnt; /* reference cnt */
union {
char *b_buf; /* buffer space */
daddr32_t *b_indir; /* indirect block */
struct fs *b_fs; /* super block */
struct cg *b_cg; /* cylinder group */
struct dinode *b_dinode; /* inode block */
} b_un;
char b_dirty;
};
#define B_INUSE 1
#define MINBUFS 5 /* minimum number of buffers required */
struct bufarea bufhead; /* head of list of other blks in filesys */
struct bufarea sblk; /* file system superblock */
struct bufarea cgblk; /* cylinder group blocks */
struct bufarea *pbp; /* pointer to inode data in buffer pool */
struct bufarea *pdirbp; /* pointer to directory data in buffer pool */
struct bufarea *getdatablk(daddr32_t, int);
#define dirty(bp) (bp)->b_dirty = isdirty = 1
#define initbarea(bp) \
(bp)->b_dirty = 0; \
(bp)->b_bno = -1LL; \
(bp)->b_flags = 0; \
(bp)->b_cnt = 0;
#define sbdirty() sblk.b_dirty = isdirty = 1
#define cgdirty() cgblk.b_dirty = isdirty = 1
#define sblock (*sblk.b_un.b_fs)
#define cgrp (*cgblk.b_un.b_cg)
enum fixstate {DONTKNOW, NOFIX, FIX};
struct inodesc {
enum fixstate id_fix; /* policy on fixing errors */
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 */
ino_t id_client; /* base file for attribute */
daddr32_t id_blkno; /* current block number being examined */
int id_numfrags; /* number of frags contained in block */
offset_t id_filesize; /* for DATA nodes, the size of the directory */
uint_t id_loc; /* for DATA nodes, current location in dir */
uint_t id_entryno; /* for DATA nodes, current entry number */
int id_hasholes; /* for DATA inode, 1 == dir has holes */
int id_llbna; /* for DATA nodes, last logical block alloc'd */
struct direct *id_dirp; /* for DATA nodes, ptr to current entry */
char *id_name; /* for DATA nodes, name to find or enter */
char id_type; /* type of descriptor, DATA or ADDR */
};
/* file types */
#define DATA 1
#define ADDR 2
#define ACL 3
/*
* Linked list of duplicate blocks.
*
* The list is composed of two parts. The first part of the
* list (from duplist through the node pointed to by muldup)
* contains a single copy of each duplicate block that has been
* found. The second part of the list (from muldup to the end)
* contains duplicate blocks that have been found more than once.
* To check if a block has been found as a duplicate it is only
* necessary to search from duplist through muldup. To find the
* total number of times that a block has been found as a duplicate
* the entire list must be searched for occurences of the block
* in question. The following diagram shows a sample list where
* w (found twice), x (found once), y (found three times), and z
* (found once) are duplicate block numbers:
*
* w -> y -> x -> z -> y -> w -> y
* ^ ^
* | |
* duplist muldup
*/
struct dups {
struct dups *next;
daddr32_t dup;
};
struct dups *duplist; /* head of dup list */
struct dups *muldup; /* end of unique duplicate dup block numbers */
/*
* Linked list of inodes with zero link counts.
*/
struct zlncnt {
struct zlncnt *next;
ino_t zlncnt;
};
struct zlncnt *zlnhead; /* head of zero link count list */
/*
* Inode cache data structures.
*/
struct inoinfo {
struct inoinfo *i_nexthash; /* next entry in hash chain */
ino_t i_number; /* inode number of this entry */
ino_t i_parent; /* inode number of parent */
ino_t i_dotdot; /* inode number of `..' */
ino_t i_extattr; /* inode of hidden attr dir */
offset_t i_isize; /* size of inode */
uint_t i_numblks; /* size of block array in bytes */
daddr32_t i_blks[1]; /* actually longer */
} **inphead, **inpsort;
int64_t numdirs, listmax, inplast;
/*
* Acl cache data structures.
*/
struct aclinfo {
struct aclinfo *i_nexthash; /* next entry in hash chain */
ino_t i_number; /* inode number of this entry */
offset_t i_isize; /* size of inode */
uint_t i_numblks; /* size of block array in bytes */
daddr32_t i_blks[1]; /* actually longer */
} **aclphead, **aclpsort;
int64_t numacls, aclmax, aclplast;
/*
* shadowclients and shadowclientinfo are structures for keeping track of
* shadow inodes that exist, and which regular inodes use them (i.e. are
* their clients).
*/
struct shadowclients {
ino_t *client; /* an array of inode numbers */
int nclients; /* how many inodes in the array are in use (valid) */
struct shadowclients *next; /* link to more client inode numbers */
};
struct shadowclientinfo {
ino_t shadow; /* the shadow inode that this info is for */
int totalClients; /* how many inodes total refer to this */
struct shadowclients *clients; /* a linked list of wads of clients */
struct shadowclientinfo *next; /* link to the next shadow inode */
};
/* global pointer to this shadow/client information */
extern struct shadowclientinfo *shadowclientinfo;
extern struct shadowclientinfo *attrclientinfo;
/* granularity -- how many client inodes do we make space for at a time */
/* initialized in setup.c; changable with adb should anyone ever have a need */
extern int maxshadowclients;
void registershadowclients(ino_t, ino_t, struct shadowclientinfo **);
char *devname; /* name of device being checked */
int dev_bsize; /* computed value of DEV_BSIZE */
int secsize; /* actual disk sector size */
char nflag; /* assume a no response */
char yflag; /* assume a yes response */
int bflag; /* location of alternate super block */
int debug; /* output debugging info */
int rflag; /* check raw file systems */
int wflag; /* check only writable filesystems */
int fflag; /* check regardless of clean flag (force) */
int cvtflag; /* convert to old file system format */
char preen; /* just fix normal inconsistencies */
char mountedfs; /* checking mounted device */
int exitstat; /* exit status (set to 8 if 'No' response) */
char hotroot; /* checking root device */
char havesb; /* superblock has been read */
int fsmodified; /* 1 => write done to file system */
int fsreadfd; /* file descriptor for reading file system */
int fswritefd; /* file descriptor for writing file system */
int iscorrupt; /* known to be corrupt/inconsistent */
int isdirty; /* 1 => write pending to file system */
int isconvert; /* converting */
int dirholes; /* Found dirs with holes in indirect blks */
int islog; /* logging file system */
int islogok; /* log is okay */
int ismdd; /* metadevice */
int isreclaim; /* reclaiming is set in the superblock */
int willreclaim; /* reclaim thread will run at mount */
int errorlocked; /* set => mounted fs has been error-locked */
/* implies fflag "force check flag" */
char *elock_combuf; /* error lock comment buffer */
char *elock_mountp; /* mount point; used to unlock error-lock */
int pid; /* fsck's process id (put in lockfs comment) */
int needs_reclaim; /* files were deleted, hence reclaim needed */
int mountfd; /* fd of mount point */
struct lockfs *lfp; /* current lockfs status */
daddr32_t maxfsblock; /* number of blocks in the file system */
char *blockmap; /* ptr to primary blk allocation map */
ino_t maxino; /* number of inodes in file system */
ino_t lastino; /* last inode in use */
char *statemap; /* ptr to inode state table */
short *lncntp; /* ptr to link count table */
ino_t lfdir; /* lost & found directory inode number */
char *lfname; /* lost & found directory name */
int lfmode; /* lost & found directory creation mode */
char *aclbuf; /* hold acl's for parsing */
int64_t aclbufoff; /* offset into aclbuf */
daddr32_t n_blks; /* number of blocks in use */
daddr32_t n_files; /* number of files in use */
#define clearinode(dp) (*(dp) = zino), (needs_reclaim = errorlocked)
struct dinode zino;
#define setbmap(blkno) setbit(blockmap, blkno)
#define testbmap(blkno) isset(blockmap, blkno)
#define clrbmap(blkno) clrbit(blockmap, blkno)
#define STOP 0x01
#define SKIP 0x02
#define KEEPON 0x04
#define ALTERED 0x08
#define FOUND 0x10
time_t time();
struct dinode *ginode(ino_t);
struct inoinfo *getinoinfo(ino_t);
struct bufarea *getblk(struct bufarea *, daddr32_t, int);
ino_t allocino(ino_t, int);
int findino(struct inodesc *);
char *setup(char *);
struct bufarea *getdirblk(daddr32_t blkno, int size);
struct bufarea *getdatablk(daddr32_t blkno, int size);
daddr32_t allocblk(int frags);
extern int bread(int, char *, diskaddr_t, long);
extern int bwrite(int, char *, diskaddr_t, long);
extern int reply(char *);
extern int errexit();
extern int pfatal();
extern int pwarn();
extern int mounted(char *);
extern int do_errorlock(int);
extern int printclean(void);
extern int bufinit(void);
extern int ckfini(void);
#ifdef __cplusplus
}
#endif
#endif /* _FSCK_FSCK_H */