/* * Copyright (c) 1980, 1986, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fsck.h 8.4 (Berkeley) 5/9/95 * $FreeBSD: src/sbin/fsck/fsck.h,v 1.12.2.1 2001/01/23 23:11:07 iedowse Exp $ */ #include #include #include #define MAXDUP 10 /* limit on dup blks (per inode) */ #define MAXBAD 10 /* limit on bad blks (per inode) */ #define MAXBUFSPACE 40*1024 /* maximum space to allocate to buffers */ #define INOBUFSIZE 56*1024 /* size of buffer to read inodes in pass1 */ /* * Each inode on the filesystem is described by the following structure. * The linkcnt is initially set to the value in the inode. Each time it * is found during the descent in passes 2, 3, and 4 the count is * decremented. Any inodes whose count is non-zero after pass 4 needs to * have its link count adjusted by the value remaining in ino_linkcnt. */ struct inostat { char ino_state; /* state of inode, see below */ char ino_type; /* type of inode */ short ino_linkcnt; /* number of links not found */ }; /* * Inode states. */ #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 */ /* * Inode state information is contained on per cylinder group lists * which are described by the following structure. */ extern struct inostatlist { long il_numalloced; /* number of inodes allocated in this cg */ struct inostat *il_stat;/* inostat info for this cylinder group */ } *inostathead; /* * buffer cache structure. */ struct bufarea { struct bufarea *b_next; /* free list queue */ struct bufarea *b_prev; /* free list queue */ ufs_daddr_t b_bno; int b_size; int b_errs; int b_flags; union { char *b_buf; /* buffer space */ ufs_daddr_t *b_indir; /* indirect block */ struct fs *b_fs; /* super block */ struct cg *b_cg; /* cylinder group */ struct ufs1_dinode *b_dinode; /* inode block */ } b_un; char b_dirty; }; #define B_INUSE 1 #define MINBUFS 5 /* minimum number of buffers required */ extern struct bufarea bufhead; /* head of list of other blks in filesys */ extern struct bufarea sblk; /* file system superblock */ extern struct bufarea cgblk; /* cylinder group blocks */ extern struct bufarea *pdirbp; /* current directory contents */ extern struct bufarea *pbp; /* current inode block */ #define dirty(bp) (bp)->b_dirty = 1 #define initbarea(bp) \ (bp)->b_dirty = 0; \ (bp)->b_bno = (ufs_daddr_t)-1; \ (bp)->b_flags = 0; #define sbdirty() sblk.b_dirty = 1 #define cgdirty() cgblk.b_dirty = 1 #define sblock (*sblk.b_un.b_fs) #define cgrp (*cgblk.b_un.b_cg) enum fixstate {DONTKNOW, NOFIX, FIX, IGNORE}; struct inodesc { enum fixstate id_fix; /* policy on fixing errors */ int (*id_func)(struct inodesc *); /* function to be applied to blocks of inode */ ufs1_ino_t id_number; /* inode number described */ ufs1_ino_t id_parent; /* for DATA nodes, their parent */ ufs_daddr_t id_blkno; /* current block number being examined */ int id_numfrags; /* number of frags contained in block */ quad_t 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 */ 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 /* * 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; ufs_daddr_t dup; }; extern struct dups *duplist; /* head of dup list */ extern struct dups *muldup; /* end of unique duplicate dup block numbers */ /* * Linked list of inodes with zero link counts. */ struct zlncnt { struct zlncnt *next; ufs1_ino_t zlncnt; }; extern struct zlncnt *zlnhead; /* head of zero link count list */ /* * Inode cache data structures. */ struct inoinfo { struct inoinfo *i_nexthash; /* next entry in hash chain */ ufs1_ino_t i_number; /* inode number of this entry */ ufs1_ino_t i_parent; /* inode number of parent */ ufs1_ino_t i_dotdot; /* inode number of `..' */ size_t i_isize; /* size of inode */ u_int i_numblks; /* size of block array in bytes */ ufs_daddr_t i_blks[1]; /* actually longer */ }; extern struct inoinfo **inphead, **inpsort; extern long numdirs, dirhash, listmax, inplast, dirhashmask; extern long countdirs; /* number of directories we actually found */ /* * Be careful about cache locality of reference, large filesystems may * have tens of millions of directories in them and if fsck has to swap * we want it to swap efficiently. For this reason we try to group * adjacent inodes together by a reasonable factor. */ #define DIRHASH(ino) ((ino >> 3) & dirhashmask) extern char *cdevname; /* name of device being checked */ extern long dev_bsize; /* computed value of DEV_BSIZE */ extern long secsize; /* actual disk sector size */ extern char fflag; /* force check, ignore clean flag */ extern char nflag; /* assume a no response */ extern char yflag; /* assume a yes response */ extern int bflag; /* location of alternate super block */ extern int debug; /* output debugging info */ extern int cvtlevel; /* convert to newer file system format */ extern int doinglevel1; /* converting to new cylinder group format */ extern int doinglevel2; /* converting to new inode format */ extern int newinofmt; /* filesystem has new inode format */ extern char usedsoftdep; /* just fix soft dependency inconsistencies */ extern char preen; /* just fix normal inconsistencies */ extern char rerun; /* rerun fsck. Only used in non-preen mode */ extern int returntosingle; /* 1 => return to single user mode on exit */ extern char resolved; /* cleared if unresolved changes => not clean */ extern char havesb; /* superblock has been read */ extern int fsmodified; /* 1 => write done to file system */ extern int fsreadfd; /* file descriptor for reading file system */ extern int fswritefd; /* file descriptor for writing file system */ extern int lastmntonly; /* Output the last mounted on only */ extern ufs_daddr_t maxfsblock; /* number of blocks in the file system */ extern char *blockmap; /* ptr to primary blk allocation map */ extern ufs1_ino_t maxino; /* number of inodes in file system */ extern ufs1_ino_t lfdir; /* lost & found directory inode number */ extern char *lfname; /* lost & found directory name */ extern int lfmode; /* lost & found directory creation mode */ extern ufs_daddr_t n_blks; /* number of blocks in use */ extern ufs_daddr_t n_files; /* number of files in use */ extern int got_siginfo; /* received a SIGINFO */ #define clearinode(dp) (*(dp) = zino) extern struct ufs1_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 #define EEXIT 8 /* Standard error exit. */ struct fstab; extern void adjust(struct inodesc *, int); extern ufs_daddr_t allocblk(long); extern ufs1_ino_t allocdir(ufs1_ino_t, ufs1_ino_t, int); extern ufs1_ino_t allocino(ufs1_ino_t, int); extern void blkerror(ufs1_ino_t, char *, ufs_daddr_t); extern char *blockcheck(char *); extern int bread(int, char *, ufs_daddr_t, long); extern void bufinit(void); extern void bwrite(int, char *, ufs_daddr_t, long); extern void cacheino(struct ufs1_dinode *, ufs1_ino_t); extern void catch(int) __dead2; extern void catchquit(int); extern int changeino(ufs1_ino_t, char *, ufs1_ino_t); extern int checkfstab(int, int, int (*)(struct fstab *), int (*)(char *, char *, long, int)); extern int chkrange(ufs_daddr_t, int); extern void ckfini(int); extern int ckinode(struct ufs1_dinode *, struct inodesc *); extern void clri(struct inodesc *, char *, int); extern int clearentry(struct inodesc *); extern void direrror(ufs1_ino_t, char *); extern int dirscan(struct inodesc *); extern int dofix(struct inodesc *, char *); extern void ffs_clrblock(struct fs *, u_char *, ufs_daddr_t); extern void ffs_fragacct(struct fs *, int, int32_t [], int); extern int ffs_isblock(struct fs *, u_char *, ufs_daddr_t); extern void ffs_setblock(struct fs *, u_char *, ufs_daddr_t); extern void fileerror(ufs1_ino_t, ufs1_ino_t, char *); extern int findino(struct inodesc *); extern int findname(struct inodesc *); extern void flush(int, struct bufarea *); extern void freeblk(ufs_daddr_t, long); extern void freeino(ufs1_ino_t); extern void freeinodebuf(void); extern int ftypeok(struct ufs1_dinode *); extern void getblk(struct bufarea *, ufs_daddr_t, long); extern struct bufarea *getdatablk(ufs_daddr_t, long); extern struct inoinfo *getinoinfo(ufs1_ino_t); extern struct ufs1_dinode *getnextinode(ufs1_ino_t); extern void getpathname(char *, ufs1_ino_t, ufs1_ino_t); extern struct ufs1_dinode *ginode(ufs1_ino_t); extern void infohandler(int); extern void inocleanup(void); extern void inodirty(void); extern struct inostat *inoinfo(ufs1_ino_t); extern int linkup(ufs1_ino_t, ufs1_ino_t, char *); extern int makeentry(ufs1_ino_t, ufs1_ino_t, char *); extern void panic(const char *, ...) __dead2 __printflike(1, 2); extern void pass1(void); extern void pass1b(void); extern int pass1check(struct inodesc *); extern void pass2(void); extern void pass3(void); extern void pass4(void); extern int pass4check(struct inodesc *); extern void pass5(void); extern void pfatal(const char *, ...) __printflike(1, 2); extern void pinode(ufs1_ino_t); extern void propagate(void); extern void pwarn(const char *, ...) __printflike(1, 2); extern int reply(char *); extern void setinodebuf(ufs1_ino_t); extern int setup(char *); extern void voidquit(int);