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Diffstat (limited to 'sbin/fsck_ffs/fsck.h')
| -rw-r--r-- | sbin/fsck_ffs/fsck.h | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/sbin/fsck_ffs/fsck.h b/sbin/fsck_ffs/fsck.h new file mode 100644 index 0000000..57cb17a --- /dev/null +++ b/sbin/fsck_ffs/fsck.h @@ -0,0 +1,293 @@ +/* + * 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. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 8.1 (Berkeley) 6/5/93 + */ + +#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 */ + +#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 */ + +/* + * buffer cache structure. + */ +struct bufarea { + struct bufarea *b_next; /* free list queue */ + struct bufarea *b_prev; /* free list queue */ + daddr_t b_bno; + int b_size; + int b_errs; + int b_flags; + union { + char *b_buf; /* buffer space */ + daddr_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 *pdirbp; /* current directory contents */ +struct bufarea *pbp; /* current inode block */ +struct bufarea *getdatablk(); + +#define dirty(bp) (bp)->b_dirty = 1 +#define initbarea(bp) \ + (bp)->b_dirty = 0; \ + (bp)->b_bno = (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)(); /* 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 */ + 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; + daddr_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 `..' */ + size_t i_isize; /* size of inode */ + u_int i_numblks; /* size of block array in bytes */ + daddr_t i_blks[1]; /* actually longer */ +} **inphead, **inpsort; +long numdirs, listmax, inplast; + +char *cdevname; /* name of device being checked */ +long dev_bsize; /* computed value of DEV_BSIZE */ +long secsize; /* actual disk sector size */ +char fflag; /* force fs check (ignore clean flag) */ +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 cvtlevel; /* convert to newer file system format */ +int doinglevel1; /* converting to new cylinder group format */ +int doinglevel2; /* converting to new inode format */ +int newinofmt; /* filesystem has new inode format */ +char preen; /* just fix normal inconsistencies */ +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 returntosingle; /* return to single user mode */ +int rerun; /* rerun fsck. Only used in non-preen mode */ + +daddr_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 */ +unsigned char *typemap; /* ptr to inode type 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 */ + +daddr_t n_blks; /* number of blocks in use */ +daddr_t n_files; /* number of files in use */ + +#define clearinode(dp) (*(dp) = zino) +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 + +/* dir.c */ +void adjust __P((struct inodesc *idesc, short lcnt)); +ino_t allocdir __P((ino_t parent, ino_t request, int mode)); +int changeino __P((ino_t dir, char *name, ino_t newnum)); +void direrror __P((ino_t ino, char *errmesg)); +int dirscan __P((struct inodesc *idesc)); +void fileerror __P((ino_t cwd, ino_t ino, char *errmesg)); +int linkup __P((ino_t orphan, ino_t parentdir)); +int makeentry __P((ino_t parent, ino_t ino, char *name)); +void propagate __P((void)); + +/* ffs_subr.c */ +void ffs_fragacct __P((struct fs *fs, int fragmap, long *fraglist, int cnt)); + +/* inode.c */ +ino_t allocino __P((ino_t request, int type)); +void blkerror __P((ino_t ino, char *type, daddr_t blk)); +void cacheino __P((struct dinode *dp, ino_t inumber)); +int chkrange __P((daddr_t blk, int cnt)); +int ckinode __P((struct dinode *dp, struct inodesc *idesc)); +void clri __P((struct inodesc *idesc, char *type, int flag)); +int findino __P((struct inodesc *idesc)); +void freeino __P((ino_t ino)); +void freeinodebuf __P((void)); +struct dinode * ginode __P((ino_t inumber)); +struct inoinfo * getinoinfo __P((ino_t inumber)); +struct dinode * getnextinode __P((ino_t inumber)); +void inodirty __P((void)); +void inocleanup __P((void)); +void pinode __P((ino_t ino)); +void resetinodebuf __P((void)); +int findname __P((struct inodesc *idesc)); + +/* pass1.c */ +void pass1 __P((void)); +int pass1check __P((struct inodesc *idesc)); + +/* pass1b.c */ +void pass1b __P((void)); + +/* pass2.c */ +void pass2 __P((void)); + +/* pass3.c */ +void pass3 __P((void)); + +/* pass4.c */ +void pass4 __P((void)); +int pass4check __P((struct inodesc *idesc)); + +/* pass5.c */ +void pass5 __P((void)); + +/* preen.c */ +char *blockcheck __P((char *name)); +int checkfstab __P((int preen, int maxrun,int (*docheck)(), int (*chkit)())); + +/* setup.c */ +int setup __P((char *dev)); + +/* utilities.c */ +int allocblk __P((long frags)); +int bread __P((int fd, char *buf, daddr_t blk, long size)); +void bufinit __P((void)); +void bwrite __P((int fd, char *buf, daddr_t blk, long size)); +void catch __P((int)); +void catchquit __P((int)); +void ckfini __P((void)); +int dofix __P((struct inodesc *idesc, char *msg)); +void errexit __P((const char *s1, ...)) __dead2; +void flush __P((int fd, struct bufarea *bp)); +void freeblk __P((daddr_t blkno, long frags)); +int ftypeok __P((struct dinode *dp)); +void getblk __P((struct bufarea *bp, daddr_t blk, long size)); +struct bufarea * getdatablk __P((daddr_t blkno, long size)); +void getpathname __P((char *namebuf, ino_t curdir, ino_t ino)); +void panic __P((const char *, ...)) __dead2; +void pfatal __P((const char *s1, ...)); +void pwarn __P((const char *s1, ...)); +int reply __P((char *question)); +void voidquit __P((int)); |
