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- /*
- * Copyright (c) 1980, 1986 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 5.17 (Berkeley) 7/27/90
- */
-
- #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 */
- 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 */
- 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 *devname; /* name of device being checked */
- long dev_bsize; /* computed value of DEV_BSIZE */
- long 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 cvtflag; /* convert to old file system 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 */
-
- 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 */
- 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
-
- time_t time();
- struct dinode *ginode();
- struct inoinfo *getinoinfo();
- void getblk();
- ino_t allocino();
- int findino();
-