284 lines
10 KiB
C
284 lines
10 KiB
C
/* $OpenBSD: fsck.h,v 1.35 2024/02/03 18:51:57 beck Exp $ */
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/* $NetBSD: fsck.h,v 1.13 1996/10/11 20:15:46 thorpej Exp $ */
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/*
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Marshall
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* Kirk McKusick and Network Associates Laboratories, the Security
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* Research Division of Network Associates, Inc. under DARPA/SPAWAR
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* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
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* research program.
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*
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* Copyright (c) 1980, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)fsck.h 8.1 (Berkeley) 6/5/93
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*/
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#define MAXDUP 10 /* limit on dup blks (per inode) */
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#define MAXBAD 10 /* limit on bad blks (per inode) */
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#define MAXBUFSPACE 40*1024 /* maximum space to allocate to buffers */
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#define INOBUFSIZE 56*1024 /* size of buffer to read inodes in pass1 */
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union dinode {
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struct ufs1_dinode dp1;
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struct ufs2_dinode dp2;
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};
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#define DIP(dp, field) \
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((sblock.fs_magic == FS_UFS1_MAGIC) ? \
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(dp)->dp1.field : (dp)->dp2.field)
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#define DIP_SET(dp, field, val) do { \
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if (sblock.fs_magic == FS_UFS1_MAGIC) \
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(dp)->dp1.field = (val); \
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else \
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(dp)->dp2.field = (val); \
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} while (0)
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/*
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* Each inode on the file system is described by the following structure.
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* The linkcnt is initially set to the value in the inode. Each time it
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* is found during the descent in passes 2, 3, and 4 the count is
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* decremented. Any inodes whose count is non-zero after pass 4 needs to
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* have its link count adjusted by the value remaining in ino_linkcnt.
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*/
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struct inostat {
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char ino_state; /* state of inode, see below */
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char ino_type; /* type of inode */
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short ino_linkcnt; /* number of links not found */
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};
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#define USTATE 01 /* inode not allocated */
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#define FSTATE 02 /* inode is file */
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#define DSTATE 03 /* inode is directory */
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#define DFOUND 04 /* directory found during descent */
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#define DCLEAR 05 /* directory is to be cleared */
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#define FCLEAR 06 /* file is to be cleared */
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/*
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* Inode state information is contained on per cylinder group lists
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* which are described by the following structure.
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*/
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extern struct inostatlist {
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long il_numalloced; /* number of inodes allocated in this cg */
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struct inostat *il_stat;/* inostat info for this cylinder group */
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} *inostathead;
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#define GET_ISTATE(ino) (inoinfo(ino)->ino_state)
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#define GET_ITYPE(ino) (inoinfo(ino)->ino_type)
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#define SET_ISTATE(ino, v) do { GET_ISTATE(ino) = (v); } while (0)
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#define SET_ITYPE(ino, v) do { GET_ITYPE(ino) = (v); } while (0)
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#define ILNCOUNT(ino) (inoinfo(ino)->ino_linkcnt)
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/*
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* buffer cache structure.
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*/
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struct bufarea {
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daddr_t b_bno;
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struct bufarea *b_next; /* free list queue */
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struct bufarea *b_prev; /* free list queue */
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int b_size;
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int b_errs;
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int b_flags;
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union {
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char *b_buf; /* buffer space */
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int32_t *b_indir1; /* FFS1 indirect block */
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int64_t *b_indir2; /* FFS2 indirect block */
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struct fs *b_fs; /* super block */
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struct cg *b_cg; /* cylinder group */
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struct ufs1_dinode *b_dinode1; /* FFS1 inode block */
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struct ufs2_dinode *b_dinode2; /* FFS2 inode block */
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} b_un;
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char b_dirty;
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};
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#define IBLK(bp, i) \
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((sblock.fs_magic == FS_UFS1_MAGIC) ? \
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(bp)->b_un.b_indir1[i] : (bp)->b_un.b_indir2[i])
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#define IBLK_SET(bp, i, val) do { \
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if (sblock.fs_magic == FS_UFS1_MAGIC) \
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(bp)->b_un.b_indir1[i] = (val); \
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else \
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(bp)->b_un.b_indir2[i] = (val); \
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} while (0)
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#define B_INUSE 1
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#define MINBUFS 5 /* minimum number of buffers required */
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extern struct bufarea bufhead; /* head of list of other blks in filesys */
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extern struct bufarea sblk; /* file system superblock */
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extern struct bufarea asblk; /* alternate file system superblock */
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extern struct bufarea *pdirbp; /* current directory contents */
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extern struct bufarea *pbp; /* current inode block */
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extern struct bufarea *getdatablk(daddr_t, long);
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#define dirty(bp) (bp)->b_dirty = 1
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#define initbarea(bp) \
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(bp)->b_dirty = 0; \
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(bp)->b_bno = -1; \
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(bp)->b_flags = 0;
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#define sbdirty() sblk.b_dirty = 1
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#define sblock (*sblk.b_un.b_fs)
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enum fixstate {DONTKNOW, NOFIX, FIX, IGNORE};
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struct inodesc {
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daddr_t id_blkno; /* current block number being examined */
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quad_t id_filesize; /* for DATA nodes, the size of the directory */
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u_int64_t id_entryno; /* for DATA nodes, current entry number */
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ino_t id_number; /* inode number described */
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ino_t id_parent; /* for DATA nodes, their parent */
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int (*id_func) /* function to be applied to blocks of inode */
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(struct inodesc *);
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struct direct *id_dirp; /* for DATA nodes, ptr to current entry */
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char *id_name; /* for DATA nodes, name to find or enter */
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int id_numfrags; /* number of frags contained in block */
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int id_loc; /* for DATA nodes, current location in dir */
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enum fixstate id_fix; /* policy on fixing errors */
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char id_type; /* type of descriptor, DATA or ADDR */
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};
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/* file types */
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#define DATA 1
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#define ADDR 2
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/*
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* Linked list of duplicate blocks.
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*
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* The list is composed of two parts. The first part of the
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* list (from duplist through the node pointed to by muldup)
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* contains a single copy of each duplicate block that has been
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* found. The second part of the list (from muldup to the end)
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* contains duplicate blocks that have been found more than once.
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* To check if a block has been found as a duplicate it is only
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* necessary to search from duplist through muldup. To find the
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* total number of times that a block has been found as a duplicate
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* the entire list must be searched for occurrences of the block
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* in question. The following diagram shows a sample list where
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* w (found twice), x (found once), y (found three times), and z
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* (found once) are duplicate block numbers:
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*
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* w -> y -> x -> z -> y -> w -> y
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* ^ ^
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* | |
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* duplist muldup
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*/
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struct dups {
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struct dups *next;
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daddr_t dup;
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};
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extern struct dups *duplist; /* head of dup list */
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extern struct dups *muldup; /* end of unique duplicate dup block numbers */
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/*
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* Linked list of inodes with zero link counts.
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*/
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struct zlncnt {
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struct zlncnt *next;
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ino_t zlncnt;
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};
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extern struct zlncnt *zlnhead; /* head of zero link count list */
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/*
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* Inode cache data structures.
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*/
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extern struct inoinfo {
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struct inoinfo *i_nexthash; /* next entry in hash chain */
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struct inoinfo *i_child, *i_sibling;
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size_t i_isize; /* size of inode */
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ino_t i_number; /* inode number of this entry */
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ino_t i_parent; /* inode number of parent */
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ino_t i_dotdot; /* inode number of `..' */
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u_int i_numblks; /* size of block array in bytes */
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daddr_t i_blks[1]; /* actually longer */
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} **inphead, **inpsort;
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extern long numdirs, listmax, inplast;
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extern long secsize; /* actual disk sector size */
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extern char nflag; /* assume a no response */
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extern char yflag; /* assume a yes response */
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extern daddr_t bflag; /* location of alternate super block */
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extern int debug; /* output debugging info */
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extern int cvtlevel; /* convert to newer file system format */
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extern int preen; /* just fix normal inconsistencies */
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extern char resolved; /* cleared if unresolved changes => not clean */
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extern char havesb; /* superblock has been read */
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extern char skipclean; /* skip clean file systems if preening */
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extern int fsmodified; /* 1 => write done to file system */
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extern int fsreadfd; /* file descriptor for reading file system */
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extern int fswritefd; /* file descriptor for writing file system */
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extern int rerun; /* rerun fsck. Only used in non-preen mode */
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extern daddr_t maxfsblock; /* number of blocks in the file system */
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extern char *blockmap; /* ptr to primary blk allocation map */
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extern ino_t maxino; /* number of inodes in file system */
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extern ino_t lastino; /* last inode in use */
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extern ino_t lfdir; /* lost & found directory inode number */
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extern char *lfname; /* lost & found directory name */
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extern int lfmode; /* lost & found directory creation mode */
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extern daddr_t n_blks; /* number of blocks in use */
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extern int64_t n_files; /* number of files in use */
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#define clearinode(dp) \
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if (sblock.fs_magic == FS_UFS1_MAGIC) { \
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(dp)->dp1 = ufs1_zino; \
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} else { \
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(dp)->dp2 = ufs2_zino; \
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}
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extern struct ufs1_dinode ufs1_zino;
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extern struct ufs2_dinode ufs2_zino;
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#define setbmap(blkno) setbit(blockmap, blkno)
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#define testbmap(blkno) isset(blockmap, blkno)
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#define clrbmap(blkno) clrbit(blockmap, blkno)
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#define STOP 0x01
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#define SKIP 0x02
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#define KEEPON 0x04
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#define ALTERED 0x08
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#define FOUND 0x10
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union dinode *ginode(ino_t);
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struct bufarea *cglookup(u_int cg);
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struct inoinfo *getinoinfo(ino_t);
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void getblk(struct bufarea *, daddr_t, long);
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ino_t allocino(ino_t, int);
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void *Malloc(size_t);
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void *Calloc(size_t, size_t);
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void *Reallocarray(void *, size_t, size_t);
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extern int (*info_fn)(char *, size_t);
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extern char *info_filesys;
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