2
* Copyright (c) 2002 Networks Associates Technology, Inc.
5
* This software was developed for the FreeBSD Project by Marshall
6
* Kirk McKusick and Network Associates Laboratories, the Security
7
* Research Division of Network Associates, Inc. under DARPA/SPAWAR
8
* contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS
11
* Redistribution and use in source and binary forms, with or without
12
* modification, are permitted provided that the following conditions
14
* 1. Redistributions of source code must retain the above copyright
15
* notice, this list of conditions and the following disclaimer.
16
* 2. Redistributions in binary form must reproduce the above copyright
17
* notice, this list of conditions and the following disclaimer in the
18
* documentation and/or other materials provided with the distribution.
20
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32
* Copyright (c) 1980, 1986, 1993
33
* The Regents of the University of California. All rights reserved.
35
* Redistribution and use in source and binary forms, with or without
36
* modification, are permitted provided that the following conditions
38
* 1. Redistributions of source code must retain the above copyright
39
* notice, this list of conditions and the following disclaimer.
40
* 2. Redistributions in binary form must reproduce the above copyright
41
* notice, this list of conditions and the following disclaimer in the
42
* documentation and/or other materials provided with the distribution.
43
* 4. Neither the name of the University nor the names of its contributors
44
* may be used to endorse or promote products derived from this software
45
* without specific prior written permission.
47
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
48
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
49
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
50
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
51
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
52
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
53
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
54
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
55
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
56
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59
* @(#)fsck.h 8.4 (Berkeley) 5/9/95
67
#define MAXDUP 10 /* limit on dup blks (per inode) */
68
#define MAXBAD 10 /* limit on bad blks (per inode) */
69
#define MAXBUFSPACE 40*1024 /* maximum space to allocate to buffers */
70
#define INOBUFSIZE 56*1024 /* size of buffer to read inodes in pass1 */
73
struct ufs1_dinode dp1;
74
struct ufs2_dinode dp2;
76
#define DIP(dp, field) \
77
((sblock.fs_magic == FS_UFS1_MAGIC) ? \
78
(dp)->dp1.field : (dp)->dp2.field)
80
#define DIP_SET(dp, field, val) do { \
81
if (sblock.fs_magic == FS_UFS1_MAGIC) \
82
(dp)->dp1.field = (val); \
84
(dp)->dp2.field = (val); \
88
* Each inode on the file system is described by the following structure.
89
* The linkcnt is initially set to the value in the inode. Each time it
90
* is found during the descent in passes 2, 3, and 4 the count is
91
* decremented. Any inodes whose count is non-zero after pass 4 needs to
92
* have its link count adjusted by the value remaining in ino_linkcnt.
95
char ino_state; /* state of inode, see below */
96
char ino_type; /* type of inode */
97
short ino_linkcnt; /* number of links not found */
102
#define USTATE 0x1 /* inode not allocated */
103
#define FSTATE 0x2 /* inode is file */
104
#define FZLINK 0x3 /* inode is file with a link count of zero */
105
#define DSTATE 0x4 /* inode is directory */
106
#define DZLINK 0x5 /* inode is directory with a zero link count */
107
#define DFOUND 0x6 /* directory found during descent */
108
/* 0x7 UNUSED - see S_IS_DVALID() definition */
109
#define DCLEAR 0x8 /* directory is to be cleared */
110
#define FCLEAR 0x9 /* file is to be cleared */
111
/* DUNFOUND === (state == DSTATE || state == DZLINK) */
112
#define S_IS_DUNFOUND(state) (((state) & ~0x1) == DSTATE)
113
/* DVALID === (state == DSTATE || state == DZLINK || state == DFOUND) */
114
#define S_IS_DVALID(state) (((state) & ~0x3) == DSTATE)
115
#define INO_IS_DUNFOUND(ino) S_IS_DUNFOUND(inoinfo(ino)->ino_state)
116
#define INO_IS_DVALID(ino) S_IS_DVALID(inoinfo(ino)->ino_state)
118
* Inode state information is contained on per cylinder group lists
119
* which are described by the following structure.
122
long il_numalloced; /* number of inodes allocated in this cg */
123
struct inostat *il_stat;/* inostat info for this cylinder group */
127
* buffer cache structure.
130
struct bufarea *b_next; /* free list queue */
131
struct bufarea *b_prev; /* free list queue */
137
char *b_buf; /* buffer space */
138
ufs1_daddr_t *b_indir1; /* UFS1 indirect block */
139
ufs2_daddr_t *b_indir2; /* UFS2 indirect block */
140
struct fs *b_fs; /* super block */
141
struct cg *b_cg; /* cylinder group */
142
struct ufs1_dinode *b_dinode1; /* UFS1 inode block */
143
struct ufs2_dinode *b_dinode2; /* UFS2 inode block */
148
#define IBLK(bp, i) \
149
((sblock.fs_magic == FS_UFS1_MAGIC) ? \
150
(bp)->b_un.b_indir1[i] : (bp)->b_un.b_indir2[i])
152
#define IBLK_SET(bp, i, val) do { \
153
if (sblock.fs_magic == FS_UFS1_MAGIC) \
154
(bp)->b_un.b_indir1[i] = (val); \
156
(bp)->b_un.b_indir2[i] = (val); \
161
#define MINBUFS 5 /* minimum number of buffers required */
162
struct bufarea bufhead; /* head of list of other blks in filesys */
163
struct bufarea sblk; /* file system superblock */
164
struct bufarea cgblk; /* cylinder group blocks */
165
struct bufarea *pdirbp; /* current directory contents */
166
struct bufarea *pbp; /* current inode block */
168
#define dirty(bp) do { \
170
pfatal("SETTING DIRTY FLAG IN READ_ONLY MODE\n"); \
174
#define initbarea(bp) do { \
176
(bp)->b_bno = (ufs2_daddr_t)-1; \
180
#define sbdirty() dirty(&sblk)
181
#define cgdirty() dirty(&cgblk)
182
#define sblock (*sblk.b_un.b_fs)
183
#define cgrp (*cgblk.b_un.b_cg)
185
enum fixstate {DONTKNOW, NOFIX, FIX, IGNORE};
189
enum fixstate id_fix; /* policy on fixing errors */
190
int (*id_func)(struct inodesc *);
191
/* function to be applied to blocks of inode */
192
ino_t id_number; /* inode number described */
193
ino_t id_parent; /* for DATA nodes, their parent */
194
ufs_lbn_t id_lbn; /* logical block number of current block */
195
ufs2_daddr_t id_blkno; /* current block number being examined */
196
int id_numfrags; /* number of frags contained in block */
197
off_t id_filesize; /* for DATA nodes, the size of the directory */
198
ufs2_daddr_t id_entryno;/* for DATA nodes, current entry number */
199
int id_loc; /* for DATA nodes, current location in dir */
200
struct direct *id_dirp; /* for DATA nodes, ptr to current entry */
201
char *id_name; /* for DATA nodes, name to find or enter */
202
char id_type; /* type of descriptor, DATA or ADDR */
205
#define DATA 1 /* a directory */
206
#define SNAP 2 /* a snapshot */
207
#define ADDR 3 /* anything but a directory or a snapshot */
210
* Linked list of duplicate blocks.
212
* The list is composed of two parts. The first part of the
213
* list (from duplist through the node pointed to by muldup)
214
* contains a single copy of each duplicate block that has been
215
* found. The second part of the list (from muldup to the end)
216
* contains duplicate blocks that have been found more than once.
217
* To check if a block has been found as a duplicate it is only
218
* necessary to search from duplist through muldup. To find the
219
* total number of times that a block has been found as a duplicate
220
* the entire list must be searched for occurences of the block
221
* in question. The following diagram shows a sample list where
222
* w (found twice), x (found once), y (found three times), and z
223
* (found once) are duplicate block numbers:
225
* w -> y -> x -> z -> y -> w -> y
234
struct dups *duplist; /* head of dup list */
235
struct dups *muldup; /* end of unique duplicate dup block numbers */
238
* Inode cache data structures.
241
struct inoinfo *i_nexthash; /* next entry in hash chain */
242
ino_t i_number; /* inode number of this entry */
243
ino_t i_parent; /* inode number of parent */
244
ino_t i_dotdot; /* inode number of `..' */
245
size_t i_isize; /* size of inode */
246
u_int i_numblks; /* size of block array in bytes */
247
ufs2_daddr_t i_blks[1]; /* actually longer */
248
} **inphead, **inpsort;
249
long numdirs, dirhash, listmax, inplast;
250
long countdirs; /* number of directories we actually found */
252
#define MIBSIZE 3 /* size of fsck sysctl MIBs */
253
int adjrefcnt[MIBSIZE]; /* MIB command to adjust inode reference cnt */
254
int adjblkcnt[MIBSIZE]; /* MIB command to adjust inode block count */
255
int adjndir[MIBSIZE]; /* MIB command to adjust number of directories */
256
int adjnbfree[MIBSIZE]; /* MIB command to adjust number of free blocks */
257
int adjnifree[MIBSIZE]; /* MIB command to adjust number of free inodes */
258
int adjnffree[MIBSIZE]; /* MIB command to adjust number of free frags */
259
int adjnumclusters[MIBSIZE]; /* MIB command to adjust number of free clusters */
260
int freefiles[MIBSIZE]; /* MIB command to free a set of files */
261
int freedirs[MIBSIZE]; /* MIB command to free a set of directories */
262
int freeblks[MIBSIZE]; /* MIB command to free a set of data blocks */
263
struct fsck_cmd cmd; /* sysctl file system update commands */
264
char snapname[BUFSIZ]; /* when doing snapshots, the name of the file */
265
char *cdevname; /* name of device being checked */
266
long dev_bsize; /* computed value of DEV_BSIZE */
267
long secsize; /* actual disk sector size */
268
char nflag; /* assume a no response */
269
char yflag; /* assume a yes response */
270
int bkgrdflag; /* use a snapshot to run on an active system */
271
int bflag; /* location of alternate super block */
272
int debug; /* output debugging info */
273
int inoopt; /* trim out unused inodes */
274
char ckclean; /* only do work if not cleanly unmounted */
275
int cvtlevel; /* convert to newer file system format */
276
int bkgrdcheck; /* determine if background check is possible */
277
int bkgrdsumadj; /* whether the kernel have ability to adjust superblock summary */
278
char usedsoftdep; /* just fix soft dependency inconsistencies */
279
char preen; /* just fix normal inconsistencies */
280
char rerun; /* rerun fsck. Only used in non-preen mode */
281
int returntosingle; /* 1 => return to single user mode on exit */
282
char resolved; /* cleared if unresolved changes => not clean */
283
char havesb; /* superblock has been read */
284
char skipclean; /* skip clean file systems if preening */
285
int fsmodified; /* 1 => write done to file system */
286
int fsreadfd; /* file descriptor for reading file system */
287
int fswritefd; /* file descriptor for writing file system */
289
ufs2_daddr_t maxfsblock; /* number of blocks in the file system */
290
char *blockmap; /* ptr to primary blk allocation map */
291
ino_t maxino; /* number of inodes in file system */
293
ino_t lfdir; /* lost & found directory inode number */
294
const char *lfname; /* lost & found directory name */
295
int lfmode; /* lost & found directory creation mode */
297
ufs2_daddr_t n_blks; /* number of blocks in use */
298
ino_t n_files; /* number of files in use */
300
volatile sig_atomic_t got_siginfo; /* received a SIGINFO */
301
volatile sig_atomic_t got_sigalarm; /* received a SIGALRM */
303
#define clearinode(dp) \
304
if (sblock.fs_magic == FS_UFS1_MAGIC) { \
305
(dp)->dp1 = ufs1_zino; \
307
(dp)->dp2 = ufs2_zino; \
309
struct ufs1_dinode ufs1_zino;
310
struct ufs2_dinode ufs2_zino;
312
#define setbmap(blkno) setbit(blockmap, blkno)
313
#define testbmap(blkno) isset(blockmap, blkno)
314
#define clrbmap(blkno) clrbit(blockmap, blkno)
322
#define EEXIT 8 /* Standard error exit. */
327
void adjust(struct inodesc *, int lcnt);
328
ufs2_daddr_t allocblk(long frags);
329
ino_t allocdir(ino_t parent, ino_t request, int mode);
330
ino_t allocino(ino_t request, int type);
331
void blkerror(ino_t ino, const char *type, ufs2_daddr_t blk);
332
char *blockcheck(char *name);
333
int blread(int fd, char *buf, ufs2_daddr_t blk, long size);
335
void blwrite(int fd, char *buf, ufs2_daddr_t blk, long size);
336
void cacheino(union dinode *dp, ino_t inumber);
339
int changeino(ino_t dir, const char *name, ino_t newnum);
340
int check_cgmagic(int cg, struct cg *cgp);
341
int chkrange(ufs2_daddr_t blk, int cnt);
342
void ckfini(int markclean);
343
int ckinode(union dinode *dp, struct inodesc *);
344
void clri(struct inodesc *, const char *type, int flag);
345
int clearentry(struct inodesc *);
346
void direrror(ino_t ino, const char *errmesg);
347
int dirscan(struct inodesc *);
348
int dofix(struct inodesc *, const char *msg);
349
int eascan(struct inodesc *, struct ufs2_dinode *dp);
350
void ffs_clrblock(struct fs *, u_char *, ufs1_daddr_t);
351
void ffs_fragacct(struct fs *, int, int32_t [], int);
352
int ffs_isblock(struct fs *, u_char *, ufs1_daddr_t);
353
void ffs_setblock(struct fs *, u_char *, ufs1_daddr_t);
354
void fileerror(ino_t cwd, ino_t ino, const char *errmesg);
355
int findino(struct inodesc *);
356
int findname(struct inodesc *);
357
void flush(int fd, struct bufarea *bp);
358
void freeblk(ufs2_daddr_t blkno, long frags);
359
void freeino(ino_t ino);
360
void freeinodebuf(void);
361
int ftypeok(union dinode *dp);
362
void getblk(struct bufarea *bp, ufs2_daddr_t blk, long size);
363
struct bufarea *getdatablk(ufs2_daddr_t blkno, long size);
364
struct inoinfo *getinoinfo(ino_t inumber);
365
union dinode *getnextinode(ino_t inumber, int rebuildcg);
366
void getpathname(char *namebuf, ino_t curdir, ino_t ino);
367
union dinode *ginode(ino_t inumber);
368
void infohandler(int sig);
369
void alarmhandler(int sig);
370
void inocleanup(void);
372
struct inostat *inoinfo(ino_t inum);
373
int linkup(ino_t orphan, ino_t parentdir, char *name);
374
int makeentry(ino_t parent, ino_t ino, const char *name);
375
void panic(const char *fmt, ...) __printflike(1, 2);
378
int pass1check(struct inodesc *);
382
int pass4check(struct inodesc *);
384
void pfatal(const char *fmt, ...) __printflike(1, 2);
385
void pinode(ino_t ino);
386
void propagate(void);
387
void pwarn(const char *fmt, ...) __printflike(1, 2);
388
int readsb(int listerr);
389
int reply(const char *question);
390
void rwerror(const char *mesg, ufs2_daddr_t blk);
391
void sblock_init(void);
392
void setinodebuf(ino_t);
393
int setup(char *dev);
394
void gjournal_check(const char *filesys);