1 /* $NetBSD: fsck.h,v 1.49 2011/03/06 17:08:16 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * 8 * This software was developed for the FreeBSD Project by Marshall 9 * Kirk McKusick and Network Associates Laboratories, the Security 10 * Research Division of Network Associates, Inc. under DARPA/SPAWAR 11 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 12 * research program 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 3. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)fsck.h 8.4 (Berkeley) 5/9/95 39 */ 40 41 #include <stdio.h> 42 #include <sys/queue.h> 43 #include <machine/bswap.h> 44 45 #ifdef PROGRESS 46 #include "progress.h" 47 #endif /* PROGRESS */ 48 49 #define MAXDUP 10 /* limit on dup blks (per inode) */ 50 #define MAXBAD 10 /* limit on bad blks (per inode) */ 51 #define MAXBUFSPACE 40*1024 /* maximum space to allocate to buffers */ 52 #define INOBUFSIZE 56*1024 /* size of buffer to read inodes in pass1 */ 53 54 union dinode { 55 struct ufs1_dinode dp1; 56 struct ufs2_dinode dp2; 57 }; 58 #define DIP(dp, field) \ 59 (is_ufs2 ? (dp)->dp2.di_##field : (dp)->dp1.di_##field) 60 61 #define DIP_SET(dp, field, val) do { \ 62 if (is_ufs2) \ 63 (dp)->dp2.di_##field = (val); \ 64 else \ 65 (dp)->dp1.di_##field = (val); \ 66 } while (0) 67 68 #ifndef BUFSIZ 69 #define BUFSIZ 1024 70 #endif 71 72 /* 73 * Each inode on the filesystem is described by the following structure. 74 * The linkcnt is initially set to the value in the inode. Each time it 75 * is found during the descent in passes 2, 3, and 4 the count is 76 * decremented. Any inodes whose count is non-zero after pass 4 needs to 77 * have its link count adjusted by the value remaining in ino_linkcnt. 78 */ 79 struct inostat { 80 char ino_state; /* state of inode, see below */ 81 char ino_type; /* type of inode */ 82 short ino_linkcnt; /* number of links not found */ 83 }; 84 /* 85 * Inode states. 86 */ 87 #define USTATE 01 /* inode not allocated */ 88 #define FSTATE 02 /* inode is file */ 89 #define DSTATE 03 /* inode is directory */ 90 #define DFOUND 04 /* directory found during descent */ 91 #define DCLEAR 05 /* directory is to be cleared */ 92 #define FCLEAR 06 /* file is to be cleared */ 93 #define DMARK 07 /* used in propagate()'s traversal algorithm */ 94 95 /* 96 * Inode state information is contained on per cylinder group lists 97 * which are described by the following structure. 98 */ 99 struct inostatlist { 100 long il_numalloced; /* number of inodes allocated in this cg */ 101 struct inostat *il_stat;/* inostat info for this cylinder group */ 102 } *inostathead; 103 104 105 /* 106 * buffer cache structure. 107 */ 108 struct bufarea { 109 struct bufarea *b_next; /* free list queue */ 110 struct bufarea *b_prev; /* free list queue */ 111 daddr_t b_bno; 112 int b_size; 113 int b_errs; 114 int b_flags; 115 union { 116 char *b_buf; /* buffer space */ 117 int32_t *b_indir1; /* indirect block */ 118 int64_t *b_indir2; /* indirect block */ 119 struct fs *b_fs; /* super block */ 120 struct cg *b_cg; /* cylinder group */ 121 struct ufs1_dinode *b_dinode1; /* UFS1 inode block */ 122 struct ufs2_dinode *b_dinode2; /* UFS2 inode block */ 123 struct appleufslabel *b_appleufs; /* Apple UFS volume label */ 124 } b_un; 125 char b_dirty; 126 }; 127 128 #define IBLK(bp, i) \ 129 (is_ufs2 ? (bp)->b_un.b_indir2[i] : (bp)->b_un.b_indir1[i]) 130 131 #define IBLK_SET(bp, i, val) do { \ 132 if (is_ufs2) \ 133 (bp)->b_un.b_indir2[i] = (val); \ 134 else \ 135 (bp)->b_un.b_indir1[i] = (val); \ 136 } while (0) 137 138 #define B_INUSE 1 139 140 #define MINBUFS 5 /* minimum number of buffers required */ 141 struct bufarea bufhead; /* head of list of other blks in filesys */ 142 struct bufarea sblk; /* file system superblock */ 143 struct bufarea asblk; /* file system superblock */ 144 struct bufarea cgblk; /* cylinder group blocks */ 145 struct bufarea appleufsblk; /* Apple UFS volume label */ 146 struct bufarea *pdirbp; /* current directory contents */ 147 struct bufarea *pbp; /* current inode block */ 148 149 #define dirty(bp) (bp)->b_dirty = 1 150 #define initbarea(bp) \ 151 (bp)->b_dirty = 0; \ 152 (bp)->b_bno = (daddr_t)-1; \ 153 (bp)->b_flags = 0; 154 155 struct fs *sblock; 156 struct fs *altsblock; 157 struct cg *cgrp; 158 struct fs *sblocksave; 159 #define sbdirty() \ 160 do { \ 161 memmove(sblk.b_un.b_fs, sblock, SBLOCKSIZE); \ 162 sb_oldfscompat_write(sblk.b_un.b_fs, sblocksave); \ 163 if (needswap) \ 164 ffs_sb_swap(sblk.b_un.b_fs, sblk.b_un.b_fs); \ 165 sblk.b_dirty = 1; \ 166 } while (0) 167 #define cgdirty() do {copyback_cg(&cgblk); cgblk.b_dirty = 1;} while (0) 168 169 #define appleufsdirty() \ 170 do { \ 171 appleufsblk.b_un.b_appleufs->ul_checksum = 0; \ 172 appleufsblk.b_un.b_appleufs->ul_checksum = \ 173 ffs_appleufs_cksum(appleufsblk.b_un.b_appleufs); \ 174 appleufsblk.b_dirty = 1; \ 175 } while (0) 176 177 enum fixstate {DONTKNOW, NOFIX, FIX, IGNORE}; 178 179 struct inodesc { 180 enum fixstate id_fix; /* policy on fixing errors */ 181 int (*id_func) /* function to be applied to blocks of inode */ 182 (struct inodesc *); 183 ino_t id_number; /* inode number described */ 184 ino_t id_parent; /* for DATA nodes, their parent */ 185 daddr_t id_blkno; /* current block number being examined */ 186 int id_numfrags; /* number of frags contained in block */ 187 int64_t id_filesize; /* for DATA nodes, the size of the directory */ 188 int id_loc; /* for DATA nodes, current location in dir */ 189 int64_t id_entryno; /* for DATA nodes, current entry number */ 190 struct direct *id_dirp; /* for DATA nodes, ptr to current entry */ 191 const char *id_name; /* for DATA nodes, name to find or enter */ 192 char id_type; /* type of descriptor, DATA or ADDR */ 193 uid_t id_uid; /* ownerchip of inode described */ 194 gid_t id_gid; 195 }; 196 /* file types */ 197 #define DATA 1 198 #define SNAP 2 199 #define ADDR 3 200 201 /* 202 * Linked list of duplicate blocks. 203 * 204 * The list is composed of two parts. The first part of the 205 * list (from duplist through the node pointed to by muldup) 206 * contains a single copy of each duplicate block that has been 207 * found. The second part of the list (from muldup to the end) 208 * contains duplicate blocks that have been found more than once. 209 * To check if a block has been found as a duplicate it is only 210 * necessary to search from duplist through muldup. To find the 211 * total number of times that a block has been found as a duplicate 212 * the entire list must be searched for occurrences of the block 213 * in question. The following diagram shows a sample list where 214 * w (found twice), x (found once), y (found three times), and z 215 * (found once) are duplicate block numbers: 216 * 217 * w -> y -> x -> z -> y -> w -> y 218 * ^ ^ 219 * | | 220 * duplist muldup 221 */ 222 struct dups { 223 struct dups *next; 224 daddr_t dup; 225 }; 226 struct dups *duplist; /* head of dup list */ 227 struct dups *muldup; /* end of unique duplicate dup block numbers */ 228 229 /* 230 * Linked list of inodes with zero link counts. 231 */ 232 struct zlncnt { 233 struct zlncnt *next; 234 ino_t zlncnt; 235 }; 236 struct zlncnt *zlnhead; /* head of zero link count list */ 237 238 /* 239 * Inode cache data structures. 240 */ 241 struct inoinfo { 242 struct inoinfo *i_nexthash; /* next entry in hash chain */ 243 struct inoinfo *i_child, *i_sibling; 244 ino_t i_number; /* inode number of this entry */ 245 ino_t i_parent; /* inode number of parent */ 246 ino_t i_dotdot; /* inode number of `..' */ 247 size_t i_isize; /* size of inode */ 248 u_int i_numblks; /* size of block array in bytes */ 249 int64_t i_blks[1]; /* actually longer */ 250 } **inphead, **inpsort; 251 long numdirs, dirhash, listmax, inplast; 252 253 /* 254 * quota usage structures 255 */ 256 struct uquot { 257 uint64_t uq_b; /* block usage */ 258 uint64_t uq_i; /* inode usage */ 259 SLIST_ENTRY(uquot) uq_entries; 260 uint32_t uq_uid; /* uid/gid of the owner */ 261 }; 262 SLIST_HEAD(uquot_hash, uquot); 263 struct uquot_hash *uquot_user_hash; 264 struct uquot_hash *uquot_group_hash; 265 uint8_t q2h_hash_shift; 266 uint16_t q2h_hash_mask; 267 268 long dev_bsize; /* computed value of DEV_BSIZE */ 269 long secsize; /* actual disk sector size */ 270 char nflag; /* assume a no response */ 271 char yflag; /* assume a yes response */ 272 int Uflag; /* resolve user names */ 273 int bflag; /* location of alternate super block */ 274 int debug; /* output debugging info */ 275 int cvtlevel; /* convert to newer file system format */ 276 int doinglevel1; /* converting to new cylinder group format */ 277 int doinglevel2; /* converting to new inode format */ 278 int newinofmt; /* filesystem has new inode format */ 279 char usedsoftdep; /* just fix soft dependency inconsistencies */ 280 int preen; /* just fix normal inconsistencies */ 281 int quiet; /* Don't print anything if clean */ 282 int forceimage; /* file system is an image file */ 283 int doswap; /* convert byte order */ 284 int needswap; /* need to convert byte order in memory */ 285 int is_ufs2; /* we're dealing with an UFS2 filesystem */ 286 int do_blkswap; /* need to do block addr byteswap */ 287 int do_dirswap; /* need to do dir entry byteswap */ 288 int endian; /* endian coversion */ 289 int markclean; /* mark file system clean when done */ 290 char havesb; /* superblock has been read */ 291 char skipclean; /* skip clean file systems if preening */ 292 int fsmodified; /* 1 => write done to file system */ 293 int fsreadfd; /* file descriptor for reading file system */ 294 int fswritefd; /* file descriptor for writing file system */ 295 int rerun; /* rerun fsck. Only used in non-preen mode */ 296 char resolved; /* cleared if unresolved changes => not clean */ 297 int isappleufs; /* filesystem is Apple UFS */ 298 299 daddr_t maxfsblock; /* number of blocks in the file system */ 300 char *blockmap; /* ptr to primary blk allocation map */ 301 ino_t maxino; /* number of inodes in file system */ 302 303 int dirblksiz; 304 305 extern ino_t lfdir; /* lost & found directory inode number */ 306 extern const char *lfname; /* lost & found directory name */ 307 extern int lfmode; /* lost & found directory creation mode */ 308 309 daddr_t n_blks; /* number of blocks in use */ 310 ino_t n_files; /* number of files in use */ 311 312 long countdirs; 313 314 int got_siginfo; /* received a SIGINFO */ 315 316 #define clearinode(dp) \ 317 do { \ 318 if (is_ufs2) \ 319 (dp)->dp2 = ufs2_zino; \ 320 else \ 321 (dp)->dp1 = ufs1_zino; \ 322 } while (0) 323 324 struct ufs1_dinode ufs1_zino; 325 struct ufs2_dinode ufs2_zino; 326 327 #define setbmap(blkno) setbit(blockmap, blkno) 328 #define testbmap(blkno) isset(blockmap, blkno) 329 #define clrbmap(blkno) clrbit(blockmap, blkno) 330 331 #define STOP 0x01 332 #define SKIP 0x02 333 #define KEEPON 0x04 334 #define ALTERED 0x08 335 #define FOUND 0x10 336 337 /* some inline functs to help the byte-swapping mess */ 338 static inline u_int16_t iswap16 (u_int16_t); 339 static inline u_int32_t iswap32 (u_int32_t); 340 static inline u_int64_t iswap64 (u_int64_t); 341 342 static inline u_int16_t 343 iswap16(u_int16_t x) 344 { 345 if (needswap) 346 return bswap16(x); 347 else return x; 348 } 349 350 static inline u_int32_t 351 iswap32(u_int32_t x) 352 { 353 if (needswap) 354 return bswap32(x); 355 else return x; 356 } 357 358 static inline u_int64_t 359 iswap64(u_int64_t x) 360 { 361 if (needswap) 362 return bswap64(x); 363 else return x; 364 } 365