1 /* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)pass2.c 8.4 (Berkeley) 08/14/94"; 10 #endif /* not lint */ 11 12 #include <sys/param.h> 13 #include <sys/time.h> 14 #include <ufs/ufs/dinode.h> 15 #include <ufs/ufs/dir.h> 16 #include <ufs/ffs/fs.h> 17 #include <stdlib.h> 18 #include <string.h> 19 #include "fsck.h" 20 21 #define MINDIRSIZE (sizeof (struct dirtemplate)) 22 23 int pass2check(), blksort(); 24 25 pass2() 26 { 27 register struct dinode *dp; 28 register struct inoinfo **inpp, *inp; 29 struct inoinfo **inpend; 30 struct inodesc curino; 31 struct dinode dino; 32 char pathbuf[MAXPATHLEN + 1]; 33 34 switch (statemap[ROOTINO]) { 35 36 case USTATE: 37 pfatal("ROOT INODE UNALLOCATED"); 38 if (reply("ALLOCATE") == 0) 39 errexit(""); 40 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 41 errexit("CANNOT ALLOCATE ROOT INODE\n"); 42 break; 43 44 case DCLEAR: 45 pfatal("DUPS/BAD IN ROOT INODE"); 46 if (reply("REALLOCATE")) { 47 freeino(ROOTINO); 48 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 49 errexit("CANNOT ALLOCATE ROOT INODE\n"); 50 break; 51 } 52 if (reply("CONTINUE") == 0) 53 errexit(""); 54 break; 55 56 case FSTATE: 57 case FCLEAR: 58 pfatal("ROOT INODE NOT DIRECTORY"); 59 if (reply("REALLOCATE")) { 60 freeino(ROOTINO); 61 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 62 errexit("CANNOT ALLOCATE ROOT INODE\n"); 63 break; 64 } 65 if (reply("FIX") == 0) 66 errexit(""); 67 dp = ginode(ROOTINO); 68 dp->di_mode &= ~IFMT; 69 dp->di_mode |= IFDIR; 70 inodirty(); 71 break; 72 73 case DSTATE: 74 break; 75 76 default: 77 errexit("BAD STATE %d FOR ROOT INODE", statemap[ROOTINO]); 78 } 79 statemap[ROOTINO] = DFOUND; 80 /* 81 * Sort the directory list into disk block order. 82 */ 83 qsort((char *)inpsort, (size_t)inplast, sizeof *inpsort, blksort); 84 /* 85 * Check the integrity of each directory. 86 */ 87 bzero((char *)&curino, sizeof(struct inodesc)); 88 curino.id_type = DATA; 89 curino.id_func = pass2check; 90 dp = &dino; 91 inpend = &inpsort[inplast]; 92 for (inpp = inpsort; inpp < inpend; inpp++) { 93 inp = *inpp; 94 if (inp->i_isize == 0) 95 continue; 96 if (inp->i_isize < MINDIRSIZE) { 97 direrror(inp->i_number, "DIRECTORY TOO SHORT"); 98 inp->i_isize = roundup(MINDIRSIZE, DIRBLKSIZ); 99 if (reply("FIX") == 1) { 100 dp = ginode(inp->i_number); 101 dp->di_size = inp->i_isize; 102 inodirty(); 103 dp = &dino; 104 } 105 } else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) { 106 getpathname(pathbuf, inp->i_number, inp->i_number); 107 pwarn("DIRECTORY %s: LENGTH %d NOT MULTIPLE OF %d", 108 pathbuf, inp->i_isize, DIRBLKSIZ); 109 if (preen) 110 printf(" (ADJUSTED)\n"); 111 inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ); 112 if (preen || reply("ADJUST") == 1) { 113 dp = ginode(inp->i_number); 114 dp->di_size = roundup(inp->i_isize, DIRBLKSIZ); 115 inodirty(); 116 dp = &dino; 117 } 118 } 119 bzero((char *)&dino, sizeof(struct dinode)); 120 dino.di_mode = IFDIR; 121 dp->di_size = inp->i_isize; 122 bcopy((char *)&inp->i_blks[0], (char *)&dp->di_db[0], 123 (size_t)inp->i_numblks); 124 curino.id_number = inp->i_number; 125 curino.id_parent = inp->i_parent; 126 (void)ckinode(dp, &curino); 127 } 128 /* 129 * Now that the parents of all directories have been found, 130 * make another pass to verify the value of `..' 131 */ 132 for (inpp = inpsort; inpp < inpend; inpp++) { 133 inp = *inpp; 134 if (inp->i_parent == 0 || inp->i_isize == 0) 135 continue; 136 if (statemap[inp->i_parent] == DFOUND && 137 statemap[inp->i_number] == DSTATE) 138 statemap[inp->i_number] = DFOUND; 139 if (inp->i_dotdot == inp->i_parent || 140 inp->i_dotdot == (ino_t)-1) 141 continue; 142 if (inp->i_dotdot == 0) { 143 inp->i_dotdot = inp->i_parent; 144 fileerror(inp->i_parent, inp->i_number, "MISSING '..'"); 145 if (reply("FIX") == 0) 146 continue; 147 (void)makeentry(inp->i_number, inp->i_parent, ".."); 148 lncntp[inp->i_parent]--; 149 continue; 150 } 151 fileerror(inp->i_parent, inp->i_number, 152 "BAD INODE NUMBER FOR '..'"); 153 if (reply("FIX") == 0) 154 continue; 155 lncntp[inp->i_dotdot]++; 156 lncntp[inp->i_parent]--; 157 inp->i_dotdot = inp->i_parent; 158 (void)changeino(inp->i_number, "..", inp->i_parent); 159 } 160 /* 161 * Mark all the directories that can be found from the root. 162 */ 163 propagate(); 164 } 165 166 pass2check(idesc) 167 struct inodesc *idesc; 168 { 169 register struct direct *dirp = idesc->id_dirp; 170 register struct inoinfo *inp; 171 int n, entrysize, ret = 0; 172 struct dinode *dp; 173 char *errmsg; 174 struct direct proto; 175 char namebuf[MAXPATHLEN + 1]; 176 char pathbuf[MAXPATHLEN + 1]; 177 178 /* 179 * If converting, set directory entry type. 180 */ 181 if (doinglevel2 && dirp->d_ino > 0 && dirp->d_ino < maxino) { 182 dirp->d_type = typemap[dirp->d_ino]; 183 ret |= ALTERED; 184 } 185 /* 186 * check for "." 187 */ 188 if (idesc->id_entryno != 0) 189 goto chk1; 190 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) { 191 if (dirp->d_ino != idesc->id_number) { 192 direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'"); 193 dirp->d_ino = idesc->id_number; 194 if (reply("FIX") == 1) 195 ret |= ALTERED; 196 } 197 if (newinofmt && dirp->d_type != DT_DIR) { 198 direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'"); 199 dirp->d_type = DT_DIR; 200 if (reply("FIX") == 1) 201 ret |= ALTERED; 202 } 203 goto chk1; 204 } 205 direrror(idesc->id_number, "MISSING '.'"); 206 proto.d_ino = idesc->id_number; 207 if (newinofmt) 208 proto.d_type = DT_DIR; 209 else 210 proto.d_type = 0; 211 proto.d_namlen = 1; 212 (void)strcpy(proto.d_name, "."); 213 entrysize = DIRSIZ(0, &proto); 214 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) { 215 pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n", 216 dirp->d_name); 217 } else if (dirp->d_reclen < entrysize) { 218 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n"); 219 } else if (dirp->d_reclen < 2 * entrysize) { 220 proto.d_reclen = dirp->d_reclen; 221 bcopy((char *)&proto, (char *)dirp, (size_t)entrysize); 222 if (reply("FIX") == 1) 223 ret |= ALTERED; 224 } else { 225 n = dirp->d_reclen - entrysize; 226 proto.d_reclen = entrysize; 227 bcopy((char *)&proto, (char *)dirp, (size_t)entrysize); 228 idesc->id_entryno++; 229 lncntp[dirp->d_ino]--; 230 dirp = (struct direct *)((char *)(dirp) + entrysize); 231 bzero((char *)dirp, (size_t)n); 232 dirp->d_reclen = n; 233 if (reply("FIX") == 1) 234 ret |= ALTERED; 235 } 236 chk1: 237 if (idesc->id_entryno > 1) 238 goto chk2; 239 inp = getinoinfo(idesc->id_number); 240 proto.d_ino = inp->i_parent; 241 if (newinofmt) 242 proto.d_type = DT_DIR; 243 else 244 proto.d_type = 0; 245 proto.d_namlen = 2; 246 (void)strcpy(proto.d_name, ".."); 247 entrysize = DIRSIZ(0, &proto); 248 if (idesc->id_entryno == 0) { 249 n = DIRSIZ(0, dirp); 250 if (dirp->d_reclen < n + entrysize) 251 goto chk2; 252 proto.d_reclen = dirp->d_reclen - n; 253 dirp->d_reclen = n; 254 idesc->id_entryno++; 255 lncntp[dirp->d_ino]--; 256 dirp = (struct direct *)((char *)(dirp) + n); 257 bzero((char *)dirp, (size_t)proto.d_reclen); 258 dirp->d_reclen = proto.d_reclen; 259 } 260 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) { 261 inp->i_dotdot = dirp->d_ino; 262 if (newinofmt && dirp->d_type != DT_DIR) { 263 direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'"); 264 dirp->d_type = DT_DIR; 265 if (reply("FIX") == 1) 266 ret |= ALTERED; 267 } 268 goto chk2; 269 } 270 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) { 271 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 272 pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n", 273 dirp->d_name); 274 inp->i_dotdot = (ino_t)-1; 275 } else if (dirp->d_reclen < entrysize) { 276 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 277 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n"); 278 inp->i_dotdot = (ino_t)-1; 279 } else if (inp->i_parent != 0) { 280 /* 281 * We know the parent, so fix now. 282 */ 283 inp->i_dotdot = inp->i_parent; 284 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 285 proto.d_reclen = dirp->d_reclen; 286 bcopy((char *)&proto, (char *)dirp, (size_t)entrysize); 287 if (reply("FIX") == 1) 288 ret |= ALTERED; 289 } 290 idesc->id_entryno++; 291 if (dirp->d_ino != 0) 292 lncntp[dirp->d_ino]--; 293 return (ret|KEEPON); 294 chk2: 295 if (dirp->d_ino == 0) 296 return (ret|KEEPON); 297 if (dirp->d_namlen <= 2 && 298 dirp->d_name[0] == '.' && 299 idesc->id_entryno >= 2) { 300 if (dirp->d_namlen == 1) { 301 direrror(idesc->id_number, "EXTRA '.' ENTRY"); 302 dirp->d_ino = 0; 303 if (reply("FIX") == 1) 304 ret |= ALTERED; 305 return (KEEPON | ret); 306 } 307 if (dirp->d_name[1] == '.') { 308 direrror(idesc->id_number, "EXTRA '..' ENTRY"); 309 dirp->d_ino = 0; 310 if (reply("FIX") == 1) 311 ret |= ALTERED; 312 return (KEEPON | ret); 313 } 314 } 315 idesc->id_entryno++; 316 n = 0; 317 if (dirp->d_ino > maxino) { 318 fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE"); 319 n = reply("REMOVE"); 320 } else if (newinofmt && 321 ((dirp->d_ino == WINO && dirp->d_type != DT_WHT) || 322 (dirp->d_ino != WINO && dirp->d_type == DT_WHT))) { 323 fileerror(idesc->id_number, dirp->d_ino, "BAD WHITEOUT ENTRY"); 324 dirp->d_ino = WINO; 325 dirp->d_type = DT_WHT; 326 if (reply("FIX") == 1) 327 ret |= ALTERED; 328 } else { 329 again: 330 switch (statemap[dirp->d_ino]) { 331 case USTATE: 332 if (idesc->id_entryno <= 2) 333 break; 334 fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED"); 335 n = reply("REMOVE"); 336 break; 337 338 case DCLEAR: 339 case FCLEAR: 340 if (idesc->id_entryno <= 2) 341 break; 342 if (statemap[dirp->d_ino] == FCLEAR) 343 errmsg = "DUP/BAD"; 344 else if (!preen) 345 errmsg = "ZERO LENGTH DIRECTORY"; 346 else { 347 n = 1; 348 break; 349 } 350 fileerror(idesc->id_number, dirp->d_ino, errmsg); 351 if ((n = reply("REMOVE")) == 1) 352 break; 353 dp = ginode(dirp->d_ino); 354 statemap[dirp->d_ino] = 355 (dp->di_mode & IFMT) == IFDIR ? DSTATE : FSTATE; 356 lncntp[dirp->d_ino] = dp->di_nlink; 357 goto again; 358 359 case DSTATE: 360 if (statemap[idesc->id_number] == DFOUND) 361 statemap[dirp->d_ino] = DFOUND; 362 /* fall through */ 363 364 case DFOUND: 365 inp = getinoinfo(dirp->d_ino); 366 if (inp->i_parent != 0 && idesc->id_entryno > 2) { 367 getpathname(pathbuf, idesc->id_number, 368 idesc->id_number); 369 getpathname(namebuf, dirp->d_ino, dirp->d_ino); 370 pwarn("%s %s %s\n", pathbuf, 371 "IS AN EXTRANEOUS HARD LINK TO DIRECTORY", 372 namebuf); 373 if (preen) 374 printf(" (IGNORED)\n"); 375 else if ((n = reply("REMOVE")) == 1) 376 break; 377 } 378 if (idesc->id_entryno > 2) 379 inp->i_parent = idesc->id_number; 380 /* fall through */ 381 382 case FSTATE: 383 if (newinofmt && dirp->d_type != typemap[dirp->d_ino]) { 384 fileerror(idesc->id_number, dirp->d_ino, 385 "BAD TYPE VALUE"); 386 dirp->d_type = typemap[dirp->d_ino]; 387 if (reply("FIX") == 1) 388 ret |= ALTERED; 389 } 390 lncntp[dirp->d_ino]--; 391 break; 392 393 default: 394 errexit("BAD STATE %d FOR INODE I=%d", 395 statemap[dirp->d_ino], dirp->d_ino); 396 } 397 } 398 if (n == 0) 399 return (ret|KEEPON); 400 dirp->d_ino = 0; 401 return (ret|KEEPON|ALTERED); 402 } 403 404 /* 405 * Routine to sort disk blocks. 406 */ 407 blksort(inpp1, inpp2) 408 struct inoinfo **inpp1, **inpp2; 409 { 410 411 return ((*inpp1)->i_blks[0] - (*inpp2)->i_blks[0]); 412 } 413