1 /* 2 * Copyright (c) 1980, 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char sccsid[] = "@(#)pass2.c 5.21 (Berkeley) 07/12/92"; 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 dino.di_mode = IFDIR; 91 dp = &dino; 92 inpend = &inpsort[inplast]; 93 for (inpp = inpsort; inpp < inpend; inpp++) { 94 inp = *inpp; 95 if (inp->i_isize == 0) 96 continue; 97 if (inp->i_isize < MINDIRSIZE) { 98 direrror(inp->i_number, "DIRECTORY TOO SHORT"); 99 inp->i_isize = roundup(MINDIRSIZE, DIRBLKSIZ); 100 if (reply("FIX") == 1) { 101 dp = ginode(inp->i_number); 102 dp->di_size = inp->i_isize; 103 inodirty(); 104 dp = &dino; 105 } 106 } else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) { 107 getpathname(pathbuf, inp->i_number, inp->i_number); 108 pwarn("DIRECTORY %s: LENGTH %d NOT MULTIPLE OF %d", 109 pathbuf, inp->i_isize, DIRBLKSIZ); 110 if (preen) 111 printf(" (ADJUSTED)\n"); 112 inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ); 113 if (preen || reply("ADJUST") == 1) { 114 dp = ginode(inp->i_number); 115 dp->di_size = roundup(inp->i_isize, DIRBLKSIZ); 116 inodirty(); 117 dp = &dino; 118 } 119 } 120 dp->di_size = inp->i_isize; 121 bcopy((char *)&inp->i_blks[0], (char *)&dp->di_db[0], 122 (size_t)inp->i_numblks); 123 curino.id_number = inp->i_number; 124 curino.id_parent = inp->i_parent; 125 (void)ckinode(dp, &curino); 126 } 127 /* 128 * Now that the parents of all directories have been found, 129 * make another pass to verify the value of `..' 130 */ 131 for (inpp = inpsort; inpp < inpend; inpp++) { 132 inp = *inpp; 133 if (inp->i_parent == 0 || inp->i_isize == 0) 134 continue; 135 if (statemap[inp->i_parent] == DFOUND && 136 statemap[inp->i_number] == DSTATE) 137 statemap[inp->i_number] = DFOUND; 138 if (inp->i_dotdot == inp->i_parent || 139 inp->i_dotdot == (ino_t)-1) 140 continue; 141 if (inp->i_dotdot == 0) { 142 inp->i_dotdot = inp->i_parent; 143 fileerror(inp->i_parent, inp->i_number, "MISSING '..'"); 144 if (reply("FIX") == 0) 145 continue; 146 (void)makeentry(inp->i_number, inp->i_parent, ".."); 147 lncntp[inp->i_parent]--; 148 continue; 149 } 150 fileerror(inp->i_parent, inp->i_number, 151 "BAD INODE NUMBER FOR '..'"); 152 if (reply("FIX") == 0) 153 continue; 154 lncntp[inp->i_dotdot]++; 155 lncntp[inp->i_parent]--; 156 inp->i_dotdot = inp->i_parent; 157 (void)changeino(inp->i_number, "..", inp->i_parent); 158 } 159 /* 160 * Mark all the directories that can be found from the root. 161 */ 162 propagate(); 163 } 164 165 pass2check(idesc) 166 struct inodesc *idesc; 167 { 168 register struct direct *dirp = idesc->id_dirp; 169 register struct inoinfo *inp; 170 int n, entrysize, ret = 0; 171 struct dinode *dp; 172 char *errmsg; 173 struct direct proto; 174 char namebuf[MAXPATHLEN + 1]; 175 char pathbuf[MAXPATHLEN + 1]; 176 177 /* 178 * If converting, set directory entry type. 179 */ 180 if (doinglevel2 && dirp->d_ino > 0 && dirp->d_ino < maxino) { 181 dirp->d_type = typemap[dirp->d_ino]; 182 ret |= ALTERED; 183 } 184 /* 185 * check for "." 186 */ 187 if (idesc->id_entryno != 0) 188 goto chk1; 189 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) { 190 if (dirp->d_ino != idesc->id_number) { 191 direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'"); 192 dirp->d_ino = idesc->id_number; 193 if (reply("FIX") == 1) 194 ret |= ALTERED; 195 } 196 if (newinofmt && dirp->d_type != DT_DIR) { 197 direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'"); 198 dirp->d_type = DT_DIR; 199 if (reply("FIX") == 1) 200 ret |= ALTERED; 201 } 202 goto chk1; 203 } 204 direrror(idesc->id_number, "MISSING '.'"); 205 proto.d_ino = idesc->id_number; 206 if (newinofmt) 207 proto.d_type = DT_DIR; 208 else 209 proto.d_type = 0; 210 proto.d_namlen = 1; 211 (void)strcpy(proto.d_name, "."); 212 entrysize = DIRSIZ(0, &proto); 213 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) { 214 pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n", 215 dirp->d_name); 216 } else if (dirp->d_reclen < entrysize) { 217 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n"); 218 } else if (dirp->d_reclen < 2 * entrysize) { 219 proto.d_reclen = dirp->d_reclen; 220 bcopy((char *)&proto, (char *)dirp, (size_t)entrysize); 221 if (reply("FIX") == 1) 222 ret |= ALTERED; 223 } else { 224 n = dirp->d_reclen - entrysize; 225 proto.d_reclen = entrysize; 226 bcopy((char *)&proto, (char *)dirp, (size_t)entrysize); 227 idesc->id_entryno++; 228 lncntp[dirp->d_ino]--; 229 dirp = (struct direct *)((char *)(dirp) + entrysize); 230 bzero((char *)dirp, (size_t)n); 231 dirp->d_reclen = n; 232 if (reply("FIX") == 1) 233 ret |= ALTERED; 234 } 235 chk1: 236 if (idesc->id_entryno > 1) 237 goto chk2; 238 inp = getinoinfo(idesc->id_number); 239 proto.d_ino = inp->i_parent; 240 if (newinofmt) 241 proto.d_type = DT_DIR; 242 else 243 proto.d_type = 0; 244 proto.d_namlen = 2; 245 (void)strcpy(proto.d_name, ".."); 246 entrysize = DIRSIZ(0, &proto); 247 if (idesc->id_entryno == 0) { 248 n = DIRSIZ(0, dirp); 249 if (dirp->d_reclen < n + entrysize) 250 goto chk2; 251 proto.d_reclen = dirp->d_reclen - n; 252 dirp->d_reclen = n; 253 idesc->id_entryno++; 254 lncntp[dirp->d_ino]--; 255 dirp = (struct direct *)((char *)(dirp) + n); 256 bzero((char *)dirp, (size_t)proto.d_reclen); 257 dirp->d_reclen = proto.d_reclen; 258 } 259 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) { 260 inp->i_dotdot = dirp->d_ino; 261 if (newinofmt && dirp->d_type != DT_DIR) { 262 direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'"); 263 dirp->d_type = DT_DIR; 264 if (reply("FIX") == 1) 265 ret |= ALTERED; 266 } 267 goto chk2; 268 } 269 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) { 270 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 271 pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n", 272 dirp->d_name); 273 inp->i_dotdot = (ino_t)-1; 274 } else if (dirp->d_reclen < entrysize) { 275 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 276 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n"); 277 inp->i_dotdot = (ino_t)-1; 278 } else if (inp->i_parent != 0) { 279 /* 280 * We know the parent, so fix now. 281 */ 282 inp->i_dotdot = inp->i_parent; 283 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 284 proto.d_reclen = dirp->d_reclen; 285 bcopy((char *)&proto, (char *)dirp, (size_t)entrysize); 286 if (reply("FIX") == 1) 287 ret |= ALTERED; 288 } 289 idesc->id_entryno++; 290 if (dirp->d_ino != 0) 291 lncntp[dirp->d_ino]--; 292 return (ret|KEEPON); 293 chk2: 294 if (dirp->d_ino == 0) 295 return (ret|KEEPON); 296 if (dirp->d_namlen <= 2 && 297 dirp->d_name[0] == '.' && 298 idesc->id_entryno >= 2) { 299 if (dirp->d_namlen == 1) { 300 direrror(idesc->id_number, "EXTRA '.' ENTRY"); 301 dirp->d_ino = 0; 302 if (reply("FIX") == 1) 303 ret |= ALTERED; 304 return (KEEPON | ret); 305 } 306 if (dirp->d_name[1] == '.') { 307 direrror(idesc->id_number, "EXTRA '..' ENTRY"); 308 dirp->d_ino = 0; 309 if (reply("FIX") == 1) 310 ret |= ALTERED; 311 return (KEEPON | ret); 312 } 313 } 314 idesc->id_entryno++; 315 n = 0; 316 if (dirp->d_ino > maxino) { 317 fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE"); 318 n = reply("REMOVE"); 319 } else { 320 again: 321 switch (statemap[dirp->d_ino]) { 322 case USTATE: 323 if (idesc->id_entryno <= 2) 324 break; 325 fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED"); 326 n = reply("REMOVE"); 327 break; 328 329 case DCLEAR: 330 case FCLEAR: 331 if (idesc->id_entryno <= 2) 332 break; 333 if (statemap[dirp->d_ino] == DCLEAR) 334 errmsg = "ZERO LENGTH DIRECTORY"; 335 else 336 errmsg = "DUP/BAD"; 337 fileerror(idesc->id_number, dirp->d_ino, errmsg); 338 if ((n = reply("REMOVE")) == 1) 339 break; 340 dp = ginode(dirp->d_ino); 341 statemap[dirp->d_ino] = 342 (dp->di_mode & IFMT) == IFDIR ? DSTATE : FSTATE; 343 lncntp[dirp->d_ino] = dp->di_nlink; 344 goto again; 345 346 case DSTATE: 347 if (statemap[idesc->id_number] == DFOUND) 348 statemap[dirp->d_ino] = DFOUND; 349 /* fall through */ 350 351 case DFOUND: 352 inp = getinoinfo(dirp->d_ino); 353 if (inp->i_parent != 0 && idesc->id_entryno > 2) { 354 getpathname(pathbuf, idesc->id_number, 355 idesc->id_number); 356 getpathname(namebuf, dirp->d_ino, dirp->d_ino); 357 pwarn("%s %s %s\n", pathbuf, 358 "IS AN EXTRANEOUS HARD LINK TO DIRECTORY", 359 namebuf); 360 if (preen) 361 printf(" (IGNORED)\n"); 362 else if ((n = reply("REMOVE")) == 1) 363 break; 364 } 365 if (idesc->id_entryno > 2) 366 inp->i_parent = idesc->id_number; 367 /* fall through */ 368 369 case FSTATE: 370 if (newinofmt && dirp->d_type != typemap[dirp->d_ino]) { 371 fileerror(idesc->id_number, dirp->d_ino, 372 "BAD TYPE VALUE"); 373 dirp->d_type = typemap[dirp->d_ino]; 374 if (reply("FIX") == 1) 375 ret |= ALTERED; 376 } 377 lncntp[dirp->d_ino]--; 378 break; 379 380 default: 381 errexit("BAD STATE %d FOR INODE I=%d", 382 statemap[dirp->d_ino], dirp->d_ino); 383 } 384 } 385 if (n == 0) 386 return (ret|KEEPON); 387 dirp->d_ino = 0; 388 return (ret|KEEPON|ALTERED); 389 } 390 391 /* 392 * Routine to sort disk blocks. 393 */ 394 blksort(inpp1, inpp2) 395 struct inoinfo **inpp1, **inpp2; 396 { 397 398 return ((*inpp1)->i_blks[0] - (*inpp2)->i_blks[0]); 399 } 400