pass2.c revision 86514
1/* 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35#if 0 36static const char sccsid[] = "@(#)pass2.c 8.9 (Berkeley) 4/28/95"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: head/sbin/fsck_ffs/pass2.c 86514 2001-11-17 23:48:21Z iedowse $"; 40#endif /* not lint */ 41 42#include <sys/param.h> 43 44#include <ufs/ufs/dinode.h> 45#include <ufs/ufs/dir.h> 46#include <ufs/ffs/fs.h> 47 48#include <err.h> 49#include <string.h> 50 51#include "fsck.h" 52 53#define MINDIRSIZE (sizeof (struct dirtemplate)) 54 55static int blksort __P((const void *, const void *)); 56static int pass2check __P((struct inodesc *)); 57 58void 59pass2() 60{ 61 register struct dinode *dp; 62 register struct inoinfo **inpp, *inp; 63 struct inoinfo **inpend; 64 struct inodesc curino; 65 struct dinode dino; 66 char pathbuf[MAXPATHLEN + 1]; 67 68 switch (inoinfo(ROOTINO)->ino_state) { 69 70 case USTATE: 71 pfatal("ROOT INODE UNALLOCATED"); 72 if (reply("ALLOCATE") == 0) { 73 ckfini(0); 74 exit(EEXIT); 75 } 76 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 77 errx(EEXIT, "CANNOT ALLOCATE ROOT INODE"); 78 break; 79 80 case DCLEAR: 81 pfatal("DUPS/BAD IN ROOT INODE"); 82 if (reply("REALLOCATE")) { 83 freeino(ROOTINO); 84 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 85 errx(EEXIT, "CANNOT ALLOCATE ROOT INODE"); 86 break; 87 } 88 if (reply("CONTINUE") == 0) { 89 ckfini(0); 90 exit(EEXIT); 91 } 92 break; 93 94 case FSTATE: 95 case FCLEAR: 96 pfatal("ROOT INODE NOT DIRECTORY"); 97 if (reply("REALLOCATE")) { 98 freeino(ROOTINO); 99 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 100 errx(EEXIT, "CANNOT ALLOCATE ROOT INODE"); 101 break; 102 } 103 if (reply("FIX") == 0) { 104 ckfini(0); 105 exit(EEXIT); 106 } 107 dp = ginode(ROOTINO); 108 dp->di_mode &= ~IFMT; 109 dp->di_mode |= IFDIR; 110 inodirty(); 111 break; 112 113 case DSTATE: 114 break; 115 116 default: 117 errx(EEXIT, "BAD STATE %d FOR ROOT INODE", 118 inoinfo(ROOTINO)->ino_state); 119 } 120 inoinfo(ROOTINO)->ino_state = DFOUND; 121 if (newinofmt) { 122 inoinfo(WINO)->ino_state = FSTATE; 123 inoinfo(WINO)->ino_type = DT_WHT; 124 } 125 /* 126 * Sort the directory list into disk block order. 127 */ 128 qsort((char *)inpsort, (size_t)inplast, sizeof *inpsort, blksort); 129 /* 130 * Check the integrity of each directory. 131 */ 132 memset(&curino, 0, sizeof(struct inodesc)); 133 curino.id_type = DATA; 134 curino.id_func = pass2check; 135 dp = &dino; 136 inpend = &inpsort[inplast]; 137 for (inpp = inpsort; inpp < inpend; inpp++) { 138 if (got_siginfo) { 139 printf("%s: phase 2: dir %d of %d (%d%%)\n", cdevname, 140 inpp - inpsort, (int)inplast, 141 (int)((inpp - inpsort) * 100 / inplast)); 142 got_siginfo = 0; 143 } 144 inp = *inpp; 145 if (inp->i_isize == 0) 146 continue; 147 if (inp->i_isize < MINDIRSIZE) { 148 direrror(inp->i_number, "DIRECTORY TOO SHORT"); 149 inp->i_isize = roundup(MINDIRSIZE, DIRBLKSIZ); 150 if (reply("FIX") == 1) { 151 dp = ginode(inp->i_number); 152 dp->di_size = inp->i_isize; 153 inodirty(); 154 dp = &dino; 155 } 156 } else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) { 157 getpathname(pathbuf, inp->i_number, inp->i_number); 158 if (usedsoftdep) 159 pfatal("%s %s: LENGTH %d NOT MULTIPLE OF %d", 160 "DIRECTORY", pathbuf, inp->i_isize, 161 DIRBLKSIZ); 162 else 163 pwarn("%s %s: LENGTH %d NOT MULTIPLE OF %d", 164 "DIRECTORY", pathbuf, inp->i_isize, 165 DIRBLKSIZ); 166 if (preen) 167 printf(" (ADJUSTED)\n"); 168 inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ); 169 if (preen || reply("ADJUST") == 1) { 170 dp = ginode(inp->i_number); 171 dp->di_size = roundup(inp->i_isize, DIRBLKSIZ); 172 inodirty(); 173 dp = &dino; 174 } 175 } 176 memset(&dino, 0, sizeof(struct dinode)); 177 dino.di_mode = IFDIR; 178 dp->di_size = inp->i_isize; 179 memmove(&dp->di_db[0], &inp->i_blks[0], (size_t)inp->i_numblks); 180 curino.id_number = inp->i_number; 181 curino.id_parent = inp->i_parent; 182 (void)ckinode(dp, &curino); 183 } 184 /* 185 * Now that the parents of all directories have been found, 186 * make another pass to verify the value of `..' 187 */ 188 for (inpp = inpsort; inpp < inpend; inpp++) { 189 inp = *inpp; 190 if (inp->i_parent == 0 || inp->i_isize == 0) 191 continue; 192 if (inoinfo(inp->i_parent)->ino_state == DFOUND && 193 inoinfo(inp->i_number)->ino_state == DSTATE) 194 inoinfo(inp->i_number)->ino_state = DFOUND; 195 if (inp->i_dotdot == inp->i_parent || 196 inp->i_dotdot == (ino_t)-1) 197 continue; 198 if (inp->i_dotdot == 0) { 199 inp->i_dotdot = inp->i_parent; 200 fileerror(inp->i_parent, inp->i_number, "MISSING '..'"); 201 if (reply("FIX") == 0) 202 continue; 203 (void)makeentry(inp->i_number, inp->i_parent, ".."); 204 inoinfo(inp->i_parent)->ino_linkcnt--; 205 continue; 206 } 207 fileerror(inp->i_parent, inp->i_number, 208 "BAD INODE NUMBER FOR '..'"); 209 if (reply("FIX") == 0) 210 continue; 211 inoinfo(inp->i_dotdot)->ino_linkcnt++; 212 inoinfo(inp->i_parent)->ino_linkcnt--; 213 inp->i_dotdot = inp->i_parent; 214 (void)changeino(inp->i_number, "..", inp->i_parent); 215 } 216 /* 217 * Mark all the directories that can be found from the root. 218 */ 219 propagate(); 220} 221 222static int 223pass2check(idesc) 224 struct inodesc *idesc; 225{ 226 register struct direct *dirp = idesc->id_dirp; 227 register struct inoinfo *inp; 228 int n, entrysize, ret = 0; 229 struct dinode *dp; 230 char *errmsg; 231 struct direct proto; 232 char namebuf[MAXPATHLEN + 1]; 233 char pathbuf[MAXPATHLEN + 1]; 234 235 /* 236 * If converting, set directory entry type. 237 */ 238 if (doinglevel2 && dirp->d_ino > 0 && dirp->d_ino < maxino) { 239 dirp->d_type = inoinfo(dirp->d_ino)->ino_type; 240 ret |= ALTERED; 241 } 242 /* 243 * check for "." 244 */ 245 if (idesc->id_entryno != 0) 246 goto chk1; 247 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) { 248 if (dirp->d_ino != idesc->id_number) { 249 direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'"); 250 dirp->d_ino = idesc->id_number; 251 if (reply("FIX") == 1) 252 ret |= ALTERED; 253 } 254 if (newinofmt && dirp->d_type != DT_DIR) { 255 direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'"); 256 dirp->d_type = DT_DIR; 257 if (reply("FIX") == 1) 258 ret |= ALTERED; 259 } 260 goto chk1; 261 } 262 direrror(idesc->id_number, "MISSING '.'"); 263 proto.d_ino = idesc->id_number; 264 if (newinofmt) 265 proto.d_type = DT_DIR; 266 else 267 proto.d_type = 0; 268 proto.d_namlen = 1; 269 (void)strcpy(proto.d_name, "."); 270# if BYTE_ORDER == LITTLE_ENDIAN 271 if (!newinofmt) { 272 u_char tmp; 273 274 tmp = proto.d_type; 275 proto.d_type = proto.d_namlen; 276 proto.d_namlen = tmp; 277 } 278# endif 279 entrysize = DIRSIZ(0, &proto); 280 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) { 281 pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n", 282 dirp->d_name); 283 } else if (dirp->d_reclen < entrysize) { 284 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n"); 285 } else if (dirp->d_reclen < 2 * entrysize) { 286 proto.d_reclen = dirp->d_reclen; 287 memmove(dirp, &proto, (size_t)entrysize); 288 if (reply("FIX") == 1) 289 ret |= ALTERED; 290 } else { 291 n = dirp->d_reclen - entrysize; 292 proto.d_reclen = entrysize; 293 memmove(dirp, &proto, (size_t)entrysize); 294 idesc->id_entryno++; 295 inoinfo(dirp->d_ino)->ino_linkcnt--; 296 dirp = (struct direct *)((char *)(dirp) + entrysize); 297 memset(dirp, 0, (size_t)n); 298 dirp->d_reclen = n; 299 if (reply("FIX") == 1) 300 ret |= ALTERED; 301 } 302chk1: 303 if (idesc->id_entryno > 1) 304 goto chk2; 305 inp = getinoinfo(idesc->id_number); 306 proto.d_ino = inp->i_parent; 307 if (newinofmt) 308 proto.d_type = DT_DIR; 309 else 310 proto.d_type = 0; 311 proto.d_namlen = 2; 312 (void)strcpy(proto.d_name, ".."); 313# if BYTE_ORDER == LITTLE_ENDIAN 314 if (!newinofmt) { 315 u_char tmp; 316 317 tmp = proto.d_type; 318 proto.d_type = proto.d_namlen; 319 proto.d_namlen = tmp; 320 } 321# endif 322 entrysize = DIRSIZ(0, &proto); 323 if (idesc->id_entryno == 0) { 324 n = DIRSIZ(0, dirp); 325 if (dirp->d_reclen < n + entrysize) 326 goto chk2; 327 proto.d_reclen = dirp->d_reclen - n; 328 dirp->d_reclen = n; 329 idesc->id_entryno++; 330 inoinfo(dirp->d_ino)->ino_linkcnt--; 331 dirp = (struct direct *)((char *)(dirp) + n); 332 memset(dirp, 0, (size_t)proto.d_reclen); 333 dirp->d_reclen = proto.d_reclen; 334 } 335 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) { 336 inp->i_dotdot = dirp->d_ino; 337 if (newinofmt && dirp->d_type != DT_DIR) { 338 direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'"); 339 dirp->d_type = DT_DIR; 340 if (reply("FIX") == 1) 341 ret |= ALTERED; 342 } 343 goto chk2; 344 } 345 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) { 346 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 347 pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n", 348 dirp->d_name); 349 inp->i_dotdot = (ino_t)-1; 350 } else if (dirp->d_reclen < entrysize) { 351 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 352 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n"); 353 inp->i_dotdot = (ino_t)-1; 354 } else if (inp->i_parent != 0) { 355 /* 356 * We know the parent, so fix now. 357 */ 358 inp->i_dotdot = inp->i_parent; 359 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 360 proto.d_reclen = dirp->d_reclen; 361 memmove(dirp, &proto, (size_t)entrysize); 362 if (reply("FIX") == 1) 363 ret |= ALTERED; 364 } 365 idesc->id_entryno++; 366 if (dirp->d_ino != 0) 367 inoinfo(dirp->d_ino)->ino_linkcnt--; 368 return (ret|KEEPON); 369chk2: 370 if (dirp->d_ino == 0) 371 return (ret|KEEPON); 372 if (dirp->d_namlen <= 2 && 373 dirp->d_name[0] == '.' && 374 idesc->id_entryno >= 2) { 375 if (dirp->d_namlen == 1) { 376 direrror(idesc->id_number, "EXTRA '.' ENTRY"); 377 dirp->d_ino = 0; 378 if (reply("FIX") == 1) 379 ret |= ALTERED; 380 return (KEEPON | ret); 381 } 382 if (dirp->d_name[1] == '.') { 383 direrror(idesc->id_number, "EXTRA '..' ENTRY"); 384 dirp->d_ino = 0; 385 if (reply("FIX") == 1) 386 ret |= ALTERED; 387 return (KEEPON | ret); 388 } 389 } 390 idesc->id_entryno++; 391 n = 0; 392 if (dirp->d_ino > maxino) { 393 fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE"); 394 n = reply("REMOVE"); 395 } else if (newinofmt && 396 ((dirp->d_ino == WINO && dirp->d_type != DT_WHT) || 397 (dirp->d_ino != WINO && dirp->d_type == DT_WHT))) { 398 fileerror(idesc->id_number, dirp->d_ino, "BAD WHITEOUT ENTRY"); 399 dirp->d_ino = WINO; 400 dirp->d_type = DT_WHT; 401 if (reply("FIX") == 1) 402 ret |= ALTERED; 403 } else { 404again: 405 switch (inoinfo(dirp->d_ino)->ino_state) { 406 case USTATE: 407 if (idesc->id_entryno <= 2) 408 break; 409 fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED"); 410 n = reply("REMOVE"); 411 break; 412 413 case DCLEAR: 414 case FCLEAR: 415 if (idesc->id_entryno <= 2) 416 break; 417 if (inoinfo(dirp->d_ino)->ino_state == FCLEAR) 418 errmsg = "DUP/BAD"; 419 else if (!preen && !usedsoftdep) 420 errmsg = "ZERO LENGTH DIRECTORY"; 421 else { 422 n = 1; 423 break; 424 } 425 fileerror(idesc->id_number, dirp->d_ino, errmsg); 426 if ((n = reply("REMOVE")) == 1) 427 break; 428 dp = ginode(dirp->d_ino); 429 inoinfo(dirp->d_ino)->ino_state = 430 (dp->di_mode & IFMT) == IFDIR ? DSTATE : FSTATE; 431 inoinfo(dirp->d_ino)->ino_linkcnt = dp->di_nlink; 432 goto again; 433 434 case DSTATE: 435 if (inoinfo(idesc->id_number)->ino_state == DFOUND) 436 inoinfo(dirp->d_ino)->ino_state = DFOUND; 437 /* fall through */ 438 439 case DFOUND: 440 inp = getinoinfo(dirp->d_ino); 441 if (inp->i_parent != 0 && idesc->id_entryno > 2) { 442 getpathname(pathbuf, idesc->id_number, 443 idesc->id_number); 444 getpathname(namebuf, dirp->d_ino, dirp->d_ino); 445 pwarn("%s%s%s %s %s\n", pathbuf, 446 (strcmp(pathbuf, "/") == 0 ? "" : "/"), 447 dirp->d_name, 448 "IS AN EXTRANEOUS HARD LINK TO DIRECTORY", 449 namebuf); 450 if (cursnapshot != 0) 451 break; 452 if (preen) { 453 printf(" (REMOVED)\n"); 454 n = 1; 455 break; 456 } 457 if ((n = reply("REMOVE")) == 1) 458 break; 459 } 460 if (idesc->id_entryno > 2) 461 inp->i_parent = idesc->id_number; 462 /* fall through */ 463 464 case FSTATE: 465 if (newinofmt && 466 dirp->d_type != inoinfo(dirp->d_ino)->ino_type) { 467 fileerror(idesc->id_number, dirp->d_ino, 468 "BAD TYPE VALUE"); 469 dirp->d_type = inoinfo(dirp->d_ino)->ino_type; 470 if (reply("FIX") == 1) 471 ret |= ALTERED; 472 } 473 inoinfo(dirp->d_ino)->ino_linkcnt--; 474 break; 475 476 default: 477 errx(EEXIT, "BAD STATE %d FOR INODE I=%d", 478 inoinfo(dirp->d_ino)->ino_state, dirp->d_ino); 479 } 480 } 481 if (n == 0) 482 return (ret|KEEPON); 483 dirp->d_ino = 0; 484 return (ret|KEEPON|ALTERED); 485} 486 487/* 488 * Routine to sort disk blocks. 489 */ 490static int 491blksort(arg1, arg2) 492 const void *arg1, *arg2; 493{ 494 495 return ((*(struct inoinfo **)arg1)->i_blks[0] - 496 (*(struct inoinfo **)arg2)->i_blks[0]); 497} 498