pass2.c revision 267654
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 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#if 0 31#ifndef lint 32static const char sccsid[] = "@(#)pass2.c 8.9 (Berkeley) 4/28/95"; 33#endif /* not lint */ 34#endif 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: releng/9.3/sbin/fsck_ffs/pass2.c 221110 2011-04-27 02:55:03Z des $"); 37 38#include <sys/param.h> 39#include <sys/sysctl.h> 40 41#include <ufs/ufs/dinode.h> 42#include <ufs/ufs/dir.h> 43#include <ufs/ffs/fs.h> 44 45#include <err.h> 46#include <errno.h> 47#include <stdint.h> 48#include <string.h> 49 50#include "fsck.h" 51 52#define MINDIRSIZE (sizeof (struct dirtemplate)) 53 54static int fix_extraneous(struct inoinfo *, struct inodesc *); 55static int deleteentry(struct inodesc *); 56static int blksort(const void *, const void *); 57static int pass2check(struct inodesc *); 58 59void 60pass2(void) 61{ 62 union dinode *dp; 63 struct inoinfo **inpp, *inp; 64 struct inoinfo **inpend; 65 struct inodesc curino; 66 union dinode dino; 67 int i; 68 char pathbuf[MAXPATHLEN + 1]; 69 70 switch (inoinfo(ROOTINO)->ino_state) { 71 72 case USTATE: 73 pfatal("ROOT INODE UNALLOCATED"); 74 if (reply("ALLOCATE") == 0) { 75 ckfini(0); 76 exit(EEXIT); 77 } 78 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 79 errx(EEXIT, "CANNOT ALLOCATE ROOT INODE"); 80 break; 81 82 case DCLEAR: 83 pfatal("DUPS/BAD IN ROOT INODE"); 84 if (reply("REALLOCATE")) { 85 freeino(ROOTINO); 86 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 87 errx(EEXIT, "CANNOT ALLOCATE ROOT INODE"); 88 break; 89 } 90 if (reply("CONTINUE") == 0) { 91 ckfini(0); 92 exit(EEXIT); 93 } 94 break; 95 96 case FSTATE: 97 case FCLEAR: 98 case FZLINK: 99 pfatal("ROOT INODE NOT DIRECTORY"); 100 if (reply("REALLOCATE")) { 101 freeino(ROOTINO); 102 if (allocdir(ROOTINO, ROOTINO, 0755) != ROOTINO) 103 errx(EEXIT, "CANNOT ALLOCATE ROOT INODE"); 104 break; 105 } 106 if (reply("FIX") == 0) { 107 ckfini(0); 108 exit(EEXIT); 109 } 110 dp = ginode(ROOTINO); 111 DIP_SET(dp, di_mode, DIP(dp, di_mode) & ~IFMT); 112 DIP_SET(dp, di_mode, DIP(dp, di_mode) | IFDIR); 113 inodirty(); 114 break; 115 116 case DSTATE: 117 case DZLINK: 118 break; 119 120 default: 121 errx(EEXIT, "BAD STATE %d FOR ROOT INODE", 122 inoinfo(ROOTINO)->ino_state); 123 } 124 inoinfo(ROOTINO)->ino_state = DFOUND; 125 inoinfo(WINO)->ino_state = FSTATE; 126 inoinfo(WINO)->ino_type = DT_WHT; 127 /* 128 * Sort the directory list into disk block order. 129 */ 130 qsort((char *)inpsort, (size_t)inplast, sizeof *inpsort, blksort); 131 /* 132 * Check the integrity of each directory. 133 */ 134 memset(&curino, 0, sizeof(struct inodesc)); 135 curino.id_type = DATA; 136 curino.id_func = pass2check; 137 inpend = &inpsort[inplast]; 138 for (inpp = inpsort; inpp < inpend; inpp++) { 139 if (got_siginfo) { 140 printf("%s: phase 2: dir %td of %d (%d%%)\n", cdevname, 141 inpp - inpsort, (int)inplast, 142 (int)((inpp - inpsort) * 100 / inplast)); 143 got_siginfo = 0; 144 } 145 if (got_sigalarm) { 146 setproctitle("%s p2 %d%%", cdevname, 147 (int)((inpp - inpsort) * 100 / inplast)); 148 got_sigalarm = 0; 149 } 150 inp = *inpp; 151 if (inp->i_isize == 0) 152 continue; 153 if (inp->i_isize < MINDIRSIZE) { 154 direrror(inp->i_number, "DIRECTORY TOO SHORT"); 155 inp->i_isize = roundup(MINDIRSIZE, DIRBLKSIZ); 156 if (reply("FIX") == 1) { 157 dp = ginode(inp->i_number); 158 DIP_SET(dp, di_size, inp->i_isize); 159 inodirty(); 160 } 161 } else if ((inp->i_isize & (DIRBLKSIZ - 1)) != 0) { 162 getpathname(pathbuf, inp->i_number, inp->i_number); 163 if (usedsoftdep) 164 pfatal("%s %s: LENGTH %jd NOT MULTIPLE OF %d", 165 "DIRECTORY", pathbuf, 166 (intmax_t)inp->i_isize, DIRBLKSIZ); 167 else 168 pwarn("%s %s: LENGTH %jd NOT MULTIPLE OF %d", 169 "DIRECTORY", pathbuf, 170 (intmax_t)inp->i_isize, DIRBLKSIZ); 171 if (preen) 172 printf(" (ADJUSTED)\n"); 173 inp->i_isize = roundup(inp->i_isize, DIRBLKSIZ); 174 if (preen || reply("ADJUST") == 1) { 175 dp = ginode(inp->i_number); 176 DIP_SET(dp, di_size, 177 roundup(inp->i_isize, DIRBLKSIZ)); 178 inodirty(); 179 } 180 } 181 dp = &dino; 182 memset(dp, 0, sizeof(struct ufs2_dinode)); 183 DIP_SET(dp, di_mode, IFDIR); 184 DIP_SET(dp, di_size, inp->i_isize); 185 for (i = 0; 186 i < (inp->i_numblks<NDADDR ? inp->i_numblks : NDADDR); 187 i++) 188 DIP_SET(dp, di_db[i], inp->i_blks[i]); 189 if (inp->i_numblks > NDADDR) 190 for (i = 0; i < NIADDR; i++) 191 DIP_SET(dp, di_ib[i], inp->i_blks[NDADDR + i]); 192 curino.id_number = inp->i_number; 193 curino.id_parent = inp->i_parent; 194 (void)ckinode(dp, &curino); 195 } 196 /* 197 * Now that the parents of all directories have been found, 198 * make another pass to verify the value of `..' 199 */ 200 for (inpp = inpsort; inpp < inpend; inpp++) { 201 inp = *inpp; 202 if (inp->i_parent == 0 || inp->i_isize == 0) 203 continue; 204 if (inoinfo(inp->i_parent)->ino_state == DFOUND && 205 INO_IS_DUNFOUND(inp->i_number)) 206 inoinfo(inp->i_number)->ino_state = DFOUND; 207 if (inp->i_dotdot == inp->i_parent || 208 inp->i_dotdot == (ino_t)-1) 209 continue; 210 if (inp->i_dotdot == 0) { 211 inp->i_dotdot = inp->i_parent; 212 fileerror(inp->i_parent, inp->i_number, "MISSING '..'"); 213 if (reply("FIX") == 0) 214 continue; 215 (void)makeentry(inp->i_number, inp->i_parent, ".."); 216 inoinfo(inp->i_parent)->ino_linkcnt--; 217 continue; 218 } 219 /* 220 * Here we have: 221 * inp->i_number is directory with bad ".." in it. 222 * inp->i_dotdot is current value of "..". 223 * inp->i_parent is directory to which ".." should point. 224 */ 225 getpathname(pathbuf, inp->i_parent, inp->i_number); 226 printf("BAD INODE NUMBER FOR '..' in DIR I=%d (%s)\n", 227 inp->i_number, pathbuf); 228 getpathname(pathbuf, inp->i_dotdot, inp->i_dotdot); 229 printf("CURRENTLY POINTS TO I=%d (%s), ", inp->i_dotdot, 230 pathbuf); 231 getpathname(pathbuf, inp->i_parent, inp->i_parent); 232 printf("SHOULD POINT TO I=%d (%s)", inp->i_parent, pathbuf); 233 if (cursnapshot != 0) { 234 /* 235 * We need to: 236 * setcwd(inp->i_number); 237 * setdotdot(inp->i_dotdot, inp->i_parent); 238 */ 239 cmd.value = inp->i_number; 240 if (sysctlbyname("vfs.ffs.setcwd", 0, 0, 241 &cmd, sizeof cmd) == -1) { 242 /* kernel lacks support for these functions */ 243 printf(" (IGNORED)\n"); 244 continue; 245 } 246 cmd.value = inp->i_dotdot; /* verify same value */ 247 cmd.size = inp->i_parent; /* new parent */ 248 if (sysctlbyname("vfs.ffs.setdotdot", 0, 0, 249 &cmd, sizeof cmd) == -1) { 250 printf(" (FIX FAILED: %s)\n", strerror(errno)); 251 continue; 252 } 253 printf(" (FIXED)\n"); 254 inoinfo(inp->i_parent)->ino_linkcnt--; 255 inp->i_dotdot = inp->i_parent; 256 continue; 257 } 258 if (preen) 259 printf(" (FIXED)\n"); 260 else if (reply("FIX") == 0) 261 continue; 262 inoinfo(inp->i_dotdot)->ino_linkcnt++; 263 inoinfo(inp->i_parent)->ino_linkcnt--; 264 inp->i_dotdot = inp->i_parent; 265 (void)changeino(inp->i_number, "..", inp->i_parent); 266 } 267 /* 268 * Mark all the directories that can be found from the root. 269 */ 270 propagate(); 271} 272 273static int 274pass2check(struct inodesc *idesc) 275{ 276 struct direct *dirp = idesc->id_dirp; 277 char dirname[MAXPATHLEN + 1]; 278 struct inoinfo *inp; 279 int n, entrysize, ret = 0; 280 union dinode *dp; 281 const char *errmsg; 282 struct direct proto; 283 284 /* 285 * check for "." 286 */ 287 if (dirp->d_ino > maxino) 288 goto chk2; 289 if (idesc->id_entryno != 0) 290 goto chk1; 291 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) { 292 if (dirp->d_ino != idesc->id_number) { 293 direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'"); 294 dirp->d_ino = idesc->id_number; 295 if (reply("FIX") == 1) 296 ret |= ALTERED; 297 } 298 if (dirp->d_type != DT_DIR) { 299 direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'"); 300 dirp->d_type = DT_DIR; 301 if (reply("FIX") == 1) 302 ret |= ALTERED; 303 } 304 goto chk1; 305 } 306 direrror(idesc->id_number, "MISSING '.'"); 307 proto.d_ino = idesc->id_number; 308 proto.d_type = DT_DIR; 309 proto.d_namlen = 1; 310 (void)strcpy(proto.d_name, "."); 311 entrysize = DIRSIZ(0, &proto); 312 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) { 313 pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n", 314 dirp->d_name); 315 } else if (dirp->d_reclen < entrysize) { 316 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n"); 317 } else if (dirp->d_reclen < 2 * entrysize) { 318 proto.d_reclen = dirp->d_reclen; 319 memmove(dirp, &proto, (size_t)entrysize); 320 if (reply("FIX") == 1) 321 ret |= ALTERED; 322 } else { 323 n = dirp->d_reclen - entrysize; 324 proto.d_reclen = entrysize; 325 memmove(dirp, &proto, (size_t)entrysize); 326 idesc->id_entryno++; 327 inoinfo(dirp->d_ino)->ino_linkcnt--; 328 dirp = (struct direct *)((char *)(dirp) + entrysize); 329 memset(dirp, 0, (size_t)n); 330 dirp->d_reclen = n; 331 if (reply("FIX") == 1) 332 ret |= ALTERED; 333 } 334chk1: 335 if (idesc->id_entryno > 1) 336 goto chk2; 337 inp = getinoinfo(idesc->id_number); 338 proto.d_ino = inp->i_parent; 339 proto.d_type = DT_DIR; 340 proto.d_namlen = 2; 341 (void)strcpy(proto.d_name, ".."); 342 entrysize = DIRSIZ(0, &proto); 343 if (idesc->id_entryno == 0) { 344 n = DIRSIZ(0, dirp); 345 if (dirp->d_reclen < n + entrysize) 346 goto chk2; 347 proto.d_reclen = dirp->d_reclen - n; 348 dirp->d_reclen = n; 349 idesc->id_entryno++; 350 inoinfo(dirp->d_ino)->ino_linkcnt--; 351 dirp = (struct direct *)((char *)(dirp) + n); 352 memset(dirp, 0, (size_t)proto.d_reclen); 353 dirp->d_reclen = proto.d_reclen; 354 } 355 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) { 356 inp->i_dotdot = dirp->d_ino; 357 if (dirp->d_type != DT_DIR) { 358 direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'"); 359 dirp->d_type = DT_DIR; 360 if (reply("FIX") == 1) 361 ret |= ALTERED; 362 } 363 goto chk2; 364 } 365 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) { 366 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 367 pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n", 368 dirp->d_name); 369 inp->i_dotdot = (ino_t)-1; 370 } else if (dirp->d_reclen < entrysize) { 371 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 372 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n"); 373 inp->i_dotdot = (ino_t)-1; 374 } else if (inp->i_parent != 0) { 375 /* 376 * We know the parent, so fix now. 377 */ 378 inp->i_dotdot = inp->i_parent; 379 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 380 proto.d_reclen = dirp->d_reclen; 381 memmove(dirp, &proto, (size_t)entrysize); 382 if (reply("FIX") == 1) 383 ret |= ALTERED; 384 } 385 idesc->id_entryno++; 386 if (dirp->d_ino != 0) 387 inoinfo(dirp->d_ino)->ino_linkcnt--; 388 return (ret|KEEPON); 389chk2: 390 if (dirp->d_ino == 0) 391 return (ret|KEEPON); 392 if (dirp->d_namlen <= 2 && 393 dirp->d_name[0] == '.' && 394 idesc->id_entryno >= 2) { 395 if (dirp->d_namlen == 1) { 396 direrror(idesc->id_number, "EXTRA '.' ENTRY"); 397 dirp->d_ino = 0; 398 if (reply("FIX") == 1) 399 ret |= ALTERED; 400 return (KEEPON | ret); 401 } 402 if (dirp->d_name[1] == '.') { 403 direrror(idesc->id_number, "EXTRA '..' ENTRY"); 404 dirp->d_ino = 0; 405 if (reply("FIX") == 1) 406 ret |= ALTERED; 407 return (KEEPON | ret); 408 } 409 } 410 idesc->id_entryno++; 411 n = 0; 412 if (dirp->d_ino > maxino) { 413 fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE"); 414 n = reply("REMOVE"); 415 } else if (((dirp->d_ino == WINO && dirp->d_type != DT_WHT) || 416 (dirp->d_ino != WINO && dirp->d_type == DT_WHT))) { 417 fileerror(idesc->id_number, dirp->d_ino, "BAD WHITEOUT ENTRY"); 418 dirp->d_ino = WINO; 419 dirp->d_type = DT_WHT; 420 if (reply("FIX") == 1) 421 ret |= ALTERED; 422 } else { 423again: 424 switch (inoinfo(dirp->d_ino)->ino_state) { 425 case USTATE: 426 if (idesc->id_entryno <= 2) 427 break; 428 fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED"); 429 n = reply("REMOVE"); 430 break; 431 432 case DCLEAR: 433 case FCLEAR: 434 if (idesc->id_entryno <= 2) 435 break; 436 if (inoinfo(dirp->d_ino)->ino_state == FCLEAR) 437 errmsg = "DUP/BAD"; 438 else if (!preen && !usedsoftdep) 439 errmsg = "ZERO LENGTH DIRECTORY"; 440 else if (cursnapshot == 0) { 441 n = 1; 442 break; 443 } else { 444 getpathname(dirname, idesc->id_number, 445 dirp->d_ino); 446 pwarn("ZERO LENGTH DIRECTORY %s I=%d", 447 dirname, dirp->d_ino); 448 /* 449 * We need to: 450 * setcwd(idesc->id_parent); 451 * rmdir(dirp->d_name); 452 */ 453 cmd.value = idesc->id_number; 454 if (sysctlbyname("vfs.ffs.setcwd", 0, 0, 455 &cmd, sizeof cmd) == -1) { 456 /* kernel lacks support */ 457 printf(" (IGNORED)\n"); 458 n = 1; 459 break; 460 } 461 if (rmdir(dirp->d_name) == -1) { 462 printf(" (REMOVAL FAILED: %s)\n", 463 strerror(errno)); 464 n = 1; 465 break; 466 } 467 /* ".." reference to parent is removed */ 468 inoinfo(idesc->id_number)->ino_linkcnt--; 469 printf(" (REMOVED)\n"); 470 break; 471 } 472 fileerror(idesc->id_number, dirp->d_ino, errmsg); 473 if ((n = reply("REMOVE")) == 1) 474 break; 475 dp = ginode(dirp->d_ino); 476 inoinfo(dirp->d_ino)->ino_state = 477 (DIP(dp, di_mode) & IFMT) == IFDIR ? DSTATE : FSTATE; 478 inoinfo(dirp->d_ino)->ino_linkcnt = DIP(dp, di_nlink); 479 goto again; 480 481 case DSTATE: 482 case DZLINK: 483 if (inoinfo(idesc->id_number)->ino_state == DFOUND) 484 inoinfo(dirp->d_ino)->ino_state = DFOUND; 485 /* FALLTHROUGH */ 486 487 case DFOUND: 488 inp = getinoinfo(dirp->d_ino); 489 if (idesc->id_entryno > 2) { 490 if (inp->i_parent == 0) 491 inp->i_parent = idesc->id_number; 492 else if ((n = fix_extraneous(inp, idesc)) == 1) 493 break; 494 } 495 /* FALLTHROUGH */ 496 497 case FSTATE: 498 case FZLINK: 499 if (dirp->d_type != inoinfo(dirp->d_ino)->ino_type) { 500 fileerror(idesc->id_number, dirp->d_ino, 501 "BAD TYPE VALUE"); 502 dirp->d_type = inoinfo(dirp->d_ino)->ino_type; 503 if (reply("FIX") == 1) 504 ret |= ALTERED; 505 } 506 inoinfo(dirp->d_ino)->ino_linkcnt--; 507 break; 508 509 default: 510 errx(EEXIT, "BAD STATE %d FOR INODE I=%d", 511 inoinfo(dirp->d_ino)->ino_state, dirp->d_ino); 512 } 513 } 514 if (n == 0) 515 return (ret|KEEPON); 516 dirp->d_ino = 0; 517 return (ret|KEEPON|ALTERED); 518} 519 520static int 521fix_extraneous(struct inoinfo *inp, struct inodesc *idesc) 522{ 523 char *cp; 524 struct inodesc dotdesc; 525 char oldname[MAXPATHLEN + 1]; 526 char newname[MAXPATHLEN + 1]; 527 528 /* 529 * If we have not yet found "..", look it up now so we know 530 * which inode the directory itself believes is its parent. 531 */ 532 if (inp->i_dotdot == 0) { 533 memset(&dotdesc, 0, sizeof(struct inodesc)); 534 dotdesc.id_type = DATA; 535 dotdesc.id_number = idesc->id_dirp->d_ino; 536 dotdesc.id_func = findino; 537 dotdesc.id_name = strdup(".."); 538 if ((ckinode(ginode(dotdesc.id_number), &dotdesc) & FOUND)) 539 inp->i_dotdot = dotdesc.id_parent; 540 } 541 /* 542 * We have the previously found old name (inp->i_parent) and the 543 * just found new name (idesc->id_number). We have five cases: 544 * 1) ".." is missing - can remove either name, choose to delete 545 * new one and let fsck create ".." pointing to old name. 546 * 2) Both new and old are in same directory, choose to delete 547 * the new name and let fsck fix ".." if it is wrong. 548 * 3) ".." does not point to the new name, so delete it and let 549 * fsck fix ".." to point to the old one if it is wrong. 550 * 4) ".." points to the old name only, so delete the new one. 551 * 5) ".." points to the new name only, so delete the old one. 552 * 553 * For cases 1-4 we eliminate the new name; 554 * for case 5 we eliminate the old name. 555 */ 556 if (inp->i_dotdot == 0 || /* Case 1 */ 557 idesc->id_number == inp->i_parent || /* Case 2 */ 558 inp->i_dotdot != idesc->id_number || /* Case 3 */ 559 inp->i_dotdot == inp->i_parent) { /* Case 4 */ 560 getpathname(newname, idesc->id_number, idesc->id_number); 561 if (strcmp(newname, "/") != 0) 562 strcat (newname, "/"); 563 strcat(newname, idesc->id_dirp->d_name); 564 getpathname(oldname, inp->i_number, inp->i_number); 565 pwarn("%s IS AN EXTRANEOUS HARD LINK TO DIRECTORY %s", 566 newname, oldname); 567 if (cursnapshot != 0) { 568 /* 569 * We need to 570 * setcwd(idesc->id_number); 571 * unlink(idesc->id_dirp->d_name); 572 */ 573 cmd.value = idesc->id_number; 574 if (sysctlbyname("vfs.ffs.setcwd", 0, 0, 575 &cmd, sizeof cmd) == -1) { 576 printf(" (IGNORED)\n"); 577 return (0); 578 } 579 cmd.value = (intptr_t)idesc->id_dirp->d_name; 580 cmd.size = inp->i_number; /* verify same name */ 581 if (sysctlbyname("vfs.ffs.unlink", 0, 0, 582 &cmd, sizeof cmd) == -1) { 583 printf(" (UNLINK FAILED: %s)\n", 584 strerror(errno)); 585 return (0); 586 } 587 printf(" (REMOVED)\n"); 588 return (0); 589 } 590 if (preen) { 591 printf(" (REMOVED)\n"); 592 return (1); 593 } 594 return (reply("REMOVE")); 595 } 596 /* 597 * None of the first four cases above, so must be case (5). 598 * Eliminate the old name and make the new the name the parent. 599 */ 600 getpathname(oldname, inp->i_parent, inp->i_number); 601 getpathname(newname, inp->i_number, inp->i_number); 602 pwarn("%s IS AN EXTRANEOUS HARD LINK TO DIRECTORY %s", oldname, 603 newname); 604 if (cursnapshot != 0) { 605 /* 606 * We need to 607 * setcwd(inp->i_parent); 608 * unlink(last component of oldname pathname); 609 */ 610 cmd.value = inp->i_parent; 611 if (sysctlbyname("vfs.ffs.setcwd", 0, 0, 612 &cmd, sizeof cmd) == -1) { 613 printf(" (IGNORED)\n"); 614 return (0); 615 } 616 if ((cp = rindex(oldname, '/')) == NULL) { 617 printf(" (IGNORED)\n"); 618 return (0); 619 } 620 cmd.value = (intptr_t)(cp + 1); 621 cmd.size = inp->i_number; /* verify same name */ 622 if (sysctlbyname("vfs.ffs.unlink", 0, 0, 623 &cmd, sizeof cmd) == -1) { 624 printf(" (UNLINK FAILED: %s)\n", 625 strerror(errno)); 626 return (0); 627 } 628 printf(" (REMOVED)\n"); 629 inp->i_parent = idesc->id_number; /* reparent to correct dir */ 630 return (0); 631 } 632 if (!preen && !reply("REMOVE")) 633 return (0); 634 memset(&dotdesc, 0, sizeof(struct inodesc)); 635 dotdesc.id_type = DATA; 636 dotdesc.id_number = inp->i_parent; /* directory in which name appears */ 637 dotdesc.id_parent = inp->i_number; /* inode number in entry to delete */ 638 dotdesc.id_func = deleteentry; 639 if ((ckinode(ginode(dotdesc.id_number), &dotdesc) & FOUND) && preen) 640 printf(" (REMOVED)\n"); 641 inp->i_parent = idesc->id_number; /* reparent to correct directory */ 642 inoinfo(inp->i_number)->ino_linkcnt++; /* name gone, return reference */ 643 return (0); 644} 645 646static int 647deleteentry(struct inodesc *idesc) 648{ 649 struct direct *dirp = idesc->id_dirp; 650 651 if (idesc->id_entryno++ < 2 || dirp->d_ino != idesc->id_parent) 652 return (KEEPON); 653 dirp->d_ino = 0; 654 return (ALTERED|STOP|FOUND); 655} 656 657/* 658 * Routine to sort disk blocks. 659 */ 660static int 661blksort(const void *arg1, const void *arg2) 662{ 663 664 return ((*(struct inoinfo * const *)arg1)->i_blks[0] - 665 (*(struct inoinfo * const *)arg2)->i_blks[0]); 666} 667