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: stable/11/sbin/fsck_ffs/pass2.c 344887 2019-03-07 13:53:59Z kib $"); 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(dp); 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(dp); 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(dp); 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; i < MIN(inp->i_numblks, NDADDR); i++) 186 DIP_SET(dp, di_db[i], inp->i_blks[i]); 187 if (inp->i_numblks > NDADDR) 188 for (i = 0; i < NIADDR; i++) 189 DIP_SET(dp, di_ib[i], inp->i_blks[NDADDR + i]); 190 curino.id_number = inp->i_number; 191 curino.id_parent = inp->i_parent; 192 (void)ckinode(dp, &curino); 193 } 194 /* 195 * Now that the parents of all directories have been found, 196 * make another pass to verify the value of `..' 197 */ 198 for (inpp = inpsort; inpp < inpend; inpp++) { 199 inp = *inpp; 200 if (inp->i_parent == 0 || inp->i_isize == 0) 201 continue; 202 if (inoinfo(inp->i_parent)->ino_state == DFOUND && 203 INO_IS_DUNFOUND(inp->i_number)) 204 inoinfo(inp->i_number)->ino_state = DFOUND; 205 if (inp->i_dotdot == inp->i_parent || 206 inp->i_dotdot == (ino_t)-1) 207 continue; 208 if (inp->i_dotdot == 0) { 209 inp->i_dotdot = inp->i_parent; 210 fileerror(inp->i_parent, inp->i_number, "MISSING '..'"); 211 if (reply("FIX") == 0) 212 continue; 213 (void)makeentry(inp->i_number, inp->i_parent, ".."); 214 inoinfo(inp->i_parent)->ino_linkcnt--; 215 continue; 216 } 217 /* 218 * Here we have: 219 * inp->i_number is directory with bad ".." in it. 220 * inp->i_dotdot is current value of "..". 221 * inp->i_parent is directory to which ".." should point. 222 */ 223 getpathname(pathbuf, inp->i_parent, inp->i_number); 224 printf("BAD INODE NUMBER FOR '..' in DIR I=%ju (%s)\n", 225 (uintmax_t)inp->i_number, pathbuf); 226 getpathname(pathbuf, inp->i_dotdot, inp->i_dotdot); 227 printf("CURRENTLY POINTS TO I=%ju (%s), ", 228 (uintmax_t)inp->i_dotdot, pathbuf); 229 getpathname(pathbuf, inp->i_parent, inp->i_parent); 230 printf("SHOULD POINT TO I=%ju (%s)", 231 (uintmax_t)inp->i_parent, pathbuf); 232 if (cursnapshot != 0) { 233 /* 234 * We need to: 235 * setcwd(inp->i_number); 236 * setdotdot(inp->i_dotdot, inp->i_parent); 237 */ 238 cmd.value = inp->i_number; 239 if (sysctlbyname("vfs.ffs.setcwd", 0, 0, 240 &cmd, sizeof cmd) == -1) { 241 /* kernel lacks support for these functions */ 242 printf(" (IGNORED)\n"); 243 continue; 244 } 245 cmd.value = inp->i_dotdot; /* verify same value */ 246 cmd.size = inp->i_parent; /* new parent */ 247 if (sysctlbyname("vfs.ffs.setdotdot", 0, 0, 248 &cmd, sizeof cmd) == -1) { 249 printf(" (FIX FAILED: %s)\n", strerror(errno)); 250 continue; 251 } 252 printf(" (FIXED)\n"); 253 inoinfo(inp->i_parent)->ino_linkcnt--; 254 inp->i_dotdot = inp->i_parent; 255 continue; 256 } 257 if (preen) 258 printf(" (FIXED)\n"); 259 else if (reply("FIX") == 0) 260 continue; 261 inoinfo(inp->i_dotdot)->ino_linkcnt++; 262 inoinfo(inp->i_parent)->ino_linkcnt--; 263 inp->i_dotdot = inp->i_parent; 264 (void)changeino(inp->i_number, "..", inp->i_parent); 265 } 266 /* 267 * Mark all the directories that can be found from the root. 268 */ 269 propagate(); 270} 271 272static int 273pass2check(struct inodesc *idesc) 274{ 275 struct direct *dirp = idesc->id_dirp; 276 char dirname[MAXPATHLEN + 1]; 277 struct inoinfo *inp; 278 int n, entrysize, ret = 0; 279 union dinode *dp; 280 const char *errmsg; 281 struct direct proto; 282 283 /* 284 * check for "." 285 */ 286 if (dirp->d_ino > maxino) 287 goto chk2; 288 if (idesc->id_entryno != 0) 289 goto chk1; 290 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") == 0) { 291 if (dirp->d_ino != idesc->id_number) { 292 direrror(idesc->id_number, "BAD INODE NUMBER FOR '.'"); 293 dirp->d_ino = idesc->id_number; 294 if (reply("FIX") == 1) 295 ret |= ALTERED; 296 } 297 if (dirp->d_type != DT_DIR) { 298 direrror(idesc->id_number, "BAD TYPE VALUE FOR '.'"); 299 dirp->d_type = DT_DIR; 300 if (reply("FIX") == 1) 301 ret |= ALTERED; 302 } 303 goto chk1; 304 } 305 direrror(idesc->id_number, "MISSING '.'"); 306 proto.d_ino = idesc->id_number; 307 proto.d_type = DT_DIR; 308 proto.d_namlen = 1; 309 (void)strcpy(proto.d_name, "."); 310 entrysize = DIRSIZ(0, &proto); 311 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") != 0) { 312 pfatal("CANNOT FIX, FIRST ENTRY IN DIRECTORY CONTAINS %s\n", 313 dirp->d_name); 314 } else if (dirp->d_reclen < entrysize) { 315 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '.'\n"); 316 } else if (dirp->d_reclen < 2 * entrysize) { 317 proto.d_reclen = dirp->d_reclen; 318 memmove(dirp, &proto, (size_t)entrysize); 319 if (reply("FIX") == 1) 320 ret |= ALTERED; 321 } else { 322 n = dirp->d_reclen - entrysize; 323 proto.d_reclen = entrysize; 324 memmove(dirp, &proto, (size_t)entrysize); 325 idesc->id_entryno++; 326 inoinfo(dirp->d_ino)->ino_linkcnt--; 327 dirp = (struct direct *)((char *)(dirp) + entrysize); 328 memset(dirp, 0, (size_t)n); 329 dirp->d_reclen = n; 330 if (reply("FIX") == 1) 331 ret |= ALTERED; 332 } 333chk1: 334 if (idesc->id_entryno > 1) 335 goto chk2; 336 inp = getinoinfo(idesc->id_number); 337 proto.d_ino = inp->i_parent; 338 proto.d_type = DT_DIR; 339 proto.d_namlen = 2; 340 (void)strcpy(proto.d_name, ".."); 341 entrysize = DIRSIZ(0, &proto); 342 if (idesc->id_entryno == 0) { 343 n = DIRSIZ(0, dirp); 344 if (dirp->d_reclen < n + entrysize) 345 goto chk2; 346 proto.d_reclen = dirp->d_reclen - n; 347 dirp->d_reclen = n; 348 idesc->id_entryno++; 349 inoinfo(dirp->d_ino)->ino_linkcnt--; 350 dirp = (struct direct *)((char *)(dirp) + n); 351 memset(dirp, 0, (size_t)proto.d_reclen); 352 dirp->d_reclen = proto.d_reclen; 353 } 354 if (dirp->d_ino != 0 && strcmp(dirp->d_name, "..") == 0) { 355 inp->i_dotdot = dirp->d_ino; 356 if (dirp->d_type != DT_DIR) { 357 direrror(idesc->id_number, "BAD TYPE VALUE FOR '..'"); 358 dirp->d_type = DT_DIR; 359 if (reply("FIX") == 1) 360 ret |= ALTERED; 361 } 362 goto chk2; 363 } 364 if (dirp->d_ino != 0 && strcmp(dirp->d_name, ".") != 0) { 365 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 366 pfatal("CANNOT FIX, SECOND ENTRY IN DIRECTORY CONTAINS %s\n", 367 dirp->d_name); 368 inp->i_dotdot = (ino_t)-1; 369 } else if (dirp->d_reclen < entrysize) { 370 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 371 pfatal("CANNOT FIX, INSUFFICIENT SPACE TO ADD '..'\n"); 372 inp->i_dotdot = (ino_t)-1; 373 } else if (inp->i_parent != 0) { 374 /* 375 * We know the parent, so fix now. 376 */ 377 inp->i_dotdot = inp->i_parent; 378 fileerror(inp->i_parent, idesc->id_number, "MISSING '..'"); 379 proto.d_reclen = dirp->d_reclen; 380 memmove(dirp, &proto, (size_t)entrysize); 381 if (reply("FIX") == 1) 382 ret |= ALTERED; 383 } 384 idesc->id_entryno++; 385 if (dirp->d_ino != 0) 386 inoinfo(dirp->d_ino)->ino_linkcnt--; 387 return (ret|KEEPON); 388chk2: 389 if (dirp->d_ino == 0) 390 return (ret|KEEPON); 391 if (dirp->d_namlen <= 2 && 392 dirp->d_name[0] == '.' && 393 idesc->id_entryno >= 2) { 394 if (dirp->d_namlen == 1) { 395 direrror(idesc->id_number, "EXTRA '.' ENTRY"); 396 dirp->d_ino = 0; 397 if (reply("FIX") == 1) 398 ret |= ALTERED; 399 return (KEEPON | ret); 400 } 401 if (dirp->d_name[1] == '.') { 402 direrror(idesc->id_number, "EXTRA '..' ENTRY"); 403 dirp->d_ino = 0; 404 if (reply("FIX") == 1) 405 ret |= ALTERED; 406 return (KEEPON | ret); 407 } 408 } 409 idesc->id_entryno++; 410 n = 0; 411 if (dirp->d_ino > maxino) { 412 fileerror(idesc->id_number, dirp->d_ino, "I OUT OF RANGE"); 413 n = reply("REMOVE"); 414 } else if (((dirp->d_ino == WINO && dirp->d_type != DT_WHT) || 415 (dirp->d_ino != WINO && dirp->d_type == DT_WHT))) { 416 fileerror(idesc->id_number, dirp->d_ino, "BAD WHITEOUT ENTRY"); 417 dirp->d_ino = WINO; 418 dirp->d_type = DT_WHT; 419 if (reply("FIX") == 1) 420 ret |= ALTERED; 421 } else { 422again: 423 switch (inoinfo(dirp->d_ino)->ino_state) { 424 case USTATE: 425 if (idesc->id_entryno <= 2) 426 break; 427 fileerror(idesc->id_number, dirp->d_ino, "UNALLOCATED"); 428 n = reply("REMOVE"); 429 break; 430 431 case DCLEAR: 432 case FCLEAR: 433 if (idesc->id_entryno <= 2) 434 break; 435 if (inoinfo(dirp->d_ino)->ino_state == FCLEAR) 436 errmsg = "DUP/BAD"; 437 else if (!preen && !usedsoftdep) 438 errmsg = "ZERO LENGTH DIRECTORY"; 439 else if (cursnapshot == 0) { 440 n = 1; 441 break; 442 } else { 443 getpathname(dirname, idesc->id_number, 444 dirp->d_ino); 445 pwarn("ZERO LENGTH DIRECTORY %s I=%ju", 446 dirname, (uintmax_t)dirp->d_ino); 447 /* 448 * We need to: 449 * setcwd(idesc->id_parent); 450 * rmdir(dirp->d_name); 451 */ 452 cmd.value = idesc->id_number; 453 if (sysctlbyname("vfs.ffs.setcwd", 0, 0, 454 &cmd, sizeof cmd) == -1) { 455 /* kernel lacks support */ 456 printf(" (IGNORED)\n"); 457 n = 1; 458 break; 459 } 460 if (rmdir(dirp->d_name) == -1) { 461 printf(" (REMOVAL FAILED: %s)\n", 462 strerror(errno)); 463 n = 1; 464 break; 465 } 466 /* ".." reference to parent is removed */ 467 inoinfo(idesc->id_number)->ino_linkcnt--; 468 printf(" (REMOVED)\n"); 469 break; 470 } 471 fileerror(idesc->id_number, dirp->d_ino, errmsg); 472 if ((n = reply("REMOVE")) == 1) 473 break; 474 dp = ginode(dirp->d_ino); 475 inoinfo(dirp->d_ino)->ino_state = 476 (DIP(dp, di_mode) & IFMT) == IFDIR ? DSTATE : FSTATE; 477 inoinfo(dirp->d_ino)->ino_linkcnt = DIP(dp, di_nlink); 478 goto again; 479 480 case DSTATE: 481 case DZLINK: 482 if (inoinfo(idesc->id_number)->ino_state == DFOUND) 483 inoinfo(dirp->d_ino)->ino_state = DFOUND; 484 /* FALLTHROUGH */ 485 486 case DFOUND: 487 inp = getinoinfo(dirp->d_ino); 488 if (idesc->id_entryno > 2) { 489 if (inp->i_parent == 0) 490 inp->i_parent = idesc->id_number; 491 else if ((n = fix_extraneous(inp, idesc)) == 1) 492 break; 493 } 494 /* FALLTHROUGH */ 495 496 case FSTATE: 497 case FZLINK: 498 if (dirp->d_type != inoinfo(dirp->d_ino)->ino_type) { 499 fileerror(idesc->id_number, dirp->d_ino, 500 "BAD TYPE VALUE"); 501 dirp->d_type = inoinfo(dirp->d_ino)->ino_type; 502 if (reply("FIX") == 1) 503 ret |= ALTERED; 504 } 505 inoinfo(dirp->d_ino)->ino_linkcnt--; 506 break; 507 508 default: 509 errx(EEXIT, "BAD STATE %d FOR INODE I=%ju", 510 inoinfo(dirp->d_ino)->ino_state, 511 (uintmax_t)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 = strchr(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