1 /* $OpenBSD: inode.c,v 1.47 2015/12/10 17:26:59 mmcc Exp $ */ 2 /* $NetBSD: inode.c,v 1.23 1996/10/11 20:15:47 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1980, 1986, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> /* setbit btodb */ 34 #include <sys/time.h> 35 #include <ufs/ufs/dinode.h> 36 #include <ufs/ufs/dir.h> 37 #include <ufs/ffs/fs.h> 38 #ifndef SMALL 39 #include <pwd.h> 40 #endif 41 #include <stdio.h> 42 #include <stdlib.h> 43 #include <string.h> 44 #include <unistd.h> 45 #include <limits.h> 46 47 #include "fsck.h" 48 #include "fsutil.h" 49 #include "extern.h" 50 51 #define MINIMUM(a, b) (((a) < (b)) ? (a) : (b)) 52 #define MAXIMUM(a, b) (((a) > (b)) ? (a) : (b)) 53 54 static ino_t startinum; 55 56 static int iblock(struct inodesc *, long, off_t); 57 58 int 59 ckinode(union dinode *dp, struct inodesc *idesc) 60 { 61 long ret, ndb, offset; 62 union dinode dino; 63 off_t sizepb, remsize; 64 mode_t mode; 65 int i; 66 char pathbuf[PATH_MAX + 1]; 67 68 if (idesc->id_fix != IGNORE) 69 idesc->id_fix = DONTKNOW; 70 idesc->id_entryno = 0; 71 idesc->id_filesize = DIP(dp, di_size); 72 mode = DIP(dp, di_mode) & IFMT; 73 if (mode == IFBLK || mode == IFCHR || (mode == IFLNK && 74 (DIP(dp, di_size) < sblock.fs_maxsymlinklen || 75 (sblock.fs_maxsymlinklen == 0 && DIP(dp, di_blocks) == 0)))) 76 return (KEEPON); 77 if (sblock.fs_magic == FS_UFS1_MAGIC) 78 dino.dp1 = dp->dp1; 79 else 80 dino.dp2 = dp->dp2; 81 ndb = howmany(DIP(&dino, di_size), sblock.fs_bsize); 82 for (i = 0; i < NDADDR; i++) { 83 if (--ndb == 0 && (offset = blkoff(&sblock, 84 DIP(&dino, di_size))) != 0) 85 idesc->id_numfrags = 86 numfrags(&sblock, fragroundup(&sblock, offset)); 87 else 88 idesc->id_numfrags = sblock.fs_frag; 89 if (DIP(&dino, di_db[i]) == 0) { 90 if (idesc->id_type == DATA && ndb >= 0) { 91 /* An empty block in a directory XXX */ 92 getpathname(pathbuf, sizeof pathbuf, 93 idesc->id_number, idesc->id_number); 94 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS", 95 pathbuf); 96 if (reply("ADJUST LENGTH") == 1) { 97 dp = ginode(idesc->id_number); 98 DIP_SET(dp, di_size, 99 i * sblock.fs_bsize); 100 printf( 101 "YOU MUST RERUN FSCK AFTERWARDS\n"); 102 rerun = 1; 103 inodirty(); 104 } 105 } 106 continue; 107 } 108 idesc->id_blkno = DIP(&dino, di_db[i]); 109 if (idesc->id_type == ADDR) 110 ret = (*idesc->id_func)(idesc); 111 else 112 ret = dirscan(idesc); 113 if (ret & STOP) 114 return (ret); 115 } 116 idesc->id_numfrags = sblock.fs_frag; 117 remsize = DIP(&dino, di_size) - sblock.fs_bsize * NDADDR; 118 sizepb = sblock.fs_bsize; 119 for (i = 0; i < NIADDR; i++) { 120 if (DIP(&dino, di_ib[i])) { 121 idesc->id_blkno = DIP(&dino, di_ib[i]); 122 ret = iblock(idesc, i + 1, remsize); 123 if (ret & STOP) 124 return (ret); 125 } else { 126 if (idesc->id_type == DATA && remsize > 0) { 127 /* An empty block in a directory XXX */ 128 getpathname(pathbuf, sizeof pathbuf, 129 idesc->id_number, idesc->id_number); 130 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS", 131 pathbuf); 132 if (reply("ADJUST LENGTH") == 1) { 133 dp = ginode(idesc->id_number); 134 DIP_SET(dp, di_size, 135 DIP(dp, di_size) - remsize); 136 remsize = 0; 137 printf( 138 "YOU MUST RERUN FSCK AFTERWARDS\n"); 139 rerun = 1; 140 inodirty(); 141 break; 142 } 143 } 144 } 145 sizepb *= NINDIR(&sblock); 146 remsize -= sizepb; 147 } 148 return (KEEPON); 149 } 150 151 static int 152 iblock(struct inodesc *idesc, long ilevel, off_t isize) 153 { 154 struct bufarea *bp; 155 int i, n, (*func)(struct inodesc *), nif; 156 off_t sizepb; 157 char buf[BUFSIZ]; 158 char pathbuf[PATH_MAX + 1]; 159 union dinode *dp; 160 161 if (idesc->id_type == ADDR) { 162 func = idesc->id_func; 163 if (((n = (*func)(idesc)) & KEEPON) == 0) 164 return (n); 165 } else 166 func = dirscan; 167 if (isize < 0 || chkrange(idesc->id_blkno, idesc->id_numfrags)) 168 return (SKIP); 169 bp = getdatablk(idesc->id_blkno, sblock.fs_bsize); 170 ilevel--; 171 for (sizepb = sblock.fs_bsize, i = 0; i < ilevel; i++) 172 sizepb *= NINDIR(&sblock); 173 if (howmany(isize, sizepb) > NINDIR(&sblock)) 174 nif = NINDIR(&sblock); 175 else 176 nif = howmany(isize, sizepb); 177 if (idesc->id_func == pass1check && nif < NINDIR(&sblock)) { 178 for (i = nif; i < NINDIR(&sblock); i++) { 179 if (IBLK(bp, i) == 0) 180 continue; 181 (void)snprintf(buf, sizeof buf, 182 "PARTIALLY TRUNCATED INODE I=%llu", 183 (unsigned long long)idesc->id_number); 184 if (preen) 185 pfatal("%s", buf); 186 else if (dofix(idesc, buf)) { 187 IBLK_SET(bp, i, 0); 188 dirty(bp); 189 } 190 } 191 flush(fswritefd, bp); 192 } 193 for (i = 0; i < nif; i++) { 194 if (IBLK(bp, i)) { 195 idesc->id_blkno = IBLK(bp, i); 196 if (ilevel == 0) 197 n = (*func)(idesc); 198 else 199 n = iblock(idesc, ilevel, isize); 200 if (n & STOP) { 201 bp->b_flags &= ~B_INUSE; 202 return (n); 203 } 204 } else { 205 if (idesc->id_type == DATA && isize > 0) { 206 /* An empty block in a directory XXX */ 207 getpathname(pathbuf, sizeof pathbuf, 208 idesc->id_number, idesc->id_number); 209 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS", 210 pathbuf); 211 if (reply("ADJUST LENGTH") == 1) { 212 dp = ginode(idesc->id_number); 213 DIP_SET(dp, di_size, 214 DIP(dp, di_size) - isize); 215 isize = 0; 216 printf( 217 "YOU MUST RERUN FSCK AFTERWARDS\n"); 218 rerun = 1; 219 inodirty(); 220 bp->b_flags &= ~B_INUSE; 221 return(STOP); 222 } 223 } 224 } 225 isize -= sizepb; 226 } 227 bp->b_flags &= ~B_INUSE; 228 return (KEEPON); 229 } 230 231 /* 232 * Check that a block in a legal block number. 233 * Return 0 if in range, 1 if out of range. 234 */ 235 int 236 chkrange(daddr_t blk, int cnt) 237 { 238 int c; 239 240 if (cnt <= 0 || blk <= 0 || blk > maxfsblock || 241 cnt - 1 > maxfsblock - blk) 242 return (1); 243 if (cnt > sblock.fs_frag || 244 fragnum(&sblock, blk) + cnt > sblock.fs_frag) { 245 if (debug) 246 printf("bad size: blk %lld, offset %lld, size %d\n", 247 (long long)blk, (long long)fragnum(&sblock, blk), 248 cnt); 249 return (1); 250 } 251 c = dtog(&sblock, blk); 252 if (blk < cgdmin(&sblock, c)) { 253 if ((blk + cnt) > cgsblock(&sblock, c)) { 254 if (debug) { 255 printf("blk %lld < cgdmin %lld;", 256 (long long)blk, 257 (long long)cgdmin(&sblock, c)); 258 printf(" blk + cnt %lld > cgsbase %lld\n", 259 (long long)(blk + cnt), 260 (long long)cgsblock(&sblock, c)); 261 } 262 return (1); 263 } 264 } else { 265 if ((blk + cnt) > cgbase(&sblock, c+1)) { 266 if (debug) { 267 printf("blk %lld >= cgdmin %lld;", 268 (long long)blk, 269 (long long)cgdmin(&sblock, c)); 270 printf(" blk + cnt %lld > sblock.fs_fpg %d\n", 271 (long long)(blk+cnt), sblock.fs_fpg); 272 } 273 return (1); 274 } 275 } 276 return (0); 277 } 278 279 /* 280 * General purpose interface for reading inodes. 281 */ 282 union dinode * 283 ginode(ino_t inumber) 284 { 285 daddr_t iblk; 286 287 if (inumber < ROOTINO || inumber > maxino) 288 errexit("bad inode number %llu to ginode\n", 289 (unsigned long long)inumber); 290 if (startinum == 0 || 291 inumber < startinum || inumber >= startinum + INOPB(&sblock)) { 292 iblk = ino_to_fsba(&sblock, inumber); 293 if (pbp != 0) 294 pbp->b_flags &= ~B_INUSE; 295 pbp = getdatablk(iblk, sblock.fs_bsize); 296 startinum = (inumber / INOPB(&sblock)) * INOPB(&sblock); 297 } 298 if (sblock.fs_magic == FS_UFS1_MAGIC) 299 return ((union dinode *) 300 &pbp->b_un.b_dinode1[inumber % INOPB(&sblock)]); 301 return ((union dinode *)&pbp->b_un.b_dinode2[inumber % INOPB(&sblock)]); 302 } 303 304 /* 305 * Special purpose version of ginode used to optimize first pass 306 * over all the inodes in numerical order. 307 */ 308 ino_t nextino, lastinum; 309 long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize; 310 static caddr_t inodebuf; 311 312 union dinode * 313 getnextinode(ino_t inumber) 314 { 315 long size; 316 daddr_t dblk; 317 union dinode *dp; 318 static caddr_t nextinop; 319 320 if (inumber != nextino++ || inumber > maxino) 321 errexit("bad inode number %llu to nextinode %llu\n", 322 (unsigned long long)inumber, 323 (unsigned long long)nextino); 324 if (inumber >= lastinum) { 325 readcnt++; 326 dblk = fsbtodb(&sblock, ino_to_fsba(&sblock, lastinum)); 327 if (readcnt % readpercg == 0) { 328 size = partialsize; 329 lastinum += partialcnt; 330 } else { 331 size = inobufsize; 332 lastinum += fullcnt; 333 } 334 (void)bread(fsreadfd, inodebuf, dblk, size); 335 nextinop = inodebuf; 336 } 337 dp = (union dinode *)nextinop; 338 if (sblock.fs_magic == FS_UFS1_MAGIC) 339 nextinop += sizeof(struct ufs1_dinode); 340 else 341 nextinop += sizeof(struct ufs2_dinode); 342 return (dp); 343 } 344 345 void 346 setinodebuf(ino_t inum) 347 { 348 349 startinum = 0; 350 nextino = inum; 351 lastinum = inum; 352 readcnt = 0; 353 if (inodebuf != NULL) 354 return; 355 inobufsize = blkroundup(&sblock, INOBUFSIZE); 356 if (sblock.fs_magic == FS_UFS1_MAGIC) 357 fullcnt = inobufsize / sizeof(struct ufs1_dinode); 358 else 359 fullcnt = inobufsize / sizeof(struct ufs2_dinode); 360 readpercg = sblock.fs_ipg / fullcnt; 361 partialcnt = sblock.fs_ipg % fullcnt; 362 if (sblock.fs_magic == FS_UFS1_MAGIC) 363 partialsize = partialcnt * sizeof(struct ufs1_dinode); 364 else 365 partialsize = partialcnt * sizeof(struct ufs2_dinode); 366 if (partialcnt != 0) { 367 readpercg++; 368 } else { 369 partialcnt = fullcnt; 370 partialsize = inobufsize; 371 } 372 if (inodebuf == NULL && 373 (inodebuf = malloc((unsigned)inobufsize)) == NULL) 374 errexit("Cannot allocate space for inode buffer\n"); 375 } 376 377 void 378 freeinodebuf(void) 379 { 380 381 free(inodebuf); 382 inodebuf = NULL; 383 } 384 385 /* 386 * Routines to maintain information about directory inodes. 387 * This is built during the first pass and used during the 388 * second and third passes. 389 * 390 * Enter inodes into the cache. 391 */ 392 void 393 cacheino(union dinode *dp, ino_t inumber) 394 { 395 struct inoinfo *inp; 396 struct inoinfo **inpp, **newinpsort; 397 unsigned int blks; 398 long newlistmax; 399 int i; 400 401 blks = howmany(DIP(dp, di_size), sblock.fs_bsize); 402 if (blks > NDADDR) 403 blks = NDADDR + NIADDR; 404 inp = malloc(sizeof(*inp) + (blks ? blks - 1 : 0) * sizeof(daddr_t)); 405 if (inp == NULL) 406 errexit("cannot allocate memory for inode cache\n"); 407 inpp = &inphead[inumber % numdirs]; 408 inp->i_nexthash = *inpp; 409 *inpp = inp; 410 inp->i_child = inp->i_sibling = 0; 411 if (inumber == ROOTINO) 412 inp->i_parent = ROOTINO; 413 else 414 inp->i_parent = 0; 415 inp->i_dotdot = 0; 416 inp->i_number = inumber; 417 inp->i_isize = DIP(dp, di_size); 418 inp->i_numblks = blks; 419 for (i = 0; i < (blks < NDADDR ? blks : NDADDR); i++) 420 inp->i_blks[i] = DIP(dp, di_db[i]); 421 if (blks > NDADDR) 422 for (i = 0; i < NIADDR; i++) 423 inp->i_blks[NDADDR + i] = DIP(dp, di_ib[i]); 424 if (inplast == listmax) { 425 newlistmax = listmax + 100; 426 newinpsort = reallocarray(inpsort, 427 (unsigned)newlistmax, sizeof(struct inoinfo *)); 428 if (newinpsort == NULL) 429 errexit("cannot increase directory list"); 430 inpsort = newinpsort; 431 listmax = newlistmax; 432 } 433 inpsort[inplast++] = inp; 434 } 435 436 /* 437 * Look up an inode cache structure. 438 */ 439 struct inoinfo * 440 getinoinfo(ino_t inumber) 441 { 442 struct inoinfo *inp; 443 444 for (inp = inphead[inumber % numdirs]; inp; inp = inp->i_nexthash) { 445 if (inp->i_number != inumber) 446 continue; 447 return (inp); 448 } 449 errexit("cannot find inode %llu\n", (unsigned long long)inumber); 450 return (NULL); 451 } 452 453 /* 454 * Clean up all the inode cache structure. 455 */ 456 void 457 inocleanup(void) 458 { 459 struct inoinfo **inpp; 460 461 if (inphead == NULL) 462 return; 463 for (inpp = &inpsort[inplast - 1]; inpp >= inpsort; inpp--) 464 free(*inpp); 465 free(inphead); 466 free(inpsort); 467 inphead = inpsort = NULL; 468 } 469 470 void 471 inodirty(void) 472 { 473 dirty(pbp); 474 } 475 476 void 477 clri(struct inodesc *idesc, char *type, int flag) 478 { 479 union dinode *dp; 480 481 dp = ginode(idesc->id_number); 482 if (flag == 1) { 483 pwarn("%s %s", type, 484 (DIP(dp, di_mode) & IFMT) == IFDIR ? "DIR" : "FILE"); 485 pinode(idesc->id_number); 486 } 487 if (preen || reply("CLEAR") == 1) { 488 if (preen) 489 printf(" (CLEARED)\n"); 490 n_files--; 491 (void)ckinode(dp, idesc); 492 clearinode(dp); 493 SET_ISTATE(idesc->id_number, USTATE); 494 inodirty(); 495 } 496 } 497 498 int 499 findname(struct inodesc *idesc) 500 { 501 struct direct *dirp = idesc->id_dirp; 502 503 if (dirp->d_ino != idesc->id_parent) 504 return (KEEPON); 505 memcpy(idesc->id_name, dirp->d_name, (size_t)dirp->d_namlen + 1); 506 return (STOP|FOUND); 507 } 508 509 int 510 findino(struct inodesc *idesc) 511 { 512 struct direct *dirp = idesc->id_dirp; 513 514 if (dirp->d_ino == 0) 515 return (KEEPON); 516 if (strcmp(dirp->d_name, idesc->id_name) == 0 && 517 dirp->d_ino >= ROOTINO && dirp->d_ino <= maxino) { 518 idesc->id_parent = dirp->d_ino; 519 return (STOP|FOUND); 520 } 521 return (KEEPON); 522 } 523 524 void 525 pinode(ino_t ino) 526 { 527 union dinode *dp; 528 char *p; 529 struct passwd *pw; 530 time_t t; 531 532 printf(" I=%llu ", (unsigned long long)ino); 533 if (ino < ROOTINO || ino > maxino) 534 return; 535 dp = ginode(ino); 536 printf(" OWNER="); 537 #ifndef SMALL 538 if ((pw = getpwuid(DIP(dp, di_uid))) != 0) 539 printf("%s ", pw->pw_name); 540 else 541 #endif 542 printf("%u ", (unsigned)DIP(dp, di_uid)); 543 printf("MODE=%o\n", DIP(dp, di_mode)); 544 if (preen) 545 printf("%s: ", cdevname()); 546 printf("SIZE=%llu ", (unsigned long long)DIP(dp, di_size)); 547 t = DIP(dp, di_mtime); 548 p = ctime(&t); 549 printf("MTIME=%12.12s %4.4s ", &p[4], &p[20]); 550 } 551 552 void 553 blkerror(ino_t ino, char *type, daddr_t blk) 554 { 555 556 pfatal("%lld %s I=%llu", blk, type, (unsigned long long)ino); 557 printf("\n"); 558 switch (GET_ISTATE(ino)) { 559 560 case FSTATE: 561 SET_ISTATE(ino, FCLEAR); 562 return; 563 564 case DSTATE: 565 SET_ISTATE(ino, DCLEAR); 566 return; 567 568 case FCLEAR: 569 case DCLEAR: 570 return; 571 572 default: 573 errexit("BAD STATE %d TO BLKERR\n", GET_ISTATE(ino)); 574 /* NOTREACHED */ 575 } 576 } 577 578 /* 579 * allocate an unused inode 580 */ 581 ino_t 582 allocino(ino_t request, int type) 583 { 584 ino_t ino; 585 union dinode *dp; 586 struct cg *cgp = &cgrp; 587 int cg; 588 time_t t; 589 struct inostat *info; 590 591 if (request == 0) 592 request = ROOTINO; 593 else if (GET_ISTATE(request) != USTATE) 594 return (0); 595 for (ino = request; ino < maxino; ino++) 596 if (GET_ISTATE(ino) == USTATE) 597 break; 598 if (ino == maxino) 599 return (0); 600 cg = ino_to_cg(&sblock, ino); 601 /* If necessary, extend the inoinfo array. grow exponentially */ 602 if ((ino % sblock.fs_ipg) >= (uint64_t)inostathead[cg].il_numalloced) { 603 unsigned long newalloced, i; 604 newalloced = MINIMUM(sblock.fs_ipg, 605 MAXIMUM(2 * inostathead[cg].il_numalloced, 10)); 606 info = calloc(newalloced, sizeof(struct inostat)); 607 if (info == NULL) { 608 pwarn("cannot alloc %zu bytes to extend inoinfo\n", 609 sizeof(struct inostat) * newalloced); 610 return 0; 611 } 612 memmove(info, inostathead[cg].il_stat, 613 inostathead[cg].il_numalloced * sizeof(*info)); 614 for (i = inostathead[cg].il_numalloced; i < newalloced; i++) { 615 info[i].ino_state = USTATE; 616 } 617 if (inostathead[cg].il_numalloced) 618 free(inostathead[cg].il_stat); 619 inostathead[cg].il_stat = info; 620 inostathead[cg].il_numalloced = newalloced; 621 info = inoinfo(ino); 622 } 623 getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize); 624 if (!cg_chkmagic(cgp)) 625 pfatal("CG %d: BAD MAGIC NUMBER\n", cg); 626 setbit(cg_inosused(cgp), ino % sblock.fs_ipg); 627 cgp->cg_cs.cs_nifree--; 628 629 switch (type & IFMT) { 630 case IFDIR: 631 SET_ISTATE(ino, DSTATE); 632 cgp->cg_cs.cs_ndir++; 633 break; 634 case IFREG: 635 case IFLNK: 636 SET_ISTATE(ino, FSTATE); 637 break; 638 default: 639 return (0); 640 } 641 cgdirty(); 642 dp = ginode(ino); 643 DIP_SET(dp, di_db[0], allocblk(1)); 644 if (DIP(dp, di_db[0]) == 0) { 645 SET_ISTATE(ino, USTATE); 646 return (0); 647 } 648 DIP_SET(dp, di_mode, type); 649 DIP_SET(dp, di_uid, geteuid()); 650 DIP_SET(dp, di_gid, getegid()); 651 DIP_SET(dp, di_flags, 0); 652 (void)time(&t); 653 DIP_SET(dp, di_atime, t); 654 DIP_SET(dp, di_atimensec, 0); 655 DIP_SET(dp, di_mtime, t); 656 DIP_SET(dp, di_mtimensec, 0); 657 DIP_SET(dp, di_ctime, t); 658 DIP_SET(dp, di_ctimensec, 0); 659 DIP_SET(dp, di_size, sblock.fs_fsize); 660 DIP_SET(dp, di_blocks, btodb(sblock.fs_fsize)); 661 n_files++; 662 inodirty(); 663 SET_ITYPE(ino, IFTODT(type)); 664 return (ino); 665 } 666 667 /* 668 * deallocate an inode 669 */ 670 void 671 freeino(ino_t ino) 672 { 673 struct inodesc idesc; 674 union dinode *dp; 675 676 memset(&idesc, 0, sizeof(struct inodesc)); 677 idesc.id_type = ADDR; 678 idesc.id_func = pass4check; 679 idesc.id_number = ino; 680 dp = ginode(ino); 681 (void)ckinode(dp, &idesc); 682 clearinode(dp); 683 inodirty(); 684 SET_ISTATE(ino, USTATE); 685 n_files--; 686 } 687