sbin/fsck_ffs/inode.c

   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
  32 static const char sccsid[] = "@(#)inode.c       8.8 (Berkeley) 4/28/95";
  33 #endif /* not lint */
  34 #endif
  35 #include <sys/cdefs.h>
  36 __FBSDID("$FreeBSD$");
  37
  38 #include <sys/param.h>
  39 #include <sys/stdint.h>
  40 #include <sys/time.h>
  41 #include <sys/sysctl.h>
  42
  43 #include <ufs/ufs/dinode.h>
  44 #include <ufs/ufs/dir.h>
  45 #include <ufs/ffs/fs.h>
  46
  47 #include <err.h>
  48 #include <pwd.h>
  49 #include <string.h>
  50
  51 #include "fsck.h"
  52
  53 static ino_t startinum;
  54
  55 static int iblock(struct inodesc *, long ilevel, off_t isize);
  56
  57 int
  58 ckinode(union dinode *dp, struct inodesc *idesc)
  59 {
  60         off_t remsize, sizepb;
  61         int i, offset, ret;
  62         union dinode dino;
  63         ufs2_daddr_t ndb;
  64         mode_t mode;
  65         char pathbuf[MAXPATHLEN + 1];
  66
  67         if (idesc->id_fix != IGNORE)
  68                 idesc->id_fix = DONTKNOW;
  69         idesc->id_lbn = -1;
  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) < (unsigned)sblock.fs_maxsymlinklen))
  75                 return (KEEPON);
  76         if (sblock.fs_magic == FS_UFS1_MAGIC)
  77                 dino.dp1 = dp->dp1;
  78         else
  79                 dino.dp2 = dp->dp2;
  80         ndb = howmany(DIP(&dino, di_size), sblock.fs_bsize);
  81         for (i = 0; i < NDADDR; i++) {
  82                 idesc->id_lbn++;
  83                 if (--ndb == 0 &&
  84                     (offset = blkoff(&sblock, 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, idesc->id_number,
  93                                                 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                         }
 107                         continue;
 108                 }
 109                 idesc->id_blkno = DIP(&dino, di_db[i]);
 110                 if (idesc->id_type != DATA)
 111                         ret = (*idesc->id_func)(idesc);
 112                 else
 113                         ret = dirscan(idesc);
 114                 if (ret & STOP)
 115                         return (ret);
 116         }
 117         idesc->id_numfrags = sblock.fs_frag;
 118         remsize = DIP(&dino, di_size) - sblock.fs_bsize * NDADDR;
 119         sizepb = sblock.fs_bsize;
 120         for (i = 0; i < NIADDR; i++) {
 121                 sizepb *= NINDIR(&sblock);
 122                 if (DIP(&dino, di_ib[i])) {
 123                         idesc->id_blkno = DIP(&dino, di_ib[i]);
 124                         ret = iblock(idesc, i + 1, remsize);
 125                         if (ret & STOP)
 126                                 return (ret);
 127                 } else {
 128                         idesc->id_lbn += sizepb / sblock.fs_bsize;
 129                         if (idesc->id_type == DATA && remsize > 0) {
 130                                 /* An empty block in a directory XXX */
 131                                 getpathname(pathbuf, idesc->id_number,
 132                                                 idesc->id_number);
 133                                 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
 134                                         pathbuf);
 135                                 if (reply("ADJUST LENGTH") == 1) {
 136                                         dp = ginode(idesc->id_number);
 137                                         DIP_SET(dp, di_size,
 138                                             DIP(dp, di_size) - remsize);
 139                                         remsize = 0;
 140                                         printf(
 141                                             "YOU MUST RERUN FSCK AFTERWARDS\n");
 142                                         rerun = 1;
 143                                         inodirty();
 144                                         break;
 145                                 }
 146                         }
 147                 }
 148                 remsize -= sizepb;
 149         }
 150         return (KEEPON);
 151 }
 152
 153 static int
 154 iblock(struct inodesc *idesc, long ilevel, off_t isize)
 155 {
 156         struct bufarea *bp;
 157         int i, n, (*func)(struct inodesc *), nif;
 158         off_t sizepb;
 159         char buf[BUFSIZ];
 160         char pathbuf[MAXPATHLEN + 1];
 161         union dinode *dp;
 162
 163         if (idesc->id_type != DATA) {
 164                 func = idesc->id_func;
 165                 if (((n = (*func)(idesc)) & KEEPON) == 0)
 166                         return (n);
 167         } else
 168                 func = dirscan;
 169         if (chkrange(idesc->id_blkno, idesc->id_numfrags))
 170                 return (SKIP);
 171         bp = getdatablk(idesc->id_blkno, sblock.fs_bsize);
 172         ilevel--;
 173         for (sizepb = sblock.fs_bsize, i = 0; i < ilevel; i++)
 174                 sizepb *= NINDIR(&sblock);
 175         if (howmany(isize, sizepb) > NINDIR(&sblock))
 176                 nif = NINDIR(&sblock);
 177         else
 178                 nif = howmany(isize, sizepb);
 179         if (idesc->id_func == pass1check && nif < NINDIR(&sblock)) {
 180                 for (i = nif; i < NINDIR(&sblock); i++) {
 181                         if (IBLK(bp, i) == 0)
 182                                 continue;
 183                         (void)sprintf(buf, "PARTIALLY TRUNCATED INODE I=%lu",
 184                             (u_long)idesc->id_number);
 185                         if (preen) {
 186                                 pfatal("%s", buf);
 187                         } else if (dofix(idesc, buf)) {
 188                                 IBLK_SET(bp, i, 0);
 189                                 dirty(bp);
 190                         }
 191                 }
 192                 flush(fswritefd, bp);
 193         }
 194         for (i = 0; i < nif; i++) {
 195                 if (ilevel == 0)
 196                         idesc->id_lbn++;
 197                 if (IBLK(bp, i)) {
 198                         idesc->id_blkno = IBLK(bp, i);
 199                         if (ilevel == 0)
 200                                 n = (*func)(idesc);
 201                         else
 202                                 n = iblock(idesc, ilevel, isize);
 203                         if (n & STOP) {
 204                                 bp->b_flags &= ~B_INUSE;
 205                                 return (n);
 206                         }
 207                 } else {
 208                         if (idesc->id_type == DATA && isize > 0) {
 209                                 /* An empty block in a directory XXX */
 210                                 getpathname(pathbuf, idesc->id_number,
 211                                                 idesc->id_number);
 212                                 pfatal("DIRECTORY %s: CONTAINS EMPTY BLOCKS",
 213                                         pathbuf);
 214                                 if (reply("ADJUST LENGTH") == 1) {
 215                                         dp = ginode(idesc->id_number);
 216                                         DIP_SET(dp, di_size,
 217                                             DIP(dp, di_size) - isize);
 218                                         isize = 0;
 219                                         printf(
 220                                             "YOU MUST RERUN FSCK AFTERWARDS\n");
 221                                         rerun = 1;
 222                                         inodirty();
 223                                         bp->b_flags &= ~B_INUSE;
 224                                         return(STOP);
 225                                 }
 226                         }
 227                 }
 228                 isize -= sizepb;
 229         }
 230         bp->b_flags &= ~B_INUSE;
 231         return (KEEPON);
 232 }
 233
 234 /*
 235  * Check that a block in a legal block number.
 236  * Return 0 if in range, 1 if out of range.
 237  */
 238 int
 239 chkrange(ufs2_daddr_t blk, int cnt)
 240 {
 241         int c;
 242
 243         if (cnt <= 0 || blk <= 0 || blk > maxfsblock ||
 244             cnt - 1 > maxfsblock - blk)
 245                 return (1);
 246         if (cnt > sblock.fs_frag ||
 247             fragnum(&sblock, blk) + cnt > sblock.fs_frag) {
 248                 if (debug)
 249                         printf("bad size: blk %ld, offset %i, size %d\n",
 250                             (long)blk, (int)fragnum(&sblock, blk), cnt);
 251                 return (1);
 252         }
 253         c = dtog(&sblock, blk);
 254         if (blk < cgdmin(&sblock, c)) {
 255                 if ((blk + cnt) > cgsblock(&sblock, c)) {
 256                         if (debug) {
 257                                 printf("blk %ld < cgdmin %ld;",
 258                                     (long)blk, (long)cgdmin(&sblock, c));
 259                                 printf(" blk + cnt %ld > cgsbase %ld\n",
 260                                     (long)(blk + cnt),
 261                                     (long)cgsblock(&sblock, c));
 262                         }
 263                         return (1);
 264                 }
 265         } else {
 266                 if ((blk + cnt) > cgbase(&sblock, c+1)) {
 267                         if (debug)  {
 268                                 printf("blk %ld >= cgdmin %ld;",
 269                                     (long)blk, (long)cgdmin(&sblock, c));
 270                                 printf(" blk + cnt %ld > sblock.fs_fpg %ld\n",
 271                                     (long)(blk + cnt), (long)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         ufs2_daddr_t iblk;
 286
 287         if (inumber < ROOTINO || inumber > maxino)
 288                 errx(EEXIT, "bad inode number %d to ginode", inumber);
 289         if (startinum == 0 ||
 290             inumber < startinum || inumber >= startinum + INOPB(&sblock)) {
 291                 iblk = ino_to_fsba(&sblock, inumber);
 292                 if (pbp != 0)
 293                         pbp->b_flags &= ~B_INUSE;
 294                 pbp = getdatablk(iblk, sblock.fs_bsize);
 295                 startinum = (inumber / INOPB(&sblock)) * INOPB(&sblock);
 296         }
 297         if (sblock.fs_magic == FS_UFS1_MAGIC)
 298                 return ((union dinode *)
 299                     &pbp->b_un.b_dinode1[inumber % INOPB(&sblock)]);
 300         return ((union dinode *)&pbp->b_un.b_dinode2[inumber % INOPB(&sblock)]);
 301 }
 302
 303 /*
 304  * Special purpose version of ginode used to optimize first pass
 305  * over all the inodes in numerical order.
 306  */
 307 static ino_t nextino, lastinum, lastvalidinum;
 308 static long readcnt, readpercg, fullcnt, inobufsize, partialcnt, partialsize;
 309 static caddr_t inodebuf;
 310
 311 union dinode *
 312 getnextinode(ino_t inumber)
 313 {
 314         long size;
 315         ufs2_daddr_t dblk;
 316         union dinode *dp;
 317         static caddr_t nextinop;
 318
 319         if (inumber != nextino++ || inumber > lastvalidinum)
 320                 errx(EEXIT, "bad inode number %d to nextinode", inumber);
 321         if (inumber >= lastinum) {
 322                 readcnt++;
 323                 dblk = fsbtodb(&sblock, ino_to_fsba(&sblock, lastinum));
 324                 if (readcnt % readpercg == 0) {
 325                         size = partialsize;
 326                         lastinum += partialcnt;
 327                 } else {
 328                         size = inobufsize;
 329                         lastinum += fullcnt;
 330                 }
 331                 /*
 332                  * If blread returns an error, it will already have zeroed
 333                  * out the buffer, so we do not need to do so here.
 334                  */
 335                 (void)blread(fsreadfd, inodebuf, dblk, size);
 336                 nextinop = inodebuf;
 337         }
 338         dp = (union dinode *)nextinop;
 339         if (sblock.fs_magic == FS_UFS1_MAGIC)
 340                 nextinop += sizeof(struct ufs1_dinode);
 341         else
 342                 nextinop += sizeof(struct ufs2_dinode);
 343         return (dp);
 344 }
 345
 346 void
 347 setinodebuf(ino_t inum)
 348 {
 349
 350         if (inum % sblock.fs_ipg != 0)
 351                 errx(EEXIT, "bad inode number %d to setinodebuf", inum);
 352         lastvalidinum = inum + sblock.fs_ipg - 1;
 353         startinum = 0;
 354         nextino = inum;
 355         lastinum = inum;
 356         readcnt = 0;
 357         if (inodebuf != NULL)
 358                 return;
 359         inobufsize = blkroundup(&sblock, INOBUFSIZE);
 360         fullcnt = inobufsize / ((sblock.fs_magic == FS_UFS1_MAGIC) ?
 361             sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
 362         readpercg = sblock.fs_ipg / fullcnt;
 363         partialcnt = sblock.fs_ipg % fullcnt;
 364         partialsize = partialcnt * ((sblock.fs_magic == FS_UFS1_MAGIC) ?
 365             sizeof(struct ufs1_dinode) : sizeof(struct ufs2_dinode));
 366         if (partialcnt != 0) {
 367                 readpercg++;
 368         } else {
 369                 partialcnt = fullcnt;
 370                 partialsize = inobufsize;
 371         }
 372         if ((inodebuf = malloc((unsigned)inobufsize)) == NULL)
 373                 errx(EEXIT, "cannot allocate space for inode buffer");
 374 }
 375
 376 void
 377 freeinodebuf(void)
 378 {
 379
 380         if (inodebuf != NULL)
 381                 free((char *)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, **inpp;
 396         int i, blks;
 397
 398         if (howmany(DIP(dp, di_size), sblock.fs_bsize) > NDADDR)
 399                 blks = NDADDR + NIADDR;
 400         else
 401                 blks = howmany(DIP(dp, di_size), sblock.fs_bsize);
 402         inp = (struct inoinfo *)
 403                 malloc(sizeof(*inp) + (blks - 1) * sizeof(ufs2_daddr_t));
 404         if (inp == NULL)
 405                 errx(EEXIT, "cannot increase directory list");
 406         inpp = &inphead[inumber % dirhash];
 407         inp->i_nexthash = *inpp;
 408         *inpp = inp;
 409         inp->i_parent = inumber == ROOTINO ? ROOTINO : (ino_t)0;
 410         inp->i_dotdot = (ino_t)0;
 411         inp->i_number = inumber;
 412         inp->i_isize = DIP(dp, di_size);
 413         inp->i_numblks = blks;
 414         for (i = 0; i < (blks < NDADDR ? blks : NDADDR); i++)
 415                 inp->i_blks[i] = DIP(dp, di_db[i]);
 416         if (blks > NDADDR)
 417                 for (i = 0; i < NIADDR; i++)
 418                         inp->i_blks[NDADDR + i] = DIP(dp, di_ib[i]);
 419         if (inplast == listmax) {
 420                 listmax += 100;
 421                 inpsort = (struct inoinfo **)realloc((char *)inpsort,
 422                     (unsigned)listmax * sizeof(struct inoinfo *));
 423                 if (inpsort == NULL)
 424                         errx(EEXIT, "cannot increase directory list");
 425         }
 426         inpsort[inplast++] = inp;
 427 }
 428
 429 /*
 430  * Look up an inode cache structure.
 431  */
 432 struct inoinfo *
 433 getinoinfo(ino_t inumber)
 434 {
 435         struct inoinfo *inp;
 436
 437         for (inp = inphead[inumber % dirhash]; inp; inp = inp->i_nexthash) {
 438                 if (inp->i_number != inumber)
 439                         continue;
 440                 return (inp);
 441         }
 442         errx(EEXIT, "cannot find inode %d", inumber);
 443         return ((struct inoinfo *)0);
 444 }
 445
 446 /*
 447  * Clean up all the inode cache structure.
 448  */
 449 void
 450 inocleanup(void)
 451 {
 452         struct inoinfo **inpp;
 453
 454         if (inphead == NULL)
 455                 return;
 456         for (inpp = &inpsort[inplast - 1]; inpp >= inpsort; inpp--)
 457                 free((char *)(*inpp));
 458         free((char *)inphead);
 459         free((char *)inpsort);
 460         inphead = inpsort = NULL;
 461 }
 462
 463 void
 464 inodirty(void)
 465 {
 466
 467         dirty(pbp);
 468 }
 469
 470 void
 471 clri(struct inodesc *idesc, const char *type, int flag)
 472 {
 473         union dinode *dp;
 474
 475         dp = ginode(idesc->id_number);
 476         if (flag == 1) {
 477                 pwarn("%s %s", type,
 478                     (DIP(dp, di_mode) & IFMT) == IFDIR ? "DIR" : "FILE");
 479                 pinode(idesc->id_number);
 480         }
 481         if (preen || reply("CLEAR") == 1) {
 482                 if (preen)
 483                         printf(" (CLEARED)\n");
 484                 n_files--;
 485                 if (bkgrdflag == 0) {
 486                         (void)ckinode(dp, idesc);
 487                         inoinfo(idesc->id_number)->ino_state = USTATE;
 488                         clearinode(dp);
 489                         inodirty();
 490                 } else {
 491                         cmd.value = idesc->id_number;
 492                         cmd.size = -DIP(dp, di_nlink);
 493                         if (debug)
 494                                 printf("adjrefcnt ino %ld amt %lld\n",
 495                                     (long)cmd.value, (long long)cmd.size);
 496                         if (sysctl(adjrefcnt, MIBSIZE, 0, 0,
 497                             &cmd, sizeof cmd) == -1)
 498                                 rwerror("ADJUST INODE", cmd.value);
 499                 }
 500         }
 501 }
 502
 503 int
 504 findname(struct inodesc *idesc)
 505 {
 506         struct direct *dirp = idesc->id_dirp;
 507
 508         if (dirp->d_ino != idesc->id_parent || idesc->id_entryno < 2) {
 509                 idesc->id_entryno++;
 510                 return (KEEPON);
 511         }
 512         memmove(idesc->id_name, dirp->d_name, (size_t)dirp->d_namlen + 1);
 513         return (STOP|FOUND);
 514 }
 515
 516 int
 517 findino(struct inodesc *idesc)
 518 {
 519         struct direct *dirp = idesc->id_dirp;
 520
 521         if (dirp->d_ino == 0)
 522                 return (KEEPON);
 523         if (strcmp(dirp->d_name, idesc->id_name) == 0 &&
 524             dirp->d_ino >= ROOTINO && dirp->d_ino <= maxino) {
 525                 idesc->id_parent = dirp->d_ino;
 526                 return (STOP|FOUND);
 527         }
 528         return (KEEPON);
 529 }
 530
 531 int
 532 clearentry(struct inodesc *idesc)
 533 {
 534         struct direct *dirp = idesc->id_dirp;
 535
 536         if (dirp->d_ino != idesc->id_parent || idesc->id_entryno < 2) {
 537                 idesc->id_entryno++;
 538                 return (KEEPON);
 539         }
 540         dirp->d_ino = 0;
 541         return (STOP|FOUND|ALTERED);
 542 }
 543
 544 void
 545 pinode(ino_t ino)
 546 {
 547         union dinode *dp;
 548         char *p;
 549         struct passwd *pw;
 550         time_t t;
 551
 552         printf(" I=%lu ", (u_long)ino);
 553         if (ino < ROOTINO || ino > maxino)
 554                 return;
 555         dp = ginode(ino);
 556         printf(" OWNER=");
 557         if ((pw = getpwuid((int)DIP(dp, di_uid))) != 0)
 558                 printf("%s ", pw->pw_name);
 559         else
 560                 printf("%u ", (unsigned)DIP(dp, di_uid));
 561         printf("MODE=%o\n", DIP(dp, di_mode));
 562         if (preen)
 563                 printf("%s: ", cdevname);
 564         printf("SIZE=%ju ", (uintmax_t)DIP(dp, di_size));
 565         t = DIP(dp, di_mtime);
 566         p = ctime(&t);
 567         printf("MTIME=%12.12s %4.4s ", &p[4], &p[20]);
 568 }
 569
 570 void
 571 blkerror(ino_t ino, const char *type, ufs2_daddr_t blk)
 572 {
 573
 574         pfatal("%jd %s I=%ju", (intmax_t)blk, type, (uintmax_t)ino);
 575         printf("\n");
 576         switch (inoinfo(ino)->ino_state) {
 577
 578         case FSTATE:
 579         case FZLINK:
 580                 inoinfo(ino)->ino_state = FCLEAR;
 581                 return;
 582
 583         case DSTATE:
 584         case DZLINK:
 585                 inoinfo(ino)->ino_state = DCLEAR;
 586                 return;
 587
 588         case FCLEAR:
 589         case DCLEAR:
 590                 return;
 591
 592         default:
 593                 errx(EEXIT, "BAD STATE %d TO BLKERR", inoinfo(ino)->ino_state);
 594                 /* NOTREACHED */
 595         }
 596 }
 597
 598 /*
 599  * allocate an unused inode
 600  */
 601 ino_t
 602 allocino(ino_t request, int type)
 603 {
 604         ino_t ino;
 605         union dinode *dp;
 606         struct cg *cgp = &cgrp;
 607         int cg;
 608
 609         if (request == 0)
 610                 request = ROOTINO;
 611         else if (inoinfo(request)->ino_state != USTATE)
 612                 return (0);
 613         for (ino = request; ino < maxino; ino++)
 614                 if (inoinfo(ino)->ino_state == USTATE)
 615                         break;
 616         if (ino == maxino)
 617                 return (0);
 618         cg = ino_to_cg(&sblock, ino);
 619         getblk(&cgblk, cgtod(&sblock, cg), sblock.fs_cgsize);
 620         check_cgmagic(cg, cgp);
 621         setbit(cg_inosused(cgp), ino % sblock.fs_ipg);
 622         cgp->cg_cs.cs_nifree--;
 623         switch (type & IFMT) {
 624         case IFDIR:
 625                 inoinfo(ino)->ino_state = DSTATE;
 626                 cgp->cg_cs.cs_ndir++;
 627                 break;
 628         case IFREG:
 629         case IFLNK:
 630                 inoinfo(ino)->ino_state = FSTATE;
 631                 break;
 632         default:
 633                 return (0);
 634         }
 635         cgdirty();
 636         dp = ginode(ino);
 637         DIP_SET(dp, di_db[0], allocblk((long)1));
 638         if (DIP(dp, di_db[0]) == 0) {
 639                 inoinfo(ino)->ino_state = USTATE;
 640                 return (0);
 641         }
 642         DIP_SET(dp, di_mode, type);
 643         DIP_SET(dp, di_flags, 0);
 644         DIP_SET(dp, di_atime, time(NULL));
 645         DIP_SET(dp, di_ctime, DIP(dp, di_atime));
 646         DIP_SET(dp, di_mtime, DIP(dp, di_ctime));
 647         DIP_SET(dp, di_mtimensec, 0);
 648         DIP_SET(dp, di_ctimensec, 0);
 649         DIP_SET(dp, di_atimensec, 0);
 650         DIP_SET(dp, di_size, sblock.fs_fsize);
 651         DIP_SET(dp, di_blocks, btodb(sblock.fs_fsize));
 652         n_files++;
 653         inodirty();
 654         inoinfo(ino)->ino_type = IFTODT(type);
 655         return (ino);
 656 }
 657
 658 /*
 659  * deallocate an inode
 660  */
 661 void
 662 freeino(ino_t ino)
 663 {
 664         struct inodesc idesc;
 665         union dinode *dp;
 666
 667         memset(&idesc, 0, sizeof(struct inodesc));
 668         idesc.id_type = ADDR;
 669         idesc.id_func = pass4check;
 670         idesc.id_number = ino;
 671         dp = ginode(ino);
 672         (void)ckinode(dp, &idesc);
 673         clearinode(dp);
 674         inodirty();
 675         inoinfo(ino)->ino_state = USTATE;
 676         n_files--;
 677 }