dir.c revision 1.12
1 /* $NetBSD: dir.c,v 1.12 2003/10/03 12:23:22 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1980, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/time.h> 35 #include <sys/buf.h> 36 #include <sys/mount.h> 37 38 #include <ufs/ufs/inode.h> 39 #include <ufs/ufs/dir.h> 40 #include <ufs/ufs/ufsmount.h> 41 #include <ufs/lfs/lfs.h> 42 43 #include <err.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 48 #include "bufcache.h" 49 #include "vnode.h" 50 #include "lfs.h" 51 52 #include "fsck.h" 53 #include "fsutil.h" 54 #include "extern.h" 55 56 char *lfname = "lost+found"; 57 int lfmode = 01700; 58 struct dirtemplate emptydir = {0, DIRBLKSIZ}; 59 struct dirtemplate dirhead = { 60 0, 12, DT_DIR, 1, ".", 61 0, DIRBLKSIZ - 12, DT_DIR, 2, ".." 62 }; 63 struct odirtemplate odirhead = { 64 0, 12, 1, ".", 65 0, DIRBLKSIZ - 12, 2, ".." 66 }; 67 68 static int expanddir(struct uvnode *, struct ufs1_dinode *, char *); 69 static void freedir(ino_t, ino_t); 70 static struct direct *fsck_readdir(struct uvnode *, struct inodesc *); 71 static int lftempname(char *, ino_t); 72 static int mkentry(struct inodesc *); 73 static int chgino(struct inodesc *); 74 75 /* 76 * Propagate connected state through the tree. 77 */ 78 void 79 propagate() 80 { 81 struct inoinfo **inpp, *inp, *pinp; 82 struct inoinfo **inpend; 83 84 /* 85 * Create a list of children for each directory. 86 */ 87 inpend = &inpsort[inplast]; 88 for (inpp = inpsort; inpp < inpend; inpp++) { 89 inp = *inpp; 90 if (inp->i_parent == 0 || 91 inp->i_number == ROOTINO) 92 continue; 93 pinp = getinoinfo(inp->i_parent); 94 inp->i_parentp = pinp; 95 inp->i_sibling = pinp->i_child; 96 pinp->i_child = inp; 97 } 98 inp = getinoinfo(ROOTINO); 99 while (inp) { 100 statemap[inp->i_number] = DFOUND; 101 if (inp->i_child && 102 statemap[inp->i_child->i_number] == DSTATE) 103 inp = inp->i_child; 104 else if (inp->i_sibling) 105 inp = inp->i_sibling; 106 else 107 inp = inp->i_parentp; 108 } 109 } 110 111 /* 112 * Scan each entry in a directory block. 113 */ 114 int 115 dirscan(struct inodesc *idesc) 116 { 117 struct direct *dp; 118 struct ubuf *bp; 119 int dsize, n; 120 long blksiz; 121 char dbuf[DIRBLKSIZ]; 122 struct uvnode *vp; 123 124 if (idesc->id_type != DATA) 125 errexit("wrong type to dirscan %d\n", idesc->id_type); 126 if (idesc->id_entryno == 0 && 127 (idesc->id_filesize & (DIRBLKSIZ - 1)) != 0) 128 idesc->id_filesize = roundup(idesc->id_filesize, DIRBLKSIZ); 129 blksiz = idesc->id_numfrags * fs->lfs_fsize; 130 if (chkrange(idesc->id_blkno, fragstofsb(fs, idesc->id_numfrags))) { 131 idesc->id_filesize -= blksiz; 132 return (SKIP); 133 } 134 idesc->id_loc = 0; 135 136 vp = vget(fs, idesc->id_number); 137 for (dp = fsck_readdir(vp, idesc); dp != NULL; 138 dp = fsck_readdir(vp, idesc)) { 139 dsize = dp->d_reclen; 140 memcpy(dbuf, dp, (size_t) dsize); 141 idesc->id_dirp = (struct direct *) dbuf; 142 if ((n = (*idesc->id_func) (idesc)) & ALTERED) { 143 bread(vp, idesc->id_lblkno, blksiz, NOCRED, &bp); 144 memcpy(bp->b_data + idesc->id_loc - dsize, dbuf, 145 (size_t) dsize); 146 VOP_BWRITE(bp); 147 sbdirty(); 148 } 149 if (n & STOP) 150 return (n); 151 } 152 return (idesc->id_filesize > 0 ? KEEPON : STOP); 153 } 154 155 /* 156 * get next entry in a directory. 157 */ 158 static struct direct * 159 fsck_readdir(struct uvnode *vp, struct inodesc *idesc) 160 { 161 struct direct *dp, *ndp; 162 struct ubuf *bp; 163 long size, blksiz, fix, dploc; 164 165 blksiz = idesc->id_numfrags * fs->lfs_fsize; 166 bread(vp, idesc->id_lblkno, blksiz, NOCRED, &bp); 167 if (idesc->id_loc % DIRBLKSIZ == 0 && idesc->id_filesize > 0 && 168 idesc->id_loc < blksiz) { 169 dp = (struct direct *) (bp->b_data + idesc->id_loc); 170 if (dircheck(idesc, dp)) 171 goto dpok; 172 brelse(bp); 173 if (idesc->id_fix == IGNORE) 174 return (0); 175 fix = dofix(idesc, "DIRECTORY CORRUPTED"); 176 bread(vp, idesc->id_lblkno, blksiz, NOCRED, &bp); 177 dp = (struct direct *) (bp->b_data + idesc->id_loc); 178 dp->d_reclen = DIRBLKSIZ; 179 dp->d_ino = 0; 180 dp->d_type = 0; 181 dp->d_namlen = 0; 182 dp->d_name[0] = '\0'; 183 if (fix) 184 VOP_BWRITE(bp); 185 else 186 brelse(bp); 187 idesc->id_loc += DIRBLKSIZ; 188 idesc->id_filesize -= DIRBLKSIZ; 189 return (dp); 190 } 191 dpok: 192 if (idesc->id_filesize <= 0 || idesc->id_loc >= blksiz) { 193 brelse(bp); 194 return NULL; 195 } 196 dploc = idesc->id_loc; 197 dp = (struct direct *) (bp->b_data + dploc); 198 idesc->id_loc += dp->d_reclen; 199 idesc->id_filesize -= dp->d_reclen; 200 if ((idesc->id_loc % DIRBLKSIZ) == 0) { 201 brelse(bp); 202 return dp; 203 } 204 ndp = (struct direct *) (bp->b_data + idesc->id_loc); 205 if (idesc->id_loc < blksiz && idesc->id_filesize > 0 && 206 dircheck(idesc, ndp) == 0) { 207 brelse(bp); 208 size = DIRBLKSIZ - (idesc->id_loc % DIRBLKSIZ); 209 idesc->id_loc += size; 210 idesc->id_filesize -= size; 211 if (idesc->id_fix == IGNORE) 212 return 0; 213 fix = dofix(idesc, "DIRECTORY CORRUPTED"); 214 bread(vp, idesc->id_lblkno, blksiz, NOCRED, &bp); 215 dp = (struct direct *) (bp->b_data + dploc); 216 dp->d_reclen += size; 217 if (fix) 218 VOP_BWRITE(bp); 219 else 220 brelse(bp); 221 } else 222 brelse(bp); 223 224 return (dp); 225 } 226 227 /* 228 * Verify that a directory entry is valid. 229 * This is a superset of the checks made in the kernel. 230 */ 231 int 232 dircheck(struct inodesc *idesc, struct direct *dp) 233 { 234 int size; 235 char *cp; 236 u_char namlen, type; 237 int spaceleft; 238 239 spaceleft = DIRBLKSIZ - (idesc->id_loc % DIRBLKSIZ); 240 if (dp->d_ino >= maxino || 241 dp->d_reclen == 0 || 242 dp->d_reclen > spaceleft || 243 (dp->d_reclen & 0x3) != 0) { 244 pwarn("ino too large, reclen=0, reclen>space, or reclen&3!=0\n"); 245 pwarn("dp->d_ino = 0x%x\tdp->d_reclen = 0x%x\n", 246 dp->d_ino, dp->d_reclen); 247 pwarn("maxino = 0x%x\tspaceleft = 0x%x\n", maxino, spaceleft); 248 return (0); 249 } 250 if (dp->d_ino == 0) 251 return (1); 252 size = DIRSIZ(0, dp, 0); 253 namlen = dp->d_namlen; 254 type = dp->d_type; 255 if (dp->d_reclen < size || 256 idesc->id_filesize < size || 257 /* namlen > MAXNAMLEN || */ 258 type > 15) { 259 printf("reclen<size, filesize<size, namlen too large, or type>15\n"); 260 return (0); 261 } 262 for (cp = dp->d_name, size = 0; size < namlen; size++) 263 if (*cp == '\0' || (*cp++ == '/')) { 264 printf("name contains NUL or /\n"); 265 return (0); 266 } 267 if (*cp != '\0') { 268 printf("name size misstated\n"); 269 return (0); 270 } 271 return (1); 272 } 273 274 void 275 direrror(ino_t ino, char *errmesg) 276 { 277 278 fileerror(ino, ino, errmesg); 279 } 280 281 void 282 fileerror(ino_t cwd, ino_t ino, char *errmesg) 283 { 284 char pathbuf[MAXPATHLEN + 1]; 285 struct uvnode *vp; 286 struct inode *ip; 287 288 pwarn("%s ", errmesg); 289 pinode(ino); 290 printf("\n"); 291 getpathname(pathbuf, sizeof(pathbuf), cwd, ino); 292 if (ino < ROOTINO || ino >= maxino) { 293 pfatal("NAME=%s\n", pathbuf); 294 return; 295 } 296 vp = vget(fs, ino); 297 ip = VTOI(vp); 298 if (vp == NULL) 299 pfatal("INO is NULL\n"); 300 else { 301 if (ftypeok(VTOD(vp))) 302 pfatal("%s=%s\n", 303 (ip->i_ffs1_mode & IFMT) == IFDIR ? 304 "DIR" : "FILE", pathbuf); 305 else 306 pfatal("NAME=%s\n", pathbuf); 307 } 308 } 309 310 void 311 adjust(struct inodesc *idesc, short lcnt) 312 { 313 struct uvnode *vp; 314 struct ufs1_dinode *dp; 315 316 vp = vget(fs, idesc->id_number); 317 dp = VTOD(vp); 318 if (dp->di_nlink == lcnt) { 319 if (linkup(idesc->id_number, (ino_t) 0) == 0) 320 clri(idesc, "UNREF", 0); 321 } else { 322 pwarn("LINK COUNT %s", (lfdir == idesc->id_number) ? lfname : 323 ((dp->di_mode & IFMT) == IFDIR ? "DIR" : "FILE")); 324 pinode(idesc->id_number); 325 printf(" COUNT %d SHOULD BE %d", 326 dp->di_nlink, dp->di_nlink - lcnt); 327 if (preen) { 328 if (lcnt < 0) { 329 printf("\n"); 330 pfatal("LINK COUNT INCREASING"); 331 } 332 printf(" (ADJUSTED)\n"); 333 } 334 if (preen || reply("ADJUST") == 1) { 335 dp->di_nlink -= lcnt; 336 inodirty(VTOI(vp)); 337 } 338 } 339 } 340 341 static int 342 mkentry(struct inodesc *idesc) 343 { 344 struct direct *dirp = idesc->id_dirp; 345 struct direct newent; 346 int newlen, oldlen; 347 348 newent.d_namlen = strlen(idesc->id_name); 349 newlen = DIRSIZ(0, &newent, 0); 350 if (dirp->d_ino != 0) 351 oldlen = DIRSIZ(0, dirp, 0); 352 else 353 oldlen = 0; 354 if (dirp->d_reclen - oldlen < newlen) 355 return (KEEPON); 356 newent.d_reclen = dirp->d_reclen - oldlen; 357 dirp->d_reclen = oldlen; 358 dirp = (struct direct *) (((char *) dirp) + oldlen); 359 dirp->d_ino = idesc->id_parent; /* ino to be entered is in id_parent */ 360 dirp->d_reclen = newent.d_reclen; 361 dirp->d_type = typemap[idesc->id_parent]; 362 dirp->d_namlen = newent.d_namlen; 363 memcpy(dirp->d_name, idesc->id_name, (size_t) dirp->d_namlen + 1); 364 return (ALTERED | STOP); 365 } 366 367 static int 368 chgino(struct inodesc *idesc) 369 { 370 struct direct *dirp = idesc->id_dirp; 371 372 if (memcmp(dirp->d_name, idesc->id_name, (int) dirp->d_namlen + 1)) 373 return (KEEPON); 374 dirp->d_ino = idesc->id_parent; 375 dirp->d_type = typemap[idesc->id_parent]; 376 return (ALTERED | STOP); 377 } 378 379 int 380 linkup(ino_t orphan, ino_t parentdir) 381 { 382 struct ufs1_dinode *dp; 383 int lostdir; 384 ino_t oldlfdir; 385 struct inodesc idesc; 386 char tempname[BUFSIZ]; 387 struct uvnode *vp; 388 389 memset(&idesc, 0, sizeof(struct inodesc)); 390 vp = vget(fs, orphan); 391 dp = VTOD(vp); 392 lostdir = (dp->di_mode & IFMT) == IFDIR; 393 pwarn("UNREF %s ", lostdir ? "DIR" : "FILE"); 394 pinode(orphan); 395 if (preen && dp->di_size == 0) 396 return (0); 397 if (preen) 398 printf(" (RECONNECTED)\n"); 399 else if (reply("RECONNECT") == 0) 400 return (0); 401 if (lfdir == 0) { 402 dp = ginode(ROOTINO); 403 idesc.id_name = lfname; 404 idesc.id_type = DATA; 405 idesc.id_func = findino; 406 idesc.id_number = ROOTINO; 407 if ((ckinode(dp, &idesc) & FOUND) != 0) { 408 lfdir = idesc.id_parent; 409 } else { 410 pwarn("NO lost+found DIRECTORY"); 411 if (preen || reply("CREATE")) { 412 lfdir = allocdir(ROOTINO, (ino_t) 0, lfmode); 413 if (lfdir != 0) { 414 if (makeentry(ROOTINO, lfdir, lfname) != 0) { 415 if (preen) 416 printf(" (CREATED)\n"); 417 } else { 418 freedir(lfdir, ROOTINO); 419 lfdir = 0; 420 if (preen) 421 printf("\n"); 422 } 423 } 424 } 425 } 426 if (lfdir == 0) { 427 pfatal("SORRY. CANNOT CREATE lost+found DIRECTORY"); 428 printf("\n\n"); 429 return (0); 430 } 431 } 432 vp = vget(fs, lfdir); 433 dp = VTOD(vp); 434 if ((dp->di_mode & IFMT) != IFDIR) { 435 pfatal("lost+found IS NOT A DIRECTORY"); 436 if (reply("REALLOCATE") == 0) 437 return (0); 438 oldlfdir = lfdir; 439 if ((lfdir = allocdir(ROOTINO, (ino_t) 0, lfmode)) == 0) { 440 pfatal("SORRY. CANNOT CREATE lost+found DIRECTORY\n\n"); 441 return (0); 442 } 443 if ((changeino(ROOTINO, lfname, lfdir) & ALTERED) == 0) { 444 pfatal("SORRY. CANNOT CREATE lost+found DIRECTORY\n\n"); 445 return (0); 446 } 447 inodirty(VTOI(vp)); 448 idesc.id_type = ADDR; 449 idesc.id_func = pass4check; 450 idesc.id_number = oldlfdir; 451 adjust(&idesc, lncntp[oldlfdir] + 1); 452 lncntp[oldlfdir] = 0; 453 vp = vget(fs, lfdir); 454 dp = VTOD(vp); 455 } 456 if (statemap[lfdir] != DFOUND) { 457 pfatal("SORRY. NO lost+found DIRECTORY\n\n"); 458 return (0); 459 } 460 (void) lftempname(tempname, orphan); 461 if (makeentry(lfdir, orphan, tempname) == 0) { 462 pfatal("SORRY. NO SPACE IN lost+found DIRECTORY"); 463 printf("\n\n"); 464 return (0); 465 } 466 lncntp[orphan]--; 467 if (lostdir) { 468 if ((changeino(orphan, "..", lfdir) & ALTERED) == 0 && 469 parentdir != (ino_t) - 1) 470 (void) makeentry(orphan, lfdir, ".."); 471 vp = vget(fs, lfdir); 472 VTOI(vp)->i_ffs1_nlink++; 473 inodirty(VTOI(vp)); 474 lncntp[lfdir]++; 475 pwarn("DIR I=%u CONNECTED. ", orphan); 476 if (parentdir != (ino_t) - 1) 477 printf("PARENT WAS I=%u\n", parentdir); 478 if (preen == 0) 479 printf("\n"); 480 } 481 return (1); 482 } 483 484 /* 485 * fix an entry in a directory. 486 */ 487 int 488 changeino(ino_t dir, char *name, ino_t newnum) 489 { 490 struct inodesc idesc; 491 492 memset(&idesc, 0, sizeof(struct inodesc)); 493 idesc.id_type = DATA; 494 idesc.id_func = chgino; 495 idesc.id_number = dir; 496 idesc.id_fix = DONTKNOW; 497 idesc.id_name = name; 498 idesc.id_parent = newnum; /* new value for name */ 499 500 return (ckinode(ginode(dir), &idesc)); 501 } 502 503 /* 504 * make an entry in a directory 505 */ 506 int 507 makeentry(ino_t parent, ino_t ino, char *name) 508 { 509 struct ufs1_dinode *dp; 510 struct inodesc idesc; 511 char pathbuf[MAXPATHLEN + 1]; 512 struct uvnode *vp; 513 514 if (parent < ROOTINO || parent >= maxino || 515 ino < ROOTINO || ino >= maxino) 516 return (0); 517 memset(&idesc, 0, sizeof(struct inodesc)); 518 idesc.id_type = DATA; 519 idesc.id_func = mkentry; 520 idesc.id_number = parent; 521 idesc.id_parent = ino; /* this is the inode to enter */ 522 idesc.id_fix = DONTKNOW; 523 idesc.id_name = name; 524 vp = vget(fs, parent); 525 dp = VTOD(vp); 526 if (dp->di_size % DIRBLKSIZ) { 527 dp->di_size = roundup(dp->di_size, DIRBLKSIZ); 528 inodirty(VTOI(vp)); 529 } 530 if ((ckinode(dp, &idesc) & ALTERED) != 0) 531 return (1); 532 getpathname(pathbuf, sizeof(pathbuf), parent, parent); 533 vp = vget(fs, parent); 534 dp = VTOD(vp); 535 if (expanddir(vp, dp, pathbuf) == 0) 536 return (0); 537 return (ckinode(dp, &idesc) & ALTERED); 538 } 539 540 /* 541 * Attempt to expand the size of a directory 542 */ 543 static int 544 expanddir(struct uvnode *vp, struct ufs1_dinode *dp, char *name) 545 { 546 daddr_t lastbn, newblk; 547 struct ubuf *bp; 548 char *cp, firstblk[DIRBLKSIZ]; 549 550 lastbn = lblkno(fs, dp->di_size); 551 if (lastbn >= NDADDR - 1 || dp->di_db[lastbn] == 0 || dp->di_size == 0) 552 return (0); 553 dp->di_db[lastbn + 1] = dp->di_db[lastbn]; 554 dp->di_db[lastbn] = 0; 555 bp = getblk(vp, lastbn, fs->lfs_bsize); 556 VOP_BWRITE(bp); 557 dp->di_size += fs->lfs_bsize; 558 dp->di_blocks += btofsb(fs, fs->lfs_bsize); 559 bread(vp, dp->di_db[lastbn + 1], 560 (long) dblksize(fs, dp, lastbn + 1), NOCRED, &bp); 561 if (bp->b_flags & B_ERROR) 562 goto bad; 563 memcpy(firstblk, bp->b_data, DIRBLKSIZ); 564 bread(vp, newblk, fs->lfs_bsize, NOCRED, &bp); 565 if (bp->b_flags & B_ERROR) 566 goto bad; 567 memcpy(bp->b_data, firstblk, DIRBLKSIZ); 568 for (cp = &bp->b_data[DIRBLKSIZ]; 569 cp < &bp->b_data[fs->lfs_bsize]; 570 cp += DIRBLKSIZ) 571 memcpy(cp, &emptydir, sizeof emptydir); 572 VOP_BWRITE(bp); 573 bread(vp, dp->di_db[lastbn + 1], 574 (long) dblksize(fs, dp, lastbn + 1), NOCRED, &bp); 575 if (bp->b_flags & B_ERROR) 576 goto bad; 577 memcpy(bp->b_data, &emptydir, sizeof emptydir); 578 pwarn("NO SPACE LEFT IN %s", name); 579 if (preen) 580 printf(" (EXPANDED)\n"); 581 else if (reply("EXPAND") == 0) 582 goto bad; 583 VOP_BWRITE(bp); 584 inodirty(VTOI(vp)); 585 return (1); 586 bad: 587 dp->di_db[lastbn] = dp->di_db[lastbn + 1]; 588 dp->di_db[lastbn + 1] = 0; 589 dp->di_size -= fs->lfs_bsize; 590 dp->di_blocks -= btofsb(fs, fs->lfs_bsize); 591 freeblk(newblk, fs->lfs_frag); 592 return (0); 593 } 594 595 /* 596 * allocate a new directory 597 */ 598 int 599 allocdir(ino_t parent, ino_t request, int mode) 600 { 601 ino_t ino; 602 char *cp; 603 struct ufs1_dinode *dp; 604 struct ubuf *bp; 605 struct dirtemplate *dirp; 606 struct uvnode *vp; 607 608 ino = allocino(request, IFDIR | mode); 609 dirp = &dirhead; 610 dirp->dot_ino = ino; 611 dirp->dotdot_ino = parent; 612 vp = vget(fs, ino); 613 dp = VTOD(vp); 614 bread(vp, dp->di_db[0], fs->lfs_fsize, NOCRED, &bp); 615 if (bp->b_flags & B_ERROR) { 616 brelse(bp); 617 freeino(ino); 618 return (0); 619 } 620 memcpy(bp->b_data, dirp, sizeof(struct dirtemplate)); 621 for (cp = &bp->b_data[DIRBLKSIZ]; 622 cp < &bp->b_data[fs->lfs_fsize]; 623 cp += DIRBLKSIZ) 624 memcpy(cp, &emptydir, sizeof emptydir); 625 VOP_BWRITE(bp); 626 dp->di_nlink = 2; 627 inodirty(VTOI(vp)); 628 if (ino == ROOTINO) { 629 lncntp[ino] = dp->di_nlink; 630 cacheino(dp, ino); 631 return (ino); 632 } 633 if (statemap[parent] != DSTATE && statemap[parent] != DFOUND) { 634 freeino(ino); 635 return (0); 636 } 637 cacheino(dp, ino); 638 statemap[ino] = statemap[parent]; 639 if (statemap[ino] == DSTATE) { 640 lncntp[ino] = dp->di_nlink; 641 lncntp[parent]++; 642 } 643 vp = vget(fs, parent); 644 dp = VTOD(vp); 645 dp->di_nlink++; 646 inodirty(VTOI(vp)); 647 return (ino); 648 } 649 650 /* 651 * free a directory inode 652 */ 653 static void 654 freedir(ino_t ino, ino_t parent) 655 { 656 struct uvnode *vp; 657 658 if (ino != parent) { 659 vp = vget(fs, parent); 660 VTOI(vp)->i_ffs1_nlink--; 661 inodirty(VTOI(vp)); 662 } 663 freeino(ino); 664 } 665 666 /* 667 * generate a temporary name for the lost+found directory. 668 */ 669 static int 670 lftempname(char *bufp, ino_t ino) 671 { 672 ino_t in; 673 char *cp; 674 int namlen; 675 676 cp = bufp + 2; 677 for (in = maxino; in > 0; in /= 10) 678 cp++; 679 *--cp = 0; 680 namlen = cp - bufp; 681 in = ino; 682 while (cp > bufp) { 683 *--cp = (in % 10) + '0'; 684 in /= 10; 685 } 686 *cp = '#'; 687 return (namlen); 688 } 689
Indexes created Mon Sep 29 21:09:56 GMT 2025