utilities.c revision 1.44
1 /* $NetBSD: utilities.c,v 1.44 2004/01/15 14:49:28 dbj 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/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)utilities.c 8.6 (Berkeley) 5/19/95"; 36 #else 37 __RCSID("$NetBSD: utilities.c,v 1.44 2004/01/15 14:49:28 dbj Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <sys/param.h> 42 #include <sys/time.h> 43 44 #include <ufs/ufs/dinode.h> 45 #include <ufs/ufs/dir.h> 46 #include <ufs/ffs/fs.h> 47 #include <ufs/ffs/ffs_extern.h> 48 #include <ufs/ufs/ufs_bswap.h> 49 50 #include <ctype.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 58 #include "fsutil.h" 59 #include "fsck.h" 60 #include "extern.h" 61 62 long diskreads, totalreads; /* Disk cache statistics */ 63 64 static void rwerror __P((char *, daddr_t)); 65 66 extern int returntosingle; 67 68 int 69 ftypeok(dp) 70 union dinode *dp; 71 { 72 switch (iswap16(DIP(dp, mode)) & IFMT) { 73 74 case IFDIR: 75 case IFREG: 76 case IFBLK: 77 case IFCHR: 78 case IFLNK: 79 case IFSOCK: 80 case IFIFO: 81 return (1); 82 83 default: 84 if (debug) 85 printf("bad file type 0%o\n", iswap16(DIP(dp, mode))); 86 return (0); 87 } 88 } 89 90 int 91 reply(question) 92 char *question; 93 { 94 int persevere; 95 char c; 96 97 if (preen) 98 pfatal("INTERNAL ERROR: GOT TO reply()"); 99 persevere = !strcmp(question, "CONTINUE"); 100 printf("\n"); 101 if (!persevere && (nflag || fswritefd < 0)) { 102 printf("%s? no\n\n", question); 103 resolved = 0; 104 return (0); 105 } 106 if (yflag || (persevere && nflag)) { 107 printf("%s? yes\n\n", question); 108 return (1); 109 } 110 do { 111 printf("%s? [yn] ", question); 112 (void) fflush(stdout); 113 c = getc(stdin); 114 while (c != '\n' && getc(stdin) != '\n') { 115 if (feof(stdin)) { 116 resolved = 0; 117 return (0); 118 } 119 } 120 } while (c != 'y' && c != 'Y' && c != 'n' && c != 'N'); 121 printf("\n"); 122 if (c == 'y' || c == 'Y') 123 return (1); 124 resolved = 0; 125 return (0); 126 } 127 128 /* 129 * Malloc buffers and set up cache. 130 */ 131 void 132 bufinit() 133 { 134 struct bufarea *bp; 135 long bufcnt, i; 136 char *bufp; 137 138 pbp = pdirbp = (struct bufarea *)0; 139 bufp = malloc((unsigned int)sblock->fs_bsize); 140 if (bufp == 0) 141 errx(EEXIT, "cannot allocate buffer pool"); 142 cgblk.b_un.b_buf = bufp; 143 initbarea(&cgblk); 144 bufp = malloc((unsigned int)APPLEUFS_LABEL_SIZE); 145 if (bufp == 0) 146 errx(EEXIT, "cannot allocate buffer pool"); 147 appleufsblk.b_un.b_buf = bufp; 148 initbarea(&appleufsblk); 149 bufhead.b_next = bufhead.b_prev = &bufhead; 150 bufcnt = MAXBUFSPACE / sblock->fs_bsize; 151 if (bufcnt < MINBUFS) 152 bufcnt = MINBUFS; 153 for (i = 0; i < bufcnt; i++) { 154 bp = (struct bufarea *)malloc(sizeof(struct bufarea)); 155 bufp = malloc((unsigned int)sblock->fs_bsize); 156 if (bp == NULL || bufp == NULL) { 157 if (i >= MINBUFS) 158 break; 159 errx(EEXIT, "cannot allocate buffer pool"); 160 } 161 bp->b_un.b_buf = bufp; 162 bp->b_prev = &bufhead; 163 bp->b_next = bufhead.b_next; 164 bufhead.b_next->b_prev = bp; 165 bufhead.b_next = bp; 166 initbarea(bp); 167 } 168 bufhead.b_size = i; /* save number of buffers */ 169 } 170 171 /* 172 * Manage a cache of directory blocks. 173 */ 174 struct bufarea * 175 getdatablk(blkno, size) 176 daddr_t blkno; 177 long size; 178 { 179 struct bufarea *bp; 180 181 for (bp = bufhead.b_next; bp != &bufhead; bp = bp->b_next) 182 if (bp->b_bno == fsbtodb(sblock, blkno)) 183 goto foundit; 184 for (bp = bufhead.b_prev; bp != &bufhead; bp = bp->b_prev) 185 if ((bp->b_flags & B_INUSE) == 0) 186 break; 187 if (bp == &bufhead) 188 errx(EEXIT, "deadlocked buffer pool"); 189 /* fall through */ 190 foundit: 191 getblk(bp, blkno, size); 192 bp->b_prev->b_next = bp->b_next; 193 bp->b_next->b_prev = bp->b_prev; 194 bp->b_prev = &bufhead; 195 bp->b_next = bufhead.b_next; 196 bufhead.b_next->b_prev = bp; 197 bufhead.b_next = bp; 198 bp->b_flags |= B_INUSE; 199 return (bp); 200 } 201 202 void 203 getblk(bp, blk, size) 204 struct bufarea *bp; 205 daddr_t blk; 206 long size; 207 { 208 daddr_t dblk; 209 210 dblk = fsbtodb(sblock, blk); 211 totalreads++; 212 if (bp->b_bno != dblk) { 213 flush(fswritefd, bp); 214 diskreads++; 215 bp->b_errs = bread(fsreadfd, bp->b_un.b_buf, dblk, size); 216 bp->b_bno = dblk; 217 bp->b_size = size; 218 } 219 } 220 221 void 222 flush(fd, bp) 223 int fd; 224 struct bufarea *bp; 225 { 226 int i, j; 227 struct csum *ccsp; 228 229 if (!bp->b_dirty) 230 return; 231 if (bp->b_errs != 0) 232 pfatal("WRITING %sZERO'ED BLOCK %lld TO DISK\n", 233 (bp->b_errs == bp->b_size / dev_bsize) ? "" : "PARTIALLY ", 234 (long long)bp->b_bno); 235 bp->b_dirty = 0; 236 bp->b_errs = 0; 237 bwrite(fd, bp->b_un.b_buf, bp->b_bno, (long)bp->b_size); 238 if (bp != &sblk) 239 return; 240 for (i = 0, j = 0; i < sblock->fs_cssize; i += sblock->fs_bsize, j++) { 241 int size = sblock->fs_cssize - i < sblock->fs_bsize ? 242 sblock->fs_cssize - i : sblock->fs_bsize; 243 ccsp = (struct csum *)((char *)sblock->fs_csp + i); 244 if (needswap) 245 ffs_csum_swap(ccsp, ccsp, size); 246 bwrite(fswritefd, (char *)ccsp, 247 fsbtodb(sblock, sblock->fs_csaddr + j * sblock->fs_frag), 248 size); 249 if (needswap) 250 ffs_csum_swap(ccsp, ccsp, size); 251 } 252 } 253 254 static void 255 rwerror(mesg, blk) 256 char *mesg; 257 daddr_t blk; 258 { 259 260 if (preen == 0) 261 printf("\n"); 262 pfatal("CANNOT %s: BLK %lld", mesg, (long long)blk); 263 if (reply("CONTINUE") == 0) 264 exit(EEXIT); 265 } 266 267 void 268 ckfini() 269 { 270 struct bufarea *bp, *nbp; 271 int ofsmodified, cnt = 0; 272 273 if (fswritefd < 0) { 274 (void)close(fsreadfd); 275 return; 276 } 277 flush(fswritefd, &sblk); 278 if (havesb && bflag != 0 && 279 (preen || reply("UPDATE STANDARD SUPERBLOCK"))) { 280 if (preen) 281 pwarn("UPDATING STANDARD SUPERBLOCK"); 282 if (!is_ufs2 && (sblock->fs_old_flags & FS_FLAGS_UPDATED) == 0) 283 sblk.b_bno = SBLOCK_UFS1 / dev_bsize; 284 else 285 sblk.b_bno = sblock->fs_sblockloc / dev_bsize; 286 sbdirty(); 287 flush(fswritefd, &sblk); 288 } 289 flush(fswritefd, &appleufsblk); 290 free(appleufsblk.b_un.b_buf); 291 flush(fswritefd, &cgblk); 292 free(cgblk.b_un.b_buf); 293 for (bp = bufhead.b_prev; bp && bp != &bufhead; bp = nbp) { 294 cnt++; 295 flush(fswritefd, bp); 296 nbp = bp->b_prev; 297 free(bp->b_un.b_buf); 298 free((char *)bp); 299 } 300 if (bufhead.b_size != cnt) 301 errx(EEXIT, "Panic: lost %d buffers", bufhead.b_size - cnt); 302 pbp = pdirbp = (struct bufarea *)0; 303 if (markclean && (sblock->fs_clean & FS_ISCLEAN) == 0) { 304 /* 305 * Mark the file system as clean, and sync the superblock. 306 */ 307 if (preen) 308 pwarn("MARKING FILE SYSTEM CLEAN\n"); 309 else if (!reply("MARK FILE SYSTEM CLEAN")) 310 markclean = 0; 311 if (markclean) { 312 sblock->fs_clean = FS_ISCLEAN; 313 sblock->fs_pendingblocks = 0; 314 sblock->fs_pendinginodes = 0; 315 sbdirty(); 316 ofsmodified = fsmodified; 317 flush(fswritefd, &sblk); 318 #if LITE2BORKEN 319 fsmodified = ofsmodified; 320 #endif 321 if (!preen) 322 printf( 323 "\n***** FILE SYSTEM MARKED CLEAN *****\n"); 324 } 325 } 326 if (debug) 327 printf("cache missed %ld of %ld (%d%%)\n", diskreads, 328 totalreads, (int)(diskreads * 100 / totalreads)); 329 (void)close(fsreadfd); 330 (void)close(fswritefd); 331 } 332 333 int 334 bread(fd, buf, blk, size) 335 int fd; 336 char *buf; 337 daddr_t blk; 338 long size; 339 { 340 char *cp; 341 int i, errs; 342 off_t offset; 343 344 offset = blk; 345 offset *= dev_bsize; 346 if (lseek(fd, offset, 0) < 0) 347 rwerror("SEEK", blk); 348 else if (read(fd, buf, (int)size) == size) 349 return (0); 350 rwerror("READ", blk); 351 if (lseek(fd, offset, 0) < 0) 352 rwerror("SEEK", blk); 353 errs = 0; 354 memset(buf, 0, (size_t)size); 355 printf("THE FOLLOWING DISK SECTORS COULD NOT BE READ:"); 356 for (cp = buf, i = 0; i < size; i += secsize, cp += secsize) { 357 if (read(fd, cp, (int)secsize) != secsize) { 358 (void)lseek(fd, offset + i + secsize, 0); 359 if (secsize != dev_bsize && dev_bsize != 1) 360 printf(" %lld (%lld),", 361 (long long)((blk*dev_bsize + i) / secsize), 362 (long long)(blk + i / dev_bsize)); 363 else 364 printf(" %lld,", 365 (long long)(blk + i / dev_bsize)); 366 errs++; 367 } 368 } 369 printf("\n"); 370 return (errs); 371 } 372 373 void 374 bwrite(fd, buf, blk, size) 375 int fd; 376 char *buf; 377 daddr_t blk; 378 long size; 379 { 380 int i; 381 char *cp; 382 off_t offset; 383 384 if (fd < 0) 385 return; 386 offset = blk; 387 offset *= dev_bsize; 388 if (lseek(fd, offset, 0) < 0) 389 rwerror("SEEK", blk); 390 else if (write(fd, buf, (int)size) == size) { 391 fsmodified = 1; 392 return; 393 } 394 rwerror("WRITE", blk); 395 if (lseek(fd, offset, 0) < 0) 396 rwerror("SEEK", blk); 397 printf("THE FOLLOWING SECTORS COULD NOT BE WRITTEN:"); 398 for (cp = buf, i = 0; i < size; i += dev_bsize, cp += dev_bsize) 399 if (write(fd, cp, (int)dev_bsize) != dev_bsize) { 400 (void)lseek(fd, offset + i + dev_bsize, 0); 401 printf(" %lld,", (long long)(blk + i / dev_bsize)); 402 } 403 printf("\n"); 404 return; 405 } 406 407 /* 408 * allocate a data block with the specified number of fragments 409 */ 410 daddr_t 411 allocblk(frags) 412 long frags; 413 { 414 int i, j, k, cg, baseblk; 415 struct cg *cgp = cgrp; 416 417 if (frags <= 0 || frags > sblock->fs_frag) 418 return (0); 419 for (i = 0; i < maxfsblock - sblock->fs_frag; i += sblock->fs_frag) { 420 for (j = 0; j <= sblock->fs_frag - frags; j++) { 421 if (testbmap(i + j)) 422 continue; 423 for (k = 1; k < frags; k++) 424 if (testbmap(i + j + k)) 425 break; 426 if (k < frags) { 427 j += k; 428 continue; 429 } 430 cg = dtog(sblock, i + j); 431 getblk(&cgblk, cgtod(sblock, cg), sblock->fs_cgsize); 432 memcpy(cgp, cgblk.b_un.b_cg, sblock->fs_cgsize); 433 if ((doswap && !needswap) || (!doswap && needswap)) 434 ffs_cg_swap(cgblk.b_un.b_cg, cgp, sblock); 435 if (!cg_chkmagic(cgp, 0)) 436 pfatal("CG %d: ALLOCBLK: BAD MAGIC NUMBER\n", 437 cg); 438 baseblk = dtogd(sblock, i + j); 439 for (k = 0; k < frags; k++) { 440 setbmap(i + j + k); 441 clrbit(cg_blksfree(cgp, 0), baseblk + k); 442 } 443 n_blks += frags; 444 if (frags == sblock->fs_frag) 445 cgp->cg_cs.cs_nbfree--; 446 else 447 cgp->cg_cs.cs_nffree -= frags; 448 cgdirty(); 449 return (i + j); 450 } 451 } 452 return (0); 453 } 454 455 /* 456 * Free a previously allocated block 457 */ 458 void 459 freeblk(blkno, frags) 460 daddr_t blkno; 461 long frags; 462 { 463 struct inodesc idesc; 464 465 idesc.id_blkno = blkno; 466 idesc.id_numfrags = frags; 467 (void)pass4check(&idesc); 468 } 469 470 /* 471 * Find a pathname 472 */ 473 void 474 getpathname(namebuf, namebuflen, curdir, ino) 475 char *namebuf; 476 size_t namebuflen; 477 ino_t curdir, ino; 478 { 479 int len; 480 char *cp; 481 struct inodesc idesc; 482 static int busy = 0; 483 struct inostat *info; 484 485 if (curdir == ino && ino == ROOTINO) { 486 (void)strlcpy(namebuf, "/", namebuflen); 487 return; 488 } 489 info = inoinfo(curdir); 490 if (busy || (info->ino_state != DSTATE && info->ino_state != DFOUND)) { 491 (void)strlcpy(namebuf, "?", namebuflen); 492 return; 493 } 494 busy = 1; 495 memset(&idesc, 0, sizeof(struct inodesc)); 496 idesc.id_type = DATA; 497 idesc.id_fix = IGNORE; 498 cp = &namebuf[MAXPATHLEN - 1]; 499 *cp = '\0'; 500 if (curdir != ino) { 501 idesc.id_parent = curdir; 502 goto namelookup; 503 } 504 while (ino != ROOTINO) { 505 idesc.id_number = ino; 506 idesc.id_func = findino; 507 idesc.id_name = ".."; 508 if ((ckinode(ginode(ino), &idesc) & FOUND) == 0) 509 break; 510 namelookup: 511 idesc.id_number = idesc.id_parent; 512 idesc.id_parent = ino; 513 idesc.id_func = findname; 514 idesc.id_name = namebuf; 515 if ((ckinode(ginode(idesc.id_number), &idesc)&FOUND) == 0) 516 break; 517 len = strlen(namebuf); 518 cp -= len; 519 memmove(cp, namebuf, (size_t)len); 520 *--cp = '/'; 521 if (cp < &namebuf[MAXNAMLEN]) 522 break; 523 ino = idesc.id_number; 524 } 525 busy = 0; 526 if (ino != ROOTINO) 527 *--cp = '?'; 528 memmove(namebuf, cp, (size_t)(&namebuf[MAXPATHLEN] - cp)); 529 } 530 531 void 532 catch(sig) 533 int sig; 534 { 535 if (!doinglevel2) { 536 markclean = 0; 537 ckfini(); 538 } 539 exit(12); 540 } 541 542 /* 543 * When preening, allow a single quit to signal 544 * a special exit after filesystem checks complete 545 * so that reboot sequence may be interrupted. 546 */ 547 void 548 catchquit(sig) 549 int sig; 550 { 551 int errsave = errno; 552 553 printf("returning to single-user after file system check\n"); 554 returntosingle = 1; 555 (void)signal(SIGQUIT, SIG_DFL); 556 errno = errsave; 557 } 558 559 /* 560 * Ignore a single quit signal; wait and flush just in case. 561 * Used by child processes in preen. 562 */ 563 void 564 voidquit(sig) 565 int sig; 566 { 567 int errsave = errno; 568 569 sleep(1); 570 (void)signal(SIGQUIT, SIG_IGN); 571 (void)signal(SIGQUIT, SIG_DFL); 572 errno = errsave; 573 } 574 575 /* 576 * determine whether an inode should be fixed. 577 */ 578 int 579 dofix(idesc, msg) 580 struct inodesc *idesc; 581 char *msg; 582 { 583 584 switch (idesc->id_fix) { 585 586 case DONTKNOW: 587 if (idesc->id_type == DATA) 588 direrror(idesc->id_number, msg); 589 else 590 pwarn("%s", msg); 591 if (preen) { 592 printf(" (SALVAGED)\n"); 593 idesc->id_fix = FIX; 594 return (ALTERED); 595 } 596 if (reply("SALVAGE") == 0) { 597 idesc->id_fix = NOFIX; 598 return (0); 599 } 600 idesc->id_fix = FIX; 601 return (ALTERED); 602 603 case FIX: 604 return (ALTERED); 605 606 case NOFIX: 607 case IGNORE: 608 return (0); 609 610 default: 611 errx(EEXIT, "UNKNOWN INODESC FIX MODE %d", idesc->id_fix); 612 } 613 /* NOTREACHED */ 614 return (0); 615 } 616 617 void 618 copyback_cg(blk) 619 struct bufarea *blk; 620 { 621 622 memcpy(blk->b_un.b_cg, cgrp, sblock->fs_cgsize); 623 if (needswap) 624 ffs_cg_swap(cgrp, blk->b_un.b_cg, sblock); 625 } 626 627 void 628 infohandler(int sig) 629 { 630 got_siginfo = 1; 631 } 632 633 /* 634 * Look up state information for an inode. 635 */ 636 struct inostat * 637 inoinfo(ino_t inum) 638 { 639 static struct inostat unallocated = { USTATE, 0, 0 }; 640 struct inostatlist *ilp; 641 int iloff; 642 643 if (inum > maxino) 644 errx(EEXIT, "inoinfo: inumber %d out of range", inum); 645 ilp = &inostathead[inum / sblock->fs_ipg]; 646 iloff = inum % sblock->fs_ipg; 647 if (iloff >= ilp->il_numalloced) 648 return (&unallocated); 649 return (&ilp->il_stat[iloff]); 650 } 651 652 void 653 sb_oldfscompat_read(struct fs *fs, struct fs **fssave) 654 { 655 if ((fs->fs_magic != FS_UFS1_MAGIC) || 656 (fs->fs_old_flags & FS_FLAGS_UPDATED)) 657 return; 658 659 /* Save a copy of fields that may be modified for compatibility */ 660 if (fssave) { 661 if (!*fssave) 662 *fssave = malloc(sizeof(struct fs)); 663 if (!*fssave) 664 errx(EEXIT, "cannot allocate space for compat store"); 665 memmove(*fssave, fs, sizeof(struct fs)); 666 667 if (debug) 668 printf("detected ufs1 superblock not yet updated for ufs2 kernels\n"); 669 670 if (doswap) { 671 uint16_t postbl[256]; 672 int i, n; 673 674 if (fs->fs_old_postblformat == FS_42POSTBLFMT) 675 n = 256; 676 else 677 n = 128; 678 679 /* extract the postbl from the unswapped superblock */ 680 if (!needswap) 681 ffs_sb_swap(*fssave, *fssave); 682 memmove(postbl, (&(*fssave)->fs_old_postbl_start), n); 683 if (!needswap) 684 ffs_sb_swap(*fssave, *fssave); 685 686 /* Now swap it */ 687 for (i=0; i < n; i++) 688 postbl[i] = bswap16(postbl[i]); 689 690 /* And put it back such that it will get correctly 691 * unscrambled if it is swapped again on the way out 692 */ 693 if (needswap) 694 ffs_sb_swap(*fssave, *fssave); 695 memmove((&(*fssave)->fs_old_postbl_start), postbl, n); 696 if (needswap) 697 ffs_sb_swap(*fssave, *fssave); 698 } 699 700 } 701 702 /* These fields will be overwritten by their 703 * original values in fs_oldfscompat_write, so it is harmless 704 * to modify them here. 705 */ 706 fs->fs_cstotal.cs_ndir = 707 fs->fs_old_cstotal.cs_ndir; 708 fs->fs_cstotal.cs_nbfree = 709 fs->fs_old_cstotal.cs_nbfree; 710 fs->fs_cstotal.cs_nifree = 711 fs->fs_old_cstotal.cs_nifree; 712 fs->fs_cstotal.cs_nffree = 713 fs->fs_old_cstotal.cs_nffree; 714 715 fs->fs_maxbsize = fs->fs_bsize; 716 fs->fs_time = fs->fs_old_time; 717 fs->fs_size = fs->fs_old_size; 718 fs->fs_dsize = fs->fs_old_dsize; 719 fs->fs_csaddr = fs->fs_old_csaddr; 720 fs->fs_sblockloc = SBLOCK_UFS1; 721 722 fs->fs_flags = fs->fs_old_flags; 723 724 if (fs->fs_old_postblformat == FS_42POSTBLFMT) { 725 fs->fs_old_nrpos = 8; 726 fs->fs_old_npsect = fs->fs_old_nsect; 727 fs->fs_old_interleave = 1; 728 fs->fs_old_trackskew = 0; 729 } 730 } 731 732 void 733 sb_oldfscompat_write(struct fs *fs, struct fs *fssave) 734 { 735 if ((fs->fs_magic != FS_UFS1_MAGIC) || 736 (fs->fs_old_flags & FS_FLAGS_UPDATED)) 737 return; 738 739 fs->fs_old_flags = fs->fs_flags; 740 fs->fs_old_time = fs->fs_time; 741 fs->fs_old_cstotal.cs_ndir = fs->fs_cstotal.cs_ndir; 742 fs->fs_old_cstotal.cs_nbfree = fs->fs_cstotal.cs_nbfree; 743 fs->fs_old_cstotal.cs_nifree = fs->fs_cstotal.cs_nifree; 744 fs->fs_old_cstotal.cs_nffree = fs->fs_cstotal.cs_nffree; 745 746 fs->fs_flags = fssave->fs_flags; 747 748 if (fs->fs_old_postblformat == FS_42POSTBLFMT) { 749 fs->fs_old_nrpos = fssave->fs_old_nrpos; 750 fs->fs_old_npsect = fssave->fs_old_npsect; 751 fs->fs_old_interleave = fssave->fs_old_interleave; 752 fs->fs_old_trackskew = fssave->fs_old_trackskew; 753 } 754 755 memmove(&fs->fs_old_postbl_start, &fssave->fs_old_postbl_start, 756 ((fs->fs_old_postblformat == FS_42POSTBLFMT) ? 757 512 : 256)); 758 } 759
Indexes created Wed Sep 24 15:09:51 GMT 2025