setup.c revision 1.31
1 /* $NetBSD: setup.c,v 1.31 1997/09/20 06:16:33 lukem 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)setup.c 8.10 (Berkeley) 5/9/95"; 40 #else 41 __RCSID("$NetBSD: setup.c,v 1.31 1997/09/20 06:16:33 lukem Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #define DKTYPENAMES 46 #include <sys/param.h> 47 #include <sys/time.h> 48 #include <sys/stat.h> 49 #include <sys/ioctl.h> 50 #include <sys/disklabel.h> 51 #include <sys/file.h> 52 53 #include <ufs/ufs/dinode.h> 54 #include <ufs/ffs/fs.h> 55 56 #include <ctype.h> 57 #include <err.h> 58 #include <errno.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 63 #include "fsck.h" 64 #include "extern.h" 65 #include "fsutil.h" 66 67 struct bufarea asblk; 68 #define altsblock (*asblk.b_un.b_fs) 69 #define POWEROF2(num) (((num) & ((num) - 1)) == 0) 70 71 static void badsb __P((int, char *)); 72 static int calcsb __P((char *, int, struct fs *)); 73 static struct disklabel *getdisklabel __P((char *, int)); 74 static int readsb __P((int)); 75 76 /* 77 * Read in a superblock finding an alternate if necessary. 78 * Return 1 if successful, 0 if unsuccessful, -1 if filesystem 79 * is already clean (preen mode only). 80 */ 81 int 82 setup(dev) 83 char *dev; 84 { 85 long cg, size, asked, i, j; 86 long bmapsize; 87 struct disklabel *lp; 88 off_t sizepb; 89 struct stat statb; 90 struct fs proto; 91 int doskipclean; 92 u_int64_t maxfilesize; 93 94 havesb = 0; 95 fswritefd = -1; 96 doskipclean = skipclean; 97 if (stat(dev, &statb) < 0) { 98 printf("Can't stat %s: %s\n", dev, strerror(errno)); 99 return (0); 100 } 101 if (!S_ISCHR(statb.st_mode)) { 102 pfatal("%s is not a character device", dev); 103 if (reply("CONTINUE") == 0) 104 return (0); 105 } 106 if ((fsreadfd = open(dev, O_RDONLY)) < 0) { 107 printf("Can't open %s: %s\n", dev, strerror(errno)); 108 return (0); 109 } 110 if (preen == 0) 111 printf("** %s", dev); 112 if (nflag || (fswritefd = open(dev, O_WRONLY)) < 0) { 113 fswritefd = -1; 114 if (preen) 115 pfatal("NO WRITE ACCESS"); 116 printf(" (NO WRITE)"); 117 } 118 if (preen == 0) 119 printf("\n"); 120 fsmodified = 0; 121 lfdir = 0; 122 initbarea(&sblk); 123 initbarea(&asblk); 124 sblk.b_un.b_buf = malloc(SBSIZE); 125 asblk.b_un.b_buf = malloc(SBSIZE); 126 if (sblk.b_un.b_buf == NULL || asblk.b_un.b_buf == NULL) 127 errx(EEXIT, "cannot allocate space for superblock"); 128 if ((lp = getdisklabel(NULL, fsreadfd)) != NULL) 129 dev_bsize = secsize = lp->d_secsize; 130 else 131 dev_bsize = secsize = DEV_BSIZE; 132 /* 133 * Read in the superblock, looking for alternates if necessary 134 */ 135 if (readsb(1) == 0) { 136 skipclean = 0; 137 if (bflag || preen || calcsb(dev, fsreadfd, &proto) == 0) 138 return(0); 139 if (reply("LOOK FOR ALTERNATE SUPERBLOCKS") == 0) 140 return (0); 141 for (cg = 0; cg < proto.fs_ncg; cg++) { 142 bflag = fsbtodb(&proto, cgsblock(&proto, cg)); 143 if (readsb(0) != 0) 144 break; 145 } 146 if (cg >= proto.fs_ncg) { 147 printf("%s %s\n%s %s\n%s %s\n", 148 "SEARCH FOR ALTERNATE SUPER-BLOCK", 149 "FAILED. YOU MUST USE THE", 150 "-b OPTION TO FSCK_FFS TO SPECIFY THE", 151 "LOCATION OF AN ALTERNATE", 152 "SUPER-BLOCK TO SUPPLY NEEDED", 153 "INFORMATION; SEE fsck_ffs(8)."); 154 return(0); 155 } 156 doskipclean = 0; 157 pwarn("USING ALTERNATE SUPERBLOCK AT %d\n", bflag); 158 } 159 if (debug) 160 printf("clean = %d\n", sblock.fs_clean); 161 if (sblock.fs_clean & FS_ISCLEAN) { 162 if (doskipclean) { 163 pwarn("%sile system is clean; not checking\n", 164 preen ? "f" : "** F"); 165 return (-1); 166 } 167 if (!preen) 168 pwarn("** File system is already clean\n"); 169 } 170 maxfsblock = sblock.fs_size; 171 maxino = sblock.fs_ncg * sblock.fs_ipg; 172 sizepb = sblock.fs_bsize; 173 maxfilesize = sblock.fs_bsize * NDADDR - 1; 174 for (i = 0; i < NIADDR; i++) { 175 sizepb *= NINDIR(&sblock); 176 maxfilesize += sizepb; 177 } 178 /* 179 * Check and potentially fix certain fields in the super block. 180 */ 181 if (sblock.fs_optim != FS_OPTTIME && sblock.fs_optim != FS_OPTSPACE) { 182 pfatal("UNDEFINED OPTIMIZATION IN SUPERBLOCK"); 183 if (reply("SET TO DEFAULT") == 1) { 184 sblock.fs_optim = FS_OPTTIME; 185 sbdirty(); 186 } 187 } 188 if ((sblock.fs_minfree < 0 || sblock.fs_minfree > 99)) { 189 pfatal("IMPOSSIBLE MINFREE=%d IN SUPERBLOCK", 190 sblock.fs_minfree); 191 if (reply("SET TO DEFAULT") == 1) { 192 sblock.fs_minfree = 10; 193 sbdirty(); 194 } 195 } 196 if (sblock.fs_interleave < 1 || 197 sblock.fs_interleave > sblock.fs_nsect) { 198 pwarn("IMPOSSIBLE INTERLEAVE=%d IN SUPERBLOCK", 199 sblock.fs_interleave); 200 sblock.fs_interleave = 1; 201 if (preen) 202 printf(" (FIXED)\n"); 203 if (preen || reply("SET TO DEFAULT") == 1) { 204 sbdirty(); 205 dirty(&asblk); 206 } 207 } 208 if (sblock.fs_npsect < sblock.fs_nsect || 209 sblock.fs_npsect > sblock.fs_nsect*2) { 210 pwarn("IMPOSSIBLE NPSECT=%d IN SUPERBLOCK", 211 sblock.fs_npsect); 212 sblock.fs_npsect = sblock.fs_nsect; 213 if (preen) 214 printf(" (FIXED)\n"); 215 if (preen || reply("SET TO DEFAULT") == 1) { 216 sbdirty(); 217 dirty(&asblk); 218 } 219 } 220 if (sblock.fs_bmask != ~(sblock.fs_bsize - 1)) { 221 pwarn("INCORRECT BMASK=0x%x IN SUPERBLOCK", 222 sblock.fs_bmask); 223 sblock.fs_bmask = ~(sblock.fs_bsize - 1); 224 if (preen) 225 printf(" (FIXED)\n"); 226 if (preen || reply("FIX") == 1) { 227 sbdirty(); 228 dirty(&asblk); 229 } 230 } 231 if (sblock.fs_fmask != ~(sblock.fs_fsize - 1)) { 232 pwarn("INCORRECT FMASK=0x%x IN SUPERBLOCK", 233 sblock.fs_fmask); 234 sblock.fs_fmask = ~(sblock.fs_fsize - 1); 235 if (preen) 236 printf(" (FIXED)\n"); 237 if (preen || reply("FIX") == 1) { 238 sbdirty(); 239 dirty(&asblk); 240 } 241 } 242 if (sblock.fs_inodefmt >= FS_44INODEFMT) { 243 if (sblock.fs_maxfilesize != maxfilesize) { 244 pwarn("INCORRECT MAXFILESIZE=%qd IN SUPERBLOCK", 245 (unsigned long long)sblock.fs_maxfilesize); 246 sblock.fs_maxfilesize = maxfilesize; 247 if (preen) 248 printf(" (FIXED)\n"); 249 if (preen || reply("FIX") == 1) { 250 sbdirty(); 251 dirty(&asblk); 252 } 253 } 254 if (sblock.fs_maxsymlinklen != MAXSYMLINKLEN) { 255 pwarn("INCORRECT MAXSYMLINKLEN=%d IN SUPERBLOCK", 256 sblock.fs_maxsymlinklen); 257 sblock.fs_maxsymlinklen = MAXSYMLINKLEN; 258 if (preen) 259 printf(" (FIXED)\n"); 260 if (preen || reply("FIX") == 1) { 261 sbdirty(); 262 dirty(&asblk); 263 } 264 } 265 if (sblock.fs_qbmask != ~sblock.fs_bmask) { 266 pwarn("INCORRECT QBMASK=%qx IN SUPERBLOCK", 267 (unsigned long long)sblock.fs_qbmask); 268 sblock.fs_qbmask = ~sblock.fs_bmask; 269 if (preen) 270 printf(" (FIXED)\n"); 271 if (preen || reply("FIX") == 1) { 272 sbdirty(); 273 dirty(&asblk); 274 } 275 } 276 if (sblock.fs_qfmask != ~sblock.fs_fmask) { 277 pwarn("INCORRECT QFMASK=%qx IN SUPERBLOCK", 278 (unsigned long long)sblock.fs_qfmask); 279 sblock.fs_qfmask = ~sblock.fs_fmask; 280 if (preen) 281 printf(" (FIXED)\n"); 282 if (preen || reply("FIX") == 1) { 283 sbdirty(); 284 dirty(&asblk); 285 } 286 } 287 newinofmt = 1; 288 } else { 289 sblock.fs_qbmask = ~sblock.fs_bmask; 290 sblock.fs_qfmask = ~sblock.fs_fmask; 291 newinofmt = 0; 292 } 293 /* 294 * Convert to new inode format. 295 */ 296 if (cvtlevel >= 2 && sblock.fs_inodefmt < FS_44INODEFMT) { 297 if (preen) 298 pwarn("CONVERTING TO NEW INODE FORMAT\n"); 299 else if (!reply("CONVERT TO NEW INODE FORMAT")) 300 return(0); 301 doinglevel2++; 302 sblock.fs_inodefmt = FS_44INODEFMT; 303 sblock.fs_maxfilesize = maxfilesize; 304 sblock.fs_maxsymlinklen = MAXSYMLINKLEN; 305 sblock.fs_qbmask = ~sblock.fs_bmask; 306 sblock.fs_qfmask = ~sblock.fs_fmask; 307 sbdirty(); 308 dirty(&asblk); 309 } 310 /* 311 * Convert to new cylinder group format. 312 */ 313 if (cvtlevel >= 1 && sblock.fs_postblformat == FS_42POSTBLFMT) { 314 if (preen) 315 pwarn("CONVERTING TO NEW CYLINDER GROUP FORMAT\n"); 316 else if (!reply("CONVERT TO NEW CYLINDER GROUP FORMAT")) 317 return(0); 318 doinglevel1++; 319 sblock.fs_postblformat = FS_DYNAMICPOSTBLFMT; 320 sblock.fs_nrpos = 8; 321 sblock.fs_postbloff = 322 (char *)(&sblock.fs_opostbl[0][0]) - 323 (char *)(&sblock.fs_firstfield); 324 sblock.fs_rotbloff = &sblock.fs_space[0] - 325 (u_char *)(&sblock.fs_firstfield); 326 sblock.fs_cgsize = 327 fragroundup(&sblock, CGSIZE(&sblock)); 328 sbdirty(); 329 dirty(&asblk); 330 } 331 if (asblk.b_dirty && !bflag) { 332 memmove(&altsblock, &sblock, (size_t)sblock.fs_sbsize); 333 flush(fswritefd, &asblk); 334 } 335 /* 336 * read in the summary info. 337 */ 338 asked = 0; 339 for (i = 0, j = 0; i < sblock.fs_cssize; i += sblock.fs_bsize, j++) { 340 size = sblock.fs_cssize - i < sblock.fs_bsize ? 341 sblock.fs_cssize - i : sblock.fs_bsize; 342 sblock.fs_csp[j] = (struct csum *)calloc(1, (unsigned)size); 343 if (bread(fsreadfd, (char *)sblock.fs_csp[j], 344 fsbtodb(&sblock, sblock.fs_csaddr + j * sblock.fs_frag), 345 size) != 0 && !asked) { 346 pfatal("BAD SUMMARY INFORMATION"); 347 if (reply("CONTINUE") == 0) 348 exit(EEXIT); 349 asked++; 350 } 351 } 352 /* 353 * allocate and initialize the necessary maps 354 */ 355 bmapsize = roundup(howmany(maxfsblock, NBBY), sizeof(int16_t)); 356 blockmap = calloc((unsigned)bmapsize, sizeof (char)); 357 if (blockmap == NULL) { 358 printf("cannot alloc %u bytes for blockmap\n", 359 (unsigned)bmapsize); 360 goto badsblabel; 361 } 362 statemap = calloc((unsigned)(maxino + 1), sizeof(char)); 363 if (statemap == NULL) { 364 printf("cannot alloc %u bytes for statemap\n", 365 (unsigned)(maxino + 1)); 366 goto badsblabel; 367 } 368 typemap = calloc((unsigned)(maxino + 1), sizeof(char)); 369 if (typemap == NULL) { 370 printf("cannot alloc %u bytes for typemap\n", 371 (unsigned)(maxino + 1)); 372 goto badsblabel; 373 } 374 lncntp = (int16_t *)calloc((unsigned)(maxino + 1), sizeof(int16_t)); 375 if (lncntp == NULL) { 376 printf("cannot alloc %u bytes for lncntp\n", 377 (unsigned)((maxino + 1) * sizeof(int16_t))); 378 goto badsblabel; 379 } 380 numdirs = sblock.fs_cstotal.cs_ndir; 381 inplast = 0; 382 listmax = numdirs + 10; 383 inpsort = (struct inoinfo **)calloc((unsigned)listmax, 384 sizeof(struct inoinfo *)); 385 inphead = (struct inoinfo **)calloc((unsigned)numdirs, 386 sizeof(struct inoinfo *)); 387 if (inpsort == NULL || inphead == NULL) { 388 printf("cannot alloc %u bytes for inphead\n", 389 (unsigned)(numdirs * sizeof(struct inoinfo *))); 390 goto badsblabel; 391 } 392 bufinit(); 393 return (1); 394 395 badsblabel: 396 ckfini(0); 397 return (0); 398 } 399 400 /* 401 * Read in the super block and its summary info. 402 */ 403 static int 404 readsb(listerr) 405 int listerr; 406 { 407 ufs_daddr_t super = bflag ? bflag : SBOFF / dev_bsize; 408 409 if (bread(fsreadfd, (char *)&sblock, super, (long)SBSIZE) != 0) 410 return (0); 411 sblk.b_bno = super; 412 sblk.b_size = SBSIZE; 413 /* 414 * run a few consistency checks of the super block 415 */ 416 if (sblock.fs_magic != FS_MAGIC) 417 { badsb(listerr, "MAGIC NUMBER WRONG"); return (0); } 418 if (sblock.fs_ncg < 1) 419 { badsb(listerr, "NCG OUT OF RANGE"); return (0); } 420 if (sblock.fs_cpg < 1) 421 { badsb(listerr, "CPG OUT OF RANGE"); return (0); } 422 if (sblock.fs_ncg * sblock.fs_cpg < sblock.fs_ncyl || 423 (sblock.fs_ncg - 1) * sblock.fs_cpg >= sblock.fs_ncyl) 424 { badsb(listerr, "NCYL LESS THAN NCG*CPG"); return (0); } 425 if (sblock.fs_sbsize > SBSIZE) 426 { badsb(listerr, "SIZE PREPOSTEROUSLY LARGE"); return (0); } 427 /* 428 * Compute block size that the filesystem is based on, 429 * according to fsbtodb, and adjust superblock block number 430 * so we can tell if this is an alternate later. 431 */ 432 super *= dev_bsize; 433 dev_bsize = sblock.fs_fsize / fsbtodb(&sblock, 1); 434 sblk.b_bno = super / dev_bsize; 435 if (bflag) { 436 havesb = 1; 437 return (1); 438 } 439 /* 440 * Set all possible fields that could differ, then do check 441 * of whole super block against an alternate super block. 442 * When an alternate super-block is specified this check is skipped. 443 */ 444 getblk(&asblk, cgsblock(&sblock, sblock.fs_ncg - 1), sblock.fs_sbsize); 445 if (asblk.b_errs) 446 return (0); 447 altsblock.fs_firstfield = sblock.fs_firstfield; 448 altsblock.fs_fscktime = sblock.fs_fscktime; 449 altsblock.fs_unused_1 = sblock.fs_unused_1; 450 altsblock.fs_time = sblock.fs_time; 451 altsblock.fs_cstotal = sblock.fs_cstotal; 452 altsblock.fs_cgrotor = sblock.fs_cgrotor; 453 altsblock.fs_fmod = sblock.fs_fmod; 454 altsblock.fs_clean = sblock.fs_clean; 455 altsblock.fs_ronly = sblock.fs_ronly; 456 altsblock.fs_flags = sblock.fs_flags; 457 altsblock.fs_maxcontig = sblock.fs_maxcontig; 458 altsblock.fs_minfree = sblock.fs_minfree; 459 altsblock.fs_optim = sblock.fs_optim; 460 altsblock.fs_rotdelay = sblock.fs_rotdelay; 461 altsblock.fs_maxbpg = sblock.fs_maxbpg; 462 memmove(altsblock.fs_csp, sblock.fs_csp, sizeof sblock.fs_csp); 463 altsblock.fs_maxcluster = sblock.fs_maxcluster; 464 memmove(altsblock.fs_fsmnt, sblock.fs_fsmnt, sizeof sblock.fs_fsmnt); 465 memmove(altsblock.fs_sparecon, 466 sblock.fs_sparecon, sizeof sblock.fs_sparecon); 467 /* 468 * The following should not have to be copied. 469 */ 470 altsblock.fs_fsbtodb = sblock.fs_fsbtodb; 471 altsblock.fs_interleave = sblock.fs_interleave; 472 altsblock.fs_npsect = sblock.fs_npsect; 473 altsblock.fs_nrpos = sblock.fs_nrpos; 474 altsblock.fs_state = sblock.fs_state; 475 altsblock.fs_qbmask = sblock.fs_qbmask; 476 altsblock.fs_qfmask = sblock.fs_qfmask; 477 altsblock.fs_state = sblock.fs_state; 478 altsblock.fs_maxfilesize = sblock.fs_maxfilesize; 479 if (memcmp(&sblock, &altsblock, (int)sblock.fs_sbsize)) { 480 if (debug) { 481 long *nlp, *olp, *endlp; 482 483 printf("superblock mismatches\n"); 484 nlp = (long *)&altsblock; 485 olp = (long *)&sblock; 486 endlp = olp + (sblock.fs_sbsize / sizeof *olp); 487 for ( ; olp < endlp; olp++, nlp++) { 488 if (*olp == *nlp) 489 continue; 490 printf("offset %ld, original %ld, alternate %ld\n", 491 (long)(olp - (long *)&sblock), *olp, *nlp); 492 } 493 } 494 badsb(listerr, 495 "VALUES IN SUPER BLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE"); 496 return (0); 497 } 498 havesb = 1; 499 return (1); 500 } 501 502 static void 503 badsb(listerr, s) 504 int listerr; 505 char *s; 506 { 507 508 if (!listerr) 509 return; 510 if (preen) 511 printf("%s: ", cdevname()); 512 pfatal("BAD SUPER BLOCK: %s\n", s); 513 } 514 515 /* 516 * Calculate a prototype superblock based on information in the disk label. 517 * When done the cgsblock macro can be calculated and the fs_ncg field 518 * can be used. Do NOT attempt to use other macros without verifying that 519 * their needed information is available! 520 */ 521 static int 522 calcsb(dev, devfd, fs) 523 char *dev; 524 int devfd; 525 struct fs *fs; 526 { 527 struct disklabel *lp; 528 struct partition *pp; 529 char *cp; 530 int i; 531 532 cp = strchr(dev, '\0') - 1; 533 if ((cp == (char *)-1 || (*cp < 'a' || *cp > 'h')) && !isdigit(*cp)) { 534 pfatal("%s: CANNOT FIGURE OUT FILE SYSTEM PARTITION\n", dev); 535 return (0); 536 } 537 lp = getdisklabel(dev, devfd); 538 if (isdigit(*cp)) 539 pp = &lp->d_partitions[0]; 540 else 541 pp = &lp->d_partitions[*cp - 'a']; 542 if (pp->p_fstype != FS_BSDFFS) { 543 pfatal("%s: NOT LABELED AS A BSD FILE SYSTEM (%s)\n", 544 dev, pp->p_fstype < FSMAXTYPES ? 545 fstypenames[pp->p_fstype] : "unknown"); 546 return (0); 547 } 548 memset(fs, 0, sizeof(struct fs)); 549 fs->fs_fsize = pp->p_fsize; 550 fs->fs_frag = pp->p_frag; 551 fs->fs_cpg = pp->p_cpg; 552 fs->fs_size = pp->p_size; 553 fs->fs_ntrak = lp->d_ntracks; 554 fs->fs_nsect = lp->d_nsectors; 555 fs->fs_spc = lp->d_secpercyl; 556 fs->fs_nspf = fs->fs_fsize / lp->d_secsize; 557 fs->fs_sblkno = roundup( 558 howmany(lp->d_bbsize + lp->d_sbsize, fs->fs_fsize), 559 fs->fs_frag); 560 fs->fs_cgmask = 0xffffffff; 561 for (i = fs->fs_ntrak; i > 1; i >>= 1) 562 fs->fs_cgmask <<= 1; 563 if (!POWEROF2(fs->fs_ntrak)) 564 fs->fs_cgmask <<= 1; 565 fs->fs_cgoffset = roundup( 566 howmany(fs->fs_nsect, NSPF(fs)), fs->fs_frag); 567 fs->fs_fpg = (fs->fs_cpg * fs->fs_spc) / NSPF(fs); 568 fs->fs_ncg = howmany(fs->fs_size / fs->fs_spc, fs->fs_cpg); 569 for (fs->fs_fsbtodb = 0, i = NSPF(fs); i > 1; i >>= 1) 570 fs->fs_fsbtodb++; 571 dev_bsize = lp->d_secsize; 572 return (1); 573 } 574 575 static struct disklabel * 576 getdisklabel(s, fd) 577 char *s; 578 int fd; 579 { 580 static struct disklabel lab; 581 582 if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { 583 if (s == NULL) 584 return ((struct disklabel *)NULL); 585 pwarn("ioctl (GCINFO): %s\n", strerror(errno)); 586 errx(EEXIT, "%s: can't read disk label", s); 587 } 588 return (&lab); 589 } 590
Indexes created Fri Sep 26 20:09:58 GMT 2025