newfs.c revision 1.42
1 /* $NetBSD: newfs.c,v 1.42 2001/02/19 22:56:21 cgd Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1989, 1993, 1994 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 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)newfs.c 8.13 (Berkeley) 5/1/95"; 45 #else 46 __RCSID("$NetBSD: newfs.c,v 1.42 2001/02/19 22:56:21 cgd Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 /* 51 * newfs: friendly front end to mkfs 52 */ 53 #include <sys/param.h> 54 #include <sys/stat.h> 55 #include <sys/ioctl.h> 56 #include <sys/disklabel.h> 57 #include <sys/file.h> 58 #include <sys/mount.h> 59 #include <sys/sysctl.h> 60 #include <sys/wait.h> 61 62 #include <ufs/ufs/dir.h> 63 #include <ufs/ufs/dinode.h> 64 #include <ufs/ufs/ufsmount.h> 65 #include <ufs/ffs/fs.h> 66 67 #include <ctype.h> 68 #include <disktab.h> 69 #include <errno.h> 70 #include <paths.h> 71 #include <stdio.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <syslog.h> 75 #include <unistd.h> 76 #include <signal.h> 77 #include <err.h> 78 #include <util.h> 79 80 #include "mntopts.h" 81 #include "dkcksum.h" 82 #include "extern.h" 83 84 struct mntopt mopts[] = { 85 MOPT_STDOPTS, 86 MOPT_ASYNC, 87 MOPT_UPDATE, 88 MOPT_NOATIME, 89 { NULL }, 90 }; 91 92 static struct disklabel *getdisklabel(char *, int); 93 static void rewritelabel(char *, int, struct disklabel *); 94 static void usage(void); 95 int main(int, char *[]); 96 97 #define COMPAT /* allow non-labeled disks */ 98 99 /* 100 * The following two constants set the default block and fragment sizes. 101 * Both constants must be a power of 2 and meet the following constraints: 102 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 103 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 104 * DESBLKSIZE / DESFRAGSIZE <= 8 105 */ 106 #define DFL_FRAGSIZE 1024 107 #define DFL_BLKSIZE 8192 108 109 /* 110 * Cylinder groups may have up to many cylinders. The actual 111 * number used depends upon how much information can be stored 112 * on a single cylinder. The default is to use 16 cylinders 113 * per group. 114 */ 115 #define DESCPG 16 /* desired fs_cpg */ 116 117 /* 118 * ROTDELAY gives the minimum number of milliseconds to initiate 119 * another disk transfer on the same cylinder. It is used in 120 * determining the rotationally optimal layout for disk blocks 121 * within a file; the default of fs_rotdelay is 0ms. 122 */ 123 #define ROTDELAY 0 124 125 /* 126 * MAXBLKPG determines the maximum number of data blocks which are 127 * placed in a single cylinder group. The default is one indirect 128 * block worth of data blocks. 129 */ 130 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 131 132 /* 133 * Each file system has a number of inodes statically allocated. 134 * We allocate one inode slot per NFPI fragments, expecting this 135 * to be far more than we will ever need. 136 */ 137 #define NFPI 4 138 139 /* 140 * For each cylinder we keep track of the availability of blocks at different 141 * rotational positions, so that we can lay out the data to be picked 142 * up with minimum rotational latency. NRPOS is the default number of 143 * rotational positions that we distinguish. With NRPOS of 8 the resolution 144 * of our summary information is 2ms for a typical 3600 rpm drive. Caching 145 * and zoning pretty much defeats rotational optimization, so we now use a 146 * default of 1. 147 */ 148 #define NRPOS 1 /* number distinct rotational positions */ 149 150 151 int mfs; /* run as the memory based filesystem */ 152 int Nflag; /* run without writing file system */ 153 int Oflag; /* format as an 4.3BSD file system */ 154 int fssize; /* file system size */ 155 int ntracks; /* # tracks/cylinder */ 156 int nsectors; /* # sectors/track */ 157 int nphyssectors; /* # sectors/track including spares */ 158 int secpercyl; /* sectors per cylinder */ 159 int trackspares = -1; /* spare sectors per track */ 160 int cylspares = -1; /* spare sectors per cylinder */ 161 int sectorsize; /* bytes/sector */ 162 int rpm; /* revolutions/minute of drive */ 163 int interleave; /* hardware sector interleave */ 164 int trackskew = -1; /* sector 0 skew, per track */ 165 int headswitch; /* head switch time, usec */ 166 int trackseek; /* track-to-track seek, usec */ 167 int fsize = 0; /* fragment size */ 168 int bsize = 0; /* block size */ 169 int cpg = DESCPG; /* cylinders/cylinder group */ 170 int cpgflg; /* cylinders/cylinder group flag was given */ 171 int minfree = MINFREE; /* free space threshold */ 172 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 173 int density; /* number of bytes per inode */ 174 int maxcontig = 0; /* max contiguous blocks to allocate */ 175 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 176 int maxbpg; /* maximum blocks per file in a cyl group */ 177 int nrpos = NRPOS; /* # of distinguished rotational positions */ 178 int bbsize = BBSIZE; /* boot block size */ 179 int sbsize = SBSIZE; /* superblock size */ 180 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 181 u_long memleft; /* virtual memory available */ 182 caddr_t membase; /* start address of memory based filesystem */ 183 int needswap =0; /* Filesystem not in native byte order */ 184 #ifdef COMPAT 185 char *disktype; 186 int unlabeled; 187 #endif 188 189 char device[MAXPATHLEN]; 190 191 int 192 main(int argc, char *argv[]) 193 { 194 struct partition *pp; 195 struct disklabel *lp; 196 struct disklabel mfsfakelabel; 197 struct partition oldpartition; 198 struct stat st; 199 struct statfs *mp; 200 int ch, fsi = 0, fso, len, maxpartitions, n; 201 char *cp = NULL, *endp, *opstring, *s1, *s2, *special; 202 #ifdef MFS 203 char mountfromname[100]; 204 pid_t pid, res; 205 struct statfs sf; 206 int status; 207 #endif 208 209 if (strstr(getprogname(), "mfs")) { 210 mfs = 1; 211 Nflag++; 212 } 213 214 maxpartitions = getmaxpartitions(); 215 if (maxpartitions > 26) 216 errx(1, "insane maxpartitions value %d", maxpartitions); 217 218 opstring = mfs ? 219 "NT:a:b:c:d:e:f:i:m:o:s:" : 220 "B:NOS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:"; 221 while ((ch = getopt(argc, argv, opstring)) != -1) 222 switch (ch) { 223 case 'B': 224 if (strcmp(optarg, "be") == 0) { 225 #if BYTE_ORDER == LITTLE_ENDIAN 226 needswap = 1; 227 #endif 228 } else if (strcmp(optarg, "le") == 0) { 229 #if BYTE_ORDER == BIG_ENDIAN 230 needswap = 1; 231 #endif 232 } else 233 usage(); 234 break; 235 case 'N': 236 Nflag = 1; 237 break; 238 case 'O': 239 Oflag = 1; 240 break; 241 case 'S': 242 if ((sectorsize = atoi(optarg)) <= 0) 243 errx(1, "%s: bad sector size", optarg); 244 break; 245 #ifdef COMPAT 246 case 'T': 247 disktype = optarg; 248 break; 249 #endif 250 case 'a': 251 if ((maxcontig = atoi(optarg)) <= 0) 252 errx(1, "%s: bad maximum contiguous blocks", 253 optarg); 254 break; 255 case 'b': 256 if ((bsize = atoi(optarg)) < MINBSIZE) 257 errx(1, "%s: bad block size", optarg); 258 break; 259 case 'c': 260 if ((cpg = atoi(optarg)) <= 0) 261 errx(1, "%s: bad cylinders/group", optarg); 262 cpgflg++; 263 break; 264 case 'd': 265 if ((rotdelay = atoi(optarg)) < 0) 266 errx(1, "%s: bad rotational delay", optarg); 267 break; 268 case 'e': 269 if ((maxbpg = atoi(optarg)) <= 0) 270 errx(1, "%s: bad blocks per file in a cylinder group", 271 optarg); 272 break; 273 case 'f': 274 if ((fsize = atoi(optarg)) <= 0) 275 errx(1, "%s: bad fragment size", optarg); 276 break; 277 case 'i': 278 if ((density = atoi(optarg)) <= 0) 279 errx(1, "%s: bad bytes per inode", optarg); 280 break; 281 case 'k': 282 if ((trackskew = atoi(optarg)) < 0) 283 errx(1, "%s: bad track skew", optarg); 284 break; 285 case 'l': 286 if ((interleave = atoi(optarg)) <= 0) 287 errx(1, "%s: bad interleave", optarg); 288 break; 289 case 'm': 290 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 291 errx(1, "%s: bad free space %%", optarg); 292 break; 293 case 'n': 294 if ((nrpos = atoi(optarg)) <= 0) 295 errx(1, "%s: bad rotational layout count", 296 optarg); 297 break; 298 case 'o': 299 if (mfs) 300 getmntopts(optarg, mopts, &mntflags, 0); 301 else { 302 if (strcmp(optarg, "space") == 0) 303 opt = FS_OPTSPACE; 304 else if (strcmp(optarg, "time") == 0) 305 opt = FS_OPTTIME; 306 else 307 errx(1, "%s %s", 308 "unknown optimization preference: ", 309 "use `space' or `time'."); 310 } 311 break; 312 case 'p': 313 if ((trackspares = atoi(optarg)) < 0) 314 errx(1, "%s: bad spare sectors per track", 315 optarg); 316 break; 317 case 'r': 318 if ((rpm = atoi(optarg)) <= 0) 319 errx(1, "%s: bad revolutions/minute", optarg); 320 break; 321 case 's': 322 fssize = (int)strtol(optarg, &endp, 10); 323 if (*endp) { 324 if (mfs) { /* Only do 'm' for mfs */ 325 if (*endp == 'm' || *endp == 'M') 326 fssize *= 1024 * 1024 / 512; 327 else 328 fssize = -1; /* error */ 329 } 330 else 331 fssize = -1; /* error */ 332 } 333 if (fssize <= 0) 334 errx(1, "%s: bad file system size", optarg); 335 break; 336 case 't': 337 if ((ntracks = atoi(optarg)) <= 0) 338 errx(1, "%s: bad total tracks", optarg); 339 break; 340 case 'u': 341 if ((nsectors = atoi(optarg)) <= 0) 342 errx(1, "%s: bad sectors/track", optarg); 343 break; 344 case 'x': 345 if ((cylspares = atoi(optarg)) < 0) 346 errx(1, "%s: bad spare sectors per cylinder", 347 optarg); 348 break; 349 case '?': 350 default: 351 usage(); 352 } 353 argc -= optind; 354 argv += optind; 355 356 if (argc != 2 && (mfs || argc != 1)) 357 usage(); 358 359 special = argv[0]; 360 if (mfs && !strcmp(special, "swap")) { 361 /* 362 * it's an MFS, mounted on "swap." fake up a label. 363 * XXX XXX XXX 364 */ 365 fso = -1; /* XXX; normally done below. */ 366 367 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 368 mfsfakelabel.d_secsize = 512; 369 mfsfakelabel.d_nsectors = 64; 370 mfsfakelabel.d_ntracks = 16; 371 mfsfakelabel.d_ncylinders = 16; 372 mfsfakelabel.d_secpercyl = 1024; 373 mfsfakelabel.d_secperunit = 16384; 374 mfsfakelabel.d_rpm = 3600; 375 mfsfakelabel.d_interleave = 1; 376 mfsfakelabel.d_npartitions = 1; 377 mfsfakelabel.d_partitions[0].p_size = 16384; 378 mfsfakelabel.d_partitions[0].p_fsize = 1024; 379 mfsfakelabel.d_partitions[0].p_frag = 8; 380 mfsfakelabel.d_partitions[0].p_cpg = 16; 381 382 lp = &mfsfakelabel; 383 pp = &mfsfakelabel.d_partitions[0]; 384 385 goto havelabel; 386 } 387 cp = strrchr(special, '/'); 388 if (cp == 0) { 389 /* 390 * No path prefix; try /dev/r%s then /dev/%s. 391 */ 392 (void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV, 393 special); 394 if (stat(device, &st) == -1) 395 (void)snprintf(device, sizeof(device), "%s%s", 396 _PATH_DEV, special); 397 special = device; 398 } 399 if (Nflag) { 400 fso = -1; 401 } else { 402 fso = open(special, O_WRONLY); 403 if (fso < 0) 404 err(1, "%s: open", special); 405 406 /* Bail if target special is mounted */ 407 n = getmntinfo(&mp, MNT_NOWAIT); 408 if (n == 0) 409 err(1, "%s: getmntinfo", special); 410 411 len = sizeof(_PATH_DEV) - 1; 412 s1 = special; 413 if (strncmp(_PATH_DEV, s1, len) == 0) 414 s1 += len; 415 416 while (--n >= 0) { 417 s2 = mp->f_mntfromname; 418 if (strncmp(_PATH_DEV, s2, len) == 0) { 419 s2 += len - 1; 420 *s2 = 'r'; 421 } 422 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 423 errx(1, "%s is mounted on %s", 424 special, mp->f_mntonname); 425 ++mp; 426 } 427 } 428 if (mfs && disktype != NULL) { 429 lp = (struct disklabel *)getdiskbyname(disktype); 430 if (lp == NULL) 431 errx(1, "%s: unknown disk type", disktype); 432 pp = &lp->d_partitions[1]; 433 } else { 434 fsi = open(special, O_RDONLY); 435 if (fsi < 0) 436 err(1, "%s: open", special); 437 if (fstat(fsi, &st) < 0) 438 err(1, "%s: fstat", special); 439 if (!S_ISCHR(st.st_mode) && !mfs) 440 warnx("%s: not a character-special device", special); 441 cp = strchr(argv[0], '\0') - 1; 442 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 443 && !isdigit(*cp))) 444 errx(1, "can't figure out file system partition"); 445 #ifdef COMPAT 446 if (!mfs && disktype == NULL) 447 disktype = argv[1]; 448 #endif 449 lp = getdisklabel(special, fsi); 450 if (isdigit(*cp)) 451 pp = &lp->d_partitions[0]; 452 else 453 pp = &lp->d_partitions[*cp - 'a']; 454 if (pp->p_size == 0) 455 errx(1, "`%c' partition is unavailable", *cp); 456 if (pp->p_fstype == FS_BOOT) 457 errx(1, "`%c' partition overlaps boot program", *cp); 458 } 459 havelabel: 460 if (fssize == 0) 461 fssize = pp->p_size; 462 if (fssize > pp->p_size && !mfs) 463 errx(1, "maximum file system size on the `%c' partition is %d", 464 *cp, pp->p_size); 465 if (rpm == 0) { 466 rpm = lp->d_rpm; 467 if (rpm <= 0) 468 rpm = 3600; 469 } 470 if (ntracks == 0) { 471 ntracks = lp->d_ntracks; 472 if (ntracks <= 0) 473 errx(1, "no default #tracks"); 474 } 475 if (nsectors == 0) { 476 nsectors = lp->d_nsectors; 477 if (nsectors <= 0) 478 errx(1, "no default #sectors/track"); 479 } 480 if (sectorsize == 0) { 481 sectorsize = lp->d_secsize; 482 if (sectorsize <= 0) 483 errx(1, "no default sector size"); 484 } 485 if (trackskew == -1) { 486 trackskew = lp->d_trackskew; 487 if (trackskew < 0) 488 trackskew = 0; 489 } 490 if (interleave == 0) { 491 interleave = lp->d_interleave; 492 if (interleave <= 0) 493 interleave = 1; 494 } 495 if (fsize == 0) { 496 fsize = pp->p_fsize; 497 if (fsize <= 0) 498 fsize = MAX(DFL_FRAGSIZE, lp->d_secsize); 499 } 500 if (bsize == 0) { 501 bsize = pp->p_frag * pp->p_fsize; 502 if (bsize <= 0) 503 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 504 } 505 if (cpgflg == 0) { 506 if (pp->p_cpg != 0) 507 cpg = pp->p_cpg; 508 } 509 /* 510 * Maxcontig sets the default for the maximum number of blocks 511 * that may be allocated sequentially. With filesystem clustering 512 * it is possible to allocate contiguous blocks up to the maximum 513 * transfer size permitted by the controller or buffering. 514 */ 515 if (maxcontig == 0) 516 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 517 if (density == 0) 518 density = NFPI * fsize; 519 if (minfree < MINFREE && opt != FS_OPTSPACE) { 520 warnx("%s %s %d%%", "Warning: changing optimization to space", 521 "because minfree is less than", MINFREE); 522 opt = FS_OPTSPACE; 523 } 524 if (trackspares == -1) { 525 trackspares = lp->d_sparespertrack; 526 if (trackspares < 0) 527 trackspares = 0; 528 } 529 nphyssectors = nsectors + trackspares; 530 if (cylspares == -1) { 531 cylspares = lp->d_sparespercyl; 532 if (cylspares < 0) 533 cylspares = 0; 534 } 535 secpercyl = nsectors * ntracks - cylspares; 536 if (secpercyl != lp->d_secpercyl) 537 warnx("%s (%d) %s (%u)\n", 538 "Warning: calculated sectors per cylinder", secpercyl, 539 "disagrees with disk label", lp->d_secpercyl); 540 if (maxbpg == 0) 541 maxbpg = MAXBLKPG(bsize); 542 headswitch = lp->d_headswitch; 543 trackseek = lp->d_trkseek; 544 #ifdef notdef /* label may be 0 if faked up by kernel */ 545 bbsize = lp->d_bbsize; 546 sbsize = lp->d_sbsize; 547 #endif 548 oldpartition = *pp; 549 mkfs(pp, special, fsi, fso); 550 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition))) 551 rewritelabel(special, fso, lp); 552 if (!Nflag) 553 close(fso); 554 close(fsi); 555 #ifdef MFS 556 if (mfs) { 557 struct mfs_args args; 558 559 switch (pid = fork()) { 560 case -1: 561 perror("mfs"); 562 exit(10); 563 case 0: 564 (void)snprintf(mountfromname, sizeof(mountfromname), 565 "mfs:%d", getpid()); 566 break; 567 default: 568 (void)snprintf(mountfromname, sizeof(mountfromname), 569 "mfs:%d", pid); 570 for (;;) { 571 /* 572 * spin until the mount succeeds 573 * or the child exits 574 */ 575 usleep(1); 576 577 /* 578 * XXX Here is a race condition: another process 579 * can mount a filesystem which hides our 580 * ramdisk before we see the success. 581 */ 582 if (statfs(argv[1], &sf) < 0) 583 err(88, "statfs %s", argv[1]); 584 if (!strcmp(sf.f_mntfromname, mountfromname) && 585 !strncmp(sf.f_mntonname, argv[1], 586 MNAMELEN) && 587 !strcmp(sf.f_fstypename, "mfs")) 588 exit(0); 589 590 res = waitpid(pid, &status, WNOHANG); 591 if (res == -1) 592 err(11, "waitpid"); 593 if (res != pid) 594 continue; 595 if (WIFEXITED(status)) { 596 if (WEXITSTATUS(status) == 0) 597 exit(0); 598 errx(1, "%s: mount: %s", argv[1], 599 strerror(WEXITSTATUS(status))); 600 } else 601 errx(11, "abnormal termination"); 602 } 603 /* NOTREACHED */ 604 } 605 606 (void) setsid(); 607 (void) close(0); 608 (void) close(1); 609 (void) close(2); 610 (void) chdir("/"); 611 612 args.fspec = mountfromname; 613 args.export.ex_root = -2; 614 if (mntflags & MNT_RDONLY) 615 args.export.ex_flags = MNT_EXRDONLY; 616 else 617 args.export.ex_flags = 0; 618 args.base = membase; 619 args.size = fssize * sectorsize; 620 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) 621 exit(errno); /* parent prints message */ 622 } 623 #endif 624 exit(0); 625 } 626 627 #ifdef COMPAT 628 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 629 #else 630 const char lmsg[] = "%s: can't read disk label"; 631 #endif 632 633 static struct disklabel * 634 getdisklabel(char *s, volatile int fd) 635 /* XXX why is fs volatile?! */ 636 { 637 static struct disklabel lab; 638 639 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 640 #ifdef COMPAT 641 if (disktype) { 642 struct disklabel *lp; 643 644 unlabeled++; 645 lp = getdiskbyname(disktype); 646 if (lp == NULL) 647 errx(1, "%s: unknown disk type", disktype); 648 return (lp); 649 } 650 #endif 651 warn("ioctl (GDINFO)"); 652 errx(1, lmsg, s); 653 } 654 return (&lab); 655 } 656 657 static void 658 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 659 /* XXX why is fd volatile?! */ 660 { 661 #ifdef COMPAT 662 if (unlabeled) 663 return; 664 #endif 665 lp->d_checksum = 0; 666 lp->d_checksum = dkcksum(lp); 667 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 668 warn("ioctl (WDINFO)"); 669 errx(1, "%s: can't rewrite disk label", s); 670 } 671 #if __vax__ 672 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 673 int i; 674 int cfd; 675 daddr_t alt; 676 char specname[64]; 677 char blk[1024]; 678 char *cp; 679 680 /* 681 * Make name for 'c' partition. 682 */ 683 strcpy(specname, s); 684 cp = specname + strlen(specname) - 1; 685 if (!isdigit(*cp)) 686 *cp = 'c'; 687 cfd = open(specname, O_WRONLY); 688 if (cfd < 0) 689 err(1, "%s: open", specname); 690 memset(blk, 0, sizeof(blk)); 691 *(struct disklabel *)(blk + LABELOFFSET) = *lp; 692 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 693 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 694 off_t offset; 695 696 offset = alt + i; 697 offset *= lp->d_secsize; 698 if (lseek(cfd, offset, SEEK_SET) == -1) 699 err(1, "lseek to badsector area: "); 700 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 701 warn("alternate label %d write", i/2); 702 } 703 close(cfd); 704 } 705 #endif 706 } 707 708 static void 709 usage(void) 710 { 711 if (mfs) { 712 fprintf(stderr, 713 "usage: %s [ -fsoptions ] special-device mount-point\n", 714 getprogname()); 715 } else 716 fprintf(stderr, 717 "usage: %s [ -fsoptions ] special-device%s\n", 718 getprogname(), 719 #ifdef COMPAT 720 " [device-type]"); 721 #else 722 ""); 723 #endif 724 fprintf(stderr, "where fsoptions are:\n"); 725 fprintf(stderr, "\t-B byte order (`be' or `le')\n"); 726 fprintf(stderr, 727 "\t-N do not create file system, just print out parameters\n"); 728 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 729 fprintf(stderr, "\t-S sector size\n"); 730 #ifdef COMPAT 731 fprintf(stderr, "\t-T disktype\n"); 732 #endif 733 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 734 fprintf(stderr, "\t-b block size\n"); 735 fprintf(stderr, "\t-c cylinders/group\n"); 736 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 737 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 738 fprintf(stderr, "\t-f frag size\n"); 739 fprintf(stderr, "\t-i number of bytes per inode\n"); 740 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 741 fprintf(stderr, "\t-l hardware sector interleave\n"); 742 fprintf(stderr, "\t-m minimum free space %%\n"); 743 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 744 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 745 fprintf(stderr, "\t-p spare sectors per track\n"); 746 fprintf(stderr, "\t-s file system size (sectors)\n"); 747 fprintf(stderr, "\t-r revolutions/minute\n"); 748 fprintf(stderr, "\t-t tracks/cylinder\n"); 749 fprintf(stderr, "\t-u sectors/track\n"); 750 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 751 exit(1); 752 } 753
Indexes created Wed Oct 22 00:09:40 GMT 2025