newfs.c revision 1.38.8.3
1 /* $NetBSD: newfs.c,v 1.38.8.3 2001/11/25 19:32:54 he 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 1.38.8.3 2001/11/25 19:32:54 he 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 fsize = 0; /* fragment size */ 166 int bsize = 0; /* block size */ 167 int cpg = DESCPG; /* cylinders/cylinder group */ 168 int cpgflg; /* cylinders/cylinder group flag was given */ 169 int minfree = MINFREE; /* free space threshold */ 170 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 171 int density; /* number of bytes per inode */ 172 int maxcontig = 0; /* max contiguous blocks to allocate */ 173 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 174 int maxbpg; /* maximum blocks per file in a cyl group */ 175 int nrpos = NRPOS; /* # of distinguished rotational positions */ 176 int bbsize = BBSIZE; /* boot block size */ 177 int sbsize = SBSIZE; /* superblock size */ 178 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 179 u_long memleft; /* virtual memory available */ 180 caddr_t membase; /* start address of memory based filesystem */ 181 int needswap =0; /* Filesystem not in native byte order */ 182 #ifdef COMPAT 183 char *disktype; 184 int unlabeled; 185 #endif 186 187 char device[MAXPATHLEN]; 188 extern char *__progname; 189 190 int 191 main(int argc, char *argv[]) 192 { 193 struct partition *pp; 194 struct disklabel *lp; 195 struct disklabel mfsfakelabel; 196 struct partition oldpartition; 197 struct stat st; 198 struct statfs *mp; 199 int ch, fsi = 0, fso, len, maxpartitions, n; 200 char *cp = NULL, *endp, *opstring, *s1, *s2, *special; 201 #ifdef MFS 202 char mountfromname[100]; 203 pid_t pid, res; 204 struct statfs sf; 205 int status; 206 #endif 207 208 if (strstr(__progname, "mfs")) { 209 mfs = 1; 210 Nflag++; 211 } 212 213 maxpartitions = getmaxpartitions(); 214 if (maxpartitions > 26) 215 errx(1, "insane maxpartitions value %d", maxpartitions); 216 217 opstring = mfs ? 218 "NT:a:b:c:d:e:f:i:m:o:s:" : 219 "B:NOS:T:a:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:"; 220 while ((ch = getopt(argc, argv, opstring)) != -1) 221 switch (ch) { 222 case 'B': 223 if (strcmp(optarg, "be") == 0) { 224 #if BYTE_ORDER == LITTLE_ENDIAN 225 needswap = 1; 226 #endif 227 } else if (strcmp(optarg, "le") == 0) { 228 #if BYTE_ORDER == BIG_ENDIAN 229 needswap = 1; 230 #endif 231 } else 232 usage(); 233 break; 234 case 'N': 235 Nflag = 1; 236 break; 237 case 'O': 238 Oflag = 1; 239 break; 240 case 'S': 241 if ((sectorsize = atoi(optarg)) <= 0) 242 errx(1, "%s: bad sector size", optarg); 243 break; 244 #ifdef COMPAT 245 case 'T': 246 disktype = optarg; 247 break; 248 #endif 249 case 'a': 250 if ((maxcontig = atoi(optarg)) <= 0) 251 errx(1, "%s: bad maximum contiguous blocks", 252 optarg); 253 break; 254 case 'b': 255 if ((bsize = atoi(optarg)) < MINBSIZE) 256 errx(1, "%s: bad block size", optarg); 257 break; 258 case 'c': 259 if ((cpg = atoi(optarg)) <= 0) 260 errx(1, "%s: bad cylinders/group", optarg); 261 cpgflg++; 262 break; 263 case 'd': 264 if ((rotdelay = atoi(optarg)) < 0) 265 errx(1, "%s: bad rotational delay", optarg); 266 break; 267 case 'e': 268 if ((maxbpg = atoi(optarg)) <= 0) 269 errx(1, "%s: bad blocks per file in a cylinder group", 270 optarg); 271 break; 272 case 'f': 273 if ((fsize = atoi(optarg)) <= 0) 274 errx(1, "%s: bad fragment size", optarg); 275 break; 276 case 'i': 277 if ((density = atoi(optarg)) <= 0) 278 errx(1, "%s: bad bytes per inode", optarg); 279 break; 280 case 'k': 281 if ((trackskew = atoi(optarg)) < 0) 282 errx(1, "%s: bad track skew", optarg); 283 break; 284 case 'l': 285 if ((interleave = atoi(optarg)) <= 0) 286 errx(1, "%s: bad interleave", optarg); 287 break; 288 case 'm': 289 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 290 errx(1, "%s: bad free space %%", optarg); 291 break; 292 case 'n': 293 if ((nrpos = atoi(optarg)) <= 0) 294 errx(1, "%s: bad rotational layout count", 295 optarg); 296 break; 297 case 'o': 298 if (mfs) 299 getmntopts(optarg, mopts, &mntflags, 0); 300 else { 301 if (strcmp(optarg, "space") == 0) 302 opt = FS_OPTSPACE; 303 else if (strcmp(optarg, "time") == 0) 304 opt = FS_OPTTIME; 305 else 306 errx(1, "%s %s", 307 "unknown optimization preference: ", 308 "use `space' or `time'."); 309 } 310 break; 311 case 'p': 312 if ((trackspares = atoi(optarg)) < 0) 313 errx(1, "%s: bad spare sectors per track", 314 optarg); 315 break; 316 case 'r': 317 if ((rpm = atoi(optarg)) <= 0) 318 errx(1, "%s: bad revolutions/minute", optarg); 319 break; 320 case 's': 321 fssize = (int)strtol(optarg, &endp, 10); 322 if (*endp) { 323 if (mfs) { /* Only do 'm' for mfs */ 324 if (*endp == 'm' || *endp == 'M') 325 fssize *= 1024 * 1024 / 512; 326 else 327 fssize = -1; /* error */ 328 } 329 else 330 fssize = -1; /* error */ 331 } 332 if (fssize <= 0) 333 errx(1, "%s: bad file system size", optarg); 334 break; 335 case 't': 336 if ((ntracks = atoi(optarg)) <= 0) 337 errx(1, "%s: bad total tracks", optarg); 338 break; 339 case 'u': 340 if ((nsectors = atoi(optarg)) <= 0) 341 errx(1, "%s: bad sectors/track", optarg); 342 break; 343 case 'x': 344 if ((cylspares = atoi(optarg)) < 0) 345 errx(1, "%s: bad spare sectors per cylinder", 346 optarg); 347 break; 348 case '?': 349 default: 350 usage(); 351 } 352 argc -= optind; 353 argv += optind; 354 355 if (argc != 2 && (mfs || argc != 1)) 356 usage(); 357 358 special = argv[0]; 359 if (mfs && !strcmp(special, "swap")) { 360 /* 361 * it's an MFS, mounted on "swap." fake up a label. 362 * XXX XXX XXX 363 */ 364 fso = -1; /* XXX; normally done below. */ 365 366 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 367 mfsfakelabel.d_secsize = 512; 368 mfsfakelabel.d_nsectors = 64; 369 mfsfakelabel.d_ntracks = 16; 370 mfsfakelabel.d_ncylinders = 16; 371 mfsfakelabel.d_secpercyl = 1024; 372 mfsfakelabel.d_secperunit = 16384; 373 mfsfakelabel.d_rpm = 3600; 374 mfsfakelabel.d_interleave = 1; 375 mfsfakelabel.d_npartitions = 1; 376 mfsfakelabel.d_partitions[0].p_size = 16384; 377 mfsfakelabel.d_partitions[0].p_fsize = 1024; 378 mfsfakelabel.d_partitions[0].p_frag = 8; 379 mfsfakelabel.d_partitions[0].p_cpg = 16; 380 381 lp = &mfsfakelabel; 382 pp = &mfsfakelabel.d_partitions[0]; 383 384 goto havelabel; 385 } 386 cp = strrchr(special, '/'); 387 if (cp == 0) { 388 /* 389 * No path prefix; try /dev/r%s then /dev/%s. 390 */ 391 (void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV, 392 special); 393 if (stat(device, &st) == -1) 394 (void)snprintf(device, sizeof(device), "%s%s", 395 _PATH_DEV, special); 396 special = device; 397 } 398 if (Nflag) { 399 fso = -1; 400 } else { 401 fso = open(special, O_WRONLY); 402 if (fso < 0) 403 err(1, "%s: open", special); 404 405 /* Bail if target special is mounted */ 406 n = getmntinfo(&mp, MNT_NOWAIT); 407 if (n == 0) 408 err(1, "%s: getmntinfo", special); 409 410 len = sizeof(_PATH_DEV) - 1; 411 s1 = special; 412 if (strncmp(_PATH_DEV, s1, len) == 0) 413 s1 += len; 414 415 while (--n >= 0) { 416 s2 = mp->f_mntfromname; 417 if (strncmp(_PATH_DEV, s2, len) == 0) { 418 s2 += len - 1; 419 *s2 = 'r'; 420 } 421 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 422 errx(1, "%s is mounted on %s", 423 special, mp->f_mntonname); 424 ++mp; 425 } 426 } 427 if (mfs && disktype != NULL) { 428 lp = (struct disklabel *)getdiskbyname(disktype); 429 if (lp == NULL) 430 errx(1, "%s: unknown disk type", disktype); 431 pp = &lp->d_partitions[1]; 432 } else { 433 fsi = open(special, O_RDONLY); 434 if (fsi < 0) 435 err(1, "%s: open", special); 436 if (fstat(fsi, &st) < 0) 437 err(1, "%s: fstat", special); 438 if (!S_ISCHR(st.st_mode) && !mfs) 439 warnx("%s: not a character-special device", special); 440 cp = strchr(argv[0], '\0') - 1; 441 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 442 && !isdigit(*cp))) 443 errx(1, "can't figure out file system partition"); 444 #ifdef COMPAT 445 if (!mfs && disktype == NULL) 446 disktype = argv[1]; 447 #endif 448 lp = getdisklabel(special, fsi); 449 if (isdigit(*cp)) 450 pp = &lp->d_partitions[0]; 451 else 452 pp = &lp->d_partitions[*cp - 'a']; 453 if (pp->p_size == 0) 454 errx(1, "`%c' partition is unavailable", *cp); 455 if (pp->p_fstype == FS_BOOT) 456 errx(1, "`%c' partition overlaps boot program", *cp); 457 } 458 havelabel: 459 if (fssize == 0) 460 fssize = pp->p_size; 461 if (fssize > pp->p_size && !mfs) 462 errx(1, "maximum file system size on the `%c' partition is %d", 463 *cp, pp->p_size); 464 if (rpm == 0) { 465 rpm = lp->d_rpm; 466 if (rpm <= 0) 467 rpm = 3600; 468 } 469 if (ntracks == 0) { 470 ntracks = lp->d_ntracks; 471 if (ntracks <= 0) 472 errx(1, "no default #tracks"); 473 } 474 if (nsectors == 0) { 475 nsectors = lp->d_nsectors; 476 if (nsectors <= 0) 477 errx(1, "no default #sectors/track"); 478 } 479 if (sectorsize == 0) { 480 sectorsize = lp->d_secsize; 481 if (sectorsize <= 0) 482 errx(1, "no default sector size"); 483 } 484 if (trackskew == -1) { 485 trackskew = lp->d_trackskew; 486 if (trackskew < 0) 487 trackskew = 0; 488 } 489 if (interleave == 0) { 490 interleave = lp->d_interleave; 491 if (interleave <= 0) 492 interleave = 1; 493 } 494 if (fsize == 0) { 495 fsize = pp->p_fsize; 496 if (fsize <= 0) 497 fsize = MAX(DFL_FRAGSIZE, lp->d_secsize); 498 } 499 if (bsize == 0) { 500 bsize = pp->p_frag * pp->p_fsize; 501 if (bsize <= 0) 502 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 503 } 504 if (cpgflg == 0) { 505 if (pp->p_cpg != 0) 506 cpg = pp->p_cpg; 507 } 508 /* 509 * Maxcontig sets the default for the maximum number of blocks 510 * that may be allocated sequentially. With filesystem clustering 511 * it is possible to allocate contiguous blocks up to the maximum 512 * transfer size permitted by the controller or buffering. 513 */ 514 if (maxcontig == 0) 515 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 516 if (density == 0) 517 density = NFPI * fsize; 518 if (minfree < MINFREE && opt != FS_OPTSPACE) { 519 warnx("%s %s %d%%", "Warning: changing optimization to space", 520 "because minfree is less than", MINFREE); 521 opt = FS_OPTSPACE; 522 } 523 if (trackspares == -1) { 524 trackspares = lp->d_sparespertrack; 525 if (trackspares < 0) 526 trackspares = 0; 527 } 528 nphyssectors = nsectors + trackspares; 529 if (cylspares == -1) { 530 cylspares = lp->d_sparespercyl; 531 if (cylspares < 0) 532 cylspares = 0; 533 } 534 secpercyl = nsectors * ntracks - cylspares; 535 if (secpercyl != lp->d_secpercyl) 536 warnx("%s (%d) %s (%u)\n", 537 "Warning: calculated sectors per cylinder", secpercyl, 538 "disagrees with disk label", lp->d_secpercyl); 539 if (maxbpg == 0) 540 maxbpg = MAXBLKPG(bsize); 541 #ifdef notdef /* label may be 0 if faked up by kernel */ 542 bbsize = lp->d_bbsize; 543 sbsize = lp->d_sbsize; 544 #endif 545 oldpartition = *pp; 546 mkfs(pp, special, fsi, fso); 547 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition))) 548 rewritelabel(special, fso, lp); 549 if (!Nflag) 550 close(fso); 551 close(fsi); 552 #ifdef MFS 553 if (mfs) { 554 struct mfs_args args; 555 556 switch (pid = fork()) { 557 case -1: 558 perror("mfs"); 559 exit(10); 560 case 0: 561 (void)snprintf(mountfromname, sizeof(mountfromname), 562 "mfs:%d", getpid()); 563 break; 564 default: 565 (void)snprintf(mountfromname, sizeof(mountfromname), 566 "mfs:%d", pid); 567 for (;;) { 568 /* 569 * spin until the mount succeeds 570 * or the child exits 571 */ 572 usleep(1); 573 574 /* 575 * XXX Here is a race condition: another process 576 * can mount a filesystem which hides our 577 * ramdisk before we see the success. 578 */ 579 if (statfs(argv[1], &sf) < 0) 580 err(88, "statfs %s", argv[1]); 581 if (!strcmp(sf.f_mntfromname, mountfromname) && 582 !strncmp(sf.f_mntonname, argv[1], 583 MNAMELEN) && 584 !strcmp(sf.f_fstypename, "mfs")) 585 exit(0); 586 587 res = waitpid(pid, &status, WNOHANG); 588 if (res == -1) 589 err(11, "waitpid"); 590 if (res != pid) 591 continue; 592 if (WIFEXITED(status)) { 593 if (WEXITSTATUS(status) == 0) 594 exit(0); 595 errx(1, "%s: mount: %s", argv[1], 596 strerror(WEXITSTATUS(status))); 597 } else 598 errx(11, "abnormal termination"); 599 } 600 /* NOTREACHED */ 601 } 602 603 (void) setsid(); 604 (void) close(0); 605 (void) close(1); 606 (void) close(2); 607 (void) chdir("/"); 608 609 args.fspec = mountfromname; 610 args.export.ex_root = -2; 611 if (mntflags & MNT_RDONLY) 612 args.export.ex_flags = MNT_EXRDONLY; 613 else 614 args.export.ex_flags = 0; 615 args.base = membase; 616 args.size = fssize * sectorsize; 617 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) 618 exit(errno); /* parent prints message */ 619 } 620 #endif 621 exit(0); 622 } 623 624 #ifdef COMPAT 625 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 626 #else 627 const char lmsg[] = "%s: can't read disk label"; 628 #endif 629 630 static struct disklabel * 631 getdisklabel(char *s, volatile int fd) 632 /* XXX why is fs volatile?! */ 633 { 634 static struct disklabel lab; 635 636 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 637 #ifdef COMPAT 638 if (disktype) { 639 struct disklabel *lp; 640 641 unlabeled++; 642 lp = getdiskbyname(disktype); 643 if (lp == NULL) 644 errx(1, "%s: unknown disk type", disktype); 645 return (lp); 646 } 647 #endif 648 warn("ioctl (GDINFO)"); 649 errx(1, lmsg, s); 650 } 651 return (&lab); 652 } 653 654 static void 655 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 656 /* XXX why is fd volatile?! */ 657 { 658 #ifdef COMPAT 659 if (unlabeled) 660 return; 661 #endif 662 lp->d_checksum = 0; 663 lp->d_checksum = dkcksum(lp); 664 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 665 warn("ioctl (WDINFO)"); 666 errx(1, "%s: can't rewrite disk label", s); 667 } 668 #if __vax__ 669 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 670 int i; 671 int cfd; 672 daddr_t alt; 673 char specname[64]; 674 char blk[1024]; 675 char *cp; 676 677 /* 678 * Make name for 'c' partition. 679 */ 680 strcpy(specname, s); 681 cp = specname + strlen(specname) - 1; 682 if (!isdigit(*cp)) 683 *cp = 'c'; 684 cfd = open(specname, O_WRONLY); 685 if (cfd < 0) 686 err(1, "%s: open", specname); 687 memset(blk, 0, sizeof(blk)); 688 *(struct disklabel *)(blk + LABELOFFSET) = *lp; 689 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 690 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 691 off_t offset; 692 693 offset = alt + i; 694 offset *= lp->d_secsize; 695 if (lseek(cfd, offset, SEEK_SET) == -1) 696 err(1, "lseek to badsector area: "); 697 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 698 warn("alternate label %d write", i/2); 699 } 700 close(cfd); 701 } 702 #endif 703 } 704 705 static void 706 usage(void) 707 { 708 if (mfs) { 709 fprintf(stderr, 710 "usage: %s [ -fsoptions ] special-device mount-point\n", 711 __progname); 712 } else 713 fprintf(stderr, 714 "usage: %s [ -fsoptions ] special-device%s\n", 715 __progname, 716 #ifdef COMPAT 717 " [device-type]"); 718 #else 719 ""); 720 #endif 721 fprintf(stderr, "where fsoptions are:\n"); 722 fprintf(stderr, "\t-B byte order (`be' or `le')\n"); 723 fprintf(stderr, 724 "\t-N do not create file system, just print out parameters\n"); 725 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 726 fprintf(stderr, "\t-S sector size\n"); 727 #ifdef COMPAT 728 fprintf(stderr, "\t-T disktype\n"); 729 #endif 730 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 731 fprintf(stderr, "\t-b block size\n"); 732 fprintf(stderr, "\t-c cylinders/group\n"); 733 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 734 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 735 fprintf(stderr, "\t-f frag size\n"); 736 fprintf(stderr, "\t-i number of bytes per inode\n"); 737 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 738 fprintf(stderr, "\t-l hardware sector interleave\n"); 739 fprintf(stderr, "\t-m minimum free space %%\n"); 740 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 741 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 742 fprintf(stderr, "\t-p spare sectors per track\n"); 743 fprintf(stderr, "\t-s file system size (sectors)\n"); 744 fprintf(stderr, "\t-r revolutions/minute\n"); 745 fprintf(stderr, "\t-t tracks/cylinder\n"); 746 fprintf(stderr, "\t-u sectors/track\n"); 747 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 748 exit(1); 749 } 750
Indexes created Mon Oct 20 20:10:13 GMT 2025