1 /* 2 * Copyright (c) 1983, 1989, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#) Copyright (c) 1983, 1989, 1993, 1994 The Regents of the University of California. All rights reserved. 34 * @(#)newfs.c 8.13 (Berkeley) 5/1/95 35 * $FreeBSD: src/sbin/newfs/newfs.c,v 1.30.2.9 2003/05/13 12:03:55 joerg Exp $ 36 * $DragonFly: src/sbin/newfs/newfs.c,v 1.12 2005/01/06 03:21:00 cpressey Exp $ 37 */ 38 39 /* 40 * newfs: friendly front end to mkfs 41 */ 42 #include <sys/param.h> 43 #include <sys/stat.h> 44 #include <sys/disklabel.h> 45 #include <sys/file.h> 46 #include <sys/mount.h> 47 48 #include <vfs/ufs/dir.h> 49 #include <vfs/ufs/dinode.h> 50 #include <vfs/ufs/fs.h> 51 #include <vfs/ufs/ufsmount.h> 52 53 #include <ctype.h> 54 #include <err.h> 55 #include <errno.h> 56 #include <paths.h> 57 #include <stdio.h> 58 #include <stdlib.h> 59 #include <string.h> 60 #include <syslog.h> 61 #include <unistd.h> 62 63 #ifdef MFS 64 #include <sys/types.h> 65 #include <sys/mman.h> 66 #endif 67 68 #if __STDC__ 69 #include <stdarg.h> 70 #else 71 #include <varargs.h> 72 #endif 73 74 #include "mntopts.h" 75 #include "defs.h" 76 77 struct mntopt mopts[] = { 78 MOPT_STDOPTS, 79 MOPT_ASYNC, 80 MOPT_NULL, 81 }; 82 83 void fatal(const char *fmt, ...); 84 85 #define COMPAT /* allow non-labeled disks */ 86 87 /* 88 * The following two constants set the default block and fragment sizes. 89 * Both constants must be a power of 2 and meet the following constraints: 90 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 91 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 92 * DESBLKSIZE / DESFRAGSIZE <= 8 93 */ 94 #define DFL_FRAGSIZE 2048 95 #define DFL_BLKSIZE 16384 96 97 /* 98 * Cylinder groups may have up to many cylinders. The actual 99 * number used depends upon how much information can be stored 100 * on a single cylinder. The default is to use as many as possible 101 * cylinders per group. 102 */ 103 #define DESCPG 65536 /* desired fs_cpg ("infinity") */ 104 105 /* 106 * Once upon a time... 107 * ROTDELAY gives the minimum number of milliseconds to initiate 108 * another disk transfer on the same cylinder. It is used in 109 * determining the rotationally optimal layout for disk blocks 110 * within a file; the default of fs_rotdelay is 4ms. 111 * 112 * ...but now we make this 0 to disable the rotdelay delay because 113 * modern drives with read/write-behind achieve higher performance 114 * without the delay. 115 */ 116 #define ROTDELAY 0 117 118 /* 119 * MAXBLKPG determines the maximum number of data blocks which are 120 * placed in a single cylinder group. The default is one indirect 121 * block worth of data blocks. 122 */ 123 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 124 125 /* 126 * Each file system has a number of inodes statically allocated. 127 * We allocate one inode slot per NFPI fragments, expecting this 128 * to be far more than we will ever need. 129 */ 130 #define NFPI 4 131 132 /* 133 * Once upon a time... 134 * For each cylinder we keep track of the availability of blocks at different 135 * rotational positions, so that we can lay out the data to be picked 136 * up with minimum rotational latency. NRPOS is the default number of 137 * rotational positions that we distinguish. With NRPOS of 8 the resolution 138 * of our summary information is 2ms for a typical 3600 rpm drive. 139 * 140 * ...but now we make this 1 (which essentially disables the rotational 141 * position table because modern drives with read-ahead and write-behind do 142 * better without the rotational position table. 143 */ 144 #define NRPOS 1 /* number distinct rotational positions */ 145 146 /* 147 * About the same time as the above, we knew what went where on the disks. 148 * no longer so, so kill the code which finds the different platters too... 149 * We do this by saying one head, with a lot of sectors on it. 150 * The number of sectors are used to determine the size of a cyl-group. 151 * Kirk suggested one or two meg per "cylinder" so we say two. 152 */ 153 #define NTRACKS 1 /* number of heads */ 154 #define NSECTORS 4096 /* number of sectors */ 155 156 int mfs; /* run as the memory based filesystem */ 157 char *mfs_mtpt; /* mount point for mfs */ 158 struct stat mfs_mtstat; /* stat prior to mount */ 159 int Nflag; /* run without writing file system */ 160 int Oflag; /* format as an 4.3BSD file system */ 161 int Cflag; /* copy underlying filesystem (mfs only) */ 162 int Uflag; /* enable soft updates for file system */ 163 int fssize; /* file system size */ 164 int ntracks = NTRACKS; /* # tracks/cylinder */ 165 int nsectors = NSECTORS; /* # sectors/track */ 166 int nphyssectors; /* # sectors/track including spares */ 167 int secpercyl; /* sectors per cylinder */ 168 int trackspares = -1; /* spare sectors per track */ 169 int cylspares = -1; /* spare sectors per cylinder */ 170 int sectorsize; /* bytes/sector */ 171 int realsectorsize; /* bytes/sector in hardware */ 172 int rpm; /* revolutions/minute of drive */ 173 int interleave; /* hardware sector interleave */ 174 int trackskew = -1; /* sector 0 skew, per track */ 175 int headswitch; /* head switch time, usec */ 176 int trackseek; /* track-to-track seek, usec */ 177 int fsize = 0; /* fragment size */ 178 int bsize = 0; /* block size */ 179 int cpg = DESCPG; /* cylinders/cylinder group */ 180 int cpgflg; /* cylinders/cylinder group flag was given */ 181 int minfree = MINFREE; /* free space threshold */ 182 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 183 int density; /* number of bytes per inode */ 184 int maxcontig = 0; /* max contiguous blocks to allocate */ 185 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 186 int maxbpg; /* maximum blocks per file in a cyl group */ 187 int nrpos = NRPOS; /* # of distinguished rotational positions */ 188 int avgfilesize = AVFILESIZ;/* expected average file size */ 189 int avgfilesperdir = AFPDIR;/* expected number of files per directory */ 190 int bbsize = BBSIZE; /* boot block size */ 191 int sbsize = SBSIZE; /* superblock size */ 192 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 193 int t_or_u_flag = 0; /* user has specified -t or -u */ 194 u_long memleft; /* virtual memory available */ 195 caddr_t membase; /* start address of memory based filesystem */ 196 char *filename; 197 #ifdef COMPAT 198 char *disktype; 199 int unlabeled; 200 #endif 201 202 char device[MAXPATHLEN]; 203 char mfsdevname[256]; 204 char *progname; 205 206 struct disklabel *getdisklabel(char *, int); 207 static void rewritelabel(char *, int, struct disklabel *); 208 static void usage(void); 209 static void mfsintr(int signo); 210 211 int 212 main(int argc, char **argv) 213 { 214 int ch; 215 struct partition *pp; 216 struct disklabel *lp; 217 struct disklabel mfsfakelabel; 218 struct partition oldpartition; 219 struct stat st; 220 struct statfs *mp; 221 int fsi = 0, fso, len, n, vflag; 222 char *cp = NULL, *s1, *s2, *special; 223 const char *opstring; 224 #ifdef MFS 225 struct vfsconf vfc; 226 int error; 227 #endif 228 229 vflag = 0; 230 if ((progname = strrchr(*argv, '/'))) 231 ++progname; 232 else 233 progname = *argv; 234 235 if (strstr(progname, "mfs")) { 236 mfs = 1; 237 Nflag++; 238 } 239 240 opstring = mfs ? 241 "NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" : 242 "NOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:"; 243 while ((ch = getopt(argc, argv, opstring)) != -1) 244 switch (ch) { 245 case 'N': 246 Nflag = 1; 247 break; 248 case 'O': 249 Oflag = 1; 250 break; 251 case 'C': 252 Cflag = 1; /* MFS only */ 253 break; 254 case 'S': 255 if ((sectorsize = atoi(optarg)) <= 0) 256 fatal("%s: bad sector size", optarg); 257 break; 258 #ifdef COMPAT 259 case 'T': 260 disktype = optarg; 261 break; 262 #endif 263 case 'F': 264 filename = optarg; 265 break; 266 case 'U': 267 Uflag = 1; 268 break; 269 case 'a': 270 if ((maxcontig = atoi(optarg)) <= 0) 271 fatal("%s: bad maximum contiguous blocks", 272 optarg); 273 break; 274 case 'b': 275 if ((bsize = atoi(optarg)) < MINBSIZE) 276 fatal("%s: bad block size", optarg); 277 break; 278 case 'c': 279 if ((cpg = atoi(optarg)) <= 0) 280 fatal("%s: bad cylinders/group", optarg); 281 cpgflg++; 282 break; 283 case 'd': 284 if ((rotdelay = atoi(optarg)) < 0) 285 fatal("%s: bad rotational delay", optarg); 286 break; 287 case 'e': 288 if ((maxbpg = atoi(optarg)) <= 0) 289 fatal("%s: bad blocks per file in a cylinder group", 290 optarg); 291 break; 292 case 'f': 293 if ((fsize = atoi(optarg)) <= 0) 294 fatal("%s: bad fragment size", optarg); 295 break; 296 case 'g': 297 if ((avgfilesize = atoi(optarg)) <= 0) 298 fatal("%s: bad average file size", optarg); 299 break; 300 case 'h': 301 if ((avgfilesperdir = atoi(optarg)) <= 0) 302 fatal("%s: bad average files per dir", optarg); 303 break; 304 case 'i': 305 if ((density = atoi(optarg)) <= 0) 306 fatal("%s: bad bytes per inode", optarg); 307 break; 308 case 'k': 309 if ((trackskew = atoi(optarg)) < 0) 310 fatal("%s: bad track skew", optarg); 311 break; 312 case 'l': 313 if ((interleave = atoi(optarg)) <= 0) 314 fatal("%s: bad interleave", optarg); 315 break; 316 case 'm': 317 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 318 fatal("%s: bad free space %%", optarg); 319 break; 320 case 'n': 321 if ((nrpos = atoi(optarg)) < 0) 322 fatal("%s: bad rotational layout count", 323 optarg); 324 if (nrpos == 0) 325 nrpos = 1; 326 break; 327 case 'o': 328 if (mfs) 329 getmntopts(optarg, mopts, &mntflags, 0); 330 else { 331 if (strcmp(optarg, "space") == 0) 332 opt = FS_OPTSPACE; 333 else if (strcmp(optarg, "time") == 0) 334 opt = FS_OPTTIME; 335 else 336 fatal("%s: unknown optimization preference: use `space' or `time'", optarg); 337 } 338 break; 339 case 'p': 340 if ((trackspares = atoi(optarg)) < 0) 341 fatal("%s: bad spare sectors per track", 342 optarg); 343 break; 344 case 'r': 345 if ((rpm = atoi(optarg)) <= 0) 346 fatal("%s: bad revolutions/minute", optarg); 347 break; 348 case 's': 349 if ((fssize = atoi(optarg)) <= 0) 350 fatal("%s: bad file system size", optarg); 351 break; 352 case 't': 353 t_or_u_flag++; 354 if ((ntracks = atoi(optarg)) < 0) 355 fatal("%s: bad total tracks", optarg); 356 break; 357 case 'u': 358 t_or_u_flag++; 359 if ((nsectors = atoi(optarg)) < 0) 360 fatal("%s: bad sectors/track", optarg); 361 break; 362 case 'v': 363 vflag = 1; 364 break; 365 case 'x': 366 if ((cylspares = atoi(optarg)) < 0) 367 fatal("%s: bad spare sectors per cylinder", 368 optarg); 369 break; 370 case '?': 371 default: 372 usage(); 373 } 374 argc -= optind; 375 argv += optind; 376 377 if (argc != 2 && (mfs || argc != 1)) 378 usage(); 379 380 special = argv[0]; 381 /* Copy the NetBSD way of faking up a disk label */ 382 if (mfs && !strcmp(special, "swap")) { 383 /* 384 * it's an MFS, mounted on "swap." fake up a label. 385 * XXX XXX XXX 386 */ 387 fso = -1; /* XXX; normally done below. */ 388 389 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 390 mfsfakelabel.d_secsize = 512; 391 mfsfakelabel.d_nsectors = 64; 392 mfsfakelabel.d_ntracks = 16; 393 mfsfakelabel.d_ncylinders = 16; 394 mfsfakelabel.d_secpercyl = 1024; 395 mfsfakelabel.d_secperunit = 16384; 396 mfsfakelabel.d_rpm = 3600; 397 mfsfakelabel.d_interleave = 1; 398 mfsfakelabel.d_npartitions = 1; 399 mfsfakelabel.d_partitions[0].p_size = 16384; 400 mfsfakelabel.d_partitions[0].p_fsize = 1024; 401 mfsfakelabel.d_partitions[0].p_frag = 8; 402 mfsfakelabel.d_partitions[0].p_cpg = 16; 403 404 lp = &mfsfakelabel; 405 pp = &mfsfakelabel.d_partitions[0]; 406 407 goto havelabel; 408 } 409 410 cp = strrchr(special, '/'); 411 if (cp == 0) { 412 /* 413 * No path prefix; try /dev/%s. 414 */ 415 snprintf(device, sizeof(device), "%s%s", _PATH_DEV, special); 416 special = device; 417 } 418 if (Nflag) { 419 fso = -1; 420 } else { 421 fso = open(special, O_WRONLY); 422 if (fso < 0) 423 fatal("%s: %s", special, strerror(errno)); 424 425 /* Bail if target special is mounted */ 426 n = getmntinfo(&mp, MNT_NOWAIT); 427 if (n == 0) 428 fatal("%s: getmntinfo: %s", special, strerror(errno)); 429 430 len = sizeof(_PATH_DEV) - 1; 431 s1 = special; 432 if (strncmp(_PATH_DEV, s1, len) == 0) 433 s1 += len; 434 435 while (--n >= 0) { 436 s2 = mp->f_mntfromname; 437 if (strncmp(_PATH_DEV, s2, len) == 0) { 438 s2 += len - 1; 439 *s2 = 'r'; 440 } 441 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 442 fatal("%s is mounted on %s", 443 special, mp->f_mntonname); 444 ++mp; 445 } 446 } 447 if (mfs && disktype != NULL) { 448 lp = (struct disklabel *)getdiskbyname(disktype); 449 if (lp == NULL) 450 fatal("%s: unknown disk type", disktype); 451 pp = &lp->d_partitions[1]; 452 } else { 453 fsi = open(special, O_RDONLY); 454 if (fsi < 0) 455 fatal("%s: %s", special, strerror(errno)); 456 if (fstat(fsi, &st) < 0) 457 fatal("%s: %s", special, strerror(errno)); 458 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs) 459 printf("%s: %s: not a character-special device\n", 460 progname, special); 461 cp = strchr(argv[0], '\0'); 462 if (cp == argv[0]) 463 fatal("null special file name"); 464 cp--; 465 if (!vflag && (*cp < 'a' || *cp >= 'a' + MAXPARTITIONS) && !isdigit(*cp)) { 466 fatal("%s: can't figure out file system partition", 467 argv[0]); 468 } 469 #ifdef COMPAT 470 if (!mfs && disktype == NULL) 471 disktype = argv[1]; 472 #endif 473 lp = getdisklabel(special, fsi); 474 if (vflag || isdigit(*cp)) 475 pp = &lp->d_partitions[0]; 476 else 477 pp = &lp->d_partitions[*cp - 'a']; 478 if (pp->p_size == 0) 479 fatal("%s: `%c' partition is unavailable", 480 argv[0], *cp); 481 if (pp->p_fstype == FS_BOOT) 482 fatal("%s: `%c' partition overlaps boot program", 483 argv[0], *cp); 484 } 485 havelabel: 486 if (fssize == 0) 487 fssize = pp->p_size; 488 if ((uint32_t)fssize > pp->p_size && !mfs) 489 fatal("%s: maximum file system size on the `%c' partition is %d", 490 argv[0], *cp, pp->p_size); 491 if (rpm == 0) { 492 rpm = lp->d_rpm; 493 if (rpm <= 0) 494 rpm = 3600; 495 } 496 if (ntracks == 0) { 497 ntracks = lp->d_ntracks; 498 if (ntracks <= 0) 499 fatal("%s: no default #tracks", argv[0]); 500 } 501 if (nsectors == 0) { 502 nsectors = lp->d_nsectors; 503 if (nsectors <= 0) 504 fatal("%s: no default #sectors/track", argv[0]); 505 } 506 if (sectorsize == 0) { 507 sectorsize = lp->d_secsize; 508 if (sectorsize <= 0) 509 fatal("%s: no default sector size", argv[0]); 510 } 511 if (trackskew == -1) { 512 trackskew = lp->d_trackskew; 513 if (trackskew < 0) 514 trackskew = 0; 515 } 516 if (interleave == 0) { 517 interleave = lp->d_interleave; 518 if (interleave <= 0) 519 interleave = 1; 520 } 521 if (fsize == 0) { 522 fsize = pp->p_fsize; 523 if (fsize <= 0) 524 fsize = MAX(DFL_FRAGSIZE, lp->d_secsize); 525 } 526 if (bsize == 0) { 527 bsize = pp->p_frag * pp->p_fsize; 528 if (bsize <= 0) 529 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 530 } 531 /* 532 * Maxcontig sets the default for the maximum number of blocks 533 * that may be allocated sequentially. With filesystem clustering 534 * it is possible to allocate contiguous blocks up to the maximum 535 * transfer size permitted by the controller or buffering. 536 */ 537 if (maxcontig == 0) 538 maxcontig = MAX(1, MAXPHYS / bsize - 1); 539 if (density == 0) 540 density = NFPI * fsize; 541 if (minfree < MINFREE && opt != FS_OPTSPACE) { 542 fprintf(stderr, "Warning: changing optimization to space "); 543 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE); 544 opt = FS_OPTSPACE; 545 } 546 if (trackspares == -1) { 547 trackspares = lp->d_sparespertrack; 548 if (trackspares < 0) 549 trackspares = 0; 550 } 551 nphyssectors = nsectors + trackspares; 552 if (cylspares == -1) { 553 cylspares = lp->d_sparespercyl; 554 if (cylspares < 0) 555 cylspares = 0; 556 } 557 secpercyl = nsectors * ntracks - cylspares; 558 /* 559 * Only complain if -t or -u have been specified; the default 560 * case (4096 sectors per cylinder) is intended to disagree 561 * with the disklabel. 562 */ 563 if (t_or_u_flag && (uint32_t)secpercyl != lp->d_secpercyl) 564 fprintf(stderr, "%s (%d) %s (%lu)\n", 565 "Warning: calculated sectors per cylinder", secpercyl, 566 "disagrees with disk label", (u_long)lp->d_secpercyl); 567 if (maxbpg == 0) 568 maxbpg = MAXBLKPG(bsize); 569 headswitch = lp->d_headswitch; 570 trackseek = lp->d_trkseek; 571 #ifdef notdef /* label may be 0 if faked up by kernel */ 572 bbsize = lp->d_bbsize; 573 sbsize = lp->d_sbsize; 574 #endif 575 oldpartition = *pp; 576 #ifdef tahoe 577 realsectorsize = sectorsize; 578 if (sectorsize != DEV_BSIZE) { /* XXX */ 579 int secperblk = DEV_BSIZE / sectorsize; 580 581 sectorsize = DEV_BSIZE; 582 nsectors /= secperblk; 583 nphyssectors /= secperblk; 584 secpercyl /= secperblk; 585 fssize /= secperblk; 586 pp->p_size /= secperblk; 587 } 588 #else 589 realsectorsize = sectorsize; 590 if (sectorsize != DEV_BSIZE) { /* XXX */ 591 int secperblk = sectorsize / DEV_BSIZE; 592 593 sectorsize = DEV_BSIZE; 594 nsectors *= secperblk; 595 nphyssectors *= secperblk; 596 secpercyl *= secperblk; 597 fssize *= secperblk; 598 pp->p_size *= secperblk; 599 } 600 #endif 601 if (mfs) { 602 mfs_mtpt = argv[1]; 603 if ( 604 stat(mfs_mtpt, &mfs_mtstat) < 0 || 605 !S_ISDIR(mfs_mtstat.st_mode) 606 ) { 607 fatal("mount point not dir: %s", mfs_mtpt); 608 } 609 } 610 mkfs(pp, special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL); 611 #ifdef tahoe 612 if (realsectorsize != DEV_BSIZE) 613 pp->p_size *= DEV_BSIZE / realsectorsize; 614 #else 615 if (realsectorsize != DEV_BSIZE) 616 pp->p_size /= realsectorsize /DEV_BSIZE; 617 #endif 618 if (!Nflag && bcmp(pp, &oldpartition, sizeof(oldpartition))) 619 rewritelabel(special, fso, lp); 620 if (!Nflag) 621 close(fso); 622 close(fsi); 623 #ifdef MFS 624 if (mfs) { 625 struct mfs_args args; 626 int udev; 627 628 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d", 629 getpid()); 630 args.fspec = mfsdevname; 631 args.export.ex_root = -2; 632 if (mntflags & MNT_RDONLY) 633 args.export.ex_flags = MNT_EXRDONLY; 634 else 635 args.export.ex_flags = 0; 636 args.base = membase; 637 args.size = fssize * sectorsize; 638 639 error = getvfsbyname("mfs", &vfc); 640 if (error && vfsisloadable("mfs")) { 641 if (vfsload("mfs")) 642 fatal("vfsload(mfs)"); 643 endvfsent(); /* flush cache */ 644 error = getvfsbyname("mfs", &vfc); 645 } 646 if (error) 647 fatal("mfs filesystem not available"); 648 649 udev = (253 << 8) | (getpid() & 255) | 650 ((getpid() & ~0xFF) << 8); 651 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0) 652 printf("Warning: unable to create %s\n", mfsdevname); 653 signal(SIGINT, mfsintr); 654 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0) 655 fatal("%s: %s", argv[1], strerror(errno)); 656 signal(SIGINT, SIG_DFL); 657 mfsintr(SIGINT); 658 } 659 #endif 660 exit(0); 661 } 662 663 #ifdef MFS 664 665 static void 666 mfsintr(__unused int signo) 667 { 668 if (filename) 669 munmap(membase, fssize * sectorsize); 670 remove(mfsdevname); 671 } 672 673 #endif 674 675 #ifdef COMPAT 676 char lmsg[] = "%s: can't read disk label; disk type must be specified"; 677 #else 678 char lmsg[] = "%s: can't read disk label"; 679 #endif 680 681 struct disklabel * 682 getdisklabel(char *s, int fd) 683 { 684 static struct disklabel lab; 685 686 if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { 687 #ifdef COMPAT 688 if (disktype) { 689 struct disklabel *lp; 690 691 unlabeled++; 692 lp = getdiskbyname(disktype); 693 if (lp == NULL) 694 fatal("%s: unknown disk type", disktype); 695 return (lp); 696 } 697 #endif 698 warn("ioctl (GDINFO)"); 699 fatal(lmsg, s); 700 } 701 return (&lab); 702 } 703 704 static void 705 rewritelabel(char *s, int fd, struct disklabel *lp) 706 { 707 #ifdef COMPAT 708 if (unlabeled) 709 return; 710 #endif 711 lp->d_checksum = 0; 712 lp->d_checksum = dkcksum(lp); 713 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 714 warn("ioctl (WDINFO)"); 715 fatal("%s: can't rewrite disk label", s); 716 } 717 } 718 719 /*VARARGS*/ 720 void 721 fatal(const char *fmt, ...) 722 { 723 va_list ap; 724 725 va_start(ap, fmt); 726 if (fcntl(STDERR_FILENO, F_GETFL) < 0) { 727 openlog(progname, LOG_CONS, LOG_DAEMON); 728 vsyslog(LOG_ERR, fmt, ap); 729 closelog(); 730 } else { 731 vwarnx(fmt, ap); 732 } 733 va_end(ap); 734 exit(1); 735 /*NOTREACHED*/ 736 } 737 738 static void 739 usage(void) 740 { 741 if (mfs) { 742 fprintf(stderr, 743 "usage: %s [ -fsoptions ] special-device mount-point\n", 744 progname); 745 } else 746 fprintf(stderr, 747 "usage: %s [ -fsoptions ] special-device%s\n", 748 progname, 749 #ifdef COMPAT 750 " [device-type]"); 751 #else 752 ""); 753 #endif 754 fprintf(stderr, "where fsoptions are:\n"); 755 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n"); 756 fprintf(stderr, 757 "\t-N do not create file system, just print out parameters\n"); 758 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 759 fprintf(stderr, "\t-S sector size\n"); 760 #ifdef COMPAT 761 fprintf(stderr, "\t-T disktype\n"); 762 #endif 763 fprintf(stderr, "\t-U enable soft updates\n"); 764 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 765 fprintf(stderr, "\t-b block size\n"); 766 fprintf(stderr, "\t-c cylinders/group\n"); 767 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 768 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 769 fprintf(stderr, "\t-f frag size\n"); 770 fprintf(stderr, "\t-g average file size\n"); 771 fprintf(stderr, "\t-h average files per directory\n"); 772 fprintf(stderr, "\t-i number of bytes per inode\n"); 773 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 774 fprintf(stderr, "\t-l hardware sector interleave\n"); 775 fprintf(stderr, "\t-m minimum free space %%\n"); 776 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 777 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 778 fprintf(stderr, "\t-p spare sectors per track\n"); 779 fprintf(stderr, "\t-s file system size (sectors)\n"); 780 fprintf(stderr, "\t-r revolutions/minute\n"); 781 fprintf(stderr, "\t-t tracks/cylinder\n"); 782 fprintf(stderr, "\t-u sectors/track\n"); 783 fprintf(stderr, 784 "\t-v do not attempt to determine partition name from device name\n"); 785 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 786 exit(1); 787 } 788