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 1.17 2007/06/19 19:18:20 dillon 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/diskslice.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 #include <disktab.h> 63 64 #ifdef MFS 65 #include <sys/types.h> 66 #include <sys/mman.h> 67 #endif 68 69 #if __STDC__ 70 #include <stdarg.h> 71 #else 72 #include <varargs.h> 73 #endif 74 75 #include "mntopts.h" 76 #include "defs.h" 77 78 struct mntopt mopts[] = { 79 MOPT_STDOPTS, 80 MOPT_ASYNC, 81 MOPT_NULL, 82 }; 83 84 void fatal(const char *fmt, ...); 85 86 #define COMPAT /* allow non-labeled disks */ 87 88 /* 89 * The following two constants set the default block and fragment sizes. 90 * Both constants must be a power of 2 and meet the following constraints: 91 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 92 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 93 * DESBLKSIZE / DESFRAGSIZE <= 8 94 */ 95 #define DFL_FRAGSIZE 2048 96 #define DFL_BLKSIZE 16384 97 98 /* 99 * Cylinder groups may have up to many cylinders. The actual 100 * number used depends upon how much information can be stored 101 * on a single cylinder. The default is to use as many as possible 102 * cylinders per group. 103 */ 104 #define DESCPG 65536 /* desired fs_cpg ("infinity") */ 105 106 /* 107 * Once upon a time... 108 * ROTDELAY gives the minimum number of milliseconds to initiate 109 * another disk transfer on the same cylinder. It is used in 110 * determining the rotationally optimal layout for disk blocks 111 * within a file; the default of fs_rotdelay is 4ms. 112 * 113 * ...but now we make this 0 to disable the rotdelay delay because 114 * modern drives with read/write-behind achieve higher performance 115 * without the delay. 116 */ 117 #define ROTDELAY 0 118 119 /* 120 * MAXBLKPG determines the maximum number of data blocks which are 121 * placed in a single cylinder group. The default is one indirect 122 * block worth of data blocks. 123 */ 124 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 125 126 /* 127 * Each file system has a number of inodes statically allocated. 128 * We allocate one inode slot per NFPI fragments, expecting this 129 * to be far more than we will ever need. 130 */ 131 #define NFPI 4 132 133 /* 134 * Once upon a time... 135 * For each cylinder we keep track of the availability of blocks at different 136 * rotational positions, so that we can lay out the data to be picked 137 * up with minimum rotational latency. NRPOS is the default number of 138 * rotational positions that we distinguish. With NRPOS of 8 the resolution 139 * of our summary information is 2ms for a typical 3600 rpm drive. 140 * 141 * ...but now we make this 1 (which essentially disables the rotational 142 * position table because modern drives with read-ahead and write-behind do 143 * better without the rotational position table. 144 */ 145 #define NRPOS 1 /* number distinct rotational positions */ 146 147 /* 148 * About the same time as the above, we knew what went where on the disks. 149 * no longer so, so kill the code which finds the different platters too... 150 * We do this by saying one head, with a lot of sectors on it. 151 * The number of sectors are used to determine the size of a cyl-group. 152 * Kirk suggested one or two meg per "cylinder" so we say two. 153 */ 154 #define NTRACKS 1 /* number of heads */ 155 #define NSECTORS 4096 /* number of sectors */ 156 157 int mfs; /* run as the memory based filesystem */ 158 char *mfs_mtpt; /* mount point for mfs */ 159 struct stat mfs_mtstat; /* stat prior to mount */ 160 int Lflag; /* add a volume label */ 161 int Nflag; /* run without writing file system */ 162 int Oflag; /* format as an 4.3BSD file system */ 163 int Cflag; /* copy underlying filesystem (mfs only) */ 164 int Uflag; /* enable soft updates for file system */ 165 u_long fssize; /* file system size */ 166 int ntracks = NTRACKS; /* # tracks/cylinder */ 167 int nsectors = NSECTORS; /* # sectors/track */ 168 int nphyssectors; /* # sectors/track including spares */ 169 int secpercyl; /* sectors per cylinder */ 170 int trackspares = -1; /* spare sectors per track */ 171 int cylspares = -1; /* spare sectors per cylinder */ 172 int sectorsize; /* bytes/sector */ 173 int realsectorsize; /* bytes/sector in hardware */ 174 int rpm; /* revolutions/minute of drive */ 175 int interleave; /* hardware sector interleave */ 176 int trackskew = -1; /* sector 0 skew, per track */ 177 int headswitch; /* head switch time, usec */ 178 int trackseek; /* track-to-track seek, usec */ 179 int fsize = 0; /* fragment size */ 180 int bsize = 0; /* block size */ 181 int cpg = DESCPG; /* cylinders/cylinder group */ 182 int cpgflg; /* cylinders/cylinder group flag was given */ 183 int minfree = MINFREE; /* free space threshold */ 184 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 185 int density; /* number of bytes per inode */ 186 int maxcontig = 0; /* max contiguous blocks to allocate */ 187 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 188 int maxbpg; /* maximum blocks per file in a cyl group */ 189 int nrpos = NRPOS; /* # of distinguished rotational positions */ 190 int avgfilesize = AVFILESIZ;/* expected average file size */ 191 int avgfilesperdir = AFPDIR;/* expected number of files per directory */ 192 int bbsize = BBSIZE; /* boot block size */ 193 int sbsize = SBSIZE; /* superblock size */ 194 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 195 int t_or_u_flag = 0; /* user has specified -t or -u */ 196 caddr_t membase; /* start address of memory based filesystem */ 197 char *filename; 198 u_char *volumelabel = NULL; /* volume label for filesystem */ 199 #ifdef COMPAT 200 char *disktype; 201 int unlabeled; 202 #endif 203 204 char mfsdevname[256]; 205 char *progname; 206 207 static void usage(void); 208 static void mfsintr(int signo); 209 210 int 211 main(int argc, char **argv) 212 { 213 int ch, i; 214 struct disktab geom; /* disk geometry data */ 215 struct stat st; 216 struct statfs *mp; 217 int fsi = -1, fso = -1, len, n, vflag; 218 char *s1, *s2, *special; 219 const char *opstring; 220 #ifdef MFS 221 struct vfsconf vfc; 222 int error; 223 #endif 224 225 bzero(&geom, sizeof(geom)); 226 vflag = 0; 227 if ((progname = strrchr(*argv, '/'))) 228 ++progname; 229 else 230 progname = *argv; 231 232 if (strstr(progname, "mfs")) { 233 mfs = 1; 234 Nflag++; 235 } 236 237 opstring = mfs ? 238 "L:NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" : 239 "L:NOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:"; 240 while ((ch = getopt(argc, argv, opstring)) != -1) { 241 switch (ch) { 242 case 'L': 243 volumelabel = optarg; 244 i = -1; 245 while (isalnum(volumelabel[++i])) 246 ; 247 if (volumelabel[i] != '\0') 248 errx(1, "bad volume label. Valid characters are alphanumerics."); 249 if (strlen(volumelabel) >= MAXVOLLEN) 250 errx(1, "bad volume label. Length is longer than %d.", 251 MAXVOLLEN); 252 Lflag = 1; 253 break; 254 case 'N': 255 Nflag = 1; 256 break; 257 case 'O': 258 Oflag = 1; 259 break; 260 case 'C': 261 Cflag = 1; /* MFS only */ 262 break; 263 case 'S': 264 if ((sectorsize = atoi(optarg)) <= 0) 265 fatal("%s: bad sector size", optarg); 266 break; 267 #ifdef COMPAT 268 case 'T': 269 disktype = optarg; 270 break; 271 #endif 272 case 'F': 273 filename = optarg; 274 break; 275 case 'U': 276 Uflag = 1; 277 break; 278 case 'a': 279 if ((maxcontig = atoi(optarg)) <= 0) 280 fatal("%s: bad maximum contiguous blocks", 281 optarg); 282 break; 283 case 'b': 284 if ((bsize = atoi(optarg)) < MINBSIZE) 285 fatal("%s: bad block size", optarg); 286 break; 287 case 'c': 288 if ((cpg = atoi(optarg)) <= 0) 289 fatal("%s: bad cylinders/group", optarg); 290 cpgflg++; 291 break; 292 case 'd': 293 if ((rotdelay = atoi(optarg)) < 0) 294 fatal("%s: bad rotational delay", optarg); 295 break; 296 case 'e': 297 if ((maxbpg = atoi(optarg)) <= 0) 298 fatal("%s: bad blocks per file in a cylinder group", 299 optarg); 300 break; 301 case 'f': 302 if ((fsize = atoi(optarg)) <= 0) 303 fatal("%s: bad fragment size", optarg); 304 break; 305 case 'g': 306 if ((avgfilesize = atoi(optarg)) <= 0) 307 fatal("%s: bad average file size", optarg); 308 break; 309 case 'h': 310 if ((avgfilesperdir = atoi(optarg)) <= 0) 311 fatal("%s: bad average files per dir", optarg); 312 break; 313 case 'i': 314 if ((density = atoi(optarg)) <= 0) 315 fatal("%s: bad bytes per inode", optarg); 316 break; 317 case 'k': 318 if ((trackskew = atoi(optarg)) < 0) 319 fatal("%s: bad track skew", optarg); 320 break; 321 case 'l': 322 if ((interleave = atoi(optarg)) <= 0) 323 fatal("%s: bad interleave", optarg); 324 break; 325 case 'm': 326 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 327 fatal("%s: bad free space %%", optarg); 328 break; 329 case 'n': 330 if ((nrpos = atoi(optarg)) < 0) 331 fatal("%s: bad rotational layout count", 332 optarg); 333 if (nrpos == 0) 334 nrpos = 1; 335 break; 336 case 'o': 337 if (mfs) 338 getmntopts(optarg, mopts, &mntflags, 0); 339 else { 340 if (strcmp(optarg, "space") == 0) 341 opt = FS_OPTSPACE; 342 else if (strcmp(optarg, "time") == 0) 343 opt = FS_OPTTIME; 344 else 345 fatal("%s: unknown optimization preference: use `space' or `time'", optarg); 346 } 347 break; 348 case 'p': 349 if ((trackspares = atoi(optarg)) < 0) 350 fatal("%s: bad spare sectors per track", 351 optarg); 352 break; 353 case 'r': 354 if ((rpm = atoi(optarg)) <= 0) 355 fatal("%s: bad revolutions/minute", optarg); 356 break; 357 case 's': 358 /* 359 * Unsigned long but limit to long. On 32 bit a 360 * tad under 2G, on 64 bit the upper bound is more 361 * swap space then operand size. 362 * 363 * NOTE: fssize is converted from 512 byte sectors 364 * to filesystem block-sized sectors by mkfs XXX. 365 */ 366 fssize = strtoul(optarg, NULL, 10); 367 if (fssize == 0 || fssize > LONG_MAX) 368 fatal("%s: bad file system size", optarg); 369 break; 370 case 't': 371 t_or_u_flag++; 372 if ((ntracks = atoi(optarg)) < 0) 373 fatal("%s: bad total tracks", optarg); 374 break; 375 case 'u': 376 t_or_u_flag++; 377 if ((nsectors = atoi(optarg)) < 0) 378 fatal("%s: bad sectors/track", optarg); 379 break; 380 case 'v': 381 vflag = 1; 382 break; 383 case 'x': 384 if ((cylspares = atoi(optarg)) < 0) 385 fatal("%s: bad spare sectors per cylinder", 386 optarg); 387 break; 388 case '?': 389 default: 390 usage(); 391 } 392 } 393 argc -= optind; 394 argv += optind; 395 396 if (argc != 2 && (mfs || argc != 1)) 397 usage(); 398 399 special = argv[0]; 400 /* Copy the NetBSD way of faking up a disk label */ 401 if (mfs && !strcmp(special, "swap")) { 402 /* 403 * it's an MFS, mounted on "swap." fake up a label. 404 * XXX XXX XXX 405 */ 406 fso = -1; /* XXX; normally done below. */ 407 408 geom.d_media_blksize = 512; 409 geom.d_nheads = 16; 410 geom.d_secpertrack = 64; 411 /* geom.d_ncylinders not used */ 412 geom.d_secpercyl = 1024; 413 geom.d_media_blocks = 16384; 414 geom.d_rpm = 3600; 415 geom.d_interleave = 1; 416 417 goto havelabel; 418 } 419 420 /* 421 * If we can't stat the device and the path is relative, try 422 * prepending /dev. 423 */ 424 if (stat(special, &st) < 0 && special[0] && special[0] != '/') 425 asprintf(&special, "/dev/%s", special); 426 427 if (Nflag) { 428 fso = -1; 429 } else { 430 fso = open(special, O_WRONLY); 431 if (fso < 0) 432 fatal("%s: %s", special, strerror(errno)); 433 434 /* Bail if target special is mounted */ 435 n = getmntinfo(&mp, MNT_NOWAIT); 436 if (n == 0) 437 fatal("%s: getmntinfo: %s", special, strerror(errno)); 438 439 len = sizeof(_PATH_DEV) - 1; 440 s1 = special; 441 if (strncmp(_PATH_DEV, s1, len) == 0) 442 s1 += len; 443 444 while (--n >= 0) { 445 s2 = mp->f_mntfromname; 446 if (strncmp(_PATH_DEV, s2, len) == 0) { 447 s2 += len - 1; 448 *s2 = 'r'; 449 } 450 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 451 fatal("%s is mounted on %s", 452 special, mp->f_mntonname); 453 ++mp; 454 } 455 } 456 if (mfs && disktype != NULL) { 457 struct disktab *dt; 458 459 if ((dt = getdisktabbyname(disktype)) == NULL) 460 fatal("%s: unknown disk type", disktype); 461 geom = *dt; 462 } else { 463 struct partinfo pinfo; 464 465 if (special[0] == 0) 466 fatal("null special file name"); 467 fsi = open(special, O_RDONLY); 468 if (fsi < 0) 469 fatal("%s: %s", special, strerror(errno)); 470 if (fstat(fsi, &st) < 0) 471 fatal("%s: %s", special, strerror(errno)); 472 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag) 473 printf("%s: %s: not a character-special device\n", 474 progname, special); 475 #ifdef COMPAT 476 if (!mfs && disktype == NULL) 477 disktype = argv[1]; 478 #endif 479 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) { 480 if (!vflag) { 481 fatal("%s: unable to retrieve geometry " 482 "information", argv[0]); 483 } 484 /* 485 * fake up geometry data 486 */ 487 geom.d_media_blksize = 512; 488 geom.d_nheads = 16; 489 geom.d_secpertrack = 64; 490 geom.d_secpercyl = 1024; 491 geom.d_media_blocks = st.st_size / 492 geom.d_media_blksize; 493 geom.d_media_size = geom.d_media_blocks * 494 geom.d_media_blksize; 495 /* geom.d_ncylinders not used */ 496 } else { 497 /* 498 * extract geometry from pinfo 499 */ 500 geom.d_media_blksize = pinfo.media_blksize; 501 geom.d_nheads = pinfo.d_nheads; 502 geom.d_secpertrack = pinfo.d_secpertrack; 503 geom.d_secpercyl = pinfo.d_secpercyl; 504 /* geom.d_ncylinders not used */ 505 geom.d_media_blocks = pinfo.media_blocks; 506 geom.d_media_size = pinfo.media_size; 507 } 508 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) { 509 fatal("%s: is unavailable", argv[0]); 510 } 511 printf("%s: media size %6.2fMB\n", 512 argv[0], geom.d_media_size / 1024.0 / 1024.0); 513 if (geom.d_media_size / 512 >= 0x80000000ULL) 514 fatal("%s: media size is too large for newfs to handle", 515 argv[0]); 516 } 517 havelabel: 518 if (fssize == 0) 519 fssize = geom.d_media_blocks; 520 if ((u_long)fssize > geom.d_media_blocks && !mfs) { 521 fatal("%s: maximum file system size is %lld blocks", 522 argv[0], geom.d_media_blocks); 523 } 524 if (rpm == 0) { 525 rpm = geom.d_rpm; 526 if (rpm <= 0) 527 rpm = 3600; 528 } 529 if (ntracks == 0) { 530 ntracks = geom.d_nheads; 531 if (ntracks <= 0) 532 fatal("%s: no default #tracks", argv[0]); 533 } 534 if (nsectors == 0) { 535 nsectors = geom.d_secpertrack; 536 if (nsectors <= 0) 537 fatal("%s: no default #sectors/track", argv[0]); 538 } 539 if (sectorsize == 0) { 540 sectorsize = geom.d_media_blksize; 541 if (sectorsize <= 0) 542 fatal("%s: no default sector size", argv[0]); 543 } 544 if (trackskew == -1) { 545 trackskew = geom.d_trackskew; 546 if (trackskew < 0) 547 trackskew = 0; 548 } 549 if (interleave == 0) { 550 interleave = geom.d_interleave; 551 if (interleave <= 0) 552 interleave = 1; 553 } 554 if (fsize == 0) 555 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize); 556 if (bsize == 0) 557 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 558 /* 559 * Maxcontig sets the default for the maximum number of blocks 560 * that may be allocated sequentially. With filesystem clustering 561 * it is possible to allocate contiguous blocks up to the maximum 562 * transfer size permitted by the controller or buffering. 563 */ 564 if (maxcontig == 0) 565 maxcontig = MAX(1, MAXPHYS / bsize - 1); 566 if (density == 0) 567 density = NFPI * fsize; 568 if (minfree < MINFREE && opt != FS_OPTSPACE) { 569 fprintf(stderr, "Warning: changing optimization to space "); 570 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE); 571 opt = FS_OPTSPACE; 572 } 573 if (trackspares == -1) 574 trackspares = 0; 575 nphyssectors = nsectors + trackspares; 576 if (cylspares == -1) 577 cylspares = 0; 578 secpercyl = nsectors * ntracks - cylspares; 579 /* 580 * Only complain if -t or -u have been specified; the default 581 * case (4096 sectors per cylinder) is intended to disagree 582 * with the disklabel. 583 */ 584 if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl) 585 fprintf(stderr, "%s (%d) %s (%u)\n", 586 "Warning: calculated sectors per cylinder", secpercyl, 587 "disagrees with disk label", geom.d_secpercyl); 588 if (maxbpg == 0) 589 maxbpg = MAXBLKPG(bsize); 590 headswitch = geom.d_headswitch; 591 trackseek = geom.d_trkseek; 592 realsectorsize = sectorsize; 593 if (sectorsize != DEV_BSIZE) { /* XXX */ 594 int secperblk = sectorsize / DEV_BSIZE; 595 596 sectorsize = DEV_BSIZE; 597 nsectors *= secperblk; 598 nphyssectors *= secperblk; 599 secpercyl *= secperblk; 600 fssize *= secperblk; 601 } 602 if (mfs) { 603 mfs_mtpt = argv[1]; 604 if ( 605 stat(mfs_mtpt, &mfs_mtstat) < 0 || 606 !S_ISDIR(mfs_mtstat.st_mode) 607 ) { 608 fatal("mount point not dir: %s", mfs_mtpt); 609 } 610 } 611 mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL); 612 613 /* 614 * NOTE: Newfs no longer accesses or attempts to update the 615 * filesystem disklabel. 616 * 617 * NOTE: fssize is converted from 512 byte sectors 618 * to filesystem block-sized sectors by mkfs XXX. 619 */ 620 if (!Nflag) 621 close(fso); 622 close(fsi); 623 #ifdef MFS 624 if (mfs) { 625 struct mfs_args args; 626 627 bzero(&args, sizeof(args)); 628 629 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d", 630 getpid()); 631 args.fspec = mfsdevname; 632 args.export.ex_root = -2; 633 if (mntflags & MNT_RDONLY) 634 args.export.ex_flags = MNT_EXRDONLY; 635 else 636 args.export.ex_flags = 0; 637 args.base = membase; 638 args.size = fssize * fsize; 639 640 error = getvfsbyname("mfs", &vfc); 641 if (error && vfsisloadable("mfs")) { 642 if (vfsload("mfs")) 643 fatal("vfsload(mfs)"); 644 endvfsent(); /* flush cache */ 645 error = getvfsbyname("mfs", &vfc); 646 } 647 if (error) 648 fatal("mfs filesystem not available"); 649 650 #if 0 651 int udev; 652 udev = (253 << 8) | (getpid() & 255) | 653 ((getpid() & ~0xFF) << 8); 654 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0) 655 printf("Warning: unable to create %s\n", mfsdevname); 656 #endif 657 signal(SIGINT, mfsintr); 658 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0) 659 fatal("%s: %s", argv[1], strerror(errno)); 660 signal(SIGINT, SIG_DFL); 661 mfsintr(SIGINT); 662 } 663 #endif 664 exit(0); 665 } 666 667 #ifdef MFS 668 669 static void 670 mfsintr(__unused int signo) 671 { 672 if (filename) 673 munmap(membase, fssize * fsize); 674 #if 0 675 remove(mfsdevname); 676 #endif 677 } 678 679 #endif 680 681 /*VARARGS*/ 682 void 683 fatal(const char *fmt, ...) 684 { 685 va_list ap; 686 687 va_start(ap, fmt); 688 if (fcntl(STDERR_FILENO, F_GETFL) < 0) { 689 openlog(progname, LOG_CONS, LOG_DAEMON); 690 vsyslog(LOG_ERR, fmt, ap); 691 closelog(); 692 } else { 693 vwarnx(fmt, ap); 694 } 695 va_end(ap); 696 exit(1); 697 /*NOTREACHED*/ 698 } 699 700 static void 701 usage(void) 702 { 703 if (mfs) { 704 fprintf(stderr, 705 "usage: %s [ -fsoptions ] special-device mount-point\n", 706 progname); 707 } else 708 fprintf(stderr, 709 "usage: %s [ -fsoptions ] special-device%s\n", 710 progname, 711 #ifdef COMPAT 712 " [device-type]"); 713 #else 714 ""); 715 #endif 716 fprintf(stderr, "where fsoptions are:\n"); 717 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n"); 718 fprintf(stderr, "\t-L volume name\n"); 719 fprintf(stderr, 720 "\t-N do not create file system, just print out parameters\n"); 721 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 722 fprintf(stderr, "\t-S sector size\n"); 723 #ifdef COMPAT 724 fprintf(stderr, "\t-T disktype\n"); 725 #endif 726 fprintf(stderr, "\t-U enable soft updates\n"); 727 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 728 fprintf(stderr, "\t-b block size\n"); 729 fprintf(stderr, "\t-c cylinders/group\n"); 730 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 731 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 732 fprintf(stderr, "\t-f frag size\n"); 733 fprintf(stderr, "\t-g average file size\n"); 734 fprintf(stderr, "\t-h average files per directory\n"); 735 fprintf(stderr, "\t-i number of bytes per inode\n"); 736 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 737 fprintf(stderr, "\t-l hardware sector interleave\n"); 738 fprintf(stderr, "\t-m minimum free space %%\n"); 739 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 740 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 741 fprintf(stderr, "\t-p spare sectors per track\n"); 742 fprintf(stderr, "\t-s file system size (sectors)\n"); 743 fprintf(stderr, "\t-r revolutions/minute\n"); 744 fprintf(stderr, "\t-t tracks/cylinder\n"); 745 fprintf(stderr, "\t-u sectors/track\n"); 746 fprintf(stderr, 747 "\t-v do not attempt to determine partition name from device name\n"); 748 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 749 exit(1); 750 } 751