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 <inttypes.h> 57 #include <paths.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <string.h> 61 #include <syslog.h> 62 #include <unistd.h> 63 #include <disktab.h> 64 65 #ifdef MFS 66 #include <sys/types.h> 67 #include <sys/mman.h> 68 #endif 69 70 #if __STDC__ 71 #include <stdarg.h> 72 #else 73 #include <varargs.h> 74 #endif 75 76 #include "mntopts.h" 77 #include "defs.h" 78 79 struct mntopt mopts[] = { 80 MOPT_STDOPTS, 81 MOPT_ASYNC, 82 MOPT_NULL, 83 }; 84 85 void fatal(const char *fmt, ...) __printflike(1, 2); 86 87 #define COMPAT /* allow non-labeled disks */ 88 89 /* 90 * The following two constants set the default block and fragment sizes. 91 * Both constants must be a power of 2 and meet the following constraints: 92 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 93 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 94 * DESBLKSIZE / DESFRAGSIZE <= 8 95 */ 96 #define DFL_FRAGSIZE 2048 97 #define DFL_BLKSIZE 16384 98 99 /* 100 * Cylinder groups may have up to many cylinders. The actual 101 * number used depends upon how much information can be stored 102 * on a single cylinder. The default is to use as many as possible 103 * cylinders per group. 104 */ 105 #define DESCPG 65536 /* desired fs_cpg ("infinity") */ 106 107 /* 108 * Once upon a time... 109 * ROTDELAY gives the minimum number of milliseconds to initiate 110 * another disk transfer on the same cylinder. It is used in 111 * determining the rotationally optimal layout for disk blocks 112 * within a file; the default of fs_rotdelay is 4ms. 113 * 114 * ...but now we make this 0 to disable the rotdelay delay because 115 * modern drives with read/write-behind achieve higher performance 116 * without the delay. 117 */ 118 #define ROTDELAY 0 119 120 /* 121 * MAXBLKPG determines the maximum number of data blocks which are 122 * placed in a single cylinder group. The default is one indirect 123 * block worth of data blocks. 124 */ 125 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 126 127 /* 128 * Each file system has a number of inodes statically allocated. 129 * We allocate one inode slot per NFPI fragments, expecting this 130 * to be far more than we will ever need. 131 */ 132 #define NFPI 4 133 134 /* 135 * Once upon a time... 136 * For each cylinder we keep track of the availability of blocks at different 137 * rotational positions, so that we can lay out the data to be picked 138 * up with minimum rotational latency. NRPOS is the default number of 139 * rotational positions that we distinguish. With NRPOS of 8 the resolution 140 * of our summary information is 2ms for a typical 3600 rpm drive. 141 * 142 * ...but now we make this 1 (which essentially disables the rotational 143 * position table because modern drives with read-ahead and write-behind do 144 * better without the rotational position table. 145 */ 146 #define NRPOS 1 /* number distinct rotational positions */ 147 148 /* 149 * About the same time as the above, we knew what went where on the disks. 150 * no longer so, so kill the code which finds the different platters too... 151 * We do this by saying one head, with a lot of sectors on it. 152 * The number of sectors are used to determine the size of a cyl-group. 153 * Kirk suggested one or two meg per "cylinder" so we say two. 154 */ 155 #define NTRACKS 1 /* number of heads */ 156 #define NSECTORS 4096 /* number of sectors */ 157 158 int mfs; /* run as the memory based filesystem */ 159 char *mfs_mtpt; /* mount point for mfs */ 160 struct stat mfs_mtstat; /* stat prior to mount */ 161 int Lflag; /* add a volume label */ 162 int Nflag; /* run without writing file system */ 163 int Oflag; /* format as an 4.3BSD file system */ 164 int Cflag; /* copy underlying filesystem (mfs only) */ 165 int Uflag; /* enable soft updates for file system */ 166 u_long fssize; /* file system size */ 167 int ntracks = NTRACKS; /* # tracks/cylinder */ 168 int nsectors = NSECTORS; /* # sectors/track */ 169 int nphyssectors; /* # sectors/track including spares */ 170 int secpercyl; /* sectors per cylinder */ 171 int trackspares = -1; /* spare sectors per track */ 172 int cylspares = -1; /* spare sectors per cylinder */ 173 int sectorsize; /* bytes/sector */ 174 int realsectorsize; /* bytes/sector in hardware */ 175 int rpm; /* revolutions/minute of drive */ 176 int interleave; /* hardware sector interleave */ 177 int trackskew = -1; /* sector 0 skew, per track */ 178 int headswitch; /* head switch time, usec */ 179 int trackseek; /* track-to-track seek, usec */ 180 int fsize = 0; /* fragment size */ 181 int bsize = 0; /* block size */ 182 int cpg = DESCPG; /* cylinders/cylinder group */ 183 int cpgflg; /* cylinders/cylinder group flag was given */ 184 int minfree = MINFREE; /* free space threshold */ 185 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 186 int density; /* number of bytes per inode */ 187 int maxcontig = 0; /* max contiguous blocks to allocate */ 188 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 189 int maxbpg; /* maximum blocks per file in a cyl group */ 190 int nrpos = NRPOS; /* # of distinguished rotational positions */ 191 int avgfilesize = AVFILESIZ;/* expected average file size */ 192 int avgfilesperdir = AFPDIR;/* expected number of files per directory */ 193 int bbsize = BBSIZE; /* boot block size */ 194 int sbsize = SBSIZE; /* superblock size */ 195 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 196 int t_or_u_flag = 0; /* user has specified -t or -u */ 197 caddr_t membase; /* start address of memory based filesystem */ 198 char *filename; 199 u_char *volumelabel = NULL; /* volume label for filesystem */ 200 #ifdef COMPAT 201 char *disktype; 202 int unlabeled; 203 #endif 204 205 char mfsdevname[256]; 206 char *progname; 207 208 static void usage(void); 209 static void mfsintr(int signo); 210 211 int 212 main(int argc, char **argv) 213 { 214 int ch, i; 215 struct disktab geom; /* disk geometry data */ 216 struct stat st; 217 struct statfs *mp; 218 int fsi = -1, fso = -1, len, n, vflag; 219 char *s1, *s2, *special; 220 const char *opstring; 221 #ifdef MFS 222 struct vfsconf vfc; 223 int error; 224 #endif 225 226 bzero(&geom, sizeof(geom)); 227 vflag = 0; 228 if ((progname = strrchr(*argv, '/'))) 229 ++progname; 230 else 231 progname = *argv; 232 233 if (strstr(progname, "mfs")) { 234 mfs = 1; 235 Nflag++; 236 } 237 238 opstring = mfs ? 239 "L:NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" : 240 "L:NOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:"; 241 while ((ch = getopt(argc, argv, opstring)) != -1) { 242 switch (ch) { 243 case 'L': 244 volumelabel = optarg; 245 i = -1; 246 while (isalnum(volumelabel[++i])) 247 ; 248 if (volumelabel[i] != '\0') 249 errx(1, "bad volume label. Valid characters are alphanumerics."); 250 if (strlen(volumelabel) >= MAXVOLLEN) 251 errx(1, "bad volume label. Length is longer than %d.", 252 MAXVOLLEN); 253 Lflag = 1; 254 break; 255 case 'N': 256 Nflag = 1; 257 break; 258 case 'O': 259 Oflag = 1; 260 break; 261 case 'C': 262 Cflag = 1; /* MFS only */ 263 break; 264 case 'S': 265 if ((sectorsize = atoi(optarg)) <= 0) 266 fatal("%s: bad sector size", optarg); 267 break; 268 #ifdef COMPAT 269 case 'T': 270 disktype = optarg; 271 break; 272 #endif 273 case 'F': 274 filename = optarg; 275 break; 276 case 'U': 277 Uflag = 1; 278 break; 279 case 'a': 280 if ((maxcontig = atoi(optarg)) <= 0) 281 fatal("%s: bad maximum contiguous blocks", 282 optarg); 283 break; 284 case 'b': 285 if ((bsize = atoi(optarg)) < MINBSIZE) 286 fatal("%s: bad block size", optarg); 287 break; 288 case 'c': 289 if ((cpg = atoi(optarg)) <= 0) 290 fatal("%s: bad cylinders/group", optarg); 291 cpgflg++; 292 break; 293 case 'd': 294 if ((rotdelay = atoi(optarg)) < 0) 295 fatal("%s: bad rotational delay", optarg); 296 break; 297 case 'e': 298 if ((maxbpg = atoi(optarg)) <= 0) 299 fatal("%s: bad blocks per file in a cylinder group", 300 optarg); 301 break; 302 case 'f': 303 if ((fsize = atoi(optarg)) <= 0) 304 fatal("%s: bad fragment size", optarg); 305 break; 306 case 'g': 307 if ((avgfilesize = atoi(optarg)) <= 0) 308 fatal("%s: bad average file size", optarg); 309 break; 310 case 'h': 311 if ((avgfilesperdir = atoi(optarg)) <= 0) 312 fatal("%s: bad average files per dir", optarg); 313 break; 314 case 'i': 315 if ((density = atoi(optarg)) <= 0) 316 fatal("%s: bad bytes per inode", optarg); 317 break; 318 case 'k': 319 if ((trackskew = atoi(optarg)) < 0) 320 fatal("%s: bad track skew", optarg); 321 break; 322 case 'l': 323 if ((interleave = atoi(optarg)) <= 0) 324 fatal("%s: bad interleave", optarg); 325 break; 326 case 'm': 327 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 328 fatal("%s: bad free space %%", optarg); 329 break; 330 case 'n': 331 if ((nrpos = atoi(optarg)) < 0) 332 fatal("%s: bad rotational layout count", 333 optarg); 334 if (nrpos == 0) 335 nrpos = 1; 336 break; 337 case 'o': 338 if (mfs) 339 getmntopts(optarg, mopts, &mntflags, 0); 340 else { 341 if (strcmp(optarg, "space") == 0) 342 opt = FS_OPTSPACE; 343 else if (strcmp(optarg, "time") == 0) 344 opt = FS_OPTTIME; 345 else 346 fatal("%s: unknown optimization preference: use `space' or `time'", optarg); 347 } 348 break; 349 case 'p': 350 if ((trackspares = atoi(optarg)) < 0) 351 fatal("%s: bad spare sectors per track", 352 optarg); 353 break; 354 case 'r': 355 if ((rpm = atoi(optarg)) <= 0) 356 fatal("%s: bad revolutions/minute", optarg); 357 break; 358 case 's': 359 /* 360 * Unsigned long but limit to long. On 32 bit a 361 * tad under 2G, on 64 bit the upper bound is more 362 * swap space then operand size. 363 * 364 * NOTE: fssize is converted from 512 byte sectors 365 * to filesystem block-sized sectors by mkfs XXX. 366 */ 367 fssize = strtoul(optarg, NULL, 10); 368 if (fssize == 0 || fssize > LONG_MAX) 369 fatal("%s: bad file system size", optarg); 370 break; 371 case 't': 372 t_or_u_flag++; 373 if ((ntracks = atoi(optarg)) < 0) 374 fatal("%s: bad total tracks", optarg); 375 break; 376 case 'u': 377 t_or_u_flag++; 378 if ((nsectors = atoi(optarg)) < 0) 379 fatal("%s: bad sectors/track", optarg); 380 break; 381 case 'v': 382 vflag = 1; 383 break; 384 case 'x': 385 if ((cylspares = atoi(optarg)) < 0) 386 fatal("%s: bad spare sectors per cylinder", 387 optarg); 388 break; 389 case '?': 390 default: 391 usage(); 392 } 393 } 394 argc -= optind; 395 argv += optind; 396 397 if (argc != 2 && (mfs || argc != 1)) 398 usage(); 399 400 special = argv[0]; 401 /* Copy the NetBSD way of faking up a disk label */ 402 if (mfs && !strcmp(special, "swap")) { 403 /* 404 * it's an MFS, mounted on "swap." fake up a label. 405 * XXX XXX XXX 406 */ 407 fso = -1; /* XXX; normally done below. */ 408 409 geom.d_media_blksize = 512; 410 geom.d_nheads = 16; 411 geom.d_secpertrack = 64; 412 /* geom.d_ncylinders not used */ 413 geom.d_secpercyl = 1024; 414 geom.d_media_blocks = 16384; 415 geom.d_rpm = 3600; 416 geom.d_interleave = 1; 417 418 goto havelabel; 419 } 420 421 /* 422 * If we can't stat the device and the path is relative, try 423 * prepending /dev. 424 */ 425 if (stat(special, &st) < 0 && special[0] && special[0] != '/') 426 asprintf(&special, "/dev/%s", special); 427 428 if (Nflag) { 429 fso = -1; 430 } else { 431 fso = open(special, O_WRONLY); 432 if (fso < 0) 433 fatal("%s: %s", special, strerror(errno)); 434 435 /* Bail if target special is mounted */ 436 n = getmntinfo(&mp, MNT_NOWAIT); 437 if (n == 0) 438 fatal("%s: getmntinfo: %s", special, strerror(errno)); 439 440 len = sizeof(_PATH_DEV) - 1; 441 s1 = special; 442 if (strncmp(_PATH_DEV, s1, len) == 0) 443 s1 += len; 444 445 while (--n >= 0) { 446 s2 = mp->f_mntfromname; 447 if (strncmp(_PATH_DEV, s2, len) == 0) { 448 s2 += len - 1; 449 *s2 = 'r'; 450 } 451 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 452 fatal("%s is mounted on %s", 453 special, mp->f_mntonname); 454 ++mp; 455 } 456 } 457 if (mfs && disktype != NULL) { 458 struct disktab *dt; 459 460 if ((dt = getdisktabbyname(disktype)) == NULL) 461 fatal("%s: unknown disk type", disktype); 462 geom = *dt; 463 } else { 464 struct partinfo pinfo; 465 466 if (special[0] == 0) 467 fatal("null special file name"); 468 fsi = open(special, O_RDONLY); 469 if (fsi < 0) 470 fatal("%s: %s", special, strerror(errno)); 471 if (fstat(fsi, &st) < 0) 472 fatal("%s: %s", special, strerror(errno)); 473 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag) 474 printf("%s: %s: not a character-special device\n", 475 progname, special); 476 #ifdef COMPAT 477 if (!mfs && disktype == NULL) 478 disktype = argv[1]; 479 #endif 480 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) { 481 if (!vflag) { 482 fatal("%s: unable to retrieve geometry " 483 "information", argv[0]); 484 } 485 /* 486 * fake up geometry data 487 */ 488 geom.d_media_blksize = 512; 489 geom.d_nheads = 16; 490 geom.d_secpertrack = 64; 491 geom.d_secpercyl = 1024; 492 geom.d_media_blocks = st.st_size / 493 geom.d_media_blksize; 494 geom.d_media_size = geom.d_media_blocks * 495 geom.d_media_blksize; 496 /* geom.d_ncylinders not used */ 497 } else { 498 /* 499 * extract geometry from pinfo 500 */ 501 geom.d_media_blksize = pinfo.media_blksize; 502 geom.d_nheads = pinfo.d_nheads; 503 geom.d_secpertrack = pinfo.d_secpertrack; 504 geom.d_secpercyl = pinfo.d_secpercyl; 505 /* geom.d_ncylinders not used */ 506 geom.d_media_blocks = pinfo.media_blocks; 507 geom.d_media_size = pinfo.media_size; 508 } 509 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) { 510 fatal("%s: is unavailable", argv[0]); 511 } 512 printf("%s: media size %6.2fMB\n", 513 argv[0], geom.d_media_size / 1024.0 / 1024.0); 514 if (geom.d_media_size / 512 >= 0x80000000ULL) 515 fatal("%s: media size is too large for newfs to handle", 516 argv[0]); 517 } 518 havelabel: 519 if (fssize == 0) 520 fssize = geom.d_media_blocks; 521 if ((u_long)fssize > geom.d_media_blocks && !mfs) { 522 fatal("%s: maximum file system size is %" PRIu64 " blocks", 523 argv[0], geom.d_media_blocks); 524 } 525 if (rpm == 0) { 526 rpm = geom.d_rpm; 527 if (rpm <= 0) 528 rpm = 3600; 529 } 530 if (ntracks == 0) { 531 ntracks = geom.d_nheads; 532 if (ntracks <= 0) 533 fatal("%s: no default #tracks", argv[0]); 534 } 535 if (nsectors == 0) { 536 nsectors = geom.d_secpertrack; 537 if (nsectors <= 0) 538 fatal("%s: no default #sectors/track", argv[0]); 539 } 540 if (sectorsize == 0) { 541 sectorsize = geom.d_media_blksize; 542 if (sectorsize <= 0) 543 fatal("%s: no default sector size", argv[0]); 544 } 545 if (trackskew == -1) { 546 trackskew = geom.d_trackskew; 547 if (trackskew < 0) 548 trackskew = 0; 549 } 550 if (interleave == 0) { 551 interleave = geom.d_interleave; 552 if (interleave <= 0) 553 interleave = 1; 554 } 555 if (fsize == 0) 556 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize); 557 if (bsize == 0) 558 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 559 /* 560 * Maxcontig sets the default for the maximum number of blocks 561 * that may be allocated sequentially. With filesystem clustering 562 * it is possible to allocate contiguous blocks up to the maximum 563 * transfer size permitted by the controller or buffering. 564 */ 565 if (maxcontig == 0) 566 maxcontig = MAX(1, MAXPHYS / bsize - 1); 567 if (density == 0) 568 density = NFPI * fsize; 569 if (minfree < MINFREE && opt != FS_OPTSPACE) { 570 fprintf(stderr, "Warning: changing optimization to space "); 571 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE); 572 opt = FS_OPTSPACE; 573 } 574 if (trackspares == -1) 575 trackspares = 0; 576 nphyssectors = nsectors + trackspares; 577 if (cylspares == -1) 578 cylspares = 0; 579 secpercyl = nsectors * ntracks - cylspares; 580 /* 581 * Only complain if -t or -u have been specified; the default 582 * case (4096 sectors per cylinder) is intended to disagree 583 * with the disklabel. 584 */ 585 if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl) 586 fprintf(stderr, "%s (%d) %s (%u)\n", 587 "Warning: calculated sectors per cylinder", secpercyl, 588 "disagrees with disk label", geom.d_secpercyl); 589 if (maxbpg == 0) 590 maxbpg = MAXBLKPG(bsize); 591 headswitch = geom.d_headswitch; 592 trackseek = geom.d_trkseek; 593 realsectorsize = sectorsize; 594 if (sectorsize != DEV_BSIZE) { /* XXX */ 595 int secperblk = sectorsize / DEV_BSIZE; 596 597 sectorsize = DEV_BSIZE; 598 nsectors *= secperblk; 599 nphyssectors *= secperblk; 600 secpercyl *= secperblk; 601 fssize *= secperblk; 602 } 603 if (mfs) { 604 mfs_mtpt = argv[1]; 605 if ( 606 stat(mfs_mtpt, &mfs_mtstat) < 0 || 607 !S_ISDIR(mfs_mtstat.st_mode) 608 ) { 609 fatal("mount point not dir: %s", mfs_mtpt); 610 } 611 } 612 mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL); 613 614 /* 615 * NOTE: Newfs no longer accesses or attempts to update the 616 * filesystem disklabel. 617 * 618 * NOTE: fssize is converted from 512 byte sectors 619 * to filesystem block-sized sectors by mkfs XXX. 620 */ 621 if (!Nflag) 622 close(fso); 623 close(fsi); 624 #ifdef MFS 625 if (mfs) { 626 struct mfs_args args; 627 628 bzero(&args, sizeof(args)); 629 630 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d", 631 getpid()); 632 args.fspec = mfsdevname; 633 args.export.ex_root = -2; 634 if (mntflags & MNT_RDONLY) 635 args.export.ex_flags = MNT_EXRDONLY; 636 else 637 args.export.ex_flags = 0; 638 args.base = membase; 639 args.size = fssize * fsize; 640 641 error = getvfsbyname("mfs", &vfc); 642 if (error && vfsisloadable("mfs")) { 643 if (vfsload("mfs")) 644 fatal("vfsload(mfs)"); 645 endvfsent(); /* flush cache */ 646 error = getvfsbyname("mfs", &vfc); 647 } 648 if (error) 649 fatal("mfs filesystem not available"); 650 651 #if 0 652 int udev; 653 udev = (253 << 8) | (getpid() & 255) | 654 ((getpid() & ~0xFF) << 8); 655 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0) 656 printf("Warning: unable to create %s\n", mfsdevname); 657 #endif 658 signal(SIGINT, mfsintr); 659 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0) 660 fatal("%s: %s", argv[1], strerror(errno)); 661 signal(SIGINT, SIG_DFL); 662 mfsintr(SIGINT); 663 } 664 #endif 665 exit(0); 666 } 667 668 #ifdef MFS 669 670 static void 671 mfsintr(__unused int signo) 672 { 673 if (filename) 674 munmap(membase, fssize * fsize); 675 #if 0 676 remove(mfsdevname); 677 #endif 678 } 679 680 #endif 681 682 /*VARARGS*/ 683 void 684 fatal(const char *fmt, ...) 685 { 686 va_list ap; 687 688 va_start(ap, fmt); 689 if (fcntl(STDERR_FILENO, F_GETFL) < 0) { 690 openlog(progname, LOG_CONS, LOG_DAEMON); 691 vsyslog(LOG_ERR, fmt, ap); 692 closelog(); 693 } else { 694 vwarnx(fmt, ap); 695 } 696 va_end(ap); 697 exit(1); 698 /*NOTREACHED*/ 699 } 700 701 static void 702 usage(void) 703 { 704 if (mfs) { 705 fprintf(stderr, 706 "usage: %s [ -fsoptions ] special-device mount-point\n", 707 progname); 708 } else 709 fprintf(stderr, 710 "usage: %s [ -fsoptions ] special-device%s\n", 711 progname, 712 #ifdef COMPAT 713 " [device-type]"); 714 #else 715 ""); 716 #endif 717 fprintf(stderr, "where fsoptions are:\n"); 718 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n"); 719 fprintf(stderr, "\t-L volume name\n"); 720 fprintf(stderr, 721 "\t-N do not create file system, just print out parameters\n"); 722 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 723 fprintf(stderr, "\t-S sector size\n"); 724 #ifdef COMPAT 725 fprintf(stderr, "\t-T disktype\n"); 726 #endif 727 fprintf(stderr, "\t-U enable soft updates\n"); 728 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 729 fprintf(stderr, "\t-b block size\n"); 730 fprintf(stderr, "\t-c cylinders/group\n"); 731 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 732 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 733 fprintf(stderr, "\t-f frag size\n"); 734 fprintf(stderr, "\t-g average file size\n"); 735 fprintf(stderr, "\t-h average files per directory\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, 748 "\t-v do not attempt to determine partition name from device name\n"); 749 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 750 exit(1); 751 } 752