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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#) Copyright (c) 1983, 1989, 1993, 1994 The Regents of the University of California. All rights reserved. 30 * @(#)newfs.c 8.13 (Berkeley) 5/1/95 31 * $FreeBSD: src/sbin/newfs/newfs.c,v 1.30.2.9 2003/05/13 12:03:55 joerg Exp $ 32 */ 33 34 /* 35 * newfs: friendly front end to mkfs 36 */ 37 #include <sys/param.h> 38 #include <sys/stat.h> 39 #include <sys/diskslice.h> 40 #include <sys/file.h> 41 #include <sys/mount.h> 42 #include <sys/sysctl.h> 43 44 #include <vfs/ufs/dir.h> 45 #include <vfs/ufs/dinode.h> 46 #include <vfs/ufs/fs.h> 47 #include <vfs/ufs/ufsmount.h> 48 49 #include <ctype.h> 50 #include <err.h> 51 #include <errno.h> 52 #include <mntopts.h> 53 #include <inttypes.h> 54 #include <paths.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 #include <syslog.h> 59 #include <unistd.h> 60 #include <disktab.h> 61 62 #ifdef MFS 63 #include <sys/types.h> 64 #include <sys/mman.h> 65 #endif 66 67 #include <stdarg.h> 68 69 #include "defs.h" 70 71 struct mntopt mopts[] = { 72 MOPT_STDOPTS, 73 MOPT_ASYNC, 74 MOPT_NULL, 75 }; 76 77 void fatal(const char *fmt, ...) __dead2 __printflike(1, 2); 78 79 #define COMPAT /* allow non-labeled disks */ 80 81 /* 82 * The following two constants set the default block and fragment sizes. 83 * Both constants must be a power of 2 and meet the following constraints: 84 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 85 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 86 * DESBLKSIZE / DESFRAGSIZE <= 8 87 */ 88 #define DFL_FRAGSIZE 2048 89 #define DFL_BLKSIZE 16384 90 91 /* 92 * Cylinder groups may have up to many cylinders. The actual 93 * number used depends upon how much information can be stored 94 * on a single cylinder. The default is to use as many as possible 95 * cylinders per group. 96 */ 97 #define DESCPG 65536 /* desired fs_cpg ("infinity") */ 98 99 /* 100 * Once upon a time... 101 * ROTDELAY gives the minimum number of milliseconds to initiate 102 * another disk transfer on the same cylinder. It is used in 103 * determining the rotationally optimal layout for disk blocks 104 * within a file; the default of fs_rotdelay is 4ms. 105 * 106 * ...but now we make this 0 to disable the rotdelay delay because 107 * modern drives with read/write-behind achieve higher performance 108 * without the delay. 109 */ 110 #define ROTDELAY 0 111 112 /* 113 * MAXBLKPG determines the maximum number of data blocks which are 114 * placed in a single cylinder group. The default is one indirect 115 * block worth of data blocks. 116 */ 117 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 118 119 /* 120 * Each file system has a number of inodes statically allocated. 121 * We allocate one inode slot per NFPI fragments, expecting this 122 * to be far more than we will ever need. 123 */ 124 #define NFPI 4 125 126 /* 127 * Once upon a time... 128 * For each cylinder we keep track of the availability of blocks at different 129 * rotational positions, so that we can lay out the data to be picked 130 * up with minimum rotational latency. NRPOS is the default number of 131 * rotational positions that we distinguish. With NRPOS of 8 the resolution 132 * of our summary information is 2ms for a typical 3600 rpm drive. 133 * 134 * ...but now we make this 1 (which essentially disables the rotational 135 * position table because modern drives with read-ahead and write-behind do 136 * better without the rotational position table. 137 */ 138 #define NRPOS 1 /* number distinct rotational positions */ 139 140 /* 141 * About the same time as the above, we knew what went where on the disks. 142 * no longer so, so kill the code which finds the different platters too... 143 * We do this by saying one head, with a lot of sectors on it. 144 * The number of sectors are used to determine the size of a cyl-group. 145 * Kirk suggested one or two meg per "cylinder" so we say two. 146 */ 147 #define NTRACKS 1 /* number of heads */ 148 #define NSECTORS 4096 /* number of sectors */ 149 150 int mfs; /* run as the memory based filesystem */ 151 char *mfs_mtpt; /* mount point for mfs */ 152 struct stat mfs_mtstat; /* stat prior to mount */ 153 int Lflag; /* add a volume label */ 154 int Nflag; /* run without writing file system */ 155 int Oflag; /* format as an 4.3BSD file system */ 156 int Cflag; /* copy underlying filesystem (mfs only) */ 157 int Uflag; /* enable soft updates for file system */ 158 int Eflag; /* erase contents using TRIM */ 159 uint64_t slice_offset; /* Pysical device slice offset */ 160 u_long fssize; /* file system size */ 161 int ntracks = NTRACKS; /* # tracks/cylinder */ 162 int nsectors = NSECTORS; /* # sectors/track */ 163 int nphyssectors; /* # sectors/track including spares */ 164 int secpercyl; /* sectors per cylinder */ 165 int trackspares = -1; /* spare sectors per track */ 166 int cylspares = -1; /* spare sectors per cylinder */ 167 int sectorsize; /* bytes/sector */ 168 int realsectorsize; /* bytes/sector in hardware */ 169 int rpm; /* revolutions/minute of drive */ 170 int interleave; /* hardware sector interleave */ 171 int trackskew = -1; /* sector 0 skew, per track */ 172 int headswitch; /* head switch time, usec */ 173 int trackseek; /* track-to-track seek, usec */ 174 int fsize = 0; /* fragment size */ 175 int bsize = 0; /* block size */ 176 int cpg = DESCPG; /* cylinders/cylinder group */ 177 int cpgflg; /* cylinders/cylinder group flag was given */ 178 int minfree = MINFREE; /* free space threshold */ 179 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 180 int density; /* number of bytes per inode */ 181 int maxcontig = 0; /* max contiguous blocks to allocate */ 182 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 183 int maxbpg; /* maximum blocks per file in a cyl group */ 184 int nrpos = NRPOS; /* # of distinguished rotational positions */ 185 int avgfilesize = AVFILESIZ;/* expected average file size */ 186 int avgfilesperdir = AFPDIR;/* expected number of files per directory */ 187 int bbsize = BBSIZE; /* boot block size */ 188 int sbsize = SBSIZE; /* superblock size */ 189 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 190 int t_or_u_flag = 0; /* user has specified -t or -u */ 191 caddr_t membase; /* start address of memory based filesystem */ 192 char *filename; 193 u_char *volumelabel = NULL; /* volume label for filesystem */ 194 #ifdef COMPAT 195 char *disktype; 196 int unlabeled; 197 #endif 198 199 char mfsdevname[256]; 200 char *progname; 201 202 static void usage(void); 203 static void mfsintr(int signo); 204 205 int 206 main(int argc, char **argv) 207 { 208 int ch, i; 209 struct disktab geom; /* disk geometry data */ 210 struct stat st; 211 struct statfs *mp; 212 int fsi = -1, fso = -1, len, n, vflag; 213 char *s1, *s2, *special; 214 const char *opstring; 215 #ifdef MFS 216 struct vfsconf vfc; 217 int error; 218 #endif 219 220 bzero(&geom, sizeof(geom)); 221 vflag = 0; 222 if ((progname = strrchr(*argv, '/'))) 223 ++progname; 224 else 225 progname = *argv; 226 227 if (strstr(progname, "mfs")) { 228 mfs = 1; 229 Nflag++; 230 } 231 232 opstring = mfs ? 233 "L:NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" : 234 "L:NEOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:"; 235 while ((ch = getopt(argc, argv, opstring)) != -1) { 236 switch (ch) { 237 case 'E': 238 Eflag = 1; 239 break; 240 case 'L': 241 volumelabel = optarg; 242 i = -1; 243 while (isalnum(volumelabel[++i])) 244 ; 245 if (volumelabel[i] != '\0') 246 errx(1, "bad volume label. Valid characters are alphanumerics."); 247 if (strlen(volumelabel) >= MAXVOLLEN) 248 errx(1, "bad volume label. Length is longer than %d.", 249 MAXVOLLEN); 250 Lflag = 1; 251 break; 252 case 'N': 253 Nflag = 1; 254 break; 255 case 'O': 256 Oflag = 1; 257 break; 258 case 'C': 259 Cflag = 1; /* MFS only */ 260 break; 261 case 'S': 262 if ((sectorsize = atoi(optarg)) <= 0) 263 fatal("%s: bad sector size", optarg); 264 break; 265 #ifdef COMPAT 266 case 'T': 267 disktype = optarg; 268 break; 269 #endif 270 case 'F': 271 filename = optarg; 272 break; 273 case 'U': 274 Uflag = 1; 275 break; 276 case 'a': 277 if ((maxcontig = atoi(optarg)) <= 0) 278 fatal("%s: bad maximum contiguous blocks", 279 optarg); 280 break; 281 case 'b': 282 if ((bsize = atoi(optarg)) < MINBSIZE) 283 fatal("%s: bad block size", optarg); 284 break; 285 case 'c': 286 if ((cpg = atoi(optarg)) <= 0) 287 fatal("%s: bad cylinders/group", optarg); 288 cpgflg++; 289 break; 290 case 'd': 291 if ((rotdelay = atoi(optarg)) < 0) 292 fatal("%s: bad rotational delay", optarg); 293 break; 294 case 'e': 295 if ((maxbpg = atoi(optarg)) <= 0) 296 fatal("%s: bad blocks per file in a cylinder group", 297 optarg); 298 break; 299 case 'f': 300 if ((fsize = atoi(optarg)) <= 0) 301 fatal("%s: bad fragment size", optarg); 302 break; 303 case 'g': 304 if ((avgfilesize = atoi(optarg)) <= 0) 305 fatal("%s: bad average file size", optarg); 306 break; 307 case 'h': 308 if ((avgfilesperdir = atoi(optarg)) <= 0) 309 fatal("%s: bad average files per dir", optarg); 310 break; 311 case 'i': 312 if ((density = atoi(optarg)) <= 0) 313 fatal("%s: bad bytes per inode", optarg); 314 break; 315 case 'k': 316 if ((trackskew = atoi(optarg)) < 0) 317 fatal("%s: bad track skew", optarg); 318 break; 319 case 'l': 320 if ((interleave = atoi(optarg)) <= 0) 321 fatal("%s: bad interleave", optarg); 322 break; 323 case 'm': 324 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 325 fatal("%s: bad free space %%", optarg); 326 break; 327 case 'n': 328 if ((nrpos = atoi(optarg)) < 0) 329 fatal("%s: bad rotational layout count", 330 optarg); 331 if (nrpos == 0) 332 nrpos = 1; 333 break; 334 case 'o': 335 if (mfs) 336 getmntopts(optarg, mopts, &mntflags, 0); 337 else { 338 if (strcmp(optarg, "space") == 0) 339 opt = FS_OPTSPACE; 340 else if (strcmp(optarg, "time") == 0) 341 opt = FS_OPTTIME; 342 else 343 fatal("%s: unknown optimization preference: use `space' or `time'", optarg); 344 } 345 break; 346 case 'p': 347 if ((trackspares = atoi(optarg)) < 0) 348 fatal("%s: bad spare sectors per track", 349 optarg); 350 break; 351 case 'r': 352 if ((rpm = atoi(optarg)) <= 0) 353 fatal("%s: bad revolutions/minute", optarg); 354 break; 355 case 's': 356 /* 357 * Unsigned long but limit to long. On 32 bit a 358 * tad under 2G, on 64 bit the upper bound is more 359 * swap space then operand size. 360 * 361 * NOTE: fssize is converted from 512 byte sectors 362 * to filesystem block-sized sectors by mkfs XXX. 363 */ 364 fssize = strtoul(optarg, NULL, 10); 365 if (fssize == 0 || fssize > LONG_MAX) 366 fatal("%s: bad file system size", optarg); 367 break; 368 case 't': 369 t_or_u_flag++; 370 if ((ntracks = atoi(optarg)) < 0) 371 fatal("%s: bad total tracks", optarg); 372 break; 373 case 'u': 374 t_or_u_flag++; 375 if ((nsectors = atoi(optarg)) < 0) 376 fatal("%s: bad sectors/track", optarg); 377 break; 378 case 'v': 379 vflag = 1; 380 break; 381 case 'x': 382 if ((cylspares = atoi(optarg)) < 0) 383 fatal("%s: bad spare sectors per cylinder", 384 optarg); 385 break; 386 case '?': 387 default: 388 usage(); 389 } 390 } 391 argc -= optind; 392 argv += optind; 393 394 if (argc != 2 && (mfs || argc != 1)) 395 usage(); 396 397 special = argv[0]; 398 /* Copy the NetBSD way of faking up a disk label */ 399 if (mfs && !strcmp(special, "swap")) { 400 /* 401 * it's an MFS, mounted on "swap." fake up a label. 402 * XXX XXX XXX 403 */ 404 fso = -1; /* XXX; normally done below. */ 405 406 geom.d_media_blksize = 512; 407 geom.d_nheads = 16; 408 geom.d_secpertrack = 64; 409 /* geom.d_ncylinders not used */ 410 geom.d_secpercyl = 1024; 411 geom.d_media_blocks = 16384; 412 geom.d_rpm = 3600; 413 geom.d_interleave = 1; 414 415 goto havelabel; 416 } 417 418 /* 419 * If we can't stat the device and the path is relative, try 420 * prepending /dev. 421 */ 422 if (stat(special, &st) < 0 && special[0] && special[0] != '/') 423 asprintf(&special, "/dev/%s", special); 424 425 if (Eflag) { 426 char sysctl_name[64]; 427 int trim_enabled = 0; 428 size_t olen = sizeof(trim_enabled); 429 char *dev_name = strdup(special); 430 431 dev_name = strtok(dev_name + strlen("/dev/da"),"s"); 432 sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled", 433 dev_name); 434 435 if (sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0) < 0) { 436 printf("Device:%s does not support the TRIM command\n", 437 special); 438 usage(); 439 } 440 if(!trim_enabled) { 441 printf("Erase device option selected, but sysctl (%s) " 442 "is not enabled\n",sysctl_name); 443 usage(); 444 445 } 446 } 447 if (Nflag) { 448 fso = -1; 449 } else { 450 fso = open(special, O_WRONLY); 451 if (fso < 0) 452 fatal("%s: %s", special, strerror(errno)); 453 454 /* Bail if target special is mounted */ 455 n = getmntinfo(&mp, MNT_NOWAIT); 456 if (n == 0) 457 fatal("%s: getmntinfo: %s", special, strerror(errno)); 458 459 len = sizeof(_PATH_DEV) - 1; 460 s1 = special; 461 if (strncmp(_PATH_DEV, s1, len) == 0) 462 s1 += len; 463 464 while (--n >= 0) { 465 s2 = mp->f_mntfromname; 466 if (strncmp(_PATH_DEV, s2, len) == 0) { 467 s2 += len - 1; 468 *s2 = 'r'; 469 } 470 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 471 fatal("%s is mounted on %s", 472 special, mp->f_mntonname); 473 ++mp; 474 } 475 } 476 if (mfs && disktype != NULL) { 477 struct disktab *dt; 478 479 if ((dt = getdisktabbyname(disktype)) == NULL) 480 fatal("%s: unknown disk type", disktype); 481 geom = *dt; 482 } else { 483 struct partinfo pinfo; 484 485 if (special[0] == 0) 486 fatal("null special file name"); 487 fsi = open(special, O_RDONLY); 488 if (fsi < 0) 489 fatal("%s: %s", special, strerror(errno)); 490 if (fstat(fsi, &st) < 0) 491 fatal("%s: %s", special, strerror(errno)); 492 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag) 493 printf("%s: %s: not a character-special device\n", 494 progname, special); 495 #ifdef COMPAT 496 if (!mfs && disktype == NULL) 497 disktype = argv[1]; 498 #endif 499 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) { 500 if (!vflag) { 501 fatal("%s: unable to retrieve geometry " 502 "information", argv[0]); 503 } 504 /* 505 * fake up geometry data 506 */ 507 geom.d_media_blksize = 512; 508 geom.d_nheads = 16; 509 geom.d_secpertrack = 64; 510 geom.d_secpercyl = 1024; 511 geom.d_media_blocks = st.st_size / 512 geom.d_media_blksize; 513 geom.d_media_size = geom.d_media_blocks * 514 geom.d_media_blksize; 515 /* geom.d_ncylinders not used */ 516 } else { 517 /* 518 * extract geometry from pinfo 519 */ 520 geom.d_media_blksize = pinfo.media_blksize; 521 geom.d_nheads = pinfo.d_nheads; 522 geom.d_secpertrack = pinfo.d_secpertrack; 523 geom.d_secpercyl = pinfo.d_secpercyl; 524 /* geom.d_ncylinders not used */ 525 geom.d_media_blocks = pinfo.media_blocks; 526 geom.d_media_size = pinfo.media_size; 527 slice_offset = pinfo.media_offset; 528 } 529 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) { 530 fatal("%s: is unavailable", argv[0]); 531 } 532 printf("%s: media size %6.2fMB\n", 533 argv[0], geom.d_media_size / 1024.0 / 1024.0); 534 if (geom.d_media_size / 512 >= 0x80000000ULL) 535 fatal("%s: media size is too large for newfs to handle", 536 argv[0]); 537 } 538 havelabel: 539 if (fssize == 0) 540 fssize = geom.d_media_blocks; 541 if ((u_long)fssize > geom.d_media_blocks && !mfs) { 542 fatal("%s: maximum file system size is %" PRIu64 " blocks", 543 argv[0], geom.d_media_blocks); 544 } 545 if (rpm == 0) { 546 rpm = geom.d_rpm; 547 if (rpm <= 0) 548 rpm = 3600; 549 } 550 if (ntracks == 0) { 551 ntracks = geom.d_nheads; 552 if (ntracks <= 0) 553 fatal("%s: no default #tracks", argv[0]); 554 } 555 if (nsectors == 0) { 556 nsectors = geom.d_secpertrack; 557 if (nsectors <= 0) 558 fatal("%s: no default #sectors/track", argv[0]); 559 } 560 if (sectorsize == 0) { 561 sectorsize = geom.d_media_blksize; 562 if (sectorsize <= 0) 563 fatal("%s: no default sector size", argv[0]); 564 } 565 if (trackskew == -1) { 566 trackskew = geom.d_trackskew; 567 if (trackskew < 0) 568 trackskew = 0; 569 } 570 if (interleave == 0) { 571 interleave = geom.d_interleave; 572 if (interleave <= 0) 573 interleave = 1; 574 } 575 if (fsize == 0) 576 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize); 577 if (bsize == 0) 578 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 579 /* 580 * Maxcontig sets the default for the maximum number of blocks 581 * that may be allocated sequentially. With filesystem clustering 582 * it is possible to allocate contiguous blocks up to the maximum 583 * transfer size permitted by the controller or buffering. 584 */ 585 if (maxcontig == 0) 586 maxcontig = MAX(1, MAXPHYS / bsize - 1); 587 if (density == 0) 588 density = NFPI * fsize; 589 if (minfree < MINFREE && opt != FS_OPTSPACE) { 590 fprintf(stderr, "Warning: changing optimization to space "); 591 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE); 592 opt = FS_OPTSPACE; 593 } 594 if (trackspares == -1) 595 trackspares = 0; 596 nphyssectors = nsectors + trackspares; 597 if (cylspares == -1) 598 cylspares = 0; 599 secpercyl = nsectors * ntracks - cylspares; 600 /* 601 * Only complain if -t or -u have been specified; the default 602 * case (4096 sectors per cylinder) is intended to disagree 603 * with the disklabel. 604 */ 605 if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl) 606 fprintf(stderr, "%s (%d) %s (%u)\n", 607 "Warning: calculated sectors per cylinder", secpercyl, 608 "disagrees with disk label", geom.d_secpercyl); 609 if (maxbpg == 0) 610 maxbpg = MAXBLKPG(bsize); 611 headswitch = geom.d_headswitch; 612 trackseek = geom.d_trkseek; 613 realsectorsize = sectorsize; 614 if (sectorsize != DEV_BSIZE) { /* XXX */ 615 int secperblk = sectorsize / DEV_BSIZE; 616 617 sectorsize = DEV_BSIZE; 618 nsectors *= secperblk; 619 nphyssectors *= secperblk; 620 secpercyl *= secperblk; 621 fssize *= secperblk; 622 } 623 if (mfs) { 624 mfs_mtpt = argv[1]; 625 if ( 626 stat(mfs_mtpt, &mfs_mtstat) < 0 || 627 !S_ISDIR(mfs_mtstat.st_mode) 628 ) { 629 fatal("mount point not dir: %s", mfs_mtpt); 630 } 631 } 632 mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL); 633 634 /* 635 * NOTE: Newfs no longer accesses or attempts to update the 636 * filesystem disklabel. 637 * 638 * NOTE: fssize is converted from 512 byte sectors 639 * to filesystem block-sized sectors by mkfs XXX. 640 */ 641 if (!Nflag) 642 close(fso); 643 close(fsi); 644 #ifdef MFS 645 if (mfs) { 646 struct mfs_args args; 647 648 bzero(&args, sizeof(args)); 649 650 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d", 651 getpid()); 652 args.fspec = mfsdevname; 653 args.export.ex_root = -2; 654 if (mntflags & MNT_RDONLY) 655 args.export.ex_flags = MNT_EXRDONLY; 656 else 657 args.export.ex_flags = 0; 658 args.base = membase; 659 args.size = fssize * fsize; 660 661 error = getvfsbyname("mfs", &vfc); 662 if (error && vfsisloadable("mfs")) { 663 if (vfsload("mfs")) 664 fatal("vfsload(mfs)"); 665 endvfsent(); /* flush cache */ 666 error = getvfsbyname("mfs", &vfc); 667 } 668 if (error) 669 fatal("mfs filesystem not available"); 670 671 #if 0 672 int udev; 673 udev = (253 << 8) | (getpid() & 255) | 674 ((getpid() & ~0xFF) << 8); 675 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0) 676 printf("Warning: unable to create %s\n", mfsdevname); 677 #endif 678 signal(SIGINT, mfsintr); 679 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0) 680 fatal("%s: %s", argv[1], strerror(errno)); 681 signal(SIGINT, SIG_DFL); 682 mfsintr(SIGINT); 683 } 684 #endif 685 exit(0); 686 } 687 688 #ifdef MFS 689 690 static void 691 mfsintr(__unused int signo) 692 { 693 if (filename) 694 munmap(membase, fssize * fsize); 695 #if 0 696 remove(mfsdevname); 697 #endif 698 } 699 700 #endif 701 702 /*VARARGS*/ 703 void 704 fatal(const char *fmt, ...) 705 { 706 va_list ap; 707 708 va_start(ap, fmt); 709 if (fcntl(STDERR_FILENO, F_GETFL) < 0) { 710 openlog(progname, LOG_CONS, LOG_DAEMON); 711 vsyslog(LOG_ERR, fmt, ap); 712 closelog(); 713 } else { 714 vwarnx(fmt, ap); 715 } 716 va_end(ap); 717 exit(1); 718 /*NOTREACHED*/ 719 } 720 721 void 722 usage(void) 723 { 724 if (mfs) { 725 fprintf(stderr, 726 "usage: %s [ -fsoptions ] special-device mount-point\n", 727 progname); 728 } else 729 fprintf(stderr, 730 "usage: %s [ -fsoptions ] special-device%s\n", 731 progname, 732 #ifdef COMPAT 733 " [device-type]"); 734 #else 735 ""); 736 #endif 737 fprintf(stderr, "where fsoptions are:\n"); 738 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n"); 739 fprintf(stderr, "\t-E erase file system contents using TRIM\n"); 740 fprintf(stderr, "\t-L volume name\n"); 741 fprintf(stderr, 742 "\t-N do not create file system, just print out parameters\n"); 743 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 744 fprintf(stderr, "\t-S sector size\n"); 745 #ifdef COMPAT 746 fprintf(stderr, "\t-T disktype\n"); 747 #endif 748 fprintf(stderr, "\t-U enable soft updates\n"); 749 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 750 fprintf(stderr, "\t-b block size\n"); 751 fprintf(stderr, "\t-c cylinders/group\n"); 752 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 753 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 754 fprintf(stderr, "\t-f frag size\n"); 755 fprintf(stderr, "\t-g average file size\n"); 756 fprintf(stderr, "\t-h average files per directory\n"); 757 fprintf(stderr, "\t-i number of bytes per inode\n"); 758 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 759 fprintf(stderr, "\t-l hardware sector interleave\n"); 760 fprintf(stderr, "\t-m minimum free space %%\n"); 761 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 762 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 763 fprintf(stderr, "\t-p spare sectors per track\n"); 764 fprintf(stderr, "\t-s file system size (sectors)\n"); 765 fprintf(stderr, "\t-r revolutions/minute\n"); 766 fprintf(stderr, "\t-t tracks/cylinder\n"); 767 fprintf(stderr, "\t-u sectors/track\n"); 768 fprintf(stderr, 769 "\t-v do not attempt to determine partition name from device name\n"); 770 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 771 exit(1); 772 } 773