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, ...) __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 sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0); 436 437 if(errno == ENOENT) { 438 printf("Device:%s does not support the TRIM command\n", 439 special); 440 usage(); 441 } 442 if(!trim_enabled) { 443 printf("Erase device option selected, but sysctl (%s) " 444 "is not enabled\n",sysctl_name); 445 usage(); 446 447 } 448 } 449 if (Nflag) { 450 fso = -1; 451 } else { 452 fso = open(special, O_WRONLY); 453 if (fso < 0) 454 fatal("%s: %s", special, strerror(errno)); 455 456 /* Bail if target special is mounted */ 457 n = getmntinfo(&mp, MNT_NOWAIT); 458 if (n == 0) 459 fatal("%s: getmntinfo: %s", special, strerror(errno)); 460 461 len = sizeof(_PATH_DEV) - 1; 462 s1 = special; 463 if (strncmp(_PATH_DEV, s1, len) == 0) 464 s1 += len; 465 466 while (--n >= 0) { 467 s2 = mp->f_mntfromname; 468 if (strncmp(_PATH_DEV, s2, len) == 0) { 469 s2 += len - 1; 470 *s2 = 'r'; 471 } 472 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 473 fatal("%s is mounted on %s", 474 special, mp->f_mntonname); 475 ++mp; 476 } 477 } 478 if (mfs && disktype != NULL) { 479 struct disktab *dt; 480 481 if ((dt = getdisktabbyname(disktype)) == NULL) 482 fatal("%s: unknown disk type", disktype); 483 geom = *dt; 484 } else { 485 struct partinfo pinfo; 486 487 if (special[0] == 0) 488 fatal("null special file name"); 489 fsi = open(special, O_RDONLY); 490 if (fsi < 0) 491 fatal("%s: %s", special, strerror(errno)); 492 if (fstat(fsi, &st) < 0) 493 fatal("%s: %s", special, strerror(errno)); 494 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag) 495 printf("%s: %s: not a character-special device\n", 496 progname, special); 497 #ifdef COMPAT 498 if (!mfs && disktype == NULL) 499 disktype = argv[1]; 500 #endif 501 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) { 502 if (!vflag) { 503 fatal("%s: unable to retrieve geometry " 504 "information", argv[0]); 505 } 506 /* 507 * fake up geometry data 508 */ 509 geom.d_media_blksize = 512; 510 geom.d_nheads = 16; 511 geom.d_secpertrack = 64; 512 geom.d_secpercyl = 1024; 513 geom.d_media_blocks = st.st_size / 514 geom.d_media_blksize; 515 geom.d_media_size = geom.d_media_blocks * 516 geom.d_media_blksize; 517 /* geom.d_ncylinders not used */ 518 } else { 519 /* 520 * extract geometry from pinfo 521 */ 522 geom.d_media_blksize = pinfo.media_blksize; 523 geom.d_nheads = pinfo.d_nheads; 524 geom.d_secpertrack = pinfo.d_secpertrack; 525 geom.d_secpercyl = pinfo.d_secpercyl; 526 /* geom.d_ncylinders not used */ 527 geom.d_media_blocks = pinfo.media_blocks; 528 geom.d_media_size = pinfo.media_size; 529 slice_offset = pinfo.media_offset; 530 } 531 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) { 532 fatal("%s: is unavailable", argv[0]); 533 } 534 printf("%s: media size %6.2fMB\n", 535 argv[0], geom.d_media_size / 1024.0 / 1024.0); 536 if (geom.d_media_size / 512 >= 0x80000000ULL) 537 fatal("%s: media size is too large for newfs to handle", 538 argv[0]); 539 } 540 havelabel: 541 if (fssize == 0) 542 fssize = geom.d_media_blocks; 543 if ((u_long)fssize > geom.d_media_blocks && !mfs) { 544 fatal("%s: maximum file system size is %" PRIu64 " blocks", 545 argv[0], geom.d_media_blocks); 546 } 547 if (rpm == 0) { 548 rpm = geom.d_rpm; 549 if (rpm <= 0) 550 rpm = 3600; 551 } 552 if (ntracks == 0) { 553 ntracks = geom.d_nheads; 554 if (ntracks <= 0) 555 fatal("%s: no default #tracks", argv[0]); 556 } 557 if (nsectors == 0) { 558 nsectors = geom.d_secpertrack; 559 if (nsectors <= 0) 560 fatal("%s: no default #sectors/track", argv[0]); 561 } 562 if (sectorsize == 0) { 563 sectorsize = geom.d_media_blksize; 564 if (sectorsize <= 0) 565 fatal("%s: no default sector size", argv[0]); 566 } 567 if (trackskew == -1) { 568 trackskew = geom.d_trackskew; 569 if (trackskew < 0) 570 trackskew = 0; 571 } 572 if (interleave == 0) { 573 interleave = geom.d_interleave; 574 if (interleave <= 0) 575 interleave = 1; 576 } 577 if (fsize == 0) 578 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize); 579 if (bsize == 0) 580 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 581 /* 582 * Maxcontig sets the default for the maximum number of blocks 583 * that may be allocated sequentially. With filesystem clustering 584 * it is possible to allocate contiguous blocks up to the maximum 585 * transfer size permitted by the controller or buffering. 586 */ 587 if (maxcontig == 0) 588 maxcontig = MAX(1, MAXPHYS / bsize - 1); 589 if (density == 0) 590 density = NFPI * fsize; 591 if (minfree < MINFREE && opt != FS_OPTSPACE) { 592 fprintf(stderr, "Warning: changing optimization to space "); 593 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE); 594 opt = FS_OPTSPACE; 595 } 596 if (trackspares == -1) 597 trackspares = 0; 598 nphyssectors = nsectors + trackspares; 599 if (cylspares == -1) 600 cylspares = 0; 601 secpercyl = nsectors * ntracks - cylspares; 602 /* 603 * Only complain if -t or -u have been specified; the default 604 * case (4096 sectors per cylinder) is intended to disagree 605 * with the disklabel. 606 */ 607 if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl) 608 fprintf(stderr, "%s (%d) %s (%u)\n", 609 "Warning: calculated sectors per cylinder", secpercyl, 610 "disagrees with disk label", geom.d_secpercyl); 611 if (maxbpg == 0) 612 maxbpg = MAXBLKPG(bsize); 613 headswitch = geom.d_headswitch; 614 trackseek = geom.d_trkseek; 615 realsectorsize = sectorsize; 616 if (sectorsize != DEV_BSIZE) { /* XXX */ 617 int secperblk = sectorsize / DEV_BSIZE; 618 619 sectorsize = DEV_BSIZE; 620 nsectors *= secperblk; 621 nphyssectors *= secperblk; 622 secpercyl *= secperblk; 623 fssize *= secperblk; 624 } 625 if (mfs) { 626 mfs_mtpt = argv[1]; 627 if ( 628 stat(mfs_mtpt, &mfs_mtstat) < 0 || 629 !S_ISDIR(mfs_mtstat.st_mode) 630 ) { 631 fatal("mount point not dir: %s", mfs_mtpt); 632 } 633 } 634 mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL); 635 636 /* 637 * NOTE: Newfs no longer accesses or attempts to update the 638 * filesystem disklabel. 639 * 640 * NOTE: fssize is converted from 512 byte sectors 641 * to filesystem block-sized sectors by mkfs XXX. 642 */ 643 if (!Nflag) 644 close(fso); 645 close(fsi); 646 #ifdef MFS 647 if (mfs) { 648 struct mfs_args args; 649 650 bzero(&args, sizeof(args)); 651 652 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d", 653 getpid()); 654 args.fspec = mfsdevname; 655 args.export.ex_root = -2; 656 if (mntflags & MNT_RDONLY) 657 args.export.ex_flags = MNT_EXRDONLY; 658 else 659 args.export.ex_flags = 0; 660 args.base = membase; 661 args.size = fssize * fsize; 662 663 error = getvfsbyname("mfs", &vfc); 664 if (error && vfsisloadable("mfs")) { 665 if (vfsload("mfs")) 666 fatal("vfsload(mfs)"); 667 endvfsent(); /* flush cache */ 668 error = getvfsbyname("mfs", &vfc); 669 } 670 if (error) 671 fatal("mfs filesystem not available"); 672 673 #if 0 674 int udev; 675 udev = (253 << 8) | (getpid() & 255) | 676 ((getpid() & ~0xFF) << 8); 677 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0) 678 printf("Warning: unable to create %s\n", mfsdevname); 679 #endif 680 signal(SIGINT, mfsintr); 681 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0) 682 fatal("%s: %s", argv[1], strerror(errno)); 683 signal(SIGINT, SIG_DFL); 684 mfsintr(SIGINT); 685 } 686 #endif 687 exit(0); 688 } 689 690 #ifdef MFS 691 692 static void 693 mfsintr(__unused int signo) 694 { 695 if (filename) 696 munmap(membase, fssize * fsize); 697 #if 0 698 remove(mfsdevname); 699 #endif 700 } 701 702 #endif 703 704 /*VARARGS*/ 705 void 706 fatal(const char *fmt, ...) 707 { 708 va_list ap; 709 710 va_start(ap, fmt); 711 if (fcntl(STDERR_FILENO, F_GETFL) < 0) { 712 openlog(progname, LOG_CONS, LOG_DAEMON); 713 vsyslog(LOG_ERR, fmt, ap); 714 closelog(); 715 } else { 716 vwarnx(fmt, ap); 717 } 718 va_end(ap); 719 exit(1); 720 /*NOTREACHED*/ 721 } 722 723 void 724 usage(void) 725 { 726 if (mfs) { 727 fprintf(stderr, 728 "usage: %s [ -fsoptions ] special-device mount-point\n", 729 progname); 730 } else 731 fprintf(stderr, 732 "usage: %s [ -fsoptions ] special-device%s\n", 733 progname, 734 #ifdef COMPAT 735 " [device-type]"); 736 #else 737 ""); 738 #endif 739 fprintf(stderr, "where fsoptions are:\n"); 740 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n"); 741 fprintf(stderr, "\t-E erase file system contents using TRIM\n"); 742 fprintf(stderr, "\t-L volume name\n"); 743 fprintf(stderr, 744 "\t-N do not create file system, just print out parameters\n"); 745 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 746 fprintf(stderr, "\t-S sector size\n"); 747 #ifdef COMPAT 748 fprintf(stderr, "\t-T disktype\n"); 749 #endif 750 fprintf(stderr, "\t-U enable soft updates\n"); 751 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 752 fprintf(stderr, "\t-b block size\n"); 753 fprintf(stderr, "\t-c cylinders/group\n"); 754 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 755 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 756 fprintf(stderr, "\t-f frag size\n"); 757 fprintf(stderr, "\t-g average file size\n"); 758 fprintf(stderr, "\t-h average files per directory\n"); 759 fprintf(stderr, "\t-i number of bytes per inode\n"); 760 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 761 fprintf(stderr, "\t-l hardware sector interleave\n"); 762 fprintf(stderr, "\t-m minimum free space %%\n"); 763 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 764 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 765 fprintf(stderr, "\t-p spare sectors per track\n"); 766 fprintf(stderr, "\t-s file system size (sectors)\n"); 767 fprintf(stderr, "\t-r revolutions/minute\n"); 768 fprintf(stderr, "\t-t tracks/cylinder\n"); 769 fprintf(stderr, "\t-u sectors/track\n"); 770 fprintf(stderr, 771 "\t-v do not attempt to determine partition name from device name\n"); 772 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 773 exit(1); 774 } 775