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 */ 37 38 /* 39 * newfs: friendly front end to mkfs 40 */ 41 #include <sys/param.h> 42 #include <sys/stat.h> 43 #include <sys/diskslice.h> 44 #include <sys/file.h> 45 #include <sys/mount.h> 46 #include <sys/sysctl.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 <mntopts.h> 57 #include <inttypes.h> 58 #include <paths.h> 59 #include <stdio.h> 60 #include <stdlib.h> 61 #include <string.h> 62 #include <syslog.h> 63 #include <unistd.h> 64 #include <disktab.h> 65 66 #ifdef MFS 67 #include <sys/types.h> 68 #include <sys/mman.h> 69 #endif 70 71 #include <stdarg.h> 72 73 #include "defs.h" 74 75 struct mntopt mopts[] = { 76 MOPT_STDOPTS, 77 MOPT_ASYNC, 78 MOPT_NULL, 79 }; 80 81 void fatal(const char *fmt, ...) __printflike(1, 2); 82 83 #define COMPAT /* allow non-labeled disks */ 84 85 /* 86 * The following two constants set the default block and fragment sizes. 87 * Both constants must be a power of 2 and meet the following constraints: 88 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 89 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 90 * DESBLKSIZE / DESFRAGSIZE <= 8 91 */ 92 #define DFL_FRAGSIZE 2048 93 #define DFL_BLKSIZE 16384 94 95 /* 96 * Cylinder groups may have up to many cylinders. The actual 97 * number used depends upon how much information can be stored 98 * on a single cylinder. The default is to use as many as possible 99 * cylinders per group. 100 */ 101 #define DESCPG 65536 /* desired fs_cpg ("infinity") */ 102 103 /* 104 * Once upon a time... 105 * ROTDELAY gives the minimum number of milliseconds to initiate 106 * another disk transfer on the same cylinder. It is used in 107 * determining the rotationally optimal layout for disk blocks 108 * within a file; the default of fs_rotdelay is 4ms. 109 * 110 * ...but now we make this 0 to disable the rotdelay delay because 111 * modern drives with read/write-behind achieve higher performance 112 * without the delay. 113 */ 114 #define ROTDELAY 0 115 116 /* 117 * MAXBLKPG determines the maximum number of data blocks which are 118 * placed in a single cylinder group. The default is one indirect 119 * block worth of data blocks. 120 */ 121 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 122 123 /* 124 * Each file system has a number of inodes statically allocated. 125 * We allocate one inode slot per NFPI fragments, expecting this 126 * to be far more than we will ever need. 127 */ 128 #define NFPI 4 129 130 /* 131 * Once upon a time... 132 * For each cylinder we keep track of the availability of blocks at different 133 * rotational positions, so that we can lay out the data to be picked 134 * up with minimum rotational latency. NRPOS is the default number of 135 * rotational positions that we distinguish. With NRPOS of 8 the resolution 136 * of our summary information is 2ms for a typical 3600 rpm drive. 137 * 138 * ...but now we make this 1 (which essentially disables the rotational 139 * position table because modern drives with read-ahead and write-behind do 140 * better without the rotational position table. 141 */ 142 #define NRPOS 1 /* number distinct rotational positions */ 143 144 /* 145 * About the same time as the above, we knew what went where on the disks. 146 * no longer so, so kill the code which finds the different platters too... 147 * We do this by saying one head, with a lot of sectors on it. 148 * The number of sectors are used to determine the size of a cyl-group. 149 * Kirk suggested one or two meg per "cylinder" so we say two. 150 */ 151 #define NTRACKS 1 /* number of heads */ 152 #define NSECTORS 4096 /* number of sectors */ 153 154 int mfs; /* run as the memory based filesystem */ 155 char *mfs_mtpt; /* mount point for mfs */ 156 struct stat mfs_mtstat; /* stat prior to mount */ 157 int Lflag; /* add a volume label */ 158 int Nflag; /* run without writing file system */ 159 int Oflag; /* format as an 4.3BSD file system */ 160 int Cflag; /* copy underlying filesystem (mfs only) */ 161 int Uflag; /* enable soft updates for file system */ 162 int Eflag; /* erase contents using TRIM */ 163 uint64_t slice_offset; /* Pysical device slice offset */ 164 u_long fssize; /* file system size */ 165 int ntracks = NTRACKS; /* # tracks/cylinder */ 166 int nsectors = NSECTORS; /* # sectors/track */ 167 int nphyssectors; /* # sectors/track including spares */ 168 int secpercyl; /* sectors per cylinder */ 169 int trackspares = -1; /* spare sectors per track */ 170 int cylspares = -1; /* spare sectors per cylinder */ 171 int sectorsize; /* bytes/sector */ 172 int realsectorsize; /* bytes/sector in hardware */ 173 int rpm; /* revolutions/minute of drive */ 174 int interleave; /* hardware sector interleave */ 175 int trackskew = -1; /* sector 0 skew, per track */ 176 int headswitch; /* head switch time, usec */ 177 int trackseek; /* track-to-track seek, usec */ 178 int fsize = 0; /* fragment size */ 179 int bsize = 0; /* block size */ 180 int cpg = DESCPG; /* cylinders/cylinder group */ 181 int cpgflg; /* cylinders/cylinder group flag was given */ 182 int minfree = MINFREE; /* free space threshold */ 183 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 184 int density; /* number of bytes per inode */ 185 int maxcontig = 0; /* max contiguous blocks to allocate */ 186 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 187 int maxbpg; /* maximum blocks per file in a cyl group */ 188 int nrpos = NRPOS; /* # of distinguished rotational positions */ 189 int avgfilesize = AVFILESIZ;/* expected average file size */ 190 int avgfilesperdir = AFPDIR;/* expected number of files per directory */ 191 int bbsize = BBSIZE; /* boot block size */ 192 int sbsize = SBSIZE; /* superblock size */ 193 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 194 int t_or_u_flag = 0; /* user has specified -t or -u */ 195 caddr_t membase; /* start address of memory based filesystem */ 196 char *filename; 197 u_char *volumelabel = NULL; /* volume label for filesystem */ 198 #ifdef COMPAT 199 char *disktype; 200 int unlabeled; 201 #endif 202 203 char mfsdevname[256]; 204 char *progname; 205 206 static void usage(void); 207 static void mfsintr(int signo); 208 209 int 210 main(int argc, char **argv) 211 { 212 int ch, i; 213 struct disktab geom; /* disk geometry data */ 214 struct stat st; 215 struct statfs *mp; 216 int fsi = -1, fso = -1, len, n, vflag; 217 char *s1, *s2, *special; 218 const char *opstring; 219 #ifdef MFS 220 struct vfsconf vfc; 221 int error; 222 #endif 223 224 bzero(&geom, sizeof(geom)); 225 vflag = 0; 226 if ((progname = strrchr(*argv, '/'))) 227 ++progname; 228 else 229 progname = *argv; 230 231 if (strstr(progname, "mfs")) { 232 mfs = 1; 233 Nflag++; 234 } 235 236 opstring = mfs ? 237 "L:NCF:T:Ua:b:c:d:e:f:g:h:i:m:o:s:v" : 238 "L:NEOS:T:Ua:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:vx:"; 239 while ((ch = getopt(argc, argv, opstring)) != -1) { 240 switch (ch) { 241 case 'E': 242 Eflag = 1; 243 break; 244 case 'L': 245 volumelabel = optarg; 246 i = -1; 247 while (isalnum(volumelabel[++i])) 248 ; 249 if (volumelabel[i] != '\0') 250 errx(1, "bad volume label. Valid characters are alphanumerics."); 251 if (strlen(volumelabel) >= MAXVOLLEN) 252 errx(1, "bad volume label. Length is longer than %d.", 253 MAXVOLLEN); 254 Lflag = 1; 255 break; 256 case 'N': 257 Nflag = 1; 258 break; 259 case 'O': 260 Oflag = 1; 261 break; 262 case 'C': 263 Cflag = 1; /* MFS only */ 264 break; 265 case 'S': 266 if ((sectorsize = atoi(optarg)) <= 0) 267 fatal("%s: bad sector size", optarg); 268 break; 269 #ifdef COMPAT 270 case 'T': 271 disktype = optarg; 272 break; 273 #endif 274 case 'F': 275 filename = optarg; 276 break; 277 case 'U': 278 Uflag = 1; 279 break; 280 case 'a': 281 if ((maxcontig = atoi(optarg)) <= 0) 282 fatal("%s: bad maximum contiguous blocks", 283 optarg); 284 break; 285 case 'b': 286 if ((bsize = atoi(optarg)) < MINBSIZE) 287 fatal("%s: bad block size", optarg); 288 break; 289 case 'c': 290 if ((cpg = atoi(optarg)) <= 0) 291 fatal("%s: bad cylinders/group", optarg); 292 cpgflg++; 293 break; 294 case 'd': 295 if ((rotdelay = atoi(optarg)) < 0) 296 fatal("%s: bad rotational delay", optarg); 297 break; 298 case 'e': 299 if ((maxbpg = atoi(optarg)) <= 0) 300 fatal("%s: bad blocks per file in a cylinder group", 301 optarg); 302 break; 303 case 'f': 304 if ((fsize = atoi(optarg)) <= 0) 305 fatal("%s: bad fragment size", optarg); 306 break; 307 case 'g': 308 if ((avgfilesize = atoi(optarg)) <= 0) 309 fatal("%s: bad average file size", optarg); 310 break; 311 case 'h': 312 if ((avgfilesperdir = atoi(optarg)) <= 0) 313 fatal("%s: bad average files per dir", optarg); 314 break; 315 case 'i': 316 if ((density = atoi(optarg)) <= 0) 317 fatal("%s: bad bytes per inode", optarg); 318 break; 319 case 'k': 320 if ((trackskew = atoi(optarg)) < 0) 321 fatal("%s: bad track skew", optarg); 322 break; 323 case 'l': 324 if ((interleave = atoi(optarg)) <= 0) 325 fatal("%s: bad interleave", optarg); 326 break; 327 case 'm': 328 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 329 fatal("%s: bad free space %%", optarg); 330 break; 331 case 'n': 332 if ((nrpos = atoi(optarg)) < 0) 333 fatal("%s: bad rotational layout count", 334 optarg); 335 if (nrpos == 0) 336 nrpos = 1; 337 break; 338 case 'o': 339 if (mfs) 340 getmntopts(optarg, mopts, &mntflags, 0); 341 else { 342 if (strcmp(optarg, "space") == 0) 343 opt = FS_OPTSPACE; 344 else if (strcmp(optarg, "time") == 0) 345 opt = FS_OPTTIME; 346 else 347 fatal("%s: unknown optimization preference: use `space' or `time'", optarg); 348 } 349 break; 350 case 'p': 351 if ((trackspares = atoi(optarg)) < 0) 352 fatal("%s: bad spare sectors per track", 353 optarg); 354 break; 355 case 'r': 356 if ((rpm = atoi(optarg)) <= 0) 357 fatal("%s: bad revolutions/minute", optarg); 358 break; 359 case 's': 360 /* 361 * Unsigned long but limit to long. On 32 bit a 362 * tad under 2G, on 64 bit the upper bound is more 363 * swap space then operand size. 364 * 365 * NOTE: fssize is converted from 512 byte sectors 366 * to filesystem block-sized sectors by mkfs XXX. 367 */ 368 fssize = strtoul(optarg, NULL, 10); 369 if (fssize == 0 || fssize > LONG_MAX) 370 fatal("%s: bad file system size", optarg); 371 break; 372 case 't': 373 t_or_u_flag++; 374 if ((ntracks = atoi(optarg)) < 0) 375 fatal("%s: bad total tracks", optarg); 376 break; 377 case 'u': 378 t_or_u_flag++; 379 if ((nsectors = atoi(optarg)) < 0) 380 fatal("%s: bad sectors/track", optarg); 381 break; 382 case 'v': 383 vflag = 1; 384 break; 385 case 'x': 386 if ((cylspares = atoi(optarg)) < 0) 387 fatal("%s: bad spare sectors per cylinder", 388 optarg); 389 break; 390 case '?': 391 default: 392 usage(); 393 } 394 } 395 argc -= optind; 396 argv += optind; 397 398 if (argc != 2 && (mfs || argc != 1)) 399 usage(); 400 401 special = argv[0]; 402 /* Copy the NetBSD way of faking up a disk label */ 403 if (mfs && !strcmp(special, "swap")) { 404 /* 405 * it's an MFS, mounted on "swap." fake up a label. 406 * XXX XXX XXX 407 */ 408 fso = -1; /* XXX; normally done below. */ 409 410 geom.d_media_blksize = 512; 411 geom.d_nheads = 16; 412 geom.d_secpertrack = 64; 413 /* geom.d_ncylinders not used */ 414 geom.d_secpercyl = 1024; 415 geom.d_media_blocks = 16384; 416 geom.d_rpm = 3600; 417 geom.d_interleave = 1; 418 419 goto havelabel; 420 } 421 422 /* 423 * If we can't stat the device and the path is relative, try 424 * prepending /dev. 425 */ 426 if (stat(special, &st) < 0 && special[0] && special[0] != '/') 427 asprintf(&special, "/dev/%s", special); 428 429 if (Eflag) { 430 char sysctl_name[64]; 431 int trim_enabled = 0; 432 size_t olen = sizeof(trim_enabled); 433 char *dev_name = strdup(special); 434 435 dev_name = strtok(dev_name + strlen("/dev/da"),"s"); 436 sprintf(sysctl_name, "kern.cam.da.%s.trim_enabled", 437 dev_name); 438 439 sysctlbyname(sysctl_name, &trim_enabled, &olen, NULL, 0); 440 441 if(errno == ENOENT) { 442 printf("Device:%s does not support the TRIM command\n", 443 special); 444 usage(); 445 } 446 if(!trim_enabled) { 447 printf("Erase device option selected, but sysctl (%s) " 448 "is not enabled\n",sysctl_name); 449 usage(); 450 451 } 452 } 453 if (Nflag) { 454 fso = -1; 455 } else { 456 fso = open(special, O_WRONLY); 457 if (fso < 0) 458 fatal("%s: %s", special, strerror(errno)); 459 460 /* Bail if target special is mounted */ 461 n = getmntinfo(&mp, MNT_NOWAIT); 462 if (n == 0) 463 fatal("%s: getmntinfo: %s", special, strerror(errno)); 464 465 len = sizeof(_PATH_DEV) - 1; 466 s1 = special; 467 if (strncmp(_PATH_DEV, s1, len) == 0) 468 s1 += len; 469 470 while (--n >= 0) { 471 s2 = mp->f_mntfromname; 472 if (strncmp(_PATH_DEV, s2, len) == 0) { 473 s2 += len - 1; 474 *s2 = 'r'; 475 } 476 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 477 fatal("%s is mounted on %s", 478 special, mp->f_mntonname); 479 ++mp; 480 } 481 } 482 if (mfs && disktype != NULL) { 483 struct disktab *dt; 484 485 if ((dt = getdisktabbyname(disktype)) == NULL) 486 fatal("%s: unknown disk type", disktype); 487 geom = *dt; 488 } else { 489 struct partinfo pinfo; 490 491 if (special[0] == 0) 492 fatal("null special file name"); 493 fsi = open(special, O_RDONLY); 494 if (fsi < 0) 495 fatal("%s: %s", special, strerror(errno)); 496 if (fstat(fsi, &st) < 0) 497 fatal("%s: %s", special, strerror(errno)); 498 if ((st.st_mode & S_IFMT) != S_IFCHR && !mfs && !vflag) 499 printf("%s: %s: not a character-special device\n", 500 progname, special); 501 #ifdef COMPAT 502 if (!mfs && disktype == NULL) 503 disktype = argv[1]; 504 #endif 505 if (ioctl(fsi, DIOCGPART, &pinfo) < 0) { 506 if (!vflag) { 507 fatal("%s: unable to retrieve geometry " 508 "information", argv[0]); 509 } 510 /* 511 * fake up geometry data 512 */ 513 geom.d_media_blksize = 512; 514 geom.d_nheads = 16; 515 geom.d_secpertrack = 64; 516 geom.d_secpercyl = 1024; 517 geom.d_media_blocks = st.st_size / 518 geom.d_media_blksize; 519 geom.d_media_size = geom.d_media_blocks * 520 geom.d_media_blksize; 521 /* geom.d_ncylinders not used */ 522 } else { 523 /* 524 * extract geometry from pinfo 525 */ 526 geom.d_media_blksize = pinfo.media_blksize; 527 geom.d_nheads = pinfo.d_nheads; 528 geom.d_secpertrack = pinfo.d_secpertrack; 529 geom.d_secpercyl = pinfo.d_secpercyl; 530 /* geom.d_ncylinders not used */ 531 geom.d_media_blocks = pinfo.media_blocks; 532 geom.d_media_size = pinfo.media_size; 533 slice_offset = pinfo.media_offset; 534 } 535 if (geom.d_media_blocks == 0 || geom.d_media_size == 0) { 536 fatal("%s: is unavailable", argv[0]); 537 } 538 printf("%s: media size %6.2fMB\n", 539 argv[0], geom.d_media_size / 1024.0 / 1024.0); 540 if (geom.d_media_size / 512 >= 0x80000000ULL) 541 fatal("%s: media size is too large for newfs to handle", 542 argv[0]); 543 } 544 havelabel: 545 if (fssize == 0) 546 fssize = geom.d_media_blocks; 547 if ((u_long)fssize > geom.d_media_blocks && !mfs) { 548 fatal("%s: maximum file system size is %" PRIu64 " blocks", 549 argv[0], geom.d_media_blocks); 550 } 551 if (rpm == 0) { 552 rpm = geom.d_rpm; 553 if (rpm <= 0) 554 rpm = 3600; 555 } 556 if (ntracks == 0) { 557 ntracks = geom.d_nheads; 558 if (ntracks <= 0) 559 fatal("%s: no default #tracks", argv[0]); 560 } 561 if (nsectors == 0) { 562 nsectors = geom.d_secpertrack; 563 if (nsectors <= 0) 564 fatal("%s: no default #sectors/track", argv[0]); 565 } 566 if (sectorsize == 0) { 567 sectorsize = geom.d_media_blksize; 568 if (sectorsize <= 0) 569 fatal("%s: no default sector size", argv[0]); 570 } 571 if (trackskew == -1) { 572 trackskew = geom.d_trackskew; 573 if (trackskew < 0) 574 trackskew = 0; 575 } 576 if (interleave == 0) { 577 interleave = geom.d_interleave; 578 if (interleave <= 0) 579 interleave = 1; 580 } 581 if (fsize == 0) 582 fsize = MAX(DFL_FRAGSIZE, geom.d_media_blksize); 583 if (bsize == 0) 584 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 585 /* 586 * Maxcontig sets the default for the maximum number of blocks 587 * that may be allocated sequentially. With filesystem clustering 588 * it is possible to allocate contiguous blocks up to the maximum 589 * transfer size permitted by the controller or buffering. 590 */ 591 if (maxcontig == 0) 592 maxcontig = MAX(1, MAXPHYS / bsize - 1); 593 if (density == 0) 594 density = NFPI * fsize; 595 if (minfree < MINFREE && opt != FS_OPTSPACE) { 596 fprintf(stderr, "Warning: changing optimization to space "); 597 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE); 598 opt = FS_OPTSPACE; 599 } 600 if (trackspares == -1) 601 trackspares = 0; 602 nphyssectors = nsectors + trackspares; 603 if (cylspares == -1) 604 cylspares = 0; 605 secpercyl = nsectors * ntracks - cylspares; 606 /* 607 * Only complain if -t or -u have been specified; the default 608 * case (4096 sectors per cylinder) is intended to disagree 609 * with the disklabel. 610 */ 611 if (t_or_u_flag && (uint32_t)secpercyl != geom.d_secpercyl) 612 fprintf(stderr, "%s (%d) %s (%u)\n", 613 "Warning: calculated sectors per cylinder", secpercyl, 614 "disagrees with disk label", geom.d_secpercyl); 615 if (maxbpg == 0) 616 maxbpg = MAXBLKPG(bsize); 617 headswitch = geom.d_headswitch; 618 trackseek = geom.d_trkseek; 619 realsectorsize = sectorsize; 620 if (sectorsize != DEV_BSIZE) { /* XXX */ 621 int secperblk = sectorsize / DEV_BSIZE; 622 623 sectorsize = DEV_BSIZE; 624 nsectors *= secperblk; 625 nphyssectors *= secperblk; 626 secpercyl *= secperblk; 627 fssize *= secperblk; 628 } 629 if (mfs) { 630 mfs_mtpt = argv[1]; 631 if ( 632 stat(mfs_mtpt, &mfs_mtstat) < 0 || 633 !S_ISDIR(mfs_mtstat.st_mode) 634 ) { 635 fatal("mount point not dir: %s", mfs_mtpt); 636 } 637 } 638 mkfs(special, fsi, fso, (Cflag && mfs) ? argv[1] : NULL); 639 640 /* 641 * NOTE: Newfs no longer accesses or attempts to update the 642 * filesystem disklabel. 643 * 644 * NOTE: fssize is converted from 512 byte sectors 645 * to filesystem block-sized sectors by mkfs XXX. 646 */ 647 if (!Nflag) 648 close(fso); 649 close(fsi); 650 #ifdef MFS 651 if (mfs) { 652 struct mfs_args args; 653 654 bzero(&args, sizeof(args)); 655 656 snprintf(mfsdevname, sizeof(mfsdevname), "/dev/mfs%d", 657 getpid()); 658 args.fspec = mfsdevname; 659 args.export.ex_root = -2; 660 if (mntflags & MNT_RDONLY) 661 args.export.ex_flags = MNT_EXRDONLY; 662 else 663 args.export.ex_flags = 0; 664 args.base = membase; 665 args.size = fssize * fsize; 666 667 error = getvfsbyname("mfs", &vfc); 668 if (error && vfsisloadable("mfs")) { 669 if (vfsload("mfs")) 670 fatal("vfsload(mfs)"); 671 endvfsent(); /* flush cache */ 672 error = getvfsbyname("mfs", &vfc); 673 } 674 if (error) 675 fatal("mfs filesystem not available"); 676 677 #if 0 678 int udev; 679 udev = (253 << 8) | (getpid() & 255) | 680 ((getpid() & ~0xFF) << 8); 681 if (mknod(mfsdevname, S_IFCHR | 0700, udev) < 0) 682 printf("Warning: unable to create %s\n", mfsdevname); 683 #endif 684 signal(SIGINT, mfsintr); 685 if (mount(vfc.vfc_name, argv[1], mntflags, &args) < 0) 686 fatal("%s: %s", argv[1], strerror(errno)); 687 signal(SIGINT, SIG_DFL); 688 mfsintr(SIGINT); 689 } 690 #endif 691 exit(0); 692 } 693 694 #ifdef MFS 695 696 static void 697 mfsintr(__unused int signo) 698 { 699 if (filename) 700 munmap(membase, fssize * fsize); 701 #if 0 702 remove(mfsdevname); 703 #endif 704 } 705 706 #endif 707 708 /*VARARGS*/ 709 void 710 fatal(const char *fmt, ...) 711 { 712 va_list ap; 713 714 va_start(ap, fmt); 715 if (fcntl(STDERR_FILENO, F_GETFL) < 0) { 716 openlog(progname, LOG_CONS, LOG_DAEMON); 717 vsyslog(LOG_ERR, fmt, ap); 718 closelog(); 719 } else { 720 vwarnx(fmt, ap); 721 } 722 va_end(ap); 723 exit(1); 724 /*NOTREACHED*/ 725 } 726 727 void 728 usage(void) 729 { 730 if (mfs) { 731 fprintf(stderr, 732 "usage: %s [ -fsoptions ] special-device mount-point\n", 733 progname); 734 } else 735 fprintf(stderr, 736 "usage: %s [ -fsoptions ] special-device%s\n", 737 progname, 738 #ifdef COMPAT 739 " [device-type]"); 740 #else 741 ""); 742 #endif 743 fprintf(stderr, "where fsoptions are:\n"); 744 fprintf(stderr, "\t-C (mfs) Copy the underlying filesystem to the MFS mount\n"); 745 fprintf(stderr, "\t-E erase file system contents using TRIM\n"); 746 fprintf(stderr, "\t-L volume name\n"); 747 fprintf(stderr, 748 "\t-N do not create file system, just print out parameters\n"); 749 fprintf(stderr, "\t-O create a 4.3BSD format filesystem\n"); 750 fprintf(stderr, "\t-S sector size\n"); 751 #ifdef COMPAT 752 fprintf(stderr, "\t-T disktype\n"); 753 #endif 754 fprintf(stderr, "\t-U enable soft updates\n"); 755 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 756 fprintf(stderr, "\t-b block size\n"); 757 fprintf(stderr, "\t-c cylinders/group\n"); 758 fprintf(stderr, "\t-d rotational delay between contiguous blocks\n"); 759 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 760 fprintf(stderr, "\t-f frag size\n"); 761 fprintf(stderr, "\t-g average file size\n"); 762 fprintf(stderr, "\t-h average files per directory\n"); 763 fprintf(stderr, "\t-i number of bytes per inode\n"); 764 fprintf(stderr, "\t-k sector 0 skew, per track\n"); 765 fprintf(stderr, "\t-l hardware sector interleave\n"); 766 fprintf(stderr, "\t-m minimum free space %%\n"); 767 fprintf(stderr, "\t-n number of distinguished rotational positions\n"); 768 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 769 fprintf(stderr, "\t-p spare sectors per track\n"); 770 fprintf(stderr, "\t-s file system size (sectors)\n"); 771 fprintf(stderr, "\t-r revolutions/minute\n"); 772 fprintf(stderr, "\t-t tracks/cylinder\n"); 773 fprintf(stderr, "\t-u sectors/track\n"); 774 fprintf(stderr, 775 "\t-v do not attempt to determine partition name from device name\n"); 776 fprintf(stderr, "\t-x spare sectors per cylinder\n"); 777 exit(1); 778 } 779