newfs.c revision 1.43
1 /* $NetBSD: newfs.c,v 1.43 2001/07/29 09:55:22 lukem Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1989, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)newfs.c 8.13 (Berkeley) 5/1/95"; 45 #else 46 __RCSID("$NetBSD: newfs.c,v 1.43 2001/07/29 09:55:22 lukem Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 /* 51 * newfs: friendly front end to mkfs 52 */ 53 #include <sys/param.h> 54 #include <sys/stat.h> 55 #include <sys/ioctl.h> 56 #include <sys/disklabel.h> 57 #include <sys/file.h> 58 #include <sys/mount.h> 59 #include <sys/sysctl.h> 60 #include <sys/wait.h> 61 62 #include <ufs/ufs/dir.h> 63 #include <ufs/ufs/dinode.h> 64 #include <ufs/ufs/ufsmount.h> 65 #include <ufs/ffs/fs.h> 66 67 #include <ctype.h> 68 #include <disktab.h> 69 #include <errno.h> 70 #include <paths.h> 71 #include <stdio.h> 72 #include <stdlib.h> 73 #include <string.h> 74 #include <syslog.h> 75 #include <unistd.h> 76 #include <signal.h> 77 #include <err.h> 78 #include <util.h> 79 80 #include "mntopts.h" 81 #include "dkcksum.h" 82 #include "extern.h" 83 84 struct mntopt mopts[] = { 85 MOPT_STDOPTS, 86 MOPT_ASYNC, 87 MOPT_UPDATE, 88 MOPT_NOATIME, 89 { NULL }, 90 }; 91 92 static struct disklabel *getdisklabel(char *, int); 93 static void rewritelabel(char *, int, struct disklabel *); 94 static int strsuftoi(const char *, const char *, int, int); 95 static void usage(void); 96 int main(int, char *[]); 97 98 #define COMPAT /* allow non-labeled disks */ 99 100 /* 101 * The following two constants set the default block and fragment sizes. 102 * Both constants must be a power of 2 and meet the following constraints: 103 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 104 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 105 * DESBLKSIZE / DESFRAGSIZE <= 8 106 */ 107 #define DFL_FRAGSIZE 1024 108 #define DFL_BLKSIZE 8192 109 110 /* 111 * Default sector size. 112 */ 113 #define DFL_SECSIZE 512 114 115 /* 116 * Cylinder groups may have up to many cylinders. The actual 117 * number used depends upon how much information can be stored 118 * on a single cylinder. The default is to use 16 cylinders 119 * per group. 120 */ 121 #define DESCPG 16 /* desired fs_cpg */ 122 123 /* 124 * ROTDELAY gives the minimum number of milliseconds to initiate 125 * another disk transfer on the same cylinder. It is used in 126 * determining the rotationally optimal layout for disk blocks 127 * within a file; the default of fs_rotdelay is 0ms. 128 */ 129 #define ROTDELAY 0 130 131 /* 132 * MAXBLKPG determines the maximum number of data blocks which are 133 * placed in a single cylinder group. The default is one indirect 134 * block worth of data blocks. 135 */ 136 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 137 138 /* 139 * Each file system has a number of inodes statically allocated. 140 * We allocate one inode slot per NFPI fragments, expecting this 141 * to be far more than we will ever need. 142 */ 143 #define NFPI 4 144 145 /* 146 * For each cylinder we keep track of the availability of blocks at different 147 * rotational positions, so that we can lay out the data to be picked 148 * up with minimum rotational latency. NRPOS is the default number of 149 * rotational positions that we distinguish. With NRPOS of 8 the resolution 150 * of our summary information is 2ms for a typical 3600 rpm drive. Caching 151 * and zoning pretty much defeats rotational optimization, so we now use a 152 * default of 1. 153 */ 154 #define NRPOS 1 /* number distinct rotational positions */ 155 156 157 int mfs; /* run as the memory based filesystem */ 158 int Nflag; /* run without writing file system */ 159 int Oflag; /* format as an 4.3BSD file system */ 160 int fssize; /* file system size */ 161 int ntracks; /* # tracks/cylinder */ 162 int 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 rpm; /* revolutions/minute of drive */ 169 int interleave; /* hardware sector interleave */ 170 int trackskew = -1; /* sector 0 skew, per track */ 171 int headswitch; /* head switch time, usec */ 172 int trackseek; /* track-to-track seek, usec */ 173 int fsize = 0; /* fragment size */ 174 int bsize = 0; /* block size */ 175 int cpg = DESCPG; /* cylinders/cylinder group */ 176 int cpgflg; /* cylinders/cylinder group flag was given */ 177 int minfree = MINFREE; /* free space threshold */ 178 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 179 int density; /* number of bytes per inode */ 180 int maxcontig = 0; /* max contiguous blocks to allocate */ 181 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 182 int maxbpg; /* maximum blocks per file in a cyl group */ 183 int nrpos = NRPOS; /* # of distinguished rotational positions */ 184 int bbsize = BBSIZE; /* boot block size */ 185 int sbsize = SBSIZE; /* superblock size */ 186 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 187 u_long memleft; /* virtual memory available */ 188 caddr_t membase; /* start address of memory based filesystem */ 189 int needswap; /* Filesystem not in native byte order */ 190 #ifdef COMPAT 191 char *disktype; 192 int unlabeled; 193 #endif 194 195 char device[MAXPATHLEN]; 196 197 int 198 main(int argc, char *argv[]) 199 { 200 struct partition *pp; 201 struct disklabel *lp; 202 struct disklabel mfsfakelabel; 203 struct partition oldpartition; 204 struct stat st; 205 struct statfs *mp; 206 int ch, fsi, fso, len, maxpartitions, n, Fflag, Zflag; 207 char *cp, *endp, *s1, *s2, *special; 208 const char *opstring; 209 long long llsize; 210 #ifdef MFS 211 char mountfromname[100]; 212 pid_t pid, res; 213 struct statfs sf; 214 int status; 215 #endif 216 217 cp = NULL; 218 fsi = fso = -1; 219 Fflag = Zflag = 0; 220 if (strstr(getprogname(), "mfs")) { 221 mfs = 1; 222 Nflag++; 223 } 224 225 maxpartitions = getmaxpartitions(); 226 if (maxpartitions > 26) 227 errx(1, "insane maxpartitions value %d", maxpartitions); 228 229 opstring = mfs ? 230 "NT:a:b:c:d:e:f:i:m:o:s:" : 231 "B:FNOS:T:Za:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:"; 232 while ((ch = getopt(argc, argv, opstring)) != -1) 233 switch (ch) { 234 case 'B': 235 if (strcmp(optarg, "be") == 0) { 236 #if BYTE_ORDER == LITTLE_ENDIAN 237 needswap = 1; 238 #endif 239 } else if (strcmp(optarg, "le") == 0) { 240 #if BYTE_ORDER == BIG_ENDIAN 241 needswap = 1; 242 #endif 243 } else 244 usage(); 245 break; 246 case 'F': 247 Fflag = 1; 248 break; 249 case 'N': 250 Nflag = 1; 251 break; 252 case 'O': 253 Oflag = 1; 254 break; 255 case 'S': 256 sectorsize = strsuftoi("sector size", 257 optarg, 1, INT_MAX); 258 break; 259 #ifdef COMPAT 260 case 'T': 261 disktype = optarg; 262 break; 263 #endif 264 case 'Z': 265 Zflag = 1; 266 break; 267 case 'a': 268 maxcontig = strsuftoi("maximum contiguous blocks", 269 optarg, 1, INT_MAX); 270 break; 271 case 'b': 272 bsize = strsuftoi("block size", 273 optarg, MINBSIZE, INT_MAX); 274 break; 275 case 'c': 276 cpg = strsuftoi("cylinders per group", 277 optarg, 1, INT_MAX); 278 cpgflg++; 279 break; 280 case 'd': 281 rotdelay = strsuftoi("rotational delay", 282 optarg, 0, INT_MAX); 283 break; 284 case 'e': 285 maxbpg = strsuftoi( 286 "blocks per file in a cylinder group", 287 optarg, 1, INT_MAX); 288 break; 289 case 'f': 290 fsize = strsuftoi("fragment size", 291 optarg, 1, INT_MAX); 292 break; 293 case 'i': 294 density = strsuftoi("bytes per inode", 295 optarg, 1, INT_MAX); 296 break; 297 case 'k': 298 trackskew = strsuftoi("track skew", 299 optarg, 0, INT_MAX); 300 break; 301 case 'l': 302 interleave = strsuftoi("interleave", 303 optarg, 1, INT_MAX); 304 break; 305 case 'm': 306 minfree = strsuftoi("free space %", 307 optarg, 0, 99); 308 break; 309 case 'n': 310 nrpos = strsuftoi("rotational layout count", 311 optarg, 1, INT_MAX); 312 break; 313 case 'o': 314 if (mfs) 315 getmntopts(optarg, mopts, &mntflags, 0); 316 else { 317 if (strcmp(optarg, "space") == 0) 318 opt = FS_OPTSPACE; 319 else if (strcmp(optarg, "time") == 0) 320 opt = FS_OPTTIME; 321 else 322 errx(1, "%s %s", 323 "unknown optimization preference: ", 324 "use `space' or `time'."); 325 } 326 break; 327 case 'p': 328 trackspares = strsuftoi("spare sectors per track", 329 optarg, 0, INT_MAX); 330 break; 331 case 'r': 332 rpm = strsuftoi("revolutions per minute", 333 optarg, 1, INT_MAX); 334 break; 335 case 's': 336 llsize = strtoll(optarg, &endp, 10); 337 if (endp[0] != '\0' && endp[1] != '\0') 338 llsize = -1; 339 else { 340 int ssiz; 341 342 ssiz = (sectorsize ? sectorsize : DFL_SECSIZE); 343 switch (tolower((unsigned char)endp[0])) { 344 case 'b': 345 llsize /= ssiz; 346 break; 347 case 'k': 348 llsize *= 1024 / ssiz; 349 break; 350 case 'm': 351 llsize *= 1024 * 1024 / ssiz; 352 break; 353 case 'g': 354 llsize *= 1024 * 1024 * 1024 / ssiz; 355 break; 356 case '\0': 357 case 's': 358 break; 359 default: 360 llsize = -1; 361 } 362 } 363 if (llsize > INT_MAX) 364 errx(1, "file system size `%s' is too large.", 365 optarg); 366 if (llsize <= 0) 367 errx(1, 368 "`%s' is not a valid number for file system size.", 369 optarg); 370 fssize = (int)llsize; 371 break; 372 case 't': 373 ntracks = strsuftoi("total tracks", 374 optarg, 1, INT_MAX); 375 break; 376 case 'u': 377 nsectors = strsuftoi("sectors per track", 378 optarg, 1, INT_MAX); 379 break; 380 case 'x': 381 cylspares = strsuftoi("spare sectors per cylinder", 382 optarg, 0, INT_MAX); 383 break; 384 case '?': 385 default: 386 usage(); 387 } 388 argc -= optind; 389 argv += optind; 390 391 if (argc != 2 && (mfs || argc != 1)) 392 usage(); 393 394 special = argv[0]; 395 if ((mfs && !strcmp(special, "swap")) || Fflag) { 396 /* 397 * it's an MFS mounted on "swap" or a file system image; 398 * fake up a label. XXX 399 */ 400 if (!sectorsize) 401 sectorsize = DFL_SECSIZE; 402 403 if (Fflag && (stat(special, &st) != -1 && !S_ISREG(st.st_mode))) 404 errx(1, "%s is not a regular file", special); 405 if (Fflag && !Nflag) { /* creating image in a regular file */ 406 fso = open(special, O_RDWR | O_CREAT | O_TRUNC, 0777); 407 if (fso == -1) 408 err(1, "can't open file %s", special); 409 fsi = dup(fso); 410 if (fssize == 0) 411 errx(1, "need to specify size when using -F"); 412 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 413 err(1, "can't resize %s to %d", 414 special, fssize); 415 416 if (Zflag) { /* pre-zero the file */ 417 char *buf; 418 int i; 419 420 if ((buf = calloc(1, sectorsize)) == NULL) 421 err(1, "can't malloc buffer of %d", 422 sectorsize); 423 printf( 424 "Creating file system image in `%s', size %lld bytes.\n", 425 special, (long long)(fssize * sectorsize)); 426 for (i = 0; i < fssize; i++) { 427 if (write(fso, buf, sectorsize) != 428 sectorsize) 429 err(1, 430 "writing image sector %d", 431 i); 432 } 433 } 434 435 } 436 437 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 438 mfsfakelabel.d_secsize = sectorsize; 439 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 440 mfsfakelabel.d_ntracks = 16; 441 mfsfakelabel.d_ncylinders = 16; 442 mfsfakelabel.d_secpercyl = 443 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 444 mfsfakelabel.d_secperunit = 445 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 446 mfsfakelabel.d_rpm = 3600; 447 mfsfakelabel.d_interleave = 1; 448 mfsfakelabel.d_npartitions = 1; 449 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 450 mfsfakelabel.d_partitions[0].p_fsize = 1024; 451 mfsfakelabel.d_partitions[0].p_frag = 8; 452 mfsfakelabel.d_partitions[0].p_cpg = 16; 453 454 lp = &mfsfakelabel; 455 pp = &mfsfakelabel.d_partitions[0]; 456 457 goto havelabel; 458 } 459 cp = strrchr(special, '/'); 460 if (cp == NULL) { 461 /* 462 * No path prefix; try /dev/r%s then /dev/%s. 463 */ 464 (void)snprintf(device, sizeof(device), "%sr%s", 465 _PATH_DEV, special); 466 if (stat(device, &st) == -1) 467 (void)snprintf(device, sizeof(device), "%s%s", 468 _PATH_DEV, special); 469 special = device; 470 } 471 if (Nflag) { 472 fso = -1; 473 } else { 474 fso = open(special, O_WRONLY); 475 if (fso < 0) 476 err(1, "%s: open", special); 477 478 /* Bail if target special is mounted */ 479 n = getmntinfo(&mp, MNT_NOWAIT); 480 if (n == 0) 481 err(1, "%s: getmntinfo", special); 482 483 len = sizeof(_PATH_DEV) - 1; 484 s1 = special; 485 if (strncmp(_PATH_DEV, s1, len) == 0) 486 s1 += len; 487 488 while (--n >= 0) { 489 s2 = mp->f_mntfromname; 490 if (strncmp(_PATH_DEV, s2, len) == 0) { 491 s2 += len - 1; 492 *s2 = 'r'; 493 } 494 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 495 errx(1, "%s is mounted on %s", 496 special, mp->f_mntonname); 497 ++mp; 498 } 499 } 500 if (mfs && disktype != NULL) { 501 lp = (struct disklabel *)getdiskbyname(disktype); 502 if (lp == NULL) 503 errx(1, "%s: unknown disk type", disktype); 504 pp = &lp->d_partitions[1]; 505 } else { 506 fsi = open(special, O_RDONLY); 507 if (fsi < 0) 508 err(1, "%s: open", special); 509 if (fstat(fsi, &st) < 0) 510 err(1, "%s: fstat", special); 511 if (!S_ISCHR(st.st_mode) && !mfs) 512 warnx("%s: not a character-special device", special); 513 cp = strchr(argv[0], '\0') - 1; 514 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 515 && !isdigit(*cp))) 516 errx(1, "can't figure out file system partition"); 517 #ifdef COMPAT 518 if (!mfs && disktype == NULL) 519 disktype = argv[1]; 520 #endif 521 lp = getdisklabel(special, fsi); 522 if (isdigit(*cp)) 523 pp = &lp->d_partitions[0]; 524 else 525 pp = &lp->d_partitions[*cp - 'a']; 526 if (pp->p_size == 0) 527 errx(1, "`%c' partition is unavailable", *cp); 528 if (pp->p_fstype == FS_BOOT) 529 errx(1, "`%c' partition overlaps boot program", *cp); 530 } 531 532 havelabel: 533 if (fssize == 0) 534 fssize = pp->p_size; 535 if (fssize > pp->p_size && !mfs && !Fflag) 536 errx(1, "maximum file system size on the `%c' partition is %d", 537 *cp, pp->p_size); 538 if (rpm == 0) { 539 rpm = lp->d_rpm; 540 if (rpm <= 0) 541 rpm = 3600; 542 } 543 if (ntracks == 0) { 544 ntracks = lp->d_ntracks; 545 if (ntracks <= 0) 546 errx(1, "no default #tracks"); 547 } 548 if (nsectors == 0) { 549 nsectors = lp->d_nsectors; 550 if (nsectors <= 0) 551 errx(1, "no default #sectors/track"); 552 } 553 if (sectorsize == 0) { 554 sectorsize = lp->d_secsize; 555 if (sectorsize <= 0) 556 errx(1, "no default sector size"); 557 } 558 if (trackskew == -1) { 559 trackskew = lp->d_trackskew; 560 if (trackskew < 0) 561 trackskew = 0; 562 } 563 if (interleave == 0) { 564 interleave = lp->d_interleave; 565 if (interleave <= 0) 566 interleave = 1; 567 } 568 if (fsize == 0) { 569 fsize = pp->p_fsize; 570 if (fsize <= 0) 571 fsize = MAX(DFL_FRAGSIZE, lp->d_secsize); 572 } 573 if (bsize == 0) { 574 bsize = pp->p_frag * pp->p_fsize; 575 if (bsize <= 0) 576 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 577 } 578 if (cpgflg == 0) { 579 if (pp->p_cpg != 0) 580 cpg = pp->p_cpg; 581 } 582 /* 583 * Maxcontig sets the default for the maximum number of blocks 584 * that may be allocated sequentially. With filesystem clustering 585 * it is possible to allocate contiguous blocks up to the maximum 586 * transfer size permitted by the controller or buffering. 587 */ 588 if (maxcontig == 0) 589 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 590 if (density == 0) 591 density = NFPI * fsize; 592 if (minfree < MINFREE && opt != FS_OPTSPACE) { 593 warnx("%s %s %d%%", "Warning: changing optimization to space", 594 "because minfree is less than", MINFREE); 595 opt = FS_OPTSPACE; 596 } 597 if (trackspares == -1) { 598 trackspares = lp->d_sparespertrack; 599 if (trackspares < 0) 600 trackspares = 0; 601 } 602 nphyssectors = nsectors + trackspares; 603 if (cylspares == -1) { 604 cylspares = lp->d_sparespercyl; 605 if (cylspares < 0) 606 cylspares = 0; 607 } 608 secpercyl = nsectors * ntracks - cylspares; 609 if (secpercyl != lp->d_secpercyl) 610 warnx("%s (%d) %s (%u)\n", 611 "Warning: calculated sectors per cylinder", secpercyl, 612 "disagrees with disk label", lp->d_secpercyl); 613 if (maxbpg == 0) 614 maxbpg = MAXBLKPG(bsize); 615 headswitch = lp->d_headswitch; 616 trackseek = lp->d_trkseek; 617 #ifdef notdef /* label may be 0 if faked up by kernel */ 618 bbsize = lp->d_bbsize; 619 sbsize = lp->d_sbsize; 620 #endif 621 oldpartition = *pp; 622 mkfs(pp, special, fsi, fso); 623 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 624 rewritelabel(special, fso, lp); 625 if (!Nflag) 626 close(fso); 627 close(fsi); 628 #ifdef MFS 629 if (mfs) { 630 struct mfs_args args; 631 632 switch (pid = fork()) { 633 case -1: 634 perror("mfs"); 635 exit(10); 636 case 0: 637 (void)snprintf(mountfromname, sizeof(mountfromname), 638 "mfs:%d", getpid()); 639 break; 640 default: 641 (void)snprintf(mountfromname, sizeof(mountfromname), 642 "mfs:%d", pid); 643 for (;;) { 644 /* 645 * spin until the mount succeeds 646 * or the child exits 647 */ 648 usleep(1); 649 650 /* 651 * XXX Here is a race condition: another process 652 * can mount a filesystem which hides our 653 * ramdisk before we see the success. 654 */ 655 if (statfs(argv[1], &sf) < 0) 656 err(88, "statfs %s", argv[1]); 657 if (!strcmp(sf.f_mntfromname, mountfromname) && 658 !strncmp(sf.f_mntonname, argv[1], 659 MNAMELEN) && 660 !strcmp(sf.f_fstypename, "mfs")) 661 exit(0); 662 663 res = waitpid(pid, &status, WNOHANG); 664 if (res == -1) 665 err(11, "waitpid"); 666 if (res != pid) 667 continue; 668 if (WIFEXITED(status)) { 669 if (WEXITSTATUS(status) == 0) 670 exit(0); 671 errx(1, "%s: mount: %s", argv[1], 672 strerror(WEXITSTATUS(status))); 673 } else 674 errx(11, "abnormal termination"); 675 } 676 /* NOTREACHED */ 677 } 678 679 (void) setsid(); 680 (void) close(0); 681 (void) close(1); 682 (void) close(2); 683 (void) chdir("/"); 684 685 args.fspec = mountfromname; 686 args.export.ex_root = -2; 687 if (mntflags & MNT_RDONLY) 688 args.export.ex_flags = MNT_EXRDONLY; 689 else 690 args.export.ex_flags = 0; 691 args.base = membase; 692 args.size = fssize * sectorsize; 693 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) 694 exit(errno); /* parent prints message */ 695 } 696 #endif 697 exit(0); 698 } 699 700 #ifdef COMPAT 701 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 702 #else 703 const char lmsg[] = "%s: can't read disk label"; 704 #endif 705 706 static struct disklabel * 707 getdisklabel(char *s, volatile int fd) 708 /* XXX why is fs volatile?! */ 709 { 710 static struct disklabel lab; 711 712 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 713 #ifdef COMPAT 714 if (disktype) { 715 struct disklabel *lp; 716 717 unlabeled++; 718 lp = getdiskbyname(disktype); 719 if (lp == NULL) 720 errx(1, "%s: unknown disk type", disktype); 721 return (lp); 722 } 723 #endif 724 warn("ioctl (GDINFO)"); 725 errx(1, lmsg, s); 726 } 727 return (&lab); 728 } 729 730 static void 731 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 732 /* XXX why is fd volatile?! */ 733 { 734 #ifdef COMPAT 735 if (unlabeled) 736 return; 737 #endif 738 lp->d_checksum = 0; 739 lp->d_checksum = dkcksum(lp); 740 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 741 warn("ioctl (WDINFO)"); 742 errx(1, "%s: can't rewrite disk label", s); 743 } 744 #if __vax__ 745 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 746 int i; 747 int cfd; 748 daddr_t alt; 749 char specname[64]; 750 char blk[1024]; 751 char *cp; 752 753 /* 754 * Make name for 'c' partition. 755 */ 756 strcpy(specname, s); 757 cp = specname + strlen(specname) - 1; 758 if (!isdigit(*cp)) 759 *cp = 'c'; 760 cfd = open(specname, O_WRONLY); 761 if (cfd < 0) 762 err(1, "%s: open", specname); 763 memset(blk, 0, sizeof(blk)); 764 *(struct disklabel *)(blk + LABELOFFSET) = *lp; 765 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 766 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 767 off_t offset; 768 769 offset = alt + i; 770 offset *= lp->d_secsize; 771 if (lseek(cfd, offset, SEEK_SET) == -1) 772 err(1, "lseek to badsector area: "); 773 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 774 warn("alternate label %d write", i/2); 775 } 776 close(cfd); 777 } 778 #endif 779 } 780 781 static int 782 strsuftoi(const char *desc, const char *arg, int min, int max) 783 { 784 long long result; 785 char *ep; 786 787 errno = 0; 788 result = strtoll(arg, &ep, 10); 789 if (ep[0] != '\0' && ep[1] != '\0') 790 errx(1, "%s `%s' is not a valid number.", desc, arg); 791 switch (tolower((unsigned char)ep[0])) { 792 case '\0': 793 case 'b': 794 break; 795 case 'k': 796 result <<= 10; 797 break; 798 case 'm': 799 result <<= 20; 800 break; 801 case 'g': 802 result <<= 30; 803 break; 804 default: 805 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 806 } 807 if (result < min) 808 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 809 desc, arg, result, min); 810 if (result > max) 811 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 812 desc, arg, result, max); 813 return ((int)result); 814 } 815 816 static void 817 usage(void) 818 { 819 820 if (mfs) { 821 fprintf(stderr, 822 "usage: %s [ fsoptions ] special-device mount-point\n", 823 getprogname()); 824 } else 825 fprintf(stderr, 826 "usage: %s [ fsoptions ] special-device%s\n", 827 getprogname(), 828 #ifdef COMPAT 829 " [device-type]"); 830 #else 831 ""); 832 #endif 833 fprintf(stderr, "where fsoptions are:\n"); 834 if (!mfs) { 835 fprintf(stderr, 836 "\t-B byteorder\tbyte order (`be' or `le')\n"); 837 fprintf(stderr, 838 "\t-F\t\tcreate file system image in regular file\n"); 839 } 840 fprintf(stderr, "\t-N\t\tdo not create file system, " 841 "just print out parameters\n"); 842 if (!mfs) { 843 fprintf(stderr, 844 "\t-O\t\tcreate a 4.3BSD format filesystem\n"); 845 fprintf(stderr, 846 "\t-S secsize\tsector size\n"); 847 } 848 #ifdef COMPAT 849 fprintf(stderr, "\t-T disktype\tdisk type\n"); 850 #endif 851 if (!mfs) 852 fprintf(stderr, 853 "\t-Z\t\tpre-zero the image file (with -F)\n"); 854 fprintf(stderr, "\t-a maxcontig\tmaximum contiguous blocks\n"); 855 fprintf(stderr, "\t-b bsize\tblock size\n"); 856 fprintf(stderr, "\t-c cpg\t\tcylinders/group\n"); 857 fprintf(stderr, "\t-d rotdelay\trotational delay between " 858 "contiguous blocks\n"); 859 fprintf(stderr, "\t-e maxbpg\tmaximum blocks per file " 860 "in a cylinder group\n"); 861 fprintf(stderr, "\t-f fsize\tfragment size\n"); 862 fprintf(stderr, "\t-i density\tnumber of bytes per inode\n"); 863 if (!mfs) { 864 fprintf(stderr, 865 "\t-k trackskew\tsector 0 skew, per track\n"); 866 fprintf(stderr, 867 "\t-l interleave\thardware sector interleave\n"); 868 } 869 fprintf(stderr, "\t-m minfree\tminimum free space %%\n"); 870 if (!mfs) 871 fprintf(stderr, 872 "\t-n nrpos\tnumber of distinguished " 873 "rotational positions\n"); 874 fprintf(stderr, "\t-o optim\toptimization preference " 875 "(`space' or `time')\n"); 876 if (!mfs) 877 fprintf(stderr, 878 "\t-p trackspares\tspare sectors per track\n"); 879 fprintf(stderr, "\t-s fssize\tfile system size (sectors)\n"); 880 if (!mfs) { 881 fprintf(stderr, 882 "\t-r rpm\t\trevolutions/minute\n"); 883 fprintf(stderr, 884 "\t-t ntracks\ttracks/cylinder\n"); 885 fprintf(stderr, 886 "\t-u nsectors\tsectors/track\n"); 887 fprintf(stderr, 888 "\t-x cylspares\tspare sectors per cylinder\n"); 889 } 890 exit(1); 891 } 892
Indexes created Sun Sep 28 07:09:56 GMT 2025