newfs.c revision 1.53
1 /* $NetBSD: newfs.c,v 1.53 2001/12/30 18:49:28 augustss 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 1.53 2001/12/30 18:49:28 augustss 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/ioctl.h> 55 #include <sys/disklabel.h> 56 #include <sys/file.h> 57 #include <sys/mount.h> 58 #include <sys/sysctl.h> 59 #include <sys/wait.h> 60 61 #include <ufs/ufs/dir.h> 62 #include <ufs/ufs/dinode.h> 63 #include <ufs/ufs/ufsmount.h> 64 #include <ufs/ffs/fs.h> 65 66 #include <ctype.h> 67 #include <disktab.h> 68 #include <errno.h> 69 #include <paths.h> 70 #include <stdio.h> 71 #include <stdlib.h> 72 #include <string.h> 73 #include <syslog.h> 74 #include <unistd.h> 75 #include <signal.h> 76 #include <err.h> 77 #include <util.h> 78 79 #include "mntopts.h" 80 #include "dkcksum.h" 81 #include "extern.h" 82 83 struct mntopt mopts[] = { 84 MOPT_STDOPTS, 85 MOPT_ASYNC, 86 MOPT_UPDATE, 87 MOPT_NOATIME, 88 { NULL }, 89 }; 90 91 static struct disklabel *getdisklabel(char *, int); 92 static void rewritelabel(char *, int, struct disklabel *); 93 static int strsuftoi(const char *, const char *, int, int); 94 static void usage(void); 95 int main(int, char *[]); 96 97 #define COMPAT /* allow non-labeled disks */ 98 99 /* 100 * The following two constants set the default block and fragment sizes. 101 * Both constants must be a power of 2 and meet the following constraints: 102 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 103 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 104 * DESBLKSIZE / DESFRAGSIZE <= 8 105 */ 106 /* 107 * For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, 108 * otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use 109 * L_DFL_*. 110 */ 111 #define SMALL_FSSIZE (20*1024*2) 112 #define S_DFL_FRAGSIZE 512 113 #define S_DFL_BLKSIZE 4096 114 #define MEDIUM_FSSIZE (1000*1024*2) 115 #define M_DFL_FRAGSIZE 1024 116 #define M_DFL_BLKSIZE 8192 117 #define L_DFL_FRAGSIZE 2048 118 #define L_DFL_BLKSIZE 16384 119 120 /* 121 * Default sector size. 122 */ 123 #define DFL_SECSIZE 512 124 125 /* 126 * Cylinder groups may have up to many cylinders. The actual 127 * number used depends upon how much information can be stored 128 * on a single cylinder. The default is to use 16 cylinders 129 * per group. 130 */ 131 #define DESCPG 65536 /* desired fs_cpg ("infinity") */ 132 133 /* 134 * ROTDELAY gives the minimum number of milliseconds to initiate 135 * another disk transfer on the same cylinder. It is used in 136 * determining the rotationally optimal layout for disk blocks 137 * within a file; the default of fs_rotdelay is 0ms. 138 */ 139 #define ROTDELAY 0 140 141 /* 142 * MAXBLKPG determines the maximum number of data blocks which are 143 * placed in a single cylinder group. The default is one indirect 144 * block worth of data blocks. 145 */ 146 #define MAXBLKPG(bsize) ((bsize) / sizeof(daddr_t)) 147 148 /* 149 * Each file system has a number of inodes statically allocated. 150 * We allocate one inode slot per NFPI fragments, expecting this 151 * to be far more than we will ever need. 152 */ 153 #define NFPI 4 154 155 /* 156 * For each cylinder we keep track of the availability of blocks at different 157 * rotational positions, so that we can lay out the data to be picked 158 * up with minimum rotational latency. NRPOS is the default number of 159 * rotational positions that we distinguish. With NRPOS of 8 the resolution 160 * of our summary information is 2ms for a typical 3600 rpm drive. Caching 161 * and zoning pretty much defeats rotational optimization, so we now use a 162 * default of 1. 163 */ 164 #define NRPOS 1 /* number distinct rotational positions */ 165 166 167 int mfs; /* run as the memory based filesystem */ 168 int Nflag; /* run without writing file system */ 169 int Oflag; /* format as an 4.3BSD file system */ 170 int fssize; /* file system size */ 171 int ntracks; /* # tracks/cylinder */ 172 int nsectors; /* # sectors/track */ 173 int nphyssectors; /* # sectors/track including spares */ 174 int secpercyl; /* sectors per cylinder */ 175 int trackspares = -1; /* spare sectors per track */ 176 int cylspares = -1; /* spare sectors per cylinder */ 177 int sectorsize; /* bytes/sector */ 178 int rpm; /* revolutions/minute of drive */ 179 int interleave; /* hardware sector interleave */ 180 int trackskew = -1; /* sector 0 skew, per track */ 181 int fsize = 0; /* fragment size */ 182 int bsize = 0; /* block size */ 183 int cpg = DESCPG; /* cylinders/cylinder group */ 184 int cpgflg; /* cylinders/cylinder group flag was given */ 185 int minfree = MINFREE; /* free space threshold */ 186 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 187 int density; /* number of bytes per inode */ 188 int maxcontig = 0; /* max contiguous blocks to allocate */ 189 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 190 int maxbpg; /* maximum blocks per file in a cyl group */ 191 int nrpos = NRPOS; /* # of distinguished rotational positions */ 192 int avgfilesize = AVFILESIZ;/* expected average file size */ 193 int avgfpdir = AFPDIR; /* expected number of files per directory */ 194 int bbsize = BBSIZE; /* boot block size */ 195 int sbsize = SBSIZE; /* superblock size */ 196 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 197 u_long memleft; /* virtual memory available */ 198 caddr_t membase; /* start address of memory based filesystem */ 199 int needswap; /* Filesystem not in native byte order */ 200 #ifdef COMPAT 201 char *disktype; 202 int unlabeled; 203 #endif 204 205 char device[MAXPATHLEN]; 206 207 int 208 main(int argc, char *argv[]) 209 { 210 struct partition *pp; 211 struct disklabel *lp; 212 struct disklabel mfsfakelabel; 213 struct partition oldpartition; 214 struct statfs *mp; 215 int ch, fsi, fso, len, maxpartitions, n, Fflag, Zflag; 216 char *cp, *endp, *s1, *s2, *special; 217 const char *opstring; 218 long long llsize; 219 int dfl_fragsize, dfl_blksize; 220 #ifdef MFS 221 char mountfromname[100]; 222 pid_t pid, res; 223 struct statfs sf; 224 int status; 225 #endif 226 227 cp = NULL; 228 fsi = fso = -1; 229 Fflag = Zflag = 0; 230 if (strstr(getprogname(), "mfs")) { 231 mfs = 1; 232 Nflag++; 233 } 234 235 maxpartitions = getmaxpartitions(); 236 if (maxpartitions > 26) 237 errx(1, "insane maxpartitions value %d", maxpartitions); 238 239 opstring = mfs ? 240 "NT:a:b:c:d:e:f:g:h:i:m:o:s:" : 241 "B:FNOS:T:Za:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:x:"; 242 while ((ch = getopt(argc, argv, opstring)) != -1) 243 switch (ch) { 244 case 'B': 245 if (strcmp(optarg, "be") == 0) { 246 #if BYTE_ORDER == LITTLE_ENDIAN 247 needswap = 1; 248 #endif 249 } else if (strcmp(optarg, "le") == 0) { 250 #if BYTE_ORDER == BIG_ENDIAN 251 needswap = 1; 252 #endif 253 } else 254 usage(); 255 break; 256 case 'F': 257 Fflag = 1; 258 break; 259 case 'N': 260 Nflag = 1; 261 break; 262 case 'O': 263 Oflag = 1; 264 break; 265 case 'S': 266 sectorsize = strsuftoi("sector size", 267 optarg, 1, INT_MAX); 268 break; 269 #ifdef COMPAT 270 case 'T': 271 disktype = optarg; 272 break; 273 #endif 274 case 'Z': 275 Zflag = 1; 276 break; 277 case 'a': 278 maxcontig = strsuftoi("maximum contiguous blocks", 279 optarg, 1, INT_MAX); 280 break; 281 case 'b': 282 bsize = strsuftoi("block size", 283 optarg, MINBSIZE, MAXBSIZE); 284 break; 285 case 'c': 286 cpg = strsuftoi("cylinders per group", 287 optarg, 1, INT_MAX); 288 cpgflg++; 289 break; 290 case 'd': 291 rotdelay = strsuftoi("rotational delay", 292 optarg, 0, INT_MAX); 293 break; 294 case 'e': 295 maxbpg = strsuftoi( 296 "blocks per file in a cylinder group", 297 optarg, 1, INT_MAX); 298 break; 299 case 'f': 300 fsize = strsuftoi("fragment size", 301 optarg, 1, MAXBSIZE); 302 break; 303 case 'g': 304 avgfilesize = strsuftoi("average file size", 305 optarg, 1, INT_MAX); 306 break; 307 case 'h': 308 avgfpdir = strsuftoi("expected files per directory", 309 optarg, 1, INT_MAX); 310 break; 311 case 'i': 312 density = strsuftoi("bytes per inode", 313 optarg, 1, INT_MAX); 314 break; 315 case 'k': 316 trackskew = strsuftoi("track skew", 317 optarg, 0, INT_MAX); 318 break; 319 case 'l': 320 interleave = strsuftoi("interleave", 321 optarg, 1, INT_MAX); 322 break; 323 case 'm': 324 minfree = strsuftoi("free space %", 325 optarg, 0, 99); 326 break; 327 case 'n': 328 nrpos = strsuftoi("rotational layout count", 329 optarg, 1, INT_MAX); 330 break; 331 case 'o': 332 if (mfs) 333 getmntopts(optarg, mopts, &mntflags, 0); 334 else { 335 if (strcmp(optarg, "space") == 0) 336 opt = FS_OPTSPACE; 337 else if (strcmp(optarg, "time") == 0) 338 opt = FS_OPTTIME; 339 else 340 errx(1, "%s %s", 341 "unknown optimization preference: ", 342 "use `space' or `time'."); 343 } 344 break; 345 case 'p': 346 trackspares = strsuftoi("spare sectors per track", 347 optarg, 0, INT_MAX); 348 break; 349 case 'r': 350 rpm = strsuftoi("revolutions per minute", 351 optarg, 1, INT_MAX); 352 break; 353 case 's': 354 llsize = strtoll(optarg, &endp, 10); 355 if (endp[0] != '\0' && endp[1] != '\0') 356 llsize = -1; 357 else { 358 int ssiz; 359 360 ssiz = (sectorsize ? sectorsize : DFL_SECSIZE); 361 switch (tolower((unsigned char)endp[0])) { 362 case 'b': 363 llsize /= ssiz; 364 break; 365 case 'k': 366 llsize *= 1024 / ssiz; 367 break; 368 case 'm': 369 llsize *= 1024 * 1024 / ssiz; 370 break; 371 case 'g': 372 llsize *= 1024 * 1024 * 1024 / ssiz; 373 break; 374 case '\0': 375 case 's': 376 break; 377 default: 378 llsize = -1; 379 } 380 } 381 if (llsize > INT_MAX) 382 errx(1, "file system size `%s' is too large.", 383 optarg); 384 if (llsize <= 0) 385 errx(1, 386 "`%s' is not a valid number for file system size.", 387 optarg); 388 fssize = (int)llsize; 389 break; 390 case 't': 391 ntracks = strsuftoi("total tracks", 392 optarg, 1, INT_MAX); 393 break; 394 case 'u': 395 nsectors = strsuftoi("sectors per track", 396 optarg, 1, INT_MAX); 397 break; 398 case 'x': 399 cylspares = strsuftoi("spare sectors per cylinder", 400 optarg, 0, INT_MAX); 401 break; 402 case '?': 403 default: 404 usage(); 405 } 406 argc -= optind; 407 argv += optind; 408 409 if (argc != 2 && (mfs || argc != 1)) 410 usage(); 411 412 special = argv[0]; 413 if (Fflag || mfs) { 414 /* 415 * it's a file system image or an MFS, so fake up a label. 416 * XXX 417 */ 418 if (!sectorsize) 419 sectorsize = DFL_SECSIZE; 420 421 if (Fflag && !Nflag) { /* creating image in a regular file */ 422 if (fssize == 0) 423 errx(1, "need to specify size when using -F"); 424 fso = open(special, O_RDWR | O_CREAT | O_TRUNC, 0777); 425 if (fso == -1) 426 err(1, "can't open file %s", special); 427 if ((fsi = dup(fso)) == -1) 428 err(1, "can't dup(2) image fd"); 429 /* XXXLUKEM: only ftruncate() regular files ? */ 430 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 431 err(1, "can't resize %s to %d", 432 special, fssize); 433 434 if (Zflag) { /* pre-zero the file */ 435 char *buf; 436 int bufsize, i; 437 off_t bufrem; 438 struct statfs sfs; 439 440 if (fstatfs(fso, &sfs) == -1) { 441 warn("can't fstatfs `%s'", special); 442 bufsize = 8192; 443 } else 444 bufsize = sfs.f_iosize; 445 446 if ((buf = calloc(1, bufsize)) == NULL) 447 err(1, "can't malloc buffer of %d", 448 bufsize); 449 bufrem = fssize * sectorsize; 450 printf( 451 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 452 special, (long long)bufrem, bufsize); 453 while (bufrem > 0) { 454 i = write(fso, buf, 455 MIN(bufsize, bufrem)); 456 if (i == -1) 457 err(1, "writing image"); 458 bufrem -= i; 459 } 460 } 461 462 } 463 464 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 465 mfsfakelabel.d_secsize = sectorsize; 466 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 467 mfsfakelabel.d_ntracks = 16; 468 mfsfakelabel.d_ncylinders = 16; 469 mfsfakelabel.d_secpercyl = 470 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 471 mfsfakelabel.d_secperunit = 472 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 473 mfsfakelabel.d_rpm = 10000; 474 mfsfakelabel.d_interleave = 1; 475 mfsfakelabel.d_npartitions = 1; 476 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 477 mfsfakelabel.d_partitions[0].p_fsize = 1024; 478 mfsfakelabel.d_partitions[0].p_frag = 8; 479 mfsfakelabel.d_partitions[0].p_cpg = 16; 480 481 lp = &mfsfakelabel; 482 pp = &mfsfakelabel.d_partitions[0]; 483 484 } else { /* !Fflag && !mfs */ 485 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 486 special = device; 487 if (fsi < 0) 488 err(1, "%s: open for read", special); 489 490 if (Nflag) { 491 fso = -1; 492 } else { 493 fso = open(special, O_WRONLY); 494 if (fso < 0) 495 err(1, "%s: open for write", special); 496 497 /* Bail if target special is mounted */ 498 n = getmntinfo(&mp, MNT_NOWAIT); 499 if (n == 0) 500 err(1, "%s: getmntinfo", special); 501 502 len = sizeof(_PATH_DEV) - 1; 503 s1 = special; 504 if (strncmp(_PATH_DEV, s1, len) == 0) 505 s1 += len; 506 507 while (--n >= 0) { 508 s2 = mp->f_mntfromname; 509 if (strncmp(_PATH_DEV, s2, len) == 0) { 510 s2 += len - 1; 511 *s2 = 'r'; 512 } 513 if (strcmp(s1, s2) == 0 || 514 strcmp(s1, &s2[1]) == 0) 515 errx(1, "%s is mounted on %s", 516 special, mp->f_mntonname); 517 ++mp; 518 } 519 } 520 cp = strchr(argv[0], '\0') - 1; 521 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 522 && !isdigit(*cp))) 523 errx(1, "can't figure out file system partition"); 524 #ifdef COMPAT 525 if (disktype == NULL) 526 disktype = argv[1]; 527 #endif 528 lp = getdisklabel(special, fsi); 529 if (isdigit(*cp)) 530 pp = &lp->d_partitions[0]; 531 else 532 pp = &lp->d_partitions[*cp - 'a']; 533 if (pp->p_size == 0) 534 errx(1, "`%c' partition is unavailable", *cp); 535 if (pp->p_fstype == FS_BOOT) 536 errx(1, "`%c' partition overlaps boot program", *cp); 537 } /* !Fflag && !mfs */ 538 539 if (fssize == 0) 540 fssize = pp->p_size; 541 if (fssize > pp->p_size && !mfs && !Fflag) 542 errx(1, "maximum file system size on the `%c' partition is %d", 543 *cp, pp->p_size); 544 if (rpm == 0) { 545 rpm = lp->d_rpm; 546 if (rpm <= 0) 547 rpm = 3600; 548 } 549 if (ntracks == 0) { 550 ntracks = lp->d_ntracks; 551 if (ntracks <= 0) 552 errx(1, "no default #tracks"); 553 } 554 if (nsectors == 0) { 555 nsectors = lp->d_nsectors; 556 if (nsectors <= 0) 557 errx(1, "no default #sectors/track"); 558 } 559 if (sectorsize == 0) { 560 sectorsize = lp->d_secsize; 561 if (sectorsize <= 0) 562 errx(1, "no default sector size"); 563 } 564 if (trackskew == -1) { 565 trackskew = lp->d_trackskew; 566 if (trackskew < 0) 567 trackskew = 0; 568 } 569 if (interleave == 0) { 570 interleave = lp->d_interleave; 571 if (interleave <= 0) 572 interleave = 1; 573 } 574 575 if (fssize < SMALL_FSSIZE) { 576 dfl_fragsize = S_DFL_FRAGSIZE; 577 dfl_blksize = S_DFL_BLKSIZE; 578 } else if (fssize < MEDIUM_FSSIZE) { 579 dfl_fragsize = M_DFL_FRAGSIZE; 580 dfl_blksize = M_DFL_BLKSIZE; 581 } else { 582 dfl_fragsize = L_DFL_FRAGSIZE; 583 dfl_blksize = L_DFL_BLKSIZE; 584 } 585 586 if (fsize == 0) { 587 fsize = pp->p_fsize; 588 if (fsize <= 0) 589 fsize = MAX(dfl_fragsize, lp->d_secsize); 590 } 591 if (bsize == 0) { 592 bsize = pp->p_frag * pp->p_fsize; 593 if (bsize <= 0) 594 bsize = MIN(dfl_blksize, 8 * fsize); 595 } 596 /* 597 * Maxcontig sets the default for the maximum number of blocks 598 * that may be allocated sequentially. With filesystem clustering 599 * it is possible to allocate contiguous blocks up to the maximum 600 * transfer size permitted by the controller or buffering. 601 */ 602 if (maxcontig == 0) 603 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 604 if (density == 0) 605 density = NFPI * fsize; 606 if (minfree < MINFREE && opt != FS_OPTSPACE) { 607 warnx("%s %s %d%%", "Warning: changing optimization to space", 608 "because minfree is less than", MINFREE); 609 opt = FS_OPTSPACE; 610 } 611 if (trackspares == -1) { 612 trackspares = lp->d_sparespertrack; 613 if (trackspares < 0) 614 trackspares = 0; 615 } 616 nphyssectors = nsectors + trackspares; 617 if (cylspares == -1) { 618 cylspares = lp->d_sparespercyl; 619 if (cylspares < 0) 620 cylspares = 0; 621 } 622 secpercyl = nsectors * ntracks - cylspares; 623 if (secpercyl != lp->d_secpercyl) 624 warnx("%s (%d) %s (%u)\n", 625 "Warning: calculated sectors per cylinder", secpercyl, 626 "disagrees with disk label", lp->d_secpercyl); 627 if (maxbpg == 0) 628 maxbpg = MAXBLKPG(bsize); 629 #ifdef notdef /* label may be 0 if faked up by kernel */ 630 bbsize = lp->d_bbsize; 631 sbsize = lp->d_sbsize; 632 #endif 633 oldpartition = *pp; 634 mkfs(pp, special, fsi, fso); 635 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 636 rewritelabel(special, fso, lp); 637 if (!Nflag) 638 close(fso); 639 close(fsi); 640 #ifdef MFS 641 if (mfs) { 642 struct mfs_args args; 643 644 switch (pid = fork()) { 645 case -1: 646 perror("mfs"); 647 exit(10); 648 case 0: 649 (void)snprintf(mountfromname, sizeof(mountfromname), 650 "mfs:%d", getpid()); 651 break; 652 default: 653 (void)snprintf(mountfromname, sizeof(mountfromname), 654 "mfs:%d", pid); 655 for (;;) { 656 /* 657 * spin until the mount succeeds 658 * or the child exits 659 */ 660 usleep(1); 661 662 /* 663 * XXX Here is a race condition: another process 664 * can mount a filesystem which hides our 665 * ramdisk before we see the success. 666 */ 667 if (statfs(argv[1], &sf) < 0) 668 err(88, "statfs %s", argv[1]); 669 if (!strcmp(sf.f_mntfromname, mountfromname) && 670 !strncmp(sf.f_mntonname, argv[1], 671 MNAMELEN) && 672 !strcmp(sf.f_fstypename, "mfs")) 673 exit(0); 674 675 res = waitpid(pid, &status, WNOHANG); 676 if (res == -1) 677 err(11, "waitpid"); 678 if (res != pid) 679 continue; 680 if (WIFEXITED(status)) { 681 if (WEXITSTATUS(status) == 0) 682 exit(0); 683 errx(1, "%s: mount: %s", argv[1], 684 strerror(WEXITSTATUS(status))); 685 } else 686 errx(11, "abnormal termination"); 687 } 688 /* NOTREACHED */ 689 } 690 691 (void) setsid(); 692 (void) close(0); 693 (void) close(1); 694 (void) close(2); 695 (void) chdir("/"); 696 697 args.fspec = mountfromname; 698 args.export.ex_root = -2; 699 if (mntflags & MNT_RDONLY) 700 args.export.ex_flags = MNT_EXRDONLY; 701 else 702 args.export.ex_flags = 0; 703 args.base = membase; 704 args.size = fssize * sectorsize; 705 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) 706 exit(errno); /* parent prints message */ 707 } 708 #endif 709 exit(0); 710 } 711 712 #ifdef COMPAT 713 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 714 #else 715 const char lmsg[] = "%s: can't read disk label"; 716 #endif 717 718 static struct disklabel * 719 getdisklabel(char *s, volatile int fd) 720 /* XXX why is fs volatile?! */ 721 { 722 static struct disklabel lab; 723 724 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 725 #ifdef COMPAT 726 if (disktype) { 727 struct disklabel *lp; 728 729 unlabeled++; 730 lp = getdiskbyname(disktype); 731 if (lp == NULL) 732 errx(1, "%s: unknown disk type", disktype); 733 return (lp); 734 } 735 #endif 736 warn("ioctl (GDINFO)"); 737 errx(1, lmsg, s); 738 } 739 return (&lab); 740 } 741 742 static void 743 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 744 /* XXX why is fd volatile?! */ 745 { 746 #ifdef COMPAT 747 if (unlabeled) 748 return; 749 #endif 750 lp->d_checksum = 0; 751 lp->d_checksum = dkcksum(lp); 752 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 753 warn("ioctl (WDINFO)"); 754 errx(1, "%s: can't rewrite disk label", s); 755 } 756 #if __vax__ 757 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 758 int i; 759 int cfd; 760 daddr_t alt; 761 char specname[64]; 762 char blk[1024]; 763 char *cp; 764 765 /* 766 * Make name for 'c' partition. 767 */ 768 strcpy(specname, s); 769 cp = specname + strlen(specname) - 1; 770 if (!isdigit(*cp)) 771 *cp = 'c'; 772 cfd = open(specname, O_WRONLY); 773 if (cfd < 0) 774 err(1, "%s: open", specname); 775 memset(blk, 0, sizeof(blk)); 776 *(struct disklabel *)(blk + LABELOFFSET) = *lp; 777 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 778 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 779 off_t offset; 780 781 offset = alt + i; 782 offset *= lp->d_secsize; 783 if (lseek(cfd, offset, SEEK_SET) == -1) 784 err(1, "lseek to badsector area: "); 785 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 786 warn("alternate label %d write", i/2); 787 } 788 close(cfd); 789 } 790 #endif 791 } 792 793 static int 794 strsuftoi(const char *desc, const char *arg, int min, int max) 795 { 796 long long result; 797 char *ep; 798 799 errno = 0; 800 result = strtoll(arg, &ep, 10); 801 if (ep[0] != '\0' && ep[1] != '\0') 802 errx(1, "%s `%s' is not a valid number.", desc, arg); 803 switch (tolower((unsigned char)ep[0])) { 804 case '\0': 805 case 'b': 806 break; 807 case 'k': 808 result <<= 10; 809 break; 810 case 'm': 811 result <<= 20; 812 break; 813 case 'g': 814 result <<= 30; 815 break; 816 default: 817 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 818 } 819 if (result < min) 820 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 821 desc, arg, result, min); 822 if (result > max) 823 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 824 desc, arg, result, max); 825 return ((int)result); 826 } 827 828 static void 829 usage(void) 830 { 831 832 if (mfs) { 833 fprintf(stderr, 834 "usage: %s [ fsoptions ] special-device mount-point\n", 835 getprogname()); 836 } else 837 fprintf(stderr, 838 "usage: %s [ fsoptions ] special-device%s\n", 839 getprogname(), 840 #ifdef COMPAT 841 " [device-type]"); 842 #else 843 ""); 844 #endif 845 fprintf(stderr, "where fsoptions are:\n"); 846 if (!mfs) { 847 fprintf(stderr, 848 "\t-B byteorder\tbyte order (`be' or `le')\n"); 849 fprintf(stderr, 850 "\t-F\t\tcreate file system image in regular file\n"); 851 } 852 fprintf(stderr, "\t-N\t\tdo not create file system, " 853 "just print out parameters\n"); 854 if (!mfs) { 855 fprintf(stderr, 856 "\t-O\t\tcreate a 4.3BSD format filesystem\n"); 857 fprintf(stderr, 858 "\t-S secsize\tsector size\n"); 859 } 860 #ifdef COMPAT 861 if (!mfs) 862 fprintf(stderr, 863 "\t-T disktype\tdisk type\n"); 864 #endif 865 if (!mfs) 866 fprintf(stderr, 867 "\t-Z\t\tpre-zero the image file (with -F)\n"); 868 fprintf(stderr, "\t-a maxcontig\tmaximum contiguous blocks\n"); 869 fprintf(stderr, "\t-b bsize\tblock size\n"); 870 fprintf(stderr, "\t-c cpg\t\tcylinders/group\n"); 871 fprintf(stderr, "\t-d rotdelay\trotational delay between " 872 "contiguous blocks\n"); 873 fprintf(stderr, "\t-e maxbpg\tmaximum blocks per file " 874 "in a cylinder group\n"); 875 fprintf(stderr, "\t-f fsize\tfragment size\n"); 876 fprintf(stderr, "\t-g avgfilesize\taverage file size\n"); 877 fprintf(stderr, "\t-h avgfpdir\taverage files per directory\n"); 878 fprintf(stderr, "\t-i density\tnumber of bytes per inode\n"); 879 if (!mfs) { 880 fprintf(stderr, 881 "\t-k trackskew\tsector 0 skew, per track\n"); 882 fprintf(stderr, 883 "\t-l interleave\thardware sector interleave\n"); 884 } 885 fprintf(stderr, "\t-m minfree\tminimum free space %%\n"); 886 if (!mfs) 887 fprintf(stderr, 888 "\t-n nrpos\tnumber of distinguished " 889 "rotational positions\n"); 890 fprintf(stderr, "\t-o optim\toptimization preference " 891 "(`space' or `time')\n"); 892 if (!mfs) 893 fprintf(stderr, 894 "\t-p trackspares\tspare sectors per track\n"); 895 fprintf(stderr, "\t-s fssize\tfile system size (sectors)\n"); 896 if (!mfs) { 897 fprintf(stderr, 898 "\t-r rpm\t\trevolutions/minute\n"); 899 fprintf(stderr, 900 "\t-t ntracks\ttracks/cylinder\n"); 901 fprintf(stderr, 902 "\t-u nsectors\tsectors/track\n"); 903 fprintf(stderr, 904 "\t-x cylspares\tspare sectors per cylinder\n"); 905 } 906 exit(1); 907 } 908
Indexes created Mon Sep 29 03:10:08 GMT 2025