newfs.c revision 1.46
1 /* $NetBSD: newfs.c,v 1.46 2001/08/30 14:37:26 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 1.46 2001/08/30 14:37:26 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 fsize = 0; /* fragment size */ 172 int bsize = 0; /* block size */ 173 int cpg = DESCPG; /* cylinders/cylinder group */ 174 int cpgflg; /* cylinders/cylinder group flag was given */ 175 int minfree = MINFREE; /* free space threshold */ 176 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 177 int density; /* number of bytes per inode */ 178 int maxcontig = 0; /* max contiguous blocks to allocate */ 179 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 180 int maxbpg; /* maximum blocks per file in a cyl group */ 181 int nrpos = NRPOS; /* # of distinguished rotational positions */ 182 int bbsize = BBSIZE; /* boot block size */ 183 int sbsize = SBSIZE; /* superblock size */ 184 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 185 u_long memleft; /* virtual memory available */ 186 caddr_t membase; /* start address of memory based filesystem */ 187 int needswap; /* Filesystem not in native byte order */ 188 #ifdef COMPAT 189 char *disktype; 190 int unlabeled; 191 #endif 192 193 char device[MAXPATHLEN]; 194 195 int 196 main(int argc, char *argv[]) 197 { 198 struct partition *pp; 199 struct disklabel *lp; 200 struct disklabel mfsfakelabel; 201 struct partition oldpartition; 202 struct stat st; 203 struct statfs *mp; 204 int ch, fsi, fso, len, maxpartitions, n, Fflag, Zflag; 205 char *cp, *endp, *s1, *s2, *special; 206 const char *opstring; 207 long long llsize; 208 #ifdef MFS 209 char mountfromname[100]; 210 pid_t pid, res; 211 struct statfs sf; 212 int status; 213 #endif 214 215 cp = NULL; 216 fsi = fso = -1; 217 Fflag = Zflag = 0; 218 if (strstr(getprogname(), "mfs")) { 219 mfs = 1; 220 Nflag++; 221 } 222 223 maxpartitions = getmaxpartitions(); 224 if (maxpartitions > 26) 225 errx(1, "insane maxpartitions value %d", maxpartitions); 226 227 opstring = mfs ? 228 "NT:a:b:c:d:e:f:i:m:o:s:" : 229 "B:FNOS:T:Za:b:c:d:e:f:i:k:l:m:n:o:p:r:s:t:u:x:"; 230 while ((ch = getopt(argc, argv, opstring)) != -1) 231 switch (ch) { 232 case 'B': 233 if (strcmp(optarg, "be") == 0) { 234 #if BYTE_ORDER == LITTLE_ENDIAN 235 needswap = 1; 236 #endif 237 } else if (strcmp(optarg, "le") == 0) { 238 #if BYTE_ORDER == BIG_ENDIAN 239 needswap = 1; 240 #endif 241 } else 242 usage(); 243 break; 244 case 'F': 245 Fflag = 1; 246 break; 247 case 'N': 248 Nflag = 1; 249 break; 250 case 'O': 251 Oflag = 1; 252 break; 253 case 'S': 254 sectorsize = strsuftoi("sector size", 255 optarg, 1, INT_MAX); 256 break; 257 #ifdef COMPAT 258 case 'T': 259 disktype = optarg; 260 break; 261 #endif 262 case 'Z': 263 Zflag = 1; 264 break; 265 case 'a': 266 maxcontig = strsuftoi("maximum contiguous blocks", 267 optarg, 1, INT_MAX); 268 break; 269 case 'b': 270 bsize = strsuftoi("block size", 271 optarg, MINBSIZE, INT_MAX); 272 break; 273 case 'c': 274 cpg = strsuftoi("cylinders per group", 275 optarg, 1, INT_MAX); 276 cpgflg++; 277 break; 278 case 'd': 279 rotdelay = strsuftoi("rotational delay", 280 optarg, 0, INT_MAX); 281 break; 282 case 'e': 283 maxbpg = strsuftoi( 284 "blocks per file in a cylinder group", 285 optarg, 1, INT_MAX); 286 break; 287 case 'f': 288 fsize = strsuftoi("fragment size", 289 optarg, 1, INT_MAX); 290 break; 291 case 'i': 292 density = strsuftoi("bytes per inode", 293 optarg, 1, INT_MAX); 294 break; 295 case 'k': 296 trackskew = strsuftoi("track skew", 297 optarg, 0, INT_MAX); 298 break; 299 case 'l': 300 interleave = strsuftoi("interleave", 301 optarg, 1, INT_MAX); 302 break; 303 case 'm': 304 minfree = strsuftoi("free space %", 305 optarg, 0, 99); 306 break; 307 case 'n': 308 nrpos = strsuftoi("rotational layout count", 309 optarg, 1, INT_MAX); 310 break; 311 case 'o': 312 if (mfs) 313 getmntopts(optarg, mopts, &mntflags, 0); 314 else { 315 if (strcmp(optarg, "space") == 0) 316 opt = FS_OPTSPACE; 317 else if (strcmp(optarg, "time") == 0) 318 opt = FS_OPTTIME; 319 else 320 errx(1, "%s %s", 321 "unknown optimization preference: ", 322 "use `space' or `time'."); 323 } 324 break; 325 case 'p': 326 trackspares = strsuftoi("spare sectors per track", 327 optarg, 0, INT_MAX); 328 break; 329 case 'r': 330 rpm = strsuftoi("revolutions per minute", 331 optarg, 1, INT_MAX); 332 break; 333 case 's': 334 llsize = strtoll(optarg, &endp, 10); 335 if (endp[0] != '\0' && endp[1] != '\0') 336 llsize = -1; 337 else { 338 int ssiz; 339 340 ssiz = (sectorsize ? sectorsize : DFL_SECSIZE); 341 switch (tolower((unsigned char)endp[0])) { 342 case 'b': 343 llsize /= ssiz; 344 break; 345 case 'k': 346 llsize *= 1024 / ssiz; 347 break; 348 case 'm': 349 llsize *= 1024 * 1024 / ssiz; 350 break; 351 case 'g': 352 llsize *= 1024 * 1024 * 1024 / ssiz; 353 break; 354 case '\0': 355 case 's': 356 break; 357 default: 358 llsize = -1; 359 } 360 } 361 if (llsize > INT_MAX) 362 errx(1, "file system size `%s' is too large.", 363 optarg); 364 if (llsize <= 0) 365 errx(1, 366 "`%s' is not a valid number for file system size.", 367 optarg); 368 fssize = (int)llsize; 369 break; 370 case 't': 371 ntracks = strsuftoi("total tracks", 372 optarg, 1, INT_MAX); 373 break; 374 case 'u': 375 nsectors = strsuftoi("sectors per track", 376 optarg, 1, INT_MAX); 377 break; 378 case 'x': 379 cylspares = strsuftoi("spare sectors per cylinder", 380 optarg, 0, INT_MAX); 381 break; 382 case '?': 383 default: 384 usage(); 385 } 386 argc -= optind; 387 argv += optind; 388 389 if (argc != 2 && (mfs || argc != 1)) 390 usage(); 391 392 special = argv[0]; 393 if ((mfs && !strcmp(special, "swap")) || Fflag) { 394 /* 395 * it's an MFS mounted on "swap" or a file system image; 396 * fake up a label. XXX 397 */ 398 if (!sectorsize) 399 sectorsize = DFL_SECSIZE; 400 401 if (Fflag && (stat(special, &st) != -1 && !S_ISREG(st.st_mode))) 402 errx(1, "%s is not a regular file", special); 403 if (Fflag && !Nflag) { /* creating image in a regular file */ 404 if (fssize == 0) 405 errx(1, "need to specify size when using -F"); 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 if ((fsi = dup(fso)) == -1) 410 err(1, "can't dup(2) image fd"); 411 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 412 err(1, "can't resize %s to %d", 413 special, fssize); 414 415 if (Zflag) { /* pre-zero the file */ 416 char *buf; 417 int bufsize, i; 418 off_t bufrem; 419 struct statfs sfs; 420 421 if (fstatfs(fso, &sfs) == -1) { 422 warn("can't fstatfs `%s'", special); 423 bufsize = 8192; 424 } else 425 bufsize = sfs.f_iosize; 426 427 if ((buf = calloc(1, bufsize)) == NULL) 428 err(1, "can't malloc buffer of %d", 429 bufsize); 430 bufrem = fssize * sectorsize; 431 printf( 432 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 433 special, (long long)bufrem, bufsize); 434 while (bufrem > 0) { 435 i = write(fso, buf, 436 MIN(bufsize, bufrem)); 437 if (i == -1) 438 err(1, "writing image"); 439 bufrem -= i; 440 } 441 } 442 443 } 444 445 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 446 mfsfakelabel.d_secsize = sectorsize; 447 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 448 mfsfakelabel.d_ntracks = 16; 449 mfsfakelabel.d_ncylinders = 16; 450 mfsfakelabel.d_secpercyl = 451 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 452 mfsfakelabel.d_secperunit = 453 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 454 mfsfakelabel.d_rpm = 3600; 455 mfsfakelabel.d_interleave = 1; 456 mfsfakelabel.d_npartitions = 1; 457 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 458 mfsfakelabel.d_partitions[0].p_fsize = 1024; 459 mfsfakelabel.d_partitions[0].p_frag = 8; 460 mfsfakelabel.d_partitions[0].p_cpg = 16; 461 462 lp = &mfsfakelabel; 463 pp = &mfsfakelabel.d_partitions[0]; 464 465 goto havelabel; 466 } 467 cp = strrchr(special, '/'); 468 if (cp == NULL) { 469 /* 470 * No path prefix; try /dev/r%s then /dev/%s. 471 */ 472 (void)snprintf(device, sizeof(device), "%sr%s", 473 _PATH_DEV, special); 474 if (stat(device, &st) == -1) 475 (void)snprintf(device, sizeof(device), "%s%s", 476 _PATH_DEV, special); 477 special = device; 478 } 479 if (Nflag) { 480 fso = -1; 481 } else { 482 fso = open(special, O_WRONLY); 483 if (fso < 0) 484 err(1, "%s: open", special); 485 486 /* Bail if target special is mounted */ 487 n = getmntinfo(&mp, MNT_NOWAIT); 488 if (n == 0) 489 err(1, "%s: getmntinfo", special); 490 491 len = sizeof(_PATH_DEV) - 1; 492 s1 = special; 493 if (strncmp(_PATH_DEV, s1, len) == 0) 494 s1 += len; 495 496 while (--n >= 0) { 497 s2 = mp->f_mntfromname; 498 if (strncmp(_PATH_DEV, s2, len) == 0) { 499 s2 += len - 1; 500 *s2 = 'r'; 501 } 502 if (strcmp(s1, s2) == 0 || strcmp(s1, &s2[1]) == 0) 503 errx(1, "%s is mounted on %s", 504 special, mp->f_mntonname); 505 ++mp; 506 } 507 } 508 if (mfs && disktype != NULL) { 509 lp = (struct disklabel *)getdiskbyname(disktype); 510 if (lp == NULL) 511 errx(1, "%s: unknown disk type", disktype); 512 pp = &lp->d_partitions[1]; 513 } else { 514 fsi = open(special, O_RDONLY); 515 if (fsi < 0) 516 err(1, "%s: open", special); 517 if (fstat(fsi, &st) < 0) 518 err(1, "%s: fstat", special); 519 if (!S_ISCHR(st.st_mode) && !mfs) 520 warnx("%s: not a character-special device", special); 521 cp = strchr(argv[0], '\0') - 1; 522 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 523 && !isdigit(*cp))) 524 errx(1, "can't figure out file system partition"); 525 #ifdef COMPAT 526 if (!mfs && disktype == NULL) 527 disktype = argv[1]; 528 #endif 529 lp = getdisklabel(special, fsi); 530 if (isdigit(*cp)) 531 pp = &lp->d_partitions[0]; 532 else 533 pp = &lp->d_partitions[*cp - 'a']; 534 if (pp->p_size == 0) 535 errx(1, "`%c' partition is unavailable", *cp); 536 if (pp->p_fstype == FS_BOOT) 537 errx(1, "`%c' partition overlaps boot program", *cp); 538 } 539 540 havelabel: 541 if (fssize == 0) 542 fssize = pp->p_size; 543 if (fssize > pp->p_size && !mfs && !Fflag) 544 errx(1, "maximum file system size on the `%c' partition is %d", 545 *cp, pp->p_size); 546 if (rpm == 0) { 547 rpm = lp->d_rpm; 548 if (rpm <= 0) 549 rpm = 3600; 550 } 551 if (ntracks == 0) { 552 ntracks = lp->d_ntracks; 553 if (ntracks <= 0) 554 errx(1, "no default #tracks"); 555 } 556 if (nsectors == 0) { 557 nsectors = lp->d_nsectors; 558 if (nsectors <= 0) 559 errx(1, "no default #sectors/track"); 560 } 561 if (sectorsize == 0) { 562 sectorsize = lp->d_secsize; 563 if (sectorsize <= 0) 564 errx(1, "no default sector size"); 565 } 566 if (trackskew == -1) { 567 trackskew = lp->d_trackskew; 568 if (trackskew < 0) 569 trackskew = 0; 570 } 571 if (interleave == 0) { 572 interleave = lp->d_interleave; 573 if (interleave <= 0) 574 interleave = 1; 575 } 576 if (fsize == 0) { 577 fsize = pp->p_fsize; 578 if (fsize <= 0) 579 fsize = MAX(DFL_FRAGSIZE, lp->d_secsize); 580 } 581 if (bsize == 0) { 582 bsize = pp->p_frag * pp->p_fsize; 583 if (bsize <= 0) 584 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 585 } 586 if (cpgflg == 0) { 587 if (pp->p_cpg != 0) 588 cpg = pp->p_cpg; 589 } 590 /* 591 * Maxcontig sets the default for the maximum number of blocks 592 * that may be allocated sequentially. With filesystem clustering 593 * it is possible to allocate contiguous blocks up to the maximum 594 * transfer size permitted by the controller or buffering. 595 */ 596 if (maxcontig == 0) 597 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 598 if (density == 0) 599 density = NFPI * fsize; 600 if (minfree < MINFREE && opt != FS_OPTSPACE) { 601 warnx("%s %s %d%%", "Warning: changing optimization to space", 602 "because minfree is less than", MINFREE); 603 opt = FS_OPTSPACE; 604 } 605 if (trackspares == -1) { 606 trackspares = lp->d_sparespertrack; 607 if (trackspares < 0) 608 trackspares = 0; 609 } 610 nphyssectors = nsectors + trackspares; 611 if (cylspares == -1) { 612 cylspares = lp->d_sparespercyl; 613 if (cylspares < 0) 614 cylspares = 0; 615 } 616 secpercyl = nsectors * ntracks - cylspares; 617 if (secpercyl != lp->d_secpercyl) 618 warnx("%s (%d) %s (%u)\n", 619 "Warning: calculated sectors per cylinder", secpercyl, 620 "disagrees with disk label", lp->d_secpercyl); 621 if (maxbpg == 0) 622 maxbpg = MAXBLKPG(bsize); 623 #ifdef notdef /* label may be 0 if faked up by kernel */ 624 bbsize = lp->d_bbsize; 625 sbsize = lp->d_sbsize; 626 #endif 627 oldpartition = *pp; 628 mkfs(pp, special, fsi, fso); 629 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 630 rewritelabel(special, fso, lp); 631 if (!Nflag) 632 close(fso); 633 close(fsi); 634 #ifdef MFS 635 if (mfs) { 636 struct mfs_args args; 637 638 switch (pid = fork()) { 639 case -1: 640 perror("mfs"); 641 exit(10); 642 case 0: 643 (void)snprintf(mountfromname, sizeof(mountfromname), 644 "mfs:%d", getpid()); 645 break; 646 default: 647 (void)snprintf(mountfromname, sizeof(mountfromname), 648 "mfs:%d", pid); 649 for (;;) { 650 /* 651 * spin until the mount succeeds 652 * or the child exits 653 */ 654 usleep(1); 655 656 /* 657 * XXX Here is a race condition: another process 658 * can mount a filesystem which hides our 659 * ramdisk before we see the success. 660 */ 661 if (statfs(argv[1], &sf) < 0) 662 err(88, "statfs %s", argv[1]); 663 if (!strcmp(sf.f_mntfromname, mountfromname) && 664 !strncmp(sf.f_mntonname, argv[1], 665 MNAMELEN) && 666 !strcmp(sf.f_fstypename, "mfs")) 667 exit(0); 668 669 res = waitpid(pid, &status, WNOHANG); 670 if (res == -1) 671 err(11, "waitpid"); 672 if (res != pid) 673 continue; 674 if (WIFEXITED(status)) { 675 if (WEXITSTATUS(status) == 0) 676 exit(0); 677 errx(1, "%s: mount: %s", argv[1], 678 strerror(WEXITSTATUS(status))); 679 } else 680 errx(11, "abnormal termination"); 681 } 682 /* NOTREACHED */ 683 } 684 685 (void) setsid(); 686 (void) close(0); 687 (void) close(1); 688 (void) close(2); 689 (void) chdir("/"); 690 691 args.fspec = mountfromname; 692 args.export.ex_root = -2; 693 if (mntflags & MNT_RDONLY) 694 args.export.ex_flags = MNT_EXRDONLY; 695 else 696 args.export.ex_flags = 0; 697 args.base = membase; 698 args.size = fssize * sectorsize; 699 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) 700 exit(errno); /* parent prints message */ 701 } 702 #endif 703 exit(0); 704 } 705 706 #ifdef COMPAT 707 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 708 #else 709 const char lmsg[] = "%s: can't read disk label"; 710 #endif 711 712 static struct disklabel * 713 getdisklabel(char *s, volatile int fd) 714 /* XXX why is fs volatile?! */ 715 { 716 static struct disklabel lab; 717 718 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 719 #ifdef COMPAT 720 if (disktype) { 721 struct disklabel *lp; 722 723 unlabeled++; 724 lp = getdiskbyname(disktype); 725 if (lp == NULL) 726 errx(1, "%s: unknown disk type", disktype); 727 return (lp); 728 } 729 #endif 730 warn("ioctl (GDINFO)"); 731 errx(1, lmsg, s); 732 } 733 return (&lab); 734 } 735 736 static void 737 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 738 /* XXX why is fd volatile?! */ 739 { 740 #ifdef COMPAT 741 if (unlabeled) 742 return; 743 #endif 744 lp->d_checksum = 0; 745 lp->d_checksum = dkcksum(lp); 746 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 747 warn("ioctl (WDINFO)"); 748 errx(1, "%s: can't rewrite disk label", s); 749 } 750 #if __vax__ 751 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 752 int i; 753 int cfd; 754 daddr_t alt; 755 char specname[64]; 756 char blk[1024]; 757 char *cp; 758 759 /* 760 * Make name for 'c' partition. 761 */ 762 strcpy(specname, s); 763 cp = specname + strlen(specname) - 1; 764 if (!isdigit(*cp)) 765 *cp = 'c'; 766 cfd = open(specname, O_WRONLY); 767 if (cfd < 0) 768 err(1, "%s: open", specname); 769 memset(blk, 0, sizeof(blk)); 770 *(struct disklabel *)(blk + LABELOFFSET) = *lp; 771 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 772 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 773 off_t offset; 774 775 offset = alt + i; 776 offset *= lp->d_secsize; 777 if (lseek(cfd, offset, SEEK_SET) == -1) 778 err(1, "lseek to badsector area: "); 779 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 780 warn("alternate label %d write", i/2); 781 } 782 close(cfd); 783 } 784 #endif 785 } 786 787 static int 788 strsuftoi(const char *desc, const char *arg, int min, int max) 789 { 790 long long result; 791 char *ep; 792 793 errno = 0; 794 result = strtoll(arg, &ep, 10); 795 if (ep[0] != '\0' && ep[1] != '\0') 796 errx(1, "%s `%s' is not a valid number.", desc, arg); 797 switch (tolower((unsigned char)ep[0])) { 798 case '\0': 799 case 'b': 800 break; 801 case 'k': 802 result <<= 10; 803 break; 804 case 'm': 805 result <<= 20; 806 break; 807 case 'g': 808 result <<= 30; 809 break; 810 default: 811 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 812 } 813 if (result < min) 814 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 815 desc, arg, result, min); 816 if (result > max) 817 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 818 desc, arg, result, max); 819 return ((int)result); 820 } 821 822 static void 823 usage(void) 824 { 825 826 if (mfs) { 827 fprintf(stderr, 828 "usage: %s [ fsoptions ] special-device mount-point\n", 829 getprogname()); 830 } else 831 fprintf(stderr, 832 "usage: %s [ fsoptions ] special-device%s\n", 833 getprogname(), 834 #ifdef COMPAT 835 " [device-type]"); 836 #else 837 ""); 838 #endif 839 fprintf(stderr, "where fsoptions are:\n"); 840 if (!mfs) { 841 fprintf(stderr, 842 "\t-B byteorder\tbyte order (`be' or `le')\n"); 843 fprintf(stderr, 844 "\t-F\t\tcreate file system image in regular file\n"); 845 } 846 fprintf(stderr, "\t-N\t\tdo not create file system, " 847 "just print out parameters\n"); 848 if (!mfs) { 849 fprintf(stderr, 850 "\t-O\t\tcreate a 4.3BSD format filesystem\n"); 851 fprintf(stderr, 852 "\t-S secsize\tsector size\n"); 853 } 854 #ifdef COMPAT 855 fprintf(stderr, "\t-T disktype\tdisk type\n"); 856 #endif 857 if (!mfs) 858 fprintf(stderr, 859 "\t-Z\t\tpre-zero the image file (with -F)\n"); 860 fprintf(stderr, "\t-a maxcontig\tmaximum contiguous blocks\n"); 861 fprintf(stderr, "\t-b bsize\tblock size\n"); 862 fprintf(stderr, "\t-c cpg\t\tcylinders/group\n"); 863 fprintf(stderr, "\t-d rotdelay\trotational delay between " 864 "contiguous blocks\n"); 865 fprintf(stderr, "\t-e maxbpg\tmaximum blocks per file " 866 "in a cylinder group\n"); 867 fprintf(stderr, "\t-f fsize\tfragment size\n"); 868 fprintf(stderr, "\t-i density\tnumber of bytes per inode\n"); 869 if (!mfs) { 870 fprintf(stderr, 871 "\t-k trackskew\tsector 0 skew, per track\n"); 872 fprintf(stderr, 873 "\t-l interleave\thardware sector interleave\n"); 874 } 875 fprintf(stderr, "\t-m minfree\tminimum free space %%\n"); 876 if (!mfs) 877 fprintf(stderr, 878 "\t-n nrpos\tnumber of distinguished " 879 "rotational positions\n"); 880 fprintf(stderr, "\t-o optim\toptimization preference " 881 "(`space' or `time')\n"); 882 if (!mfs) 883 fprintf(stderr, 884 "\t-p trackspares\tspare sectors per track\n"); 885 fprintf(stderr, "\t-s fssize\tfile system size (sectors)\n"); 886 if (!mfs) { 887 fprintf(stderr, 888 "\t-r rpm\t\trevolutions/minute\n"); 889 fprintf(stderr, 890 "\t-t ntracks\ttracks/cylinder\n"); 891 fprintf(stderr, 892 "\t-u nsectors\tsectors/track\n"); 893 fprintf(stderr, 894 "\t-x cylspares\tspare sectors per cylinder\n"); 895 } 896 exit(1); 897 } 898
Indexes created Wed Oct 22 06:10:02 GMT 2025