newfs.c revision 1.63
1 /* $NetBSD: newfs.c,v 1.63 2003/01/24 21:55:12 fvdl 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 1.63 2003/01/24 21:55:12 fvdl 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 <err.h> 69 #include <errno.h> 70 #include <grp.h> 71 #include <paths.h> 72 #include <pwd.h> 73 #include <signal.h> 74 #include <stdio.h> 75 #include <stdlib.h> 76 #include <string.h> 77 #include <syslog.h> 78 #include <unistd.h> 79 #include <util.h> 80 81 #include "mntopts.h" 82 #include "dkcksum.h" 83 #include "extern.h" 84 85 struct mntopt mopts[] = { 86 MOPT_STDOPTS, 87 MOPT_ASYNC, 88 MOPT_UPDATE, 89 MOPT_GETARGS, 90 MOPT_NOATIME, 91 { NULL }, 92 }; 93 94 static struct disklabel *getdisklabel(char *, int); 95 static void rewritelabel(char *, int, struct disklabel *); 96 static gid_t mfs_group(const char *); 97 static uid_t mfs_user(const char *); 98 static int strsuftoi(const char *, const char *, int, int); 99 static void usage(void); 100 int main(int, char *[]); 101 102 #define COMPAT /* allow non-labeled disks */ 103 104 /* 105 * The following two constants set the default block and fragment sizes. 106 * Both constants must be a power of 2 and meet the following constraints: 107 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 108 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 109 * DESBLKSIZE / DESFRAGSIZE <= 8 110 */ 111 /* 112 * For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, 113 * otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use 114 * L_DFL_*. 115 */ 116 #define SMALL_FSSIZE (20*1024*2) 117 #define S_DFL_FRAGSIZE 512 118 #define S_DFL_BLKSIZE 4096 119 #define MEDIUM_FSSIZE (1000*1024*2) 120 #define M_DFL_FRAGSIZE 1024 121 #define M_DFL_BLKSIZE 8192 122 #define L_DFL_FRAGSIZE 2048 123 #define L_DFL_BLKSIZE 16384 124 125 /* 126 * Default sector size. 127 */ 128 #define DFL_SECSIZE 512 129 130 /* 131 * Cylinder groups may have up to many cylinders. The actual 132 * number used depends upon how much information can be stored 133 * on a single cylinder. The default is to use 16 cylinders 134 * per group. 135 */ 136 #define DESCPG 65536 /* desired fs_cpg ("infinity") */ 137 138 /* 139 * ROTDELAY gives the minimum number of milliseconds to initiate 140 * another disk transfer on the same cylinder. It is used in 141 * determining the rotationally optimal layout for disk blocks 142 * within a file; the default of fs_rotdelay is 0ms. 143 */ 144 #define ROTDELAY 0 145 146 /* 147 * MAXBLKPG determines the maximum number of data blocks which are 148 * placed in a single cylinder group. The default is one indirect 149 * block worth of data blocks. 150 */ 151 /* XXX ondisk32 */ 152 #define MAXBLKPG(bsize) ((bsize) / sizeof(int32_t)) 153 154 /* 155 * Each file system has a number of inodes statically allocated. 156 * We allocate one inode slot per NFPI fragments, expecting this 157 * to be far more than we will ever need. 158 */ 159 #define NFPI 4 160 161 /* 162 * For each cylinder we keep track of the availability of blocks at different 163 * rotational positions, so that we can lay out the data to be picked 164 * up with minimum rotational latency. NRPOS is the default number of 165 * rotational positions that we distinguish. With NRPOS of 8 the resolution 166 * of our summary information is 2ms for a typical 3600 rpm drive. Caching 167 * and zoning pretty much defeats rotational optimization, so we now use a 168 * default of 1. 169 */ 170 #define NRPOS 1 /* number distinct rotational positions */ 171 172 173 int mfs; /* run as the memory based filesystem */ 174 int Nflag; /* run without writing file system */ 175 int Oflag; /* format as an 4.3BSD file system */ 176 int fssize; /* file system size */ 177 int ntracks; /* # tracks/cylinder */ 178 int nsectors; /* # sectors/track */ 179 int nphyssectors; /* # sectors/track including spares */ 180 int secpercyl; /* sectors per cylinder */ 181 int trackspares = -1; /* spare sectors per track */ 182 int cylspares = -1; /* spare sectors per cylinder */ 183 int sectorsize; /* bytes/sector */ 184 int rpm; /* revolutions/minute of drive */ 185 int interleave; /* hardware sector interleave */ 186 int trackskew = -1; /* sector 0 skew, per track */ 187 int fsize = 0; /* fragment size */ 188 int bsize = 0; /* block size */ 189 int cpg = DESCPG; /* cylinders/cylinder group */ 190 int cpgflg; /* cylinders/cylinder group flag was given */ 191 int minfree = MINFREE; /* free space threshold */ 192 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 193 int density; /* number of bytes per inode */ 194 int maxcontig = 0; /* max contiguous blocks to allocate */ 195 int rotdelay = ROTDELAY; /* rotational delay between blocks */ 196 int maxbpg; /* maximum blocks per file in a cyl group */ 197 int nrpos = NRPOS; /* # of distinguished rotational positions */ 198 int avgfilesize = AVFILESIZ;/* expected average file size */ 199 int avgfpdir = AFPDIR; /* expected number of files per directory */ 200 int bbsize = BBSIZE; /* boot block size */ 201 int sbsize = SBSIZE; /* superblock size */ 202 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 203 u_long memleft; /* virtual memory available */ 204 caddr_t membase; /* start address of memory based filesystem */ 205 int needswap; /* Filesystem not in native byte order */ 206 #ifdef COMPAT 207 char *disktype; 208 int unlabeled; 209 #endif 210 char *appleufs_volname = 0; /* Apple UFS volume name */ 211 int isappleufs = 0; 212 213 char device[MAXPATHLEN]; 214 215 int 216 main(int argc, char *argv[]) 217 { 218 struct partition *pp; 219 struct disklabel *lp; 220 struct disklabel mfsfakelabel; 221 struct partition oldpartition; 222 struct statfs *mp; 223 int ch, fsi, fso, len, maxpartitions, n, Fflag, Iflag, Zflag; 224 char *cp, *endp, *s1, *s2, *special; 225 const char *opstring; 226 long long llsize; 227 int dfl_fragsize, dfl_blksize; 228 #ifdef MFS 229 char mountfromname[100]; 230 pid_t pid, res; 231 struct statfs sf; 232 int status; 233 #endif 234 mode_t mfsmode; 235 uid_t mfsuid; 236 gid_t mfsgid; 237 238 cp = NULL; 239 fsi = fso = -1; 240 Fflag = Iflag = Zflag = 0; 241 if (strstr(getprogname(), "mfs")) { 242 mfs = 1; 243 mfsmode = 01777; /* default mode for a /tmp-type directory */ 244 mfsuid = 0; /* user root */ 245 mfsgid = 0; /* group wheel */ 246 Nflag++; 247 } 248 249 maxpartitions = getmaxpartitions(); 250 if (maxpartitions > 26) 251 errx(1, "insane maxpartitions value %d", maxpartitions); 252 253 opstring = mfs ? 254 "NT:a:b:c:d:e:f:g:h:i:m:o:p:s:u:" : 255 "B:FINOS:T:Za:b:c:d:e:f:g:h:i:k:l:m:n:o:p:r:s:t:u:v:x:"; 256 while ((ch = getopt(argc, argv, opstring)) != -1) 257 switch (ch) { 258 case 'B': 259 if (strcmp(optarg, "be") == 0) { 260 #if BYTE_ORDER == LITTLE_ENDIAN 261 needswap = 1; 262 #endif 263 } else if (strcmp(optarg, "le") == 0) { 264 #if BYTE_ORDER == BIG_ENDIAN 265 needswap = 1; 266 #endif 267 } else 268 usage(); 269 break; 270 case 'F': 271 Fflag = 1; 272 break; 273 case 'I': 274 Iflag = 1; 275 break; 276 case 'N': 277 Nflag = 1; 278 break; 279 case 'O': 280 Oflag = 1; 281 break; 282 case 'S': 283 sectorsize = strsuftoi("sector size", 284 optarg, 1, INT_MAX); 285 break; 286 #ifdef COMPAT 287 case 'T': 288 disktype = optarg; 289 break; 290 #endif 291 case 'Z': 292 Zflag = 1; 293 break; 294 case 'a': 295 maxcontig = strsuftoi("maximum contiguous blocks", 296 optarg, 1, INT_MAX); 297 break; 298 case 'b': 299 bsize = strsuftoi("block size", 300 optarg, MINBSIZE, MAXBSIZE); 301 break; 302 case 'c': 303 cpg = strsuftoi("cylinders per group", 304 optarg, 1, INT_MAX); 305 cpgflg++; 306 break; 307 case 'd': 308 rotdelay = strsuftoi("rotational delay", 309 optarg, 0, INT_MAX); 310 break; 311 case 'e': 312 maxbpg = strsuftoi( 313 "blocks per file in a cylinder group", 314 optarg, 1, INT_MAX); 315 break; 316 case 'f': 317 fsize = strsuftoi("fragment size", 318 optarg, 1, MAXBSIZE); 319 break; 320 case 'g': 321 if (mfs) 322 mfsgid = mfs_group(optarg); 323 else { 324 avgfilesize = strsuftoi("average file size", 325 optarg, 1, INT_MAX); 326 } 327 break; 328 case 'h': 329 avgfpdir = strsuftoi("expected files per directory", 330 optarg, 1, INT_MAX); 331 break; 332 case 'i': 333 density = strsuftoi("bytes per inode", 334 optarg, 1, INT_MAX); 335 break; 336 case 'k': 337 trackskew = strsuftoi("track skew", 338 optarg, 0, INT_MAX); 339 break; 340 case 'l': 341 interleave = strsuftoi("interleave", 342 optarg, 1, INT_MAX); 343 break; 344 case 'm': 345 minfree = strsuftoi("free space %", 346 optarg, 0, 99); 347 break; 348 case 'n': 349 nrpos = strsuftoi("rotational layout count", 350 optarg, 1, INT_MAX); 351 break; 352 case 'o': 353 if (mfs) 354 getmntopts(optarg, mopts, &mntflags, 0); 355 else { 356 if (strcmp(optarg, "space") == 0) 357 opt = FS_OPTSPACE; 358 else if (strcmp(optarg, "time") == 0) 359 opt = FS_OPTTIME; 360 else 361 errx(1, "%s %s", 362 "unknown optimization preference: ", 363 "use `space' or `time'."); 364 } 365 break; 366 case 'p': 367 if (mfs) { 368 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 369 errx(1, "bad mode `%s'", optarg); 370 } else { 371 trackspares = strsuftoi( 372 "spare sectors per track", optarg, 0, 373 INT_MAX); 374 } 375 break; 376 case 'r': 377 rpm = strsuftoi("revolutions per minute", 378 optarg, 1, INT_MAX); 379 break; 380 case 's': 381 llsize = strtoll(optarg, &endp, 10); 382 if (endp[0] != '\0' && endp[1] != '\0') 383 llsize = -1; 384 else { 385 int ssiz; 386 387 ssiz = (sectorsize ? sectorsize : DFL_SECSIZE); 388 switch (tolower((unsigned char)endp[0])) { 389 case 'b': 390 llsize /= ssiz; 391 break; 392 case 'k': 393 llsize *= 1024 / ssiz; 394 break; 395 case 'm': 396 llsize *= 1024 * 1024 / ssiz; 397 break; 398 case 'g': 399 llsize *= 1024 * 1024 * 1024 / ssiz; 400 break; 401 case '\0': 402 case 's': 403 break; 404 default: 405 llsize = -1; 406 } 407 } 408 if (llsize > INT_MAX) 409 errx(1, "file system size `%s' is too large.", 410 optarg); 411 if (llsize <= 0) 412 errx(1, 413 "`%s' is not a valid number for file system size.", 414 optarg); 415 fssize = (int)llsize; 416 break; 417 case 't': 418 ntracks = strsuftoi("total tracks", 419 optarg, 1, INT_MAX); 420 break; 421 case 'u': 422 if (mfs) 423 mfsuid = mfs_user(optarg); 424 else { 425 nsectors = strsuftoi("sectors per track", 426 optarg, 1, INT_MAX); 427 } 428 break; 429 case 'v': 430 appleufs_volname = optarg; 431 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 432 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 433 if (appleufs_volname[0] == '\0') 434 errx(1,"Apple UFS volume name cannot be zero length"); 435 isappleufs = 1; 436 break; 437 case 'x': 438 cylspares = strsuftoi("spare sectors per cylinder", 439 optarg, 0, INT_MAX); 440 break; 441 case '?': 442 default: 443 usage(); 444 } 445 argc -= optind; 446 argv += optind; 447 if (mntflags & MNT_GETARGS) 448 goto doit; 449 450 if (argc != 2 && (mfs || argc != 1)) 451 usage(); 452 453 special = argv[0]; 454 if (Fflag || mfs) { 455 /* 456 * it's a file system image or an MFS, so fake up a label. 457 * XXX 458 */ 459 if (!sectorsize) 460 sectorsize = DFL_SECSIZE; 461 462 if (Fflag && !Nflag) { /* creating image in a regular file */ 463 if (fssize == 0) 464 errx(1, "need to specify size when using -F"); 465 fso = open(special, O_RDWR | O_CREAT | O_TRUNC, 0777); 466 if (fso == -1) 467 err(1, "can't open file %s", special); 468 if ((fsi = dup(fso)) == -1) 469 err(1, "can't dup(2) image fd"); 470 /* XXXLUKEM: only ftruncate() regular files ? */ 471 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 472 err(1, "can't resize %s to %d", 473 special, fssize); 474 475 if (Zflag) { /* pre-zero the file */ 476 char *buf; 477 int bufsize, i; 478 off_t bufrem; 479 struct statfs sfs; 480 481 if (fstatfs(fso, &sfs) == -1) { 482 warn("can't fstatfs `%s'", special); 483 bufsize = 8192; 484 } else 485 bufsize = sfs.f_iosize; 486 487 if ((buf = calloc(1, bufsize)) == NULL) 488 err(1, "can't malloc buffer of %d", 489 bufsize); 490 bufrem = fssize * sectorsize; 491 printf( 492 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 493 special, (long long)bufrem, bufsize); 494 while (bufrem > 0) { 495 i = write(fso, buf, 496 MIN(bufsize, bufrem)); 497 if (i == -1) 498 err(1, "writing image"); 499 bufrem -= i; 500 } 501 } 502 503 } 504 505 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 506 mfsfakelabel.d_secsize = sectorsize; 507 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 508 mfsfakelabel.d_ntracks = 16; 509 mfsfakelabel.d_ncylinders = 16; 510 mfsfakelabel.d_secpercyl = 511 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 512 mfsfakelabel.d_secperunit = 513 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 514 mfsfakelabel.d_rpm = 10000; 515 mfsfakelabel.d_interleave = 1; 516 mfsfakelabel.d_npartitions = 1; 517 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 518 mfsfakelabel.d_partitions[0].p_fsize = 1024; 519 mfsfakelabel.d_partitions[0].p_frag = 8; 520 mfsfakelabel.d_partitions[0].p_cpg = 16; 521 522 lp = &mfsfakelabel; 523 pp = &mfsfakelabel.d_partitions[0]; 524 } else { /* !Fflag && !mfs */ 525 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 526 special = device; 527 if (fsi < 0) 528 err(1, "%s: open for read", special); 529 530 if (Nflag) { 531 fso = -1; 532 } else { 533 fso = open(special, O_WRONLY); 534 if (fso < 0) 535 err(1, "%s: open for write", special); 536 537 /* Bail if target special is mounted */ 538 n = getmntinfo(&mp, MNT_NOWAIT); 539 if (n == 0) 540 err(1, "%s: getmntinfo", special); 541 542 len = sizeof(_PATH_DEV) - 1; 543 s1 = special; 544 if (strncmp(_PATH_DEV, s1, len) == 0) 545 s1 += len; 546 547 while (--n >= 0) { 548 s2 = mp->f_mntfromname; 549 if (strncmp(_PATH_DEV, s2, len) == 0) { 550 s2 += len - 1; 551 *s2 = 'r'; 552 } 553 if (strcmp(s1, s2) == 0 || 554 strcmp(s1, &s2[1]) == 0) 555 errx(1, "%s is mounted on %s", 556 special, mp->f_mntonname); 557 ++mp; 558 } 559 } 560 cp = strchr(argv[0], '\0') - 1; 561 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 562 && !isdigit(*cp))) 563 errx(1, "can't figure out file system partition"); 564 #ifdef COMPAT 565 if (disktype == NULL) 566 disktype = argv[1]; 567 #endif 568 lp = getdisklabel(special, fsi); 569 if (isdigit(*cp)) 570 pp = &lp->d_partitions[0]; 571 else 572 pp = &lp->d_partitions[*cp - 'a']; 573 if (pp->p_size == 0) 574 errx(1, "`%c' partition is unavailable", *cp); 575 if (pp->p_fstype == FS_APPLEUFS) 576 isappleufs = 1; 577 if (isappleufs) { 578 if (!Iflag && (pp->p_fstype != FS_APPLEUFS)) 579 errx(1, "`%c' partition type is not `Apple UFS'", *cp); 580 } else { 581 if (!Iflag && (pp->p_fstype != FS_BSDFFS)) 582 errx(1, "`%c' partition type is not `4.2BSD'", *cp); 583 } 584 } /* !Fflag && !mfs */ 585 586 if (fssize == 0) 587 fssize = pp->p_size; 588 if (fssize > pp->p_size && !mfs && !Fflag) 589 errx(1, "maximum file system size on the `%c' partition is %d", 590 *cp, pp->p_size); 591 if (rpm == 0) { 592 rpm = lp->d_rpm; 593 if (rpm <= 0) 594 rpm = 3600; 595 } 596 if (ntracks == 0) { 597 ntracks = lp->d_ntracks; 598 if (ntracks <= 0) 599 errx(1, "no default #tracks"); 600 } 601 if (nsectors == 0) { 602 nsectors = lp->d_nsectors; 603 if (nsectors <= 0) 604 errx(1, "no default #sectors/track"); 605 } 606 if (sectorsize == 0) { 607 sectorsize = lp->d_secsize; 608 if (sectorsize <= 0) 609 errx(1, "no default sector size"); 610 } 611 if (trackskew == -1) { 612 trackskew = lp->d_trackskew; 613 if (trackskew < 0) 614 trackskew = 0; 615 } 616 if (interleave == 0) { 617 interleave = lp->d_interleave; 618 if (interleave <= 0) 619 interleave = 1; 620 } 621 622 if (fssize < SMALL_FSSIZE) { 623 dfl_fragsize = S_DFL_FRAGSIZE; 624 dfl_blksize = S_DFL_BLKSIZE; 625 } else if (fssize < MEDIUM_FSSIZE) { 626 dfl_fragsize = M_DFL_FRAGSIZE; 627 dfl_blksize = M_DFL_BLKSIZE; 628 } else { 629 dfl_fragsize = L_DFL_FRAGSIZE; 630 dfl_blksize = L_DFL_BLKSIZE; 631 } 632 633 if (fsize == 0) { 634 fsize = pp->p_fsize; 635 if (fsize <= 0) 636 fsize = MAX(dfl_fragsize, lp->d_secsize); 637 } 638 if (bsize == 0) { 639 bsize = pp->p_frag * pp->p_fsize; 640 if (bsize <= 0) 641 bsize = MIN(dfl_blksize, 8 * fsize); 642 } 643 /* 644 * Maxcontig sets the default for the maximum number of blocks 645 * that may be allocated sequentially. With filesystem clustering 646 * it is possible to allocate contiguous blocks up to the maximum 647 * transfer size permitted by the controller or buffering. 648 */ 649 if (maxcontig == 0) 650 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 651 if (density == 0) 652 density = NFPI * fsize; 653 if (minfree < MINFREE && opt != FS_OPTSPACE) { 654 warnx("%s %s %d%%", "Warning: changing optimization to space", 655 "because minfree is less than", MINFREE); 656 opt = FS_OPTSPACE; 657 } 658 if (trackspares == -1) { 659 trackspares = lp->d_sparespertrack; 660 if (trackspares < 0) 661 trackspares = 0; 662 } 663 nphyssectors = nsectors + trackspares; 664 if (cylspares == -1) { 665 cylspares = lp->d_sparespercyl; 666 if (cylspares < 0) 667 cylspares = 0; 668 } 669 secpercyl = nsectors * ntracks - cylspares; 670 if (secpercyl != lp->d_secpercyl) 671 warnx("%s (%d) %s (%u)", 672 "Warning: calculated sectors per cylinder", secpercyl, 673 "disagrees with disk label", lp->d_secpercyl); 674 if (maxbpg == 0) 675 maxbpg = MAXBLKPG(bsize); 676 #ifdef notdef /* label may be 0 if faked up by kernel */ 677 bbsize = lp->d_bbsize; 678 sbsize = lp->d_sbsize; 679 #endif 680 oldpartition = *pp; 681 mkfs(pp, special, fsi, fso, mfsmode, mfsuid, mfsgid); 682 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 683 rewritelabel(special, fso, lp); 684 if (!Nflag) 685 close(fso); 686 close(fsi); 687 #ifdef MFS 688 if (mfs) { 689 struct mfs_args args; 690 691 switch (pid = fork()) { 692 case -1: 693 perror("mfs"); 694 exit(10); 695 case 0: 696 (void)snprintf(mountfromname, sizeof(mountfromname), 697 "mfs:%d", getpid()); 698 break; 699 default: 700 (void)snprintf(mountfromname, sizeof(mountfromname), 701 "mfs:%d", pid); 702 for (;;) { 703 /* 704 * spin until the mount succeeds 705 * or the child exits 706 */ 707 usleep(1); 708 709 /* 710 * XXX Here is a race condition: another process 711 * can mount a filesystem which hides our 712 * ramdisk before we see the success. 713 */ 714 if (statfs(argv[1], &sf) < 0) 715 err(88, "statfs %s", argv[1]); 716 if (!strcmp(sf.f_mntfromname, mountfromname) && 717 !strncmp(sf.f_mntonname, argv[1], 718 MNAMELEN) && 719 !strcmp(sf.f_fstypename, "mfs")) 720 exit(0); 721 722 res = waitpid(pid, &status, WNOHANG); 723 if (res == -1) 724 err(11, "waitpid"); 725 if (res != pid) 726 continue; 727 if (WIFEXITED(status)) { 728 if (WEXITSTATUS(status) == 0) 729 exit(0); 730 errx(1, "%s: mount: %s", argv[1], 731 strerror(WEXITSTATUS(status))); 732 } else 733 errx(11, "abnormal termination"); 734 } 735 /* NOTREACHED */ 736 } 737 738 (void) setsid(); 739 (void) close(0); 740 (void) close(1); 741 (void) close(2); 742 (void) chdir("/"); 743 744 args.fspec = mountfromname; 745 args.export.ex_root = -2; 746 if (mntflags & MNT_RDONLY) 747 args.export.ex_flags = MNT_EXRDONLY; 748 else 749 args.export.ex_flags = 0; 750 args.base = membase; 751 args.size = fssize * sectorsize; 752 doit: 753 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) { 754 if (mntflags & MNT_GETARGS) 755 err(1, "mount `%s' failed", argv[1]); 756 exit(errno); /* parent prints message */ 757 } 758 if (mntflags & MNT_GETARGS) 759 printf("base=%p, size=%ld\n", args.base, args.size); 760 } 761 #endif 762 exit(0); 763 } 764 765 #ifdef COMPAT 766 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 767 #else 768 const char lmsg[] = "%s: can't read disk label"; 769 #endif 770 771 static struct disklabel * 772 getdisklabel(char *s, volatile int fd) 773 /* XXX why is fs volatile?! */ 774 { 775 static struct disklabel lab; 776 777 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 778 #ifdef COMPAT 779 if (disktype) { 780 struct disklabel *lp; 781 782 unlabeled++; 783 lp = getdiskbyname(disktype); 784 if (lp == NULL) 785 errx(1, "%s: unknown disk type", disktype); 786 return (lp); 787 } 788 #endif 789 warn("ioctl (GDINFO)"); 790 errx(1, lmsg, s); 791 } 792 return (&lab); 793 } 794 795 static void 796 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 797 /* XXX why is fd volatile?! */ 798 { 799 #ifdef COMPAT 800 if (unlabeled) 801 return; 802 #endif 803 lp->d_checksum = 0; 804 lp->d_checksum = dkcksum(lp); 805 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 806 if (errno == ESRCH) 807 return; 808 warn("ioctl (WDINFO)"); 809 errx(1, "%s: can't rewrite disk label", s); 810 } 811 #if __vax__ 812 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 813 int i; 814 int cfd; 815 daddr_t alt; 816 off_t loff; 817 char specname[64]; 818 char blk[1024]; 819 char *cp; 820 821 /* 822 * Make name for 'c' partition. 823 */ 824 strcpy(specname, s); 825 cp = specname + strlen(specname) - 1; 826 if (!isdigit(*cp)) 827 *cp = 'c'; 828 cfd = open(specname, O_WRONLY); 829 if (cfd < 0) 830 err(1, "%s: open", specname); 831 if ((loff = getlabeloffset()) < 0) 832 err(1, "getlabeloffset()"); 833 memset(blk, 0, sizeof(blk)); 834 *(struct disklabel *)(blk + loff) = *lp; 835 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 836 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 837 off_t offset; 838 839 offset = alt + i; 840 offset *= lp->d_secsize; 841 if (lseek(cfd, offset, SEEK_SET) == -1) 842 err(1, "lseek to badsector area: "); 843 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 844 warn("alternate label %d write", i/2); 845 } 846 close(cfd); 847 } 848 #endif 849 } 850 851 static gid_t 852 mfs_group(const char *gname) 853 { 854 struct group *gp; 855 856 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 857 errx(1, "unknown gname %s", gname); 858 return gp ? gp->gr_gid : atoi(gname); 859 } 860 861 static uid_t 862 mfs_user(const char *uname) 863 { 864 struct passwd *pp; 865 866 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 867 errx(1, "unknown user %s", uname); 868 return pp ? pp->pw_uid : atoi(uname); 869 } 870 871 static int 872 strsuftoi(const char *desc, const char *arg, int min, int max) 873 { 874 long long result; 875 char *ep; 876 877 errno = 0; 878 result = strtoll(arg, &ep, 10); 879 if (ep[0] != '\0' && ep[1] != '\0') 880 errx(1, "%s `%s' is not a valid number.", desc, arg); 881 switch (tolower((unsigned char)ep[0])) { 882 case '\0': 883 case 'b': 884 break; 885 case 'k': 886 result <<= 10; 887 break; 888 case 'm': 889 result <<= 20; 890 break; 891 case 'g': 892 result <<= 30; 893 break; 894 default: 895 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 896 } 897 if (result < min) 898 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 899 desc, arg, result, min); 900 if (result > max) 901 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 902 desc, arg, result, max); 903 return ((int)result); 904 } 905 906 #define NEWFS 1 907 #define MFS_MOUNT 2 908 #define BOTH NEWFS | MFS_MOUNT 909 910 struct help_strings { 911 int flags; 912 const char *str; 913 } const help_strings[] = { 914 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 915 { NEWFS, "-F \t\tcreate file system image in regular file" }, 916 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 917 { BOTH, "-N \t\tdo not create file system, just print out " 918 "parameters" }, 919 { NEWFS, "-O \t\tcreate a 4.3BSD format filesystem" }, 920 { NEWFS, "-S secsize\tsector size" }, 921 #ifdef COMPAT 922 { NEWFS, "-T disktype\tdisk type" }, 923 #endif 924 { NEWFS, "-Z \t\tpre-zero the image file (with -F)" }, 925 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 926 { BOTH, "-b bsize\tblock size" }, 927 { BOTH, "-c cpg\t\tcylinders/group" }, 928 { BOTH, "-d rotdelay\trotational delay between contiguous " 929 "blocks" }, 930 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 931 }, 932 { BOTH, "-f fsize\tfrag size" }, 933 { NEWFS, "-g avgfilesize\taverage file size" }, 934 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 935 { BOTH, "-h avgfpdir\taverage files per directory" }, 936 { BOTH, "-i density\tnumber of bytes per inode" }, 937 { NEWFS, "-k trackskew\tsector 0 skew, per track" }, 938 { NEWFS, "-l interleave\thardware sector interleave" }, 939 { BOTH, "-m minfree\tminimum free space %%" }, 940 { NEWFS, "-n nrpos\tnumber of distinguished rotational " 941 "positions" }, 942 { BOTH, "-o optim\toptimization preference (`space' or `time')" 943 }, 944 { NEWFS, "-p tracksparse\tspare sectors per track" }, 945 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 946 { BOTH, "-s fssize\tfile system size (sectors)" }, 947 { NEWFS, "-r rpm\t\trevolutions/minute" }, 948 { NEWFS, "-t ntracks\ttracks/cylinder" }, 949 { NEWFS, "-u nsectors\tsectors/track" }, 950 { MFS_MOUNT, "-u username\tuser name of mount point" }, 951 { NEWFS, "-v volname\tApple UFS volume name" }, 952 { NEWFS, "-x cylspares\tspare sectors per cylinder" }, 953 { 0, NULL } 954 }; 955 956 static void 957 usage(void) 958 { 959 int match; 960 const struct help_strings *hs; 961 962 if (mfs) { 963 fprintf(stderr, 964 "usage: %s [ fsoptions ] special-device mount-point\n", 965 getprogname()); 966 } else 967 fprintf(stderr, 968 "usage: %s [ fsoptions ] special-device%s\n", 969 getprogname(), 970 #ifdef COMPAT 971 " [device-type]"); 972 #else 973 ""); 974 #endif 975 fprintf(stderr, "where fsoptions are:\n"); 976 977 match = mfs ? MFS_MOUNT : NEWFS; 978 for (hs = help_strings; hs->flags != 0; hs++) 979 if (hs->flags & match) 980 fprintf(stderr, "\t%s\n", hs->str); 981 exit(1); 982 } 983
Indexes created Wed Oct 22 13:09:56 GMT 2025