newfs.c revision 1.112
1 /* $NetBSD: newfs.c,v 1.112 2014/10/25 16:47:23 mlelstv 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 2002 Networks Associates Technology, Inc. 34 * All rights reserved. 35 * 36 * This software was developed for the FreeBSD Project by Marshall 37 * Kirk McKusick and Network Associates Laboratories, the Security 38 * Research Division of Network Associates, Inc. under DARPA/SPAWAR 39 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 40 * research program 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by the University of 53 * California, Berkeley and its contributors. 54 * 4. Neither the name of the University nor the names of its contributors 55 * may be used to endorse or promote products derived from this software 56 * without specific prior written permission. 57 * 58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 68 * SUCH DAMAGE. 69 */ 70 71 #include <sys/cdefs.h> 72 #ifndef lint 73 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993, 1994\ 74 The Regents of the University of California. All rights reserved."); 75 #endif /* not lint */ 76 77 #ifndef lint 78 #if 0 79 static char sccsid[] = "@(#)newfs.c 8.13 (Berkeley) 5/1/95"; 80 #else 81 __RCSID("$NetBSD: newfs.c,v 1.112 2014/10/25 16:47:23 mlelstv Exp $"); 82 #endif 83 #endif /* not lint */ 84 85 /* 86 * newfs: friendly front end to mkfs 87 */ 88 #include <sys/param.h> 89 #include <sys/ioctl.h> 90 #include <sys/disklabel.h> 91 #include <sys/disk.h> 92 #include <sys/file.h> 93 #include <sys/mount.h> 94 #include <sys/sysctl.h> 95 #include <sys/wait.h> 96 97 #include <ufs/ufs/dir.h> 98 #include <ufs/ufs/dinode.h> 99 #include <ufs/ufs/ufsmount.h> 100 #include <ufs/ufs/quota2.h> 101 #include <ufs/ffs/fs.h> 102 103 #include <ctype.h> 104 #include <disktab.h> 105 #include <err.h> 106 #include <errno.h> 107 #include <grp.h> 108 #include <limits.h> 109 #include <paths.h> 110 #include <pwd.h> 111 #include <signal.h> 112 #include <stdint.h> 113 #include <stdio.h> 114 #include <stdlib.h> 115 #include <string.h> 116 #include <syslog.h> 117 #include <unistd.h> 118 #include <util.h> 119 #include <mntopts.h> 120 121 #ifdef MFS 122 #include <mountprog.h> 123 #endif 124 125 #include "dkcksum.h" 126 #include "extern.h" 127 #include "partutil.h" 128 129 struct mntopt mopts[] = { 130 MOPT_STDOPTS, 131 MOPT_ASYNC, 132 MOPT_UPDATE, 133 MOPT_GETARGS, 134 MOPT_NOATIME, 135 { .m_option = NULL }, 136 }; 137 138 static gid_t mfs_group(const char *); 139 static uid_t mfs_user(const char *); 140 static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *); 141 static void usage(void) __dead; 142 143 #define COMPAT /* allow non-labeled disks */ 144 145 #ifdef COMPAT 146 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 147 #else 148 const char lmsg[] = "%s: can't read disk label"; 149 #endif 150 151 /* 152 * The following two constants set the default block and fragment sizes. 153 * Both constants must be a power of 2 and meet the following constraints: 154 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 155 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 156 * DESBLKSIZE / DESFRAGSIZE <= 8 157 */ 158 /* 159 * For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, 160 * otherwise if less than MEDIUM_FSSIZE use M_DFL_*, 161 * otherwise if less than LARGE_FSSIZE use L_DFL_*, 162 * otherwise use LL_DFL_* especially for modern AFT disks. 163 */ 164 #define SMALL_FSSIZE (20*1024*2) 165 #define S_DFL_FRAGSIZE 512 166 #define MEDIUM_FSSIZE (1000*1024*2) 167 #define M_DFL_FRAGSIZE 1024 168 #define LARGE_FSSIZE (128*1024*1024*2) 169 #define L_DFL_FRAGSIZE 2048 170 #define LL_DFL_FRAGSIZE 4096 171 #define DFL_FRAG_BLK 8 172 173 /* Apple requires the fragment size to be at least APPLEUFS_DIRBLKSIZ 174 * but the block size cannot be larger than Darwin's PAGE_SIZE. See 175 * the mount check in Darwin's ffs_mountfs for an explanation. 176 */ 177 #define APPLEUFS_DFL_FRAGSIZE APPLEUFS_DIRBLKSIZ /* 1024 */ 178 #define APPLEUFS_DFL_BLKSIZE 4096 /* default Darwin PAGE_SIZE */ 179 180 /* 181 * Default sector size. 182 */ 183 #define DFL_SECSIZE 512 184 185 /* 186 * Default file system size for "mount_mfs swap /dir" case. 187 */ 188 #define DFL_FSSIZE (8 * 1024 * 1024) 189 190 /* 191 * MAXBLKPG determines the maximum number of data blocks which are 192 * placed in a single cylinder group. The default is one indirect 193 * block worth of data blocks. 194 */ 195 #define MAXBLKPG_UFS1(bsize) ((bsize) / sizeof(int32_t)) 196 #define MAXBLKPG_UFS2(bsize) ((bsize) / sizeof(int64_t)) 197 198 /* 199 * Each file system has a number of inodes statically allocated. 200 * We allocate one inode slot per NFPI fragments, expecting this 201 * to be far more than we will ever need. 202 */ 203 #define NFPI 4 204 205 206 int mfs; /* run as the memory based filesystem */ 207 int Gflag; /* allow garbage parameters (for testing) */ 208 int Nflag; /* run without writing file system */ 209 int Oflag = 1; /* format as an 4.3BSD file system */ 210 int verbosity; /* amount of printf() output */ 211 #define DEFAULT_VERBOSITY 3 /* 4 is traditional behavior */ 212 int64_t fssize; /* file system size */ 213 int sectorsize; /* bytes/sector */ 214 int fsize = 0; /* fragment size */ 215 int bsize = 0; /* block size */ 216 int maxbsize = 0; /* maximum clustering */ 217 int minfree = MINFREE; /* free space threshold */ 218 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 219 int density; /* number of bytes per inode */ 220 int num_inodes; /* number of inodes (overrides density) */ 221 int maxcontig = 0; /* max contiguous blocks to allocate */ 222 int maxbpg; /* maximum blocks per file in a cyl group */ 223 int avgfilesize = AVFILESIZ;/* expected average file size */ 224 int avgfpdir = AFPDIR; /* expected number of files per directory */ 225 int mntflags = 0; /* flags to be passed to mount */ 226 u_long memleft; /* virtual memory available */ 227 caddr_t membase; /* start address of memory based filesystem */ 228 int needswap; /* Filesystem not in native byte order */ 229 char *disktype = NULL; 230 int unlabeled; 231 char *appleufs_volname = 0; /* Apple UFS volume name */ 232 int isappleufs = 0; 233 int quotas = 0; 234 235 char device[MAXPATHLEN]; 236 237 int 238 main(int argc, char *argv[]) 239 { 240 struct disk_geom geo; 241 struct dkwedge_info dkw; 242 struct statvfs *mp; 243 struct stat sb; 244 int ch, fsi, fso, len, n, Fflag, Iflag, Zflag; 245 const char *s1, *special, *raw; 246 char *s2; 247 char specname[MAXPATHLEN]; 248 char rawname[MAXPATHLEN]; 249 const char *opstring; 250 int byte_sized = 0; 251 #ifdef MFS 252 struct mfs_args args; 253 char mountfromname[100]; 254 char mounttoname[MAXPATHLEN]; 255 pid_t pid, res; 256 struct statvfs sf; 257 int status; 258 #endif 259 mode_t mfsmode = 01777; /* default mode for a /tmp-type directory */ 260 uid_t mfsuid = 0; /* user root */ 261 gid_t mfsgid = 0; /* group wheel */ 262 mntoptparse_t mo; 263 264 fsi = fso = -1; 265 Fflag = Iflag = Zflag = 0; 266 verbosity = -1; 267 if (strstr(getprogname(), "mfs")) { 268 mfs = 1; 269 } else { 270 /* Undocumented, for ease of testing */ 271 if (argv[1] != NULL && !strcmp(argv[1], "-mfs")) { 272 argv++; 273 argc--; 274 mfs = 1; 275 } 276 } 277 278 opstring = mfs ? 279 "NT:V:a:b:d:e:f:g:h:i:m:n:o:p:q:s:u:" : 280 "B:FGINO:S:T:V:Za:b:d:e:f:g:h:i:l:m:n:o:q:r:s:v:"; 281 while ((ch = getopt(argc, argv, opstring)) != -1) 282 switch (ch) { 283 case 'B': 284 if (strcmp(optarg, "be") == 0) { 285 #if BYTE_ORDER == LITTLE_ENDIAN 286 needswap = 1; 287 #endif 288 } else if (strcmp(optarg, "le") == 0) { 289 #if BYTE_ORDER == BIG_ENDIAN 290 needswap = 1; 291 #endif 292 } else 293 usage(); 294 break; 295 case 'F': 296 Fflag = 1; 297 break; 298 case 'G': 299 fprintf(stderr, "WARNING: -G may create file systems " 300 "which cause kernel panics\n"); 301 Gflag = 1; 302 break; 303 case 'I': 304 Iflag = 1; 305 break; 306 case 'N': 307 Nflag = 1; 308 if (verbosity == -1) 309 verbosity = DEFAULT_VERBOSITY; 310 break; 311 case 'O': 312 Oflag = strsuftoi64("format", optarg, 0, 2, NULL); 313 break; 314 case 'S': 315 /* XXX: non-512 byte sectors almost certainly don't work. */ 316 sectorsize = strsuftoi64("sector size", 317 optarg, 512, 65536, NULL); 318 if (sectorsize & (sectorsize - 1)) 319 errx(1, "sector size `%s' is not a power of 2.", 320 optarg); 321 break; 322 #ifdef COMPAT 323 case 'T': 324 disktype = optarg; 325 break; 326 #endif 327 case 'V': 328 verbosity = strsuftoi64("verbose", optarg, 0, 4, NULL); 329 break; 330 case 'Z': 331 Zflag = 1; 332 break; 333 case 'a': 334 maxcontig = strsuftoi64("maximum contiguous blocks", 335 optarg, 1, INT_MAX, NULL); 336 break; 337 case 'b': 338 bsize = strsuftoi64("block size", 339 optarg, MINBSIZE, MAXBSIZE, NULL); 340 break; 341 case 'd': 342 maxbsize = strsuftoi64("maximum extent size", 343 optarg, 0, INT_MAX, NULL); 344 break; 345 case 'e': 346 maxbpg = strsuftoi64( 347 "blocks per file in a cylinder group", 348 optarg, 1, INT_MAX, NULL); 349 break; 350 case 'f': 351 fsize = strsuftoi64("fragment size", 352 optarg, 1, MAXBSIZE, NULL); 353 break; 354 case 'g': 355 if (mfs) 356 mfsgid = mfs_group(optarg); 357 else { 358 avgfilesize = strsuftoi64("average file size", 359 optarg, 1, INT_MAX, NULL); 360 } 361 break; 362 case 'h': 363 avgfpdir = strsuftoi64("expected files per directory", 364 optarg, 1, INT_MAX, NULL); 365 break; 366 case 'i': 367 density = strsuftoi64("bytes per inode", 368 optarg, 1, INT_MAX, NULL); 369 break; 370 case 'm': 371 minfree = strsuftoi64("free space %", 372 optarg, 0, 99, NULL); 373 break; 374 case 'n': 375 num_inodes = strsuftoi64("number of inodes", 376 optarg, 1, INT_MAX, NULL); 377 break; 378 case 'o': 379 if (mfs) { 380 mo = getmntopts(optarg, mopts, &mntflags, 0); 381 if (mo == NULL) 382 err(1, "getmntopts"); 383 freemntopts(mo); 384 } else { 385 if (strcmp(optarg, "space") == 0) 386 opt = FS_OPTSPACE; 387 else if (strcmp(optarg, "time") == 0) 388 opt = FS_OPTTIME; 389 else 390 errx(1, "%s %s", 391 "unknown optimization preference: ", 392 "use `space' or `time'."); 393 } 394 break; 395 case 'q': 396 if (strcmp(optarg, "user") == 0) 397 quotas |= FS_Q2_DO_TYPE(USRQUOTA); 398 else if (strcmp(optarg, "group") == 0) 399 quotas |= FS_Q2_DO_TYPE(GRPQUOTA); 400 else 401 errx(1, "invalid quota type %s", optarg); 402 break; 403 case 'p': 404 /* mfs only */ 405 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 406 errx(1, "bad mode `%s'", optarg); 407 break; 408 case 's': 409 fssize = strsuftoi64("file system size", 410 optarg, INT64_MIN, INT64_MAX, &byte_sized); 411 break; 412 case 'u': 413 /* mfs only */ 414 mfsuid = mfs_user(optarg); 415 break; 416 case 'v': 417 appleufs_volname = optarg; 418 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 419 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 420 if (appleufs_volname[0] == '\0') 421 errx(1,"Apple UFS volume name cannot be zero length"); 422 isappleufs = 1; 423 break; 424 case '?': 425 default: 426 usage(); 427 } 428 argc -= optind; 429 argv += optind; 430 431 if (Oflag < 1 && quotas != 0) 432 errx(1, "in-filesystem quota is incompatible with -O0"); 433 434 if (verbosity == -1) 435 /* Default to not showing CG info if mfs */ 436 verbosity = mfs ? 0 : DEFAULT_VERBOSITY; 437 438 #ifdef MFS 439 /* This is enough to get through the correct kernel code paths */ 440 memset(&args, 0, sizeof args); 441 args.fspec = mountfromname; 442 if (mntflags & (MNT_GETARGS | MNT_UPDATE)) { 443 if ((mntflags & MNT_GETARGS) == 0) 444 mntflags |= MNT_ASYNC; 445 if (mount(MOUNT_MFS, argv[1], mntflags, 446 &args, sizeof args) == -1) 447 err(1, "mount `%s' failed", argv[1]); 448 if (mntflags & MNT_GETARGS) 449 printf("base=%p, size=%ld\n", args.base, args.size); 450 exit(0); 451 } 452 #endif 453 454 if (argc != 2 && (mfs || argc != 1)) 455 usage(); 456 457 memset(&sb, 0, sizeof sb); 458 memset(&dkw, 0, sizeof dkw); 459 special = argv[0]; 460 if (Fflag || mfs) { 461 /* 462 * It's a file system image or an MFS, 463 * no label, use fixed default for sectorsize. 464 */ 465 if (sectorsize == 0) 466 sectorsize = DFL_SECSIZE; 467 468 if (mfs) { 469 /* 470 * Default filesystem size to that of supplied device, 471 * and fall back to 8M 472 */ 473 if (fssize == 0) 474 if (stat(special, &sb) == -1) 475 fssize = DFL_FSSIZE / sectorsize; 476 } else { 477 /* creating image in a regular file */ 478 int fl; 479 if (Nflag) 480 fl = O_RDONLY; 481 else { 482 if (fssize > 0) 483 fl = O_RDWR | O_CREAT; 484 else 485 fl = O_RDWR; 486 } 487 fsi = open(special, fl, 0777); 488 if (fsi == -1) 489 err(1, "can't open file %s", special); 490 if (fstat(fsi, &sb) == -1) 491 err(1, "can't fstat opened %s", special); 492 if (!Nflag) 493 fso = fsi; 494 } 495 } else { /* !Fflag && !mfs */ 496 special = getfsspecname(specname, sizeof(specname), special); 497 raw = getdiskrawname(rawname, sizeof(rawname), special); 498 if (raw != NULL) 499 special = raw; 500 501 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 502 special = device; 503 if (fsi < 0 || fstat(fsi, &sb) == -1) 504 err(1, "%s: open for read", special); 505 if (S_ISBLK(sb.st_mode)) { 506 errx(1, "%s is a block device. use raw device", 507 special); 508 } 509 510 if (!Nflag) { 511 fso = open(special, O_WRONLY, 0); 512 if (fso < 0) 513 err(1, "%s: open for write", special); 514 515 /* Bail if target special is mounted */ 516 n = getmntinfo(&mp, MNT_NOWAIT); 517 if (n == 0) 518 err(1, "%s: getmntinfo", special); 519 520 len = sizeof(_PATH_DEV) - 1; 521 s1 = special; 522 if (strncmp(_PATH_DEV, s1, len) == 0) 523 s1 += len; 524 525 while (--n >= 0) { 526 s2 = mp->f_mntfromname; 527 if (strncmp(_PATH_DEV, s2, len) == 0) { 528 s2 += len - 1; 529 *s2 = 'r'; 530 } 531 if (strcmp(s1, s2) == 0 || 532 strcmp(s1, &s2[1]) == 0) 533 errx(1, "%s is mounted on %s", 534 special, mp->f_mntonname); 535 ++mp; 536 } 537 } 538 539 #ifdef COMPAT 540 if (disktype == NULL) 541 disktype = argv[1]; 542 #endif 543 if (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1) 544 errx(1, lmsg, special); 545 unlabeled = disktype != NULL; 546 547 if (sectorsize == 0) { 548 sectorsize = geo.dg_secsize; 549 if (sectorsize <= 0) 550 errx(1, "no default sector size"); 551 } 552 553 if (dkw.dkw_parent[0]) { 554 if (dkw.dkw_size == 0) 555 errx(1, "%s partition is unavailable", special); 556 557 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0) 558 isappleufs = 1; 559 560 if (!Iflag) { 561 static const char m[] = 562 "%s partition type is not `%s'"; 563 if (isappleufs) { 564 if (strcmp(dkw.dkw_ptype, 565 DKW_PTYPE_APPLEUFS)) 566 errx(1, m, 567 special, "Apple UFS"); 568 } else { 569 if (strcmp(dkw.dkw_ptype, 570 DKW_PTYPE_FFS)) 571 errx(1, m, special, "4.2BSD"); 572 } 573 } 574 } /* !Fflag && !mfs */ 575 } 576 577 if (byte_sized) 578 fssize /= sectorsize; 579 if (fssize <= 0) { 580 if (sb.st_size != 0) 581 fssize += sb.st_size / sectorsize; 582 else 583 fssize += dkw.dkw_size; 584 if (fssize <= 0) 585 errx(1, "Unable to determine file system size"); 586 } 587 588 if (dkw.dkw_parent[0] && (uint64_t)fssize > dkw.dkw_size) 589 errx(1, "size %" PRIu64 " exceeds maximum file system size on " 590 "`%s' of %" PRIu64 " sectors", 591 fssize, special, dkw.dkw_size); 592 593 /* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */ 594 if (Fflag && fso != -1 595 && ftruncate(fso, (off_t)fssize * sectorsize) == -1) 596 err(1, "can't ftruncate %s to %" PRId64, special, fssize); 597 598 if (Zflag && fso != -1) { /* pre-zero (and de-sparce) the file */ 599 char *buf; 600 int bufsize, i; 601 off_t bufrem; 602 struct statvfs sfs; 603 604 if (fstatvfs(fso, &sfs) == -1) { 605 warn("can't fstatvfs `%s'", special); 606 bufsize = 8192; 607 } else 608 bufsize = sfs.f_iosize; 609 610 if ((buf = calloc(1, bufsize)) == NULL) 611 err(1, "can't malloc buffer of %d", 612 bufsize); 613 bufrem = fssize * sectorsize; 614 if (verbosity > 0) 615 printf( "Creating file system image in `%s', " 616 "size %lld bytes, in %d byte chunks.\n", 617 special, (long long)bufrem, bufsize); 618 while (bufrem > 0) { 619 i = write(fso, buf, MIN(bufsize, bufrem)); 620 if (i == -1) 621 err(1, "writing image"); 622 bufrem -= i; 623 } 624 free(buf); 625 } 626 627 /* Sort out fragment and block sizes */ 628 if (fsize == 0) { 629 fsize = bsize / DFL_FRAG_BLK; 630 if (fsize <= 0) { 631 if (isappleufs) { 632 fsize = APPLEUFS_DFL_FRAGSIZE; 633 } else { 634 if (fssize < SMALL_FSSIZE) 635 fsize = S_DFL_FRAGSIZE; 636 else if (fssize < MEDIUM_FSSIZE) 637 fsize = M_DFL_FRAGSIZE; 638 else if (fssize < LARGE_FSSIZE) 639 fsize = L_DFL_FRAGSIZE; 640 else 641 fsize = LL_DFL_FRAGSIZE; 642 if (fsize < sectorsize) 643 fsize = sectorsize; 644 } 645 } 646 } 647 if (bsize <= 0) { 648 if (isappleufs) 649 bsize = APPLEUFS_DFL_BLKSIZE; 650 else 651 bsize = DFL_FRAG_BLK * fsize; 652 } 653 654 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 655 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 656 fsize, APPLEUFS_DFL_FRAGSIZE); 657 } 658 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 659 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 660 bsize, APPLEUFS_DFL_BLKSIZE); 661 } 662 663 /* 664 * Maxcontig sets the default for the maximum number of blocks 665 * that may be allocated sequentially. With filesystem clustering 666 * it is possible to allocate contiguous blocks up to the maximum 667 * transfer size permitted by the controller or buffering. 668 */ 669 if (maxcontig == 0) 670 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 671 if (density == 0) 672 density = NFPI * fsize; 673 if (minfree < MINFREE && opt != FS_OPTSPACE) { 674 warnx("%s %s %d%%", "Warning: changing optimization to space", 675 "because minfree is less than", MINFREE); 676 opt = FS_OPTSPACE; 677 } 678 if (maxbpg == 0) { 679 if (Oflag <= 1) 680 maxbpg = MAXBLKPG_UFS1(bsize); 681 else 682 maxbpg = MAXBLKPG_UFS2(bsize); 683 } 684 mkfs(special, fsi, fso, mfsmode, mfsuid, mfsgid); 685 if (fsi != -1 && fsi != fso) 686 close(fsi); 687 if (fso != -1) 688 close(fso); 689 #ifdef MFS 690 if (mfs) { 691 692 pathadj(argv[1], mounttoname); 693 switch (pid = fork()) { 694 case -1: 695 perror("mfs"); 696 exit(10); 697 case 0: 698 (void)snprintf(mountfromname, sizeof(mountfromname), 699 "mfs:%d", getpid()); 700 break; 701 default: 702 (void)snprintf(mountfromname, sizeof(mountfromname), 703 "mfs:%d", pid); 704 for (;;) { 705 /* 706 * spin until the mount succeeds 707 * or the child exits 708 */ 709 usleep(1); 710 711 /* 712 * XXX Here is a race condition: another process 713 * can mount a filesystem which hides our 714 * ramdisk before we see the success. 715 */ 716 if (statvfs(mounttoname, &sf) < 0) 717 err(88, "statvfs %s", mounttoname); 718 if (!strcmp(sf.f_mntfromname, mountfromname) && 719 !strncmp(sf.f_mntonname, mounttoname, 720 MNAMELEN) && 721 !strcmp(sf.f_fstypename, "mfs")) 722 exit(0); 723 724 res = waitpid(pid, &status, WNOHANG); 725 if (res == -1) 726 err(11, "waitpid"); 727 if (res != pid) 728 continue; 729 if (WIFEXITED(status)) { 730 if (WEXITSTATUS(status) == 0) 731 exit(0); 732 errx(1, "%s: mount: %s", mounttoname, 733 strerror(WEXITSTATUS(status))); 734 } else 735 errx(11, "abnormal termination"); 736 } 737 /* NOTREACHED */ 738 } 739 740 (void) setsid(); 741 (void) close(0); 742 (void) close(1); 743 (void) close(2); 744 (void) chdir("/"); 745 746 args.base = membase; 747 args.size = fssize * sectorsize; 748 if (mount(MOUNT_MFS, mounttoname, mntflags | MNT_ASYNC, 749 &args, sizeof args) == -1) 750 exit(errno); /* parent prints message */ 751 } 752 #endif 753 exit(0); 754 } 755 756 static gid_t 757 mfs_group(const char *gname) 758 { 759 struct group *gp; 760 761 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 762 errx(1, "unknown gname %s", gname); 763 return gp ? gp->gr_gid : (gid_t)atoi(gname); 764 } 765 766 static uid_t 767 mfs_user(const char *uname) 768 { 769 struct passwd *pp; 770 771 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 772 errx(1, "unknown user %s", uname); 773 return pp ? pp->pw_uid : (uid_t)atoi(uname); 774 } 775 776 static int64_t 777 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 778 { 779 int64_t result, r1; 780 int shift = 0; 781 char *ep; 782 783 errno = 0; 784 r1 = strtoll(arg, &ep, 10); 785 if (ep[0] != '\0' && ep[1] != '\0') 786 errx(1, "%s `%s' is not a valid number.", desc, arg); 787 switch (ep[0]) { 788 case '\0': 789 case 's': case 'S': 790 if (num_suffix != NULL) 791 *num_suffix = 0; 792 break; 793 case 't': case 'T': 794 shift += 10; 795 /* FALLTHROUGH */ 796 case 'g': case 'G': 797 shift += 10; 798 /* FALLTHROUGH */ 799 case 'm': case 'M': 800 shift += 10; 801 /* FALLTHROUGH */ 802 case 'k': case 'K': 803 shift += 10; 804 /* FALLTHROUGH */ 805 case 'b': case 'B': 806 if (num_suffix != NULL) 807 *num_suffix = 1; 808 break; 809 default: 810 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 811 } 812 result = r1 << shift; 813 if (errno == ERANGE || result >> shift != r1) 814 errx(1, "%s `%s' is too large to convert.", desc, arg); 815 if (result < min) { 816 if (Gflag) { 817 warnx("%s `%s' (%" PRId64 ") is less than the " 818 "minimum (%" PRId64 ").", desc, arg, result, min); 819 } else { 820 errx(1, "%s `%s' (%" PRId64 ") is less than the " 821 "minimum (%" PRId64 ").", desc, arg, result, min); 822 } 823 } 824 if (result > max) { 825 if (Gflag) { 826 warnx("%s `%s' (%" PRId64 ") is greater than the " 827 "maximum (%" PRId64 ").", desc, arg, result, max); 828 } else { 829 errx(1, "%s `%s' (%" PRId64 ") is greater than the " 830 "maximum (%" PRId64 ").", desc, arg, result, max); 831 } 832 } 833 return result; 834 } 835 836 #define NEWFS 1 837 #define MFS_MOUNT 2 838 #define BOTH NEWFS | MFS_MOUNT 839 840 struct help_strings { 841 int flags; 842 const char *str; 843 } const help_strings[] = { 844 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 845 { NEWFS, "-F \t\tcreate file system image in regular file" }, 846 { NEWFS, "-G \t\tmake sanity calculations non-fatal (testing only!)" }, 847 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 848 { BOTH, "-N \t\tdo not create file system, just print out " 849 "parameters" }, 850 { NEWFS, "-O N\t\tfilesystem format: 0 => 4.3BSD, 1 => FFSv1, 2 => FFSv2" }, 851 { NEWFS, "-S secsize\tsector size" }, 852 #ifdef COMPAT 853 { NEWFS, "-T disktype\tdisk type" }, 854 #endif 855 { BOTH, "-V verbose\toutput verbosity: 0 ==> none, 4 ==> max" }, 856 { NEWFS, "-Z \t\tpre-zero the image file" }, 857 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 858 { BOTH, "-b bsize\tblock size" }, 859 { BOTH, "-d maxbsize\tmaximum extent size" }, 860 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 861 }, 862 { BOTH, "-f fsize\tfrag size" }, 863 { NEWFS, "-g avgfilesize\taverage file size" }, 864 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 865 { BOTH, "-h avgfpdir\taverage files per directory" }, 866 { BOTH, "-i density\tnumber of bytes per inode" }, 867 { BOTH, "-m minfree\tminimum free space %%" }, 868 { BOTH, "-n inodes\tnumber of inodes (overrides -i density)" }, 869 { BOTH, "-o optim\toptimization preference (`space' or `time')" 870 }, 871 { BOTH, "-q (user|group) enable specified quota" }, 872 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 873 { BOTH, "-s fssize\tfile system size (sectors)" }, 874 { MFS_MOUNT, "-u username\tuser name of mount point" }, 875 { NEWFS, "-v volname\tApple UFS volume name" }, 876 { 0, NULL } 877 }; 878 879 static void 880 usage(void) 881 { 882 int match; 883 const struct help_strings *hs; 884 885 if (mfs) { 886 fprintf(stderr, 887 "usage: %s [ fsoptions ] special-device mount-point\n", 888 getprogname()); 889 } else 890 fprintf(stderr, 891 "usage: %s [ fsoptions ] special-device%s\n", 892 getprogname(), 893 #ifdef COMPAT 894 " [disk-type]"); 895 #else 896 ""); 897 #endif 898 fprintf(stderr, "where fsoptions are:\n"); 899 900 match = mfs ? MFS_MOUNT : NEWFS; 901 for (hs = help_strings; hs->flags != 0; hs++) 902 if (hs->flags & match) 903 fprintf(stderr, "\t%s\n", hs->str); 904 exit(1); 905 } 906
Indexes created Fri Sep 26 08:10:20 GMT 2025