newfs.c revision 1.115
1 /* $NetBSD: newfs.c,v 1.115 2017/02/08 16:11:40 rin 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 1.115 2017/02/08 16:11:40 rin 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 #ifndef NO_FFS_EI 229 int needswap; /* Filesystem not in native byte order */ 230 #endif 231 char *disktype = NULL; 232 int unlabeled; 233 #ifndef NO_APPLE_UFS 234 char *appleufs_volname = 0; /* Apple UFS volume name */ 235 int isappleufs = 0; 236 #endif 237 int quotas = 0; 238 239 char device[MAXPATHLEN]; 240 241 int 242 main(int argc, char *argv[]) 243 { 244 struct disk_geom geo; 245 struct dkwedge_info dkw; 246 struct statvfs *mp; 247 struct stat sb; 248 int ch, fsi, fso, len, n, Fflag, Iflag, Zflag; 249 const char *s1, *special, *raw; 250 char *s2; 251 char specname[MAXPATHLEN]; 252 char rawname[MAXPATHLEN]; 253 const char *opstring; 254 int byte_sized = 0; 255 #ifdef MFS 256 struct mfs_args args; 257 char mountfromname[100]; 258 char mounttoname[MAXPATHLEN]; 259 pid_t pid, res; 260 struct statvfs sf; 261 int status; 262 #endif 263 mode_t mfsmode = 01777; /* default mode for a /tmp-type directory */ 264 uid_t mfsuid = 0; /* user root */ 265 gid_t mfsgid = 0; /* group wheel */ 266 mntoptparse_t mo; 267 268 fsi = fso = -1; 269 Fflag = Iflag = Zflag = 0; 270 verbosity = -1; 271 if (strstr(getprogname(), "mfs")) { 272 mfs = 1; 273 } else { 274 /* Undocumented, for ease of testing */ 275 if (argv[1] != NULL && !strcmp(argv[1], "-mfs")) { 276 argv++; 277 argc--; 278 mfs = 1; 279 } 280 } 281 282 opstring = mfs ? 283 "NT:V:a:b:d:e:f:g:h:i:m:n:o:p:q:s:u:" : 284 "B:FGINO:S:T:V:Za:b:d:e:f:g:h:i:l:m:n:o:q:r:s:v:"; 285 while ((ch = getopt(argc, argv, opstring)) != -1) 286 switch (ch) { 287 #ifndef NO_FFS_EI 288 case 'B': 289 if (strcmp(optarg, "be") == 0) { 290 # if BYTE_ORDER == LITTLE_ENDIAN 291 needswap = 1; 292 # endif 293 } else if (strcmp(optarg, "le") == 0) { 294 # if BYTE_ORDER == BIG_ENDIAN 295 needswap = 1; 296 # endif 297 } else 298 usage(); 299 break; 300 #endif 301 case 'F': 302 Fflag = 1; 303 break; 304 case 'G': 305 fprintf(stderr, "WARNING: -G may create file systems " 306 "which cause kernel panics\n"); 307 Gflag = 1; 308 break; 309 case 'I': 310 Iflag = 1; 311 break; 312 case 'N': 313 Nflag = 1; 314 if (verbosity == -1) 315 verbosity = DEFAULT_VERBOSITY; 316 break; 317 case 'O': 318 Oflag = strsuftoi64("format", optarg, 0, 2, NULL); 319 break; 320 case 'S': 321 /* XXX: non-512 byte sectors almost certainly don't work. */ 322 sectorsize = strsuftoi64("sector size", 323 optarg, 512, 65536, NULL); 324 if (sectorsize & (sectorsize - 1)) 325 errx(1, "sector size `%s' is not a power of 2.", 326 optarg); 327 break; 328 #ifdef COMPAT 329 case 'T': 330 disktype = optarg; 331 break; 332 #endif 333 case 'V': 334 verbosity = strsuftoi64("verbose", optarg, 0, 4, NULL); 335 break; 336 case 'Z': 337 Zflag = 1; 338 break; 339 case 'a': 340 maxcontig = strsuftoi64("maximum contiguous blocks", 341 optarg, 1, INT_MAX, NULL); 342 break; 343 case 'b': 344 bsize = strsuftoi64("block size", 345 optarg, MINBSIZE, MAXBSIZE, NULL); 346 break; 347 case 'd': 348 maxbsize = strsuftoi64("maximum extent size", 349 optarg, 0, INT_MAX, NULL); 350 break; 351 case 'e': 352 maxbpg = strsuftoi64( 353 "blocks per file in a cylinder group", 354 optarg, 1, INT_MAX, NULL); 355 break; 356 case 'f': 357 fsize = strsuftoi64("fragment size", 358 optarg, 1, MAXBSIZE, NULL); 359 break; 360 case 'g': 361 if (mfs) 362 mfsgid = mfs_group(optarg); 363 else { 364 avgfilesize = strsuftoi64("average file size", 365 optarg, 1, INT_MAX, NULL); 366 } 367 break; 368 case 'h': 369 avgfpdir = strsuftoi64("expected files per directory", 370 optarg, 1, INT_MAX, NULL); 371 break; 372 case 'i': 373 density = strsuftoi64("bytes per inode", 374 optarg, 1, INT_MAX, NULL); 375 break; 376 case 'm': 377 minfree = strsuftoi64("free space %", 378 optarg, 0, 99, NULL); 379 break; 380 case 'n': 381 num_inodes = strsuftoi64("number of inodes", 382 optarg, 1, INT_MAX, NULL); 383 break; 384 case 'o': 385 if (mfs) { 386 mo = getmntopts(optarg, mopts, &mntflags, 0); 387 if (mo == NULL) 388 err(1, "getmntopts"); 389 freemntopts(mo); 390 } else { 391 if (strcmp(optarg, "space") == 0) 392 opt = FS_OPTSPACE; 393 else if (strcmp(optarg, "time") == 0) 394 opt = FS_OPTTIME; 395 else 396 errx(1, "%s %s", 397 "unknown optimization preference: ", 398 "use `space' or `time'."); 399 } 400 break; 401 case 'q': 402 if (strcmp(optarg, "user") == 0) 403 quotas |= FS_Q2_DO_TYPE(USRQUOTA); 404 else if (strcmp(optarg, "group") == 0) 405 quotas |= FS_Q2_DO_TYPE(GRPQUOTA); 406 else 407 errx(1, "invalid quota type %s", optarg); 408 break; 409 case 'p': 410 /* mfs only */ 411 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 412 errx(1, "bad mode `%s'", optarg); 413 break; 414 case 's': 415 fssize = strsuftoi64("file system size", 416 optarg, INT64_MIN, INT64_MAX, &byte_sized); 417 break; 418 case 'u': 419 /* mfs only */ 420 mfsuid = mfs_user(optarg); 421 break; 422 #ifndef NO_APPLE_UFS 423 case 'v': 424 appleufs_volname = optarg; 425 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 426 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 427 if (appleufs_volname[0] == '\0') 428 errx(1,"Apple UFS volume name cannot be zero length"); 429 isappleufs = 1; 430 break; 431 #endif 432 case '?': 433 default: 434 usage(); 435 } 436 argc -= optind; 437 argv += optind; 438 439 if (Oflag < 1 && quotas != 0) 440 errx(1, "in-filesystem quota is incompatible with -O0"); 441 442 if (verbosity == -1) 443 /* Default to not showing CG info if mfs */ 444 verbosity = mfs ? 0 : DEFAULT_VERBOSITY; 445 446 #ifdef MFS 447 /* This is enough to get through the correct kernel code paths */ 448 memset(&args, 0, sizeof args); 449 args.fspec = mountfromname; 450 if (mntflags & (MNT_GETARGS | MNT_UPDATE)) { 451 if ((mntflags & MNT_GETARGS) == 0) 452 mntflags |= MNT_ASYNC; 453 if (mount(MOUNT_MFS, argv[1], mntflags, 454 &args, sizeof args) == -1) 455 err(1, "mount `%s' failed", argv[1]); 456 if (mntflags & MNT_GETARGS) 457 printf("base=%p, size=%ld\n", args.base, args.size); 458 exit(0); 459 } 460 #endif 461 462 if (argc != 2 && (mfs || argc != 1)) 463 usage(); 464 465 memset(&sb, 0, sizeof sb); 466 memset(&dkw, 0, sizeof dkw); 467 special = argv[0]; 468 if (Fflag || mfs) { 469 /* 470 * It's a file system image or an MFS, 471 * no label, use fixed default for sectorsize. 472 */ 473 if (sectorsize == 0) 474 sectorsize = DFL_SECSIZE; 475 476 if (mfs) { 477 /* 478 * Default filesystem size to that of supplied device, 479 * and fall back to 8M 480 */ 481 if (fssize == 0) 482 if (stat(special, &sb) == -1) 483 fssize = DFL_FSSIZE / sectorsize; 484 } else { 485 /* creating image in a regular file */ 486 int fl; 487 if (Nflag) 488 fl = O_RDONLY; 489 else { 490 if (fssize > 0) 491 fl = O_RDWR | O_CREAT; 492 else 493 fl = O_RDWR; 494 } 495 fsi = open(special, fl, 0777); 496 if (fsi == -1) 497 err(1, "can't open file %s", special); 498 if (fstat(fsi, &sb) == -1) 499 err(1, "can't fstat opened %s", special); 500 if (!Nflag) 501 fso = fsi; 502 } 503 } else { /* !Fflag && !mfs */ 504 raw = getfsspecname(specname, sizeof(specname), special); 505 if (raw == NULL) 506 err(1, "%s: %s", special, specname); 507 special = getdiskrawname(rawname, sizeof(rawname), raw); 508 if (special == NULL) 509 special = raw; 510 511 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 512 special = device; 513 if (fsi < 0 || fstat(fsi, &sb) == -1) 514 err(1, "%s: open for read", special); 515 if (S_ISBLK(sb.st_mode)) { 516 errx(1, "%s is a block device. use raw device", 517 special); 518 } 519 520 if (!Nflag) { 521 fso = open(special, O_WRONLY, 0); 522 if (fso < 0) 523 err(1, "%s: open for write", special); 524 525 /* Bail if target special is mounted */ 526 n = getmntinfo(&mp, MNT_NOWAIT); 527 if (n == 0) 528 err(1, "%s: getmntinfo", special); 529 530 len = sizeof(_PATH_DEV) - 1; 531 s1 = special; 532 if (strncmp(_PATH_DEV, s1, len) == 0) 533 s1 += len; 534 535 while (--n >= 0) { 536 s2 = mp->f_mntfromname; 537 if (strncmp(_PATH_DEV, s2, len) == 0) { 538 s2 += len - 1; 539 *s2 = 'r'; 540 } 541 if (strcmp(s1, s2) == 0 || 542 strcmp(s1, &s2[1]) == 0) 543 errx(1, "%s is mounted on %s", 544 special, mp->f_mntonname); 545 ++mp; 546 } 547 } 548 549 #ifdef COMPAT 550 if (disktype == NULL) 551 disktype = argv[1]; 552 #endif 553 if (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1) 554 errx(1, lmsg, special); 555 unlabeled = disktype != NULL; 556 557 if (sectorsize == 0) { 558 sectorsize = geo.dg_secsize; 559 if (sectorsize <= 0) 560 errx(1, "no default sector size"); 561 } 562 563 if (dkw.dkw_parent[0]) { 564 if (dkw.dkw_size == 0) 565 errx(1, "%s partition is unavailable", special); 566 567 #ifndef NO_APPLE_UFS 568 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0) 569 isappleufs = 1; 570 #endif 571 572 if (!Iflag) { 573 static const char m[] = 574 "%s partition type is not `%s'"; 575 if (isappleufs) { 576 if (strcmp(dkw.dkw_ptype, 577 DKW_PTYPE_APPLEUFS)) 578 errx(1, m, 579 special, "Apple UFS"); 580 } else { 581 if (strcmp(dkw.dkw_ptype, 582 DKW_PTYPE_FFS)) 583 errx(1, m, special, "4.2BSD"); 584 } 585 } 586 } /* !Fflag && !mfs */ 587 } 588 589 if (byte_sized) 590 fssize /= sectorsize; 591 if (fssize <= 0) { 592 if (sb.st_size != 0) 593 fssize += sb.st_size / sectorsize; 594 else 595 fssize += dkw.dkw_size; 596 if (fssize <= 0) 597 errx(1, "Unable to determine file system size"); 598 } 599 600 if (dkw.dkw_parent[0] && (uint64_t)fssize > dkw.dkw_size) 601 errx(1, "size %" PRIu64 " exceeds maximum file system size on " 602 "`%s' of %" PRIu64 " sectors", 603 fssize, special, dkw.dkw_size); 604 605 /* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */ 606 if (Fflag && fso != -1 607 && ftruncate(fso, (off_t)fssize * sectorsize) == -1) 608 err(1, "can't ftruncate %s to %" PRId64, special, fssize); 609 610 if (Zflag && fso != -1) { /* pre-zero (and de-sparce) the file */ 611 char *buf; 612 int bufsize, i; 613 off_t bufrem; 614 struct statvfs sfs; 615 616 if (fstatvfs(fso, &sfs) == -1) { 617 warn("can't fstatvfs `%s'", special); 618 bufsize = 8192; 619 } else 620 bufsize = sfs.f_iosize; 621 622 if ((buf = calloc(1, bufsize)) == NULL) 623 err(1, "can't malloc buffer of %d", 624 bufsize); 625 bufrem = fssize * sectorsize; 626 if (verbosity > 0) 627 printf( "Creating file system image in `%s', " 628 "size %lld bytes, in %d byte chunks.\n", 629 special, (long long)bufrem, bufsize); 630 while (bufrem > 0) { 631 i = write(fso, buf, MIN(bufsize, bufrem)); 632 if (i == -1) 633 err(1, "writing image"); 634 bufrem -= i; 635 } 636 free(buf); 637 } 638 639 /* Sort out fragment and block sizes */ 640 if (fsize == 0) { 641 fsize = bsize / DFL_FRAG_BLK; 642 if (fsize <= 0) { 643 if (isappleufs) { 644 fsize = APPLEUFS_DFL_FRAGSIZE; 645 } else { 646 if (fssize < SMALL_FSSIZE) 647 fsize = S_DFL_FRAGSIZE; 648 else if (fssize < MEDIUM_FSSIZE) 649 fsize = M_DFL_FRAGSIZE; 650 else if (fssize < LARGE_FSSIZE) 651 fsize = L_DFL_FRAGSIZE; 652 else 653 fsize = LL_DFL_FRAGSIZE; 654 if (fsize < sectorsize) 655 fsize = sectorsize; 656 } 657 } 658 } 659 if (bsize <= 0) { 660 if (isappleufs) 661 bsize = APPLEUFS_DFL_BLKSIZE; 662 else 663 bsize = DFL_FRAG_BLK * fsize; 664 } 665 666 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 667 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 668 fsize, APPLEUFS_DFL_FRAGSIZE); 669 } 670 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 671 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 672 bsize, APPLEUFS_DFL_BLKSIZE); 673 } 674 675 /* 676 * Maxcontig sets the default for the maximum number of blocks 677 * that may be allocated sequentially. With filesystem clustering 678 * it is possible to allocate contiguous blocks up to the maximum 679 * transfer size permitted by the controller or buffering. 680 */ 681 if (maxcontig == 0) 682 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 683 if (density == 0) 684 density = NFPI * fsize; 685 if (minfree < MINFREE && opt != FS_OPTSPACE) { 686 warnx("%s %s %d%%", "Warning: changing optimization to space", 687 "because minfree is less than", MINFREE); 688 opt = FS_OPTSPACE; 689 } 690 if (maxbpg == 0) { 691 if (Oflag <= 1) 692 maxbpg = MAXBLKPG_UFS1(bsize); 693 else 694 maxbpg = MAXBLKPG_UFS2(bsize); 695 } 696 mkfs(special, fsi, fso, mfsmode, mfsuid, mfsgid); 697 if (fsi != -1 && fsi != fso) 698 close(fsi); 699 if (fso != -1) 700 close(fso); 701 #ifdef MFS 702 if (mfs) { 703 704 pathadj(argv[1], mounttoname); 705 switch (pid = fork()) { 706 case -1: 707 perror("mfs"); 708 exit(10); 709 case 0: 710 (void)snprintf(mountfromname, sizeof(mountfromname), 711 "mfs:%d", getpid()); 712 break; 713 default: 714 (void)snprintf(mountfromname, sizeof(mountfromname), 715 "mfs:%d", pid); 716 for (;;) { 717 /* 718 * spin until the mount succeeds 719 * or the child exits 720 */ 721 usleep(1); 722 723 /* 724 * XXX Here is a race condition: another process 725 * can mount a filesystem which hides our 726 * ramdisk before we see the success. 727 */ 728 if (statvfs(mounttoname, &sf) < 0) 729 err(88, "statvfs %s", mounttoname); 730 if (!strcmp(sf.f_mntfromname, mountfromname) && 731 !strncmp(sf.f_mntonname, mounttoname, 732 MNAMELEN) && 733 !strcmp(sf.f_fstypename, "mfs")) 734 exit(0); 735 736 res = waitpid(pid, &status, WNOHANG); 737 if (res == -1) 738 err(11, "waitpid"); 739 if (res != pid) 740 continue; 741 if (WIFEXITED(status)) { 742 if (WEXITSTATUS(status) == 0) 743 exit(0); 744 errx(1, "%s: mount: %s", mounttoname, 745 strerror(WEXITSTATUS(status))); 746 } else 747 errx(11, "abnormal termination"); 748 } 749 /* NOTREACHED */ 750 } 751 752 (void) setsid(); 753 (void) close(0); 754 (void) close(1); 755 (void) close(2); 756 (void) chdir("/"); 757 758 args.base = membase; 759 args.size = fssize * sectorsize; 760 if (mount(MOUNT_MFS, mounttoname, mntflags | MNT_ASYNC, 761 &args, sizeof args) == -1) 762 exit(errno); /* parent prints message */ 763 } 764 #endif 765 exit(0); 766 } 767 768 static gid_t 769 mfs_group(const char *gname) 770 { 771 struct group *gp; 772 773 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 774 errx(1, "unknown gname %s", gname); 775 return gp ? gp->gr_gid : (gid_t)atoi(gname); 776 } 777 778 static uid_t 779 mfs_user(const char *uname) 780 { 781 struct passwd *pp; 782 783 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 784 errx(1, "unknown user %s", uname); 785 return pp ? pp->pw_uid : (uid_t)atoi(uname); 786 } 787 788 static int64_t 789 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 790 { 791 int64_t result, r1; 792 int shift = 0; 793 char *ep; 794 795 errno = 0; 796 r1 = strtoll(arg, &ep, 10); 797 if (ep[0] != '\0' && ep[1] != '\0') 798 errx(1, "%s `%s' is not a valid number.", desc, arg); 799 switch (ep[0]) { 800 case '\0': 801 case 's': case 'S': 802 if (num_suffix != NULL) 803 *num_suffix = 0; 804 break; 805 case 't': case 'T': 806 shift += 10; 807 /* FALLTHROUGH */ 808 case 'g': case 'G': 809 shift += 10; 810 /* FALLTHROUGH */ 811 case 'm': case 'M': 812 shift += 10; 813 /* FALLTHROUGH */ 814 case 'k': case 'K': 815 shift += 10; 816 /* FALLTHROUGH */ 817 case 'b': case 'B': 818 if (num_suffix != NULL) 819 *num_suffix = 1; 820 break; 821 default: 822 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 823 } 824 result = r1 << shift; 825 if (errno == ERANGE || result >> shift != r1) 826 errx(1, "%s `%s' is too large to convert.", desc, arg); 827 if (result < min) { 828 if (Gflag) { 829 warnx("%s `%s' (%" PRId64 ") is less than the " 830 "minimum (%" PRId64 ").", desc, arg, result, min); 831 } else { 832 errx(1, "%s `%s' (%" PRId64 ") is less than the " 833 "minimum (%" PRId64 ").", desc, arg, result, min); 834 } 835 } 836 if (result > max) { 837 if (Gflag) { 838 warnx("%s `%s' (%" PRId64 ") is greater than the " 839 "maximum (%" PRId64 ").", desc, arg, result, max); 840 } else { 841 errx(1, "%s `%s' (%" PRId64 ") is greater than the " 842 "maximum (%" PRId64 ").", desc, arg, result, max); 843 } 844 } 845 return result; 846 } 847 848 #define NEWFS 1 849 #define MFS_MOUNT 2 850 #define BOTH NEWFS | MFS_MOUNT 851 852 struct help_strings { 853 int flags; 854 const char *str; 855 } const help_strings[] = { 856 #ifndef NO_FFS_EI 857 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 858 #endif 859 { NEWFS, "-F \t\tcreate file system image in regular file" }, 860 { NEWFS, "-G \t\tmake sanity calculations non-fatal (testing only!)" }, 861 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 862 { BOTH, "-N \t\tdo not create file system, just print out " 863 "parameters" }, 864 { NEWFS, "-O N\t\tfilesystem format: 0 => 4.3BSD, 1 => FFSv1, 2 => FFSv2" }, 865 { NEWFS, "-S secsize\tsector size" }, 866 #ifdef COMPAT 867 { NEWFS, "-T disktype\tdisk type" }, 868 #endif 869 { BOTH, "-V verbose\toutput verbosity: 0 ==> none, 4 ==> max" }, 870 { NEWFS, "-Z \t\tpre-zero the image file" }, 871 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 872 { BOTH, "-b bsize\tblock size" }, 873 { BOTH, "-d maxbsize\tmaximum extent size" }, 874 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 875 }, 876 { BOTH, "-f fsize\tfrag size" }, 877 { NEWFS, "-g avgfilesize\taverage file size" }, 878 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 879 { BOTH, "-h avgfpdir\taverage files per directory" }, 880 { BOTH, "-i density\tnumber of bytes per inode" }, 881 { BOTH, "-m minfree\tminimum free space %" }, 882 { BOTH, "-n inodes\tnumber of inodes (overrides -i density)" }, 883 { BOTH, "-o optim\toptimization preference (`space' or `time')" 884 }, 885 { BOTH, "-q (user|group) enable specified quota" }, 886 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 887 { BOTH, "-s fssize\tfile system size (sectors)" }, 888 { MFS_MOUNT, "-u username\tuser name of mount point" }, 889 #ifndef NO_APPLE_UFS 890 { NEWFS, "-v volname\tApple UFS volume name" }, 891 #endif 892 { 0, NULL } 893 }; 894 895 static void 896 usage(void) 897 { 898 int match; 899 const struct help_strings *hs; 900 901 if (mfs) { 902 fprintf(stderr, 903 "usage: %s [ fsoptions ] special-device mount-point\n", 904 getprogname()); 905 } else 906 fprintf(stderr, 907 "usage: %s [ fsoptions ] special-device%s\n", 908 getprogname(), 909 #ifdef COMPAT 910 " [disk-type]"); 911 #else 912 ""); 913 #endif 914 fprintf(stderr, "where fsoptions are:\n"); 915 916 match = mfs ? MFS_MOUNT : NEWFS; 917 for (hs = help_strings; hs->flags != 0; hs++) 918 if (hs->flags & match) 919 fprintf(stderr, "\t%s\n", hs->str); 920 exit(1); 921 } 922
Indexes created Sun Sep 28 16:09:52 GMT 2025