newfs.c revision 1.109.4.1
1 /* $NetBSD: newfs.c,v 1.109.4.1 2012/04/17 00:05:41 yamt 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 1.109.4.1 2012/04/17 00:05:41 yamt 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_*, otherwise use 161 * L_DFL_*. 162 */ 163 #define SMALL_FSSIZE (20*1024*2) 164 #define S_DFL_FRAGSIZE 512 165 #define MEDIUM_FSSIZE (1000*1024*2) 166 #define M_DFL_FRAGSIZE 1024 167 #define L_DFL_FRAGSIZE 2048 168 #define DFL_FRAG_BLK 8 169 170 /* Apple requires the fragment size to be at least APPLEUFS_DIRBLKSIZ 171 * but the block size cannot be larger than Darwin's PAGE_SIZE. See 172 * the mount check in Darwin's ffs_mountfs for an explanation. 173 */ 174 #define APPLEUFS_DFL_FRAGSIZE APPLEUFS_DIRBLKSIZ /* 1024 */ 175 #define APPLEUFS_DFL_BLKSIZE 4096 /* default Darwin PAGE_SIZE */ 176 177 /* 178 * Default sector size. 179 */ 180 #define DFL_SECSIZE 512 181 182 /* 183 * Default file system size for "mount_mfs swap /dir" case. 184 */ 185 #define DFL_FSSIZE (8 * 1024 * 1024) 186 187 /* 188 * MAXBLKPG determines the maximum number of data blocks which are 189 * placed in a single cylinder group. The default is one indirect 190 * block worth of data blocks. 191 */ 192 #define MAXBLKPG_UFS1(bsize) ((bsize) / sizeof(int32_t)) 193 #define MAXBLKPG_UFS2(bsize) ((bsize) / sizeof(int64_t)) 194 195 /* 196 * Each file system has a number of inodes statically allocated. 197 * We allocate one inode slot per NFPI fragments, expecting this 198 * to be far more than we will ever need. 199 */ 200 #define NFPI 4 201 202 203 int mfs; /* run as the memory based filesystem */ 204 int Gflag; /* allow garbage parameters (for testing) */ 205 int Nflag; /* run without writing file system */ 206 int Oflag = 1; /* format as an 4.3BSD file system */ 207 int verbosity; /* amount of printf() output */ 208 #define DEFAULT_VERBOSITY 3 /* 4 is traditional behavior */ 209 int64_t fssize; /* file system size */ 210 int sectorsize; /* bytes/sector */ 211 int fsize = 0; /* fragment size */ 212 int bsize = 0; /* block size */ 213 int maxbsize = 0; /* maximum clustering */ 214 int minfree = MINFREE; /* free space threshold */ 215 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 216 int density; /* number of bytes per inode */ 217 int num_inodes; /* number of inodes (overrides density) */ 218 int maxcontig = 0; /* max contiguous blocks to allocate */ 219 int maxbpg; /* maximum blocks per file in a cyl group */ 220 int avgfilesize = AVFILESIZ;/* expected average file size */ 221 int avgfpdir = AFPDIR; /* expected number of files per directory */ 222 int mntflags = 0; /* flags to be passed to mount */ 223 u_long memleft; /* virtual memory available */ 224 caddr_t membase; /* start address of memory based filesystem */ 225 int needswap; /* Filesystem not in native byte order */ 226 char *disktype = NULL; 227 int unlabeled; 228 char *appleufs_volname = 0; /* Apple UFS volume name */ 229 int isappleufs = 0; 230 int quotas = 0; 231 232 char device[MAXPATHLEN]; 233 234 int 235 main(int argc, char *argv[]) 236 { 237 struct disk_geom geo; 238 struct dkwedge_info dkw; 239 struct statvfs *mp; 240 struct stat sb; 241 int ch, fsi, fso, len, n, Fflag, Iflag, Zflag; 242 char *s1, *s2, *special; 243 const char *opstring; 244 int byte_sized = 0; 245 #ifdef MFS 246 struct mfs_args args; 247 char mountfromname[100]; 248 char mounttoname[MAXPATHLEN]; 249 pid_t pid, res; 250 struct statvfs sf; 251 int status; 252 #endif 253 mode_t mfsmode = 01777; /* default mode for a /tmp-type directory */ 254 uid_t mfsuid = 0; /* user root */ 255 gid_t mfsgid = 0; /* group wheel */ 256 mntoptparse_t mo; 257 258 fsi = fso = -1; 259 Fflag = Iflag = Zflag = 0; 260 verbosity = -1; 261 if (strstr(getprogname(), "mfs")) { 262 mfs = 1; 263 } else { 264 /* Undocumented, for ease of testing */ 265 if (argv[1] != NULL && !strcmp(argv[1], "-mfs")) { 266 argv++; 267 argc--; 268 mfs = 1; 269 } 270 } 271 272 opstring = mfs ? 273 "NT:V:a:b:d:e:f:g:h:i:m:n:o:p:q:s:u:" : 274 "B:FGINO:S:T:V:Za:b:d:e:f:g:h:i:l:m:n:o:q:r:s:v:"; 275 while ((ch = getopt(argc, argv, opstring)) != -1) 276 switch (ch) { 277 case 'B': 278 if (strcmp(optarg, "be") == 0) { 279 #if BYTE_ORDER == LITTLE_ENDIAN 280 needswap = 1; 281 #endif 282 } else if (strcmp(optarg, "le") == 0) { 283 #if BYTE_ORDER == BIG_ENDIAN 284 needswap = 1; 285 #endif 286 } else 287 usage(); 288 break; 289 case 'F': 290 Fflag = 1; 291 break; 292 case 'G': 293 fprintf(stderr, "WARNING: -G may create file systems " 294 "which cause kernel panics\n"); 295 Gflag = 1; 296 break; 297 case 'I': 298 Iflag = 1; 299 break; 300 case 'N': 301 Nflag = 1; 302 if (verbosity == -1) 303 verbosity = DEFAULT_VERBOSITY; 304 break; 305 case 'O': 306 Oflag = strsuftoi64("format", optarg, 0, 2, NULL); 307 break; 308 case 'S': 309 /* XXX: non-512 byte sectors almost certainly don't work. */ 310 sectorsize = strsuftoi64("sector size", 311 optarg, 512, 65536, NULL); 312 if (sectorsize & (sectorsize - 1)) 313 errx(1, "sector size `%s' is not a power of 2.", 314 optarg); 315 break; 316 #ifdef COMPAT 317 case 'T': 318 disktype = optarg; 319 break; 320 #endif 321 case 'V': 322 verbosity = strsuftoi64("verbose", optarg, 0, 4, NULL); 323 break; 324 case 'Z': 325 Zflag = 1; 326 break; 327 case 'a': 328 maxcontig = strsuftoi64("maximum contiguous blocks", 329 optarg, 1, INT_MAX, NULL); 330 break; 331 case 'b': 332 bsize = strsuftoi64("block size", 333 optarg, MINBSIZE, MAXBSIZE, NULL); 334 break; 335 case 'd': 336 maxbsize = strsuftoi64("maximum extent size", 337 optarg, 0, INT_MAX, NULL); 338 break; 339 case 'e': 340 maxbpg = strsuftoi64( 341 "blocks per file in a cylinder group", 342 optarg, 1, INT_MAX, NULL); 343 break; 344 case 'f': 345 fsize = strsuftoi64("fragment size", 346 optarg, 1, MAXBSIZE, NULL); 347 break; 348 case 'g': 349 if (mfs) 350 mfsgid = mfs_group(optarg); 351 else { 352 avgfilesize = strsuftoi64("average file size", 353 optarg, 1, INT_MAX, NULL); 354 } 355 break; 356 case 'h': 357 avgfpdir = strsuftoi64("expected files per directory", 358 optarg, 1, INT_MAX, NULL); 359 break; 360 case 'i': 361 density = strsuftoi64("bytes per inode", 362 optarg, 1, INT_MAX, NULL); 363 break; 364 case 'm': 365 minfree = strsuftoi64("free space %", 366 optarg, 0, 99, NULL); 367 break; 368 case 'n': 369 num_inodes = strsuftoi64("number of inodes", 370 optarg, 1, INT_MAX, NULL); 371 break; 372 case 'o': 373 if (mfs) { 374 mo = getmntopts(optarg, mopts, &mntflags, 0); 375 if (mo == NULL) 376 err(1, "getmntopts"); 377 freemntopts(mo); 378 } else { 379 if (strcmp(optarg, "space") == 0) 380 opt = FS_OPTSPACE; 381 else if (strcmp(optarg, "time") == 0) 382 opt = FS_OPTTIME; 383 else 384 errx(1, "%s %s", 385 "unknown optimization preference: ", 386 "use `space' or `time'."); 387 } 388 break; 389 case 'q': 390 if (strcmp(optarg, "user") == 0) 391 quotas |= FS_Q2_DO_TYPE(USRQUOTA); 392 else if (strcmp(optarg, "group") == 0) 393 quotas |= FS_Q2_DO_TYPE(GRPQUOTA); 394 else 395 errx(1, "invalid quota type %s", optarg); 396 break; 397 case 'p': 398 /* mfs only */ 399 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 400 errx(1, "bad mode `%s'", optarg); 401 break; 402 case 's': 403 fssize = strsuftoi64("file system size", 404 optarg, INT64_MIN, INT64_MAX, &byte_sized); 405 break; 406 case 'u': 407 /* mfs only */ 408 mfsuid = mfs_user(optarg); 409 break; 410 case 'v': 411 appleufs_volname = optarg; 412 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 413 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 414 if (appleufs_volname[0] == '\0') 415 errx(1,"Apple UFS volume name cannot be zero length"); 416 isappleufs = 1; 417 break; 418 case '?': 419 default: 420 usage(); 421 } 422 argc -= optind; 423 argv += optind; 424 425 if (Oflag < 1 && quotas != 0) 426 errx(1, "in-filesystem quota is incompatible with -O0"); 427 428 if (verbosity == -1) 429 /* Default to not showing CG info if mfs */ 430 verbosity = mfs ? 0 : DEFAULT_VERBOSITY; 431 432 #ifdef MFS 433 /* This is enough to get through the correct kernel code paths */ 434 memset(&args, 0, sizeof args); 435 args.fspec = mountfromname; 436 if (mntflags & (MNT_GETARGS | MNT_UPDATE)) { 437 if ((mntflags & MNT_GETARGS) == 0) 438 mntflags |= MNT_ASYNC; 439 if (mount(MOUNT_MFS, argv[1], mntflags, 440 &args, sizeof args) == -1) 441 err(1, "mount `%s' failed", argv[1]); 442 if (mntflags & MNT_GETARGS) 443 printf("base=%p, size=%ld\n", args.base, args.size); 444 exit(0); 445 } 446 #endif 447 448 if (argc != 2 && (mfs || argc != 1)) 449 usage(); 450 451 memset(&sb, 0, sizeof sb); 452 memset(&dkw, 0, sizeof dkw); 453 special = argv[0]; 454 if (Fflag || mfs) { 455 /* 456 * It's a file system image or an MFS, 457 * no label, use fixed default for sectorsize. 458 */ 459 if (sectorsize == 0) 460 sectorsize = DFL_SECSIZE; 461 462 if (mfs) { 463 /* 464 * Default filesystem size to that of supplied device, 465 * and fall back to 8M 466 */ 467 if (fssize == 0) 468 if (stat(special, &sb) == -1) 469 fssize = DFL_FSSIZE / sectorsize; 470 } else { 471 /* creating image in a regular file */ 472 int fl; 473 if (Nflag) 474 fl = O_RDONLY; 475 else { 476 if (fssize > 0) 477 fl = O_RDWR | O_CREAT; 478 else 479 fl = O_RDWR; 480 } 481 fsi = open(special, fl, 0777); 482 if (fsi == -1) 483 err(1, "can't open file %s", special); 484 if (fstat(fsi, &sb) == -1) 485 err(1, "can't fstat opened %s", special); 486 if (!Nflag) 487 fso = fsi; 488 } 489 } else { /* !Fflag && !mfs */ 490 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 491 special = device; 492 if (fsi < 0 || fstat(fsi, &sb) == -1) 493 err(1, "%s: open for read", special); 494 if (S_ISBLK(sb.st_mode)) { 495 errx(1, "%s is a block device. use raw device", 496 special); 497 } 498 499 if (!Nflag) { 500 fso = open(special, O_WRONLY, 0); 501 if (fso < 0) 502 err(1, "%s: open for write", special); 503 504 /* Bail if target special is mounted */ 505 n = getmntinfo(&mp, MNT_NOWAIT); 506 if (n == 0) 507 err(1, "%s: getmntinfo", special); 508 509 len = sizeof(_PATH_DEV) - 1; 510 s1 = special; 511 if (strncmp(_PATH_DEV, s1, len) == 0) 512 s1 += len; 513 514 while (--n >= 0) { 515 s2 = mp->f_mntfromname; 516 if (strncmp(_PATH_DEV, s2, len) == 0) { 517 s2 += len - 1; 518 *s2 = 'r'; 519 } 520 if (strcmp(s1, s2) == 0 || 521 strcmp(s1, &s2[1]) == 0) 522 errx(1, "%s is mounted on %s", 523 special, mp->f_mntonname); 524 ++mp; 525 } 526 } 527 528 #ifdef COMPAT 529 if (disktype == NULL) 530 disktype = argv[1]; 531 #endif 532 if (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1) 533 errx(1, lmsg, special); 534 unlabeled = disktype != NULL; 535 536 if (sectorsize == 0) { 537 sectorsize = geo.dg_secsize; 538 if (sectorsize <= 0) 539 errx(1, "no default sector size"); 540 } 541 542 if (dkw.dkw_parent[0]) { 543 if (dkw.dkw_size == 0) 544 errx(1, "%s partition is unavailable", special); 545 546 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0) 547 isappleufs = 1; 548 549 if (!Iflag) { 550 static const char m[] = 551 "%s partition type is not `%s'"; 552 if (isappleufs) { 553 if (strcmp(dkw.dkw_ptype, 554 DKW_PTYPE_APPLEUFS)) 555 errx(1, m, 556 special, "Apple UFS"); 557 } else { 558 if (strcmp(dkw.dkw_ptype, 559 DKW_PTYPE_FFS)) 560 errx(1, m, special, "4.2BSD"); 561 } 562 } 563 } /* !Fflag && !mfs */ 564 } 565 566 if (byte_sized) 567 fssize /= sectorsize; 568 if (fssize <= 0) { 569 if (sb.st_size != 0) 570 fssize += sb.st_size / sectorsize; 571 else 572 fssize += dkw.dkw_size; 573 if (fssize <= 0) 574 errx(1, "Unable to determine file system size"); 575 } 576 577 if (dkw.dkw_parent[0] && (uint64_t)fssize > dkw.dkw_size) 578 errx(1, "size %" PRIu64 " exceeds maximum file system size on " 579 "`%s' of %" PRIu64 " sectors", 580 fssize, special, dkw.dkw_size); 581 582 /* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */ 583 if (Fflag && fso != -1 584 && ftruncate(fso, (off_t)fssize * sectorsize) == -1) 585 err(1, "can't ftruncate %s to %" PRId64, special, fssize); 586 587 if (Zflag && fso != -1) { /* pre-zero (and de-sparce) the file */ 588 char *buf; 589 int bufsize, i; 590 off_t bufrem; 591 struct statvfs sfs; 592 593 if (fstatvfs(fso, &sfs) == -1) { 594 warn("can't fstatvfs `%s'", special); 595 bufsize = 8192; 596 } else 597 bufsize = sfs.f_iosize; 598 599 if ((buf = calloc(1, bufsize)) == NULL) 600 err(1, "can't malloc buffer of %d", 601 bufsize); 602 bufrem = fssize * sectorsize; 603 if (verbosity > 0) 604 printf( "Creating file system image in `%s', " 605 "size %lld bytes, in %d byte chunks.\n", 606 special, (long long)bufrem, bufsize); 607 while (bufrem > 0) { 608 i = write(fso, buf, MIN(bufsize, bufrem)); 609 if (i == -1) 610 err(1, "writing image"); 611 bufrem -= i; 612 } 613 free(buf); 614 } 615 616 /* Sort out fragment and block sizes */ 617 if (fsize == 0) { 618 fsize = bsize / DFL_FRAG_BLK; 619 if (fsize <= 0) { 620 if (isappleufs) { 621 fsize = APPLEUFS_DFL_FRAGSIZE; 622 } else { 623 if (fssize < SMALL_FSSIZE) 624 fsize = S_DFL_FRAGSIZE; 625 else if (fssize < MEDIUM_FSSIZE) 626 fsize = M_DFL_FRAGSIZE; 627 else 628 fsize = L_DFL_FRAGSIZE; 629 if (fsize < sectorsize) 630 fsize = sectorsize; 631 } 632 } 633 } 634 if (bsize <= 0) { 635 if (isappleufs) 636 bsize = APPLEUFS_DFL_BLKSIZE; 637 else 638 bsize = DFL_FRAG_BLK * fsize; 639 } 640 641 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 642 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 643 fsize, APPLEUFS_DFL_FRAGSIZE); 644 } 645 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 646 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 647 bsize, APPLEUFS_DFL_BLKSIZE); 648 } 649 650 /* 651 * Maxcontig sets the default for the maximum number of blocks 652 * that may be allocated sequentially. With filesystem clustering 653 * it is possible to allocate contiguous blocks up to the maximum 654 * transfer size permitted by the controller or buffering. 655 */ 656 if (maxcontig == 0) 657 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 658 if (density == 0) 659 density = NFPI * fsize; 660 if (minfree < MINFREE && opt != FS_OPTSPACE) { 661 warnx("%s %s %d%%", "Warning: changing optimization to space", 662 "because minfree is less than", MINFREE); 663 opt = FS_OPTSPACE; 664 } 665 if (maxbpg == 0) { 666 if (Oflag <= 1) 667 maxbpg = MAXBLKPG_UFS1(bsize); 668 else 669 maxbpg = MAXBLKPG_UFS2(bsize); 670 } 671 mkfs(special, fsi, fso, mfsmode, mfsuid, mfsgid); 672 if (fsi != -1 && fsi != fso) 673 close(fsi); 674 if (fso != -1) 675 close(fso); 676 #ifdef MFS 677 if (mfs) { 678 679 pathadj(argv[1], mounttoname); 680 switch (pid = fork()) { 681 case -1: 682 perror("mfs"); 683 exit(10); 684 case 0: 685 (void)snprintf(mountfromname, sizeof(mountfromname), 686 "mfs:%d", getpid()); 687 break; 688 default: 689 (void)snprintf(mountfromname, sizeof(mountfromname), 690 "mfs:%d", pid); 691 for (;;) { 692 /* 693 * spin until the mount succeeds 694 * or the child exits 695 */ 696 usleep(1); 697 698 /* 699 * XXX Here is a race condition: another process 700 * can mount a filesystem which hides our 701 * ramdisk before we see the success. 702 */ 703 if (statvfs(mounttoname, &sf) < 0) 704 err(88, "statvfs %s", mounttoname); 705 if (!strcmp(sf.f_mntfromname, mountfromname) && 706 !strncmp(sf.f_mntonname, mounttoname, 707 MNAMELEN) && 708 !strcmp(sf.f_fstypename, "mfs")) 709 exit(0); 710 711 res = waitpid(pid, &status, WNOHANG); 712 if (res == -1) 713 err(11, "waitpid"); 714 if (res != pid) 715 continue; 716 if (WIFEXITED(status)) { 717 if (WEXITSTATUS(status) == 0) 718 exit(0); 719 errx(1, "%s: mount: %s", mounttoname, 720 strerror(WEXITSTATUS(status))); 721 } else 722 errx(11, "abnormal termination"); 723 } 724 /* NOTREACHED */ 725 } 726 727 (void) setsid(); 728 (void) close(0); 729 (void) close(1); 730 (void) close(2); 731 (void) chdir("/"); 732 733 args.base = membase; 734 args.size = fssize * sectorsize; 735 if (mount(MOUNT_MFS, mounttoname, mntflags | MNT_ASYNC, 736 &args, sizeof args) == -1) 737 exit(errno); /* parent prints message */ 738 } 739 #endif 740 exit(0); 741 } 742 743 static gid_t 744 mfs_group(const char *gname) 745 { 746 struct group *gp; 747 748 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 749 errx(1, "unknown gname %s", gname); 750 return gp ? gp->gr_gid : (gid_t)atoi(gname); 751 } 752 753 static uid_t 754 mfs_user(const char *uname) 755 { 756 struct passwd *pp; 757 758 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 759 errx(1, "unknown user %s", uname); 760 return pp ? pp->pw_uid : (uid_t)atoi(uname); 761 } 762 763 static int64_t 764 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 765 { 766 int64_t result, r1; 767 int shift = 0; 768 char *ep; 769 770 errno = 0; 771 r1 = strtoll(arg, &ep, 10); 772 if (ep[0] != '\0' && ep[1] != '\0') 773 errx(1, "%s `%s' is not a valid number.", desc, arg); 774 switch (ep[0]) { 775 case '\0': 776 case 's': case 'S': 777 if (num_suffix != NULL) 778 *num_suffix = 0; 779 break; 780 case 't': case 'T': 781 shift += 10; 782 /* FALLTHROUGH */ 783 case 'g': case 'G': 784 shift += 10; 785 /* FALLTHROUGH */ 786 case 'm': case 'M': 787 shift += 10; 788 /* FALLTHROUGH */ 789 case 'k': case 'K': 790 shift += 10; 791 /* FALLTHROUGH */ 792 case 'b': case 'B': 793 if (num_suffix != NULL) 794 *num_suffix = 1; 795 break; 796 default: 797 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 798 } 799 result = r1 << shift; 800 if (errno == ERANGE || result >> shift != r1) 801 errx(1, "%s `%s' is too large to convert.", desc, arg); 802 if (result < min) { 803 if (Gflag) { 804 warnx("%s `%s' (%" PRId64 ") is less than the " 805 "minimum (%" PRId64 ").", desc, arg, result, min); 806 } else { 807 errx(1, "%s `%s' (%" PRId64 ") is less than the " 808 "minimum (%" PRId64 ").", desc, arg, result, min); 809 } 810 } 811 if (result > max) { 812 if (Gflag) { 813 warnx("%s `%s' (%" PRId64 ") is greater than the " 814 "maximum (%" PRId64 ").", desc, arg, result, max); 815 } else { 816 errx(1, "%s `%s' (%" PRId64 ") is greater than the " 817 "maximum (%" PRId64 ").", desc, arg, result, max); 818 } 819 } 820 return result; 821 } 822 823 #define NEWFS 1 824 #define MFS_MOUNT 2 825 #define BOTH NEWFS | MFS_MOUNT 826 827 struct help_strings { 828 int flags; 829 const char *str; 830 } const help_strings[] = { 831 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 832 { NEWFS, "-F \t\tcreate file system image in regular file" }, 833 { NEWFS, "-G \t\tmake sanity calculations non-fatal (testing only!)" }, 834 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 835 { BOTH, "-N \t\tdo not create file system, just print out " 836 "parameters" }, 837 { NEWFS, "-O N\t\tfilesystem format: 0 => 4.3BSD, 1 => FFSv1, 2 => FFSv2" }, 838 { NEWFS, "-S secsize\tsector size" }, 839 #ifdef COMPAT 840 { NEWFS, "-T disktype\tdisk type" }, 841 #endif 842 { BOTH, "-V verbose\toutput verbosity: 0 ==> none, 4 ==> max" }, 843 { NEWFS, "-Z \t\tpre-zero the image file" }, 844 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 845 { BOTH, "-b bsize\tblock size" }, 846 { BOTH, "-d maxbsize\tmaximum extent size" }, 847 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 848 }, 849 { BOTH, "-f fsize\tfrag size" }, 850 { NEWFS, "-g avgfilesize\taverage file size" }, 851 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 852 { BOTH, "-h avgfpdir\taverage files per directory" }, 853 { BOTH, "-i density\tnumber of bytes per inode" }, 854 { BOTH, "-m minfree\tminimum free space %%" }, 855 { BOTH, "-n inodes\tnumber of inodes (overrides -i density)" }, 856 { BOTH, "-o optim\toptimization preference (`space' or `time')" 857 }, 858 { BOTH, "-q (user|group) enable specified quota" }, 859 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 860 { BOTH, "-s fssize\tfile system size (sectors)" }, 861 { MFS_MOUNT, "-u username\tuser name of mount point" }, 862 { NEWFS, "-v volname\tApple UFS volume name" }, 863 { 0, NULL } 864 }; 865 866 static void 867 usage(void) 868 { 869 int match; 870 const struct help_strings *hs; 871 872 if (mfs) { 873 fprintf(stderr, 874 "usage: %s [ fsoptions ] special-device mount-point\n", 875 getprogname()); 876 } else 877 fprintf(stderr, 878 "usage: %s [ fsoptions ] special-device%s\n", 879 getprogname(), 880 #ifdef COMPAT 881 " [disk-type]"); 882 #else 883 ""); 884 #endif 885 fprintf(stderr, "where fsoptions are:\n"); 886 887 match = mfs ? MFS_MOUNT : NEWFS; 888 for (hs = help_strings; hs->flags != 0; hs++) 889 if (hs->flags & match) 890 fprintf(stderr, "\t%s\n", hs->str); 891 exit(1); 892 } 893
Indexes created Tue Oct 21 06:10:07 GMT 2025