newfs.c revision 1.93
1 /* $NetBSD: newfs.c,v 1.93 2006/08/27 18:27:49 christos 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\n\ 74 The Regents of the University of California. All rights reserved.\n"); 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 1.93 2006/08/27 18:27:49 christos 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/ffs/fs.h> 101 102 #include <ctype.h> 103 #include <disktab.h> 104 #include <err.h> 105 #include <errno.h> 106 #include <grp.h> 107 #include <limits.h> 108 #include <paths.h> 109 #include <pwd.h> 110 #include <signal.h> 111 #include <stdint.h> 112 #include <stdio.h> 113 #include <stdlib.h> 114 #include <string.h> 115 #include <syslog.h> 116 #include <unistd.h> 117 #include <util.h> 118 119 #include "mntopts.h" 120 #include "dkcksum.h" 121 #include "extern.h" 122 #include "partutil.h" 123 124 struct mntopt mopts[] = { 125 MOPT_STDOPTS, 126 MOPT_ASYNC, 127 MOPT_UPDATE, 128 MOPT_GETARGS, 129 MOPT_NOATIME, 130 { NULL }, 131 }; 132 133 static gid_t mfs_group(const char *); 134 static uid_t mfs_user(const char *); 135 static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *); 136 static void usage(void) __attribute__((__noreturn__)); 137 138 #define COMPAT /* allow non-labeled disks */ 139 140 #ifdef COMPAT 141 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 142 #else 143 const char lmsg[] = "%s: can't read disk label"; 144 #endif 145 146 /* 147 * The following two constants set the default block and fragment sizes. 148 * Both constants must be a power of 2 and meet the following constraints: 149 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 150 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 151 * DESBLKSIZE / DESFRAGSIZE <= 8 152 */ 153 /* 154 * For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, 155 * otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use 156 * L_DFL_*. 157 */ 158 #define SMALL_FSSIZE (20*1024*2) 159 #define S_DFL_FRAGSIZE 512 160 #define MEDIUM_FSSIZE (1000*1024*2) 161 #define M_DFL_FRAGSIZE 1024 162 #define L_DFL_FRAGSIZE 2048 163 #define DFL_FRAG_BLK 8 164 165 /* Apple requires the fragment size to be at least APPLEUFS_DIRBLKSIZ 166 * but the block size cannot be larger than Darwin's PAGE_SIZE. See 167 * the mount check in Darwin's ffs_mountfs for an explanation. 168 */ 169 #define APPLEUFS_DFL_FRAGSIZE APPLEUFS_DIRBLKSIZ /* 1024 */ 170 #define APPLEUFS_DFL_BLKSIZE 4096 /* default Darwin PAGE_SIZE */ 171 172 /* 173 * Default sector size. 174 */ 175 #define DFL_SECSIZE 512 176 177 /* 178 * MAXBLKPG determines the maximum number of data blocks which are 179 * placed in a single cylinder group. The default is one indirect 180 * block worth of data blocks. 181 */ 182 #define MAXBLKPG_UFS1(bsize) ((bsize) / sizeof(int32_t)) 183 #define MAXBLKPG_UFS2(bsize) ((bsize) / sizeof(int64_t)) 184 185 /* 186 * Each file system has a number of inodes statically allocated. 187 * We allocate one inode slot per NFPI fragments, expecting this 188 * to be far more than we will ever need. 189 */ 190 #define NFPI 4 191 192 193 int mfs; /* run as the memory based filesystem */ 194 int Nflag; /* run without writing file system */ 195 int Oflag = 1; /* format as an 4.3BSD file system */ 196 int verbosity; /* amount of printf() output */ 197 #define DEFAULT_VERBOSITY 3 /* traditional behavior */ 198 int64_t fssize; /* file system size */ 199 int sectorsize; /* bytes/sector */ 200 int fsize = 0; /* fragment size */ 201 int bsize = 0; /* block size */ 202 int maxbsize = 0; /* maximum clustering */ 203 int minfree = MINFREE; /* free space threshold */ 204 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 205 int density; /* number of bytes per inode */ 206 int num_inodes; /* number of inodes (overrides density) */ 207 int maxcontig = 0; /* max contiguous blocks to allocate */ 208 int maxbpg; /* maximum blocks per file in a cyl group */ 209 int avgfilesize = AVFILESIZ;/* expected average file size */ 210 int avgfpdir = AFPDIR; /* expected number of files per directory */ 211 int mntflags = 0; /* flags to be passed to mount */ 212 u_long memleft; /* virtual memory available */ 213 caddr_t membase; /* start address of memory based filesystem */ 214 int needswap; /* Filesystem not in native byte order */ 215 char *disktype = NULL; 216 int unlabeled; 217 char *appleufs_volname = 0; /* Apple UFS volume name */ 218 int isappleufs = 0; 219 220 char device[MAXPATHLEN]; 221 222 int 223 main(int argc, char *argv[]) 224 { 225 struct disk_geom geo; 226 struct dkwedge_info dkw; 227 struct statvfs *mp; 228 struct stat sb; 229 int ch, fsi, fso, len, n, Fflag, Iflag, Zflag; 230 char *cp, *s1, *s2, *special; 231 const char *opstring; 232 int byte_sized = 0; 233 #ifdef MFS 234 struct mfs_args args; 235 char mountfromname[100]; 236 pid_t pid, res; 237 struct statvfs sf; 238 int status; 239 #endif 240 mode_t mfsmode = 01777; /* default mode for a /tmp-type directory */ 241 uid_t mfsuid = 0; /* user root */ 242 gid_t mfsgid = 0; /* group wheel */ 243 mntoptparse_t mo; 244 245 cp = NULL; 246 fsi = fso = -1; 247 Fflag = Iflag = Zflag = 0; 248 verbosity = -1; 249 if (strstr(getprogname(), "mfs")) { 250 mfs = 1; 251 } else { 252 /* Undocumented, for ease of testing */ 253 if (argv[1] != NULL && !strcmp(argv[1], "-mfs")) { 254 argv++; 255 argc--; 256 mfs = 1; 257 } 258 } 259 260 opstring = mfs ? 261 "NT:V:a:b:d:e:f:g:h:i:m:n:o:p:s:u:" : 262 "B:FINO:S:T:V:Za:b:d:e:f:g:h:i:l:m:n:o:r:s:v:"; 263 while ((ch = getopt(argc, argv, opstring)) != -1) 264 switch (ch) { 265 case 'B': 266 if (strcmp(optarg, "be") == 0) { 267 #if BYTE_ORDER == LITTLE_ENDIAN 268 needswap = 1; 269 #endif 270 } else if (strcmp(optarg, "le") == 0) { 271 #if BYTE_ORDER == BIG_ENDIAN 272 needswap = 1; 273 #endif 274 } else 275 usage(); 276 break; 277 case 'F': 278 Fflag = 1; 279 break; 280 case 'I': 281 Iflag = 1; 282 break; 283 case 'N': 284 Nflag = 1; 285 if (verbosity == -1) 286 verbosity = DEFAULT_VERBOSITY; 287 break; 288 case 'O': 289 Oflag = strsuftoi64("format", optarg, 0, 2, NULL); 290 break; 291 case 'S': 292 /* XXX: non-512 byte sectors almost certainly don't work. */ 293 sectorsize = strsuftoi64("sector size", 294 optarg, 512, 65536, NULL); 295 if (sectorsize & (sectorsize - 1)) 296 errx(1, "sector size `%s' is not a power of 2.", 297 optarg); 298 break; 299 #ifdef COMPAT 300 case 'T': 301 disktype = optarg; 302 break; 303 #endif 304 case 'V': 305 verbosity = strsuftoi64("verbose", optarg, 0, 4, NULL); 306 break; 307 case 'Z': 308 Zflag = 1; 309 break; 310 case 'a': 311 maxcontig = strsuftoi64("maximum contiguous blocks", 312 optarg, 1, INT_MAX, NULL); 313 break; 314 case 'b': 315 bsize = strsuftoi64("block size", 316 optarg, MINBSIZE, MAXBSIZE, NULL); 317 break; 318 case 'd': 319 maxbsize = strsuftoi64("maximum extent size", 320 optarg, 0, INT_MAX, NULL); 321 break; 322 case 'e': 323 maxbpg = strsuftoi64( 324 "blocks per file in a cylinder group", 325 optarg, 1, INT_MAX, NULL); 326 break; 327 case 'f': 328 fsize = strsuftoi64("fragment size", 329 optarg, 1, MAXBSIZE, NULL); 330 break; 331 case 'g': 332 if (mfs) 333 mfsgid = mfs_group(optarg); 334 else { 335 avgfilesize = strsuftoi64("average file size", 336 optarg, 1, INT_MAX, NULL); 337 } 338 break; 339 case 'h': 340 avgfpdir = strsuftoi64("expected files per directory", 341 optarg, 1, INT_MAX, NULL); 342 break; 343 case 'i': 344 density = strsuftoi64("bytes per inode", 345 optarg, 1, INT_MAX, NULL); 346 break; 347 case 'm': 348 minfree = strsuftoi64("free space %", 349 optarg, 0, 99, NULL); 350 break; 351 case 'n': 352 num_inodes = strsuftoi64("number of inodes", 353 optarg, 1, INT_MAX, NULL); 354 break; 355 case 'o': 356 if (mfs) { 357 mo = getmntopts(optarg, mopts, &mntflags, 0); 358 if (mo == NULL) 359 err(1, "getmntopts"); 360 freemntopts(mo); 361 } else { 362 if (strcmp(optarg, "space") == 0) 363 opt = FS_OPTSPACE; 364 else if (strcmp(optarg, "time") == 0) 365 opt = FS_OPTTIME; 366 else 367 errx(1, "%s %s", 368 "unknown optimization preference: ", 369 "use `space' or `time'."); 370 } 371 break; 372 case 'p': 373 /* mfs only */ 374 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 375 errx(1, "bad mode `%s'", optarg); 376 break; 377 case 's': 378 fssize = strsuftoi64("file system size", 379 optarg, INT64_MIN, INT64_MAX, &byte_sized); 380 break; 381 case 'u': 382 /* mfs only */ 383 mfsuid = mfs_user(optarg); 384 break; 385 case 'v': 386 appleufs_volname = optarg; 387 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 388 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 389 if (appleufs_volname[0] == '\0') 390 errx(1,"Apple UFS volume name cannot be zero length"); 391 isappleufs = 1; 392 break; 393 case '?': 394 default: 395 usage(); 396 } 397 argc -= optind; 398 argv += optind; 399 400 if (verbosity == -1) 401 /* Default to not showing CG info if mfs */ 402 verbosity = mfs ? 0 : DEFAULT_VERBOSITY; 403 404 #ifdef MFS 405 /* This is enough to get through the correct kernel code paths */ 406 memset(&args, 0, sizeof args); 407 args.fspec = mountfromname; 408 if (mntflags & (MNT_GETARGS | MNT_UPDATE)) { 409 if ((mntflags & MNT_GETARGS) == 0) 410 mntflags |= MNT_ASYNC; 411 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) 412 err(1, "mount `%s' failed", argv[1]); 413 if (mntflags & MNT_GETARGS) 414 printf("base=%p, size=%ld\n", args.base, args.size); 415 exit(0); 416 } 417 #endif 418 419 if (argc != 2 && (mfs || argc != 1)) 420 usage(); 421 422 memset(&sb, 0, sizeof sb); 423 special = argv[0]; 424 if (Fflag || mfs) { 425 /* 426 * It's a file system image or an MFS, 427 * no label, use fixed default for sectorsize. 428 */ 429 if (sectorsize == 0) 430 sectorsize = DFL_SECSIZE; 431 432 if (mfs) { 433 /* Default filesystem size to that of supplied device */ 434 if (fssize == 0) 435 stat(special, &sb); 436 } else { 437 /* creating image in a regular file */ 438 int fl; 439 if (Nflag) 440 fl = O_RDONLY; 441 else { 442 if (fssize > 0) 443 fl = O_RDWR | O_CREAT; 444 else 445 fl = O_RDWR; 446 } 447 fsi = open(special, fl, 0777); 448 if (fsi == -1) 449 err(1, "can't open file %s", special); 450 if (fstat(fsi, &sb) == -1) 451 err(1, "can't fstat opened %s", special); 452 if (!Nflag) 453 fso = fsi; 454 } 455 } else { /* !Fflag && !mfs */ 456 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 457 special = device; 458 if (fsi < 0 || fstat(fsi, &sb) == -1) 459 err(1, "%s: open for read", special); 460 461 if (!Nflag) { 462 fso = open(special, O_WRONLY, 0); 463 if (fso < 0) 464 err(1, "%s: open for write", special); 465 466 /* Bail if target special is mounted */ 467 n = getmntinfo(&mp, MNT_NOWAIT); 468 if (n == 0) 469 err(1, "%s: getmntinfo", special); 470 471 len = sizeof(_PATH_DEV) - 1; 472 s1 = special; 473 if (strncmp(_PATH_DEV, s1, len) == 0) 474 s1 += len; 475 476 while (--n >= 0) { 477 s2 = mp->f_mntfromname; 478 if (strncmp(_PATH_DEV, s2, len) == 0) { 479 s2 += len - 1; 480 *s2 = 'r'; 481 } 482 if (strcmp(s1, s2) == 0 || 483 strcmp(s1, &s2[1]) == 0) 484 errx(1, "%s is mounted on %s", 485 special, mp->f_mntonname); 486 ++mp; 487 } 488 } 489 490 #ifdef COMPAT 491 if (disktype == NULL) 492 disktype = argv[1]; 493 #endif 494 if (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1) 495 errx(1, lmsg, special); 496 unlabeled = disktype != NULL; 497 498 if (sectorsize == 0) { 499 sectorsize = geo.dg_secsize; 500 if (sectorsize <= 0) 501 errx(1, "no default sector size"); 502 } 503 504 if (dkw.dkw_parent[0]) { 505 if (dkw.dkw_size == 0) 506 errx(1, "%s partition is unavailable", special); 507 508 if (strcmp(dkw.dkw_ptype, DKW_PTYPE_APPLEUFS) == 0) 509 isappleufs = 1; 510 511 if (!Iflag) { 512 static const char m[] = 513 "%s partition type is not `%s'"; 514 if (isappleufs) { 515 if (strcmp(dkw.dkw_ptype, 516 DKW_PTYPE_APPLEUFS)) 517 errx(1, m, 518 special, "Apple UFS"); 519 } else { 520 if (strcmp(dkw.dkw_ptype, 521 DKW_PTYPE_FFS)) 522 errx(1, m, special, "4.2BSD"); 523 } 524 } 525 } /* !Fflag && !mfs */ 526 } 527 528 if (byte_sized) 529 fssize /= sectorsize; 530 if (fssize <= 0) { 531 if (sb.st_size != 0) 532 fssize += sb.st_size / sectorsize; 533 else 534 fssize += dkw.dkw_size; 535 if (fssize <= 0) 536 errx(1, "Unable to determine file system size"); 537 } 538 539 if (dkw.dkw_parent[0] && fssize > dkw.dkw_size) 540 errx(1, "size %" PRIu64 " exceeds maximum file system size on " 541 "`%s' of %" PRIu64 " sectors", 542 fssize, special, dkw.dkw_size); 543 544 /* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */ 545 if (Fflag && fso != -1 546 && ftruncate(fso, (off_t)fssize * sectorsize) == -1) 547 err(1, "can't ftruncate %s to %" PRId64, special, fssize); 548 549 if (Zflag && fso != -1) { /* pre-zero (and de-sparce) the file */ 550 char *buf; 551 int bufsize, i; 552 off_t bufrem; 553 struct statvfs sfs; 554 555 if (fstatvfs(fso, &sfs) == -1) { 556 warn("can't fstatvfs `%s'", special); 557 bufsize = 8192; 558 } else 559 bufsize = sfs.f_iosize; 560 561 if ((buf = calloc(1, bufsize)) == NULL) 562 err(1, "can't malloc buffer of %d", 563 bufsize); 564 bufrem = fssize * sectorsize; 565 if (verbosity > 0) 566 printf( "Creating file system image in `%s', " 567 "size %lld bytes, in %d byte chunks.\n", 568 special, (long long)bufrem, bufsize); 569 while (bufrem > 0) { 570 i = write(fso, buf, MIN(bufsize, bufrem)); 571 if (i == -1) 572 err(1, "writing image"); 573 bufrem -= i; 574 } 575 free(buf); 576 } 577 578 /* Sort out fragment and block sizes */ 579 if (fsize == 0) { 580 fsize = bsize / DFL_FRAG_BLK; 581 if (fsize <= 0) { 582 if (isappleufs) { 583 fsize = APPLEUFS_DFL_FRAGSIZE; 584 } else { 585 if (fssize < SMALL_FSSIZE) 586 fsize = S_DFL_FRAGSIZE; 587 else if (fssize < MEDIUM_FSSIZE) 588 fsize = M_DFL_FRAGSIZE; 589 else 590 fsize = L_DFL_FRAGSIZE; 591 if (fsize < sectorsize) 592 fsize = sectorsize; 593 } 594 } 595 } 596 if (bsize <= 0) { 597 if (isappleufs) 598 bsize = APPLEUFS_DFL_BLKSIZE; 599 else 600 bsize = DFL_FRAG_BLK * fsize; 601 } 602 603 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 604 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 605 fsize, APPLEUFS_DFL_FRAGSIZE); 606 } 607 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 608 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 609 bsize, APPLEUFS_DFL_BLKSIZE); 610 } 611 612 /* 613 * Maxcontig sets the default for the maximum number of blocks 614 * that may be allocated sequentially. With filesystem clustering 615 * it is possible to allocate contiguous blocks up to the maximum 616 * transfer size permitted by the controller or buffering. 617 */ 618 if (maxcontig == 0) 619 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 620 if (density == 0) 621 density = NFPI * fsize; 622 if (minfree < MINFREE && opt != FS_OPTSPACE) { 623 warnx("%s %s %d%%", "Warning: changing optimization to space", 624 "because minfree is less than", MINFREE); 625 opt = FS_OPTSPACE; 626 } 627 if (maxbpg == 0) { 628 if (Oflag <= 1) 629 maxbpg = MAXBLKPG_UFS1(bsize); 630 else 631 maxbpg = MAXBLKPG_UFS2(bsize); 632 } 633 mkfs(special, fsi, fso, mfsmode, mfsuid, mfsgid); 634 if (fsi != -1 && fsi != fso) 635 close(fsi); 636 if (fso != -1) 637 close(fso); 638 #ifdef MFS 639 if (mfs) { 640 641 switch (pid = fork()) { 642 case -1: 643 perror("mfs"); 644 exit(10); 645 case 0: 646 (void)snprintf(mountfromname, sizeof(mountfromname), 647 "mfs:%d", getpid()); 648 break; 649 default: 650 (void)snprintf(mountfromname, sizeof(mountfromname), 651 "mfs:%d", pid); 652 for (;;) { 653 /* 654 * spin until the mount succeeds 655 * or the child exits 656 */ 657 usleep(1); 658 659 /* 660 * XXX Here is a race condition: another process 661 * can mount a filesystem which hides our 662 * ramdisk before we see the success. 663 */ 664 if (statvfs(argv[1], &sf) < 0) 665 err(88, "statvfs %s", argv[1]); 666 if (!strcmp(sf.f_mntfromname, mountfromname) && 667 !strncmp(sf.f_mntonname, argv[1], 668 MNAMELEN) && 669 !strcmp(sf.f_fstypename, "mfs")) 670 exit(0); 671 672 res = waitpid(pid, &status, WNOHANG); 673 if (res == -1) 674 err(11, "waitpid"); 675 if (res != pid) 676 continue; 677 if (WIFEXITED(status)) { 678 if (WEXITSTATUS(status) == 0) 679 exit(0); 680 errx(1, "%s: mount: %s", argv[1], 681 strerror(WEXITSTATUS(status))); 682 } else 683 errx(11, "abnormal termination"); 684 } 685 /* NOTREACHED */ 686 } 687 688 (void) setsid(); 689 (void) close(0); 690 (void) close(1); 691 (void) close(2); 692 (void) chdir("/"); 693 694 args.base = membase; 695 args.size = fssize * sectorsize; 696 if (mount(MOUNT_MFS, argv[1], mntflags | MNT_ASYNC, &args) < 0) 697 exit(errno); /* parent prints message */ 698 } 699 #endif 700 exit(0); 701 } 702 703 static gid_t 704 mfs_group(const char *gname) 705 { 706 struct group *gp; 707 708 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 709 errx(1, "unknown gname %s", gname); 710 return gp ? gp->gr_gid : atoi(gname); 711 } 712 713 static uid_t 714 mfs_user(const char *uname) 715 { 716 struct passwd *pp; 717 718 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 719 errx(1, "unknown user %s", uname); 720 return pp ? pp->pw_uid : atoi(uname); 721 } 722 723 static int64_t 724 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 725 { 726 int64_t result, r1; 727 int shift = 0; 728 char *ep; 729 730 errno = 0; 731 r1 = strtoll(arg, &ep, 10); 732 if (ep[0] != '\0' && ep[1] != '\0') 733 errx(1, "%s `%s' is not a valid number.", desc, arg); 734 switch (ep[0]) { 735 case '\0': 736 case 's': case 'S': 737 if (num_suffix != NULL) 738 *num_suffix = 0; 739 break; 740 case 'g': case 'G': 741 shift += 10; 742 /* FALLTHROUGH */ 743 case 'm': case 'M': 744 shift += 10; 745 /* FALLTHROUGH */ 746 case 'k': case 'K': 747 shift += 10; 748 /* FALLTHROUGH */ 749 case 'b': case 'B': 750 if (num_suffix != NULL) 751 *num_suffix = 1; 752 break; 753 default: 754 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 755 } 756 result = r1 << shift; 757 if (errno == ERANGE || result >> shift != r1) 758 errx(1, "%s `%s' is too large to convert.", desc, arg); 759 if (result < min) 760 errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").", 761 desc, arg, result, min); 762 if (result > max) 763 errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").", 764 desc, arg, result, max); 765 return result; 766 } 767 768 #define NEWFS 1 769 #define MFS_MOUNT 2 770 #define BOTH NEWFS | MFS_MOUNT 771 772 struct help_strings { 773 int flags; 774 const char *str; 775 } const help_strings[] = { 776 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 777 { NEWFS, "-F \t\tcreate file system image in regular file" }, 778 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 779 { BOTH, "-N \t\tdo not create file system, just print out " 780 "parameters" }, 781 { NEWFS, "-O N\t\tfilesystem format: 0 ==> 4.3BSD, 1 ==> FFS, 2 ==> UFS2" }, 782 { NEWFS, "-S secsize\tsector size" }, 783 #ifdef COMPAT 784 { NEWFS, "-T disktype\tdisk type" }, 785 #endif 786 { BOTH, "-V verbose\toutput verbosity: 0 ==> none, 4 ==> max" }, 787 { NEWFS, "-Z \t\tpre-zero the image file" }, 788 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 789 { BOTH, "-b bsize\tblock size" }, 790 { BOTH, "-d maxbsize\tmaximum extent size" }, 791 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 792 }, 793 { BOTH, "-f fsize\tfrag size" }, 794 { NEWFS, "-g avgfilesize\taverage file size" }, 795 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 796 { BOTH, "-h avgfpdir\taverage files per directory" }, 797 { BOTH, "-i density\tnumber of bytes per inode" }, 798 { BOTH, "-m minfree\tminimum free space %%" }, 799 { BOTH, "-n inodes\tnumber of inodes (overrides -i density)" }, 800 { BOTH, "-o optim\toptimization preference (`space' or `time')" 801 }, 802 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 803 { BOTH, "-s fssize\tfile system size (sectors)" }, 804 { MFS_MOUNT, "-u username\tuser name of mount point" }, 805 { NEWFS, "-v volname\tApple UFS volume name" }, 806 { 0, NULL } 807 }; 808 809 static void 810 usage(void) 811 { 812 int match; 813 const struct help_strings *hs; 814 815 if (mfs) { 816 fprintf(stderr, 817 "usage: %s [ fsoptions ] special-device mount-point\n", 818 getprogname()); 819 } else 820 fprintf(stderr, 821 "usage: %s [ fsoptions ] special-device%s\n", 822 getprogname(), 823 #ifdef COMPAT 824 " [disk-type]"); 825 #else 826 ""); 827 #endif 828 fprintf(stderr, "where fsoptions are:\n"); 829 830 match = mfs ? MFS_MOUNT : NEWFS; 831 for (hs = help_strings; hs->flags != 0; hs++) 832 if (hs->flags & match) 833 fprintf(stderr, "\t%s\n", hs->str); 834 exit(1); 835 } 836
Indexes created Fri Sep 26 08:10:20 GMT 2025