newfs.c revision 1.64
1 /* $NetBSD: newfs.c,v 1.64 2003/04/02 10:39:30 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 2002 Networks Associates Technology, Inc. 5 * All rights reserved. 6 * 7 * This software was developed for the FreeBSD Project by Marshall 8 * Kirk McKusick and Network Associates Laboratories, the Security 9 * Research Division of Network Associates, Inc. under DARPA/SPAWAR 10 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 11 * research program 12 * 13 * Copyright (c) 1983, 1989, 1993, 1994 14 * The Regents of the University of California. All rights reserved. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 */ 44 45 #include <sys/cdefs.h> 46 #ifndef lint 47 __COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1993, 1994\n\ 48 The Regents of the University of California. All rights reserved.\n"); 49 #endif /* not lint */ 50 51 #ifndef lint 52 #if 0 53 static char sccsid[] = "@(#)newfs.c 8.13 (Berkeley) 5/1/95"; 54 #else 55 __RCSID("$NetBSD: newfs.c,v 1.64 2003/04/02 10:39:30 fvdl Exp $"); 56 #endif 57 #endif /* not lint */ 58 59 /* 60 * newfs: friendly front end to mkfs 61 */ 62 #include <sys/param.h> 63 #include <sys/ioctl.h> 64 #include <sys/disklabel.h> 65 #include <sys/file.h> 66 #include <sys/mount.h> 67 #include <sys/sysctl.h> 68 #include <sys/wait.h> 69 70 #include <ufs/ufs/dir.h> 71 #include <ufs/ufs/dinode.h> 72 #include <ufs/ufs/ufsmount.h> 73 #include <ufs/ffs/fs.h> 74 75 #include <ctype.h> 76 #include <disktab.h> 77 #include <err.h> 78 #include <errno.h> 79 #include <grp.h> 80 #include <paths.h> 81 #include <pwd.h> 82 #include <signal.h> 83 #include <stdio.h> 84 #include <stdlib.h> 85 #include <string.h> 86 #include <syslog.h> 87 #include <unistd.h> 88 #include <util.h> 89 90 #include "mntopts.h" 91 #include "dkcksum.h" 92 #include "extern.h" 93 94 struct mntopt mopts[] = { 95 MOPT_STDOPTS, 96 MOPT_ASYNC, 97 MOPT_UPDATE, 98 MOPT_GETARGS, 99 MOPT_NOATIME, 100 { NULL }, 101 }; 102 103 static struct disklabel *getdisklabel(char *, int); 104 static void rewritelabel(char *, int, struct disklabel *); 105 static gid_t mfs_group(const char *); 106 static uid_t mfs_user(const char *); 107 static int strsuftoi(const char *, const char *, int, int); 108 static void usage(void); 109 int main(int, char *[]); 110 111 #define COMPAT /* allow non-labeled disks */ 112 113 /* 114 * The following two constants set the default block and fragment sizes. 115 * Both constants must be a power of 2 and meet the following constraints: 116 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 117 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 118 * DESBLKSIZE / DESFRAGSIZE <= 8 119 */ 120 /* 121 * For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, 122 * otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use 123 * L_DFL_*. 124 */ 125 #define SMALL_FSSIZE (20*1024*2) 126 #define S_DFL_FRAGSIZE 512 127 #define S_DFL_BLKSIZE 4096 128 #define MEDIUM_FSSIZE (1000*1024*2) 129 #define M_DFL_FRAGSIZE 1024 130 #define M_DFL_BLKSIZE 8192 131 #define L_DFL_FRAGSIZE 2048 132 #define L_DFL_BLKSIZE 16384 133 134 /* 135 * Default sector size. 136 */ 137 #define DFL_SECSIZE 512 138 139 /* 140 * Cylinder groups may have up to many cylinders. The actual 141 * number used depends upon how much information can be stored 142 * on a single cylinder. The default is to use 16 cylinders 143 * per group. 144 */ 145 #define MAXBLKSPERCG 0x7fffffff /* desired fs_fpg ("infinity") */ 146 147 /* 148 * MAXBLKPG determines the maximum number of data blocks which are 149 * placed in a single cylinder group. The default is one indirect 150 * block worth of data blocks. 151 */ 152 #define MAXBLKPG_UFS1(bsize) ((bsize) / sizeof(int32_t)) 153 #define MAXBLKPG_UFS2(bsize) ((bsize) / sizeof(int64_t)) 154 155 /* 156 * Each file system has a number of inodes statically allocated. 157 * We allocate one inode slot per NFPI fragments, expecting this 158 * to be far more than we will ever need. 159 */ 160 #define NFPI 4 161 162 163 int mfs; /* run as the memory based filesystem */ 164 int Nflag; /* run without writing file system */ 165 int Oflag = 1; /* format as an 4.3BSD file system */ 166 int64_t fssize; /* file system size */ 167 int sectorsize; /* bytes/sector */ 168 int fsize = 0; /* fragment size */ 169 int bsize = 0; /* block size */ 170 int maxbsize = 0; /* maximum clustering */ 171 int maxblkspercg = MAXBLKSPERCG; /* maximum blocks per cylinder group */ 172 int minfree = MINFREE; /* free space threshold */ 173 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 174 int density; /* number of bytes per inode */ 175 int maxcontig = 0; /* max contiguous blocks to allocate */ 176 int maxbpg; /* maximum blocks per file in a cyl group */ 177 int avgfilesize = AVFILESIZ;/* expected average file size */ 178 int avgfpdir = AFPDIR; /* expected number of files per directory */ 179 int bbsize = BBSIZE; /* boot block size */ 180 int sbsize = SBLOCKSIZE; /* superblock size */ 181 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 182 u_long memleft; /* virtual memory available */ 183 caddr_t membase; /* start address of memory based filesystem */ 184 int needswap; /* Filesystem not in native byte order */ 185 #ifdef COMPAT 186 char *disktype; 187 int unlabeled; 188 #endif 189 char *appleufs_volname = 0; /* Apple UFS volume name */ 190 int isappleufs = 0; 191 192 char device[MAXPATHLEN]; 193 194 int 195 main(int argc, char *argv[]) 196 { 197 struct partition *pp; 198 struct disklabel *lp; 199 struct disklabel mfsfakelabel; 200 struct partition oldpartition; 201 struct statfs *mp; 202 int ch, fsi, fso, len, maxpartitions, n, Fflag, Iflag, Zflag; 203 char *cp, *endp, *s1, *s2, *special; 204 const char *opstring; 205 long long llsize; 206 int dfl_fragsize, dfl_blksize; 207 #ifdef MFS 208 char mountfromname[100]; 209 pid_t pid, res; 210 struct statfs sf; 211 int status; 212 #endif 213 mode_t mfsmode; 214 uid_t mfsuid; 215 gid_t mfsgid; 216 217 cp = NULL; 218 fsi = fso = -1; 219 Fflag = Iflag = Zflag = 0; 220 if (strstr(getprogname(), "mfs")) { 221 mfs = 1; 222 mfsmode = 01777; /* default mode for a /tmp-type directory */ 223 mfsuid = 0; /* user root */ 224 mfsgid = 0; /* group wheel */ 225 Nflag++; 226 } 227 228 maxpartitions = getmaxpartitions(); 229 if (maxpartitions > 26) 230 errx(1, "insane maxpartitions value %d", maxpartitions); 231 232 opstring = mfs ? 233 "NT:a:b:c:d:e:f:g:h:i:m:o:p:s:u:" : 234 "B:FINO:S:T:Za:b:c:d:e:f:g:h:i:l:m:o:p:r:s:u:v:"; 235 while ((ch = getopt(argc, argv, opstring)) != -1) 236 switch (ch) { 237 case 'B': 238 if (strcmp(optarg, "be") == 0) { 239 #if BYTE_ORDER == LITTLE_ENDIAN 240 needswap = 1; 241 #endif 242 } else if (strcmp(optarg, "le") == 0) { 243 #if BYTE_ORDER == BIG_ENDIAN 244 needswap = 1; 245 #endif 246 } else 247 usage(); 248 break; 249 case 'F': 250 Fflag = 1; 251 break; 252 case 'I': 253 Iflag = 1; 254 break; 255 case 'N': 256 Nflag = 1; 257 break; 258 case 'O': 259 Oflag = strsuftoi("format", optarg, 0, 2); 260 break; 261 case 'S': 262 sectorsize = strsuftoi("sector size", 263 optarg, 1, INT_MAX); 264 break; 265 #ifdef COMPAT 266 case 'T': 267 disktype = optarg; 268 break; 269 #endif 270 case 'Z': 271 Zflag = 1; 272 break; 273 case 'a': 274 maxcontig = strsuftoi("maximum contiguous blocks", 275 optarg, 1, INT_MAX); 276 break; 277 case 'b': 278 bsize = strsuftoi("block size", 279 optarg, MINBSIZE, MAXBSIZE); 280 break; 281 case 'c': 282 maxblkspercg = strsuftoi("max. blocks per group", 283 optarg, 1, INT_MAX); 284 break; 285 case 'd': 286 maxbsize = strsuftoi("maximum extent size", 287 optarg, 0, INT_MAX); 288 break; 289 case 'e': 290 maxbpg = strsuftoi( 291 "blocks per file in a cylinder group", 292 optarg, 1, INT_MAX); 293 break; 294 case 'f': 295 fsize = strsuftoi("fragment size", 296 optarg, 1, MAXBSIZE); 297 break; 298 case 'g': 299 if (mfs) 300 mfsgid = mfs_group(optarg); 301 else { 302 avgfilesize = strsuftoi("average file size", 303 optarg, 1, INT_MAX); 304 } 305 break; 306 case 'h': 307 avgfpdir = strsuftoi("expected files per directory", 308 optarg, 1, INT_MAX); 309 break; 310 case 'i': 311 density = strsuftoi("bytes per inode", 312 optarg, 1, INT_MAX); 313 break; 314 case 'm': 315 minfree = strsuftoi("free space %", 316 optarg, 0, 99); 317 break; 318 case 'o': 319 if (mfs) 320 getmntopts(optarg, mopts, &mntflags, 0); 321 else { 322 if (strcmp(optarg, "space") == 0) 323 opt = FS_OPTSPACE; 324 else if (strcmp(optarg, "time") == 0) 325 opt = FS_OPTTIME; 326 else 327 errx(1, "%s %s", 328 "unknown optimization preference: ", 329 "use `space' or `time'."); 330 } 331 break; 332 case 'p': 333 if (mfs) { 334 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 335 errx(1, "bad mode `%s'", optarg); 336 } else 337 errx(1, "unknown option 'p'"); 338 break; 339 case 's': 340 llsize = strtoll(optarg, &endp, 10); 341 if (endp[0] != '\0' && endp[1] != '\0') 342 llsize = -1; 343 else { 344 int ssiz; 345 346 ssiz = (sectorsize ? sectorsize : DFL_SECSIZE); 347 switch (tolower((unsigned char)endp[0])) { 348 case 'b': 349 llsize /= ssiz; 350 break; 351 case 'k': 352 llsize *= 1024 / ssiz; 353 break; 354 case 'm': 355 llsize *= 1024 * 1024 / ssiz; 356 break; 357 case 'g': 358 llsize *= 1024 * 1024 * 1024 / ssiz; 359 break; 360 case '\0': 361 case 's': 362 break; 363 default: 364 llsize = -1; 365 } 366 } 367 if (llsize > LLONG_MAX) 368 errx(1, "file system size `%s' is too large.", 369 optarg); 370 if (llsize <= 0) 371 errx(1, 372 "`%s' is not a valid number for file system size.", 373 optarg); 374 fssize = llsize; 375 break; 376 case 'u': 377 if (mfs) 378 mfsuid = mfs_user(optarg); 379 else 380 errx(1, "deprecated option 'u'"); 381 break; 382 case 'v': 383 appleufs_volname = optarg; 384 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 385 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 386 if (appleufs_volname[0] == '\0') 387 errx(1,"Apple UFS volume name cannot be zero length"); 388 isappleufs = 1; 389 break; 390 case '?': 391 default: 392 usage(); 393 } 394 argc -= optind; 395 argv += optind; 396 if (mntflags & MNT_GETARGS) 397 goto doit; 398 399 if (argc != 2 && (mfs || argc != 1)) 400 usage(); 401 402 special = argv[0]; 403 if (Fflag || mfs) { 404 /* 405 * it's a file system image or an MFS, so fake up a label. 406 * XXX 407 */ 408 if (!sectorsize) 409 sectorsize = DFL_SECSIZE; 410 411 if (Fflag && !Nflag) { /* creating image in a regular file */ 412 if (fssize == 0) 413 errx(1, "need to specify size when using -F"); 414 fso = open(special, O_RDWR | O_CREAT | O_TRUNC, 0777); 415 if (fso == -1) 416 err(1, "can't open file %s", special); 417 if ((fsi = dup(fso)) == -1) 418 err(1, "can't dup(2) image fd"); 419 /* XXXLUKEM: only ftruncate() regular files ? */ 420 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 421 err(1, "can't resize %s to %lld", 422 special, (long long)fssize); 423 424 if (Zflag) { /* pre-zero the file */ 425 char *buf; 426 int bufsize, i; 427 off_t bufrem; 428 struct statfs sfs; 429 430 if (fstatfs(fso, &sfs) == -1) { 431 warn("can't fstatfs `%s'", special); 432 bufsize = 8192; 433 } else 434 bufsize = sfs.f_iosize; 435 436 if ((buf = calloc(1, bufsize)) == NULL) 437 err(1, "can't malloc buffer of %d", 438 bufsize); 439 bufrem = fssize * sectorsize; 440 printf( 441 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 442 special, (long long)bufrem, bufsize); 443 while (bufrem > 0) { 444 i = write(fso, buf, 445 MIN(bufsize, bufrem)); 446 if (i == -1) 447 err(1, "writing image"); 448 bufrem -= i; 449 } 450 } 451 452 } 453 454 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 455 mfsfakelabel.d_secsize = sectorsize; 456 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 457 mfsfakelabel.d_ntracks = 16; 458 mfsfakelabel.d_ncylinders = 16; 459 mfsfakelabel.d_secpercyl = 460 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 461 mfsfakelabel.d_secperunit = 462 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 463 mfsfakelabel.d_rpm = 10000; 464 mfsfakelabel.d_interleave = 1; 465 mfsfakelabel.d_npartitions = 1; 466 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 467 mfsfakelabel.d_partitions[0].p_fsize = 1024; 468 mfsfakelabel.d_partitions[0].p_frag = 8; 469 mfsfakelabel.d_partitions[0].p_cpg = 16; 470 471 lp = &mfsfakelabel; 472 pp = &mfsfakelabel.d_partitions[0]; 473 } else { /* !Fflag && !mfs */ 474 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 475 special = device; 476 if (fsi < 0) 477 err(1, "%s: open for read", special); 478 479 if (Nflag) { 480 fso = -1; 481 } else { 482 fso = open(special, O_WRONLY); 483 if (fso < 0) 484 err(1, "%s: open for write", special); 485 486 /* Bail if target special is mounted */ 487 n = getmntinfo(&mp, MNT_NOWAIT); 488 if (n == 0) 489 err(1, "%s: getmntinfo", special); 490 491 len = sizeof(_PATH_DEV) - 1; 492 s1 = special; 493 if (strncmp(_PATH_DEV, s1, len) == 0) 494 s1 += len; 495 496 while (--n >= 0) { 497 s2 = mp->f_mntfromname; 498 if (strncmp(_PATH_DEV, s2, len) == 0) { 499 s2 += len - 1; 500 *s2 = 'r'; 501 } 502 if (strcmp(s1, s2) == 0 || 503 strcmp(s1, &s2[1]) == 0) 504 errx(1, "%s is mounted on %s", 505 special, mp->f_mntonname); 506 ++mp; 507 } 508 } 509 cp = strchr(argv[0], '\0') - 1; 510 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 511 && !isdigit(*cp))) 512 errx(1, "can't figure out file system partition"); 513 #ifdef COMPAT 514 if (disktype == NULL) 515 disktype = argv[1]; 516 #endif 517 lp = getdisklabel(special, fsi); 518 if (isdigit(*cp)) 519 pp = &lp->d_partitions[0]; 520 else 521 pp = &lp->d_partitions[*cp - 'a']; 522 if (pp->p_size == 0) 523 errx(1, "`%c' partition is unavailable", *cp); 524 if (pp->p_fstype == FS_APPLEUFS) 525 isappleufs = 1; 526 if (isappleufs) { 527 if (!Iflag && (pp->p_fstype != FS_APPLEUFS)) 528 errx(1, "`%c' partition type is not `Apple UFS'", *cp); 529 } else { 530 if (!Iflag && (pp->p_fstype != FS_BSDFFS)) 531 errx(1, "`%c' partition type is not `4.2BSD'", *cp); 532 } 533 } /* !Fflag && !mfs */ 534 535 if (fssize == 0) 536 fssize = pp->p_size; 537 if (fssize > pp->p_size && !mfs && !Fflag) 538 errx(1, "maximum file system size on the `%c' partition is %d", 539 *cp, pp->p_size); 540 if (sectorsize == 0) { 541 sectorsize = lp->d_secsize; 542 if (sectorsize <= 0) 543 errx(1, "no default sector size"); 544 } 545 546 if (fssize < SMALL_FSSIZE) { 547 dfl_fragsize = S_DFL_FRAGSIZE; 548 dfl_blksize = S_DFL_BLKSIZE; 549 } else if (fssize < MEDIUM_FSSIZE) { 550 dfl_fragsize = M_DFL_FRAGSIZE; 551 dfl_blksize = M_DFL_BLKSIZE; 552 } else { 553 dfl_fragsize = L_DFL_FRAGSIZE; 554 dfl_blksize = L_DFL_BLKSIZE; 555 } 556 557 if (fsize == 0) { 558 fsize = pp->p_fsize; 559 if (fsize <= 0) 560 fsize = MAX(dfl_fragsize, lp->d_secsize); 561 } 562 if (bsize == 0) { 563 bsize = pp->p_frag * pp->p_fsize; 564 if (bsize <= 0) 565 bsize = MIN(dfl_blksize, 8 * fsize); 566 } 567 /* 568 * Maxcontig sets the default for the maximum number of blocks 569 * that may be allocated sequentially. With filesystem clustering 570 * it is possible to allocate contiguous blocks up to the maximum 571 * transfer size permitted by the controller or buffering. 572 */ 573 if (maxcontig == 0) 574 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 575 if (density == 0) 576 density = NFPI * fsize; 577 if (minfree < MINFREE && opt != FS_OPTSPACE) { 578 warnx("%s %s %d%%", "Warning: changing optimization to space", 579 "because minfree is less than", MINFREE); 580 opt = FS_OPTSPACE; 581 } 582 if (maxbpg == 0) { 583 if (Oflag <= 1) 584 maxbpg = MAXBLKPG_UFS1(bsize); 585 else 586 maxbpg = MAXBLKPG_UFS2(bsize); 587 } 588 #ifdef notdef /* label may be 0 if faked up by kernel */ 589 bbsize = lp->d_bbsize; 590 sbsize = lp->d_sbsize; 591 #endif 592 oldpartition = *pp; 593 mkfs(pp, special, fsi, fso, mfsmode, mfsuid, mfsgid); 594 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 595 rewritelabel(special, fso, lp); 596 if (!Nflag) 597 close(fso); 598 close(fsi); 599 #ifdef MFS 600 if (mfs) { 601 struct mfs_args args; 602 603 switch (pid = fork()) { 604 case -1: 605 perror("mfs"); 606 exit(10); 607 case 0: 608 (void)snprintf(mountfromname, sizeof(mountfromname), 609 "mfs:%d", getpid()); 610 break; 611 default: 612 (void)snprintf(mountfromname, sizeof(mountfromname), 613 "mfs:%d", pid); 614 for (;;) { 615 /* 616 * spin until the mount succeeds 617 * or the child exits 618 */ 619 usleep(1); 620 621 /* 622 * XXX Here is a race condition: another process 623 * can mount a filesystem which hides our 624 * ramdisk before we see the success. 625 */ 626 if (statfs(argv[1], &sf) < 0) 627 err(88, "statfs %s", argv[1]); 628 if (!strcmp(sf.f_mntfromname, mountfromname) && 629 !strncmp(sf.f_mntonname, argv[1], 630 MNAMELEN) && 631 !strcmp(sf.f_fstypename, "mfs")) 632 exit(0); 633 634 res = waitpid(pid, &status, WNOHANG); 635 if (res == -1) 636 err(11, "waitpid"); 637 if (res != pid) 638 continue; 639 if (WIFEXITED(status)) { 640 if (WEXITSTATUS(status) == 0) 641 exit(0); 642 errx(1, "%s: mount: %s", argv[1], 643 strerror(WEXITSTATUS(status))); 644 } else 645 errx(11, "abnormal termination"); 646 } 647 /* NOTREACHED */ 648 } 649 650 (void) setsid(); 651 (void) close(0); 652 (void) close(1); 653 (void) close(2); 654 (void) chdir("/"); 655 656 args.fspec = mountfromname; 657 args.export.ex_root = -2; 658 if (mntflags & MNT_RDONLY) 659 args.export.ex_flags = MNT_EXRDONLY; 660 else 661 args.export.ex_flags = 0; 662 args.base = membase; 663 args.size = fssize * sectorsize; 664 doit: 665 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) { 666 if (mntflags & MNT_GETARGS) 667 err(1, "mount `%s' failed", argv[1]); 668 exit(errno); /* parent prints message */ 669 } 670 if (mntflags & MNT_GETARGS) 671 printf("base=%p, size=%ld\n", args.base, args.size); 672 } 673 #endif 674 exit(0); 675 } 676 677 #ifdef COMPAT 678 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 679 #else 680 const char lmsg[] = "%s: can't read disk label"; 681 #endif 682 683 static struct disklabel * 684 getdisklabel(char *s, volatile int fd) 685 /* XXX why is fs volatile?! */ 686 { 687 static struct disklabel lab; 688 689 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 690 #ifdef COMPAT 691 if (disktype) { 692 struct disklabel *lp; 693 694 unlabeled++; 695 lp = getdiskbyname(disktype); 696 if (lp == NULL) 697 errx(1, "%s: unknown disk type", disktype); 698 return (lp); 699 } 700 #endif 701 warn("ioctl (GDINFO)"); 702 errx(1, lmsg, s); 703 } 704 return (&lab); 705 } 706 707 static void 708 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 709 /* XXX why is fd volatile?! */ 710 { 711 #ifdef COMPAT 712 if (unlabeled) 713 return; 714 #endif 715 lp->d_checksum = 0; 716 lp->d_checksum = dkcksum(lp); 717 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 718 if (errno == ESRCH) 719 return; 720 warn("ioctl (WDINFO)"); 721 errx(1, "%s: can't rewrite disk label", s); 722 } 723 #if __vax__ 724 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 725 int i; 726 int cfd; 727 daddr_t alt; 728 off_t loff; 729 char specname[64]; 730 char blk[1024]; 731 char *cp; 732 733 /* 734 * Make name for 'c' partition. 735 */ 736 strcpy(specname, s); 737 cp = specname + strlen(specname) - 1; 738 if (!isdigit(*cp)) 739 *cp = 'c'; 740 cfd = open(specname, O_WRONLY); 741 if (cfd < 0) 742 err(1, "%s: open", specname); 743 if ((loff = getlabeloffset()) < 0) 744 err(1, "getlabeloffset()"); 745 memset(blk, 0, sizeof(blk)); 746 *(struct disklabel *)(blk + loff) = *lp; 747 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 748 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 749 off_t offset; 750 751 offset = alt + i; 752 offset *= lp->d_secsize; 753 if (lseek(cfd, offset, SEEK_SET) == -1) 754 err(1, "lseek to badsector area: "); 755 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 756 warn("alternate label %d write", i/2); 757 } 758 close(cfd); 759 } 760 #endif 761 } 762 763 static gid_t 764 mfs_group(const char *gname) 765 { 766 struct group *gp; 767 768 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 769 errx(1, "unknown gname %s", gname); 770 return gp ? gp->gr_gid : atoi(gname); 771 } 772 773 static uid_t 774 mfs_user(const char *uname) 775 { 776 struct passwd *pp; 777 778 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 779 errx(1, "unknown user %s", uname); 780 return pp ? pp->pw_uid : atoi(uname); 781 } 782 783 static int 784 strsuftoi(const char *desc, const char *arg, int min, int max) 785 { 786 long long result; 787 char *ep; 788 789 errno = 0; 790 result = strtoll(arg, &ep, 10); 791 if (ep[0] != '\0' && ep[1] != '\0') 792 errx(1, "%s `%s' is not a valid number.", desc, arg); 793 switch (tolower((unsigned char)ep[0])) { 794 case '\0': 795 case 'b': 796 break; 797 case 'k': 798 result <<= 10; 799 break; 800 case 'm': 801 result <<= 20; 802 break; 803 case 'g': 804 result <<= 30; 805 break; 806 default: 807 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 808 } 809 if (result < min) 810 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 811 desc, arg, result, min); 812 if (result > max) 813 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 814 desc, arg, result, max); 815 return ((int)result); 816 } 817 818 #define NEWFS 1 819 #define MFS_MOUNT 2 820 #define BOTH NEWFS | MFS_MOUNT 821 822 struct help_strings { 823 int flags; 824 const char *str; 825 } const help_strings[] = { 826 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 827 { NEWFS, "-F \t\tcreate file system image in regular file" }, 828 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 829 { BOTH, "-N \t\tdo not create file system, just print out " 830 "parameters" }, 831 { NEWFS, "-O N\t\tfilesystem format: 0 ==> 4.3BSD, 1 ==> FFS, 2==> UFS2" }, 832 { NEWFS, "-S secsize\tsector size" }, 833 #ifdef COMPAT 834 { NEWFS, "-T disktype\tdisk type" }, 835 #endif 836 { NEWFS, "-Z \t\tpre-zero the image file (with -F)" }, 837 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 838 { BOTH, "-b bsize\tblock size" }, 839 { BOTH, "-c blocks\tblocks per cylinder group" }, 840 { BOTH, "-d maxbsize\t maximum extent size" }, 841 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 842 }, 843 { BOTH, "-f fsize\tfrag size" }, 844 { NEWFS, "-g avgfilesize\taverage file size" }, 845 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 846 { BOTH, "-h avgfpdir\taverage files per directory" }, 847 { BOTH, "-i density\tnumber of bytes per inode" }, 848 { BOTH, "-m minfree\tminimum free space %%" }, 849 { BOTH, "-o optim\toptimization preference (`space' or `time')" 850 }, 851 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 852 { BOTH, "-s fssize\tfile system size (sectors)" }, 853 { MFS_MOUNT, "-u username\tuser name of mount point" }, 854 { NEWFS, "-v volname\tApple UFS volume name" }, 855 { 0, NULL } 856 }; 857 858 static void 859 usage(void) 860 { 861 int match; 862 const struct help_strings *hs; 863 864 if (mfs) { 865 fprintf(stderr, 866 "usage: %s [ fsoptions ] special-device mount-point\n", 867 getprogname()); 868 } else 869 fprintf(stderr, 870 "usage: %s [ fsoptions ] special-device%s\n", 871 getprogname(), 872 #ifdef COMPAT 873 " [device-type]"); 874 #else 875 ""); 876 #endif 877 fprintf(stderr, "where fsoptions are:\n"); 878 879 match = mfs ? MFS_MOUNT : NEWFS; 880 for (hs = help_strings; hs->flags != 0; hs++) 881 if (hs->flags & match) 882 fprintf(stderr, "\t%s\n", hs->str); 883 exit(1); 884 } 885
Indexes created Fri Sep 26 20:09:58 GMT 2025