newfs.c revision 1.75
1 /* $NetBSD: newfs.c,v 1.75 2003/11/01 17:43:03 dsl 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 1.75 2003/11/01 17:43:03 dsl 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/file.h> 92 #include <sys/mount.h> 93 #include <sys/sysctl.h> 94 #include <sys/wait.h> 95 96 #include <ufs/ufs/dir.h> 97 #include <ufs/ufs/dinode.h> 98 #include <ufs/ufs/ufsmount.h> 99 #include <ufs/ffs/fs.h> 100 101 #include <ctype.h> 102 #include <disktab.h> 103 #include <err.h> 104 #include <errno.h> 105 #include <grp.h> 106 #include <paths.h> 107 #include <pwd.h> 108 #include <signal.h> 109 #include <stdio.h> 110 #include <stdlib.h> 111 #include <string.h> 112 #include <syslog.h> 113 #include <unistd.h> 114 #include <util.h> 115 #include <stdint.h> 116 #include <limits.h> 117 118 #include "mntopts.h" 119 #include "dkcksum.h" 120 #include "extern.h" 121 122 struct mntopt mopts[] = { 123 MOPT_STDOPTS, 124 MOPT_ASYNC, 125 MOPT_UPDATE, 126 MOPT_GETARGS, 127 MOPT_NOATIME, 128 { NULL }, 129 }; 130 131 static struct disklabel *getdisklabel(char *, int); 132 static void rewritelabel(char *, int, struct disklabel *); 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); 137 int main(int, char *[]); 138 139 #define COMPAT /* allow non-labeled disks */ 140 141 /* 142 * The following two constants set the default block and fragment sizes. 143 * Both constants must be a power of 2 and meet the following constraints: 144 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 145 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 146 * DESBLKSIZE / DESFRAGSIZE <= 8 147 */ 148 /* 149 * For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, 150 * otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use 151 * L_DFL_*. 152 */ 153 #define SMALL_FSSIZE (20*1024*2) 154 #define S_DFL_FRAGSIZE 512 155 #define MEDIUM_FSSIZE (1000*1024*2) 156 #define M_DFL_FRAGSIZE 1024 157 #define L_DFL_FRAGSIZE 2048 158 #define DFL_FRAG_BLK 8 159 160 /* Apple requires the fragment size to be at least APPLEUFS_DIRBLKSIZ 161 * but the block size cannot be larger than Darwin's PAGE_SIZE. See 162 * the mount check in Darwin's ffs_mountfs for an explanation. 163 */ 164 #define APPLEUFS_DFL_FRAGSIZE APPLEUFS_DIRBLKSIZ /* 1024 */ 165 #define APPLEUFS_DFL_BLKSIZE 4096 /* default Darwin PAGE_SIZE */ 166 167 /* 168 * Default sector size. 169 */ 170 #define DFL_SECSIZE 512 171 172 /* 173 * MAXBLKPG determines the maximum number of data blocks which are 174 * placed in a single cylinder group. The default is one indirect 175 * block worth of data blocks. 176 */ 177 #define MAXBLKPG_UFS1(bsize) ((bsize) / sizeof(int32_t)) 178 #define MAXBLKPG_UFS2(bsize) ((bsize) / sizeof(int64_t)) 179 180 /* 181 * Each file system has a number of inodes statically allocated. 182 * We allocate one inode slot per NFPI fragments, expecting this 183 * to be far more than we will ever need. 184 */ 185 #define NFPI 4 186 187 188 int mfs; /* run as the memory based filesystem */ 189 int Nflag; /* run without writing file system */ 190 int Oflag = 1; /* format as an 4.3BSD file system */ 191 int64_t fssize; /* file system size */ 192 int sectorsize; /* bytes/sector */ 193 int fsize = 0; /* fragment size */ 194 int bsize = 0; /* block size */ 195 int maxbsize = 0; /* maximum clustering */ 196 int minfree = MINFREE; /* free space threshold */ 197 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 198 int density; /* number of bytes per inode */ 199 int num_inodes; /* number of inoder (overrides density) */ 200 int maxcontig = 0; /* max contiguous blocks to allocate */ 201 int maxbpg; /* maximum blocks per file in a cyl group */ 202 int avgfilesize = AVFILESIZ;/* expected average file size */ 203 int avgfpdir = AFPDIR; /* expected number of files per directory */ 204 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 205 u_long memleft; /* virtual memory available */ 206 caddr_t membase; /* start address of memory based filesystem */ 207 int needswap; /* Filesystem not in native byte order */ 208 #ifdef COMPAT 209 char *disktype; 210 int unlabeled; 211 #endif 212 char *appleufs_volname = 0; /* Apple UFS volume name */ 213 int isappleufs = 0; 214 215 char device[MAXPATHLEN]; 216 217 int 218 main(int argc, char *argv[]) 219 { 220 struct partition *pp = NULL; 221 struct disklabel *lp = NULL; 222 struct partition oldpartition; 223 struct statfs *mp; 224 struct stat sb; 225 int ch, fsi, fso, len, n, Fflag, Iflag, Zflag; 226 uint ptn = 0; /* gcc -Wuninitialised */ 227 char *cp, *s1, *s2, *special; 228 const char *opstring; 229 int byte_sized = 0; 230 #ifdef MFS 231 char mountfromname[100]; 232 pid_t pid, res; 233 struct statfs sf; 234 int status; 235 #endif 236 mode_t mfsmode = 01777; /* default mode for a /tmp-type directory */ 237 uid_t mfsuid = 0; /* user root */ 238 gid_t mfsgid = 0; /* group wheel */ 239 240 cp = NULL; 241 fsi = fso = -1; 242 Fflag = Iflag = Zflag = 0; 243 if (strstr(getprogname(), "mfs")) { 244 mfs = 1; 245 Nflag++; 246 } 247 248 opstring = mfs ? 249 "NT:a:b:c:d:e:f:g:h:i:m:n:o:p:s:u:" : 250 "B:FINO:S:T:Za:b:c:d:e:f:g:h:i:l:m:n:o:p:r:s:u:v:"; 251 while ((ch = getopt(argc, argv, opstring)) != -1) 252 switch (ch) { 253 case 'B': 254 if (strcmp(optarg, "be") == 0) { 255 #if BYTE_ORDER == LITTLE_ENDIAN 256 needswap = 1; 257 #endif 258 } else if (strcmp(optarg, "le") == 0) { 259 #if BYTE_ORDER == BIG_ENDIAN 260 needswap = 1; 261 #endif 262 } else 263 usage(); 264 break; 265 case 'F': 266 Fflag = 1; 267 break; 268 case 'I': 269 Iflag = 1; 270 break; 271 case 'N': 272 Nflag = 1; 273 break; 274 case 'O': 275 Oflag = strsuftoi64("format", optarg, 0, 2, NULL); 276 break; 277 case 'S': 278 sectorsize = strsuftoi64("sector size", 279 optarg, 1, INT_MAX, NULL); 280 break; 281 #ifdef COMPAT 282 case 'T': 283 disktype = optarg; 284 break; 285 #endif 286 case 'Z': 287 Zflag = 1; 288 break; 289 case 'a': 290 maxcontig = strsuftoi64("maximum contiguous blocks", 291 optarg, 1, INT_MAX, NULL); 292 break; 293 case 'b': 294 bsize = strsuftoi64("block size", 295 optarg, MINBSIZE, MAXBSIZE, NULL); 296 break; 297 case 'c': /* was cylinders per group... */ 298 break; 299 case 'd': 300 maxbsize = strsuftoi64("maximum extent size", 301 optarg, 0, INT_MAX, NULL); 302 break; 303 case 'e': 304 maxbpg = strsuftoi64( 305 "blocks per file in a cylinder group", 306 optarg, 1, INT_MAX, NULL); 307 break; 308 case 'f': 309 fsize = strsuftoi64("fragment size", 310 optarg, 1, MAXBSIZE, NULL); 311 break; 312 case 'g': 313 if (mfs) 314 mfsgid = mfs_group(optarg); 315 else { 316 avgfilesize = strsuftoi64("average file size", 317 optarg, 1, INT_MAX, NULL); 318 } 319 break; 320 case 'h': 321 avgfpdir = strsuftoi64("expected files per directory", 322 optarg, 1, INT_MAX, NULL); 323 break; 324 case 'i': 325 density = strsuftoi64("bytes per inode", 326 optarg, 1, INT_MAX, NULL); 327 break; 328 case 'm': 329 minfree = strsuftoi64("free space %", 330 optarg, 0, 99, NULL); 331 break; 332 case 'n': 333 num_inodes = strsuftoi64("number of inodes", 334 optarg, 1, INT_MAX, NULL); 335 break; 336 case 'o': 337 if (mfs) 338 getmntopts(optarg, mopts, &mntflags, 0); 339 else { 340 if (strcmp(optarg, "space") == 0) 341 opt = FS_OPTSPACE; 342 else if (strcmp(optarg, "time") == 0) 343 opt = FS_OPTTIME; 344 else 345 errx(1, "%s %s", 346 "unknown optimization preference: ", 347 "use `space' or `time'."); 348 } 349 break; 350 case 'p': 351 if (mfs) { 352 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 353 errx(1, "bad mode `%s'", optarg); 354 } else 355 errx(1, "unknown option 'p'"); 356 break; 357 case 's': 358 fssize = strsuftoi64("file system size", 359 optarg, INT64_MIN, INT64_MAX, &byte_sized); 360 break; 361 case 'u': 362 if (mfs) 363 mfsuid = mfs_user(optarg); 364 else 365 errx(1, "deprecated option 'u'"); 366 break; 367 case 'v': 368 appleufs_volname = optarg; 369 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 370 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 371 if (appleufs_volname[0] == '\0') 372 errx(1,"Apple UFS volume name cannot be zero length"); 373 isappleufs = 1; 374 break; 375 case '?': 376 default: 377 usage(); 378 } 379 argc -= optind; 380 argv += optind; 381 if (mntflags & MNT_GETARGS) 382 goto doit; 383 384 if (argc != 2 && (mfs || argc != 1)) 385 usage(); 386 387 memset(&oldpartition, 0, sizeof oldpartition); 388 memset(&sb, 0, sizeof sb); 389 special = argv[0]; 390 if (Fflag || mfs) { 391 /* 392 * It's a file system image or an MFS, 393 * no label, use fixed default for sectorsize. 394 */ 395 if (sectorsize == 0) 396 sectorsize = DFL_SECSIZE; 397 398 if (!mfs) { /* creating image in a regular file */ 399 int fl; 400 if (Nflag) 401 fl = O_RDONLY; 402 else { 403 if (fssize > 0) 404 fl = O_RDWR | O_CREAT; 405 else 406 fl = O_RDWR; 407 } 408 fsi = open(special, fl, 0777); 409 if (fsi == -1) 410 err(1, "can't open file %s", special); 411 if (fstat(fsi, &sb) == -1) 412 err(1, "can't fstat opened %s", special); 413 if (!Nflag) 414 fso = fsi; 415 } 416 } else { /* !Fflag && !mfs */ 417 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 418 special = device; 419 if (fsi < 0 || fstat(fsi, &sb) == -1) 420 err(1, "%s: open for read", special); 421 422 if (!Nflag) { 423 fso = open(special, O_WRONLY, 0); 424 if (fso < 0) 425 err(1, "%s: open for write", special); 426 427 /* Bail if target special is mounted */ 428 n = getmntinfo(&mp, MNT_NOWAIT); 429 if (n == 0) 430 err(1, "%s: getmntinfo", special); 431 432 len = sizeof(_PATH_DEV) - 1; 433 s1 = special; 434 if (strncmp(_PATH_DEV, s1, len) == 0) 435 s1 += len; 436 437 while (--n >= 0) { 438 s2 = mp->f_mntfromname; 439 if (strncmp(_PATH_DEV, s2, len) == 0) { 440 s2 += len - 1; 441 *s2 = 'r'; 442 } 443 if (strcmp(s1, s2) == 0 || 444 strcmp(s1, &s2[1]) == 0) 445 errx(1, "%s is mounted on %s", 446 special, mp->f_mntonname); 447 ++mp; 448 } 449 } 450 451 #ifdef COMPAT 452 if (disktype == NULL) 453 disktype = argv[1]; 454 #endif 455 lp = getdisklabel(special, fsi); 456 if (sectorsize == 0) { 457 sectorsize = lp->d_secsize; 458 if (sectorsize <= 0) 459 errx(1, "no default sector size"); 460 } 461 462 ptn = strchr(special, '\0')[-1] - 'a'; 463 if (ptn < lp->d_npartitions && ptn == DISKPART(sb.st_rdev)) { 464 /* Assume partition really does match the label */ 465 pp = &lp->d_partitions[ptn]; 466 oldpartition = *pp; 467 if (pp->p_size == 0) 468 errx(1, "`%c' partition is unavailable", 469 'a' + ptn); 470 if (pp->p_fstype == FS_APPLEUFS) 471 isappleufs = 1; 472 if (!Iflag) { 473 if (isappleufs) { 474 if (pp->p_fstype != FS_APPLEUFS) 475 errx(1, "`%c' partition type is not `Apple UFS'", 'a' + ptn); 476 } else { 477 if (pp->p_fstype != FS_BSDFFS) 478 errx(1, "`%c' partition type is not `4.2BSD'", 'a' + ptn); 479 } 480 } 481 } 482 } /* !Fflag && !mfs */ 483 484 if (byte_sized) 485 fssize /= sectorsize; 486 if (fssize <= 0) { 487 if (sb.st_size != 0) 488 fssize += sb.st_size / sectorsize; 489 else 490 fssize += oldpartition.p_size; 491 if (fssize <= 0) 492 errx(1, "Unable to determine file system size"); 493 } 494 495 if (pp != NULL && fssize > pp->p_size) 496 errx(1, "maximum file system size on `%s' is %d sectors", 497 special, pp->p_size); 498 499 /* XXXLUKEM: only ftruncate() regular files ? (dsl: or at all?) */ 500 if (Fflag && fso != -1 501 && ftruncate(fso, (off_t)fssize * sectorsize) == -1) 502 err(1, "can't ftruncate %s to %" PRId64, special, fssize); 503 504 if (Zflag && fso != -1) { /* pre-zero (and de-sparce) the file */ 505 char *buf; 506 int bufsize, i; 507 off_t bufrem; 508 struct statfs sfs; 509 510 if (fstatfs(fso, &sfs) == -1) { 511 warn("can't fstatfs `%s'", special); 512 bufsize = 8192; 513 } else 514 bufsize = sfs.f_iosize; 515 516 if ((buf = calloc(1, bufsize)) == NULL) 517 err(1, "can't malloc buffer of %d", 518 bufsize); 519 bufrem = fssize * sectorsize; 520 printf( 521 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 522 special, (long long)bufrem, bufsize); 523 while (bufrem > 0) { 524 i = write(fso, buf, MIN(bufsize, bufrem)); 525 if (i == -1) 526 err(1, "writing image"); 527 bufrem -= i; 528 } 529 free(buf); 530 } 531 532 /* Sort out fragment and block sizes */ 533 if (fsize == 0) { 534 fsize = bsize / DFL_FRAG_BLK; 535 if (fsize == 0) 536 fsize = oldpartition.p_fsize; 537 if (fsize <= 0) { 538 if (isappleufs) { 539 fsize = APPLEUFS_DFL_FRAGSIZE; 540 } else { 541 if (fssize < SMALL_FSSIZE) 542 fsize = S_DFL_FRAGSIZE; 543 else if (fssize < MEDIUM_FSSIZE) 544 fsize = M_DFL_FRAGSIZE; 545 else 546 fsize = L_DFL_FRAGSIZE; 547 if (fsize < sectorsize) 548 fsize = sectorsize; 549 } 550 } 551 } 552 if (bsize == 0) { 553 bsize = oldpartition.p_frag * oldpartition.p_fsize; 554 if (bsize <= 0) { 555 if (isappleufs) 556 bsize = APPLEUFS_DFL_BLKSIZE; 557 else 558 bsize = DFL_FRAG_BLK * fsize; 559 } 560 } 561 562 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 563 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 564 fsize, APPLEUFS_DFL_FRAGSIZE); 565 } 566 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 567 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 568 bsize, APPLEUFS_DFL_BLKSIZE); 569 } 570 571 /* 572 * Maxcontig sets the default for the maximum number of blocks 573 * that may be allocated sequentially. With filesystem clustering 574 * it is possible to allocate contiguous blocks up to the maximum 575 * transfer size permitted by the controller or buffering. 576 */ 577 if (maxcontig == 0) 578 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 579 if (density == 0) 580 density = NFPI * fsize; 581 if (minfree < MINFREE && opt != FS_OPTSPACE) { 582 warnx("%s %s %d%%", "Warning: changing optimization to space", 583 "because minfree is less than", MINFREE); 584 opt = FS_OPTSPACE; 585 } 586 if (maxbpg == 0) { 587 if (Oflag <= 1) 588 maxbpg = MAXBLKPG_UFS1(bsize); 589 else 590 maxbpg = MAXBLKPG_UFS2(bsize); 591 } 592 mkfs(pp, special, fsi, fso, mfsmode, mfsuid, mfsgid); 593 if (!Nflag && pp != NULL 594 && memcmp(pp, &oldpartition, sizeof(oldpartition))) 595 rewritelabel(special, fso, lp); 596 if (fsi != -1 && fsi != fso) 597 close(fsi); 598 if (fso != -1) 599 close(fso); 600 #ifdef MFS 601 if (mfs) { 602 struct mfs_args args; 603 604 switch (pid = fork()) { 605 case -1: 606 perror("mfs"); 607 exit(10); 608 case 0: 609 (void)snprintf(mountfromname, sizeof(mountfromname), 610 "mfs:%d", getpid()); 611 break; 612 default: 613 (void)snprintf(mountfromname, sizeof(mountfromname), 614 "mfs:%d", pid); 615 for (;;) { 616 /* 617 * spin until the mount succeeds 618 * or the child exits 619 */ 620 usleep(1); 621 622 /* 623 * XXX Here is a race condition: another process 624 * can mount a filesystem which hides our 625 * ramdisk before we see the success. 626 */ 627 if (statfs(argv[1], &sf) < 0) 628 err(88, "statfs %s", argv[1]); 629 if (!strcmp(sf.f_mntfromname, mountfromname) && 630 !strncmp(sf.f_mntonname, argv[1], 631 MNAMELEN) && 632 !strcmp(sf.f_fstypename, "mfs")) 633 exit(0); 634 635 res = waitpid(pid, &status, WNOHANG); 636 if (res == -1) 637 err(11, "waitpid"); 638 if (res != pid) 639 continue; 640 if (WIFEXITED(status)) { 641 if (WEXITSTATUS(status) == 0) 642 exit(0); 643 errx(1, "%s: mount: %s", argv[1], 644 strerror(WEXITSTATUS(status))); 645 } else 646 errx(11, "abnormal termination"); 647 } 648 /* NOTREACHED */ 649 } 650 651 (void) setsid(); 652 (void) close(0); 653 (void) close(1); 654 (void) close(2); 655 (void) chdir("/"); 656 657 args.fspec = mountfromname; 658 args.export.ex_root = -2; 659 if (mntflags & MNT_RDONLY) 660 args.export.ex_flags = MNT_EXRDONLY; 661 else 662 args.export.ex_flags = 0; 663 args.base = membase; 664 args.size = fssize * sectorsize; 665 doit: 666 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) { 667 if (mntflags & MNT_GETARGS) 668 err(1, "mount `%s' failed", argv[1]); 669 exit(errno); /* parent prints message */ 670 } 671 if (mntflags & MNT_GETARGS) 672 printf("base=%p, size=%ld\n", args.base, args.size); 673 } 674 #endif 675 exit(0); 676 } 677 678 #ifdef COMPAT 679 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 680 #else 681 const char lmsg[] = "%s: can't read disk label"; 682 #endif 683 684 static struct disklabel * 685 getdisklabel(char *s, int fd) 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, int fd, struct disklabel *lp) 709 { 710 #ifdef COMPAT 711 if (unlabeled) 712 return; 713 #endif 714 lp->d_checksum = 0; 715 lp->d_checksum = dkcksum(lp); 716 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 717 if (errno == ESRCH) 718 return; 719 warn("ioctl (WDINFO)"); 720 errx(1, "%s: can't rewrite disk label", s); 721 } 722 #if __vax__ 723 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 724 int i; 725 int cfd; 726 daddr_t alt; 727 off_t loff; 728 char specname[64]; 729 char blk[1024]; 730 char *cp; 731 732 /* 733 * Make name for 'c' partition. 734 */ 735 strlcpy(specname, s, sizeof(specname)); 736 cp = specname + strlen(specname) - 1; 737 if (!isdigit(*cp)) 738 *cp = 'c'; 739 cfd = open(specname, O_WRONLY); 740 if (cfd < 0) 741 err(1, "%s: open", specname); 742 if ((loff = getlabeloffset()) < 0) 743 err(1, "getlabeloffset()"); 744 memset(blk, 0, sizeof(blk)); 745 *(struct disklabel *)(blk + loff) = *lp; 746 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 747 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 748 off_t offset; 749 750 offset = alt + i; 751 offset *= lp->d_secsize; 752 if (lseek(cfd, offset, SEEK_SET) == -1) 753 err(1, "lseek to badsector area: "); 754 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 755 warn("alternate label %d write", i/2); 756 } 757 close(cfd); 758 } 759 #endif 760 } 761 762 static gid_t 763 mfs_group(const char *gname) 764 { 765 struct group *gp; 766 767 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 768 errx(1, "unknown gname %s", gname); 769 return gp ? gp->gr_gid : atoi(gname); 770 } 771 772 static uid_t 773 mfs_user(const char *uname) 774 { 775 struct passwd *pp; 776 777 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 778 errx(1, "unknown user %s", uname); 779 return pp ? pp->pw_uid : atoi(uname); 780 } 781 782 static int64_t 783 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 784 { 785 int64_t result, r1; 786 int shift = 0; 787 char *ep; 788 789 errno = 0; 790 r1 = 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 (ep[0]) { 794 case '\0': 795 case 's': case 'S': 796 if (num_suffix != NULL) 797 *num_suffix = 0; 798 break; 799 case 'g': case 'G': 800 shift += 10; 801 /* FALLTHROUGH */ 802 case 'm': case 'M': 803 shift += 10; 804 /* FALLTHROUGH */ 805 case 'k': case 'K': 806 shift += 10; 807 /* FALLTHROUGH */ 808 case 'b': case 'B': 809 if (num_suffix != NULL) 810 *num_suffix = 1; 811 break; 812 default: 813 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 814 } 815 result = r1 << shift; 816 if (errno == ERANGE || result >> shift != r1) 817 errx(1, "%s `%s' is too large to convert.", desc, arg); 818 if (result < min) 819 errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").", 820 desc, arg, result, min); 821 if (result > max) 822 errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").", 823 desc, arg, result, max); 824 return result; 825 } 826 827 #define NEWFS 1 828 #define MFS_MOUNT 2 829 #define BOTH NEWFS | MFS_MOUNT 830 831 struct help_strings { 832 int flags; 833 const char *str; 834 } const help_strings[] = { 835 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 836 { NEWFS, "-F \t\tcreate file system image in regular file" }, 837 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 838 { BOTH, "-N \t\tdo not create file system, just print out " 839 "parameters" }, 840 { NEWFS, "-O N\t\tfilesystem format: 0 ==> 4.3BSD, 1 ==> FFS, 2 ==> UFS2" }, 841 { NEWFS, "-S secsize\tsector size" }, 842 #ifdef COMPAT 843 { NEWFS, "-T disktype\tdisk type" }, 844 #endif 845 { NEWFS, "-Z \t\tpre-zero the image file" }, 846 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 847 { BOTH, "-b bsize\tblock size" }, 848 { BOTH, "-c blocks\tblocks per cylinder group" }, 849 { BOTH, "-d maxbsize\tmaximum extent size" }, 850 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 851 }, 852 { BOTH, "-f fsize\tfrag size" }, 853 { NEWFS, "-g avgfilesize\taverage file size" }, 854 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 855 { BOTH, "-h avgfpdir\taverage files per directory" }, 856 { BOTH, "-i density\tnumber of bytes per inode" }, 857 { BOTH, "-m minfree\tminimum free space %%" }, 858 { BOTH, "-n inodes\tnumder of inodes (overrides -i density)" }, 859 { BOTH, "-o optim\toptimization preference (`space' or `time')" 860 }, 861 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 862 { BOTH, "-s fssize\tfile system size (sectors)" }, 863 { MFS_MOUNT, "-u username\tuser name of mount point" }, 864 { NEWFS, "-v volname\tApple UFS volume name" }, 865 { 0, NULL } 866 }; 867 868 static void 869 usage(void) 870 { 871 int match; 872 const struct help_strings *hs; 873 874 if (mfs) { 875 fprintf(stderr, 876 "usage: %s [ fsoptions ] special-device mount-point\n", 877 getprogname()); 878 } else 879 fprintf(stderr, 880 "usage: %s [ fsoptions ] special-device%s\n", 881 getprogname(), 882 #ifdef COMPAT 883 " [disk-type]"); 884 #else 885 ""); 886 #endif 887 fprintf(stderr, "where fsoptions are:\n"); 888 889 match = mfs ? MFS_MOUNT : NEWFS; 890 for (hs = help_strings; hs->flags != 0; hs++) 891 if (hs->flags & match) 892 fprintf(stderr, "\t%s\n", hs->str); 893 exit(1); 894 } 895
Indexes created Wed Sep 24 15:09:51 GMT 2025