newfs.c revision 1.65
1 /* $NetBSD: newfs.c,v 1.65 2003/04/02 20:48:13 dbj 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 1.65 2003/04/02 20:48:13 dbj 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 /* Apple requires the fragment size to be at least APPLEUFS_DIRBLKSIZ 135 * but the block size cannot be larger than Darwin's PAGE_SIZE. See 136 * the mount check in Darwin's ffs_mountfs for an explanation. 137 */ 138 #define APPLEUFS_DFL_FRAGSIZE APPLEUFS_DIRBLKSIZ /* 1024 */ 139 #define APPLEUFS_DFL_BLKSIZE 4096 /* default Darwin PAGE_SIZE */ 140 141 /* 142 * Default sector size. 143 */ 144 #define DFL_SECSIZE 512 145 146 /* 147 * Cylinder groups may have up to many cylinders. The actual 148 * number used depends upon how much information can be stored 149 * on a single cylinder. The default is to use 16 cylinders 150 * per group. 151 */ 152 #define MAXBLKSPERCG 0x7fffffff /* desired fs_fpg ("infinity") */ 153 154 /* 155 * MAXBLKPG determines the maximum number of data blocks which are 156 * placed in a single cylinder group. The default is one indirect 157 * block worth of data blocks. 158 */ 159 #define MAXBLKPG_UFS1(bsize) ((bsize) / sizeof(int32_t)) 160 #define MAXBLKPG_UFS2(bsize) ((bsize) / sizeof(int64_t)) 161 162 /* 163 * Each file system has a number of inodes statically allocated. 164 * We allocate one inode slot per NFPI fragments, expecting this 165 * to be far more than we will ever need. 166 */ 167 #define NFPI 4 168 169 170 int mfs; /* run as the memory based filesystem */ 171 int Nflag; /* run without writing file system */ 172 int Oflag = 1; /* format as an 4.3BSD file system */ 173 int64_t fssize; /* file system size */ 174 int sectorsize; /* bytes/sector */ 175 int fsize = 0; /* fragment size */ 176 int bsize = 0; /* block size */ 177 int maxbsize = 0; /* maximum clustering */ 178 int maxblkspercg = MAXBLKSPERCG; /* maximum blocks per cylinder group */ 179 int minfree = MINFREE; /* free space threshold */ 180 int opt = DEFAULTOPT; /* optimization preference (space or time) */ 181 int density; /* number of bytes per inode */ 182 int maxcontig = 0; /* max contiguous blocks to allocate */ 183 int maxbpg; /* maximum blocks per file in a cyl group */ 184 int avgfilesize = AVFILESIZ;/* expected average file size */ 185 int avgfpdir = AFPDIR; /* expected number of files per directory */ 186 int bbsize = BBSIZE; /* boot block size */ 187 int sbsize = SBLOCKSIZE; /* superblock size */ 188 int mntflags = MNT_ASYNC; /* flags to be passed to mount */ 189 u_long memleft; /* virtual memory available */ 190 caddr_t membase; /* start address of memory based filesystem */ 191 int needswap; /* Filesystem not in native byte order */ 192 #ifdef COMPAT 193 char *disktype; 194 int unlabeled; 195 #endif 196 char *appleufs_volname = 0; /* Apple UFS volume name */ 197 int isappleufs = 0; 198 199 char device[MAXPATHLEN]; 200 201 int 202 main(int argc, char *argv[]) 203 { 204 struct partition *pp; 205 struct disklabel *lp; 206 struct disklabel mfsfakelabel; 207 struct partition oldpartition; 208 struct statfs *mp; 209 int ch, fsi, fso, len, maxpartitions, n, Fflag, Iflag, Zflag; 210 char *cp, *endp, *s1, *s2, *special; 211 const char *opstring; 212 long long llsize; 213 int dfl_fragsize, dfl_blksize; 214 #ifdef MFS 215 char mountfromname[100]; 216 pid_t pid, res; 217 struct statfs sf; 218 int status; 219 #endif 220 mode_t mfsmode; 221 uid_t mfsuid; 222 gid_t mfsgid; 223 224 cp = NULL; 225 fsi = fso = -1; 226 Fflag = Iflag = Zflag = 0; 227 if (strstr(getprogname(), "mfs")) { 228 mfs = 1; 229 mfsmode = 01777; /* default mode for a /tmp-type directory */ 230 mfsuid = 0; /* user root */ 231 mfsgid = 0; /* group wheel */ 232 Nflag++; 233 } 234 235 maxpartitions = getmaxpartitions(); 236 if (maxpartitions > 26) 237 errx(1, "insane maxpartitions value %d", maxpartitions); 238 239 opstring = mfs ? 240 "NT:a:b:c:d:e:f:g:h:i:m:o:p:s:u:" : 241 "B:FINO:S:T:Za:b:c:d:e:f:g:h:i:l:m:o:p:r:s:u:v:"; 242 while ((ch = getopt(argc, argv, opstring)) != -1) 243 switch (ch) { 244 case 'B': 245 if (strcmp(optarg, "be") == 0) { 246 #if BYTE_ORDER == LITTLE_ENDIAN 247 needswap = 1; 248 #endif 249 } else if (strcmp(optarg, "le") == 0) { 250 #if BYTE_ORDER == BIG_ENDIAN 251 needswap = 1; 252 #endif 253 } else 254 usage(); 255 break; 256 case 'F': 257 Fflag = 1; 258 break; 259 case 'I': 260 Iflag = 1; 261 break; 262 case 'N': 263 Nflag = 1; 264 break; 265 case 'O': 266 Oflag = strsuftoi("format", optarg, 0, 2); 267 break; 268 case 'S': 269 sectorsize = strsuftoi("sector size", 270 optarg, 1, INT_MAX); 271 break; 272 #ifdef COMPAT 273 case 'T': 274 disktype = optarg; 275 break; 276 #endif 277 case 'Z': 278 Zflag = 1; 279 break; 280 case 'a': 281 maxcontig = strsuftoi("maximum contiguous blocks", 282 optarg, 1, INT_MAX); 283 break; 284 case 'b': 285 bsize = strsuftoi("block size", 286 optarg, MINBSIZE, MAXBSIZE); 287 break; 288 case 'c': 289 maxblkspercg = strsuftoi("max. blocks per group", 290 optarg, 1, INT_MAX); 291 break; 292 case 'd': 293 maxbsize = strsuftoi("maximum extent size", 294 optarg, 0, INT_MAX); 295 break; 296 case 'e': 297 maxbpg = strsuftoi( 298 "blocks per file in a cylinder group", 299 optarg, 1, INT_MAX); 300 break; 301 case 'f': 302 fsize = strsuftoi("fragment size", 303 optarg, 1, MAXBSIZE); 304 break; 305 case 'g': 306 if (mfs) 307 mfsgid = mfs_group(optarg); 308 else { 309 avgfilesize = strsuftoi("average file size", 310 optarg, 1, INT_MAX); 311 } 312 break; 313 case 'h': 314 avgfpdir = strsuftoi("expected files per directory", 315 optarg, 1, INT_MAX); 316 break; 317 case 'i': 318 density = strsuftoi("bytes per inode", 319 optarg, 1, INT_MAX); 320 break; 321 case 'm': 322 minfree = strsuftoi("free space %", 323 optarg, 0, 99); 324 break; 325 case 'o': 326 if (mfs) 327 getmntopts(optarg, mopts, &mntflags, 0); 328 else { 329 if (strcmp(optarg, "space") == 0) 330 opt = FS_OPTSPACE; 331 else if (strcmp(optarg, "time") == 0) 332 opt = FS_OPTTIME; 333 else 334 errx(1, "%s %s", 335 "unknown optimization preference: ", 336 "use `space' or `time'."); 337 } 338 break; 339 case 'p': 340 if (mfs) { 341 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 342 errx(1, "bad mode `%s'", optarg); 343 } else 344 errx(1, "unknown option 'p'"); 345 break; 346 case 's': 347 llsize = strtoll(optarg, &endp, 10); 348 if (endp[0] != '\0' && endp[1] != '\0') 349 llsize = -1; 350 else { 351 int ssiz; 352 353 ssiz = (sectorsize ? sectorsize : DFL_SECSIZE); 354 switch (tolower((unsigned char)endp[0])) { 355 case 'b': 356 llsize /= ssiz; 357 break; 358 case 'k': 359 llsize *= 1024 / ssiz; 360 break; 361 case 'm': 362 llsize *= 1024 * 1024 / ssiz; 363 break; 364 case 'g': 365 llsize *= 1024 * 1024 * 1024 / ssiz; 366 break; 367 case '\0': 368 case 's': 369 break; 370 default: 371 llsize = -1; 372 } 373 } 374 if (llsize > LLONG_MAX) 375 errx(1, "file system size `%s' is too large.", 376 optarg); 377 if (llsize <= 0) 378 errx(1, 379 "`%s' is not a valid number for file system size.", 380 optarg); 381 fssize = llsize; 382 break; 383 case 'u': 384 if (mfs) 385 mfsuid = mfs_user(optarg); 386 else 387 errx(1, "deprecated option 'u'"); 388 break; 389 case 'v': 390 appleufs_volname = optarg; 391 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 392 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 393 if (appleufs_volname[0] == '\0') 394 errx(1,"Apple UFS volume name cannot be zero length"); 395 isappleufs = 1; 396 break; 397 case '?': 398 default: 399 usage(); 400 } 401 argc -= optind; 402 argv += optind; 403 if (mntflags & MNT_GETARGS) 404 goto doit; 405 406 if (argc != 2 && (mfs || argc != 1)) 407 usage(); 408 409 special = argv[0]; 410 if (Fflag || mfs) { 411 /* 412 * it's a file system image or an MFS, so fake up a label. 413 * XXX 414 */ 415 if (!sectorsize) 416 sectorsize = DFL_SECSIZE; 417 418 if (Fflag && !Nflag) { /* creating image in a regular file */ 419 if (fssize == 0) 420 errx(1, "need to specify size when using -F"); 421 fso = open(special, O_RDWR | O_CREAT | O_TRUNC, 0777); 422 if (fso == -1) 423 err(1, "can't open file %s", special); 424 if ((fsi = dup(fso)) == -1) 425 err(1, "can't dup(2) image fd"); 426 /* XXXLUKEM: only ftruncate() regular files ? */ 427 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 428 err(1, "can't resize %s to %lld", 429 special, (long long)fssize); 430 431 if (Zflag) { /* pre-zero the file */ 432 char *buf; 433 int bufsize, i; 434 off_t bufrem; 435 struct statfs sfs; 436 437 if (fstatfs(fso, &sfs) == -1) { 438 warn("can't fstatfs `%s'", special); 439 bufsize = 8192; 440 } else 441 bufsize = sfs.f_iosize; 442 443 if ((buf = calloc(1, bufsize)) == NULL) 444 err(1, "can't malloc buffer of %d", 445 bufsize); 446 bufrem = fssize * sectorsize; 447 printf( 448 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 449 special, (long long)bufrem, bufsize); 450 while (bufrem > 0) { 451 i = write(fso, buf, 452 MIN(bufsize, bufrem)); 453 if (i == -1) 454 err(1, "writing image"); 455 bufrem -= i; 456 } 457 } 458 459 } 460 461 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 462 mfsfakelabel.d_secsize = sectorsize; 463 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 464 mfsfakelabel.d_ntracks = 16; 465 mfsfakelabel.d_ncylinders = 16; 466 mfsfakelabel.d_secpercyl = 467 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 468 mfsfakelabel.d_secperunit = 469 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 470 mfsfakelabel.d_rpm = 10000; 471 mfsfakelabel.d_interleave = 1; 472 mfsfakelabel.d_npartitions = 1; 473 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 474 mfsfakelabel.d_partitions[0].p_fsize = 1024; 475 mfsfakelabel.d_partitions[0].p_frag = 8; 476 mfsfakelabel.d_partitions[0].p_cpg = 16; 477 478 lp = &mfsfakelabel; 479 pp = &mfsfakelabel.d_partitions[0]; 480 } else { /* !Fflag && !mfs */ 481 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 482 special = device; 483 if (fsi < 0) 484 err(1, "%s: open for read", special); 485 486 if (Nflag) { 487 fso = -1; 488 } else { 489 fso = open(special, O_WRONLY); 490 if (fso < 0) 491 err(1, "%s: open for write", special); 492 493 /* Bail if target special is mounted */ 494 n = getmntinfo(&mp, MNT_NOWAIT); 495 if (n == 0) 496 err(1, "%s: getmntinfo", special); 497 498 len = sizeof(_PATH_DEV) - 1; 499 s1 = special; 500 if (strncmp(_PATH_DEV, s1, len) == 0) 501 s1 += len; 502 503 while (--n >= 0) { 504 s2 = mp->f_mntfromname; 505 if (strncmp(_PATH_DEV, s2, len) == 0) { 506 s2 += len - 1; 507 *s2 = 'r'; 508 } 509 if (strcmp(s1, s2) == 0 || 510 strcmp(s1, &s2[1]) == 0) 511 errx(1, "%s is mounted on %s", 512 special, mp->f_mntonname); 513 ++mp; 514 } 515 } 516 cp = strchr(argv[0], '\0') - 1; 517 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 518 && !isdigit(*cp))) 519 errx(1, "can't figure out file system partition"); 520 #ifdef COMPAT 521 if (disktype == NULL) 522 disktype = argv[1]; 523 #endif 524 lp = getdisklabel(special, fsi); 525 if (isdigit(*cp)) 526 pp = &lp->d_partitions[0]; 527 else 528 pp = &lp->d_partitions[*cp - 'a']; 529 if (pp->p_size == 0) 530 errx(1, "`%c' partition is unavailable", *cp); 531 if (pp->p_fstype == FS_APPLEUFS) 532 isappleufs = 1; 533 if (isappleufs) { 534 if (!Iflag && (pp->p_fstype != FS_APPLEUFS)) 535 errx(1, "`%c' partition type is not `Apple UFS'", *cp); 536 } else { 537 if (!Iflag && (pp->p_fstype != FS_BSDFFS)) 538 errx(1, "`%c' partition type is not `4.2BSD'", *cp); 539 } 540 } /* !Fflag && !mfs */ 541 542 if (fssize == 0) 543 fssize = pp->p_size; 544 if (fssize > pp->p_size && !mfs && !Fflag) 545 errx(1, "maximum file system size on the `%c' partition is %d", 546 *cp, pp->p_size); 547 if (sectorsize == 0) { 548 sectorsize = lp->d_secsize; 549 if (sectorsize <= 0) 550 errx(1, "no default sector size"); 551 } 552 553 if (isappleufs) { 554 dfl_fragsize = APPLEUFS_DFL_FRAGSIZE; 555 dfl_blksize = APPLEUFS_DFL_BLKSIZE; 556 } else if (fssize < SMALL_FSSIZE) { 557 dfl_fragsize = S_DFL_FRAGSIZE; 558 dfl_blksize = S_DFL_BLKSIZE; 559 } else if (fssize < MEDIUM_FSSIZE) { 560 dfl_fragsize = M_DFL_FRAGSIZE; 561 dfl_blksize = M_DFL_BLKSIZE; 562 } else { 563 dfl_fragsize = L_DFL_FRAGSIZE; 564 dfl_blksize = L_DFL_BLKSIZE; 565 } 566 567 if (fsize == 0) { 568 fsize = pp->p_fsize; 569 if (fsize <= 0) 570 fsize = MAX(dfl_fragsize, lp->d_secsize); 571 } 572 if (bsize == 0) { 573 bsize = pp->p_frag * pp->p_fsize; 574 if (bsize <= 0) 575 bsize = MIN(dfl_blksize, 8 * fsize); 576 } 577 578 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 579 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 580 fsize,APPLEUFS_DFL_FRAGSIZE); 581 } 582 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 583 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 584 bsize,APPLEUFS_DFL_BLKSIZE); 585 } 586 587 /* 588 * Maxcontig sets the default for the maximum number of blocks 589 * that may be allocated sequentially. With filesystem clustering 590 * it is possible to allocate contiguous blocks up to the maximum 591 * transfer size permitted by the controller or buffering. 592 */ 593 if (maxcontig == 0) 594 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 595 if (density == 0) 596 density = NFPI * fsize; 597 if (minfree < MINFREE && opt != FS_OPTSPACE) { 598 warnx("%s %s %d%%", "Warning: changing optimization to space", 599 "because minfree is less than", MINFREE); 600 opt = FS_OPTSPACE; 601 } 602 if (maxbpg == 0) { 603 if (Oflag <= 1) 604 maxbpg = MAXBLKPG_UFS1(bsize); 605 else 606 maxbpg = MAXBLKPG_UFS2(bsize); 607 } 608 #ifdef notdef /* label may be 0 if faked up by kernel */ 609 bbsize = lp->d_bbsize; 610 sbsize = lp->d_sbsize; 611 #endif 612 oldpartition = *pp; 613 mkfs(pp, special, fsi, fso, mfsmode, mfsuid, mfsgid); 614 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 615 rewritelabel(special, fso, lp); 616 if (!Nflag) 617 close(fso); 618 close(fsi); 619 #ifdef MFS 620 if (mfs) { 621 struct mfs_args args; 622 623 switch (pid = fork()) { 624 case -1: 625 perror("mfs"); 626 exit(10); 627 case 0: 628 (void)snprintf(mountfromname, sizeof(mountfromname), 629 "mfs:%d", getpid()); 630 break; 631 default: 632 (void)snprintf(mountfromname, sizeof(mountfromname), 633 "mfs:%d", pid); 634 for (;;) { 635 /* 636 * spin until the mount succeeds 637 * or the child exits 638 */ 639 usleep(1); 640 641 /* 642 * XXX Here is a race condition: another process 643 * can mount a filesystem which hides our 644 * ramdisk before we see the success. 645 */ 646 if (statfs(argv[1], &sf) < 0) 647 err(88, "statfs %s", argv[1]); 648 if (!strcmp(sf.f_mntfromname, mountfromname) && 649 !strncmp(sf.f_mntonname, argv[1], 650 MNAMELEN) && 651 !strcmp(sf.f_fstypename, "mfs")) 652 exit(0); 653 654 res = waitpid(pid, &status, WNOHANG); 655 if (res == -1) 656 err(11, "waitpid"); 657 if (res != pid) 658 continue; 659 if (WIFEXITED(status)) { 660 if (WEXITSTATUS(status) == 0) 661 exit(0); 662 errx(1, "%s: mount: %s", argv[1], 663 strerror(WEXITSTATUS(status))); 664 } else 665 errx(11, "abnormal termination"); 666 } 667 /* NOTREACHED */ 668 } 669 670 (void) setsid(); 671 (void) close(0); 672 (void) close(1); 673 (void) close(2); 674 (void) chdir("/"); 675 676 args.fspec = mountfromname; 677 args.export.ex_root = -2; 678 if (mntflags & MNT_RDONLY) 679 args.export.ex_flags = MNT_EXRDONLY; 680 else 681 args.export.ex_flags = 0; 682 args.base = membase; 683 args.size = fssize * sectorsize; 684 doit: 685 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) { 686 if (mntflags & MNT_GETARGS) 687 err(1, "mount `%s' failed", argv[1]); 688 exit(errno); /* parent prints message */ 689 } 690 if (mntflags & MNT_GETARGS) 691 printf("base=%p, size=%ld\n", args.base, args.size); 692 } 693 #endif 694 exit(0); 695 } 696 697 #ifdef COMPAT 698 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 699 #else 700 const char lmsg[] = "%s: can't read disk label"; 701 #endif 702 703 static struct disklabel * 704 getdisklabel(char *s, volatile int fd) 705 /* XXX why is fs volatile?! */ 706 { 707 static struct disklabel lab; 708 709 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 710 #ifdef COMPAT 711 if (disktype) { 712 struct disklabel *lp; 713 714 unlabeled++; 715 lp = getdiskbyname(disktype); 716 if (lp == NULL) 717 errx(1, "%s: unknown disk type", disktype); 718 return (lp); 719 } 720 #endif 721 warn("ioctl (GDINFO)"); 722 errx(1, lmsg, s); 723 } 724 return (&lab); 725 } 726 727 static void 728 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 729 /* XXX why is fd volatile?! */ 730 { 731 #ifdef COMPAT 732 if (unlabeled) 733 return; 734 #endif 735 lp->d_checksum = 0; 736 lp->d_checksum = dkcksum(lp); 737 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 738 if (errno == ESRCH) 739 return; 740 warn("ioctl (WDINFO)"); 741 errx(1, "%s: can't rewrite disk label", s); 742 } 743 #if __vax__ 744 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 745 int i; 746 int cfd; 747 daddr_t alt; 748 off_t loff; 749 char specname[64]; 750 char blk[1024]; 751 char *cp; 752 753 /* 754 * Make name for 'c' partition. 755 */ 756 strcpy(specname, s); 757 cp = specname + strlen(specname) - 1; 758 if (!isdigit(*cp)) 759 *cp = 'c'; 760 cfd = open(specname, O_WRONLY); 761 if (cfd < 0) 762 err(1, "%s: open", specname); 763 if ((loff = getlabeloffset()) < 0) 764 err(1, "getlabeloffset()"); 765 memset(blk, 0, sizeof(blk)); 766 *(struct disklabel *)(blk + loff) = *lp; 767 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 768 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 769 off_t offset; 770 771 offset = alt + i; 772 offset *= lp->d_secsize; 773 if (lseek(cfd, offset, SEEK_SET) == -1) 774 err(1, "lseek to badsector area: "); 775 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 776 warn("alternate label %d write", i/2); 777 } 778 close(cfd); 779 } 780 #endif 781 } 782 783 static gid_t 784 mfs_group(const char *gname) 785 { 786 struct group *gp; 787 788 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 789 errx(1, "unknown gname %s", gname); 790 return gp ? gp->gr_gid : atoi(gname); 791 } 792 793 static uid_t 794 mfs_user(const char *uname) 795 { 796 struct passwd *pp; 797 798 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 799 errx(1, "unknown user %s", uname); 800 return pp ? pp->pw_uid : atoi(uname); 801 } 802 803 static int 804 strsuftoi(const char *desc, const char *arg, int min, int max) 805 { 806 long long result; 807 char *ep; 808 809 errno = 0; 810 result = strtoll(arg, &ep, 10); 811 if (ep[0] != '\0' && ep[1] != '\0') 812 errx(1, "%s `%s' is not a valid number.", desc, arg); 813 switch (tolower((unsigned char)ep[0])) { 814 case '\0': 815 case 'b': 816 break; 817 case 'k': 818 result <<= 10; 819 break; 820 case 'm': 821 result <<= 20; 822 break; 823 case 'g': 824 result <<= 30; 825 break; 826 default: 827 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 828 } 829 if (result < min) 830 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 831 desc, arg, result, min); 832 if (result > max) 833 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 834 desc, arg, result, max); 835 return ((int)result); 836 } 837 838 #define NEWFS 1 839 #define MFS_MOUNT 2 840 #define BOTH NEWFS | MFS_MOUNT 841 842 struct help_strings { 843 int flags; 844 const char *str; 845 } const help_strings[] = { 846 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 847 { NEWFS, "-F \t\tcreate file system image in regular file" }, 848 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 849 { BOTH, "-N \t\tdo not create file system, just print out " 850 "parameters" }, 851 { NEWFS, "-O N\t\tfilesystem format: 0 ==> 4.3BSD, 1 ==> FFS, 2==> UFS2" }, 852 { NEWFS, "-S secsize\tsector size" }, 853 #ifdef COMPAT 854 { NEWFS, "-T disktype\tdisk type" }, 855 #endif 856 { NEWFS, "-Z \t\tpre-zero the image file (with -F)" }, 857 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 858 { BOTH, "-b bsize\tblock size" }, 859 { BOTH, "-c blocks\tblocks per cylinder group" }, 860 { BOTH, "-d maxbsize\t maximum extent size" }, 861 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 862 }, 863 { BOTH, "-f fsize\tfrag size" }, 864 { NEWFS, "-g avgfilesize\taverage file size" }, 865 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 866 { BOTH, "-h avgfpdir\taverage files per directory" }, 867 { BOTH, "-i density\tnumber of bytes per inode" }, 868 { BOTH, "-m minfree\tminimum free space %%" }, 869 { BOTH, "-o optim\toptimization preference (`space' or `time')" 870 }, 871 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 872 { BOTH, "-s fssize\tfile system size (sectors)" }, 873 { MFS_MOUNT, "-u username\tuser name of mount point" }, 874 { NEWFS, "-v volname\tApple UFS volume name" }, 875 { 0, NULL } 876 }; 877 878 static void 879 usage(void) 880 { 881 int match; 882 const struct help_strings *hs; 883 884 if (mfs) { 885 fprintf(stderr, 886 "usage: %s [ fsoptions ] special-device mount-point\n", 887 getprogname()); 888 } else 889 fprintf(stderr, 890 "usage: %s [ fsoptions ] special-device%s\n", 891 getprogname(), 892 #ifdef COMPAT 893 " [device-type]"); 894 #else 895 ""); 896 #endif 897 fprintf(stderr, "where fsoptions are:\n"); 898 899 match = mfs ? MFS_MOUNT : NEWFS; 900 for (hs = help_strings; hs->flags != 0; hs++) 901 if (hs->flags & match) 902 fprintf(stderr, "\t%s\n", hs->str); 903 exit(1); 904 } 905
Indexes created Fri Sep 26 08:10:20 GMT 2025