newfs.c revision 1.74
1 /* $NetBSD: newfs.c,v 1.74 2003/10/15 00:25:28 dbj 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 1.74 2003/10/15 00:25:28 dbj 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> 115 116 #include "mntopts.h" 117 #include "dkcksum.h" 118 #include "extern.h" 119 120 struct mntopt mopts[] = { 121 MOPT_STDOPTS, 122 MOPT_ASYNC, 123 MOPT_UPDATE, 124 MOPT_GETARGS, 125 MOPT_NOATIME, 126 { NULL }, 127 }; 128 129 static struct disklabel *getdisklabel(char *, int); 130 static void rewritelabel(char *, int, struct disklabel *); 131 static gid_t mfs_group(const char *); 132 static uid_t mfs_user(const char *); 133 static int strsuftoi(const char *, const char *, int, int); 134 static void usage(void); 135 int main(int, char *[]); 136 137 #define COMPAT /* allow non-labeled disks */ 138 139 /* 140 * The following two constants set the default block and fragment sizes. 141 * Both constants must be a power of 2 and meet the following constraints: 142 * MINBSIZE <= DESBLKSIZE <= MAXBSIZE 143 * sectorsize <= DESFRAGSIZE <= DESBLKSIZE 144 * DESBLKSIZE / DESFRAGSIZE <= 8 145 */ 146 /* 147 * For file systems smaller than SMALL_FSSIZE we use the S_DFL_* defaults, 148 * otherwise if less than MEDIUM_FSSIZE use M_DFL_*, otherwise use 149 * L_DFL_*. 150 */ 151 #define SMALL_FSSIZE (20*1024*2) 152 #define S_DFL_FRAGSIZE 512 153 #define S_DFL_BLKSIZE 4096 154 #define MEDIUM_FSSIZE (1000*1024*2) 155 #define M_DFL_FRAGSIZE 1024 156 #define M_DFL_BLKSIZE 8192 157 #define L_DFL_FRAGSIZE 2048 158 #define L_DFL_BLKSIZE 16384 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; 221 struct disklabel *lp; 222 struct disklabel mfsfakelabel; 223 struct partition oldpartition; 224 struct statfs *mp; 225 int ch, fsi, fso, len, maxpartitions, n, Fflag, Iflag, Zflag, Vflag; 226 char *cp, *endp, *s1, *s2, *special; 227 const char *opstring; 228 long long llsize = 0; 229 int llsizemult = 0; 230 int dfl_fragsize, dfl_blksize; 231 #ifdef MFS 232 char mountfromname[100]; 233 pid_t pid, res; 234 struct statfs sf; 235 int status; 236 #endif 237 mode_t mfsmode; 238 uid_t mfsuid; 239 gid_t mfsgid; 240 241 cp = NULL; 242 fsi = fso = -1; 243 Fflag = Iflag = Zflag = 0; 244 Vflag = 0; 245 if (strstr(getprogname(), "mfs")) { 246 mfs = 1; 247 mfsmode = 01777; /* default mode for a /tmp-type directory */ 248 mfsuid = 0; /* user root */ 249 mfsgid = 0; /* group wheel */ 250 Nflag++; 251 } 252 253 maxpartitions = getmaxpartitions(); 254 if (maxpartitions > 26) 255 errx(1, "insane maxpartitions value %d", maxpartitions); 256 257 opstring = mfs ? 258 "NT:Va:b:c:d:e:f:g:h:i:m:n:o:p:s:u:" : 259 "B:FINO:VS:T:Za:b:c:d:e:f:g:h:i:l:m:n:o:p:r:s:u:v:"; 260 while ((ch = getopt(argc, argv, opstring)) != -1) 261 switch (ch) { 262 case 'B': 263 if (strcmp(optarg, "be") == 0) { 264 #if BYTE_ORDER == LITTLE_ENDIAN 265 needswap = 1; 266 #endif 267 } else if (strcmp(optarg, "le") == 0) { 268 #if BYTE_ORDER == BIG_ENDIAN 269 needswap = 1; 270 #endif 271 } else 272 usage(); 273 break; 274 case 'F': 275 Fflag = 1; 276 break; 277 case 'I': 278 Iflag = 1; 279 break; 280 case 'N': 281 Nflag = 1; 282 break; 283 case 'O': 284 Oflag = strsuftoi("format", optarg, 0, 2); 285 break; 286 case 'S': 287 sectorsize = strsuftoi("sector size", 288 optarg, 1, INT_MAX); 289 break; 290 #ifdef COMPAT 291 case 'T': 292 disktype = optarg; 293 break; 294 #endif 295 case 'V': 296 Vflag = 1; 297 break; 298 case 'Z': 299 Zflag = 1; 300 break; 301 case 'a': 302 maxcontig = strsuftoi("maximum contiguous blocks", 303 optarg, 1, INT_MAX); 304 break; 305 case 'b': 306 bsize = strsuftoi("block size", 307 optarg, MINBSIZE, MAXBSIZE); 308 break; 309 case 'c': /* was cylinders per group... */ 310 break; 311 case 'd': 312 maxbsize = strsuftoi("maximum extent size", 313 optarg, 0, INT_MAX); 314 break; 315 case 'e': 316 maxbpg = strsuftoi( 317 "blocks per file in a cylinder group", 318 optarg, 1, INT_MAX); 319 break; 320 case 'f': 321 fsize = strsuftoi("fragment size", 322 optarg, 1, MAXBSIZE); 323 break; 324 case 'g': 325 if (mfs) 326 mfsgid = mfs_group(optarg); 327 else { 328 avgfilesize = strsuftoi("average file size", 329 optarg, 1, INT_MAX); 330 } 331 break; 332 case 'h': 333 avgfpdir = strsuftoi("expected files per directory", 334 optarg, 1, INT_MAX); 335 break; 336 case 'i': 337 density = strsuftoi("bytes per inode", 338 optarg, 1, INT_MAX); 339 break; 340 case 'm': 341 minfree = strsuftoi("free space %", 342 optarg, 0, 99); 343 break; 344 case 'n': 345 num_inodes = strsuftoi("number of inodes", 346 optarg, 1, INT_MAX); 347 break; 348 case 'o': 349 if (mfs) 350 getmntopts(optarg, mopts, &mntflags, 0); 351 else { 352 if (strcmp(optarg, "space") == 0) 353 opt = FS_OPTSPACE; 354 else if (strcmp(optarg, "time") == 0) 355 opt = FS_OPTTIME; 356 else 357 errx(1, "%s %s", 358 "unknown optimization preference: ", 359 "use `space' or `time'."); 360 } 361 break; 362 case 'p': 363 if (mfs) { 364 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 365 errx(1, "bad mode `%s'", optarg); 366 } else 367 errx(1, "unknown option 'p'"); 368 break; 369 case 's': 370 llsize = strtoll(optarg, &endp, 10); 371 if ((((llsize == LLONG_MIN) || (llsize == LLONG_MAX)) && (errno == ERANGE)) 372 || (llsize == 0) || (endp[0] != '\0' && endp[1] != '\0')) 373 llsizemult = -1; 374 else { 375 switch (tolower((unsigned char)endp[0])) { 376 case 'b': 377 llsizemult = 1; 378 break; 379 case 'k': 380 llsizemult = 1024; 381 break; 382 case 'm': 383 llsizemult = 1024 * 1024; 384 break; 385 case 'g': 386 llsizemult = 1024 * 1024 * 1024; 387 break; 388 case '\0': 389 case 's': 390 llsizemult = 0; 391 break; 392 default: 393 llsizemult = -1; 394 } 395 } 396 if (llsizemult < 0) 397 errx(1, 398 "`%s' is not a valid number for file system size.", 399 optarg); 400 break; 401 case 'u': 402 if (mfs) 403 mfsuid = mfs_user(optarg); 404 else 405 errx(1, "deprecated option 'u'"); 406 break; 407 case 'v': 408 appleufs_volname = optarg; 409 if (strchr(appleufs_volname, ':') || strchr(appleufs_volname, '/')) 410 errx(1,"Apple UFS volume name cannot contain ':' or '/'"); 411 if (appleufs_volname[0] == '\0') 412 errx(1,"Apple UFS volume name cannot be zero length"); 413 isappleufs = 1; 414 break; 415 case '?': 416 default: 417 usage(); 418 } 419 argc -= optind; 420 argv += optind; 421 if (mntflags & MNT_GETARGS) 422 goto doit; 423 424 if (argc != 2 && (mfs || argc != 1)) 425 usage(); 426 427 special = argv[0]; 428 if (Fflag || mfs) { 429 /* 430 * it's a file system image or an MFS, so fake up a label. 431 * XXX 432 */ 433 if (!sectorsize) 434 sectorsize = DFL_SECSIZE; 435 436 if (Fflag) { 437 if (llsize <= 0) 438 errx(1, "need to specify positive size when using -F"); 439 if (llsizemult) 440 fssize = llsize * llsizemult / sectorsize; 441 else 442 fssize = llsize; 443 } 444 if (Fflag && !Nflag) { /* creating image in a regular file */ 445 fso = open(special, O_RDWR | O_CREAT, 0777); 446 if (fso == -1) 447 err(1, "can't open file %s", special); 448 if ((fsi = dup(fso)) == -1) 449 err(1, "can't dup(2) image fd"); 450 /* XXXLUKEM: only ftruncate() regular files ? */ 451 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 452 err(1, "can't resize %s to %lld", 453 special, (long long)fssize); 454 455 if (Zflag) { /* pre-zero (and de-sparce) the file */ 456 char *buf; 457 int bufsize, i; 458 off_t bufrem; 459 struct statfs sfs; 460 461 if (fstatfs(fso, &sfs) == -1) { 462 warn("can't fstatfs `%s'", special); 463 bufsize = 8192; 464 } else 465 bufsize = sfs.f_iosize; 466 467 if ((buf = calloc(1, bufsize)) == NULL) 468 err(1, "can't malloc buffer of %d", 469 bufsize); 470 bufrem = fssize * sectorsize; 471 printf( 472 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 473 special, (long long)bufrem, bufsize); 474 while (bufrem > 0) { 475 i = write(fso, buf, 476 MIN(bufsize, bufrem)); 477 if (i == -1) 478 err(1, "writing image"); 479 bufrem -= i; 480 } 481 free(buf); 482 } 483 484 } 485 486 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 487 mfsfakelabel.d_secsize = sectorsize; 488 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 489 mfsfakelabel.d_ntracks = 16; 490 mfsfakelabel.d_ncylinders = 16; 491 mfsfakelabel.d_secpercyl = 492 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 493 mfsfakelabel.d_secperunit = 494 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 495 mfsfakelabel.d_rpm = 10000; 496 mfsfakelabel.d_interleave = 1; 497 mfsfakelabel.d_npartitions = 1; 498 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 499 mfsfakelabel.d_partitions[0].p_fsize = 1024; 500 mfsfakelabel.d_partitions[0].p_frag = 8; 501 mfsfakelabel.d_partitions[0].p_cpg = 16; 502 503 lp = &mfsfakelabel; 504 pp = &mfsfakelabel.d_partitions[0]; 505 } else { /* !Fflag && !mfs */ 506 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 507 special = device; 508 if (fsi < 0) 509 err(1, "%s: open for read", special); 510 511 if (Nflag) { 512 fso = -1; 513 } else { 514 fso = open(special, O_WRONLY); 515 if (fso < 0) 516 err(1, "%s: open for write", special); 517 518 /* Bail if target special is mounted */ 519 n = getmntinfo(&mp, MNT_NOWAIT); 520 if (n == 0) 521 err(1, "%s: getmntinfo", special); 522 523 len = sizeof(_PATH_DEV) - 1; 524 s1 = special; 525 if (strncmp(_PATH_DEV, s1, len) == 0) 526 s1 += len; 527 528 while (--n >= 0) { 529 s2 = mp->f_mntfromname; 530 if (strncmp(_PATH_DEV, s2, len) == 0) { 531 s2 += len - 1; 532 *s2 = 'r'; 533 } 534 if (strcmp(s1, s2) == 0 || 535 strcmp(s1, &s2[1]) == 0) 536 errx(1, "%s is mounted on %s", 537 special, mp->f_mntonname); 538 ++mp; 539 } 540 } 541 cp = strchr(argv[0], '\0') - 1; 542 if (*cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 543 && !isdigit(*cp) 544 && !Vflag)) 545 errx(1, "can't figure out file system partition"); 546 #ifdef COMPAT 547 if (disktype == NULL) 548 disktype = argv[1]; 549 #endif 550 lp = getdisklabel(special, fsi); 551 if (Vflag || isdigit(*cp)) 552 pp = &lp->d_partitions[0]; 553 else 554 pp = &lp->d_partitions[*cp - 'a']; 555 if (pp->p_size == 0) 556 errx(1, "`%c' partition is unavailable", *cp); 557 if (pp->p_fstype == FS_APPLEUFS) 558 isappleufs = 1; 559 if (isappleufs) { 560 if (!Iflag && (pp->p_fstype != FS_APPLEUFS)) 561 errx(1, "`%c' partition type is not `Apple UFS'", *cp); 562 } else { 563 if (!Iflag && (pp->p_fstype != FS_BSDFFS)) 564 errx(1, "`%c' partition type is not `4.2BSD'", *cp); 565 } 566 } /* !Fflag && !mfs */ 567 568 if (sectorsize == 0) { 569 sectorsize = lp->d_secsize; 570 if (sectorsize <= 0) 571 errx(1, "no default sector size"); 572 } 573 if (llsize <= 0) 574 fssize = pp->p_size; 575 else 576 fssize = 0; 577 if (llsizemult) 578 fssize += llsize * llsizemult / sectorsize; 579 else 580 fssize += llsize; 581 if (((fssize <= 0) || (fssize > pp->p_size)) && !mfs && !Fflag) 582 errx(1, "maximum file system size on the `%c' partition is %d", 583 *cp, pp->p_size); 584 585 if (isappleufs) { 586 dfl_fragsize = APPLEUFS_DFL_FRAGSIZE; 587 dfl_blksize = APPLEUFS_DFL_BLKSIZE; 588 } else if (fssize < SMALL_FSSIZE) { 589 dfl_fragsize = S_DFL_FRAGSIZE; 590 dfl_blksize = S_DFL_BLKSIZE; 591 } else if (fssize < MEDIUM_FSSIZE) { 592 dfl_fragsize = M_DFL_FRAGSIZE; 593 dfl_blksize = M_DFL_BLKSIZE; 594 } else { 595 dfl_fragsize = L_DFL_FRAGSIZE; 596 dfl_blksize = L_DFL_BLKSIZE; 597 } 598 599 if (fsize == 0) { 600 fsize = pp->p_fsize; 601 if (fsize <= 0) 602 fsize = MAX(dfl_fragsize, lp->d_secsize); 603 } 604 if (bsize == 0) { 605 bsize = pp->p_frag * pp->p_fsize; 606 if (bsize <= 0) 607 bsize = MIN(dfl_blksize, 8 * fsize); 608 } 609 610 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 611 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 612 fsize,APPLEUFS_DFL_FRAGSIZE); 613 } 614 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 615 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 616 bsize,APPLEUFS_DFL_BLKSIZE); 617 } 618 619 /* 620 * Maxcontig sets the default for the maximum number of blocks 621 * that may be allocated sequentially. With filesystem clustering 622 * it is possible to allocate contiguous blocks up to the maximum 623 * transfer size permitted by the controller or buffering. 624 */ 625 if (maxcontig == 0) 626 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 627 if (density == 0) 628 density = NFPI * fsize; 629 if (minfree < MINFREE && opt != FS_OPTSPACE) { 630 warnx("%s %s %d%%", "Warning: changing optimization to space", 631 "because minfree is less than", MINFREE); 632 opt = FS_OPTSPACE; 633 } 634 if (maxbpg == 0) { 635 if (Oflag <= 1) 636 maxbpg = MAXBLKPG_UFS1(bsize); 637 else 638 maxbpg = MAXBLKPG_UFS2(bsize); 639 } 640 oldpartition = *pp; 641 mkfs(pp, special, fsi, fso, mfsmode, mfsuid, mfsgid); 642 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 643 rewritelabel(special, fso, lp); 644 if (!Nflag) 645 close(fso); 646 close(fsi); 647 #ifdef MFS 648 if (mfs) { 649 struct mfs_args args; 650 651 switch (pid = fork()) { 652 case -1: 653 perror("mfs"); 654 exit(10); 655 case 0: 656 (void)snprintf(mountfromname, sizeof(mountfromname), 657 "mfs:%d", getpid()); 658 break; 659 default: 660 (void)snprintf(mountfromname, sizeof(mountfromname), 661 "mfs:%d", pid); 662 for (;;) { 663 /* 664 * spin until the mount succeeds 665 * or the child exits 666 */ 667 usleep(1); 668 669 /* 670 * XXX Here is a race condition: another process 671 * can mount a filesystem which hides our 672 * ramdisk before we see the success. 673 */ 674 if (statfs(argv[1], &sf) < 0) 675 err(88, "statfs %s", argv[1]); 676 if (!strcmp(sf.f_mntfromname, mountfromname) && 677 !strncmp(sf.f_mntonname, argv[1], 678 MNAMELEN) && 679 !strcmp(sf.f_fstypename, "mfs")) 680 exit(0); 681 682 res = waitpid(pid, &status, WNOHANG); 683 if (res == -1) 684 err(11, "waitpid"); 685 if (res != pid) 686 continue; 687 if (WIFEXITED(status)) { 688 if (WEXITSTATUS(status) == 0) 689 exit(0); 690 errx(1, "%s: mount: %s", argv[1], 691 strerror(WEXITSTATUS(status))); 692 } else 693 errx(11, "abnormal termination"); 694 } 695 /* NOTREACHED */ 696 } 697 698 (void) setsid(); 699 (void) close(0); 700 (void) close(1); 701 (void) close(2); 702 (void) chdir("/"); 703 704 args.fspec = mountfromname; 705 args.export.ex_root = -2; 706 if (mntflags & MNT_RDONLY) 707 args.export.ex_flags = MNT_EXRDONLY; 708 else 709 args.export.ex_flags = 0; 710 args.base = membase; 711 args.size = fssize * sectorsize; 712 doit: 713 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) { 714 if (mntflags & MNT_GETARGS) 715 err(1, "mount `%s' failed", argv[1]); 716 exit(errno); /* parent prints message */ 717 } 718 if (mntflags & MNT_GETARGS) 719 printf("base=%p, size=%ld\n", args.base, args.size); 720 } 721 #endif 722 exit(0); 723 } 724 725 #ifdef COMPAT 726 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 727 #else 728 const char lmsg[] = "%s: can't read disk label"; 729 #endif 730 731 static struct disklabel * 732 getdisklabel(char *s, volatile int fd) 733 /* XXX why is fs volatile?! */ 734 { 735 static struct disklabel lab; 736 737 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 738 #ifdef COMPAT 739 if (disktype) { 740 struct disklabel *lp; 741 742 unlabeled++; 743 lp = getdiskbyname(disktype); 744 if (lp == NULL) 745 errx(1, "%s: unknown disk type", disktype); 746 return (lp); 747 } 748 #endif 749 warn("ioctl (GDINFO)"); 750 errx(1, lmsg, s); 751 } 752 return (&lab); 753 } 754 755 static void 756 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 757 /* XXX why is fd volatile?! */ 758 { 759 #ifdef COMPAT 760 if (unlabeled) 761 return; 762 #endif 763 lp->d_checksum = 0; 764 lp->d_checksum = dkcksum(lp); 765 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 766 if (errno == ESRCH) 767 return; 768 warn("ioctl (WDINFO)"); 769 errx(1, "%s: can't rewrite disk label", s); 770 } 771 #if __vax__ 772 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 773 int i; 774 int cfd; 775 daddr_t alt; 776 off_t loff; 777 char specname[64]; 778 char blk[1024]; 779 char *cp; 780 781 /* 782 * Make name for 'c' partition. 783 */ 784 strlcpy(specname, s, sizeof(specname)); 785 cp = specname + strlen(specname) - 1; 786 if (!isdigit(*cp)) 787 *cp = 'c'; 788 cfd = open(specname, O_WRONLY); 789 if (cfd < 0) 790 err(1, "%s: open", specname); 791 if ((loff = getlabeloffset()) < 0) 792 err(1, "getlabeloffset()"); 793 memset(blk, 0, sizeof(blk)); 794 *(struct disklabel *)(blk + loff) = *lp; 795 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 796 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 797 off_t offset; 798 799 offset = alt + i; 800 offset *= lp->d_secsize; 801 if (lseek(cfd, offset, SEEK_SET) == -1) 802 err(1, "lseek to badsector area: "); 803 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 804 warn("alternate label %d write", i/2); 805 } 806 close(cfd); 807 } 808 #endif 809 } 810 811 static gid_t 812 mfs_group(const char *gname) 813 { 814 struct group *gp; 815 816 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 817 errx(1, "unknown gname %s", gname); 818 return gp ? gp->gr_gid : atoi(gname); 819 } 820 821 static uid_t 822 mfs_user(const char *uname) 823 { 824 struct passwd *pp; 825 826 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 827 errx(1, "unknown user %s", uname); 828 return pp ? pp->pw_uid : atoi(uname); 829 } 830 831 static int 832 strsuftoi(const char *desc, const char *arg, int min, int max) 833 { 834 long long result; 835 char *ep; 836 837 errno = 0; 838 result = strtoll(arg, &ep, 10); 839 if (ep[0] != '\0' && ep[1] != '\0') 840 errx(1, "%s `%s' is not a valid number.", desc, arg); 841 switch (tolower((unsigned char)ep[0])) { 842 case '\0': 843 case 'b': 844 break; 845 case 'k': 846 result <<= 10; 847 break; 848 case 'm': 849 result <<= 20; 850 break; 851 case 'g': 852 result <<= 30; 853 break; 854 default: 855 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 856 } 857 if (result < min) 858 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 859 desc, arg, result, min); 860 if (result > max) 861 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 862 desc, arg, result, max); 863 return ((int)result); 864 } 865 866 #define NEWFS 1 867 #define MFS_MOUNT 2 868 #define BOTH NEWFS | MFS_MOUNT 869 870 struct help_strings { 871 int flags; 872 const char *str; 873 } const help_strings[] = { 874 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 875 { NEWFS, "-F \t\tcreate file system image in regular file" }, 876 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 877 { BOTH, "-N \t\tdo not create file system, just print out " 878 "parameters" }, 879 { NEWFS, "-O N\t\tfilesystem format: 0 ==> 4.3BSD, 1 ==> FFS, 2==> UFS2" }, 880 { NEWFS, "-S secsize\tsector size" }, 881 #ifdef COMPAT 882 { NEWFS, "-T disktype\tdisk type" }, 883 #endif 884 { BOTH, "-V \t\tignore partition for Vinum" }, 885 { NEWFS, "-Z \t\tpre-zero the image file (with -F)" }, 886 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 887 { BOTH, "-b bsize\tblock size" }, 888 { BOTH, "-c blocks\tblocks per cylinder group" }, 889 { BOTH, "-d maxbsize\t maximum extent size" }, 890 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 891 }, 892 { BOTH, "-f fsize\tfrag size" }, 893 { NEWFS, "-g avgfilesize\taverage file size" }, 894 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 895 { BOTH, "-h avgfpdir\taverage files per directory" }, 896 { BOTH, "-i density\tnumber of bytes per inode" }, 897 { BOTH, "-m minfree\tminimum free space %%" }, 898 { BOTH, "-n inodes\tnumder of inodes" }, 899 { BOTH, "-o optim\toptimization preference (`space' or `time')" 900 }, 901 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 902 { BOTH, "-s fssize\tfile system size (sectors)" }, 903 { MFS_MOUNT, "-u username\tuser name of mount point" }, 904 { NEWFS, "-v volname\tApple UFS volume name" }, 905 { 0, NULL } 906 }; 907 908 static void 909 usage(void) 910 { 911 int match; 912 const struct help_strings *hs; 913 914 if (mfs) { 915 fprintf(stderr, 916 "usage: %s [ fsoptions ] special-device mount-point\n", 917 getprogname()); 918 } else 919 fprintf(stderr, 920 "usage: %s [ fsoptions ] special-device%s\n", 921 getprogname(), 922 #ifdef COMPAT 923 " [device-type]"); 924 #else 925 ""); 926 #endif 927 fprintf(stderr, "where fsoptions are:\n"); 928 929 match = mfs ? MFS_MOUNT : NEWFS; 930 for (hs = help_strings; hs->flags != 0; hs++) 931 if (hs->flags & match) 932 fprintf(stderr, "\t%s\n", hs->str); 933 exit(1); 934 } 935
Indexes created Mon Oct 20 20:10:13 GMT 2025