newfs.c revision 1.70
1 /* $NetBSD: newfs.c,v 1.70 2003/09/11 12:19:45 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 1.70 2003/09/11 12:19:45 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> 115 116 #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; 226 char *cp, *endp, *s1, *s2, *special; 227 const char *opstring; 228 long long llsize; 229 int dfl_fragsize, dfl_blksize; 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; 237 uid_t mfsuid; 238 gid_t mfsgid; 239 240 cp = NULL; 241 fsi = fso = -1; 242 Fflag = Iflag = Zflag = 0; 243 if (strstr(getprogname(), "mfs")) { 244 mfs = 1; 245 mfsmode = 01777; /* default mode for a /tmp-type directory */ 246 mfsuid = 0; /* user root */ 247 mfsgid = 0; /* group wheel */ 248 Nflag++; 249 } 250 251 maxpartitions = getmaxpartitions(); 252 if (maxpartitions > 26) 253 errx(1, "insane maxpartitions value %d", maxpartitions); 254 255 opstring = mfs ? 256 "NT:a:b:c:d:e:f:g:h:i:m:n:o:p:s:u:" : 257 "B:FINO:S:T:Za:b:c:d:e:f:g:h:i:l:m:n:o:p:r:s:u:v:"; 258 while ((ch = getopt(argc, argv, opstring)) != -1) 259 switch (ch) { 260 case 'B': 261 if (strcmp(optarg, "be") == 0) { 262 #if BYTE_ORDER == LITTLE_ENDIAN 263 needswap = 1; 264 #endif 265 } else if (strcmp(optarg, "le") == 0) { 266 #if BYTE_ORDER == BIG_ENDIAN 267 needswap = 1; 268 #endif 269 } else 270 usage(); 271 break; 272 case 'F': 273 Fflag = 1; 274 break; 275 case 'I': 276 Iflag = 1; 277 break; 278 case 'N': 279 Nflag = 1; 280 break; 281 case 'O': 282 Oflag = strsuftoi("format", optarg, 0, 2); 283 break; 284 case 'S': 285 sectorsize = strsuftoi("sector size", 286 optarg, 1, INT_MAX); 287 break; 288 #ifdef COMPAT 289 case 'T': 290 disktype = optarg; 291 break; 292 #endif 293 case 'Z': 294 Zflag = 1; 295 break; 296 case 'a': 297 maxcontig = strsuftoi("maximum contiguous blocks", 298 optarg, 1, INT_MAX); 299 break; 300 case 'b': 301 bsize = strsuftoi("block size", 302 optarg, MINBSIZE, MAXBSIZE); 303 break; 304 case 'c': /* was cylinders per group... */ 305 break; 306 case 'd': 307 maxbsize = strsuftoi("maximum extent size", 308 optarg, 0, INT_MAX); 309 break; 310 case 'e': 311 maxbpg = strsuftoi( 312 "blocks per file in a cylinder group", 313 optarg, 1, INT_MAX); 314 break; 315 case 'f': 316 fsize = strsuftoi("fragment size", 317 optarg, 1, MAXBSIZE); 318 break; 319 case 'g': 320 if (mfs) 321 mfsgid = mfs_group(optarg); 322 else { 323 avgfilesize = strsuftoi("average file size", 324 optarg, 1, INT_MAX); 325 } 326 break; 327 case 'h': 328 avgfpdir = strsuftoi("expected files per directory", 329 optarg, 1, INT_MAX); 330 break; 331 case 'i': 332 density = strsuftoi("bytes per inode", 333 optarg, 1, INT_MAX); 334 break; 335 case 'm': 336 minfree = strsuftoi("free space %", 337 optarg, 0, 99); 338 break; 339 case 'n': 340 num_inodes = strsuftoi("number of inodes", 341 optarg, 1, INT_MAX); 342 break; 343 case 'o': 344 if (mfs) 345 getmntopts(optarg, mopts, &mntflags, 0); 346 else { 347 if (strcmp(optarg, "space") == 0) 348 opt = FS_OPTSPACE; 349 else if (strcmp(optarg, "time") == 0) 350 opt = FS_OPTTIME; 351 else 352 errx(1, "%s %s", 353 "unknown optimization preference: ", 354 "use `space' or `time'."); 355 } 356 break; 357 case 'p': 358 if (mfs) { 359 if ((mfsmode = strtol(optarg, NULL, 8)) <= 0) 360 errx(1, "bad mode `%s'", optarg); 361 } else 362 errx(1, "unknown option 'p'"); 363 break; 364 case 's': 365 llsize = strtoll(optarg, &endp, 10); 366 if (endp[0] != '\0' && endp[1] != '\0') 367 llsize = -1; 368 else { 369 int ssiz; 370 371 ssiz = (sectorsize ? sectorsize : DFL_SECSIZE); 372 switch (tolower((unsigned char)endp[0])) { 373 case 'b': 374 llsize /= ssiz; 375 break; 376 case 'k': 377 llsize *= 1024 / ssiz; 378 break; 379 case 'm': 380 llsize *= 1024 * 1024 / ssiz; 381 break; 382 case 'g': 383 llsize *= 1024 * 1024 * 1024 / ssiz; 384 break; 385 case '\0': 386 case 's': 387 break; 388 default: 389 llsize = -1; 390 } 391 } 392 if (llsize > LLONG_MAX) 393 errx(1, "file system size `%s' is too large.", 394 optarg); 395 if (llsize <= 0) 396 errx(1, 397 "`%s' is not a valid number for file system size.", 398 optarg); 399 fssize = llsize; 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 && !Nflag) { /* creating image in a regular file */ 437 if (fssize == 0) 438 errx(1, "need to specify size when using -F"); 439 fso = open(special, O_RDWR | O_CREAT, 0777); 440 if (fso == -1) 441 err(1, "can't open file %s", special); 442 if ((fsi = dup(fso)) == -1) 443 err(1, "can't dup(2) image fd"); 444 /* XXXLUKEM: only ftruncate() regular files ? */ 445 if (ftruncate(fso, (off_t)fssize * sectorsize) == -1) 446 err(1, "can't resize %s to %lld", 447 special, (long long)fssize); 448 449 if (Zflag) { /* pre-zero (and de-sparce) the file */ 450 char *buf; 451 int bufsize, i; 452 off_t bufrem; 453 struct statfs sfs; 454 455 if (fstatfs(fso, &sfs) == -1) { 456 warn("can't fstatfs `%s'", special); 457 bufsize = 8192; 458 } else 459 bufsize = sfs.f_iosize; 460 461 if ((buf = calloc(1, bufsize)) == NULL) 462 err(1, "can't malloc buffer of %d", 463 bufsize); 464 bufrem = fssize * sectorsize; 465 printf( 466 "Creating file system image in `%s', size %lld bytes, in %d byte chunks.\n", 467 special, (long long)bufrem, bufsize); 468 while (bufrem > 0) { 469 i = write(fso, buf, 470 MIN(bufsize, bufrem)); 471 if (i == -1) 472 err(1, "writing image"); 473 bufrem -= i; 474 } 475 free(buf); 476 } 477 478 } 479 480 memset(&mfsfakelabel, 0, sizeof(mfsfakelabel)); 481 mfsfakelabel.d_secsize = sectorsize; 482 mfsfakelabel.d_nsectors = 64; /* these 3 add up to 16MB */ 483 mfsfakelabel.d_ntracks = 16; 484 mfsfakelabel.d_ncylinders = 16; 485 mfsfakelabel.d_secpercyl = 486 mfsfakelabel.d_nsectors * mfsfakelabel.d_ntracks; 487 mfsfakelabel.d_secperunit = 488 mfsfakelabel.d_ncylinders * mfsfakelabel.d_secpercyl; 489 mfsfakelabel.d_rpm = 10000; 490 mfsfakelabel.d_interleave = 1; 491 mfsfakelabel.d_npartitions = 1; 492 mfsfakelabel.d_partitions[0].p_size = mfsfakelabel.d_secperunit; 493 mfsfakelabel.d_partitions[0].p_fsize = 1024; 494 mfsfakelabel.d_partitions[0].p_frag = 8; 495 mfsfakelabel.d_partitions[0].p_cpg = 16; 496 497 lp = &mfsfakelabel; 498 pp = &mfsfakelabel.d_partitions[0]; 499 } else { /* !Fflag && !mfs */ 500 fsi = opendisk(special, O_RDONLY, device, sizeof(device), 0); 501 special = device; 502 if (fsi < 0) 503 err(1, "%s: open for read", special); 504 505 if (Nflag) { 506 fso = -1; 507 } else { 508 fso = open(special, O_WRONLY); 509 if (fso < 0) 510 err(1, "%s: open for write", special); 511 512 /* Bail if target special is mounted */ 513 n = getmntinfo(&mp, MNT_NOWAIT); 514 if (n == 0) 515 err(1, "%s: getmntinfo", special); 516 517 len = sizeof(_PATH_DEV) - 1; 518 s1 = special; 519 if (strncmp(_PATH_DEV, s1, len) == 0) 520 s1 += len; 521 522 while (--n >= 0) { 523 s2 = mp->f_mntfromname; 524 if (strncmp(_PATH_DEV, s2, len) == 0) { 525 s2 += len - 1; 526 *s2 = 'r'; 527 } 528 if (strcmp(s1, s2) == 0 || 529 strcmp(s1, &s2[1]) == 0) 530 errx(1, "%s is mounted on %s", 531 special, mp->f_mntonname); 532 ++mp; 533 } 534 } 535 cp = strchr(argv[0], '\0') - 1; 536 if (cp == 0 || ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 537 && !isdigit(*cp))) 538 errx(1, "can't figure out file system partition"); 539 #ifdef COMPAT 540 if (disktype == NULL) 541 disktype = argv[1]; 542 #endif 543 lp = getdisklabel(special, fsi); 544 if (isdigit(*cp)) 545 pp = &lp->d_partitions[0]; 546 else 547 pp = &lp->d_partitions[*cp - 'a']; 548 if (pp->p_size == 0) 549 errx(1, "`%c' partition is unavailable", *cp); 550 if (pp->p_fstype == FS_APPLEUFS) 551 isappleufs = 1; 552 if (isappleufs) { 553 if (!Iflag && (pp->p_fstype != FS_APPLEUFS)) 554 errx(1, "`%c' partition type is not `Apple UFS'", *cp); 555 } else { 556 if (!Iflag && (pp->p_fstype != FS_BSDFFS)) 557 errx(1, "`%c' partition type is not `4.2BSD'", *cp); 558 } 559 } /* !Fflag && !mfs */ 560 561 if (fssize == 0) 562 fssize = pp->p_size; 563 if (fssize > pp->p_size && !mfs && !Fflag) 564 errx(1, "maximum file system size on the `%c' partition is %d", 565 *cp, pp->p_size); 566 if (sectorsize == 0) { 567 sectorsize = lp->d_secsize; 568 if (sectorsize <= 0) 569 errx(1, "no default sector size"); 570 } 571 572 if (isappleufs) { 573 dfl_fragsize = APPLEUFS_DFL_FRAGSIZE; 574 dfl_blksize = APPLEUFS_DFL_BLKSIZE; 575 } else if (fssize < SMALL_FSSIZE) { 576 dfl_fragsize = S_DFL_FRAGSIZE; 577 dfl_blksize = S_DFL_BLKSIZE; 578 } else if (fssize < MEDIUM_FSSIZE) { 579 dfl_fragsize = M_DFL_FRAGSIZE; 580 dfl_blksize = M_DFL_BLKSIZE; 581 } else { 582 dfl_fragsize = L_DFL_FRAGSIZE; 583 dfl_blksize = L_DFL_BLKSIZE; 584 } 585 586 if (fsize == 0) { 587 fsize = pp->p_fsize; 588 if (fsize <= 0) 589 fsize = MAX(dfl_fragsize, lp->d_secsize); 590 } 591 if (bsize == 0) { 592 bsize = pp->p_frag * pp->p_fsize; 593 if (bsize <= 0) 594 bsize = MIN(dfl_blksize, 8 * fsize); 595 } 596 597 if (isappleufs && (fsize < APPLEUFS_DFL_FRAGSIZE)) { 598 warnx("Warning: chosen fsize of %d is less than Apple UFS minimum of %d", 599 fsize,APPLEUFS_DFL_FRAGSIZE); 600 } 601 if (isappleufs && (bsize > APPLEUFS_DFL_BLKSIZE)) { 602 warnx("Warning: chosen bsize of %d is greater than Apple UFS maximum of %d", 603 bsize,APPLEUFS_DFL_BLKSIZE); 604 } 605 606 /* 607 * Maxcontig sets the default for the maximum number of blocks 608 * that may be allocated sequentially. With filesystem clustering 609 * it is possible to allocate contiguous blocks up to the maximum 610 * transfer size permitted by the controller or buffering. 611 */ 612 if (maxcontig == 0) 613 maxcontig = MAX(1, MIN(MAXPHYS, MAXBSIZE) / bsize); 614 if (density == 0) 615 density = NFPI * fsize; 616 if (minfree < MINFREE && opt != FS_OPTSPACE) { 617 warnx("%s %s %d%%", "Warning: changing optimization to space", 618 "because minfree is less than", MINFREE); 619 opt = FS_OPTSPACE; 620 } 621 if (maxbpg == 0) { 622 if (Oflag <= 1) 623 maxbpg = MAXBLKPG_UFS1(bsize); 624 else 625 maxbpg = MAXBLKPG_UFS2(bsize); 626 } 627 oldpartition = *pp; 628 mkfs(pp, special, fsi, fso, mfsmode, mfsuid, mfsgid); 629 if (!Nflag && memcmp(pp, &oldpartition, sizeof(oldpartition)) && !Fflag) 630 rewritelabel(special, fso, lp); 631 if (!Nflag) 632 close(fso); 633 close(fsi); 634 #ifdef MFS 635 if (mfs) { 636 struct mfs_args args; 637 638 switch (pid = fork()) { 639 case -1: 640 perror("mfs"); 641 exit(10); 642 case 0: 643 (void)snprintf(mountfromname, sizeof(mountfromname), 644 "mfs:%d", getpid()); 645 break; 646 default: 647 (void)snprintf(mountfromname, sizeof(mountfromname), 648 "mfs:%d", pid); 649 for (;;) { 650 /* 651 * spin until the mount succeeds 652 * or the child exits 653 */ 654 usleep(1); 655 656 /* 657 * XXX Here is a race condition: another process 658 * can mount a filesystem which hides our 659 * ramdisk before we see the success. 660 */ 661 if (statfs(argv[1], &sf) < 0) 662 err(88, "statfs %s", argv[1]); 663 if (!strcmp(sf.f_mntfromname, mountfromname) && 664 !strncmp(sf.f_mntonname, argv[1], 665 MNAMELEN) && 666 !strcmp(sf.f_fstypename, "mfs")) 667 exit(0); 668 669 res = waitpid(pid, &status, WNOHANG); 670 if (res == -1) 671 err(11, "waitpid"); 672 if (res != pid) 673 continue; 674 if (WIFEXITED(status)) { 675 if (WEXITSTATUS(status) == 0) 676 exit(0); 677 errx(1, "%s: mount: %s", argv[1], 678 strerror(WEXITSTATUS(status))); 679 } else 680 errx(11, "abnormal termination"); 681 } 682 /* NOTREACHED */ 683 } 684 685 (void) setsid(); 686 (void) close(0); 687 (void) close(1); 688 (void) close(2); 689 (void) chdir("/"); 690 691 args.fspec = mountfromname; 692 args.export.ex_root = -2; 693 if (mntflags & MNT_RDONLY) 694 args.export.ex_flags = MNT_EXRDONLY; 695 else 696 args.export.ex_flags = 0; 697 args.base = membase; 698 args.size = fssize * sectorsize; 699 doit: 700 if (mount(MOUNT_MFS, argv[1], mntflags, &args) < 0) { 701 if (mntflags & MNT_GETARGS) 702 err(1, "mount `%s' failed", argv[1]); 703 exit(errno); /* parent prints message */ 704 } 705 if (mntflags & MNT_GETARGS) 706 printf("base=%p, size=%ld\n", args.base, args.size); 707 } 708 #endif 709 exit(0); 710 } 711 712 #ifdef COMPAT 713 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 714 #else 715 const char lmsg[] = "%s: can't read disk label"; 716 #endif 717 718 static struct disklabel * 719 getdisklabel(char *s, volatile int fd) 720 /* XXX why is fs volatile?! */ 721 { 722 static struct disklabel lab; 723 724 if (ioctl(fd, DIOCGDINFO, &lab) < 0) { 725 #ifdef COMPAT 726 if (disktype) { 727 struct disklabel *lp; 728 729 unlabeled++; 730 lp = getdiskbyname(disktype); 731 if (lp == NULL) 732 errx(1, "%s: unknown disk type", disktype); 733 return (lp); 734 } 735 #endif 736 warn("ioctl (GDINFO)"); 737 errx(1, lmsg, s); 738 } 739 return (&lab); 740 } 741 742 static void 743 rewritelabel(char *s, volatile int fd, struct disklabel *lp) 744 /* XXX why is fd volatile?! */ 745 { 746 #ifdef COMPAT 747 if (unlabeled) 748 return; 749 #endif 750 lp->d_checksum = 0; 751 lp->d_checksum = dkcksum(lp); 752 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 753 if (errno == ESRCH) 754 return; 755 warn("ioctl (WDINFO)"); 756 errx(1, "%s: can't rewrite disk label", s); 757 } 758 #if __vax__ 759 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 760 int i; 761 int cfd; 762 daddr_t alt; 763 off_t loff; 764 char specname[64]; 765 char blk[1024]; 766 char *cp; 767 768 /* 769 * Make name for 'c' partition. 770 */ 771 strlcpy(specname, s, sizeof(specname)); 772 cp = specname + strlen(specname) - 1; 773 if (!isdigit(*cp)) 774 *cp = 'c'; 775 cfd = open(specname, O_WRONLY); 776 if (cfd < 0) 777 err(1, "%s: open", specname); 778 if ((loff = getlabeloffset()) < 0) 779 err(1, "getlabeloffset()"); 780 memset(blk, 0, sizeof(blk)); 781 *(struct disklabel *)(blk + loff) = *lp; 782 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 783 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 784 off_t offset; 785 786 offset = alt + i; 787 offset *= lp->d_secsize; 788 if (lseek(cfd, offset, SEEK_SET) == -1) 789 err(1, "lseek to badsector area: "); 790 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 791 warn("alternate label %d write", i/2); 792 } 793 close(cfd); 794 } 795 #endif 796 } 797 798 static gid_t 799 mfs_group(const char *gname) 800 { 801 struct group *gp; 802 803 if (!(gp = getgrnam(gname)) && !isdigit((unsigned char)*gname)) 804 errx(1, "unknown gname %s", gname); 805 return gp ? gp->gr_gid : atoi(gname); 806 } 807 808 static uid_t 809 mfs_user(const char *uname) 810 { 811 struct passwd *pp; 812 813 if (!(pp = getpwnam(uname)) && !isdigit((unsigned char)*uname)) 814 errx(1, "unknown user %s", uname); 815 return pp ? pp->pw_uid : atoi(uname); 816 } 817 818 static int 819 strsuftoi(const char *desc, const char *arg, int min, int max) 820 { 821 long long result; 822 char *ep; 823 824 errno = 0; 825 result = strtoll(arg, &ep, 10); 826 if (ep[0] != '\0' && ep[1] != '\0') 827 errx(1, "%s `%s' is not a valid number.", desc, arg); 828 switch (tolower((unsigned char)ep[0])) { 829 case '\0': 830 case 'b': 831 break; 832 case 'k': 833 result <<= 10; 834 break; 835 case 'm': 836 result <<= 20; 837 break; 838 case 'g': 839 result <<= 30; 840 break; 841 default: 842 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 843 } 844 if (result < min) 845 errx(1, "%s `%s' (%lld) is less than minimum (%d).", 846 desc, arg, result, min); 847 if (result > max) 848 errx(1, "%s `%s' (%lld) is greater than maximum (%d).", 849 desc, arg, result, max); 850 return ((int)result); 851 } 852 853 #define NEWFS 1 854 #define MFS_MOUNT 2 855 #define BOTH NEWFS | MFS_MOUNT 856 857 struct help_strings { 858 int flags; 859 const char *str; 860 } const help_strings[] = { 861 { NEWFS, "-B byteorder\tbyte order (`be' or `le')" }, 862 { NEWFS, "-F \t\tcreate file system image in regular file" }, 863 { NEWFS, "-I \t\tdo not check that the file system type is '4.2BSD'" }, 864 { BOTH, "-N \t\tdo not create file system, just print out " 865 "parameters" }, 866 { NEWFS, "-O N\t\tfilesystem format: 0 ==> 4.3BSD, 1 ==> FFS, 2==> UFS2" }, 867 { NEWFS, "-S secsize\tsector size" }, 868 #ifdef COMPAT 869 { NEWFS, "-T disktype\tdisk type" }, 870 #endif 871 { NEWFS, "-Z \t\tpre-zero the image file (with -F)" }, 872 { BOTH, "-a maxcontig\tmaximum contiguous blocks" }, 873 { BOTH, "-b bsize\tblock size" }, 874 { BOTH, "-c blocks\tblocks per cylinder group" }, 875 { BOTH, "-d maxbsize\t maximum extent size" }, 876 { BOTH, "-e maxbpg\tmaximum blocks per file in a cylinder group" 877 }, 878 { BOTH, "-f fsize\tfrag size" }, 879 { NEWFS, "-g avgfilesize\taverage file size" }, 880 { MFS_MOUNT, "-g groupname\tgroup name of mount point" }, 881 { BOTH, "-h avgfpdir\taverage files per directory" }, 882 { BOTH, "-i density\tnumber of bytes per inode" }, 883 { BOTH, "-m minfree\tminimum free space %%" }, 884 { BOTH, "-n inodes\tnumder of inodes" }, 885 { BOTH, "-o optim\toptimization preference (`space' or `time')" 886 }, 887 { MFS_MOUNT, "-p perm\t\tpermissions (in octal)" }, 888 { BOTH, "-s fssize\tfile system size (sectors)" }, 889 { MFS_MOUNT, "-u username\tuser name of mount point" }, 890 { NEWFS, "-v volname\tApple UFS volume name" }, 891 { 0, NULL } 892 }; 893 894 static void 895 usage(void) 896 { 897 int match; 898 const struct help_strings *hs; 899 900 if (mfs) { 901 fprintf(stderr, 902 "usage: %s [ fsoptions ] special-device mount-point\n", 903 getprogname()); 904 } else 905 fprintf(stderr, 906 "usage: %s [ fsoptions ] special-device%s\n", 907 getprogname(), 908 #ifdef COMPAT 909 " [device-type]"); 910 #else 911 ""); 912 #endif 913 fprintf(stderr, "where fsoptions are:\n"); 914 915 match = mfs ? MFS_MOUNT : NEWFS; 916 for (hs = help_strings; hs->flags != 0; hs++) 917 if (hs->flags & match) 918 fprintf(stderr, "\t%s\n", hs->str); 919 exit(1); 920 } 921
Indexes created Fri Sep 26 20:09:58 GMT 2025