newfs.c revision 1.15.2.2
1 /* $NetBSD: newfs.c,v 1.15.2.2 2006/05/20 22:46:22 riz Exp $ */ 2 3 /*- 4 * Copyright (c) 1989, 1992, 1993 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 #include <sys/cdefs.h> 33 #ifndef lint 34 __COPYRIGHT("@(#) Copyright (c) 1989, 1992, 1993\n\ 35 The Regents of the University of California. All rights reserved.\n"); 36 #endif /* not lint */ 37 38 #ifndef lint 39 #if 0 40 static char sccsid[] = "@(#)newfs.c 8.5 (Berkeley) 5/24/95"; 41 #else 42 __RCSID("$NetBSD: newfs.c,v 1.15.2.2 2006/05/20 22:46:22 riz Exp $"); 43 #endif 44 #endif /* not lint */ 45 46 /* 47 * newfs: friendly front end to mkfs 48 */ 49 #include <sys/param.h> 50 #include <sys/ucred.h> 51 #include <sys/stat.h> 52 #include <sys/ioctl.h> 53 #include <sys/disklabel.h> 54 #include <sys/file.h> 55 #include <sys/mount.h> 56 #include <sys/sysctl.h> 57 #include <sys/time.h> 58 59 #include <ufs/ufs/dir.h> 60 #include <ufs/ufs/dinode.h> 61 #include <ufs/lfs/lfs.h> 62 63 #include <disktab.h> 64 #include <err.h> 65 #include <errno.h> 66 #include <unistd.h> 67 #include <stdio.h> 68 #include <stdlib.h> 69 #include <ctype.h> 70 #include <string.h> 71 #include <paths.h> 72 #include <util.h> 73 #include "config.h" 74 #include "extern.h" 75 #include "bufcache.h" 76 77 #define COMPAT /* allow non-labeled disks */ 78 79 int Nflag = 0; /* run without writing file system */ 80 int fssize; /* file system size */ 81 int sectorsize; /* bytes/sector */ 82 int fsize = 0; /* fragment size */ 83 int bsize = 0; /* block size */ 84 int ibsize = 0; /* inode block size */ 85 int interleave = 0; /* segment interleave */ 86 int minfree = MINFREE; /* free space threshold */ 87 int minfreeseg = 0; /* segments not counted in bfree total */ 88 int resvseg = 0; /* free segments reserved for the cleaner */ 89 u_int32_t roll_id = 0; /* roll-forward id */ 90 u_long memleft; /* virtual memory available */ 91 caddr_t membase; /* start address of memory based filesystem */ 92 #ifdef COMPAT 93 char *disktype; 94 int unlabeled; 95 #endif 96 int preen = 0; /* Coexistence with fsck_lfs */ 97 98 char device[MAXPATHLEN]; 99 char *progname, *special; 100 101 static struct disklabel *getdisklabel(char *, int); 102 static struct disklabel *debug_readlabel(int); 103 #ifdef notdef 104 static void rewritelabel(char *, int, struct disklabel *); 105 #endif 106 static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *); 107 static void usage(void); 108 109 /* CHUNKSIZE should be larger than MAXPHYS */ 110 #define CHUNKSIZE (1024 * 1024) 111 112 static size_t 113 auto_segsize(int fd, off_t len, int version) 114 { 115 off_t off, bw; 116 time_t start, finish; 117 char buf[CHUNKSIZE]; 118 long seeks; 119 size_t final; 120 int i; 121 122 /* First, get sequential access bandwidth */ 123 time(&start); 124 finish = start; 125 for (off = 0; finish - start < 10; off += CHUNKSIZE) { 126 if (pread(fd, buf, CHUNKSIZE, off) < 0) 127 break; 128 time(&finish); 129 } 130 /* Bandwidth = bytes / sec */ 131 /* printf("%ld bytes in %ld seconds\n", (long)off, (long)(finish - start)); */ 132 bw = off / (finish - start); 133 134 /* Second, seek time */ 135 time(&start); 136 finish = start; /* structure copy */ 137 for (seeks = 0; finish - start < 10; ) { 138 off = (((double)rand()) * len) / (off_t)RAND_MAX; 139 if (pread(fd, buf, dbtob(1), off) < 0) 140 break; 141 time(&finish); 142 ++seeks; 143 } 144 /* printf("%ld seeks in %ld seconds\n", (long)seeks, (long)(finish - start)); */ 145 /* Seek time in units/sec */ 146 seeks /= (finish - start); 147 if (seeks == 0) 148 seeks = 1; 149 150 printf("bw = %ld B/s, seek time %ld ms (%ld seeks/s)\n", 151 (long)bw, 1000/seeks, seeks); 152 final = dbtob(btodb(4 * bw / seeks)); 153 if (version == 1) { 154 for (i = 0; final; final >>= 1, i++) 155 ; 156 final = 1 << i; 157 } 158 printf("using initial segment size %ld\n", (long)final); 159 return final; 160 } 161 162 int 163 main(int argc, char **argv) 164 { 165 int version, ch; 166 struct partition *pp; 167 struct disklabel *lp; 168 struct stat st; 169 int debug, force, fsi, fso, segsize, maxpartitions; 170 uint secsize = 0; 171 daddr_t start; 172 char *cp, *opstring; 173 int byte_sized = 0; 174 int r; 175 176 version = DFL_VERSION; /* what version of lfs to make */ 177 178 if ((progname = strrchr(*argv, '/')) != NULL) 179 ++progname; 180 else 181 progname = *argv; 182 183 maxpartitions = getmaxpartitions(); 184 if (maxpartitions > 26) 185 fatal("insane maxpartitions value %d", maxpartitions); 186 187 opstring = "AB:b:DFf:I:i:LM:m:NO:R:r:S:s:v:"; 188 189 debug = force = segsize = start = 0; 190 while ((ch = getopt(argc, argv, opstring)) != -1) 191 switch(ch) { 192 case 'A': /* Adaptively configure segment size */ 193 segsize = -1; 194 break; 195 case 'B': /* LFS segment size */ 196 segsize = strsuftoi64("segment size", optarg, LFS_MINSEGSIZE, INT64_MAX, NULL); 197 break; 198 case 'D': 199 debug = 1; 200 break; 201 case 'F': 202 force = 1; 203 break; 204 case 'I': 205 interleave = strsuftoi64("interleave", optarg, 0, INT64_MAX, NULL); 206 break; 207 case 'L': /* Compatibility only */ 208 break; 209 case 'M': 210 minfreeseg = strsuftoi64("minfreeseg", optarg, 0, INT64_MAX, NULL); 211 break; 212 case 'N': 213 Nflag++; 214 break; 215 case 'O': 216 start = strsuftoi64("start", optarg, 0, INT64_MAX, NULL); 217 break; 218 case 'R': 219 resvseg = strsuftoi64("resvseg", optarg, 0, INT64_MAX, NULL); 220 break; 221 case 'S': 222 secsize = strsuftoi64("sector size", optarg, 1, INT64_MAX, NULL); 223 if (secsize <= 0 || (secsize & (secsize - 1))) 224 fatal("%s: bad sector size", optarg); 225 break; 226 #ifdef COMPAT 227 case 'T': 228 disktype = optarg; 229 break; 230 #endif 231 case 'b': 232 bsize = strsuftoi64("block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 233 break; 234 case 'f': 235 fsize = strsuftoi64("fragment size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 236 break; 237 case 'i': 238 ibsize = strsuftoi64("inode block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 239 break; 240 case 'm': 241 minfree = strsuftoi64("free space %", optarg, 0, 99, NULL); 242 break; 243 case 'r': 244 roll_id = strsuftoi64("roll-forward id", optarg, 1, UINT_MAX, NULL); 245 break; 246 case 's': 247 fssize = strsuftoi64("file system size", optarg, 0, INT64_MAX, &byte_sized); 248 break; 249 case 'v': 250 version = strsuftoi64("file system version", optarg, 1, LFS_VERSION, NULL); 251 break; 252 case '?': 253 default: 254 usage(); 255 } 256 argc -= optind; 257 argv += optind; 258 259 if (argc != 2 && argc != 1) 260 usage(); 261 262 /* 263 * If the -N flag isn't specified, open the output file. If no path 264 * prefix, try /dev/r%s and then /dev/%s. 265 */ 266 special = argv[0]; 267 if (strchr(special, '/') == NULL) { 268 (void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV, 269 special); 270 if (stat(device, &st) == -1) 271 (void)snprintf(device, sizeof(device), "%s%s", 272 _PATH_DEV, special); 273 special = device; 274 } 275 if (!Nflag) { 276 fso = open(special, 277 (debug ? O_CREAT : 0) | O_RDWR, DEFFILEMODE); 278 if (fso < 0) 279 fatal("%s: %s", special, strerror(errno)); 280 } else 281 fso = -1; 282 283 /* Open the input file. */ 284 fsi = open(special, O_RDONLY); 285 if (fsi < 0) 286 fatal("%s: %s", special, strerror(errno)); 287 if (fstat(fsi, &st) < 0) 288 fatal("%s: %s", special, strerror(errno)); 289 290 291 if (!S_ISCHR(st.st_mode)) { 292 if (debug) { 293 lp = debug_readlabel(fsi); 294 pp = &lp->d_partitions[0]; 295 } else { 296 static struct partition dummy_pp; 297 lp = NULL; 298 pp = &dummy_pp; 299 pp->p_fstype = FS_BSDLFS; 300 if (secsize == 0) 301 secsize = 512; 302 pp->p_size = st.st_size / secsize; 303 } 304 } else { 305 cp = strchr(argv[0], '\0') - 1; 306 if (!debug 307 && ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 308 && !isdigit((unsigned char)*cp))) 309 fatal("%s: can't figure out file system partition", argv[0]); 310 311 #ifdef COMPAT 312 if (disktype == NULL) 313 disktype = argv[1]; 314 #endif 315 lp = getdisklabel(special, fsi); 316 317 if (isdigit((unsigned char)*cp)) 318 pp = &lp->d_partitions[0]; 319 else 320 pp = &lp->d_partitions[*cp - 'a']; 321 if (pp->p_size == 0) 322 fatal("%s: `%c' partition is unavailable", argv[0], *cp); 323 } 324 325 if (secsize == 0) 326 secsize = lp->d_secsize; 327 328 /* From here on out fssize is in sectors */ 329 if (byte_sized) { 330 fssize /= secsize; 331 } 332 333 /* If force, make the partition look like an LFS */ 334 if (force) { 335 pp->p_fstype = FS_BSDLFS; 336 pp->p_size = fssize; 337 /* 0 means to use defaults */ 338 pp->p_fsize = 0; 339 pp->p_frag = 0; 340 pp->p_sgs = 0; 341 } else 342 if (fssize != 0 && fssize < pp->p_size) 343 pp->p_size = fssize; 344 345 /* Try autoconfiguring segment size, if asked to */ 346 if (segsize == -1) { 347 if (!S_ISCHR(st.st_mode)) { 348 warnx("%s is not a character special device, ignoring -A", special); 349 segsize = 0; 350 } else 351 segsize = auto_segsize(fsi, dbtob(pp->p_size), version); 352 } 353 354 /* If we're making a LFS, we break out here */ 355 r = make_lfs(fso, secsize, pp, minfree, bsize, fsize, segsize, 356 minfreeseg, resvseg, version, start, ibsize, interleave, 357 roll_id); 358 if (debug) 359 bufstats(); 360 exit(r); 361 } 362 363 #ifdef COMPAT 364 char lmsg[] = "%s: can't read disk label; disk type must be specified"; 365 #else 366 char lmsg[] = "%s: can't read disk label"; 367 #endif 368 369 static struct disklabel * 370 getdisklabel(char *s, int fd) 371 { 372 static struct disklabel lab; 373 374 if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { 375 #ifdef COMPAT 376 if (disktype) { 377 struct disklabel *lp; 378 379 unlabeled++; 380 lp = getdiskbyname(disktype); 381 if (lp == NULL) 382 fatal("%s: unknown disk type", disktype); 383 return (lp); 384 } 385 #endif 386 (void)fprintf(stderr, 387 "%s: ioctl (GDINFO): %s\n", progname, strerror(errno)); 388 fatal(lmsg, s); 389 } 390 return (&lab); 391 } 392 393 394 static struct disklabel * 395 debug_readlabel(int fd) 396 { 397 static struct disklabel lab; 398 int n; 399 400 if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0) 401 fatal("unable to read disk label: %s", strerror(errno)); 402 else if (n < sizeof(struct disklabel)) 403 fatal("short read of disklabel: %d of %ld bytes", n, 404 (u_long) sizeof(struct disklabel)); 405 return(&lab); 406 } 407 408 #ifdef notdef 409 static void 410 rewritelabel(char *s, int fd, struct disklabel *lp) 411 { 412 #ifdef COMPAT 413 if (unlabeled) 414 return; 415 #endif 416 lp->d_checksum = 0; 417 lp->d_checksum = dkcksum(lp); 418 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 419 (void)fprintf(stderr, 420 "%s: ioctl (WDINFO): %s\n", progname, strerror(errno)); 421 fatal("%s: can't rewrite disk label", s); 422 } 423 #if __vax__ 424 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 425 int i; 426 int cfd; 427 daddr_t alt; 428 off_t loff; 429 char specname[64]; 430 char blk[1024]; 431 char *cp; 432 433 /* 434 * Make name for 'c' partition. 435 */ 436 strlcpy(specname, s, sizeof(specname)); 437 cp = specname + strlen(specname) - 1; 438 if (!isdigit(*cp)) 439 *cp = 'c'; 440 cfd = open(specname, O_WRONLY); 441 if (cfd < 0) 442 fatal("%s: %s", specname, strerror(errno)); 443 if ((loff = getlabeloffset()) < 0) 444 fatal("getlabeloffset: %s", strerror(errno)); 445 memset(blk, 0, sizeof(blk)); 446 *(struct disklabel *)(blk + loff) = *lp; 447 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 448 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 449 if (lseek(cfd, (off_t)((alt + i) * lp->d_secsize), 450 SEEK_SET) == -1) 451 fatal("lseek to badsector area: %s", 452 strerror(errno)); 453 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 454 fprintf(stderr, 455 "%s: alternate label %d write: %s\n", 456 progname, i/2, strerror(errno)); 457 } 458 close(cfd); 459 } 460 #endif /* vax */ 461 } 462 #endif /* notdef */ 463 464 static int64_t 465 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 466 { 467 int64_t result, r1; 468 int shift = 0; 469 char *ep; 470 471 errno = 0; 472 r1 = strtoll(arg, &ep, 10); 473 if (ep[0] != '\0' && ep[1] != '\0') 474 errx(1, "%s `%s' is not a valid number.", desc, arg); 475 switch (ep[0]) { 476 case '\0': 477 case 's': case 'S': 478 if (num_suffix != NULL) 479 *num_suffix = 0; 480 break; 481 case 'g': case 'G': 482 shift += 10; 483 /* FALLTHROUGH */ 484 case 'm': case 'M': 485 shift += 10; 486 /* FALLTHROUGH */ 487 case 'k': case 'K': 488 shift += 10; 489 /* FALLTHROUGH */ 490 case 'b': case 'B': 491 if (num_suffix != NULL) 492 *num_suffix = 1; 493 break; 494 default: 495 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 496 } 497 result = r1 << shift; 498 if (errno == ERANGE || result >> shift != r1) 499 errx(1, "%s `%s' is too large to convert.", desc, arg); 500 if (result < min) 501 errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").", 502 desc, arg, result, min); 503 if (result > max) 504 errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").", 505 desc, arg, result, max); 506 return result; 507 } 508 509 void 510 usage() 511 { 512 fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n"); 513 fprintf(stderr, "where fsoptions are:\n"); 514 fprintf(stderr, "\t-A (autoconfigure segment size)\n"); 515 fprintf(stderr, "\t-B segment size in bytes\n"); 516 fprintf(stderr, "\t-D (debug)\n"); 517 fprintf(stderr, "\t-M count of segments not counted in bfree\n"); 518 fprintf(stderr, 519 "\t-N (do not create file system, just print out parameters)\n"); 520 fprintf(stderr, "\t-O first segment offset in sectors\n"); 521 fprintf(stderr, "\t-R count of segments reserved for the cleaner\n"); 522 fprintf(stderr, "\t-b block size in bytes\n"); 523 fprintf(stderr, "\t-f frag size in bytes\n"); 524 fprintf(stderr, "\t-m minimum free space %%\n"); 525 fprintf(stderr, "\t-s file system size in sectors\n"); 526 fprintf(stderr, "\t-v version\n"); 527 exit(1); 528 } 529
Indexes created Wed Oct 22 13:09:56 GMT 2025