newfs.c revision 1.15.2.1
1 /* $NetBSD: newfs.c,v 1.15.2.1 2005/05/07 11:21:29 tron 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 1.15.2.1 2005/05/07 11:21:29 tron 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; /* free segments reserved for the cleaner */ 88 u_int32_t roll_id = 0; /* roll-forward id */ 89 u_long memleft; /* virtual memory available */ 90 caddr_t membase; /* start address of memory based filesystem */ 91 #ifdef COMPAT 92 char *disktype; 93 int unlabeled; 94 #endif 95 int preen = 0; /* Coexistence with fsck_lfs */ 96 97 char device[MAXPATHLEN]; 98 char *progname, *special; 99 100 static struct disklabel *getdisklabel(char *, int); 101 static struct disklabel *debug_readlabel(int); 102 #ifdef notdef 103 static void rewritelabel(char *, int, struct disklabel *); 104 #endif 105 static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *); 106 static void usage(void); 107 108 /* CHUNKSIZE should be larger than MAXPHYS */ 109 #define CHUNKSIZE (1024 * 1024) 110 111 static size_t 112 auto_segsize(int fd, off_t len, int version) 113 { 114 off_t off, bw; 115 time_t start, finish; 116 char buf[CHUNKSIZE]; 117 long seeks; 118 size_t final; 119 int i; 120 121 /* First, get sequential access bandwidth */ 122 time(&start); 123 finish = start; 124 for (off = 0; finish - start < 10; off += CHUNKSIZE) { 125 if (pread(fd, buf, CHUNKSIZE, off) < 0) 126 break; 127 time(&finish); 128 } 129 /* Bandwidth = bytes / sec */ 130 /* printf("%ld bytes in %ld seconds\n", (long)off, (long)(finish - start)); */ 131 bw = off / (finish - start); 132 133 /* Second, seek time */ 134 time(&start); 135 finish = start; /* structure copy */ 136 for (seeks = 0; finish - start < 10; ) { 137 off = (((double)rand()) * len) / (off_t)RAND_MAX; 138 if (pread(fd, buf, dbtob(1), off) < 0) 139 break; 140 time(&finish); 141 ++seeks; 142 } 143 /* printf("%ld seeks in %ld seconds\n", (long)seeks, (long)(finish - start)); */ 144 /* Seek time in units/sec */ 145 seeks /= (finish - start); 146 if (seeks == 0) 147 seeks = 1; 148 149 printf("bw = %ld B/s, seek time %ld ms (%ld seeks/s)\n", 150 (long)bw, 1000/seeks, seeks); 151 final = dbtob(btodb(4 * bw / seeks)); 152 if (version == 1) { 153 for (i = 0; final; final >>= 1, i++) 154 ; 155 final = 1 << i; 156 } 157 printf("using initial segment size %ld\n", (long)final); 158 return final; 159 } 160 161 int 162 main(int argc, char **argv) 163 { 164 int version, ch; 165 struct partition *pp; 166 struct disklabel *lp; 167 struct stat st; 168 int debug, force, fsi, fso, segsize, maxpartitions; 169 uint secsize = 0; 170 daddr_t start; 171 char *cp, *opstring; 172 int byte_sized = 0; 173 int r; 174 175 version = DFL_VERSION; /* what version of lfs to make */ 176 177 if ((progname = strrchr(*argv, '/')) != NULL) 178 ++progname; 179 else 180 progname = *argv; 181 182 maxpartitions = getmaxpartitions(); 183 if (maxpartitions > 26) 184 fatal("insane maxpartitions value %d", maxpartitions); 185 186 opstring = "AB:b:DFf:I:i:LM:m:NO:r:S:s:v:"; 187 188 debug = force = segsize = start = 0; 189 while ((ch = getopt(argc, argv, opstring)) != -1) 190 switch(ch) { 191 case 'A': /* Adaptively configure segment size */ 192 segsize = -1; 193 break; 194 case 'B': /* LFS segment size */ 195 segsize = strsuftoi64("segment size", optarg, LFS_MINSEGSIZE, INT64_MAX, NULL); 196 break; 197 case 'D': 198 debug = 1; 199 break; 200 case 'F': 201 force = 1; 202 break; 203 case 'I': 204 interleave = strsuftoi64("interleave", optarg, 0, INT64_MAX, NULL); 205 break; 206 case 'L': /* Compatibility only */ 207 break; 208 case 'M': 209 minfreeseg = strsuftoi64("minfreeseg", optarg, 0, INT64_MAX, NULL); 210 break; 211 case 'N': 212 Nflag++; 213 break; 214 case 'O': 215 start = strsuftoi64("start", optarg, 0, INT64_MAX, NULL); 216 break; 217 case 'S': 218 secsize = strsuftoi64("sector size", optarg, 1, INT64_MAX, NULL); 219 if (secsize <= 0 || (secsize & (secsize - 1))) 220 fatal("%s: bad sector size", optarg); 221 break; 222 #ifdef COMPAT 223 case 'T': 224 disktype = optarg; 225 break; 226 #endif 227 case 'b': 228 bsize = strsuftoi64("block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 229 break; 230 case 'f': 231 fsize = strsuftoi64("fragment size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 232 break; 233 case 'i': 234 ibsize = strsuftoi64("inode block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 235 break; 236 case 'm': 237 minfree = strsuftoi64("free space %", optarg, 0, 99, NULL); 238 break; 239 case 'r': 240 roll_id = strsuftoi64("roll-forward id", optarg, 1, UINT_MAX, NULL); 241 break; 242 case 's': 243 fssize = strsuftoi64("file system size", optarg, 0, INT64_MAX, &byte_sized); 244 break; 245 case 'v': 246 version = strsuftoi64("file system version", optarg, 1, LFS_VERSION, NULL); 247 break; 248 case '?': 249 default: 250 usage(); 251 } 252 argc -= optind; 253 argv += optind; 254 255 if (argc != 2 && argc != 1) 256 usage(); 257 258 /* 259 * If the -N flag isn't specified, open the output file. If no path 260 * prefix, try /dev/r%s and then /dev/%s. 261 */ 262 special = argv[0]; 263 if (strchr(special, '/') == NULL) { 264 (void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV, 265 special); 266 if (stat(device, &st) == -1) 267 (void)snprintf(device, sizeof(device), "%s%s", 268 _PATH_DEV, special); 269 special = device; 270 } 271 if (!Nflag) { 272 fso = open(special, 273 (debug ? O_CREAT : 0) | O_RDWR, DEFFILEMODE); 274 if (fso < 0) 275 fatal("%s: %s", special, strerror(errno)); 276 } else 277 fso = -1; 278 279 /* Open the input file. */ 280 fsi = open(special, O_RDONLY); 281 if (fsi < 0) 282 fatal("%s: %s", special, strerror(errno)); 283 if (fstat(fsi, &st) < 0) 284 fatal("%s: %s", special, strerror(errno)); 285 286 287 if (!S_ISCHR(st.st_mode)) { 288 if (debug) { 289 lp = debug_readlabel(fsi); 290 pp = &lp->d_partitions[0]; 291 } else { 292 static struct partition dummy_pp; 293 lp = NULL; 294 pp = &dummy_pp; 295 pp->p_fstype = FS_BSDLFS; 296 if (secsize == 0) 297 secsize = 512; 298 pp->p_size = st.st_size / secsize; 299 } 300 } else { 301 cp = strchr(argv[0], '\0') - 1; 302 if (!debug 303 && ((*cp < 'a' || *cp > ('a' + maxpartitions - 1)) 304 && !isdigit((unsigned char)*cp))) 305 fatal("%s: can't figure out file system partition", argv[0]); 306 307 #ifdef COMPAT 308 if (disktype == NULL) 309 disktype = argv[1]; 310 #endif 311 lp = getdisklabel(special, fsi); 312 313 if (isdigit((unsigned char)*cp)) 314 pp = &lp->d_partitions[0]; 315 else 316 pp = &lp->d_partitions[*cp - 'a']; 317 if (pp->p_size == 0) 318 fatal("%s: `%c' partition is unavailable", argv[0], *cp); 319 } 320 321 if (secsize == 0) 322 secsize = lp->d_secsize; 323 324 /* From here on out fssize is in sectors */ 325 if (byte_sized) { 326 fssize /= secsize; 327 } 328 329 /* If force, make the partition look like an LFS */ 330 if (force) { 331 pp->p_fstype = FS_BSDLFS; 332 pp->p_size = fssize; 333 /* 0 means to use defaults */ 334 pp->p_fsize = 0; 335 pp->p_frag = 0; 336 pp->p_sgs = 0; 337 } else 338 if (fssize != 0 && fssize < pp->p_size) 339 pp->p_size = fssize; 340 341 /* Try autoconfiguring segment size, if asked to */ 342 if (segsize == -1) { 343 if (!S_ISCHR(st.st_mode)) { 344 warnx("%s is not a character special device, ignoring -A", special); 345 segsize = 0; 346 } else 347 segsize = auto_segsize(fsi, dbtob(pp->p_size), version); 348 } 349 350 /* If we're making a LFS, we break out here */ 351 r = make_lfs(fso, secsize, pp, minfree, bsize, fsize, segsize, 352 minfreeseg, version, start, ibsize, interleave, 353 roll_id); 354 if (debug) 355 bufstats(); 356 exit(r); 357 } 358 359 #ifdef COMPAT 360 char lmsg[] = "%s: can't read disk label; disk type must be specified"; 361 #else 362 char lmsg[] = "%s: can't read disk label"; 363 #endif 364 365 static struct disklabel * 366 getdisklabel(char *s, int fd) 367 { 368 static struct disklabel lab; 369 370 if (ioctl(fd, DIOCGDINFO, (char *)&lab) < 0) { 371 #ifdef COMPAT 372 if (disktype) { 373 struct disklabel *lp; 374 375 unlabeled++; 376 lp = getdiskbyname(disktype); 377 if (lp == NULL) 378 fatal("%s: unknown disk type", disktype); 379 return (lp); 380 } 381 #endif 382 (void)fprintf(stderr, 383 "%s: ioctl (GDINFO): %s\n", progname, strerror(errno)); 384 fatal(lmsg, s); 385 } 386 return (&lab); 387 } 388 389 390 static struct disklabel * 391 debug_readlabel(int fd) 392 { 393 static struct disklabel lab; 394 int n; 395 396 if ((n = read(fd, &lab, sizeof(struct disklabel))) < 0) 397 fatal("unable to read disk label: %s", strerror(errno)); 398 else if (n < sizeof(struct disklabel)) 399 fatal("short read of disklabel: %d of %ld bytes", n, 400 (u_long) sizeof(struct disklabel)); 401 return(&lab); 402 } 403 404 #ifdef notdef 405 static void 406 rewritelabel(char *s, int fd, struct disklabel *lp) 407 { 408 #ifdef COMPAT 409 if (unlabeled) 410 return; 411 #endif 412 lp->d_checksum = 0; 413 lp->d_checksum = dkcksum(lp); 414 if (ioctl(fd, DIOCWDINFO, (char *)lp) < 0) { 415 (void)fprintf(stderr, 416 "%s: ioctl (WDINFO): %s\n", progname, strerror(errno)); 417 fatal("%s: can't rewrite disk label", s); 418 } 419 #if __vax__ 420 if (lp->d_type == DTYPE_SMD && lp->d_flags & D_BADSECT) { 421 int i; 422 int cfd; 423 daddr_t alt; 424 off_t loff; 425 char specname[64]; 426 char blk[1024]; 427 char *cp; 428 429 /* 430 * Make name for 'c' partition. 431 */ 432 strlcpy(specname, s, sizeof(specname)); 433 cp = specname + strlen(specname) - 1; 434 if (!isdigit(*cp)) 435 *cp = 'c'; 436 cfd = open(specname, O_WRONLY); 437 if (cfd < 0) 438 fatal("%s: %s", specname, strerror(errno)); 439 if ((loff = getlabeloffset()) < 0) 440 fatal("getlabeloffset: %s", strerror(errno)); 441 memset(blk, 0, sizeof(blk)); 442 *(struct disklabel *)(blk + loff) = *lp; 443 alt = lp->d_ncylinders * lp->d_secpercyl - lp->d_nsectors; 444 for (i = 1; i < 11 && i < lp->d_nsectors; i += 2) { 445 if (lseek(cfd, (off_t)((alt + i) * lp->d_secsize), 446 SEEK_SET) == -1) 447 fatal("lseek to badsector area: %s", 448 strerror(errno)); 449 if (write(cfd, blk, lp->d_secsize) < lp->d_secsize) 450 fprintf(stderr, 451 "%s: alternate label %d write: %s\n", 452 progname, i/2, strerror(errno)); 453 } 454 close(cfd); 455 } 456 #endif /* vax */ 457 } 458 #endif /* notdef */ 459 460 static int64_t 461 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 462 { 463 int64_t result, r1; 464 int shift = 0; 465 char *ep; 466 467 errno = 0; 468 r1 = strtoll(arg, &ep, 10); 469 if (ep[0] != '\0' && ep[1] != '\0') 470 errx(1, "%s `%s' is not a valid number.", desc, arg); 471 switch (ep[0]) { 472 case '\0': 473 case 's': case 'S': 474 if (num_suffix != NULL) 475 *num_suffix = 0; 476 break; 477 case 'g': case 'G': 478 shift += 10; 479 /* FALLTHROUGH */ 480 case 'm': case 'M': 481 shift += 10; 482 /* FALLTHROUGH */ 483 case 'k': case 'K': 484 shift += 10; 485 /* FALLTHROUGH */ 486 case 'b': case 'B': 487 if (num_suffix != NULL) 488 *num_suffix = 1; 489 break; 490 default: 491 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 492 } 493 result = r1 << shift; 494 if (errno == ERANGE || result >> shift != r1) 495 errx(1, "%s `%s' is too large to convert.", desc, arg); 496 if (result < min) 497 errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").", 498 desc, arg, result, min); 499 if (result > max) 500 errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").", 501 desc, arg, result, max); 502 return result; 503 } 504 505 void 506 usage() 507 { 508 fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n"); 509 fprintf(stderr, "where fsoptions are:\n"); 510 fprintf(stderr, "\t-A (autoconfigure segment size)\n"); 511 fprintf(stderr, "\t-B segment size in bytes\n"); 512 fprintf(stderr, "\t-D (debug)\n"); 513 fprintf(stderr, 514 "\t-N (do not create file system, just print out parameters)\n"); 515 fprintf(stderr, "\t-O first segment offset in sectors\n"); 516 fprintf(stderr, "\t-b block size in bytes\n"); 517 fprintf(stderr, "\t-f frag size in bytes\n"); 518 fprintf(stderr, "\t-m minimum free space %%\n"); 519 fprintf(stderr, "\t-s file system size in sectors\n"); 520 fprintf(stderr, "\t-v version\n"); 521 exit(1); 522 } 523
Indexes created Wed Oct 22 06:10:02 GMT 2025