newfs.c revision 1.25.6.1
1 /* $NetBSD: newfs.c,v 1.25.6.1 2012/04/17 00:05:41 yamt 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\ 35 The Regents of the University of California. All rights reserved."); 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 1.25.6.1 2012/04/17 00:05:41 yamt 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/file.h> 54 #include <sys/mount.h> 55 #include <sys/sysctl.h> 56 #include <sys/time.h> 57 #include <sys/disk.h> 58 59 #include <ufs/ufs/dir.h> 60 #include <ufs/ufs/dinode.h> 61 #include <ufs/lfs/lfs.h> 62 63 #include <err.h> 64 #include <errno.h> 65 #include <unistd.h> 66 #include <stdio.h> 67 #include <stdlib.h> 68 #include <ctype.h> 69 #include <string.h> 70 #include <paths.h> 71 #include <util.h> 72 #include "config.h" 73 #include "extern.h" 74 #include "bufcache.h" 75 #include "partutil.h" 76 77 #define COMPAT /* allow non-labeled disks */ 78 79 #ifdef COMPAT 80 const char lmsg[] = "%s: can't read disk label; disk type must be specified"; 81 #else 82 const char lmsg[] = "%s: can't read disk label"; 83 #endif 84 85 int Nflag = 0; /* run without writing file system */ 86 int fssize; /* file system size */ 87 int sectorsize; /* bytes/sector */ 88 int fsize = 0; /* fragment size */ 89 int bsize = 0; /* block size */ 90 int ibsize = 0; /* inode block size */ 91 int interleave = 0; /* segment interleave */ 92 int minfree = MINFREE; /* free space threshold */ 93 int minfreeseg = 0; /* segments not counted in bfree total */ 94 int resvseg = 0; /* free segments reserved for the cleaner */ 95 u_int32_t roll_id = 0; /* roll-forward id */ 96 u_long memleft; /* virtual memory available */ 97 caddr_t membase; /* start address of memory based filesystem */ 98 #ifdef COMPAT 99 char *disktype; 100 #endif 101 int preen = 0; /* Coexistence with fsck_lfs */ 102 103 char device[MAXPATHLEN]; 104 char *progname, *special; 105 106 extern long dev_bsize; /* device block size */ 107 108 static int64_t strsuftoi64(const char *, const char *, int64_t, int64_t, int *); 109 static void usage(void); 110 111 /* CHUNKSIZE should be larger than MAXPHYS */ 112 #define CHUNKSIZE (1024 * 1024) 113 114 static size_t 115 auto_segsize(int fd, off_t len, int version) 116 { 117 off_t off, bw; 118 time_t start, finish; 119 char buf[CHUNKSIZE]; 120 long seeks; 121 size_t final; 122 int i; 123 124 /* First, get sequential access bandwidth */ 125 time(&start); 126 finish = start; 127 for (off = 0; finish - start < 10; off += CHUNKSIZE) { 128 if (pread(fd, buf, CHUNKSIZE, off) < 0) 129 break; 130 time(&finish); 131 } 132 /* Bandwidth = bytes / sec */ 133 /* printf("%ld bytes in %ld seconds\n", (long)off, (long)(finish - start)); */ 134 bw = off / (finish - start); 135 136 /* Second, seek time */ 137 time(&start); 138 finish = start; /* structure copy */ 139 for (seeks = 0; finish - start < 10; ) { 140 off = (((double)rand()) * (btodb(len))) / ((off_t)RAND_MAX + 1); 141 if (pread(fd, buf, dbtob(1), dbtob(off)) < 0) 142 err(1, "pread"); 143 time(&finish); 144 ++seeks; 145 } 146 /* printf("%ld seeks in %ld seconds\n", (long)seeks, (long)(finish - start)); */ 147 /* Seek time in units/sec */ 148 seeks /= (finish - start); 149 if (seeks == 0) 150 seeks = 1; 151 152 printf("bw = %ld B/s, seek time %ld ms (%ld seeks/s)\n", 153 (long)bw, 1000/seeks, seeks); 154 final = dbtob(btodb(4 * bw / seeks)); 155 if (version == 1) { 156 for (i = 0; final; final >>= 1, i++) 157 ; 158 final = 1 << i; 159 } 160 printf("using initial segment size %ld\n", (long)final); 161 return final; 162 } 163 164 int 165 main(int argc, char **argv) 166 { 167 int version, ch; 168 struct disk_geom geo; 169 struct dkwedge_info dkw; 170 struct stat st; 171 int debug, force, fsi, fso, segsize, maxpartitions; 172 uint secsize = 0; 173 daddr_t start; 174 const char *opstring; 175 int byte_sized = 0; 176 int r; 177 178 version = DFL_VERSION; /* what version of lfs to make */ 179 180 if ((progname = strrchr(*argv, '/')) != NULL) 181 ++progname; 182 else 183 progname = *argv; 184 185 maxpartitions = getmaxpartitions(); 186 if (maxpartitions > 26) 187 fatal("insane maxpartitions value %d", maxpartitions); 188 189 opstring = "AB:b:DFf:I:i:LM:m:NO:R:r:S:s:v:"; 190 191 debug = force = segsize = start = 0; 192 while ((ch = getopt(argc, argv, opstring)) != -1) 193 switch(ch) { 194 case 'A': /* Adaptively configure segment size */ 195 segsize = -1; 196 break; 197 case 'B': /* LFS segment size */ 198 segsize = strsuftoi64("segment size", optarg, LFS_MINSEGSIZE, INT64_MAX, NULL); 199 break; 200 case 'D': 201 debug = 1; 202 break; 203 case 'F': 204 force = 1; 205 break; 206 case 'I': 207 interleave = strsuftoi64("interleave", optarg, 0, INT64_MAX, NULL); 208 break; 209 case 'L': /* Compatibility only */ 210 break; 211 case 'M': 212 minfreeseg = strsuftoi64("minfreeseg", optarg, 0, INT64_MAX, NULL); 213 break; 214 case 'N': 215 Nflag++; 216 break; 217 case 'O': 218 start = strsuftoi64("start", optarg, 0, INT64_MAX, NULL); 219 break; 220 case 'R': 221 resvseg = strsuftoi64("resvseg", optarg, 0, INT64_MAX, NULL); 222 break; 223 case 'S': 224 secsize = strsuftoi64("sector size", optarg, 1, INT64_MAX, NULL); 225 if (secsize <= 0 || (secsize & (secsize - 1))) 226 fatal("%s: bad sector size", optarg); 227 break; 228 #ifdef COMPAT 229 case 'T': 230 disktype = optarg; 231 break; 232 #endif 233 case 'b': 234 bsize = strsuftoi64("block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 235 break; 236 case 'f': 237 fsize = strsuftoi64("fragment size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 238 break; 239 case 'i': 240 ibsize = strsuftoi64("inode block size", optarg, LFS_MINBLOCKSIZE, INT64_MAX, NULL); 241 break; 242 case 'm': 243 minfree = strsuftoi64("free space %", optarg, 0, 99, NULL); 244 break; 245 case 'r': 246 roll_id = strsuftoi64("roll-forward id", optarg, 1, UINT_MAX, NULL); 247 break; 248 case 's': 249 fssize = strsuftoi64("file system size", optarg, 0, INT64_MAX, &byte_sized); 250 break; 251 case 'v': 252 version = strsuftoi64("file system version", optarg, 1, LFS_VERSION, NULL); 253 break; 254 case '?': 255 default: 256 usage(); 257 } 258 argc -= optind; 259 argv += optind; 260 261 if (argc != 2 && argc != 1) 262 usage(); 263 264 /* 265 * If the -N flag isn't specified, open the output file. If no path 266 * prefix, try /dev/r%s and then /dev/%s. 267 */ 268 special = argv[0]; 269 if (strchr(special, '/') == NULL) { 270 (void)snprintf(device, sizeof(device), "%sr%s", _PATH_DEV, 271 special); 272 if (stat(device, &st) == -1) 273 (void)snprintf(device, sizeof(device), "%s%s", 274 _PATH_DEV, special); 275 special = device; 276 } 277 if (!Nflag) { 278 fso = open(special, O_RDWR, DEFFILEMODE); 279 if (debug && fso < 0) { 280 /* Create a file of the requested size. */ 281 fso = open(special, O_CREAT | O_RDWR, DEFFILEMODE); 282 if (fso >= 0) { 283 char buf[512]; 284 int i; 285 for (i = 0; i < fssize; i++) 286 write(fso, buf, sizeof(buf)); 287 lseek(fso, 0, SEEK_SET); 288 } 289 } 290 if (fso < 0) 291 fatal("%s: %s", special, strerror(errno)); 292 } else 293 fso = -1; 294 295 /* Open the input file. */ 296 fsi = open(special, O_RDONLY); 297 if (fsi < 0) 298 fatal("%s: %s", special, strerror(errno)); 299 if (fstat(fsi, &st) < 0) 300 fatal("%s: %s", special, strerror(errno)); 301 302 303 if (!S_ISCHR(st.st_mode)) { 304 if (!S_ISREG(st.st_mode)) { 305 fatal("%s: neither a character special device " 306 "nor a regular file", special); 307 } 308 (void)strcpy(dkw.dkw_ptype, DKW_PTYPE_LFS); 309 if (secsize == 0) 310 secsize = 512; 311 dkw.dkw_size = st.st_size / secsize; 312 } else { 313 #ifdef COMPAT 314 if (disktype == NULL) 315 disktype = argv[1]; 316 #endif 317 if (getdiskinfo(special, fsi, disktype, &geo, &dkw) == -1) 318 errx(1, lmsg, special); 319 320 if (dkw.dkw_size == 0) 321 fatal("%s: is zero sized", argv[0]); 322 if (!force && strcmp(dkw.dkw_ptype, DKW_PTYPE_LFS) != 0) 323 fatal("%s: is not `%s', but `%s'", argv[0], 324 DKW_PTYPE_LFS, dkw.dkw_ptype); 325 } 326 327 if (secsize == 0) 328 secsize = geo.dg_secsize; 329 330 /* Make device block size available to low level routines */ 331 dev_bsize = secsize; 332 333 /* From here on out fssize is in sectors */ 334 if (byte_sized) { 335 fssize /= secsize; 336 } 337 338 /* If force, make the partition look like an LFS */ 339 if (force) { 340 (void)strcpy(dkw.dkw_ptype, DKW_PTYPE_LFS); 341 if (fssize) { 342 dkw.dkw_size = fssize; 343 } 344 } else 345 if (fssize != 0 && fssize < dkw.dkw_size) 346 dkw.dkw_size = fssize; 347 348 /* Try autoconfiguring segment size, if asked to */ 349 if (segsize == -1) { 350 if (!S_ISCHR(st.st_mode)) { 351 warnx("%s is not a character special device, ignoring -A", special); 352 segsize = 0; 353 } else 354 segsize = auto_segsize(fsi, dkw.dkw_size / secsize, 355 version); 356 } 357 358 /* If we're making a LFS, we break out here */ 359 r = make_lfs(fso, secsize, &dkw, minfree, bsize, fsize, segsize, 360 minfreeseg, resvseg, version, start, ibsize, interleave, roll_id); 361 if (debug) 362 bufstats(); 363 exit(r); 364 } 365 366 static int64_t 367 strsuftoi64(const char *desc, const char *arg, int64_t min, int64_t max, int *num_suffix) 368 { 369 int64_t result, r1; 370 int shift = 0; 371 char *ep; 372 373 errno = 0; 374 r1 = strtoll(arg, &ep, 10); 375 if (ep[0] != '\0' && ep[1] != '\0') 376 errx(1, "%s `%s' is not a valid number.", desc, arg); 377 switch (ep[0]) { 378 case '\0': 379 case 's': case 'S': 380 if (num_suffix != NULL) 381 *num_suffix = 0; 382 break; 383 case 'g': case 'G': 384 shift += 10; 385 /* FALLTHROUGH */ 386 case 'm': case 'M': 387 shift += 10; 388 /* FALLTHROUGH */ 389 case 'k': case 'K': 390 shift += 10; 391 /* FALLTHROUGH */ 392 case 'b': case 'B': 393 if (num_suffix != NULL) 394 *num_suffix = 1; 395 break; 396 default: 397 errx(1, "`%s' is not a valid suffix for %s.", ep, desc); 398 } 399 result = r1 << shift; 400 if (errno == ERANGE || result >> shift != r1) 401 errx(1, "%s `%s' is too large to convert.", desc, arg); 402 if (result < min) 403 errx(1, "%s `%s' (%" PRId64 ") is less than the minimum (%" PRId64 ").", 404 desc, arg, result, min); 405 if (result > max) 406 errx(1, "%s `%s' (%" PRId64 ") is greater than the maximum (%" PRId64 ").", 407 desc, arg, result, max); 408 return result; 409 } 410 411 void 412 usage() 413 { 414 fprintf(stderr, "usage: newfs_lfs [ -fsoptions ] special-device\n"); 415 fprintf(stderr, "where fsoptions are:\n"); 416 fprintf(stderr, "\t-A (autoconfigure segment size)\n"); 417 fprintf(stderr, "\t-B segment size in bytes\n"); 418 fprintf(stderr, "\t-D (debug)\n"); 419 fprintf(stderr, "\t-M count of segments not counted in bfree\n"); 420 fprintf(stderr, 421 "\t-N (do not create file system, just print out parameters)\n"); 422 fprintf(stderr, "\t-O first segment offset in sectors\n"); 423 fprintf(stderr, "\t-R count of segments reserved for the cleaner\n"); 424 fprintf(stderr, "\t-b block size in bytes\n"); 425 fprintf(stderr, "\t-f frag size in bytes\n"); 426 fprintf(stderr, "\t-m minimum free space %%\n"); 427 fprintf(stderr, "\t-s file system size in sectors\n"); 428 fprintf(stderr, "\t-v version\n"); 429 exit(1); 430 } 431
Indexes created Sat Oct 25 07:10:08 GMT 2025