newfs.c revision 320365
1/* 2 * Copyright (c) 2002 Networks Associates Technology, Inc. 3 * All rights reserved. 4 * 5 * This software was developed for the FreeBSD Project by Marshall 6 * Kirk McKusick and Network Associates Laboratories, the Security 7 * Research Division of Network Associates, Inc. under DARPA/SPAWAR 8 * contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA CHATS 9 * research program. 10 * 11 * Copyright (c) 1983, 1989, 1993, 1994 12 * The Regents of the University of California. All rights reserved. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions 16 * are met: 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 2. Redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39#if 0 40#ifndef lint 41static const char copyright[] = 42"@(#) Copyright (c) 1983, 1989, 1993, 1994\n\ 43 The Regents of the University of California. All rights reserved.\n"; 44#endif /* not lint */ 45 46#ifndef lint 47static char sccsid[] = "@(#)newfs.c 8.13 (Berkeley) 5/1/95"; 48#endif /* not lint */ 49#endif 50#include <sys/cdefs.h> 51__FBSDID("$FreeBSD: stable/11/sbin/newfs/newfs.c 320365 2017-06-26 17:29:32Z mckusick $"); 52 53/* 54 * newfs: friendly front end to mkfs 55 */ 56#include <sys/param.h> 57#include <sys/stat.h> 58#include <sys/disk.h> 59#include <sys/disklabel.h> 60#include <sys/file.h> 61#include <sys/mount.h> 62 63#include <ufs/ufs/dir.h> 64#include <ufs/ufs/dinode.h> 65#include <ufs/ffs/fs.h> 66#include <ufs/ufs/ufsmount.h> 67 68#include <ctype.h> 69#include <err.h> 70#include <errno.h> 71#include <inttypes.h> 72#include <paths.h> 73#include <stdarg.h> 74#include <stdio.h> 75#include <stdlib.h> 76#include <string.h> 77#include <syslog.h> 78#include <unistd.h> 79 80#include <libutil.h> 81 82#include "newfs.h" 83 84int Eflag; /* Erase previous disk contents */ 85int Lflag; /* add a volume label */ 86int Nflag; /* run without writing file system */ 87int Oflag = 2; /* file system format (1 => UFS1, 2 => UFS2) */ 88int Rflag; /* regression test */ 89int Uflag; /* enable soft updates for file system */ 90int jflag; /* enable soft updates journaling for filesys */ 91int Xflag = 0; /* exit in middle of newfs for testing */ 92int Jflag; /* enable gjournal for file system */ 93int lflag; /* enable multilabel for file system */ 94int nflag; /* do not create .snap directory */ 95int tflag; /* enable TRIM */ 96intmax_t fssize; /* file system size */ 97off_t mediasize; /* device size */ 98int sectorsize; /* bytes/sector */ 99int realsectorsize; /* bytes/sector in hardware */ 100int fsize = 0; /* fragment size */ 101int bsize = 0; /* block size */ 102int maxbsize = 0; /* maximum clustering */ 103int maxblkspercg = MAXBLKSPERCG; /* maximum blocks per cylinder group */ 104int minfree = MINFREE; /* free space threshold */ 105int metaspace; /* space held for metadata blocks */ 106int opt = DEFAULTOPT; /* optimization preference (space or time) */ 107int density; /* number of bytes per inode */ 108int maxcontig = 0; /* max contiguous blocks to allocate */ 109int maxbpg; /* maximum blocks per file in a cyl group */ 110int avgfilesize = AVFILESIZ;/* expected average file size */ 111int avgfilesperdir = AFPDIR;/* expected number of files per directory */ 112u_char *volumelabel = NULL; /* volume label for filesystem */ 113struct uufsd disk; /* libufs disk structure */ 114 115static char device[MAXPATHLEN]; 116static u_char bootarea[BBSIZE]; 117static int is_file; /* work on a file, not a device */ 118static char *dkname; 119static char *disktype; 120 121static void getfssize(intmax_t *, const char *p, intmax_t, intmax_t); 122static struct disklabel *getdisklabel(char *s); 123static void usage(void); 124static int expand_number_int(const char *buf, int *num); 125 126ufs2_daddr_t part_ofs; /* partition offset in blocks, used with files */ 127 128int 129main(int argc, char *argv[]) 130{ 131 struct partition *pp; 132 struct disklabel *lp; 133 struct stat st; 134 char *cp, *special; 135 intmax_t reserved; 136 int ch, i, rval; 137 char part_name; /* partition name, default to full disk */ 138 139 part_name = 'c'; 140 reserved = 0; 141 while ((ch = getopt(argc, argv, 142 "EJL:NO:RS:T:UXa:b:c:d:e:f:g:h:i:jk:lm:no:p:r:s:t")) != -1) 143 switch (ch) { 144 case 'E': 145 Eflag = 1; 146 break; 147 case 'J': 148 Jflag = 1; 149 break; 150 case 'L': 151 volumelabel = optarg; 152 i = -1; 153 while (isalnum(volumelabel[++i]) || 154 volumelabel[i] == '_'); 155 if (volumelabel[i] != '\0') { 156 errx(1, "bad volume label. Valid characters are alphanumerics."); 157 } 158 if (strlen(volumelabel) >= MAXVOLLEN) { 159 errx(1, "bad volume label. Length is longer than %d.", 160 MAXVOLLEN); 161 } 162 Lflag = 1; 163 break; 164 case 'N': 165 Nflag = 1; 166 break; 167 case 'O': 168 if ((Oflag = atoi(optarg)) < 1 || Oflag > 2) 169 errx(1, "%s: bad file system format value", 170 optarg); 171 break; 172 case 'R': 173 Rflag = 1; 174 break; 175 case 'S': 176 rval = expand_number_int(optarg, §orsize); 177 if (rval < 0 || sectorsize <= 0) 178 errx(1, "%s: bad sector size", optarg); 179 break; 180 case 'T': 181 disktype = optarg; 182 break; 183 case 'j': 184 jflag = 1; 185 /* fall through to enable soft updates */ 186 case 'U': 187 Uflag = 1; 188 break; 189 case 'X': 190 Xflag++; 191 break; 192 case 'a': 193 rval = expand_number_int(optarg, &maxcontig); 194 if (rval < 0 || maxcontig <= 0) 195 errx(1, "%s: bad maximum contiguous blocks", 196 optarg); 197 break; 198 case 'b': 199 rval = expand_number_int(optarg, &bsize); 200 if (rval < 0) 201 errx(1, "%s: bad block size", 202 optarg); 203 if (bsize < MINBSIZE) 204 errx(1, "%s: block size too small, min is %d", 205 optarg, MINBSIZE); 206 if (bsize > MAXBSIZE) 207 errx(1, "%s: block size too large, max is %d", 208 optarg, MAXBSIZE); 209 break; 210 case 'c': 211 rval = expand_number_int(optarg, &maxblkspercg); 212 if (rval < 0 || maxblkspercg <= 0) 213 errx(1, "%s: bad blocks per cylinder group", 214 optarg); 215 break; 216 case 'd': 217 rval = expand_number_int(optarg, &maxbsize); 218 if (rval < 0 || maxbsize < MINBSIZE) 219 errx(1, "%s: bad extent block size", optarg); 220 break; 221 case 'e': 222 rval = expand_number_int(optarg, &maxbpg); 223 if (rval < 0 || maxbpg <= 0) 224 errx(1, "%s: bad blocks per file in a cylinder group", 225 optarg); 226 break; 227 case 'f': 228 rval = expand_number_int(optarg, &fsize); 229 if (rval < 0 || fsize <= 0) 230 errx(1, "%s: bad fragment size", optarg); 231 break; 232 case 'g': 233 rval = expand_number_int(optarg, &avgfilesize); 234 if (rval < 0 || avgfilesize <= 0) 235 errx(1, "%s: bad average file size", optarg); 236 break; 237 case 'h': 238 rval = expand_number_int(optarg, &avgfilesperdir); 239 if (rval < 0 || avgfilesperdir <= 0) 240 errx(1, "%s: bad average files per dir", optarg); 241 break; 242 case 'i': 243 rval = expand_number_int(optarg, &density); 244 if (rval < 0 || density <= 0) 245 errx(1, "%s: bad bytes per inode", optarg); 246 break; 247 case 'l': 248 lflag = 1; 249 break; 250 case 'k': 251 if ((metaspace = atoi(optarg)) < 0) 252 errx(1, "%s: bad metadata space %%", optarg); 253 if (metaspace == 0) 254 /* force to stay zero in mkfs */ 255 metaspace = -1; 256 break; 257 case 'm': 258 if ((minfree = atoi(optarg)) < 0 || minfree > 99) 259 errx(1, "%s: bad free space %%", optarg); 260 break; 261 case 'n': 262 nflag = 1; 263 break; 264 case 'o': 265 if (strcmp(optarg, "space") == 0) 266 opt = FS_OPTSPACE; 267 else if (strcmp(optarg, "time") == 0) 268 opt = FS_OPTTIME; 269 else 270 errx(1, 271 "%s: unknown optimization preference: use `space' or `time'", 272 optarg); 273 break; 274 case 'r': 275 errno = 0; 276 reserved = strtoimax(optarg, &cp, 0); 277 if (errno != 0 || cp == optarg || 278 *cp != '\0' || reserved < 0) 279 errx(1, "%s: bad reserved size", optarg); 280 break; 281 case 'p': 282 is_file = 1; 283 part_name = optarg[0]; 284 break; 285 286 case 's': 287 errno = 0; 288 fssize = strtoimax(optarg, &cp, 0); 289 if (errno != 0 || cp == optarg || 290 *cp != '\0' || fssize < 0) 291 errx(1, "%s: bad file system size", optarg); 292 break; 293 case 't': 294 tflag = 1; 295 break; 296 case '?': 297 default: 298 usage(); 299 } 300 argc -= optind; 301 argv += optind; 302 303 if (argc != 1) 304 usage(); 305 306 special = argv[0]; 307 if (!special[0]) 308 err(1, "empty file/special name"); 309 cp = strrchr(special, '/'); 310 if (cp == NULL) { 311 /* 312 * No path prefix; try prefixing _PATH_DEV. 313 */ 314 snprintf(device, sizeof(device), "%s%s", _PATH_DEV, special); 315 special = device; 316 } 317 318 if (is_file) { 319 /* bypass ufs_disk_fillout_blank */ 320 bzero( &disk, sizeof(disk)); 321 disk.d_bsize = 1; 322 disk.d_name = special; 323 disk.d_fd = open(special, O_RDONLY); 324 if (disk.d_fd < 0 || 325 (!Nflag && ufs_disk_write(&disk) == -1)) 326 errx(1, "%s: ", special); 327 } else if (ufs_disk_fillout_blank(&disk, special) == -1 || 328 (!Nflag && ufs_disk_write(&disk) == -1)) { 329 if (disk.d_error != NULL) 330 errx(1, "%s: %s", special, disk.d_error); 331 else 332 err(1, "%s", special); 333 } 334 if (fstat(disk.d_fd, &st) < 0) 335 err(1, "%s", special); 336 if ((st.st_mode & S_IFMT) != S_IFCHR) { 337 warn("%s: not a character-special device", special); 338 is_file = 1; /* assume it is a file */ 339 dkname = special; 340 if (sectorsize == 0) 341 sectorsize = 512; 342 mediasize = st.st_size; 343 /* set fssize from the partition */ 344 } else { 345 if (sectorsize == 0) 346 if (ioctl(disk.d_fd, DIOCGSECTORSIZE, §orsize) == -1) 347 sectorsize = 0; /* back out on error for safety */ 348 if (sectorsize && ioctl(disk.d_fd, DIOCGMEDIASIZE, &mediasize) != -1) 349 getfssize(&fssize, special, mediasize / sectorsize, reserved); 350 } 351 pp = NULL; 352 lp = getdisklabel(special); 353 if (lp != NULL) { 354 if (!is_file) /* already set for files */ 355 part_name = special[strlen(special) - 1]; 356 if ((part_name < 'a' || part_name - 'a' >= MAXPARTITIONS) && 357 !isdigit(part_name)) 358 errx(1, "%s: can't figure out file system partition", 359 special); 360 cp = &part_name; 361 if (isdigit(*cp)) 362 pp = &lp->d_partitions[RAW_PART]; 363 else 364 pp = &lp->d_partitions[*cp - 'a']; 365 if (pp->p_size == 0) 366 errx(1, "%s: `%c' partition is unavailable", 367 special, *cp); 368 if (pp->p_fstype == FS_BOOT) 369 errx(1, "%s: `%c' partition overlaps boot program", 370 special, *cp); 371 getfssize(&fssize, special, pp->p_size, reserved); 372 if (sectorsize == 0) 373 sectorsize = lp->d_secsize; 374 if (fsize == 0) 375 fsize = pp->p_fsize; 376 if (bsize == 0) 377 bsize = pp->p_frag * pp->p_fsize; 378 if (is_file) 379 part_ofs = pp->p_offset; 380 } 381 if (sectorsize <= 0) 382 errx(1, "%s: no default sector size", special); 383 if (fsize <= 0) 384 fsize = MAX(DFL_FRAGSIZE, sectorsize); 385 if (bsize <= 0) 386 bsize = MIN(DFL_BLKSIZE, 8 * fsize); 387 if (minfree < MINFREE && opt != FS_OPTSPACE) { 388 fprintf(stderr, "Warning: changing optimization to space "); 389 fprintf(stderr, "because minfree is less than %d%%\n", MINFREE); 390 opt = FS_OPTSPACE; 391 } 392 realsectorsize = sectorsize; 393 if (sectorsize != DEV_BSIZE) { /* XXX */ 394 int secperblk = sectorsize / DEV_BSIZE; 395 396 sectorsize = DEV_BSIZE; 397 fssize *= secperblk; 398 if (pp != NULL) 399 pp->p_size *= secperblk; 400 } 401 mkfs(pp, special); 402 ufs_disk_close(&disk); 403 if (!jflag) 404 exit(0); 405 if (execlp("tunefs", "newfs", "-j", "enable", special, NULL) < 0) 406 err(1, "Cannot enable soft updates journaling, tunefs"); 407 /* NOT REACHED */ 408} 409 410void 411getfssize(intmax_t *fsz, const char *s, intmax_t disksize, intmax_t reserved) 412{ 413 intmax_t available; 414 415 available = disksize - reserved; 416 if (available <= 0) 417 errx(1, "%s: reserved not less than device size %jd", 418 s, disksize); 419 if (*fsz == 0) 420 *fsz = available; 421 else if (*fsz > available) 422 errx(1, "%s: maximum file system size is %jd", 423 s, available); 424} 425 426struct disklabel * 427getdisklabel(char *s) 428{ 429 static struct disklabel lab; 430 struct disklabel *lp; 431 432 if (is_file) { 433 if (read(disk.d_fd, bootarea, BBSIZE) != BBSIZE) 434 err(4, "cannot read bootarea"); 435 if (bsd_disklabel_le_dec( 436 bootarea + (0 /* labeloffset */ + 437 1 /* labelsoffset */ * sectorsize), 438 &lab, MAXPARTITIONS)) 439 errx(1, "no valid label found"); 440 441 lp = &lab; 442 return &lab; 443 } 444 445 if (disktype) { 446 lp = getdiskbyname(disktype); 447 if (lp != NULL) 448 return (lp); 449 } 450 return (NULL); 451} 452 453static void 454usage() 455{ 456 fprintf(stderr, 457 "usage: %s [ -fsoptions ] special-device%s\n", 458 getprogname(), 459 " [device-type]"); 460 fprintf(stderr, "where fsoptions are:\n"); 461 fprintf(stderr, "\t-E Erase previous disk content\n"); 462 fprintf(stderr, "\t-J Enable journaling via gjournal\n"); 463 fprintf(stderr, "\t-L volume label to add to superblock\n"); 464 fprintf(stderr, 465 "\t-N do not create file system, just print out parameters\n"); 466 fprintf(stderr, "\t-O file system format: 1 => UFS1, 2 => UFS2\n"); 467 fprintf(stderr, "\t-R regression test, suppress random factors\n"); 468 fprintf(stderr, "\t-S sector size\n"); 469 fprintf(stderr, "\t-T disktype\n"); 470 fprintf(stderr, "\t-U enable soft updates\n"); 471 fprintf(stderr, "\t-a maximum contiguous blocks\n"); 472 fprintf(stderr, "\t-b block size\n"); 473 fprintf(stderr, "\t-c blocks per cylinders group\n"); 474 fprintf(stderr, "\t-d maximum extent size\n"); 475 fprintf(stderr, "\t-e maximum blocks per file in a cylinder group\n"); 476 fprintf(stderr, "\t-f frag size\n"); 477 fprintf(stderr, "\t-g average file size\n"); 478 fprintf(stderr, "\t-h average files per directory\n"); 479 fprintf(stderr, "\t-i number of bytes per inode\n"); 480 fprintf(stderr, "\t-j enable soft updates journaling\n"); 481 fprintf(stderr, "\t-k space to hold for metadata blocks\n"); 482 fprintf(stderr, "\t-l enable multilabel MAC\n"); 483 fprintf(stderr, "\t-n do not create .snap directory\n"); 484 fprintf(stderr, "\t-m minimum free space %%\n"); 485 fprintf(stderr, "\t-o optimization preference (`space' or `time')\n"); 486 fprintf(stderr, "\t-p partition name (a..h)\n"); 487 fprintf(stderr, "\t-r reserved sectors at the end of device\n"); 488 fprintf(stderr, "\t-s file system size (sectors)\n"); 489 fprintf(stderr, "\t-t enable TRIM\n"); 490 exit(1); 491} 492 493static int 494expand_number_int(const char *buf, int *num) 495{ 496 int64_t num64; 497 int rval; 498 499 rval = expand_number(buf, &num64); 500 if (rval < 0) 501 return (rval); 502 if (num64 > INT_MAX || num64 < INT_MIN) { 503 errno = ERANGE; 504 return (-1); 505 } 506 *num = (int)num64; 507 return (0); 508} 509