1 /* $NetBSD: ffs.c,v 1.45 2011/10/09 22:49:26 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Luke Mewburn for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 /* 38 * Copyright (c) 1982, 1986, 1989, 1993 39 * The Regents of the University of California. All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. Neither the name of the University nor the names of its contributors 50 * may be used to endorse or promote products derived from this software 51 * without specific prior written permission. 52 * 53 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 54 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 55 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 56 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 57 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 58 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 59 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 61 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 62 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 63 * SUCH DAMAGE. 64 * 65 * @(#)ffs_alloc.c 8.19 (Berkeley) 7/13/95 66 */ 67 68 #include <sys/cdefs.h> 69 __FBSDID("$FreeBSD$"); 70 71 #include <sys/param.h> 72 73 #include <sys/mount.h> 74 75 #include <assert.h> 76 #include <errno.h> 77 #include <fcntl.h> 78 #include <stdarg.h> 79 #include <stdint.h> 80 #include <stdio.h> 81 #include <stdlib.h> 82 #include <string.h> 83 #include <time.h> 84 #include <unistd.h> 85 #include <util.h> 86 87 #include "makefs.h" 88 #include "ffs.h" 89 90 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 91 #include <sys/statvfs.h> 92 #endif 93 94 #include <ufs/ufs/dinode.h> 95 #include <ufs/ufs/dir.h> 96 #include <ufs/ffs/fs.h> 97 98 99 #include "ffs/ufs_bswap.h" 100 #include "ffs/ufs_inode.h" 101 #include "ffs/newfs_extern.h" 102 #include "ffs/ffs_extern.h" 103 104 #undef DIP 105 #define DIP(dp, field) \ 106 ((ffs_opts->version == 1) ? \ 107 (dp)->ffs1_din.di_##field : (dp)->ffs2_din.di_##field) 108 109 /* 110 * Various file system defaults (cribbed from newfs(8)). 111 */ 112 #define DFL_FRAGSIZE 1024 /* fragment size */ 113 #define DFL_BLKSIZE 8192 /* block size */ 114 #define DFL_SECSIZE 512 /* sector size */ 115 #define DFL_CYLSPERGROUP 65536 /* cylinders per group */ 116 #define DFL_FRAGSPERINODE 4 /* fragments per inode */ 117 #define DFL_ROTDELAY 0 /* rotational delay */ 118 #define DFL_NRPOS 1 /* rotational positions */ 119 #define DFL_RPM 3600 /* rpm of disk */ 120 #define DFL_NSECTORS 64 /* # of sectors */ 121 #define DFL_NTRACKS 16 /* # of tracks */ 122 123 124 typedef struct { 125 u_char *buf; /* buf for directory */ 126 doff_t size; /* full size of buf */ 127 doff_t cur; /* offset of current entry */ 128 } dirbuf_t; 129 130 131 static int ffs_create_image(const char *, fsinfo_t *); 132 static void ffs_dump_fsinfo(fsinfo_t *); 133 static void ffs_dump_dirbuf(dirbuf_t *, const char *, int); 134 static void ffs_make_dirbuf(dirbuf_t *, const char *, fsnode *, int); 135 static int ffs_populate_dir(const char *, fsnode *, fsinfo_t *); 136 static void ffs_size_dir(fsnode *, fsinfo_t *); 137 static void ffs_validate(const char *, fsnode *, fsinfo_t *); 138 static void ffs_write_file(union dinode *, uint32_t, void *, fsinfo_t *); 139 static void ffs_write_inode(union dinode *, uint32_t, const fsinfo_t *); 140 static void *ffs_build_dinode1(struct ufs1_dinode *, dirbuf_t *, fsnode *, 141 fsnode *, fsinfo_t *); 142 static void *ffs_build_dinode2(struct ufs2_dinode *, dirbuf_t *, fsnode *, 143 fsnode *, fsinfo_t *); 144 145 146 147 /* publicly visible functions */ 148 149 void 150 ffs_prep_opts(fsinfo_t *fsopts) 151 { 152 ffs_opt_t *ffs_opts = ecalloc(1, sizeof(*ffs_opts)); 153 154 const option_t ffs_options[] = { 155 { 'b', "bsize", &ffs_opts->bsize, OPT_INT32, 156 1, INT_MAX, "block size" }, 157 { 'f', "fsize", &ffs_opts->fsize, OPT_INT32, 158 1, INT_MAX, "fragment size" }, 159 { 'd', "density", &ffs_opts->density, OPT_INT32, 160 1, INT_MAX, "bytes per inode" }, 161 { 'm', "minfree", &ffs_opts->minfree, OPT_INT32, 162 0, 99, "minfree" }, 163 { 'M', "maxbpg", &ffs_opts->maxbpg, OPT_INT32, 164 1, INT_MAX, "max blocks per file in a cg" }, 165 { 'a', "avgfilesize", &ffs_opts->avgfilesize, OPT_INT32, 166 1, INT_MAX, "expected average file size" }, 167 { 'n', "avgfpdir", &ffs_opts->avgfpdir, OPT_INT32, 168 1, INT_MAX, "expected # of files per directory" }, 169 { 'x', "extent", &ffs_opts->maxbsize, OPT_INT32, 170 1, INT_MAX, "maximum # extent size" }, 171 { 'g', "maxbpcg", &ffs_opts->maxblkspercg, OPT_INT32, 172 1, INT_MAX, "max # of blocks per group" }, 173 { 'v', "version", &ffs_opts->version, OPT_INT32, 174 1, 2, "UFS version" }, 175 { 'o', "optimization", NULL, OPT_STRBUF, 176 0, 0, "Optimization (time|space)" }, 177 { 'l', "label", ffs_opts->label, OPT_STRARRAY, 178 1, sizeof(ffs_opts->label), "UFS label" }, 179 { .name = NULL } 180 }; 181 182 ffs_opts->bsize= -1; 183 ffs_opts->fsize= -1; 184 ffs_opts->cpg= -1; 185 ffs_opts->density= -1; 186 ffs_opts->minfree= -1; 187 ffs_opts->optimization= -1; 188 ffs_opts->maxcontig= -1; 189 ffs_opts->maxbpg= -1; 190 ffs_opts->avgfilesize= -1; 191 ffs_opts->avgfpdir= -1; 192 ffs_opts->version = 1; 193 194 fsopts->fs_specific = ffs_opts; 195 fsopts->fs_options = copy_opts(ffs_options); 196 } 197 198 void 199 ffs_cleanup_opts(fsinfo_t *fsopts) 200 { 201 free(fsopts->fs_specific); 202 free(fsopts->fs_options); 203 } 204 205 int 206 ffs_parse_opts(const char *option, fsinfo_t *fsopts) 207 { 208 ffs_opt_t *ffs_opts = fsopts->fs_specific; 209 option_t *ffs_options = fsopts->fs_options; 210 char buf[1024]; 211 212 int rv; 213 214 assert(option != NULL); 215 assert(fsopts != NULL); 216 assert(ffs_opts != NULL); 217 218 if (debug & DEBUG_FS_PARSE_OPTS) 219 printf("ffs_parse_opts: got `%s'\n", option); 220 221 rv = set_option(ffs_options, option, buf, sizeof(buf)); 222 if (rv == -1) 223 return 0; 224 225 if (ffs_options[rv].name == NULL) 226 abort(); 227 228 switch (ffs_options[rv].letter) { 229 case 'o': 230 if (strcmp(buf, "time") == 0) { 231 ffs_opts->optimization = FS_OPTTIME; 232 } else if (strcmp(buf, "space") == 0) { 233 ffs_opts->optimization = FS_OPTSPACE; 234 } else { 235 warnx("Invalid optimization `%s'", buf); 236 return 0; 237 } 238 break; 239 default: 240 break; 241 } 242 return 1; 243 } 244 245 246 void 247 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 248 { 249 struct fs *superblock; 250 struct timeval start; 251 252 assert(image != NULL); 253 assert(dir != NULL); 254 assert(root != NULL); 255 assert(fsopts != NULL); 256 257 if (debug & DEBUG_FS_MAKEFS) 258 printf("ffs_makefs: image %s directory %s root %p\n", 259 image, dir, root); 260 261 /* validate tree and options */ 262 TIMER_START(start); 263 ffs_validate(dir, root, fsopts); 264 TIMER_RESULTS(start, "ffs_validate"); 265 266 printf("Calculated size of `%s': %lld bytes, %lld inodes\n", 267 image, (long long)fsopts->size, (long long)fsopts->inodes); 268 269 /* create image */ 270 TIMER_START(start); 271 if (ffs_create_image(image, fsopts) == -1) 272 errx(1, "Image file `%s' not created.", image); 273 TIMER_RESULTS(start, "ffs_create_image"); 274 275 fsopts->curinode = UFS_ROOTINO; 276 277 if (debug & DEBUG_FS_MAKEFS) 278 putchar('\n'); 279 280 /* populate image */ 281 printf("Populating `%s'\n", image); 282 TIMER_START(start); 283 if (! ffs_populate_dir(dir, root, fsopts)) 284 errx(1, "Image file `%s' not populated.", image); 285 TIMER_RESULTS(start, "ffs_populate_dir"); 286 287 /* ensure no outstanding buffers remain */ 288 if (debug & DEBUG_FS_MAKEFS) 289 bcleanup(); 290 291 /* update various superblock parameters */ 292 superblock = fsopts->superblock; 293 superblock->fs_fmod = 0; 294 superblock->fs_old_cstotal.cs_ndir = superblock->fs_cstotal.cs_ndir; 295 superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree; 296 superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree; 297 superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree; 298 299 /* write out superblock; image is now complete */ 300 ffs_write_superblock(fsopts->superblock, fsopts); 301 if (close(fsopts->fd) == -1) 302 err(1, "Closing `%s'", image); 303 fsopts->fd = -1; 304 printf("Image `%s' complete\n", image); 305 } 306 307 /* end of public functions */ 308 309 310 static void 311 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts) 312 { 313 int32_t ncg = 1; 314 #if notyet 315 int32_t spc, nspf, ncyl, fssize; 316 #endif 317 ffs_opt_t *ffs_opts = fsopts->fs_specific; 318 319 assert(dir != NULL); 320 assert(root != NULL); 321 assert(fsopts != NULL); 322 assert(ffs_opts != NULL); 323 324 if (debug & DEBUG_FS_VALIDATE) { 325 printf("ffs_validate: before defaults set:\n"); 326 ffs_dump_fsinfo(fsopts); 327 } 328 329 /* set FFS defaults */ 330 if (fsopts->sectorsize == -1) 331 fsopts->sectorsize = DFL_SECSIZE; 332 if (ffs_opts->fsize == -1) 333 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize); 334 if (ffs_opts->bsize == -1) 335 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize); 336 if (ffs_opts->cpg == -1) 337 ffs_opts->cpg = DFL_CYLSPERGROUP; 338 else 339 ffs_opts->cpgflg = 1; 340 /* fsopts->density is set below */ 341 if (ffs_opts->nsectors == -1) 342 ffs_opts->nsectors = DFL_NSECTORS; 343 if (ffs_opts->minfree == -1) 344 ffs_opts->minfree = MINFREE; 345 if (ffs_opts->optimization == -1) 346 ffs_opts->optimization = DEFAULTOPT; 347 if (ffs_opts->maxcontig == -1) 348 ffs_opts->maxcontig = 349 MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize); 350 /* XXX ondisk32 */ 351 if (ffs_opts->maxbpg == -1) 352 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t); 353 if (ffs_opts->avgfilesize == -1) 354 ffs_opts->avgfilesize = AVFILESIZ; 355 if (ffs_opts->avgfpdir == -1) 356 ffs_opts->avgfpdir = AFPDIR; 357 358 if (fsopts->maxsize > 0 && 359 roundup(fsopts->minsize, ffs_opts->bsize) > fsopts->maxsize) 360 errx(1, "`%s' minsize of %lld rounded up to ffs bsize of %d " 361 "exceeds maxsize %lld. Lower bsize, or round the minimum " 362 "and maximum sizes to bsize.", dir, 363 (long long)fsopts->minsize, ffs_opts->bsize, 364 (long long)fsopts->maxsize); 365 366 /* calculate size of tree */ 367 ffs_size_dir(root, fsopts); 368 fsopts->inodes += UFS_ROOTINO; /* include first two inodes */ 369 370 if (debug & DEBUG_FS_VALIDATE) 371 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n", 372 (long long)fsopts->size, (long long)fsopts->inodes); 373 374 /* add requested slop */ 375 fsopts->size += fsopts->freeblocks; 376 fsopts->inodes += fsopts->freefiles; 377 if (fsopts->freefilepc > 0) 378 fsopts->inodes = 379 fsopts->inodes * (100 + fsopts->freefilepc) / 100; 380 if (fsopts->freeblockpc > 0) 381 fsopts->size = 382 fsopts->size * (100 + fsopts->freeblockpc) / 100; 383 384 /* add space needed for superblocks */ 385 /* 386 * The old SBOFF (SBLOCK_UFS1) is used here because makefs is 387 * typically used for small filesystems where space matters. 388 * XXX make this an option. 389 */ 390 fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg; 391 /* add space needed to store inodes, x3 for blockmaps, etc */ 392 if (ffs_opts->version == 1) 393 fsopts->size += ncg * DINODE1_SIZE * 394 roundup(fsopts->inodes / ncg, 395 ffs_opts->bsize / DINODE1_SIZE); 396 else 397 fsopts->size += ncg * DINODE2_SIZE * 398 roundup(fsopts->inodes / ncg, 399 ffs_opts->bsize / DINODE2_SIZE); 400 401 /* add minfree */ 402 if (ffs_opts->minfree > 0) 403 fsopts->size = 404 fsopts->size * (100 + ffs_opts->minfree) / 100; 405 /* 406 * XXX any other fs slop to add, such as csum's, bitmaps, etc ?? 407 */ 408 409 if (fsopts->size < fsopts->minsize) /* ensure meets minimum size */ 410 fsopts->size = fsopts->minsize; 411 412 /* round up to the next block */ 413 fsopts->size = roundup(fsopts->size, ffs_opts->bsize); 414 415 /* round up to requested block size, if any */ 416 if (fsopts->roundup > 0) 417 fsopts->size = roundup(fsopts->size, fsopts->roundup); 418 419 /* calculate density if necessary */ 420 if (ffs_opts->density == -1) 421 ffs_opts->density = fsopts->size / fsopts->inodes + 1; 422 423 if (debug & DEBUG_FS_VALIDATE) { 424 printf("ffs_validate: after defaults set:\n"); 425 ffs_dump_fsinfo(fsopts); 426 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n", 427 dir, (long long)fsopts->size, (long long)fsopts->inodes); 428 } 429 /* now check calculated sizes vs requested sizes */ 430 if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) { 431 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.", 432 dir, (long long)fsopts->size, (long long)fsopts->maxsize); 433 } 434 } 435 436 437 static void 438 ffs_dump_fsinfo(fsinfo_t *f) 439 { 440 441 ffs_opt_t *fs = f->fs_specific; 442 443 printf("fsopts at %p\n", f); 444 445 printf("\tsize %lld, inodes %lld, curinode %u\n", 446 (long long)f->size, (long long)f->inodes, f->curinode); 447 448 printf("\tminsize %lld, maxsize %lld\n", 449 (long long)f->minsize, (long long)f->maxsize); 450 printf("\tfree files %lld, freefile %% %d\n", 451 (long long)f->freefiles, f->freefilepc); 452 printf("\tfree blocks %lld, freeblock %% %d\n", 453 (long long)f->freeblocks, f->freeblockpc); 454 printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize); 455 456 printf("\tbsize %d, fsize %d, cpg %d, density %d\n", 457 fs->bsize, fs->fsize, fs->cpg, fs->density); 458 printf("\tnsectors %d, rpm %d, minfree %d\n", 459 fs->nsectors, fs->rpm, fs->minfree); 460 printf("\tmaxcontig %d, maxbpg %d\n", 461 fs->maxcontig, fs->maxbpg); 462 printf("\toptimization %s\n", 463 fs->optimization == FS_OPTSPACE ? "space" : "time"); 464 } 465 466 467 static int 468 ffs_create_image(const char *image, fsinfo_t *fsopts) 469 { 470 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 471 struct statvfs sfs; 472 #endif 473 struct fs *fs; 474 char *buf; 475 int i, bufsize; 476 off_t bufrem; 477 time_t tstamp; 478 479 assert (image != NULL); 480 assert (fsopts != NULL); 481 482 /* create image */ 483 if ((fsopts->fd = open(image, O_RDWR | O_CREAT | O_TRUNC, 0666)) 484 == -1) { 485 warn("Can't open `%s' for writing", image); 486 return (-1); 487 } 488 489 /* zero image */ 490 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 491 if (fstatvfs(fsopts->fd, &sfs) == -1) { 492 #endif 493 bufsize = 8192; 494 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 495 warn("can't fstatvfs `%s', using default %d byte chunk", 496 image, bufsize); 497 } else 498 bufsize = sfs.f_iosize; 499 #endif 500 bufrem = fsopts->size; 501 if (fsopts->sparse) { 502 if (ftruncate(fsopts->fd, bufrem) == -1) { 503 warn("sparse option disabled."); 504 fsopts->sparse = 0; 505 } 506 } 507 if (fsopts->sparse) { 508 /* File truncated at bufrem. Remaining is 0 */ 509 bufrem = 0; 510 buf = NULL; 511 } else { 512 if (debug & DEBUG_FS_CREATE_IMAGE) 513 printf("zero-ing image `%s', %lld sectors, " 514 "using %d byte chunks\n", image, (long long)bufrem, 515 bufsize); 516 buf = ecalloc(1, bufsize); 517 } 518 while (bufrem > 0) { 519 i = write(fsopts->fd, buf, MIN(bufsize, bufrem)); 520 if (i == -1) { 521 warn("zeroing image, %lld bytes to go", 522 (long long)bufrem); 523 free(buf); 524 return (-1); 525 } 526 bufrem -= i; 527 } 528 if (buf) 529 free(buf); 530 531 /* make the file system */ 532 if (debug & DEBUG_FS_CREATE_IMAGE) 533 printf("calling mkfs(\"%s\", ...)\n", image); 534 535 if (stampst.st_ino != 0) 536 tstamp = stampst.st_ctime; 537 else 538 tstamp = start_time.tv_sec; 539 540 srandom(tstamp); 541 542 fs = ffs_mkfs(image, fsopts, tstamp); 543 fsopts->superblock = (void *)fs; 544 if (debug & DEBUG_FS_CREATE_IMAGE) { 545 time_t t; 546 547 t = (time_t)((struct fs *)fsopts->superblock)->fs_time; 548 printf("mkfs returned %p; fs_time %s", 549 fsopts->superblock, ctime(&t)); 550 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n", 551 (long long)fs->fs_cstotal.cs_nbfree, 552 (long long)fs->fs_cstotal.cs_nffree, 553 (long long)fs->fs_cstotal.cs_nifree, 554 (long long)fs->fs_cstotal.cs_ndir); 555 } 556 557 if (fs->fs_cstotal.cs_nifree + UFS_ROOTINO < fsopts->inodes) { 558 warnx( 559 "Image file `%s' has %lld free inodes; %lld are required.", 560 image, 561 (long long)(fs->fs_cstotal.cs_nifree + UFS_ROOTINO), 562 (long long)fsopts->inodes); 563 return (-1); 564 } 565 return (fsopts->fd); 566 } 567 568 569 static void 570 ffs_size_dir(fsnode *root, fsinfo_t *fsopts) 571 { 572 struct direct tmpdir; 573 fsnode * node; 574 int curdirsize, this; 575 ffs_opt_t *ffs_opts = fsopts->fs_specific; 576 577 /* node may be NULL (empty directory) */ 578 assert(fsopts != NULL); 579 assert(ffs_opts != NULL); 580 581 if (debug & DEBUG_FS_SIZE_DIR) 582 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n", 583 (long long)fsopts->size, (long long)fsopts->inodes); 584 585 #define ADDDIRENT(e) do { \ 586 tmpdir.d_namlen = strlen((e)); \ 587 this = DIRSIZ_SWAP(0, &tmpdir, 0); \ 588 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \ 589 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n", \ 590 e, tmpdir.d_namlen, this, curdirsize); \ 591 if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ)) \ 592 curdirsize = roundup(curdirsize, DIRBLKSIZ); \ 593 curdirsize += this; \ 594 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \ 595 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n", \ 596 e, tmpdir.d_namlen, this, curdirsize); \ 597 } while (0); 598 599 /* 600 * XXX this needs to take into account extra space consumed 601 * by indirect blocks, etc. 602 */ 603 #define ADDSIZE(x) do { \ 604 fsopts->size += roundup((x), ffs_opts->fsize); \ 605 } while (0); 606 607 curdirsize = 0; 608 for (node = root; node != NULL; node = node->next) { 609 ADDDIRENT(node->name); 610 if (node == root) { /* we're at "." */ 611 assert(strcmp(node->name, ".") == 0); 612 ADDDIRENT(".."); 613 } else if ((node->inode->flags & FI_SIZED) == 0) { 614 /* don't count duplicate names */ 615 node->inode->flags |= FI_SIZED; 616 if (debug & DEBUG_FS_SIZE_DIR_NODE) 617 printf("ffs_size_dir: `%s' size %lld\n", 618 node->name, 619 (long long)node->inode->st.st_size); 620 fsopts->inodes++; 621 if (node->type == S_IFREG) 622 ADDSIZE(node->inode->st.st_size); 623 if (node->type == S_IFLNK) { 624 int slen; 625 626 slen = strlen(node->symlink) + 1; 627 if (slen >= (ffs_opts->version == 1 ? 628 UFS1_MAXSYMLINKLEN : 629 UFS2_MAXSYMLINKLEN)) 630 ADDSIZE(slen); 631 } 632 } 633 if (node->type == S_IFDIR) 634 ffs_size_dir(node->child, fsopts); 635 } 636 ADDSIZE(curdirsize); 637 638 if (debug & DEBUG_FS_SIZE_DIR) 639 printf("ffs_size_dir: exit: size %lld inodes %lld\n", 640 (long long)fsopts->size, (long long)fsopts->inodes); 641 } 642 643 static void * 644 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur, 645 fsnode *root, fsinfo_t *fsopts) 646 { 647 int slen; 648 void *membuf; 649 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st; 650 651 memset(dinp, 0, sizeof(*dinp)); 652 dinp->di_mode = cur->inode->st.st_mode; 653 dinp->di_nlink = cur->inode->nlink; 654 dinp->di_size = cur->inode->st.st_size; 655 #if HAVE_STRUCT_STAT_ST_FLAGS 656 dinp->di_flags = cur->inode->st.st_flags; 657 #endif 658 dinp->di_gen = random(); 659 dinp->di_uid = cur->inode->st.st_uid; 660 dinp->di_gid = cur->inode->st.st_gid; 661 662 dinp->di_atime = st->st_atime; 663 dinp->di_mtime = st->st_mtime; 664 dinp->di_ctime = st->st_ctime; 665 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 666 dinp->di_atimensec = st->st_atimensec; 667 dinp->di_mtimensec = st->st_mtimensec; 668 dinp->di_ctimensec = st->st_ctimensec; 669 #endif 670 /* not set: di_db, di_ib, di_blocks, di_spare */ 671 672 membuf = NULL; 673 if (cur == root) { /* "."; write dirbuf */ 674 membuf = dbufp->buf; 675 dinp->di_size = dbufp->size; 676 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) { 677 dinp->di_size = 0; /* a device */ 678 dinp->di_rdev = 679 ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap); 680 } else if (S_ISLNK(cur->type)) { /* symlink */ 681 slen = strlen(cur->symlink); 682 if (slen < UFS1_MAXSYMLINKLEN) { /* short link */ 683 memcpy(dinp->di_db, cur->symlink, slen); 684 } else 685 membuf = cur->symlink; 686 dinp->di_size = slen; 687 } 688 return membuf; 689 } 690 691 static void * 692 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur, 693 fsnode *root, fsinfo_t *fsopts) 694 { 695 int slen; 696 void *membuf; 697 struct stat *st = stampst.st_ino != 0 ? &stampst : &cur->inode->st; 698 699 memset(dinp, 0, sizeof(*dinp)); 700 dinp->di_mode = cur->inode->st.st_mode; 701 dinp->di_nlink = cur->inode->nlink; 702 dinp->di_size = cur->inode->st.st_size; 703 #if HAVE_STRUCT_STAT_ST_FLAGS 704 dinp->di_flags = cur->inode->st.st_flags; 705 #endif 706 dinp->di_gen = random(); 707 dinp->di_uid = cur->inode->st.st_uid; 708 dinp->di_gid = cur->inode->st.st_gid; 709 710 dinp->di_atime = st->st_atime; 711 dinp->di_mtime = st->st_mtime; 712 dinp->di_ctime = st->st_ctime; 713 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 714 dinp->di_atimensec = st->st_atimensec; 715 dinp->di_mtimensec = st->st_mtimensec; 716 dinp->di_ctimensec = st->st_ctimensec; 717 #endif 718 #if HAVE_STRUCT_STAT_BIRTHTIME 719 dinp->di_birthtime = st->st_birthtime; 720 dinp->di_birthnsec = st->st_birthtimensec; 721 #endif 722 /* not set: di_db, di_ib, di_blocks, di_spare */ 723 724 membuf = NULL; 725 if (cur == root) { /* "."; write dirbuf */ 726 membuf = dbufp->buf; 727 dinp->di_size = dbufp->size; 728 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) { 729 dinp->di_size = 0; /* a device */ 730 dinp->di_rdev = 731 ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap); 732 } else if (S_ISLNK(cur->type)) { /* symlink */ 733 slen = strlen(cur->symlink); 734 if (slen < UFS2_MAXSYMLINKLEN) { /* short link */ 735 memcpy(dinp->di_db, cur->symlink, slen); 736 } else 737 membuf = cur->symlink; 738 dinp->di_size = slen; 739 } 740 return membuf; 741 } 742 743 static int 744 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts) 745 { 746 fsnode *cur; 747 dirbuf_t dirbuf; 748 union dinode din; 749 void *membuf; 750 char path[MAXPATHLEN + 1]; 751 ffs_opt_t *ffs_opts = fsopts->fs_specific; 752 753 assert(dir != NULL); 754 assert(root != NULL); 755 assert(fsopts != NULL); 756 assert(ffs_opts != NULL); 757 758 (void)memset(&dirbuf, 0, sizeof(dirbuf)); 759 760 if (debug & DEBUG_FS_POPULATE) 761 printf("ffs_populate_dir: PASS 1 dir %s node %p\n", dir, root); 762 763 /* 764 * pass 1: allocate inode numbers, build directory `file' 765 */ 766 for (cur = root; cur != NULL; cur = cur->next) { 767 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 768 cur->inode->flags |= FI_ALLOCATED; 769 if (cur == root && cur->parent != NULL) 770 cur->inode->ino = cur->parent->inode->ino; 771 else { 772 cur->inode->ino = fsopts->curinode; 773 fsopts->curinode++; 774 } 775 } 776 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap); 777 if (cur == root) { /* we're at "."; add ".." */ 778 ffs_make_dirbuf(&dirbuf, "..", 779 cur->parent == NULL ? cur : cur->parent->first, 780 fsopts->needswap); 781 root->inode->nlink++; /* count my parent's link */ 782 } else if (cur->child != NULL) 783 root->inode->nlink++; /* count my child's link */ 784 785 /* 786 * XXX possibly write file and long symlinks here, 787 * ensuring that blocks get written before inodes? 788 * otoh, this isn't a real filesystem, so who 789 * cares about ordering? :-) 790 */ 791 } 792 if (debug & DEBUG_FS_POPULATE_DIRBUF) 793 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap); 794 795 /* 796 * pass 2: write out dirbuf, then non-directories at this level 797 */ 798 if (debug & DEBUG_FS_POPULATE) 799 printf("ffs_populate_dir: PASS 2 dir %s\n", dir); 800 for (cur = root; cur != NULL; cur = cur->next) { 801 if (cur->inode->flags & FI_WRITTEN) 802 continue; /* skip hard-linked entries */ 803 cur->inode->flags |= FI_WRITTEN; 804 805 if (cur->contents == NULL) { 806 if (snprintf(path, sizeof(path), "%s/%s/%s", cur->root, 807 cur->path, cur->name) >= (int)sizeof(path)) 808 errx(1, "Pathname too long."); 809 } 810 811 if (cur->child != NULL) 812 continue; /* child creates own inode */ 813 814 /* build on-disk inode */ 815 if (ffs_opts->version == 1) 816 membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur, 817 root, fsopts); 818 else 819 membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur, 820 root, fsopts); 821 822 if (debug & DEBUG_FS_POPULATE_NODE) { 823 printf("ffs_populate_dir: writing ino %d, %s", 824 cur->inode->ino, inode_type(cur->type)); 825 if (cur->inode->nlink > 1) 826 printf(", nlink %d", cur->inode->nlink); 827 putchar('\n'); 828 } 829 830 if (membuf != NULL) { 831 ffs_write_file(&din, cur->inode->ino, membuf, fsopts); 832 } else if (S_ISREG(cur->type)) { 833 ffs_write_file(&din, cur->inode->ino, 834 (cur->contents) ? cur->contents : path, fsopts); 835 } else { 836 assert (! S_ISDIR(cur->type)); 837 ffs_write_inode(&din, cur->inode->ino, fsopts); 838 } 839 } 840 841 /* 842 * pass 3: write out sub-directories 843 */ 844 if (debug & DEBUG_FS_POPULATE) 845 printf("ffs_populate_dir: PASS 3 dir %s\n", dir); 846 for (cur = root; cur != NULL; cur = cur->next) { 847 if (cur->child == NULL) 848 continue; 849 if (snprintf(path, sizeof(path), "%s/%s", dir, cur->name) 850 >= sizeof(path)) 851 errx(1, "Pathname too long."); 852 if (! ffs_populate_dir(path, cur->child, fsopts)) 853 return (0); 854 } 855 856 if (debug & DEBUG_FS_POPULATE) 857 printf("ffs_populate_dir: DONE dir %s\n", dir); 858 859 /* cleanup */ 860 if (dirbuf.buf != NULL) 861 free(dirbuf.buf); 862 return (1); 863 } 864 865 866 static void 867 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts) 868 { 869 int isfile, ffd; 870 char *fbuf, *p; 871 off_t bufleft, chunk, offset; 872 ssize_t nread; 873 struct inode in; 874 struct buf * bp; 875 ffs_opt_t *ffs_opts = fsopts->fs_specific; 876 877 assert (din != NULL); 878 assert (buf != NULL); 879 assert (fsopts != NULL); 880 assert (ffs_opts != NULL); 881 882 isfile = S_ISREG(DIP(din, mode)); 883 fbuf = NULL; 884 ffd = -1; 885 p = NULL; 886 887 in.i_fs = (struct fs *)fsopts->superblock; 888 889 if (debug & DEBUG_FS_WRITE_FILE) { 890 printf( 891 "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld", 892 ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT), 893 (long long)DIP(din, size)); 894 if (isfile) 895 printf(", file '%s'\n", (char *)buf); 896 else 897 printf(", buffer %p\n", buf); 898 } 899 900 in.i_number = ino; 901 in.i_size = DIP(din, size); 902 if (ffs_opts->version == 1) 903 memcpy(&in.i_din.ffs1_din, &din->ffs1_din, 904 sizeof(in.i_din.ffs1_din)); 905 else 906 memcpy(&in.i_din.ffs2_din, &din->ffs2_din, 907 sizeof(in.i_din.ffs2_din)); 908 in.i_fd = fsopts->fd; 909 910 if (DIP(din, size) == 0) 911 goto write_inode_and_leave; /* mmm, cheating */ 912 913 if (isfile) { 914 fbuf = emalloc(ffs_opts->bsize); 915 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) { 916 warn("Can't open `%s' for reading", (char *)buf); 917 goto leave_ffs_write_file; 918 } 919 } else { 920 p = buf; 921 } 922 923 chunk = 0; 924 for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) { 925 chunk = MIN(bufleft, ffs_opts->bsize); 926 if (!isfile) 927 ; 928 else if ((nread = read(ffd, fbuf, chunk)) == -1) 929 err(EXIT_FAILURE, "Reading `%s', %lld bytes to go", 930 (char *)buf, (long long)bufleft); 931 else if (nread != chunk) 932 errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, " 933 "read %zd bytes, expected %ju bytes, does " 934 "metalog size= attribute mismatch source size?", 935 (char *)buf, (long long)bufleft, nread, 936 (uintmax_t)chunk); 937 else 938 p = fbuf; 939 offset = DIP(din, size) - bufleft; 940 if (debug & DEBUG_FS_WRITE_FILE_BLOCK) 941 printf( 942 "ffs_write_file: write %p offset %lld size %lld left %lld\n", 943 p, (long long)offset, 944 (long long)chunk, (long long)bufleft); 945 /* 946 * XXX if holey support is desired, do the check here 947 * 948 * XXX might need to write out last bit in fragroundup 949 * sized chunk. however, ffs_balloc() handles this for us 950 */ 951 errno = ffs_balloc(&in, offset, chunk, &bp); 952 bad_ffs_write_file: 953 if (errno != 0) 954 err(1, 955 "Writing inode %d (%s), bytes %lld + %lld", 956 ino, 957 isfile ? (char *)buf : 958 inode_type(DIP(din, mode) & S_IFMT), 959 (long long)offset, (long long)chunk); 960 memcpy(bp->b_data, p, chunk); 961 errno = bwrite(bp); 962 if (errno != 0) 963 goto bad_ffs_write_file; 964 brelse(bp, 0); 965 if (!isfile) 966 p += chunk; 967 } 968 969 write_inode_and_leave: 970 ffs_write_inode(&in.i_din, in.i_number, fsopts); 971 972 leave_ffs_write_file: 973 if (fbuf) 974 free(fbuf); 975 if (ffd != -1) 976 close(ffd); 977 } 978 979 980 static void 981 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap) 982 { 983 doff_t i; 984 struct direct *de; 985 uint16_t reclen; 986 987 assert (dbuf != NULL); 988 assert (dir != NULL); 989 printf("ffs_dump_dirbuf: dir %s size %d cur %d\n", 990 dir, dbuf->size, dbuf->cur); 991 992 for (i = 0; i < dbuf->size; ) { 993 de = (struct direct *)(dbuf->buf + i); 994 reclen = ufs_rw16(de->d_reclen, needswap); 995 printf( 996 " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n", 997 ufs_rw32(de->d_ino, needswap), 998 inode_type(DTTOIF(de->d_type)), i, reclen, 999 de->d_namlen, de->d_name); 1000 i += reclen; 1001 assert(reclen > 0); 1002 } 1003 } 1004 1005 static void 1006 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap) 1007 { 1008 struct direct de, *dp; 1009 uint16_t llen, reclen; 1010 u_char *newbuf; 1011 1012 assert (dbuf != NULL); 1013 assert (name != NULL); 1014 assert (node != NULL); 1015 /* create direct entry */ 1016 (void)memset(&de, 0, sizeof(de)); 1017 de.d_ino = ufs_rw32(node->inode->ino, needswap); 1018 de.d_type = IFTODT(node->type); 1019 de.d_namlen = (uint8_t)strlen(name); 1020 strcpy(de.d_name, name); 1021 reclen = DIRSIZ_SWAP(0, &de, needswap); 1022 de.d_reclen = ufs_rw16(reclen, needswap); 1023 1024 dp = (struct direct *)(dbuf->buf + dbuf->cur); 1025 llen = 0; 1026 if (dp != NULL) 1027 llen = DIRSIZ_SWAP(0, dp, needswap); 1028 1029 if (debug & DEBUG_FS_MAKE_DIRBUF) 1030 printf( 1031 "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n" 1032 " ino %d type %d reclen %d namlen %d name %.30s\n", 1033 dbuf->size, dbuf->cur, llen, 1034 ufs_rw32(de.d_ino, needswap), de.d_type, reclen, 1035 de.d_namlen, de.d_name); 1036 1037 if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) { 1038 if (debug & DEBUG_FS_MAKE_DIRBUF) 1039 printf("ffs_make_dirbuf: growing buf to %d\n", 1040 dbuf->size + DIRBLKSIZ); 1041 newbuf = erealloc(dbuf->buf, dbuf->size + DIRBLKSIZ); 1042 dbuf->buf = newbuf; 1043 dbuf->size += DIRBLKSIZ; 1044 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ); 1045 dbuf->cur = dbuf->size - DIRBLKSIZ; 1046 } else if (dp) { /* shrink end of previous */ 1047 dp->d_reclen = ufs_rw16(llen,needswap); 1048 dbuf->cur += llen; 1049 } 1050 dp = (struct direct *)(dbuf->buf + dbuf->cur); 1051 memcpy(dp, &de, reclen); 1052 dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap); 1053 } 1054 1055 /* 1056 * cribbed from sys/ufs/ffs/ffs_alloc.c 1057 */ 1058 static void 1059 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts) 1060 { 1061 char *buf; 1062 struct ufs1_dinode *dp1; 1063 struct ufs2_dinode *dp2, *dip; 1064 struct cg *cgp; 1065 struct fs *fs; 1066 int cg, cgino, i; 1067 daddr_t d; 1068 char sbbuf[FFS_MAXBSIZE]; 1069 int32_t initediblk; 1070 ffs_opt_t *ffs_opts = fsopts->fs_specific; 1071 1072 assert (dp != NULL); 1073 assert (ino > 0); 1074 assert (fsopts != NULL); 1075 assert (ffs_opts != NULL); 1076 1077 fs = (struct fs *)fsopts->superblock; 1078 cg = ino_to_cg(fs, ino); 1079 cgino = ino % fs->fs_ipg; 1080 if (debug & DEBUG_FS_WRITE_INODE) 1081 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n", 1082 dp, ino, cg, cgino); 1083 1084 ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf, 1085 fsopts); 1086 cgp = (struct cg *)sbbuf; 1087 if (!cg_chkmagic_swap(cgp, fsopts->needswap)) 1088 errx(1, "ffs_write_inode: cg %d: bad magic number", cg); 1089 1090 assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino)); 1091 1092 buf = emalloc(fs->fs_bsize); 1093 dp1 = (struct ufs1_dinode *)buf; 1094 dp2 = (struct ufs2_dinode *)buf; 1095 1096 if (fs->fs_cstotal.cs_nifree == 0) 1097 errx(1, "ffs_write_inode: fs out of inodes for ino %u", 1098 ino); 1099 if (fs->fs_cs(fs, cg).cs_nifree == 0) 1100 errx(1, 1101 "ffs_write_inode: cg %d out of inodes for ino %u", 1102 cg, ino); 1103 setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino); 1104 ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap); 1105 fs->fs_cstotal.cs_nifree--; 1106 fs->fs_cs(fs, cg).cs_nifree--; 1107 if (S_ISDIR(DIP(dp, mode))) { 1108 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap); 1109 fs->fs_cstotal.cs_ndir++; 1110 fs->fs_cs(fs, cg).cs_ndir++; 1111 } 1112 1113 /* 1114 * Initialize inode blocks on the fly for UFS2. 1115 */ 1116 initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap); 1117 if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk && 1118 initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) { 1119 memset(buf, 0, fs->fs_bsize); 1120 dip = (struct ufs2_dinode *)buf; 1121 for (i = 0; i < INOPB(fs); i++) { 1122 dip->di_gen = random(); 1123 dip++; 1124 } 1125 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs, 1126 cg * fs->fs_ipg + initediblk)), 1127 fs->fs_bsize, buf, fsopts); 1128 initediblk += INOPB(fs); 1129 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap); 1130 } 1131 1132 1133 ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf, 1134 fsopts); 1135 1136 /* now write inode */ 1137 d = fsbtodb(fs, ino_to_fsba(fs, ino)); 1138 ffs_rdfs(d, fs->fs_bsize, buf, fsopts); 1139 if (fsopts->needswap) { 1140 if (ffs_opts->version == 1) 1141 ffs_dinode1_swap(&dp->ffs1_din, 1142 &dp1[ino_to_fsbo(fs, ino)]); 1143 else 1144 ffs_dinode2_swap(&dp->ffs2_din, 1145 &dp2[ino_to_fsbo(fs, ino)]); 1146 } else { 1147 if (ffs_opts->version == 1) 1148 dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din; 1149 else 1150 dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din; 1151 } 1152 ffs_wtfs(d, fs->fs_bsize, buf, fsopts); 1153 free(buf); 1154 } 1155 1156 void 1157 panic(const char *fmt, ...) 1158 { 1159 va_list ap; 1160 1161 va_start(ap, fmt); 1162 vwarnx(fmt, ap); 1163 va_end(ap); 1164 exit(1); 1165 } 1166