1 /* $NetBSD: ffs.c,v 1.44 2009/04/28 22:49:26 joerg 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 86 #include "makefs.h" 87 #include "ffs.h" 88 89 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 90 #include <sys/statvfs.h> 91 #endif 92 93 #include <ufs/ufs/dinode.h> 94 #include <ufs/ufs/dir.h> 95 #include <ufs/ffs/fs.h> 96 97 98 #include "ffs/ufs_bswap.h" 99 #include "ffs/ufs_inode.h" 100 #include "ffs/newfs_extern.h" 101 #include "ffs/ffs_extern.h" 102 103 #undef DIP 104 #define DIP(dp, field) \ 105 ((ffs_opts->version == 1) ? \ 106 (dp)->ffs1_din.di_##field : (dp)->ffs2_din.di_##field) 107 108 /* 109 * Various file system defaults (cribbed from newfs(8)). 110 */ 111 #define DFL_FRAGSIZE 1024 /* fragment size */ 112 #define DFL_BLKSIZE 8192 /* block size */ 113 #define DFL_SECSIZE 512 /* sector size */ 114 #define DFL_CYLSPERGROUP 65536 /* cylinders per group */ 115 #define DFL_FRAGSPERINODE 4 /* fragments per inode */ 116 #define DFL_ROTDELAY 0 /* rotational delay */ 117 #define DFL_NRPOS 1 /* rotational positions */ 118 #define DFL_RPM 3600 /* rpm of disk */ 119 #define DFL_NSECTORS 64 /* # of sectors */ 120 #define DFL_NTRACKS 16 /* # of tracks */ 121 122 123 typedef struct { 124 u_char *buf; /* buf for directory */ 125 doff_t size; /* full size of buf */ 126 doff_t cur; /* offset of current entry */ 127 } dirbuf_t; 128 129 130 static int ffs_create_image(const char *, fsinfo_t *); 131 static void ffs_dump_fsinfo(fsinfo_t *); 132 static void ffs_dump_dirbuf(dirbuf_t *, const char *, int); 133 static void ffs_make_dirbuf(dirbuf_t *, const char *, fsnode *, int); 134 static int ffs_populate_dir(const char *, fsnode *, fsinfo_t *); 135 static void ffs_size_dir(fsnode *, fsinfo_t *); 136 static void ffs_validate(const char *, fsnode *, fsinfo_t *); 137 static void ffs_write_file(union dinode *, uint32_t, void *, fsinfo_t *); 138 static void ffs_write_inode(union dinode *, uint32_t, const fsinfo_t *); 139 static void *ffs_build_dinode1(struct ufs1_dinode *, dirbuf_t *, fsnode *, 140 fsnode *, fsinfo_t *); 141 static void *ffs_build_dinode2(struct ufs2_dinode *, dirbuf_t *, fsnode *, 142 fsnode *, fsinfo_t *); 143 144 145 146 int sectorsize; /* XXX: for buf.c::getblk() */ 147 148 /* publically visible functions */ 149 150 void 151 ffs_prep_opts(fsinfo_t *fsopts) 152 { 153 ffs_opt_t *ffs_opts; 154 155 if ((ffs_opts = calloc(1, sizeof(ffs_opt_t))) == NULL) 156 err(1, "Allocating memory for ffs_options"); 157 158 fsopts->fs_specific = ffs_opts; 159 160 ffs_opts->bsize= -1; 161 ffs_opts->fsize= -1; 162 ffs_opts->cpg= -1; 163 ffs_opts->density= -1; 164 ffs_opts->minfree= -1; 165 ffs_opts->optimization= -1; 166 ffs_opts->maxcontig= -1; 167 ffs_opts->maxbpg= -1; 168 ffs_opts->avgfilesize= -1; 169 ffs_opts->avgfpdir= -1; 170 ffs_opts->version = 1; 171 } 172 173 void 174 ffs_cleanup_opts(fsinfo_t *fsopts) 175 { 176 if (fsopts->fs_specific) 177 free(fsopts->fs_specific); 178 } 179 180 int 181 ffs_parse_opts(const char *option, fsinfo_t *fsopts) 182 { 183 ffs_opt_t *ffs_opts = fsopts->fs_specific; 184 185 option_t ffs_options[] = { 186 { "bsize", &ffs_opts->bsize, 1, INT_MAX, 187 "block size" }, 188 { "fsize", &ffs_opts->fsize, 1, INT_MAX, 189 "fragment size" }, 190 { "density", &ffs_opts->density, 1, INT_MAX, 191 "bytes per inode" }, 192 { "minfree", &ffs_opts->minfree, 0, 99, 193 "minfree" }, 194 { "maxbpf", &ffs_opts->maxbpg, 1, INT_MAX, 195 "max blocks per file in a cg" }, 196 { "avgfilesize", &ffs_opts->avgfilesize,1, INT_MAX, 197 "expected average file size" }, 198 { "avgfpdir", &ffs_opts->avgfpdir, 1, INT_MAX, 199 "expected # of files per directory" }, 200 { "extent", &ffs_opts->maxbsize, 1, INT_MAX, 201 "maximum # extent size" }, 202 { "maxbpcg", &ffs_opts->maxblkspercg,1, INT_MAX, 203 "max # of blocks per group" }, 204 { "version", &ffs_opts->version, 1, 2, 205 "UFS version" }, 206 { .name = NULL } 207 }; 208 209 char *var, *val; 210 int rv; 211 212 assert(option != NULL); 213 assert(fsopts != NULL); 214 assert(ffs_opts != NULL); 215 216 if (debug & DEBUG_FS_PARSE_OPTS) 217 printf("ffs_parse_opts: got `%s'\n", option); 218 219 if ((var = strdup(option)) == NULL) 220 err(1, "Allocating memory for copy of option string"); 221 rv = 0; 222 223 if ((val = strchr(var, '=')) == NULL) { 224 warnx("Option `%s' doesn't contain a value", var); 225 goto leave_ffs_parse_opts; 226 } 227 *val++ = '\0'; 228 229 if (strcmp(var, "optimization") == 0) { 230 if (strcmp(val, "time") == 0) { 231 ffs_opts->optimization = FS_OPTTIME; 232 } else if (strcmp(val, "space") == 0) { 233 ffs_opts->optimization = FS_OPTSPACE; 234 } else { 235 warnx("Invalid optimization `%s'", val); 236 goto leave_ffs_parse_opts; 237 } 238 rv = 1; 239 } else 240 rv = set_option(ffs_options, var, val); 241 242 leave_ffs_parse_opts: 243 if (var) 244 free(var); 245 return (rv); 246 } 247 248 249 void 250 ffs_makefs(const char *image, const char *dir, fsnode *root, fsinfo_t *fsopts) 251 { 252 struct fs *superblock; 253 struct timeval start; 254 255 assert(image != NULL); 256 assert(dir != NULL); 257 assert(root != NULL); 258 assert(fsopts != NULL); 259 260 if (debug & DEBUG_FS_MAKEFS) 261 printf("ffs_makefs: image %s directory %s root %p\n", 262 image, dir, root); 263 264 /* validate tree and options */ 265 TIMER_START(start); 266 ffs_validate(dir, root, fsopts); 267 TIMER_RESULTS(start, "ffs_validate"); 268 269 printf("Calculated size of `%s': %lld bytes, %lld inodes\n", 270 image, (long long)fsopts->size, (long long)fsopts->inodes); 271 272 /* create image */ 273 TIMER_START(start); 274 if (ffs_create_image(image, fsopts) == -1) 275 errx(1, "Image file `%s' not created.", image); 276 TIMER_RESULTS(start, "ffs_create_image"); 277 278 fsopts->curinode = ROOTINO; 279 280 if (debug & DEBUG_FS_MAKEFS) 281 putchar('\n'); 282 283 /* populate image */ 284 printf("Populating `%s'\n", image); 285 TIMER_START(start); 286 if (! ffs_populate_dir(dir, root, fsopts)) 287 errx(1, "Image file `%s' not populated.", image); 288 TIMER_RESULTS(start, "ffs_populate_dir"); 289 290 /* ensure no outstanding buffers remain */ 291 if (debug & DEBUG_FS_MAKEFS) 292 bcleanup(); 293 294 /* update various superblock parameters */ 295 superblock = fsopts->superblock; 296 superblock->fs_fmod = 0; 297 superblock->fs_old_cstotal.cs_ndir = superblock->fs_cstotal.cs_ndir; 298 superblock->fs_old_cstotal.cs_nbfree = superblock->fs_cstotal.cs_nbfree; 299 superblock->fs_old_cstotal.cs_nifree = superblock->fs_cstotal.cs_nifree; 300 superblock->fs_old_cstotal.cs_nffree = superblock->fs_cstotal.cs_nffree; 301 302 /* write out superblock; image is now complete */ 303 ffs_write_superblock(fsopts->superblock, fsopts); 304 if (close(fsopts->fd) == -1) 305 err(1, "Closing `%s'", image); 306 fsopts->fd = -1; 307 printf("Image `%s' complete\n", image); 308 } 309 310 /* end of public functions */ 311 312 313 static void 314 ffs_validate(const char *dir, fsnode *root, fsinfo_t *fsopts) 315 { 316 int32_t ncg = 1; 317 #if notyet 318 int32_t spc, nspf, ncyl, fssize; 319 #endif 320 ffs_opt_t *ffs_opts = fsopts->fs_specific; 321 322 assert(dir != NULL); 323 assert(root != NULL); 324 assert(fsopts != NULL); 325 assert(ffs_opts != NULL); 326 327 if (debug & DEBUG_FS_VALIDATE) { 328 printf("ffs_validate: before defaults set:\n"); 329 ffs_dump_fsinfo(fsopts); 330 } 331 332 /* set FFS defaults */ 333 if (fsopts->sectorsize == -1) 334 fsopts->sectorsize = DFL_SECSIZE; 335 if (ffs_opts->fsize == -1) 336 ffs_opts->fsize = MAX(DFL_FRAGSIZE, fsopts->sectorsize); 337 if (ffs_opts->bsize == -1) 338 ffs_opts->bsize = MIN(DFL_BLKSIZE, 8 * ffs_opts->fsize); 339 if (ffs_opts->cpg == -1) 340 ffs_opts->cpg = DFL_CYLSPERGROUP; 341 else 342 ffs_opts->cpgflg = 1; 343 /* fsopts->density is set below */ 344 if (ffs_opts->nsectors == -1) 345 ffs_opts->nsectors = DFL_NSECTORS; 346 if (ffs_opts->minfree == -1) 347 ffs_opts->minfree = MINFREE; 348 if (ffs_opts->optimization == -1) 349 ffs_opts->optimization = DEFAULTOPT; 350 if (ffs_opts->maxcontig == -1) 351 ffs_opts->maxcontig = 352 MAX(1, MIN(MAXPHYS, FFS_MAXBSIZE) / ffs_opts->bsize); 353 /* XXX ondisk32 */ 354 if (ffs_opts->maxbpg == -1) 355 ffs_opts->maxbpg = ffs_opts->bsize / sizeof(int32_t); 356 if (ffs_opts->avgfilesize == -1) 357 ffs_opts->avgfilesize = AVFILESIZ; 358 if (ffs_opts->avgfpdir == -1) 359 ffs_opts->avgfpdir = AFPDIR; 360 361 /* calculate size of tree */ 362 ffs_size_dir(root, fsopts); 363 fsopts->inodes += ROOTINO; /* include first two inodes */ 364 365 if (debug & DEBUG_FS_VALIDATE) 366 printf("ffs_validate: size of tree: %lld bytes, %lld inodes\n", 367 (long long)fsopts->size, (long long)fsopts->inodes); 368 369 /* add requested slop */ 370 fsopts->size += fsopts->freeblocks; 371 fsopts->inodes += fsopts->freefiles; 372 if (fsopts->freefilepc > 0) 373 fsopts->inodes = 374 fsopts->inodes * (100 + fsopts->freefilepc) / 100; 375 if (fsopts->freeblockpc > 0) 376 fsopts->size = 377 fsopts->size * (100 + fsopts->freeblockpc) / 100; 378 379 /* add space needed for superblocks */ 380 /* 381 * The old SBOFF (SBLOCK_UFS1) is used here because makefs is 382 * typically used for small filesystems where space matters. 383 * XXX make this an option. 384 */ 385 fsopts->size += (SBLOCK_UFS1 + SBLOCKSIZE) * ncg; 386 /* add space needed to store inodes, x3 for blockmaps, etc */ 387 if (ffs_opts->version == 1) 388 fsopts->size += ncg * DINODE1_SIZE * 389 roundup(fsopts->inodes / ncg, 390 ffs_opts->bsize / DINODE1_SIZE); 391 else 392 fsopts->size += ncg * DINODE2_SIZE * 393 roundup(fsopts->inodes / ncg, 394 ffs_opts->bsize / DINODE2_SIZE); 395 396 /* add minfree */ 397 if (ffs_opts->minfree > 0) 398 fsopts->size = 399 fsopts->size * (100 + ffs_opts->minfree) / 100; 400 /* 401 * XXX any other fs slop to add, such as csum's, bitmaps, etc ?? 402 */ 403 404 if (fsopts->size < fsopts->minsize) /* ensure meets minimum size */ 405 fsopts->size = fsopts->minsize; 406 407 /* round up to the next block */ 408 fsopts->size = roundup(fsopts->size, ffs_opts->bsize); 409 410 /* calculate density if necessary */ 411 if (ffs_opts->density == -1) 412 ffs_opts->density = fsopts->size / fsopts->inodes + 1; 413 414 if (debug & DEBUG_FS_VALIDATE) { 415 printf("ffs_validate: after defaults set:\n"); 416 ffs_dump_fsinfo(fsopts); 417 printf("ffs_validate: dir %s; %lld bytes, %lld inodes\n", 418 dir, (long long)fsopts->size, (long long)fsopts->inodes); 419 } 420 sectorsize = fsopts->sectorsize; /* XXX - see earlier */ 421 422 /* now check calculated sizes vs requested sizes */ 423 if (fsopts->maxsize > 0 && fsopts->size > fsopts->maxsize) { 424 errx(1, "`%s' size of %lld is larger than the maxsize of %lld.", 425 dir, (long long)fsopts->size, (long long)fsopts->maxsize); 426 } 427 } 428 429 430 static void 431 ffs_dump_fsinfo(fsinfo_t *f) 432 { 433 434 ffs_opt_t *fs = f->fs_specific; 435 436 printf("fsopts at %p\n", f); 437 438 printf("\tsize %lld, inodes %lld, curinode %u\n", 439 (long long)f->size, (long long)f->inodes, f->curinode); 440 441 printf("\tminsize %lld, maxsize %lld\n", 442 (long long)f->minsize, (long long)f->maxsize); 443 printf("\tfree files %lld, freefile %% %d\n", 444 (long long)f->freefiles, f->freefilepc); 445 printf("\tfree blocks %lld, freeblock %% %d\n", 446 (long long)f->freeblocks, f->freeblockpc); 447 printf("\tneedswap %d, sectorsize %d\n", f->needswap, f->sectorsize); 448 449 printf("\tbsize %d, fsize %d, cpg %d, density %d\n", 450 fs->bsize, fs->fsize, fs->cpg, fs->density); 451 printf("\tnsectors %d, rpm %d, minfree %d\n", 452 fs->nsectors, fs->rpm, fs->minfree); 453 printf("\tmaxcontig %d, maxbpg %d\n", 454 fs->maxcontig, fs->maxbpg); 455 printf("\toptimization %s\n", 456 fs->optimization == FS_OPTSPACE ? "space" : "time"); 457 } 458 459 460 static int 461 ffs_create_image(const char *image, fsinfo_t *fsopts) 462 { 463 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 464 struct statvfs sfs; 465 #endif 466 struct fs *fs; 467 char *buf; 468 int i, bufsize; 469 off_t bufrem; 470 471 assert (image != NULL); 472 assert (fsopts != NULL); 473 474 /* create image */ 475 if ((fsopts->fd = open(image, O_RDWR | O_CREAT | O_TRUNC, 0666)) 476 == -1) { 477 warn("Can't open `%s' for writing", image); 478 return (-1); 479 } 480 481 /* zero image */ 482 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 483 if (fstatvfs(fsopts->fd, &sfs) == -1) { 484 #endif 485 bufsize = 8192; 486 #if HAVE_STRUCT_STATVFS_F_IOSIZE && HAVE_FSTATVFS 487 warn("can't fstatvfs `%s', using default %d byte chunk", 488 image, bufsize); 489 } else 490 bufsize = sfs.f_iosize; 491 #endif 492 bufrem = fsopts->size; 493 if (debug & DEBUG_FS_CREATE_IMAGE) 494 printf( 495 "zero-ing image `%s', %lld sectors, using %d byte chunks\n", 496 image, (long long)bufrem, bufsize); 497 if ((buf = calloc(1, bufsize)) == NULL) { 498 warn("Can't create buffer for sector"); 499 return (-1); 500 } 501 while (bufrem > 0) { 502 i = write(fsopts->fd, buf, MIN(bufsize, bufrem)); 503 if (i == -1) { 504 warn("zeroing image, %lld bytes to go", 505 (long long)bufrem); 506 free(buf); 507 return (-1); 508 } 509 bufrem -= i; 510 } 511 free(buf); 512 513 /* make the file system */ 514 if (debug & DEBUG_FS_CREATE_IMAGE) 515 printf("calling mkfs(\"%s\", ...)\n", image); 516 fs = ffs_mkfs(image, fsopts); 517 fsopts->superblock = (void *)fs; 518 if (debug & DEBUG_FS_CREATE_IMAGE) { 519 time_t t; 520 521 t = (time_t)((struct fs *)fsopts->superblock)->fs_time; 522 printf("mkfs returned %p; fs_time %s", 523 fsopts->superblock, ctime(&t)); 524 printf("fs totals: nbfree %lld, nffree %lld, nifree %lld, ndir %lld\n", 525 (long long)fs->fs_cstotal.cs_nbfree, 526 (long long)fs->fs_cstotal.cs_nffree, 527 (long long)fs->fs_cstotal.cs_nifree, 528 (long long)fs->fs_cstotal.cs_ndir); 529 } 530 531 if (fs->fs_cstotal.cs_nifree + ROOTINO < fsopts->inodes) { 532 warnx( 533 "Image file `%s' has %lld free inodes; %lld are required.", 534 image, 535 (long long)(fs->fs_cstotal.cs_nifree + ROOTINO), 536 (long long)fsopts->inodes); 537 return (-1); 538 } 539 return (fsopts->fd); 540 } 541 542 543 static void 544 ffs_size_dir(fsnode *root, fsinfo_t *fsopts) 545 { 546 struct direct tmpdir; 547 fsnode * node; 548 int curdirsize, this; 549 ffs_opt_t *ffs_opts = fsopts->fs_specific; 550 551 /* node may be NULL (empty directory) */ 552 assert(fsopts != NULL); 553 assert(ffs_opts != NULL); 554 555 if (debug & DEBUG_FS_SIZE_DIR) 556 printf("ffs_size_dir: entry: bytes %lld inodes %lld\n", 557 (long long)fsopts->size, (long long)fsopts->inodes); 558 559 #define ADDDIRENT(e) do { \ 560 tmpdir.d_namlen = strlen((e)); \ 561 this = DIRSIZ_SWAP(0, &tmpdir, 0); \ 562 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \ 563 printf("ADDDIRENT: was: %s (%d) this %d cur %d\n", \ 564 e, tmpdir.d_namlen, this, curdirsize); \ 565 if (this + curdirsize > roundup(curdirsize, DIRBLKSIZ)) \ 566 curdirsize = roundup(curdirsize, DIRBLKSIZ); \ 567 curdirsize += this; \ 568 if (debug & DEBUG_FS_SIZE_DIR_ADD_DIRENT) \ 569 printf("ADDDIRENT: now: %s (%d) this %d cur %d\n", \ 570 e, tmpdir.d_namlen, this, curdirsize); \ 571 } while (0); 572 573 /* 574 * XXX this needs to take into account extra space consumed 575 * by indirect blocks, etc. 576 */ 577 #define ADDSIZE(x) do { \ 578 fsopts->size += roundup((x), ffs_opts->fsize); \ 579 } while (0); 580 581 curdirsize = 0; 582 for (node = root; node != NULL; node = node->next) { 583 ADDDIRENT(node->name); 584 if (node == root) { /* we're at "." */ 585 assert(strcmp(node->name, ".") == 0); 586 ADDDIRENT(".."); 587 } else if ((node->inode->flags & FI_SIZED) == 0) { 588 /* don't count duplicate names */ 589 node->inode->flags |= FI_SIZED; 590 if (debug & DEBUG_FS_SIZE_DIR_NODE) 591 printf("ffs_size_dir: `%s' size %lld\n", 592 node->name, 593 (long long)node->inode->st.st_size); 594 fsopts->inodes++; 595 if (node->type == S_IFREG) 596 ADDSIZE(node->inode->st.st_size); 597 if (node->type == S_IFLNK) { 598 int slen; 599 600 slen = strlen(node->symlink) + 1; 601 if (slen >= (ffs_opts->version == 1 ? 602 MAXSYMLINKLEN_UFS1 : 603 MAXSYMLINKLEN_UFS2)) 604 ADDSIZE(slen); 605 } 606 } 607 if (node->type == S_IFDIR) 608 ffs_size_dir(node->child, fsopts); 609 } 610 ADDSIZE(curdirsize); 611 612 if (debug & DEBUG_FS_SIZE_DIR) 613 printf("ffs_size_dir: exit: size %lld inodes %lld\n", 614 (long long)fsopts->size, (long long)fsopts->inodes); 615 } 616 617 static void * 618 ffs_build_dinode1(struct ufs1_dinode *dinp, dirbuf_t *dbufp, fsnode *cur, 619 fsnode *root, fsinfo_t *fsopts) 620 { 621 int slen; 622 void *membuf; 623 624 memset(dinp, 0, sizeof(*dinp)); 625 dinp->di_mode = cur->inode->st.st_mode; 626 dinp->di_nlink = cur->inode->nlink; 627 dinp->di_size = cur->inode->st.st_size; 628 dinp->di_atime = cur->inode->st.st_atime; 629 dinp->di_mtime = cur->inode->st.st_mtime; 630 dinp->di_ctime = cur->inode->st.st_ctime; 631 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 632 dinp->di_atimensec = cur->inode->st.st_atimensec; 633 dinp->di_mtimensec = cur->inode->st.st_mtimensec; 634 dinp->di_ctimensec = cur->inode->st.st_ctimensec; 635 #endif 636 #if HAVE_STRUCT_STAT_ST_FLAGS 637 dinp->di_flags = cur->inode->st.st_flags; 638 #endif 639 #if HAVE_STRUCT_STAT_ST_GEN 640 dinp->di_gen = cur->inode->st.st_gen; 641 #endif 642 dinp->di_uid = cur->inode->st.st_uid; 643 dinp->di_gid = cur->inode->st.st_gid; 644 /* not set: di_db, di_ib, di_blocks, di_spare */ 645 646 membuf = NULL; 647 if (cur == root) { /* "."; write dirbuf */ 648 membuf = dbufp->buf; 649 dinp->di_size = dbufp->size; 650 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) { 651 dinp->di_size = 0; /* a device */ 652 dinp->di_rdev = 653 ufs_rw32(cur->inode->st.st_rdev, fsopts->needswap); 654 } else if (S_ISLNK(cur->type)) { /* symlink */ 655 slen = strlen(cur->symlink); 656 if (slen < MAXSYMLINKLEN_UFS1) { /* short link */ 657 memcpy(dinp->di_db, cur->symlink, slen); 658 } else 659 membuf = cur->symlink; 660 dinp->di_size = slen; 661 } 662 return membuf; 663 } 664 665 static void * 666 ffs_build_dinode2(struct ufs2_dinode *dinp, dirbuf_t *dbufp, fsnode *cur, 667 fsnode *root, fsinfo_t *fsopts) 668 { 669 int slen; 670 void *membuf; 671 672 memset(dinp, 0, sizeof(*dinp)); 673 dinp->di_mode = cur->inode->st.st_mode; 674 dinp->di_nlink = cur->inode->nlink; 675 dinp->di_size = cur->inode->st.st_size; 676 dinp->di_atime = cur->inode->st.st_atime; 677 dinp->di_mtime = cur->inode->st.st_mtime; 678 dinp->di_ctime = cur->inode->st.st_ctime; 679 #if HAVE_STRUCT_STAT_ST_MTIMENSEC 680 dinp->di_atimensec = cur->inode->st.st_atimensec; 681 dinp->di_mtimensec = cur->inode->st.st_mtimensec; 682 dinp->di_ctimensec = cur->inode->st.st_ctimensec; 683 #endif 684 #if HAVE_STRUCT_STAT_ST_FLAGS 685 dinp->di_flags = cur->inode->st.st_flags; 686 #endif 687 #if HAVE_STRUCT_STAT_ST_GEN 688 dinp->di_gen = cur->inode->st.st_gen; 689 #endif 690 #if HAVE_STRUCT_STAT_BIRTHTIME 691 dinp->di_birthtime = cur->inode->st.st_birthtime; 692 dinp->di_birthnsec = cur->inode->st.st_birthtimensec; 693 #endif 694 dinp->di_uid = cur->inode->st.st_uid; 695 dinp->di_gid = cur->inode->st.st_gid; 696 /* not set: di_db, di_ib, di_blocks, di_spare */ 697 698 membuf = NULL; 699 if (cur == root) { /* "."; write dirbuf */ 700 membuf = dbufp->buf; 701 dinp->di_size = dbufp->size; 702 } else if (S_ISBLK(cur->type) || S_ISCHR(cur->type)) { 703 dinp->di_size = 0; /* a device */ 704 dinp->di_rdev = 705 ufs_rw64(cur->inode->st.st_rdev, fsopts->needswap); 706 } else if (S_ISLNK(cur->type)) { /* symlink */ 707 slen = strlen(cur->symlink); 708 if (slen < MAXSYMLINKLEN_UFS2) { /* short link */ 709 memcpy(dinp->di_db, cur->symlink, slen); 710 } else 711 membuf = cur->symlink; 712 dinp->di_size = slen; 713 } 714 return membuf; 715 } 716 717 static int 718 ffs_populate_dir(const char *dir, fsnode *root, fsinfo_t *fsopts) 719 { 720 fsnode *cur; 721 dirbuf_t dirbuf; 722 union dinode din; 723 void *membuf; 724 char path[MAXPATHLEN + 1]; 725 ffs_opt_t *ffs_opts = fsopts->fs_specific; 726 727 assert(dir != NULL); 728 assert(root != NULL); 729 assert(fsopts != NULL); 730 assert(ffs_opts != NULL); 731 732 (void)memset(&dirbuf, 0, sizeof(dirbuf)); 733 734 if (debug & DEBUG_FS_POPULATE) 735 printf("ffs_populate_dir: PASS 1 dir %s node %p\n", dir, root); 736 737 /* 738 * pass 1: allocate inode numbers, build directory `file' 739 */ 740 for (cur = root; cur != NULL; cur = cur->next) { 741 if ((cur->inode->flags & FI_ALLOCATED) == 0) { 742 cur->inode->flags |= FI_ALLOCATED; 743 if (cur == root && cur->parent != NULL) 744 cur->inode->ino = cur->parent->inode->ino; 745 else { 746 cur->inode->ino = fsopts->curinode; 747 fsopts->curinode++; 748 } 749 } 750 ffs_make_dirbuf(&dirbuf, cur->name, cur, fsopts->needswap); 751 if (cur == root) { /* we're at "."; add ".." */ 752 ffs_make_dirbuf(&dirbuf, "..", 753 cur->parent == NULL ? cur : cur->parent->first, 754 fsopts->needswap); 755 root->inode->nlink++; /* count my parent's link */ 756 } else if (cur->child != NULL) 757 root->inode->nlink++; /* count my child's link */ 758 759 /* 760 * XXX possibly write file and long symlinks here, 761 * ensuring that blocks get written before inodes? 762 * otoh, this isn't a real filesystem, so who 763 * cares about ordering? :-) 764 */ 765 } 766 if (debug & DEBUG_FS_POPULATE_DIRBUF) 767 ffs_dump_dirbuf(&dirbuf, dir, fsopts->needswap); 768 769 /* 770 * pass 2: write out dirbuf, then non-directories at this level 771 */ 772 if (debug & DEBUG_FS_POPULATE) 773 printf("ffs_populate_dir: PASS 2 dir %s\n", dir); 774 for (cur = root; cur != NULL; cur = cur->next) { 775 if (cur->inode->flags & FI_WRITTEN) 776 continue; /* skip hard-linked entries */ 777 cur->inode->flags |= FI_WRITTEN; 778 779 if (snprintf(path, sizeof(path), "%s/%s", dir, cur->name) 780 >= sizeof(path)) 781 errx(1, "Pathname too long."); 782 783 if (cur->child != NULL) 784 continue; /* child creates own inode */ 785 786 /* build on-disk inode */ 787 if (ffs_opts->version == 1) 788 membuf = ffs_build_dinode1(&din.ffs1_din, &dirbuf, cur, 789 root, fsopts); 790 else 791 membuf = ffs_build_dinode2(&din.ffs2_din, &dirbuf, cur, 792 root, fsopts); 793 794 if (debug & DEBUG_FS_POPULATE_NODE) { 795 printf("ffs_populate_dir: writing ino %d, %s", 796 cur->inode->ino, inode_type(cur->type)); 797 if (cur->inode->nlink > 1) 798 printf(", nlink %d", cur->inode->nlink); 799 putchar('\n'); 800 } 801 802 if (membuf != NULL) { 803 ffs_write_file(&din, cur->inode->ino, membuf, fsopts); 804 } else if (S_ISREG(cur->type)) { 805 ffs_write_file(&din, cur->inode->ino, path, fsopts); 806 } else { 807 assert (! S_ISDIR(cur->type)); 808 ffs_write_inode(&din, cur->inode->ino, fsopts); 809 } 810 } 811 812 /* 813 * pass 3: write out sub-directories 814 */ 815 if (debug & DEBUG_FS_POPULATE) 816 printf("ffs_populate_dir: PASS 3 dir %s\n", dir); 817 for (cur = root; cur != NULL; cur = cur->next) { 818 if (cur->child == NULL) 819 continue; 820 if (snprintf(path, sizeof(path), "%s/%s", dir, cur->name) 821 >= sizeof(path)) 822 errx(1, "Pathname too long."); 823 if (! ffs_populate_dir(path, cur->child, fsopts)) 824 return (0); 825 } 826 827 if (debug & DEBUG_FS_POPULATE) 828 printf("ffs_populate_dir: DONE dir %s\n", dir); 829 830 /* cleanup */ 831 if (dirbuf.buf != NULL) 832 free(dirbuf.buf); 833 return (1); 834 } 835 836 837 static void 838 ffs_write_file(union dinode *din, uint32_t ino, void *buf, fsinfo_t *fsopts) 839 { 840 int isfile, ffd; 841 char *fbuf, *p; 842 off_t bufleft, chunk, offset; 843 ssize_t nread; 844 struct inode in; 845 struct buf * bp; 846 ffs_opt_t *ffs_opts = fsopts->fs_specific; 847 848 assert (din != NULL); 849 assert (buf != NULL); 850 assert (fsopts != NULL); 851 assert (ffs_opts != NULL); 852 853 isfile = S_ISREG(DIP(din, mode)); 854 fbuf = NULL; 855 ffd = -1; 856 p = NULL; 857 858 in.i_fs = (struct fs *)fsopts->superblock; 859 860 if (debug & DEBUG_FS_WRITE_FILE) { 861 printf( 862 "ffs_write_file: ino %u, din %p, isfile %d, %s, size %lld", 863 ino, din, isfile, inode_type(DIP(din, mode) & S_IFMT), 864 (long long)DIP(din, size)); 865 if (isfile) 866 printf(", file '%s'\n", (char *)buf); 867 else 868 printf(", buffer %p\n", buf); 869 } 870 871 in.i_number = ino; 872 in.i_size = DIP(din, size); 873 if (ffs_opts->version == 1) 874 memcpy(&in.i_din.ffs1_din, &din->ffs1_din, 875 sizeof(in.i_din.ffs1_din)); 876 else 877 memcpy(&in.i_din.ffs2_din, &din->ffs2_din, 878 sizeof(in.i_din.ffs2_din)); 879 in.i_fd = fsopts->fd; 880 881 if (DIP(din, size) == 0) 882 goto write_inode_and_leave; /* mmm, cheating */ 883 884 if (isfile) { 885 if ((fbuf = malloc(ffs_opts->bsize)) == NULL) 886 err(1, "Allocating memory for write buffer"); 887 if ((ffd = open((char *)buf, O_RDONLY, 0444)) == -1) { 888 warn("Can't open `%s' for reading", (char *)buf); 889 goto leave_ffs_write_file; 890 } 891 } else { 892 p = buf; 893 } 894 895 chunk = 0; 896 for (bufleft = DIP(din, size); bufleft > 0; bufleft -= chunk) { 897 chunk = MIN(bufleft, ffs_opts->bsize); 898 if (!isfile) 899 ; 900 else if ((nread = read(ffd, fbuf, chunk)) == -1) 901 err(EXIT_FAILURE, "Reading `%s', %lld bytes to go", 902 (char *)buf, (long long)bufleft); 903 else if (nread != chunk) 904 errx(EXIT_FAILURE, "Reading `%s', %lld bytes to go, " 905 "read %zd bytes, expected %ju bytes, does " 906 "metalog size= attribute mismatch source size?", 907 (char *)buf, (long long)bufleft, nread, 908 (uintmax_t)chunk); 909 else 910 p = fbuf; 911 offset = DIP(din, size) - bufleft; 912 if (debug & DEBUG_FS_WRITE_FILE_BLOCK) 913 printf( 914 "ffs_write_file: write %p offset %lld size %lld left %lld\n", 915 p, (long long)offset, 916 (long long)chunk, (long long)bufleft); 917 /* 918 * XXX if holey support is desired, do the check here 919 * 920 * XXX might need to write out last bit in fragroundup 921 * sized chunk. however, ffs_balloc() handles this for us 922 */ 923 errno = ffs_balloc(&in, offset, chunk, &bp); 924 bad_ffs_write_file: 925 if (errno != 0) 926 err(1, 927 "Writing inode %d (%s), bytes %lld + %lld", 928 ino, 929 isfile ? (char *)buf : 930 inode_type(DIP(din, mode) & S_IFMT), 931 (long long)offset, (long long)chunk); 932 memcpy(bp->b_data, p, chunk); 933 errno = bwrite(bp); 934 if (errno != 0) 935 goto bad_ffs_write_file; 936 brelse(bp); 937 if (!isfile) 938 p += chunk; 939 } 940 941 write_inode_and_leave: 942 ffs_write_inode(&in.i_din, in.i_number, fsopts); 943 944 leave_ffs_write_file: 945 if (fbuf) 946 free(fbuf); 947 if (ffd != -1) 948 close(ffd); 949 } 950 951 952 static void 953 ffs_dump_dirbuf(dirbuf_t *dbuf, const char *dir, int needswap) 954 { 955 doff_t i; 956 struct direct *de; 957 uint16_t reclen; 958 959 assert (dbuf != NULL); 960 assert (dir != NULL); 961 printf("ffs_dump_dirbuf: dir %s size %d cur %d\n", 962 dir, dbuf->size, dbuf->cur); 963 964 for (i = 0; i < dbuf->size; ) { 965 de = (struct direct *)(dbuf->buf + i); 966 reclen = ufs_rw16(de->d_reclen, needswap); 967 printf( 968 " inode %4d %7s offset %4d reclen %3d namlen %3d name %s\n", 969 ufs_rw32(de->d_ino, needswap), 970 inode_type(DTTOIF(de->d_type)), i, reclen, 971 de->d_namlen, de->d_name); 972 i += reclen; 973 assert(reclen > 0); 974 } 975 } 976 977 static void 978 ffs_make_dirbuf(dirbuf_t *dbuf, const char *name, fsnode *node, int needswap) 979 { 980 struct direct de, *dp; 981 uint16_t llen, reclen; 982 u_char *newbuf; 983 984 assert (dbuf != NULL); 985 assert (name != NULL); 986 assert (node != NULL); 987 /* create direct entry */ 988 (void)memset(&de, 0, sizeof(de)); 989 de.d_ino = ufs_rw32(node->inode->ino, needswap); 990 de.d_type = IFTODT(node->type); 991 de.d_namlen = (uint8_t)strlen(name); 992 strcpy(de.d_name, name); 993 reclen = DIRSIZ_SWAP(0, &de, needswap); 994 de.d_reclen = ufs_rw16(reclen, needswap); 995 996 dp = (struct direct *)(dbuf->buf + dbuf->cur); 997 llen = 0; 998 if (dp != NULL) 999 llen = DIRSIZ_SWAP(0, dp, needswap); 1000 1001 if (debug & DEBUG_FS_MAKE_DIRBUF) 1002 printf( 1003 "ffs_make_dirbuf: dbuf siz %d cur %d lastlen %d\n" 1004 " ino %d type %d reclen %d namlen %d name %.30s\n", 1005 dbuf->size, dbuf->cur, llen, 1006 ufs_rw32(de.d_ino, needswap), de.d_type, reclen, 1007 de.d_namlen, de.d_name); 1008 1009 if (reclen + dbuf->cur + llen > roundup(dbuf->size, DIRBLKSIZ)) { 1010 if (debug & DEBUG_FS_MAKE_DIRBUF) 1011 printf("ffs_make_dirbuf: growing buf to %d\n", 1012 dbuf->size + DIRBLKSIZ); 1013 if ((newbuf = realloc(dbuf->buf, dbuf->size + DIRBLKSIZ)) == NULL) 1014 err(1, "Allocating memory for directory buffer"); 1015 dbuf->buf = newbuf; 1016 dbuf->size += DIRBLKSIZ; 1017 memset(dbuf->buf + dbuf->size - DIRBLKSIZ, 0, DIRBLKSIZ); 1018 dbuf->cur = dbuf->size - DIRBLKSIZ; 1019 } else if (dp) { /* shrink end of previous */ 1020 dp->d_reclen = ufs_rw16(llen,needswap); 1021 dbuf->cur += llen; 1022 } 1023 dp = (struct direct *)(dbuf->buf + dbuf->cur); 1024 memcpy(dp, &de, reclen); 1025 dp->d_reclen = ufs_rw16(dbuf->size - dbuf->cur, needswap); 1026 } 1027 1028 /* 1029 * cribbed from sys/ufs/ffs/ffs_alloc.c 1030 */ 1031 static void 1032 ffs_write_inode(union dinode *dp, uint32_t ino, const fsinfo_t *fsopts) 1033 { 1034 char *buf; 1035 struct ufs1_dinode *dp1; 1036 struct ufs2_dinode *dp2, *dip; 1037 struct cg *cgp; 1038 struct fs *fs; 1039 int cg, cgino, i; 1040 daddr_t d; 1041 char sbbuf[FFS_MAXBSIZE]; 1042 int32_t initediblk; 1043 ffs_opt_t *ffs_opts = fsopts->fs_specific; 1044 1045 assert (dp != NULL); 1046 assert (ino > 0); 1047 assert (fsopts != NULL); 1048 assert (ffs_opts != NULL); 1049 1050 fs = (struct fs *)fsopts->superblock; 1051 cg = ino_to_cg(fs, ino); 1052 cgino = ino % fs->fs_ipg; 1053 if (debug & DEBUG_FS_WRITE_INODE) 1054 printf("ffs_write_inode: din %p ino %u cg %d cgino %d\n", 1055 dp, ino, cg, cgino); 1056 1057 ffs_rdfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf, 1058 fsopts); 1059 cgp = (struct cg *)sbbuf; 1060 if (!cg_chkmagic_swap(cgp, fsopts->needswap)) 1061 errx(1, "ffs_write_inode: cg %d: bad magic number", cg); 1062 1063 assert (isclr(cg_inosused_swap(cgp, fsopts->needswap), cgino)); 1064 1065 buf = malloc(fs->fs_bsize); 1066 if (buf == NULL) 1067 errx(1, "ffs_write_inode: cg %d: can't alloc inode block", cg); 1068 1069 dp1 = (struct ufs1_dinode *)buf; 1070 dp2 = (struct ufs2_dinode *)buf; 1071 1072 if (fs->fs_cstotal.cs_nifree == 0) 1073 errx(1, "ffs_write_inode: fs out of inodes for ino %u", 1074 ino); 1075 if (fs->fs_cs(fs, cg).cs_nifree == 0) 1076 errx(1, 1077 "ffs_write_inode: cg %d out of inodes for ino %u", 1078 cg, ino); 1079 setbit(cg_inosused_swap(cgp, fsopts->needswap), cgino); 1080 ufs_add32(cgp->cg_cs.cs_nifree, -1, fsopts->needswap); 1081 fs->fs_cstotal.cs_nifree--; 1082 fs->fs_cs(fs, cg).cs_nifree--; 1083 if (S_ISDIR(DIP(dp, mode))) { 1084 ufs_add32(cgp->cg_cs.cs_ndir, 1, fsopts->needswap); 1085 fs->fs_cstotal.cs_ndir++; 1086 fs->fs_cs(fs, cg).cs_ndir++; 1087 } 1088 1089 /* 1090 * Initialize inode blocks on the fly for UFS2. 1091 */ 1092 initediblk = ufs_rw32(cgp->cg_initediblk, fsopts->needswap); 1093 if (ffs_opts->version == 2 && cgino + INOPB(fs) > initediblk && 1094 initediblk < ufs_rw32(cgp->cg_niblk, fsopts->needswap)) { 1095 memset(buf, 0, fs->fs_bsize); 1096 dip = (struct ufs2_dinode *)buf; 1097 srandom(time(NULL)); 1098 for (i = 0; i < INOPB(fs); i++) { 1099 dip->di_gen = random() / 2 + 1; 1100 dip++; 1101 } 1102 ffs_wtfs(fsbtodb(fs, ino_to_fsba(fs, 1103 cg * fs->fs_ipg + initediblk)), 1104 fs->fs_bsize, buf, fsopts); 1105 initediblk += INOPB(fs); 1106 cgp->cg_initediblk = ufs_rw32(initediblk, fsopts->needswap); 1107 } 1108 1109 1110 ffs_wtfs(fsbtodb(fs, cgtod(fs, cg)), (int)fs->fs_cgsize, &sbbuf, 1111 fsopts); 1112 1113 /* now write inode */ 1114 d = fsbtodb(fs, ino_to_fsba(fs, ino)); 1115 ffs_rdfs(d, fs->fs_bsize, buf, fsopts); 1116 if (fsopts->needswap) { 1117 if (ffs_opts->version == 1) 1118 ffs_dinode1_swap(&dp->ffs1_din, 1119 &dp1[ino_to_fsbo(fs, ino)]); 1120 else 1121 ffs_dinode2_swap(&dp->ffs2_din, 1122 &dp2[ino_to_fsbo(fs, ino)]); 1123 } else { 1124 if (ffs_opts->version == 1) 1125 dp1[ino_to_fsbo(fs, ino)] = dp->ffs1_din; 1126 else 1127 dp2[ino_to_fsbo(fs, ino)] = dp->ffs2_din; 1128 } 1129 ffs_wtfs(d, fs->fs_bsize, buf, fsopts); 1130 free(buf); 1131 } 1132 1133 void 1134 panic(const char *fmt, ...) 1135 { 1136 va_list ap; 1137 1138 va_start(ap, fmt); 1139 vwarnx(fmt, ap); 1140 va_end(ap); 1141 exit(1); 1142 } 1143