bfs.c revision 1.12
1 /* $NetBSD: bfs.c,v 1.12 2009/04/26 12:41:59 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by UCHIYAMA Yasushi. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 34 __KERNEL_RCSID(0, "$NetBSD: bfs.c,v 1.12 2009/04/26 12:41:59 uch Exp $"); 35 #define BFS_DEBUG 36 37 #include <sys/param.h> 38 #include <sys/kernel.h> 39 #include <sys/types.h> 40 #include <sys/systm.h> 41 #include <sys/errno.h> 42 #include <sys/malloc.h> 43 #include <sys/time.h> 44 45 #ifdef _KERNEL 46 MALLOC_JUSTDEFINE(M_BFS, "sysvbfs core", "sysvbfs internal structures"); 47 #define __MALLOC(s, t, f) malloc(s, t, f) 48 #define __FREE(a, s, t) free(a, t) 49 #elif defined _STANDALONE 50 #include <lib/libsa/stand.h> 51 #include <lib/libkern/libkern.h> 52 #define __MALLOC(s, t, f) alloc(s) 53 #define __FREE(a, s, t) dealloc(a, s) 54 #else 55 #include "local.h" 56 #define __MALLOC(s, t, f) malloc(s) 57 #define __FREE(a, s, t) free(a) 58 #endif 59 #include <fs/sysvbfs/bfs.h> 60 61 #ifdef BFS_DEBUG 62 #define DPRINTF(on, fmt, args...) if (on) printf(fmt, ##args) 63 #else 64 #define DPRINTF(arg...) ((void)0) 65 #endif 66 67 #define ROUND_SECTOR(x) (((x) + 511) & ~511) 68 #define TRUNC_SECTOR(x) ((x) & ~511) 69 70 #define STATIC 71 72 STATIC int bfs_init_superblock(struct bfs *, int, size_t *); 73 STATIC int bfs_init_inode(struct bfs *, uint8_t *, size_t *); 74 STATIC int bfs_init_dirent(struct bfs *, uint8_t *); 75 76 /* super block ops. */ 77 STATIC bool bfs_superblock_valid(const struct bfs_super_block *); 78 STATIC bool bfs_writeback_dirent(const struct bfs *, struct bfs_dirent *, 79 bool); 80 STATIC bool bfs_writeback_inode(const struct bfs *, struct bfs_inode *); 81 82 int 83 bfs_init2(struct bfs **bfsp, int bfs_sector, struct sector_io_ops *io, 84 bool debug) 85 { 86 struct bfs *bfs; 87 size_t memsize; 88 uint8_t *p; 89 int err; 90 91 /* 1. */ 92 DPRINTF(debug, "bfs sector = %d\n", bfs_sector); 93 if ((bfs = (void *)__MALLOC(sizeof(struct bfs), M_BFS, M_NOWAIT)) == 0) 94 return ENOMEM; 95 memset(bfs, 0, sizeof *bfs); 96 bfs->io = io; 97 bfs->debug = debug; 98 99 /* 2. */ 100 if ((err = bfs_init_superblock(bfs, bfs_sector, &memsize)) != 0) { 101 bfs_fini(bfs); 102 return err; 103 } 104 DPRINTF(debug, "bfs super block + inode area = %zd\n", memsize); 105 bfs->super_block_size = memsize; 106 if ((p = (void *)__MALLOC(memsize, M_BFS, M_NOWAIT)) == 0) { 107 bfs_fini(bfs); 108 return ENOMEM; 109 } 110 /* 3. */ 111 if ((err = bfs_init_inode(bfs, p, &memsize)) != 0) { 112 bfs_fini(bfs); 113 return err; 114 } 115 DPRINTF(debug, "bfs dirent area = %zd\n", memsize); 116 bfs->dirent_size = memsize; 117 if ((p = (void *)__MALLOC(memsize, M_BFS, M_NOWAIT)) == 0) { 118 bfs_fini(bfs); 119 return ENOMEM; 120 } 121 /* 4. */ 122 if ((err = bfs_init_dirent(bfs, p)) != 0) { 123 bfs_fini(bfs); 124 return err; 125 } 126 127 #ifdef BFS_DEBUG 128 bfs_dump(bfs); 129 #endif 130 *bfsp = bfs; 131 132 return 0; 133 } 134 135 void 136 bfs_fini(struct bfs *bfs) 137 { 138 139 if (bfs == 0) 140 return; 141 if (bfs->super_block) 142 __FREE(bfs->super_block, bfs->super_block_size, M_BFS); 143 if (bfs->dirent) 144 __FREE(bfs->dirent, bfs->dirent_size, M_BFS); 145 __FREE(bfs, sizeof(struct bfs), M_BFS); 146 } 147 148 STATIC int 149 bfs_init_superblock(struct bfs *bfs, int bfs_sector, size_t *required_memory) 150 { 151 struct bfs_super_block super; 152 153 bfs->start_sector = bfs_sector; 154 155 /* Read super block */ 156 if (!bfs->io->read(bfs->io, (uint8_t *)&super, bfs_sector)) 157 return EIO; 158 159 if (!bfs_superblock_valid(&super)) 160 return EINVAL; 161 162 /* i-node table size */ 163 bfs->data_start = super.header.data_start_byte; 164 bfs->data_end = super.header.data_end_byte; 165 166 bfs->max_inode = (bfs->data_start - sizeof(struct bfs_super_block)) / 167 sizeof(struct bfs_inode); 168 169 *required_memory = ROUND_SECTOR(bfs->data_start); 170 171 return 0; 172 } 173 174 STATIC int 175 bfs_init_inode(struct bfs *bfs, uint8_t *p, size_t *required_memory) 176 { 177 struct bfs_inode *inode, *root_inode; 178 int i; 179 180 if (!bfs->io->read_n(bfs->io, p, bfs->start_sector, 181 bfs->data_start >> DEV_BSHIFT)) 182 return EIO; 183 184 bfs->super_block = (struct bfs_super_block *)p; 185 bfs->inode = (struct bfs_inode *)(p + sizeof(struct bfs_super_block)); 186 p += bfs->data_start; 187 188 bfs->n_inode = 0; 189 inode = bfs->inode; 190 root_inode = 0; 191 for (i = 0; i < bfs->max_inode; i++, inode++) { 192 if (inode->number != 0) { 193 bfs->n_inode++; 194 if (inode->number == BFS_ROOT_INODE) 195 root_inode = inode; 196 } 197 } 198 DPRINTF(bfs->debug, "inode: %d/%d\n", bfs->n_inode, bfs->max_inode); 199 200 if (root_inode == 0) { 201 DPRINTF(bfs->debug, "no root directory.\n"); 202 return ENOTDIR; 203 } 204 /* dirent table size */ 205 DPRINTF(bfs->debug, "root inode: %d-%d\n", root_inode->start_sector, 206 root_inode->end_sector); 207 bfs->root_inode = root_inode; 208 209 *required_memory = (root_inode->end_sector - 210 root_inode->start_sector + 1) << DEV_BSHIFT; 211 212 return 0; 213 } 214 215 STATIC int 216 bfs_init_dirent(struct bfs *bfs, uint8_t *p) 217 { 218 struct bfs_dirent *file; 219 struct bfs_inode *inode = bfs->root_inode; 220 int i, n; 221 222 n = inode->end_sector - inode->start_sector + 1; 223 224 if (!bfs->io->read_n(bfs->io, p, 225 bfs->start_sector + inode->start_sector, n)) 226 return EIO; 227 228 bfs->dirent = (struct bfs_dirent *)p; 229 bfs->max_dirent = (n << DEV_BSHIFT) / sizeof(struct bfs_dirent); 230 231 file = bfs->dirent; 232 bfs->n_dirent = 0; 233 for (i = 0; i < bfs->max_dirent; i++, file++) 234 if (file->inode != 0) 235 bfs->n_dirent++; 236 237 DPRINTF(bfs->debug, "dirent: %d/%d\n", bfs->n_dirent, bfs->max_dirent); 238 239 return 0; 240 } 241 242 int 243 bfs_file_read(const struct bfs *bfs, const char *fname, void *buf, size_t bufsz, 244 size_t *read_size) 245 { 246 int start, end, n; 247 size_t sz; 248 uint8_t tmpbuf[DEV_BSIZE]; 249 uint8_t *p; 250 251 if (!bfs_file_lookup(bfs, fname, &start, &end, &sz)) 252 return ENOENT; 253 254 if (sz > bufsz) 255 return ENOMEM; 256 257 p = buf; 258 n = end - start; 259 if (!bfs->io->read_n(bfs->io, p, start, n)) 260 return EIO; 261 /* last sector */ 262 n *= DEV_BSIZE; 263 if (!bfs->io->read(bfs->io, tmpbuf, end)) 264 return EIO; 265 memcpy(p + n, tmpbuf, sz - n); 266 267 if (read_size) 268 *read_size = sz; 269 270 return 0; 271 } 272 273 int 274 bfs_file_write(struct bfs *bfs, const char *fname, void *buf, 275 size_t bufsz) 276 { 277 struct bfs_fileattr attr; 278 struct bfs_dirent *dirent; 279 char name[BFS_FILENAME_MAXLEN]; 280 int err; 281 282 strncpy(name, fname, BFS_FILENAME_MAXLEN); 283 284 if (bfs_dirent_lookup_by_name(bfs, name, &dirent)) { 285 struct bfs_inode *inode; 286 if (!bfs_inode_lookup(bfs, dirent->inode, &inode)) { 287 DPRINTF(bfs->debug, "%s: dirent found, but inode " 288 "not found. inconsistent filesystem.\n", 289 __func__); 290 return ENOENT; 291 } 292 attr = inode->attr; /* copy old attribute */ 293 bfs_file_delete(bfs, name); 294 if ((err = bfs_file_create(bfs, name, buf, bufsz, &attr)) != 0) 295 return err; 296 } else { 297 memset(&attr, 0xff, sizeof attr); /* Set VNOVAL all */ 298 #ifdef _KERNEL 299 attr.atime = time_second; 300 attr.ctime = time_second; 301 attr.mtime = time_second; 302 #endif 303 if ((err = bfs_file_create(bfs, name, buf, bufsz, &attr)) != 0) 304 return err; 305 } 306 307 return 0; 308 } 309 310 int 311 bfs_file_delete(struct bfs *bfs, const char *fname) 312 { 313 struct bfs_inode *inode; 314 struct bfs_dirent *dirent; 315 316 if (!bfs_dirent_lookup_by_name(bfs, fname, &dirent)) 317 return ENOENT; 318 319 if (!bfs_inode_lookup(bfs, dirent->inode, &inode)) 320 return ENOENT; 321 322 memset(dirent, 0, sizeof *dirent); 323 memset(inode, 0, sizeof *inode); 324 bfs->n_inode--; 325 bfs->n_dirent--; 326 327 bfs_writeback_dirent(bfs, dirent, false); 328 bfs_writeback_inode(bfs, inode); 329 DPRINTF(bfs->debug, "%s: \"%s\" deleted.\n", __func__, fname); 330 331 return 0; 332 } 333 334 int 335 bfs_file_rename(struct bfs *bfs, const char *from_name, const char *to_name) 336 { 337 struct bfs_dirent *dirent; 338 int err = 0; 339 340 if (strlen(to_name) > BFS_FILENAME_MAXLEN) { 341 err = ENAMETOOLONG; 342 goto out; 343 } 344 if (!bfs_dirent_lookup_by_name(bfs, from_name, &dirent)) { 345 err = ENOENT; 346 goto out; 347 } 348 349 bfs_file_delete(bfs, to_name); 350 strncpy(dirent->name, to_name, BFS_FILENAME_MAXLEN); 351 bfs_writeback_dirent(bfs, dirent, false); 352 353 out: 354 DPRINTF(bfs->debug, "%s: \"%s\" -> \"%s\" error=%d.\n", __func__, 355 from_name, to_name, err); 356 357 return err; 358 } 359 360 int 361 bfs_file_create(struct bfs *bfs, const char *fname, void *buf, size_t bufsz, 362 const struct bfs_fileattr *attr) 363 { 364 struct bfs_inode *inode; 365 struct bfs_dirent *file; 366 int i, j, n, start; 367 uint8_t *p, tmpbuf[DEV_BSIZE]; 368 int err; 369 370 /* Find free i-node and data block */ 371 if ((err = bfs_inode_alloc(bfs, &inode, &j, &start)) != 0) 372 return err; 373 374 /* File size (unit block) */ 375 n = (ROUND_SECTOR(bufsz) >> DEV_BSHIFT) - 1; 376 if (n < 0) /* bufsz == 0 */ 377 n = 0; 378 379 if ((start + n) * DEV_BSIZE >= bfs->data_end) { 380 DPRINTF(bfs->debug, "disk full.\n"); 381 return ENOSPC; 382 } 383 384 /* Find free dirent */ 385 for (file = bfs->dirent, i = 0; i < bfs->max_dirent; i++, file++) 386 if (file->inode == 0) 387 break; 388 if (i == bfs->max_dirent) { 389 DPRINTF(bfs->debug, "dirent full.\n"); 390 return ENOSPC; 391 } 392 393 /* i-node */ 394 memset(inode, 0, sizeof *inode); 395 inode->number = j; 396 inode->start_sector = start; 397 inode->end_sector = start + n; 398 inode->eof_offset_byte = start * DEV_BSIZE + bufsz - 1; 399 /* i-node attribute */ 400 inode->attr.type = 1; 401 inode->attr.mode = 0; 402 inode->attr.nlink = 1; 403 bfs_inode_set_attr(bfs, inode, attr); 404 405 /* Dirent */ 406 memset(file, 0, sizeof *file); 407 file->inode = inode->number; 408 strncpy(file->name, fname, BFS_FILENAME_MAXLEN); 409 410 DPRINTF(bfs->debug, "%s: start %d end %d\n", __func__, 411 inode->start_sector, inode->end_sector); 412 413 if (buf != 0) { 414 p = (uint8_t *)buf; 415 /* Data block */ 416 n = 0; 417 for (i = inode->start_sector; i < inode->end_sector; i++) { 418 if (!bfs->io->write(bfs->io, p, bfs->start_sector + i)) 419 return EIO; 420 p += DEV_BSIZE; 421 n += DEV_BSIZE; 422 } 423 /* last sector */ 424 memset(tmpbuf, 0, DEV_BSIZE); 425 memcpy(tmpbuf, p, bufsz - n); 426 if (!bfs->io->write(bfs->io, tmpbuf, bfs->start_sector + i)) 427 return EIO; 428 } 429 /* Update */ 430 bfs->n_inode++; 431 bfs->n_dirent++; 432 bfs_writeback_dirent(bfs, file, true); 433 bfs_writeback_inode(bfs, inode); 434 435 return 0; 436 } 437 438 STATIC bool 439 bfs_writeback_dirent(const struct bfs *bfs, struct bfs_dirent *dir, 440 bool create) 441 { 442 struct bfs_dirent *dir_base = bfs->dirent; 443 struct bfs_inode *root_inode = bfs->root_inode; 444 uintptr_t eof; 445 int i; 446 447 i = ((dir - dir_base) * sizeof *dir) >> DEV_BSHIFT; 448 449 eof = (uintptr_t)(dir + 1) - 1; 450 eof = eof - (uintptr_t)dir_base + 451 (root_inode->start_sector << DEV_BSHIFT); 452 453 /* update root directory inode */ 454 #if 0 455 printf("eof new=%d old=%d\n", eof, root_inode->eof_offset_byte); 456 #endif 457 if (create) { 458 if (eof > root_inode->eof_offset_byte) { 459 root_inode->eof_offset_byte = eof; 460 } 461 } else { 462 /* delete the last entry */ 463 if (eof == root_inode->eof_offset_byte) { 464 root_inode->eof_offset_byte = eof - sizeof *dir; 465 } 466 } 467 bfs_writeback_inode(bfs, root_inode); 468 469 /* update dirent */ 470 return bfs->io->write(bfs->io, (uint8_t *)dir_base + (i << DEV_BSHIFT), 471 bfs->start_sector + bfs->root_inode->start_sector + i); 472 } 473 474 STATIC bool 475 bfs_writeback_inode(const struct bfs *bfs, struct bfs_inode *inode) 476 { 477 struct bfs_inode *inode_base = bfs->inode; 478 int i; 479 480 i = ((inode - inode_base) * sizeof *inode) >> DEV_BSHIFT; 481 482 return bfs->io->write(bfs->io, 483 (uint8_t *)inode_base + (i << DEV_BSHIFT), 484 bfs->start_sector + 1/*super block*/ + i); 485 } 486 487 bool 488 bfs_file_lookup(const struct bfs *bfs, const char *fname, int *start, int *end, 489 size_t *size) 490 { 491 struct bfs_inode *inode; 492 struct bfs_dirent *dirent; 493 494 if (!bfs_dirent_lookup_by_name(bfs, fname, &dirent)) 495 return false; 496 if (!bfs_inode_lookup(bfs, dirent->inode, &inode)) 497 return false; 498 499 if (start) 500 *start = inode->start_sector + bfs->start_sector; 501 if (end) 502 *end = inode->end_sector + bfs->start_sector; 503 if (size) 504 *size = bfs_file_size(inode); 505 506 DPRINTF(bfs->debug, "%s: %d + %d -> %d (%zd)\n", 507 fname, bfs->start_sector, inode->start_sector, 508 inode->end_sector, *size); 509 510 return true; 511 } 512 513 bool 514 bfs_dirent_lookup_by_inode(const struct bfs *bfs, int inode, 515 struct bfs_dirent **dirent) 516 { 517 struct bfs_dirent *file; 518 int i; 519 520 for (file = bfs->dirent, i = 0; i < bfs->max_dirent; i++, file++) 521 if (file->inode == inode) 522 break; 523 524 if (i == bfs->max_dirent) 525 return false; 526 527 *dirent = file; 528 529 return true; 530 } 531 532 bool 533 bfs_dirent_lookup_by_name(const struct bfs *bfs, const char *fname, 534 struct bfs_dirent **dirent) 535 { 536 struct bfs_dirent *file; 537 int i; 538 539 for (file = bfs->dirent, i = 0; i < bfs->max_dirent; i++, file++) 540 if ((file->inode != 0) && 541 (strncmp(file->name, fname, BFS_FILENAME_MAXLEN) ==0)) 542 break; 543 544 if (i == bfs->max_dirent) 545 return false; 546 547 *dirent = file; 548 549 return true; 550 } 551 552 bool 553 bfs_inode_lookup(const struct bfs *bfs, ino_t n, struct bfs_inode **iinode) 554 { 555 struct bfs_inode *inode; 556 int i; 557 558 for (inode = bfs->inode, i = 0; i < bfs->max_inode; i++, inode++) 559 if (inode->number == n) 560 break; 561 562 if (i == bfs->max_inode) 563 return false; 564 565 *iinode = inode; 566 567 return true; 568 } 569 570 size_t 571 bfs_file_size(const struct bfs_inode *inode) 572 { 573 574 return inode->eof_offset_byte - inode->start_sector * DEV_BSIZE + 1; 575 } 576 577 STATIC int 578 bfs_inode_alloc(const struct bfs *bfs, struct bfs_inode **free_inode, 579 int *free_inode_number, int *free_block) 580 { 581 struct bfs_inode *jnode, *inode; 582 int i, j, start; 583 584 j = start = 0; 585 inode = bfs->inode; 586 jnode = 0; 587 588 for (i = BFS_ROOT_INODE; i < bfs->max_inode; i++, inode++) { 589 /* Steal i-node # */ 590 if (j == 0) 591 j = i; 592 593 /* Get free i-node */ 594 if (jnode == 0 && (inode->number == 0)) 595 jnode = inode; 596 597 /* Get free i-node # and data block */ 598 if (inode->number != 0) { 599 if (inode->end_sector > start) 600 start = inode->end_sector; 601 if (inode->number == j) 602 j = 0; /* conflict */ 603 } 604 } 605 start++; 606 607 if (jnode == 0) { 608 DPRINTF(bfs->debug, "i-node full.\n"); 609 return ENOSPC; 610 } 611 612 if (start * DEV_BSIZE >= bfs->data_end) { 613 DPRINTF(bfs->debug, "data block full.\n"); 614 /* compaction here ? */ 615 return ENOSPC; 616 } 617 if (free_inode) 618 *free_inode = jnode; 619 if (free_inode_number) 620 *free_inode_number = j; 621 if (free_block) 622 *free_block = start; 623 624 return 0; 625 } 626 627 void 628 bfs_inode_set_attr(const struct bfs *bfs, struct bfs_inode *inode, 629 const struct bfs_fileattr *from) 630 { 631 struct bfs_fileattr *to = &inode->attr; 632 633 if (from != NULL) { 634 if (from->uid != (uid_t)-1) 635 to->uid = from->uid; 636 if (from->gid != (uid_t)-1) 637 to->gid = from->gid; 638 if (from->mode != (mode_t)-1) 639 to->mode = from->mode; 640 if (from->atime != -1) 641 to->atime = from->atime; 642 if (from->ctime != -1) 643 to->ctime = from->ctime; 644 if (from->mtime != -1) 645 to->mtime = from->mtime; 646 } 647 bfs_writeback_inode(bfs, inode); 648 } 649 650 STATIC bool 651 bfs_superblock_valid(const struct bfs_super_block *super) 652 { 653 654 return super->header.magic == BFS_MAGIC; 655 } 656 657 bool 658 bfs_dump(const struct bfs *bfs) 659 { 660 const struct bfs_super_block_header *h; 661 const struct bfs_compaction *compaction; 662 const struct bfs_inode *inode; 663 struct bfs_dirent *file; 664 int i, j, s, e; 665 size_t bytes; 666 667 if (!bfs_superblock_valid(bfs->super_block)) { 668 DPRINTF(bfs->debug, "invalid bfs super block.\n"); 669 return false; 670 } 671 h = &bfs->super_block->header; 672 compaction = &bfs->super_block->compaction; 673 674 DPRINTF(bfs->debug, "super block %zdbyte, inode %zdbyte, dirent %zdbyte\n", 675 sizeof *bfs->super_block, sizeof *inode, sizeof *file); 676 677 DPRINTF(bfs->debug, "magic=%x\n", h->magic); 678 DPRINTF(bfs->debug, "data_start_byte=0x%x\n", h->data_start_byte); 679 DPRINTF(bfs->debug, "data_end_byte=0x%x\n", h->data_end_byte); 680 DPRINTF(bfs->debug, "from=%#x\n", compaction->from); 681 DPRINTF(bfs->debug, "to=%#x\n", compaction->to); 682 DPRINTF(bfs->debug, "from_backup=%#x\n", compaction->from_backup); 683 DPRINTF(bfs->debug, "to_backup=%#x\n", compaction->to_backup); 684 DPRINTF(bfs->debug, "fsname=%s\n", bfs->super_block->fsname); 685 DPRINTF(bfs->debug, "volume=%s\n", bfs->super_block->volume); 686 687 /* inode list */ 688 DPRINTF(bfs->debug, "[inode index list]\n"); 689 for (inode = bfs->inode, i = j = 0; i < bfs->max_inode; inode++, i++) { 690 if (inode->number != 0) { 691 const struct bfs_fileattr *attr = &inode->attr; 692 DPRINTF(bfs->debug, "%3d %8d %8d %8d (%d) ", 693 inode->number, 694 inode->eof_offset_byte - 695 (inode->start_sector * DEV_BSIZE) + 1,/* file size*/ 696 inode->start_sector, 697 inode->end_sector, i); 698 699 DPRINTF(bfs->debug, "%d %d %d %d %d %08x %08x %08x\n", 700 attr->type, attr->mode, attr->uid, attr->gid, 701 attr->nlink, attr->atime, attr->mtime, attr->ctime); 702 j++; 703 } 704 } 705 if (j != bfs->n_inode) { 706 DPRINTF(bfs->debug, "inconsistent cached data. (i-node)\n"); 707 return false; 708 } 709 DPRINTF(bfs->debug, "total %d i-node.\n", j); 710 711 /* file list */ 712 DPRINTF(bfs->debug, "[dirent index list]\n"); 713 DPRINTF(bfs->debug, "%d file entries.\n", bfs->max_dirent); 714 file = bfs->dirent; 715 for (i = j = 0; i < bfs->max_dirent; i++, file++) { 716 if (file->inode != 0) { 717 if (bfs_file_lookup(bfs, file->name, &s, &e, &bytes)) 718 DPRINTF(bfs->debug, "%3d %14s %8d %8d %8zd\n", 719 file->inode, file->name, s, e, bytes); 720 j++; 721 } 722 } 723 if (j != bfs->n_dirent) { 724 DPRINTF(bfs->debug, "inconsistent cached data. (dirent)\n"); 725 return false; 726 } 727 DPRINTF(bfs->debug, "%d files.\n", j); 728 729 return true; 730 } 731
Indexes created Tue Sep 23 20:09:58 GMT 2025