1 #include <common.h> 2 3 #include <malloc.h> 4 #include <linux/stat.h> 5 #include <linux/time.h> 6 7 #include <jffs2/jffs2.h> 8 #include <jffs2/jffs2_1pass.h> 9 #include <nand.h> 10 11 #include "jffs2_nand_private.h" 12 13 #define NODE_CHUNK 1024 /* size of memory allocation chunk in b_nodes */ 14 15 /* Debugging switches */ 16 #undef DEBUG_DIRENTS /* print directory entry list after scan */ 17 #undef DEBUG_FRAGMENTS /* print fragment list after scan */ 18 #undef DEBUG /* enable debugging messages */ 19 20 #ifdef DEBUG 21 # define DEBUGF(fmt,args...) printf(fmt ,##args) 22 #else 23 # define DEBUGF(fmt,args...) 24 #endif 25 26 static struct mtd_info *mtd; 27 28 /* Compression names */ 29 static char *compr_names[] = { 30 "NONE", 31 "ZERO", 32 "RTIME", 33 "RUBINMIPS", 34 "COPY", 35 "DYNRUBIN", 36 "ZLIB", 37 #if defined(CONFIG_JFFS2_LZO) 38 "LZO", 39 #endif 40 }; 41 42 /* Spinning wheel */ 43 static char spinner[] = { '|', '/', '-', '\\' }; 44 45 /* Memory management */ 46 struct mem_block { 47 unsigned index; 48 struct mem_block *next; 49 char nodes[0]; 50 }; 51 52 static void 53 free_nodes(struct b_list *list) 54 { 55 while (list->listMemBase != NULL) { 56 struct mem_block *next = list->listMemBase->next; 57 free(list->listMemBase); 58 list->listMemBase = next; 59 } 60 } 61 62 static struct b_node * 63 add_node(struct b_list *list, int size) 64 { 65 u32 index = 0; 66 struct mem_block *memBase; 67 struct b_node *b; 68 69 memBase = list->listMemBase; 70 if (memBase != NULL) 71 index = memBase->index; 72 73 if (memBase == NULL || index >= NODE_CHUNK) { 74 /* we need more space before we continue */ 75 memBase = mmalloc(sizeof(struct mem_block) + NODE_CHUNK * size); 76 if (memBase == NULL) { 77 putstr("add_node: malloc failed\n"); 78 return NULL; 79 } 80 memBase->next = list->listMemBase; 81 index = 0; 82 } 83 /* now we have room to add it. */ 84 b = (struct b_node *)&memBase->nodes[size * index]; 85 index ++; 86 87 memBase->index = index; 88 list->listMemBase = memBase; 89 list->listCount++; 90 return b; 91 } 92 93 static struct b_node * 94 insert_node(struct b_list *list, struct b_node *new) 95 { 96 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 97 struct b_node *b, *prev; 98 99 if (list->listTail != NULL && list->listCompare(new, list->listTail)) 100 prev = list->listTail; 101 else if (list->listLast != NULL && list->listCompare(new, list->listLast)) 102 prev = list->listLast; 103 else 104 prev = NULL; 105 106 for (b = (prev ? prev->next : list->listHead); 107 b != NULL && list->listCompare(new, b); 108 prev = b, b = b->next) { 109 list->listLoops++; 110 } 111 if (b != NULL) 112 list->listLast = prev; 113 114 if (b != NULL) { 115 new->next = b; 116 if (prev != NULL) 117 prev->next = new; 118 else 119 list->listHead = new; 120 } else 121 #endif 122 { 123 new->next = (struct b_node *) NULL; 124 if (list->listTail != NULL) { 125 list->listTail->next = new; 126 list->listTail = new; 127 } else { 128 list->listTail = list->listHead = new; 129 } 130 } 131 132 return new; 133 } 134 135 static struct b_node * 136 insert_inode(struct b_list *list, struct jffs2_raw_inode *node, u32 offset) 137 { 138 struct b_inode *new; 139 140 if (!(new = (struct b_inode *)add_node(list, sizeof(struct b_inode)))) { 141 putstr("add_node failed!\r\n"); 142 return NULL; 143 } 144 new->offset = offset; 145 new->version = node->version; 146 new->ino = node->ino; 147 new->isize = node->isize; 148 new->csize = node->csize; 149 150 return insert_node(list, (struct b_node *)new); 151 } 152 153 static struct b_node * 154 insert_dirent(struct b_list *list, struct jffs2_raw_dirent *node, u32 offset) 155 { 156 struct b_dirent *new; 157 158 if (!(new = (struct b_dirent *)add_node(list, sizeof(struct b_dirent)))) { 159 putstr("add_node failed!\r\n"); 160 return NULL; 161 } 162 new->offset = offset; 163 new->version = node->version; 164 new->pino = node->pino; 165 new->ino = node->ino; 166 new->nhash = full_name_hash(node->name, node->nsize); 167 new->nsize = node->nsize; 168 new->type = node->type; 169 170 return insert_node(list, (struct b_node *)new); 171 } 172 173 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 174 /* Sort data entries with the latest version last, so that if there 175 * is overlapping data the latest version will be used. 176 */ 177 static int compare_inodes(struct b_node *new, struct b_node *old) 178 { 179 struct jffs2_raw_inode ojNew; 180 struct jffs2_raw_inode ojOld; 181 struct jffs2_raw_inode *jNew = 182 (struct jffs2_raw_inode *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew); 183 struct jffs2_raw_inode *jOld = 184 (struct jffs2_raw_inode *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld); 185 186 return jNew->version > jOld->version; 187 } 188 189 /* Sort directory entries so all entries in the same directory 190 * with the same name are grouped together, with the latest version 191 * last. This makes it easy to eliminate all but the latest version 192 * by marking the previous version dead by setting the inode to 0. 193 */ 194 static int compare_dirents(struct b_node *new, struct b_node *old) 195 { 196 struct jffs2_raw_dirent ojNew; 197 struct jffs2_raw_dirent ojOld; 198 struct jffs2_raw_dirent *jNew = 199 (struct jffs2_raw_dirent *)get_fl_mem(new->offset, sizeof(ojNew), &ojNew); 200 struct jffs2_raw_dirent *jOld = 201 (struct jffs2_raw_dirent *)get_fl_mem(old->offset, sizeof(ojOld), &ojOld); 202 int cmp; 203 204 /* ascending sort by pino */ 205 if (jNew->pino != jOld->pino) 206 return jNew->pino > jOld->pino; 207 208 /* pino is the same, so use ascending sort by nsize, so 209 * we don't do strncmp unless we really must. 210 */ 211 if (jNew->nsize != jOld->nsize) 212 return jNew->nsize > jOld->nsize; 213 214 /* length is also the same, so use ascending sort by name 215 */ 216 cmp = strncmp(jNew->name, jOld->name, jNew->nsize); 217 if (cmp != 0) 218 return cmp > 0; 219 220 /* we have duplicate names in this directory, so use ascending 221 * sort by version 222 */ 223 if (jNew->version > jOld->version) { 224 /* since jNew is newer, we know jOld is not valid, so 225 * mark it with inode 0 and it will not be used 226 */ 227 jOld->ino = 0; 228 return 1; 229 } 230 231 return 0; 232 } 233 #endif 234 235 static u32 236 jffs_init_1pass_list(struct part_info *part) 237 { 238 struct b_lists *pL; 239 240 if (part->jffs2_priv != NULL) { 241 pL = (struct b_lists *)part->jffs2_priv; 242 free_nodes(&pL->frag); 243 free_nodes(&pL->dir); 244 free(pL); 245 } 246 if (NULL != (part->jffs2_priv = malloc(sizeof(struct b_lists)))) { 247 pL = (struct b_lists *)part->jffs2_priv; 248 249 memset(pL, 0, sizeof(*pL)); 250 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 251 pL->dir.listCompare = compare_dirents; 252 pL->frag.listCompare = compare_inodes; 253 #endif 254 } 255 return 0; 256 } 257 258 /* find the inode from the slashless name given a parent */ 259 static long 260 jffs2_1pass_read_inode(struct b_lists *pL, u32 ino, char *dest, 261 struct stat *stat) 262 { 263 struct b_inode *jNode; 264 u32 totalSize = 0; 265 u32 latestVersion = 0; 266 long ret; 267 268 #ifdef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 269 /* Find file size before loading any data, so fragments that 270 * start past the end of file can be ignored. A fragment 271 * that is partially in the file is loaded, so extra data may 272 * be loaded up to the next 4K boundary above the file size. 273 * This shouldn't cause trouble when loading kernel images, so 274 * we will live with it. 275 */ 276 for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) { 277 if ((ino == jNode->ino)) { 278 /* get actual file length from the newest node */ 279 if (jNode->version >= latestVersion) { 280 totalSize = jNode->isize; 281 latestVersion = jNode->version; 282 } 283 } 284 } 285 #endif 286 287 for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) { 288 if ((ino != jNode->ino)) 289 continue; 290 #ifndef CONFIG_SYS_JFFS2_SORT_FRAGMENTS 291 /* get actual file length from the newest node */ 292 if (jNode->version >= latestVersion) { 293 totalSize = jNode->isize; 294 latestVersion = jNode->version; 295 } 296 #endif 297 if (dest || stat) { 298 char *src, *dst; 299 char data[4096 + sizeof(struct jffs2_raw_inode)]; 300 struct jffs2_raw_inode *inode; 301 size_t len; 302 303 inode = (struct jffs2_raw_inode *)&data; 304 len = sizeof(struct jffs2_raw_inode); 305 if (dest) 306 len += jNode->csize; 307 nand_read(mtd, jNode->offset, &len, inode); 308 /* ignore data behind latest known EOF */ 309 if (inode->offset > totalSize) 310 continue; 311 312 if (stat) { 313 stat->st_mtime = inode->mtime; 314 stat->st_mode = inode->mode; 315 stat->st_ino = inode->ino; 316 stat->st_size = totalSize; 317 } 318 319 if (!dest) 320 continue; 321 322 src = ((char *) inode) + sizeof(struct jffs2_raw_inode); 323 dst = (char *) (dest + inode->offset); 324 325 switch (inode->compr) { 326 case JFFS2_COMPR_NONE: 327 ret = 0; 328 memcpy(dst, src, inode->dsize); 329 break; 330 case JFFS2_COMPR_ZERO: 331 ret = 0; 332 memset(dst, 0, inode->dsize); 333 break; 334 case JFFS2_COMPR_RTIME: 335 ret = 0; 336 rtime_decompress(src, dst, inode->csize, inode->dsize); 337 break; 338 case JFFS2_COMPR_DYNRUBIN: 339 /* this is slow but it works */ 340 ret = 0; 341 dynrubin_decompress(src, dst, inode->csize, inode->dsize); 342 break; 343 case JFFS2_COMPR_ZLIB: 344 ret = zlib_decompress(src, dst, inode->csize, inode->dsize); 345 break; 346 #if defined(CONFIG_JFFS2_LZO) 347 case JFFS2_COMPR_LZO: 348 ret = lzo_decompress(src, dst, inode->csize, inode->dsize); 349 break; 350 #endif 351 default: 352 /* unknown */ 353 putLabeledWord("UNKNOWN COMPRESSION METHOD = ", inode->compr); 354 return -1; 355 } 356 } 357 } 358 359 return totalSize; 360 } 361 362 /* find the inode from the slashless name given a parent */ 363 static u32 364 jffs2_1pass_find_inode(struct b_lists * pL, const char *name, u32 pino) 365 { 366 struct b_dirent *jDir; 367 int len = strlen(name); /* name is assumed slash free */ 368 unsigned int nhash = full_name_hash(name, len); 369 u32 version = 0; 370 u32 inode = 0; 371 372 /* we need to search all and return the inode with the highest version */ 373 for (jDir = (struct b_dirent *)pL->dir.listHead; jDir; jDir = jDir->next) { 374 if ((pino == jDir->pino) && (jDir->ino) && /* 0 for unlink */ 375 (len == jDir->nsize) && (nhash == jDir->nhash)) { 376 /* TODO: compare name */ 377 if (jDir->version < version) 378 continue; 379 380 if (jDir->version == version && inode != 0) { 381 /* I'm pretty sure this isn't legal */ 382 putstr(" ** ERROR ** "); 383 /* putnstr(jDir->name, jDir->nsize); */ 384 /* putLabeledWord(" has dup version =", version); */ 385 } 386 inode = jDir->ino; 387 version = jDir->version; 388 } 389 } 390 return inode; 391 } 392 393 char *mkmodestr(unsigned long mode, char *str) 394 { 395 static const char *l = "xwr"; 396 int mask = 1, i; 397 char c; 398 399 switch (mode & S_IFMT) { 400 case S_IFDIR: str[0] = 'd'; break; 401 case S_IFBLK: str[0] = 'b'; break; 402 case S_IFCHR: str[0] = 'c'; break; 403 case S_IFIFO: str[0] = 'f'; break; 404 case S_IFLNK: str[0] = 'l'; break; 405 case S_IFSOCK: str[0] = 's'; break; 406 case S_IFREG: str[0] = '-'; break; 407 default: str[0] = '?'; 408 } 409 410 for(i = 0; i < 9; i++) { 411 c = l[i%3]; 412 str[9-i] = (mode & mask)?c:'-'; 413 mask = mask<<1; 414 } 415 416 if(mode & S_ISUID) str[3] = (mode & S_IXUSR)?'s':'S'; 417 if(mode & S_ISGID) str[6] = (mode & S_IXGRP)?'s':'S'; 418 if(mode & S_ISVTX) str[9] = (mode & S_IXOTH)?'t':'T'; 419 str[10] = '\0'; 420 return str; 421 } 422 423 static inline void dump_stat(struct stat *st, const char *name) 424 { 425 char str[20]; 426 char s[64], *p; 427 428 if (st->st_mtime == (time_t)(-1)) /* some ctimes really hate -1 */ 429 st->st_mtime = 1; 430 431 ctime_r(&st->st_mtime, s/*,64*/); /* newlib ctime doesn't have buflen */ 432 433 if ((p = strchr(s,'\n')) != NULL) *p = '\0'; 434 if ((p = strchr(s,'\r')) != NULL) *p = '\0'; 435 436 /* 437 printf("%6lo %s %8ld %s %s\n", st->st_mode, mkmodestr(st->st_mode, str), 438 st->st_size, s, name); 439 */ 440 441 printf(" %s %8ld %s %s", mkmodestr(st->st_mode,str), st->st_size, s, name); 442 } 443 444 static inline int 445 dump_inode(struct b_lists *pL, struct b_dirent *d, struct b_inode *i) 446 { 447 char fname[JFFS2_MAX_NAME_LEN + 1]; 448 struct stat st; 449 size_t len; 450 451 if(!d || !i) return -1; 452 len = d->nsize; 453 nand_read(mtd, d->offset + sizeof(struct jffs2_raw_dirent), 454 &len, &fname); 455 fname[d->nsize] = '\0'; 456 457 memset(&st, 0, sizeof(st)); 458 459 jffs2_1pass_read_inode(pL, i->ino, NULL, &st); 460 461 dump_stat(&st, fname); 462 /* FIXME 463 if (d->type == DT_LNK) { 464 unsigned char *src = (unsigned char *) (&i[1]); 465 putstr(" -> "); 466 putnstr(src, (int)i->dsize); 467 } 468 */ 469 putstr("\r\n"); 470 471 return 0; 472 } 473 474 /* list inodes with the given pino */ 475 static u32 476 jffs2_1pass_list_inodes(struct b_lists * pL, u32 pino) 477 { 478 struct b_dirent *jDir; 479 u32 i_version = 0; 480 481 for (jDir = (struct b_dirent *)pL->dir.listHead; jDir; jDir = jDir->next) { 482 if ((pino == jDir->pino) && (jDir->ino)) { /* ino=0 -> unlink */ 483 struct b_inode *jNode = (struct b_inode *)pL->frag.listHead; 484 struct b_inode *i = NULL; 485 486 while (jNode) { 487 if (jNode->ino == jDir->ino && jNode->version >= i_version) { 488 i_version = jNode->version; 489 i = jNode; 490 } 491 jNode = jNode->next; 492 } 493 dump_inode(pL, jDir, i); 494 } 495 } 496 return pino; 497 } 498 499 static u32 500 jffs2_1pass_search_inode(struct b_lists * pL, const char *fname, u32 pino) 501 { 502 int i; 503 char tmp[256]; 504 char working_tmp[256]; 505 char *c; 506 507 /* discard any leading slash */ 508 i = 0; 509 while (fname[i] == '/') 510 i++; 511 strcpy(tmp, &fname[i]); 512 513 while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */ 514 { 515 strncpy(working_tmp, tmp, c - tmp); 516 working_tmp[c - tmp] = '\0'; 517 #if 0 518 putstr("search_inode: tmp = "); 519 putstr(tmp); 520 putstr("\r\n"); 521 putstr("search_inode: wtmp = "); 522 putstr(working_tmp); 523 putstr("\r\n"); 524 putstr("search_inode: c = "); 525 putstr(c); 526 putstr("\r\n"); 527 #endif 528 for (i = 0; i < strlen(c) - 1; i++) 529 tmp[i] = c[i + 1]; 530 tmp[i] = '\0'; 531 #if 0 532 putstr("search_inode: post tmp = "); 533 putstr(tmp); 534 putstr("\r\n"); 535 #endif 536 537 if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino))) { 538 putstr("find_inode failed for name="); 539 putstr(working_tmp); 540 putstr("\r\n"); 541 return 0; 542 } 543 } 544 /* this is for the bare filename, directories have already been mapped */ 545 if (!(pino = jffs2_1pass_find_inode(pL, tmp, pino))) { 546 putstr("find_inode failed for name="); 547 putstr(tmp); 548 putstr("\r\n"); 549 return 0; 550 } 551 return pino; 552 553 } 554 555 static u32 556 jffs2_1pass_resolve_inode(struct b_lists * pL, u32 ino) 557 { 558 struct b_dirent *jDir; 559 struct b_inode *jNode; 560 u8 jDirFoundType = 0; 561 u32 jDirFoundIno = 0; 562 u32 jDirFoundPino = 0; 563 char tmp[JFFS2_MAX_NAME_LEN + 1]; 564 u32 version = 0; 565 u32 pino; 566 567 /* we need to search all and return the inode with the highest version */ 568 for (jDir = (struct b_dirent *)pL->dir.listHead; jDir; jDir = jDir->next) { 569 if (ino == jDir->ino) { 570 if (jDir->version < version) 571 continue; 572 573 if (jDir->version == version && jDirFoundType) { 574 /* I'm pretty sure this isn't legal */ 575 putstr(" ** ERROR ** "); 576 /* putnstr(jDir->name, jDir->nsize); */ 577 /* putLabeledWord(" has dup version (resolve) = ", */ 578 /* version); */ 579 } 580 581 jDirFoundType = jDir->type; 582 jDirFoundIno = jDir->ino; 583 jDirFoundPino = jDir->pino; 584 version = jDir->version; 585 } 586 } 587 /* now we found the right entry again. (shoulda returned inode*) */ 588 if (jDirFoundType != DT_LNK) 589 return jDirFoundIno; 590 591 /* it's a soft link so we follow it again. */ 592 for (jNode = (struct b_inode *)pL->frag.listHead; jNode; jNode = jNode->next) { 593 if (jNode->ino == jDirFoundIno) { 594 size_t len = jNode->csize; 595 nand_read(mtd, 596 jNode->offset + sizeof(struct jffs2_raw_inode), 597 &len, &tmp); 598 tmp[jNode->csize] = '\0'; 599 break; 600 } 601 } 602 /* ok so the name of the new file to find is in tmp */ 603 /* if it starts with a slash it is root based else shared dirs */ 604 if (tmp[0] == '/') 605 pino = 1; 606 else 607 pino = jDirFoundPino; 608 609 return jffs2_1pass_search_inode(pL, tmp, pino); 610 } 611 612 static u32 613 jffs2_1pass_search_list_inodes(struct b_lists * pL, const char *fname, u32 pino) 614 { 615 int i; 616 char tmp[256]; 617 char working_tmp[256]; 618 char *c; 619 620 /* discard any leading slash */ 621 i = 0; 622 while (fname[i] == '/') 623 i++; 624 strcpy(tmp, &fname[i]); 625 working_tmp[0] = '\0'; 626 while ((c = (char *) strchr(tmp, '/'))) /* we are still dired searching */ 627 { 628 strncpy(working_tmp, tmp, c - tmp); 629 working_tmp[c - tmp] = '\0'; 630 for (i = 0; i < strlen(c) - 1; i++) 631 tmp[i] = c[i + 1]; 632 tmp[i] = '\0'; 633 /* only a failure if we arent looking at top level */ 634 if (!(pino = jffs2_1pass_find_inode(pL, working_tmp, pino)) && 635 (working_tmp[0])) { 636 putstr("find_inode failed for name="); 637 putstr(working_tmp); 638 putstr("\r\n"); 639 return 0; 640 } 641 } 642 643 if (tmp[0] && !(pino = jffs2_1pass_find_inode(pL, tmp, pino))) { 644 putstr("find_inode failed for name="); 645 putstr(tmp); 646 putstr("\r\n"); 647 return 0; 648 } 649 /* this is for the bare filename, directories have already been mapped */ 650 if (!(pino = jffs2_1pass_list_inodes(pL, pino))) { 651 putstr("find_inode failed for name="); 652 putstr(tmp); 653 putstr("\r\n"); 654 return 0; 655 } 656 return pino; 657 658 } 659 660 unsigned char 661 jffs2_1pass_rescan_needed(struct part_info *part) 662 { 663 struct b_node *b; 664 struct jffs2_unknown_node onode; 665 struct jffs2_unknown_node *node; 666 struct b_lists *pL = (struct b_lists *)part->jffs2_priv; 667 668 if (part->jffs2_priv == 0){ 669 DEBUGF ("rescan: First time in use\n"); 670 return 1; 671 } 672 /* if we have no list, we need to rescan */ 673 if (pL->frag.listCount == 0) { 674 DEBUGF ("rescan: fraglist zero\n"); 675 return 1; 676 } 677 678 /* or if we are scanning a new partition */ 679 if (pL->partOffset != part->offset) { 680 DEBUGF ("rescan: different partition\n"); 681 return 1; 682 } 683 684 /* FIXME */ 685 #if 0 686 /* but suppose someone reflashed a partition at the same offset... */ 687 b = pL->dir.listHead; 688 while (b) { 689 node = (struct jffs2_unknown_node *) get_fl_mem(b->offset, 690 sizeof(onode), &onode); 691 if (node->nodetype != JFFS2_NODETYPE_DIRENT) { 692 DEBUGF ("rescan: fs changed beneath me? (%lx)\n", 693 (unsigned long) b->offset); 694 return 1; 695 } 696 b = b->next; 697 } 698 #endif 699 return 0; 700 } 701 702 #ifdef DEBUG_FRAGMENTS 703 static void 704 dump_fragments(struct b_lists *pL) 705 { 706 struct b_node *b; 707 struct jffs2_raw_inode ojNode; 708 struct jffs2_raw_inode *jNode; 709 710 putstr("\r\n\r\n******The fragment Entries******\r\n"); 711 b = pL->frag.listHead; 712 while (b) { 713 jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, 714 sizeof(ojNode), &ojNode); 715 putLabeledWord("\r\n\tbuild_list: FLASH_OFFSET = ", b->offset); 716 putLabeledWord("\tbuild_list: totlen = ", jNode->totlen); 717 putLabeledWord("\tbuild_list: inode = ", jNode->ino); 718 putLabeledWord("\tbuild_list: version = ", jNode->version); 719 putLabeledWord("\tbuild_list: isize = ", jNode->isize); 720 putLabeledWord("\tbuild_list: atime = ", jNode->atime); 721 putLabeledWord("\tbuild_list: offset = ", jNode->offset); 722 putLabeledWord("\tbuild_list: csize = ", jNode->csize); 723 putLabeledWord("\tbuild_list: dsize = ", jNode->dsize); 724 putLabeledWord("\tbuild_list: compr = ", jNode->compr); 725 putLabeledWord("\tbuild_list: usercompr = ", jNode->usercompr); 726 putLabeledWord("\tbuild_list: flags = ", jNode->flags); 727 putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */ 728 b = b->next; 729 } 730 } 731 #endif 732 733 #ifdef DEBUG_DIRENTS 734 static void 735 dump_dirents(struct b_lists *pL) 736 { 737 struct b_node *b; 738 struct jffs2_raw_dirent *jDir; 739 740 putstr("\r\n\r\n******The directory Entries******\r\n"); 741 b = pL->dir.listHead; 742 while (b) { 743 jDir = (struct jffs2_raw_dirent *) get_node_mem(b->offset); 744 putstr("\r\n"); 745 putnstr(jDir->name, jDir->nsize); 746 putLabeledWord("\r\n\tbuild_list: magic = ", jDir->magic); 747 putLabeledWord("\tbuild_list: nodetype = ", jDir->nodetype); 748 putLabeledWord("\tbuild_list: hdr_crc = ", jDir->hdr_crc); 749 putLabeledWord("\tbuild_list: pino = ", jDir->pino); 750 putLabeledWord("\tbuild_list: version = ", jDir->version); 751 putLabeledWord("\tbuild_list: ino = ", jDir->ino); 752 putLabeledWord("\tbuild_list: mctime = ", jDir->mctime); 753 putLabeledWord("\tbuild_list: nsize = ", jDir->nsize); 754 putLabeledWord("\tbuild_list: type = ", jDir->type); 755 putLabeledWord("\tbuild_list: node_crc = ", jDir->node_crc); 756 putLabeledWord("\tbuild_list: name_crc = ", jDir->name_crc); 757 putLabeledWord("\tbuild_list: offset = ", b->offset); /* FIXME: ? [RS] */ 758 b = b->next; 759 put_fl_mem(jDir); 760 } 761 } 762 #endif 763 764 static int 765 jffs2_fill_scan_buf(struct mtd_info *mtd, unsigned char *buf, 766 unsigned ofs, unsigned len) 767 { 768 int ret; 769 unsigned olen; 770 771 olen = len; 772 ret = nand_read(mtd, ofs, &olen, buf); 773 if (ret) { 774 printf("nand_read(0x%x bytes from 0x%x) returned %d\n", len, ofs, ret); 775 return ret; 776 } 777 if (olen < len) { 778 printf("Read at 0x%x gave only 0x%x bytes\n", ofs, olen); 779 return -1; 780 } 781 return 0; 782 } 783 784 #define EMPTY_SCAN_SIZE 1024 785 static u32 786 jffs2_1pass_build_lists(struct part_info * part) 787 { 788 struct b_lists *pL; 789 struct jffs2_unknown_node *node; 790 unsigned nr_blocks, sectorsize, ofs, offset; 791 char *buf; 792 int i; 793 u32 counter = 0; 794 u32 counter4 = 0; 795 u32 counterF = 0; 796 u32 counterN = 0; 797 798 struct mtdids *id = part->dev->id; 799 mtd = get_nand_dev_by_index(id->num); 800 if (!mtd) { 801 pr_err("\nno NAND devices available\n"); 802 return 0; 803 } 804 805 /* if we are building a list we need to refresh the cache. */ 806 jffs_init_1pass_list(part); 807 pL = (struct b_lists *)part->jffs2_priv; 808 pL->partOffset = part->offset; 809 puts ("Scanning JFFS2 FS: "); 810 811 sectorsize = mtd->erasesize; 812 nr_blocks = part->size / sectorsize; 813 buf = malloc(sectorsize); 814 if (!buf) 815 return 0; 816 817 for (i = 0; i < nr_blocks; i++) { 818 printf("\b\b%c ", spinner[counter++ % sizeof(spinner)]); 819 820 offset = part->offset + i * sectorsize; 821 822 if (nand_block_isbad(mtd, offset)) 823 continue; 824 825 if (jffs2_fill_scan_buf(mtd, buf, offset, EMPTY_SCAN_SIZE)) 826 return 0; 827 828 ofs = 0; 829 /* Scan only 4KiB of 0xFF before declaring it's empty */ 830 while (ofs < EMPTY_SCAN_SIZE && *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF) 831 ofs += 4; 832 if (ofs == EMPTY_SCAN_SIZE) 833 continue; 834 835 if (jffs2_fill_scan_buf(mtd, buf + EMPTY_SCAN_SIZE, offset + EMPTY_SCAN_SIZE, sectorsize - EMPTY_SCAN_SIZE)) 836 return 0; 837 offset += ofs; 838 839 while (ofs < sectorsize - sizeof(struct jffs2_unknown_node)) { 840 node = (struct jffs2_unknown_node *)&buf[ofs]; 841 if (node->magic != JFFS2_MAGIC_BITMASK || !hdr_crc(node)) { 842 offset += 4; 843 ofs += 4; 844 counter4++; 845 continue; 846 } 847 /* if its a fragment add it */ 848 if (node->nodetype == JFFS2_NODETYPE_INODE && 849 inode_crc((struct jffs2_raw_inode *) node)) { 850 if (insert_inode(&pL->frag, (struct jffs2_raw_inode *) node, 851 offset) == NULL) { 852 return 0; 853 } 854 } else if (node->nodetype == JFFS2_NODETYPE_DIRENT && 855 dirent_crc((struct jffs2_raw_dirent *) node) && 856 dirent_name_crc((struct jffs2_raw_dirent *) node)) { 857 if (! (counterN%100)) 858 puts ("\b\b. "); 859 if (insert_dirent(&pL->dir, (struct jffs2_raw_dirent *) node, 860 offset) == NULL) { 861 return 0; 862 } 863 counterN++; 864 } else if (node->nodetype == JFFS2_NODETYPE_CLEANMARKER) { 865 if (node->totlen != sizeof(struct jffs2_unknown_node)) 866 printf("OOPS Cleanmarker has bad size " 867 "%d != %zu\n", 868 node->totlen, 869 sizeof(struct jffs2_unknown_node)); 870 } else if (node->nodetype == JFFS2_NODETYPE_PADDING) { 871 if (node->totlen < sizeof(struct jffs2_unknown_node)) 872 printf("OOPS Padding has bad size " 873 "%d < %zu\n", 874 node->totlen, 875 sizeof(struct jffs2_unknown_node)); 876 } else { 877 printf("Unknown node type: %x len %d offset 0x%x\n", 878 node->nodetype, 879 node->totlen, offset); 880 } 881 offset += ((node->totlen + 3) & ~3); 882 ofs += ((node->totlen + 3) & ~3); 883 counterF++; 884 } 885 } 886 887 putstr("\b\b done.\r\n"); /* close off the dots */ 888 889 #if 0 890 putLabeledWord("dir entries = ", pL->dir.listCount); 891 putLabeledWord("frag entries = ", pL->frag.listCount); 892 putLabeledWord("+4 increments = ", counter4); 893 putLabeledWord("+file_offset increments = ", counterF); 894 #endif 895 896 #ifdef DEBUG_DIRENTS 897 dump_dirents(pL); 898 #endif 899 900 #ifdef DEBUG_FRAGMENTS 901 dump_fragments(pL); 902 #endif 903 904 /* give visual feedback that we are done scanning the flash */ 905 led_blink(0x0, 0x0, 0x1, 0x1); /* off, forever, on 100ms, off 100ms */ 906 free(buf); 907 908 return 1; 909 } 910 911 912 static u32 913 jffs2_1pass_fill_info(struct b_lists * pL, struct b_jffs2_info * piL) 914 { 915 struct b_node *b; 916 struct jffs2_raw_inode ojNode; 917 struct jffs2_raw_inode *jNode; 918 int i; 919 920 for (i = 0; i < JFFS2_NUM_COMPR; i++) { 921 piL->compr_info[i].num_frags = 0; 922 piL->compr_info[i].compr_sum = 0; 923 piL->compr_info[i].decompr_sum = 0; 924 } 925 /* FIXME 926 b = pL->frag.listHead; 927 while (b) { 928 jNode = (struct jffs2_raw_inode *) get_fl_mem(b->offset, 929 sizeof(ojNode), &ojNode); 930 if (jNode->compr < JFFS2_NUM_COMPR) { 931 piL->compr_info[jNode->compr].num_frags++; 932 piL->compr_info[jNode->compr].compr_sum += jNode->csize; 933 piL->compr_info[jNode->compr].decompr_sum += jNode->dsize; 934 } 935 b = b->next; 936 } 937 */ 938 return 0; 939 } 940 941 942 static struct b_lists * 943 jffs2_get_list(struct part_info * part, const char *who) 944 { 945 if (jffs2_1pass_rescan_needed(part)) { 946 if (!jffs2_1pass_build_lists(part)) { 947 printf("%s: Failed to scan JFFSv2 file structure\n", who); 948 return NULL; 949 } 950 } 951 return (struct b_lists *)part->jffs2_priv; 952 } 953 954 955 /* Print directory / file contents */ 956 u32 957 jffs2_1pass_ls(struct part_info * part, const char *fname) 958 { 959 struct b_lists *pl; 960 long ret = 0; 961 u32 inode; 962 963 if (! (pl = jffs2_get_list(part, "ls"))) 964 return 0; 965 966 if (! (inode = jffs2_1pass_search_list_inodes(pl, fname, 1))) { 967 putstr("ls: Failed to scan jffs2 file structure\r\n"); 968 return 0; 969 } 970 971 #if 0 972 putLabeledWord("found file at inode = ", inode); 973 putLabeledWord("read_inode returns = ", ret); 974 #endif 975 976 return ret; 977 } 978 979 980 /* Load a file from flash into memory. fname can be a full path */ 981 u32 982 jffs2_1pass_load(char *dest, struct part_info * part, const char *fname) 983 { 984 985 struct b_lists *pl; 986 long ret = 0; 987 u32 inode; 988 989 if (! (pl = jffs2_get_list(part, "load"))) 990 return 0; 991 992 if (! (inode = jffs2_1pass_search_inode(pl, fname, 1))) { 993 putstr("load: Failed to find inode\r\n"); 994 return 0; 995 } 996 997 /* Resolve symlinks */ 998 if (! (inode = jffs2_1pass_resolve_inode(pl, inode))) { 999 putstr("load: Failed to resolve inode structure\r\n"); 1000 return 0; 1001 } 1002 1003 if ((ret = jffs2_1pass_read_inode(pl, inode, dest, NULL)) < 0) { 1004 putstr("load: Failed to read inode\r\n"); 1005 return 0; 1006 } 1007 1008 DEBUGF ("load: loaded '%s' to 0x%lx (%ld bytes)\n", fname, 1009 (unsigned long) dest, ret); 1010 return ret; 1011 } 1012 1013 /* Return information about the fs on this partition */ 1014 u32 1015 jffs2_1pass_info(struct part_info * part) 1016 { 1017 struct b_jffs2_info info; 1018 struct b_lists *pl; 1019 int i; 1020 1021 if (! (pl = jffs2_get_list(part, "info"))) 1022 return 0; 1023 1024 jffs2_1pass_fill_info(pl, &info); 1025 for (i = 0; i < JFFS2_NUM_COMPR; i++) { 1026 printf ("Compression: %s\n" 1027 "\tfrag count: %d\n" 1028 "\tcompressed sum: %d\n" 1029 "\tuncompressed sum: %d\n", 1030 compr_names[i], 1031 info.compr_info[i].num_frags, 1032 info.compr_info[i].compr_sum, 1033 info.compr_info[i].decompr_sum); 1034 } 1035 return 1; 1036 } 1037