debugfs.c revision a9b23fc99da8c8918cb5fb8dcd1732edb70ad382
1/* 2 * debugfs.c --- a program which allows you to attach an ext2fs 3 * filesystem and play with it. 4 * 5 * Copyright (C) 1993 Theodore Ts'o. This file may be redistributed 6 * under the terms of the GNU Public License. 7 * 8 * Modifications by Robert Sanders <gt8134b@prism.gatech.edu> 9 */ 10 11#include "config.h" 12#include <stdio.h> 13#include <unistd.h> 14#include <stdlib.h> 15#include <ctype.h> 16#include <string.h> 17#include <time.h> 18#ifdef HAVE_GETOPT_H 19#include <getopt.h> 20#else 21extern int optind; 22extern char *optarg; 23#endif 24#ifdef HAVE_ERRNO_H 25#include <errno.h> 26#endif 27#include <fcntl.h> 28#include <sys/types.h> 29#include <sys/stat.h> 30 31#include "debugfs.h" 32#include "uuid/uuid.h" 33#include "e2p/e2p.h" 34 35#include <ext2fs/ext2_ext_attr.h> 36 37#include "../version.h" 38#include "jfs_user.h" 39 40#ifndef BUFSIZ 41#define BUFSIZ 8192 42#endif 43 44/* 64KiB is the minimium blksize to best minimize system call overhead. */ 45#ifndef IO_BUFSIZE 46#define IO_BUFSIZE 64*1024 47#endif 48 49/* Block size for `st_blocks' */ 50#ifndef S_BLKSIZE 51#define S_BLKSIZE 512 52#endif 53 54ss_request_table *extra_cmds; 55const char *debug_prog_name; 56int sci_idx; 57 58ext2_filsys current_fs = NULL; 59ext2_ino_t root, cwd; 60 61static void open_filesystem(char *device, int open_flags, blk64_t superblock, 62 blk64_t blocksize, int catastrophic, 63 char *data_filename) 64{ 65 int retval; 66 io_channel data_io = 0; 67 68 if (superblock != 0 && blocksize == 0) { 69 com_err(device, 0, "if you specify the superblock, you must also specify the block size"); 70 current_fs = NULL; 71 return; 72 } 73 74 if (data_filename) { 75 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) { 76 com_err(device, 0, 77 "The -d option is only valid when reading an e2image file"); 78 current_fs = NULL; 79 return; 80 } 81 retval = unix_io_manager->open(data_filename, 0, &data_io); 82 if (retval) { 83 com_err(data_filename, 0, "while opening data source"); 84 current_fs = NULL; 85 return; 86 } 87 } 88 89 if (catastrophic && (open_flags & EXT2_FLAG_RW)) { 90 com_err(device, 0, 91 "opening read-only because of catastrophic mode"); 92 open_flags &= ~EXT2_FLAG_RW; 93 } 94 if (catastrophic) 95 open_flags |= EXT2_FLAG_SKIP_MMP; 96 97 retval = ext2fs_open(device, open_flags, superblock, blocksize, 98 unix_io_manager, ¤t_fs); 99 if (retval) { 100 com_err(device, retval, "while opening filesystem"); 101 current_fs = NULL; 102 return; 103 } 104 current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE; 105 106 if (catastrophic) 107 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps"); 108 else { 109 retval = ext2fs_read_inode_bitmap(current_fs); 110 if (retval) { 111 com_err(device, retval, "while reading inode bitmap"); 112 goto errout; 113 } 114 retval = ext2fs_read_block_bitmap(current_fs); 115 if (retval) { 116 com_err(device, retval, "while reading block bitmap"); 117 goto errout; 118 } 119 } 120 121 if (data_io) { 122 retval = ext2fs_set_data_io(current_fs, data_io); 123 if (retval) { 124 com_err(device, retval, 125 "while setting data source"); 126 goto errout; 127 } 128 } 129 130 root = cwd = EXT2_ROOT_INO; 131 return; 132 133errout: 134 retval = ext2fs_close(current_fs); 135 if (retval) 136 com_err(device, retval, "while trying to close filesystem"); 137 current_fs = NULL; 138} 139 140void do_open_filesys(int argc, char **argv) 141{ 142 int c, err; 143 int catastrophic = 0; 144 blk64_t superblock = 0; 145 blk64_t blocksize = 0; 146 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS; 147 char *data_filename = 0; 148 149 reset_getopt(); 150 while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) { 151 switch (c) { 152 case 'i': 153 open_flags |= EXT2_FLAG_IMAGE_FILE; 154 break; 155 case 'w': 156#ifdef READ_ONLY 157 goto print_usage; 158#else 159 open_flags |= EXT2_FLAG_RW; 160#endif /* READ_ONLY */ 161 break; 162 case 'f': 163 open_flags |= EXT2_FLAG_FORCE; 164 break; 165 case 'e': 166 open_flags |= EXT2_FLAG_EXCLUSIVE; 167 break; 168 case 'c': 169 catastrophic = 1; 170 break; 171 case 'd': 172 data_filename = optarg; 173 break; 174 case 'D': 175 open_flags |= EXT2_FLAG_DIRECT_IO; 176 break; 177 case 'b': 178 blocksize = parse_ulong(optarg, argv[0], 179 "block size", &err); 180 if (err) 181 return; 182 break; 183 case 's': 184 superblock = parse_ulong(optarg, argv[0], 185 "superblock number", &err); 186 if (err) 187 return; 188 break; 189 default: 190 goto print_usage; 191 } 192 } 193 if (optind != argc-1) { 194 goto print_usage; 195 } 196 if (check_fs_not_open(argv[0])) 197 return; 198 open_filesystem(argv[optind], open_flags, 199 superblock, blocksize, catastrophic, 200 data_filename); 201 return; 202 203print_usage: 204 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] [-c] " 205#ifndef READ_ONLY 206 "[-w] " 207#endif 208 "<device>\n", argv[0]); 209} 210 211void do_lcd(int argc, char **argv) 212{ 213 if (argc != 2) { 214 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>"); 215 return; 216 } 217 218 if (chdir(argv[1]) == -1) { 219 com_err(argv[0], errno, 220 "while trying to change native directory to %s", 221 argv[1]); 222 return; 223 } 224} 225 226static void close_filesystem(NOARGS) 227{ 228 int retval; 229 230 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) { 231 retval = ext2fs_write_inode_bitmap(current_fs); 232 if (retval) 233 com_err("ext2fs_write_inode_bitmap", retval, 0); 234 } 235 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) { 236 retval = ext2fs_write_block_bitmap(current_fs); 237 if (retval) 238 com_err("ext2fs_write_block_bitmap", retval, 0); 239 } 240 retval = ext2fs_close(current_fs); 241 if (retval) 242 com_err("ext2fs_close", retval, 0); 243 current_fs = NULL; 244 return; 245} 246 247void do_close_filesys(int argc, char **argv) 248{ 249 int c; 250 251 if (check_fs_open(argv[0])) 252 return; 253 254 reset_getopt(); 255 while ((c = getopt (argc, argv, "a")) != EOF) { 256 switch (c) { 257 case 'a': 258 current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY; 259 break; 260 default: 261 goto print_usage; 262 } 263 } 264 265 if (argc > optind) { 266 print_usage: 267 com_err(0, 0, "Usage: close_filesys [-a]"); 268 return; 269 } 270 271 close_filesystem(); 272} 273 274#ifndef READ_ONLY 275void do_init_filesys(int argc, char **argv) 276{ 277 struct ext2_super_block param; 278 errcode_t retval; 279 int err; 280 281 if (common_args_process(argc, argv, 3, 3, "initialize", 282 "<device> <blocksize>", CHECK_FS_NOTOPEN)) 283 return; 284 285 memset(¶m, 0, sizeof(struct ext2_super_block)); 286 ext2fs_blocks_count_set(¶m, parse_ulong(argv[2], argv[0], 287 "blocks count", &err)); 288 if (err) 289 return; 290 retval = ext2fs_initialize(argv[1], 0, ¶m, 291 unix_io_manager, ¤t_fs); 292 if (retval) { 293 com_err(argv[1], retval, "while initializing filesystem"); 294 current_fs = NULL; 295 return; 296 } 297 root = cwd = EXT2_ROOT_INO; 298 return; 299} 300 301static void print_features(struct ext2_super_block * s, FILE *f) 302{ 303 int i, j, printed=0; 304 __u32 *mask = &s->s_feature_compat, m; 305 306 fputs("Filesystem features:", f); 307 for (i=0; i <3; i++,mask++) { 308 for (j=0,m=1; j < 32; j++, m<<=1) { 309 if (*mask & m) { 310 fprintf(f, " %s", e2p_feature2string(i, m)); 311 printed++; 312 } 313 } 314 } 315 if (printed == 0) 316 fputs("(none)", f); 317 fputs("\n", f); 318} 319#endif /* READ_ONLY */ 320 321static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask, 322 const char *str, int *first, FILE *f) 323{ 324 if (ext2fs_bg_flags_test(fs, group, mask)) { 325 if (*first) { 326 fputs(" [", f); 327 *first = 0; 328 } else 329 fputs(", ", f); 330 fputs(str, f); 331 } 332} 333 334void do_show_super_stats(int argc, char *argv[]) 335{ 336 const char *units ="block"; 337 dgrp_t i; 338 FILE *out; 339 int c, header_only = 0; 340 int numdirs = 0, first, gdt_csum; 341 342 reset_getopt(); 343 while ((c = getopt (argc, argv, "h")) != EOF) { 344 switch (c) { 345 case 'h': 346 header_only++; 347 break; 348 default: 349 goto print_usage; 350 } 351 } 352 if (optind != argc) { 353 goto print_usage; 354 } 355 if (check_fs_open(argv[0])) 356 return; 357 out = open_pager(); 358 359 if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super, 360 EXT4_FEATURE_RO_COMPAT_BIGALLOC)) 361 units = "cluster"; 362 363 list_super2(current_fs->super, out); 364 for (i=0; i < current_fs->group_desc_count; i++) 365 numdirs += ext2fs_bg_used_dirs_count(current_fs, i); 366 fprintf(out, "Directories: %d\n", numdirs); 367 368 if (header_only) { 369 close_pager(out); 370 return; 371 } 372 373 gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super, 374 EXT4_FEATURE_RO_COMPAT_GDT_CSUM); 375 for (i = 0; i < current_fs->group_desc_count; i++) { 376 fprintf(out, " Group %2d: block bitmap at %llu, " 377 "inode bitmap at %llu, " 378 "inode table at %llu\n" 379 " %u free %s%s, " 380 "%u free %s, " 381 "%u used %s%s", 382 i, ext2fs_block_bitmap_loc(current_fs, i), 383 ext2fs_inode_bitmap_loc(current_fs, i), 384 ext2fs_inode_table_loc(current_fs, i), 385 ext2fs_bg_free_blocks_count(current_fs, i), units, 386 ext2fs_bg_free_blocks_count(current_fs, i) != 1 ? 387 "s" : "", 388 ext2fs_bg_free_inodes_count(current_fs, i), 389 ext2fs_bg_free_inodes_count(current_fs, i) != 1 ? 390 "inodes" : "inode", 391 ext2fs_bg_used_dirs_count(current_fs, i), 392 ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories" 393 : "directory", gdt_csum ? ", " : "\n"); 394 if (gdt_csum) 395 fprintf(out, "%u unused %s\n", 396 ext2fs_bg_itable_unused(current_fs, i), 397 ext2fs_bg_itable_unused(current_fs, i) != 1 ? 398 "inodes" : "inode"); 399 first = 1; 400 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init", 401 &first, out); 402 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init", 403 &first, out); 404 if (gdt_csum) { 405 fprintf(out, "%sChecksum 0x%04x", 406 first ? " [":", ", ext2fs_bg_checksum(current_fs, i)); 407 first = 0; 408 } 409 if (!first) 410 fputs("]\n", out); 411 } 412 close_pager(out); 413 return; 414print_usage: 415 fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]); 416} 417 418#ifndef READ_ONLY 419void do_dirty_filesys(int argc EXT2FS_ATTR((unused)), 420 char **argv EXT2FS_ATTR((unused))) 421{ 422 if (check_fs_open(argv[0])) 423 return; 424 if (check_fs_read_write(argv[0])) 425 return; 426 427 if (argv[1] && !strcmp(argv[1], "-clean")) 428 current_fs->super->s_state |= EXT2_VALID_FS; 429 else 430 current_fs->super->s_state &= ~EXT2_VALID_FS; 431 ext2fs_mark_super_dirty(current_fs); 432} 433#endif /* READ_ONLY */ 434 435struct list_blocks_struct { 436 FILE *f; 437 e2_blkcnt_t total; 438 blk64_t first_block, last_block; 439 e2_blkcnt_t first_bcnt, last_bcnt; 440 e2_blkcnt_t first; 441}; 442 443static void finish_range(struct list_blocks_struct *lb) 444{ 445 if (lb->first_block == 0) 446 return; 447 if (lb->first) 448 lb->first = 0; 449 else 450 fprintf(lb->f, ", "); 451 if (lb->first_block == lb->last_block) 452 fprintf(lb->f, "(%lld):%llu", 453 (long long)lb->first_bcnt, lb->first_block); 454 else 455 fprintf(lb->f, "(%lld-%lld):%llu-%llu", 456 (long long)lb->first_bcnt, (long long)lb->last_bcnt, 457 lb->first_block, lb->last_block); 458 lb->first_block = 0; 459} 460 461static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)), 462 blk64_t *blocknr, e2_blkcnt_t blockcnt, 463 blk64_t ref_block EXT2FS_ATTR((unused)), 464 int ref_offset EXT2FS_ATTR((unused)), 465 void *private) 466{ 467 struct list_blocks_struct *lb = (struct list_blocks_struct *) private; 468 469 lb->total++; 470 if (blockcnt >= 0) { 471 /* 472 * See if we can add on to the existing range (if it exists) 473 */ 474 if (lb->first_block && 475 (lb->last_block+1 == *blocknr) && 476 (lb->last_bcnt+1 == blockcnt)) { 477 lb->last_block = *blocknr; 478 lb->last_bcnt = blockcnt; 479 return 0; 480 } 481 /* 482 * Start a new range. 483 */ 484 finish_range(lb); 485 lb->first_block = lb->last_block = *blocknr; 486 lb->first_bcnt = lb->last_bcnt = blockcnt; 487 return 0; 488 } 489 /* 490 * Not a normal block. Always force a new range. 491 */ 492 finish_range(lb); 493 if (lb->first) 494 lb->first = 0; 495 else 496 fprintf(lb->f, ", "); 497 if (blockcnt == -1) 498 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr); 499 else if (blockcnt == -2) 500 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr); 501 else if (blockcnt == -3) 502 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr); 503 return 0; 504} 505 506static void dump_xattr_string(FILE *out, const char *str, int len) 507{ 508 int printable = 0; 509 int i; 510 511 /* check: is string "printable enough?" */ 512 for (i = 0; i < len; i++) 513 if (isprint(str[i])) 514 printable++; 515 516 if (printable <= len*7/8) 517 printable = 0; 518 519 for (i = 0; i < len; i++) 520 if (printable) 521 fprintf(out, isprint(str[i]) ? "%c" : "\\%03o", 522 (unsigned char)str[i]); 523 else 524 fprintf(out, "%02x ", (unsigned char)str[i]); 525} 526 527static void internal_dump_inode_extra(FILE *out, 528 const char *prefix EXT2FS_ATTR((unused)), 529 ext2_ino_t inode_num EXT2FS_ATTR((unused)), 530 struct ext2_inode_large *inode) 531{ 532 struct ext2_ext_attr_entry *entry; 533 __u32 *magic; 534 char *start, *end; 535 unsigned int storage_size; 536 537 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize); 538 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) - 539 EXT2_GOOD_OLD_INODE_SIZE) { 540 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n", 541 inode->i_extra_isize); 542 return; 543 } 544 storage_size = EXT2_INODE_SIZE(current_fs->super) - 545 EXT2_GOOD_OLD_INODE_SIZE - 546 inode->i_extra_isize; 547 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE + 548 inode->i_extra_isize); 549 if (*magic == EXT2_EXT_ATTR_MAGIC) { 550 fprintf(out, "Extended attributes stored in inode body: \n"); 551 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super); 552 start = (char *) magic + sizeof(__u32); 553 entry = (struct ext2_ext_attr_entry *) start; 554 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) { 555 struct ext2_ext_attr_entry *next = 556 EXT2_EXT_ATTR_NEXT(entry); 557 if (entry->e_value_size > storage_size || 558 (char *) next >= end) { 559 fprintf(out, "invalid EA entry in inode\n"); 560 return; 561 } 562 fprintf(out, " "); 563 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry), 564 entry->e_name_len); 565 fprintf(out, " = \""); 566 dump_xattr_string(out, start + entry->e_value_offs, 567 entry->e_value_size); 568 fprintf(out, "\" (%u)\n", entry->e_value_size); 569 entry = next; 570 } 571 } 572} 573 574static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode) 575{ 576 struct list_blocks_struct lb; 577 578 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix); 579 lb.total = 0; 580 lb.first_block = 0; 581 lb.f = f; 582 lb.first = 1; 583 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL, 584 list_blocks_proc, (void *)&lb); 585 finish_range(&lb); 586 if (lb.total) 587 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total); 588 fprintf(f,"\n"); 589} 590 591static int int_log10(unsigned long long arg) 592{ 593 int l = 0; 594 595 arg = arg / 10; 596 while (arg) { 597 l++; 598 arg = arg / 10; 599 } 600 return l; 601} 602 603#define DUMP_LEAF_EXTENTS 0x01 604#define DUMP_NODE_EXTENTS 0x02 605#define DUMP_EXTENT_TABLE 0x04 606 607static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino, 608 int flags, int logical_width, int physical_width) 609{ 610 ext2_extent_handle_t handle; 611 struct ext2fs_extent extent; 612 struct ext2_extent_info info; 613 int op = EXT2_EXTENT_ROOT; 614 unsigned int printed = 0; 615 errcode_t errcode; 616 617 errcode = ext2fs_extent_open(current_fs, ino, &handle); 618 if (errcode) 619 return; 620 621 if (flags & DUMP_EXTENT_TABLE) 622 fprintf(f, "Level Entries %*s %*s Length Flags\n", 623 (logical_width*2)+3, "Logical", 624 (physical_width*2)+3, "Physical"); 625 else 626 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix); 627 628 while (1) { 629 errcode = ext2fs_extent_get(handle, op, &extent); 630 631 if (errcode) 632 break; 633 634 op = EXT2_EXTENT_NEXT; 635 636 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT) 637 continue; 638 639 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) { 640 if ((flags & DUMP_LEAF_EXTENTS) == 0) 641 continue; 642 } else { 643 if ((flags & DUMP_NODE_EXTENTS) == 0) 644 continue; 645 } 646 647 errcode = ext2fs_extent_get_info(handle, &info); 648 if (errcode) 649 continue; 650 651 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) { 652 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT) 653 continue; 654 655 if (flags & DUMP_EXTENT_TABLE) { 656 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu " 657 "%*llu%*s %6u\n", 658 info.curr_level, info.max_depth, 659 info.curr_entry, info.num_entries, 660 logical_width, 661 extent.e_lblk, 662 logical_width, 663 extent.e_lblk + (extent.e_len - 1), 664 physical_width, 665 extent.e_pblk, 666 physical_width+3, "", extent.e_len); 667 continue; 668 } 669 670 fprintf(f, "%s(ETB%d):%lld", 671 printed ? ", " : "", info.curr_level, 672 extent.e_pblk); 673 printed = 1; 674 continue; 675 } 676 677 if (flags & DUMP_EXTENT_TABLE) { 678 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu " 679 "%*llu - %*llu %6u %s\n", 680 info.curr_level, info.max_depth, 681 info.curr_entry, info.num_entries, 682 logical_width, 683 extent.e_lblk, 684 logical_width, 685 extent.e_lblk + (extent.e_len - 1), 686 physical_width, 687 extent.e_pblk, 688 physical_width, 689 extent.e_pblk + (extent.e_len - 1), 690 extent.e_len, 691 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ? 692 "Uninit" : ""); 693 continue; 694 } 695 696 if (extent.e_len == 0) 697 continue; 698 else if (extent.e_len == 1) 699 fprintf(f, 700 "%s(%lld%s):%lld", 701 printed ? ", " : "", 702 extent.e_lblk, 703 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ? 704 "[u]" : "", 705 extent.e_pblk); 706 else 707 fprintf(f, 708 "%s(%lld-%lld%s):%lld-%lld", 709 printed ? ", " : "", 710 extent.e_lblk, 711 extent.e_lblk + (extent.e_len - 1), 712 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ? 713 "[u]" : "", 714 extent.e_pblk, 715 extent.e_pblk + (extent.e_len - 1)); 716 printed = 1; 717 } 718 if (printed) 719 fprintf(f, "\n"); 720} 721 722void internal_dump_inode(FILE *out, const char *prefix, 723 ext2_ino_t inode_num, struct ext2_inode *inode, 724 int do_dump_blocks) 725{ 726 const char *i_type; 727 char frag, fsize; 728 int os = current_fs->super->s_creator_os; 729 struct ext2_inode_large *large_inode; 730 int is_large_inode = 0; 731 732 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE) 733 is_large_inode = 1; 734 large_inode = (struct ext2_inode_large *) inode; 735 736 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory"; 737 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular"; 738 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink"; 739 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special"; 740 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special"; 741 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO"; 742 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket"; 743 else i_type = "bad type"; 744 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type); 745 fprintf(out, "%sMode: %04o Flags: 0x%x\n", 746 prefix, inode->i_mode & 0777, inode->i_flags); 747 if (is_large_inode && large_inode->i_extra_isize >= 24) { 748 fprintf(out, "%sGeneration: %u Version: 0x%08x:%08x\n", 749 prefix, inode->i_generation, large_inode->i_version_hi, 750 inode->osd1.linux1.l_i_version); 751 } else { 752 fprintf(out, "%sGeneration: %u Version: 0x%08x\n", prefix, 753 inode->i_generation, inode->osd1.linux1.l_i_version); 754 } 755 fprintf(out, "%sUser: %5d Group: %5d Size: ", 756 prefix, inode_uid(*inode), inode_gid(*inode)); 757 if (LINUX_S_ISREG(inode->i_mode)) 758 fprintf(out, "%llu\n", EXT2_I_SIZE(inode)); 759 else 760 fprintf(out, "%d\n", inode->i_size); 761 if (os == EXT2_OS_HURD) 762 fprintf(out, 763 "%sFile ACL: %d Directory ACL: %d Translator: %d\n", 764 prefix, 765 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0, 766 inode->osd1.hurd1.h_i_translator); 767 else 768 fprintf(out, "%sFile ACL: %llu Directory ACL: %d\n", 769 prefix, 770 inode->i_file_acl | ((long long) 771 (inode->osd2.linux2.l_i_file_acl_high) << 32), 772 LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0); 773 if (os == EXT2_OS_LINUX) 774 fprintf(out, "%sLinks: %d Blockcount: %llu\n", 775 prefix, inode->i_links_count, 776 (((unsigned long long) 777 inode->osd2.linux2.l_i_blocks_hi << 32)) + 778 inode->i_blocks); 779 else 780 fprintf(out, "%sLinks: %d Blockcount: %u\n", 781 prefix, inode->i_links_count, inode->i_blocks); 782 switch (os) { 783 case EXT2_OS_HURD: 784 frag = inode->osd2.hurd2.h_i_frag; 785 fsize = inode->osd2.hurd2.h_i_fsize; 786 break; 787 default: 788 frag = fsize = 0; 789 } 790 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n", 791 prefix, inode->i_faddr, frag, fsize); 792 if (is_large_inode && large_inode->i_extra_isize >= 24) { 793 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix, 794 inode->i_ctime, large_inode->i_ctime_extra, 795 time_to_string(inode->i_ctime)); 796 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix, 797 inode->i_atime, large_inode->i_atime_extra, 798 time_to_string(inode->i_atime)); 799 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix, 800 inode->i_mtime, large_inode->i_mtime_extra, 801 time_to_string(inode->i_mtime)); 802 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix, 803 large_inode->i_crtime, large_inode->i_crtime_extra, 804 time_to_string(large_inode->i_crtime)); 805 } else { 806 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime, 807 time_to_string(inode->i_ctime)); 808 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime, 809 time_to_string(inode->i_atime)); 810 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime, 811 time_to_string(inode->i_mtime)); 812 } 813 if (inode->i_dtime) 814 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime, 815 time_to_string(inode->i_dtime)); 816 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE) 817 internal_dump_inode_extra(out, prefix, inode_num, 818 (struct ext2_inode_large *) inode); 819 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0) 820 fprintf(out, "%sFast_link_dest: %.*s\n", prefix, 821 (int) inode->i_size, (char *)inode->i_block); 822 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) { 823 int major, minor; 824 const char *devnote; 825 826 if (inode->i_block[0]) { 827 major = (inode->i_block[0] >> 8) & 255; 828 minor = inode->i_block[0] & 255; 829 devnote = ""; 830 } else { 831 major = (inode->i_block[1] & 0xfff00) >> 8; 832 minor = ((inode->i_block[1] & 0xff) | 833 ((inode->i_block[1] >> 12) & 0xfff00)); 834 devnote = "(New-style) "; 835 } 836 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n", 837 devnote, major, minor, major, minor); 838 } else if (do_dump_blocks) { 839 if (inode->i_flags & EXT4_EXTENTS_FL) 840 dump_extents(out, prefix, inode_num, 841 DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0); 842 else 843 dump_blocks(out, prefix, inode_num); 844 } 845} 846 847static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode) 848{ 849 FILE *out; 850 851 out = open_pager(); 852 internal_dump_inode(out, "", inode_num, inode, 1); 853 close_pager(out); 854} 855 856void do_stat(int argc, char *argv[]) 857{ 858 ext2_ino_t inode; 859 struct ext2_inode * inode_buf; 860 861 if (check_fs_open(argv[0])) 862 return; 863 864 inode_buf = (struct ext2_inode *) 865 malloc(EXT2_INODE_SIZE(current_fs->super)); 866 if (!inode_buf) { 867 fprintf(stderr, "do_stat: can't allocate buffer\n"); 868 return; 869 } 870 871 if (common_inode_args_process(argc, argv, &inode, 0)) { 872 free(inode_buf); 873 return; 874 } 875 876 if (debugfs_read_inode_full(inode, inode_buf, argv[0], 877 EXT2_INODE_SIZE(current_fs->super))) { 878 free(inode_buf); 879 return; 880 } 881 882 dump_inode(inode, inode_buf); 883 free(inode_buf); 884 return; 885} 886 887void do_dump_extents(int argc, char **argv) 888{ 889 struct ext2_inode inode; 890 ext2_ino_t ino; 891 FILE *out; 892 int c, flags = 0; 893 int logical_width; 894 int physical_width; 895 896 reset_getopt(); 897 while ((c = getopt(argc, argv, "nl")) != EOF) { 898 switch (c) { 899 case 'n': 900 flags |= DUMP_NODE_EXTENTS; 901 break; 902 case 'l': 903 flags |= DUMP_LEAF_EXTENTS; 904 break; 905 } 906 } 907 908 if (argc != optind + 1) { 909 com_err(0, 0, "Usage: dump_extents [-n] [-l] file"); 910 return; 911 } 912 913 if (flags == 0) 914 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS; 915 flags |= DUMP_EXTENT_TABLE; 916 917 if (check_fs_open(argv[0])) 918 return; 919 920 ino = string_to_inode(argv[optind]); 921 if (ino == 0) 922 return; 923 924 if (debugfs_read_inode(ino, &inode, argv[0])) 925 return; 926 927 if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) { 928 fprintf(stderr, "%s: does not uses extent block maps\n", 929 argv[optind]); 930 return; 931 } 932 933 logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/ 934 current_fs->blocksize) + 1; 935 if (logical_width < 5) 936 logical_width = 5; 937 physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1; 938 if (physical_width < 5) 939 physical_width = 5; 940 941 out = open_pager(); 942 dump_extents(out, "", ino, flags, logical_width, physical_width); 943 close_pager(out); 944 return; 945} 946 947static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)), 948 blk64_t *blocknr, 949 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 950 blk64_t ref_block EXT2FS_ATTR((unused)), 951 int ref_offset EXT2FS_ATTR((unused)), 952 void *private EXT2FS_ATTR((unused))) 953{ 954 printf("%llu ", *blocknr); 955 return 0; 956} 957 958void do_blocks(int argc, char *argv[]) 959{ 960 ext2_ino_t inode; 961 962 if (check_fs_open(argv[0])) 963 return; 964 965 if (common_inode_args_process(argc, argv, &inode, 0)) { 966 return; 967 } 968 969 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL, 970 print_blocks_proc, NULL); 971 fputc('\n', stdout); 972 return; 973} 974 975void do_chroot(int argc, char *argv[]) 976{ 977 ext2_ino_t inode; 978 int retval; 979 980 if (common_inode_args_process(argc, argv, &inode, 0)) 981 return; 982 983 retval = ext2fs_check_directory(current_fs, inode); 984 if (retval) { 985 com_err(argv[1], retval, 0); 986 return; 987 } 988 root = inode; 989} 990 991#ifndef READ_ONLY 992void do_clri(int argc, char *argv[]) 993{ 994 ext2_ino_t inode; 995 struct ext2_inode inode_buf; 996 997 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW)) 998 return; 999 1000 if (debugfs_read_inode(inode, &inode_buf, argv[0])) 1001 return; 1002 memset(&inode_buf, 0, sizeof(inode_buf)); 1003 if (debugfs_write_inode(inode, &inode_buf, argv[0])) 1004 return; 1005} 1006 1007void do_freei(int argc, char *argv[]) 1008{ 1009 unsigned int len = 1; 1010 int err = 0; 1011 ext2_ino_t inode; 1012 1013 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]", 1014 CHECK_FS_RW | CHECK_FS_BITMAPS)) 1015 return; 1016 if (check_fs_read_write(argv[0])) 1017 return; 1018 1019 inode = string_to_inode(argv[1]); 1020 if (!inode) 1021 return; 1022 1023 if (argc == 3) { 1024 len = parse_ulong(argv[2], argv[0], "length", &err); 1025 if (err) 1026 return; 1027 } 1028 1029 if (len == 1 && 1030 !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode)) 1031 com_err(argv[0], 0, "Warning: inode already clear"); 1032 while (len-- > 0) 1033 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++); 1034 ext2fs_mark_ib_dirty(current_fs); 1035} 1036 1037void do_seti(int argc, char *argv[]) 1038{ 1039 unsigned int len = 1; 1040 int err = 0; 1041 ext2_ino_t inode; 1042 1043 if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]", 1044 CHECK_FS_RW | CHECK_FS_BITMAPS)) 1045 return; 1046 if (check_fs_read_write(argv[0])) 1047 return; 1048 1049 inode = string_to_inode(argv[1]); 1050 if (!inode) 1051 return; 1052 1053 if (argc == 3) { 1054 len = parse_ulong(argv[2], argv[0], "length", &err); 1055 if (err) 1056 return; 1057 } 1058 1059 if ((len == 1) && 1060 ext2fs_test_inode_bitmap2(current_fs->inode_map,inode)) 1061 com_err(argv[0], 0, "Warning: inode already set"); 1062 while (len-- > 0) 1063 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++); 1064 ext2fs_mark_ib_dirty(current_fs); 1065} 1066#endif /* READ_ONLY */ 1067 1068void do_testi(int argc, char *argv[]) 1069{ 1070 ext2_ino_t inode; 1071 1072 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS)) 1073 return; 1074 1075 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode)) 1076 printf("Inode %u is marked in use\n", inode); 1077 else 1078 printf("Inode %u is not in use\n", inode); 1079} 1080 1081#ifndef READ_ONLY 1082void do_freeb(int argc, char *argv[]) 1083{ 1084 blk64_t block; 1085 blk64_t count = 1; 1086 1087 if (common_block_args_process(argc, argv, &block, &count)) 1088 return; 1089 if (check_fs_read_write(argv[0])) 1090 return; 1091 while (count-- > 0) { 1092 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block)) 1093 com_err(argv[0], 0, "Warning: block %llu already clear", 1094 block); 1095 ext2fs_unmark_block_bitmap2(current_fs->block_map,block); 1096 block++; 1097 } 1098 ext2fs_mark_bb_dirty(current_fs); 1099} 1100 1101void do_setb(int argc, char *argv[]) 1102{ 1103 blk64_t block; 1104 blk64_t count = 1; 1105 1106 if (common_block_args_process(argc, argv, &block, &count)) 1107 return; 1108 if (check_fs_read_write(argv[0])) 1109 return; 1110 while (count-- > 0) { 1111 if (ext2fs_test_block_bitmap2(current_fs->block_map,block)) 1112 com_err(argv[0], 0, "Warning: block %llu already set", 1113 block); 1114 ext2fs_mark_block_bitmap2(current_fs->block_map,block); 1115 block++; 1116 } 1117 ext2fs_mark_bb_dirty(current_fs); 1118} 1119#endif /* READ_ONLY */ 1120 1121void do_testb(int argc, char *argv[]) 1122{ 1123 blk64_t block; 1124 blk64_t count = 1; 1125 1126 if (common_block_args_process(argc, argv, &block, &count)) 1127 return; 1128 while (count-- > 0) { 1129 if (ext2fs_test_block_bitmap2(current_fs->block_map,block)) 1130 printf("Block %llu marked in use\n", block); 1131 else 1132 printf("Block %llu not in use\n", block); 1133 block++; 1134 } 1135} 1136 1137#ifndef READ_ONLY 1138static void modify_u8(char *com, const char *prompt, 1139 const char *format, __u8 *val) 1140{ 1141 char buf[200]; 1142 unsigned long v; 1143 char *tmp; 1144 1145 sprintf(buf, format, *val); 1146 printf("%30s [%s] ", prompt, buf); 1147 if (!fgets(buf, sizeof(buf), stdin)) 1148 return; 1149 if (buf[strlen (buf) - 1] == '\n') 1150 buf[strlen (buf) - 1] = '\0'; 1151 if (!buf[0]) 1152 return; 1153 v = strtoul(buf, &tmp, 0); 1154 if (*tmp) 1155 com_err(com, 0, "Bad value - %s", buf); 1156 else 1157 *val = v; 1158} 1159 1160static void modify_u16(char *com, const char *prompt, 1161 const char *format, __u16 *val) 1162{ 1163 char buf[200]; 1164 unsigned long v; 1165 char *tmp; 1166 1167 sprintf(buf, format, *val); 1168 printf("%30s [%s] ", prompt, buf); 1169 if (!fgets(buf, sizeof(buf), stdin)) 1170 return; 1171 if (buf[strlen (buf) - 1] == '\n') 1172 buf[strlen (buf) - 1] = '\0'; 1173 if (!buf[0]) 1174 return; 1175 v = strtoul(buf, &tmp, 0); 1176 if (*tmp) 1177 com_err(com, 0, "Bad value - %s", buf); 1178 else 1179 *val = v; 1180} 1181 1182static void modify_u32(char *com, const char *prompt, 1183 const char *format, __u32 *val) 1184{ 1185 char buf[200]; 1186 unsigned long v; 1187 char *tmp; 1188 1189 sprintf(buf, format, *val); 1190 printf("%30s [%s] ", prompt, buf); 1191 if (!fgets(buf, sizeof(buf), stdin)) 1192 return; 1193 if (buf[strlen (buf) - 1] == '\n') 1194 buf[strlen (buf) - 1] = '\0'; 1195 if (!buf[0]) 1196 return; 1197 v = strtoul(buf, &tmp, 0); 1198 if (*tmp) 1199 com_err(com, 0, "Bad value - %s", buf); 1200 else 1201 *val = v; 1202} 1203 1204 1205void do_modify_inode(int argc, char *argv[]) 1206{ 1207 struct ext2_inode inode; 1208 ext2_ino_t inode_num; 1209 int i; 1210 unsigned char *frag, *fsize; 1211 char buf[80]; 1212 int os; 1213 const char *hex_format = "0x%x"; 1214 const char *octal_format = "0%o"; 1215 const char *decimal_format = "%d"; 1216 const char *unsignedlong_format = "%lu"; 1217 1218 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW)) 1219 return; 1220 1221 os = current_fs->super->s_creator_os; 1222 1223 if (debugfs_read_inode(inode_num, &inode, argv[1])) 1224 return; 1225 1226 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode); 1227 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid); 1228 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid); 1229 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size); 1230 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime); 1231 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime); 1232 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime); 1233 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime); 1234 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count); 1235 if (os == EXT2_OS_LINUX) 1236 modify_u16(argv[0], "Block count high", unsignedlong_format, 1237 &inode.osd2.linux2.l_i_blocks_hi); 1238 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks); 1239 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags); 1240 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation); 1241#if 0 1242 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1); 1243#endif 1244 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl); 1245 if (LINUX_S_ISDIR(inode.i_mode)) 1246 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl); 1247 else 1248 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high); 1249 1250 if (os == EXT2_OS_HURD) 1251 modify_u32(argv[0], "Translator Block", 1252 decimal_format, &inode.osd1.hurd1.h_i_translator); 1253 1254 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr); 1255 switch (os) { 1256 case EXT2_OS_HURD: 1257 frag = &inode.osd2.hurd2.h_i_frag; 1258 fsize = &inode.osd2.hurd2.h_i_fsize; 1259 break; 1260 default: 1261 frag = fsize = 0; 1262 } 1263 if (frag) 1264 modify_u8(argv[0], "Fragment number", decimal_format, frag); 1265 if (fsize) 1266 modify_u8(argv[0], "Fragment size", decimal_format, fsize); 1267 1268 for (i=0; i < EXT2_NDIR_BLOCKS; i++) { 1269 sprintf(buf, "Direct Block #%d", i); 1270 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]); 1271 } 1272 modify_u32(argv[0], "Indirect Block", decimal_format, 1273 &inode.i_block[EXT2_IND_BLOCK]); 1274 modify_u32(argv[0], "Double Indirect Block", decimal_format, 1275 &inode.i_block[EXT2_DIND_BLOCK]); 1276 modify_u32(argv[0], "Triple Indirect Block", decimal_format, 1277 &inode.i_block[EXT2_TIND_BLOCK]); 1278 if (debugfs_write_inode(inode_num, &inode, argv[1])) 1279 return; 1280} 1281#endif /* READ_ONLY */ 1282 1283void do_change_working_dir(int argc, char *argv[]) 1284{ 1285 ext2_ino_t inode; 1286 int retval; 1287 1288 if (common_inode_args_process(argc, argv, &inode, 0)) 1289 return; 1290 1291 retval = ext2fs_check_directory(current_fs, inode); 1292 if (retval) { 1293 com_err(argv[1], retval, 0); 1294 return; 1295 } 1296 cwd = inode; 1297 return; 1298} 1299 1300void do_print_working_directory(int argc, char *argv[]) 1301{ 1302 int retval; 1303 char *pathname = NULL; 1304 1305 if (common_args_process(argc, argv, 1, 1, 1306 "print_working_directory", "", 0)) 1307 return; 1308 1309 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname); 1310 if (retval) { 1311 com_err(argv[0], retval, 1312 "while trying to get pathname of cwd"); 1313 } 1314 printf("[pwd] INODE: %6u PATH: %s\n", 1315 cwd, pathname ? pathname : "NULL"); 1316 if (pathname) { 1317 free(pathname); 1318 pathname = NULL; 1319 } 1320 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname); 1321 if (retval) { 1322 com_err(argv[0], retval, 1323 "while trying to get pathname of root"); 1324 } 1325 printf("[root] INODE: %6u PATH: %s\n", 1326 root, pathname ? pathname : "NULL"); 1327 if (pathname) { 1328 free(pathname); 1329 pathname = NULL; 1330 } 1331 return; 1332} 1333 1334#ifndef READ_ONLY 1335static void make_link(char *sourcename, char *destname) 1336{ 1337 ext2_ino_t ino; 1338 struct ext2_inode inode; 1339 int retval; 1340 ext2_ino_t dir; 1341 char *dest, *cp, *base_name; 1342 1343 /* 1344 * Get the source inode 1345 */ 1346 ino = string_to_inode(sourcename); 1347 if (!ino) 1348 return; 1349 base_name = strrchr(sourcename, '/'); 1350 if (base_name) 1351 base_name++; 1352 else 1353 base_name = sourcename; 1354 /* 1355 * Figure out the destination. First see if it exists and is 1356 * a directory. 1357 */ 1358 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir))) 1359 dest = base_name; 1360 else { 1361 /* 1362 * OK, it doesn't exist. See if it is 1363 * '<dir>/basename' or 'basename' 1364 */ 1365 cp = strrchr(destname, '/'); 1366 if (cp) { 1367 *cp = 0; 1368 dir = string_to_inode(destname); 1369 if (!dir) 1370 return; 1371 dest = cp+1; 1372 } else { 1373 dir = cwd; 1374 dest = destname; 1375 } 1376 } 1377 1378 if (debugfs_read_inode(ino, &inode, sourcename)) 1379 return; 1380 1381 retval = ext2fs_link(current_fs, dir, dest, ino, 1382 ext2_file_type(inode.i_mode)); 1383 if (retval) 1384 com_err("make_link", retval, 0); 1385 return; 1386} 1387 1388 1389void do_link(int argc, char *argv[]) 1390{ 1391 if (common_args_process(argc, argv, 3, 3, "link", 1392 "<source file> <dest_name>", CHECK_FS_RW)) 1393 return; 1394 1395 make_link(argv[1], argv[2]); 1396} 1397 1398static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr, 1399 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 1400 blk64_t ref_block EXT2FS_ATTR((unused)), 1401 int ref_offset EXT2FS_ATTR((unused)), 1402 void *private EXT2FS_ATTR((unused))) 1403{ 1404 blk64_t block; 1405 1406 block = *blocknr; 1407 ext2fs_block_alloc_stats2(fs, block, +1); 1408 return 0; 1409} 1410 1411void do_undel(int argc, char *argv[]) 1412{ 1413 ext2_ino_t ino; 1414 struct ext2_inode inode; 1415 1416 if (common_args_process(argc, argv, 2, 3, "undelete", 1417 "<inode_num> [dest_name]", 1418 CHECK_FS_RW | CHECK_FS_BITMAPS)) 1419 return; 1420 1421 ino = string_to_inode(argv[1]); 1422 if (!ino) 1423 return; 1424 1425 if (debugfs_read_inode(ino, &inode, argv[1])) 1426 return; 1427 1428 if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) { 1429 com_err(argv[1], 0, "Inode is not marked as deleted"); 1430 return; 1431 } 1432 1433 /* 1434 * XXX this function doesn't handle changing the links count on the 1435 * parent directory when undeleting a directory. 1436 */ 1437 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1; 1438 inode.i_dtime = 0; 1439 1440 if (debugfs_write_inode(ino, &inode, argv[0])) 1441 return; 1442 1443 ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL, 1444 mark_blocks_proc, NULL); 1445 1446 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0); 1447 1448 if (argc > 2) 1449 make_link(argv[1], argv[2]); 1450} 1451 1452static void unlink_file_by_name(char *filename) 1453{ 1454 int retval; 1455 ext2_ino_t dir; 1456 char *base_name; 1457 1458 base_name = strrchr(filename, '/'); 1459 if (base_name) { 1460 *base_name++ = '\0'; 1461 dir = string_to_inode(filename); 1462 if (!dir) 1463 return; 1464 } else { 1465 dir = cwd; 1466 base_name = filename; 1467 } 1468 retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0); 1469 if (retval) 1470 com_err("unlink_file_by_name", retval, 0); 1471 return; 1472} 1473 1474void do_unlink(int argc, char *argv[]) 1475{ 1476 if (common_args_process(argc, argv, 2, 2, "link", 1477 "<pathname>", CHECK_FS_RW)) 1478 return; 1479 1480 unlink_file_by_name(argv[1]); 1481} 1482#endif /* READ_ONLY */ 1483 1484void do_find_free_block(int argc, char *argv[]) 1485{ 1486 blk64_t free_blk, goal, first_free = 0; 1487 int count; 1488 errcode_t retval; 1489 char *tmp; 1490 1491 if ((argc > 3) || (argc==2 && *argv[1] == '?')) { 1492 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]"); 1493 return; 1494 } 1495 if (check_fs_open(argv[0])) 1496 return; 1497 1498 if (argc > 1) { 1499 count = strtol(argv[1],&tmp,0); 1500 if (*tmp) { 1501 com_err(argv[0], 0, "Bad count - %s", argv[1]); 1502 return; 1503 } 1504 } else 1505 count = 1; 1506 1507 if (argc > 2) { 1508 goal = strtol(argv[2], &tmp, 0); 1509 if (*tmp) { 1510 com_err(argv[0], 0, "Bad goal - %s", argv[1]); 1511 return; 1512 } 1513 } 1514 else 1515 goal = current_fs->super->s_first_data_block; 1516 1517 printf("Free blocks found: "); 1518 free_blk = goal - 1; 1519 while (count-- > 0) { 1520 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0, 1521 &free_blk); 1522 if (first_free) { 1523 if (first_free == free_blk) 1524 break; 1525 } else 1526 first_free = free_blk; 1527 if (retval) { 1528 com_err("ext2fs_new_block", retval, 0); 1529 return; 1530 } else 1531 printf("%llu ", free_blk); 1532 } 1533 printf("\n"); 1534} 1535 1536void do_find_free_inode(int argc, char *argv[]) 1537{ 1538 ext2_ino_t free_inode, dir; 1539 int mode; 1540 int retval; 1541 char *tmp; 1542 1543 if (argc > 3 || (argc>1 && *argv[1] == '?')) { 1544 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]"); 1545 return; 1546 } 1547 if (check_fs_open(argv[0])) 1548 return; 1549 1550 if (argc > 1) { 1551 dir = strtol(argv[1], &tmp, 0); 1552 if (*tmp) { 1553 com_err(argv[0], 0, "Bad dir - %s", argv[1]); 1554 return; 1555 } 1556 } 1557 else 1558 dir = root; 1559 if (argc > 2) { 1560 mode = strtol(argv[2], &tmp, 0); 1561 if (*tmp) { 1562 com_err(argv[0], 0, "Bad mode - %s", argv[2]); 1563 return; 1564 } 1565 } else 1566 mode = 010755; 1567 1568 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode); 1569 if (retval) 1570 com_err("ext2fs_new_inode", retval, 0); 1571 else 1572 printf("Free inode found: %u\n", free_inode); 1573} 1574 1575#ifndef READ_ONLY 1576static errcode_t copy_file(int fd, ext2_ino_t newfile, int bufsize, int make_holes) 1577{ 1578 ext2_file_t e2_file; 1579 errcode_t retval; 1580 int got; 1581 unsigned int written; 1582 char *buf; 1583 char *ptr; 1584 char *zero_buf; 1585 int cmp; 1586 1587 retval = ext2fs_file_open(current_fs, newfile, 1588 EXT2_FILE_WRITE, &e2_file); 1589 if (retval) 1590 return retval; 1591 1592 if (!(buf = (char *) malloc(bufsize))){ 1593 com_err("copy_file", errno, "can't allocate buffer\n"); 1594 return; 1595 } 1596 1597 /* This is used for checking whether the whole block is zero */ 1598 retval = ext2fs_get_memzero(bufsize, &zero_buf); 1599 if (retval) { 1600 com_err("copy_file", retval, "can't allocate buffer\n"); 1601 free(buf); 1602 return retval; 1603 } 1604 1605 while (1) { 1606 got = read(fd, buf, bufsize); 1607 if (got == 0) 1608 break; 1609 if (got < 0) { 1610 retval = errno; 1611 goto fail; 1612 } 1613 ptr = buf; 1614 1615 /* Sparse copy */ 1616 if (make_holes) { 1617 /* Check whether all is zero */ 1618 cmp = memcmp(ptr, zero_buf, got); 1619 if (cmp == 0) { 1620 /* The whole block is zero, make a hole */ 1621 retval = ext2fs_file_lseek(e2_file, got, EXT2_SEEK_CUR, NULL); 1622 if (retval) 1623 goto fail; 1624 got = 0; 1625 } 1626 } 1627 1628 /* Normal copy */ 1629 while (got > 0) { 1630 retval = ext2fs_file_write(e2_file, ptr, 1631 got, &written); 1632 if (retval) 1633 goto fail; 1634 1635 got -= written; 1636 ptr += written; 1637 } 1638 } 1639 free(buf); 1640 ext2fs_free_mem(&zero_buf); 1641 retval = ext2fs_file_close(e2_file); 1642 return retval; 1643 1644fail: 1645 free(buf); 1646 ext2fs_free_mem(&zero_buf); 1647 (void) ext2fs_file_close(e2_file); 1648 return retval; 1649} 1650 1651 1652void do_write(int argc, char *argv[]) 1653{ 1654 int fd; 1655 struct stat statbuf; 1656 ext2_ino_t newfile; 1657 errcode_t retval; 1658 struct ext2_inode inode; 1659 int bufsize = IO_BUFSIZE; 1660 int make_holes = 0; 1661 1662 if (common_args_process(argc, argv, 3, 3, "write", 1663 "<native file> <new file>", CHECK_FS_RW)) 1664 return; 1665 1666 fd = open(argv[1], O_RDONLY); 1667 if (fd < 0) { 1668 com_err(argv[1], errno, 0); 1669 return; 1670 } 1671 if (fstat(fd, &statbuf) < 0) { 1672 com_err(argv[1], errno, 0); 1673 close(fd); 1674 return; 1675 } 1676 1677 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile); 1678 if (retval == 0) { 1679 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]); 1680 close(fd); 1681 return; 1682 } 1683 1684 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile); 1685 if (retval) { 1686 com_err(argv[0], retval, 0); 1687 close(fd); 1688 return; 1689 } 1690 printf("Allocated inode: %u\n", newfile); 1691 retval = ext2fs_link(current_fs, cwd, argv[2], newfile, 1692 EXT2_FT_REG_FILE); 1693 if (retval == EXT2_ET_DIR_NO_SPACE) { 1694 retval = ext2fs_expand_dir(current_fs, cwd); 1695 if (retval) { 1696 com_err(argv[0], retval, "while expanding directory"); 1697 close(fd); 1698 return; 1699 } 1700 retval = ext2fs_link(current_fs, cwd, argv[2], newfile, 1701 EXT2_FT_REG_FILE); 1702 } 1703 if (retval) { 1704 com_err(argv[2], retval, 0); 1705 close(fd); 1706 return; 1707 } 1708 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile)) 1709 com_err(argv[0], 0, "Warning: inode already set"); 1710 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0); 1711 memset(&inode, 0, sizeof(inode)); 1712 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG; 1713 inode.i_atime = inode.i_ctime = inode.i_mtime = 1714 current_fs->now ? current_fs->now : time(0); 1715 inode.i_links_count = 1; 1716 inode.i_size = statbuf.st_size; 1717 if (current_fs->super->s_feature_incompat & 1718 EXT3_FEATURE_INCOMPAT_EXTENTS) { 1719 int i; 1720 struct ext3_extent_header *eh; 1721 1722 eh = (struct ext3_extent_header *) &inode.i_block[0]; 1723 eh->eh_depth = 0; 1724 eh->eh_entries = 0; 1725 eh->eh_magic = EXT3_EXT_MAGIC; 1726 i = (sizeof(inode.i_block) - sizeof(*eh)) / 1727 sizeof(struct ext3_extent); 1728 eh->eh_max = ext2fs_cpu_to_le16(i); 1729 inode.i_flags |= EXT4_EXTENTS_FL; 1730 } 1731 if (debugfs_write_new_inode(newfile, &inode, argv[0])) { 1732 close(fd); 1733 return; 1734 } 1735 if (LINUX_S_ISREG(inode.i_mode)) { 1736 if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) { 1737 make_holes = 1; 1738 /* 1739 * Use I/O blocksize as buffer size when 1740 * copying sparse files. 1741 */ 1742 bufsize = statbuf.st_blksize; 1743 } 1744 retval = copy_file(fd, newfile, bufsize, make_holes); 1745 if (retval) 1746 com_err("copy_file", retval, 0); 1747 } 1748 close(fd); 1749} 1750 1751void do_mknod(int argc, char *argv[]) 1752{ 1753 unsigned long mode, major, minor; 1754 ext2_ino_t newfile; 1755 errcode_t retval; 1756 struct ext2_inode inode; 1757 int filetype, nr; 1758 1759 if (check_fs_open(argv[0])) 1760 return; 1761 if (argc < 3 || argv[2][1]) { 1762 usage: 1763 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]"); 1764 return; 1765 } 1766 mode = minor = major = 0; 1767 switch (argv[2][0]) { 1768 case 'p': 1769 mode = LINUX_S_IFIFO; 1770 filetype = EXT2_FT_FIFO; 1771 nr = 3; 1772 break; 1773 case 'c': 1774 mode = LINUX_S_IFCHR; 1775 filetype = EXT2_FT_CHRDEV; 1776 nr = 5; 1777 break; 1778 case 'b': 1779 mode = LINUX_S_IFBLK; 1780 filetype = EXT2_FT_BLKDEV; 1781 nr = 5; 1782 break; 1783 default: 1784 filetype = 0; 1785 nr = 0; 1786 } 1787 if (nr == 5) { 1788 major = strtoul(argv[3], argv+3, 0); 1789 minor = strtoul(argv[4], argv+4, 0); 1790 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0]) 1791 nr = 0; 1792 } 1793 if (argc != nr) 1794 goto usage; 1795 if (check_fs_read_write(argv[0])) 1796 return; 1797 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile); 1798 if (retval) { 1799 com_err(argv[0], retval, 0); 1800 return; 1801 } 1802 printf("Allocated inode: %u\n", newfile); 1803 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype); 1804 if (retval == EXT2_ET_DIR_NO_SPACE) { 1805 retval = ext2fs_expand_dir(current_fs, cwd); 1806 if (retval) { 1807 com_err(argv[0], retval, "while expanding directory"); 1808 return; 1809 } 1810 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, 1811 filetype); 1812 } 1813 if (retval) { 1814 com_err(argv[1], retval, 0); 1815 return; 1816 } 1817 if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile)) 1818 com_err(argv[0], 0, "Warning: inode already set"); 1819 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0); 1820 memset(&inode, 0, sizeof(inode)); 1821 inode.i_mode = mode; 1822 inode.i_atime = inode.i_ctime = inode.i_mtime = 1823 current_fs->now ? current_fs->now : time(0); 1824 if ((major < 256) && (minor < 256)) { 1825 inode.i_block[0] = major*256+minor; 1826 inode.i_block[1] = 0; 1827 } else { 1828 inode.i_block[0] = 0; 1829 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12); 1830 } 1831 inode.i_links_count = 1; 1832 if (debugfs_write_new_inode(newfile, &inode, argv[0])) 1833 return; 1834} 1835 1836void do_mkdir(int argc, char *argv[]) 1837{ 1838 char *cp; 1839 ext2_ino_t parent; 1840 char *name; 1841 errcode_t retval; 1842 1843 if (common_args_process(argc, argv, 2, 2, "mkdir", 1844 "<filename>", CHECK_FS_RW)) 1845 return; 1846 1847 cp = strrchr(argv[1], '/'); 1848 if (cp) { 1849 *cp = 0; 1850 parent = string_to_inode(argv[1]); 1851 if (!parent) { 1852 com_err(argv[1], ENOENT, 0); 1853 return; 1854 } 1855 name = cp+1; 1856 } else { 1857 parent = cwd; 1858 name = argv[1]; 1859 } 1860 1861try_again: 1862 retval = ext2fs_mkdir(current_fs, parent, 0, name); 1863 if (retval == EXT2_ET_DIR_NO_SPACE) { 1864 retval = ext2fs_expand_dir(current_fs, parent); 1865 if (retval) { 1866 com_err(argv[0], retval, "while expanding directory"); 1867 return; 1868 } 1869 goto try_again; 1870 } 1871 if (retval) { 1872 com_err("ext2fs_mkdir", retval, 0); 1873 return; 1874 } 1875 1876} 1877 1878static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr, 1879 e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)), 1880 blk64_t ref_block EXT2FS_ATTR((unused)), 1881 int ref_offset EXT2FS_ATTR((unused)), 1882 void *private EXT2FS_ATTR((unused))) 1883{ 1884 blk64_t block; 1885 1886 block = *blocknr; 1887 ext2fs_block_alloc_stats2(fs, block, -1); 1888 return 0; 1889} 1890 1891static void kill_file_by_inode(ext2_ino_t inode) 1892{ 1893 struct ext2_inode inode_buf; 1894 1895 if (debugfs_read_inode(inode, &inode_buf, 0)) 1896 return; 1897 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0); 1898 if (debugfs_write_inode(inode, &inode_buf, 0)) 1899 return; 1900 if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) 1901 return; 1902 1903 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL, 1904 release_blocks_proc, NULL); 1905 printf("\n"); 1906 ext2fs_inode_alloc_stats2(current_fs, inode, -1, 1907 LINUX_S_ISDIR(inode_buf.i_mode)); 1908} 1909 1910 1911void do_kill_file(int argc, char *argv[]) 1912{ 1913 ext2_ino_t inode_num; 1914 1915 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW)) 1916 return; 1917 1918 kill_file_by_inode(inode_num); 1919} 1920 1921void do_rm(int argc, char *argv[]) 1922{ 1923 int retval; 1924 ext2_ino_t inode_num; 1925 struct ext2_inode inode; 1926 1927 if (common_args_process(argc, argv, 2, 2, "rm", 1928 "<filename>", CHECK_FS_RW)) 1929 return; 1930 1931 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1932 if (retval) { 1933 com_err(argv[0], retval, "while trying to resolve filename"); 1934 return; 1935 } 1936 1937 if (debugfs_read_inode(inode_num, &inode, argv[0])) 1938 return; 1939 1940 if (LINUX_S_ISDIR(inode.i_mode)) { 1941 com_err(argv[0], 0, "file is a directory"); 1942 return; 1943 } 1944 1945 --inode.i_links_count; 1946 if (debugfs_write_inode(inode_num, &inode, argv[0])) 1947 return; 1948 1949 unlink_file_by_name(argv[1]); 1950 if (inode.i_links_count == 0) 1951 kill_file_by_inode(inode_num); 1952} 1953 1954struct rd_struct { 1955 ext2_ino_t parent; 1956 int empty; 1957}; 1958 1959static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)), 1960 int entry EXT2FS_ATTR((unused)), 1961 struct ext2_dir_entry *dirent, 1962 int offset EXT2FS_ATTR((unused)), 1963 int blocksize EXT2FS_ATTR((unused)), 1964 char *buf EXT2FS_ATTR((unused)), 1965 void *private) 1966{ 1967 struct rd_struct *rds = (struct rd_struct *) private; 1968 1969 if (dirent->inode == 0) 1970 return 0; 1971 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.')) 1972 return 0; 1973 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') && 1974 (dirent->name[1] == '.')) { 1975 rds->parent = dirent->inode; 1976 return 0; 1977 } 1978 rds->empty = 0; 1979 return 0; 1980} 1981 1982void do_rmdir(int argc, char *argv[]) 1983{ 1984 int retval; 1985 ext2_ino_t inode_num; 1986 struct ext2_inode inode; 1987 struct rd_struct rds; 1988 1989 if (common_args_process(argc, argv, 2, 2, "rmdir", 1990 "<filename>", CHECK_FS_RW)) 1991 return; 1992 1993 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1994 if (retval) { 1995 com_err(argv[0], retval, "while trying to resolve filename"); 1996 return; 1997 } 1998 1999 if (debugfs_read_inode(inode_num, &inode, argv[0])) 2000 return; 2001 2002 if (!LINUX_S_ISDIR(inode.i_mode)) { 2003 com_err(argv[0], 0, "file is not a directory"); 2004 return; 2005 } 2006 2007 rds.parent = 0; 2008 rds.empty = 1; 2009 2010 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0, 2011 0, rmdir_proc, &rds); 2012 if (retval) { 2013 com_err(argv[0], retval, "while iterating over directory"); 2014 return; 2015 } 2016 if (rds.empty == 0) { 2017 com_err(argv[0], 0, "directory not empty"); 2018 return; 2019 } 2020 2021 inode.i_links_count = 0; 2022 if (debugfs_write_inode(inode_num, &inode, argv[0])) 2023 return; 2024 2025 unlink_file_by_name(argv[1]); 2026 kill_file_by_inode(inode_num); 2027 2028 if (rds.parent) { 2029 if (debugfs_read_inode(rds.parent, &inode, argv[0])) 2030 return; 2031 if (inode.i_links_count > 1) 2032 inode.i_links_count--; 2033 if (debugfs_write_inode(rds.parent, &inode, argv[0])) 2034 return; 2035 } 2036} 2037#endif /* READ_ONLY */ 2038 2039void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)), 2040 char *argv[] EXT2FS_ATTR((unused))) 2041{ 2042 if (current_fs) 2043 printf("Open mode: read-%s\n", 2044 current_fs->flags & EXT2_FLAG_RW ? "write" : "only"); 2045 printf("Filesystem in use: %s\n", 2046 current_fs ? current_fs->device_name : "--none--"); 2047} 2048 2049#ifndef READ_ONLY 2050void do_expand_dir(int argc, char *argv[]) 2051{ 2052 ext2_ino_t inode; 2053 int retval; 2054 2055 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW)) 2056 return; 2057 2058 retval = ext2fs_expand_dir(current_fs, inode); 2059 if (retval) 2060 com_err("ext2fs_expand_dir", retval, 0); 2061 return; 2062} 2063 2064void do_features(int argc, char *argv[]) 2065{ 2066 int i; 2067 2068 if (check_fs_open(argv[0])) 2069 return; 2070 2071 if ((argc != 1) && check_fs_read_write(argv[0])) 2072 return; 2073 for (i=1; i < argc; i++) { 2074 if (e2p_edit_feature(argv[i], 2075 ¤t_fs->super->s_feature_compat, 0)) 2076 com_err(argv[0], 0, "Unknown feature: %s\n", 2077 argv[i]); 2078 else 2079 ext2fs_mark_super_dirty(current_fs); 2080 } 2081 print_features(current_fs->super, stdout); 2082} 2083#endif /* READ_ONLY */ 2084 2085void do_bmap(int argc, char *argv[]) 2086{ 2087 ext2_ino_t ino; 2088 blk64_t blk, pblk; 2089 int err; 2090 errcode_t errcode; 2091 2092 if (common_args_process(argc, argv, 3, 3, argv[0], 2093 "<file> logical_blk", 0)) 2094 return; 2095 2096 ino = string_to_inode(argv[1]); 2097 if (!ino) 2098 return; 2099 blk = parse_ulong(argv[2], argv[0], "logical_block", &err); 2100 2101 errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk); 2102 if (errcode) { 2103 com_err("argv[0]", errcode, 2104 "while mapping logical block %llu\n", blk); 2105 return; 2106 } 2107 printf("%llu\n", pblk); 2108} 2109 2110void do_imap(int argc, char *argv[]) 2111{ 2112 ext2_ino_t ino; 2113 unsigned long group, block, block_nr, offset; 2114 2115 if (common_args_process(argc, argv, 2, 2, argv[0], 2116 "<file>", 0)) 2117 return; 2118 ino = string_to_inode(argv[1]); 2119 if (!ino) 2120 return; 2121 2122 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super); 2123 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) * 2124 EXT2_INODE_SIZE(current_fs->super); 2125 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super); 2126 if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) { 2127 com_err(argv[0], 0, "Inode table for group %lu is missing\n", 2128 group); 2129 return; 2130 } 2131 block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) + 2132 block; 2133 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1); 2134 2135 printf("Inode %d is part of block group %lu\n" 2136 "\tlocated at block %lu, offset 0x%04lx\n", ino, group, 2137 block_nr, offset); 2138 2139} 2140 2141#ifndef READ_ONLY 2142void do_set_current_time(int argc, char *argv[]) 2143{ 2144 time_t now; 2145 2146 if (common_args_process(argc, argv, 2, 2, argv[0], 2147 "<time>", 0)) 2148 return; 2149 2150 now = string_to_time(argv[1]); 2151 if (now == ((time_t) -1)) { 2152 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n", 2153 argv[1]); 2154 return; 2155 2156 } else { 2157 printf("Setting current time to %s\n", time_to_string(now)); 2158 current_fs->now = now; 2159 } 2160} 2161#endif /* READ_ONLY */ 2162 2163static int find_supp_feature(__u32 *supp, int feature_type, char *name) 2164{ 2165 int compat, bit, ret; 2166 unsigned int feature_mask; 2167 2168 if (name) { 2169 if (feature_type == E2P_FS_FEATURE) 2170 ret = e2p_string2feature(name, &compat, &feature_mask); 2171 else 2172 ret = e2p_jrnl_string2feature(name, &compat, 2173 &feature_mask); 2174 if (ret) 2175 return ret; 2176 2177 if (!(supp[compat] & feature_mask)) 2178 return 1; 2179 } else { 2180 for (compat = 0; compat < 3; compat++) { 2181 for (bit = 0, feature_mask = 1; bit < 32; 2182 bit++, feature_mask <<= 1) { 2183 if (supp[compat] & feature_mask) { 2184 if (feature_type == E2P_FS_FEATURE) 2185 fprintf(stdout, " %s", 2186 e2p_feature2string(compat, 2187 feature_mask)); 2188 else 2189 fprintf(stdout, " %s", 2190 e2p_jrnl_feature2string(compat, 2191 feature_mask)); 2192 } 2193 } 2194 } 2195 fprintf(stdout, "\n"); 2196 } 2197 2198 return 0; 2199} 2200 2201void do_supported_features(int argc, char *argv[]) 2202{ 2203 int ret; 2204 __u32 supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP, 2205 EXT2_LIB_FEATURE_INCOMPAT_SUPP, 2206 EXT2_LIB_FEATURE_RO_COMPAT_SUPP }; 2207 __u32 jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES, 2208 JFS_KNOWN_INCOMPAT_FEATURES, 2209 JFS_KNOWN_ROCOMPAT_FEATURES }; 2210 2211 if (argc > 1) { 2212 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]); 2213 if (ret) { 2214 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, 2215 argv[1]); 2216 } 2217 if (ret) 2218 com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]); 2219 else 2220 fprintf(stdout, "Supported feature: %s\n", argv[1]); 2221 } else { 2222 fprintf(stdout, "Supported features:"); 2223 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL); 2224 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL); 2225 } 2226} 2227 2228#ifndef READ_ONLY 2229void do_punch(int argc, char *argv[]) 2230{ 2231 ext2_ino_t ino; 2232 blk64_t start, end; 2233 int err; 2234 errcode_t errcode; 2235 2236 if (common_args_process(argc, argv, 3, 4, argv[0], 2237 "<file> start_blk [end_blk]", 2238 CHECK_FS_RW | CHECK_FS_BITMAPS)) 2239 return; 2240 2241 ino = string_to_inode(argv[1]); 2242 if (!ino) 2243 return; 2244 start = parse_ulong(argv[2], argv[0], "logical_block", &err); 2245 if (argc == 4) 2246 end = parse_ulong(argv[3], argv[0], "logical_block", &err); 2247 else 2248 end = ~0; 2249 2250 errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end); 2251 2252 if (errcode) { 2253 com_err(argv[0], errcode, 2254 "while truncating inode %u from %llu to %llu\n", ino, 2255 (unsigned long long) start, (unsigned long long) end); 2256 return; 2257 } 2258} 2259#endif /* READ_ONLY */ 2260 2261void do_symlink(int argc, char *argv[]) 2262{ 2263 char *cp; 2264 ext2_ino_t parent; 2265 char *name, *target; 2266 errcode_t retval; 2267 2268 if (common_args_process(argc, argv, 3, 3, "symlink", 2269 "<filename> <target>", CHECK_FS_RW)) 2270 return; 2271 2272 cp = strrchr(argv[1], '/'); 2273 if (cp) { 2274 *cp = 0; 2275 parent = string_to_inode(argv[1]); 2276 if (!parent) { 2277 com_err(argv[1], ENOENT, 0); 2278 return; 2279 } 2280 name = cp+1; 2281 } else { 2282 parent = cwd; 2283 name = argv[1]; 2284 } 2285 target = argv[2]; 2286 2287try_again: 2288 retval = ext2fs_symlink(current_fs, parent, 0, name, target); 2289 if (retval == EXT2_ET_DIR_NO_SPACE) { 2290 retval = ext2fs_expand_dir(current_fs, parent); 2291 if (retval) { 2292 com_err(argv[0], retval, "while expanding directory"); 2293 return; 2294 } 2295 goto try_again; 2296 } 2297 if (retval) { 2298 com_err("ext2fs_symlink", retval, 0); 2299 return; 2300 } 2301 2302} 2303 2304void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[]) 2305{ 2306 struct ext2_super_block *sb; 2307 struct mmp_struct *mmp_s; 2308 time_t t; 2309 errcode_t retval = 0; 2310 2311 if (check_fs_open(argv[0])) 2312 return; 2313 2314 sb = current_fs->super; 2315 2316 if (current_fs->mmp_buf == NULL) { 2317 retval = ext2fs_get_mem(current_fs->blocksize, 2318 ¤t_fs->mmp_buf); 2319 if (retval) { 2320 com_err(argv[0], retval, "allocating MMP buffer.\n"); 2321 return; 2322 } 2323 } 2324 2325 mmp_s = current_fs->mmp_buf; 2326 2327 retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block, 2328 current_fs->mmp_buf); 2329 if (retval) { 2330 com_err(argv[0], retval, "reading MMP block.\n"); 2331 return; 2332 } 2333 2334 t = mmp_s->mmp_time; 2335 fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block); 2336 fprintf(stdout, "update_interval: %d\n", 2337 current_fs->super->s_mmp_update_interval); 2338 fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval); 2339 fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq); 2340 fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t)); 2341 fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename); 2342 fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname); 2343 fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic); 2344} 2345 2346static int source_file(const char *cmd_file, int ss_idx) 2347{ 2348 FILE *f; 2349 char buf[BUFSIZ]; 2350 char *cp; 2351 int exit_status = 0; 2352 int retval; 2353 2354 if (strcmp(cmd_file, "-") == 0) 2355 f = stdin; 2356 else { 2357 f = fopen(cmd_file, "r"); 2358 if (!f) { 2359 perror(cmd_file); 2360 exit(1); 2361 } 2362 } 2363 fflush(stdout); 2364 fflush(stderr); 2365 setbuf(stdout, NULL); 2366 setbuf(stderr, NULL); 2367 while (!feof(f)) { 2368 if (fgets(buf, sizeof(buf), f) == NULL) 2369 break; 2370 cp = strchr(buf, '\n'); 2371 if (cp) 2372 *cp = 0; 2373 cp = strchr(buf, '\r'); 2374 if (cp) 2375 *cp = 0; 2376 printf("debugfs: %s\n", buf); 2377 retval = ss_execute_line(ss_idx, buf); 2378 if (retval) { 2379 ss_perror(ss_idx, retval, buf); 2380 exit_status++; 2381 } 2382 } 2383 if (f != stdin) 2384 fclose(f); 2385 return exit_status; 2386} 2387 2388int main(int argc, char **argv) 2389{ 2390 int retval; 2391 const char *usage = 2392 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] " 2393 "[-R request] [-V] [" 2394#ifndef READ_ONLY 2395 "[-w] " 2396#endif 2397 "[-c] device]"; 2398 int c; 2399 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS; 2400 char *request = 0; 2401 int exit_status = 0; 2402 char *cmd_file = 0; 2403 blk64_t superblock = 0; 2404 blk64_t blocksize = 0; 2405 int catastrophic = 0; 2406 char *data_filename = 0; 2407#ifdef READ_ONLY 2408 const char *opt_string = "icR:f:b:s:Vd:D"; 2409#else 2410 const char *opt_string = "iwcR:f:b:s:Vd:D"; 2411#endif 2412 2413 if (debug_prog_name == 0) 2414#ifdef READ_ONLY 2415 debug_prog_name = "rdebugfs"; 2416#else 2417 debug_prog_name = "debugfs"; 2418#endif 2419 add_error_table(&et_ext2_error_table); 2420 fprintf (stderr, "%s %s (%s)\n", debug_prog_name, 2421 E2FSPROGS_VERSION, E2FSPROGS_DATE); 2422 2423 while ((c = getopt (argc, argv, opt_string)) != EOF) { 2424 switch (c) { 2425 case 'R': 2426 request = optarg; 2427 break; 2428 case 'f': 2429 cmd_file = optarg; 2430 break; 2431 case 'd': 2432 data_filename = optarg; 2433 break; 2434 case 'i': 2435 open_flags |= EXT2_FLAG_IMAGE_FILE; 2436 break; 2437#ifndef READ_ONLY 2438 case 'w': 2439 open_flags |= EXT2_FLAG_RW; 2440 break; 2441#endif 2442 case 'D': 2443 open_flags |= EXT2_FLAG_DIRECT_IO; 2444 break; 2445 case 'b': 2446 blocksize = parse_ulong(optarg, argv[0], 2447 "block size", 0); 2448 break; 2449 case 's': 2450 superblock = parse_ulong(optarg, argv[0], 2451 "superblock number", 0); 2452 break; 2453 case 'c': 2454 catastrophic = 1; 2455 break; 2456 case 'V': 2457 /* Print version number and exit */ 2458 fprintf(stderr, "\tUsing %s\n", 2459 error_message(EXT2_ET_BASE)); 2460 exit(0); 2461 default: 2462 com_err(argv[0], 0, usage, debug_prog_name); 2463 return 1; 2464 } 2465 } 2466 if (optind < argc) 2467 open_filesystem(argv[optind], open_flags, 2468 superblock, blocksize, catastrophic, 2469 data_filename); 2470 2471 sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL, 2472 &debug_cmds, &retval); 2473 if (retval) { 2474 ss_perror(sci_idx, retval, "creating invocation"); 2475 exit(1); 2476 } 2477 ss_get_readline(sci_idx); 2478 2479 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval); 2480 if (retval) { 2481 ss_perror(sci_idx, retval, "adding standard requests"); 2482 exit (1); 2483 } 2484 if (extra_cmds) 2485 ss_add_request_table (sci_idx, extra_cmds, 1, &retval); 2486 if (retval) { 2487 ss_perror(sci_idx, retval, "adding extra requests"); 2488 exit (1); 2489 } 2490 if (request) { 2491 retval = 0; 2492 retval = ss_execute_line(sci_idx, request); 2493 if (retval) { 2494 ss_perror(sci_idx, retval, request); 2495 exit_status++; 2496 } 2497 } else if (cmd_file) { 2498 exit_status = source_file(cmd_file, sci_idx); 2499 } else { 2500 ss_listen(sci_idx); 2501 } 2502 2503 ss_delete_invocation(sci_idx); 2504 2505 if (current_fs) 2506 close_filesystem(); 2507 2508 remove_error_table(&et_ext2_error_table); 2509 return exit_status; 2510} 2511