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 (at) prism.gatech.edu> 9 */ 10 11 #include <stdio.h> 12 #include <unistd.h> 13 #include <stdlib.h> 14 #include <ctype.h> 15 #include <string.h> 16 #include <time.h> 17 #ifdef HAVE_GETOPT_H 18 #include <getopt.h> 19 #else 20 extern int optind; 21 extern char *optarg; 22 #endif 23 #ifdef HAVE_ERRNO_H 24 #include <errno.h> 25 #endif 26 #include <fcntl.h> 27 #include <sys/types.h> 28 #include <sys/stat.h> 29 30 #include "et/com_err.h" 31 #include "ss/ss.h" 32 #include "debugfs.h" 33 #include "uuid/uuid.h" 34 #include "e2p/e2p.h" 35 36 #include <ext2fs/ext2_ext_attr.h> 37 38 #include "../version.h" 39 40 extern ss_request_table debug_cmds; 41 42 ext2_filsys current_fs = NULL; 43 ext2_ino_t root, cwd; 44 45 static void open_filesystem(char *device, int open_flags, blk_t superblock, 46 blk_t blocksize, int catastrophic, 47 char *data_filename) 48 { 49 int retval; 50 io_channel data_io = 0; 51 52 if (superblock != 0 && blocksize == 0) { 53 com_err(device, 0, "if you specify the superblock, you must also specify the block size"); 54 current_fs = NULL; 55 return; 56 } 57 58 if (data_filename) { 59 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) { 60 com_err(device, 0, 61 "The -d option is only valid when reading an e2image file"); 62 current_fs = NULL; 63 return; 64 } 65 retval = unix_io_manager->open(data_filename, 0, &data_io); 66 if (retval) { 67 com_err(data_filename, 0, "while opening data source"); 68 current_fs = NULL; 69 return; 70 } 71 } 72 73 if (catastrophic && (open_flags & EXT2_FLAG_RW)) { 74 com_err(device, 0, 75 "opening read-only because of catastrophic mode"); 76 open_flags &= ~EXT2_FLAG_RW; 77 } 78 79 retval = ext2fs_open(device, open_flags, superblock, blocksize, 80 unix_io_manager, ¤t_fs); 81 if (retval) { 82 com_err(device, retval, "while opening filesystem"); 83 current_fs = NULL; 84 return; 85 } 86 87 if (catastrophic) 88 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps"); 89 else { 90 retval = ext2fs_read_inode_bitmap(current_fs); 91 if (retval) { 92 com_err(device, retval, "while reading inode bitmap"); 93 goto errout; 94 } 95 retval = ext2fs_read_block_bitmap(current_fs); 96 if (retval) { 97 com_err(device, retval, "while reading block bitmap"); 98 goto errout; 99 } 100 } 101 102 if (data_io) { 103 retval = ext2fs_set_data_io(current_fs, data_io); 104 if (retval) { 105 com_err(device, retval, 106 "while setting data source"); 107 goto errout; 108 } 109 } 110 111 root = cwd = EXT2_ROOT_INO; 112 return; 113 114 errout: 115 retval = ext2fs_close(current_fs); 116 if (retval) 117 com_err(device, retval, "while trying to close filesystem"); 118 current_fs = NULL; 119 } 120 121 void do_open_filesys(int argc, char **argv) 122 { 123 int c, err; 124 int catastrophic = 0; 125 blk_t superblock = 0; 126 blk_t blocksize = 0; 127 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES; 128 char *data_filename = 0; 129 130 reset_getopt(); 131 while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) { 132 switch (c) { 133 case 'i': 134 open_flags |= EXT2_FLAG_IMAGE_FILE; 135 break; 136 case 'w': 137 open_flags |= EXT2_FLAG_RW; 138 break; 139 case 'f': 140 open_flags |= EXT2_FLAG_FORCE; 141 break; 142 case 'e': 143 open_flags |= EXT2_FLAG_EXCLUSIVE; 144 break; 145 case 'c': 146 catastrophic = 1; 147 break; 148 case 'd': 149 data_filename = optarg; 150 break; 151 case 'b': 152 blocksize = parse_ulong(optarg, argv[0], 153 "block size", &err); 154 if (err) 155 return; 156 break; 157 case 's': 158 superblock = parse_ulong(optarg, argv[0], 159 "superblock number", &err); 160 if (err) 161 return; 162 break; 163 default: 164 goto print_usage; 165 } 166 } 167 if (optind != argc-1) { 168 goto print_usage; 169 } 170 if (check_fs_not_open(argv[0])) 171 return; 172 open_filesystem(argv[optind], open_flags, 173 superblock, blocksize, catastrophic, 174 data_filename); 175 return; 176 177 print_usage: 178 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] " 179 "[-c] [-w] <device>\n", argv[0]); 180 } 181 182 void do_lcd(int argc, char **argv) 183 { 184 if (argc != 2) { 185 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>"); 186 return; 187 } 188 189 if (chdir(argv[1]) == -1) { 190 com_err(argv[0], errno, 191 "while trying to change native directory to %s", 192 argv[1]); 193 return; 194 } 195 } 196 197 static void close_filesystem(NOARGS) 198 { 199 int retval; 200 201 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) { 202 retval = ext2fs_write_inode_bitmap(current_fs); 203 if (retval) 204 com_err("ext2fs_write_inode_bitmap", retval, 0); 205 } 206 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) { 207 retval = ext2fs_write_block_bitmap(current_fs); 208 if (retval) 209 com_err("ext2fs_write_block_bitmap", retval, 0); 210 } 211 retval = ext2fs_close(current_fs); 212 if (retval) 213 com_err("ext2fs_close", retval, 0); 214 current_fs = NULL; 215 return; 216 } 217 218 void do_close_filesys(int argc, char **argv) 219 { 220 if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0)) 221 return; 222 close_filesystem(); 223 } 224 225 void do_init_filesys(int argc, char **argv) 226 { 227 struct ext2_super_block param; 228 errcode_t retval; 229 int err; 230 231 if (common_args_process(argc, argv, 3, 3, "initialize", 232 "<device> <blocksize>", CHECK_FS_NOTOPEN)) 233 return; 234 235 memset(¶m, 0, sizeof(struct ext2_super_block)); 236 param.s_blocks_count = parse_ulong(argv[2], argv[0], 237 "blocks count", &err); 238 if (err) 239 return; 240 retval = ext2fs_initialize(argv[1], 0, ¶m, 241 unix_io_manager, ¤t_fs); 242 if (retval) { 243 com_err(argv[1], retval, "while initializing filesystem"); 244 current_fs = NULL; 245 return; 246 } 247 root = cwd = EXT2_ROOT_INO; 248 return; 249 } 250 251 static void print_features(struct ext2_super_block * s, FILE *f) 252 { 253 int i, j, printed=0; 254 __u32 *mask = &s->s_feature_compat, m; 255 256 fputs("Filesystem features:", f); 257 for (i=0; i <3; i++,mask++) { 258 for (j=0,m=1; j < 32; j++, m<<=1) { 259 if (*mask & m) { 260 fprintf(f, " %s", e2p_feature2string(i, m)); 261 printed++; 262 } 263 } 264 } 265 if (printed == 0) 266 fputs("(none)", f); 267 fputs("\n", f); 268 } 269 270 static void print_bg_opts(struct ext2_group_desc *gdp, int mask, 271 const char *str, int *first, FILE *f) 272 { 273 if (gdp->bg_flags & mask) { 274 if (*first) { 275 fputs(" [", f); 276 *first = 0; 277 } else 278 fputs(", ", f); 279 fputs(str, f); 280 } 281 } 282 283 void do_show_super_stats(int argc, char *argv[]) 284 { 285 dgrp_t i; 286 FILE *out; 287 struct ext2_group_desc *gdp; 288 int c, header_only = 0; 289 int numdirs = 0, first; 290 291 reset_getopt(); 292 while ((c = getopt (argc, argv, "h")) != EOF) { 293 switch (c) { 294 case 'h': 295 header_only++; 296 break; 297 default: 298 goto print_usage; 299 } 300 } 301 if (optind != argc) { 302 goto print_usage; 303 } 304 if (check_fs_open(argv[0])) 305 return; 306 out = open_pager(); 307 308 list_super2(current_fs->super, out); 309 for (i=0; i < current_fs->group_desc_count; i++) 310 numdirs += current_fs->group_desc[i].bg_used_dirs_count; 311 fprintf(out, "Directories: %d\n", numdirs); 312 313 if (header_only) { 314 close_pager(out); 315 return; 316 } 317 318 gdp = ¤t_fs->group_desc[0]; 319 for (i = 0; i < current_fs->group_desc_count; i++, gdp++) { 320 fprintf(out, " Group %2d: block bitmap at %u, " 321 "inode bitmap at %u, " 322 "inode table at %u\n" 323 " %d free %s, " 324 "%d free %s, " 325 "%d used %s\n", 326 i, gdp->bg_block_bitmap, 327 gdp->bg_inode_bitmap, gdp->bg_inode_table, 328 gdp->bg_free_blocks_count, 329 gdp->bg_free_blocks_count != 1 ? "blocks" : "block", 330 gdp->bg_free_inodes_count, 331 gdp->bg_free_inodes_count != 1 ? "inodes" : "inode", 332 gdp->bg_used_dirs_count, 333 gdp->bg_used_dirs_count != 1 ? "directories" 334 : "directory"); 335 first = 1; 336 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init", 337 &first, out); 338 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init", 339 &first, out); 340 if (!first) 341 fputs("]\n", out); 342 } 343 close_pager(out); 344 return; 345 print_usage: 346 fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]); 347 } 348 349 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)), 350 char **argv EXT2FS_ATTR((unused))) 351 { 352 if (check_fs_open(argv[0])) 353 return; 354 if (check_fs_read_write(argv[0])) 355 return; 356 357 if (argv[1] && !strcmp(argv[1], "-clean")) 358 current_fs->super->s_state |= EXT2_VALID_FS; 359 else 360 current_fs->super->s_state &= ~EXT2_VALID_FS; 361 ext2fs_mark_super_dirty(current_fs); 362 } 363 364 struct list_blocks_struct { 365 FILE *f; 366 e2_blkcnt_t total; 367 blk_t first_block, last_block; 368 e2_blkcnt_t first_bcnt, last_bcnt; 369 e2_blkcnt_t first; 370 }; 371 372 static void finish_range(struct list_blocks_struct *lb) 373 { 374 if (lb->first_block == 0) 375 return; 376 if (lb->first) 377 lb->first = 0; 378 else 379 fprintf(lb->f, ", "); 380 if (lb->first_block == lb->last_block) 381 fprintf(lb->f, "(%lld):%u", 382 (long long)lb->first_bcnt, lb->first_block); 383 else 384 fprintf(lb->f, "(%lld-%lld):%u-%u", 385 (long long)lb->first_bcnt, (long long)lb->last_bcnt, 386 lb->first_block, lb->last_block); 387 lb->first_block = 0; 388 } 389 390 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)), 391 blk_t *blocknr, e2_blkcnt_t blockcnt, 392 blk_t ref_block EXT2FS_ATTR((unused)), 393 int ref_offset EXT2FS_ATTR((unused)), 394 void *private) 395 { 396 struct list_blocks_struct *lb = (struct list_blocks_struct *) private; 397 398 lb->total++; 399 if (blockcnt >= 0) { 400 /* 401 * See if we can add on to the existing range (if it exists) 402 */ 403 if (lb->first_block && 404 (lb->last_block+1 == *blocknr) && 405 (lb->last_bcnt+1 == blockcnt)) { 406 lb->last_block = *blocknr; 407 lb->last_bcnt = blockcnt; 408 return 0; 409 } 410 /* 411 * Start a new range. 412 */ 413 finish_range(lb); 414 lb->first_block = lb->last_block = *blocknr; 415 lb->first_bcnt = lb->last_bcnt = blockcnt; 416 return 0; 417 } 418 /* 419 * Not a normal block. Always force a new range. 420 */ 421 finish_range(lb); 422 if (lb->first) 423 lb->first = 0; 424 else 425 fprintf(lb->f, ", "); 426 if (blockcnt == -1) 427 fprintf(lb->f, "(IND):%u", *blocknr); 428 else if (blockcnt == -2) 429 fprintf(lb->f, "(DIND):%u", *blocknr); 430 else if (blockcnt == -3) 431 fprintf(lb->f, "(TIND):%u", *blocknr); 432 return 0; 433 } 434 435 static void dump_xattr_string(FILE *out, const char *str, int len) 436 { 437 int printable = 0; 438 int i; 439 440 /* check: is string "printable enough?" */ 441 for (i = 0; i < len; i++) 442 if (isprint(str[i])) 443 printable++; 444 445 if (printable <= len*7/8) 446 printable = 0; 447 448 for (i = 0; i < len; i++) 449 if (printable) 450 fprintf(out, isprint(str[i]) ? "%c" : "\\%03o", 451 (unsigned char)str[i]); 452 else 453 fprintf(out, "%02x ", (unsigned char)str[i]); 454 } 455 456 static void internal_dump_inode_extra(FILE *out, 457 const char *prefix EXT2FS_ATTR((unused)), 458 ext2_ino_t inode_num EXT2FS_ATTR((unused)), 459 struct ext2_inode_large *inode) 460 { 461 struct ext2_ext_attr_entry *entry; 462 __u32 *magic; 463 char *start, *end; 464 unsigned int storage_size; 465 466 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize); 467 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) - 468 EXT2_GOOD_OLD_INODE_SIZE) { 469 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n", 470 inode->i_extra_isize); 471 return; 472 } 473 storage_size = EXT2_INODE_SIZE(current_fs->super) - 474 EXT2_GOOD_OLD_INODE_SIZE - 475 inode->i_extra_isize; 476 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE + 477 inode->i_extra_isize); 478 if (*magic == EXT2_EXT_ATTR_MAGIC) { 479 fprintf(out, "Extended attributes stored in inode body: \n"); 480 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super); 481 start = (char *) magic + sizeof(__u32); 482 entry = (struct ext2_ext_attr_entry *) start; 483 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) { 484 struct ext2_ext_attr_entry *next = 485 EXT2_EXT_ATTR_NEXT(entry); 486 if (entry->e_value_size > storage_size || 487 (char *) next >= end) { 488 fprintf(out, "invalid EA entry in inode\n"); 489 return; 490 } 491 fprintf(out, " "); 492 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry), 493 entry->e_name_len); 494 fprintf(out, " = \""); 495 dump_xattr_string(out, start + entry->e_value_offs, 496 entry->e_value_size); 497 fprintf(out, "\" (%u)\n", entry->e_value_size); 498 entry = next; 499 } 500 } 501 } 502 503 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode) 504 { 505 struct list_blocks_struct lb; 506 507 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix); 508 lb.total = 0; 509 lb.first_block = 0; 510 lb.f = f; 511 lb.first = 1; 512 ext2fs_block_iterate2(current_fs, inode, 0, NULL, 513 list_blocks_proc, (void *)&lb); 514 finish_range(&lb); 515 if (lb.total) 516 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total); 517 fprintf(f,"\n"); 518 } 519 520 521 void internal_dump_inode(FILE *out, const char *prefix, 522 ext2_ino_t inode_num, struct ext2_inode *inode, 523 int do_dump_blocks) 524 { 525 const char *i_type; 526 char frag, fsize; 527 int os = current_fs->super->s_creator_os; 528 529 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory"; 530 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular"; 531 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink"; 532 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special"; 533 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special"; 534 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO"; 535 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket"; 536 else i_type = "bad type"; 537 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type); 538 fprintf(out, "%sMode: %04o Flags: 0x%x Generation: %u\n", 539 prefix, 540 inode->i_mode & 0777, inode->i_flags, inode->i_generation); 541 fprintf(out, "%sUser: %5d Group: %5d Size: ", 542 prefix, inode_uid(*inode), inode_gid(*inode)); 543 if (LINUX_S_ISREG(inode->i_mode)) { 544 unsigned long long i_size = (inode->i_size | 545 ((unsigned long long)inode->i_size_high << 32)); 546 547 fprintf(out, "%llu\n", i_size); 548 } else 549 fprintf(out, "%d\n", inode->i_size); 550 if (os == EXT2_OS_HURD) 551 fprintf(out, 552 "%sFile ACL: %d Directory ACL: %d Translator: %d\n", 553 prefix, 554 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0, 555 inode->osd1.hurd1.h_i_translator); 556 else 557 fprintf(out, "%sFile ACL: %d Directory ACL: %d\n", 558 prefix, 559 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0); 560 if (os == EXT2_OS_LINUX) 561 fprintf(out, "%sLinks: %d Blockcount: %llu\n", 562 prefix, inode->i_links_count, 563 (((unsigned long long) 564 inode->osd2.linux2.l_i_blocks_hi << 32)) + 565 inode->i_blocks); 566 else 567 fprintf(out, "%sLinks: %d Blockcount: %u\n", 568 prefix, inode->i_links_count, inode->i_blocks); 569 switch (os) { 570 case EXT2_OS_HURD: 571 frag = inode->osd2.hurd2.h_i_frag; 572 fsize = inode->osd2.hurd2.h_i_fsize; 573 break; 574 case EXT2_OS_MASIX: 575 frag = inode->osd2.masix2.m_i_frag; 576 fsize = inode->osd2.masix2.m_i_fsize; 577 break; 578 default: 579 frag = fsize = 0; 580 } 581 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n", 582 prefix, inode->i_faddr, frag, fsize); 583 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime, 584 time_to_string(inode->i_ctime)); 585 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime, 586 time_to_string(inode->i_atime)); 587 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime, 588 time_to_string(inode->i_mtime)); 589 if (inode->i_dtime) 590 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime, 591 time_to_string(inode->i_dtime)); 592 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE) 593 internal_dump_inode_extra(out, prefix, inode_num, 594 (struct ext2_inode_large *) inode); 595 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0) 596 fprintf(out, "%sFast_link_dest: %.*s\n", prefix, 597 (int) inode->i_size, (char *)inode->i_block); 598 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) { 599 int major, minor; 600 const char *devnote; 601 602 if (inode->i_block[0]) { 603 major = (inode->i_block[0] >> 8) & 255; 604 minor = inode->i_block[0] & 255; 605 devnote = ""; 606 } else { 607 major = (inode->i_block[1] & 0xfff00) >> 8; 608 minor = ((inode->i_block[1] & 0xff) | 609 ((inode->i_block[1] >> 12) & 0xfff00)); 610 devnote = "(New-style) "; 611 } 612 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n", 613 devnote, major, minor, major, minor); 614 } 615 else if (do_dump_blocks) 616 dump_blocks(out, prefix, inode_num); 617 } 618 619 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode) 620 { 621 FILE *out; 622 623 out = open_pager(); 624 internal_dump_inode(out, "", inode_num, inode, 1); 625 close_pager(out); 626 } 627 628 void do_stat(int argc, char *argv[]) 629 { 630 ext2_ino_t inode; 631 struct ext2_inode * inode_buf; 632 633 if (check_fs_open(argv[0])) 634 return; 635 636 inode_buf = (struct ext2_inode *) 637 malloc(EXT2_INODE_SIZE(current_fs->super)); 638 if (!inode_buf) { 639 fprintf(stderr, "do_stat: can't allocate buffer\n"); 640 return; 641 } 642 643 if (common_inode_args_process(argc, argv, &inode, 0)) { 644 free(inode_buf); 645 return; 646 } 647 648 if (debugfs_read_inode_full(inode, inode_buf, argv[0], 649 EXT2_INODE_SIZE(current_fs->super))) { 650 free(inode_buf); 651 return; 652 } 653 654 dump_inode(inode, inode_buf); 655 free(inode_buf); 656 return; 657 } 658 659 void do_chroot(int argc, char *argv[]) 660 { 661 ext2_ino_t inode; 662 int retval; 663 664 if (common_inode_args_process(argc, argv, &inode, 0)) 665 return; 666 667 retval = ext2fs_check_directory(current_fs, inode); 668 if (retval) { 669 com_err(argv[1], retval, 0); 670 return; 671 } 672 root = inode; 673 } 674 675 void do_clri(int argc, char *argv[]) 676 { 677 ext2_ino_t inode; 678 struct ext2_inode inode_buf; 679 680 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW)) 681 return; 682 683 if (debugfs_read_inode(inode, &inode_buf, argv[0])) 684 return; 685 memset(&inode_buf, 0, sizeof(inode_buf)); 686 if (debugfs_write_inode(inode, &inode_buf, argv[0])) 687 return; 688 } 689 690 void do_freei(int argc, char *argv[]) 691 { 692 ext2_ino_t inode; 693 694 if (common_inode_args_process(argc, argv, &inode, 695 CHECK_FS_RW | CHECK_FS_BITMAPS)) 696 return; 697 698 if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode)) 699 com_err(argv[0], 0, "Warning: inode already clear"); 700 ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode); 701 ext2fs_mark_ib_dirty(current_fs); 702 } 703 704 void do_seti(int argc, char *argv[]) 705 { 706 ext2_ino_t inode; 707 708 if (common_inode_args_process(argc, argv, &inode, 709 CHECK_FS_RW | CHECK_FS_BITMAPS)) 710 return; 711 712 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode)) 713 com_err(argv[0], 0, "Warning: inode already set"); 714 ext2fs_mark_inode_bitmap(current_fs->inode_map,inode); 715 ext2fs_mark_ib_dirty(current_fs); 716 } 717 718 void do_testi(int argc, char *argv[]) 719 { 720 ext2_ino_t inode; 721 722 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS)) 723 return; 724 725 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode)) 726 printf("Inode %u is marked in use\n", inode); 727 else 728 printf("Inode %u is not in use\n", inode); 729 } 730 731 void do_freeb(int argc, char *argv[]) 732 { 733 blk_t block; 734 blk_t count = 1; 735 736 if (common_block_args_process(argc, argv, &block, &count)) 737 return; 738 if (check_fs_read_write(argv[0])) 739 return; 740 while (count-- > 0) { 741 if (!ext2fs_test_block_bitmap(current_fs->block_map,block)) 742 com_err(argv[0], 0, "Warning: block %u already clear", 743 block); 744 ext2fs_unmark_block_bitmap(current_fs->block_map,block); 745 block++; 746 } 747 ext2fs_mark_bb_dirty(current_fs); 748 } 749 750 void do_setb(int argc, char *argv[]) 751 { 752 blk_t block; 753 blk_t count = 1; 754 755 if (common_block_args_process(argc, argv, &block, &count)) 756 return; 757 if (check_fs_read_write(argv[0])) 758 return; 759 while (count-- > 0) { 760 if (ext2fs_test_block_bitmap(current_fs->block_map,block)) 761 com_err(argv[0], 0, "Warning: block %u already set", 762 block); 763 ext2fs_mark_block_bitmap(current_fs->block_map,block); 764 block++; 765 } 766 ext2fs_mark_bb_dirty(current_fs); 767 } 768 769 void do_testb(int argc, char *argv[]) 770 { 771 blk_t block; 772 blk_t count = 1; 773 774 if (common_block_args_process(argc, argv, &block, &count)) 775 return; 776 while (count-- > 0) { 777 if (ext2fs_test_block_bitmap(current_fs->block_map,block)) 778 printf("Block %u marked in use\n", block); 779 else 780 printf("Block %u not in use\n", block); 781 block++; 782 } 783 } 784 785 static void modify_u8(char *com, const char *prompt, 786 const char *format, __u8 *val) 787 { 788 char buf[200]; 789 unsigned long v; 790 char *tmp; 791 792 sprintf(buf, format, *val); 793 printf("%30s [%s] ", prompt, buf); 794 fgets(buf, sizeof(buf), stdin); 795 if (buf[strlen (buf) - 1] == '\n') 796 buf[strlen (buf) - 1] = '\0'; 797 if (!buf[0]) 798 return; 799 v = strtoul(buf, &tmp, 0); 800 if (*tmp) 801 com_err(com, 0, "Bad value - %s", buf); 802 else 803 *val = v; 804 } 805 806 static void modify_u16(char *com, const char *prompt, 807 const char *format, __u16 *val) 808 { 809 char buf[200]; 810 unsigned long v; 811 char *tmp; 812 813 sprintf(buf, format, *val); 814 printf("%30s [%s] ", prompt, buf); 815 fgets(buf, sizeof(buf), stdin); 816 if (buf[strlen (buf) - 1] == '\n') 817 buf[strlen (buf) - 1] = '\0'; 818 if (!buf[0]) 819 return; 820 v = strtoul(buf, &tmp, 0); 821 if (*tmp) 822 com_err(com, 0, "Bad value - %s", buf); 823 else 824 *val = v; 825 } 826 827 static void modify_u32(char *com, const char *prompt, 828 const char *format, __u32 *val) 829 { 830 char buf[200]; 831 unsigned long v; 832 char *tmp; 833 834 sprintf(buf, format, *val); 835 printf("%30s [%s] ", prompt, buf); 836 fgets(buf, sizeof(buf), stdin); 837 if (buf[strlen (buf) - 1] == '\n') 838 buf[strlen (buf) - 1] = '\0'; 839 if (!buf[0]) 840 return; 841 v = strtoul(buf, &tmp, 0); 842 if (*tmp) 843 com_err(com, 0, "Bad value - %s", buf); 844 else 845 *val = v; 846 } 847 848 849 void do_modify_inode(int argc, char *argv[]) 850 { 851 struct ext2_inode inode; 852 ext2_ino_t inode_num; 853 int i; 854 unsigned char *frag, *fsize; 855 char buf[80]; 856 int os; 857 const char *hex_format = "0x%x"; 858 const char *octal_format = "0%o"; 859 const char *decimal_format = "%d"; 860 const char *unsignedlong_format = "%lu"; 861 862 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW)) 863 return; 864 865 os = current_fs->super->s_creator_os; 866 867 if (debugfs_read_inode(inode_num, &inode, argv[1])) 868 return; 869 870 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode); 871 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid); 872 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid); 873 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size); 874 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime); 875 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime); 876 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime); 877 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime); 878 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count); 879 if (os == EXT2_OS_LINUX) 880 modify_u16(argv[0], "Block count high", unsignedlong_format, 881 &inode.osd2.linux2.l_i_blocks_hi); 882 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks); 883 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags); 884 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation); 885 #if 0 886 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1); 887 #endif 888 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl); 889 if (LINUX_S_ISDIR(inode.i_mode)) 890 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl); 891 else 892 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high); 893 894 if (os == EXT2_OS_HURD) 895 modify_u32(argv[0], "Translator Block", 896 decimal_format, &inode.osd1.hurd1.h_i_translator); 897 898 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr); 899 switch (os) { 900 case EXT2_OS_HURD: 901 frag = &inode.osd2.hurd2.h_i_frag; 902 fsize = &inode.osd2.hurd2.h_i_fsize; 903 break; 904 case EXT2_OS_MASIX: 905 frag = &inode.osd2.masix2.m_i_frag; 906 fsize = &inode.osd2.masix2.m_i_fsize; 907 break; 908 default: 909 frag = fsize = 0; 910 } 911 if (frag) 912 modify_u8(argv[0], "Fragment number", decimal_format, frag); 913 if (fsize) 914 modify_u8(argv[0], "Fragment size", decimal_format, fsize); 915 916 for (i=0; i < EXT2_NDIR_BLOCKS; i++) { 917 sprintf(buf, "Direct Block #%d", i); 918 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]); 919 } 920 modify_u32(argv[0], "Indirect Block", decimal_format, 921 &inode.i_block[EXT2_IND_BLOCK]); 922 modify_u32(argv[0], "Double Indirect Block", decimal_format, 923 &inode.i_block[EXT2_DIND_BLOCK]); 924 modify_u32(argv[0], "Triple Indirect Block", decimal_format, 925 &inode.i_block[EXT2_TIND_BLOCK]); 926 if (debugfs_write_inode(inode_num, &inode, argv[1])) 927 return; 928 } 929 930 void do_change_working_dir(int argc, char *argv[]) 931 { 932 ext2_ino_t inode; 933 int retval; 934 935 if (common_inode_args_process(argc, argv, &inode, 0)) 936 return; 937 938 retval = ext2fs_check_directory(current_fs, inode); 939 if (retval) { 940 com_err(argv[1], retval, 0); 941 return; 942 } 943 cwd = inode; 944 return; 945 } 946 947 void do_print_working_directory(int argc, char *argv[]) 948 { 949 int retval; 950 char *pathname = NULL; 951 952 if (common_args_process(argc, argv, 1, 1, 953 "print_working_directory", "", 0)) 954 return; 955 956 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname); 957 if (retval) { 958 com_err(argv[0], retval, 959 "while trying to get pathname of cwd"); 960 } 961 printf("[pwd] INODE: %6u PATH: %s\n", 962 cwd, pathname ? pathname : "NULL"); 963 if (pathname) { 964 free(pathname); 965 pathname = NULL; 966 } 967 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname); 968 if (retval) { 969 com_err(argv[0], retval, 970 "while trying to get pathname of root"); 971 } 972 printf("[root] INODE: %6u PATH: %s\n", 973 root, pathname ? pathname : "NULL"); 974 if (pathname) { 975 free(pathname); 976 pathname = NULL; 977 } 978 return; 979 } 980 981 /* 982 * Given a mode, return the ext2 file type 983 */ 984 static int ext2_file_type(unsigned int mode) 985 { 986 if (LINUX_S_ISREG(mode)) 987 return EXT2_FT_REG_FILE; 988 989 if (LINUX_S_ISDIR(mode)) 990 return EXT2_FT_DIR; 991 992 if (LINUX_S_ISCHR(mode)) 993 return EXT2_FT_CHRDEV; 994 995 if (LINUX_S_ISBLK(mode)) 996 return EXT2_FT_BLKDEV; 997 998 if (LINUX_S_ISLNK(mode)) 999 return EXT2_FT_SYMLINK; 1000 1001 if (LINUX_S_ISFIFO(mode)) 1002 return EXT2_FT_FIFO; 1003 1004 if (LINUX_S_ISSOCK(mode)) 1005 return EXT2_FT_SOCK; 1006 1007 return 0; 1008 } 1009 1010 static void make_link(char *sourcename, char *destname) 1011 { 1012 ext2_ino_t ino; 1013 struct ext2_inode inode; 1014 int retval; 1015 ext2_ino_t dir; 1016 char *dest, *cp, *basename; 1017 1018 /* 1019 * Get the source inode 1020 */ 1021 ino = string_to_inode(sourcename); 1022 if (!ino) 1023 return; 1024 basename = strrchr(sourcename, '/'); 1025 if (basename) 1026 basename++; 1027 else 1028 basename = sourcename; 1029 /* 1030 * Figure out the destination. First see if it exists and is 1031 * a directory. 1032 */ 1033 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir))) 1034 dest = basename; 1035 else { 1036 /* 1037 * OK, it doesn't exist. See if it is 1038 * '<dir>/basename' or 'basename' 1039 */ 1040 cp = strrchr(destname, '/'); 1041 if (cp) { 1042 *cp = 0; 1043 dir = string_to_inode(destname); 1044 if (!dir) 1045 return; 1046 dest = cp+1; 1047 } else { 1048 dir = cwd; 1049 dest = destname; 1050 } 1051 } 1052 1053 if (debugfs_read_inode(ino, &inode, sourcename)) 1054 return; 1055 1056 retval = ext2fs_link(current_fs, dir, dest, ino, 1057 ext2_file_type(inode.i_mode)); 1058 if (retval) 1059 com_err("make_link", retval, 0); 1060 return; 1061 } 1062 1063 1064 void do_link(int argc, char *argv[]) 1065 { 1066 if (common_args_process(argc, argv, 3, 3, "link", 1067 "<source file> <dest_name>", CHECK_FS_RW)) 1068 return; 1069 1070 make_link(argv[1], argv[2]); 1071 } 1072 1073 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr, 1074 int blockcnt EXT2FS_ATTR((unused)), 1075 void *private EXT2FS_ATTR((unused))) 1076 { 1077 blk_t block; 1078 1079 block = *blocknr; 1080 ext2fs_block_alloc_stats(fs, block, +1); 1081 return 0; 1082 } 1083 1084 void do_undel(int argc, char *argv[]) 1085 { 1086 ext2_ino_t ino; 1087 struct ext2_inode inode; 1088 1089 if (common_args_process(argc, argv, 2, 3, "undelete", 1090 "<inode_num> [dest_name]", 1091 CHECK_FS_RW | CHECK_FS_BITMAPS)) 1092 return; 1093 1094 ino = string_to_inode(argv[1]); 1095 if (!ino) 1096 return; 1097 1098 if (debugfs_read_inode(ino, &inode, argv[1])) 1099 return; 1100 1101 if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) { 1102 com_err(argv[1], 0, "Inode is not marked as deleted"); 1103 return; 1104 } 1105 1106 /* 1107 * XXX this function doesn't handle changing the links count on the 1108 * parent directory when undeleting a directory. 1109 */ 1110 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1; 1111 inode.i_dtime = 0; 1112 1113 if (debugfs_write_inode(ino, &inode, argv[0])) 1114 return; 1115 1116 ext2fs_block_iterate(current_fs, ino, 0, NULL, 1117 mark_blocks_proc, NULL); 1118 1119 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0); 1120 1121 if (argc > 2) 1122 make_link(argv[1], argv[2]); 1123 } 1124 1125 static void unlink_file_by_name(char *filename) 1126 { 1127 int retval; 1128 ext2_ino_t dir; 1129 char *basename; 1130 1131 basename = strrchr(filename, '/'); 1132 if (basename) { 1133 *basename++ = '\0'; 1134 dir = string_to_inode(filename); 1135 if (!dir) 1136 return; 1137 } else { 1138 dir = cwd; 1139 basename = filename; 1140 } 1141 retval = ext2fs_unlink(current_fs, dir, basename, 0, 0); 1142 if (retval) 1143 com_err("unlink_file_by_name", retval, 0); 1144 return; 1145 } 1146 1147 void do_unlink(int argc, char *argv[]) 1148 { 1149 if (common_args_process(argc, argv, 2, 2, "link", 1150 "<pathname>", CHECK_FS_RW)) 1151 return; 1152 1153 unlink_file_by_name(argv[1]); 1154 } 1155 1156 void do_find_free_block(int argc, char *argv[]) 1157 { 1158 blk_t free_blk, goal, first_free = 0; 1159 int count; 1160 errcode_t retval; 1161 char *tmp; 1162 1163 if ((argc > 3) || (argc==2 && *argv[1] == '?')) { 1164 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]"); 1165 return; 1166 } 1167 if (check_fs_open(argv[0])) 1168 return; 1169 1170 if (argc > 1) { 1171 count = strtol(argv[1],&tmp,0); 1172 if (*tmp) { 1173 com_err(argv[0], 0, "Bad count - %s", argv[1]); 1174 return; 1175 } 1176 } else 1177 count = 1; 1178 1179 if (argc > 2) { 1180 goal = strtol(argv[2], &tmp, 0); 1181 if (*tmp) { 1182 com_err(argv[0], 0, "Bad goal - %s", argv[1]); 1183 return; 1184 } 1185 } 1186 else 1187 goal = current_fs->super->s_first_data_block; 1188 1189 printf("Free blocks found: "); 1190 free_blk = goal - 1; 1191 while (count-- > 0) { 1192 retval = ext2fs_new_block(current_fs, free_blk + 1, 0, 1193 &free_blk); 1194 if (first_free) { 1195 if (first_free == free_blk) 1196 break; 1197 } else 1198 first_free = free_blk; 1199 if (retval) { 1200 com_err("ext2fs_new_block", retval, 0); 1201 return; 1202 } else 1203 printf("%u ", free_blk); 1204 } 1205 printf("\n"); 1206 } 1207 1208 void do_find_free_inode(int argc, char *argv[]) 1209 { 1210 ext2_ino_t free_inode, dir; 1211 int mode; 1212 int retval; 1213 char *tmp; 1214 1215 if (argc > 3 || (argc>1 && *argv[1] == '?')) { 1216 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]"); 1217 return; 1218 } 1219 if (check_fs_open(argv[0])) 1220 return; 1221 1222 if (argc > 1) { 1223 dir = strtol(argv[1], &tmp, 0); 1224 if (*tmp) { 1225 com_err(argv[0], 0, "Bad dir - %s", argv[1]); 1226 return; 1227 } 1228 } 1229 else 1230 dir = root; 1231 if (argc > 2) { 1232 mode = strtol(argv[2], &tmp, 0); 1233 if (*tmp) { 1234 com_err(argv[0], 0, "Bad mode - %s", argv[2]); 1235 return; 1236 } 1237 } else 1238 mode = 010755; 1239 1240 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode); 1241 if (retval) 1242 com_err("ext2fs_new_inode", retval, 0); 1243 else 1244 printf("Free inode found: %u\n", free_inode); 1245 } 1246 1247 static errcode_t copy_file(int fd, ext2_ino_t newfile) 1248 { 1249 ext2_file_t e2_file; 1250 errcode_t retval; 1251 int got; 1252 unsigned int written; 1253 char buf[8192]; 1254 char *ptr; 1255 1256 retval = ext2fs_file_open(current_fs, newfile, 1257 EXT2_FILE_WRITE, &e2_file); 1258 if (retval) 1259 return retval; 1260 1261 while (1) { 1262 got = read(fd, buf, sizeof(buf)); 1263 if (got == 0) 1264 break; 1265 if (got < 0) { 1266 retval = errno; 1267 goto fail; 1268 } 1269 ptr = buf; 1270 while (got > 0) { 1271 retval = ext2fs_file_write(e2_file, ptr, 1272 got, &written); 1273 if (retval) 1274 goto fail; 1275 1276 got -= written; 1277 ptr += written; 1278 } 1279 } 1280 retval = ext2fs_file_close(e2_file); 1281 return retval; 1282 1283 fail: 1284 (void) ext2fs_file_close(e2_file); 1285 return retval; 1286 } 1287 1288 1289 void do_write(int argc, char *argv[]) 1290 { 1291 int fd; 1292 struct stat statbuf; 1293 ext2_ino_t newfile; 1294 errcode_t retval; 1295 struct ext2_inode inode; 1296 1297 if (common_args_process(argc, argv, 3, 3, "write", 1298 "<native file> <new file>", CHECK_FS_RW)) 1299 return; 1300 1301 fd = open(argv[1], O_RDONLY); 1302 if (fd < 0) { 1303 com_err(argv[1], errno, 0); 1304 return; 1305 } 1306 if (fstat(fd, &statbuf) < 0) { 1307 com_err(argv[1], errno, 0); 1308 close(fd); 1309 return; 1310 } 1311 1312 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile); 1313 if (retval == 0) { 1314 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]); 1315 close(fd); 1316 return; 1317 } 1318 1319 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile); 1320 if (retval) { 1321 com_err(argv[0], retval, 0); 1322 close(fd); 1323 return; 1324 } 1325 printf("Allocated inode: %u\n", newfile); 1326 retval = ext2fs_link(current_fs, cwd, argv[2], newfile, 1327 EXT2_FT_REG_FILE); 1328 if (retval == EXT2_ET_DIR_NO_SPACE) { 1329 retval = ext2fs_expand_dir(current_fs, cwd); 1330 if (retval) { 1331 com_err(argv[0], retval, "while expanding directory"); 1332 return; 1333 } 1334 retval = ext2fs_link(current_fs, cwd, argv[2], newfile, 1335 EXT2_FT_REG_FILE); 1336 } 1337 if (retval) { 1338 com_err(argv[2], retval, 0); 1339 close(fd); 1340 return; 1341 } 1342 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile)) 1343 com_err(argv[0], 0, "Warning: inode already set"); 1344 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0); 1345 memset(&inode, 0, sizeof(inode)); 1346 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG; 1347 inode.i_atime = inode.i_ctime = inode.i_mtime = 1348 current_fs->now ? current_fs->now : time(0); 1349 inode.i_links_count = 1; 1350 inode.i_size = statbuf.st_size; 1351 if (debugfs_write_new_inode(newfile, &inode, argv[0])) { 1352 close(fd); 1353 return; 1354 } 1355 if (LINUX_S_ISREG(inode.i_mode)) { 1356 retval = copy_file(fd, newfile); 1357 if (retval) 1358 com_err("copy_file", retval, 0); 1359 } 1360 close(fd); 1361 } 1362 1363 void do_mknod(int argc, char *argv[]) 1364 { 1365 unsigned long mode, major, minor; 1366 ext2_ino_t newfile; 1367 errcode_t retval; 1368 struct ext2_inode inode; 1369 int filetype, nr; 1370 1371 if (check_fs_open(argv[0])) 1372 return; 1373 if (argc < 3 || argv[2][1]) { 1374 usage: 1375 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]"); 1376 return; 1377 } 1378 mode = minor = major = 0; 1379 switch (argv[2][0]) { 1380 case 'p': 1381 mode = LINUX_S_IFIFO; 1382 filetype = EXT2_FT_FIFO; 1383 nr = 3; 1384 break; 1385 case 'c': 1386 mode = LINUX_S_IFCHR; 1387 filetype = EXT2_FT_CHRDEV; 1388 nr = 5; 1389 break; 1390 case 'b': 1391 mode = LINUX_S_IFBLK; 1392 filetype = EXT2_FT_BLKDEV; 1393 nr = 5; 1394 break; 1395 default: 1396 filetype = 0; 1397 nr = 0; 1398 } 1399 if (nr == 5) { 1400 major = strtoul(argv[3], argv+3, 0); 1401 minor = strtoul(argv[4], argv+4, 0); 1402 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0]) 1403 nr = 0; 1404 } 1405 if (argc != nr) 1406 goto usage; 1407 if (check_fs_read_write(argv[0])) 1408 return; 1409 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile); 1410 if (retval) { 1411 com_err(argv[0], retval, 0); 1412 return; 1413 } 1414 printf("Allocated inode: %u\n", newfile); 1415 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype); 1416 if (retval == EXT2_ET_DIR_NO_SPACE) { 1417 retval = ext2fs_expand_dir(current_fs, cwd); 1418 if (retval) { 1419 com_err(argv[0], retval, "while expanding directory"); 1420 return; 1421 } 1422 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, 1423 filetype); 1424 } 1425 if (retval) { 1426 com_err(argv[1], retval, 0); 1427 return; 1428 } 1429 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile)) 1430 com_err(argv[0], 0, "Warning: inode already set"); 1431 ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile); 1432 ext2fs_mark_ib_dirty(current_fs); 1433 memset(&inode, 0, sizeof(inode)); 1434 inode.i_mode = mode; 1435 inode.i_atime = inode.i_ctime = inode.i_mtime = 1436 current_fs->now ? current_fs->now : time(0); 1437 if ((major < 256) && (minor < 256)) { 1438 inode.i_block[0] = major*256+minor; 1439 inode.i_block[1] = 0; 1440 } else { 1441 inode.i_block[0] = 0; 1442 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12); 1443 } 1444 inode.i_links_count = 1; 1445 if (debugfs_write_new_inode(newfile, &inode, argv[0])) 1446 return; 1447 } 1448 1449 void do_mkdir(int argc, char *argv[]) 1450 { 1451 char *cp; 1452 ext2_ino_t parent; 1453 char *name; 1454 errcode_t retval; 1455 1456 if (common_args_process(argc, argv, 2, 2, "mkdir", 1457 "<filename>", CHECK_FS_RW)) 1458 return; 1459 1460 cp = strrchr(argv[1], '/'); 1461 if (cp) { 1462 *cp = 0; 1463 parent = string_to_inode(argv[1]); 1464 if (!parent) { 1465 com_err(argv[1], ENOENT, 0); 1466 return; 1467 } 1468 name = cp+1; 1469 } else { 1470 parent = cwd; 1471 name = argv[1]; 1472 } 1473 1474 try_again: 1475 retval = ext2fs_mkdir(current_fs, parent, 0, name); 1476 if (retval == EXT2_ET_DIR_NO_SPACE) { 1477 retval = ext2fs_expand_dir(current_fs, parent); 1478 if (retval) { 1479 com_err("argv[0]", retval, "while expanding directory"); 1480 return; 1481 } 1482 goto try_again; 1483 } 1484 if (retval) { 1485 com_err("ext2fs_mkdir", retval, 0); 1486 return; 1487 } 1488 1489 } 1490 1491 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr, 1492 int blockcnt EXT2FS_ATTR((unused)), 1493 void *private EXT2FS_ATTR((unused))) 1494 { 1495 blk_t block; 1496 1497 block = *blocknr; 1498 ext2fs_block_alloc_stats(fs, block, -1); 1499 return 0; 1500 } 1501 1502 static void kill_file_by_inode(ext2_ino_t inode) 1503 { 1504 struct ext2_inode inode_buf; 1505 1506 if (debugfs_read_inode(inode, &inode_buf, 0)) 1507 return; 1508 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0); 1509 if (debugfs_write_inode(inode, &inode_buf, 0)) 1510 return; 1511 if (!ext2fs_inode_has_valid_blocks(&inode_buf)) 1512 return; 1513 1514 ext2fs_block_iterate(current_fs, inode, 0, NULL, 1515 release_blocks_proc, NULL); 1516 printf("\n"); 1517 ext2fs_inode_alloc_stats2(current_fs, inode, -1, 1518 LINUX_S_ISDIR(inode_buf.i_mode)); 1519 } 1520 1521 1522 void do_kill_file(int argc, char *argv[]) 1523 { 1524 ext2_ino_t inode_num; 1525 1526 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW)) 1527 return; 1528 1529 kill_file_by_inode(inode_num); 1530 } 1531 1532 void do_rm(int argc, char *argv[]) 1533 { 1534 int retval; 1535 ext2_ino_t inode_num; 1536 struct ext2_inode inode; 1537 1538 if (common_args_process(argc, argv, 2, 2, "rm", 1539 "<filename>", CHECK_FS_RW)) 1540 return; 1541 1542 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1543 if (retval) { 1544 com_err(argv[0], retval, "while trying to resolve filename"); 1545 return; 1546 } 1547 1548 if (debugfs_read_inode(inode_num, &inode, argv[0])) 1549 return; 1550 1551 if (LINUX_S_ISDIR(inode.i_mode)) { 1552 com_err(argv[0], 0, "file is a directory"); 1553 return; 1554 } 1555 1556 --inode.i_links_count; 1557 if (debugfs_write_inode(inode_num, &inode, argv[0])) 1558 return; 1559 1560 unlink_file_by_name(argv[1]); 1561 if (inode.i_links_count == 0) 1562 kill_file_by_inode(inode_num); 1563 } 1564 1565 struct rd_struct { 1566 ext2_ino_t parent; 1567 int empty; 1568 }; 1569 1570 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)), 1571 int entry EXT2FS_ATTR((unused)), 1572 struct ext2_dir_entry *dirent, 1573 int offset EXT2FS_ATTR((unused)), 1574 int blocksize EXT2FS_ATTR((unused)), 1575 char *buf EXT2FS_ATTR((unused)), 1576 void *private) 1577 { 1578 struct rd_struct *rds = (struct rd_struct *) private; 1579 1580 if (dirent->inode == 0) 1581 return 0; 1582 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.')) 1583 return 0; 1584 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') && 1585 (dirent->name[1] == '.')) { 1586 rds->parent = dirent->inode; 1587 return 0; 1588 } 1589 rds->empty = 0; 1590 return 0; 1591 } 1592 1593 void do_rmdir(int argc, char *argv[]) 1594 { 1595 int retval; 1596 ext2_ino_t inode_num; 1597 struct ext2_inode inode; 1598 struct rd_struct rds; 1599 1600 if (common_args_process(argc, argv, 2, 2, "rmdir", 1601 "<filename>", CHECK_FS_RW)) 1602 return; 1603 1604 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1605 if (retval) { 1606 com_err(argv[0], retval, "while trying to resolve filename"); 1607 return; 1608 } 1609 1610 if (debugfs_read_inode(inode_num, &inode, argv[0])) 1611 return; 1612 1613 if (!LINUX_S_ISDIR(inode.i_mode)) { 1614 com_err(argv[0], 0, "file is not a directory"); 1615 return; 1616 } 1617 1618 rds.parent = 0; 1619 rds.empty = 1; 1620 1621 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0, 1622 0, rmdir_proc, &rds); 1623 if (retval) { 1624 com_err(argv[0], retval, "while iterating over directory"); 1625 return; 1626 } 1627 if (rds.empty == 0) { 1628 com_err(argv[0], 0, "directory not empty"); 1629 return; 1630 } 1631 1632 inode.i_links_count = 0; 1633 if (debugfs_write_inode(inode_num, &inode, argv[0])) 1634 return; 1635 1636 unlink_file_by_name(argv[1]); 1637 kill_file_by_inode(inode_num); 1638 1639 if (rds.parent) { 1640 if (debugfs_read_inode(rds.parent, &inode, argv[0])) 1641 return; 1642 if (inode.i_links_count > 1) 1643 inode.i_links_count--; 1644 if (debugfs_write_inode(rds.parent, &inode, argv[0])) 1645 return; 1646 } 1647 } 1648 1649 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)), 1650 char *argv[] EXT2FS_ATTR((unused))) 1651 { 1652 FILE *out = stdout; 1653 1654 if (current_fs) 1655 fprintf(out, "Open mode: read-%s\n", 1656 current_fs->flags & EXT2_FLAG_RW ? "write" : "only"); 1657 fprintf(out, "Filesystem in use: %s\n", 1658 current_fs ? current_fs->device_name : "--none--"); 1659 } 1660 1661 void do_expand_dir(int argc, char *argv[]) 1662 { 1663 ext2_ino_t inode; 1664 int retval; 1665 1666 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW)) 1667 return; 1668 1669 retval = ext2fs_expand_dir(current_fs, inode); 1670 if (retval) 1671 com_err("ext2fs_expand_dir", retval, 0); 1672 return; 1673 } 1674 1675 void do_features(int argc, char *argv[]) 1676 { 1677 int i; 1678 1679 if (check_fs_open(argv[0])) 1680 return; 1681 1682 if ((argc != 1) && check_fs_read_write(argv[0])) 1683 return; 1684 for (i=1; i < argc; i++) { 1685 if (e2p_edit_feature(argv[i], 1686 ¤t_fs->super->s_feature_compat, 0)) 1687 com_err(argv[0], 0, "Unknown feature: %s\n", 1688 argv[i]); 1689 else 1690 ext2fs_mark_super_dirty(current_fs); 1691 } 1692 print_features(current_fs->super, stdout); 1693 } 1694 1695 void do_bmap(int argc, char *argv[]) 1696 { 1697 ext2_ino_t ino; 1698 blk_t blk, pblk; 1699 int err; 1700 errcode_t errcode; 1701 1702 if (common_args_process(argc, argv, 3, 3, argv[0], 1703 "<file> logical_blk", 0)) 1704 return; 1705 1706 ino = string_to_inode(argv[1]); 1707 if (!ino) 1708 return; 1709 blk = parse_ulong(argv[2], argv[0], "logical_block", &err); 1710 1711 errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk); 1712 if (errcode) { 1713 com_err("argv[0]", errcode, 1714 "while mapping logical block %u\n", blk); 1715 return; 1716 } 1717 printf("%u\n", pblk); 1718 } 1719 1720 void do_imap(int argc, char *argv[]) 1721 { 1722 ext2_ino_t ino; 1723 unsigned long group, block, block_nr, offset; 1724 1725 if (common_args_process(argc, argv, 2, 2, argv[0], 1726 "<file>", 0)) 1727 return; 1728 ino = string_to_inode(argv[1]); 1729 if (!ino) 1730 return; 1731 1732 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super); 1733 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) * 1734 EXT2_INODE_SIZE(current_fs->super); 1735 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super); 1736 if (!current_fs->group_desc[(unsigned)group].bg_inode_table) { 1737 com_err(argv[0], 0, "Inode table for group %lu is missing\n", 1738 group); 1739 return; 1740 } 1741 block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table + 1742 block; 1743 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1); 1744 1745 printf("Inode %d is part of block group %lu\n" 1746 "\tlocated at block %lu, offset 0x%04lx\n", ino, group, 1747 block_nr, offset); 1748 1749 } 1750 1751 void do_set_current_time(int argc, char *argv[]) 1752 { 1753 time_t now; 1754 1755 if (common_args_process(argc, argv, 2, 2, argv[0], 1756 "<time>", 0)) 1757 return; 1758 1759 now = string_to_time(argv[1]); 1760 if (now == ((time_t) -1)) { 1761 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n", 1762 argv[1]); 1763 return; 1764 1765 } else { 1766 printf("Setting current time to %s\n", time_to_string(now)); 1767 current_fs->now = now; 1768 } 1769 } 1770 1771 static int source_file(const char *cmd_file, int sci_idx) 1772 { 1773 FILE *f; 1774 char buf[256]; 1775 char *cp; 1776 int exit_status = 0; 1777 int retval; 1778 1779 if (strcmp(cmd_file, "-") == 0) 1780 f = stdin; 1781 else { 1782 f = fopen(cmd_file, "r"); 1783 if (!f) { 1784 perror(cmd_file); 1785 exit(1); 1786 } 1787 } 1788 setbuf(stdout, NULL); 1789 setbuf(stderr, NULL); 1790 while (!feof(f)) { 1791 if (fgets(buf, sizeof(buf), f) == NULL) 1792 break; 1793 cp = strchr(buf, '\n'); 1794 if (cp) 1795 *cp = 0; 1796 cp = strchr(buf, '\r'); 1797 if (cp) 1798 *cp = 0; 1799 printf("debugfs: %s\n", buf); 1800 retval = ss_execute_line(sci_idx, buf); 1801 if (retval) { 1802 ss_perror(sci_idx, retval, buf); 1803 exit_status++; 1804 } 1805 } 1806 return exit_status; 1807 } 1808 1809 int main(int argc, char **argv) 1810 { 1811 int retval; 1812 int sci_idx; 1813 const char *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]"; 1814 int c; 1815 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES; 1816 char *request = 0; 1817 int exit_status = 0; 1818 char *cmd_file = 0; 1819 blk_t superblock = 0; 1820 blk_t blocksize = 0; 1821 int catastrophic = 0; 1822 char *data_filename = 0; 1823 1824 add_error_table(&et_ext2_error_table); 1825 fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION, 1826 E2FSPROGS_DATE); 1827 1828 while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) { 1829 switch (c) { 1830 case 'R': 1831 request = optarg; 1832 break; 1833 case 'f': 1834 cmd_file = optarg; 1835 break; 1836 case 'd': 1837 data_filename = optarg; 1838 break; 1839 case 'i': 1840 open_flags |= EXT2_FLAG_IMAGE_FILE; 1841 break; 1842 case 'w': 1843 open_flags |= EXT2_FLAG_RW; 1844 break; 1845 case 'b': 1846 blocksize = parse_ulong(optarg, argv[0], 1847 "block size", 0); 1848 break; 1849 case 's': 1850 superblock = parse_ulong(optarg, argv[0], 1851 "superblock number", 0); 1852 break; 1853 case 'c': 1854 catastrophic = 1; 1855 break; 1856 case 'V': 1857 /* Print version number and exit */ 1858 fprintf(stderr, "\tUsing %s\n", 1859 error_message(EXT2_ET_BASE)); 1860 exit(0); 1861 default: 1862 com_err(argv[0], 0, usage); 1863 return 1; 1864 } 1865 } 1866 if (optind < argc) 1867 open_filesystem(argv[optind], open_flags, 1868 superblock, blocksize, catastrophic, 1869 data_filename); 1870 1871 sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL, 1872 &debug_cmds, &retval); 1873 if (retval) { 1874 ss_perror(sci_idx, retval, "creating invocation"); 1875 exit(1); 1876 } 1877 ss_get_readline(sci_idx); 1878 1879 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval); 1880 if (retval) { 1881 ss_perror(sci_idx, retval, "adding standard requests"); 1882 exit (1); 1883 } 1884 if (request) { 1885 retval = 0; 1886 retval = ss_execute_line(sci_idx, request); 1887 if (retval) { 1888 ss_perror(sci_idx, retval, request); 1889 exit_status++; 1890 } 1891 } else if (cmd_file) { 1892 exit_status = source_file(cmd_file, sci_idx); 1893 } else { 1894 ss_listen(sci_idx); 1895 } 1896 1897 if (current_fs) 1898 close_filesystem(); 1899 1900 remove_error_table(&et_ext2_error_table); 1901 return exit_status; 1902 } 1903
