debugfs.c revision 73b054259632148e789f61cce244ec4fa929721d
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 <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 20extern int optind; 21extern 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 40extern ss_request_table debug_cmds; 41ss_request_table *extra_cmds; 42const char *debug_prog_name; 43 44ext2_filsys current_fs = NULL; 45ext2_ino_t root, cwd; 46 47static void open_filesystem(char *device, int open_flags, blk_t superblock, 48 blk_t blocksize, int catastrophic, 49 char *data_filename) 50{ 51 int retval; 52 io_channel data_io = 0; 53 54 if (superblock != 0 && blocksize == 0) { 55 com_err(device, 0, "if you specify the superblock, you must also specify the block size"); 56 current_fs = NULL; 57 return; 58 } 59 60 if (data_filename) { 61 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) { 62 com_err(device, 0, 63 "The -d option is only valid when reading an e2image file"); 64 current_fs = NULL; 65 return; 66 } 67 retval = unix_io_manager->open(data_filename, 0, &data_io); 68 if (retval) { 69 com_err(data_filename, 0, "while opening data source"); 70 current_fs = NULL; 71 return; 72 } 73 } 74 75 if (catastrophic && (open_flags & EXT2_FLAG_RW)) { 76 com_err(device, 0, 77 "opening read-only because of catastrophic mode"); 78 open_flags &= ~EXT2_FLAG_RW; 79 } 80 81 retval = ext2fs_open(device, open_flags, superblock, blocksize, 82 unix_io_manager, ¤t_fs); 83 if (retval) { 84 com_err(device, retval, "while opening filesystem"); 85 current_fs = NULL; 86 return; 87 } 88 89 if (catastrophic) 90 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps"); 91 else { 92 retval = ext2fs_read_inode_bitmap(current_fs); 93 if (retval) { 94 com_err(device, retval, "while reading inode bitmap"); 95 goto errout; 96 } 97 retval = ext2fs_read_block_bitmap(current_fs); 98 if (retval) { 99 com_err(device, retval, "while reading block bitmap"); 100 goto errout; 101 } 102 } 103 104 if (data_io) { 105 retval = ext2fs_set_data_io(current_fs, data_io); 106 if (retval) { 107 com_err(device, retval, 108 "while setting data source"); 109 goto errout; 110 } 111 } 112 113 root = cwd = EXT2_ROOT_INO; 114 return; 115 116errout: 117 retval = ext2fs_close(current_fs); 118 if (retval) 119 com_err(device, retval, "while trying to close filesystem"); 120 current_fs = NULL; 121} 122 123void do_open_filesys(int argc, char **argv) 124{ 125 int c, err; 126 int catastrophic = 0; 127 blk_t superblock = 0; 128 blk_t blocksize = 0; 129 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES; 130 char *data_filename = 0; 131 132 reset_getopt(); 133 while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) { 134 switch (c) { 135 case 'i': 136 open_flags |= EXT2_FLAG_IMAGE_FILE; 137 break; 138 case 'w': 139 open_flags |= EXT2_FLAG_RW; 140 break; 141 case 'f': 142 open_flags |= EXT2_FLAG_FORCE; 143 break; 144 case 'e': 145 open_flags |= EXT2_FLAG_EXCLUSIVE; 146 break; 147 case 'c': 148 catastrophic = 1; 149 break; 150 case 'd': 151 data_filename = optarg; 152 break; 153 case 'b': 154 blocksize = parse_ulong(optarg, argv[0], 155 "block size", &err); 156 if (err) 157 return; 158 break; 159 case 's': 160 superblock = parse_ulong(optarg, argv[0], 161 "superblock number", &err); 162 if (err) 163 return; 164 break; 165 default: 166 goto print_usage; 167 } 168 } 169 if (optind != argc-1) { 170 goto print_usage; 171 } 172 if (check_fs_not_open(argv[0])) 173 return; 174 open_filesystem(argv[optind], open_flags, 175 superblock, blocksize, catastrophic, 176 data_filename); 177 return; 178 179print_usage: 180 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] " 181 "[-c] [-w] <device>\n", argv[0]); 182} 183 184void do_lcd(int argc, char **argv) 185{ 186 if (argc != 2) { 187 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>"); 188 return; 189 } 190 191 if (chdir(argv[1]) == -1) { 192 com_err(argv[0], errno, 193 "while trying to change native directory to %s", 194 argv[1]); 195 return; 196 } 197} 198 199static void close_filesystem(NOARGS) 200{ 201 int retval; 202 203 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) { 204 retval = ext2fs_write_inode_bitmap(current_fs); 205 if (retval) 206 com_err("ext2fs_write_inode_bitmap", retval, 0); 207 } 208 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) { 209 retval = ext2fs_write_block_bitmap(current_fs); 210 if (retval) 211 com_err("ext2fs_write_block_bitmap", retval, 0); 212 } 213 retval = ext2fs_close(current_fs); 214 if (retval) 215 com_err("ext2fs_close", retval, 0); 216 current_fs = NULL; 217 return; 218} 219 220void do_close_filesys(int argc, char **argv) 221{ 222 if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0)) 223 return; 224 close_filesystem(); 225} 226 227void do_init_filesys(int argc, char **argv) 228{ 229 struct ext2_super_block param; 230 errcode_t retval; 231 int err; 232 233 if (common_args_process(argc, argv, 3, 3, "initialize", 234 "<device> <blocksize>", CHECK_FS_NOTOPEN)) 235 return; 236 237 memset(¶m, 0, sizeof(struct ext2_super_block)); 238 param.s_blocks_count = parse_ulong(argv[2], argv[0], 239 "blocks count", &err); 240 if (err) 241 return; 242 retval = ext2fs_initialize(argv[1], 0, ¶m, 243 unix_io_manager, ¤t_fs); 244 if (retval) { 245 com_err(argv[1], retval, "while initializing filesystem"); 246 current_fs = NULL; 247 return; 248 } 249 root = cwd = EXT2_ROOT_INO; 250 return; 251} 252 253static void print_features(struct ext2_super_block * s, FILE *f) 254{ 255 int i, j, printed=0; 256 __u32 *mask = &s->s_feature_compat, m; 257 258 fputs("Filesystem features:", f); 259 for (i=0; i <3; i++,mask++) { 260 for (j=0,m=1; j < 32; j++, m<<=1) { 261 if (*mask & m) { 262 fprintf(f, " %s", e2p_feature2string(i, m)); 263 printed++; 264 } 265 } 266 } 267 if (printed == 0) 268 fputs("(none)", f); 269 fputs("\n", f); 270} 271 272static void print_bg_opts(struct ext2_group_desc *gdp, int mask, 273 const char *str, int *first, FILE *f) 274{ 275 if (gdp->bg_flags & mask) { 276 if (*first) { 277 fputs(" [", f); 278 *first = 0; 279 } else 280 fputs(", ", f); 281 fputs(str, f); 282 } 283} 284 285void do_show_super_stats(int argc, char *argv[]) 286{ 287 dgrp_t i; 288 FILE *out; 289 struct ext2_group_desc *gdp; 290 int c, header_only = 0; 291 int numdirs = 0, first, gdt_csum; 292 293 gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super, 294 EXT4_FEATURE_RO_COMPAT_GDT_CSUM); 295 296 reset_getopt(); 297 while ((c = getopt (argc, argv, "h")) != EOF) { 298 switch (c) { 299 case 'h': 300 header_only++; 301 break; 302 default: 303 goto print_usage; 304 } 305 } 306 if (optind != argc) { 307 goto print_usage; 308 } 309 if (check_fs_open(argv[0])) 310 return; 311 out = open_pager(); 312 313 list_super2(current_fs->super, out); 314 for (i=0; i < current_fs->group_desc_count; i++) 315 numdirs += current_fs->group_desc[i].bg_used_dirs_count; 316 fprintf(out, "Directories: %d\n", numdirs); 317 318 if (header_only) { 319 close_pager(out); 320 return; 321 } 322 323 gdp = ¤t_fs->group_desc[0]; 324 for (i = 0; i < current_fs->group_desc_count; i++, gdp++) { 325 fprintf(out, " Group %2d: block bitmap at %u, " 326 "inode bitmap at %u, " 327 "inode table at %u\n" 328 " %d free %s, " 329 "%d free %s, " 330 "%d used %s%s", 331 i, gdp->bg_block_bitmap, 332 gdp->bg_inode_bitmap, gdp->bg_inode_table, 333 gdp->bg_free_blocks_count, 334 gdp->bg_free_blocks_count != 1 ? "blocks" : "block", 335 gdp->bg_free_inodes_count, 336 gdp->bg_free_inodes_count != 1 ? "inodes" : "inode", 337 gdp->bg_used_dirs_count, 338 gdp->bg_used_dirs_count != 1 ? "directories" 339 : "directory", gdt_csum ? ", " : "\n"); 340 if (gdt_csum) 341 fprintf(out, "%d unused %s\n", 342 gdp->bg_itable_unused, 343 gdp->bg_itable_unused != 1 ? "inodes":"inode"); 344 first = 1; 345 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init", 346 &first, out); 347 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init", 348 &first, out); 349 if (gdt_csum) { 350 fprintf(out, "%sChecksum 0x%04x", 351 first ? " [":", ", gdp->bg_checksum); 352 first = 0; 353 } 354 if (!first) 355 fputs("]\n", out); 356 } 357 close_pager(out); 358 return; 359print_usage: 360 fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]); 361} 362 363void do_dirty_filesys(int argc EXT2FS_ATTR((unused)), 364 char **argv EXT2FS_ATTR((unused))) 365{ 366 if (check_fs_open(argv[0])) 367 return; 368 if (check_fs_read_write(argv[0])) 369 return; 370 371 if (argv[1] && !strcmp(argv[1], "-clean")) 372 current_fs->super->s_state |= EXT2_VALID_FS; 373 else 374 current_fs->super->s_state &= ~EXT2_VALID_FS; 375 ext2fs_mark_super_dirty(current_fs); 376} 377 378struct list_blocks_struct { 379 FILE *f; 380 e2_blkcnt_t total; 381 blk_t first_block, last_block; 382 e2_blkcnt_t first_bcnt, last_bcnt; 383 e2_blkcnt_t first; 384}; 385 386static void finish_range(struct list_blocks_struct *lb) 387{ 388 if (lb->first_block == 0) 389 return; 390 if (lb->first) 391 lb->first = 0; 392 else 393 fprintf(lb->f, ", "); 394 if (lb->first_block == lb->last_block) 395 fprintf(lb->f, "(%lld):%u", 396 (long long)lb->first_bcnt, lb->first_block); 397 else 398 fprintf(lb->f, "(%lld-%lld):%u-%u", 399 (long long)lb->first_bcnt, (long long)lb->last_bcnt, 400 lb->first_block, lb->last_block); 401 lb->first_block = 0; 402} 403 404static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)), 405 blk_t *blocknr, e2_blkcnt_t blockcnt, 406 blk_t ref_block EXT2FS_ATTR((unused)), 407 int ref_offset EXT2FS_ATTR((unused)), 408 void *private) 409{ 410 struct list_blocks_struct *lb = (struct list_blocks_struct *) private; 411 412 lb->total++; 413 if (blockcnt >= 0) { 414 /* 415 * See if we can add on to the existing range (if it exists) 416 */ 417 if (lb->first_block && 418 (lb->last_block+1 == *blocknr) && 419 (lb->last_bcnt+1 == blockcnt)) { 420 lb->last_block = *blocknr; 421 lb->last_bcnt = blockcnt; 422 return 0; 423 } 424 /* 425 * Start a new range. 426 */ 427 finish_range(lb); 428 lb->first_block = lb->last_block = *blocknr; 429 lb->first_bcnt = lb->last_bcnt = blockcnt; 430 return 0; 431 } 432 /* 433 * Not a normal block. Always force a new range. 434 */ 435 finish_range(lb); 436 if (lb->first) 437 lb->first = 0; 438 else 439 fprintf(lb->f, ", "); 440 if (blockcnt == -1) 441 fprintf(lb->f, "(IND):%u", *blocknr); 442 else if (blockcnt == -2) 443 fprintf(lb->f, "(DIND):%u", *blocknr); 444 else if (blockcnt == -3) 445 fprintf(lb->f, "(TIND):%u", *blocknr); 446 return 0; 447} 448 449static void dump_xattr_string(FILE *out, const char *str, int len) 450{ 451 int printable = 0; 452 int i; 453 454 /* check: is string "printable enough?" */ 455 for (i = 0; i < len; i++) 456 if (isprint(str[i])) 457 printable++; 458 459 if (printable <= len*7/8) 460 printable = 0; 461 462 for (i = 0; i < len; i++) 463 if (printable) 464 fprintf(out, isprint(str[i]) ? "%c" : "\\%03o", 465 (unsigned char)str[i]); 466 else 467 fprintf(out, "%02x ", (unsigned char)str[i]); 468} 469 470static void internal_dump_inode_extra(FILE *out, 471 const char *prefix EXT2FS_ATTR((unused)), 472 ext2_ino_t inode_num EXT2FS_ATTR((unused)), 473 struct ext2_inode_large *inode) 474{ 475 struct ext2_ext_attr_entry *entry; 476 __u32 *magic; 477 char *start, *end; 478 unsigned int storage_size; 479 480 fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize); 481 if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) - 482 EXT2_GOOD_OLD_INODE_SIZE) { 483 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n", 484 inode->i_extra_isize); 485 return; 486 } 487 storage_size = EXT2_INODE_SIZE(current_fs->super) - 488 EXT2_GOOD_OLD_INODE_SIZE - 489 inode->i_extra_isize; 490 magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE + 491 inode->i_extra_isize); 492 if (*magic == EXT2_EXT_ATTR_MAGIC) { 493 fprintf(out, "Extended attributes stored in inode body: \n"); 494 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super); 495 start = (char *) magic + sizeof(__u32); 496 entry = (struct ext2_ext_attr_entry *) start; 497 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) { 498 struct ext2_ext_attr_entry *next = 499 EXT2_EXT_ATTR_NEXT(entry); 500 if (entry->e_value_size > storage_size || 501 (char *) next >= end) { 502 fprintf(out, "invalid EA entry in inode\n"); 503 return; 504 } 505 fprintf(out, " "); 506 dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry), 507 entry->e_name_len); 508 fprintf(out, " = \""); 509 dump_xattr_string(out, start + entry->e_value_offs, 510 entry->e_value_size); 511 fprintf(out, "\" (%u)\n", entry->e_value_size); 512 entry = next; 513 } 514 } 515} 516 517static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode) 518{ 519 struct list_blocks_struct lb; 520 521 fprintf(f, "%sBLOCKS:\n%s", prefix, prefix); 522 lb.total = 0; 523 lb.first_block = 0; 524 lb.f = f; 525 lb.first = 1; 526 ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL, 527 list_blocks_proc, (void *)&lb); 528 finish_range(&lb); 529 if (lb.total) 530 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total); 531 fprintf(f,"\n"); 532} 533 534 535void internal_dump_inode(FILE *out, const char *prefix, 536 ext2_ino_t inode_num, struct ext2_inode *inode, 537 int do_dump_blocks) 538{ 539 const char *i_type; 540 char frag, fsize; 541 int os = current_fs->super->s_creator_os; 542 struct ext2_inode_large *large_inode; 543 int is_large_inode = 0; 544 545 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE) 546 is_large_inode = 1; 547 large_inode = (struct ext2_inode_large *) inode; 548 549 if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory"; 550 else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular"; 551 else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink"; 552 else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special"; 553 else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special"; 554 else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO"; 555 else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket"; 556 else i_type = "bad type"; 557 fprintf(out, "%sInode: %u Type: %s ", prefix, inode_num, i_type); 558 fprintf(out, "%sMode: %04o Flags: 0x%x\n", 559 prefix, inode->i_mode & 0777, inode->i_flags); 560 if (is_large_inode && large_inode->i_extra_isize >= 24) { 561 fprintf(out, "%sGeneration: %u Version: 0x%08x:%08x\n", 562 prefix, inode->i_generation, large_inode->i_version_hi, 563 inode->osd1.linux1.l_i_version); 564 } else { 565 fprintf(out, "%sGeneration: %u Version: 0x%08x\n", prefix, 566 inode->i_generation, inode->osd1.linux1.l_i_version); 567 } 568 fprintf(out, "%sUser: %5d Group: %5d Size: ", 569 prefix, inode_uid(*inode), inode_gid(*inode)); 570 if (LINUX_S_ISREG(inode->i_mode)) { 571 unsigned long long i_size = (inode->i_size | 572 ((unsigned long long)inode->i_size_high << 32)); 573 574 fprintf(out, "%llu\n", i_size); 575 } else 576 fprintf(out, "%d\n", inode->i_size); 577 if (os == EXT2_OS_HURD) 578 fprintf(out, 579 "%sFile ACL: %d Directory ACL: %d Translator: %d\n", 580 prefix, 581 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0, 582 inode->osd1.hurd1.h_i_translator); 583 else 584 fprintf(out, "%sFile ACL: %d Directory ACL: %d\n", 585 prefix, 586 inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0); 587 if (os == EXT2_OS_LINUX) 588 fprintf(out, "%sLinks: %d Blockcount: %llu\n", 589 prefix, inode->i_links_count, 590 (((unsigned long long) 591 inode->osd2.linux2.l_i_blocks_hi << 32)) + 592 inode->i_blocks); 593 else 594 fprintf(out, "%sLinks: %d Blockcount: %u\n", 595 prefix, inode->i_links_count, inode->i_blocks); 596 switch (os) { 597 case EXT2_OS_HURD: 598 frag = inode->osd2.hurd2.h_i_frag; 599 fsize = inode->osd2.hurd2.h_i_fsize; 600 break; 601 default: 602 frag = fsize = 0; 603 } 604 fprintf(out, "%sFragment: Address: %d Number: %d Size: %d\n", 605 prefix, inode->i_faddr, frag, fsize); 606 if (is_large_inode && large_inode->i_extra_isize >= 24) { 607 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix, 608 inode->i_ctime, large_inode->i_ctime_extra, 609 time_to_string(inode->i_ctime)); 610 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix, 611 inode->i_atime, large_inode->i_atime_extra, 612 time_to_string(inode->i_atime)); 613 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix, 614 inode->i_mtime, large_inode->i_mtime_extra, 615 time_to_string(inode->i_mtime)); 616 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix, 617 large_inode->i_crtime, large_inode->i_crtime_extra, 618 time_to_string(large_inode->i_crtime)); 619 } else { 620 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime, 621 time_to_string(inode->i_ctime)); 622 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime, 623 time_to_string(inode->i_atime)); 624 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime, 625 time_to_string(inode->i_mtime)); 626 } 627 if (inode->i_dtime) 628 fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime, 629 time_to_string(inode->i_dtime)); 630 if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE) 631 internal_dump_inode_extra(out, prefix, inode_num, 632 (struct ext2_inode_large *) inode); 633 if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0) 634 fprintf(out, "%sFast_link_dest: %.*s\n", prefix, 635 (int) inode->i_size, (char *)inode->i_block); 636 else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) { 637 int major, minor; 638 const char *devnote; 639 640 if (inode->i_block[0]) { 641 major = (inode->i_block[0] >> 8) & 255; 642 minor = inode->i_block[0] & 255; 643 devnote = ""; 644 } else { 645 major = (inode->i_block[1] & 0xfff00) >> 8; 646 minor = ((inode->i_block[1] & 0xff) | 647 ((inode->i_block[1] >> 12) & 0xfff00)); 648 devnote = "(New-style) "; 649 } 650 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n", 651 devnote, major, minor, major, minor); 652 } 653 else if (do_dump_blocks) 654 dump_blocks(out, prefix, inode_num); 655} 656 657static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode) 658{ 659 FILE *out; 660 661 out = open_pager(); 662 internal_dump_inode(out, "", inode_num, inode, 1); 663 close_pager(out); 664} 665 666void do_stat(int argc, char *argv[]) 667{ 668 ext2_ino_t inode; 669 struct ext2_inode * inode_buf; 670 671 if (check_fs_open(argv[0])) 672 return; 673 674 inode_buf = (struct ext2_inode *) 675 malloc(EXT2_INODE_SIZE(current_fs->super)); 676 if (!inode_buf) { 677 fprintf(stderr, "do_stat: can't allocate buffer\n"); 678 return; 679 } 680 681 if (common_inode_args_process(argc, argv, &inode, 0)) { 682 free(inode_buf); 683 return; 684 } 685 686 if (debugfs_read_inode_full(inode, inode_buf, argv[0], 687 EXT2_INODE_SIZE(current_fs->super))) { 688 free(inode_buf); 689 return; 690 } 691 692 dump_inode(inode, inode_buf); 693 free(inode_buf); 694 return; 695} 696 697void do_chroot(int argc, char *argv[]) 698{ 699 ext2_ino_t inode; 700 int retval; 701 702 if (common_inode_args_process(argc, argv, &inode, 0)) 703 return; 704 705 retval = ext2fs_check_directory(current_fs, inode); 706 if (retval) { 707 com_err(argv[1], retval, 0); 708 return; 709 } 710 root = inode; 711} 712 713void do_clri(int argc, char *argv[]) 714{ 715 ext2_ino_t inode; 716 struct ext2_inode inode_buf; 717 718 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW)) 719 return; 720 721 if (debugfs_read_inode(inode, &inode_buf, argv[0])) 722 return; 723 memset(&inode_buf, 0, sizeof(inode_buf)); 724 if (debugfs_write_inode(inode, &inode_buf, argv[0])) 725 return; 726} 727 728void do_freei(int argc, char *argv[]) 729{ 730 ext2_ino_t inode; 731 732 if (common_inode_args_process(argc, argv, &inode, 733 CHECK_FS_RW | CHECK_FS_BITMAPS)) 734 return; 735 736 if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode)) 737 com_err(argv[0], 0, "Warning: inode already clear"); 738 ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode); 739 ext2fs_mark_ib_dirty(current_fs); 740} 741 742void do_seti(int argc, char *argv[]) 743{ 744 ext2_ino_t inode; 745 746 if (common_inode_args_process(argc, argv, &inode, 747 CHECK_FS_RW | CHECK_FS_BITMAPS)) 748 return; 749 750 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode)) 751 com_err(argv[0], 0, "Warning: inode already set"); 752 ext2fs_mark_inode_bitmap(current_fs->inode_map,inode); 753 ext2fs_mark_ib_dirty(current_fs); 754} 755 756void do_testi(int argc, char *argv[]) 757{ 758 ext2_ino_t inode; 759 760 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS)) 761 return; 762 763 if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode)) 764 printf("Inode %u is marked in use\n", inode); 765 else 766 printf("Inode %u is not in use\n", inode); 767} 768 769void do_freeb(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 if (check_fs_read_write(argv[0])) 777 return; 778 while (count-- > 0) { 779 if (!ext2fs_test_block_bitmap(current_fs->block_map,block)) 780 com_err(argv[0], 0, "Warning: block %u already clear", 781 block); 782 ext2fs_unmark_block_bitmap(current_fs->block_map,block); 783 block++; 784 } 785 ext2fs_mark_bb_dirty(current_fs); 786} 787 788void do_setb(int argc, char *argv[]) 789{ 790 blk_t block; 791 blk_t count = 1; 792 793 if (common_block_args_process(argc, argv, &block, &count)) 794 return; 795 if (check_fs_read_write(argv[0])) 796 return; 797 while (count-- > 0) { 798 if (ext2fs_test_block_bitmap(current_fs->block_map,block)) 799 com_err(argv[0], 0, "Warning: block %u already set", 800 block); 801 ext2fs_mark_block_bitmap(current_fs->block_map,block); 802 block++; 803 } 804 ext2fs_mark_bb_dirty(current_fs); 805} 806 807void do_testb(int argc, char *argv[]) 808{ 809 blk_t block; 810 blk_t count = 1; 811 812 if (common_block_args_process(argc, argv, &block, &count)) 813 return; 814 while (count-- > 0) { 815 if (ext2fs_test_block_bitmap(current_fs->block_map,block)) 816 printf("Block %u marked in use\n", block); 817 else 818 printf("Block %u not in use\n", block); 819 block++; 820 } 821} 822 823static void modify_u8(char *com, const char *prompt, 824 const char *format, __u8 *val) 825{ 826 char buf[200]; 827 unsigned long v; 828 char *tmp; 829 830 sprintf(buf, format, *val); 831 printf("%30s [%s] ", prompt, buf); 832 if (!fgets(buf, sizeof(buf), stdin)) 833 return; 834 if (buf[strlen (buf) - 1] == '\n') 835 buf[strlen (buf) - 1] = '\0'; 836 if (!buf[0]) 837 return; 838 v = strtoul(buf, &tmp, 0); 839 if (*tmp) 840 com_err(com, 0, "Bad value - %s", buf); 841 else 842 *val = v; 843} 844 845static void modify_u16(char *com, const char *prompt, 846 const char *format, __u16 *val) 847{ 848 char buf[200]; 849 unsigned long v; 850 char *tmp; 851 852 sprintf(buf, format, *val); 853 printf("%30s [%s] ", prompt, buf); 854 if (!fgets(buf, sizeof(buf), stdin)) 855 return; 856 if (buf[strlen (buf) - 1] == '\n') 857 buf[strlen (buf) - 1] = '\0'; 858 if (!buf[0]) 859 return; 860 v = strtoul(buf, &tmp, 0); 861 if (*tmp) 862 com_err(com, 0, "Bad value - %s", buf); 863 else 864 *val = v; 865} 866 867static void modify_u32(char *com, const char *prompt, 868 const char *format, __u32 *val) 869{ 870 char buf[200]; 871 unsigned long v; 872 char *tmp; 873 874 sprintf(buf, format, *val); 875 printf("%30s [%s] ", prompt, buf); 876 if (!fgets(buf, sizeof(buf), stdin)) 877 return; 878 if (buf[strlen (buf) - 1] == '\n') 879 buf[strlen (buf) - 1] = '\0'; 880 if (!buf[0]) 881 return; 882 v = strtoul(buf, &tmp, 0); 883 if (*tmp) 884 com_err(com, 0, "Bad value - %s", buf); 885 else 886 *val = v; 887} 888 889 890void do_modify_inode(int argc, char *argv[]) 891{ 892 struct ext2_inode inode; 893 ext2_ino_t inode_num; 894 int i; 895 unsigned char *frag, *fsize; 896 char buf[80]; 897 int os; 898 const char *hex_format = "0x%x"; 899 const char *octal_format = "0%o"; 900 const char *decimal_format = "%d"; 901 const char *unsignedlong_format = "%lu"; 902 903 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW)) 904 return; 905 906 os = current_fs->super->s_creator_os; 907 908 if (debugfs_read_inode(inode_num, &inode, argv[1])) 909 return; 910 911 modify_u16(argv[0], "Mode", octal_format, &inode.i_mode); 912 modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid); 913 modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid); 914 modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size); 915 modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime); 916 modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime); 917 modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime); 918 modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime); 919 modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count); 920 if (os == EXT2_OS_LINUX) 921 modify_u16(argv[0], "Block count high", unsignedlong_format, 922 &inode.osd2.linux2.l_i_blocks_hi); 923 modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks); 924 modify_u32(argv[0], "File flags", hex_format, &inode.i_flags); 925 modify_u32(argv[0], "Generation", hex_format, &inode.i_generation); 926#if 0 927 modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1); 928#endif 929 modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl); 930 if (LINUX_S_ISDIR(inode.i_mode)) 931 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl); 932 else 933 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high); 934 935 if (os == EXT2_OS_HURD) 936 modify_u32(argv[0], "Translator Block", 937 decimal_format, &inode.osd1.hurd1.h_i_translator); 938 939 modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr); 940 switch (os) { 941 case EXT2_OS_HURD: 942 frag = &inode.osd2.hurd2.h_i_frag; 943 fsize = &inode.osd2.hurd2.h_i_fsize; 944 break; 945 default: 946 frag = fsize = 0; 947 } 948 if (frag) 949 modify_u8(argv[0], "Fragment number", decimal_format, frag); 950 if (fsize) 951 modify_u8(argv[0], "Fragment size", decimal_format, fsize); 952 953 for (i=0; i < EXT2_NDIR_BLOCKS; i++) { 954 sprintf(buf, "Direct Block #%d", i); 955 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]); 956 } 957 modify_u32(argv[0], "Indirect Block", decimal_format, 958 &inode.i_block[EXT2_IND_BLOCK]); 959 modify_u32(argv[0], "Double Indirect Block", decimal_format, 960 &inode.i_block[EXT2_DIND_BLOCK]); 961 modify_u32(argv[0], "Triple Indirect Block", decimal_format, 962 &inode.i_block[EXT2_TIND_BLOCK]); 963 if (debugfs_write_inode(inode_num, &inode, argv[1])) 964 return; 965} 966 967void do_change_working_dir(int argc, char *argv[]) 968{ 969 ext2_ino_t inode; 970 int retval; 971 972 if (common_inode_args_process(argc, argv, &inode, 0)) 973 return; 974 975 retval = ext2fs_check_directory(current_fs, inode); 976 if (retval) { 977 com_err(argv[1], retval, 0); 978 return; 979 } 980 cwd = inode; 981 return; 982} 983 984void do_print_working_directory(int argc, char *argv[]) 985{ 986 int retval; 987 char *pathname = NULL; 988 989 if (common_args_process(argc, argv, 1, 1, 990 "print_working_directory", "", 0)) 991 return; 992 993 retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname); 994 if (retval) { 995 com_err(argv[0], retval, 996 "while trying to get pathname of cwd"); 997 } 998 printf("[pwd] INODE: %6u PATH: %s\n", 999 cwd, pathname ? pathname : "NULL"); 1000 if (pathname) { 1001 free(pathname); 1002 pathname = NULL; 1003 } 1004 retval = ext2fs_get_pathname(current_fs, root, 0, &pathname); 1005 if (retval) { 1006 com_err(argv[0], retval, 1007 "while trying to get pathname of root"); 1008 } 1009 printf("[root] INODE: %6u PATH: %s\n", 1010 root, pathname ? pathname : "NULL"); 1011 if (pathname) { 1012 free(pathname); 1013 pathname = NULL; 1014 } 1015 return; 1016} 1017 1018/* 1019 * Given a mode, return the ext2 file type 1020 */ 1021static int ext2_file_type(unsigned int mode) 1022{ 1023 if (LINUX_S_ISREG(mode)) 1024 return EXT2_FT_REG_FILE; 1025 1026 if (LINUX_S_ISDIR(mode)) 1027 return EXT2_FT_DIR; 1028 1029 if (LINUX_S_ISCHR(mode)) 1030 return EXT2_FT_CHRDEV; 1031 1032 if (LINUX_S_ISBLK(mode)) 1033 return EXT2_FT_BLKDEV; 1034 1035 if (LINUX_S_ISLNK(mode)) 1036 return EXT2_FT_SYMLINK; 1037 1038 if (LINUX_S_ISFIFO(mode)) 1039 return EXT2_FT_FIFO; 1040 1041 if (LINUX_S_ISSOCK(mode)) 1042 return EXT2_FT_SOCK; 1043 1044 return 0; 1045} 1046 1047static void make_link(char *sourcename, char *destname) 1048{ 1049 ext2_ino_t ino; 1050 struct ext2_inode inode; 1051 int retval; 1052 ext2_ino_t dir; 1053 char *dest, *cp, *base_name; 1054 1055 /* 1056 * Get the source inode 1057 */ 1058 ino = string_to_inode(sourcename); 1059 if (!ino) 1060 return; 1061 base_name = strrchr(sourcename, '/'); 1062 if (base_name) 1063 base_name++; 1064 else 1065 base_name = sourcename; 1066 /* 1067 * Figure out the destination. First see if it exists and is 1068 * a directory. 1069 */ 1070 if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir))) 1071 dest = base_name; 1072 else { 1073 /* 1074 * OK, it doesn't exist. See if it is 1075 * '<dir>/basename' or 'basename' 1076 */ 1077 cp = strrchr(destname, '/'); 1078 if (cp) { 1079 *cp = 0; 1080 dir = string_to_inode(destname); 1081 if (!dir) 1082 return; 1083 dest = cp+1; 1084 } else { 1085 dir = cwd; 1086 dest = destname; 1087 } 1088 } 1089 1090 if (debugfs_read_inode(ino, &inode, sourcename)) 1091 return; 1092 1093 retval = ext2fs_link(current_fs, dir, dest, ino, 1094 ext2_file_type(inode.i_mode)); 1095 if (retval) 1096 com_err("make_link", retval, 0); 1097 return; 1098} 1099 1100 1101void do_link(int argc, char *argv[]) 1102{ 1103 if (common_args_process(argc, argv, 3, 3, "link", 1104 "<source file> <dest_name>", CHECK_FS_RW)) 1105 return; 1106 1107 make_link(argv[1], argv[2]); 1108} 1109 1110static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr, 1111 int blockcnt EXT2FS_ATTR((unused)), 1112 void *private EXT2FS_ATTR((unused))) 1113{ 1114 blk_t block; 1115 1116 block = *blocknr; 1117 ext2fs_block_alloc_stats(fs, block, +1); 1118 return 0; 1119} 1120 1121void do_undel(int argc, char *argv[]) 1122{ 1123 ext2_ino_t ino; 1124 struct ext2_inode inode; 1125 1126 if (common_args_process(argc, argv, 2, 3, "undelete", 1127 "<inode_num> [dest_name]", 1128 CHECK_FS_RW | CHECK_FS_BITMAPS)) 1129 return; 1130 1131 ino = string_to_inode(argv[1]); 1132 if (!ino) 1133 return; 1134 1135 if (debugfs_read_inode(ino, &inode, argv[1])) 1136 return; 1137 1138 if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) { 1139 com_err(argv[1], 0, "Inode is not marked as deleted"); 1140 return; 1141 } 1142 1143 /* 1144 * XXX this function doesn't handle changing the links count on the 1145 * parent directory when undeleting a directory. 1146 */ 1147 inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1; 1148 inode.i_dtime = 0; 1149 1150 if (debugfs_write_inode(ino, &inode, argv[0])) 1151 return; 1152 1153 ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL, 1154 mark_blocks_proc, NULL); 1155 1156 ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0); 1157 1158 if (argc > 2) 1159 make_link(argv[1], argv[2]); 1160} 1161 1162static void unlink_file_by_name(char *filename) 1163{ 1164 int retval; 1165 ext2_ino_t dir; 1166 char *base_name; 1167 1168 base_name = strrchr(filename, '/'); 1169 if (base_name) { 1170 *base_name++ = '\0'; 1171 dir = string_to_inode(filename); 1172 if (!dir) 1173 return; 1174 } else { 1175 dir = cwd; 1176 base_name = filename; 1177 } 1178 retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0); 1179 if (retval) 1180 com_err("unlink_file_by_name", retval, 0); 1181 return; 1182} 1183 1184void do_unlink(int argc, char *argv[]) 1185{ 1186 if (common_args_process(argc, argv, 2, 2, "link", 1187 "<pathname>", CHECK_FS_RW)) 1188 return; 1189 1190 unlink_file_by_name(argv[1]); 1191} 1192 1193void do_find_free_block(int argc, char *argv[]) 1194{ 1195 blk_t free_blk, goal, first_free = 0; 1196 int count; 1197 errcode_t retval; 1198 char *tmp; 1199 1200 if ((argc > 3) || (argc==2 && *argv[1] == '?')) { 1201 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]"); 1202 return; 1203 } 1204 if (check_fs_open(argv[0])) 1205 return; 1206 1207 if (argc > 1) { 1208 count = strtol(argv[1],&tmp,0); 1209 if (*tmp) { 1210 com_err(argv[0], 0, "Bad count - %s", argv[1]); 1211 return; 1212 } 1213 } else 1214 count = 1; 1215 1216 if (argc > 2) { 1217 goal = strtol(argv[2], &tmp, 0); 1218 if (*tmp) { 1219 com_err(argv[0], 0, "Bad goal - %s", argv[1]); 1220 return; 1221 } 1222 } 1223 else 1224 goal = current_fs->super->s_first_data_block; 1225 1226 printf("Free blocks found: "); 1227 free_blk = goal - 1; 1228 while (count-- > 0) { 1229 retval = ext2fs_new_block(current_fs, free_blk + 1, 0, 1230 &free_blk); 1231 if (first_free) { 1232 if (first_free == free_blk) 1233 break; 1234 } else 1235 first_free = free_blk; 1236 if (retval) { 1237 com_err("ext2fs_new_block", retval, 0); 1238 return; 1239 } else 1240 printf("%u ", free_blk); 1241 } 1242 printf("\n"); 1243} 1244 1245void do_find_free_inode(int argc, char *argv[]) 1246{ 1247 ext2_ino_t free_inode, dir; 1248 int mode; 1249 int retval; 1250 char *tmp; 1251 1252 if (argc > 3 || (argc>1 && *argv[1] == '?')) { 1253 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]"); 1254 return; 1255 } 1256 if (check_fs_open(argv[0])) 1257 return; 1258 1259 if (argc > 1) { 1260 dir = strtol(argv[1], &tmp, 0); 1261 if (*tmp) { 1262 com_err(argv[0], 0, "Bad dir - %s", argv[1]); 1263 return; 1264 } 1265 } 1266 else 1267 dir = root; 1268 if (argc > 2) { 1269 mode = strtol(argv[2], &tmp, 0); 1270 if (*tmp) { 1271 com_err(argv[0], 0, "Bad mode - %s", argv[2]); 1272 return; 1273 } 1274 } else 1275 mode = 010755; 1276 1277 retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode); 1278 if (retval) 1279 com_err("ext2fs_new_inode", retval, 0); 1280 else 1281 printf("Free inode found: %u\n", free_inode); 1282} 1283 1284static errcode_t copy_file(int fd, ext2_ino_t newfile) 1285{ 1286 ext2_file_t e2_file; 1287 errcode_t retval; 1288 int got; 1289 unsigned int written; 1290 char buf[8192]; 1291 char *ptr; 1292 1293 retval = ext2fs_file_open(current_fs, newfile, 1294 EXT2_FILE_WRITE, &e2_file); 1295 if (retval) 1296 return retval; 1297 1298 while (1) { 1299 got = read(fd, buf, sizeof(buf)); 1300 if (got == 0) 1301 break; 1302 if (got < 0) { 1303 retval = errno; 1304 goto fail; 1305 } 1306 ptr = buf; 1307 while (got > 0) { 1308 retval = ext2fs_file_write(e2_file, ptr, 1309 got, &written); 1310 if (retval) 1311 goto fail; 1312 1313 got -= written; 1314 ptr += written; 1315 } 1316 } 1317 retval = ext2fs_file_close(e2_file); 1318 return retval; 1319 1320fail: 1321 (void) ext2fs_file_close(e2_file); 1322 return retval; 1323} 1324 1325 1326void do_write(int argc, char *argv[]) 1327{ 1328 int fd; 1329 struct stat statbuf; 1330 ext2_ino_t newfile; 1331 errcode_t retval; 1332 struct ext2_inode inode; 1333 1334 if (common_args_process(argc, argv, 3, 3, "write", 1335 "<native file> <new file>", CHECK_FS_RW)) 1336 return; 1337 1338 fd = open(argv[1], O_RDONLY); 1339 if (fd < 0) { 1340 com_err(argv[1], errno, 0); 1341 return; 1342 } 1343 if (fstat(fd, &statbuf) < 0) { 1344 com_err(argv[1], errno, 0); 1345 close(fd); 1346 return; 1347 } 1348 1349 retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile); 1350 if (retval == 0) { 1351 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]); 1352 close(fd); 1353 return; 1354 } 1355 1356 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile); 1357 if (retval) { 1358 com_err(argv[0], retval, 0); 1359 close(fd); 1360 return; 1361 } 1362 printf("Allocated inode: %u\n", newfile); 1363 retval = ext2fs_link(current_fs, cwd, argv[2], newfile, 1364 EXT2_FT_REG_FILE); 1365 if (retval == EXT2_ET_DIR_NO_SPACE) { 1366 retval = ext2fs_expand_dir(current_fs, cwd); 1367 if (retval) { 1368 com_err(argv[0], retval, "while expanding directory"); 1369 close(fd); 1370 return; 1371 } 1372 retval = ext2fs_link(current_fs, cwd, argv[2], newfile, 1373 EXT2_FT_REG_FILE); 1374 } 1375 if (retval) { 1376 com_err(argv[2], retval, 0); 1377 close(fd); 1378 return; 1379 } 1380 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile)) 1381 com_err(argv[0], 0, "Warning: inode already set"); 1382 ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0); 1383 memset(&inode, 0, sizeof(inode)); 1384 inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG; 1385 inode.i_atime = inode.i_ctime = inode.i_mtime = 1386 current_fs->now ? current_fs->now : time(0); 1387 inode.i_links_count = 1; 1388 inode.i_size = statbuf.st_size; 1389 if (debugfs_write_new_inode(newfile, &inode, argv[0])) { 1390 close(fd); 1391 return; 1392 } 1393 if (LINUX_S_ISREG(inode.i_mode)) { 1394 retval = copy_file(fd, newfile); 1395 if (retval) 1396 com_err("copy_file", retval, 0); 1397 } 1398 close(fd); 1399} 1400 1401void do_mknod(int argc, char *argv[]) 1402{ 1403 unsigned long mode, major, minor; 1404 ext2_ino_t newfile; 1405 errcode_t retval; 1406 struct ext2_inode inode; 1407 int filetype, nr; 1408 1409 if (check_fs_open(argv[0])) 1410 return; 1411 if (argc < 3 || argv[2][1]) { 1412 usage: 1413 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]"); 1414 return; 1415 } 1416 mode = minor = major = 0; 1417 switch (argv[2][0]) { 1418 case 'p': 1419 mode = LINUX_S_IFIFO; 1420 filetype = EXT2_FT_FIFO; 1421 nr = 3; 1422 break; 1423 case 'c': 1424 mode = LINUX_S_IFCHR; 1425 filetype = EXT2_FT_CHRDEV; 1426 nr = 5; 1427 break; 1428 case 'b': 1429 mode = LINUX_S_IFBLK; 1430 filetype = EXT2_FT_BLKDEV; 1431 nr = 5; 1432 break; 1433 default: 1434 filetype = 0; 1435 nr = 0; 1436 } 1437 if (nr == 5) { 1438 major = strtoul(argv[3], argv+3, 0); 1439 minor = strtoul(argv[4], argv+4, 0); 1440 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0]) 1441 nr = 0; 1442 } 1443 if (argc != nr) 1444 goto usage; 1445 if (check_fs_read_write(argv[0])) 1446 return; 1447 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile); 1448 if (retval) { 1449 com_err(argv[0], retval, 0); 1450 return; 1451 } 1452 printf("Allocated inode: %u\n", newfile); 1453 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype); 1454 if (retval == EXT2_ET_DIR_NO_SPACE) { 1455 retval = ext2fs_expand_dir(current_fs, cwd); 1456 if (retval) { 1457 com_err(argv[0], retval, "while expanding directory"); 1458 return; 1459 } 1460 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, 1461 filetype); 1462 } 1463 if (retval) { 1464 com_err(argv[1], retval, 0); 1465 return; 1466 } 1467 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile)) 1468 com_err(argv[0], 0, "Warning: inode already set"); 1469 ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile); 1470 ext2fs_mark_ib_dirty(current_fs); 1471 memset(&inode, 0, sizeof(inode)); 1472 inode.i_mode = mode; 1473 inode.i_atime = inode.i_ctime = inode.i_mtime = 1474 current_fs->now ? current_fs->now : time(0); 1475 if ((major < 256) && (minor < 256)) { 1476 inode.i_block[0] = major*256+minor; 1477 inode.i_block[1] = 0; 1478 } else { 1479 inode.i_block[0] = 0; 1480 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12); 1481 } 1482 inode.i_links_count = 1; 1483 if (debugfs_write_new_inode(newfile, &inode, argv[0])) 1484 return; 1485} 1486 1487void do_mkdir(int argc, char *argv[]) 1488{ 1489 char *cp; 1490 ext2_ino_t parent; 1491 char *name; 1492 errcode_t retval; 1493 1494 if (common_args_process(argc, argv, 2, 2, "mkdir", 1495 "<filename>", CHECK_FS_RW)) 1496 return; 1497 1498 cp = strrchr(argv[1], '/'); 1499 if (cp) { 1500 *cp = 0; 1501 parent = string_to_inode(argv[1]); 1502 if (!parent) { 1503 com_err(argv[1], ENOENT, 0); 1504 return; 1505 } 1506 name = cp+1; 1507 } else { 1508 parent = cwd; 1509 name = argv[1]; 1510 } 1511 1512try_again: 1513 retval = ext2fs_mkdir(current_fs, parent, 0, name); 1514 if (retval == EXT2_ET_DIR_NO_SPACE) { 1515 retval = ext2fs_expand_dir(current_fs, parent); 1516 if (retval) { 1517 com_err(argv[0], retval, "while expanding directory"); 1518 return; 1519 } 1520 goto try_again; 1521 } 1522 if (retval) { 1523 com_err("ext2fs_mkdir", retval, 0); 1524 return; 1525 } 1526 1527} 1528 1529static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr, 1530 int blockcnt EXT2FS_ATTR((unused)), 1531 void *private EXT2FS_ATTR((unused))) 1532{ 1533 blk_t block; 1534 1535 block = *blocknr; 1536 ext2fs_block_alloc_stats(fs, block, -1); 1537 return 0; 1538} 1539 1540static void kill_file_by_inode(ext2_ino_t inode) 1541{ 1542 struct ext2_inode inode_buf; 1543 1544 if (debugfs_read_inode(inode, &inode_buf, 0)) 1545 return; 1546 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0); 1547 if (debugfs_write_inode(inode, &inode_buf, 0)) 1548 return; 1549 if (!ext2fs_inode_has_valid_blocks(&inode_buf)) 1550 return; 1551 1552 ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL, 1553 release_blocks_proc, NULL); 1554 printf("\n"); 1555 ext2fs_inode_alloc_stats2(current_fs, inode, -1, 1556 LINUX_S_ISDIR(inode_buf.i_mode)); 1557} 1558 1559 1560void do_kill_file(int argc, char *argv[]) 1561{ 1562 ext2_ino_t inode_num; 1563 1564 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW)) 1565 return; 1566 1567 kill_file_by_inode(inode_num); 1568} 1569 1570void do_rm(int argc, char *argv[]) 1571{ 1572 int retval; 1573 ext2_ino_t inode_num; 1574 struct ext2_inode inode; 1575 1576 if (common_args_process(argc, argv, 2, 2, "rm", 1577 "<filename>", CHECK_FS_RW)) 1578 return; 1579 1580 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1581 if (retval) { 1582 com_err(argv[0], retval, "while trying to resolve filename"); 1583 return; 1584 } 1585 1586 if (debugfs_read_inode(inode_num, &inode, argv[0])) 1587 return; 1588 1589 if (LINUX_S_ISDIR(inode.i_mode)) { 1590 com_err(argv[0], 0, "file is a directory"); 1591 return; 1592 } 1593 1594 --inode.i_links_count; 1595 if (debugfs_write_inode(inode_num, &inode, argv[0])) 1596 return; 1597 1598 unlink_file_by_name(argv[1]); 1599 if (inode.i_links_count == 0) 1600 kill_file_by_inode(inode_num); 1601} 1602 1603struct rd_struct { 1604 ext2_ino_t parent; 1605 int empty; 1606}; 1607 1608static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)), 1609 int entry EXT2FS_ATTR((unused)), 1610 struct ext2_dir_entry *dirent, 1611 int offset EXT2FS_ATTR((unused)), 1612 int blocksize EXT2FS_ATTR((unused)), 1613 char *buf EXT2FS_ATTR((unused)), 1614 void *private) 1615{ 1616 struct rd_struct *rds = (struct rd_struct *) private; 1617 1618 if (dirent->inode == 0) 1619 return 0; 1620 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.')) 1621 return 0; 1622 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') && 1623 (dirent->name[1] == '.')) { 1624 rds->parent = dirent->inode; 1625 return 0; 1626 } 1627 rds->empty = 0; 1628 return 0; 1629} 1630 1631void do_rmdir(int argc, char *argv[]) 1632{ 1633 int retval; 1634 ext2_ino_t inode_num; 1635 struct ext2_inode inode; 1636 struct rd_struct rds; 1637 1638 if (common_args_process(argc, argv, 2, 2, "rmdir", 1639 "<filename>", CHECK_FS_RW)) 1640 return; 1641 1642 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1643 if (retval) { 1644 com_err(argv[0], retval, "while trying to resolve filename"); 1645 return; 1646 } 1647 1648 if (debugfs_read_inode(inode_num, &inode, argv[0])) 1649 return; 1650 1651 if (!LINUX_S_ISDIR(inode.i_mode)) { 1652 com_err(argv[0], 0, "file is not a directory"); 1653 return; 1654 } 1655 1656 rds.parent = 0; 1657 rds.empty = 1; 1658 1659 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0, 1660 0, rmdir_proc, &rds); 1661 if (retval) { 1662 com_err(argv[0], retval, "while iterating over directory"); 1663 return; 1664 } 1665 if (rds.empty == 0) { 1666 com_err(argv[0], 0, "directory not empty"); 1667 return; 1668 } 1669 1670 inode.i_links_count = 0; 1671 if (debugfs_write_inode(inode_num, &inode, argv[0])) 1672 return; 1673 1674 unlink_file_by_name(argv[1]); 1675 kill_file_by_inode(inode_num); 1676 1677 if (rds.parent) { 1678 if (debugfs_read_inode(rds.parent, &inode, argv[0])) 1679 return; 1680 if (inode.i_links_count > 1) 1681 inode.i_links_count--; 1682 if (debugfs_write_inode(rds.parent, &inode, argv[0])) 1683 return; 1684 } 1685} 1686 1687void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)), 1688 char *argv[] EXT2FS_ATTR((unused))) 1689{ 1690 FILE *out = stdout; 1691 1692 if (current_fs) 1693 fprintf(out, "Open mode: read-%s\n", 1694 current_fs->flags & EXT2_FLAG_RW ? "write" : "only"); 1695 fprintf(out, "Filesystem in use: %s\n", 1696 current_fs ? current_fs->device_name : "--none--"); 1697} 1698 1699void do_expand_dir(int argc, char *argv[]) 1700{ 1701 ext2_ino_t inode; 1702 int retval; 1703 1704 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW)) 1705 return; 1706 1707 retval = ext2fs_expand_dir(current_fs, inode); 1708 if (retval) 1709 com_err("ext2fs_expand_dir", retval, 0); 1710 return; 1711} 1712 1713void do_features(int argc, char *argv[]) 1714{ 1715 int i; 1716 1717 if (check_fs_open(argv[0])) 1718 return; 1719 1720 if ((argc != 1) && check_fs_read_write(argv[0])) 1721 return; 1722 for (i=1; i < argc; i++) { 1723 if (e2p_edit_feature(argv[i], 1724 ¤t_fs->super->s_feature_compat, 0)) 1725 com_err(argv[0], 0, "Unknown feature: %s\n", 1726 argv[i]); 1727 else 1728 ext2fs_mark_super_dirty(current_fs); 1729 } 1730 print_features(current_fs->super, stdout); 1731} 1732 1733void do_bmap(int argc, char *argv[]) 1734{ 1735 ext2_ino_t ino; 1736 blk_t blk, pblk; 1737 int err; 1738 errcode_t errcode; 1739 1740 if (common_args_process(argc, argv, 3, 3, argv[0], 1741 "<file> logical_blk", 0)) 1742 return; 1743 1744 ino = string_to_inode(argv[1]); 1745 if (!ino) 1746 return; 1747 blk = parse_ulong(argv[2], argv[0], "logical_block", &err); 1748 1749 errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk); 1750 if (errcode) { 1751 com_err("argv[0]", errcode, 1752 "while mapping logical block %u\n", blk); 1753 return; 1754 } 1755 printf("%u\n", pblk); 1756} 1757 1758void do_imap(int argc, char *argv[]) 1759{ 1760 ext2_ino_t ino; 1761 unsigned long group, block, block_nr, offset; 1762 1763 if (common_args_process(argc, argv, 2, 2, argv[0], 1764 "<file>", 0)) 1765 return; 1766 ino = string_to_inode(argv[1]); 1767 if (!ino) 1768 return; 1769 1770 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super); 1771 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) * 1772 EXT2_INODE_SIZE(current_fs->super); 1773 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super); 1774 if (!current_fs->group_desc[(unsigned)group].bg_inode_table) { 1775 com_err(argv[0], 0, "Inode table for group %lu is missing\n", 1776 group); 1777 return; 1778 } 1779 block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table + 1780 block; 1781 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1); 1782 1783 printf("Inode %d is part of block group %lu\n" 1784 "\tlocated at block %lu, offset 0x%04lx\n", ino, group, 1785 block_nr, offset); 1786 1787} 1788 1789void do_set_current_time(int argc, char *argv[]) 1790{ 1791 time_t now; 1792 1793 if (common_args_process(argc, argv, 2, 2, argv[0], 1794 "<time>", 0)) 1795 return; 1796 1797 now = string_to_time(argv[1]); 1798 if (now == ((time_t) -1)) { 1799 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n", 1800 argv[1]); 1801 return; 1802 1803 } else { 1804 printf("Setting current time to %s\n", time_to_string(now)); 1805 current_fs->now = now; 1806 } 1807} 1808 1809static int source_file(const char *cmd_file, int sci_idx) 1810{ 1811 FILE *f; 1812 char buf[256]; 1813 char *cp; 1814 int exit_status = 0; 1815 int retval; 1816 1817 if (strcmp(cmd_file, "-") == 0) 1818 f = stdin; 1819 else { 1820 f = fopen(cmd_file, "r"); 1821 if (!f) { 1822 perror(cmd_file); 1823 exit(1); 1824 } 1825 } 1826 fflush(stdout); 1827 fflush(stderr); 1828 setbuf(stdout, NULL); 1829 setbuf(stderr, NULL); 1830 while (!feof(f)) { 1831 if (fgets(buf, sizeof(buf), f) == NULL) 1832 break; 1833 cp = strchr(buf, '\n'); 1834 if (cp) 1835 *cp = 0; 1836 cp = strchr(buf, '\r'); 1837 if (cp) 1838 *cp = 0; 1839 printf("debugfs: %s\n", buf); 1840 retval = ss_execute_line(sci_idx, buf); 1841 if (retval) { 1842 ss_perror(sci_idx, retval, buf); 1843 exit_status++; 1844 } 1845 } 1846 return exit_status; 1847} 1848 1849int main(int argc, char **argv) 1850{ 1851 int retval; 1852 int sci_idx; 1853 const char *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]"; 1854 int c; 1855 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES; 1856 char *request = 0; 1857 int exit_status = 0; 1858 char *cmd_file = 0; 1859 blk_t superblock = 0; 1860 blk_t blocksize = 0; 1861 int catastrophic = 0; 1862 char *data_filename = 0; 1863 1864 if (debug_prog_name == 0) 1865 debug_prog_name = "debugfs"; 1866 1867 add_error_table(&et_ext2_error_table); 1868 fprintf (stderr, "%s %s (%s)\n", debug_prog_name, 1869 E2FSPROGS_VERSION, E2FSPROGS_DATE); 1870 1871 while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) { 1872 switch (c) { 1873 case 'R': 1874 request = optarg; 1875 break; 1876 case 'f': 1877 cmd_file = optarg; 1878 break; 1879 case 'd': 1880 data_filename = optarg; 1881 break; 1882 case 'i': 1883 open_flags |= EXT2_FLAG_IMAGE_FILE; 1884 break; 1885 case 'w': 1886 open_flags |= EXT2_FLAG_RW; 1887 break; 1888 case 'b': 1889 blocksize = parse_ulong(optarg, argv[0], 1890 "block size", 0); 1891 break; 1892 case 's': 1893 superblock = parse_ulong(optarg, argv[0], 1894 "superblock number", 0); 1895 break; 1896 case 'c': 1897 catastrophic = 1; 1898 break; 1899 case 'V': 1900 /* Print version number and exit */ 1901 fprintf(stderr, "\tUsing %s\n", 1902 error_message(EXT2_ET_BASE)); 1903 exit(0); 1904 default: 1905 com_err(argv[0], 0, usage, debug_prog_name); 1906 return 1; 1907 } 1908 } 1909 if (optind < argc) 1910 open_filesystem(argv[optind], open_flags, 1911 superblock, blocksize, catastrophic, 1912 data_filename); 1913 1914 sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL, 1915 &debug_cmds, &retval); 1916 if (retval) { 1917 ss_perror(sci_idx, retval, "creating invocation"); 1918 exit(1); 1919 } 1920 ss_get_readline(sci_idx); 1921 1922 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval); 1923 if (retval) { 1924 ss_perror(sci_idx, retval, "adding standard requests"); 1925 exit (1); 1926 } 1927 if (extra_cmds) 1928 ss_add_request_table (sci_idx, extra_cmds, 1, &retval); 1929 if (retval) { 1930 ss_perror(sci_idx, retval, "adding extra requests"); 1931 exit (1); 1932 } 1933 if (request) { 1934 retval = 0; 1935 retval = ss_execute_line(sci_idx, request); 1936 if (retval) { 1937 ss_perror(sci_idx, retval, request); 1938 exit_status++; 1939 } 1940 } else if (cmd_file) { 1941 exit_status = source_file(cmd_file, sci_idx); 1942 } else { 1943 ss_listen(sci_idx); 1944 } 1945 1946 if (current_fs) 1947 close_filesystem(); 1948 1949 remove_error_table(&et_ext2_error_table); 1950 return exit_status; 1951} 1952