debugfs.c revision eefa4d950cf4da9a835812fe44fb7973ec147cbf
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#include "jfs_user.h" 40 41extern ss_request_table debug_cmds; 42ss_request_table *extra_cmds; 43const char *debug_prog_name; 44 45ext2_filsys current_fs = NULL; 46ext2_ino_t root, cwd; 47 48static void open_filesystem(char *device, int open_flags, blk_t superblock, 49 blk_t blocksize, int catastrophic, 50 char *data_filename) 51{ 52 int retval; 53 io_channel data_io = 0; 54 55 if (superblock != 0 && blocksize == 0) { 56 com_err(device, 0, "if you specify the superblock, you must also specify the block size"); 57 current_fs = NULL; 58 return; 59 } 60 61 if (data_filename) { 62 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) { 63 com_err(device, 0, 64 "The -d option is only valid when reading an e2image file"); 65 current_fs = NULL; 66 return; 67 } 68 retval = unix_io_manager->open(data_filename, 0, &data_io); 69 if (retval) { 70 com_err(data_filename, 0, "while opening data source"); 71 current_fs = NULL; 72 return; 73 } 74 } 75 76 if (catastrophic && (open_flags & EXT2_FLAG_RW)) { 77 com_err(device, 0, 78 "opening read-only because of catastrophic mode"); 79 open_flags &= ~EXT2_FLAG_RW; 80 } 81 82 retval = ext2fs_open(device, open_flags, superblock, blocksize, 83 unix_io_manager, ¤t_fs); 84 if (retval) { 85 com_err(device, retval, "while opening filesystem"); 86 current_fs = NULL; 87 return; 88 } 89 90 if (catastrophic) 91 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps"); 92 else { 93 retval = ext2fs_read_inode_bitmap(current_fs); 94 if (retval) { 95 com_err(device, retval, "while reading inode bitmap"); 96 goto errout; 97 } 98 retval = ext2fs_read_block_bitmap(current_fs); 99 if (retval) { 100 com_err(device, retval, "while reading block bitmap"); 101 goto errout; 102 } 103 } 104 105 if (data_io) { 106 retval = ext2fs_set_data_io(current_fs, data_io); 107 if (retval) { 108 com_err(device, retval, 109 "while setting data source"); 110 goto errout; 111 } 112 } 113 114 root = cwd = EXT2_ROOT_INO; 115 return; 116 117errout: 118 retval = ext2fs_close(current_fs); 119 if (retval) 120 com_err(device, retval, "while trying to close filesystem"); 121 current_fs = NULL; 122} 123 124void do_open_filesys(int argc, char **argv) 125{ 126 int c, err; 127 int catastrophic = 0; 128 blk_t superblock = 0; 129 blk_t blocksize = 0; 130 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES; 131 char *data_filename = 0; 132 133 reset_getopt(); 134 while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) { 135 switch (c) { 136 case 'i': 137 open_flags |= EXT2_FLAG_IMAGE_FILE; 138 break; 139 case 'w': 140 open_flags |= EXT2_FLAG_RW; 141 break; 142 case 'f': 143 open_flags |= EXT2_FLAG_FORCE; 144 break; 145 case 'e': 146 open_flags |= EXT2_FLAG_EXCLUSIVE; 147 break; 148 case 'c': 149 catastrophic = 1; 150 break; 151 case 'd': 152 data_filename = optarg; 153 break; 154 case 'b': 155 blocksize = parse_ulong(optarg, argv[0], 156 "block size", &err); 157 if (err) 158 return; 159 break; 160 case 's': 161 superblock = parse_ulong(optarg, argv[0], 162 "superblock number", &err); 163 if (err) 164 return; 165 break; 166 default: 167 goto print_usage; 168 } 169 } 170 if (optind != argc-1) { 171 goto print_usage; 172 } 173 if (check_fs_not_open(argv[0])) 174 return; 175 open_filesystem(argv[optind], open_flags, 176 superblock, blocksize, catastrophic, 177 data_filename); 178 return; 179 180print_usage: 181 fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] " 182 "[-c] [-w] <device>\n", argv[0]); 183} 184 185void do_lcd(int argc, char **argv) 186{ 187 if (argc != 2) { 188 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>"); 189 return; 190 } 191 192 if (chdir(argv[1]) == -1) { 193 com_err(argv[0], errno, 194 "while trying to change native directory to %s", 195 argv[1]); 196 return; 197 } 198} 199 200static void close_filesystem(NOARGS) 201{ 202 int retval; 203 204 if (current_fs->flags & EXT2_FLAG_IB_DIRTY) { 205 retval = ext2fs_write_inode_bitmap(current_fs); 206 if (retval) 207 com_err("ext2fs_write_inode_bitmap", retval, 0); 208 } 209 if (current_fs->flags & EXT2_FLAG_BB_DIRTY) { 210 retval = ext2fs_write_block_bitmap(current_fs); 211 if (retval) 212 com_err("ext2fs_write_block_bitmap", retval, 0); 213 } 214 retval = ext2fs_close(current_fs); 215 if (retval) 216 com_err("ext2fs_close", retval, 0); 217 current_fs = NULL; 218 return; 219} 220 221void do_close_filesys(int argc, char **argv) 222{ 223 if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0)) 224 return; 225 close_filesystem(); 226} 227 228void do_init_filesys(int argc, char **argv) 229{ 230 struct ext2_super_block param; 231 errcode_t retval; 232 int err; 233 234 if (common_args_process(argc, argv, 3, 3, "initialize", 235 "<device> <blocksize>", CHECK_FS_NOTOPEN)) 236 return; 237 238 memset(¶m, 0, sizeof(struct ext2_super_block)); 239 param.s_blocks_count = parse_ulong(argv[2], argv[0], 240 "blocks count", &err); 241 if (err) 242 return; 243 retval = ext2fs_initialize(argv[1], 0, ¶m, 244 unix_io_manager, ¤t_fs); 245 if (retval) { 246 com_err(argv[1], retval, "while initializing filesystem"); 247 current_fs = NULL; 248 return; 249 } 250 root = cwd = EXT2_ROOT_INO; 251 return; 252} 253 254static void print_features(struct ext2_super_block * s, FILE *f) 255{ 256 int i, j, printed=0; 257 __u32 *mask = &s->s_feature_compat, m; 258 259 fputs("Filesystem features:", f); 260 for (i=0; i <3; i++,mask++) { 261 for (j=0,m=1; j < 32; j++, m<<=1) { 262 if (*mask & m) { 263 fprintf(f, " %s", e2p_feature2string(i, m)); 264 printed++; 265 } 266 } 267 } 268 if (printed == 0) 269 fputs("(none)", f); 270 fputs("\n", f); 271} 272 273static void print_bg_opts(struct ext2_group_desc *gdp, int mask, 274 const char *str, int *first, FILE *f) 275{ 276 if (gdp->bg_flags & mask) { 277 if (*first) { 278 fputs(" [", f); 279 *first = 0; 280 } else 281 fputs(", ", f); 282 fputs(str, f); 283 } 284} 285 286void do_show_super_stats(int argc, char *argv[]) 287{ 288 dgrp_t i; 289 FILE *out; 290 struct ext2_group_desc *gdp; 291 int c, header_only = 0; 292 int numdirs = 0, first, gdt_csum; 293 294 reset_getopt(); 295 while ((c = getopt (argc, argv, "h")) != EOF) { 296 switch (c) { 297 case 'h': 298 header_only++; 299 break; 300 default: 301 goto print_usage; 302 } 303 } 304 if (optind != argc) { 305 goto print_usage; 306 } 307 if (check_fs_open(argv[0])) 308 return; 309 out = open_pager(); 310 311 list_super2(current_fs->super, out); 312 for (i=0; i < current_fs->group_desc_count; i++) 313 numdirs += current_fs->group_desc[i].bg_used_dirs_count; 314 fprintf(out, "Directories: %d\n", numdirs); 315 316 if (header_only) { 317 close_pager(out); 318 return; 319 } 320 321 gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super, 322 EXT4_FEATURE_RO_COMPAT_GDT_CSUM); 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 (current_fs->super->s_feature_incompat & 1390 EXT3_FEATURE_INCOMPAT_EXTENTS) 1391 inode.i_flags |= EXT4_EXTENTS_FL; 1392 if (debugfs_write_new_inode(newfile, &inode, argv[0])) { 1393 close(fd); 1394 return; 1395 } 1396 if (LINUX_S_ISREG(inode.i_mode)) { 1397 retval = copy_file(fd, newfile); 1398 if (retval) 1399 com_err("copy_file", retval, 0); 1400 } 1401 close(fd); 1402} 1403 1404void do_mknod(int argc, char *argv[]) 1405{ 1406 unsigned long mode, major, minor; 1407 ext2_ino_t newfile; 1408 errcode_t retval; 1409 struct ext2_inode inode; 1410 int filetype, nr; 1411 1412 if (check_fs_open(argv[0])) 1413 return; 1414 if (argc < 3 || argv[2][1]) { 1415 usage: 1416 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]"); 1417 return; 1418 } 1419 mode = minor = major = 0; 1420 switch (argv[2][0]) { 1421 case 'p': 1422 mode = LINUX_S_IFIFO; 1423 filetype = EXT2_FT_FIFO; 1424 nr = 3; 1425 break; 1426 case 'c': 1427 mode = LINUX_S_IFCHR; 1428 filetype = EXT2_FT_CHRDEV; 1429 nr = 5; 1430 break; 1431 case 'b': 1432 mode = LINUX_S_IFBLK; 1433 filetype = EXT2_FT_BLKDEV; 1434 nr = 5; 1435 break; 1436 default: 1437 filetype = 0; 1438 nr = 0; 1439 } 1440 if (nr == 5) { 1441 major = strtoul(argv[3], argv+3, 0); 1442 minor = strtoul(argv[4], argv+4, 0); 1443 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0]) 1444 nr = 0; 1445 } 1446 if (argc != nr) 1447 goto usage; 1448 if (check_fs_read_write(argv[0])) 1449 return; 1450 retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile); 1451 if (retval) { 1452 com_err(argv[0], retval, 0); 1453 return; 1454 } 1455 printf("Allocated inode: %u\n", newfile); 1456 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype); 1457 if (retval == EXT2_ET_DIR_NO_SPACE) { 1458 retval = ext2fs_expand_dir(current_fs, cwd); 1459 if (retval) { 1460 com_err(argv[0], retval, "while expanding directory"); 1461 return; 1462 } 1463 retval = ext2fs_link(current_fs, cwd, argv[1], newfile, 1464 filetype); 1465 } 1466 if (retval) { 1467 com_err(argv[1], retval, 0); 1468 return; 1469 } 1470 if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile)) 1471 com_err(argv[0], 0, "Warning: inode already set"); 1472 ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile); 1473 ext2fs_mark_ib_dirty(current_fs); 1474 memset(&inode, 0, sizeof(inode)); 1475 inode.i_mode = mode; 1476 inode.i_atime = inode.i_ctime = inode.i_mtime = 1477 current_fs->now ? current_fs->now : time(0); 1478 if ((major < 256) && (minor < 256)) { 1479 inode.i_block[0] = major*256+minor; 1480 inode.i_block[1] = 0; 1481 } else { 1482 inode.i_block[0] = 0; 1483 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12); 1484 } 1485 inode.i_links_count = 1; 1486 if (debugfs_write_new_inode(newfile, &inode, argv[0])) 1487 return; 1488} 1489 1490void do_mkdir(int argc, char *argv[]) 1491{ 1492 char *cp; 1493 ext2_ino_t parent; 1494 char *name; 1495 errcode_t retval; 1496 1497 if (common_args_process(argc, argv, 2, 2, "mkdir", 1498 "<filename>", CHECK_FS_RW)) 1499 return; 1500 1501 cp = strrchr(argv[1], '/'); 1502 if (cp) { 1503 *cp = 0; 1504 parent = string_to_inode(argv[1]); 1505 if (!parent) { 1506 com_err(argv[1], ENOENT, 0); 1507 return; 1508 } 1509 name = cp+1; 1510 } else { 1511 parent = cwd; 1512 name = argv[1]; 1513 } 1514 1515try_again: 1516 retval = ext2fs_mkdir(current_fs, parent, 0, name); 1517 if (retval == EXT2_ET_DIR_NO_SPACE) { 1518 retval = ext2fs_expand_dir(current_fs, parent); 1519 if (retval) { 1520 com_err(argv[0], retval, "while expanding directory"); 1521 return; 1522 } 1523 goto try_again; 1524 } 1525 if (retval) { 1526 com_err("ext2fs_mkdir", retval, 0); 1527 return; 1528 } 1529 1530} 1531 1532static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr, 1533 int blockcnt EXT2FS_ATTR((unused)), 1534 void *private EXT2FS_ATTR((unused))) 1535{ 1536 blk_t block; 1537 1538 block = *blocknr; 1539 ext2fs_block_alloc_stats(fs, block, -1); 1540 return 0; 1541} 1542 1543static void kill_file_by_inode(ext2_ino_t inode) 1544{ 1545 struct ext2_inode inode_buf; 1546 1547 if (debugfs_read_inode(inode, &inode_buf, 0)) 1548 return; 1549 inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0); 1550 if (debugfs_write_inode(inode, &inode_buf, 0)) 1551 return; 1552 if (!ext2fs_inode_has_valid_blocks(&inode_buf)) 1553 return; 1554 1555 ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL, 1556 release_blocks_proc, NULL); 1557 printf("\n"); 1558 ext2fs_inode_alloc_stats2(current_fs, inode, -1, 1559 LINUX_S_ISDIR(inode_buf.i_mode)); 1560} 1561 1562 1563void do_kill_file(int argc, char *argv[]) 1564{ 1565 ext2_ino_t inode_num; 1566 1567 if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW)) 1568 return; 1569 1570 kill_file_by_inode(inode_num); 1571} 1572 1573void do_rm(int argc, char *argv[]) 1574{ 1575 int retval; 1576 ext2_ino_t inode_num; 1577 struct ext2_inode inode; 1578 1579 if (common_args_process(argc, argv, 2, 2, "rm", 1580 "<filename>", CHECK_FS_RW)) 1581 return; 1582 1583 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1584 if (retval) { 1585 com_err(argv[0], retval, "while trying to resolve filename"); 1586 return; 1587 } 1588 1589 if (debugfs_read_inode(inode_num, &inode, argv[0])) 1590 return; 1591 1592 if (LINUX_S_ISDIR(inode.i_mode)) { 1593 com_err(argv[0], 0, "file is a directory"); 1594 return; 1595 } 1596 1597 --inode.i_links_count; 1598 if (debugfs_write_inode(inode_num, &inode, argv[0])) 1599 return; 1600 1601 unlink_file_by_name(argv[1]); 1602 if (inode.i_links_count == 0) 1603 kill_file_by_inode(inode_num); 1604} 1605 1606struct rd_struct { 1607 ext2_ino_t parent; 1608 int empty; 1609}; 1610 1611static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)), 1612 int entry EXT2FS_ATTR((unused)), 1613 struct ext2_dir_entry *dirent, 1614 int offset EXT2FS_ATTR((unused)), 1615 int blocksize EXT2FS_ATTR((unused)), 1616 char *buf EXT2FS_ATTR((unused)), 1617 void *private) 1618{ 1619 struct rd_struct *rds = (struct rd_struct *) private; 1620 1621 if (dirent->inode == 0) 1622 return 0; 1623 if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.')) 1624 return 0; 1625 if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') && 1626 (dirent->name[1] == '.')) { 1627 rds->parent = dirent->inode; 1628 return 0; 1629 } 1630 rds->empty = 0; 1631 return 0; 1632} 1633 1634void do_rmdir(int argc, char *argv[]) 1635{ 1636 int retval; 1637 ext2_ino_t inode_num; 1638 struct ext2_inode inode; 1639 struct rd_struct rds; 1640 1641 if (common_args_process(argc, argv, 2, 2, "rmdir", 1642 "<filename>", CHECK_FS_RW)) 1643 return; 1644 1645 retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num); 1646 if (retval) { 1647 com_err(argv[0], retval, "while trying to resolve filename"); 1648 return; 1649 } 1650 1651 if (debugfs_read_inode(inode_num, &inode, argv[0])) 1652 return; 1653 1654 if (!LINUX_S_ISDIR(inode.i_mode)) { 1655 com_err(argv[0], 0, "file is not a directory"); 1656 return; 1657 } 1658 1659 rds.parent = 0; 1660 rds.empty = 1; 1661 1662 retval = ext2fs_dir_iterate2(current_fs, inode_num, 0, 1663 0, rmdir_proc, &rds); 1664 if (retval) { 1665 com_err(argv[0], retval, "while iterating over directory"); 1666 return; 1667 } 1668 if (rds.empty == 0) { 1669 com_err(argv[0], 0, "directory not empty"); 1670 return; 1671 } 1672 1673 inode.i_links_count = 0; 1674 if (debugfs_write_inode(inode_num, &inode, argv[0])) 1675 return; 1676 1677 unlink_file_by_name(argv[1]); 1678 kill_file_by_inode(inode_num); 1679 1680 if (rds.parent) { 1681 if (debugfs_read_inode(rds.parent, &inode, argv[0])) 1682 return; 1683 if (inode.i_links_count > 1) 1684 inode.i_links_count--; 1685 if (debugfs_write_inode(rds.parent, &inode, argv[0])) 1686 return; 1687 } 1688} 1689 1690void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)), 1691 char *argv[] EXT2FS_ATTR((unused))) 1692{ 1693 FILE *out = stdout; 1694 1695 if (current_fs) 1696 fprintf(out, "Open mode: read-%s\n", 1697 current_fs->flags & EXT2_FLAG_RW ? "write" : "only"); 1698 fprintf(out, "Filesystem in use: %s\n", 1699 current_fs ? current_fs->device_name : "--none--"); 1700} 1701 1702void do_expand_dir(int argc, char *argv[]) 1703{ 1704 ext2_ino_t inode; 1705 int retval; 1706 1707 if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW)) 1708 return; 1709 1710 retval = ext2fs_expand_dir(current_fs, inode); 1711 if (retval) 1712 com_err("ext2fs_expand_dir", retval, 0); 1713 return; 1714} 1715 1716void do_features(int argc, char *argv[]) 1717{ 1718 int i; 1719 1720 if (check_fs_open(argv[0])) 1721 return; 1722 1723 if ((argc != 1) && check_fs_read_write(argv[0])) 1724 return; 1725 for (i=1; i < argc; i++) { 1726 if (e2p_edit_feature(argv[i], 1727 ¤t_fs->super->s_feature_compat, 0)) 1728 com_err(argv[0], 0, "Unknown feature: %s\n", 1729 argv[i]); 1730 else 1731 ext2fs_mark_super_dirty(current_fs); 1732 } 1733 print_features(current_fs->super, stdout); 1734} 1735 1736void do_bmap(int argc, char *argv[]) 1737{ 1738 ext2_ino_t ino; 1739 blk_t blk, pblk; 1740 int err; 1741 errcode_t errcode; 1742 1743 if (common_args_process(argc, argv, 3, 3, argv[0], 1744 "<file> logical_blk", 0)) 1745 return; 1746 1747 ino = string_to_inode(argv[1]); 1748 if (!ino) 1749 return; 1750 blk = parse_ulong(argv[2], argv[0], "logical_block", &err); 1751 1752 errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk); 1753 if (errcode) { 1754 com_err("argv[0]", errcode, 1755 "while mapping logical block %u\n", blk); 1756 return; 1757 } 1758 printf("%u\n", pblk); 1759} 1760 1761void do_imap(int argc, char *argv[]) 1762{ 1763 ext2_ino_t ino; 1764 unsigned long group, block, block_nr, offset; 1765 1766 if (common_args_process(argc, argv, 2, 2, argv[0], 1767 "<file>", 0)) 1768 return; 1769 ino = string_to_inode(argv[1]); 1770 if (!ino) 1771 return; 1772 1773 group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super); 1774 offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) * 1775 EXT2_INODE_SIZE(current_fs->super); 1776 block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super); 1777 if (!current_fs->group_desc[(unsigned)group].bg_inode_table) { 1778 com_err(argv[0], 0, "Inode table for group %lu is missing\n", 1779 group); 1780 return; 1781 } 1782 block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table + 1783 block; 1784 offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1); 1785 1786 printf("Inode %d is part of block group %lu\n" 1787 "\tlocated at block %lu, offset 0x%04lx\n", ino, group, 1788 block_nr, offset); 1789 1790} 1791 1792void do_set_current_time(int argc, char *argv[]) 1793{ 1794 time_t now; 1795 1796 if (common_args_process(argc, argv, 2, 2, argv[0], 1797 "<time>", 0)) 1798 return; 1799 1800 now = string_to_time(argv[1]); 1801 if (now == ((time_t) -1)) { 1802 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n", 1803 argv[1]); 1804 return; 1805 1806 } else { 1807 printf("Setting current time to %s\n", time_to_string(now)); 1808 current_fs->now = now; 1809 } 1810} 1811 1812static int find_supp_feature(__u32 *supp, int feature_type, char *name) 1813{ 1814 int compat, bit, ret; 1815 unsigned int feature_mask; 1816 1817 if (name) { 1818 if (feature_type == E2P_FS_FEATURE) 1819 ret = e2p_string2feature(name, &compat, &feature_mask); 1820 else 1821 ret = e2p_jrnl_string2feature(name, &compat, 1822 &feature_mask); 1823 if (ret) 1824 return ret; 1825 1826 if (!(supp[compat] & feature_mask)) 1827 return 1; 1828 } else { 1829 for (compat = 0; compat < 3; compat++) { 1830 for (bit = 0, feature_mask = 1; bit < 32; 1831 bit++, feature_mask <<= 1) { 1832 if (supp[compat] & feature_mask) { 1833 if (feature_type == E2P_FS_FEATURE) 1834 fprintf(stdout, " %s", 1835 e2p_feature2string(compat, 1836 feature_mask)); 1837 else 1838 fprintf(stdout, " %s", 1839 e2p_jrnl_feature2string(compat, 1840 feature_mask)); 1841 } 1842 } 1843 } 1844 fprintf(stdout, "\n"); 1845 } 1846 1847 return 0; 1848} 1849 1850void do_supported_features(int argc, char *argv[]) 1851{ 1852 int i, j, ret; 1853 __u32 supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP, 1854 EXT2_LIB_FEATURE_INCOMPAT_SUPP, 1855 EXT2_LIB_FEATURE_RO_COMPAT_SUPP }; 1856 __u32 jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES, 1857 JFS_KNOWN_INCOMPAT_FEATURES, 1858 JFS_KNOWN_ROCOMPAT_FEATURES }; 1859 1860 if (argc > 1) { 1861 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]); 1862 if (ret) { 1863 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, 1864 argv[1]); 1865 } 1866 if (ret) 1867 com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]); 1868 else 1869 fprintf(stdout, "Supported feature: %s\n", argv[1]); 1870 } else { 1871 fprintf(stdout, "Supported features:"); 1872 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL); 1873 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL); 1874 } 1875} 1876 1877static int source_file(const char *cmd_file, int sci_idx) 1878{ 1879 FILE *f; 1880 char buf[256]; 1881 char *cp; 1882 int exit_status = 0; 1883 int retval; 1884 1885 if (strcmp(cmd_file, "-") == 0) 1886 f = stdin; 1887 else { 1888 f = fopen(cmd_file, "r"); 1889 if (!f) { 1890 perror(cmd_file); 1891 exit(1); 1892 } 1893 } 1894 fflush(stdout); 1895 fflush(stderr); 1896 setbuf(stdout, NULL); 1897 setbuf(stderr, NULL); 1898 while (!feof(f)) { 1899 if (fgets(buf, sizeof(buf), f) == NULL) 1900 break; 1901 cp = strchr(buf, '\n'); 1902 if (cp) 1903 *cp = 0; 1904 cp = strchr(buf, '\r'); 1905 if (cp) 1906 *cp = 0; 1907 printf("debugfs: %s\n", buf); 1908 retval = ss_execute_line(sci_idx, buf); 1909 if (retval) { 1910 ss_perror(sci_idx, retval, buf); 1911 exit_status++; 1912 } 1913 } 1914 return exit_status; 1915} 1916 1917int main(int argc, char **argv) 1918{ 1919 int retval; 1920 int sci_idx; 1921 const char *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]"; 1922 int c; 1923 int open_flags = EXT2_FLAG_SOFTSUPP_FEATURES; 1924 char *request = 0; 1925 int exit_status = 0; 1926 char *cmd_file = 0; 1927 blk_t superblock = 0; 1928 blk_t blocksize = 0; 1929 int catastrophic = 0; 1930 char *data_filename = 0; 1931 1932 if (debug_prog_name == 0) 1933 debug_prog_name = "debugfs"; 1934 1935 add_error_table(&et_ext2_error_table); 1936 fprintf (stderr, "%s %s (%s)\n", debug_prog_name, 1937 E2FSPROGS_VERSION, E2FSPROGS_DATE); 1938 1939 while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) { 1940 switch (c) { 1941 case 'R': 1942 request = optarg; 1943 break; 1944 case 'f': 1945 cmd_file = optarg; 1946 break; 1947 case 'd': 1948 data_filename = optarg; 1949 break; 1950 case 'i': 1951 open_flags |= EXT2_FLAG_IMAGE_FILE; 1952 break; 1953 case 'w': 1954 open_flags |= EXT2_FLAG_RW; 1955 break; 1956 case 'b': 1957 blocksize = parse_ulong(optarg, argv[0], 1958 "block size", 0); 1959 break; 1960 case 's': 1961 superblock = parse_ulong(optarg, argv[0], 1962 "superblock number", 0); 1963 break; 1964 case 'c': 1965 catastrophic = 1; 1966 break; 1967 case 'V': 1968 /* Print version number and exit */ 1969 fprintf(stderr, "\tUsing %s\n", 1970 error_message(EXT2_ET_BASE)); 1971 exit(0); 1972 default: 1973 com_err(argv[0], 0, usage, debug_prog_name); 1974 return 1; 1975 } 1976 } 1977 if (optind < argc) 1978 open_filesystem(argv[optind], open_flags, 1979 superblock, blocksize, catastrophic, 1980 data_filename); 1981 1982 sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL, 1983 &debug_cmds, &retval); 1984 if (retval) { 1985 ss_perror(sci_idx, retval, "creating invocation"); 1986 exit(1); 1987 } 1988 ss_get_readline(sci_idx); 1989 1990 (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval); 1991 if (retval) { 1992 ss_perror(sci_idx, retval, "adding standard requests"); 1993 exit (1); 1994 } 1995 if (extra_cmds) 1996 ss_add_request_table (sci_idx, extra_cmds, 1, &retval); 1997 if (retval) { 1998 ss_perror(sci_idx, retval, "adding extra requests"); 1999 exit (1); 2000 } 2001 if (request) { 2002 retval = 0; 2003 retval = ss_execute_line(sci_idx, request); 2004 if (retval) { 2005 ss_perror(sci_idx, retval, request); 2006 exit_status++; 2007 } 2008 } else if (cmd_file) { 2009 exit_status = source_file(cmd_file, sci_idx); 2010 } else { 2011 ss_listen(sci_idx); 2012 } 2013 2014 if (current_fs) 2015 close_filesystem(); 2016 2017 remove_error_table(&et_ext2_error_table); 2018 return exit_status; 2019} 2020