debugfs/debugfs.c

   1 /*
   2  * debugfs.c --- a program which allows you to attach an ext2fs
   3  * filesystem and play with it.
   4  *
   5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
   6  * under the terms of the GNU Public License.
   7  *
   8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
   9  */
  10
  11 #include "config.h"
  12 #include <stdio.h>
  13 #include <unistd.h>
  14 #include <stdlib.h>
  15 #include <ctype.h>
  16 #include <string.h>
  17 #include <time.h>
  18 #include <libgen.h>
  19 #ifdef HAVE_GETOPT_H
  20 #include <getopt.h>
  21 #else
  22 extern int optind;
  23 extern char *optarg;
  24 #endif
  25 #ifdef HAVE_ERRNO_H
  26 #include <errno.h>
  27 #endif
  28 #include <fcntl.h>
  29 #ifdef HAVE_SYS_SYSMACROS_H
  30 #include <sys/sysmacros.h>
  31 #endif
  32
  33 #include "debugfs.h"
  34 #include "uuid/uuid.h"
  35 #include "e2p/e2p.h"
  36
  37 #include <ext2fs/ext2_ext_attr.h>
  38
  39 #include "../version.h"
  40 #include "jfs_user.h"
  41 #include "support/plausible.h"
  42
  43 #ifndef BUFSIZ
  44 #define BUFSIZ 8192
  45 #endif
  46
  47 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
  48 int journal_enable_debug = -1;
  49 #endif
  50
  51 ss_request_table *extra_cmds;
  52 const char *debug_prog_name;
  53 int sci_idx;
  54
  55 ext2_filsys     current_fs;
  56 quota_ctx_t     current_qctx;
  57 ext2_ino_t      root, cwd;
  58
  59 static int debugfs_setup_tdb(const char *device_name, char *undo_file,
  60                              io_manager *io_ptr)
  61 {
  62         errcode_t retval = ENOMEM;
  63         char *tdb_dir = NULL, *tdb_file = NULL;
  64         char *dev_name, *tmp_name;
  65
  66         /* (re)open a specific undo file */
  67         if (undo_file && undo_file[0] != 0) {
  68                 retval = set_undo_io_backing_manager(*io_ptr);
  69                 if (retval)
  70                         goto err;
  71                 *io_ptr = undo_io_manager;
  72                 retval = set_undo_io_backup_file(undo_file);
  73                 if (retval)
  74                         goto err;
  75                 printf("Overwriting existing filesystem; this can be undone "
  76                         "using the command:\n"
  77                         "    e2undo %s %s\n\n",
  78                         undo_file, device_name);
  79                 return retval;
  80         }
  81
  82         /*
  83          * Configuration via a conf file would be
  84          * nice
  85          */
  86         tdb_dir = ss_safe_getenv("E2FSPROGS_UNDO_DIR");
  87         if (!tdb_dir)
  88                 tdb_dir = "/var/lib/e2fsprogs";
  89
  90         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
  91             access(tdb_dir, W_OK))
  92                 return 0;
  93
  94         tmp_name = strdup(device_name);
  95         if (!tmp_name)
  96                 goto errout;
  97         dev_name = basename(tmp_name);
  98         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
  99         if (!tdb_file) {
 100                 free(tmp_name);
 101                 goto errout;
 102         }
 103         sprintf(tdb_file, "%s/debugfs-%s.e2undo", tdb_dir, dev_name);
 104         free(tmp_name);
 105
 106         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
 107                 retval = errno;
 108                 com_err("debugfs", retval,
 109                         "while trying to delete %s", tdb_file);
 110                 goto errout;
 111         }
 112
 113         retval = set_undo_io_backing_manager(*io_ptr);
 114         if (retval)
 115                 goto errout;
 116         *io_ptr = undo_io_manager;
 117         retval = set_undo_io_backup_file(tdb_file);
 118         if (retval)
 119                 goto errout;
 120         printf("Overwriting existing filesystem; this can be undone "
 121                 "using the command:\n"
 122                 "    e2undo %s %s\n\n", tdb_file, device_name);
 123
 124         free(tdb_file);
 125         return 0;
 126 errout:
 127         free(tdb_file);
 128 err:
 129         com_err("debugfs", retval, "while trying to setup undo file\n");
 130         return retval;
 131 }
 132
 133 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
 134                             blk64_t blocksize, int catastrophic,
 135                             char *data_filename, char *undo_file)
 136 {
 137         int     retval;
 138         io_channel data_io = 0;
 139         io_manager io_ptr = unix_io_manager;
 140
 141         if (superblock != 0 && blocksize == 0) {
 142                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
 143                 current_fs = NULL;
 144                 return;
 145         }
 146
 147         if (data_filename) {
 148                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
 149                         com_err(device, 0,
 150                                 "The -d option is only valid when reading an e2image file");
 151                         current_fs = NULL;
 152                         return;
 153                 }
 154                 retval = unix_io_manager->open(data_filename, 0, &data_io);
 155                 if (retval) {
 156                         com_err(data_filename, 0, "while opening data source");
 157                         current_fs = NULL;
 158                         return;
 159                 }
 160         }
 161
 162         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
 163                 com_err(device, 0,
 164                         "opening read-only because of catastrophic mode");
 165                 open_flags &= ~EXT2_FLAG_RW;
 166         }
 167         if (catastrophic)
 168                 open_flags |= EXT2_FLAG_SKIP_MMP;
 169
 170         if (undo_file) {
 171                 retval = debugfs_setup_tdb(device, undo_file, &io_ptr);
 172                 if (retval)
 173                         exit(1);
 174         }
 175
 176 try_open_again:
 177         retval = ext2fs_open(device, open_flags, superblock, blocksize,
 178                              io_ptr, &current_fs);
 179         if (retval && !(open_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 180                 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 181                 printf("Checksum errors in superblock!  Retrying...\n");
 182                 goto try_open_again;
 183         }
 184         if (retval) {
 185                 com_err(device, retval, "while opening filesystem");
 186                 if (retval == EXT2_ET_BAD_MAGIC)
 187                         check_plausibility(device, CHECK_FS_EXIST, NULL);
 188                 current_fs = NULL;
 189                 return;
 190         }
 191         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 192
 193         if (catastrophic)
 194                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 195         else {
 196                 retval = ext2fs_read_inode_bitmap(current_fs);
 197                 if (retval) {
 198                         com_err(device, retval, "while reading inode bitmap");
 199                         goto errout;
 200                 }
 201                 retval = ext2fs_read_block_bitmap(current_fs);
 202                 if (retval) {
 203                         com_err(device, retval, "while reading block bitmap");
 204                         goto errout;
 205                 }
 206         }
 207
 208         if (data_io) {
 209                 retval = ext2fs_set_data_io(current_fs, data_io);
 210                 if (retval) {
 211                         com_err(device, retval,
 212                                 "while setting data source");
 213                         goto errout;
 214                 }
 215         }
 216
 217         root = cwd = EXT2_ROOT_INO;
 218         return;
 219
 220 errout:
 221         retval = ext2fs_close_free(&current_fs);
 222         if (retval)
 223                 com_err(device, retval, "while trying to close filesystem");
 224 }
 225
 226 void do_open_filesys(int argc, char **argv)
 227 {
 228         int     c, err;
 229         int     catastrophic = 0;
 230         blk64_t superblock = 0;
 231         blk64_t blocksize = 0;
 232         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 233         char    *data_filename = 0;
 234         char    *undo_file = NULL;
 235
 236         reset_getopt();
 237         while ((c = getopt(argc, argv, "iwfecb:s:d:Dz:")) != EOF) {
 238                 switch (c) {
 239                 case 'i':
 240                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 241                         break;
 242                 case 'w':
 243 #ifdef READ_ONLY
 244                         goto print_usage;
 245 #else
 246                         open_flags |= EXT2_FLAG_RW;
 247 #endif /* READ_ONLY */
 248                         break;
 249                 case 'f':
 250                         open_flags |= EXT2_FLAG_FORCE;
 251                         break;
 252                 case 'e':
 253                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 254                         break;
 255                 case 'c':
 256                         catastrophic = 1;
 257                         break;
 258                 case 'd':
 259                         data_filename = optarg;
 260                         break;
 261                 case 'D':
 262                         open_flags |= EXT2_FLAG_DIRECT_IO;
 263                         break;
 264                 case 'b':
 265                         blocksize = parse_ulong(optarg, argv[0],
 266                                                 "block size", &err);
 267                         if (err)
 268                                 return;
 269                         break;
 270                 case 's':
 271                         err = strtoblk(argv[0], optarg,
 272                                        "superblock block number", &superblock);
 273                         if (err)
 274                                 return;
 275                         break;
 276                 case 'z':
 277                         undo_file = optarg;
 278                         break;
 279                 default:
 280                         goto print_usage;
 281                 }
 282         }
 283         if (optind != argc-1) {
 284                 goto print_usage;
 285         }
 286         if (check_fs_not_open(argv[0]))
 287                 return;
 288         open_filesystem(argv[optind], open_flags,
 289                         superblock, blocksize, catastrophic,
 290                         data_filename, undo_file);
 291         return;
 292
 293 print_usage:
 294         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 295                 "[-d image_filename] [-z undo_file] [-c] [-i] [-f] [-e] [-D] "
 296 #ifndef READ_ONLY
 297                 "[-w] "
 298 #endif
 299                 "<device>\n", argv[0]);
 300 }
 301
 302 void do_lcd(int argc, char **argv)
 303 {
 304         if (argc != 2) {
 305                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 306                 return;
 307         }
 308
 309         if (chdir(argv[1]) == -1) {
 310                 com_err(argv[0], errno,
 311                         "while trying to change native directory to %s",
 312                         argv[1]);
 313                 return;
 314         }
 315 }
 316
 317 static void close_filesystem(NOARGS)
 318 {
 319         int     retval;
 320
 321         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 322                 retval = ext2fs_write_inode_bitmap(current_fs);
 323                 if (retval)
 324                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 325         }
 326         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 327                 retval = ext2fs_write_block_bitmap(current_fs);
 328                 if (retval)
 329                         com_err("ext2fs_write_block_bitmap", retval, 0);
 330         }
 331         if (current_qctx)
 332                 quota_release_context(&current_qctx);
 333         retval = ext2fs_close_free(&current_fs);
 334         if (retval)
 335                 com_err("ext2fs_close", retval, 0);
 336         return;
 337 }
 338
 339 void do_close_filesys(int argc, char **argv)
 340 {
 341         int     c;
 342
 343         if (check_fs_open(argv[0]))
 344                 return;
 345
 346         reset_getopt();
 347         while ((c = getopt (argc, argv, "a")) != EOF) {
 348                 switch (c) {
 349                 case 'a':
 350                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 351                         break;
 352                 default:
 353                         goto print_usage;
 354                 }
 355         }
 356
 357         if (argc > optind) {
 358         print_usage:
 359                 com_err(0, 0, "Usage: close_filesys [-a]");
 360                 return;
 361         }
 362
 363         close_filesystem();
 364 }
 365
 366 #ifndef READ_ONLY
 367 void do_init_filesys(int argc, char **argv)
 368 {
 369         struct ext2_super_block param;
 370         errcode_t       retval;
 371         int             err;
 372         blk64_t         blocks;
 373
 374         if (common_args_process(argc, argv, 3, 3, "initialize",
 375                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 376                 return;
 377
 378         memset(&param, 0, sizeof(struct ext2_super_block));
 379         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 380         if (err)
 381                 return;
 382         ext2fs_blocks_count_set(&param, blocks);
 383         retval = ext2fs_initialize(argv[1], 0, &param,
 384                                    unix_io_manager, &current_fs);
 385         if (retval) {
 386                 com_err(argv[1], retval, "while initializing filesystem");
 387                 current_fs = NULL;
 388                 return;
 389         }
 390         root = cwd = EXT2_ROOT_INO;
 391         return;
 392 }
 393
 394 static void print_features(struct ext2_super_block * s, FILE *f)
 395 {
 396         int     i, j, printed=0;
 397         __u32   *mask = &s->s_feature_compat, m;
 398
 399         fputs("Filesystem features:", f);
 400         for (i=0; i <3; i++,mask++) {
 401                 for (j=0,m=1; j < 32; j++, m<<=1) {
 402                         if (*mask & m) {
 403                                 fprintf(f, " %s", e2p_feature2string(i, m));
 404                                 printed++;
 405                         }
 406                 }
 407         }
 408         if (printed == 0)
 409                 fputs("(none)", f);
 410         fputs("\n", f);
 411 }
 412 #endif /* READ_ONLY */
 413
 414 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 415                           const char *str, int *first, FILE *f)
 416 {
 417         if (ext2fs_bg_flags_test(fs, group, mask)) {
 418                 if (*first) {
 419                         fputs("           [", f);
 420                         *first = 0;
 421                 } else
 422                         fputs(", ", f);
 423                 fputs(str, f);
 424         }
 425 }
 426
 427 void do_show_super_stats(int argc, char *argv[])
 428 {
 429         const char *units ="block";
 430         dgrp_t  i;
 431         FILE    *out;
 432         int     c, header_only = 0;
 433         int     numdirs = 0, first, gdt_csum;
 434
 435         reset_getopt();
 436         while ((c = getopt (argc, argv, "h")) != EOF) {
 437                 switch (c) {
 438                 case 'h':
 439                         header_only++;
 440                         break;
 441                 default:
 442                         goto print_usage;
 443                 }
 444         }
 445         if (optind != argc) {
 446                 goto print_usage;
 447         }
 448         if (check_fs_open(argv[0]))
 449                 return;
 450         out = open_pager();
 451
 452         if (ext2fs_has_feature_bigalloc(current_fs->super))
 453                 units = "cluster";
 454
 455         list_super2(current_fs->super, out);
 456         if (ext2fs_has_feature_metadata_csum(current_fs->super) &&
 457             !ext2fs_superblock_csum_verify(current_fs,
 458                                            current_fs->super)) {
 459                 __u32 orig_csum = current_fs->super->s_checksum;
 460
 461                 ext2fs_superblock_csum_set(current_fs,
 462                                            current_fs->super);
 463                 fprintf(out, "Expected Checksum:        0x%08x\n",
 464                         current_fs->super->s_checksum);
 465                 current_fs->super->s_checksum = orig_csum;
 466         }
 467         for (i=0; i < current_fs->group_desc_count; i++)
 468                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 469         fprintf(out, "Directories:              %d\n", numdirs);
 470
 471         if (header_only) {
 472                 close_pager(out);
 473                 return;
 474         }
 475
 476         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 477         for (i = 0; i < current_fs->group_desc_count; i++) {
 478                 fprintf(out, " Group %2d: block bitmap at %llu, "
 479                         "inode bitmap at %llu, "
 480                         "inode table at %llu\n"
 481                         "           %u free %s%s, "
 482                         "%u free %s, "
 483                         "%u used %s%s",
 484                         i, ext2fs_block_bitmap_loc(current_fs, i),
 485                         ext2fs_inode_bitmap_loc(current_fs, i),
 486                         ext2fs_inode_table_loc(current_fs, i),
 487                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 488                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 489                         "s" : "",
 490                         ext2fs_bg_free_inodes_count(current_fs, i),
 491                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 492                         "inodes" : "inode",
 493                         ext2fs_bg_used_dirs_count(current_fs, i),
 494                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 495                                 : "directory", gdt_csum ? ", " : "\n");
 496                 if (gdt_csum)
 497                         fprintf(out, "%u unused %s\n",
 498                                 ext2fs_bg_itable_unused(current_fs, i),
 499                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 500                                 "inodes" : "inode");
 501                 first = 1;
 502                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 503                               &first, out);
 504                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 505                               &first, out);
 506                 if (gdt_csum) {
 507                         fprintf(out, "%sChecksum 0x%04x",
 508                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 509                         first = 0;
 510                 }
 511                 if (!first)
 512                         fputs("]\n", out);
 513         }
 514         close_pager(out);
 515         return;
 516 print_usage:
 517         fprintf(stderr, "%s: Usage: show_super_stats [-h]\n", argv[0]);
 518 }
 519
 520 #ifndef READ_ONLY
 521 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 522                       char **argv EXT2FS_ATTR((unused)))
 523 {
 524         if (check_fs_open(argv[0]))
 525                 return;
 526         if (check_fs_read_write(argv[0]))
 527                 return;
 528
 529         if (argv[1] && !strcmp(argv[1], "-clean"))
 530                 current_fs->super->s_state |= EXT2_VALID_FS;
 531         else
 532                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 533         ext2fs_mark_super_dirty(current_fs);
 534 }
 535 #endif /* READ_ONLY */
 536
 537 struct list_blocks_struct {
 538         FILE            *f;
 539         e2_blkcnt_t     total;
 540         blk64_t         first_block, last_block;
 541         e2_blkcnt_t     first_bcnt, last_bcnt;
 542         e2_blkcnt_t     first;
 543 };
 544
 545 static void finish_range(struct list_blocks_struct *lb)
 546 {
 547         if (lb->first_block == 0)
 548                 return;
 549         if (lb->first)
 550                 lb->first = 0;
 551         else
 552                 fprintf(lb->f, ", ");
 553         if (lb->first_block == lb->last_block)
 554                 fprintf(lb->f, "(%lld):%llu",
 555                         (long long)lb->first_bcnt, lb->first_block);
 556         else
 557                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 558                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 559                         lb->first_block, lb->last_block);
 560         lb->first_block = 0;
 561 }
 562
 563 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 564                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 565                             blk64_t ref_block EXT2FS_ATTR((unused)),
 566                             int ref_offset EXT2FS_ATTR((unused)),
 567                             void *private)
 568 {
 569         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 570
 571         lb->total++;
 572         if (blockcnt >= 0) {
 573                 /*
 574                  * See if we can add on to the existing range (if it exists)
 575                  */
 576                 if (lb->first_block &&
 577                     (lb->last_block+1 == *blocknr) &&
 578                     (lb->last_bcnt+1 == blockcnt)) {
 579                         lb->last_block = *blocknr;
 580                         lb->last_bcnt = blockcnt;
 581                         return 0;
 582                 }
 583                 /*
 584                  * Start a new range.
 585                  */
 586                 finish_range(lb);
 587                 lb->first_block = lb->last_block = *blocknr;
 588                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 589                 return 0;
 590         }
 591         /*
 592          * Not a normal block.  Always force a new range.
 593          */
 594         finish_range(lb);
 595         if (lb->first)
 596                 lb->first = 0;
 597         else
 598                 fprintf(lb->f, ", ");
 599         if (blockcnt == -1)
 600                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 601         else if (blockcnt == -2)
 602                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 603         else if (blockcnt == -3)
 604                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 605         return 0;
 606 }
 607
 608 static void internal_dump_inode_extra(FILE *out,
 609                                       const char *prefix EXT2FS_ATTR((unused)),
 610                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 611                                       struct ext2_inode_large *inode)
 612 {
 613         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 614         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 615                         EXT2_GOOD_OLD_INODE_SIZE) {
 616                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 617                                 inode->i_extra_isize);
 618                 return;
 619         }
 620 }
 621
 622 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 623 {
 624         struct list_blocks_struct lb;
 625
 626         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 627         lb.total = 0;
 628         lb.first_block = 0;
 629         lb.f = f;
 630         lb.first = 1;
 631         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 632                               list_blocks_proc, (void *)&lb);
 633         finish_range(&lb);
 634         if (lb.total)
 635                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 636         fprintf(f,"\n");
 637 }
 638
 639 static int int_log10(unsigned long long arg)
 640 {
 641         int     l = 0;
 642
 643         arg = arg / 10;
 644         while (arg) {
 645                 l++;
 646                 arg = arg / 10;
 647         }
 648         return l;
 649 }
 650
 651 #define DUMP_LEAF_EXTENTS       0x01
 652 #define DUMP_NODE_EXTENTS       0x02
 653 #define DUMP_EXTENT_TABLE       0x04
 654
 655 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 656                          int flags, int logical_width, int physical_width)
 657 {
 658         ext2_extent_handle_t    handle;
 659         struct ext2fs_extent    extent;
 660         struct ext2_extent_info info;
 661         int                     op = EXT2_EXTENT_ROOT;
 662         unsigned int            printed = 0;
 663         errcode_t               errcode;
 664
 665         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 666         if (errcode)
 667                 return;
 668
 669         if (flags & DUMP_EXTENT_TABLE)
 670                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 671                         (logical_width*2)+3, "Logical",
 672                         (physical_width*2)+3, "Physical");
 673         else
 674                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 675
 676         while (1) {
 677                 errcode = ext2fs_extent_get(handle, op, &extent);
 678
 679                 if (errcode)
 680                         break;
 681
 682                 op = EXT2_EXTENT_NEXT;
 683
 684                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 685                         continue;
 686
 687                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 688                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 689                                 continue;
 690                 } else {
 691                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 692                                 continue;
 693                 }
 694
 695                 errcode = ext2fs_extent_get_info(handle, &info);
 696                 if (errcode)
 697                         continue;
 698
 699                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 700                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 701                                 continue;
 702
 703                         if (flags & DUMP_EXTENT_TABLE) {
 704                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 705                                         "%*llu%*s %6u\n",
 706                                         info.curr_level, info.max_depth,
 707                                         info.curr_entry, info.num_entries,
 708                                         logical_width,
 709                                         extent.e_lblk,
 710                                         logical_width,
 711                                         extent.e_lblk + (extent.e_len - 1),
 712                                         physical_width,
 713                                         extent.e_pblk,
 714                                         physical_width+3, "", extent.e_len);
 715                                 continue;
 716                         }
 717
 718                         fprintf(f, "%s(ETB%d):%lld",
 719                                 printed ? ", " : "", info.curr_level,
 720                                 extent.e_pblk);
 721                         printed = 1;
 722                         continue;
 723                 }
 724
 725                 if (flags & DUMP_EXTENT_TABLE) {
 726                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 727                                 "%*llu - %*llu %6u %s\n",
 728                                 info.curr_level, info.max_depth,
 729                                 info.curr_entry, info.num_entries,
 730                                 logical_width,
 731                                 extent.e_lblk,
 732                                 logical_width,
 733                                 extent.e_lblk + (extent.e_len - 1),
 734                                 physical_width,
 735                                 extent.e_pblk,
 736                                 physical_width,
 737                                 extent.e_pblk + (extent.e_len - 1),
 738                                 extent.e_len,
 739                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 740                                         "Uninit" : "");
 741                         continue;
 742                 }
 743
 744                 if (extent.e_len == 0)
 745                         continue;
 746                 else if (extent.e_len == 1)
 747                         fprintf(f,
 748                                 "%s(%lld%s):%lld",
 749                                 printed ? ", " : "",
 750                                 extent.e_lblk,
 751                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 752                                 "[u]" : "",
 753                                 extent.e_pblk);
 754                 else
 755                         fprintf(f,
 756                                 "%s(%lld-%lld%s):%lld-%lld",
 757                                 printed ? ", " : "",
 758                                 extent.e_lblk,
 759                                 extent.e_lblk + (extent.e_len - 1),
 760                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 761                                         "[u]" : "",
 762                                 extent.e_pblk,
 763                                 extent.e_pblk + (extent.e_len - 1));
 764                 printed = 1;
 765         }
 766         if (printed)
 767                 fprintf(f, "\n");
 768         ext2fs_extent_free(handle);
 769 }
 770
 771 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 772 {
 773         errcode_t retval;
 774         size_t size;
 775
 776         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 777         if (!retval)
 778                 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
 779 }
 780
 781 static void dump_inline_symlink(FILE *out, ext2_ino_t inode_num,
 782                                 struct ext2_inode *inode, const char *prefix)
 783 {
 784         errcode_t retval;
 785         char *buf = NULL;
 786         size_t size;
 787
 788         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 789         if (retval)
 790                 goto out;
 791
 792         retval = ext2fs_get_memzero(size + 1, &buf);
 793         if (retval)
 794                 goto out;
 795
 796         retval = ext2fs_inline_data_get(current_fs, inode_num,
 797                                         inode, buf, &size);
 798         if (retval)
 799                 goto out;
 800
 801         fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 802                 (int)size, buf);
 803 out:
 804         if (buf)
 805                 ext2fs_free_mem(&buf);
 806         if (retval)
 807                 com_err(__func__, retval, "while dumping link destination");
 808 }
 809
 810 void internal_dump_inode(FILE *out, const char *prefix,
 811                          ext2_ino_t inode_num, struct ext2_inode *inode,
 812                          int do_dump_blocks)
 813 {
 814         const char *i_type;
 815         char frag, fsize;
 816         int os = current_fs->super->s_creator_os;
 817         struct ext2_inode_large *large_inode;
 818         int is_large_inode = 0;
 819
 820         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 821                 is_large_inode = 1;
 822         large_inode = (struct ext2_inode_large *) inode;
 823
 824         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 825         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 826         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 827         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 828         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 829         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 830         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 831         else i_type = "bad type";
 832         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 833         fprintf(out, "%sMode:  0%03o   Flags: 0x%x\n",
 834                 prefix, inode->i_mode & 07777, inode->i_flags);
 835         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 836                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 837                         prefix, inode->i_generation, large_inode->i_version_hi,
 838                         inode->osd1.linux1.l_i_version);
 839         } else {
 840                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 841                         inode->i_generation, inode->osd1.linux1.l_i_version);
 842         }
 843         fprintf(out, "%sUser: %5d   Group: %5d",
 844                 prefix, inode_uid(*inode), inode_gid(*inode));
 845         if (is_large_inode && large_inode->i_extra_isize >= 32)
 846                 fprintf(out, "   Project: %5d", large_inode->i_projid);
 847         fputs("   Size: ", out);
 848         if (LINUX_S_ISREG(inode->i_mode))
 849                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 850         else
 851                 fprintf(out, "%d\n", inode->i_size);
 852         if (os == EXT2_OS_HURD)
 853                 fprintf(out,
 854                         "%sFile ACL: %d Translator: %d\n",
 855                         prefix,
 856                         inode->i_file_acl,
 857                         inode->osd1.hurd1.h_i_translator);
 858         else
 859                 fprintf(out, "%sFile ACL: %llu\n",
 860                         prefix,
 861                         inode->i_file_acl | ((long long)
 862                                 (inode->osd2.linux2.l_i_file_acl_high) << 32));
 863         if (os != EXT2_OS_HURD)
 864                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 865                         prefix, inode->i_links_count,
 866                         (((unsigned long long)
 867                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 868                         inode->i_blocks);
 869         else
 870                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 871                         prefix, inode->i_links_count, inode->i_blocks);
 872         switch (os) {
 873             case EXT2_OS_HURD:
 874                 frag = inode->osd2.hurd2.h_i_frag;
 875                 fsize = inode->osd2.hurd2.h_i_fsize;
 876                 break;
 877             default:
 878                 frag = fsize = 0;
 879         }
 880         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 881                 prefix, inode->i_faddr, frag, fsize);
 882         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 883                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 884                         inode->i_ctime, large_inode->i_ctime_extra,
 885                         inode_time_to_string(inode->i_ctime,
 886                                              large_inode->i_ctime_extra));
 887                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 888                         inode->i_atime, large_inode->i_atime_extra,
 889                         inode_time_to_string(inode->i_atime,
 890                                              large_inode->i_atime_extra));
 891                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 892                         inode->i_mtime, large_inode->i_mtime_extra,
 893                         inode_time_to_string(inode->i_mtime,
 894                                              large_inode->i_mtime_extra));
 895                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 896                         large_inode->i_crtime, large_inode->i_crtime_extra,
 897                         inode_time_to_string(large_inode->i_crtime,
 898                                              large_inode->i_crtime_extra));
 899                 if (inode->i_dtime)
 900                         fprintf(out, "%s dtime: 0x%08x:(%08x) -- %s", prefix,
 901                                 large_inode->i_dtime, large_inode->i_ctime_extra,
 902                                 inode_time_to_string(inode->i_dtime,
 903                                                      large_inode->i_ctime_extra));
 904         } else {
 905                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 906                         time_to_string((__s32) inode->i_ctime));
 907                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 908                         time_to_string((__s32) inode->i_atime));
 909                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 910                         time_to_string((__s32) inode->i_mtime));
 911                 if (inode->i_dtime)
 912                         fprintf(out, "%sdtime: 0x%08x -- %s", prefix,
 913                                 inode->i_dtime,
 914                                 time_to_string((__s32) inode->i_dtime));
 915         }
 916         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 917                 internal_dump_inode_extra(out, prefix, inode_num,
 918                                           (struct ext2_inode_large *) inode);
 919         dump_inode_attributes(out, inode_num);
 920         if (ext2fs_has_feature_metadata_csum(current_fs->super)) {
 921                 __u32 crc = inode->i_checksum_lo;
 922                 if (is_large_inode &&
 923                     large_inode->i_extra_isize >=
 924                                 (offsetof(struct ext2_inode_large,
 925                                           i_checksum_hi) -
 926                                  EXT2_GOOD_OLD_INODE_SIZE))
 927                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 928                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 929         }
 930
 931         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_is_fast_symlink(inode))
 932                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 933                         (int)EXT2_I_SIZE(inode), (char *)inode->i_block);
 934         else if (LINUX_S_ISLNK(inode->i_mode) &&
 935                    (inode->i_flags & EXT4_INLINE_DATA_FL))
 936                 dump_inline_symlink(out, inode_num, inode, prefix);
 937         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 938                 int major, minor;
 939                 const char *devnote;
 940
 941                 if (inode->i_block[0]) {
 942                         major = (inode->i_block[0] >> 8) & 255;
 943                         minor = inode->i_block[0] & 255;
 944                         devnote = "";
 945                 } else {
 946                         major = (inode->i_block[1] & 0xfff00) >> 8;
 947                         minor = ((inode->i_block[1] & 0xff) |
 948                                  ((inode->i_block[1] >> 12) & 0xfff00));
 949                         devnote = "(New-style) ";
 950                 }
 951                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 952                         devnote, major, minor, major, minor);
 953         } else if (do_dump_blocks) {
 954                 if (inode->i_flags & EXT4_EXTENTS_FL)
 955                         dump_extents(out, prefix, inode_num,
 956                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 957                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 958                         dump_inline_data(out, prefix, inode_num);
 959                 else
 960                         dump_blocks(out, prefix, inode_num);
 961         }
 962 }
 963
 964 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 965 {
 966         FILE    *out;
 967
 968         out = open_pager();
 969         internal_dump_inode(out, "", inode_num, inode, 1);
 970         close_pager(out);
 971 }
 972
 973 void do_stat(int argc, char *argv[])
 974 {
 975         ext2_ino_t      inode;
 976         struct ext2_inode * inode_buf;
 977
 978         if (check_fs_open(argv[0]))
 979                 return;
 980
 981         inode_buf = (struct ext2_inode *)
 982                         malloc(EXT2_INODE_SIZE(current_fs->super));
 983         if (!inode_buf) {
 984                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 985                 return;
 986         }
 987
 988         if (common_inode_args_process(argc, argv, &inode, 0)) {
 989                 free(inode_buf);
 990                 return;
 991         }
 992
 993         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 994                                         EXT2_INODE_SIZE(current_fs->super))) {
 995                 free(inode_buf);
 996                 return;
 997         }
 998
 999         dump_inode(inode, inode_buf);
1000         free(inode_buf);
1001         return;
1002 }
1003
1004 void do_dump_extents(int argc, char **argv)
1005 {
1006         struct ext2_inode inode;
1007         ext2_ino_t      ino;
1008         FILE            *out;
1009         int             c, flags = 0;
1010         int             logical_width;
1011         int             physical_width;
1012
1013         reset_getopt();
1014         while ((c = getopt(argc, argv, "nl")) != EOF) {
1015                 switch (c) {
1016                 case 'n':
1017                         flags |= DUMP_NODE_EXTENTS;
1018                         break;
1019                 case 'l':
1020                         flags |= DUMP_LEAF_EXTENTS;
1021                         break;
1022                 }
1023         }
1024
1025         if (argc != optind + 1) {
1026                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
1027                 return;
1028         }
1029
1030         if (flags == 0)
1031                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
1032         flags |= DUMP_EXTENT_TABLE;
1033
1034         if (check_fs_open(argv[0]))
1035                 return;
1036
1037         ino = string_to_inode(argv[optind]);
1038         if (ino == 0)
1039                 return;
1040
1041         if (debugfs_read_inode(ino, &inode, argv[0]))
1042                 return;
1043
1044         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
1045                 fprintf(stderr, "%s: does not uses extent block maps\n",
1046                         argv[optind]);
1047                 return;
1048         }
1049
1050         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
1051                                   current_fs->blocksize) + 1;
1052         if (logical_width < 5)
1053                 logical_width = 5;
1054         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
1055         if (physical_width < 5)
1056                 physical_width = 5;
1057
1058         out = open_pager();
1059         dump_extents(out, "", ino, flags, logical_width, physical_width);
1060         close_pager(out);
1061         return;
1062 }
1063
1064 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
1065                              blk64_t *blocknr,
1066                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1067                              blk64_t ref_block EXT2FS_ATTR((unused)),
1068                              int ref_offset EXT2FS_ATTR((unused)),
1069                              void *private EXT2FS_ATTR((unused)))
1070 {
1071         printf("%llu ", *blocknr);
1072         return 0;
1073 }
1074
1075 void do_blocks(int argc, char *argv[])
1076 {
1077         ext2_ino_t      inode;
1078
1079         if (check_fs_open(argv[0]))
1080                 return;
1081
1082         if (common_inode_args_process(argc, argv, &inode, 0)) {
1083                 return;
1084         }
1085
1086         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1087                               print_blocks_proc, NULL);
1088         fputc('\n', stdout);
1089         return;
1090 }
1091
1092 void do_chroot(int argc, char *argv[])
1093 {
1094         ext2_ino_t inode;
1095         int retval;
1096
1097         if (common_inode_args_process(argc, argv, &inode, 0))
1098                 return;
1099
1100         retval = ext2fs_check_directory(current_fs, inode);
1101         if (retval)  {
1102                 com_err(argv[1], retval, 0);
1103                 return;
1104         }
1105         root = inode;
1106 }
1107
1108 #ifndef READ_ONLY
1109 void do_clri(int argc, char *argv[])
1110 {
1111         ext2_ino_t inode;
1112         struct ext2_inode inode_buf;
1113
1114         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1115                 return;
1116
1117         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1118                 return;
1119         memset(&inode_buf, 0, sizeof(inode_buf));
1120         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1121                 return;
1122 }
1123
1124 void do_freei(int argc, char *argv[])
1125 {
1126         unsigned int    len = 1;
1127         int             err = 0;
1128         ext2_ino_t      inode;
1129
1130         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1131                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1132                 return;
1133         if (check_fs_read_write(argv[0]))
1134                 return;
1135
1136         inode = string_to_inode(argv[1]);
1137         if (!inode)
1138                 return;
1139
1140         if (argc == 3) {
1141                 len = parse_ulong(argv[2], argv[0], "length", &err);
1142                 if (err)
1143                         return;
1144         }
1145
1146         if (len == 1 &&
1147             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1148                 com_err(argv[0], 0, "Warning: inode already clear");
1149         while (len-- > 0)
1150                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1151         ext2fs_mark_ib_dirty(current_fs);
1152 }
1153
1154 void do_seti(int argc, char *argv[])
1155 {
1156         unsigned int    len = 1;
1157         int             err = 0;
1158         ext2_ino_t      inode;
1159
1160         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1161                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1162                 return;
1163         if (check_fs_read_write(argv[0]))
1164                 return;
1165
1166         inode = string_to_inode(argv[1]);
1167         if (!inode)
1168                 return;
1169
1170         if (argc == 3) {
1171                 len = parse_ulong(argv[2], argv[0], "length", &err);
1172                 if (err)
1173                         return;
1174         }
1175
1176         if ((len == 1) &&
1177             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1178                 com_err(argv[0], 0, "Warning: inode already set");
1179         while (len-- > 0)
1180                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1181         ext2fs_mark_ib_dirty(current_fs);
1182 }
1183 #endif /* READ_ONLY */
1184
1185 void do_testi(int argc, char *argv[])
1186 {
1187         ext2_ino_t inode;
1188
1189         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1190                 return;
1191
1192         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1193                 printf("Inode %u is marked in use\n", inode);
1194         else
1195                 printf("Inode %u is not in use\n", inode);
1196 }
1197
1198 #ifndef READ_ONLY
1199 void do_freeb(int argc, char *argv[])
1200 {
1201         blk64_t block;
1202         blk64_t count = 1;
1203
1204         if (common_block_args_process(argc, argv, &block, &count))
1205                 return;
1206         if (check_fs_read_write(argv[0]))
1207                 return;
1208         while (count-- > 0) {
1209                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1210                         com_err(argv[0], 0, "Warning: block %llu already clear",
1211                                 block);
1212                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1213                 block++;
1214         }
1215         ext2fs_mark_bb_dirty(current_fs);
1216 }
1217
1218 void do_setb(int argc, char *argv[])
1219 {
1220         blk64_t block;
1221         blk64_t count = 1;
1222
1223         if (common_block_args_process(argc, argv, &block, &count))
1224                 return;
1225         if (check_fs_read_write(argv[0]))
1226                 return;
1227         while (count-- > 0) {
1228                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1229                         com_err(argv[0], 0, "Warning: block %llu already set",
1230                                 block);
1231                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1232                 block++;
1233         }
1234         ext2fs_mark_bb_dirty(current_fs);
1235 }
1236 #endif /* READ_ONLY */
1237
1238 void do_testb(int argc, char *argv[])
1239 {
1240         blk64_t block;
1241         blk64_t count = 1;
1242
1243         if (common_block_args_process(argc, argv, &block, &count))
1244                 return;
1245         while (count-- > 0) {
1246                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1247                         printf("Block %llu marked in use\n", block);
1248                 else
1249                         printf("Block %llu not in use\n", block);
1250                 block++;
1251         }
1252 }
1253
1254 #ifndef READ_ONLY
1255 static void modify_u8(char *com, const char *prompt,
1256                       const char *format, __u8 *val)
1257 {
1258         char buf[200];
1259         unsigned long v;
1260         char *tmp;
1261
1262         sprintf(buf, format, *val);
1263         printf("%30s    [%s] ", prompt, buf);
1264         if (!fgets(buf, sizeof(buf), stdin))
1265                 return;
1266         if (buf[strlen (buf) - 1] == '\n')
1267                 buf[strlen (buf) - 1] = '\0';
1268         if (!buf[0])
1269                 return;
1270         v = strtoul(buf, &tmp, 0);
1271         if (*tmp)
1272                 com_err(com, 0, "Bad value - %s", buf);
1273         else
1274                 *val = v;
1275 }
1276
1277 static void modify_u16(char *com, const char *prompt,
1278                        const char *format, __u16 *val)
1279 {
1280         char buf[200];
1281         unsigned long v;
1282         char *tmp;
1283
1284         sprintf(buf, format, *val);
1285         printf("%30s    [%s] ", prompt, buf);
1286         if (!fgets(buf, sizeof(buf), stdin))
1287                 return;
1288         if (buf[strlen (buf) - 1] == '\n')
1289                 buf[strlen (buf) - 1] = '\0';
1290         if (!buf[0])
1291                 return;
1292         v = strtoul(buf, &tmp, 0);
1293         if (*tmp)
1294                 com_err(com, 0, "Bad value - %s", buf);
1295         else
1296                 *val = v;
1297 }
1298
1299 static void modify_u32(char *com, const char *prompt,
1300                        const char *format, __u32 *val)
1301 {
1302         char buf[200];
1303         unsigned long v;
1304         char *tmp;
1305
1306         sprintf(buf, format, *val);
1307         printf("%30s    [%s] ", prompt, buf);
1308         if (!fgets(buf, sizeof(buf), stdin))
1309                 return;
1310         if (buf[strlen (buf) - 1] == '\n')
1311                 buf[strlen (buf) - 1] = '\0';
1312         if (!buf[0])
1313                 return;
1314         v = strtoul(buf, &tmp, 0);
1315         if (*tmp)
1316                 com_err(com, 0, "Bad value - %s", buf);
1317         else
1318                 *val = v;
1319 }
1320
1321
1322 void do_modify_inode(int argc, char *argv[])
1323 {
1324         struct ext2_inode inode;
1325         ext2_ino_t      inode_num;
1326         int             i;
1327         unsigned char   *frag, *fsize;
1328         char            buf[80];
1329         int             os;
1330         const char      *hex_format = "0x%x";
1331         const char      *octal_format = "0%o";
1332         const char      *decimal_format = "%d";
1333         const char      *unsignedlong_format = "%lu";
1334
1335         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1336                 return;
1337
1338         os = current_fs->super->s_creator_os;
1339
1340         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1341                 return;
1342
1343         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1344         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1345         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1346         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1347         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1348         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1349         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1350         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1351         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1352         if (os == EXT2_OS_LINUX)
1353                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1354                            &inode.osd2.linux2.l_i_blocks_hi);
1355         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1356         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1357         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1358 #if 0
1359         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1360 #endif
1361         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1362
1363         modify_u32(argv[0], "High 32bits of size", decimal_format,
1364                    &inode.i_size_high);
1365
1366         if (os == EXT2_OS_HURD)
1367                 modify_u32(argv[0], "Translator Block",
1368                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1369
1370         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1371         switch (os) {
1372             case EXT2_OS_HURD:
1373                 frag = &inode.osd2.hurd2.h_i_frag;
1374                 fsize = &inode.osd2.hurd2.h_i_fsize;
1375                 break;
1376             default:
1377                 frag = fsize = 0;
1378         }
1379         if (frag)
1380                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1381         if (fsize)
1382                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1383
1384         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1385                 sprintf(buf, "Direct Block #%d", i);
1386                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1387         }
1388         modify_u32(argv[0], "Indirect Block", decimal_format,
1389                     &inode.i_block[EXT2_IND_BLOCK]);
1390         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1391                     &inode.i_block[EXT2_DIND_BLOCK]);
1392         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1393                     &inode.i_block[EXT2_TIND_BLOCK]);
1394         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1395                 return;
1396 }
1397 #endif /* READ_ONLY */
1398
1399 void do_change_working_dir(int argc, char *argv[])
1400 {
1401         ext2_ino_t      inode;
1402         int             retval;
1403
1404         if (common_inode_args_process(argc, argv, &inode, 0))
1405                 return;
1406
1407         retval = ext2fs_check_directory(current_fs, inode);
1408         if (retval) {
1409                 com_err(argv[1], retval, 0);
1410                 return;
1411         }
1412         cwd = inode;
1413         return;
1414 }
1415
1416 void do_print_working_directory(int argc, char *argv[])
1417 {
1418         int     retval;
1419         char    *pathname = NULL;
1420
1421         if (common_args_process(argc, argv, 1, 1,
1422                                 "print_working_directory", "", 0))
1423                 return;
1424
1425         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1426         if (retval) {
1427                 com_err(argv[0], retval,
1428                         "while trying to get pathname of cwd");
1429         }
1430         printf("[pwd]   INODE: %6u  PATH: %s\n",
1431                cwd, pathname ? pathname : "NULL");
1432         if (pathname) {
1433                 free(pathname);
1434                 pathname = NULL;
1435         }
1436         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1437         if (retval) {
1438                 com_err(argv[0], retval,
1439                         "while trying to get pathname of root");
1440         }
1441         printf("[root]  INODE: %6u  PATH: %s\n",
1442                root, pathname ? pathname : "NULL");
1443         if (pathname) {
1444                 free(pathname);
1445                 pathname = NULL;
1446         }
1447         return;
1448 }
1449
1450 #ifndef READ_ONLY
1451 static void make_link(char *sourcename, char *destname)
1452 {
1453         ext2_ino_t      ino;
1454         struct ext2_inode inode;
1455         int             retval;
1456         ext2_ino_t      dir;
1457         char            *dest, *cp, *base_name;
1458
1459         /*
1460          * Get the source inode
1461          */
1462         ino = string_to_inode(sourcename);
1463         if (!ino)
1464                 return;
1465         base_name = strrchr(sourcename, '/');
1466         if (base_name)
1467                 base_name++;
1468         else
1469                 base_name = sourcename;
1470         /*
1471          * Figure out the destination.  First see if it exists and is
1472          * a directory.
1473          */
1474         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1475                 dest = base_name;
1476         else {
1477                 /*
1478                  * OK, it doesn't exist.  See if it is
1479                  * '<dir>/basename' or 'basename'
1480                  */
1481                 cp = strrchr(destname, '/');
1482                 if (cp) {
1483                         *cp = 0;
1484                         dir = string_to_inode(destname);
1485                         if (!dir)
1486                                 return;
1487                         dest = cp+1;
1488                 } else {
1489                         dir = cwd;
1490                         dest = destname;
1491                 }
1492         }
1493
1494         if (debugfs_read_inode(ino, &inode, sourcename))
1495                 return;
1496
1497         retval = ext2fs_link(current_fs, dir, dest, ino,
1498                              ext2_file_type(inode.i_mode));
1499         if (retval)
1500                 com_err("make_link", retval, 0);
1501         return;
1502 }
1503
1504
1505 void do_link(int argc, char *argv[])
1506 {
1507         if (common_args_process(argc, argv, 3, 3, "link",
1508                                 "<source file> <dest_name>", CHECK_FS_RW))
1509                 return;
1510
1511         make_link(argv[1], argv[2]);
1512 }
1513
1514 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1515                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1516                             blk64_t ref_block EXT2FS_ATTR((unused)),
1517                             int ref_offset EXT2FS_ATTR((unused)),
1518                             void *private EXT2FS_ATTR((unused)))
1519 {
1520         blk64_t block;
1521
1522         block = *blocknr;
1523         ext2fs_block_alloc_stats2(fs, block, +1);
1524         return 0;
1525 }
1526
1527 void do_undel(int argc, char *argv[])
1528 {
1529         ext2_ino_t      ino;
1530         struct ext2_inode inode;
1531
1532         if (common_args_process(argc, argv, 2, 3, "undelete",
1533                                 "<inode_num> [dest_name]",
1534                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1535                 return;
1536
1537         ino = string_to_inode(argv[1]);
1538         if (!ino)
1539                 return;
1540
1541         if (debugfs_read_inode(ino, &inode, argv[1]))
1542                 return;
1543
1544         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1545                 com_err(argv[1], 0, "Inode is not marked as deleted");
1546                 return;
1547         }
1548
1549         /*
1550          * XXX this function doesn't handle changing the links count on the
1551          * parent directory when undeleting a directory.
1552          */
1553         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1554         inode.i_dtime = 0;
1555
1556         if (debugfs_write_inode(ino, &inode, argv[0]))
1557                 return;
1558
1559         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1560                               mark_blocks_proc, NULL);
1561
1562         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1563
1564         if (argc > 2)
1565                 make_link(argv[1], argv[2]);
1566 }
1567
1568 static void unlink_file_by_name(char *filename)
1569 {
1570         int             retval;
1571         ext2_ino_t      dir;
1572         char            *base_name;
1573
1574         base_name = strrchr(filename, '/');
1575         if (base_name) {
1576                 *base_name++ = '\0';
1577                 dir = string_to_inode(filename);
1578                 if (!dir)
1579                         return;
1580         } else {
1581                 dir = cwd;
1582                 base_name = filename;
1583         }
1584         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1585         if (retval)
1586                 com_err("unlink_file_by_name", retval, 0);
1587         return;
1588 }
1589
1590 void do_unlink(int argc, char *argv[])
1591 {
1592         if (common_args_process(argc, argv, 2, 2, "link",
1593                                 "<pathname>", CHECK_FS_RW))
1594                 return;
1595
1596         unlink_file_by_name(argv[1]);
1597 }
1598
1599 void do_copy_inode(int argc, char *argv[])
1600 {
1601         ext2_ino_t      src_ino, dest_ino;
1602         unsigned char   buf[4096];
1603
1604         if (common_args_process(argc, argv, 3, 3, "copy_inode",
1605                                 "<source file> <dest_name>", CHECK_FS_RW))
1606                 return;
1607
1608         src_ino = string_to_inode(argv[1]);
1609         if (!src_ino)
1610                 return;
1611
1612         dest_ino = string_to_inode(argv[2]);
1613         if (!dest_ino)
1614                 return;
1615
1616         if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
1617                                     argv[0], sizeof(buf)))
1618                 return;
1619
1620         if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
1621                                      argv[0], sizeof(buf)))
1622                 return;
1623 }
1624
1625 #endif /* READ_ONLY */
1626
1627 void do_find_free_block(int argc, char *argv[])
1628 {
1629         blk64_t free_blk, goal, first_free = 0;
1630         int             count;
1631         errcode_t       retval;
1632         char            *tmp;
1633
1634         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1635                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1636                 return;
1637         }
1638         if (check_fs_open(argv[0]))
1639                 return;
1640
1641         if (argc > 1) {
1642                 count = strtol(argv[1],&tmp,0);
1643                 if (*tmp) {
1644                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1645                         return;
1646                 }
1647         } else
1648                 count = 1;
1649
1650         if (argc > 2) {
1651                 goal = strtol(argv[2], &tmp, 0);
1652                 if (*tmp) {
1653                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1654                         return;
1655                 }
1656         }
1657         else
1658                 goal = current_fs->super->s_first_data_block;
1659
1660         printf("Free blocks found: ");
1661         free_blk = goal - 1;
1662         while (count-- > 0) {
1663                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1664                                            &free_blk);
1665                 if (first_free) {
1666                         if (first_free == free_blk)
1667                                 break;
1668                 } else
1669                         first_free = free_blk;
1670                 if (retval) {
1671                         com_err("ext2fs_new_block", retval, 0);
1672                         return;
1673                 } else
1674                         printf("%llu ", free_blk);
1675         }
1676         printf("\n");
1677 }
1678
1679 void do_find_free_inode(int argc, char *argv[])
1680 {
1681         ext2_ino_t      free_inode, dir;
1682         int             mode;
1683         int             retval;
1684         char            *tmp;
1685
1686         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1687                 com_err(argv[0], 0, "Usage: find_free_inode [dir [mode]]");
1688                 return;
1689         }
1690         if (check_fs_open(argv[0]))
1691                 return;
1692
1693         if (argc > 1) {
1694                 dir = strtol(argv[1], &tmp, 0);
1695                 if (*tmp) {
1696                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1697                         return;
1698                 }
1699         }
1700         else
1701                 dir = root;
1702         if (argc > 2) {
1703                 mode = strtol(argv[2], &tmp, 0);
1704                 if (*tmp) {
1705                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1706                         return;
1707                 }
1708         } else
1709                 mode = 010755;
1710
1711         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1712         if (retval)
1713                 com_err("ext2fs_new_inode", retval, 0);
1714         else
1715                 printf("Free inode found: %u\n", free_inode);
1716 }
1717
1718 #ifndef READ_ONLY
1719 void do_write(int argc, char *argv[])
1720 {
1721         errcode_t       retval;
1722
1723         if (common_args_process(argc, argv, 3, 3, "write",
1724                                 "<native file> <new file>", CHECK_FS_RW))
1725                 return;
1726
1727         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1728         if (retval)
1729                 com_err(argv[0], retval, 0);
1730 }
1731
1732 void do_mknod(int argc, char *argv[])
1733 {
1734         unsigned long   major, minor;
1735         errcode_t       retval;
1736         int             nr;
1737         struct stat     st;
1738
1739         if (check_fs_open(argv[0]))
1740                 return;
1741         if (argc < 3 || argv[2][1]) {
1742         usage:
1743                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1744                 return;
1745         }
1746
1747         minor = major = 0;
1748         switch (argv[2][0]) {
1749                 case 'p':
1750                         st.st_mode = S_IFIFO;
1751                         nr = 3;
1752                         break;
1753                 case 'c':
1754                         st.st_mode = S_IFCHR;
1755                         nr = 5;
1756                         break;
1757                 case 'b':
1758                         st.st_mode = S_IFBLK;
1759                         nr = 5;
1760                         break;
1761                 default:
1762                         nr = 0;
1763         }
1764
1765         if (nr == 5) {
1766                 major = strtoul(argv[3], argv+3, 0);
1767                 minor = strtoul(argv[4], argv+4, 0);
1768                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1769                         nr = 0;
1770         }
1771
1772         if (argc != nr)
1773                 goto usage;
1774
1775         st.st_rdev = makedev(major, minor);
1776         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1777         if (retval)
1778                 com_err(argv[0], retval, 0);
1779 }
1780
1781 void do_mkdir(int argc, char *argv[])
1782 {
1783         errcode_t retval;
1784
1785         if (common_args_process(argc, argv, 2, 2, "mkdir",
1786                                 "<filename>", CHECK_FS_RW))
1787                 return;
1788
1789         retval = do_mkdir_internal(current_fs, cwd, argv[1], root);
1790         if (retval)
1791                 com_err(argv[0], retval, 0);
1792
1793 }
1794
1795 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1796                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1797                                blk64_t ref_block EXT2FS_ATTR((unused)),
1798                                int ref_offset EXT2FS_ATTR((unused)),
1799                                void *private EXT2FS_ATTR((unused)))
1800 {
1801         blk64_t block;
1802
1803         block = *blocknr;
1804         ext2fs_block_alloc_stats2(fs, block, -1);
1805         return 0;
1806 }
1807
1808 static void kill_file_by_inode(ext2_ino_t inode)
1809 {
1810         struct ext2_inode inode_buf;
1811
1812         if (debugfs_read_inode(inode, &inode_buf, 0))
1813                 return;
1814         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1815         if (debugfs_write_inode(inode, &inode_buf, 0))
1816                 return;
1817         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1818                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1819                                       NULL, release_blocks_proc, NULL);
1820         }
1821         printf("\n");
1822         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1823                                   LINUX_S_ISDIR(inode_buf.i_mode));
1824 }
1825
1826
1827 void do_kill_file(int argc, char *argv[])
1828 {
1829         ext2_ino_t inode_num;
1830
1831         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1832                 return;
1833
1834         kill_file_by_inode(inode_num);
1835 }
1836
1837 void do_rm(int argc, char *argv[])
1838 {
1839         int retval;
1840         ext2_ino_t inode_num;
1841         struct ext2_inode inode;
1842
1843         if (common_args_process(argc, argv, 2, 2, "rm",
1844                                 "<filename>", CHECK_FS_RW))
1845                 return;
1846
1847         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1848         if (retval) {
1849                 com_err(argv[0], retval, "while trying to resolve filename");
1850                 return;
1851         }
1852
1853         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1854                 return;
1855
1856         if (LINUX_S_ISDIR(inode.i_mode)) {
1857                 com_err(argv[0], 0, "file is a directory");
1858                 return;
1859         }
1860
1861         --inode.i_links_count;
1862         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1863                 return;
1864
1865         unlink_file_by_name(argv[1]);
1866         if (inode.i_links_count == 0)
1867                 kill_file_by_inode(inode_num);
1868 }
1869
1870 struct rd_struct {
1871         ext2_ino_t      parent;
1872         int             empty;
1873 };
1874
1875 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1876                       int       entry EXT2FS_ATTR((unused)),
1877                       struct ext2_dir_entry *dirent,
1878                       int       offset EXT2FS_ATTR((unused)),
1879                       int       blocksize EXT2FS_ATTR((unused)),
1880                       char      *buf EXT2FS_ATTR((unused)),
1881                       void      *private)
1882 {
1883         struct rd_struct *rds = (struct rd_struct *) private;
1884
1885         if (dirent->inode == 0)
1886                 return 0;
1887         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1888                 return 0;
1889         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1890             (dirent->name[1] == '.')) {
1891                 rds->parent = dirent->inode;
1892                 return 0;
1893         }
1894         rds->empty = 0;
1895         return 0;
1896 }
1897
1898 void do_rmdir(int argc, char *argv[])
1899 {
1900         int retval;
1901         ext2_ino_t inode_num;
1902         struct ext2_inode inode;
1903         struct rd_struct rds;
1904
1905         if (common_args_process(argc, argv, 2, 2, "rmdir",
1906                                 "<filename>", CHECK_FS_RW))
1907                 return;
1908
1909         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1910         if (retval) {
1911                 com_err(argv[0], retval, "while trying to resolve filename");
1912                 return;
1913         }
1914
1915         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1916                 return;
1917
1918         if (!LINUX_S_ISDIR(inode.i_mode)) {
1919                 com_err(argv[0], 0, "file is not a directory");
1920                 return;
1921         }
1922
1923         rds.parent = 0;
1924         rds.empty = 1;
1925
1926         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1927                                     0, rmdir_proc, &rds);
1928         if (retval) {
1929                 com_err(argv[0], retval, "while iterating over directory");
1930                 return;
1931         }
1932         if (rds.empty == 0) {
1933                 com_err(argv[0], 0, "directory not empty");
1934                 return;
1935         }
1936
1937         inode.i_links_count = 0;
1938         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1939                 return;
1940
1941         unlink_file_by_name(argv[1]);
1942         kill_file_by_inode(inode_num);
1943
1944         if (rds.parent) {
1945                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1946                         return;
1947                 if (inode.i_links_count > 1)
1948                         inode.i_links_count--;
1949                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1950                         return;
1951         }
1952 }
1953 #endif /* READ_ONLY */
1954
1955 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1956                             char *argv[] EXT2FS_ATTR((unused)))
1957 {
1958         if (current_fs)
1959                 printf("Open mode: read-%s\n",
1960                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1961         printf("Filesystem in use: %s\n",
1962                current_fs ? current_fs->device_name : "--none--");
1963 }
1964
1965 #ifndef READ_ONLY
1966 void do_expand_dir(int argc, char *argv[])
1967 {
1968         ext2_ino_t inode;
1969         int retval;
1970
1971         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1972                 return;
1973
1974         retval = ext2fs_expand_dir(current_fs, inode);
1975         if (retval)
1976                 com_err("ext2fs_expand_dir", retval, 0);
1977         return;
1978 }
1979
1980 void do_features(int argc, char *argv[])
1981 {
1982         int     i;
1983
1984         if (check_fs_open(argv[0]))
1985                 return;
1986
1987         if ((argc != 1) && check_fs_read_write(argv[0]))
1988                 return;
1989         for (i=1; i < argc; i++) {
1990                 if (e2p_edit_feature(argv[i],
1991                                      &current_fs->super->s_feature_compat, 0))
1992                         com_err(argv[0], 0, "Unknown feature: %s\n",
1993                                 argv[i]);
1994                 else
1995                         ext2fs_mark_super_dirty(current_fs);
1996         }
1997         print_features(current_fs->super, stdout);
1998 }
1999 #endif /* READ_ONLY */
2000
2001 void do_bmap(int argc, char *argv[])
2002 {
2003         ext2_ino_t      ino;
2004         blk64_t         blk, pblk = 0;
2005         int             c, err, flags = 0, ret_flags = 0;
2006         errcode_t       errcode;
2007
2008         if (check_fs_open(argv[0]))
2009                 return;
2010
2011         reset_getopt();
2012         while ((c = getopt (argc, argv, "a")) != EOF) {
2013                 switch (c) {
2014                 case 'a':
2015                         flags |= BMAP_ALLOC;
2016                         break;
2017                 default:
2018                         goto print_usage;
2019                 }
2020         }
2021
2022         if (argc <= optind+1) {
2023         print_usage:
2024                 com_err(0, 0,
2025                         "Usage: bmap [-a] <file> logical_blk [physical_blk]");
2026                 return;
2027         }
2028
2029         ino = string_to_inode(argv[optind++]);
2030         if (!ino)
2031                 return;
2032         err = strtoblk(argv[0], argv[optind++], "logical block", &blk);
2033         if (err)
2034                 return;
2035
2036         if (argc > optind+1)
2037                 goto print_usage;
2038
2039         if (argc == optind+1) {
2040                 err = strtoblk(argv[0], argv[optind++],
2041                                "physical block", &pblk);
2042                 if (err)
2043                         return;
2044                 if (flags & BMAP_ALLOC) {
2045                         com_err(0, 0, "Can't set and allocate a block");
2046                         return;
2047                 }
2048                 flags |= BMAP_SET;
2049         }
2050
2051         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, flags, blk,
2052                                &ret_flags, &pblk);
2053         if (errcode) {
2054                 com_err(argv[0], errcode,
2055                         "while mapping logical block %llu\n", blk);
2056                 return;
2057         }
2058         printf("%llu", pblk);
2059         if (ret_flags & BMAP_RET_UNINIT)
2060                 fputs(" (uninit)", stdout);
2061         fputc('\n', stdout);
2062 }
2063
2064 void do_imap(int argc, char *argv[])
2065 {
2066         ext2_ino_t      ino;
2067         unsigned long   group, block, block_nr, offset;
2068
2069         if (common_args_process(argc, argv, 2, 2, argv[0],
2070                                 "<file>", 0))
2071                 return;
2072         ino = string_to_inode(argv[1]);
2073         if (!ino)
2074                 return;
2075
2076         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2077         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2078                 EXT2_INODE_SIZE(current_fs->super);
2079         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2080         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2081                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2082                         group);
2083                 return;
2084         }
2085         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2086                 block;
2087         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2088
2089         printf("Inode %d is part of block group %lu\n"
2090                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2091                block_nr, offset);
2092
2093 }
2094
2095 void do_idump(int argc, char *argv[])
2096 {
2097         ext2_ino_t      ino;
2098         unsigned char   *buf;
2099         errcode_t       err;
2100         int             isize;
2101
2102         if (common_args_process(argc, argv, 2, 2, argv[0],
2103                                 "<file>", 0))
2104                 return;
2105         ino = string_to_inode(argv[1]);
2106         if (!ino)
2107                 return;
2108
2109         isize = EXT2_INODE_SIZE(current_fs->super);
2110         err = ext2fs_get_mem(isize, &buf);
2111         if (err) {
2112                 com_err(argv[0], err, "while allocating memory");
2113                 return;
2114         }
2115
2116         err = ext2fs_read_inode_full(current_fs, ino,
2117                                      (struct ext2_inode *)buf, isize);
2118         if (err) {
2119                 com_err(argv[0], err, "while reading inode %u", ino);
2120                 goto err;
2121         }
2122
2123         do_byte_hexdump(stdout, buf, isize);
2124 err:
2125         ext2fs_free_mem(&buf);
2126 }
2127
2128 #ifndef READ_ONLY
2129 void do_set_current_time(int argc, char *argv[])
2130 {
2131         __s64 now;
2132
2133         if (common_args_process(argc, argv, 2, 2, argv[0],
2134                                 "<time>", 0))
2135                 return;
2136
2137         now = string_to_time(argv[1]);
2138         if (now == -1) {
2139                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2140                         argv[1]);
2141                 return;
2142
2143         } else {
2144                 printf("Setting current time to %s\n", time_to_string(now));
2145                 current_fs->now = now;
2146         }
2147 }
2148 #endif /* READ_ONLY */
2149
2150 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2151 {
2152         int compat, bit, ret;
2153         unsigned int feature_mask;
2154
2155         if (name) {
2156                 if (feature_type == E2P_FS_FEATURE)
2157                         ret = e2p_string2feature(name, &compat, &feature_mask);
2158                 else
2159                         ret = e2p_jrnl_string2feature(name, &compat,
2160                                                       &feature_mask);
2161                 if (ret)
2162                         return ret;
2163
2164                 if (!(supp[compat] & feature_mask))
2165                         return 1;
2166         } else {
2167                 for (compat = 0; compat < 3; compat++) {
2168                         for (bit = 0, feature_mask = 1; bit < 32;
2169                              bit++, feature_mask <<= 1) {
2170                                 if (supp[compat] & feature_mask) {
2171                                         if (feature_type == E2P_FS_FEATURE)
2172                                                 fprintf(stdout, " %s",
2173                                                 e2p_feature2string(compat,
2174                                                 feature_mask));
2175                                         else
2176                                                 fprintf(stdout, " %s",
2177                                                 e2p_jrnl_feature2string(compat,
2178                                                 feature_mask));
2179                                 }
2180                         }
2181                 }
2182                 fprintf(stdout, "\n");
2183         }
2184
2185         return 0;
2186 }
2187
2188 void do_supported_features(int argc, char *argv[])
2189 {
2190         int     ret;
2191         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2192                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2193                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2194         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2195                                  JFS_KNOWN_INCOMPAT_FEATURES,
2196                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2197
2198         if (argc > 1) {
2199                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2200                 if (ret) {
2201                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2202                                                 argv[1]);
2203                 }
2204                 if (ret)
2205                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2206                 else
2207                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2208         } else {
2209                 fprintf(stdout, "Supported features:");
2210                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2211                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2212         }
2213 }
2214
2215 #ifndef READ_ONLY
2216 void do_punch(int argc, char *argv[])
2217 {
2218         ext2_ino_t      ino;
2219         blk64_t         start, end;
2220         int             err;
2221         errcode_t       errcode;
2222
2223         if (common_args_process(argc, argv, 3, 4, argv[0],
2224                                 "<file> start_blk [end_blk]",
2225                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2226                 return;
2227
2228         ino = string_to_inode(argv[1]);
2229         if (!ino)
2230                 return;
2231         err = strtoblk(argv[0], argv[2], "logical block", &start);
2232         if (err)
2233                 return;
2234         if (argc == 4) {
2235                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2236                 if (err)
2237                         return;
2238         } else
2239                 end = ~0;
2240
2241         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2242
2243         if (errcode) {
2244                 com_err(argv[0], errcode,
2245                         "while truncating inode %u from %llu to %llu\n", ino,
2246                         (unsigned long long) start, (unsigned long long) end);
2247                 return;
2248         }
2249 }
2250
2251 void do_fallocate(int argc, char *argv[])
2252 {
2253         ext2_ino_t      ino;
2254         blk64_t         start, end;
2255         int             err;
2256         errcode_t       errcode;
2257
2258         if (common_args_process(argc, argv, 3, 4, argv[0],
2259                                 "<file> start_blk [end_blk]",
2260                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2261                 return;
2262
2263         ino = string_to_inode(argv[1]);
2264         if (!ino)
2265                 return;
2266         err = strtoblk(argv[0], argv[2], "logical block", &start);
2267         if (err)
2268                 return;
2269         if (argc == 4) {
2270                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2271                 if (err)
2272                         return;
2273         } else
2274                 end = ~0;
2275
2276         errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
2277                                    ino, NULL, ~0ULL, start, end - start + 1);
2278
2279         if (errcode) {
2280                 com_err(argv[0], errcode,
2281                         "while fallocating inode %u from %llu to %llu\n", ino,
2282                         (unsigned long long) start, (unsigned long long) end);
2283                 return;
2284         }
2285 }
2286 #endif /* READ_ONLY */
2287
2288 void do_symlink(int argc, char *argv[])
2289 {
2290         errcode_t       retval;
2291
2292         if (common_args_process(argc, argv, 3, 3, "symlink",
2293                                 "<filename> <target>", CHECK_FS_RW))
2294                 return;
2295
2296         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2297         if (retval)
2298                 com_err(argv[0], retval, 0);
2299
2300 }
2301
2302 #if CONFIG_MMP
2303 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2304 {
2305         struct mmp_struct *mmp_s;
2306         unsigned long long mmp_block;
2307         time_t t;
2308         errcode_t retval = 0;
2309
2310         if (check_fs_open(argv[0]))
2311                 return;
2312
2313         if (argc > 1) {
2314                 char *end = NULL;
2315                 mmp_block = strtoull(argv[1], &end, 0);
2316                 if (end == argv[0] || mmp_block == 0) {
2317                         fprintf(stderr, "%s: invalid MMP block '%s' given\n",
2318                                 argv[0], argv[1]);
2319                         return;
2320                 }
2321         } else {
2322                 mmp_block = current_fs->super->s_mmp_block;
2323         }
2324
2325         if (mmp_block == 0) {
2326                 fprintf(stderr, "%s: MMP: not active on this filesystem.\n",
2327                         argv[0]);
2328                 return;
2329         }
2330
2331         if (current_fs->mmp_buf == NULL) {
2332                 retval = ext2fs_get_mem(current_fs->blocksize,
2333                                         &current_fs->mmp_buf);
2334                 if (retval) {
2335                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2336                         return;
2337                 }
2338         }
2339
2340         mmp_s = current_fs->mmp_buf;
2341
2342         retval = ext2fs_mmp_read(current_fs, mmp_block, current_fs->mmp_buf);
2343         if (retval) {
2344                 com_err(argv[0], retval, "reading MMP block %llu.\n",
2345                         mmp_block);
2346                 return;
2347         }
2348
2349         t = mmp_s->mmp_time;
2350         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2351         fprintf(stdout, "update_interval: %d\n",
2352                 current_fs->super->s_mmp_update_interval);
2353         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2354         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2355         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2356         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2357         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2358         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2359         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2360         fprintf(stdout, "MMP is unsupported, please recompile with "
2361                         "--enable-mmp\n");
2362 }
2363 #else
2364 void do_dump_mmp(int argc EXT2FS_ATTR((unused)),
2365                  char *argv[] EXT2FS_ATTR((unused)))
2366 {
2367         fprintf(stdout, "MMP is unsupported, please recompile with "
2368                         "--enable-mmp\n");
2369 }
2370 #endif
2371
2372 static int source_file(const char *cmd_file, int ss_idx)
2373 {
2374         FILE            *f;
2375         char            buf[BUFSIZ];
2376         char            *cp;
2377         int             exit_status = 0;
2378         int             retval;
2379
2380         if (strcmp(cmd_file, "-") == 0)
2381                 f = stdin;
2382         else {
2383                 f = fopen(cmd_file, "r");
2384                 if (!f) {
2385                         perror(cmd_file);
2386                         exit(1);
2387                 }
2388         }
2389         fflush(stdout);
2390         fflush(stderr);
2391         setbuf(stdout, NULL);
2392         setbuf(stderr, NULL);
2393         while (!feof(f)) {
2394                 if (fgets(buf, sizeof(buf), f) == NULL)
2395                         break;
2396                 cp = strchr(buf, '\n');
2397                 if (cp)
2398                         *cp = 0;
2399                 cp = strchr(buf, '\r');
2400                 if (cp)
2401                         *cp = 0;
2402                 printf("debugfs: %s\n", buf);
2403                 retval = ss_execute_line(ss_idx, buf);
2404                 if (retval) {
2405                         ss_perror(ss_idx, retval, buf);
2406                         exit_status++;
2407                 }
2408         }
2409         if (f != stdin)
2410                 fclose(f);
2411         return exit_status;
2412 }
2413
2414 int main(int argc, char **argv)
2415 {
2416         int             retval;
2417         const char      *usage =
2418                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2419                 "[-R request] [-d data_source_device] [-i] [-n] [-D] [-V] ["
2420 #ifndef READ_ONLY
2421                 "[-w] [-z undo_file] "
2422 #endif
2423                 "[-c]] [device]";
2424         int             c;
2425         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2426         char            *request = 0;
2427         int             exit_status = 0;
2428         char            *cmd_file = 0;
2429         blk64_t         superblock = 0;
2430         blk64_t         blocksize = 0;
2431         int             catastrophic = 0;
2432         char            *data_filename = 0;
2433 #ifdef READ_ONLY
2434         const char      *opt_string = "nicR:f:b:s:Vd:D";
2435 #else
2436         const char      *opt_string = "niwcR:f:b:s:Vd:Dz:";
2437         char            *undo_file = NULL;
2438 #endif
2439 #ifdef CONFIG_JBD_DEBUG
2440         char            *jbd_debug;
2441 #endif
2442
2443         if (debug_prog_name == 0)
2444 #ifdef READ_ONLY
2445                 debug_prog_name = "rdebugfs";
2446 #else
2447                 debug_prog_name = "debugfs";
2448 #endif
2449         add_error_table(&et_ext2_error_table);
2450         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2451                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2452
2453 #ifdef CONFIG_JBD_DEBUG
2454         jbd_debug = ss_safe_getenv("DEBUGFS_JBD_DEBUG");
2455         if (jbd_debug) {
2456                 int res = sscanf(jbd_debug, "%d", &journal_enable_debug);
2457
2458                 if (res != 1) {
2459                         fprintf(stderr,
2460                                 "DEBUGFS_JBD_DEBUG \"%s\" not an integer\n\n",
2461                                 jbd_debug);
2462                         exit(1);
2463                 }
2464         }
2465 #endif
2466         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2467                 switch (c) {
2468                 case 'R':
2469                         request = optarg;
2470                         break;
2471                 case 'f':
2472                         cmd_file = optarg;
2473                         break;
2474                 case 'd':
2475                         data_filename = optarg;
2476                         break;
2477                 case 'i':
2478                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2479                         break;
2480                 case 'n':
2481                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2482                         break;
2483 #ifndef READ_ONLY
2484                 case 'w':
2485                         open_flags |= EXT2_FLAG_RW;
2486                         break;
2487 #endif
2488                 case 'D':
2489                         open_flags |= EXT2_FLAG_DIRECT_IO;
2490                         break;
2491                 case 'b':
2492                         blocksize = parse_ulong(optarg, argv[0],
2493                                                 "block size", 0);
2494                         break;
2495                 case 's':
2496                         retval = strtoblk(argv[0], optarg,
2497                                           "superblock block number",
2498                                           &superblock);
2499                         if (retval)
2500                                 return 1;
2501                         break;
2502                 case 'c':
2503                         catastrophic = 1;
2504                         break;
2505                 case 'V':
2506                         /* Print version number and exit */
2507                         fprintf(stderr, "\tUsing %s\n",
2508                                 error_message(EXT2_ET_BASE));
2509                         exit(0);
2510                 case 'z':
2511                         undo_file = optarg;
2512                         break;
2513                 default:
2514                         com_err(argv[0], 0, usage, debug_prog_name);
2515                         return 1;
2516                 }
2517         }
2518         if (optind < argc)
2519                 open_filesystem(argv[optind], open_flags,
2520                                 superblock, blocksize, catastrophic,
2521                                 data_filename, undo_file);
2522
2523         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2524                                        &debug_cmds, &retval);
2525         if (retval) {
2526                 ss_perror(sci_idx, retval, "creating invocation");
2527                 exit(1);
2528         }
2529         ss_get_readline(sci_idx);
2530
2531         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2532         if (retval) {
2533                 ss_perror(sci_idx, retval, "adding standard requests");
2534                 exit (1);
2535         }
2536         if (extra_cmds)
2537                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2538         if (retval) {
2539                 ss_perror(sci_idx, retval, "adding extra requests");
2540                 exit (1);
2541         }
2542         if (request) {
2543                 retval = 0;
2544                 retval = ss_execute_line(sci_idx, request);
2545                 if (retval) {
2546                         ss_perror(sci_idx, retval, request);
2547                         exit_status++;
2548                 }
2549         } else if (cmd_file) {
2550                 exit_status = source_file(cmd_file, sci_idx);
2551         } else {
2552                 ss_listen(sci_idx);
2553         }
2554
2555         ss_delete_invocation(sci_idx);
2556
2557         if (current_fs)
2558                 close_filesystem();
2559
2560         remove_error_table(&et_ext2_error_table);
2561         return exit_status;
2562 }