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         const char      *tdb_dir = NULL;
  64         char            *tdb_file = NULL;
  65         char            *dev_name, *tmp_name;
  66
  67         /* (re)open a specific undo file */
  68         if (undo_file && undo_file[0] != 0) {
  69                 retval = set_undo_io_backing_manager(*io_ptr);
  70                 if (retval)
  71                         goto err;
  72                 *io_ptr = undo_io_manager;
  73                 retval = set_undo_io_backup_file(undo_file);
  74                 if (retval)
  75                         goto err;
  76                 printf("Overwriting existing filesystem; this can be undone "
  77                         "using the command:\n"
  78                         "    e2undo %s %s\n\n",
  79                         undo_file, device_name);
  80                 return retval;
  81         }
  82
  83         /*
  84          * Configuration via a conf file would be
  85          * nice
  86          */
  87         tdb_dir = ss_safe_getenv("E2FSPROGS_UNDO_DIR");
  88         if (!tdb_dir)
  89                 tdb_dir = "/var/lib/e2fsprogs";
  90
  91         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
  92             access(tdb_dir, W_OK))
  93                 return 0;
  94
  95         tmp_name = strdup(device_name);
  96         if (!tmp_name)
  97                 goto errout;
  98         dev_name = basename(tmp_name);
  99         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
 100         if (!tdb_file) {
 101                 free(tmp_name);
 102                 goto errout;
 103         }
 104         sprintf(tdb_file, "%s/debugfs-%s.e2undo", tdb_dir, dev_name);
 105         free(tmp_name);
 106
 107         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
 108                 retval = errno;
 109                 com_err("debugfs", retval,
 110                         "while trying to delete %s", tdb_file);
 111                 goto errout;
 112         }
 113
 114         retval = set_undo_io_backing_manager(*io_ptr);
 115         if (retval)
 116                 goto errout;
 117         *io_ptr = undo_io_manager;
 118         retval = set_undo_io_backup_file(tdb_file);
 119         if (retval)
 120                 goto errout;
 121         printf("Overwriting existing filesystem; this can be undone "
 122                 "using the command:\n"
 123                 "    e2undo %s %s\n\n", tdb_file, device_name);
 124
 125         free(tdb_file);
 126         return 0;
 127 errout:
 128         free(tdb_file);
 129 err:
 130         com_err("debugfs", retval, "while trying to setup undo file\n");
 131         return retval;
 132 }
 133
 134 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
 135                             blk64_t blocksize, int catastrophic,
 136                             char *data_filename, char *undo_file)
 137 {
 138         int     retval;
 139         io_channel data_io = 0;
 140         io_manager io_ptr = unix_io_manager;
 141
 142         if (superblock != 0 && blocksize == 0) {
 143                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
 144                 current_fs = NULL;
 145                 return;
 146         }
 147
 148         if (data_filename) {
 149                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
 150                         com_err(device, 0,
 151                                 "The -d option is only valid when reading an e2image file");
 152                         current_fs = NULL;
 153                         return;
 154                 }
 155                 retval = unix_io_manager->open(data_filename, 0, &data_io);
 156                 if (retval) {
 157                         com_err(data_filename, 0, "while opening data source");
 158                         current_fs = NULL;
 159                         return;
 160                 }
 161         }
 162
 163         if (catastrophic)
 164                 open_flags |= EXT2_FLAG_SKIP_MMP | EXT2_FLAG_IGNORE_SB_ERRORS;
 165
 166         if (undo_file) {
 167                 retval = debugfs_setup_tdb(device, undo_file, &io_ptr);
 168                 if (retval)
 169                         exit(1);
 170         }
 171
 172 try_open_again:
 173         retval = ext2fs_open(device, open_flags, superblock, blocksize,
 174                              io_ptr, &current_fs);
 175         if (retval && !(open_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 176                 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 177                 printf("Checksum errors in superblock!  Retrying...\n");
 178                 goto try_open_again;
 179         }
 180         if (retval) {
 181                 com_err(debug_prog_name, retval,
 182                         "while trying to open %s", device);
 183                 if (retval == EXT2_ET_BAD_MAGIC)
 184                         check_plausibility(device, CHECK_FS_EXIST, NULL);
 185                 current_fs = NULL;
 186                 return;
 187         }
 188         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 189
 190         if (catastrophic)
 191                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 192         else {
 193                 retval = ext2fs_read_bitmaps(current_fs);
 194                 if (retval) {
 195                         com_err(device, retval,
 196                                 "while reading allocation bitmaps");
 197                         goto errout;
 198                 }
 199         }
 200
 201         if (data_io) {
 202                 retval = ext2fs_set_data_io(current_fs, data_io);
 203                 if (retval) {
 204                         com_err(device, retval,
 205                                 "while setting data source");
 206                         goto errout;
 207                 }
 208         }
 209
 210         root = cwd = EXT2_ROOT_INO;
 211         return;
 212
 213 errout:
 214         retval = ext2fs_close_free(&current_fs);
 215         if (retval)
 216                 com_err(device, retval, "while trying to close filesystem");
 217 }
 218
 219 void do_open_filesys(int argc, char **argv)
 220 {
 221         int     c, err;
 222         int     catastrophic = 0;
 223         blk64_t superblock = 0;
 224         blk64_t blocksize = 0;
 225         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 226         char    *data_filename = 0;
 227         char    *undo_file = NULL;
 228
 229         reset_getopt();
 230         while ((c = getopt(argc, argv, "iwfecb:s:d:Dz:")) != EOF) {
 231                 switch (c) {
 232                 case 'i':
 233                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 234                         break;
 235                 case 'w':
 236 #ifdef READ_ONLY
 237                         goto print_usage;
 238 #else
 239                         open_flags |= EXT2_FLAG_RW;
 240 #endif /* READ_ONLY */
 241                         break;
 242                 case 'f':
 243                         open_flags |= EXT2_FLAG_FORCE;
 244                         break;
 245                 case 'e':
 246                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 247                         break;
 248                 case 'c':
 249                         catastrophic = 1;
 250                         break;
 251                 case 'd':
 252                         data_filename = optarg;
 253                         break;
 254                 case 'D':
 255                         open_flags |= EXT2_FLAG_DIRECT_IO;
 256                         break;
 257                 case 'b':
 258                         blocksize = parse_ulong(optarg, argv[0],
 259                                                 "block size", &err);
 260                         if (err)
 261                                 return;
 262                         break;
 263                 case 's':
 264                         err = strtoblk(argv[0], optarg,
 265                                        "superblock block number", &superblock);
 266                         if (err)
 267                                 return;
 268                         break;
 269                 case 'z':
 270                         undo_file = optarg;
 271                         break;
 272                 default:
 273                         goto print_usage;
 274                 }
 275         }
 276         if (optind != argc-1) {
 277                 goto print_usage;
 278         }
 279         if (check_fs_not_open(argv[0]))
 280                 return;
 281         open_filesystem(argv[optind], open_flags,
 282                         superblock, blocksize, catastrophic,
 283                         data_filename, undo_file);
 284         return;
 285
 286 print_usage:
 287         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 288                 "[-d image_filename] [-z undo_file] [-c] [-i] [-f] [-e] [-D] "
 289 #ifndef READ_ONLY
 290                 "[-w] "
 291 #endif
 292                 "<device>\n", argv[0]);
 293 }
 294
 295 void do_lcd(int argc, char **argv)
 296 {
 297         if (argc != 2) {
 298                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 299                 return;
 300         }
 301
 302         if (chdir(argv[1]) == -1) {
 303                 com_err(argv[0], errno,
 304                         "while trying to change native directory to %s",
 305                         argv[1]);
 306                 return;
 307         }
 308 }
 309
 310 static void close_filesystem(NOARGS)
 311 {
 312         int     retval;
 313
 314         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 315                 retval = ext2fs_write_inode_bitmap(current_fs);
 316                 if (retval)
 317                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 318         }
 319         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 320                 retval = ext2fs_write_block_bitmap(current_fs);
 321                 if (retval)
 322                         com_err("ext2fs_write_block_bitmap", retval, 0);
 323         }
 324         if (current_qctx)
 325                 quota_release_context(&current_qctx);
 326         retval = ext2fs_close_free(&current_fs);
 327         if (retval)
 328                 com_err("ext2fs_close", retval, 0);
 329         return;
 330 }
 331
 332 void do_close_filesys(int argc, char **argv)
 333 {
 334         int     c;
 335
 336         if (check_fs_open(argv[0]))
 337                 return;
 338
 339         reset_getopt();
 340         while ((c = getopt (argc, argv, "a")) != EOF) {
 341                 switch (c) {
 342                 case 'a':
 343                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 344                         break;
 345                 default:
 346                         goto print_usage;
 347                 }
 348         }
 349
 350         if (argc > optind) {
 351         print_usage:
 352                 com_err(0, 0, "Usage: close_filesys [-a]");
 353                 return;
 354         }
 355
 356         close_filesystem();
 357 }
 358
 359 #ifndef READ_ONLY
 360 void do_init_filesys(int argc, char **argv)
 361 {
 362         struct ext2_super_block param;
 363         errcode_t       retval;
 364         int             err;
 365         blk64_t         blocks;
 366
 367         if (common_args_process(argc, argv, 3, 3, "initialize",
 368                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 369                 return;
 370
 371         memset(&param, 0, sizeof(struct ext2_super_block));
 372         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 373         if (err)
 374                 return;
 375         ext2fs_blocks_count_set(&param, blocks);
 376         retval = ext2fs_initialize(argv[1], 0, &param,
 377                                    unix_io_manager, &current_fs);
 378         if (retval) {
 379                 com_err(argv[1], retval, "while initializing filesystem");
 380                 current_fs = NULL;
 381                 return;
 382         }
 383         root = cwd = EXT2_ROOT_INO;
 384         return;
 385 }
 386
 387 static void print_features(struct ext2_super_block * s, FILE *f)
 388 {
 389         int     i, j, printed=0;
 390         __u32   *mask = &s->s_feature_compat, m;
 391
 392         fputs("Filesystem features:", f);
 393         for (i=0; i <3; i++,mask++) {
 394                 for (j=0,m=1; j < 32; j++, m<<=1) {
 395                         if (*mask & m) {
 396                                 fprintf(f, " %s", e2p_feature2string(i, m));
 397                                 printed++;
 398                         }
 399                 }
 400         }
 401         if (printed == 0)
 402                 fputs("(none)", f);
 403         fputs("\n", f);
 404 }
 405 #endif /* READ_ONLY */
 406
 407 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 408                           const char *str, int *first, FILE *f)
 409 {
 410         if (ext2fs_bg_flags_test(fs, group, mask)) {
 411                 if (*first) {
 412                         fputs("           [", f);
 413                         *first = 0;
 414                 } else
 415                         fputs(", ", f);
 416                 fputs(str, f);
 417         }
 418 }
 419
 420 void do_show_super_stats(int argc, char *argv[])
 421 {
 422         const char *units ="block";
 423         dgrp_t  i;
 424         FILE    *out;
 425         int     c, header_only = 0;
 426         int     numdirs = 0, first, gdt_csum;
 427
 428         reset_getopt();
 429         while ((c = getopt (argc, argv, "h")) != EOF) {
 430                 switch (c) {
 431                 case 'h':
 432                         header_only++;
 433                         break;
 434                 default:
 435                         goto print_usage;
 436                 }
 437         }
 438         if (optind != argc) {
 439                 goto print_usage;
 440         }
 441         if (check_fs_open(argv[0]))
 442                 return;
 443         out = open_pager();
 444
 445         if (ext2fs_has_feature_bigalloc(current_fs->super))
 446                 units = "cluster";
 447
 448         list_super2(current_fs->super, out);
 449         if (ext2fs_has_feature_metadata_csum(current_fs->super) &&
 450             !ext2fs_superblock_csum_verify(current_fs,
 451                                            current_fs->super)) {
 452                 __u32 orig_csum = current_fs->super->s_checksum;
 453
 454                 ext2fs_superblock_csum_set(current_fs,
 455                                            current_fs->super);
 456                 fprintf(out, "Expected Checksum:        0x%08x\n",
 457                         current_fs->super->s_checksum);
 458                 current_fs->super->s_checksum = orig_csum;
 459         }
 460         for (i=0; i < current_fs->group_desc_count; i++)
 461                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 462         fprintf(out, "Directories:              %d\n", numdirs);
 463
 464         if (header_only) {
 465                 close_pager(out);
 466                 return;
 467         }
 468
 469         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 470         for (i = 0; i < current_fs->group_desc_count; i++) {
 471                 fprintf(out, " Group %2d: block bitmap at %llu, "
 472                         "inode bitmap at %llu, "
 473                         "inode table at %llu\n"
 474                         "           %u free %s%s, "
 475                         "%u free %s, "
 476                         "%u used %s%s",
 477                         i, ext2fs_block_bitmap_loc(current_fs, i),
 478                         ext2fs_inode_bitmap_loc(current_fs, i),
 479                         ext2fs_inode_table_loc(current_fs, i),
 480                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 481                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 482                         "s" : "",
 483                         ext2fs_bg_free_inodes_count(current_fs, i),
 484                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 485                         "inodes" : "inode",
 486                         ext2fs_bg_used_dirs_count(current_fs, i),
 487                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 488                                 : "directory", gdt_csum ? ", " : "\n");
 489                 if (gdt_csum)
 490                         fprintf(out, "%u unused %s\n",
 491                                 ext2fs_bg_itable_unused(current_fs, i),
 492                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 493                                 "inodes" : "inode");
 494                 first = 1;
 495                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 496                               &first, out);
 497                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 498                               &first, out);
 499                 if (gdt_csum) {
 500                         fprintf(out, "%sChecksum 0x%04x",
 501                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 502                         first = 0;
 503                 }
 504                 if (!first)
 505                         fputs("]\n", out);
 506         }
 507         close_pager(out);
 508         return;
 509 print_usage:
 510         fprintf(stderr, "%s: Usage: show_super_stats [-h]\n", argv[0]);
 511 }
 512
 513 #ifndef READ_ONLY
 514 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 515                       char **argv EXT2FS_ATTR((unused)))
 516 {
 517         if (check_fs_open(argv[0]))
 518                 return;
 519         if (check_fs_read_write(argv[0]))
 520                 return;
 521
 522         if (argv[1] && !strcmp(argv[1], "-clean"))
 523                 current_fs->super->s_state |= EXT2_VALID_FS;
 524         else
 525                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 526         ext2fs_mark_super_dirty(current_fs);
 527 }
 528 #endif /* READ_ONLY */
 529
 530 struct list_blocks_struct {
 531         FILE            *f;
 532         e2_blkcnt_t     total;
 533         blk64_t         first_block, last_block;
 534         e2_blkcnt_t     first_bcnt, last_bcnt;
 535         e2_blkcnt_t     first;
 536 };
 537
 538 static void finish_range(struct list_blocks_struct *lb)
 539 {
 540         if (lb->first_block == 0)
 541                 return;
 542         if (lb->first)
 543                 lb->first = 0;
 544         else
 545                 fprintf(lb->f, ", ");
 546         if (lb->first_block == lb->last_block)
 547                 fprintf(lb->f, "(%lld):%llu",
 548                         (long long)lb->first_bcnt, lb->first_block);
 549         else
 550                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 551                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 552                         lb->first_block, lb->last_block);
 553         lb->first_block = 0;
 554 }
 555
 556 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 557                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 558                             blk64_t ref_block EXT2FS_ATTR((unused)),
 559                             int ref_offset EXT2FS_ATTR((unused)),
 560                             void *private)
 561 {
 562         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 563
 564         lb->total++;
 565         if (blockcnt >= 0) {
 566                 /*
 567                  * See if we can add on to the existing range (if it exists)
 568                  */
 569                 if (lb->first_block &&
 570                     (lb->last_block+1 == *blocknr) &&
 571                     (lb->last_bcnt+1 == blockcnt)) {
 572                         lb->last_block = *blocknr;
 573                         lb->last_bcnt = blockcnt;
 574                         return 0;
 575                 }
 576                 /*
 577                  * Start a new range.
 578                  */
 579                 finish_range(lb);
 580                 lb->first_block = lb->last_block = *blocknr;
 581                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 582                 return 0;
 583         }
 584         /*
 585          * Not a normal block.  Always force a new range.
 586          */
 587         finish_range(lb);
 588         if (lb->first)
 589                 lb->first = 0;
 590         else
 591                 fprintf(lb->f, ", ");
 592         if (blockcnt == -1)
 593                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 594         else if (blockcnt == -2)
 595                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 596         else if (blockcnt == -3)
 597                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 598         return 0;
 599 }
 600
 601 static void internal_dump_inode_extra(FILE *out,
 602                                       const char *prefix EXT2FS_ATTR((unused)),
 603                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 604                                       struct ext2_inode_large *inode)
 605 {
 606         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 607         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 608                         EXT2_GOOD_OLD_INODE_SIZE) {
 609                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 610                                 inode->i_extra_isize);
 611                 return;
 612         }
 613 }
 614
 615 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 616 {
 617         struct list_blocks_struct lb;
 618
 619         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 620         lb.total = 0;
 621         lb.first_block = 0;
 622         lb.f = f;
 623         lb.first = 1;
 624         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 625                               list_blocks_proc, (void *)&lb);
 626         finish_range(&lb);
 627         if (lb.total)
 628                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 629         fprintf(f,"\n");
 630 }
 631
 632 static int int_log10(unsigned long long arg)
 633 {
 634         int     l = 0;
 635
 636         arg = arg / 10;
 637         while (arg) {
 638                 l++;
 639                 arg = arg / 10;
 640         }
 641         return l;
 642 }
 643
 644 #define DUMP_LEAF_EXTENTS       0x01
 645 #define DUMP_NODE_EXTENTS       0x02
 646 #define DUMP_EXTENT_TABLE       0x04
 647
 648 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 649                          int flags, int logical_width, int physical_width)
 650 {
 651         ext2_extent_handle_t    handle;
 652         struct ext2fs_extent    extent;
 653         struct ext2_extent_info info;
 654         int                     op = EXT2_EXTENT_ROOT;
 655         unsigned int            printed = 0;
 656         errcode_t               errcode;
 657
 658         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 659         if (errcode)
 660                 return;
 661
 662         if (flags & DUMP_EXTENT_TABLE)
 663                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 664                         (logical_width*2)+3, "Logical",
 665                         (physical_width*2)+3, "Physical");
 666         else
 667                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 668
 669         while (1) {
 670                 errcode = ext2fs_extent_get(handle, op, &extent);
 671
 672                 if (errcode)
 673                         break;
 674
 675                 op = EXT2_EXTENT_NEXT;
 676
 677                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 678                         continue;
 679
 680                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 681                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 682                                 continue;
 683                 } else {
 684                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 685                                 continue;
 686                 }
 687
 688                 errcode = ext2fs_extent_get_info(handle, &info);
 689                 if (errcode)
 690                         continue;
 691
 692                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 693                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 694                                 continue;
 695
 696                         if (flags & DUMP_EXTENT_TABLE) {
 697                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 698                                         "%*llu%*s %6u\n",
 699                                         info.curr_level, info.max_depth,
 700                                         info.curr_entry, info.num_entries,
 701                                         logical_width,
 702                                         extent.e_lblk,
 703                                         logical_width,
 704                                         extent.e_lblk + (extent.e_len - 1),
 705                                         physical_width,
 706                                         extent.e_pblk,
 707                                         physical_width+3, "", extent.e_len);
 708                                 continue;
 709                         }
 710
 711                         fprintf(f, "%s(ETB%d):%lld",
 712                                 printed ? ", " : "", info.curr_level,
 713                                 extent.e_pblk);
 714                         printed = 1;
 715                         continue;
 716                 }
 717
 718                 if (flags & DUMP_EXTENT_TABLE) {
 719                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 720                                 "%*llu - %*llu %6u %s\n",
 721                                 info.curr_level, info.max_depth,
 722                                 info.curr_entry, info.num_entries,
 723                                 logical_width,
 724                                 extent.e_lblk,
 725                                 logical_width,
 726                                 extent.e_lblk + (extent.e_len - 1),
 727                                 physical_width,
 728                                 extent.e_pblk,
 729                                 physical_width,
 730                                 extent.e_pblk + (extent.e_len - 1),
 731                                 extent.e_len,
 732                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 733                                         "Uninit" : "");
 734                         continue;
 735                 }
 736
 737                 if (extent.e_len == 0)
 738                         continue;
 739                 else if (extent.e_len == 1)
 740                         fprintf(f,
 741                                 "%s(%lld%s):%lld",
 742                                 printed ? ", " : "",
 743                                 extent.e_lblk,
 744                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 745                                 "[u]" : "",
 746                                 extent.e_pblk);
 747                 else
 748                         fprintf(f,
 749                                 "%s(%lld-%lld%s):%lld-%lld",
 750                                 printed ? ", " : "",
 751                                 extent.e_lblk,
 752                                 extent.e_lblk + (extent.e_len - 1),
 753                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 754                                         "[u]" : "",
 755                                 extent.e_pblk,
 756                                 extent.e_pblk + (extent.e_len - 1));
 757                 printed = 1;
 758         }
 759         if (printed)
 760                 fprintf(f, "\n");
 761         ext2fs_extent_free(handle);
 762 }
 763
 764 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 765 {
 766         errcode_t retval;
 767         size_t size;
 768
 769         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 770         if (!retval)
 771                 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
 772 }
 773
 774 static void dump_inline_symlink(FILE *out, ext2_ino_t inode_num,
 775                                 struct ext2_inode *inode, const char *prefix)
 776 {
 777         errcode_t retval;
 778         char *buf = NULL;
 779         size_t size;
 780
 781         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 782         if (retval)
 783                 goto out;
 784
 785         retval = ext2fs_get_memzero(size + 1, &buf);
 786         if (retval)
 787                 goto out;
 788
 789         retval = ext2fs_inline_data_get(current_fs, inode_num,
 790                                         inode, buf, &size);
 791         if (retval)
 792                 goto out;
 793
 794         fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 795                 (int)size, buf);
 796 out:
 797         if (buf)
 798                 ext2fs_free_mem(&buf);
 799         if (retval)
 800                 com_err(__func__, retval, "while dumping link destination");
 801 }
 802
 803 void internal_dump_inode(FILE *out, const char *prefix,
 804                          ext2_ino_t inode_num, struct ext2_inode *inode,
 805                          int do_dump_blocks)
 806 {
 807         const char *i_type;
 808         char frag, fsize;
 809         int os = current_fs->super->s_creator_os;
 810         struct ext2_inode_large *large_inode;
 811         int is_large_inode = 0;
 812
 813         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 814                 is_large_inode = 1;
 815         large_inode = (struct ext2_inode_large *) inode;
 816
 817         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 818         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 819         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 820         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 821         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 822         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 823         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 824         else i_type = "bad type";
 825         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 826         fprintf(out, "%sMode:  0%03o   Flags: 0x%x\n",
 827                 prefix, inode->i_mode & 07777, inode->i_flags);
 828         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 829                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 830                         prefix, inode->i_generation, large_inode->i_version_hi,
 831                         inode->osd1.linux1.l_i_version);
 832         } else {
 833                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 834                         inode->i_generation, inode->osd1.linux1.l_i_version);
 835         }
 836         fprintf(out, "%sUser: %5d   Group: %5d",
 837                 prefix, inode_uid(*inode), inode_gid(*inode));
 838         if (is_large_inode && large_inode->i_extra_isize >= 32)
 839                 fprintf(out, "   Project: %5d", large_inode->i_projid);
 840         fputs("   Size: ", out);
 841         if (LINUX_S_ISREG(inode->i_mode))
 842                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 843         else
 844                 fprintf(out, "%d\n", inode->i_size);
 845         if (os == EXT2_OS_HURD)
 846                 fprintf(out,
 847                         "%sFile ACL: %d Translator: %d\n",
 848                         prefix,
 849                         inode->i_file_acl,
 850                         inode->osd1.hurd1.h_i_translator);
 851         else
 852                 fprintf(out, "%sFile ACL: %llu\n",
 853                         prefix,
 854                         inode->i_file_acl | ((long long)
 855                                 (inode->osd2.linux2.l_i_file_acl_high) << 32));
 856         if (os != EXT2_OS_HURD)
 857                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 858                         prefix, inode->i_links_count,
 859                         (((unsigned long long)
 860                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 861                         inode->i_blocks);
 862         else
 863                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 864                         prefix, inode->i_links_count, inode->i_blocks);
 865         switch (os) {
 866             case EXT2_OS_HURD:
 867                 frag = inode->osd2.hurd2.h_i_frag;
 868                 fsize = inode->osd2.hurd2.h_i_fsize;
 869                 break;
 870             default:
 871                 frag = fsize = 0;
 872         }
 873         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 874                 prefix, inode->i_faddr, frag, fsize);
 875         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 876                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 877                         inode->i_ctime, large_inode->i_ctime_extra,
 878                         inode_time_to_string(inode->i_ctime,
 879                                              large_inode->i_ctime_extra));
 880                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 881                         inode->i_atime, large_inode->i_atime_extra,
 882                         inode_time_to_string(inode->i_atime,
 883                                              large_inode->i_atime_extra));
 884                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 885                         inode->i_mtime, large_inode->i_mtime_extra,
 886                         inode_time_to_string(inode->i_mtime,
 887                                              large_inode->i_mtime_extra));
 888                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 889                         large_inode->i_crtime, large_inode->i_crtime_extra,
 890                         inode_time_to_string(large_inode->i_crtime,
 891                                              large_inode->i_crtime_extra));
 892                 if (inode->i_dtime)
 893                         fprintf(out, "%s dtime: 0x%08x:(%08x) -- %s", prefix,
 894                                 large_inode->i_dtime, large_inode->i_ctime_extra,
 895                                 inode_time_to_string(inode->i_dtime,
 896                                                      large_inode->i_ctime_extra));
 897         } else {
 898                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 899                         time_to_string((__s32) inode->i_ctime));
 900                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 901                         time_to_string((__s32) inode->i_atime));
 902                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 903                         time_to_string((__s32) inode->i_mtime));
 904                 if (inode->i_dtime)
 905                         fprintf(out, "%sdtime: 0x%08x -- %s", prefix,
 906                                 inode->i_dtime,
 907                                 time_to_string((__s32) inode->i_dtime));
 908         }
 909         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 910                 internal_dump_inode_extra(out, prefix, inode_num,
 911                                           (struct ext2_inode_large *) inode);
 912         dump_inode_attributes(out, inode_num);
 913         if (ext2fs_has_feature_metadata_csum(current_fs->super)) {
 914                 __u32 crc = inode->i_checksum_lo;
 915                 if (is_large_inode &&
 916                     large_inode->i_extra_isize >=
 917                                 (offsetof(struct ext2_inode_large,
 918                                           i_checksum_hi) -
 919                                  EXT2_GOOD_OLD_INODE_SIZE))
 920                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 921                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 922         }
 923
 924         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_is_fast_symlink(inode))
 925                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 926                         (int)EXT2_I_SIZE(inode), (char *)inode->i_block);
 927         else if (LINUX_S_ISLNK(inode->i_mode) &&
 928                    (inode->i_flags & EXT4_INLINE_DATA_FL))
 929                 dump_inline_symlink(out, inode_num, inode, prefix);
 930         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 931                 int major, minor;
 932                 const char *devnote;
 933
 934                 if (inode->i_block[0]) {
 935                         major = (inode->i_block[0] >> 8) & 255;
 936                         minor = inode->i_block[0] & 255;
 937                         devnote = "";
 938                 } else {
 939                         major = (inode->i_block[1] & 0xfff00) >> 8;
 940                         minor = ((inode->i_block[1] & 0xff) |
 941                                  ((inode->i_block[1] >> 12) & 0xfff00));
 942                         devnote = "(New-style) ";
 943                 }
 944                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 945                         devnote, major, minor, major, minor);
 946         } else if (do_dump_blocks) {
 947                 if (inode->i_flags & EXT4_EXTENTS_FL)
 948                         dump_extents(out, prefix, inode_num,
 949                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 950                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 951                         dump_inline_data(out, prefix, inode_num);
 952                 else
 953                         dump_blocks(out, prefix, inode_num);
 954         }
 955 }
 956
 957 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 958 {
 959         FILE    *out;
 960
 961         out = open_pager();
 962         internal_dump_inode(out, "", inode_num, inode, 1);
 963         close_pager(out);
 964 }
 965
 966 void do_stat(int argc, char *argv[])
 967 {
 968         ext2_ino_t      inode;
 969         struct ext2_inode * inode_buf;
 970
 971         if (check_fs_open(argv[0]))
 972                 return;
 973
 974         inode_buf = (struct ext2_inode *)
 975                         malloc(EXT2_INODE_SIZE(current_fs->super));
 976         if (!inode_buf) {
 977                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 978                 return;
 979         }
 980
 981         if (common_inode_args_process(argc, argv, &inode, 0)) {
 982                 free(inode_buf);
 983                 return;
 984         }
 985
 986         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 987                                         EXT2_INODE_SIZE(current_fs->super))) {
 988                 free(inode_buf);
 989                 return;
 990         }
 991
 992         dump_inode(inode, inode_buf);
 993         free(inode_buf);
 994         return;
 995 }
 996
 997 void do_dump_extents(int argc, char **argv)
 998 {
 999         struct ext2_inode inode;
1000         ext2_ino_t      ino;
1001         FILE            *out;
1002         int             c, flags = 0;
1003         int             logical_width;
1004         int             physical_width;
1005
1006         reset_getopt();
1007         while ((c = getopt(argc, argv, "nl")) != EOF) {
1008                 switch (c) {
1009                 case 'n':
1010                         flags |= DUMP_NODE_EXTENTS;
1011                         break;
1012                 case 'l':
1013                         flags |= DUMP_LEAF_EXTENTS;
1014                         break;
1015                 }
1016         }
1017
1018         if (argc != optind + 1) {
1019                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
1020                 return;
1021         }
1022
1023         if (flags == 0)
1024                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
1025         flags |= DUMP_EXTENT_TABLE;
1026
1027         if (check_fs_open(argv[0]))
1028                 return;
1029
1030         ino = string_to_inode(argv[optind]);
1031         if (ino == 0)
1032                 return;
1033
1034         if (debugfs_read_inode(ino, &inode, argv[0]))
1035                 return;
1036
1037         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
1038                 fprintf(stderr, "%s: does not uses extent block maps\n",
1039                         argv[optind]);
1040                 return;
1041         }
1042
1043         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
1044                                   current_fs->blocksize) + 1;
1045         if (logical_width < 5)
1046                 logical_width = 5;
1047         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
1048         if (physical_width < 5)
1049                 physical_width = 5;
1050
1051         out = open_pager();
1052         dump_extents(out, "", ino, flags, logical_width, physical_width);
1053         close_pager(out);
1054         return;
1055 }
1056
1057 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
1058                              blk64_t *blocknr,
1059                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1060                              blk64_t ref_block EXT2FS_ATTR((unused)),
1061                              int ref_offset EXT2FS_ATTR((unused)),
1062                              void *private EXT2FS_ATTR((unused)))
1063 {
1064         printf("%llu ", *blocknr);
1065         return 0;
1066 }
1067
1068 void do_blocks(int argc, char *argv[])
1069 {
1070         ext2_ino_t      inode;
1071
1072         if (check_fs_open(argv[0]))
1073                 return;
1074
1075         if (common_inode_args_process(argc, argv, &inode, 0)) {
1076                 return;
1077         }
1078
1079         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1080                               print_blocks_proc, NULL);
1081         fputc('\n', stdout);
1082         return;
1083 }
1084
1085 void do_chroot(int argc, char *argv[])
1086 {
1087         ext2_ino_t inode;
1088         int retval;
1089
1090         if (common_inode_args_process(argc, argv, &inode, 0))
1091                 return;
1092
1093         retval = ext2fs_check_directory(current_fs, inode);
1094         if (retval)  {
1095                 com_err(argv[1], retval, 0);
1096                 return;
1097         }
1098         root = inode;
1099 }
1100
1101 #ifndef READ_ONLY
1102 void do_clri(int argc, char *argv[])
1103 {
1104         ext2_ino_t inode;
1105         struct ext2_inode inode_buf;
1106
1107         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1108                 return;
1109
1110         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1111                 return;
1112         memset(&inode_buf, 0, sizeof(inode_buf));
1113         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1114                 return;
1115 }
1116
1117 void do_freei(int argc, char *argv[])
1118 {
1119         unsigned int    len = 1;
1120         int             err = 0;
1121         ext2_ino_t      inode;
1122
1123         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1124                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1125                 return;
1126         if (check_fs_read_write(argv[0]))
1127                 return;
1128
1129         inode = string_to_inode(argv[1]);
1130         if (!inode)
1131                 return;
1132
1133         if (argc == 3) {
1134                 len = parse_ulong(argv[2], argv[0], "length", &err);
1135                 if (err)
1136                         return;
1137         }
1138
1139         if (len == 1 &&
1140             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1141                 com_err(argv[0], 0, "Warning: inode already clear");
1142         while (len-- > 0)
1143                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1144         ext2fs_mark_ib_dirty(current_fs);
1145 }
1146
1147 void do_seti(int argc, char *argv[])
1148 {
1149         unsigned int    len = 1;
1150         int             err = 0;
1151         ext2_ino_t      inode;
1152
1153         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1154                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1155                 return;
1156         if (check_fs_read_write(argv[0]))
1157                 return;
1158
1159         inode = string_to_inode(argv[1]);
1160         if (!inode)
1161                 return;
1162
1163         if (argc == 3) {
1164                 len = parse_ulong(argv[2], argv[0], "length", &err);
1165                 if (err)
1166                         return;
1167         }
1168
1169         if ((len == 1) &&
1170             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1171                 com_err(argv[0], 0, "Warning: inode already set");
1172         while (len-- > 0)
1173                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1174         ext2fs_mark_ib_dirty(current_fs);
1175 }
1176 #endif /* READ_ONLY */
1177
1178 void do_testi(int argc, char *argv[])
1179 {
1180         ext2_ino_t inode;
1181
1182         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1183                 return;
1184
1185         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1186                 printf("Inode %u is marked in use\n", inode);
1187         else
1188                 printf("Inode %u is not in use\n", inode);
1189 }
1190
1191 #ifndef READ_ONLY
1192 void do_freeb(int argc, char *argv[])
1193 {
1194         blk64_t block;
1195         blk64_t count = 1;
1196
1197         if (common_block_args_process(argc, argv, &block, &count))
1198                 return;
1199         if (check_fs_read_write(argv[0]))
1200                 return;
1201         while (count-- > 0) {
1202                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1203                         com_err(argv[0], 0, "Warning: block %llu already clear",
1204                                 block);
1205                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1206                 block++;
1207         }
1208         ext2fs_mark_bb_dirty(current_fs);
1209 }
1210
1211 void do_setb(int argc, char *argv[])
1212 {
1213         blk64_t block;
1214         blk64_t count = 1;
1215
1216         if (common_block_args_process(argc, argv, &block, &count))
1217                 return;
1218         if (check_fs_read_write(argv[0]))
1219                 return;
1220         while (count-- > 0) {
1221                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1222                         com_err(argv[0], 0, "Warning: block %llu already set",
1223                                 block);
1224                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1225                 block++;
1226         }
1227         ext2fs_mark_bb_dirty(current_fs);
1228 }
1229 #endif /* READ_ONLY */
1230
1231 void do_testb(int argc, char *argv[])
1232 {
1233         blk64_t block;
1234         blk64_t count = 1;
1235
1236         if (common_block_args_process(argc, argv, &block, &count))
1237                 return;
1238         while (count-- > 0) {
1239                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1240                         printf("Block %llu marked in use\n", block);
1241                 else
1242                         printf("Block %llu not in use\n", block);
1243                 block++;
1244         }
1245 }
1246
1247 #ifndef READ_ONLY
1248 static void modify_u8(char *com, const char *prompt,
1249                       const char *format, __u8 *val)
1250 {
1251         char buf[200];
1252         unsigned long v;
1253         char *tmp;
1254
1255         sprintf(buf, format, *val);
1256         printf("%30s    [%s] ", prompt, buf);
1257         if (!fgets(buf, sizeof(buf), stdin))
1258                 return;
1259         if (buf[strlen (buf) - 1] == '\n')
1260                 buf[strlen (buf) - 1] = '\0';
1261         if (!buf[0])
1262                 return;
1263         v = strtoul(buf, &tmp, 0);
1264         if (*tmp)
1265                 com_err(com, 0, "Bad value - %s", buf);
1266         else
1267                 *val = v;
1268 }
1269
1270 static void modify_u16(char *com, const char *prompt,
1271                        const char *format, __u16 *val)
1272 {
1273         char buf[200];
1274         unsigned long v;
1275         char *tmp;
1276
1277         sprintf(buf, format, *val);
1278         printf("%30s    [%s] ", prompt, buf);
1279         if (!fgets(buf, sizeof(buf), stdin))
1280                 return;
1281         if (buf[strlen (buf) - 1] == '\n')
1282                 buf[strlen (buf) - 1] = '\0';
1283         if (!buf[0])
1284                 return;
1285         v = strtoul(buf, &tmp, 0);
1286         if (*tmp)
1287                 com_err(com, 0, "Bad value - %s", buf);
1288         else
1289                 *val = v;
1290 }
1291
1292 static void modify_u32(char *com, const char *prompt,
1293                        const char *format, __u32 *val)
1294 {
1295         char buf[200];
1296         unsigned long v;
1297         char *tmp;
1298
1299         sprintf(buf, format, *val);
1300         printf("%30s    [%s] ", prompt, buf);
1301         if (!fgets(buf, sizeof(buf), stdin))
1302                 return;
1303         if (buf[strlen (buf) - 1] == '\n')
1304                 buf[strlen (buf) - 1] = '\0';
1305         if (!buf[0])
1306                 return;
1307         v = strtoul(buf, &tmp, 0);
1308         if (*tmp)
1309                 com_err(com, 0, "Bad value - %s", buf);
1310         else
1311                 *val = v;
1312 }
1313
1314
1315 void do_modify_inode(int argc, char *argv[])
1316 {
1317         struct ext2_inode inode;
1318         ext2_ino_t      inode_num;
1319         int             i;
1320         unsigned char   *frag, *fsize;
1321         char            buf[80];
1322         int             os;
1323         const char      *hex_format = "0x%x";
1324         const char      *octal_format = "0%o";
1325         const char      *decimal_format = "%d";
1326         const char      *unsignedlong_format = "%lu";
1327
1328         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1329                 return;
1330
1331         os = current_fs->super->s_creator_os;
1332
1333         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1334                 return;
1335
1336         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1337         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1338         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1339         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1340         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1341         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1342         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1343         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1344         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1345         if (os == EXT2_OS_LINUX)
1346                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1347                            &inode.osd2.linux2.l_i_blocks_hi);
1348         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1349         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1350         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1351 #if 0
1352         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1353 #endif
1354         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1355
1356         modify_u32(argv[0], "High 32bits of size", decimal_format,
1357                    &inode.i_size_high);
1358
1359         if (os == EXT2_OS_HURD)
1360                 modify_u32(argv[0], "Translator Block",
1361                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1362
1363         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1364         switch (os) {
1365             case EXT2_OS_HURD:
1366                 frag = &inode.osd2.hurd2.h_i_frag;
1367                 fsize = &inode.osd2.hurd2.h_i_fsize;
1368                 break;
1369             default:
1370                 frag = fsize = 0;
1371         }
1372         if (frag)
1373                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1374         if (fsize)
1375                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1376
1377         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1378                 sprintf(buf, "Direct Block #%d", i);
1379                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1380         }
1381         modify_u32(argv[0], "Indirect Block", decimal_format,
1382                     &inode.i_block[EXT2_IND_BLOCK]);
1383         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1384                     &inode.i_block[EXT2_DIND_BLOCK]);
1385         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1386                     &inode.i_block[EXT2_TIND_BLOCK]);
1387         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1388                 return;
1389 }
1390 #endif /* READ_ONLY */
1391
1392 void do_change_working_dir(int argc, char *argv[])
1393 {
1394         ext2_ino_t      inode;
1395         int             retval;
1396
1397         if (common_inode_args_process(argc, argv, &inode, 0))
1398                 return;
1399
1400         retval = ext2fs_check_directory(current_fs, inode);
1401         if (retval) {
1402                 com_err(argv[1], retval, 0);
1403                 return;
1404         }
1405         cwd = inode;
1406         return;
1407 }
1408
1409 void do_print_working_directory(int argc, char *argv[])
1410 {
1411         int     retval;
1412         char    *pathname = NULL;
1413
1414         if (common_args_process(argc, argv, 1, 1,
1415                                 "print_working_directory", "", 0))
1416                 return;
1417
1418         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1419         if (retval) {
1420                 com_err(argv[0], retval,
1421                         "while trying to get pathname of cwd");
1422         }
1423         printf("[pwd]   INODE: %6u  PATH: %s\n",
1424                cwd, pathname ? pathname : "NULL");
1425         if (pathname) {
1426                 free(pathname);
1427                 pathname = NULL;
1428         }
1429         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1430         if (retval) {
1431                 com_err(argv[0], retval,
1432                         "while trying to get pathname of root");
1433         }
1434         printf("[root]  INODE: %6u  PATH: %s\n",
1435                root, pathname ? pathname : "NULL");
1436         if (pathname) {
1437                 free(pathname);
1438                 pathname = NULL;
1439         }
1440         return;
1441 }
1442
1443 #ifndef READ_ONLY
1444 static void make_link(char *sourcename, char *destname)
1445 {
1446         ext2_ino_t      ino;
1447         struct ext2_inode inode;
1448         int             retval;
1449         ext2_ino_t      dir;
1450         char            *dest, *cp, *base_name;
1451
1452         /*
1453          * Get the source inode
1454          */
1455         ino = string_to_inode(sourcename);
1456         if (!ino)
1457                 return;
1458         base_name = strrchr(sourcename, '/');
1459         if (base_name)
1460                 base_name++;
1461         else
1462                 base_name = sourcename;
1463         /*
1464          * Figure out the destination.  First see if it exists and is
1465          * a directory.
1466          */
1467         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1468                 dest = base_name;
1469         else {
1470                 /*
1471                  * OK, it doesn't exist.  See if it is
1472                  * '<dir>/basename' or 'basename'
1473                  */
1474                 cp = strrchr(destname, '/');
1475                 if (cp) {
1476                         *cp = 0;
1477                         dir = string_to_inode(destname);
1478                         if (!dir)
1479                                 return;
1480                         dest = cp+1;
1481                 } else {
1482                         dir = cwd;
1483                         dest = destname;
1484                 }
1485         }
1486
1487         if (debugfs_read_inode(ino, &inode, sourcename))
1488                 return;
1489
1490         retval = ext2fs_link(current_fs, dir, dest, ino,
1491                              ext2_file_type(inode.i_mode));
1492         if (retval)
1493                 com_err("make_link", retval, 0);
1494         return;
1495 }
1496
1497
1498 void do_link(int argc, char *argv[])
1499 {
1500         if (common_args_process(argc, argv, 3, 3, "link",
1501                                 "<source file> <dest_name>", CHECK_FS_RW))
1502                 return;
1503
1504         make_link(argv[1], argv[2]);
1505 }
1506
1507 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1508                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1509                             blk64_t ref_block EXT2FS_ATTR((unused)),
1510                             int ref_offset EXT2FS_ATTR((unused)),
1511                             void *private EXT2FS_ATTR((unused)))
1512 {
1513         blk64_t block;
1514
1515         block = *blocknr;
1516         ext2fs_block_alloc_stats2(fs, block, +1);
1517         return 0;
1518 }
1519
1520 void do_undel(int argc, char *argv[])
1521 {
1522         ext2_ino_t      ino;
1523         struct ext2_inode inode;
1524
1525         if (common_args_process(argc, argv, 2, 3, "undelete",
1526                                 "<inode_num> [dest_name]",
1527                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1528                 return;
1529
1530         ino = string_to_inode(argv[1]);
1531         if (!ino)
1532                 return;
1533
1534         if (debugfs_read_inode(ino, &inode, argv[1]))
1535                 return;
1536
1537         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1538                 com_err(argv[1], 0, "Inode is not marked as deleted");
1539                 return;
1540         }
1541
1542         /*
1543          * XXX this function doesn't handle changing the links count on the
1544          * parent directory when undeleting a directory.
1545          */
1546         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1547         inode.i_dtime = 0;
1548
1549         if (debugfs_write_inode(ino, &inode, argv[0]))
1550                 return;
1551
1552         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1553                               mark_blocks_proc, NULL);
1554
1555         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1556
1557         if (argc > 2)
1558                 make_link(argv[1], argv[2]);
1559 }
1560
1561 static void unlink_file_by_name(char *filename)
1562 {
1563         int             retval;
1564         ext2_ino_t      dir;
1565         char            *base_name;
1566
1567         base_name = strrchr(filename, '/');
1568         if (base_name) {
1569                 *base_name++ = '\0';
1570                 dir = string_to_inode(filename);
1571                 if (!dir)
1572                         return;
1573         } else {
1574                 dir = cwd;
1575                 base_name = filename;
1576         }
1577         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1578         if (retval)
1579                 com_err("unlink_file_by_name", retval, 0);
1580         return;
1581 }
1582
1583 void do_unlink(int argc, char *argv[])
1584 {
1585         if (common_args_process(argc, argv, 2, 2, "link",
1586                                 "<pathname>", CHECK_FS_RW))
1587                 return;
1588
1589         unlink_file_by_name(argv[1]);
1590 }
1591
1592 void do_copy_inode(int argc, char *argv[])
1593 {
1594         ext2_ino_t      src_ino, dest_ino;
1595         unsigned char   buf[4096];
1596
1597         if (common_args_process(argc, argv, 3, 3, "copy_inode",
1598                                 "<source file> <dest_name>", CHECK_FS_RW))
1599                 return;
1600
1601         src_ino = string_to_inode(argv[1]);
1602         if (!src_ino)
1603                 return;
1604
1605         dest_ino = string_to_inode(argv[2]);
1606         if (!dest_ino)
1607                 return;
1608
1609         if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
1610                                     argv[0], sizeof(buf)))
1611                 return;
1612
1613         if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
1614                                      argv[0], sizeof(buf)))
1615                 return;
1616 }
1617
1618 #endif /* READ_ONLY */
1619
1620 void do_find_free_block(int argc, char *argv[])
1621 {
1622         blk64_t free_blk, goal, first_free = 0;
1623         int             count;
1624         errcode_t       retval;
1625         char            *tmp;
1626
1627         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1628                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1629                 return;
1630         }
1631         if (check_fs_open(argv[0]))
1632                 return;
1633
1634         if (argc > 1) {
1635                 count = strtol(argv[1],&tmp,0);
1636                 if (*tmp) {
1637                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1638                         return;
1639                 }
1640         } else
1641                 count = 1;
1642
1643         if (argc > 2) {
1644                 goal = strtol(argv[2], &tmp, 0);
1645                 if (*tmp) {
1646                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1647                         return;
1648                 }
1649         }
1650         else
1651                 goal = current_fs->super->s_first_data_block;
1652
1653         printf("Free blocks found: ");
1654         free_blk = goal - 1;
1655         while (count-- > 0) {
1656                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1657                                            &free_blk);
1658                 if (first_free) {
1659                         if (first_free == free_blk)
1660                                 break;
1661                 } else
1662                         first_free = free_blk;
1663                 if (retval) {
1664                         com_err("ext2fs_new_block", retval, 0);
1665                         return;
1666                 } else
1667                         printf("%llu ", free_blk);
1668         }
1669         printf("\n");
1670 }
1671
1672 void do_find_free_inode(int argc, char *argv[])
1673 {
1674         ext2_ino_t      free_inode, dir;
1675         int             mode;
1676         int             retval;
1677         char            *tmp;
1678
1679         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1680                 com_err(argv[0], 0, "Usage: find_free_inode [dir [mode]]");
1681                 return;
1682         }
1683         if (check_fs_open(argv[0]))
1684                 return;
1685
1686         if (argc > 1) {
1687                 dir = strtol(argv[1], &tmp, 0);
1688                 if (*tmp) {
1689                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1690                         return;
1691                 }
1692         }
1693         else
1694                 dir = root;
1695         if (argc > 2) {
1696                 mode = strtol(argv[2], &tmp, 0);
1697                 if (*tmp) {
1698                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1699                         return;
1700                 }
1701         } else
1702                 mode = 010755;
1703
1704         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1705         if (retval)
1706                 com_err("ext2fs_new_inode", retval, 0);
1707         else
1708                 printf("Free inode found: %u\n", free_inode);
1709 }
1710
1711 #ifndef READ_ONLY
1712 void do_write(int argc, char *argv[])
1713 {
1714         errcode_t       retval;
1715
1716         if (common_args_process(argc, argv, 3, 3, "write",
1717                                 "<native file> <new file>", CHECK_FS_RW))
1718                 return;
1719
1720         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1721         if (retval)
1722                 com_err(argv[0], retval, 0);
1723 }
1724
1725 void do_mknod(int argc, char *argv[])
1726 {
1727         unsigned long   major, minor;
1728         errcode_t       retval;
1729         int             nr;
1730         struct stat     st;
1731
1732         if (check_fs_open(argv[0]))
1733                 return;
1734         if (argc < 3 || argv[2][1]) {
1735         usage:
1736                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1737                 return;
1738         }
1739
1740         minor = major = 0;
1741         switch (argv[2][0]) {
1742                 case 'p':
1743                         st.st_mode = S_IFIFO;
1744                         nr = 3;
1745                         break;
1746                 case 'c':
1747                         st.st_mode = S_IFCHR;
1748                         nr = 5;
1749                         break;
1750                 case 'b':
1751                         st.st_mode = S_IFBLK;
1752                         nr = 5;
1753                         break;
1754                 default:
1755                         nr = 0;
1756         }
1757
1758         if (nr == 5) {
1759                 major = strtoul(argv[3], argv+3, 0);
1760                 minor = strtoul(argv[4], argv+4, 0);
1761                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1762                         nr = 0;
1763         }
1764
1765         if (argc != nr)
1766                 goto usage;
1767
1768         st.st_rdev = makedev(major, minor);
1769         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1770         if (retval)
1771                 com_err(argv[0], retval, 0);
1772 }
1773
1774 void do_mkdir(int argc, char *argv[])
1775 {
1776         errcode_t retval;
1777
1778         if (common_args_process(argc, argv, 2, 2, "mkdir",
1779                                 "<filename>", CHECK_FS_RW))
1780                 return;
1781
1782         retval = do_mkdir_internal(current_fs, cwd, argv[1], root);
1783         if (retval)
1784                 com_err(argv[0], retval, 0);
1785
1786 }
1787
1788 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1789                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1790                                blk64_t ref_block EXT2FS_ATTR((unused)),
1791                                int ref_offset EXT2FS_ATTR((unused)),
1792                                void *private)
1793 {
1794         blk64_t block = *blocknr;
1795         blk64_t *last_cluster = (blk64_t *)private;
1796         blk64_t cluster = EXT2FS_B2C(fs, block);
1797
1798         if (cluster == *last_cluster)
1799                 return 0;
1800
1801         *last_cluster = cluster;
1802
1803         ext2fs_block_alloc_stats2(fs, block, -1);
1804         return 0;
1805 }
1806
1807 static void kill_file_by_inode(ext2_ino_t inode)
1808 {
1809         struct ext2_inode inode_buf;
1810
1811         if (debugfs_read_inode(inode, &inode_buf, 0))
1812                 return;
1813         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1814         if (debugfs_write_inode(inode, &inode_buf, 0))
1815                 return;
1816         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1817                 blk64_t last_cluster = 0;
1818                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1819                                       NULL, release_blocks_proc, &last_cluster);
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         struct ext2_inode_large *inode;
2098         ext2_ino_t      ino;
2099         unsigned char   *buf;
2100         errcode_t       err;
2101         unsigned int    isize, size, offset = 0;
2102         int             c, mode = 0;
2103
2104         reset_getopt();
2105         while ((c = getopt (argc, argv, "bex")) != EOF) {
2106                 if (mode || c == '?') {
2107                         com_err(argv[0], 0,
2108                                 "Usage: inode_dump [-b]|[-e] <file>");
2109                         return;
2110                 }
2111                 mode = c;
2112         }
2113         if (optind != argc-1)
2114                 return;
2115
2116         if (check_fs_open(argv[0]))
2117                 return;
2118
2119         ino = string_to_inode(argv[optind]);
2120         if (!ino)
2121                 return;
2122
2123         isize = EXT2_INODE_SIZE(current_fs->super);
2124         err = ext2fs_get_mem(isize, &buf);
2125         if (err) {
2126                 com_err(argv[0], err, "while allocating memory");
2127                 return;
2128         }
2129
2130         err = ext2fs_read_inode_full(current_fs, ino,
2131                                      (struct ext2_inode *)buf, isize);
2132         if (err) {
2133                 com_err(argv[0], err, "while reading inode %u", ino);
2134                 goto err;
2135         }
2136
2137         inode = (struct ext2_inode_large *) buf;
2138         size = isize;
2139         switch (mode) {
2140         case 'b':
2141                 offset = ((char *) (&inode->i_block)) - ((char *) buf);
2142                 size = sizeof(inode->i_block);
2143                 break;
2144         case 'x':
2145         case 'e':
2146                 if (size <= EXT2_GOOD_OLD_INODE_SIZE) {
2147                         com_err(argv[0], 0, "No extra space in inode");
2148                         goto err;
2149                 }
2150                 offset = EXT2_GOOD_OLD_INODE_SIZE + inode->i_extra_isize;
2151                 if (offset > size)
2152                         goto err;
2153                 size -= offset;
2154                 break;
2155         }
2156         if (mode == 'x')
2157                 raw_inode_xattr_dump(stdout, buf + offset, size);
2158         else
2159                 do_byte_hexdump(stdout, buf + offset, size);
2160 err:
2161         ext2fs_free_mem(&buf);
2162 }
2163
2164 #ifndef READ_ONLY
2165 void do_set_current_time(int argc, char *argv[])
2166 {
2167         __s64 now;
2168
2169         if (common_args_process(argc, argv, 2, 2, argv[0],
2170                                 "<time>", 0))
2171                 return;
2172
2173         now = string_to_time(argv[1]);
2174         if (now == -1) {
2175                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2176                         argv[1]);
2177                 return;
2178
2179         } else {
2180                 printf("Setting current time to %s\n", time_to_string(now));
2181                 current_fs->now = now;
2182         }
2183 }
2184 #endif /* READ_ONLY */
2185
2186 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2187 {
2188         int compat, bit, ret;
2189         unsigned int feature_mask;
2190
2191         if (name) {
2192                 if (feature_type == E2P_FS_FEATURE)
2193                         ret = e2p_string2feature(name, &compat, &feature_mask);
2194                 else
2195                         ret = e2p_jrnl_string2feature(name, &compat,
2196                                                       &feature_mask);
2197                 if (ret)
2198                         return ret;
2199
2200                 if (!(supp[compat] & feature_mask))
2201                         return 1;
2202         } else {
2203                 for (compat = 0; compat < 3; compat++) {
2204                         for (bit = 0, feature_mask = 1; bit < 32;
2205                              bit++, feature_mask <<= 1) {
2206                                 if (supp[compat] & feature_mask) {
2207                                         if (feature_type == E2P_FS_FEATURE)
2208                                                 fprintf(stdout, " %s",
2209                                                 e2p_feature2string(compat,
2210                                                 feature_mask));
2211                                         else
2212                                                 fprintf(stdout, " %s",
2213                                                 e2p_jrnl_feature2string(compat,
2214                                                 feature_mask));
2215                                 }
2216                         }
2217                 }
2218                 fprintf(stdout, "\n");
2219         }
2220
2221         return 0;
2222 }
2223
2224 void do_supported_features(int argc, char *argv[])
2225 {
2226         int     ret;
2227         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2228                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2229                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2230         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2231                                  JFS_KNOWN_INCOMPAT_FEATURES,
2232                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2233
2234         if (argc > 1) {
2235                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2236                 if (ret) {
2237                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2238                                                 argv[1]);
2239                 }
2240                 if (ret)
2241                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2242                 else
2243                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2244         } else {
2245                 fprintf(stdout, "Supported features:");
2246                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2247                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2248         }
2249 }
2250
2251 #ifndef READ_ONLY
2252 void do_punch(int argc, char *argv[])
2253 {
2254         ext2_ino_t      ino;
2255         blk64_t         start, end;
2256         int             err;
2257         errcode_t       errcode;
2258
2259         if (common_args_process(argc, argv, 3, 4, argv[0],
2260                                 "<file> start_blk [end_blk]",
2261                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2262                 return;
2263
2264         ino = string_to_inode(argv[1]);
2265         if (!ino)
2266                 return;
2267         err = strtoblk(argv[0], argv[2], "logical block", &start);
2268         if (err)
2269                 return;
2270         if (argc == 4) {
2271                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2272                 if (err)
2273                         return;
2274         } else
2275                 end = ~0;
2276
2277         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2278
2279         if (errcode) {
2280                 com_err(argv[0], errcode,
2281                         "while truncating inode %u from %llu to %llu\n", ino,
2282                         (unsigned long long) start, (unsigned long long) end);
2283                 return;
2284         }
2285 }
2286
2287 void do_fallocate(int argc, char *argv[])
2288 {
2289         ext2_ino_t      ino;
2290         blk64_t         start, end;
2291         int             err;
2292         errcode_t       errcode;
2293
2294         if (common_args_process(argc, argv, 3, 4, argv[0],
2295                                 "<file> start_blk [end_blk]",
2296                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2297                 return;
2298
2299         ino = string_to_inode(argv[1]);
2300         if (!ino)
2301                 return;
2302         err = strtoblk(argv[0], argv[2], "logical block", &start);
2303         if (err)
2304                 return;
2305         if (argc == 4) {
2306                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2307                 if (err)
2308                         return;
2309         } else
2310                 end = ~0;
2311
2312         errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
2313                                    ino, NULL, ~0ULL, start, end - start + 1);
2314
2315         if (errcode) {
2316                 com_err(argv[0], errcode,
2317                         "while fallocating inode %u from %llu to %llu\n", ino,
2318                         (unsigned long long) start, (unsigned long long) end);
2319                 return;
2320         }
2321 }
2322 #endif /* READ_ONLY */
2323
2324 void do_symlink(int argc, char *argv[])
2325 {
2326         errcode_t       retval;
2327
2328         if (common_args_process(argc, argv, 3, 3, "symlink",
2329                                 "<filename> <target>", CHECK_FS_RW))
2330                 return;
2331
2332         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2333         if (retval)
2334                 com_err(argv[0], retval, 0);
2335
2336 }
2337
2338 #if CONFIG_MMP
2339 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2340 {
2341         struct mmp_struct *mmp_s;
2342         unsigned long long mmp_block;
2343         time_t t;
2344         errcode_t retval = 0;
2345
2346         if (check_fs_open(argv[0]))
2347                 return;
2348
2349         if (argc > 1) {
2350                 char *end = NULL;
2351                 mmp_block = strtoull(argv[1], &end, 0);
2352                 if (end == argv[0] || mmp_block == 0) {
2353                         fprintf(stderr, "%s: invalid MMP block '%s' given\n",
2354                                 argv[0], argv[1]);
2355                         return;
2356                 }
2357         } else {
2358                 mmp_block = current_fs->super->s_mmp_block;
2359         }
2360
2361         if (mmp_block == 0) {
2362                 fprintf(stderr, "%s: MMP: not active on this filesystem.\n",
2363                         argv[0]);
2364                 return;
2365         }
2366
2367         if (current_fs->mmp_buf == NULL) {
2368                 retval = ext2fs_get_mem(current_fs->blocksize,
2369                                         &current_fs->mmp_buf);
2370                 if (retval) {
2371                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2372                         return;
2373                 }
2374         }
2375
2376         mmp_s = current_fs->mmp_buf;
2377
2378         retval = ext2fs_mmp_read(current_fs, mmp_block, current_fs->mmp_buf);
2379         if (retval) {
2380                 com_err(argv[0], retval, "reading MMP block %llu.\n",
2381                         mmp_block);
2382                 return;
2383         }
2384
2385         t = mmp_s->mmp_time;
2386         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2387         fprintf(stdout, "update_interval: %d\n",
2388                 current_fs->super->s_mmp_update_interval);
2389         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2390         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2391         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2392         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2393         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2394         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2395         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2396 }
2397 #else
2398 void do_dump_mmp(int argc EXT2FS_ATTR((unused)),
2399                  char *argv[] EXT2FS_ATTR((unused)))
2400 {
2401         fprintf(stdout, "MMP is unsupported, please recompile with "
2402                         "--enable-mmp\n");
2403 }
2404 #endif
2405
2406 static int source_file(const char *cmd_file, int ss_idx)
2407 {
2408         FILE            *f;
2409         char            buf[BUFSIZ];
2410         char            *cp;
2411         int             exit_status = 0;
2412         int             retval;
2413
2414         if (strcmp(cmd_file, "-") == 0)
2415                 f = stdin;
2416         else {
2417                 f = fopen(cmd_file, "r");
2418                 if (!f) {
2419                         perror(cmd_file);
2420                         exit(1);
2421                 }
2422         }
2423         fflush(stdout);
2424         fflush(stderr);
2425         setbuf(stdout, NULL);
2426         setbuf(stderr, NULL);
2427         while (!feof(f)) {
2428                 if (fgets(buf, sizeof(buf), f) == NULL)
2429                         break;
2430                 cp = strchr(buf, '\n');
2431                 if (cp)
2432                         *cp = 0;
2433                 cp = strchr(buf, '\r');
2434                 if (cp)
2435                         *cp = 0;
2436                 printf("debugfs: %s\n", buf);
2437                 retval = ss_execute_line(ss_idx, buf);
2438                 if (retval) {
2439                         ss_perror(ss_idx, retval, buf);
2440                         exit_status++;
2441                 }
2442         }
2443         if (f != stdin)
2444                 fclose(f);
2445         return exit_status;
2446 }
2447
2448 int main(int argc, char **argv)
2449 {
2450         int             retval;
2451         const char      *usage =
2452                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2453                 "[-R request] [-d data_source_device] [-i] [-n] [-D] [-V] ["
2454 #ifndef READ_ONLY
2455                 "[-w] [-z undo_file] "
2456 #endif
2457                 "[-c]] [device]";
2458         int             c;
2459         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2460         char            *request = 0;
2461         int             exit_status = 0;
2462         char            *cmd_file = 0;
2463         blk64_t         superblock = 0;
2464         blk64_t         blocksize = 0;
2465         int             catastrophic = 0;
2466         char            *data_filename = 0;
2467 #ifdef READ_ONLY
2468         const char      *opt_string = "nicR:f:b:s:Vd:D";
2469 #else
2470         const char      *opt_string = "niwcR:f:b:s:Vd:Dz:";
2471         char            *undo_file = NULL;
2472 #endif
2473 #ifdef CONFIG_JBD_DEBUG
2474         char            *jbd_debug;
2475 #endif
2476
2477         if (debug_prog_name == 0)
2478 #ifdef READ_ONLY
2479                 debug_prog_name = "rdebugfs";
2480 #else
2481                 debug_prog_name = "debugfs";
2482 #endif
2483         add_error_table(&et_ext2_error_table);
2484         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2485                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2486
2487 #ifdef CONFIG_JBD_DEBUG
2488         jbd_debug = ss_safe_getenv("DEBUGFS_JBD_DEBUG");
2489         if (jbd_debug) {
2490                 int res = sscanf(jbd_debug, "%d", &journal_enable_debug);
2491
2492                 if (res != 1) {
2493                         fprintf(stderr,
2494                                 "DEBUGFS_JBD_DEBUG \"%s\" not an integer\n\n",
2495                                 jbd_debug);
2496                         exit(1);
2497                 }
2498         }
2499 #endif
2500         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2501                 switch (c) {
2502                 case 'R':
2503                         request = optarg;
2504                         break;
2505                 case 'f':
2506                         cmd_file = optarg;
2507                         break;
2508                 case 'd':
2509                         data_filename = optarg;
2510                         break;
2511                 case 'i':
2512                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2513                         break;
2514                 case 'n':
2515                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2516                         break;
2517 #ifndef READ_ONLY
2518                 case 'w':
2519                         open_flags |= EXT2_FLAG_RW;
2520                         break;
2521 #endif
2522                 case 'D':
2523                         open_flags |= EXT2_FLAG_DIRECT_IO;
2524                         break;
2525                 case 'b':
2526                         blocksize = parse_ulong(optarg, argv[0],
2527                                                 "block size", 0);
2528                         break;
2529                 case 's':
2530                         retval = strtoblk(argv[0], optarg,
2531                                           "superblock block number",
2532                                           &superblock);
2533                         if (retval)
2534                                 return 1;
2535                         break;
2536                 case 'c':
2537                         catastrophic = 1;
2538                         break;
2539                 case 'V':
2540                         /* Print version number and exit */
2541                         fprintf(stderr, "\tUsing %s\n",
2542                                 error_message(EXT2_ET_BASE));
2543                         exit(0);
2544                 case 'z':
2545                         undo_file = optarg;
2546                         break;
2547                 default:
2548                         com_err(argv[0], 0, usage, debug_prog_name);
2549                         return 1;
2550                 }
2551         }
2552         if (optind < argc)
2553                 open_filesystem(argv[optind], open_flags,
2554                                 superblock, blocksize, catastrophic,
2555                                 data_filename, undo_file);
2556
2557         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2558                                        &debug_cmds, &retval);
2559         if (retval) {
2560                 ss_perror(sci_idx, retval, "creating invocation");
2561                 exit(1);
2562         }
2563         ss_get_readline(sci_idx);
2564
2565         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2566         if (retval) {
2567                 ss_perror(sci_idx, retval, "adding standard requests");
2568                 exit (1);
2569         }
2570         if (extra_cmds)
2571                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2572         if (retval) {
2573                 ss_perror(sci_idx, retval, "adding extra requests");
2574                 exit (1);
2575         }
2576         if (request) {
2577                 retval = 0;
2578                 retval = ss_execute_line(sci_idx, request);
2579                 if (retval) {
2580                         ss_perror(sci_idx, retval, request);
2581                         exit_status++;
2582                 }
2583         } else if (cmd_file) {
2584                 exit_status = source_file(cmd_file, sci_idx);
2585         } else {
2586                 ss_listen(sci_idx);
2587         }
2588
2589         ss_delete_invocation(sci_idx);
2590
2591         if (current_fs)
2592                 close_filesystem();
2593
2594         remove_error_table(&et_ext2_error_table);
2595         return exit_status;
2596 }