debugfs/debugfs.c

   1 /*
   2  * debugfs.c --- a program which allows you to attach an ext2fs
   3  * filesystem and play with it.
   4  *
   5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
   6  * under the terms of the GNU Public License.
   7  *
   8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
   9  */
  10
  11 #include "config.h"
  12 #include <stdio.h>
  13 #include <unistd.h>
  14 #include <stdlib.h>
  15 #include <ctype.h>
  16 #include <string.h>
  17 #include <time.h>
  18 #include <libgen.h>
  19 #ifdef HAVE_GETOPT_H
  20 #include <getopt.h>
  21 #else
  22 extern int optind;
  23 extern char *optarg;
  24 #endif
  25 #ifdef HAVE_ERRNO_H
  26 #include <errno.h>
  27 #endif
  28 #include <fcntl.h>
  29 #ifdef HAVE_SYS_SYSMACROS_H
  30 #include <sys/sysmacros.h>
  31 #endif
  32
  33 #include "debugfs.h"
  34 #include "uuid/uuid.h"
  35 #include "e2p/e2p.h"
  36
  37 #include <ext2fs/ext2_ext_attr.h>
  38
  39 #include "../version.h"
  40 #include "jfs_user.h"
  41 #include "support/plausible.h"
  42
  43 #ifndef BUFSIZ
  44 #define BUFSIZ 8192
  45 #endif
  46
  47 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
  48 int journal_enable_debug = -1;
  49 #endif
  50
  51 ss_request_table *extra_cmds;
  52 const char *debug_prog_name;
  53 int sci_idx;
  54
  55 ext2_filsys     current_fs;
  56 quota_ctx_t     current_qctx;
  57 ext2_ino_t      root, cwd;
  58
  59 static int debugfs_setup_tdb(const char *device_name, char *undo_file,
  60                              io_manager *io_ptr)
  61 {
  62         errcode_t retval = ENOMEM;
  63         char *tdb_dir = NULL, *tdb_file = NULL;
  64         char *dev_name, *tmp_name;
  65
  66         /* (re)open a specific undo file */
  67         if (undo_file && undo_file[0] != 0) {
  68                 retval = set_undo_io_backing_manager(*io_ptr);
  69                 if (retval)
  70                         goto err;
  71                 *io_ptr = undo_io_manager;
  72                 retval = set_undo_io_backup_file(undo_file);
  73                 if (retval)
  74                         goto err;
  75                 printf("Overwriting existing filesystem; this can be undone "
  76                         "using the command:\n"
  77                         "    e2undo %s %s\n\n",
  78                         undo_file, device_name);
  79                 return retval;
  80         }
  81
  82         /*
  83          * Configuration via a conf file would be
  84          * nice
  85          */
  86         tdb_dir = ss_safe_getenv("E2FSPROGS_UNDO_DIR");
  87         if (!tdb_dir)
  88                 tdb_dir = "/var/lib/e2fsprogs";
  89
  90         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
  91             access(tdb_dir, W_OK))
  92                 return 0;
  93
  94         tmp_name = strdup(device_name);
  95         if (!tmp_name)
  96                 goto errout;
  97         dev_name = basename(tmp_name);
  98         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
  99         if (!tdb_file) {
 100                 free(tmp_name);
 101                 goto errout;
 102         }
 103         sprintf(tdb_file, "%s/debugfs-%s.e2undo", tdb_dir, dev_name);
 104         free(tmp_name);
 105
 106         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
 107                 retval = errno;
 108                 com_err("debugfs", retval,
 109                         "while trying to delete %s", tdb_file);
 110                 goto errout;
 111         }
 112
 113         retval = set_undo_io_backing_manager(*io_ptr);
 114         if (retval)
 115                 goto errout;
 116         *io_ptr = undo_io_manager;
 117         retval = set_undo_io_backup_file(tdb_file);
 118         if (retval)
 119                 goto errout;
 120         printf("Overwriting existing filesystem; this can be undone "
 121                 "using the command:\n"
 122                 "    e2undo %s %s\n\n", tdb_file, device_name);
 123
 124         free(tdb_file);
 125         return 0;
 126 errout:
 127         free(tdb_file);
 128 err:
 129         com_err("debugfs", retval, "while trying to setup undo file\n");
 130         return retval;
 131 }
 132
 133 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
 134                             blk64_t blocksize, int catastrophic,
 135                             char *data_filename, char *undo_file)
 136 {
 137         int     retval;
 138         io_channel data_io = 0;
 139         io_manager io_ptr = unix_io_manager;
 140
 141         if (superblock != 0 && blocksize == 0) {
 142                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
 143                 current_fs = NULL;
 144                 return;
 145         }
 146
 147         if (data_filename) {
 148                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
 149                         com_err(device, 0,
 150                                 "The -d option is only valid when reading an e2image file");
 151                         current_fs = NULL;
 152                         return;
 153                 }
 154                 retval = unix_io_manager->open(data_filename, 0, &data_io);
 155                 if (retval) {
 156                         com_err(data_filename, 0, "while opening data source");
 157                         current_fs = NULL;
 158                         return;
 159                 }
 160         }
 161
 162         if (catastrophic)
 163                 open_flags |= EXT2_FLAG_SKIP_MMP | EXT2_FLAG_IGNORE_SB_ERRORS;
 164
 165         if (undo_file) {
 166                 retval = debugfs_setup_tdb(device, undo_file, &io_ptr);
 167                 if (retval)
 168                         exit(1);
 169         }
 170
 171 try_open_again:
 172         retval = ext2fs_open(device, open_flags, superblock, blocksize,
 173                              io_ptr, &current_fs);
 174         if (retval && !(open_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 175                 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 176                 printf("Checksum errors in superblock!  Retrying...\n");
 177                 goto try_open_again;
 178         }
 179         if (retval) {
 180                 com_err(debug_prog_name, retval,
 181                         "while trying to open %s", device);
 182                 if (retval == EXT2_ET_BAD_MAGIC)
 183                         check_plausibility(device, CHECK_FS_EXIST, NULL);
 184                 current_fs = NULL;
 185                 return;
 186         }
 187         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 188
 189         if (catastrophic)
 190                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 191         else {
 192                 retval = ext2fs_read_bitmaps(current_fs);
 193                 if (retval) {
 194                         com_err(device, retval,
 195                                 "while reading allocation bitmaps");
 196                         goto errout;
 197                 }
 198         }
 199
 200         if (data_io) {
 201                 retval = ext2fs_set_data_io(current_fs, data_io);
 202                 if (retval) {
 203                         com_err(device, retval,
 204                                 "while setting data source");
 205                         goto errout;
 206                 }
 207         }
 208
 209         root = cwd = EXT2_ROOT_INO;
 210         return;
 211
 212 errout:
 213         retval = ext2fs_close_free(&current_fs);
 214         if (retval)
 215                 com_err(device, retval, "while trying to close filesystem");
 216 }
 217
 218 void do_open_filesys(int argc, char **argv)
 219 {
 220         int     c, err;
 221         int     catastrophic = 0;
 222         blk64_t superblock = 0;
 223         blk64_t blocksize = 0;
 224         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 225         char    *data_filename = 0;
 226         char    *undo_file = NULL;
 227
 228         reset_getopt();
 229         while ((c = getopt(argc, argv, "iwfecb:s:d:Dz:")) != EOF) {
 230                 switch (c) {
 231                 case 'i':
 232                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 233                         break;
 234                 case 'w':
 235 #ifdef READ_ONLY
 236                         goto print_usage;
 237 #else
 238                         open_flags |= EXT2_FLAG_RW;
 239 #endif /* READ_ONLY */
 240                         break;
 241                 case 'f':
 242                         open_flags |= EXT2_FLAG_FORCE;
 243                         break;
 244                 case 'e':
 245                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 246                         break;
 247                 case 'c':
 248                         catastrophic = 1;
 249                         break;
 250                 case 'd':
 251                         data_filename = optarg;
 252                         break;
 253                 case 'D':
 254                         open_flags |= EXT2_FLAG_DIRECT_IO;
 255                         break;
 256                 case 'b':
 257                         blocksize = parse_ulong(optarg, argv[0],
 258                                                 "block size", &err);
 259                         if (err)
 260                                 return;
 261                         break;
 262                 case 's':
 263                         err = strtoblk(argv[0], optarg,
 264                                        "superblock block number", &superblock);
 265                         if (err)
 266                                 return;
 267                         break;
 268                 case 'z':
 269                         undo_file = optarg;
 270                         break;
 271                 default:
 272                         goto print_usage;
 273                 }
 274         }
 275         if (optind != argc-1) {
 276                 goto print_usage;
 277         }
 278         if (check_fs_not_open(argv[0]))
 279                 return;
 280         open_filesystem(argv[optind], open_flags,
 281                         superblock, blocksize, catastrophic,
 282                         data_filename, undo_file);
 283         return;
 284
 285 print_usage:
 286         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 287                 "[-d image_filename] [-z undo_file] [-c] [-i] [-f] [-e] [-D] "
 288 #ifndef READ_ONLY
 289                 "[-w] "
 290 #endif
 291                 "<device>\n", argv[0]);
 292 }
 293
 294 void do_lcd(int argc, char **argv)
 295 {
 296         if (argc != 2) {
 297                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 298                 return;
 299         }
 300
 301         if (chdir(argv[1]) == -1) {
 302                 com_err(argv[0], errno,
 303                         "while trying to change native directory to %s",
 304                         argv[1]);
 305                 return;
 306         }
 307 }
 308
 309 static void close_filesystem(NOARGS)
 310 {
 311         int     retval;
 312
 313         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 314                 retval = ext2fs_write_inode_bitmap(current_fs);
 315                 if (retval)
 316                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 317         }
 318         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 319                 retval = ext2fs_write_block_bitmap(current_fs);
 320                 if (retval)
 321                         com_err("ext2fs_write_block_bitmap", retval, 0);
 322         }
 323         if (current_qctx)
 324                 quota_release_context(&current_qctx);
 325         retval = ext2fs_close_free(&current_fs);
 326         if (retval)
 327                 com_err("ext2fs_close", retval, 0);
 328         return;
 329 }
 330
 331 void do_close_filesys(int argc, char **argv)
 332 {
 333         int     c;
 334
 335         if (check_fs_open(argv[0]))
 336                 return;
 337
 338         reset_getopt();
 339         while ((c = getopt (argc, argv, "a")) != EOF) {
 340                 switch (c) {
 341                 case 'a':
 342                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 343                         break;
 344                 default:
 345                         goto print_usage;
 346                 }
 347         }
 348
 349         if (argc > optind) {
 350         print_usage:
 351                 com_err(0, 0, "Usage: close_filesys [-a]");
 352                 return;
 353         }
 354
 355         close_filesystem();
 356 }
 357
 358 #ifndef READ_ONLY
 359 void do_init_filesys(int argc, char **argv)
 360 {
 361         struct ext2_super_block param;
 362         errcode_t       retval;
 363         int             err;
 364         blk64_t         blocks;
 365
 366         if (common_args_process(argc, argv, 3, 3, "initialize",
 367                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 368                 return;
 369
 370         memset(&param, 0, sizeof(struct ext2_super_block));
 371         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 372         if (err)
 373                 return;
 374         ext2fs_blocks_count_set(&param, blocks);
 375         retval = ext2fs_initialize(argv[1], 0, &param,
 376                                    unix_io_manager, &current_fs);
 377         if (retval) {
 378                 com_err(argv[1], retval, "while initializing filesystem");
 379                 current_fs = NULL;
 380                 return;
 381         }
 382         root = cwd = EXT2_ROOT_INO;
 383         return;
 384 }
 385
 386 static void print_features(struct ext2_super_block * s, FILE *f)
 387 {
 388         int     i, j, printed=0;
 389         __u32   *mask = &s->s_feature_compat, m;
 390
 391         fputs("Filesystem features:", f);
 392         for (i=0; i <3; i++,mask++) {
 393                 for (j=0,m=1; j < 32; j++, m<<=1) {
 394                         if (*mask & m) {
 395                                 fprintf(f, " %s", e2p_feature2string(i, m));
 396                                 printed++;
 397                         }
 398                 }
 399         }
 400         if (printed == 0)
 401                 fputs("(none)", f);
 402         fputs("\n", f);
 403 }
 404 #endif /* READ_ONLY */
 405
 406 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 407                           const char *str, int *first, FILE *f)
 408 {
 409         if (ext2fs_bg_flags_test(fs, group, mask)) {
 410                 if (*first) {
 411                         fputs("           [", f);
 412                         *first = 0;
 413                 } else
 414                         fputs(", ", f);
 415                 fputs(str, f);
 416         }
 417 }
 418
 419 void do_show_super_stats(int argc, char *argv[])
 420 {
 421         const char *units ="block";
 422         dgrp_t  i;
 423         FILE    *out;
 424         int     c, header_only = 0;
 425         int     numdirs = 0, first, gdt_csum;
 426
 427         reset_getopt();
 428         while ((c = getopt (argc, argv, "h")) != EOF) {
 429                 switch (c) {
 430                 case 'h':
 431                         header_only++;
 432                         break;
 433                 default:
 434                         goto print_usage;
 435                 }
 436         }
 437         if (optind != argc) {
 438                 goto print_usage;
 439         }
 440         if (check_fs_open(argv[0]))
 441                 return;
 442         out = open_pager();
 443
 444         if (ext2fs_has_feature_bigalloc(current_fs->super))
 445                 units = "cluster";
 446
 447         list_super2(current_fs->super, out);
 448         if (ext2fs_has_feature_metadata_csum(current_fs->super) &&
 449             !ext2fs_superblock_csum_verify(current_fs,
 450                                            current_fs->super)) {
 451                 __u32 orig_csum = current_fs->super->s_checksum;
 452
 453                 ext2fs_superblock_csum_set(current_fs,
 454                                            current_fs->super);
 455                 fprintf(out, "Expected Checksum:        0x%08x\n",
 456                         current_fs->super->s_checksum);
 457                 current_fs->super->s_checksum = orig_csum;
 458         }
 459         for (i=0; i < current_fs->group_desc_count; i++)
 460                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 461         fprintf(out, "Directories:              %d\n", numdirs);
 462
 463         if (header_only) {
 464                 close_pager(out);
 465                 return;
 466         }
 467
 468         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 469         for (i = 0; i < current_fs->group_desc_count; i++) {
 470                 fprintf(out, " Group %2d: block bitmap at %llu, "
 471                         "inode bitmap at %llu, "
 472                         "inode table at %llu\n"
 473                         "           %u free %s%s, "
 474                         "%u free %s, "
 475                         "%u used %s%s",
 476                         i, ext2fs_block_bitmap_loc(current_fs, i),
 477                         ext2fs_inode_bitmap_loc(current_fs, i),
 478                         ext2fs_inode_table_loc(current_fs, i),
 479                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 480                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 481                         "s" : "",
 482                         ext2fs_bg_free_inodes_count(current_fs, i),
 483                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 484                         "inodes" : "inode",
 485                         ext2fs_bg_used_dirs_count(current_fs, i),
 486                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 487                                 : "directory", gdt_csum ? ", " : "\n");
 488                 if (gdt_csum)
 489                         fprintf(out, "%u unused %s\n",
 490                                 ext2fs_bg_itable_unused(current_fs, i),
 491                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 492                                 "inodes" : "inode");
 493                 first = 1;
 494                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 495                               &first, out);
 496                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 497                               &first, out);
 498                 if (gdt_csum) {
 499                         fprintf(out, "%sChecksum 0x%04x",
 500                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 501                         first = 0;
 502                 }
 503                 if (!first)
 504                         fputs("]\n", out);
 505         }
 506         close_pager(out);
 507         return;
 508 print_usage:
 509         fprintf(stderr, "%s: Usage: show_super_stats [-h]\n", argv[0]);
 510 }
 511
 512 #ifndef READ_ONLY
 513 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 514                       char **argv EXT2FS_ATTR((unused)))
 515 {
 516         if (check_fs_open(argv[0]))
 517                 return;
 518         if (check_fs_read_write(argv[0]))
 519                 return;
 520
 521         if (argv[1] && !strcmp(argv[1], "-clean"))
 522                 current_fs->super->s_state |= EXT2_VALID_FS;
 523         else
 524                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 525         ext2fs_mark_super_dirty(current_fs);
 526 }
 527 #endif /* READ_ONLY */
 528
 529 struct list_blocks_struct {
 530         FILE            *f;
 531         e2_blkcnt_t     total;
 532         blk64_t         first_block, last_block;
 533         e2_blkcnt_t     first_bcnt, last_bcnt;
 534         e2_blkcnt_t     first;
 535 };
 536
 537 static void finish_range(struct list_blocks_struct *lb)
 538 {
 539         if (lb->first_block == 0)
 540                 return;
 541         if (lb->first)
 542                 lb->first = 0;
 543         else
 544                 fprintf(lb->f, ", ");
 545         if (lb->first_block == lb->last_block)
 546                 fprintf(lb->f, "(%lld):%llu",
 547                         (long long)lb->first_bcnt, lb->first_block);
 548         else
 549                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 550                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 551                         lb->first_block, lb->last_block);
 552         lb->first_block = 0;
 553 }
 554
 555 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 556                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 557                             blk64_t ref_block EXT2FS_ATTR((unused)),
 558                             int ref_offset EXT2FS_ATTR((unused)),
 559                             void *private)
 560 {
 561         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 562
 563         lb->total++;
 564         if (blockcnt >= 0) {
 565                 /*
 566                  * See if we can add on to the existing range (if it exists)
 567                  */
 568                 if (lb->first_block &&
 569                     (lb->last_block+1 == *blocknr) &&
 570                     (lb->last_bcnt+1 == blockcnt)) {
 571                         lb->last_block = *blocknr;
 572                         lb->last_bcnt = blockcnt;
 573                         return 0;
 574                 }
 575                 /*
 576                  * Start a new range.
 577                  */
 578                 finish_range(lb);
 579                 lb->first_block = lb->last_block = *blocknr;
 580                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 581                 return 0;
 582         }
 583         /*
 584          * Not a normal block.  Always force a new range.
 585          */
 586         finish_range(lb);
 587         if (lb->first)
 588                 lb->first = 0;
 589         else
 590                 fprintf(lb->f, ", ");
 591         if (blockcnt == -1)
 592                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 593         else if (blockcnt == -2)
 594                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 595         else if (blockcnt == -3)
 596                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 597         return 0;
 598 }
 599
 600 static void internal_dump_inode_extra(FILE *out,
 601                                       const char *prefix EXT2FS_ATTR((unused)),
 602                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 603                                       struct ext2_inode_large *inode)
 604 {
 605         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 606         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 607                         EXT2_GOOD_OLD_INODE_SIZE) {
 608                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 609                                 inode->i_extra_isize);
 610                 return;
 611         }
 612 }
 613
 614 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 615 {
 616         struct list_blocks_struct lb;
 617
 618         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 619         lb.total = 0;
 620         lb.first_block = 0;
 621         lb.f = f;
 622         lb.first = 1;
 623         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 624                               list_blocks_proc, (void *)&lb);
 625         finish_range(&lb);
 626         if (lb.total)
 627                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 628         fprintf(f,"\n");
 629 }
 630
 631 static int int_log10(unsigned long long arg)
 632 {
 633         int     l = 0;
 634
 635         arg = arg / 10;
 636         while (arg) {
 637                 l++;
 638                 arg = arg / 10;
 639         }
 640         return l;
 641 }
 642
 643 #define DUMP_LEAF_EXTENTS       0x01
 644 #define DUMP_NODE_EXTENTS       0x02
 645 #define DUMP_EXTENT_TABLE       0x04
 646
 647 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 648                          int flags, int logical_width, int physical_width)
 649 {
 650         ext2_extent_handle_t    handle;
 651         struct ext2fs_extent    extent;
 652         struct ext2_extent_info info;
 653         int                     op = EXT2_EXTENT_ROOT;
 654         unsigned int            printed = 0;
 655         errcode_t               errcode;
 656
 657         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 658         if (errcode)
 659                 return;
 660
 661         if (flags & DUMP_EXTENT_TABLE)
 662                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 663                         (logical_width*2)+3, "Logical",
 664                         (physical_width*2)+3, "Physical");
 665         else
 666                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 667
 668         while (1) {
 669                 errcode = ext2fs_extent_get(handle, op, &extent);
 670
 671                 if (errcode)
 672                         break;
 673
 674                 op = EXT2_EXTENT_NEXT;
 675
 676                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 677                         continue;
 678
 679                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 680                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 681                                 continue;
 682                 } else {
 683                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 684                                 continue;
 685                 }
 686
 687                 errcode = ext2fs_extent_get_info(handle, &info);
 688                 if (errcode)
 689                         continue;
 690
 691                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 692                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 693                                 continue;
 694
 695                         if (flags & DUMP_EXTENT_TABLE) {
 696                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 697                                         "%*llu%*s %6u\n",
 698                                         info.curr_level, info.max_depth,
 699                                         info.curr_entry, info.num_entries,
 700                                         logical_width,
 701                                         extent.e_lblk,
 702                                         logical_width,
 703                                         extent.e_lblk + (extent.e_len - 1),
 704                                         physical_width,
 705                                         extent.e_pblk,
 706                                         physical_width+3, "", extent.e_len);
 707                                 continue;
 708                         }
 709
 710                         fprintf(f, "%s(ETB%d):%lld",
 711                                 printed ? ", " : "", info.curr_level,
 712                                 extent.e_pblk);
 713                         printed = 1;
 714                         continue;
 715                 }
 716
 717                 if (flags & DUMP_EXTENT_TABLE) {
 718                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 719                                 "%*llu - %*llu %6u %s\n",
 720                                 info.curr_level, info.max_depth,
 721                                 info.curr_entry, info.num_entries,
 722                                 logical_width,
 723                                 extent.e_lblk,
 724                                 logical_width,
 725                                 extent.e_lblk + (extent.e_len - 1),
 726                                 physical_width,
 727                                 extent.e_pblk,
 728                                 physical_width,
 729                                 extent.e_pblk + (extent.e_len - 1),
 730                                 extent.e_len,
 731                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 732                                         "Uninit" : "");
 733                         continue;
 734                 }
 735
 736                 if (extent.e_len == 0)
 737                         continue;
 738                 else if (extent.e_len == 1)
 739                         fprintf(f,
 740                                 "%s(%lld%s):%lld",
 741                                 printed ? ", " : "",
 742                                 extent.e_lblk,
 743                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 744                                 "[u]" : "",
 745                                 extent.e_pblk);
 746                 else
 747                         fprintf(f,
 748                                 "%s(%lld-%lld%s):%lld-%lld",
 749                                 printed ? ", " : "",
 750                                 extent.e_lblk,
 751                                 extent.e_lblk + (extent.e_len - 1),
 752                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 753                                         "[u]" : "",
 754                                 extent.e_pblk,
 755                                 extent.e_pblk + (extent.e_len - 1));
 756                 printed = 1;
 757         }
 758         if (printed)
 759                 fprintf(f, "\n");
 760         ext2fs_extent_free(handle);
 761 }
 762
 763 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 764 {
 765         errcode_t retval;
 766         size_t size;
 767
 768         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 769         if (!retval)
 770                 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
 771 }
 772
 773 static void dump_inline_symlink(FILE *out, ext2_ino_t inode_num,
 774                                 struct ext2_inode *inode, const char *prefix)
 775 {
 776         errcode_t retval;
 777         char *buf = NULL;
 778         size_t size;
 779
 780         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 781         if (retval)
 782                 goto out;
 783
 784         retval = ext2fs_get_memzero(size + 1, &buf);
 785         if (retval)
 786                 goto out;
 787
 788         retval = ext2fs_inline_data_get(current_fs, inode_num,
 789                                         inode, buf, &size);
 790         if (retval)
 791                 goto out;
 792
 793         fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 794                 (int)size, buf);
 795 out:
 796         if (buf)
 797                 ext2fs_free_mem(&buf);
 798         if (retval)
 799                 com_err(__func__, retval, "while dumping link destination");
 800 }
 801
 802 void internal_dump_inode(FILE *out, const char *prefix,
 803                          ext2_ino_t inode_num, struct ext2_inode *inode,
 804                          int do_dump_blocks)
 805 {
 806         const char *i_type;
 807         char frag, fsize;
 808         int os = current_fs->super->s_creator_os;
 809         struct ext2_inode_large *large_inode;
 810         int is_large_inode = 0;
 811
 812         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 813                 is_large_inode = 1;
 814         large_inode = (struct ext2_inode_large *) inode;
 815
 816         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 817         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 818         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 819         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 820         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 821         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 822         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 823         else i_type = "bad type";
 824         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 825         fprintf(out, "%sMode:  0%03o   Flags: 0x%x\n",
 826                 prefix, inode->i_mode & 07777, inode->i_flags);
 827         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 828                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 829                         prefix, inode->i_generation, large_inode->i_version_hi,
 830                         inode->osd1.linux1.l_i_version);
 831         } else {
 832                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 833                         inode->i_generation, inode->osd1.linux1.l_i_version);
 834         }
 835         fprintf(out, "%sUser: %5d   Group: %5d",
 836                 prefix, inode_uid(*inode), inode_gid(*inode));
 837         if (is_large_inode && large_inode->i_extra_isize >= 32)
 838                 fprintf(out, "   Project: %5d", large_inode->i_projid);
 839         fputs("   Size: ", out);
 840         if (LINUX_S_ISREG(inode->i_mode))
 841                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 842         else
 843                 fprintf(out, "%d\n", inode->i_size);
 844         if (os == EXT2_OS_HURD)
 845                 fprintf(out,
 846                         "%sFile ACL: %d Translator: %d\n",
 847                         prefix,
 848                         inode->i_file_acl,
 849                         inode->osd1.hurd1.h_i_translator);
 850         else
 851                 fprintf(out, "%sFile ACL: %llu\n",
 852                         prefix,
 853                         inode->i_file_acl | ((long long)
 854                                 (inode->osd2.linux2.l_i_file_acl_high) << 32));
 855         if (os != EXT2_OS_HURD)
 856                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 857                         prefix, inode->i_links_count,
 858                         (((unsigned long long)
 859                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 860                         inode->i_blocks);
 861         else
 862                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 863                         prefix, inode->i_links_count, inode->i_blocks);
 864         switch (os) {
 865             case EXT2_OS_HURD:
 866                 frag = inode->osd2.hurd2.h_i_frag;
 867                 fsize = inode->osd2.hurd2.h_i_fsize;
 868                 break;
 869             default:
 870                 frag = fsize = 0;
 871         }
 872         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 873                 prefix, inode->i_faddr, frag, fsize);
 874         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 875                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 876                         inode->i_ctime, large_inode->i_ctime_extra,
 877                         inode_time_to_string(inode->i_ctime,
 878                                              large_inode->i_ctime_extra));
 879                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 880                         inode->i_atime, large_inode->i_atime_extra,
 881                         inode_time_to_string(inode->i_atime,
 882                                              large_inode->i_atime_extra));
 883                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 884                         inode->i_mtime, large_inode->i_mtime_extra,
 885                         inode_time_to_string(inode->i_mtime,
 886                                              large_inode->i_mtime_extra));
 887                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 888                         large_inode->i_crtime, large_inode->i_crtime_extra,
 889                         inode_time_to_string(large_inode->i_crtime,
 890                                              large_inode->i_crtime_extra));
 891                 if (inode->i_dtime)
 892                         fprintf(out, "%s dtime: 0x%08x:(%08x) -- %s", prefix,
 893                                 large_inode->i_dtime, large_inode->i_ctime_extra,
 894                                 inode_time_to_string(inode->i_dtime,
 895                                                      large_inode->i_ctime_extra));
 896         } else {
 897                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 898                         time_to_string((__s32) inode->i_ctime));
 899                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 900                         time_to_string((__s32) inode->i_atime));
 901                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 902                         time_to_string((__s32) inode->i_mtime));
 903                 if (inode->i_dtime)
 904                         fprintf(out, "%sdtime: 0x%08x -- %s", prefix,
 905                                 inode->i_dtime,
 906                                 time_to_string((__s32) inode->i_dtime));
 907         }
 908         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 909                 internal_dump_inode_extra(out, prefix, inode_num,
 910                                           (struct ext2_inode_large *) inode);
 911         dump_inode_attributes(out, inode_num);
 912         if (ext2fs_has_feature_metadata_csum(current_fs->super)) {
 913                 __u32 crc = inode->i_checksum_lo;
 914                 if (is_large_inode &&
 915                     large_inode->i_extra_isize >=
 916                                 (offsetof(struct ext2_inode_large,
 917                                           i_checksum_hi) -
 918                                  EXT2_GOOD_OLD_INODE_SIZE))
 919                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 920                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 921         }
 922
 923         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_is_fast_symlink(inode))
 924                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 925                         (int)EXT2_I_SIZE(inode), (char *)inode->i_block);
 926         else if (LINUX_S_ISLNK(inode->i_mode) &&
 927                    (inode->i_flags & EXT4_INLINE_DATA_FL))
 928                 dump_inline_symlink(out, inode_num, inode, prefix);
 929         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 930                 int major, minor;
 931                 const char *devnote;
 932
 933                 if (inode->i_block[0]) {
 934                         major = (inode->i_block[0] >> 8) & 255;
 935                         minor = inode->i_block[0] & 255;
 936                         devnote = "";
 937                 } else {
 938                         major = (inode->i_block[1] & 0xfff00) >> 8;
 939                         minor = ((inode->i_block[1] & 0xff) |
 940                                  ((inode->i_block[1] >> 12) & 0xfff00));
 941                         devnote = "(New-style) ";
 942                 }
 943                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 944                         devnote, major, minor, major, minor);
 945         } else if (do_dump_blocks) {
 946                 if (inode->i_flags & EXT4_EXTENTS_FL)
 947                         dump_extents(out, prefix, inode_num,
 948                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 949                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 950                         dump_inline_data(out, prefix, inode_num);
 951                 else
 952                         dump_blocks(out, prefix, inode_num);
 953         }
 954 }
 955
 956 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 957 {
 958         FILE    *out;
 959
 960         out = open_pager();
 961         internal_dump_inode(out, "", inode_num, inode, 1);
 962         close_pager(out);
 963 }
 964
 965 void do_stat(int argc, char *argv[])
 966 {
 967         ext2_ino_t      inode;
 968         struct ext2_inode * inode_buf;
 969
 970         if (check_fs_open(argv[0]))
 971                 return;
 972
 973         inode_buf = (struct ext2_inode *)
 974                         malloc(EXT2_INODE_SIZE(current_fs->super));
 975         if (!inode_buf) {
 976                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 977                 return;
 978         }
 979
 980         if (common_inode_args_process(argc, argv, &inode, 0)) {
 981                 free(inode_buf);
 982                 return;
 983         }
 984
 985         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 986                                         EXT2_INODE_SIZE(current_fs->super))) {
 987                 free(inode_buf);
 988                 return;
 989         }
 990
 991         dump_inode(inode, inode_buf);
 992         free(inode_buf);
 993         return;
 994 }
 995
 996 void do_dump_extents(int argc, char **argv)
 997 {
 998         struct ext2_inode inode;
 999         ext2_ino_t      ino;
1000         FILE            *out;
1001         int             c, flags = 0;
1002         int             logical_width;
1003         int             physical_width;
1004
1005         reset_getopt();
1006         while ((c = getopt(argc, argv, "nl")) != EOF) {
1007                 switch (c) {
1008                 case 'n':
1009                         flags |= DUMP_NODE_EXTENTS;
1010                         break;
1011                 case 'l':
1012                         flags |= DUMP_LEAF_EXTENTS;
1013                         break;
1014                 }
1015         }
1016
1017         if (argc != optind + 1) {
1018                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
1019                 return;
1020         }
1021
1022         if (flags == 0)
1023                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
1024         flags |= DUMP_EXTENT_TABLE;
1025
1026         if (check_fs_open(argv[0]))
1027                 return;
1028
1029         ino = string_to_inode(argv[optind]);
1030         if (ino == 0)
1031                 return;
1032
1033         if (debugfs_read_inode(ino, &inode, argv[0]))
1034                 return;
1035
1036         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
1037                 fprintf(stderr, "%s: does not uses extent block maps\n",
1038                         argv[optind]);
1039                 return;
1040         }
1041
1042         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
1043                                   current_fs->blocksize) + 1;
1044         if (logical_width < 5)
1045                 logical_width = 5;
1046         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
1047         if (physical_width < 5)
1048                 physical_width = 5;
1049
1050         out = open_pager();
1051         dump_extents(out, "", ino, flags, logical_width, physical_width);
1052         close_pager(out);
1053         return;
1054 }
1055
1056 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
1057                              blk64_t *blocknr,
1058                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1059                              blk64_t ref_block EXT2FS_ATTR((unused)),
1060                              int ref_offset EXT2FS_ATTR((unused)),
1061                              void *private EXT2FS_ATTR((unused)))
1062 {
1063         printf("%llu ", *blocknr);
1064         return 0;
1065 }
1066
1067 void do_blocks(int argc, char *argv[])
1068 {
1069         ext2_ino_t      inode;
1070
1071         if (check_fs_open(argv[0]))
1072                 return;
1073
1074         if (common_inode_args_process(argc, argv, &inode, 0)) {
1075                 return;
1076         }
1077
1078         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1079                               print_blocks_proc, NULL);
1080         fputc('\n', stdout);
1081         return;
1082 }
1083
1084 void do_chroot(int argc, char *argv[])
1085 {
1086         ext2_ino_t inode;
1087         int retval;
1088
1089         if (common_inode_args_process(argc, argv, &inode, 0))
1090                 return;
1091
1092         retval = ext2fs_check_directory(current_fs, inode);
1093         if (retval)  {
1094                 com_err(argv[1], retval, 0);
1095                 return;
1096         }
1097         root = inode;
1098 }
1099
1100 #ifndef READ_ONLY
1101 void do_clri(int argc, char *argv[])
1102 {
1103         ext2_ino_t inode;
1104         struct ext2_inode inode_buf;
1105
1106         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1107                 return;
1108
1109         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1110                 return;
1111         memset(&inode_buf, 0, sizeof(inode_buf));
1112         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1113                 return;
1114 }
1115
1116 void do_freei(int argc, char *argv[])
1117 {
1118         unsigned int    len = 1;
1119         int             err = 0;
1120         ext2_ino_t      inode;
1121
1122         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1123                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1124                 return;
1125         if (check_fs_read_write(argv[0]))
1126                 return;
1127
1128         inode = string_to_inode(argv[1]);
1129         if (!inode)
1130                 return;
1131
1132         if (argc == 3) {
1133                 len = parse_ulong(argv[2], argv[0], "length", &err);
1134                 if (err)
1135                         return;
1136         }
1137
1138         if (len == 1 &&
1139             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1140                 com_err(argv[0], 0, "Warning: inode already clear");
1141         while (len-- > 0)
1142                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1143         ext2fs_mark_ib_dirty(current_fs);
1144 }
1145
1146 void do_seti(int argc, char *argv[])
1147 {
1148         unsigned int    len = 1;
1149         int             err = 0;
1150         ext2_ino_t      inode;
1151
1152         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1153                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1154                 return;
1155         if (check_fs_read_write(argv[0]))
1156                 return;
1157
1158         inode = string_to_inode(argv[1]);
1159         if (!inode)
1160                 return;
1161
1162         if (argc == 3) {
1163                 len = parse_ulong(argv[2], argv[0], "length", &err);
1164                 if (err)
1165                         return;
1166         }
1167
1168         if ((len == 1) &&
1169             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1170                 com_err(argv[0], 0, "Warning: inode already set");
1171         while (len-- > 0)
1172                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1173         ext2fs_mark_ib_dirty(current_fs);
1174 }
1175 #endif /* READ_ONLY */
1176
1177 void do_testi(int argc, char *argv[])
1178 {
1179         ext2_ino_t inode;
1180
1181         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1182                 return;
1183
1184         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1185                 printf("Inode %u is marked in use\n", inode);
1186         else
1187                 printf("Inode %u is not in use\n", inode);
1188 }
1189
1190 #ifndef READ_ONLY
1191 void do_freeb(int argc, char *argv[])
1192 {
1193         blk64_t block;
1194         blk64_t count = 1;
1195
1196         if (common_block_args_process(argc, argv, &block, &count))
1197                 return;
1198         if (check_fs_read_write(argv[0]))
1199                 return;
1200         while (count-- > 0) {
1201                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1202                         com_err(argv[0], 0, "Warning: block %llu already clear",
1203                                 block);
1204                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1205                 block++;
1206         }
1207         ext2fs_mark_bb_dirty(current_fs);
1208 }
1209
1210 void do_setb(int argc, char *argv[])
1211 {
1212         blk64_t block;
1213         blk64_t count = 1;
1214
1215         if (common_block_args_process(argc, argv, &block, &count))
1216                 return;
1217         if (check_fs_read_write(argv[0]))
1218                 return;
1219         while (count-- > 0) {
1220                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1221                         com_err(argv[0], 0, "Warning: block %llu already set",
1222                                 block);
1223                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1224                 block++;
1225         }
1226         ext2fs_mark_bb_dirty(current_fs);
1227 }
1228 #endif /* READ_ONLY */
1229
1230 void do_testb(int argc, char *argv[])
1231 {
1232         blk64_t block;
1233         blk64_t count = 1;
1234
1235         if (common_block_args_process(argc, argv, &block, &count))
1236                 return;
1237         while (count-- > 0) {
1238                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1239                         printf("Block %llu marked in use\n", block);
1240                 else
1241                         printf("Block %llu not in use\n", block);
1242                 block++;
1243         }
1244 }
1245
1246 #ifndef READ_ONLY
1247 static void modify_u8(char *com, const char *prompt,
1248                       const char *format, __u8 *val)
1249 {
1250         char buf[200];
1251         unsigned long v;
1252         char *tmp;
1253
1254         sprintf(buf, format, *val);
1255         printf("%30s    [%s] ", prompt, buf);
1256         if (!fgets(buf, sizeof(buf), stdin))
1257                 return;
1258         if (buf[strlen (buf) - 1] == '\n')
1259                 buf[strlen (buf) - 1] = '\0';
1260         if (!buf[0])
1261                 return;
1262         v = strtoul(buf, &tmp, 0);
1263         if (*tmp)
1264                 com_err(com, 0, "Bad value - %s", buf);
1265         else
1266                 *val = v;
1267 }
1268
1269 static void modify_u16(char *com, const char *prompt,
1270                        const char *format, __u16 *val)
1271 {
1272         char buf[200];
1273         unsigned long v;
1274         char *tmp;
1275
1276         sprintf(buf, format, *val);
1277         printf("%30s    [%s] ", prompt, buf);
1278         if (!fgets(buf, sizeof(buf), stdin))
1279                 return;
1280         if (buf[strlen (buf) - 1] == '\n')
1281                 buf[strlen (buf) - 1] = '\0';
1282         if (!buf[0])
1283                 return;
1284         v = strtoul(buf, &tmp, 0);
1285         if (*tmp)
1286                 com_err(com, 0, "Bad value - %s", buf);
1287         else
1288                 *val = v;
1289 }
1290
1291 static void modify_u32(char *com, const char *prompt,
1292                        const char *format, __u32 *val)
1293 {
1294         char buf[200];
1295         unsigned long v;
1296         char *tmp;
1297
1298         sprintf(buf, format, *val);
1299         printf("%30s    [%s] ", prompt, buf);
1300         if (!fgets(buf, sizeof(buf), stdin))
1301                 return;
1302         if (buf[strlen (buf) - 1] == '\n')
1303                 buf[strlen (buf) - 1] = '\0';
1304         if (!buf[0])
1305                 return;
1306         v = strtoul(buf, &tmp, 0);
1307         if (*tmp)
1308                 com_err(com, 0, "Bad value - %s", buf);
1309         else
1310                 *val = v;
1311 }
1312
1313
1314 void do_modify_inode(int argc, char *argv[])
1315 {
1316         struct ext2_inode inode;
1317         ext2_ino_t      inode_num;
1318         int             i;
1319         unsigned char   *frag, *fsize;
1320         char            buf[80];
1321         int             os;
1322         const char      *hex_format = "0x%x";
1323         const char      *octal_format = "0%o";
1324         const char      *decimal_format = "%d";
1325         const char      *unsignedlong_format = "%lu";
1326
1327         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1328                 return;
1329
1330         os = current_fs->super->s_creator_os;
1331
1332         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1333                 return;
1334
1335         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1336         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1337         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1338         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1339         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1340         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1341         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1342         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1343         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1344         if (os == EXT2_OS_LINUX)
1345                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1346                            &inode.osd2.linux2.l_i_blocks_hi);
1347         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1348         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1349         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1350 #if 0
1351         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1352 #endif
1353         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1354
1355         modify_u32(argv[0], "High 32bits of size", decimal_format,
1356                    &inode.i_size_high);
1357
1358         if (os == EXT2_OS_HURD)
1359                 modify_u32(argv[0], "Translator Block",
1360                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1361
1362         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1363         switch (os) {
1364             case EXT2_OS_HURD:
1365                 frag = &inode.osd2.hurd2.h_i_frag;
1366                 fsize = &inode.osd2.hurd2.h_i_fsize;
1367                 break;
1368             default:
1369                 frag = fsize = 0;
1370         }
1371         if (frag)
1372                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1373         if (fsize)
1374                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1375
1376         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1377                 sprintf(buf, "Direct Block #%d", i);
1378                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1379         }
1380         modify_u32(argv[0], "Indirect Block", decimal_format,
1381                     &inode.i_block[EXT2_IND_BLOCK]);
1382         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1383                     &inode.i_block[EXT2_DIND_BLOCK]);
1384         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1385                     &inode.i_block[EXT2_TIND_BLOCK]);
1386         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1387                 return;
1388 }
1389 #endif /* READ_ONLY */
1390
1391 void do_change_working_dir(int argc, char *argv[])
1392 {
1393         ext2_ino_t      inode;
1394         int             retval;
1395
1396         if (common_inode_args_process(argc, argv, &inode, 0))
1397                 return;
1398
1399         retval = ext2fs_check_directory(current_fs, inode);
1400         if (retval) {
1401                 com_err(argv[1], retval, 0);
1402                 return;
1403         }
1404         cwd = inode;
1405         return;
1406 }
1407
1408 void do_print_working_directory(int argc, char *argv[])
1409 {
1410         int     retval;
1411         char    *pathname = NULL;
1412
1413         if (common_args_process(argc, argv, 1, 1,
1414                                 "print_working_directory", "", 0))
1415                 return;
1416
1417         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1418         if (retval) {
1419                 com_err(argv[0], retval,
1420                         "while trying to get pathname of cwd");
1421         }
1422         printf("[pwd]   INODE: %6u  PATH: %s\n",
1423                cwd, pathname ? pathname : "NULL");
1424         if (pathname) {
1425                 free(pathname);
1426                 pathname = NULL;
1427         }
1428         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1429         if (retval) {
1430                 com_err(argv[0], retval,
1431                         "while trying to get pathname of root");
1432         }
1433         printf("[root]  INODE: %6u  PATH: %s\n",
1434                root, pathname ? pathname : "NULL");
1435         if (pathname) {
1436                 free(pathname);
1437                 pathname = NULL;
1438         }
1439         return;
1440 }
1441
1442 #ifndef READ_ONLY
1443 static void make_link(char *sourcename, char *destname)
1444 {
1445         ext2_ino_t      ino;
1446         struct ext2_inode inode;
1447         int             retval;
1448         ext2_ino_t      dir;
1449         char            *dest, *cp, *base_name;
1450
1451         /*
1452          * Get the source inode
1453          */
1454         ino = string_to_inode(sourcename);
1455         if (!ino)
1456                 return;
1457         base_name = strrchr(sourcename, '/');
1458         if (base_name)
1459                 base_name++;
1460         else
1461                 base_name = sourcename;
1462         /*
1463          * Figure out the destination.  First see if it exists and is
1464          * a directory.
1465          */
1466         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1467                 dest = base_name;
1468         else {
1469                 /*
1470                  * OK, it doesn't exist.  See if it is
1471                  * '<dir>/basename' or 'basename'
1472                  */
1473                 cp = strrchr(destname, '/');
1474                 if (cp) {
1475                         *cp = 0;
1476                         dir = string_to_inode(destname);
1477                         if (!dir)
1478                                 return;
1479                         dest = cp+1;
1480                 } else {
1481                         dir = cwd;
1482                         dest = destname;
1483                 }
1484         }
1485
1486         if (debugfs_read_inode(ino, &inode, sourcename))
1487                 return;
1488
1489         retval = ext2fs_link(current_fs, dir, dest, ino,
1490                              ext2_file_type(inode.i_mode));
1491         if (retval)
1492                 com_err("make_link", retval, 0);
1493         return;
1494 }
1495
1496
1497 void do_link(int argc, char *argv[])
1498 {
1499         if (common_args_process(argc, argv, 3, 3, "link",
1500                                 "<source file> <dest_name>", CHECK_FS_RW))
1501                 return;
1502
1503         make_link(argv[1], argv[2]);
1504 }
1505
1506 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1507                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1508                             blk64_t ref_block EXT2FS_ATTR((unused)),
1509                             int ref_offset EXT2FS_ATTR((unused)),
1510                             void *private EXT2FS_ATTR((unused)))
1511 {
1512         blk64_t block;
1513
1514         block = *blocknr;
1515         ext2fs_block_alloc_stats2(fs, block, +1);
1516         return 0;
1517 }
1518
1519 void do_undel(int argc, char *argv[])
1520 {
1521         ext2_ino_t      ino;
1522         struct ext2_inode inode;
1523
1524         if (common_args_process(argc, argv, 2, 3, "undelete",
1525                                 "<inode_num> [dest_name]",
1526                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1527                 return;
1528
1529         ino = string_to_inode(argv[1]);
1530         if (!ino)
1531                 return;
1532
1533         if (debugfs_read_inode(ino, &inode, argv[1]))
1534                 return;
1535
1536         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1537                 com_err(argv[1], 0, "Inode is not marked as deleted");
1538                 return;
1539         }
1540
1541         /*
1542          * XXX this function doesn't handle changing the links count on the
1543          * parent directory when undeleting a directory.
1544          */
1545         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1546         inode.i_dtime = 0;
1547
1548         if (debugfs_write_inode(ino, &inode, argv[0]))
1549                 return;
1550
1551         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1552                               mark_blocks_proc, NULL);
1553
1554         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1555
1556         if (argc > 2)
1557                 make_link(argv[1], argv[2]);
1558 }
1559
1560 static void unlink_file_by_name(char *filename)
1561 {
1562         int             retval;
1563         ext2_ino_t      dir;
1564         char            *base_name;
1565
1566         base_name = strrchr(filename, '/');
1567         if (base_name) {
1568                 *base_name++ = '\0';
1569                 dir = string_to_inode(filename);
1570                 if (!dir)
1571                         return;
1572         } else {
1573                 dir = cwd;
1574                 base_name = filename;
1575         }
1576         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1577         if (retval)
1578                 com_err("unlink_file_by_name", retval, 0);
1579         return;
1580 }
1581
1582 void do_unlink(int argc, char *argv[])
1583 {
1584         if (common_args_process(argc, argv, 2, 2, "link",
1585                                 "<pathname>", CHECK_FS_RW))
1586                 return;
1587
1588         unlink_file_by_name(argv[1]);
1589 }
1590
1591 void do_copy_inode(int argc, char *argv[])
1592 {
1593         ext2_ino_t      src_ino, dest_ino;
1594         unsigned char   buf[4096];
1595
1596         if (common_args_process(argc, argv, 3, 3, "copy_inode",
1597                                 "<source file> <dest_name>", CHECK_FS_RW))
1598                 return;
1599
1600         src_ino = string_to_inode(argv[1]);
1601         if (!src_ino)
1602                 return;
1603
1604         dest_ino = string_to_inode(argv[2]);
1605         if (!dest_ino)
1606                 return;
1607
1608         if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
1609                                     argv[0], sizeof(buf)))
1610                 return;
1611
1612         if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
1613                                      argv[0], sizeof(buf)))
1614                 return;
1615 }
1616
1617 #endif /* READ_ONLY */
1618
1619 void do_find_free_block(int argc, char *argv[])
1620 {
1621         blk64_t free_blk, goal, first_free = 0;
1622         int             count;
1623         errcode_t       retval;
1624         char            *tmp;
1625
1626         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1627                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1628                 return;
1629         }
1630         if (check_fs_open(argv[0]))
1631                 return;
1632
1633         if (argc > 1) {
1634                 count = strtol(argv[1],&tmp,0);
1635                 if (*tmp) {
1636                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1637                         return;
1638                 }
1639         } else
1640                 count = 1;
1641
1642         if (argc > 2) {
1643                 goal = strtol(argv[2], &tmp, 0);
1644                 if (*tmp) {
1645                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1646                         return;
1647                 }
1648         }
1649         else
1650                 goal = current_fs->super->s_first_data_block;
1651
1652         printf("Free blocks found: ");
1653         free_blk = goal - 1;
1654         while (count-- > 0) {
1655                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1656                                            &free_blk);
1657                 if (first_free) {
1658                         if (first_free == free_blk)
1659                                 break;
1660                 } else
1661                         first_free = free_blk;
1662                 if (retval) {
1663                         com_err("ext2fs_new_block", retval, 0);
1664                         return;
1665                 } else
1666                         printf("%llu ", free_blk);
1667         }
1668         printf("\n");
1669 }
1670
1671 void do_find_free_inode(int argc, char *argv[])
1672 {
1673         ext2_ino_t      free_inode, dir;
1674         int             mode;
1675         int             retval;
1676         char            *tmp;
1677
1678         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1679                 com_err(argv[0], 0, "Usage: find_free_inode [dir [mode]]");
1680                 return;
1681         }
1682         if (check_fs_open(argv[0]))
1683                 return;
1684
1685         if (argc > 1) {
1686                 dir = strtol(argv[1], &tmp, 0);
1687                 if (*tmp) {
1688                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1689                         return;
1690                 }
1691         }
1692         else
1693                 dir = root;
1694         if (argc > 2) {
1695                 mode = strtol(argv[2], &tmp, 0);
1696                 if (*tmp) {
1697                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1698                         return;
1699                 }
1700         } else
1701                 mode = 010755;
1702
1703         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1704         if (retval)
1705                 com_err("ext2fs_new_inode", retval, 0);
1706         else
1707                 printf("Free inode found: %u\n", free_inode);
1708 }
1709
1710 #ifndef READ_ONLY
1711 void do_write(int argc, char *argv[])
1712 {
1713         errcode_t       retval;
1714
1715         if (common_args_process(argc, argv, 3, 3, "write",
1716                                 "<native file> <new file>", CHECK_FS_RW))
1717                 return;
1718
1719         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1720         if (retval)
1721                 com_err(argv[0], retval, 0);
1722 }
1723
1724 void do_mknod(int argc, char *argv[])
1725 {
1726         unsigned long   major, minor;
1727         errcode_t       retval;
1728         int             nr;
1729         struct stat     st;
1730
1731         if (check_fs_open(argv[0]))
1732                 return;
1733         if (argc < 3 || argv[2][1]) {
1734         usage:
1735                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1736                 return;
1737         }
1738
1739         minor = major = 0;
1740         switch (argv[2][0]) {
1741                 case 'p':
1742                         st.st_mode = S_IFIFO;
1743                         nr = 3;
1744                         break;
1745                 case 'c':
1746                         st.st_mode = S_IFCHR;
1747                         nr = 5;
1748                         break;
1749                 case 'b':
1750                         st.st_mode = S_IFBLK;
1751                         nr = 5;
1752                         break;
1753                 default:
1754                         nr = 0;
1755         }
1756
1757         if (nr == 5) {
1758                 major = strtoul(argv[3], argv+3, 0);
1759                 minor = strtoul(argv[4], argv+4, 0);
1760                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1761                         nr = 0;
1762         }
1763
1764         if (argc != nr)
1765                 goto usage;
1766
1767         st.st_rdev = makedev(major, minor);
1768         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1769         if (retval)
1770                 com_err(argv[0], retval, 0);
1771 }
1772
1773 void do_mkdir(int argc, char *argv[])
1774 {
1775         errcode_t retval;
1776
1777         if (common_args_process(argc, argv, 2, 2, "mkdir",
1778                                 "<filename>", CHECK_FS_RW))
1779                 return;
1780
1781         retval = do_mkdir_internal(current_fs, cwd, argv[1], root);
1782         if (retval)
1783                 com_err(argv[0], retval, 0);
1784
1785 }
1786
1787 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1788                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1789                                blk64_t ref_block EXT2FS_ATTR((unused)),
1790                                int ref_offset EXT2FS_ATTR((unused)),
1791                                void *private)
1792 {
1793         blk64_t block = *blocknr;
1794         blk64_t *last_cluster = (blk64_t *)private;
1795         blk64_t cluster = EXT2FS_B2C(fs, block);
1796
1797         if (cluster == *last_cluster)
1798                 return 0;
1799
1800         *last_cluster = cluster;
1801
1802         ext2fs_block_alloc_stats2(fs, block, -1);
1803         return 0;
1804 }
1805
1806 static void kill_file_by_inode(ext2_ino_t inode)
1807 {
1808         struct ext2_inode inode_buf;
1809
1810         if (debugfs_read_inode(inode, &inode_buf, 0))
1811                 return;
1812         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1813         if (debugfs_write_inode(inode, &inode_buf, 0))
1814                 return;
1815         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1816                 blk64_t last_cluster = 0;
1817                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1818                                       NULL, release_blocks_proc, &last_cluster);
1819         }
1820         printf("\n");
1821         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1822                                   LINUX_S_ISDIR(inode_buf.i_mode));
1823 }
1824
1825
1826 void do_kill_file(int argc, char *argv[])
1827 {
1828         ext2_ino_t inode_num;
1829
1830         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1831                 return;
1832
1833         kill_file_by_inode(inode_num);
1834 }
1835
1836 void do_rm(int argc, char *argv[])
1837 {
1838         int retval;
1839         ext2_ino_t inode_num;
1840         struct ext2_inode inode;
1841
1842         if (common_args_process(argc, argv, 2, 2, "rm",
1843                                 "<filename>", CHECK_FS_RW))
1844                 return;
1845
1846         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1847         if (retval) {
1848                 com_err(argv[0], retval, "while trying to resolve filename");
1849                 return;
1850         }
1851
1852         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1853                 return;
1854
1855         if (LINUX_S_ISDIR(inode.i_mode)) {
1856                 com_err(argv[0], 0, "file is a directory");
1857                 return;
1858         }
1859
1860         --inode.i_links_count;
1861         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1862                 return;
1863
1864         unlink_file_by_name(argv[1]);
1865         if (inode.i_links_count == 0)
1866                 kill_file_by_inode(inode_num);
1867 }
1868
1869 struct rd_struct {
1870         ext2_ino_t      parent;
1871         int             empty;
1872 };
1873
1874 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1875                       int       entry EXT2FS_ATTR((unused)),
1876                       struct ext2_dir_entry *dirent,
1877                       int       offset EXT2FS_ATTR((unused)),
1878                       int       blocksize EXT2FS_ATTR((unused)),
1879                       char      *buf EXT2FS_ATTR((unused)),
1880                       void      *private)
1881 {
1882         struct rd_struct *rds = (struct rd_struct *) private;
1883
1884         if (dirent->inode == 0)
1885                 return 0;
1886         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1887                 return 0;
1888         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1889             (dirent->name[1] == '.')) {
1890                 rds->parent = dirent->inode;
1891                 return 0;
1892         }
1893         rds->empty = 0;
1894         return 0;
1895 }
1896
1897 void do_rmdir(int argc, char *argv[])
1898 {
1899         int retval;
1900         ext2_ino_t inode_num;
1901         struct ext2_inode inode;
1902         struct rd_struct rds;
1903
1904         if (common_args_process(argc, argv, 2, 2, "rmdir",
1905                                 "<filename>", CHECK_FS_RW))
1906                 return;
1907
1908         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1909         if (retval) {
1910                 com_err(argv[0], retval, "while trying to resolve filename");
1911                 return;
1912         }
1913
1914         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1915                 return;
1916
1917         if (!LINUX_S_ISDIR(inode.i_mode)) {
1918                 com_err(argv[0], 0, "file is not a directory");
1919                 return;
1920         }
1921
1922         rds.parent = 0;
1923         rds.empty = 1;
1924
1925         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1926                                     0, rmdir_proc, &rds);
1927         if (retval) {
1928                 com_err(argv[0], retval, "while iterating over directory");
1929                 return;
1930         }
1931         if (rds.empty == 0) {
1932                 com_err(argv[0], 0, "directory not empty");
1933                 return;
1934         }
1935
1936         inode.i_links_count = 0;
1937         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1938                 return;
1939
1940         unlink_file_by_name(argv[1]);
1941         kill_file_by_inode(inode_num);
1942
1943         if (rds.parent) {
1944                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1945                         return;
1946                 if (inode.i_links_count > 1)
1947                         inode.i_links_count--;
1948                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1949                         return;
1950         }
1951 }
1952 #endif /* READ_ONLY */
1953
1954 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1955                             char *argv[] EXT2FS_ATTR((unused)))
1956 {
1957         if (current_fs)
1958                 printf("Open mode: read-%s\n",
1959                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1960         printf("Filesystem in use: %s\n",
1961                current_fs ? current_fs->device_name : "--none--");
1962 }
1963
1964 #ifndef READ_ONLY
1965 void do_expand_dir(int argc, char *argv[])
1966 {
1967         ext2_ino_t inode;
1968         int retval;
1969
1970         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1971                 return;
1972
1973         retval = ext2fs_expand_dir(current_fs, inode);
1974         if (retval)
1975                 com_err("ext2fs_expand_dir", retval, 0);
1976         return;
1977 }
1978
1979 void do_features(int argc, char *argv[])
1980 {
1981         int     i;
1982
1983         if (check_fs_open(argv[0]))
1984                 return;
1985
1986         if ((argc != 1) && check_fs_read_write(argv[0]))
1987                 return;
1988         for (i=1; i < argc; i++) {
1989                 if (e2p_edit_feature(argv[i],
1990                                      &current_fs->super->s_feature_compat, 0))
1991                         com_err(argv[0], 0, "Unknown feature: %s\n",
1992                                 argv[i]);
1993                 else
1994                         ext2fs_mark_super_dirty(current_fs);
1995         }
1996         print_features(current_fs->super, stdout);
1997 }
1998 #endif /* READ_ONLY */
1999
2000 void do_bmap(int argc, char *argv[])
2001 {
2002         ext2_ino_t      ino;
2003         blk64_t         blk, pblk = 0;
2004         int             c, err, flags = 0, ret_flags = 0;
2005         errcode_t       errcode;
2006
2007         if (check_fs_open(argv[0]))
2008                 return;
2009
2010         reset_getopt();
2011         while ((c = getopt (argc, argv, "a")) != EOF) {
2012                 switch (c) {
2013                 case 'a':
2014                         flags |= BMAP_ALLOC;
2015                         break;
2016                 default:
2017                         goto print_usage;
2018                 }
2019         }
2020
2021         if (argc <= optind+1) {
2022         print_usage:
2023                 com_err(0, 0,
2024                         "Usage: bmap [-a] <file> logical_blk [physical_blk]");
2025                 return;
2026         }
2027
2028         ino = string_to_inode(argv[optind++]);
2029         if (!ino)
2030                 return;
2031         err = strtoblk(argv[0], argv[optind++], "logical block", &blk);
2032         if (err)
2033                 return;
2034
2035         if (argc > optind+1)
2036                 goto print_usage;
2037
2038         if (argc == optind+1) {
2039                 err = strtoblk(argv[0], argv[optind++],
2040                                "physical block", &pblk);
2041                 if (err)
2042                         return;
2043                 if (flags & BMAP_ALLOC) {
2044                         com_err(0, 0, "Can't set and allocate a block");
2045                         return;
2046                 }
2047                 flags |= BMAP_SET;
2048         }
2049
2050         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, flags, blk,
2051                                &ret_flags, &pblk);
2052         if (errcode) {
2053                 com_err(argv[0], errcode,
2054                         "while mapping logical block %llu\n", blk);
2055                 return;
2056         }
2057         printf("%llu", pblk);
2058         if (ret_flags & BMAP_RET_UNINIT)
2059                 fputs(" (uninit)", stdout);
2060         fputc('\n', stdout);
2061 }
2062
2063 void do_imap(int argc, char *argv[])
2064 {
2065         ext2_ino_t      ino;
2066         unsigned long   group, block, block_nr, offset;
2067
2068         if (common_args_process(argc, argv, 2, 2, argv[0],
2069                                 "<file>", 0))
2070                 return;
2071         ino = string_to_inode(argv[1]);
2072         if (!ino)
2073                 return;
2074
2075         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2076         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2077                 EXT2_INODE_SIZE(current_fs->super);
2078         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2079         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2080                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2081                         group);
2082                 return;
2083         }
2084         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2085                 block;
2086         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2087
2088         printf("Inode %d is part of block group %lu\n"
2089                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2090                block_nr, offset);
2091
2092 }
2093
2094 void do_idump(int argc, char *argv[])
2095 {
2096         struct ext2_inode_large *inode;
2097         ext2_ino_t      ino;
2098         unsigned char   *buf;
2099         errcode_t       err;
2100         unsigned int    isize, size, offset = 0;
2101         int             c, mode = 0;
2102
2103         reset_getopt();
2104         while ((c = getopt (argc, argv, "bex")) != EOF) {
2105                 if (mode || c == '?') {
2106                 print_usage:
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                 no_extra_space:
2148                         com_err(argv[0], 0, "No extra space in inode");
2149                         goto err;
2150                 }
2151                 offset = EXT2_GOOD_OLD_INODE_SIZE + inode->i_extra_isize;
2152                 if (offset > size)
2153                         goto err;
2154                 size -= offset;
2155                 break;
2156         }
2157         if (mode == 'x')
2158                 raw_inode_xattr_dump(stdout, buf + offset, size);
2159         else
2160                 do_byte_hexdump(stdout, buf + offset, size);
2161 err:
2162         ext2fs_free_mem(&buf);
2163 }
2164
2165 #ifndef READ_ONLY
2166 void do_set_current_time(int argc, char *argv[])
2167 {
2168         __s64 now;
2169
2170         if (common_args_process(argc, argv, 2, 2, argv[0],
2171                                 "<time>", 0))
2172                 return;
2173
2174         now = string_to_time(argv[1]);
2175         if (now == -1) {
2176                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2177                         argv[1]);
2178                 return;
2179
2180         } else {
2181                 printf("Setting current time to %s\n", time_to_string(now));
2182                 current_fs->now = now;
2183         }
2184 }
2185 #endif /* READ_ONLY */
2186
2187 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2188 {
2189         int compat, bit, ret;
2190         unsigned int feature_mask;
2191
2192         if (name) {
2193                 if (feature_type == E2P_FS_FEATURE)
2194                         ret = e2p_string2feature(name, &compat, &feature_mask);
2195                 else
2196                         ret = e2p_jrnl_string2feature(name, &compat,
2197                                                       &feature_mask);
2198                 if (ret)
2199                         return ret;
2200
2201                 if (!(supp[compat] & feature_mask))
2202                         return 1;
2203         } else {
2204                 for (compat = 0; compat < 3; compat++) {
2205                         for (bit = 0, feature_mask = 1; bit < 32;
2206                              bit++, feature_mask <<= 1) {
2207                                 if (supp[compat] & feature_mask) {
2208                                         if (feature_type == E2P_FS_FEATURE)
2209                                                 fprintf(stdout, " %s",
2210                                                 e2p_feature2string(compat,
2211                                                 feature_mask));
2212                                         else
2213                                                 fprintf(stdout, " %s",
2214                                                 e2p_jrnl_feature2string(compat,
2215                                                 feature_mask));
2216                                 }
2217                         }
2218                 }
2219                 fprintf(stdout, "\n");
2220         }
2221
2222         return 0;
2223 }
2224
2225 void do_supported_features(int argc, char *argv[])
2226 {
2227         int     ret;
2228         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2229                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2230                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2231         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2232                                  JFS_KNOWN_INCOMPAT_FEATURES,
2233                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2234
2235         if (argc > 1) {
2236                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2237                 if (ret) {
2238                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2239                                                 argv[1]);
2240                 }
2241                 if (ret)
2242                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2243                 else
2244                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2245         } else {
2246                 fprintf(stdout, "Supported features:");
2247                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2248                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2249         }
2250 }
2251
2252 #ifndef READ_ONLY
2253 void do_punch(int argc, char *argv[])
2254 {
2255         ext2_ino_t      ino;
2256         blk64_t         start, end;
2257         int             err;
2258         errcode_t       errcode;
2259
2260         if (common_args_process(argc, argv, 3, 4, argv[0],
2261                                 "<file> start_blk [end_blk]",
2262                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2263                 return;
2264
2265         ino = string_to_inode(argv[1]);
2266         if (!ino)
2267                 return;
2268         err = strtoblk(argv[0], argv[2], "logical block", &start);
2269         if (err)
2270                 return;
2271         if (argc == 4) {
2272                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2273                 if (err)
2274                         return;
2275         } else
2276                 end = ~0;
2277
2278         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2279
2280         if (errcode) {
2281                 com_err(argv[0], errcode,
2282                         "while truncating inode %u from %llu to %llu\n", ino,
2283                         (unsigned long long) start, (unsigned long long) end);
2284                 return;
2285         }
2286 }
2287
2288 void do_fallocate(int argc, char *argv[])
2289 {
2290         ext2_ino_t      ino;
2291         blk64_t         start, end;
2292         int             err;
2293         errcode_t       errcode;
2294
2295         if (common_args_process(argc, argv, 3, 4, argv[0],
2296                                 "<file> start_blk [end_blk]",
2297                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2298                 return;
2299
2300         ino = string_to_inode(argv[1]);
2301         if (!ino)
2302                 return;
2303         err = strtoblk(argv[0], argv[2], "logical block", &start);
2304         if (err)
2305                 return;
2306         if (argc == 4) {
2307                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2308                 if (err)
2309                         return;
2310         } else
2311                 end = ~0;
2312
2313         errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
2314                                    ino, NULL, ~0ULL, start, end - start + 1);
2315
2316         if (errcode) {
2317                 com_err(argv[0], errcode,
2318                         "while fallocating inode %u from %llu to %llu\n", ino,
2319                         (unsigned long long) start, (unsigned long long) end);
2320                 return;
2321         }
2322 }
2323 #endif /* READ_ONLY */
2324
2325 void do_symlink(int argc, char *argv[])
2326 {
2327         errcode_t       retval;
2328
2329         if (common_args_process(argc, argv, 3, 3, "symlink",
2330                                 "<filename> <target>", CHECK_FS_RW))
2331                 return;
2332
2333         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2334         if (retval)
2335                 com_err(argv[0], retval, 0);
2336
2337 }
2338
2339 #if CONFIG_MMP
2340 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2341 {
2342         struct mmp_struct *mmp_s;
2343         unsigned long long mmp_block;
2344         time_t t;
2345         errcode_t retval = 0;
2346
2347         if (check_fs_open(argv[0]))
2348                 return;
2349
2350         if (argc > 1) {
2351                 char *end = NULL;
2352                 mmp_block = strtoull(argv[1], &end, 0);
2353                 if (end == argv[0] || mmp_block == 0) {
2354                         fprintf(stderr, "%s: invalid MMP block '%s' given\n",
2355                                 argv[0], argv[1]);
2356                         return;
2357                 }
2358         } else {
2359                 mmp_block = current_fs->super->s_mmp_block;
2360         }
2361
2362         if (mmp_block == 0) {
2363                 fprintf(stderr, "%s: MMP: not active on this filesystem.\n",
2364                         argv[0]);
2365                 return;
2366         }
2367
2368         if (current_fs->mmp_buf == NULL) {
2369                 retval = ext2fs_get_mem(current_fs->blocksize,
2370                                         &current_fs->mmp_buf);
2371                 if (retval) {
2372                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2373                         return;
2374                 }
2375         }
2376
2377         mmp_s = current_fs->mmp_buf;
2378
2379         retval = ext2fs_mmp_read(current_fs, mmp_block, current_fs->mmp_buf);
2380         if (retval) {
2381                 com_err(argv[0], retval, "reading MMP block %llu.\n",
2382                         mmp_block);
2383                 return;
2384         }
2385
2386         t = mmp_s->mmp_time;
2387         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2388         fprintf(stdout, "update_interval: %d\n",
2389                 current_fs->super->s_mmp_update_interval);
2390         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2391         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2392         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2393         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2394         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2395         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2396         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2397 }
2398 #else
2399 void do_dump_mmp(int argc EXT2FS_ATTR((unused)),
2400                  char *argv[] EXT2FS_ATTR((unused)))
2401 {
2402         fprintf(stdout, "MMP is unsupported, please recompile with "
2403                         "--enable-mmp\n");
2404 }
2405 #endif
2406
2407 static int source_file(const char *cmd_file, int ss_idx)
2408 {
2409         FILE            *f;
2410         char            buf[BUFSIZ];
2411         char            *cp;
2412         int             exit_status = 0;
2413         int             retval;
2414
2415         if (strcmp(cmd_file, "-") == 0)
2416                 f = stdin;
2417         else {
2418                 f = fopen(cmd_file, "r");
2419                 if (!f) {
2420                         perror(cmd_file);
2421                         exit(1);
2422                 }
2423         }
2424         fflush(stdout);
2425         fflush(stderr);
2426         setbuf(stdout, NULL);
2427         setbuf(stderr, NULL);
2428         while (!feof(f)) {
2429                 if (fgets(buf, sizeof(buf), f) == NULL)
2430                         break;
2431                 cp = strchr(buf, '\n');
2432                 if (cp)
2433                         *cp = 0;
2434                 cp = strchr(buf, '\r');
2435                 if (cp)
2436                         *cp = 0;
2437                 printf("debugfs: %s\n", buf);
2438                 retval = ss_execute_line(ss_idx, buf);
2439                 if (retval) {
2440                         ss_perror(ss_idx, retval, buf);
2441                         exit_status++;
2442                 }
2443         }
2444         if (f != stdin)
2445                 fclose(f);
2446         return exit_status;
2447 }
2448
2449 int main(int argc, char **argv)
2450 {
2451         int             retval;
2452         const char      *usage =
2453                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2454                 "[-R request] [-d data_source_device] [-i] [-n] [-D] [-V] ["
2455 #ifndef READ_ONLY
2456                 "[-w] [-z undo_file] "
2457 #endif
2458                 "[-c]] [device]";
2459         int             c;
2460         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2461         char            *request = 0;
2462         int             exit_status = 0;
2463         char            *cmd_file = 0;
2464         blk64_t         superblock = 0;
2465         blk64_t         blocksize = 0;
2466         int             catastrophic = 0;
2467         char            *data_filename = 0;
2468 #ifdef READ_ONLY
2469         const char      *opt_string = "nicR:f:b:s:Vd:D";
2470 #else
2471         const char      *opt_string = "niwcR:f:b:s:Vd:Dz:";
2472         char            *undo_file = NULL;
2473 #endif
2474 #ifdef CONFIG_JBD_DEBUG
2475         char            *jbd_debug;
2476 #endif
2477
2478         if (debug_prog_name == 0)
2479 #ifdef READ_ONLY
2480                 debug_prog_name = "rdebugfs";
2481 #else
2482                 debug_prog_name = "debugfs";
2483 #endif
2484         add_error_table(&et_ext2_error_table);
2485         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2486                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2487
2488 #ifdef CONFIG_JBD_DEBUG
2489         jbd_debug = ss_safe_getenv("DEBUGFS_JBD_DEBUG");
2490         if (jbd_debug) {
2491                 int res = sscanf(jbd_debug, "%d", &journal_enable_debug);
2492
2493                 if (res != 1) {
2494                         fprintf(stderr,
2495                                 "DEBUGFS_JBD_DEBUG \"%s\" not an integer\n\n",
2496                                 jbd_debug);
2497                         exit(1);
2498                 }
2499         }
2500 #endif
2501         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2502                 switch (c) {
2503                 case 'R':
2504                         request = optarg;
2505                         break;
2506                 case 'f':
2507                         cmd_file = optarg;
2508                         break;
2509                 case 'd':
2510                         data_filename = optarg;
2511                         break;
2512                 case 'i':
2513                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2514                         break;
2515                 case 'n':
2516                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2517                         break;
2518 #ifndef READ_ONLY
2519                 case 'w':
2520                         open_flags |= EXT2_FLAG_RW;
2521                         break;
2522 #endif
2523                 case 'D':
2524                         open_flags |= EXT2_FLAG_DIRECT_IO;
2525                         break;
2526                 case 'b':
2527                         blocksize = parse_ulong(optarg, argv[0],
2528                                                 "block size", 0);
2529                         break;
2530                 case 's':
2531                         retval = strtoblk(argv[0], optarg,
2532                                           "superblock block number",
2533                                           &superblock);
2534                         if (retval)
2535                                 return 1;
2536                         break;
2537                 case 'c':
2538                         catastrophic = 1;
2539                         break;
2540                 case 'V':
2541                         /* Print version number and exit */
2542                         fprintf(stderr, "\tUsing %s\n",
2543                                 error_message(EXT2_ET_BASE));
2544                         exit(0);
2545                 case 'z':
2546                         undo_file = optarg;
2547                         break;
2548                 default:
2549                         com_err(argv[0], 0, usage, debug_prog_name);
2550                         return 1;
2551                 }
2552         }
2553         if (optind < argc)
2554                 open_filesystem(argv[optind], open_flags,
2555                                 superblock, blocksize, catastrophic,
2556                                 data_filename, undo_file);
2557
2558         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2559                                        &debug_cmds, &retval);
2560         if (retval) {
2561                 ss_perror(sci_idx, retval, "creating invocation");
2562                 exit(1);
2563         }
2564         ss_get_readline(sci_idx);
2565
2566         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2567         if (retval) {
2568                 ss_perror(sci_idx, retval, "adding standard requests");
2569                 exit (1);
2570         }
2571         if (extra_cmds)
2572                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2573         if (retval) {
2574                 ss_perror(sci_idx, retval, "adding extra requests");
2575                 exit (1);
2576         }
2577         if (request) {
2578                 retval = 0;
2579                 retval = ss_execute_line(sci_idx, request);
2580                 if (retval) {
2581                         ss_perror(sci_idx, retval, request);
2582                         exit_status++;
2583                 }
2584         } else if (cmd_file) {
2585                 exit_status = source_file(cmd_file, sci_idx);
2586         } else {
2587                 ss_listen(sci_idx);
2588         }
2589
2590         ss_delete_invocation(sci_idx);
2591
2592         if (current_fs)
2593                 close_filesystem();
2594
2595         remove_error_table(&et_ext2_error_table);
2596         return exit_status;
2597 }