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 #ifdef HAVE_GETOPT_H
  19 #include <getopt.h>
  20 #else
  21 extern int optind;
  22 extern char *optarg;
  23 #endif
  24 #ifdef HAVE_ERRNO_H
  25 #include <errno.h>
  26 #endif
  27 #include <fcntl.h>
  28
  29 #include "debugfs.h"
  30 #include "uuid/uuid.h"
  31 #include "e2p/e2p.h"
  32
  33 #include <ext2fs/ext2_ext_attr.h>
  34
  35 #include "../version.h"
  36 #include "jfs_user.h"
  37 #include "../misc/plausible.h"
  38
  39 #ifndef BUFSIZ
  40 #define BUFSIZ 8192
  41 #endif
  42
  43 ss_request_table *extra_cmds;
  44 const char *debug_prog_name;
  45 int sci_idx;
  46
  47 ext2_filsys     current_fs;
  48 quota_ctx_t     current_qctx;
  49 ext2_ino_t      root, cwd;
  50
  51 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
  52                             blk64_t blocksize, int catastrophic,
  53                             char *data_filename)
  54 {
  55         int     retval;
  56         io_channel data_io = 0;
  57
  58         if (superblock != 0 && blocksize == 0) {
  59                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  60                 current_fs = NULL;
  61                 return;
  62         }
  63
  64         if (data_filename) {
  65                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  66                         com_err(device, 0,
  67                                 "The -d option is only valid when reading an e2image file");
  68                         current_fs = NULL;
  69                         return;
  70                 }
  71                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  72                 if (retval) {
  73                         com_err(data_filename, 0, "while opening data source");
  74                         current_fs = NULL;
  75                         return;
  76                 }
  77         }
  78
  79         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  80                 com_err(device, 0,
  81                         "opening read-only because of catastrophic mode");
  82                 open_flags &= ~EXT2_FLAG_RW;
  83         }
  84         if (catastrophic)
  85                 open_flags |= EXT2_FLAG_SKIP_MMP;
  86
  87         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  88                              unix_io_manager, &current_fs);
  89         if (retval) {
  90                 com_err(device, retval, "while opening filesystem");
  91                 if (retval == EXT2_ET_BAD_MAGIC)
  92                         check_plausibility(device, CHECK_FS_EXIST, NULL);
  93                 current_fs = NULL;
  94                 return;
  95         }
  96         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
  97
  98         if (catastrophic)
  99                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 100         else {
 101                 retval = ext2fs_read_inode_bitmap(current_fs);
 102                 if (retval) {
 103                         com_err(device, retval, "while reading inode bitmap");
 104                         goto errout;
 105                 }
 106                 retval = ext2fs_read_block_bitmap(current_fs);
 107                 if (retval) {
 108                         com_err(device, retval, "while reading block bitmap");
 109                         goto errout;
 110                 }
 111         }
 112
 113         if (data_io) {
 114                 retval = ext2fs_set_data_io(current_fs, data_io);
 115                 if (retval) {
 116                         com_err(device, retval,
 117                                 "while setting data source");
 118                         goto errout;
 119                 }
 120         }
 121
 122         root = cwd = EXT2_ROOT_INO;
 123         return;
 124
 125 errout:
 126         retval = ext2fs_close_free(&current_fs);
 127         if (retval)
 128                 com_err(device, retval, "while trying to close filesystem");
 129 }
 130
 131 void do_open_filesys(int argc, char **argv)
 132 {
 133         int     c, err;
 134         int     catastrophic = 0;
 135         blk64_t superblock = 0;
 136         blk64_t blocksize = 0;
 137         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 138         char    *data_filename = 0;
 139
 140         reset_getopt();
 141         while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
 142                 switch (c) {
 143                 case 'i':
 144                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 145                         break;
 146                 case 'w':
 147 #ifdef READ_ONLY
 148                         goto print_usage;
 149 #else
 150                         open_flags |= EXT2_FLAG_RW;
 151 #endif /* READ_ONLY */
 152                         break;
 153                 case 'f':
 154                         open_flags |= EXT2_FLAG_FORCE;
 155                         break;
 156                 case 'e':
 157                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 158                         break;
 159                 case 'c':
 160                         catastrophic = 1;
 161                         break;
 162                 case 'd':
 163                         data_filename = optarg;
 164                         break;
 165                 case 'D':
 166                         open_flags |= EXT2_FLAG_DIRECT_IO;
 167                         break;
 168                 case 'b':
 169                         blocksize = parse_ulong(optarg, argv[0],
 170                                                 "block size", &err);
 171                         if (err)
 172                                 return;
 173                         break;
 174                 case 's':
 175                         err = strtoblk(argv[0], optarg,
 176                                        "superblock block number", &superblock);
 177                         if (err)
 178                                 return;
 179                         break;
 180                 default:
 181                         goto print_usage;
 182                 }
 183         }
 184         if (optind != argc-1) {
 185                 goto print_usage;
 186         }
 187         if (check_fs_not_open(argv[0]))
 188                 return;
 189         open_filesystem(argv[optind], open_flags,
 190                         superblock, blocksize, catastrophic,
 191                         data_filename);
 192         return;
 193
 194 print_usage:
 195         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 196                 "[-d image_filename] [-c] [-i] [-f] [-e] [-D] "
 197 #ifndef READ_ONLY
 198                 "[-w] "
 199 #endif
 200                 "<device>\n", argv[0]);
 201 }
 202
 203 void do_lcd(int argc, char **argv)
 204 {
 205         if (argc != 2) {
 206                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 207                 return;
 208         }
 209
 210         if (chdir(argv[1]) == -1) {
 211                 com_err(argv[0], errno,
 212                         "while trying to change native directory to %s",
 213                         argv[1]);
 214                 return;
 215         }
 216 }
 217
 218 static void close_filesystem(NOARGS)
 219 {
 220         int     retval;
 221
 222         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 223                 retval = ext2fs_write_inode_bitmap(current_fs);
 224                 if (retval)
 225                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 226         }
 227         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 228                 retval = ext2fs_write_block_bitmap(current_fs);
 229                 if (retval)
 230                         com_err("ext2fs_write_block_bitmap", retval, 0);
 231         }
 232         if (current_qctx)
 233                 quota_release_context(&current_qctx);
 234         retval = ext2fs_close_free(&current_fs);
 235         if (retval)
 236                 com_err("ext2fs_close", retval, 0);
 237         return;
 238 }
 239
 240 void do_close_filesys(int argc, char **argv)
 241 {
 242         int     c;
 243
 244         if (check_fs_open(argv[0]))
 245                 return;
 246
 247         reset_getopt();
 248         while ((c = getopt (argc, argv, "a")) != EOF) {
 249                 switch (c) {
 250                 case 'a':
 251                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 252                         break;
 253                 default:
 254                         goto print_usage;
 255                 }
 256         }
 257
 258         if (argc > optind) {
 259         print_usage:
 260                 com_err(0, 0, "Usage: close_filesys [-a]");
 261                 return;
 262         }
 263
 264         close_filesystem();
 265 }
 266
 267 #ifndef READ_ONLY
 268 void do_init_filesys(int argc, char **argv)
 269 {
 270         struct ext2_super_block param;
 271         errcode_t       retval;
 272         int             err;
 273         blk64_t         blocks;
 274
 275         if (common_args_process(argc, argv, 3, 3, "initialize",
 276                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 277                 return;
 278
 279         memset(&param, 0, sizeof(struct ext2_super_block));
 280         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 281         if (err)
 282                 return;
 283         ext2fs_blocks_count_set(&param, blocks);
 284         retval = ext2fs_initialize(argv[1], 0, &param,
 285                                    unix_io_manager, &current_fs);
 286         if (retval) {
 287                 com_err(argv[1], retval, "while initializing filesystem");
 288                 current_fs = NULL;
 289                 return;
 290         }
 291         root = cwd = EXT2_ROOT_INO;
 292         return;
 293 }
 294
 295 static void print_features(struct ext2_super_block * s, FILE *f)
 296 {
 297         int     i, j, printed=0;
 298         __u32   *mask = &s->s_feature_compat, m;
 299
 300         fputs("Filesystem features:", f);
 301         for (i=0; i <3; i++,mask++) {
 302                 for (j=0,m=1; j < 32; j++, m<<=1) {
 303                         if (*mask & m) {
 304                                 fprintf(f, " %s", e2p_feature2string(i, m));
 305                                 printed++;
 306                         }
 307                 }
 308         }
 309         if (printed == 0)
 310                 fputs("(none)", f);
 311         fputs("\n", f);
 312 }
 313 #endif /* READ_ONLY */
 314
 315 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 316                           const char *str, int *first, FILE *f)
 317 {
 318         if (ext2fs_bg_flags_test(fs, group, mask)) {
 319                 if (*first) {
 320                         fputs("           [", f);
 321                         *first = 0;
 322                 } else
 323                         fputs(", ", f);
 324                 fputs(str, f);
 325         }
 326 }
 327
 328 void do_show_super_stats(int argc, char *argv[])
 329 {
 330         const char *units ="block";
 331         dgrp_t  i;
 332         FILE    *out;
 333         int     c, header_only = 0;
 334         int     numdirs = 0, first, gdt_csum;
 335
 336         reset_getopt();
 337         while ((c = getopt (argc, argv, "h")) != EOF) {
 338                 switch (c) {
 339                 case 'h':
 340                         header_only++;
 341                         break;
 342                 default:
 343                         goto print_usage;
 344                 }
 345         }
 346         if (optind != argc) {
 347                 goto print_usage;
 348         }
 349         if (check_fs_open(argv[0]))
 350                 return;
 351         out = open_pager();
 352
 353         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 354                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 355                 units = "cluster";
 356
 357         list_super2(current_fs->super, out);
 358         for (i=0; i < current_fs->group_desc_count; i++)
 359                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 360         fprintf(out, "Directories:              %d\n", numdirs);
 361
 362         if (header_only) {
 363                 close_pager(out);
 364                 return;
 365         }
 366
 367         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 368         for (i = 0; i < current_fs->group_desc_count; i++) {
 369                 fprintf(out, " Group %2d: block bitmap at %llu, "
 370                         "inode bitmap at %llu, "
 371                         "inode table at %llu\n"
 372                         "           %u free %s%s, "
 373                         "%u free %s, "
 374                         "%u used %s%s",
 375                         i, ext2fs_block_bitmap_loc(current_fs, i),
 376                         ext2fs_inode_bitmap_loc(current_fs, i),
 377                         ext2fs_inode_table_loc(current_fs, i),
 378                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 379                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 380                         "s" : "",
 381                         ext2fs_bg_free_inodes_count(current_fs, i),
 382                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 383                         "inodes" : "inode",
 384                         ext2fs_bg_used_dirs_count(current_fs, i),
 385                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 386                                 : "directory", gdt_csum ? ", " : "\n");
 387                 if (gdt_csum)
 388                         fprintf(out, "%u unused %s\n",
 389                                 ext2fs_bg_itable_unused(current_fs, i),
 390                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 391                                 "inodes" : "inode");
 392                 first = 1;
 393                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 394                               &first, out);
 395                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 396                               &first, out);
 397                 if (gdt_csum) {
 398                         fprintf(out, "%sChecksum 0x%04x",
 399                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 400                         first = 0;
 401                 }
 402                 if (!first)
 403                         fputs("]\n", out);
 404         }
 405         close_pager(out);
 406         return;
 407 print_usage:
 408         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 409 }
 410
 411 #ifndef READ_ONLY
 412 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 413                       char **argv EXT2FS_ATTR((unused)))
 414 {
 415         if (check_fs_open(argv[0]))
 416                 return;
 417         if (check_fs_read_write(argv[0]))
 418                 return;
 419
 420         if (argv[1] && !strcmp(argv[1], "-clean"))
 421                 current_fs->super->s_state |= EXT2_VALID_FS;
 422         else
 423                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 424         ext2fs_mark_super_dirty(current_fs);
 425 }
 426 #endif /* READ_ONLY */
 427
 428 struct list_blocks_struct {
 429         FILE            *f;
 430         e2_blkcnt_t     total;
 431         blk64_t         first_block, last_block;
 432         e2_blkcnt_t     first_bcnt, last_bcnt;
 433         e2_blkcnt_t     first;
 434 };
 435
 436 static void finish_range(struct list_blocks_struct *lb)
 437 {
 438         if (lb->first_block == 0)
 439                 return;
 440         if (lb->first)
 441                 lb->first = 0;
 442         else
 443                 fprintf(lb->f, ", ");
 444         if (lb->first_block == lb->last_block)
 445                 fprintf(lb->f, "(%lld):%llu",
 446                         (long long)lb->first_bcnt, lb->first_block);
 447         else
 448                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 449                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 450                         lb->first_block, lb->last_block);
 451         lb->first_block = 0;
 452 }
 453
 454 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 455                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 456                             blk64_t ref_block EXT2FS_ATTR((unused)),
 457                             int ref_offset EXT2FS_ATTR((unused)),
 458                             void *private)
 459 {
 460         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 461
 462         lb->total++;
 463         if (blockcnt >= 0) {
 464                 /*
 465                  * See if we can add on to the existing range (if it exists)
 466                  */
 467                 if (lb->first_block &&
 468                     (lb->last_block+1 == *blocknr) &&
 469                     (lb->last_bcnt+1 == blockcnt)) {
 470                         lb->last_block = *blocknr;
 471                         lb->last_bcnt = blockcnt;
 472                         return 0;
 473                 }
 474                 /*
 475                  * Start a new range.
 476                  */
 477                 finish_range(lb);
 478                 lb->first_block = lb->last_block = *blocknr;
 479                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 480                 return 0;
 481         }
 482         /*
 483          * Not a normal block.  Always force a new range.
 484          */
 485         finish_range(lb);
 486         if (lb->first)
 487                 lb->first = 0;
 488         else
 489                 fprintf(lb->f, ", ");
 490         if (blockcnt == -1)
 491                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 492         else if (blockcnt == -2)
 493                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 494         else if (blockcnt == -3)
 495                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 496         return 0;
 497 }
 498
 499 static void internal_dump_inode_extra(FILE *out,
 500                                       const char *prefix EXT2FS_ATTR((unused)),
 501                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 502                                       struct ext2_inode_large *inode)
 503 {
 504         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 505         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 506                         EXT2_GOOD_OLD_INODE_SIZE) {
 507                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 508                                 inode->i_extra_isize);
 509                 return;
 510         }
 511 }
 512
 513 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 514 {
 515         struct list_blocks_struct lb;
 516
 517         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 518         lb.total = 0;
 519         lb.first_block = 0;
 520         lb.f = f;
 521         lb.first = 1;
 522         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 523                               list_blocks_proc, (void *)&lb);
 524         finish_range(&lb);
 525         if (lb.total)
 526                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 527         fprintf(f,"\n");
 528 }
 529
 530 static int int_log10(unsigned long long arg)
 531 {
 532         int     l = 0;
 533
 534         arg = arg / 10;
 535         while (arg) {
 536                 l++;
 537                 arg = arg / 10;
 538         }
 539         return l;
 540 }
 541
 542 #define DUMP_LEAF_EXTENTS       0x01
 543 #define DUMP_NODE_EXTENTS       0x02
 544 #define DUMP_EXTENT_TABLE       0x04
 545
 546 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 547                          int flags, int logical_width, int physical_width)
 548 {
 549         ext2_extent_handle_t    handle;
 550         struct ext2fs_extent    extent;
 551         struct ext2_extent_info info;
 552         int                     op = EXT2_EXTENT_ROOT;
 553         unsigned int            printed = 0;
 554         errcode_t               errcode;
 555
 556         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 557         if (errcode)
 558                 return;
 559
 560         if (flags & DUMP_EXTENT_TABLE)
 561                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 562                         (logical_width*2)+3, "Logical",
 563                         (physical_width*2)+3, "Physical");
 564         else
 565                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 566
 567         while (1) {
 568                 errcode = ext2fs_extent_get(handle, op, &extent);
 569
 570                 if (errcode)
 571                         break;
 572
 573                 op = EXT2_EXTENT_NEXT;
 574
 575                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 576                         continue;
 577
 578                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 579                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 580                                 continue;
 581                 } else {
 582                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 583                                 continue;
 584                 }
 585
 586                 errcode = ext2fs_extent_get_info(handle, &info);
 587                 if (errcode)
 588                         continue;
 589
 590                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 591                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 592                                 continue;
 593
 594                         if (flags & DUMP_EXTENT_TABLE) {
 595                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 596                                         "%*llu%*s %6u\n",
 597                                         info.curr_level, info.max_depth,
 598                                         info.curr_entry, info.num_entries,
 599                                         logical_width,
 600                                         extent.e_lblk,
 601                                         logical_width,
 602                                         extent.e_lblk + (extent.e_len - 1),
 603                                         physical_width,
 604                                         extent.e_pblk,
 605                                         physical_width+3, "", extent.e_len);
 606                                 continue;
 607                         }
 608
 609                         fprintf(f, "%s(ETB%d):%lld",
 610                                 printed ? ", " : "", info.curr_level,
 611                                 extent.e_pblk);
 612                         printed = 1;
 613                         continue;
 614                 }
 615
 616                 if (flags & DUMP_EXTENT_TABLE) {
 617                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 618                                 "%*llu - %*llu %6u %s\n",
 619                                 info.curr_level, info.max_depth,
 620                                 info.curr_entry, info.num_entries,
 621                                 logical_width,
 622                                 extent.e_lblk,
 623                                 logical_width,
 624                                 extent.e_lblk + (extent.e_len - 1),
 625                                 physical_width,
 626                                 extent.e_pblk,
 627                                 physical_width,
 628                                 extent.e_pblk + (extent.e_len - 1),
 629                                 extent.e_len,
 630                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 631                                         "Uninit" : "");
 632                         continue;
 633                 }
 634
 635                 if (extent.e_len == 0)
 636                         continue;
 637                 else if (extent.e_len == 1)
 638                         fprintf(f,
 639                                 "%s(%lld%s):%lld",
 640                                 printed ? ", " : "",
 641                                 extent.e_lblk,
 642                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 643                                 "[u]" : "",
 644                                 extent.e_pblk);
 645                 else
 646                         fprintf(f,
 647                                 "%s(%lld-%lld%s):%lld-%lld",
 648                                 printed ? ", " : "",
 649                                 extent.e_lblk,
 650                                 extent.e_lblk + (extent.e_len - 1),
 651                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 652                                         "[u]" : "",
 653                                 extent.e_pblk,
 654                                 extent.e_pblk + (extent.e_len - 1));
 655                 printed = 1;
 656         }
 657         if (printed)
 658                 fprintf(f, "\n");
 659         ext2fs_extent_free(handle);
 660 }
 661
 662 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 663 {
 664         errcode_t retval;
 665         size_t size;
 666
 667         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 668         if (!retval)
 669                 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
 670 }
 671
 672 static void dump_fast_link(FILE *out, ext2_ino_t inode_num,
 673                            struct ext2_inode *inode, const char *prefix)
 674 {
 675         errcode_t retval = 0;
 676         char *buf;
 677         size_t size;
 678
 679         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
 680                 retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 681                 if (retval)
 682                         goto out;
 683
 684                 retval = ext2fs_get_memzero(size + 1, &buf);
 685                 if (retval)
 686                         goto out;
 687
 688                 retval = ext2fs_inline_data_get(current_fs, inode_num,
 689                                                 inode, buf, &size);
 690                 if (retval)
 691                         goto out;
 692                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 693                         (int)size, buf);
 694
 695                 retval = ext2fs_free_mem(&buf);
 696                 if (retval)
 697                         goto out;
 698         } else {
 699                 int sz = EXT2_I_SIZE(inode);
 700
 701                 if (sz > sizeof(inode->i_block))
 702                         sz = sizeof(inode->i_block);
 703                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix, sz,
 704                         (char *)inode->i_block);
 705         }
 706 out:
 707         if (retval)
 708                 com_err(__func__, retval, "while dumping link destination");
 709 }
 710
 711 void internal_dump_inode(FILE *out, const char *prefix,
 712                          ext2_ino_t inode_num, struct ext2_inode *inode,
 713                          int do_dump_blocks)
 714 {
 715         const char *i_type;
 716         char frag, fsize;
 717         int os = current_fs->super->s_creator_os;
 718         struct ext2_inode_large *large_inode;
 719         int is_large_inode = 0;
 720
 721         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 722                 is_large_inode = 1;
 723         large_inode = (struct ext2_inode_large *) inode;
 724
 725         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 726         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 727         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 728         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 729         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 730         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 731         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 732         else i_type = "bad type";
 733         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 734         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 735                 prefix, inode->i_mode & 0777, inode->i_flags);
 736         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 737                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 738                         prefix, inode->i_generation, large_inode->i_version_hi,
 739                         inode->osd1.linux1.l_i_version);
 740         } else {
 741                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 742                         inode->i_generation, inode->osd1.linux1.l_i_version);
 743         }
 744         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 745                 prefix, inode_uid(*inode), inode_gid(*inode));
 746         if (LINUX_S_ISREG(inode->i_mode))
 747                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 748         else
 749                 fprintf(out, "%d\n", inode->i_size);
 750         if (os == EXT2_OS_HURD)
 751                 fprintf(out,
 752                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 753                         prefix,
 754                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 755                         inode->osd1.hurd1.h_i_translator);
 756         else
 757                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 758                         prefix,
 759                         inode->i_file_acl | ((long long)
 760                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 761                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 762         if (os == EXT2_OS_LINUX)
 763                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 764                         prefix, inode->i_links_count,
 765                         (((unsigned long long)
 766                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 767                         inode->i_blocks);
 768         else
 769                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 770                         prefix, inode->i_links_count, inode->i_blocks);
 771         switch (os) {
 772             case EXT2_OS_HURD:
 773                 frag = inode->osd2.hurd2.h_i_frag;
 774                 fsize = inode->osd2.hurd2.h_i_fsize;
 775                 break;
 776             default:
 777                 frag = fsize = 0;
 778         }
 779         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 780                 prefix, inode->i_faddr, frag, fsize);
 781         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 782                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 783                         inode->i_ctime, large_inode->i_ctime_extra,
 784                         time_to_string(inode->i_ctime));
 785                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 786                         inode->i_atime, large_inode->i_atime_extra,
 787                         time_to_string(inode->i_atime));
 788                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 789                         inode->i_mtime, large_inode->i_mtime_extra,
 790                         time_to_string(inode->i_mtime));
 791                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 792                         large_inode->i_crtime, large_inode->i_crtime_extra,
 793                         time_to_string(large_inode->i_crtime));
 794         } else {
 795                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 796                         time_to_string(inode->i_ctime));
 797                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 798                         time_to_string(inode->i_atime));
 799                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 800                         time_to_string(inode->i_mtime));
 801         }
 802         if (inode->i_dtime)
 803           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 804                   time_to_string(inode->i_dtime));
 805         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 806                 internal_dump_inode_extra(out, prefix, inode_num,
 807                                           (struct ext2_inode_large *) inode);
 808         dump_inode_attributes(out, inode_num);
 809         if (current_fs->super->s_creator_os == EXT2_OS_LINUX &&
 810             current_fs->super->s_feature_ro_compat &
 811                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
 812                 __u32 crc = inode->i_checksum_lo;
 813                 if (is_large_inode &&
 814                     large_inode->i_extra_isize >=
 815                                 (offsetof(struct ext2_inode_large,
 816                                           i_checksum_hi) -
 817                                  EXT2_GOOD_OLD_INODE_SIZE))
 818                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 819                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 820         }
 821
 822         if (LINUX_S_ISLNK(inode->i_mode) &&
 823             ext2fs_inode_data_blocks(current_fs, inode) == 0)
 824                 dump_fast_link(out, inode_num, inode, prefix);
 825         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 826                 int major, minor;
 827                 const char *devnote;
 828
 829                 if (inode->i_block[0]) {
 830                         major = (inode->i_block[0] >> 8) & 255;
 831                         minor = inode->i_block[0] & 255;
 832                         devnote = "";
 833                 } else {
 834                         major = (inode->i_block[1] & 0xfff00) >> 8;
 835                         minor = ((inode->i_block[1] & 0xff) |
 836                                  ((inode->i_block[1] >> 12) & 0xfff00));
 837                         devnote = "(New-style) ";
 838                 }
 839                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 840                         devnote, major, minor, major, minor);
 841         } else if (do_dump_blocks) {
 842                 if (inode->i_flags & EXT4_EXTENTS_FL)
 843                         dump_extents(out, prefix, inode_num,
 844                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 845                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 846                         dump_inline_data(out, prefix, inode_num);
 847                 else
 848                         dump_blocks(out, prefix, inode_num);
 849         }
 850 }
 851
 852 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 853 {
 854         FILE    *out;
 855
 856         out = open_pager();
 857         internal_dump_inode(out, "", inode_num, inode, 1);
 858         close_pager(out);
 859 }
 860
 861 void do_stat(int argc, char *argv[])
 862 {
 863         ext2_ino_t      inode;
 864         struct ext2_inode * inode_buf;
 865
 866         if (check_fs_open(argv[0]))
 867                 return;
 868
 869         inode_buf = (struct ext2_inode *)
 870                         malloc(EXT2_INODE_SIZE(current_fs->super));
 871         if (!inode_buf) {
 872                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 873                 return;
 874         }
 875
 876         if (common_inode_args_process(argc, argv, &inode, 0)) {
 877                 free(inode_buf);
 878                 return;
 879         }
 880
 881         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 882                                         EXT2_INODE_SIZE(current_fs->super))) {
 883                 free(inode_buf);
 884                 return;
 885         }
 886
 887         dump_inode(inode, inode_buf);
 888         free(inode_buf);
 889         return;
 890 }
 891
 892 void do_dump_extents(int argc, char **argv)
 893 {
 894         struct ext2_inode inode;
 895         ext2_ino_t      ino;
 896         FILE            *out;
 897         int             c, flags = 0;
 898         int             logical_width;
 899         int             physical_width;
 900
 901         reset_getopt();
 902         while ((c = getopt(argc, argv, "nl")) != EOF) {
 903                 switch (c) {
 904                 case 'n':
 905                         flags |= DUMP_NODE_EXTENTS;
 906                         break;
 907                 case 'l':
 908                         flags |= DUMP_LEAF_EXTENTS;
 909                         break;
 910                 }
 911         }
 912
 913         if (argc != optind + 1) {
 914                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 915                 return;
 916         }
 917
 918         if (flags == 0)
 919                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 920         flags |= DUMP_EXTENT_TABLE;
 921
 922         if (check_fs_open(argv[0]))
 923                 return;
 924
 925         ino = string_to_inode(argv[optind]);
 926         if (ino == 0)
 927                 return;
 928
 929         if (debugfs_read_inode(ino, &inode, argv[0]))
 930                 return;
 931
 932         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 933                 fprintf(stderr, "%s: does not uses extent block maps\n",
 934                         argv[optind]);
 935                 return;
 936         }
 937
 938         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 939                                   current_fs->blocksize) + 1;
 940         if (logical_width < 5)
 941                 logical_width = 5;
 942         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 943         if (physical_width < 5)
 944                 physical_width = 5;
 945
 946         out = open_pager();
 947         dump_extents(out, "", ino, flags, logical_width, physical_width);
 948         close_pager(out);
 949         return;
 950 }
 951
 952 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 953                              blk64_t *blocknr,
 954                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 955                              blk64_t ref_block EXT2FS_ATTR((unused)),
 956                              int ref_offset EXT2FS_ATTR((unused)),
 957                              void *private EXT2FS_ATTR((unused)))
 958 {
 959         printf("%llu ", *blocknr);
 960         return 0;
 961 }
 962
 963 void do_blocks(int argc, char *argv[])
 964 {
 965         ext2_ino_t      inode;
 966
 967         if (check_fs_open(argv[0]))
 968                 return;
 969
 970         if (common_inode_args_process(argc, argv, &inode, 0)) {
 971                 return;
 972         }
 973
 974         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 975                               print_blocks_proc, NULL);
 976         fputc('\n', stdout);
 977         return;
 978 }
 979
 980 void do_chroot(int argc, char *argv[])
 981 {
 982         ext2_ino_t inode;
 983         int retval;
 984
 985         if (common_inode_args_process(argc, argv, &inode, 0))
 986                 return;
 987
 988         retval = ext2fs_check_directory(current_fs, inode);
 989         if (retval)  {
 990                 com_err(argv[1], retval, 0);
 991                 return;
 992         }
 993         root = inode;
 994 }
 995
 996 #ifndef READ_ONLY
 997 void do_clri(int argc, char *argv[])
 998 {
 999         ext2_ino_t inode;
1000         struct ext2_inode inode_buf;
1001
1002         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1003                 return;
1004
1005         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1006                 return;
1007         memset(&inode_buf, 0, sizeof(inode_buf));
1008         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1009                 return;
1010 }
1011
1012 void do_freei(int argc, char *argv[])
1013 {
1014         unsigned int    len = 1;
1015         int             err = 0;
1016         ext2_ino_t      inode;
1017
1018         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1019                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1020                 return;
1021         if (check_fs_read_write(argv[0]))
1022                 return;
1023
1024         inode = string_to_inode(argv[1]);
1025         if (!inode)
1026                 return;
1027
1028         if (argc == 3) {
1029                 len = parse_ulong(argv[2], argv[0], "length", &err);
1030                 if (err)
1031                         return;
1032         }
1033
1034         if (len == 1 &&
1035             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1036                 com_err(argv[0], 0, "Warning: inode already clear");
1037         while (len-- > 0)
1038                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1039         ext2fs_mark_ib_dirty(current_fs);
1040 }
1041
1042 void do_seti(int argc, char *argv[])
1043 {
1044         unsigned int    len = 1;
1045         int             err = 0;
1046         ext2_ino_t      inode;
1047
1048         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1049                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1050                 return;
1051         if (check_fs_read_write(argv[0]))
1052                 return;
1053
1054         inode = string_to_inode(argv[1]);
1055         if (!inode)
1056                 return;
1057
1058         if (argc == 3) {
1059                 len = parse_ulong(argv[2], argv[0], "length", &err);
1060                 if (err)
1061                         return;
1062         }
1063
1064         if ((len == 1) &&
1065             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1066                 com_err(argv[0], 0, "Warning: inode already set");
1067         while (len-- > 0)
1068                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1069         ext2fs_mark_ib_dirty(current_fs);
1070 }
1071 #endif /* READ_ONLY */
1072
1073 void do_testi(int argc, char *argv[])
1074 {
1075         ext2_ino_t inode;
1076
1077         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1078                 return;
1079
1080         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1081                 printf("Inode %u is marked in use\n", inode);
1082         else
1083                 printf("Inode %u is not in use\n", inode);
1084 }
1085
1086 #ifndef READ_ONLY
1087 void do_freeb(int argc, char *argv[])
1088 {
1089         blk64_t block;
1090         blk64_t count = 1;
1091
1092         if (common_block_args_process(argc, argv, &block, &count))
1093                 return;
1094         if (check_fs_read_write(argv[0]))
1095                 return;
1096         while (count-- > 0) {
1097                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1098                         com_err(argv[0], 0, "Warning: block %llu already clear",
1099                                 block);
1100                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1101                 block++;
1102         }
1103         ext2fs_mark_bb_dirty(current_fs);
1104 }
1105
1106 void do_setb(int argc, char *argv[])
1107 {
1108         blk64_t block;
1109         blk64_t count = 1;
1110
1111         if (common_block_args_process(argc, argv, &block, &count))
1112                 return;
1113         if (check_fs_read_write(argv[0]))
1114                 return;
1115         while (count-- > 0) {
1116                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1117                         com_err(argv[0], 0, "Warning: block %llu already set",
1118                                 block);
1119                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1120                 block++;
1121         }
1122         ext2fs_mark_bb_dirty(current_fs);
1123 }
1124 #endif /* READ_ONLY */
1125
1126 void do_testb(int argc, char *argv[])
1127 {
1128         blk64_t block;
1129         blk64_t count = 1;
1130
1131         if (common_block_args_process(argc, argv, &block, &count))
1132                 return;
1133         while (count-- > 0) {
1134                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1135                         printf("Block %llu marked in use\n", block);
1136                 else
1137                         printf("Block %llu not in use\n", block);
1138                 block++;
1139         }
1140 }
1141
1142 #ifndef READ_ONLY
1143 static void modify_u8(char *com, const char *prompt,
1144                       const char *format, __u8 *val)
1145 {
1146         char buf[200];
1147         unsigned long v;
1148         char *tmp;
1149
1150         sprintf(buf, format, *val);
1151         printf("%30s    [%s] ", prompt, buf);
1152         if (!fgets(buf, sizeof(buf), stdin))
1153                 return;
1154         if (buf[strlen (buf) - 1] == '\n')
1155                 buf[strlen (buf) - 1] = '\0';
1156         if (!buf[0])
1157                 return;
1158         v = strtoul(buf, &tmp, 0);
1159         if (*tmp)
1160                 com_err(com, 0, "Bad value - %s", buf);
1161         else
1162                 *val = v;
1163 }
1164
1165 static void modify_u16(char *com, const char *prompt,
1166                        const char *format, __u16 *val)
1167 {
1168         char buf[200];
1169         unsigned long v;
1170         char *tmp;
1171
1172         sprintf(buf, format, *val);
1173         printf("%30s    [%s] ", prompt, buf);
1174         if (!fgets(buf, sizeof(buf), stdin))
1175                 return;
1176         if (buf[strlen (buf) - 1] == '\n')
1177                 buf[strlen (buf) - 1] = '\0';
1178         if (!buf[0])
1179                 return;
1180         v = strtoul(buf, &tmp, 0);
1181         if (*tmp)
1182                 com_err(com, 0, "Bad value - %s", buf);
1183         else
1184                 *val = v;
1185 }
1186
1187 static void modify_u32(char *com, const char *prompt,
1188                        const char *format, __u32 *val)
1189 {
1190         char buf[200];
1191         unsigned long v;
1192         char *tmp;
1193
1194         sprintf(buf, format, *val);
1195         printf("%30s    [%s] ", prompt, buf);
1196         if (!fgets(buf, sizeof(buf), stdin))
1197                 return;
1198         if (buf[strlen (buf) - 1] == '\n')
1199                 buf[strlen (buf) - 1] = '\0';
1200         if (!buf[0])
1201                 return;
1202         v = strtoul(buf, &tmp, 0);
1203         if (*tmp)
1204                 com_err(com, 0, "Bad value - %s", buf);
1205         else
1206                 *val = v;
1207 }
1208
1209
1210 void do_modify_inode(int argc, char *argv[])
1211 {
1212         struct ext2_inode inode;
1213         ext2_ino_t      inode_num;
1214         int             i;
1215         unsigned char   *frag, *fsize;
1216         char            buf[80];
1217         int             os;
1218         const char      *hex_format = "0x%x";
1219         const char      *octal_format = "0%o";
1220         const char      *decimal_format = "%d";
1221         const char      *unsignedlong_format = "%lu";
1222
1223         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1224                 return;
1225
1226         os = current_fs->super->s_creator_os;
1227
1228         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1229                 return;
1230
1231         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1232         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1233         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1234         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1235         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1236         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1237         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1238         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1239         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1240         if (os == EXT2_OS_LINUX)
1241                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1242                            &inode.osd2.linux2.l_i_blocks_hi);
1243         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1244         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1245         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1246 #if 0
1247         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1248 #endif
1249         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1250         if (LINUX_S_ISDIR(inode.i_mode))
1251                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1252         else
1253                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1254
1255         if (os == EXT2_OS_HURD)
1256                 modify_u32(argv[0], "Translator Block",
1257                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1258
1259         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1260         switch (os) {
1261             case EXT2_OS_HURD:
1262                 frag = &inode.osd2.hurd2.h_i_frag;
1263                 fsize = &inode.osd2.hurd2.h_i_fsize;
1264                 break;
1265             default:
1266                 frag = fsize = 0;
1267         }
1268         if (frag)
1269                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1270         if (fsize)
1271                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1272
1273         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1274                 sprintf(buf, "Direct Block #%d", i);
1275                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1276         }
1277         modify_u32(argv[0], "Indirect Block", decimal_format,
1278                     &inode.i_block[EXT2_IND_BLOCK]);
1279         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1280                     &inode.i_block[EXT2_DIND_BLOCK]);
1281         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1282                     &inode.i_block[EXT2_TIND_BLOCK]);
1283         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1284                 return;
1285 }
1286 #endif /* READ_ONLY */
1287
1288 void do_change_working_dir(int argc, char *argv[])
1289 {
1290         ext2_ino_t      inode;
1291         int             retval;
1292
1293         if (common_inode_args_process(argc, argv, &inode, 0))
1294                 return;
1295
1296         retval = ext2fs_check_directory(current_fs, inode);
1297         if (retval) {
1298                 com_err(argv[1], retval, 0);
1299                 return;
1300         }
1301         cwd = inode;
1302         return;
1303 }
1304
1305 void do_print_working_directory(int argc, char *argv[])
1306 {
1307         int     retval;
1308         char    *pathname = NULL;
1309
1310         if (common_args_process(argc, argv, 1, 1,
1311                                 "print_working_directory", "", 0))
1312                 return;
1313
1314         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1315         if (retval) {
1316                 com_err(argv[0], retval,
1317                         "while trying to get pathname of cwd");
1318         }
1319         printf("[pwd]   INODE: %6u  PATH: %s\n",
1320                cwd, pathname ? pathname : "NULL");
1321         if (pathname) {
1322                 free(pathname);
1323                 pathname = NULL;
1324         }
1325         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1326         if (retval) {
1327                 com_err(argv[0], retval,
1328                         "while trying to get pathname of root");
1329         }
1330         printf("[root]  INODE: %6u  PATH: %s\n",
1331                root, pathname ? pathname : "NULL");
1332         if (pathname) {
1333                 free(pathname);
1334                 pathname = NULL;
1335         }
1336         return;
1337 }
1338
1339 #ifndef READ_ONLY
1340 static void make_link(char *sourcename, char *destname)
1341 {
1342         ext2_ino_t      ino;
1343         struct ext2_inode inode;
1344         int             retval;
1345         ext2_ino_t      dir;
1346         char            *dest, *cp, *base_name;
1347
1348         /*
1349          * Get the source inode
1350          */
1351         ino = string_to_inode(sourcename);
1352         if (!ino)
1353                 return;
1354         base_name = strrchr(sourcename, '/');
1355         if (base_name)
1356                 base_name++;
1357         else
1358                 base_name = sourcename;
1359         /*
1360          * Figure out the destination.  First see if it exists and is
1361          * a directory.
1362          */
1363         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1364                 dest = base_name;
1365         else {
1366                 /*
1367                  * OK, it doesn't exist.  See if it is
1368                  * '<dir>/basename' or 'basename'
1369                  */
1370                 cp = strrchr(destname, '/');
1371                 if (cp) {
1372                         *cp = 0;
1373                         dir = string_to_inode(destname);
1374                         if (!dir)
1375                                 return;
1376                         dest = cp+1;
1377                 } else {
1378                         dir = cwd;
1379                         dest = destname;
1380                 }
1381         }
1382
1383         if (debugfs_read_inode(ino, &inode, sourcename))
1384                 return;
1385
1386         retval = ext2fs_link(current_fs, dir, dest, ino,
1387                              ext2_file_type(inode.i_mode));
1388         if (retval)
1389                 com_err("make_link", retval, 0);
1390         return;
1391 }
1392
1393
1394 void do_link(int argc, char *argv[])
1395 {
1396         if (common_args_process(argc, argv, 3, 3, "link",
1397                                 "<source file> <dest_name>", CHECK_FS_RW))
1398                 return;
1399
1400         make_link(argv[1], argv[2]);
1401 }
1402
1403 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1404                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1405                             blk64_t ref_block EXT2FS_ATTR((unused)),
1406                             int ref_offset EXT2FS_ATTR((unused)),
1407                             void *private EXT2FS_ATTR((unused)))
1408 {
1409         blk64_t block;
1410
1411         block = *blocknr;
1412         ext2fs_block_alloc_stats2(fs, block, +1);
1413         return 0;
1414 }
1415
1416 void do_undel(int argc, char *argv[])
1417 {
1418         ext2_ino_t      ino;
1419         struct ext2_inode inode;
1420
1421         if (common_args_process(argc, argv, 2, 3, "undelete",
1422                                 "<inode_num> [dest_name]",
1423                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1424                 return;
1425
1426         ino = string_to_inode(argv[1]);
1427         if (!ino)
1428                 return;
1429
1430         if (debugfs_read_inode(ino, &inode, argv[1]))
1431                 return;
1432
1433         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1434                 com_err(argv[1], 0, "Inode is not marked as deleted");
1435                 return;
1436         }
1437
1438         /*
1439          * XXX this function doesn't handle changing the links count on the
1440          * parent directory when undeleting a directory.
1441          */
1442         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1443         inode.i_dtime = 0;
1444
1445         if (debugfs_write_inode(ino, &inode, argv[0]))
1446                 return;
1447
1448         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1449                               mark_blocks_proc, NULL);
1450
1451         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1452
1453         if (argc > 2)
1454                 make_link(argv[1], argv[2]);
1455 }
1456
1457 static void unlink_file_by_name(char *filename)
1458 {
1459         int             retval;
1460         ext2_ino_t      dir;
1461         char            *base_name;
1462
1463         base_name = strrchr(filename, '/');
1464         if (base_name) {
1465                 *base_name++ = '\0';
1466                 dir = string_to_inode(filename);
1467                 if (!dir)
1468                         return;
1469         } else {
1470                 dir = cwd;
1471                 base_name = filename;
1472         }
1473         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1474         if (retval)
1475                 com_err("unlink_file_by_name", retval, 0);
1476         return;
1477 }
1478
1479 void do_unlink(int argc, char *argv[])
1480 {
1481         if (common_args_process(argc, argv, 2, 2, "link",
1482                                 "<pathname>", CHECK_FS_RW))
1483                 return;
1484
1485         unlink_file_by_name(argv[1]);
1486 }
1487 #endif /* READ_ONLY */
1488
1489 void do_find_free_block(int argc, char *argv[])
1490 {
1491         blk64_t free_blk, goal, first_free = 0;
1492         int             count;
1493         errcode_t       retval;
1494         char            *tmp;
1495
1496         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1497                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1498                 return;
1499         }
1500         if (check_fs_open(argv[0]))
1501                 return;
1502
1503         if (argc > 1) {
1504                 count = strtol(argv[1],&tmp,0);
1505                 if (*tmp) {
1506                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1507                         return;
1508                 }
1509         } else
1510                 count = 1;
1511
1512         if (argc > 2) {
1513                 goal = strtol(argv[2], &tmp, 0);
1514                 if (*tmp) {
1515                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1516                         return;
1517                 }
1518         }
1519         else
1520                 goal = current_fs->super->s_first_data_block;
1521
1522         printf("Free blocks found: ");
1523         free_blk = goal - 1;
1524         while (count-- > 0) {
1525                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1526                                            &free_blk);
1527                 if (first_free) {
1528                         if (first_free == free_blk)
1529                                 break;
1530                 } else
1531                         first_free = free_blk;
1532                 if (retval) {
1533                         com_err("ext2fs_new_block", retval, 0);
1534                         return;
1535                 } else
1536                         printf("%llu ", free_blk);
1537         }
1538         printf("\n");
1539 }
1540
1541 void do_find_free_inode(int argc, char *argv[])
1542 {
1543         ext2_ino_t      free_inode, dir;
1544         int             mode;
1545         int             retval;
1546         char            *tmp;
1547
1548         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1549                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1550                 return;
1551         }
1552         if (check_fs_open(argv[0]))
1553                 return;
1554
1555         if (argc > 1) {
1556                 dir = strtol(argv[1], &tmp, 0);
1557                 if (*tmp) {
1558                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1559                         return;
1560                 }
1561         }
1562         else
1563                 dir = root;
1564         if (argc > 2) {
1565                 mode = strtol(argv[2], &tmp, 0);
1566                 if (*tmp) {
1567                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1568                         return;
1569                 }
1570         } else
1571                 mode = 010755;
1572
1573         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1574         if (retval)
1575                 com_err("ext2fs_new_inode", retval, 0);
1576         else
1577                 printf("Free inode found: %u\n", free_inode);
1578 }
1579
1580 #ifndef READ_ONLY
1581 void do_write(int argc, char *argv[])
1582 {
1583         errcode_t       retval;
1584
1585         if (common_args_process(argc, argv, 3, 3, "write",
1586                                 "<native file> <new file>", CHECK_FS_RW))
1587                 return;
1588
1589         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1590         if (retval)
1591                 com_err(argv[0], retval, 0);
1592 }
1593
1594 void do_mknod(int argc, char *argv[])
1595 {
1596         unsigned long   major, minor;
1597         errcode_t       retval;
1598         int             nr;
1599         struct stat     st;
1600
1601         if (check_fs_open(argv[0]))
1602                 return;
1603         if (argc < 3 || argv[2][1]) {
1604         usage:
1605                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1606                 return;
1607         }
1608
1609         minor = major = 0;
1610         switch (argv[2][0]) {
1611                 case 'p':
1612                         st.st_mode = S_IFIFO;
1613                         nr = 3;
1614                         break;
1615                 case 'c':
1616                         st.st_mode = S_IFCHR;
1617                         nr = 5;
1618                         break;
1619                 case 'b':
1620                         st.st_mode = S_IFBLK;
1621                         nr = 5;
1622                         break;
1623                 default:
1624                         nr = 0;
1625         }
1626
1627         if (nr == 5) {
1628                 major = strtoul(argv[3], argv+3, 0);
1629                 minor = strtoul(argv[4], argv+4, 0);
1630                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1631                         nr = 0;
1632         }
1633
1634         if (argc != nr)
1635                 goto usage;
1636
1637         st.st_rdev = makedev(major, minor);
1638         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1639         if (retval)
1640                 com_err(argv[0], retval, 0);
1641 }
1642
1643 void do_mkdir(int argc, char *argv[])
1644 {
1645         errcode_t retval;
1646
1647         if (common_args_process(argc, argv, 2, 2, "mkdir",
1648                                 "<filename>", CHECK_FS_RW))
1649                 return;
1650
1651         retval = do_mkdir_internal(current_fs, cwd, argv[1], NULL, root);
1652         if (retval)
1653                 com_err(argv[0], retval, 0);
1654
1655 }
1656
1657 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1658                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1659                                blk64_t ref_block EXT2FS_ATTR((unused)),
1660                                int ref_offset EXT2FS_ATTR((unused)),
1661                                void *private EXT2FS_ATTR((unused)))
1662 {
1663         blk64_t block;
1664
1665         block = *blocknr;
1666         ext2fs_block_alloc_stats2(fs, block, -1);
1667         return 0;
1668 }
1669
1670 static void kill_file_by_inode(ext2_ino_t inode)
1671 {
1672         struct ext2_inode inode_buf;
1673
1674         if (debugfs_read_inode(inode, &inode_buf, 0))
1675                 return;
1676         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1677         if (debugfs_write_inode(inode, &inode_buf, 0))
1678                 return;
1679         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1680                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1681                                       NULL, release_blocks_proc, NULL);
1682         }
1683         printf("\n");
1684         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1685                                   LINUX_S_ISDIR(inode_buf.i_mode));
1686 }
1687
1688
1689 void do_kill_file(int argc, char *argv[])
1690 {
1691         ext2_ino_t inode_num;
1692
1693         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1694                 return;
1695
1696         kill_file_by_inode(inode_num);
1697 }
1698
1699 void do_rm(int argc, char *argv[])
1700 {
1701         int retval;
1702         ext2_ino_t inode_num;
1703         struct ext2_inode inode;
1704
1705         if (common_args_process(argc, argv, 2, 2, "rm",
1706                                 "<filename>", CHECK_FS_RW))
1707                 return;
1708
1709         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1710         if (retval) {
1711                 com_err(argv[0], retval, "while trying to resolve filename");
1712                 return;
1713         }
1714
1715         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1716                 return;
1717
1718         if (LINUX_S_ISDIR(inode.i_mode)) {
1719                 com_err(argv[0], 0, "file is a directory");
1720                 return;
1721         }
1722
1723         --inode.i_links_count;
1724         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1725                 return;
1726
1727         unlink_file_by_name(argv[1]);
1728         if (inode.i_links_count == 0)
1729                 kill_file_by_inode(inode_num);
1730 }
1731
1732 struct rd_struct {
1733         ext2_ino_t      parent;
1734         int             empty;
1735 };
1736
1737 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1738                       int       entry EXT2FS_ATTR((unused)),
1739                       struct ext2_dir_entry *dirent,
1740                       int       offset EXT2FS_ATTR((unused)),
1741                       int       blocksize EXT2FS_ATTR((unused)),
1742                       char      *buf EXT2FS_ATTR((unused)),
1743                       void      *private)
1744 {
1745         struct rd_struct *rds = (struct rd_struct *) private;
1746
1747         if (dirent->inode == 0)
1748                 return 0;
1749         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1750                 return 0;
1751         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1752             (dirent->name[1] == '.')) {
1753                 rds->parent = dirent->inode;
1754                 return 0;
1755         }
1756         rds->empty = 0;
1757         return 0;
1758 }
1759
1760 void do_rmdir(int argc, char *argv[])
1761 {
1762         int retval;
1763         ext2_ino_t inode_num;
1764         struct ext2_inode inode;
1765         struct rd_struct rds;
1766
1767         if (common_args_process(argc, argv, 2, 2, "rmdir",
1768                                 "<filename>", CHECK_FS_RW))
1769                 return;
1770
1771         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1772         if (retval) {
1773                 com_err(argv[0], retval, "while trying to resolve filename");
1774                 return;
1775         }
1776
1777         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1778                 return;
1779
1780         if (!LINUX_S_ISDIR(inode.i_mode)) {
1781                 com_err(argv[0], 0, "file is not a directory");
1782                 return;
1783         }
1784
1785         rds.parent = 0;
1786         rds.empty = 1;
1787
1788         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1789                                     0, rmdir_proc, &rds);
1790         if (retval) {
1791                 com_err(argv[0], retval, "while iterating over directory");
1792                 return;
1793         }
1794         if (rds.empty == 0) {
1795                 com_err(argv[0], 0, "directory not empty");
1796                 return;
1797         }
1798
1799         inode.i_links_count = 0;
1800         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1801                 return;
1802
1803         unlink_file_by_name(argv[1]);
1804         kill_file_by_inode(inode_num);
1805
1806         if (rds.parent) {
1807                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1808                         return;
1809                 if (inode.i_links_count > 1)
1810                         inode.i_links_count--;
1811                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1812                         return;
1813         }
1814 }
1815 #endif /* READ_ONLY */
1816
1817 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1818                             char *argv[] EXT2FS_ATTR((unused)))
1819 {
1820         if (current_fs)
1821                 printf("Open mode: read-%s\n",
1822                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1823         printf("Filesystem in use: %s\n",
1824                current_fs ? current_fs->device_name : "--none--");
1825 }
1826
1827 #ifndef READ_ONLY
1828 void do_expand_dir(int argc, char *argv[])
1829 {
1830         ext2_ino_t inode;
1831         int retval;
1832
1833         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1834                 return;
1835
1836         retval = ext2fs_expand_dir(current_fs, inode);
1837         if (retval)
1838                 com_err("ext2fs_expand_dir", retval, 0);
1839         return;
1840 }
1841
1842 void do_features(int argc, char *argv[])
1843 {
1844         int     i;
1845
1846         if (check_fs_open(argv[0]))
1847                 return;
1848
1849         if ((argc != 1) && check_fs_read_write(argv[0]))
1850                 return;
1851         for (i=1; i < argc; i++) {
1852                 if (e2p_edit_feature(argv[i],
1853                                      &current_fs->super->s_feature_compat, 0))
1854                         com_err(argv[0], 0, "Unknown feature: %s\n",
1855                                 argv[i]);
1856                 else
1857                         ext2fs_mark_super_dirty(current_fs);
1858         }
1859         print_features(current_fs->super, stdout);
1860 }
1861 #endif /* READ_ONLY */
1862
1863 void do_bmap(int argc, char *argv[])
1864 {
1865         ext2_ino_t      ino;
1866         blk64_t         blk, pblk;
1867         int             err;
1868         errcode_t       errcode;
1869
1870         if (common_args_process(argc, argv, 3, 3, argv[0],
1871                                 "<file> logical_blk", 0))
1872                 return;
1873
1874         ino = string_to_inode(argv[1]);
1875         if (!ino)
1876                 return;
1877         err = strtoblk(argv[0], argv[2], "logical block", &blk);
1878         if (err)
1879                 return;
1880
1881         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
1882         if (errcode) {
1883                 com_err(argv[0], errcode,
1884                         "while mapping logical block %llu\n", blk);
1885                 return;
1886         }
1887         printf("%llu\n", pblk);
1888 }
1889
1890 void do_imap(int argc, char *argv[])
1891 {
1892         ext2_ino_t      ino;
1893         unsigned long   group, block, block_nr, offset;
1894
1895         if (common_args_process(argc, argv, 2, 2, argv[0],
1896                                 "<file>", 0))
1897                 return;
1898         ino = string_to_inode(argv[1]);
1899         if (!ino)
1900                 return;
1901
1902         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1903         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1904                 EXT2_INODE_SIZE(current_fs->super);
1905         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1906         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
1907                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1908                         group);
1909                 return;
1910         }
1911         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
1912                 block;
1913         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1914
1915         printf("Inode %d is part of block group %lu\n"
1916                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1917                block_nr, offset);
1918
1919 }
1920
1921 void do_idump(int argc, char *argv[])
1922 {
1923         ext2_ino_t      ino;
1924         unsigned char   *buf;
1925         errcode_t       err;
1926         int             isize;
1927
1928         if (common_args_process(argc, argv, 2, 2, argv[0],
1929                                 "<file>", 0))
1930                 return;
1931         ino = string_to_inode(argv[1]);
1932         if (!ino)
1933                 return;
1934
1935         isize = EXT2_INODE_SIZE(current_fs->super);
1936         err = ext2fs_get_mem(isize, &buf);
1937         if (err) {
1938                 com_err(argv[0], err, "while allocating memory");
1939                 return;
1940         }
1941
1942         err = ext2fs_read_inode_full(current_fs, ino,
1943                                      (struct ext2_inode *)buf, isize);
1944         if (err) {
1945                 com_err(argv[0], err, "while reading inode %d", ino);
1946                 goto err;
1947         }
1948
1949         do_byte_hexdump(stdout, buf, isize);
1950 err:
1951         ext2fs_free_mem(&buf);
1952 }
1953
1954 #ifndef READ_ONLY
1955 void do_set_current_time(int argc, char *argv[])
1956 {
1957         time_t now;
1958
1959         if (common_args_process(argc, argv, 2, 2, argv[0],
1960                                 "<time>", 0))
1961                 return;
1962
1963         now = string_to_time(argv[1]);
1964         if (now == ((time_t) -1)) {
1965                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1966                         argv[1]);
1967                 return;
1968
1969         } else {
1970                 printf("Setting current time to %s\n", time_to_string(now));
1971                 current_fs->now = now;
1972         }
1973 }
1974 #endif /* READ_ONLY */
1975
1976 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
1977 {
1978         int compat, bit, ret;
1979         unsigned int feature_mask;
1980
1981         if (name) {
1982                 if (feature_type == E2P_FS_FEATURE)
1983                         ret = e2p_string2feature(name, &compat, &feature_mask);
1984                 else
1985                         ret = e2p_jrnl_string2feature(name, &compat,
1986                                                       &feature_mask);
1987                 if (ret)
1988                         return ret;
1989
1990                 if (!(supp[compat] & feature_mask))
1991                         return 1;
1992         } else {
1993                 for (compat = 0; compat < 3; compat++) {
1994                         for (bit = 0, feature_mask = 1; bit < 32;
1995                              bit++, feature_mask <<= 1) {
1996                                 if (supp[compat] & feature_mask) {
1997                                         if (feature_type == E2P_FS_FEATURE)
1998                                                 fprintf(stdout, " %s",
1999                                                 e2p_feature2string(compat,
2000                                                 feature_mask));
2001                                         else
2002                                                 fprintf(stdout, " %s",
2003                                                 e2p_jrnl_feature2string(compat,
2004                                                 feature_mask));
2005                                 }
2006                         }
2007                 }
2008                 fprintf(stdout, "\n");
2009         }
2010
2011         return 0;
2012 }
2013
2014 void do_supported_features(int argc, char *argv[])
2015 {
2016         int     ret;
2017         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2018                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2019                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2020         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2021                                  JFS_KNOWN_INCOMPAT_FEATURES,
2022                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2023
2024         if (argc > 1) {
2025                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2026                 if (ret) {
2027                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2028                                                 argv[1]);
2029                 }
2030                 if (ret)
2031                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2032                 else
2033                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2034         } else {
2035                 fprintf(stdout, "Supported features:");
2036                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2037                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2038         }
2039 }
2040
2041 #ifndef READ_ONLY
2042 void do_punch(int argc, char *argv[])
2043 {
2044         ext2_ino_t      ino;
2045         blk64_t         start, end;
2046         int             err;
2047         errcode_t       errcode;
2048
2049         if (common_args_process(argc, argv, 3, 4, argv[0],
2050                                 "<file> start_blk [end_blk]",
2051                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2052                 return;
2053
2054         ino = string_to_inode(argv[1]);
2055         if (!ino)
2056                 return;
2057         err = strtoblk(argv[0], argv[2], "logical block", &start);
2058         if (err)
2059                 return;
2060         if (argc == 4) {
2061                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2062                 if (err)
2063                         return;
2064         } else
2065                 end = ~0;
2066
2067         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2068
2069         if (errcode) {
2070                 com_err(argv[0], errcode,
2071                         "while truncating inode %u from %llu to %llu\n", ino,
2072                         (unsigned long long) start, (unsigned long long) end);
2073                 return;
2074         }
2075 }
2076 #endif /* READ_ONLY */
2077
2078 void do_symlink(int argc, char *argv[])
2079 {
2080         errcode_t       retval;
2081
2082         if (common_args_process(argc, argv, 3, 3, "symlink",
2083                                 "<filename> <target>", CHECK_FS_RW))
2084                 return;
2085
2086         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2087         if (retval)
2088                 com_err(argv[0], retval, 0);
2089
2090 }
2091
2092 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2093 {
2094 #if CONFIG_MMP
2095         struct mmp_struct *mmp_s;
2096         time_t t;
2097         errcode_t retval = 0;
2098
2099         if (check_fs_open(argv[0]))
2100                 return;
2101
2102         if (current_fs->mmp_buf == NULL) {
2103                 retval = ext2fs_get_mem(current_fs->blocksize,
2104                                         &current_fs->mmp_buf);
2105                 if (retval) {
2106                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2107                         return;
2108                 }
2109         }
2110
2111         mmp_s = current_fs->mmp_buf;
2112
2113         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2114                                  current_fs->mmp_buf);
2115         if (retval) {
2116                 com_err(argv[0], retval, "reading MMP block.\n");
2117                 return;
2118         }
2119
2120         t = mmp_s->mmp_time;
2121         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2122         fprintf(stdout, "update_interval: %d\n",
2123                 current_fs->super->s_mmp_update_interval);
2124         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2125         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2126         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2127         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2128         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2129         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2130         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2131 #else
2132         fprintf(stdout, "MMP is unsupported, please recompile with "
2133                         "--enable-mmp\n");
2134 #endif
2135 }
2136
2137 static int source_file(const char *cmd_file, int ss_idx)
2138 {
2139         FILE            *f;
2140         char            buf[BUFSIZ];
2141         char            *cp;
2142         int             exit_status = 0;
2143         int             retval;
2144
2145         if (strcmp(cmd_file, "-") == 0)
2146                 f = stdin;
2147         else {
2148                 f = fopen(cmd_file, "r");
2149                 if (!f) {
2150                         perror(cmd_file);
2151                         exit(1);
2152                 }
2153         }
2154         fflush(stdout);
2155         fflush(stderr);
2156         setbuf(stdout, NULL);
2157         setbuf(stderr, NULL);
2158         while (!feof(f)) {
2159                 if (fgets(buf, sizeof(buf), f) == NULL)
2160                         break;
2161                 cp = strchr(buf, '\n');
2162                 if (cp)
2163                         *cp = 0;
2164                 cp = strchr(buf, '\r');
2165                 if (cp)
2166                         *cp = 0;
2167                 printf("debugfs: %s\n", buf);
2168                 retval = ss_execute_line(ss_idx, buf);
2169                 if (retval) {
2170                         ss_perror(ss_idx, retval, buf);
2171                         exit_status++;
2172                 }
2173         }
2174         if (f != stdin)
2175                 fclose(f);
2176         return exit_status;
2177 }
2178
2179 int main(int argc, char **argv)
2180 {
2181         int             retval;
2182         const char      *usage =
2183                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2184                 "[-R request] [-V] ["
2185 #ifndef READ_ONLY
2186                 "[-w] "
2187 #endif
2188                 "[-c] device]";
2189         int             c;
2190         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2191         char            *request = 0;
2192         int             exit_status = 0;
2193         char            *cmd_file = 0;
2194         blk64_t         superblock = 0;
2195         blk64_t         blocksize = 0;
2196         int             catastrophic = 0;
2197         char            *data_filename = 0;
2198 #ifdef READ_ONLY
2199         const char      *opt_string = "nicR:f:b:s:Vd:D";
2200 #else
2201         const char      *opt_string = "niwcR:f:b:s:Vd:D";
2202 #endif
2203
2204         if (debug_prog_name == 0)
2205 #ifdef READ_ONLY
2206                 debug_prog_name = "rdebugfs";
2207 #else
2208                 debug_prog_name = "debugfs";
2209 #endif
2210         add_error_table(&et_ext2_error_table);
2211         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2212                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2213
2214         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2215                 switch (c) {
2216                 case 'R':
2217                         request = optarg;
2218                         break;
2219                 case 'f':
2220                         cmd_file = optarg;
2221                         break;
2222                 case 'd':
2223                         data_filename = optarg;
2224                         break;
2225                 case 'i':
2226                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2227                         break;
2228                 case 'n':
2229                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2230                         break;
2231 #ifndef READ_ONLY
2232                 case 'w':
2233                         open_flags |= EXT2_FLAG_RW;
2234                         break;
2235 #endif
2236                 case 'D':
2237                         open_flags |= EXT2_FLAG_DIRECT_IO;
2238                         break;
2239                 case 'b':
2240                         blocksize = parse_ulong(optarg, argv[0],
2241                                                 "block size", 0);
2242                         break;
2243                 case 's':
2244                         retval = strtoblk(argv[0], optarg,
2245                                           "superblock block number",
2246                                           &superblock);
2247                         if (retval)
2248                                 return 1;
2249                         break;
2250                 case 'c':
2251                         catastrophic = 1;
2252                         break;
2253                 case 'V':
2254                         /* Print version number and exit */
2255                         fprintf(stderr, "\tUsing %s\n",
2256                                 error_message(EXT2_ET_BASE));
2257                         exit(0);
2258                 default:
2259                         com_err(argv[0], 0, usage, debug_prog_name);
2260                         return 1;
2261                 }
2262         }
2263         if (optind < argc)
2264                 open_filesystem(argv[optind], open_flags,
2265                                 superblock, blocksize, catastrophic,
2266                                 data_filename);
2267
2268         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2269                                        &debug_cmds, &retval);
2270         if (retval) {
2271                 ss_perror(sci_idx, retval, "creating invocation");
2272                 exit(1);
2273         }
2274         ss_get_readline(sci_idx);
2275
2276         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2277         if (retval) {
2278                 ss_perror(sci_idx, retval, "adding standard requests");
2279                 exit (1);
2280         }
2281         if (extra_cmds)
2282                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2283         if (retval) {
2284                 ss_perror(sci_idx, retval, "adding extra requests");
2285                 exit (1);
2286         }
2287         if (request) {
2288                 retval = 0;
2289                 retval = ss_execute_line(sci_idx, request);
2290                 if (retval) {
2291                         ss_perror(sci_idx, retval, request);
2292                         exit_status++;
2293                 }
2294         } else if (cmd_file) {
2295                 exit_status = source_file(cmd_file, sci_idx);
2296         } else {
2297                 ss_listen(sci_idx);
2298         }
2299
2300         ss_delete_invocation(sci_idx);
2301
2302         if (current_fs)
2303                 close_filesystem();
2304
2305         remove_error_table(&et_ext2_error_table);
2306         return exit_status;
2307 }