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