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 ext2_ino_t     root, cwd;
  48
  49 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
  50                             blk64_t blocksize, int catastrophic,
  51                             char *data_filename)
  52 {
  53         int     retval;
  54         io_channel data_io = 0;
  55
  56         if (superblock != 0 && blocksize == 0) {
  57                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  58                 current_fs = NULL;
  59                 return;
  60         }
  61
  62         if (data_filename) {
  63                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  64                         com_err(device, 0,
  65                                 "The -d option is only valid when reading an e2image file");
  66                         current_fs = NULL;
  67                         return;
  68                 }
  69                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  70                 if (retval) {
  71                         com_err(data_filename, 0, "while opening data source");
  72                         current_fs = NULL;
  73                         return;
  74                 }
  75         }
  76
  77         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  78                 com_err(device, 0,
  79                         "opening read-only because of catastrophic mode");
  80                 open_flags &= ~EXT2_FLAG_RW;
  81         }
  82         if (catastrophic)
  83                 open_flags |= EXT2_FLAG_SKIP_MMP;
  84
  85         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  86                              unix_io_manager, &current_fs);
  87         if (retval) {
  88                 com_err(device, retval, "while opening filesystem");
  89                 current_fs = NULL;
  90                 return;
  91         }
  92         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
  93
  94         if (catastrophic)
  95                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  96         else {
  97                 retval = ext2fs_read_inode_bitmap(current_fs);
  98                 if (retval) {
  99                         com_err(device, retval, "while reading inode bitmap");
 100                         goto errout;
 101                 }
 102                 retval = ext2fs_read_block_bitmap(current_fs);
 103                 if (retval) {
 104                         com_err(device, retval, "while reading block bitmap");
 105                         goto errout;
 106                 }
 107         }
 108
 109         if (data_io) {
 110                 retval = ext2fs_set_data_io(current_fs, data_io);
 111                 if (retval) {
 112                         com_err(device, retval,
 113                                 "while setting data source");
 114                         goto errout;
 115                 }
 116         }
 117
 118         root = cwd = EXT2_ROOT_INO;
 119         return;
 120
 121 errout:
 122         retval = ext2fs_close(current_fs);
 123         if (retval)
 124                 com_err(device, retval, "while trying to close filesystem");
 125         current_fs = NULL;
 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         retval = ext2fs_close(current_fs);
 230         if (retval)
 231                 com_err("ext2fs_close", retval, 0);
 232         current_fs = NULL;
 233         return;
 234 }
 235
 236 void do_close_filesys(int argc, char **argv)
 237 {
 238         int     c;
 239
 240         if (check_fs_open(argv[0]))
 241                 return;
 242
 243         reset_getopt();
 244         while ((c = getopt (argc, argv, "a")) != EOF) {
 245                 switch (c) {
 246                 case 'a':
 247                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 248                         break;
 249                 default:
 250                         goto print_usage;
 251                 }
 252         }
 253
 254         if (argc > optind) {
 255         print_usage:
 256                 com_err(0, 0, "Usage: close_filesys [-a]");
 257                 return;
 258         }
 259
 260         close_filesystem();
 261 }
 262
 263 #ifndef READ_ONLY
 264 void do_init_filesys(int argc, char **argv)
 265 {
 266         struct ext2_super_block param;
 267         errcode_t       retval;
 268         int             err;
 269         blk64_t         blocks;
 270
 271         if (common_args_process(argc, argv, 3, 3, "initialize",
 272                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 273                 return;
 274
 275         memset(&param, 0, sizeof(struct ext2_super_block));
 276         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 277         if (err)
 278                 return;
 279         ext2fs_blocks_count_set(&param, blocks);
 280         retval = ext2fs_initialize(argv[1], 0, &param,
 281                                    unix_io_manager, &current_fs);
 282         if (retval) {
 283                 com_err(argv[1], retval, "while initializing filesystem");
 284                 current_fs = NULL;
 285                 return;
 286         }
 287         root = cwd = EXT2_ROOT_INO;
 288         return;
 289 }
 290
 291 static void print_features(struct ext2_super_block * s, FILE *f)
 292 {
 293         int     i, j, printed=0;
 294         __u32   *mask = &s->s_feature_compat, m;
 295
 296         fputs("Filesystem features:", f);
 297         for (i=0; i <3; i++,mask++) {
 298                 for (j=0,m=1; j < 32; j++, m<<=1) {
 299                         if (*mask & m) {
 300                                 fprintf(f, " %s", e2p_feature2string(i, m));
 301                                 printed++;
 302                         }
 303                 }
 304         }
 305         if (printed == 0)
 306                 fputs("(none)", f);
 307         fputs("\n", f);
 308 }
 309 #endif /* READ_ONLY */
 310
 311 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 312                           const char *str, int *first, FILE *f)
 313 {
 314         if (ext2fs_bg_flags_test(fs, group, mask)) {
 315                 if (*first) {
 316                         fputs("           [", f);
 317                         *first = 0;
 318                 } else
 319                         fputs(", ", f);
 320                 fputs(str, f);
 321         }
 322 }
 323
 324 void do_show_super_stats(int argc, char *argv[])
 325 {
 326         const char *units ="block";
 327         dgrp_t  i;
 328         FILE    *out;
 329         int     c, header_only = 0;
 330         int     numdirs = 0, first, gdt_csum;
 331
 332         reset_getopt();
 333         while ((c = getopt (argc, argv, "h")) != EOF) {
 334                 switch (c) {
 335                 case 'h':
 336                         header_only++;
 337                         break;
 338                 default:
 339                         goto print_usage;
 340                 }
 341         }
 342         if (optind != argc) {
 343                 goto print_usage;
 344         }
 345         if (check_fs_open(argv[0]))
 346                 return;
 347         out = open_pager();
 348
 349         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 350                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 351                 units = "cluster";
 352
 353         list_super2(current_fs->super, out);
 354         for (i=0; i < current_fs->group_desc_count; i++)
 355                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 356         fprintf(out, "Directories:              %d\n", numdirs);
 357
 358         if (header_only) {
 359                 close_pager(out);
 360                 return;
 361         }
 362
 363         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 364         for (i = 0; i < current_fs->group_desc_count; i++) {
 365                 fprintf(out, " Group %2d: block bitmap at %llu, "
 366                         "inode bitmap at %llu, "
 367                         "inode table at %llu\n"
 368                         "           %u free %s%s, "
 369                         "%u free %s, "
 370                         "%u used %s%s",
 371                         i, ext2fs_block_bitmap_loc(current_fs, i),
 372                         ext2fs_inode_bitmap_loc(current_fs, i),
 373                         ext2fs_inode_table_loc(current_fs, i),
 374                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 375                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 376                         "s" : "",
 377                         ext2fs_bg_free_inodes_count(current_fs, i),
 378                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 379                         "inodes" : "inode",
 380                         ext2fs_bg_used_dirs_count(current_fs, i),
 381                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 382                                 : "directory", gdt_csum ? ", " : "\n");
 383                 if (gdt_csum)
 384                         fprintf(out, "%u unused %s\n",
 385                                 ext2fs_bg_itable_unused(current_fs, i),
 386                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 387                                 "inodes" : "inode");
 388                 first = 1;
 389                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 390                               &first, out);
 391                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 392                               &first, out);
 393                 if (gdt_csum) {
 394                         fprintf(out, "%sChecksum 0x%04x",
 395                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 396                         first = 0;
 397                 }
 398                 if (!first)
 399                         fputs("]\n", out);
 400         }
 401         close_pager(out);
 402         return;
 403 print_usage:
 404         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 405 }
 406
 407 #ifndef READ_ONLY
 408 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 409                       char **argv EXT2FS_ATTR((unused)))
 410 {
 411         if (check_fs_open(argv[0]))
 412                 return;
 413         if (check_fs_read_write(argv[0]))
 414                 return;
 415
 416         if (argv[1] && !strcmp(argv[1], "-clean"))
 417                 current_fs->super->s_state |= EXT2_VALID_FS;
 418         else
 419                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 420         ext2fs_mark_super_dirty(current_fs);
 421 }
 422 #endif /* READ_ONLY */
 423
 424 struct list_blocks_struct {
 425         FILE            *f;
 426         e2_blkcnt_t     total;
 427         blk64_t         first_block, last_block;
 428         e2_blkcnt_t     first_bcnt, last_bcnt;
 429         e2_blkcnt_t     first;
 430 };
 431
 432 static void finish_range(struct list_blocks_struct *lb)
 433 {
 434         if (lb->first_block == 0)
 435                 return;
 436         if (lb->first)
 437                 lb->first = 0;
 438         else
 439                 fprintf(lb->f, ", ");
 440         if (lb->first_block == lb->last_block)
 441                 fprintf(lb->f, "(%lld):%llu",
 442                         (long long)lb->first_bcnt, lb->first_block);
 443         else
 444                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 445                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 446                         lb->first_block, lb->last_block);
 447         lb->first_block = 0;
 448 }
 449
 450 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 451                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 452                             blk64_t ref_block EXT2FS_ATTR((unused)),
 453                             int ref_offset EXT2FS_ATTR((unused)),
 454                             void *private)
 455 {
 456         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 457
 458         lb->total++;
 459         if (blockcnt >= 0) {
 460                 /*
 461                  * See if we can add on to the existing range (if it exists)
 462                  */
 463                 if (lb->first_block &&
 464                     (lb->last_block+1 == *blocknr) &&
 465                     (lb->last_bcnt+1 == blockcnt)) {
 466                         lb->last_block = *blocknr;
 467                         lb->last_bcnt = blockcnt;
 468                         return 0;
 469                 }
 470                 /*
 471                  * Start a new range.
 472                  */
 473                 finish_range(lb);
 474                 lb->first_block = lb->last_block = *blocknr;
 475                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 476                 return 0;
 477         }
 478         /*
 479          * Not a normal block.  Always force a new range.
 480          */
 481         finish_range(lb);
 482         if (lb->first)
 483                 lb->first = 0;
 484         else
 485                 fprintf(lb->f, ", ");
 486         if (blockcnt == -1)
 487                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 488         else if (blockcnt == -2)
 489                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 490         else if (blockcnt == -3)
 491                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 492         return 0;
 493 }
 494
 495 static void internal_dump_inode_extra(FILE *out,
 496                                       const char *prefix EXT2FS_ATTR((unused)),
 497                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 498                                       struct ext2_inode_large *inode)
 499 {
 500         struct ext2_ext_attr_entry *entry;
 501         __u32 *magic;
 502         char *start, *end;
 503         unsigned int storage_size;
 504
 505         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 506         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 507                         EXT2_GOOD_OLD_INODE_SIZE) {
 508                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 509                                 inode->i_extra_isize);
 510                 return;
 511         }
 512 }
 513
 514 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 515 {
 516         struct list_blocks_struct lb;
 517
 518         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 519         lb.total = 0;
 520         lb.first_block = 0;
 521         lb.f = f;
 522         lb.first = 1;
 523         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 524                               list_blocks_proc, (void *)&lb);
 525         finish_range(&lb);
 526         if (lb.total)
 527                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 528         fprintf(f,"\n");
 529 }
 530
 531 static int int_log10(unsigned long long arg)
 532 {
 533         int     l = 0;
 534
 535         arg = arg / 10;
 536         while (arg) {
 537                 l++;
 538                 arg = arg / 10;
 539         }
 540         return l;
 541 }
 542
 543 #define DUMP_LEAF_EXTENTS       0x01
 544 #define DUMP_NODE_EXTENTS       0x02
 545 #define DUMP_EXTENT_TABLE       0x04
 546
 547 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 548                          int flags, int logical_width, int physical_width)
 549 {
 550         ext2_extent_handle_t    handle;
 551         struct ext2fs_extent    extent;
 552         struct ext2_extent_info info;
 553         int                     op = EXT2_EXTENT_ROOT;
 554         unsigned int            printed = 0;
 555         errcode_t               errcode;
 556
 557         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 558         if (errcode)
 559                 return;
 560
 561         if (flags & DUMP_EXTENT_TABLE)
 562                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 563                         (logical_width*2)+3, "Logical",
 564                         (physical_width*2)+3, "Physical");
 565         else
 566                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 567
 568         while (1) {
 569                 errcode = ext2fs_extent_get(handle, op, &extent);
 570
 571                 if (errcode)
 572                         break;
 573
 574                 op = EXT2_EXTENT_NEXT;
 575
 576                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 577                         continue;
 578
 579                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 580                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 581                                 continue;
 582                 } else {
 583                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 584                                 continue;
 585                 }
 586
 587                 errcode = ext2fs_extent_get_info(handle, &info);
 588                 if (errcode)
 589                         continue;
 590
 591                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 592                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 593                                 continue;
 594
 595                         if (flags & DUMP_EXTENT_TABLE) {
 596                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 597                                         "%*llu%*s %6u\n",
 598                                         info.curr_level, info.max_depth,
 599                                         info.curr_entry, info.num_entries,
 600                                         logical_width,
 601                                         extent.e_lblk,
 602                                         logical_width,
 603                                         extent.e_lblk + (extent.e_len - 1),
 604                                         physical_width,
 605                                         extent.e_pblk,
 606                                         physical_width+3, "", extent.e_len);
 607                                 continue;
 608                         }
 609
 610                         fprintf(f, "%s(ETB%d):%lld",
 611                                 printed ? ", " : "", info.curr_level,
 612                                 extent.e_pblk);
 613                         printed = 1;
 614                         continue;
 615                 }
 616
 617                 if (flags & DUMP_EXTENT_TABLE) {
 618                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 619                                 "%*llu - %*llu %6u %s\n",
 620                                 info.curr_level, info.max_depth,
 621                                 info.curr_entry, info.num_entries,
 622                                 logical_width,
 623                                 extent.e_lblk,
 624                                 logical_width,
 625                                 extent.e_lblk + (extent.e_len - 1),
 626                                 physical_width,
 627                                 extent.e_pblk,
 628                                 physical_width,
 629                                 extent.e_pblk + (extent.e_len - 1),
 630                                 extent.e_len,
 631                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 632                                         "Uninit" : "");
 633                         continue;
 634                 }
 635
 636                 if (extent.e_len == 0)
 637                         continue;
 638                 else if (extent.e_len == 1)
 639                         fprintf(f,
 640                                 "%s(%lld%s):%lld",
 641                                 printed ? ", " : "",
 642                                 extent.e_lblk,
 643                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 644                                 "[u]" : "",
 645                                 extent.e_pblk);
 646                 else
 647                         fprintf(f,
 648                                 "%s(%lld-%lld%s):%lld-%lld",
 649                                 printed ? ", " : "",
 650                                 extent.e_lblk,
 651                                 extent.e_lblk + (extent.e_len - 1),
 652                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 653                                         "[u]" : "",
 654                                 extent.e_pblk,
 655                                 extent.e_pblk + (extent.e_len - 1));
 656                 printed = 1;
 657         }
 658         if (printed)
 659                 fprintf(f, "\n");
 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: %d", prefix, size);
 670 }
 671
 672 void internal_dump_inode(FILE *out, const char *prefix,
 673                          ext2_ino_t inode_num, struct ext2_inode *inode,
 674                          int do_dump_blocks)
 675 {
 676         const char *i_type;
 677         char frag, fsize;
 678         int os = current_fs->super->s_creator_os;
 679         struct ext2_inode_large *large_inode;
 680         int is_large_inode = 0;
 681
 682         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 683                 is_large_inode = 1;
 684         large_inode = (struct ext2_inode_large *) inode;
 685
 686         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 687         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 688         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 689         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 690         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 691         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 692         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 693         else i_type = "bad type";
 694         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 695         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 696                 prefix, inode->i_mode & 0777, inode->i_flags);
 697         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 698                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 699                         prefix, inode->i_generation, large_inode->i_version_hi,
 700                         inode->osd1.linux1.l_i_version);
 701         } else {
 702                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 703                         inode->i_generation, inode->osd1.linux1.l_i_version);
 704         }
 705         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 706                 prefix, inode_uid(*inode), inode_gid(*inode));
 707         if (LINUX_S_ISREG(inode->i_mode))
 708                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 709         else
 710                 fprintf(out, "%d\n", inode->i_size);
 711         if (os == EXT2_OS_HURD)
 712                 fprintf(out,
 713                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 714                         prefix,
 715                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 716                         inode->osd1.hurd1.h_i_translator);
 717         else
 718                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 719                         prefix,
 720                         inode->i_file_acl | ((long long)
 721                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 722                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 723         if (os == EXT2_OS_LINUX)
 724                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 725                         prefix, inode->i_links_count,
 726                         (((unsigned long long)
 727                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 728                         inode->i_blocks);
 729         else
 730                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 731                         prefix, inode->i_links_count, inode->i_blocks);
 732         switch (os) {
 733             case EXT2_OS_HURD:
 734                 frag = inode->osd2.hurd2.h_i_frag;
 735                 fsize = inode->osd2.hurd2.h_i_fsize;
 736                 break;
 737             default:
 738                 frag = fsize = 0;
 739         }
 740         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 741                 prefix, inode->i_faddr, frag, fsize);
 742         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 743                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 744                         inode->i_ctime, large_inode->i_ctime_extra,
 745                         time_to_string(inode->i_ctime));
 746                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 747                         inode->i_atime, large_inode->i_atime_extra,
 748                         time_to_string(inode->i_atime));
 749                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 750                         inode->i_mtime, large_inode->i_mtime_extra,
 751                         time_to_string(inode->i_mtime));
 752                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 753                         large_inode->i_crtime, large_inode->i_crtime_extra,
 754                         time_to_string(large_inode->i_crtime));
 755         } else {
 756                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 757                         time_to_string(inode->i_ctime));
 758                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 759                         time_to_string(inode->i_atime));
 760                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 761                         time_to_string(inode->i_mtime));
 762         }
 763         if (inode->i_dtime)
 764           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 765                   time_to_string(inode->i_dtime));
 766         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 767                 internal_dump_inode_extra(out, prefix, inode_num,
 768                                           (struct ext2_inode_large *) inode);
 769         dump_inode_attributes(out, inode_num);
 770         if (current_fs->super->s_creator_os == EXT2_OS_LINUX &&
 771             current_fs->super->s_feature_ro_compat &
 772                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
 773                 __u32 crc = inode->i_checksum_lo;
 774                 if (is_large_inode &&
 775                     large_inode->i_extra_isize >=
 776                                 (offsetof(struct ext2_inode_large,
 777                                           i_checksum_hi) -
 778                                  EXT2_GOOD_OLD_INODE_SIZE))
 779                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 780                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 781         }
 782
 783         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 784                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 785                         (int) inode->i_size, (char *)inode->i_block);
 786         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 787                 int major, minor;
 788                 const char *devnote;
 789
 790                 if (inode->i_block[0]) {
 791                         major = (inode->i_block[0] >> 8) & 255;
 792                         minor = inode->i_block[0] & 255;
 793                         devnote = "";
 794                 } else {
 795                         major = (inode->i_block[1] & 0xfff00) >> 8;
 796                         minor = ((inode->i_block[1] & 0xff) |
 797                                  ((inode->i_block[1] >> 12) & 0xfff00));
 798                         devnote = "(New-style) ";
 799                 }
 800                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 801                         devnote, major, minor, major, minor);
 802         } else if (do_dump_blocks) {
 803                 if (inode->i_flags & EXT4_EXTENTS_FL)
 804                         dump_extents(out, prefix, inode_num,
 805                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 806                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 807                         dump_inline_data(out, prefix, inode_num);
 808                 else
 809                         dump_blocks(out, prefix, inode_num);
 810         }
 811 }
 812
 813 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 814 {
 815         FILE    *out;
 816
 817         out = open_pager();
 818         internal_dump_inode(out, "", inode_num, inode, 1);
 819         close_pager(out);
 820 }
 821
 822 void do_stat(int argc, char *argv[])
 823 {
 824         ext2_ino_t      inode;
 825         struct ext2_inode * inode_buf;
 826
 827         if (check_fs_open(argv[0]))
 828                 return;
 829
 830         inode_buf = (struct ext2_inode *)
 831                         malloc(EXT2_INODE_SIZE(current_fs->super));
 832         if (!inode_buf) {
 833                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 834                 return;
 835         }
 836
 837         if (common_inode_args_process(argc, argv, &inode, 0)) {
 838                 free(inode_buf);
 839                 return;
 840         }
 841
 842         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 843                                         EXT2_INODE_SIZE(current_fs->super))) {
 844                 free(inode_buf);
 845                 return;
 846         }
 847
 848         dump_inode(inode, inode_buf);
 849         free(inode_buf);
 850         return;
 851 }
 852
 853 void do_dump_extents(int argc, char **argv)
 854 {
 855         struct ext2_inode inode;
 856         ext2_ino_t      ino;
 857         FILE            *out;
 858         int             c, flags = 0;
 859         int             logical_width;
 860         int             physical_width;
 861
 862         reset_getopt();
 863         while ((c = getopt(argc, argv, "nl")) != EOF) {
 864                 switch (c) {
 865                 case 'n':
 866                         flags |= DUMP_NODE_EXTENTS;
 867                         break;
 868                 case 'l':
 869                         flags |= DUMP_LEAF_EXTENTS;
 870                         break;
 871                 }
 872         }
 873
 874         if (argc != optind + 1) {
 875                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 876                 return;
 877         }
 878
 879         if (flags == 0)
 880                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 881         flags |= DUMP_EXTENT_TABLE;
 882
 883         if (check_fs_open(argv[0]))
 884                 return;
 885
 886         ino = string_to_inode(argv[optind]);
 887         if (ino == 0)
 888                 return;
 889
 890         if (debugfs_read_inode(ino, &inode, argv[0]))
 891                 return;
 892
 893         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 894                 fprintf(stderr, "%s: does not uses extent block maps\n",
 895                         argv[optind]);
 896                 return;
 897         }
 898
 899         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 900                                   current_fs->blocksize) + 1;
 901         if (logical_width < 5)
 902                 logical_width = 5;
 903         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 904         if (physical_width < 5)
 905                 physical_width = 5;
 906
 907         out = open_pager();
 908         dump_extents(out, "", ino, flags, logical_width, physical_width);
 909         close_pager(out);
 910         return;
 911 }
 912
 913 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 914                              blk64_t *blocknr,
 915                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 916                              blk64_t ref_block EXT2FS_ATTR((unused)),
 917                              int ref_offset EXT2FS_ATTR((unused)),
 918                              void *private EXT2FS_ATTR((unused)))
 919 {
 920         printf("%llu ", *blocknr);
 921         return 0;
 922 }
 923
 924 void do_blocks(int argc, char *argv[])
 925 {
 926         ext2_ino_t      inode;
 927
 928         if (check_fs_open(argv[0]))
 929                 return;
 930
 931         if (common_inode_args_process(argc, argv, &inode, 0)) {
 932                 return;
 933         }
 934
 935         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 936                               print_blocks_proc, NULL);
 937         fputc('\n', stdout);
 938         return;
 939 }
 940
 941 void do_chroot(int argc, char *argv[])
 942 {
 943         ext2_ino_t inode;
 944         int retval;
 945
 946         if (common_inode_args_process(argc, argv, &inode, 0))
 947                 return;
 948
 949         retval = ext2fs_check_directory(current_fs, inode);
 950         if (retval)  {
 951                 com_err(argv[1], retval, 0);
 952                 return;
 953         }
 954         root = inode;
 955 }
 956
 957 #ifndef READ_ONLY
 958 void do_clri(int argc, char *argv[])
 959 {
 960         ext2_ino_t inode;
 961         struct ext2_inode inode_buf;
 962
 963         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 964                 return;
 965
 966         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 967                 return;
 968         memset(&inode_buf, 0, sizeof(inode_buf));
 969         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 970                 return;
 971 }
 972
 973 void do_freei(int argc, char *argv[])
 974 {
 975         unsigned int    len = 1;
 976         int             err = 0;
 977         ext2_ino_t      inode;
 978
 979         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
 980                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
 981                 return;
 982         if (check_fs_read_write(argv[0]))
 983                 return;
 984
 985         inode = string_to_inode(argv[1]);
 986         if (!inode)
 987                 return;
 988
 989         if (argc == 3) {
 990                 len = parse_ulong(argv[2], argv[0], "length", &err);
 991                 if (err)
 992                         return;
 993         }
 994
 995         if (len == 1 &&
 996             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
 997                 com_err(argv[0], 0, "Warning: inode already clear");
 998         while (len-- > 0)
 999                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1000         ext2fs_mark_ib_dirty(current_fs);
1001 }
1002
1003 void do_seti(int argc, char *argv[])
1004 {
1005         unsigned int    len = 1;
1006         int             err = 0;
1007         ext2_ino_t      inode;
1008
1009         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1010                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1011                 return;
1012         if (check_fs_read_write(argv[0]))
1013                 return;
1014
1015         inode = string_to_inode(argv[1]);
1016         if (!inode)
1017                 return;
1018
1019         if (argc == 3) {
1020                 len = parse_ulong(argv[2], argv[0], "length", &err);
1021                 if (err)
1022                         return;
1023         }
1024
1025         if ((len == 1) &&
1026             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1027                 com_err(argv[0], 0, "Warning: inode already set");
1028         while (len-- > 0)
1029                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1030         ext2fs_mark_ib_dirty(current_fs);
1031 }
1032 #endif /* READ_ONLY */
1033
1034 void do_testi(int argc, char *argv[])
1035 {
1036         ext2_ino_t inode;
1037
1038         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1039                 return;
1040
1041         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1042                 printf("Inode %u is marked in use\n", inode);
1043         else
1044                 printf("Inode %u is not in use\n", inode);
1045 }
1046
1047 #ifndef READ_ONLY
1048 void do_freeb(int argc, char *argv[])
1049 {
1050         blk64_t block;
1051         blk64_t count = 1;
1052
1053         if (common_block_args_process(argc, argv, &block, &count))
1054                 return;
1055         if (check_fs_read_write(argv[0]))
1056                 return;
1057         while (count-- > 0) {
1058                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1059                         com_err(argv[0], 0, "Warning: block %llu already clear",
1060                                 block);
1061                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1062                 block++;
1063         }
1064         ext2fs_mark_bb_dirty(current_fs);
1065 }
1066
1067 void do_setb(int argc, char *argv[])
1068 {
1069         blk64_t block;
1070         blk64_t count = 1;
1071
1072         if (common_block_args_process(argc, argv, &block, &count))
1073                 return;
1074         if (check_fs_read_write(argv[0]))
1075                 return;
1076         while (count-- > 0) {
1077                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1078                         com_err(argv[0], 0, "Warning: block %llu already set",
1079                                 block);
1080                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1081                 block++;
1082         }
1083         ext2fs_mark_bb_dirty(current_fs);
1084 }
1085 #endif /* READ_ONLY */
1086
1087 void do_testb(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         while (count-- > 0) {
1095                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1096                         printf("Block %llu marked in use\n", block);
1097                 else
1098                         printf("Block %llu not in use\n", block);
1099                 block++;
1100         }
1101 }
1102
1103 #ifndef READ_ONLY
1104 static void modify_u8(char *com, const char *prompt,
1105                       const char *format, __u8 *val)
1106 {
1107         char buf[200];
1108         unsigned long v;
1109         char *tmp;
1110
1111         sprintf(buf, format, *val);
1112         printf("%30s    [%s] ", prompt, buf);
1113         if (!fgets(buf, sizeof(buf), stdin))
1114                 return;
1115         if (buf[strlen (buf) - 1] == '\n')
1116                 buf[strlen (buf) - 1] = '\0';
1117         if (!buf[0])
1118                 return;
1119         v = strtoul(buf, &tmp, 0);
1120         if (*tmp)
1121                 com_err(com, 0, "Bad value - %s", buf);
1122         else
1123                 *val = v;
1124 }
1125
1126 static void modify_u16(char *com, const char *prompt,
1127                        const char *format, __u16 *val)
1128 {
1129         char buf[200];
1130         unsigned long v;
1131         char *tmp;
1132
1133         sprintf(buf, format, *val);
1134         printf("%30s    [%s] ", prompt, buf);
1135         if (!fgets(buf, sizeof(buf), stdin))
1136                 return;
1137         if (buf[strlen (buf) - 1] == '\n')
1138                 buf[strlen (buf) - 1] = '\0';
1139         if (!buf[0])
1140                 return;
1141         v = strtoul(buf, &tmp, 0);
1142         if (*tmp)
1143                 com_err(com, 0, "Bad value - %s", buf);
1144         else
1145                 *val = v;
1146 }
1147
1148 static void modify_u32(char *com, const char *prompt,
1149                        const char *format, __u32 *val)
1150 {
1151         char buf[200];
1152         unsigned long v;
1153         char *tmp;
1154
1155         sprintf(buf, format, *val);
1156         printf("%30s    [%s] ", prompt, buf);
1157         if (!fgets(buf, sizeof(buf), stdin))
1158                 return;
1159         if (buf[strlen (buf) - 1] == '\n')
1160                 buf[strlen (buf) - 1] = '\0';
1161         if (!buf[0])
1162                 return;
1163         v = strtoul(buf, &tmp, 0);
1164         if (*tmp)
1165                 com_err(com, 0, "Bad value - %s", buf);
1166         else
1167                 *val = v;
1168 }
1169
1170
1171 void do_modify_inode(int argc, char *argv[])
1172 {
1173         struct ext2_inode inode;
1174         ext2_ino_t      inode_num;
1175         int             i;
1176         unsigned char   *frag, *fsize;
1177         char            buf[80];
1178         int             os;
1179         const char      *hex_format = "0x%x";
1180         const char      *octal_format = "0%o";
1181         const char      *decimal_format = "%d";
1182         const char      *unsignedlong_format = "%lu";
1183
1184         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1185                 return;
1186
1187         os = current_fs->super->s_creator_os;
1188
1189         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1190                 return;
1191
1192         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1193         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1194         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1195         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1196         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1197         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1198         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1199         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1200         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1201         if (os == EXT2_OS_LINUX)
1202                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1203                            &inode.osd2.linux2.l_i_blocks_hi);
1204         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1205         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1206         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1207 #if 0
1208         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1209 #endif
1210         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1211         if (LINUX_S_ISDIR(inode.i_mode))
1212                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1213         else
1214                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1215
1216         if (os == EXT2_OS_HURD)
1217                 modify_u32(argv[0], "Translator Block",
1218                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1219
1220         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1221         switch (os) {
1222             case EXT2_OS_HURD:
1223                 frag = &inode.osd2.hurd2.h_i_frag;
1224                 fsize = &inode.osd2.hurd2.h_i_fsize;
1225                 break;
1226             default:
1227                 frag = fsize = 0;
1228         }
1229         if (frag)
1230                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1231         if (fsize)
1232                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1233
1234         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1235                 sprintf(buf, "Direct Block #%d", i);
1236                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1237         }
1238         modify_u32(argv[0], "Indirect Block", decimal_format,
1239                     &inode.i_block[EXT2_IND_BLOCK]);
1240         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1241                     &inode.i_block[EXT2_DIND_BLOCK]);
1242         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1243                     &inode.i_block[EXT2_TIND_BLOCK]);
1244         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1245                 return;
1246 }
1247 #endif /* READ_ONLY */
1248
1249 void do_change_working_dir(int argc, char *argv[])
1250 {
1251         ext2_ino_t      inode;
1252         int             retval;
1253
1254         if (common_inode_args_process(argc, argv, &inode, 0))
1255                 return;
1256
1257         retval = ext2fs_check_directory(current_fs, inode);
1258         if (retval) {
1259                 com_err(argv[1], retval, 0);
1260                 return;
1261         }
1262         cwd = inode;
1263         return;
1264 }
1265
1266 void do_print_working_directory(int argc, char *argv[])
1267 {
1268         int     retval;
1269         char    *pathname = NULL;
1270
1271         if (common_args_process(argc, argv, 1, 1,
1272                                 "print_working_directory", "", 0))
1273                 return;
1274
1275         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1276         if (retval) {
1277                 com_err(argv[0], retval,
1278                         "while trying to get pathname of cwd");
1279         }
1280         printf("[pwd]   INODE: %6u  PATH: %s\n",
1281                cwd, pathname ? pathname : "NULL");
1282         if (pathname) {
1283                 free(pathname);
1284                 pathname = NULL;
1285         }
1286         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1287         if (retval) {
1288                 com_err(argv[0], retval,
1289                         "while trying to get pathname of root");
1290         }
1291         printf("[root]  INODE: %6u  PATH: %s\n",
1292                root, pathname ? pathname : "NULL");
1293         if (pathname) {
1294                 free(pathname);
1295                 pathname = NULL;
1296         }
1297         return;
1298 }
1299
1300 #ifndef READ_ONLY
1301 static void make_link(char *sourcename, char *destname)
1302 {
1303         ext2_ino_t      ino;
1304         struct ext2_inode inode;
1305         int             retval;
1306         ext2_ino_t      dir;
1307         char            *dest, *cp, *base_name;
1308
1309         /*
1310          * Get the source inode
1311          */
1312         ino = string_to_inode(sourcename);
1313         if (!ino)
1314                 return;
1315         base_name = strrchr(sourcename, '/');
1316         if (base_name)
1317                 base_name++;
1318         else
1319                 base_name = sourcename;
1320         /*
1321          * Figure out the destination.  First see if it exists and is
1322          * a directory.
1323          */
1324         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1325                 dest = base_name;
1326         else {
1327                 /*
1328                  * OK, it doesn't exist.  See if it is
1329                  * '<dir>/basename' or 'basename'
1330                  */
1331                 cp = strrchr(destname, '/');
1332                 if (cp) {
1333                         *cp = 0;
1334                         dir = string_to_inode(destname);
1335                         if (!dir)
1336                                 return;
1337                         dest = cp+1;
1338                 } else {
1339                         dir = cwd;
1340                         dest = destname;
1341                 }
1342         }
1343
1344         if (debugfs_read_inode(ino, &inode, sourcename))
1345                 return;
1346
1347         retval = ext2fs_link(current_fs, dir, dest, ino,
1348                              ext2_file_type(inode.i_mode));
1349         if (retval)
1350                 com_err("make_link", retval, 0);
1351         return;
1352 }
1353
1354
1355 void do_link(int argc, char *argv[])
1356 {
1357         if (common_args_process(argc, argv, 3, 3, "link",
1358                                 "<source file> <dest_name>", CHECK_FS_RW))
1359                 return;
1360
1361         make_link(argv[1], argv[2]);
1362 }
1363
1364 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1365                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1366                             blk64_t ref_block EXT2FS_ATTR((unused)),
1367                             int ref_offset EXT2FS_ATTR((unused)),
1368                             void *private EXT2FS_ATTR((unused)))
1369 {
1370         blk64_t block;
1371
1372         block = *blocknr;
1373         ext2fs_block_alloc_stats2(fs, block, +1);
1374         return 0;
1375 }
1376
1377 void do_undel(int argc, char *argv[])
1378 {
1379         ext2_ino_t      ino;
1380         struct ext2_inode inode;
1381
1382         if (common_args_process(argc, argv, 2, 3, "undelete",
1383                                 "<inode_num> [dest_name]",
1384                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1385                 return;
1386
1387         ino = string_to_inode(argv[1]);
1388         if (!ino)
1389                 return;
1390
1391         if (debugfs_read_inode(ino, &inode, argv[1]))
1392                 return;
1393
1394         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1395                 com_err(argv[1], 0, "Inode is not marked as deleted");
1396                 return;
1397         }
1398
1399         /*
1400          * XXX this function doesn't handle changing the links count on the
1401          * parent directory when undeleting a directory.
1402          */
1403         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1404         inode.i_dtime = 0;
1405
1406         if (debugfs_write_inode(ino, &inode, argv[0]))
1407                 return;
1408
1409         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1410                               mark_blocks_proc, NULL);
1411
1412         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1413
1414         if (argc > 2)
1415                 make_link(argv[1], argv[2]);
1416 }
1417
1418 static void unlink_file_by_name(char *filename)
1419 {
1420         int             retval;
1421         ext2_ino_t      dir;
1422         char            *base_name;
1423
1424         base_name = strrchr(filename, '/');
1425         if (base_name) {
1426                 *base_name++ = '\0';
1427                 dir = string_to_inode(filename);
1428                 if (!dir)
1429                         return;
1430         } else {
1431                 dir = cwd;
1432                 base_name = filename;
1433         }
1434         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1435         if (retval)
1436                 com_err("unlink_file_by_name", retval, 0);
1437         return;
1438 }
1439
1440 void do_unlink(int argc, char *argv[])
1441 {
1442         if (common_args_process(argc, argv, 2, 2, "link",
1443                                 "<pathname>", CHECK_FS_RW))
1444                 return;
1445
1446         unlink_file_by_name(argv[1]);
1447 }
1448 #endif /* READ_ONLY */
1449
1450 void do_find_free_block(int argc, char *argv[])
1451 {
1452         blk64_t free_blk, goal, first_free = 0;
1453         int             count;
1454         errcode_t       retval;
1455         char            *tmp;
1456
1457         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1458                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1459                 return;
1460         }
1461         if (check_fs_open(argv[0]))
1462                 return;
1463
1464         if (argc > 1) {
1465                 count = strtol(argv[1],&tmp,0);
1466                 if (*tmp) {
1467                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1468                         return;
1469                 }
1470         } else
1471                 count = 1;
1472
1473         if (argc > 2) {
1474                 goal = strtol(argv[2], &tmp, 0);
1475                 if (*tmp) {
1476                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1477                         return;
1478                 }
1479         }
1480         else
1481                 goal = current_fs->super->s_first_data_block;
1482
1483         printf("Free blocks found: ");
1484         free_blk = goal - 1;
1485         while (count-- > 0) {
1486                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1487                                            &free_blk);
1488                 if (first_free) {
1489                         if (first_free == free_blk)
1490                                 break;
1491                 } else
1492                         first_free = free_blk;
1493                 if (retval) {
1494                         com_err("ext2fs_new_block", retval, 0);
1495                         return;
1496                 } else
1497                         printf("%llu ", free_blk);
1498         }
1499         printf("\n");
1500 }
1501
1502 void do_find_free_inode(int argc, char *argv[])
1503 {
1504         ext2_ino_t      free_inode, dir;
1505         int             mode;
1506         int             retval;
1507         char            *tmp;
1508
1509         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1510                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1511                 return;
1512         }
1513         if (check_fs_open(argv[0]))
1514                 return;
1515
1516         if (argc > 1) {
1517                 dir = strtol(argv[1], &tmp, 0);
1518                 if (*tmp) {
1519                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1520                         return;
1521                 }
1522         }
1523         else
1524                 dir = root;
1525         if (argc > 2) {
1526                 mode = strtol(argv[2], &tmp, 0);
1527                 if (*tmp) {
1528                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1529                         return;
1530                 }
1531         } else
1532                 mode = 010755;
1533
1534         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1535         if (retval)
1536                 com_err("ext2fs_new_inode", retval, 0);
1537         else
1538                 printf("Free inode found: %u\n", free_inode);
1539 }
1540
1541 #ifndef READ_ONLY
1542 void do_write(int argc, char *argv[])
1543 {
1544         errcode_t       retval;
1545
1546         if (common_args_process(argc, argv, 3, 3, "write",
1547                                 "<native file> <new file>", CHECK_FS_RW))
1548                 return;
1549
1550         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1551         if (retval)
1552                 com_err(argv[0], retval, 0);
1553 }
1554
1555 void do_mknod(int argc, char *argv[])
1556 {
1557         unsigned long   mode, major, minor;
1558         errcode_t       retval;
1559         int             filetype, nr;
1560         struct stat     st;
1561
1562         if (check_fs_open(argv[0]))
1563                 return;
1564         if (argc < 3 || argv[2][1]) {
1565         usage:
1566                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1567                 return;
1568         }
1569
1570         mode = minor = major = 0;
1571         switch (argv[2][0]) {
1572                 case 'p':
1573                         st.st_mode = S_IFIFO;
1574                         nr = 3;
1575                         break;
1576                 case 'c':
1577                         st.st_mode = S_IFCHR;
1578                         nr = 5;
1579                         break;
1580                 case 'b':
1581                         st.st_mode = S_IFBLK;
1582                         nr = 5;
1583                         break;
1584                 default:
1585                         nr = 0;
1586         }
1587
1588         if (nr == 5) {
1589                 major = strtoul(argv[3], argv+3, 0);
1590                 minor = strtoul(argv[4], argv+4, 0);
1591                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1592                         nr = 0;
1593         }
1594
1595         if (argc != nr)
1596                 goto usage;
1597
1598         st.st_rdev = makedev(major, minor);
1599         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1600         if (retval)
1601                 com_err(argv[0], retval, 0);
1602 }
1603
1604 void do_mkdir(int argc, char *argv[])
1605 {
1606         errcode_t retval;
1607
1608         if (common_args_process(argc, argv, 2, 2, "mkdir",
1609                                 "<filename>", CHECK_FS_RW))
1610                 return;
1611
1612         retval = do_mkdir_internal(current_fs, cwd, argv[1], NULL, root);
1613         if (retval)
1614                 com_err(argv[0], retval, 0);
1615
1616 }
1617
1618 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1619                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1620                                blk64_t ref_block EXT2FS_ATTR((unused)),
1621                                int ref_offset EXT2FS_ATTR((unused)),
1622                                void *private EXT2FS_ATTR((unused)))
1623 {
1624         blk64_t block;
1625
1626         block = *blocknr;
1627         ext2fs_block_alloc_stats2(fs, block, -1);
1628         return 0;
1629 }
1630
1631 static void kill_file_by_inode(ext2_ino_t inode)
1632 {
1633         struct ext2_inode inode_buf;
1634
1635         if (debugfs_read_inode(inode, &inode_buf, 0))
1636                 return;
1637         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1638         if (debugfs_write_inode(inode, &inode_buf, 0))
1639                 return;
1640         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1641                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1642                                       NULL, release_blocks_proc, NULL);
1643         }
1644         printf("\n");
1645         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1646                                   LINUX_S_ISDIR(inode_buf.i_mode));
1647 }
1648
1649
1650 void do_kill_file(int argc, char *argv[])
1651 {
1652         ext2_ino_t inode_num;
1653
1654         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1655                 return;
1656
1657         kill_file_by_inode(inode_num);
1658 }
1659
1660 void do_rm(int argc, char *argv[])
1661 {
1662         int retval;
1663         ext2_ino_t inode_num;
1664         struct ext2_inode inode;
1665
1666         if (common_args_process(argc, argv, 2, 2, "rm",
1667                                 "<filename>", CHECK_FS_RW))
1668                 return;
1669
1670         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1671         if (retval) {
1672                 com_err(argv[0], retval, "while trying to resolve filename");
1673                 return;
1674         }
1675
1676         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1677                 return;
1678
1679         if (LINUX_S_ISDIR(inode.i_mode)) {
1680                 com_err(argv[0], 0, "file is a directory");
1681                 return;
1682         }
1683
1684         --inode.i_links_count;
1685         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1686                 return;
1687
1688         unlink_file_by_name(argv[1]);
1689         if (inode.i_links_count == 0)
1690                 kill_file_by_inode(inode_num);
1691 }
1692
1693 struct rd_struct {
1694         ext2_ino_t      parent;
1695         int             empty;
1696 };
1697
1698 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1699                       int       entry EXT2FS_ATTR((unused)),
1700                       struct ext2_dir_entry *dirent,
1701                       int       offset EXT2FS_ATTR((unused)),
1702                       int       blocksize EXT2FS_ATTR((unused)),
1703                       char      *buf EXT2FS_ATTR((unused)),
1704                       void      *private)
1705 {
1706         struct rd_struct *rds = (struct rd_struct *) private;
1707
1708         if (dirent->inode == 0)
1709                 return 0;
1710         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1711                 return 0;
1712         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1713             (dirent->name[1] == '.')) {
1714                 rds->parent = dirent->inode;
1715                 return 0;
1716         }
1717         rds->empty = 0;
1718         return 0;
1719 }
1720
1721 void do_rmdir(int argc, char *argv[])
1722 {
1723         int retval;
1724         ext2_ino_t inode_num;
1725         struct ext2_inode inode;
1726         struct rd_struct rds;
1727
1728         if (common_args_process(argc, argv, 2, 2, "rmdir",
1729                                 "<filename>", CHECK_FS_RW))
1730                 return;
1731
1732         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1733         if (retval) {
1734                 com_err(argv[0], retval, "while trying to resolve filename");
1735                 return;
1736         }
1737
1738         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1739                 return;
1740
1741         if (!LINUX_S_ISDIR(inode.i_mode)) {
1742                 com_err(argv[0], 0, "file is not a directory");
1743                 return;
1744         }
1745
1746         rds.parent = 0;
1747         rds.empty = 1;
1748
1749         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1750                                     0, rmdir_proc, &rds);
1751         if (retval) {
1752                 com_err(argv[0], retval, "while iterating over directory");
1753                 return;
1754         }
1755         if (rds.empty == 0) {
1756                 com_err(argv[0], 0, "directory not empty");
1757                 return;
1758         }
1759
1760         inode.i_links_count = 0;
1761         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1762                 return;
1763
1764         unlink_file_by_name(argv[1]);
1765         kill_file_by_inode(inode_num);
1766
1767         if (rds.parent) {
1768                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1769                         return;
1770                 if (inode.i_links_count > 1)
1771                         inode.i_links_count--;
1772                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1773                         return;
1774         }
1775 }
1776 #endif /* READ_ONLY */
1777
1778 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1779                             char *argv[] EXT2FS_ATTR((unused)))
1780 {
1781         if (current_fs)
1782                 printf("Open mode: read-%s\n",
1783                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1784         printf("Filesystem in use: %s\n",
1785                current_fs ? current_fs->device_name : "--none--");
1786 }
1787
1788 #ifndef READ_ONLY
1789 void do_expand_dir(int argc, char *argv[])
1790 {
1791         ext2_ino_t inode;
1792         int retval;
1793
1794         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1795                 return;
1796
1797         retval = ext2fs_expand_dir(current_fs, inode);
1798         if (retval)
1799                 com_err("ext2fs_expand_dir", retval, 0);
1800         return;
1801 }
1802
1803 void do_features(int argc, char *argv[])
1804 {
1805         int     i;
1806
1807         if (check_fs_open(argv[0]))
1808                 return;
1809
1810         if ((argc != 1) && check_fs_read_write(argv[0]))
1811                 return;
1812         for (i=1; i < argc; i++) {
1813                 if (e2p_edit_feature(argv[i],
1814                                      &current_fs->super->s_feature_compat, 0))
1815                         com_err(argv[0], 0, "Unknown feature: %s\n",
1816                                 argv[i]);
1817                 else
1818                         ext2fs_mark_super_dirty(current_fs);
1819         }
1820         print_features(current_fs->super, stdout);
1821 }
1822 #endif /* READ_ONLY */
1823
1824 void do_bmap(int argc, char *argv[])
1825 {
1826         ext2_ino_t      ino;
1827         blk64_t         blk, pblk;
1828         int             err;
1829         errcode_t       errcode;
1830
1831         if (common_args_process(argc, argv, 3, 3, argv[0],
1832                                 "<file> logical_blk", 0))
1833                 return;
1834
1835         ino = string_to_inode(argv[1]);
1836         if (!ino)
1837                 return;
1838         err = strtoblk(argv[0], argv[2], "logical block", &blk);
1839         if (err)
1840                 return;
1841
1842         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
1843         if (errcode) {
1844                 com_err(argv[0], errcode,
1845                         "while mapping logical block %llu\n", blk);
1846                 return;
1847         }
1848         printf("%llu\n", pblk);
1849 }
1850
1851 void do_imap(int argc, char *argv[])
1852 {
1853         ext2_ino_t      ino;
1854         unsigned long   group, block, block_nr, offset;
1855
1856         if (common_args_process(argc, argv, 2, 2, argv[0],
1857                                 "<file>", 0))
1858                 return;
1859         ino = string_to_inode(argv[1]);
1860         if (!ino)
1861                 return;
1862
1863         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1864         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1865                 EXT2_INODE_SIZE(current_fs->super);
1866         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1867         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
1868                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1869                         group);
1870                 return;
1871         }
1872         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
1873                 block;
1874         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1875
1876         printf("Inode %d is part of block group %lu\n"
1877                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1878                block_nr, offset);
1879
1880 }
1881
1882 #ifndef READ_ONLY
1883 void do_set_current_time(int argc, char *argv[])
1884 {
1885         time_t now;
1886
1887         if (common_args_process(argc, argv, 2, 2, argv[0],
1888                                 "<time>", 0))
1889                 return;
1890
1891         now = string_to_time(argv[1]);
1892         if (now == ((time_t) -1)) {
1893                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1894                         argv[1]);
1895                 return;
1896
1897         } else {
1898                 printf("Setting current time to %s\n", time_to_string(now));
1899                 current_fs->now = now;
1900         }
1901 }
1902 #endif /* READ_ONLY */
1903
1904 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
1905 {
1906         int compat, bit, ret;
1907         unsigned int feature_mask;
1908
1909         if (name) {
1910                 if (feature_type == E2P_FS_FEATURE)
1911                         ret = e2p_string2feature(name, &compat, &feature_mask);
1912                 else
1913                         ret = e2p_jrnl_string2feature(name, &compat,
1914                                                       &feature_mask);
1915                 if (ret)
1916                         return ret;
1917
1918                 if (!(supp[compat] & feature_mask))
1919                         return 1;
1920         } else {
1921                 for (compat = 0; compat < 3; compat++) {
1922                         for (bit = 0, feature_mask = 1; bit < 32;
1923                              bit++, feature_mask <<= 1) {
1924                                 if (supp[compat] & feature_mask) {
1925                                         if (feature_type == E2P_FS_FEATURE)
1926                                                 fprintf(stdout, " %s",
1927                                                 e2p_feature2string(compat,
1928                                                 feature_mask));
1929                                         else
1930                                                 fprintf(stdout, " %s",
1931                                                 e2p_jrnl_feature2string(compat,
1932                                                 feature_mask));
1933                                 }
1934                         }
1935                 }
1936                 fprintf(stdout, "\n");
1937         }
1938
1939         return 0;
1940 }
1941
1942 void do_supported_features(int argc, char *argv[])
1943 {
1944         int     ret;
1945         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
1946                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
1947                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
1948         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
1949                                  JFS_KNOWN_INCOMPAT_FEATURES,
1950                                  JFS_KNOWN_ROCOMPAT_FEATURES };
1951
1952         if (argc > 1) {
1953                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
1954                 if (ret) {
1955                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
1956                                                 argv[1]);
1957                 }
1958                 if (ret)
1959                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
1960                 else
1961                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
1962         } else {
1963                 fprintf(stdout, "Supported features:");
1964                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
1965                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
1966         }
1967 }
1968
1969 #ifndef READ_ONLY
1970 void do_punch(int argc, char *argv[])
1971 {
1972         ext2_ino_t      ino;
1973         blk64_t         start, end;
1974         int             err;
1975         errcode_t       errcode;
1976
1977         if (common_args_process(argc, argv, 3, 4, argv[0],
1978                                 "<file> start_blk [end_blk]",
1979                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1980                 return;
1981
1982         ino = string_to_inode(argv[1]);
1983         if (!ino)
1984                 return;
1985         err = strtoblk(argv[0], argv[2], "logical block", &start);
1986         if (err)
1987                 return;
1988         if (argc == 4) {
1989                 err = strtoblk(argv[0], argv[3], "logical block", &end);
1990                 if (err)
1991                         return;
1992         } else
1993                 end = ~0;
1994
1995         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
1996
1997         if (errcode) {
1998                 com_err(argv[0], errcode,
1999                         "while truncating inode %u from %llu to %llu\n", ino,
2000                         (unsigned long long) start, (unsigned long long) end);
2001                 return;
2002         }
2003 }
2004 #endif /* READ_ONLY */
2005
2006 void do_symlink(int argc, char *argv[])
2007 {
2008         errcode_t       retval;
2009
2010         if (common_args_process(argc, argv, 3, 3, "symlink",
2011                                 "<filename> <target>", CHECK_FS_RW))
2012                 return;
2013
2014         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2015         if (retval)
2016                 com_err(argv[0], retval, 0);
2017
2018 }
2019
2020 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2021 {
2022 #if CONFIG_MMP
2023         struct ext2_super_block *sb;
2024         struct mmp_struct *mmp_s;
2025         time_t t;
2026         errcode_t retval = 0;
2027
2028         if (check_fs_open(argv[0]))
2029                 return;
2030
2031         sb  = current_fs->super;
2032
2033         if (current_fs->mmp_buf == NULL) {
2034                 retval = ext2fs_get_mem(current_fs->blocksize,
2035                                         &current_fs->mmp_buf);
2036                 if (retval) {
2037                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2038                         return;
2039                 }
2040         }
2041
2042         mmp_s = current_fs->mmp_buf;
2043
2044         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2045                                  current_fs->mmp_buf);
2046         if (retval) {
2047                 com_err(argv[0], retval, "reading MMP block.\n");
2048                 return;
2049         }
2050
2051         t = mmp_s->mmp_time;
2052         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2053         fprintf(stdout, "update_interval: %d\n",
2054                 current_fs->super->s_mmp_update_interval);
2055         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2056         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2057         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2058         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2059         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2060         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2061         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2062 #else
2063         fprintf(stdout, "MMP is unsupported, please recompile with "
2064                         "--enable-mmp\n");
2065 #endif
2066 }
2067
2068 static int source_file(const char *cmd_file, int ss_idx)
2069 {
2070         FILE            *f;
2071         char            buf[BUFSIZ];
2072         char            *cp;
2073         int             exit_status = 0;
2074         int             retval;
2075
2076         if (strcmp(cmd_file, "-") == 0)
2077                 f = stdin;
2078         else {
2079                 f = fopen(cmd_file, "r");
2080                 if (!f) {
2081                         perror(cmd_file);
2082                         exit(1);
2083                 }
2084         }
2085         fflush(stdout);
2086         fflush(stderr);
2087         setbuf(stdout, NULL);
2088         setbuf(stderr, NULL);
2089         while (!feof(f)) {
2090                 if (fgets(buf, sizeof(buf), f) == NULL)
2091                         break;
2092                 cp = strchr(buf, '\n');
2093                 if (cp)
2094                         *cp = 0;
2095                 cp = strchr(buf, '\r');
2096                 if (cp)
2097                         *cp = 0;
2098                 printf("debugfs: %s\n", buf);
2099                 retval = ss_execute_line(ss_idx, buf);
2100                 if (retval) {
2101                         ss_perror(ss_idx, retval, buf);
2102                         exit_status++;
2103                 }
2104         }
2105         if (f != stdin)
2106                 fclose(f);
2107         return exit_status;
2108 }
2109
2110 int main(int argc, char **argv)
2111 {
2112         int             retval;
2113         const char      *usage =
2114                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2115                 "[-R request] [-V] ["
2116 #ifndef READ_ONLY
2117                 "[-w] "
2118 #endif
2119                 "[-c] device]";
2120         int             c;
2121         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2122         char            *request = 0;
2123         int             exit_status = 0;
2124         char            *cmd_file = 0;
2125         blk64_t         superblock = 0;
2126         blk64_t         blocksize = 0;
2127         int             catastrophic = 0;
2128         char            *data_filename = 0;
2129 #ifdef READ_ONLY
2130         const char      *opt_string = "nicR:f:b:s:Vd:D";
2131 #else
2132         const char      *opt_string = "niwcR:f:b:s:Vd:D";
2133 #endif
2134
2135         if (debug_prog_name == 0)
2136 #ifdef READ_ONLY
2137                 debug_prog_name = "rdebugfs";
2138 #else
2139                 debug_prog_name = "debugfs";
2140 #endif
2141         add_error_table(&et_ext2_error_table);
2142         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2143                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2144
2145         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2146                 switch (c) {
2147                 case 'R':
2148                         request = optarg;
2149                         break;
2150                 case 'f':
2151                         cmd_file = optarg;
2152                         break;
2153                 case 'd':
2154                         data_filename = optarg;
2155                         break;
2156                 case 'i':
2157                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2158                         break;
2159                 case 'n':
2160                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2161                         break;
2162 #ifndef READ_ONLY
2163                 case 'w':
2164                         open_flags |= EXT2_FLAG_RW;
2165                         break;
2166 #endif
2167                 case 'D':
2168                         open_flags |= EXT2_FLAG_DIRECT_IO;
2169                         break;
2170                 case 'b':
2171                         blocksize = parse_ulong(optarg, argv[0],
2172                                                 "block size", 0);
2173                         break;
2174                 case 's':
2175                         retval = strtoblk(argv[0], optarg,
2176                                           "superblock block number",
2177                                           &superblock);
2178                         if (retval)
2179                                 return 1;
2180                         break;
2181                 case 'c':
2182                         catastrophic = 1;
2183                         break;
2184                 case 'V':
2185                         /* Print version number and exit */
2186                         fprintf(stderr, "\tUsing %s\n",
2187                                 error_message(EXT2_ET_BASE));
2188                         exit(0);
2189                 default:
2190                         com_err(argv[0], 0, usage, debug_prog_name);
2191                         return 1;
2192                 }
2193         }
2194         if (optind < argc)
2195                 open_filesystem(argv[optind], open_flags,
2196                                 superblock, blocksize, catastrophic,
2197                                 data_filename);
2198
2199         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2200                                        &debug_cmds, &retval);
2201         if (retval) {
2202                 ss_perror(sci_idx, retval, "creating invocation");
2203                 exit(1);
2204         }
2205         ss_get_readline(sci_idx);
2206
2207         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2208         if (retval) {
2209                 ss_perror(sci_idx, retval, "adding standard requests");
2210                 exit (1);
2211         }
2212         if (extra_cmds)
2213                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2214         if (retval) {
2215                 ss_perror(sci_idx, retval, "adding extra requests");
2216                 exit (1);
2217         }
2218         if (request) {
2219                 retval = 0;
2220                 retval = ss_execute_line(sci_idx, request);
2221                 if (retval) {
2222                         ss_perror(sci_idx, retval, request);
2223                         exit_status++;
2224                 }
2225         } else if (cmd_file) {
2226                 exit_status = source_file(cmd_file, sci_idx);
2227         } else {
2228                 ss_listen(sci_idx);
2229         }
2230
2231         ss_delete_invocation(sci_idx);
2232
2233         if (current_fs)
2234                 close_filesystem();
2235
2236         remove_error_table(&et_ext2_error_table);
2237         return exit_status;
2238 }