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(current_fs);
 124         if (retval)
 125                 com_err(device, retval, "while trying to close filesystem");
 126         current_fs = NULL;
 127 }
 128
 129 void do_open_filesys(int argc, char **argv)
 130 {
 131         int     c, err;
 132         int     catastrophic = 0;
 133         blk64_t superblock = 0;
 134         blk64_t blocksize = 0;
 135         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 136         char    *data_filename = 0;
 137
 138         reset_getopt();
 139         while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
 140                 switch (c) {
 141                 case 'i':
 142                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 143                         break;
 144                 case 'w':
 145 #ifdef READ_ONLY
 146                         goto print_usage;
 147 #else
 148                         open_flags |= EXT2_FLAG_RW;
 149 #endif /* READ_ONLY */
 150                         break;
 151                 case 'f':
 152                         open_flags |= EXT2_FLAG_FORCE;
 153                         break;
 154                 case 'e':
 155                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 156                         break;
 157                 case 'c':
 158                         catastrophic = 1;
 159                         break;
 160                 case 'd':
 161                         data_filename = optarg;
 162                         break;
 163                 case 'D':
 164                         open_flags |= EXT2_FLAG_DIRECT_IO;
 165                         break;
 166                 case 'b':
 167                         blocksize = parse_ulong(optarg, argv[0],
 168                                                 "block size", &err);
 169                         if (err)
 170                                 return;
 171                         break;
 172                 case 's':
 173                         err = strtoblk(argv[0], optarg,
 174                                        "superblock block number", &superblock);
 175                         if (err)
 176                                 return;
 177                         break;
 178                 default:
 179                         goto print_usage;
 180                 }
 181         }
 182         if (optind != argc-1) {
 183                 goto print_usage;
 184         }
 185         if (check_fs_not_open(argv[0]))
 186                 return;
 187         open_filesystem(argv[optind], open_flags,
 188                         superblock, blocksize, catastrophic,
 189                         data_filename);
 190         return;
 191
 192 print_usage:
 193         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 194                 "[-d image_filename] [-c] [-i] [-f] [-e] [-D] "
 195 #ifndef READ_ONLY
 196                 "[-w] "
 197 #endif
 198                 "<device>\n", argv[0]);
 199 }
 200
 201 void do_lcd(int argc, char **argv)
 202 {
 203         if (argc != 2) {
 204                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 205                 return;
 206         }
 207
 208         if (chdir(argv[1]) == -1) {
 209                 com_err(argv[0], errno,
 210                         "while trying to change native directory to %s",
 211                         argv[1]);
 212                 return;
 213         }
 214 }
 215
 216 static void close_filesystem(NOARGS)
 217 {
 218         int     retval;
 219
 220         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 221                 retval = ext2fs_write_inode_bitmap(current_fs);
 222                 if (retval)
 223                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 224         }
 225         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 226                 retval = ext2fs_write_block_bitmap(current_fs);
 227                 if (retval)
 228                         com_err("ext2fs_write_block_bitmap", retval, 0);
 229         }
 230         if (current_qctx)
 231                 quota_release_context(&current_qctx);
 232         retval = ext2fs_close(current_fs);
 233         if (retval)
 234                 com_err("ext2fs_close", retval, 0);
 235         current_fs = NULL;
 236         return;
 237 }
 238
 239 void do_close_filesys(int argc, char **argv)
 240 {
 241         int     c;
 242
 243         if (check_fs_open(argv[0]))
 244                 return;
 245
 246         reset_getopt();
 247         while ((c = getopt (argc, argv, "a")) != EOF) {
 248                 switch (c) {
 249                 case 'a':
 250                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 251                         break;
 252                 default:
 253                         goto print_usage;
 254                 }
 255         }
 256
 257         if (argc > optind) {
 258         print_usage:
 259                 com_err(0, 0, "Usage: close_filesys [-a]");
 260                 return;
 261         }
 262
 263         close_filesystem();
 264 }
 265
 266 #ifndef READ_ONLY
 267 void do_init_filesys(int argc, char **argv)
 268 {
 269         struct ext2_super_block param;
 270         errcode_t       retval;
 271         int             err;
 272         blk64_t         blocks;
 273
 274         if (common_args_process(argc, argv, 3, 3, "initialize",
 275                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 276                 return;
 277
 278         memset(&param, 0, sizeof(struct ext2_super_block));
 279         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 280         if (err)
 281                 return;
 282         ext2fs_blocks_count_set(&param, blocks);
 283         retval = ext2fs_initialize(argv[1], 0, &param,
 284                                    unix_io_manager, &current_fs);
 285         if (retval) {
 286                 com_err(argv[1], retval, "while initializing filesystem");
 287                 current_fs = NULL;
 288                 return;
 289         }
 290         root = cwd = EXT2_ROOT_INO;
 291         return;
 292 }
 293
 294 static void print_features(struct ext2_super_block * s, FILE *f)
 295 {
 296         int     i, j, printed=0;
 297         __u32   *mask = &s->s_feature_compat, m;
 298
 299         fputs("Filesystem features:", f);
 300         for (i=0; i <3; i++,mask++) {
 301                 for (j=0,m=1; j < 32; j++, m<<=1) {
 302                         if (*mask & m) {
 303                                 fprintf(f, " %s", e2p_feature2string(i, m));
 304                                 printed++;
 305                         }
 306                 }
 307         }
 308         if (printed == 0)
 309                 fputs("(none)", f);
 310         fputs("\n", f);
 311 }
 312 #endif /* READ_ONLY */
 313
 314 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 315                           const char *str, int *first, FILE *f)
 316 {
 317         if (ext2fs_bg_flags_test(fs, group, mask)) {
 318                 if (*first) {
 319                         fputs("           [", f);
 320                         *first = 0;
 321                 } else
 322                         fputs(", ", f);
 323                 fputs(str, f);
 324         }
 325 }
 326
 327 void do_show_super_stats(int argc, char *argv[])
 328 {
 329         const char *units ="block";
 330         dgrp_t  i;
 331         FILE    *out;
 332         int     c, header_only = 0;
 333         int     numdirs = 0, first, gdt_csum;
 334
 335         reset_getopt();
 336         while ((c = getopt (argc, argv, "h")) != EOF) {
 337                 switch (c) {
 338                 case 'h':
 339                         header_only++;
 340                         break;
 341                 default:
 342                         goto print_usage;
 343                 }
 344         }
 345         if (optind != argc) {
 346                 goto print_usage;
 347         }
 348         if (check_fs_open(argv[0]))
 349                 return;
 350         out = open_pager();
 351
 352         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 353                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 354                 units = "cluster";
 355
 356         list_super2(current_fs->super, out);
 357         for (i=0; i < current_fs->group_desc_count; i++)
 358                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 359         fprintf(out, "Directories:              %d\n", numdirs);
 360
 361         if (header_only) {
 362                 close_pager(out);
 363                 return;
 364         }
 365
 366         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 367         for (i = 0; i < current_fs->group_desc_count; i++) {
 368                 fprintf(out, " Group %2d: block bitmap at %llu, "
 369                         "inode bitmap at %llu, "
 370                         "inode table at %llu\n"
 371                         "           %u free %s%s, "
 372                         "%u free %s, "
 373                         "%u used %s%s",
 374                         i, ext2fs_block_bitmap_loc(current_fs, i),
 375                         ext2fs_inode_bitmap_loc(current_fs, i),
 376                         ext2fs_inode_table_loc(current_fs, i),
 377                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 378                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 379                         "s" : "",
 380                         ext2fs_bg_free_inodes_count(current_fs, i),
 381                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 382                         "inodes" : "inode",
 383                         ext2fs_bg_used_dirs_count(current_fs, i),
 384                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 385                                 : "directory", gdt_csum ? ", " : "\n");
 386                 if (gdt_csum)
 387                         fprintf(out, "%u unused %s\n",
 388                                 ext2fs_bg_itable_unused(current_fs, i),
 389                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 390                                 "inodes" : "inode");
 391                 first = 1;
 392                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 393                               &first, out);
 394                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 395                               &first, out);
 396                 if (gdt_csum) {
 397                         fprintf(out, "%sChecksum 0x%04x",
 398                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 399                         first = 0;
 400                 }
 401                 if (!first)
 402                         fputs("]\n", out);
 403         }
 404         close_pager(out);
 405         return;
 406 print_usage:
 407         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 408 }
 409
 410 #ifndef READ_ONLY
 411 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 412                       char **argv EXT2FS_ATTR((unused)))
 413 {
 414         if (check_fs_open(argv[0]))
 415                 return;
 416         if (check_fs_read_write(argv[0]))
 417                 return;
 418
 419         if (argv[1] && !strcmp(argv[1], "-clean"))
 420                 current_fs->super->s_state |= EXT2_VALID_FS;
 421         else
 422                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 423         ext2fs_mark_super_dirty(current_fs);
 424 }
 425 #endif /* READ_ONLY */
 426
 427 struct list_blocks_struct {
 428         FILE            *f;
 429         e2_blkcnt_t     total;
 430         blk64_t         first_block, last_block;
 431         e2_blkcnt_t     first_bcnt, last_bcnt;
 432         e2_blkcnt_t     first;
 433 };
 434
 435 static void finish_range(struct list_blocks_struct *lb)
 436 {
 437         if (lb->first_block == 0)
 438                 return;
 439         if (lb->first)
 440                 lb->first = 0;
 441         else
 442                 fprintf(lb->f, ", ");
 443         if (lb->first_block == lb->last_block)
 444                 fprintf(lb->f, "(%lld):%llu",
 445                         (long long)lb->first_bcnt, lb->first_block);
 446         else
 447                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 448                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 449                         lb->first_block, lb->last_block);
 450         lb->first_block = 0;
 451 }
 452
 453 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 454                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 455                             blk64_t ref_block EXT2FS_ATTR((unused)),
 456                             int ref_offset EXT2FS_ATTR((unused)),
 457                             void *private)
 458 {
 459         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 460
 461         lb->total++;
 462         if (blockcnt >= 0) {
 463                 /*
 464                  * See if we can add on to the existing range (if it exists)
 465                  */
 466                 if (lb->first_block &&
 467                     (lb->last_block+1 == *blocknr) &&
 468                     (lb->last_bcnt+1 == blockcnt)) {
 469                         lb->last_block = *blocknr;
 470                         lb->last_bcnt = blockcnt;
 471                         return 0;
 472                 }
 473                 /*
 474                  * Start a new range.
 475                  */
 476                 finish_range(lb);
 477                 lb->first_block = lb->last_block = *blocknr;
 478                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 479                 return 0;
 480         }
 481         /*
 482          * Not a normal block.  Always force a new range.
 483          */
 484         finish_range(lb);
 485         if (lb->first)
 486                 lb->first = 0;
 487         else
 488                 fprintf(lb->f, ", ");
 489         if (blockcnt == -1)
 490                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 491         else if (blockcnt == -2)
 492                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 493         else if (blockcnt == -3)
 494                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 495         return 0;
 496 }
 497
 498 static void internal_dump_inode_extra(FILE *out,
 499                                       const char *prefix EXT2FS_ATTR((unused)),
 500                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 501                                       struct ext2_inode_large *inode)
 502 {
 503         struct ext2_ext_attr_entry *entry;
 504         __u32 *magic;
 505         char *start, *end;
 506         unsigned int storage_size;
 507
 508         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 509         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 510                         EXT2_GOOD_OLD_INODE_SIZE) {
 511                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 512                                 inode->i_extra_isize);
 513                 return;
 514         }
 515 }
 516
 517 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 518 {
 519         struct list_blocks_struct lb;
 520
 521         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 522         lb.total = 0;
 523         lb.first_block = 0;
 524         lb.f = f;
 525         lb.first = 1;
 526         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 527                               list_blocks_proc, (void *)&lb);
 528         finish_range(&lb);
 529         if (lb.total)
 530                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 531         fprintf(f,"\n");
 532 }
 533
 534 static int int_log10(unsigned long long arg)
 535 {
 536         int     l = 0;
 537
 538         arg = arg / 10;
 539         while (arg) {
 540                 l++;
 541                 arg = arg / 10;
 542         }
 543         return l;
 544 }
 545
 546 #define DUMP_LEAF_EXTENTS       0x01
 547 #define DUMP_NODE_EXTENTS       0x02
 548 #define DUMP_EXTENT_TABLE       0x04
 549
 550 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 551                          int flags, int logical_width, int physical_width)
 552 {
 553         ext2_extent_handle_t    handle;
 554         struct ext2fs_extent    extent;
 555         struct ext2_extent_info info;
 556         int                     op = EXT2_EXTENT_ROOT;
 557         unsigned int            printed = 0;
 558         errcode_t               errcode;
 559
 560         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 561         if (errcode)
 562                 return;
 563
 564         if (flags & DUMP_EXTENT_TABLE)
 565                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 566                         (logical_width*2)+3, "Logical",
 567                         (physical_width*2)+3, "Physical");
 568         else
 569                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 570
 571         while (1) {
 572                 errcode = ext2fs_extent_get(handle, op, &extent);
 573
 574                 if (errcode)
 575                         break;
 576
 577                 op = EXT2_EXTENT_NEXT;
 578
 579                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 580                         continue;
 581
 582                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 583                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 584                                 continue;
 585                 } else {
 586                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 587                                 continue;
 588                 }
 589
 590                 errcode = ext2fs_extent_get_info(handle, &info);
 591                 if (errcode)
 592                         continue;
 593
 594                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 595                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 596                                 continue;
 597
 598                         if (flags & DUMP_EXTENT_TABLE) {
 599                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 600                                         "%*llu%*s %6u\n",
 601                                         info.curr_level, info.max_depth,
 602                                         info.curr_entry, info.num_entries,
 603                                         logical_width,
 604                                         extent.e_lblk,
 605                                         logical_width,
 606                                         extent.e_lblk + (extent.e_len - 1),
 607                                         physical_width,
 608                                         extent.e_pblk,
 609                                         physical_width+3, "", extent.e_len);
 610                                 continue;
 611                         }
 612
 613                         fprintf(f, "%s(ETB%d):%lld",
 614                                 printed ? ", " : "", info.curr_level,
 615                                 extent.e_pblk);
 616                         printed = 1;
 617                         continue;
 618                 }
 619
 620                 if (flags & DUMP_EXTENT_TABLE) {
 621                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 622                                 "%*llu - %*llu %6u %s\n",
 623                                 info.curr_level, info.max_depth,
 624                                 info.curr_entry, info.num_entries,
 625                                 logical_width,
 626                                 extent.e_lblk,
 627                                 logical_width,
 628                                 extent.e_lblk + (extent.e_len - 1),
 629                                 physical_width,
 630                                 extent.e_pblk,
 631                                 physical_width,
 632                                 extent.e_pblk + (extent.e_len - 1),
 633                                 extent.e_len,
 634                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 635                                         "Uninit" : "");
 636                         continue;
 637                 }
 638
 639                 if (extent.e_len == 0)
 640                         continue;
 641                 else if (extent.e_len == 1)
 642                         fprintf(f,
 643                                 "%s(%lld%s):%lld",
 644                                 printed ? ", " : "",
 645                                 extent.e_lblk,
 646                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 647                                 "[u]" : "",
 648                                 extent.e_pblk);
 649                 else
 650                         fprintf(f,
 651                                 "%s(%lld-%lld%s):%lld-%lld",
 652                                 printed ? ", " : "",
 653                                 extent.e_lblk,
 654                                 extent.e_lblk + (extent.e_len - 1),
 655                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 656                                         "[u]" : "",
 657                                 extent.e_pblk,
 658                                 extent.e_pblk + (extent.e_len - 1));
 659                 printed = 1;
 660         }
 661         if (printed)
 662                 fprintf(f, "\n");
 663         ext2fs_extent_free(handle);
 664 }
 665
 666 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 667 {
 668         errcode_t retval;
 669         size_t size;
 670
 671         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 672         if (!retval)
 673                 fprintf(out, "%sSize of inline data: %zu", prefix, size);
 674 }
 675
 676 void internal_dump_inode(FILE *out, const char *prefix,
 677                          ext2_ino_t inode_num, struct ext2_inode *inode,
 678                          int do_dump_blocks)
 679 {
 680         const char *i_type;
 681         char frag, fsize;
 682         int os = current_fs->super->s_creator_os;
 683         struct ext2_inode_large *large_inode;
 684         int is_large_inode = 0;
 685
 686         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 687                 is_large_inode = 1;
 688         large_inode = (struct ext2_inode_large *) inode;
 689
 690         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 691         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 692         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 693         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 694         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 695         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 696         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 697         else i_type = "bad type";
 698         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 699         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 700                 prefix, inode->i_mode & 0777, inode->i_flags);
 701         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 702                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 703                         prefix, inode->i_generation, large_inode->i_version_hi,
 704                         inode->osd1.linux1.l_i_version);
 705         } else {
 706                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 707                         inode->i_generation, inode->osd1.linux1.l_i_version);
 708         }
 709         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 710                 prefix, inode_uid(*inode), inode_gid(*inode));
 711         if (LINUX_S_ISREG(inode->i_mode))
 712                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 713         else
 714                 fprintf(out, "%d\n", inode->i_size);
 715         if (os == EXT2_OS_HURD)
 716                 fprintf(out,
 717                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 718                         prefix,
 719                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 720                         inode->osd1.hurd1.h_i_translator);
 721         else
 722                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 723                         prefix,
 724                         inode->i_file_acl | ((long long)
 725                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 726                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 727         if (os == EXT2_OS_LINUX)
 728                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 729                         prefix, inode->i_links_count,
 730                         (((unsigned long long)
 731                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 732                         inode->i_blocks);
 733         else
 734                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 735                         prefix, inode->i_links_count, inode->i_blocks);
 736         switch (os) {
 737             case EXT2_OS_HURD:
 738                 frag = inode->osd2.hurd2.h_i_frag;
 739                 fsize = inode->osd2.hurd2.h_i_fsize;
 740                 break;
 741             default:
 742                 frag = fsize = 0;
 743         }
 744         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 745                 prefix, inode->i_faddr, frag, fsize);
 746         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 747                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 748                         inode->i_ctime, large_inode->i_ctime_extra,
 749                         time_to_string(inode->i_ctime));
 750                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 751                         inode->i_atime, large_inode->i_atime_extra,
 752                         time_to_string(inode->i_atime));
 753                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 754                         inode->i_mtime, large_inode->i_mtime_extra,
 755                         time_to_string(inode->i_mtime));
 756                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 757                         large_inode->i_crtime, large_inode->i_crtime_extra,
 758                         time_to_string(large_inode->i_crtime));
 759         } else {
 760                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 761                         time_to_string(inode->i_ctime));
 762                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 763                         time_to_string(inode->i_atime));
 764                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 765                         time_to_string(inode->i_mtime));
 766         }
 767         if (inode->i_dtime)
 768           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 769                   time_to_string(inode->i_dtime));
 770         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 771                 internal_dump_inode_extra(out, prefix, inode_num,
 772                                           (struct ext2_inode_large *) inode);
 773         dump_inode_attributes(out, inode_num);
 774         if (current_fs->super->s_creator_os == EXT2_OS_LINUX &&
 775             current_fs->super->s_feature_ro_compat &
 776                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
 777                 __u32 crc = inode->i_checksum_lo;
 778                 if (is_large_inode &&
 779                     large_inode->i_extra_isize >=
 780                                 (offsetof(struct ext2_inode_large,
 781                                           i_checksum_hi) -
 782                                  EXT2_GOOD_OLD_INODE_SIZE))
 783                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 784                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 785         }
 786
 787         if (LINUX_S_ISLNK(inode->i_mode) &&
 788             ext2fs_inode_data_blocks(current_fs,inode) == 0 &&
 789             !(inode->i_flags & EXT4_INLINE_DATA_FL))
 790                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 791                         (int) inode->i_size, (char *)inode->i_block);
 792         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 793                 int major, minor;
 794                 const char *devnote;
 795
 796                 if (inode->i_block[0]) {
 797                         major = (inode->i_block[0] >> 8) & 255;
 798                         minor = inode->i_block[0] & 255;
 799                         devnote = "";
 800                 } else {
 801                         major = (inode->i_block[1] & 0xfff00) >> 8;
 802                         minor = ((inode->i_block[1] & 0xff) |
 803                                  ((inode->i_block[1] >> 12) & 0xfff00));
 804                         devnote = "(New-style) ";
 805                 }
 806                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 807                         devnote, major, minor, major, minor);
 808         } else if (do_dump_blocks) {
 809                 if (inode->i_flags & EXT4_EXTENTS_FL)
 810                         dump_extents(out, prefix, inode_num,
 811                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 812                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 813                         dump_inline_data(out, prefix, inode_num);
 814                 else
 815                         dump_blocks(out, prefix, inode_num);
 816         }
 817 }
 818
 819 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 820 {
 821         FILE    *out;
 822
 823         out = open_pager();
 824         internal_dump_inode(out, "", inode_num, inode, 1);
 825         close_pager(out);
 826 }
 827
 828 void do_stat(int argc, char *argv[])
 829 {
 830         ext2_ino_t      inode;
 831         struct ext2_inode * inode_buf;
 832
 833         if (check_fs_open(argv[0]))
 834                 return;
 835
 836         inode_buf = (struct ext2_inode *)
 837                         malloc(EXT2_INODE_SIZE(current_fs->super));
 838         if (!inode_buf) {
 839                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 840                 return;
 841         }
 842
 843         if (common_inode_args_process(argc, argv, &inode, 0)) {
 844                 free(inode_buf);
 845                 return;
 846         }
 847
 848         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 849                                         EXT2_INODE_SIZE(current_fs->super))) {
 850                 free(inode_buf);
 851                 return;
 852         }
 853
 854         dump_inode(inode, inode_buf);
 855         free(inode_buf);
 856         return;
 857 }
 858
 859 void do_dump_extents(int argc, char **argv)
 860 {
 861         struct ext2_inode inode;
 862         ext2_ino_t      ino;
 863         FILE            *out;
 864         int             c, flags = 0;
 865         int             logical_width;
 866         int             physical_width;
 867
 868         reset_getopt();
 869         while ((c = getopt(argc, argv, "nl")) != EOF) {
 870                 switch (c) {
 871                 case 'n':
 872                         flags |= DUMP_NODE_EXTENTS;
 873                         break;
 874                 case 'l':
 875                         flags |= DUMP_LEAF_EXTENTS;
 876                         break;
 877                 }
 878         }
 879
 880         if (argc != optind + 1) {
 881                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 882                 return;
 883         }
 884
 885         if (flags == 0)
 886                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 887         flags |= DUMP_EXTENT_TABLE;
 888
 889         if (check_fs_open(argv[0]))
 890                 return;
 891
 892         ino = string_to_inode(argv[optind]);
 893         if (ino == 0)
 894                 return;
 895
 896         if (debugfs_read_inode(ino, &inode, argv[0]))
 897                 return;
 898
 899         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 900                 fprintf(stderr, "%s: does not uses extent block maps\n",
 901                         argv[optind]);
 902                 return;
 903         }
 904
 905         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 906                                   current_fs->blocksize) + 1;
 907         if (logical_width < 5)
 908                 logical_width = 5;
 909         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 910         if (physical_width < 5)
 911                 physical_width = 5;
 912
 913         out = open_pager();
 914         dump_extents(out, "", ino, flags, logical_width, physical_width);
 915         close_pager(out);
 916         return;
 917 }
 918
 919 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 920                              blk64_t *blocknr,
 921                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 922                              blk64_t ref_block EXT2FS_ATTR((unused)),
 923                              int ref_offset EXT2FS_ATTR((unused)),
 924                              void *private EXT2FS_ATTR((unused)))
 925 {
 926         printf("%llu ", *blocknr);
 927         return 0;
 928 }
 929
 930 void do_blocks(int argc, char *argv[])
 931 {
 932         ext2_ino_t      inode;
 933
 934         if (check_fs_open(argv[0]))
 935                 return;
 936
 937         if (common_inode_args_process(argc, argv, &inode, 0)) {
 938                 return;
 939         }
 940
 941         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 942                               print_blocks_proc, NULL);
 943         fputc('\n', stdout);
 944         return;
 945 }
 946
 947 void do_chroot(int argc, char *argv[])
 948 {
 949         ext2_ino_t inode;
 950         int retval;
 951
 952         if (common_inode_args_process(argc, argv, &inode, 0))
 953                 return;
 954
 955         retval = ext2fs_check_directory(current_fs, inode);
 956         if (retval)  {
 957                 com_err(argv[1], retval, 0);
 958                 return;
 959         }
 960         root = inode;
 961 }
 962
 963 #ifndef READ_ONLY
 964 void do_clri(int argc, char *argv[])
 965 {
 966         ext2_ino_t inode;
 967         struct ext2_inode inode_buf;
 968
 969         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 970                 return;
 971
 972         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 973                 return;
 974         memset(&inode_buf, 0, sizeof(inode_buf));
 975         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 976                 return;
 977 }
 978
 979 void do_freei(int argc, char *argv[])
 980 {
 981         unsigned int    len = 1;
 982         int             err = 0;
 983         ext2_ino_t      inode;
 984
 985         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
 986                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
 987                 return;
 988         if (check_fs_read_write(argv[0]))
 989                 return;
 990
 991         inode = string_to_inode(argv[1]);
 992         if (!inode)
 993                 return;
 994
 995         if (argc == 3) {
 996                 len = parse_ulong(argv[2], argv[0], "length", &err);
 997                 if (err)
 998                         return;
 999         }
1000
1001         if (len == 1 &&
1002             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1003                 com_err(argv[0], 0, "Warning: inode already clear");
1004         while (len-- > 0)
1005                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1006         ext2fs_mark_ib_dirty(current_fs);
1007 }
1008
1009 void do_seti(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 set");
1034         while (len-- > 0)
1035                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1036         ext2fs_mark_ib_dirty(current_fs);
1037 }
1038 #endif /* READ_ONLY */
1039
1040 void do_testi(int argc, char *argv[])
1041 {
1042         ext2_ino_t inode;
1043
1044         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1045                 return;
1046
1047         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1048                 printf("Inode %u is marked in use\n", inode);
1049         else
1050                 printf("Inode %u is not in use\n", inode);
1051 }
1052
1053 #ifndef READ_ONLY
1054 void do_freeb(int argc, char *argv[])
1055 {
1056         blk64_t block;
1057         blk64_t count = 1;
1058
1059         if (common_block_args_process(argc, argv, &block, &count))
1060                 return;
1061         if (check_fs_read_write(argv[0]))
1062                 return;
1063         while (count-- > 0) {
1064                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1065                         com_err(argv[0], 0, "Warning: block %llu already clear",
1066                                 block);
1067                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1068                 block++;
1069         }
1070         ext2fs_mark_bb_dirty(current_fs);
1071 }
1072
1073 void do_setb(int argc, char *argv[])
1074 {
1075         blk64_t block;
1076         blk64_t count = 1;
1077
1078         if (common_block_args_process(argc, argv, &block, &count))
1079                 return;
1080         if (check_fs_read_write(argv[0]))
1081                 return;
1082         while (count-- > 0) {
1083                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1084                         com_err(argv[0], 0, "Warning: block %llu already set",
1085                                 block);
1086                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1087                 block++;
1088         }
1089         ext2fs_mark_bb_dirty(current_fs);
1090 }
1091 #endif /* READ_ONLY */
1092
1093 void do_testb(int argc, char *argv[])
1094 {
1095         blk64_t block;
1096         blk64_t count = 1;
1097
1098         if (common_block_args_process(argc, argv, &block, &count))
1099                 return;
1100         while (count-- > 0) {
1101                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1102                         printf("Block %llu marked in use\n", block);
1103                 else
1104                         printf("Block %llu not in use\n", block);
1105                 block++;
1106         }
1107 }
1108
1109 #ifndef READ_ONLY
1110 static void modify_u8(char *com, const char *prompt,
1111                       const char *format, __u8 *val)
1112 {
1113         char buf[200];
1114         unsigned long v;
1115         char *tmp;
1116
1117         sprintf(buf, format, *val);
1118         printf("%30s    [%s] ", prompt, buf);
1119         if (!fgets(buf, sizeof(buf), stdin))
1120                 return;
1121         if (buf[strlen (buf) - 1] == '\n')
1122                 buf[strlen (buf) - 1] = '\0';
1123         if (!buf[0])
1124                 return;
1125         v = strtoul(buf, &tmp, 0);
1126         if (*tmp)
1127                 com_err(com, 0, "Bad value - %s", buf);
1128         else
1129                 *val = v;
1130 }
1131
1132 static void modify_u16(char *com, const char *prompt,
1133                        const char *format, __u16 *val)
1134 {
1135         char buf[200];
1136         unsigned long v;
1137         char *tmp;
1138
1139         sprintf(buf, format, *val);
1140         printf("%30s    [%s] ", prompt, buf);
1141         if (!fgets(buf, sizeof(buf), stdin))
1142                 return;
1143         if (buf[strlen (buf) - 1] == '\n')
1144                 buf[strlen (buf) - 1] = '\0';
1145         if (!buf[0])
1146                 return;
1147         v = strtoul(buf, &tmp, 0);
1148         if (*tmp)
1149                 com_err(com, 0, "Bad value - %s", buf);
1150         else
1151                 *val = v;
1152 }
1153
1154 static void modify_u32(char *com, const char *prompt,
1155                        const char *format, __u32 *val)
1156 {
1157         char buf[200];
1158         unsigned long v;
1159         char *tmp;
1160
1161         sprintf(buf, format, *val);
1162         printf("%30s    [%s] ", prompt, buf);
1163         if (!fgets(buf, sizeof(buf), stdin))
1164                 return;
1165         if (buf[strlen (buf) - 1] == '\n')
1166                 buf[strlen (buf) - 1] = '\0';
1167         if (!buf[0])
1168                 return;
1169         v = strtoul(buf, &tmp, 0);
1170         if (*tmp)
1171                 com_err(com, 0, "Bad value - %s", buf);
1172         else
1173                 *val = v;
1174 }
1175
1176
1177 void do_modify_inode(int argc, char *argv[])
1178 {
1179         struct ext2_inode inode;
1180         ext2_ino_t      inode_num;
1181         int             i;
1182         unsigned char   *frag, *fsize;
1183         char            buf[80];
1184         int             os;
1185         const char      *hex_format = "0x%x";
1186         const char      *octal_format = "0%o";
1187         const char      *decimal_format = "%d";
1188         const char      *unsignedlong_format = "%lu";
1189
1190         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1191                 return;
1192
1193         os = current_fs->super->s_creator_os;
1194
1195         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1196                 return;
1197
1198         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1199         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1200         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1201         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1202         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1203         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1204         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1205         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1206         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1207         if (os == EXT2_OS_LINUX)
1208                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1209                            &inode.osd2.linux2.l_i_blocks_hi);
1210         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1211         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1212         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1213 #if 0
1214         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1215 #endif
1216         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1217         if (LINUX_S_ISDIR(inode.i_mode))
1218                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1219         else
1220                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1221
1222         if (os == EXT2_OS_HURD)
1223                 modify_u32(argv[0], "Translator Block",
1224                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1225
1226         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1227         switch (os) {
1228             case EXT2_OS_HURD:
1229                 frag = &inode.osd2.hurd2.h_i_frag;
1230                 fsize = &inode.osd2.hurd2.h_i_fsize;
1231                 break;
1232             default:
1233                 frag = fsize = 0;
1234         }
1235         if (frag)
1236                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1237         if (fsize)
1238                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1239
1240         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1241                 sprintf(buf, "Direct Block #%d", i);
1242                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1243         }
1244         modify_u32(argv[0], "Indirect Block", decimal_format,
1245                     &inode.i_block[EXT2_IND_BLOCK]);
1246         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1247                     &inode.i_block[EXT2_DIND_BLOCK]);
1248         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1249                     &inode.i_block[EXT2_TIND_BLOCK]);
1250         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1251                 return;
1252 }
1253 #endif /* READ_ONLY */
1254
1255 void do_change_working_dir(int argc, char *argv[])
1256 {
1257         ext2_ino_t      inode;
1258         int             retval;
1259
1260         if (common_inode_args_process(argc, argv, &inode, 0))
1261                 return;
1262
1263         retval = ext2fs_check_directory(current_fs, inode);
1264         if (retval) {
1265                 com_err(argv[1], retval, 0);
1266                 return;
1267         }
1268         cwd = inode;
1269         return;
1270 }
1271
1272 void do_print_working_directory(int argc, char *argv[])
1273 {
1274         int     retval;
1275         char    *pathname = NULL;
1276
1277         if (common_args_process(argc, argv, 1, 1,
1278                                 "print_working_directory", "", 0))
1279                 return;
1280
1281         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1282         if (retval) {
1283                 com_err(argv[0], retval,
1284                         "while trying to get pathname of cwd");
1285         }
1286         printf("[pwd]   INODE: %6u  PATH: %s\n",
1287                cwd, pathname ? pathname : "NULL");
1288         if (pathname) {
1289                 free(pathname);
1290                 pathname = NULL;
1291         }
1292         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1293         if (retval) {
1294                 com_err(argv[0], retval,
1295                         "while trying to get pathname of root");
1296         }
1297         printf("[root]  INODE: %6u  PATH: %s\n",
1298                root, pathname ? pathname : "NULL");
1299         if (pathname) {
1300                 free(pathname);
1301                 pathname = NULL;
1302         }
1303         return;
1304 }
1305
1306 #ifndef READ_ONLY
1307 static void make_link(char *sourcename, char *destname)
1308 {
1309         ext2_ino_t      ino;
1310         struct ext2_inode inode;
1311         int             retval;
1312         ext2_ino_t      dir;
1313         char            *dest, *cp, *base_name;
1314
1315         /*
1316          * Get the source inode
1317          */
1318         ino = string_to_inode(sourcename);
1319         if (!ino)
1320                 return;
1321         base_name = strrchr(sourcename, '/');
1322         if (base_name)
1323                 base_name++;
1324         else
1325                 base_name = sourcename;
1326         /*
1327          * Figure out the destination.  First see if it exists and is
1328          * a directory.
1329          */
1330         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1331                 dest = base_name;
1332         else {
1333                 /*
1334                  * OK, it doesn't exist.  See if it is
1335                  * '<dir>/basename' or 'basename'
1336                  */
1337                 cp = strrchr(destname, '/');
1338                 if (cp) {
1339                         *cp = 0;
1340                         dir = string_to_inode(destname);
1341                         if (!dir)
1342                                 return;
1343                         dest = cp+1;
1344                 } else {
1345                         dir = cwd;
1346                         dest = destname;
1347                 }
1348         }
1349
1350         if (debugfs_read_inode(ino, &inode, sourcename))
1351                 return;
1352
1353         retval = ext2fs_link(current_fs, dir, dest, ino,
1354                              ext2_file_type(inode.i_mode));
1355         if (retval)
1356                 com_err("make_link", retval, 0);
1357         return;
1358 }
1359
1360
1361 void do_link(int argc, char *argv[])
1362 {
1363         if (common_args_process(argc, argv, 3, 3, "link",
1364                                 "<source file> <dest_name>", CHECK_FS_RW))
1365                 return;
1366
1367         make_link(argv[1], argv[2]);
1368 }
1369
1370 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1371                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1372                             blk64_t ref_block EXT2FS_ATTR((unused)),
1373                             int ref_offset EXT2FS_ATTR((unused)),
1374                             void *private EXT2FS_ATTR((unused)))
1375 {
1376         blk64_t block;
1377
1378         block = *blocknr;
1379         ext2fs_block_alloc_stats2(fs, block, +1);
1380         return 0;
1381 }
1382
1383 void do_undel(int argc, char *argv[])
1384 {
1385         ext2_ino_t      ino;
1386         struct ext2_inode inode;
1387
1388         if (common_args_process(argc, argv, 2, 3, "undelete",
1389                                 "<inode_num> [dest_name]",
1390                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1391                 return;
1392
1393         ino = string_to_inode(argv[1]);
1394         if (!ino)
1395                 return;
1396
1397         if (debugfs_read_inode(ino, &inode, argv[1]))
1398                 return;
1399
1400         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1401                 com_err(argv[1], 0, "Inode is not marked as deleted");
1402                 return;
1403         }
1404
1405         /*
1406          * XXX this function doesn't handle changing the links count on the
1407          * parent directory when undeleting a directory.
1408          */
1409         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1410         inode.i_dtime = 0;
1411
1412         if (debugfs_write_inode(ino, &inode, argv[0]))
1413                 return;
1414
1415         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1416                               mark_blocks_proc, NULL);
1417
1418         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1419
1420         if (argc > 2)
1421                 make_link(argv[1], argv[2]);
1422 }
1423
1424 static void unlink_file_by_name(char *filename)
1425 {
1426         int             retval;
1427         ext2_ino_t      dir;
1428         char            *base_name;
1429
1430         base_name = strrchr(filename, '/');
1431         if (base_name) {
1432                 *base_name++ = '\0';
1433                 dir = string_to_inode(filename);
1434                 if (!dir)
1435                         return;
1436         } else {
1437                 dir = cwd;
1438                 base_name = filename;
1439         }
1440         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1441         if (retval)
1442                 com_err("unlink_file_by_name", retval, 0);
1443         return;
1444 }
1445
1446 void do_unlink(int argc, char *argv[])
1447 {
1448         if (common_args_process(argc, argv, 2, 2, "link",
1449                                 "<pathname>", CHECK_FS_RW))
1450                 return;
1451
1452         unlink_file_by_name(argv[1]);
1453 }
1454 #endif /* READ_ONLY */
1455
1456 void do_find_free_block(int argc, char *argv[])
1457 {
1458         blk64_t free_blk, goal, first_free = 0;
1459         int             count;
1460         errcode_t       retval;
1461         char            *tmp;
1462
1463         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1464                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1465                 return;
1466         }
1467         if (check_fs_open(argv[0]))
1468                 return;
1469
1470         if (argc > 1) {
1471                 count = strtol(argv[1],&tmp,0);
1472                 if (*tmp) {
1473                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1474                         return;
1475                 }
1476         } else
1477                 count = 1;
1478
1479         if (argc > 2) {
1480                 goal = strtol(argv[2], &tmp, 0);
1481                 if (*tmp) {
1482                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1483                         return;
1484                 }
1485         }
1486         else
1487                 goal = current_fs->super->s_first_data_block;
1488
1489         printf("Free blocks found: ");
1490         free_blk = goal - 1;
1491         while (count-- > 0) {
1492                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1493                                            &free_blk);
1494                 if (first_free) {
1495                         if (first_free == free_blk)
1496                                 break;
1497                 } else
1498                         first_free = free_blk;
1499                 if (retval) {
1500                         com_err("ext2fs_new_block", retval, 0);
1501                         return;
1502                 } else
1503                         printf("%llu ", free_blk);
1504         }
1505         printf("\n");
1506 }
1507
1508 void do_find_free_inode(int argc, char *argv[])
1509 {
1510         ext2_ino_t      free_inode, dir;
1511         int             mode;
1512         int             retval;
1513         char            *tmp;
1514
1515         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1516                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1517                 return;
1518         }
1519         if (check_fs_open(argv[0]))
1520                 return;
1521
1522         if (argc > 1) {
1523                 dir = strtol(argv[1], &tmp, 0);
1524                 if (*tmp) {
1525                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1526                         return;
1527                 }
1528         }
1529         else
1530                 dir = root;
1531         if (argc > 2) {
1532                 mode = strtol(argv[2], &tmp, 0);
1533                 if (*tmp) {
1534                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1535                         return;
1536                 }
1537         } else
1538                 mode = 010755;
1539
1540         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1541         if (retval)
1542                 com_err("ext2fs_new_inode", retval, 0);
1543         else
1544                 printf("Free inode found: %u\n", free_inode);
1545 }
1546
1547 #ifndef READ_ONLY
1548 void do_write(int argc, char *argv[])
1549 {
1550         errcode_t       retval;
1551
1552         if (common_args_process(argc, argv, 3, 3, "write",
1553                                 "<native file> <new file>", CHECK_FS_RW))
1554                 return;
1555
1556         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1557         if (retval)
1558                 com_err(argv[0], retval, 0);
1559 }
1560
1561 void do_mknod(int argc, char *argv[])
1562 {
1563         unsigned long   mode, major, minor;
1564         errcode_t       retval;
1565         int             filetype, nr;
1566         struct stat     st;
1567
1568         if (check_fs_open(argv[0]))
1569                 return;
1570         if (argc < 3 || argv[2][1]) {
1571         usage:
1572                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1573                 return;
1574         }
1575
1576         mode = minor = major = 0;
1577         switch (argv[2][0]) {
1578                 case 'p':
1579                         st.st_mode = S_IFIFO;
1580                         nr = 3;
1581                         break;
1582                 case 'c':
1583                         st.st_mode = S_IFCHR;
1584                         nr = 5;
1585                         break;
1586                 case 'b':
1587                         st.st_mode = S_IFBLK;
1588                         nr = 5;
1589                         break;
1590                 default:
1591                         nr = 0;
1592         }
1593
1594         if (nr == 5) {
1595                 major = strtoul(argv[3], argv+3, 0);
1596                 minor = strtoul(argv[4], argv+4, 0);
1597                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1598                         nr = 0;
1599         }
1600
1601         if (argc != nr)
1602                 goto usage;
1603
1604         st.st_rdev = makedev(major, minor);
1605         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1606         if (retval)
1607                 com_err(argv[0], retval, 0);
1608 }
1609
1610 void do_mkdir(int argc, char *argv[])
1611 {
1612         errcode_t retval;
1613
1614         if (common_args_process(argc, argv, 2, 2, "mkdir",
1615                                 "<filename>", CHECK_FS_RW))
1616                 return;
1617
1618         retval = do_mkdir_internal(current_fs, cwd, argv[1], NULL, root);
1619         if (retval)
1620                 com_err(argv[0], retval, 0);
1621
1622 }
1623
1624 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1625                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1626                                blk64_t ref_block EXT2FS_ATTR((unused)),
1627                                int ref_offset EXT2FS_ATTR((unused)),
1628                                void *private EXT2FS_ATTR((unused)))
1629 {
1630         blk64_t block;
1631
1632         block = *blocknr;
1633         ext2fs_block_alloc_stats2(fs, block, -1);
1634         return 0;
1635 }
1636
1637 static void kill_file_by_inode(ext2_ino_t inode)
1638 {
1639         struct ext2_inode inode_buf;
1640
1641         if (debugfs_read_inode(inode, &inode_buf, 0))
1642                 return;
1643         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1644         if (debugfs_write_inode(inode, &inode_buf, 0))
1645                 return;
1646         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1647                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1648                                       NULL, release_blocks_proc, NULL);
1649         }
1650         printf("\n");
1651         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1652                                   LINUX_S_ISDIR(inode_buf.i_mode));
1653 }
1654
1655
1656 void do_kill_file(int argc, char *argv[])
1657 {
1658         ext2_ino_t inode_num;
1659
1660         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1661                 return;
1662
1663         kill_file_by_inode(inode_num);
1664 }
1665
1666 void do_rm(int argc, char *argv[])
1667 {
1668         int retval;
1669         ext2_ino_t inode_num;
1670         struct ext2_inode inode;
1671
1672         if (common_args_process(argc, argv, 2, 2, "rm",
1673                                 "<filename>", CHECK_FS_RW))
1674                 return;
1675
1676         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1677         if (retval) {
1678                 com_err(argv[0], retval, "while trying to resolve filename");
1679                 return;
1680         }
1681
1682         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1683                 return;
1684
1685         if (LINUX_S_ISDIR(inode.i_mode)) {
1686                 com_err(argv[0], 0, "file is a directory");
1687                 return;
1688         }
1689
1690         --inode.i_links_count;
1691         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1692                 return;
1693
1694         unlink_file_by_name(argv[1]);
1695         if (inode.i_links_count == 0)
1696                 kill_file_by_inode(inode_num);
1697 }
1698
1699 struct rd_struct {
1700         ext2_ino_t      parent;
1701         int             empty;
1702 };
1703
1704 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1705                       int       entry EXT2FS_ATTR((unused)),
1706                       struct ext2_dir_entry *dirent,
1707                       int       offset EXT2FS_ATTR((unused)),
1708                       int       blocksize EXT2FS_ATTR((unused)),
1709                       char      *buf EXT2FS_ATTR((unused)),
1710                       void      *private)
1711 {
1712         struct rd_struct *rds = (struct rd_struct *) private;
1713
1714         if (dirent->inode == 0)
1715                 return 0;
1716         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1717                 return 0;
1718         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1719             (dirent->name[1] == '.')) {
1720                 rds->parent = dirent->inode;
1721                 return 0;
1722         }
1723         rds->empty = 0;
1724         return 0;
1725 }
1726
1727 void do_rmdir(int argc, char *argv[])
1728 {
1729         int retval;
1730         ext2_ino_t inode_num;
1731         struct ext2_inode inode;
1732         struct rd_struct rds;
1733
1734         if (common_args_process(argc, argv, 2, 2, "rmdir",
1735                                 "<filename>", CHECK_FS_RW))
1736                 return;
1737
1738         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1739         if (retval) {
1740                 com_err(argv[0], retval, "while trying to resolve filename");
1741                 return;
1742         }
1743
1744         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1745                 return;
1746
1747         if (!LINUX_S_ISDIR(inode.i_mode)) {
1748                 com_err(argv[0], 0, "file is not a directory");
1749                 return;
1750         }
1751
1752         rds.parent = 0;
1753         rds.empty = 1;
1754
1755         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1756                                     0, rmdir_proc, &rds);
1757         if (retval) {
1758                 com_err(argv[0], retval, "while iterating over directory");
1759                 return;
1760         }
1761         if (rds.empty == 0) {
1762                 com_err(argv[0], 0, "directory not empty");
1763                 return;
1764         }
1765
1766         inode.i_links_count = 0;
1767         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1768                 return;
1769
1770         unlink_file_by_name(argv[1]);
1771         kill_file_by_inode(inode_num);
1772
1773         if (rds.parent) {
1774                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1775                         return;
1776                 if (inode.i_links_count > 1)
1777                         inode.i_links_count--;
1778                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1779                         return;
1780         }
1781 }
1782 #endif /* READ_ONLY */
1783
1784 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1785                             char *argv[] EXT2FS_ATTR((unused)))
1786 {
1787         if (current_fs)
1788                 printf("Open mode: read-%s\n",
1789                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1790         printf("Filesystem in use: %s\n",
1791                current_fs ? current_fs->device_name : "--none--");
1792 }
1793
1794 #ifndef READ_ONLY
1795 void do_expand_dir(int argc, char *argv[])
1796 {
1797         ext2_ino_t inode;
1798         int retval;
1799
1800         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1801                 return;
1802
1803         retval = ext2fs_expand_dir(current_fs, inode);
1804         if (retval)
1805                 com_err("ext2fs_expand_dir", retval, 0);
1806         return;
1807 }
1808
1809 void do_features(int argc, char *argv[])
1810 {
1811         int     i;
1812
1813         if (check_fs_open(argv[0]))
1814                 return;
1815
1816         if ((argc != 1) && check_fs_read_write(argv[0]))
1817                 return;
1818         for (i=1; i < argc; i++) {
1819                 if (e2p_edit_feature(argv[i],
1820                                      &current_fs->super->s_feature_compat, 0))
1821                         com_err(argv[0], 0, "Unknown feature: %s\n",
1822                                 argv[i]);
1823                 else
1824                         ext2fs_mark_super_dirty(current_fs);
1825         }
1826         print_features(current_fs->super, stdout);
1827 }
1828 #endif /* READ_ONLY */
1829
1830 void do_bmap(int argc, char *argv[])
1831 {
1832         ext2_ino_t      ino;
1833         blk64_t         blk, pblk;
1834         int             err;
1835         errcode_t       errcode;
1836
1837         if (common_args_process(argc, argv, 3, 3, argv[0],
1838                                 "<file> logical_blk", 0))
1839                 return;
1840
1841         ino = string_to_inode(argv[1]);
1842         if (!ino)
1843                 return;
1844         err = strtoblk(argv[0], argv[2], "logical block", &blk);
1845         if (err)
1846                 return;
1847
1848         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
1849         if (errcode) {
1850                 com_err(argv[0], errcode,
1851                         "while mapping logical block %llu\n", blk);
1852                 return;
1853         }
1854         printf("%llu\n", pblk);
1855 }
1856
1857 void do_imap(int argc, char *argv[])
1858 {
1859         ext2_ino_t      ino;
1860         unsigned long   group, block, block_nr, offset;
1861
1862         if (common_args_process(argc, argv, 2, 2, argv[0],
1863                                 "<file>", 0))
1864                 return;
1865         ino = string_to_inode(argv[1]);
1866         if (!ino)
1867                 return;
1868
1869         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1870         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1871                 EXT2_INODE_SIZE(current_fs->super);
1872         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1873         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
1874                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1875                         group);
1876                 return;
1877         }
1878         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
1879                 block;
1880         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1881
1882         printf("Inode %d is part of block group %lu\n"
1883                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1884                block_nr, offset);
1885
1886 }
1887
1888 #ifndef READ_ONLY
1889 void do_set_current_time(int argc, char *argv[])
1890 {
1891         time_t now;
1892
1893         if (common_args_process(argc, argv, 2, 2, argv[0],
1894                                 "<time>", 0))
1895                 return;
1896
1897         now = string_to_time(argv[1]);
1898         if (now == ((time_t) -1)) {
1899                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1900                         argv[1]);
1901                 return;
1902
1903         } else {
1904                 printf("Setting current time to %s\n", time_to_string(now));
1905                 current_fs->now = now;
1906         }
1907 }
1908 #endif /* READ_ONLY */
1909
1910 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
1911 {
1912         int compat, bit, ret;
1913         unsigned int feature_mask;
1914
1915         if (name) {
1916                 if (feature_type == E2P_FS_FEATURE)
1917                         ret = e2p_string2feature(name, &compat, &feature_mask);
1918                 else
1919                         ret = e2p_jrnl_string2feature(name, &compat,
1920                                                       &feature_mask);
1921                 if (ret)
1922                         return ret;
1923
1924                 if (!(supp[compat] & feature_mask))
1925                         return 1;
1926         } else {
1927                 for (compat = 0; compat < 3; compat++) {
1928                         for (bit = 0, feature_mask = 1; bit < 32;
1929                              bit++, feature_mask <<= 1) {
1930                                 if (supp[compat] & feature_mask) {
1931                                         if (feature_type == E2P_FS_FEATURE)
1932                                                 fprintf(stdout, " %s",
1933                                                 e2p_feature2string(compat,
1934                                                 feature_mask));
1935                                         else
1936                                                 fprintf(stdout, " %s",
1937                                                 e2p_jrnl_feature2string(compat,
1938                                                 feature_mask));
1939                                 }
1940                         }
1941                 }
1942                 fprintf(stdout, "\n");
1943         }
1944
1945         return 0;
1946 }
1947
1948 void do_supported_features(int argc, char *argv[])
1949 {
1950         int     ret;
1951         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
1952                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
1953                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
1954         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
1955                                  JFS_KNOWN_INCOMPAT_FEATURES,
1956                                  JFS_KNOWN_ROCOMPAT_FEATURES };
1957
1958         if (argc > 1) {
1959                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
1960                 if (ret) {
1961                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
1962                                                 argv[1]);
1963                 }
1964                 if (ret)
1965                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
1966                 else
1967                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
1968         } else {
1969                 fprintf(stdout, "Supported features:");
1970                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
1971                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
1972         }
1973 }
1974
1975 #ifndef READ_ONLY
1976 void do_punch(int argc, char *argv[])
1977 {
1978         ext2_ino_t      ino;
1979         blk64_t         start, end;
1980         int             err;
1981         errcode_t       errcode;
1982
1983         if (common_args_process(argc, argv, 3, 4, argv[0],
1984                                 "<file> start_blk [end_blk]",
1985                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1986                 return;
1987
1988         ino = string_to_inode(argv[1]);
1989         if (!ino)
1990                 return;
1991         err = strtoblk(argv[0], argv[2], "logical block", &start);
1992         if (err)
1993                 return;
1994         if (argc == 4) {
1995                 err = strtoblk(argv[0], argv[3], "logical block", &end);
1996                 if (err)
1997                         return;
1998         } else
1999                 end = ~0;
2000
2001         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2002
2003         if (errcode) {
2004                 com_err(argv[0], errcode,
2005                         "while truncating inode %u from %llu to %llu\n", ino,
2006                         (unsigned long long) start, (unsigned long long) end);
2007                 return;
2008         }
2009 }
2010 #endif /* READ_ONLY */
2011
2012 void do_symlink(int argc, char *argv[])
2013 {
2014         errcode_t       retval;
2015
2016         if (common_args_process(argc, argv, 3, 3, "symlink",
2017                                 "<filename> <target>", CHECK_FS_RW))
2018                 return;
2019
2020         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2021         if (retval)
2022                 com_err(argv[0], retval, 0);
2023
2024 }
2025
2026 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2027 {
2028 #if CONFIG_MMP
2029         struct ext2_super_block *sb;
2030         struct mmp_struct *mmp_s;
2031         time_t t;
2032         errcode_t retval = 0;
2033
2034         if (check_fs_open(argv[0]))
2035                 return;
2036
2037         sb  = current_fs->super;
2038
2039         if (current_fs->mmp_buf == NULL) {
2040                 retval = ext2fs_get_mem(current_fs->blocksize,
2041                                         &current_fs->mmp_buf);
2042                 if (retval) {
2043                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2044                         return;
2045                 }
2046         }
2047
2048         mmp_s = current_fs->mmp_buf;
2049
2050         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2051                                  current_fs->mmp_buf);
2052         if (retval) {
2053                 com_err(argv[0], retval, "reading MMP block.\n");
2054                 return;
2055         }
2056
2057         t = mmp_s->mmp_time;
2058         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2059         fprintf(stdout, "update_interval: %d\n",
2060                 current_fs->super->s_mmp_update_interval);
2061         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2062         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2063         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2064         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2065         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2066         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2067         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2068 #else
2069         fprintf(stdout, "MMP is unsupported, please recompile with "
2070                         "--enable-mmp\n");
2071 #endif
2072 }
2073
2074 static int source_file(const char *cmd_file, int ss_idx)
2075 {
2076         FILE            *f;
2077         char            buf[BUFSIZ];
2078         char            *cp;
2079         int             exit_status = 0;
2080         int             retval;
2081
2082         if (strcmp(cmd_file, "-") == 0)
2083                 f = stdin;
2084         else {
2085                 f = fopen(cmd_file, "r");
2086                 if (!f) {
2087                         perror(cmd_file);
2088                         exit(1);
2089                 }
2090         }
2091         fflush(stdout);
2092         fflush(stderr);
2093         setbuf(stdout, NULL);
2094         setbuf(stderr, NULL);
2095         while (!feof(f)) {
2096                 if (fgets(buf, sizeof(buf), f) == NULL)
2097                         break;
2098                 cp = strchr(buf, '\n');
2099                 if (cp)
2100                         *cp = 0;
2101                 cp = strchr(buf, '\r');
2102                 if (cp)
2103                         *cp = 0;
2104                 printf("debugfs: %s\n", buf);
2105                 retval = ss_execute_line(ss_idx, buf);
2106                 if (retval) {
2107                         ss_perror(ss_idx, retval, buf);
2108                         exit_status++;
2109                 }
2110         }
2111         if (f != stdin)
2112                 fclose(f);
2113         return exit_status;
2114 }
2115
2116 int main(int argc, char **argv)
2117 {
2118         int             retval;
2119         const char      *usage =
2120                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2121                 "[-R request] [-V] ["
2122 #ifndef READ_ONLY
2123                 "[-w] "
2124 #endif
2125                 "[-c] device]";
2126         int             c;
2127         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2128         char            *request = 0;
2129         int             exit_status = 0;
2130         char            *cmd_file = 0;
2131         blk64_t         superblock = 0;
2132         blk64_t         blocksize = 0;
2133         int             catastrophic = 0;
2134         char            *data_filename = 0;
2135 #ifdef READ_ONLY
2136         const char      *opt_string = "nicR:f:b:s:Vd:D";
2137 #else
2138         const char      *opt_string = "niwcR:f:b:s:Vd:D";
2139 #endif
2140
2141         if (debug_prog_name == 0)
2142 #ifdef READ_ONLY
2143                 debug_prog_name = "rdebugfs";
2144 #else
2145                 debug_prog_name = "debugfs";
2146 #endif
2147         add_error_table(&et_ext2_error_table);
2148         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2149                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2150
2151         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2152                 switch (c) {
2153                 case 'R':
2154                         request = optarg;
2155                         break;
2156                 case 'f':
2157                         cmd_file = optarg;
2158                         break;
2159                 case 'd':
2160                         data_filename = optarg;
2161                         break;
2162                 case 'i':
2163                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2164                         break;
2165                 case 'n':
2166                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2167                         break;
2168 #ifndef READ_ONLY
2169                 case 'w':
2170                         open_flags |= EXT2_FLAG_RW;
2171                         break;
2172 #endif
2173                 case 'D':
2174                         open_flags |= EXT2_FLAG_DIRECT_IO;
2175                         break;
2176                 case 'b':
2177                         blocksize = parse_ulong(optarg, argv[0],
2178                                                 "block size", 0);
2179                         break;
2180                 case 's':
2181                         retval = strtoblk(argv[0], optarg,
2182                                           "superblock block number",
2183                                           &superblock);
2184                         if (retval)
2185                                 return 1;
2186                         break;
2187                 case 'c':
2188                         catastrophic = 1;
2189                         break;
2190                 case 'V':
2191                         /* Print version number and exit */
2192                         fprintf(stderr, "\tUsing %s\n",
2193                                 error_message(EXT2_ET_BASE));
2194                         exit(0);
2195                 default:
2196                         com_err(argv[0], 0, usage, debug_prog_name);
2197                         return 1;
2198                 }
2199         }
2200         if (optind < argc)
2201                 open_filesystem(argv[optind], open_flags,
2202                                 superblock, blocksize, catastrophic,
2203                                 data_filename);
2204
2205         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2206                                        &debug_cmds, &retval);
2207         if (retval) {
2208                 ss_perror(sci_idx, retval, "creating invocation");
2209                 exit(1);
2210         }
2211         ss_get_readline(sci_idx);
2212
2213         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2214         if (retval) {
2215                 ss_perror(sci_idx, retval, "adding standard requests");
2216                 exit (1);
2217         }
2218         if (extra_cmds)
2219                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2220         if (retval) {
2221                 ss_perror(sci_idx, retval, "adding extra requests");
2222                 exit (1);
2223         }
2224         if (request) {
2225                 retval = 0;
2226                 retval = ss_execute_line(sci_idx, request);
2227                 if (retval) {
2228                         ss_perror(sci_idx, retval, request);
2229                         exit_status++;
2230                 }
2231         } else if (cmd_file) {
2232                 exit_status = source_file(cmd_file, sci_idx);
2233         } else {
2234                 ss_listen(sci_idx);
2235         }
2236
2237         ss_delete_invocation(sci_idx);
2238
2239         if (current_fs)
2240                 close_filesystem();
2241
2242         remove_error_table(&et_ext2_error_table);
2243         return exit_status;
2244 }