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 <stdio.h>
  12 #include <unistd.h>
  13 #include <stdlib.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #ifdef HAVE_GETOPT_H
  18 #include <getopt.h>
  19 #else
  20 extern int optind;
  21 extern char *optarg;
  22 #endif
  23 #ifdef HAVE_ERRNO_H
  24 #include <errno.h>
  25 #endif
  26 #include <fcntl.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29
  30 #include "et/com_err.h"
  31 #include "ss/ss.h"
  32 #include "debugfs.h"
  33 #include "uuid/uuid.h"
  34 #include "e2p/e2p.h"
  35
  36 #include <ext2fs/ext2_ext_attr.h>
  37
  38 #include "../version.h"
  39 #include "jfs_user.h"
  40
  41 extern ss_request_table debug_cmds;
  42 ss_request_table *extra_cmds;
  43 const char *debug_prog_name;
  44
  45 ext2_filsys     current_fs = NULL;
  46 ext2_ino_t      root, cwd;
  47
  48 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  49                             blk_t blocksize, int catastrophic,
  50                             char *data_filename)
  51 {
  52         int     retval;
  53         io_channel data_io = 0;
  54
  55         if (superblock != 0 && blocksize == 0) {
  56                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  57                 current_fs = NULL;
  58                 return;
  59         }
  60
  61         if (data_filename) {
  62                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  63                         com_err(device, 0,
  64                                 "The -d option is only valid when reading an e2image file");
  65                         current_fs = NULL;
  66                         return;
  67                 }
  68                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  69                 if (retval) {
  70                         com_err(data_filename, 0, "while opening data source");
  71                         current_fs = NULL;
  72                         return;
  73                 }
  74         }
  75
  76         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  77                 com_err(device, 0,
  78                         "opening read-only because of catastrophic mode");
  79                 open_flags &= ~EXT2_FLAG_RW;
  80         }
  81
  82         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  83                              unix_io_manager, &current_fs);
  84         if (retval) {
  85                 com_err(device, retval, "while opening filesystem");
  86                 current_fs = NULL;
  87                 return;
  88         }
  89
  90         if (catastrophic)
  91                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  92         else {
  93                 retval = ext2fs_read_inode_bitmap(current_fs);
  94                 if (retval) {
  95                         com_err(device, retval, "while reading inode bitmap");
  96                         goto errout;
  97                 }
  98                 retval = ext2fs_read_block_bitmap(current_fs);
  99                 if (retval) {
 100                         com_err(device, retval, "while reading block bitmap");
 101                         goto errout;
 102                 }
 103         }
 104
 105         if (data_io) {
 106                 retval = ext2fs_set_data_io(current_fs, data_io);
 107                 if (retval) {
 108                         com_err(device, retval,
 109                                 "while setting data source");
 110                         goto errout;
 111                 }
 112         }
 113
 114         root = cwd = EXT2_ROOT_INO;
 115         return;
 116
 117 errout:
 118         retval = ext2fs_close(current_fs);
 119         if (retval)
 120                 com_err(device, retval, "while trying to close filesystem");
 121         current_fs = NULL;
 122 }
 123
 124 void do_open_filesys(int argc, char **argv)
 125 {
 126         int     c, err;
 127         int     catastrophic = 0;
 128         blk_t   superblock = 0;
 129         blk_t   blocksize = 0;
 130         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
 131         char    *data_filename = 0;
 132
 133         reset_getopt();
 134         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
 135                 switch (c) {
 136                 case 'i':
 137                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 138                         break;
 139                 case 'w':
 140                         open_flags |= EXT2_FLAG_RW;
 141                         break;
 142                 case 'f':
 143                         open_flags |= EXT2_FLAG_FORCE;
 144                         break;
 145                 case 'e':
 146                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 147                         break;
 148                 case 'c':
 149                         catastrophic = 1;
 150                         break;
 151                 case 'd':
 152                         data_filename = optarg;
 153                         break;
 154                 case 'b':
 155                         blocksize = parse_ulong(optarg, argv[0],
 156                                                 "block size", &err);
 157                         if (err)
 158                                 return;
 159                         break;
 160                 case 's':
 161                         superblock = parse_ulong(optarg, argv[0],
 162                                                  "superblock number", &err);
 163                         if (err)
 164                                 return;
 165                         break;
 166                 default:
 167                         goto print_usage;
 168                 }
 169         }
 170         if (optind != argc-1) {
 171                 goto print_usage;
 172         }
 173         if (check_fs_not_open(argv[0]))
 174                 return;
 175         open_filesystem(argv[optind], open_flags,
 176                         superblock, blocksize, catastrophic,
 177                         data_filename);
 178         return;
 179
 180 print_usage:
 181         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 182                 "[-c] [-w] <device>\n", argv[0]);
 183 }
 184
 185 void do_lcd(int argc, char **argv)
 186 {
 187         if (argc != 2) {
 188                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 189                 return;
 190         }
 191
 192         if (chdir(argv[1]) == -1) {
 193                 com_err(argv[0], errno,
 194                         "while trying to change native directory to %s",
 195                         argv[1]);
 196                 return;
 197         }
 198 }
 199
 200 static void close_filesystem(NOARGS)
 201 {
 202         int     retval;
 203
 204         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 205                 retval = ext2fs_write_inode_bitmap(current_fs);
 206                 if (retval)
 207                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 208         }
 209         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 210                 retval = ext2fs_write_block_bitmap(current_fs);
 211                 if (retval)
 212                         com_err("ext2fs_write_block_bitmap", retval, 0);
 213         }
 214         retval = ext2fs_close(current_fs);
 215         if (retval)
 216                 com_err("ext2fs_close", retval, 0);
 217         current_fs = NULL;
 218         return;
 219 }
 220
 221 void do_close_filesys(int argc, char **argv)
 222 {
 223         int     c;
 224
 225         if (check_fs_open(argv[0]))
 226                 return;
 227
 228         reset_getopt();
 229         while ((c = getopt (argc, argv, "a")) != EOF) {
 230                 switch (c) {
 231                 case 'a':
 232                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 233                         break;
 234                 default:
 235                         goto print_usage;
 236                 }
 237         }
 238
 239         if (argc > optind) {
 240         print_usage:
 241                 com_err(0, 0, "Usage: close_filesys [-a]");
 242                 return;
 243         }
 244
 245         close_filesystem();
 246 }
 247
 248 void do_init_filesys(int argc, char **argv)
 249 {
 250         struct ext2_super_block param;
 251         errcode_t       retval;
 252         int             err;
 253
 254         if (common_args_process(argc, argv, 3, 3, "initialize",
 255                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 256                 return;
 257
 258         memset(&param, 0, sizeof(struct ext2_super_block));
 259         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 260                                            "blocks count", &err);
 261         if (err)
 262                 return;
 263         retval = ext2fs_initialize(argv[1], 0, &param,
 264                                    unix_io_manager, &current_fs);
 265         if (retval) {
 266                 com_err(argv[1], retval, "while initializing filesystem");
 267                 current_fs = NULL;
 268                 return;
 269         }
 270         root = cwd = EXT2_ROOT_INO;
 271         return;
 272 }
 273
 274 static void print_features(struct ext2_super_block * s, FILE *f)
 275 {
 276         int     i, j, printed=0;
 277         __u32   *mask = &s->s_feature_compat, m;
 278
 279         fputs("Filesystem features:", f);
 280         for (i=0; i <3; i++,mask++) {
 281                 for (j=0,m=1; j < 32; j++, m<<=1) {
 282                         if (*mask & m) {
 283                                 fprintf(f, " %s", e2p_feature2string(i, m));
 284                                 printed++;
 285                         }
 286                 }
 287         }
 288         if (printed == 0)
 289                 fputs("(none)", f);
 290         fputs("\n", f);
 291 }
 292
 293 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 294                           const char *str, int *first, FILE *f)
 295 {
 296         if (ext2fs_bg_flag_test(fs, group, mask)) {
 297                 if (*first) {
 298                         fputs("           [", f);
 299                         *first = 0;
 300                 } else
 301                         fputs(", ", f);
 302                 fputs(str, f);
 303         }
 304 }
 305
 306 void do_show_super_stats(int argc, char *argv[])
 307 {
 308         dgrp_t  i;
 309         FILE    *out;
 310         struct ext2_group_desc *gdp;
 311         int     c, header_only = 0;
 312         int     numdirs = 0, first, gdt_csum;
 313
 314         reset_getopt();
 315         while ((c = getopt (argc, argv, "h")) != EOF) {
 316                 switch (c) {
 317                 case 'h':
 318                         header_only++;
 319                         break;
 320                 default:
 321                         goto print_usage;
 322                 }
 323         }
 324         if (optind != argc) {
 325                 goto print_usage;
 326         }
 327         if (check_fs_open(argv[0]))
 328                 return;
 329         out = open_pager();
 330
 331         list_super2(current_fs->super, out);
 332         for (i=0; i < current_fs->group_desc_count; i++)
 333                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 334         fprintf(out, "Directories:              %d\n", numdirs);
 335
 336         if (header_only) {
 337                 close_pager(out);
 338                 return;
 339         }
 340
 341         gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 342                                               EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 343         gdp = &current_fs->group_desc[0];
 344         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 345                 fprintf(out, " Group %2d: block bitmap at %u, "
 346                         "inode bitmap at %u, "
 347                         "inode table at %u\n"
 348                         "           %d free %s, "
 349                         "%d free %s, "
 350                         "%d used %s%s",
 351                         i, gdp->bg_block_bitmap,
 352                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 353                         gdp->bg_free_blocks_count,
 354                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 355                         gdp->bg_free_inodes_count,
 356                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 357                         gdp->bg_used_dirs_count,
 358                         gdp->bg_used_dirs_count != 1 ? "directories"
 359                                 : "directory", gdt_csum ? ", " : "\n");
 360                 if (gdt_csum)
 361                         fprintf(out, "%d unused %s\n",
 362                                 gdp->bg_itable_unused,
 363                                 gdp->bg_itable_unused != 1 ? "inodes":"inode");
 364                 first = 1;
 365                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 366                               &first, out);
 367                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 368                               &first, out);
 369                 if (gdt_csum) {
 370                         fprintf(out, "%sChecksum 0x%04x",
 371                                 first ? "           [":", ", gdp->bg_checksum);
 372                         first = 0;
 373                 }
 374                 if (!first)
 375                         fputs("]\n", out);
 376         }
 377         close_pager(out);
 378         return;
 379 print_usage:
 380         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 381 }
 382
 383 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 384                       char **argv EXT2FS_ATTR((unused)))
 385 {
 386         if (check_fs_open(argv[0]))
 387                 return;
 388         if (check_fs_read_write(argv[0]))
 389                 return;
 390
 391         if (argv[1] && !strcmp(argv[1], "-clean"))
 392                 current_fs->super->s_state |= EXT2_VALID_FS;
 393         else
 394                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 395         ext2fs_mark_super_dirty(current_fs);
 396 }
 397
 398 struct list_blocks_struct {
 399         FILE            *f;
 400         e2_blkcnt_t     total;
 401         blk_t           first_block, last_block;
 402         e2_blkcnt_t     first_bcnt, last_bcnt;
 403         e2_blkcnt_t     first;
 404 };
 405
 406 static void finish_range(struct list_blocks_struct *lb)
 407 {
 408         if (lb->first_block == 0)
 409                 return;
 410         if (lb->first)
 411                 lb->first = 0;
 412         else
 413                 fprintf(lb->f, ", ");
 414         if (lb->first_block == lb->last_block)
 415                 fprintf(lb->f, "(%lld):%u",
 416                         (long long)lb->first_bcnt, lb->first_block);
 417         else
 418                 fprintf(lb->f, "(%lld-%lld):%u-%u",
 419                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 420                         lb->first_block, lb->last_block);
 421         lb->first_block = 0;
 422 }
 423
 424 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 425                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 426                             blk_t ref_block EXT2FS_ATTR((unused)),
 427                             int ref_offset EXT2FS_ATTR((unused)),
 428                             void *private)
 429 {
 430         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 431
 432         lb->total++;
 433         if (blockcnt >= 0) {
 434                 /*
 435                  * See if we can add on to the existing range (if it exists)
 436                  */
 437                 if (lb->first_block &&
 438                     (lb->last_block+1 == *blocknr) &&
 439                     (lb->last_bcnt+1 == blockcnt)) {
 440                         lb->last_block = *blocknr;
 441                         lb->last_bcnt = blockcnt;
 442                         return 0;
 443                 }
 444                 /*
 445                  * Start a new range.
 446                  */
 447                 finish_range(lb);
 448                 lb->first_block = lb->last_block = *blocknr;
 449                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 450                 return 0;
 451         }
 452         /*
 453          * Not a normal block.  Always force a new range.
 454          */
 455         finish_range(lb);
 456         if (lb->first)
 457                 lb->first = 0;
 458         else
 459                 fprintf(lb->f, ", ");
 460         if (blockcnt == -1)
 461                 fprintf(lb->f, "(IND):%u", *blocknr);
 462         else if (blockcnt == -2)
 463                 fprintf(lb->f, "(DIND):%u", *blocknr);
 464         else if (blockcnt == -3)
 465                 fprintf(lb->f, "(TIND):%u", *blocknr);
 466         return 0;
 467 }
 468
 469 static void dump_xattr_string(FILE *out, const char *str, int len)
 470 {
 471         int printable = 0;
 472         int i;
 473
 474         /* check: is string "printable enough?" */
 475         for (i = 0; i < len; i++)
 476                 if (isprint(str[i]))
 477                         printable++;
 478
 479         if (printable <= len*7/8)
 480                 printable = 0;
 481
 482         for (i = 0; i < len; i++)
 483                 if (printable)
 484                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 485                                 (unsigned char)str[i]);
 486                 else
 487                         fprintf(out, "%02x ", (unsigned char)str[i]);
 488 }
 489
 490 static void internal_dump_inode_extra(FILE *out,
 491                                       const char *prefix EXT2FS_ATTR((unused)),
 492                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 493                                       struct ext2_inode_large *inode)
 494 {
 495         struct ext2_ext_attr_entry *entry;
 496         __u32 *magic;
 497         char *start, *end;
 498         unsigned int storage_size;
 499
 500         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 501         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 502                         EXT2_GOOD_OLD_INODE_SIZE) {
 503                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 504                                 inode->i_extra_isize);
 505                 return;
 506         }
 507         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 508                         EXT2_GOOD_OLD_INODE_SIZE -
 509                         inode->i_extra_isize;
 510         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 511                         inode->i_extra_isize);
 512         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 513                 fprintf(out, "Extended attributes stored in inode body: \n");
 514                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 515                 start = (char *) magic + sizeof(__u32);
 516                 entry = (struct ext2_ext_attr_entry *) start;
 517                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 518                         struct ext2_ext_attr_entry *next =
 519                                 EXT2_EXT_ATTR_NEXT(entry);
 520                         if (entry->e_value_size > storage_size ||
 521                                         (char *) next >= end) {
 522                                 fprintf(out, "invalid EA entry in inode\n");
 523                                 return;
 524                         }
 525                         fprintf(out, "  ");
 526                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 527                                           entry->e_name_len);
 528                         fprintf(out, " = \"");
 529                         dump_xattr_string(out, start + entry->e_value_offs,
 530                                                 entry->e_value_size);
 531                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 532                         entry = next;
 533                 }
 534         }
 535 }
 536
 537 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 538 {
 539         struct list_blocks_struct lb;
 540
 541         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 542         lb.total = 0;
 543         lb.first_block = 0;
 544         lb.f = f;
 545         lb.first = 1;
 546         ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 547                              list_blocks_proc, (void *)&lb);
 548         finish_range(&lb);
 549         if (lb.total)
 550                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 551         fprintf(f,"\n");
 552 }
 553
 554 static int int_log10(unsigned long long arg)
 555 {
 556         int     l = 0;
 557
 558         arg = arg / 10;
 559         while (arg) {
 560                 l++;
 561                 arg = arg / 10;
 562         }
 563         return l;
 564 }
 565
 566 #define DUMP_LEAF_EXTENTS       0x01
 567 #define DUMP_NODE_EXTENTS       0x02
 568 #define DUMP_EXTENT_TABLE       0x04
 569
 570 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 571                          int flags, int logical_width, int physical_width)
 572 {
 573         ext2_extent_handle_t    handle;
 574         struct ext2fs_extent    extent;
 575         struct ext2_extent_info info;
 576         int                     op = EXT2_EXTENT_ROOT;
 577         unsigned int            printed = 0;
 578         errcode_t               errcode;
 579
 580         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 581         if (errcode)
 582                 return;
 583
 584         if (flags & DUMP_EXTENT_TABLE)
 585                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 586                         (logical_width*2)+3, "Logical",
 587                         (physical_width*2)+3, "Physical");
 588         else
 589                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 590
 591         while (1) {
 592                 errcode = ext2fs_extent_get(handle, op, &extent);
 593
 594                 if (errcode)
 595                         break;
 596
 597                 op = EXT2_EXTENT_NEXT;
 598
 599                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 600                         continue;
 601
 602                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 603                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 604                                 continue;
 605                 } else {
 606                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 607                                 continue;
 608                 }
 609
 610                 errcode = ext2fs_extent_get_info(handle, &info);
 611                 if (errcode)
 612                         continue;
 613
 614                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 615                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 616                                 continue;
 617
 618                         if (flags & DUMP_EXTENT_TABLE) {
 619                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 620                                         "%*llu%*s %6u\n",
 621                                         info.curr_level, info.max_depth,
 622                                         info.curr_entry, info.num_entries,
 623                                         logical_width,
 624                                         extent.e_lblk,
 625                                         logical_width,
 626                                         extent.e_lblk + (extent.e_len - 1),
 627                                         physical_width,
 628                                         extent.e_pblk,
 629                                         physical_width+3, "", extent.e_len);
 630                                 continue;
 631                         }
 632
 633                         fprintf(f, "%s(NODE #%d, %lld-%lld, blk %lld)",
 634                                 printed ? ", " : "",
 635                                 info.curr_entry,
 636                                 extent.e_lblk,
 637                                 extent.e_lblk + (extent.e_len - 1),
 638                                 extent.e_pblk);
 639                         printed = 1;
 640                         continue;
 641                 }
 642
 643                 if (flags & DUMP_EXTENT_TABLE) {
 644                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 645                                 "%*llu - %*llu %6u %s\n",
 646                                 info.curr_level, info.max_depth,
 647                                 info.curr_entry, info.num_entries,
 648                                 logical_width,
 649                                 extent.e_lblk,
 650                                 logical_width,
 651                                 extent.e_lblk + (extent.e_len - 1),
 652                                 physical_width,
 653                                 extent.e_pblk,
 654                                 physical_width,
 655                                 extent.e_pblk + (extent.e_len - 1),
 656                                 extent.e_len,
 657                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 658                                         "Uninit" : "");
 659                         continue;
 660                 }
 661
 662                 if (extent.e_len == 0)
 663                         continue;
 664                 else if (extent.e_len == 1)
 665                         fprintf(f,
 666                                 "%s(%lld%s): %lld",
 667                                 printed ? ", " : "",
 668                                 extent.e_lblk,
 669                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 670                                 " [uninit]" : "",
 671                                 extent.e_pblk);
 672                 else
 673                         fprintf(f,
 674                                 "%s(%lld-%lld%s): %lld-%lld",
 675                                 printed ? ", " : "",
 676                                 extent.e_lblk,
 677                                 extent.e_lblk + (extent.e_len - 1),
 678                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 679                                         " [uninit]" : "",
 680                                 extent.e_pblk,
 681                                 extent.e_pblk + (extent.e_len - 1));
 682                 printed = 1;
 683         }
 684         if (printed)
 685                 fprintf(f, "\n");
 686 }
 687
 688 void internal_dump_inode(FILE *out, const char *prefix,
 689                          ext2_ino_t inode_num, struct ext2_inode *inode,
 690                          int do_dump_blocks)
 691 {
 692         const char *i_type;
 693         char frag, fsize;
 694         int os = current_fs->super->s_creator_os;
 695         struct ext2_inode_large *large_inode;
 696         int is_large_inode = 0;
 697
 698         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 699                 is_large_inode = 1;
 700         large_inode = (struct ext2_inode_large *) inode;
 701
 702         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 703         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 704         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 705         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 706         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 707         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 708         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 709         else i_type = "bad type";
 710         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 711         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 712                 prefix, inode->i_mode & 0777, inode->i_flags);
 713         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 714                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 715                         prefix, inode->i_generation, large_inode->i_version_hi,
 716                         inode->osd1.linux1.l_i_version);
 717         } else {
 718                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 719                         inode->i_generation, inode->osd1.linux1.l_i_version);
 720         }
 721         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 722                 prefix, inode_uid(*inode), inode_gid(*inode));
 723         if (LINUX_S_ISREG(inode->i_mode)) {
 724                 unsigned long long i_size = (inode->i_size |
 725                                     ((unsigned long long)inode->i_size_high << 32));
 726
 727                 fprintf(out, "%llu\n", i_size);
 728         } else
 729                 fprintf(out, "%d\n", inode->i_size);
 730         if (os == EXT2_OS_HURD)
 731                 fprintf(out,
 732                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 733                         prefix,
 734                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 735                         inode->osd1.hurd1.h_i_translator);
 736         else
 737                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 738                         prefix,
 739                         inode->i_file_acl | ((long long)
 740                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 741                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 742         if (os == EXT2_OS_LINUX)
 743                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 744                         prefix, inode->i_links_count,
 745                         (((unsigned long long)
 746                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 747                         inode->i_blocks);
 748         else
 749                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 750                         prefix, inode->i_links_count, inode->i_blocks);
 751         switch (os) {
 752             case EXT2_OS_HURD:
 753                 frag = inode->osd2.hurd2.h_i_frag;
 754                 fsize = inode->osd2.hurd2.h_i_fsize;
 755                 break;
 756             default:
 757                 frag = fsize = 0;
 758         }
 759         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 760                 prefix, inode->i_faddr, frag, fsize);
 761         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 762                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 763                         inode->i_ctime, large_inode->i_ctime_extra,
 764                         time_to_string(inode->i_ctime));
 765                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 766                         inode->i_atime, large_inode->i_atime_extra,
 767                         time_to_string(inode->i_atime));
 768                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 769                         inode->i_mtime, large_inode->i_mtime_extra,
 770                         time_to_string(inode->i_mtime));
 771                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 772                         large_inode->i_crtime, large_inode->i_crtime_extra,
 773                         time_to_string(large_inode->i_crtime));
 774         } else {
 775                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 776                         time_to_string(inode->i_ctime));
 777                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 778                         time_to_string(inode->i_atime));
 779                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 780                         time_to_string(inode->i_mtime));
 781         }
 782         if (inode->i_dtime)
 783           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 784                   time_to_string(inode->i_dtime));
 785         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 786                 internal_dump_inode_extra(out, prefix, inode_num,
 787                                           (struct ext2_inode_large *) inode);
 788         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 789                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 790                         (int) inode->i_size, (char *)inode->i_block);
 791         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 792                 int major, minor;
 793                 const char *devnote;
 794
 795                 if (inode->i_block[0]) {
 796                         major = (inode->i_block[0] >> 8) & 255;
 797                         minor = inode->i_block[0] & 255;
 798                         devnote = "";
 799                 } else {
 800                         major = (inode->i_block[1] & 0xfff00) >> 8;
 801                         minor = ((inode->i_block[1] & 0xff) |
 802                                  ((inode->i_block[1] >> 12) & 0xfff00));
 803                         devnote = "(New-style) ";
 804                 }
 805                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 806                         devnote, major, minor, major, minor);
 807         } else if (do_dump_blocks) {
 808                 if (inode->i_flags & EXT4_EXTENTS_FL)
 809                         dump_extents(out, prefix, inode_num,
 810                                      DUMP_LEAF_EXTENTS, 0, 0);
 811                 else
 812                         dump_blocks(out, prefix, inode_num);
 813         }
 814 }
 815
 816 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 817 {
 818         FILE    *out;
 819
 820         out = open_pager();
 821         internal_dump_inode(out, "", inode_num, inode, 1);
 822         close_pager(out);
 823 }
 824
 825 void do_stat(int argc, char *argv[])
 826 {
 827         ext2_ino_t      inode;
 828         struct ext2_inode * inode_buf;
 829
 830         if (check_fs_open(argv[0]))
 831                 return;
 832
 833         inode_buf = (struct ext2_inode *)
 834                         malloc(EXT2_INODE_SIZE(current_fs->super));
 835         if (!inode_buf) {
 836                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 837                 return;
 838         }
 839
 840         if (common_inode_args_process(argc, argv, &inode, 0)) {
 841                 free(inode_buf);
 842                 return;
 843         }
 844
 845         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 846                                         EXT2_INODE_SIZE(current_fs->super))) {
 847                 free(inode_buf);
 848                 return;
 849         }
 850
 851         dump_inode(inode, inode_buf);
 852         free(inode_buf);
 853         return;
 854 }
 855
 856 void do_dump_extents(int argc, char *argv[])
 857 {
 858         struct ext2_inode inode;
 859         ext2_ino_t      ino;
 860         FILE            *out;
 861         int             c, flags = 0;
 862         int             logical_width;
 863         int             physical_width;
 864
 865         reset_getopt();
 866         while ((c = getopt(argc, argv, "nl")) != EOF) {
 867                 switch (c) {
 868                 case 'n':
 869                         flags |= DUMP_NODE_EXTENTS;
 870                         break;
 871                 case 'l':
 872                         flags |= DUMP_LEAF_EXTENTS;
 873                         break;
 874                 }
 875         }
 876
 877         if (argc != optind+1) {
 878         print_usage:
 879                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 880                 return;
 881         }
 882
 883         if (flags == 0)
 884                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 885         flags |= DUMP_EXTENT_TABLE;
 886
 887         if (check_fs_open(argv[0]))
 888                 return;
 889
 890         ino = string_to_inode(argv[optind]);
 891         if (ino == 0)
 892                 return;
 893
 894         if (debugfs_read_inode(ino, &inode, argv[0]))
 895                 return;
 896
 897         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 898                 fprintf(stderr, "%s: does not uses extent block maps\n",
 899                         argv[optind]);
 900                 return;
 901         }
 902
 903         logical_width = int_log10(((inode.i_size |
 904                                     (__u64) inode.i_size_high << 32) +
 905                                    current_fs->blocksize - 1) /
 906                                   current_fs->blocksize) + 1;
 907         if (logical_width < 5)
 908                 logical_width = 5;
 909         physical_width = int_log10(current_fs->super->s_blocks_count) + 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 void do_chroot(int argc, char *argv[])
 920 {
 921         ext2_ino_t inode;
 922         int retval;
 923
 924         if (common_inode_args_process(argc, argv, &inode, 0))
 925                 return;
 926
 927         retval = ext2fs_check_directory(current_fs, inode);
 928         if (retval)  {
 929                 com_err(argv[1], retval, 0);
 930                 return;
 931         }
 932         root = inode;
 933 }
 934
 935 void do_clri(int argc, char *argv[])
 936 {
 937         ext2_ino_t inode;
 938         struct ext2_inode inode_buf;
 939
 940         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 941                 return;
 942
 943         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 944                 return;
 945         memset(&inode_buf, 0, sizeof(inode_buf));
 946         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 947                 return;
 948 }
 949
 950 void do_freei(int argc, char *argv[])
 951 {
 952         ext2_ino_t inode;
 953
 954         if (common_inode_args_process(argc, argv, &inode,
 955                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 956                 return;
 957
 958         if (!ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
 959                 com_err(argv[0], 0, "Warning: inode already clear");
 960         ext2fs_unmark_inode_bitmap2(current_fs->inode_map,inode);
 961         ext2fs_mark_ib_dirty(current_fs);
 962 }
 963
 964 void do_seti(int argc, char *argv[])
 965 {
 966         ext2_ino_t inode;
 967
 968         if (common_inode_args_process(argc, argv, &inode,
 969                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 970                 return;
 971
 972         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
 973                 com_err(argv[0], 0, "Warning: inode already set");
 974         ext2fs_mark_inode_bitmap2(current_fs->inode_map,inode);
 975         ext2fs_mark_ib_dirty(current_fs);
 976 }
 977
 978 void do_testi(int argc, char *argv[])
 979 {
 980         ext2_ino_t inode;
 981
 982         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 983                 return;
 984
 985         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
 986                 printf("Inode %u is marked in use\n", inode);
 987         else
 988                 printf("Inode %u is not in use\n", inode);
 989 }
 990
 991 void do_freeb(int argc, char *argv[])
 992 {
 993         blk_t block;
 994         blk_t count = 1;
 995
 996         if (common_block_args_process(argc, argv, &block, &count))
 997                 return;
 998         if (check_fs_read_write(argv[0]))
 999                 return;
1000         while (count-- > 0) {
1001                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1002                         com_err(argv[0], 0, "Warning: block %u already clear",
1003                                 block);
1004                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1005                 block++;
1006         }
1007         ext2fs_mark_bb_dirty(current_fs);
1008 }
1009
1010 void do_setb(int argc, char *argv[])
1011 {
1012         blk_t block;
1013         blk_t count = 1;
1014
1015         if (common_block_args_process(argc, argv, &block, &count))
1016                 return;
1017         if (check_fs_read_write(argv[0]))
1018                 return;
1019         while (count-- > 0) {
1020                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1021                         com_err(argv[0], 0, "Warning: block %u already set",
1022                                 block);
1023                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1024                 block++;
1025         }
1026         ext2fs_mark_bb_dirty(current_fs);
1027 }
1028
1029 void do_testb(int argc, char *argv[])
1030 {
1031         blk_t block;
1032         blk_t count = 1;
1033
1034         if (common_block_args_process(argc, argv, &block, &count))
1035                 return;
1036         while (count-- > 0) {
1037                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1038                         printf("Block %u marked in use\n", block);
1039                 else
1040                         printf("Block %u not in use\n", block);
1041                 block++;
1042         }
1043 }
1044
1045 static void modify_u8(char *com, const char *prompt,
1046                       const char *format, __u8 *val)
1047 {
1048         char buf[200];
1049         unsigned long v;
1050         char *tmp;
1051
1052         sprintf(buf, format, *val);
1053         printf("%30s    [%s] ", prompt, buf);
1054         if (!fgets(buf, sizeof(buf), stdin))
1055                 return;
1056         if (buf[strlen (buf) - 1] == '\n')
1057                 buf[strlen (buf) - 1] = '\0';
1058         if (!buf[0])
1059                 return;
1060         v = strtoul(buf, &tmp, 0);
1061         if (*tmp)
1062                 com_err(com, 0, "Bad value - %s", buf);
1063         else
1064                 *val = v;
1065 }
1066
1067 static void modify_u16(char *com, const char *prompt,
1068                        const char *format, __u16 *val)
1069 {
1070         char buf[200];
1071         unsigned long v;
1072         char *tmp;
1073
1074         sprintf(buf, format, *val);
1075         printf("%30s    [%s] ", prompt, buf);
1076         if (!fgets(buf, sizeof(buf), stdin))
1077                 return;
1078         if (buf[strlen (buf) - 1] == '\n')
1079                 buf[strlen (buf) - 1] = '\0';
1080         if (!buf[0])
1081                 return;
1082         v = strtoul(buf, &tmp, 0);
1083         if (*tmp)
1084                 com_err(com, 0, "Bad value - %s", buf);
1085         else
1086                 *val = v;
1087 }
1088
1089 static void modify_u32(char *com, const char *prompt,
1090                        const char *format, __u32 *val)
1091 {
1092         char buf[200];
1093         unsigned long v;
1094         char *tmp;
1095
1096         sprintf(buf, format, *val);
1097         printf("%30s    [%s] ", prompt, buf);
1098         if (!fgets(buf, sizeof(buf), stdin))
1099                 return;
1100         if (buf[strlen (buf) - 1] == '\n')
1101                 buf[strlen (buf) - 1] = '\0';
1102         if (!buf[0])
1103                 return;
1104         v = strtoul(buf, &tmp, 0);
1105         if (*tmp)
1106                 com_err(com, 0, "Bad value - %s", buf);
1107         else
1108                 *val = v;
1109 }
1110
1111
1112 void do_modify_inode(int argc, char *argv[])
1113 {
1114         struct ext2_inode inode;
1115         ext2_ino_t      inode_num;
1116         int             i;
1117         unsigned char   *frag, *fsize;
1118         char            buf[80];
1119         int             os;
1120         const char      *hex_format = "0x%x";
1121         const char      *octal_format = "0%o";
1122         const char      *decimal_format = "%d";
1123         const char      *unsignedlong_format = "%lu";
1124
1125         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1126                 return;
1127
1128         os = current_fs->super->s_creator_os;
1129
1130         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1131                 return;
1132
1133         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1134         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1135         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1136         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1137         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1138         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1139         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1140         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1141         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1142         if (os == EXT2_OS_LINUX)
1143                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1144                            &inode.osd2.linux2.l_i_blocks_hi);
1145         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1146         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1147         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1148 #if 0
1149         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1150 #endif
1151         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1152         if (LINUX_S_ISDIR(inode.i_mode))
1153                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1154         else
1155                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1156
1157         if (os == EXT2_OS_HURD)
1158                 modify_u32(argv[0], "Translator Block",
1159                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1160
1161         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1162         switch (os) {
1163             case EXT2_OS_HURD:
1164                 frag = &inode.osd2.hurd2.h_i_frag;
1165                 fsize = &inode.osd2.hurd2.h_i_fsize;
1166                 break;
1167             default:
1168                 frag = fsize = 0;
1169         }
1170         if (frag)
1171                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1172         if (fsize)
1173                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1174
1175         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1176                 sprintf(buf, "Direct Block #%d", i);
1177                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1178         }
1179         modify_u32(argv[0], "Indirect Block", decimal_format,
1180                     &inode.i_block[EXT2_IND_BLOCK]);
1181         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1182                     &inode.i_block[EXT2_DIND_BLOCK]);
1183         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1184                     &inode.i_block[EXT2_TIND_BLOCK]);
1185         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1186                 return;
1187 }
1188
1189 void do_change_working_dir(int argc, char *argv[])
1190 {
1191         ext2_ino_t      inode;
1192         int             retval;
1193
1194         if (common_inode_args_process(argc, argv, &inode, 0))
1195                 return;
1196
1197         retval = ext2fs_check_directory(current_fs, inode);
1198         if (retval) {
1199                 com_err(argv[1], retval, 0);
1200                 return;
1201         }
1202         cwd = inode;
1203         return;
1204 }
1205
1206 void do_print_working_directory(int argc, char *argv[])
1207 {
1208         int     retval;
1209         char    *pathname = NULL;
1210
1211         if (common_args_process(argc, argv, 1, 1,
1212                                 "print_working_directory", "", 0))
1213                 return;
1214
1215         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1216         if (retval) {
1217                 com_err(argv[0], retval,
1218                         "while trying to get pathname of cwd");
1219         }
1220         printf("[pwd]   INODE: %6u  PATH: %s\n",
1221                cwd, pathname ? pathname : "NULL");
1222         if (pathname) {
1223                 free(pathname);
1224                 pathname = NULL;
1225         }
1226         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1227         if (retval) {
1228                 com_err(argv[0], retval,
1229                         "while trying to get pathname of root");
1230         }
1231         printf("[root]  INODE: %6u  PATH: %s\n",
1232                root, pathname ? pathname : "NULL");
1233         if (pathname) {
1234                 free(pathname);
1235                 pathname = NULL;
1236         }
1237         return;
1238 }
1239
1240 /*
1241  * Given a mode, return the ext2 file type
1242  */
1243 static int ext2_file_type(unsigned int mode)
1244 {
1245         if (LINUX_S_ISREG(mode))
1246                 return EXT2_FT_REG_FILE;
1247
1248         if (LINUX_S_ISDIR(mode))
1249                 return EXT2_FT_DIR;
1250
1251         if (LINUX_S_ISCHR(mode))
1252                 return EXT2_FT_CHRDEV;
1253
1254         if (LINUX_S_ISBLK(mode))
1255                 return EXT2_FT_BLKDEV;
1256
1257         if (LINUX_S_ISLNK(mode))
1258                 return EXT2_FT_SYMLINK;
1259
1260         if (LINUX_S_ISFIFO(mode))
1261                 return EXT2_FT_FIFO;
1262
1263         if (LINUX_S_ISSOCK(mode))
1264                 return EXT2_FT_SOCK;
1265
1266         return 0;
1267 }
1268
1269 static void make_link(char *sourcename, char *destname)
1270 {
1271         ext2_ino_t      ino;
1272         struct ext2_inode inode;
1273         int             retval;
1274         ext2_ino_t      dir;
1275         char            *dest, *cp, *base_name;
1276
1277         /*
1278          * Get the source inode
1279          */
1280         ino = string_to_inode(sourcename);
1281         if (!ino)
1282                 return;
1283         base_name = strrchr(sourcename, '/');
1284         if (base_name)
1285                 base_name++;
1286         else
1287                 base_name = sourcename;
1288         /*
1289          * Figure out the destination.  First see if it exists and is
1290          * a directory.
1291          */
1292         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1293                 dest = base_name;
1294         else {
1295                 /*
1296                  * OK, it doesn't exist.  See if it is
1297                  * '<dir>/basename' or 'basename'
1298                  */
1299                 cp = strrchr(destname, '/');
1300                 if (cp) {
1301                         *cp = 0;
1302                         dir = string_to_inode(destname);
1303                         if (!dir)
1304                                 return;
1305                         dest = cp+1;
1306                 } else {
1307                         dir = cwd;
1308                         dest = destname;
1309                 }
1310         }
1311
1312         if (debugfs_read_inode(ino, &inode, sourcename))
1313                 return;
1314
1315         retval = ext2fs_link(current_fs, dir, dest, ino,
1316                              ext2_file_type(inode.i_mode));
1317         if (retval)
1318                 com_err("make_link", retval, 0);
1319         return;
1320 }
1321
1322
1323 void do_link(int argc, char *argv[])
1324 {
1325         if (common_args_process(argc, argv, 3, 3, "link",
1326                                 "<source file> <dest_name>", CHECK_FS_RW))
1327                 return;
1328
1329         make_link(argv[1], argv[2]);
1330 }
1331
1332 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1333                             int blockcnt EXT2FS_ATTR((unused)),
1334                             void *private EXT2FS_ATTR((unused)))
1335 {
1336         blk_t   block;
1337
1338         block = *blocknr;
1339         ext2fs_block_alloc_stats(fs, block, +1);
1340         return 0;
1341 }
1342
1343 void do_undel(int argc, char *argv[])
1344 {
1345         ext2_ino_t      ino;
1346         struct ext2_inode inode;
1347
1348         if (common_args_process(argc, argv, 2, 3, "undelete",
1349                                 "<inode_num> [dest_name]",
1350                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1351                 return;
1352
1353         ino = string_to_inode(argv[1]);
1354         if (!ino)
1355                 return;
1356
1357         if (debugfs_read_inode(ino, &inode, argv[1]))
1358                 return;
1359
1360         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1361                 com_err(argv[1], 0, "Inode is not marked as deleted");
1362                 return;
1363         }
1364
1365         /*
1366          * XXX this function doesn't handle changing the links count on the
1367          * parent directory when undeleting a directory.
1368          */
1369         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1370         inode.i_dtime = 0;
1371
1372         if (debugfs_write_inode(ino, &inode, argv[0]))
1373                 return;
1374
1375         ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1376                              mark_blocks_proc, NULL);
1377
1378         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1379
1380         if (argc > 2)
1381                 make_link(argv[1], argv[2]);
1382 }
1383
1384 static void unlink_file_by_name(char *filename)
1385 {
1386         int             retval;
1387         ext2_ino_t      dir;
1388         char            *base_name;
1389
1390         base_name = strrchr(filename, '/');
1391         if (base_name) {
1392                 *base_name++ = '\0';
1393                 dir = string_to_inode(filename);
1394                 if (!dir)
1395                         return;
1396         } else {
1397                 dir = cwd;
1398                 base_name = filename;
1399         }
1400         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1401         if (retval)
1402                 com_err("unlink_file_by_name", retval, 0);
1403         return;
1404 }
1405
1406 void do_unlink(int argc, char *argv[])
1407 {
1408         if (common_args_process(argc, argv, 2, 2, "link",
1409                                 "<pathname>", CHECK_FS_RW))
1410                 return;
1411
1412         unlink_file_by_name(argv[1]);
1413 }
1414
1415 void do_find_free_block(int argc, char *argv[])
1416 {
1417         blk_t   free_blk, goal, first_free = 0;
1418         int             count;
1419         errcode_t       retval;
1420         char            *tmp;
1421
1422         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1423                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1424                 return;
1425         }
1426         if (check_fs_open(argv[0]))
1427                 return;
1428
1429         if (argc > 1) {
1430                 count = strtol(argv[1],&tmp,0);
1431                 if (*tmp) {
1432                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1433                         return;
1434                 }
1435         } else
1436                 count = 1;
1437
1438         if (argc > 2) {
1439                 goal = strtol(argv[2], &tmp, 0);
1440                 if (*tmp) {
1441                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1442                         return;
1443                 }
1444         }
1445         else
1446                 goal = current_fs->super->s_first_data_block;
1447
1448         printf("Free blocks found: ");
1449         free_blk = goal - 1;
1450         while (count-- > 0) {
1451                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1452                                           &free_blk);
1453                 if (first_free) {
1454                         if (first_free == free_blk)
1455                                 break;
1456                 } else
1457                         first_free = free_blk;
1458                 if (retval) {
1459                         com_err("ext2fs_new_block", retval, 0);
1460                         return;
1461                 } else
1462                         printf("%u ", free_blk);
1463         }
1464         printf("\n");
1465 }
1466
1467 void do_find_free_inode(int argc, char *argv[])
1468 {
1469         ext2_ino_t      free_inode, dir;
1470         int             mode;
1471         int             retval;
1472         char            *tmp;
1473
1474         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1475                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1476                 return;
1477         }
1478         if (check_fs_open(argv[0]))
1479                 return;
1480
1481         if (argc > 1) {
1482                 dir = strtol(argv[1], &tmp, 0);
1483                 if (*tmp) {
1484                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1485                         return;
1486                 }
1487         }
1488         else
1489                 dir = root;
1490         if (argc > 2) {
1491                 mode = strtol(argv[2], &tmp, 0);
1492                 if (*tmp) {
1493                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1494                         return;
1495                 }
1496         } else
1497                 mode = 010755;
1498
1499         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1500         if (retval)
1501                 com_err("ext2fs_new_inode", retval, 0);
1502         else
1503                 printf("Free inode found: %u\n", free_inode);
1504 }
1505
1506 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1507 {
1508         ext2_file_t     e2_file;
1509         errcode_t       retval;
1510         int             got;
1511         unsigned int    written;
1512         char            buf[8192];
1513         char            *ptr;
1514
1515         retval = ext2fs_file_open(current_fs, newfile,
1516                                   EXT2_FILE_WRITE, &e2_file);
1517         if (retval)
1518                 return retval;
1519
1520         while (1) {
1521                 got = read(fd, buf, sizeof(buf));
1522                 if (got == 0)
1523                         break;
1524                 if (got < 0) {
1525                         retval = errno;
1526                         goto fail;
1527                 }
1528                 ptr = buf;
1529                 while (got > 0) {
1530                         retval = ext2fs_file_write(e2_file, ptr,
1531                                                    got, &written);
1532                         if (retval)
1533                                 goto fail;
1534
1535                         got -= written;
1536                         ptr += written;
1537                 }
1538         }
1539         retval = ext2fs_file_close(e2_file);
1540         return retval;
1541
1542 fail:
1543         (void) ext2fs_file_close(e2_file);
1544         return retval;
1545 }
1546
1547
1548 void do_write(int argc, char *argv[])
1549 {
1550         int             fd;
1551         struct stat     statbuf;
1552         ext2_ino_t      newfile;
1553         errcode_t       retval;
1554         struct ext2_inode inode;
1555
1556         if (common_args_process(argc, argv, 3, 3, "write",
1557                                 "<native file> <new file>", CHECK_FS_RW))
1558                 return;
1559
1560         fd = open(argv[1], O_RDONLY);
1561         if (fd < 0) {
1562                 com_err(argv[1], errno, 0);
1563                 return;
1564         }
1565         if (fstat(fd, &statbuf) < 0) {
1566                 com_err(argv[1], errno, 0);
1567                 close(fd);
1568                 return;
1569         }
1570
1571         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1572         if (retval == 0) {
1573                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1574                 close(fd);
1575                 return;
1576         }
1577
1578         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1579         if (retval) {
1580                 com_err(argv[0], retval, 0);
1581                 close(fd);
1582                 return;
1583         }
1584         printf("Allocated inode: %u\n", newfile);
1585         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1586                              EXT2_FT_REG_FILE);
1587         if (retval == EXT2_ET_DIR_NO_SPACE) {
1588                 retval = ext2fs_expand_dir(current_fs, cwd);
1589                 if (retval) {
1590                         com_err(argv[0], retval, "while expanding directory");
1591                         close(fd);
1592                         return;
1593                 }
1594                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1595                                      EXT2_FT_REG_FILE);
1596         }
1597         if (retval) {
1598                 com_err(argv[2], retval, 0);
1599                 close(fd);
1600                 return;
1601         }
1602         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1603                 com_err(argv[0], 0, "Warning: inode already set");
1604         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1605         memset(&inode, 0, sizeof(inode));
1606         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1607         inode.i_atime = inode.i_ctime = inode.i_mtime =
1608                 current_fs->now ? current_fs->now : time(0);
1609         inode.i_links_count = 1;
1610         inode.i_size = statbuf.st_size;
1611         if (current_fs->super->s_feature_incompat &
1612             EXT3_FEATURE_INCOMPAT_EXTENTS)
1613                 inode.i_flags |= EXT4_EXTENTS_FL;
1614         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1615                 close(fd);
1616                 return;
1617         }
1618         if (LINUX_S_ISREG(inode.i_mode)) {
1619                 retval = copy_file(fd, newfile);
1620                 if (retval)
1621                         com_err("copy_file", retval, 0);
1622         }
1623         close(fd);
1624 }
1625
1626 void do_mknod(int argc, char *argv[])
1627 {
1628         unsigned long   mode, major, minor;
1629         ext2_ino_t      newfile;
1630         errcode_t       retval;
1631         struct ext2_inode inode;
1632         int             filetype, nr;
1633
1634         if (check_fs_open(argv[0]))
1635                 return;
1636         if (argc < 3 || argv[2][1]) {
1637         usage:
1638                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1639                 return;
1640         }
1641         mode = minor = major = 0;
1642         switch (argv[2][0]) {
1643                 case 'p':
1644                         mode = LINUX_S_IFIFO;
1645                         filetype = EXT2_FT_FIFO;
1646                         nr = 3;
1647                         break;
1648                 case 'c':
1649                         mode = LINUX_S_IFCHR;
1650                         filetype = EXT2_FT_CHRDEV;
1651                         nr = 5;
1652                         break;
1653                 case 'b':
1654                         mode = LINUX_S_IFBLK;
1655                         filetype = EXT2_FT_BLKDEV;
1656                         nr = 5;
1657                         break;
1658                 default:
1659                         filetype = 0;
1660                         nr = 0;
1661         }
1662         if (nr == 5) {
1663                 major = strtoul(argv[3], argv+3, 0);
1664                 minor = strtoul(argv[4], argv+4, 0);
1665                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1666                         nr = 0;
1667         }
1668         if (argc != nr)
1669                 goto usage;
1670         if (check_fs_read_write(argv[0]))
1671                 return;
1672         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1673         if (retval) {
1674                 com_err(argv[0], retval, 0);
1675                 return;
1676         }
1677         printf("Allocated inode: %u\n", newfile);
1678         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1679         if (retval == EXT2_ET_DIR_NO_SPACE) {
1680                 retval = ext2fs_expand_dir(current_fs, cwd);
1681                 if (retval) {
1682                         com_err(argv[0], retval, "while expanding directory");
1683                         return;
1684                 }
1685                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1686                                      filetype);
1687         }
1688         if (retval) {
1689                 com_err(argv[1], retval, 0);
1690                 return;
1691         }
1692         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1693                 com_err(argv[0], 0, "Warning: inode already set");
1694         ext2fs_mark_inode_bitmap2(current_fs->inode_map, newfile);
1695         ext2fs_mark_ib_dirty(current_fs);
1696         memset(&inode, 0, sizeof(inode));
1697         inode.i_mode = mode;
1698         inode.i_atime = inode.i_ctime = inode.i_mtime =
1699                 current_fs->now ? current_fs->now : time(0);
1700         if ((major < 256) && (minor < 256)) {
1701                 inode.i_block[0] = major*256+minor;
1702                 inode.i_block[1] = 0;
1703         } else {
1704                 inode.i_block[0] = 0;
1705                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1706         }
1707         inode.i_links_count = 1;
1708         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1709                 return;
1710 }
1711
1712 void do_mkdir(int argc, char *argv[])
1713 {
1714         char    *cp;
1715         ext2_ino_t      parent;
1716         char    *name;
1717         errcode_t retval;
1718
1719         if (common_args_process(argc, argv, 2, 2, "mkdir",
1720                                 "<filename>", CHECK_FS_RW))
1721                 return;
1722
1723         cp = strrchr(argv[1], '/');
1724         if (cp) {
1725                 *cp = 0;
1726                 parent = string_to_inode(argv[1]);
1727                 if (!parent) {
1728                         com_err(argv[1], ENOENT, 0);
1729                         return;
1730                 }
1731                 name = cp+1;
1732         } else {
1733                 parent = cwd;
1734                 name = argv[1];
1735         }
1736
1737 try_again:
1738         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1739         if (retval == EXT2_ET_DIR_NO_SPACE) {
1740                 retval = ext2fs_expand_dir(current_fs, parent);
1741                 if (retval) {
1742                         com_err(argv[0], retval, "while expanding directory");
1743                         return;
1744                 }
1745                 goto try_again;
1746         }
1747         if (retval) {
1748                 com_err("ext2fs_mkdir", retval, 0);
1749                 return;
1750         }
1751
1752 }
1753
1754 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1755                                int blockcnt EXT2FS_ATTR((unused)),
1756                                void *private EXT2FS_ATTR((unused)))
1757 {
1758         blk_t   block;
1759
1760         block = *blocknr;
1761         ext2fs_block_alloc_stats(fs, block, -1);
1762         return 0;
1763 }
1764
1765 static void kill_file_by_inode(ext2_ino_t inode)
1766 {
1767         struct ext2_inode inode_buf;
1768
1769         if (debugfs_read_inode(inode, &inode_buf, 0))
1770                 return;
1771         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1772         if (debugfs_write_inode(inode, &inode_buf, 0))
1773                 return;
1774         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1775                 return;
1776
1777         ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1778                              release_blocks_proc, NULL);
1779         printf("\n");
1780         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1781                                   LINUX_S_ISDIR(inode_buf.i_mode));
1782 }
1783
1784
1785 void do_kill_file(int argc, char *argv[])
1786 {
1787         ext2_ino_t inode_num;
1788
1789         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1790                 return;
1791
1792         kill_file_by_inode(inode_num);
1793 }
1794
1795 void do_rm(int argc, char *argv[])
1796 {
1797         int retval;
1798         ext2_ino_t inode_num;
1799         struct ext2_inode inode;
1800
1801         if (common_args_process(argc, argv, 2, 2, "rm",
1802                                 "<filename>", CHECK_FS_RW))
1803                 return;
1804
1805         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1806         if (retval) {
1807                 com_err(argv[0], retval, "while trying to resolve filename");
1808                 return;
1809         }
1810
1811         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1812                 return;
1813
1814         if (LINUX_S_ISDIR(inode.i_mode)) {
1815                 com_err(argv[0], 0, "file is a directory");
1816                 return;
1817         }
1818
1819         --inode.i_links_count;
1820         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1821                 return;
1822
1823         unlink_file_by_name(argv[1]);
1824         if (inode.i_links_count == 0)
1825                 kill_file_by_inode(inode_num);
1826 }
1827
1828 struct rd_struct {
1829         ext2_ino_t      parent;
1830         int             empty;
1831 };
1832
1833 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1834                       int       entry EXT2FS_ATTR((unused)),
1835                       struct ext2_dir_entry *dirent,
1836                       int       offset EXT2FS_ATTR((unused)),
1837                       int       blocksize EXT2FS_ATTR((unused)),
1838                       char      *buf EXT2FS_ATTR((unused)),
1839                       void      *private)
1840 {
1841         struct rd_struct *rds = (struct rd_struct *) private;
1842
1843         if (dirent->inode == 0)
1844                 return 0;
1845         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1846                 return 0;
1847         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1848             (dirent->name[1] == '.')) {
1849                 rds->parent = dirent->inode;
1850                 return 0;
1851         }
1852         rds->empty = 0;
1853         return 0;
1854 }
1855
1856 void do_rmdir(int argc, char *argv[])
1857 {
1858         int retval;
1859         ext2_ino_t inode_num;
1860         struct ext2_inode inode;
1861         struct rd_struct rds;
1862
1863         if (common_args_process(argc, argv, 2, 2, "rmdir",
1864                                 "<filename>", CHECK_FS_RW))
1865                 return;
1866
1867         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1868         if (retval) {
1869                 com_err(argv[0], retval, "while trying to resolve filename");
1870                 return;
1871         }
1872
1873         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1874                 return;
1875
1876         if (!LINUX_S_ISDIR(inode.i_mode)) {
1877                 com_err(argv[0], 0, "file is not a directory");
1878                 return;
1879         }
1880
1881         rds.parent = 0;
1882         rds.empty = 1;
1883
1884         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1885                                     0, rmdir_proc, &rds);
1886         if (retval) {
1887                 com_err(argv[0], retval, "while iterating over directory");
1888                 return;
1889         }
1890         if (rds.empty == 0) {
1891                 com_err(argv[0], 0, "directory not empty");
1892                 return;
1893         }
1894
1895         inode.i_links_count = 0;
1896         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1897                 return;
1898
1899         unlink_file_by_name(argv[1]);
1900         kill_file_by_inode(inode_num);
1901
1902         if (rds.parent) {
1903                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1904                         return;
1905                 if (inode.i_links_count > 1)
1906                         inode.i_links_count--;
1907                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1908                         return;
1909         }
1910 }
1911
1912 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1913                             char *argv[] EXT2FS_ATTR((unused)))
1914 {
1915         FILE *out = stdout;
1916
1917         if (current_fs)
1918                 fprintf(out, "Open mode: read-%s\n",
1919                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1920         fprintf(out, "Filesystem in use: %s\n",
1921                 current_fs ? current_fs->device_name : "--none--");
1922 }
1923
1924 void do_expand_dir(int argc, char *argv[])
1925 {
1926         ext2_ino_t inode;
1927         int retval;
1928
1929         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1930                 return;
1931
1932         retval = ext2fs_expand_dir(current_fs, inode);
1933         if (retval)
1934                 com_err("ext2fs_expand_dir", retval, 0);
1935         return;
1936 }
1937
1938 void do_features(int argc, char *argv[])
1939 {
1940         int     i;
1941
1942         if (check_fs_open(argv[0]))
1943                 return;
1944
1945         if ((argc != 1) && check_fs_read_write(argv[0]))
1946                 return;
1947         for (i=1; i < argc; i++) {
1948                 if (e2p_edit_feature(argv[i],
1949                                      &current_fs->super->s_feature_compat, 0))
1950                         com_err(argv[0], 0, "Unknown feature: %s\n",
1951                                 argv[i]);
1952                 else
1953                         ext2fs_mark_super_dirty(current_fs);
1954         }
1955         print_features(current_fs->super, stdout);
1956 }
1957
1958 void do_bmap(int argc, char *argv[])
1959 {
1960         ext2_ino_t      ino;
1961         blk_t           blk, pblk;
1962         int             err;
1963         errcode_t       errcode;
1964
1965         if (common_args_process(argc, argv, 3, 3, argv[0],
1966                                 "<file> logical_blk", 0))
1967                 return;
1968
1969         ino = string_to_inode(argv[1]);
1970         if (!ino)
1971                 return;
1972         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1973
1974         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1975         if (errcode) {
1976                 com_err("argv[0]", errcode,
1977                         "while mapping logical block %u\n", blk);
1978                 return;
1979         }
1980         printf("%u\n", pblk);
1981 }
1982
1983 void do_imap(int argc, char *argv[])
1984 {
1985         ext2_ino_t      ino;
1986         unsigned long   group, block, block_nr, offset;
1987
1988         if (common_args_process(argc, argv, 2, 2, argv[0],
1989                                 "<file>", 0))
1990                 return;
1991         ino = string_to_inode(argv[1]);
1992         if (!ino)
1993                 return;
1994
1995         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1996         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1997                 EXT2_INODE_SIZE(current_fs->super);
1998         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1999         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
2000                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2001                         group);
2002                 return;
2003         }
2004         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
2005                 block;
2006         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2007
2008         printf("Inode %d is part of block group %lu\n"
2009                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2010                block_nr, offset);
2011
2012 }
2013
2014 void do_set_current_time(int argc, char *argv[])
2015 {
2016         time_t now;
2017
2018         if (common_args_process(argc, argv, 2, 2, argv[0],
2019                                 "<time>", 0))
2020                 return;
2021
2022         now = string_to_time(argv[1]);
2023         if (now == ((time_t) -1)) {
2024                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2025                         argv[1]);
2026                 return;
2027
2028         } else {
2029                 printf("Setting current time to %s\n", time_to_string(now));
2030                 current_fs->now = now;
2031         }
2032 }
2033
2034 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2035 {
2036         int compat, bit, ret;
2037         unsigned int feature_mask;
2038
2039         if (name) {
2040                 if (feature_type == E2P_FS_FEATURE)
2041                         ret = e2p_string2feature(name, &compat, &feature_mask);
2042                 else
2043                         ret = e2p_jrnl_string2feature(name, &compat,
2044                                                       &feature_mask);
2045                 if (ret)
2046                         return ret;
2047
2048                 if (!(supp[compat] & feature_mask))
2049                         return 1;
2050         } else {
2051                 for (compat = 0; compat < 3; compat++) {
2052                         for (bit = 0, feature_mask = 1; bit < 32;
2053                              bit++, feature_mask <<= 1) {
2054                                 if (supp[compat] & feature_mask) {
2055                                         if (feature_type == E2P_FS_FEATURE)
2056                                                 fprintf(stdout, " %s",
2057                                                 e2p_feature2string(compat,
2058                                                 feature_mask));
2059                                         else
2060                                                 fprintf(stdout, " %s",
2061                                                 e2p_jrnl_feature2string(compat,
2062                                                 feature_mask));
2063                                 }
2064                         }
2065                 }
2066                 fprintf(stdout, "\n");
2067         }
2068
2069         return 0;
2070 }
2071
2072 void do_supported_features(int argc, char *argv[])
2073 {
2074         int     ret;
2075         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2076                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2077                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2078         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2079                                  JFS_KNOWN_INCOMPAT_FEATURES,
2080                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2081
2082         if (argc > 1) {
2083                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2084                 if (ret) {
2085                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2086                                                 argv[1]);
2087                 }
2088                 if (ret)
2089                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2090                 else
2091                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2092         } else {
2093                 fprintf(stdout, "Supported features:");
2094                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2095                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2096         }
2097 }
2098
2099 static int source_file(const char *cmd_file, int sci_idx)
2100 {
2101         FILE            *f;
2102         char            buf[256];
2103         char            *cp;
2104         int             exit_status = 0;
2105         int             retval;
2106
2107         if (strcmp(cmd_file, "-") == 0)
2108                 f = stdin;
2109         else {
2110                 f = fopen(cmd_file, "r");
2111                 if (!f) {
2112                         perror(cmd_file);
2113                         exit(1);
2114                 }
2115         }
2116         fflush(stdout);
2117         fflush(stderr);
2118         setbuf(stdout, NULL);
2119         setbuf(stderr, NULL);
2120         while (!feof(f)) {
2121                 if (fgets(buf, sizeof(buf), f) == NULL)
2122                         break;
2123                 cp = strchr(buf, '\n');
2124                 if (cp)
2125                         *cp = 0;
2126                 cp = strchr(buf, '\r');
2127                 if (cp)
2128                         *cp = 0;
2129                 printf("debugfs: %s\n", buf);
2130                 retval = ss_execute_line(sci_idx, buf);
2131                 if (retval) {
2132                         ss_perror(sci_idx, retval, buf);
2133                         exit_status++;
2134                 }
2135         }
2136         return exit_status;
2137 }
2138
2139 int main(int argc, char **argv)
2140 {
2141         int             retval;
2142         int             sci_idx;
2143         const char      *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
2144         int             c;
2145         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
2146         char            *request = 0;
2147         int             exit_status = 0;
2148         char            *cmd_file = 0;
2149         blk_t           superblock = 0;
2150         blk_t           blocksize = 0;
2151         int             catastrophic = 0;
2152         char            *data_filename = 0;
2153
2154         if (debug_prog_name == 0)
2155                 debug_prog_name = "debugfs";
2156
2157         add_error_table(&et_ext2_error_table);
2158         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2159                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2160
2161         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
2162                 switch (c) {
2163                 case 'R':
2164                         request = optarg;
2165                         break;
2166                 case 'f':
2167                         cmd_file = optarg;
2168                         break;
2169                 case 'd':
2170                         data_filename = optarg;
2171                         break;
2172                 case 'i':
2173                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2174                         break;
2175                 case 'w':
2176                         open_flags |= EXT2_FLAG_RW;
2177                         break;
2178                 case 'b':
2179                         blocksize = parse_ulong(optarg, argv[0],
2180                                                 "block size", 0);
2181                         break;
2182                 case 's':
2183                         superblock = parse_ulong(optarg, argv[0],
2184                                                  "superblock number", 0);
2185                         break;
2186                 case 'c':
2187                         catastrophic = 1;
2188                         break;
2189                 case 'V':
2190                         /* Print version number and exit */
2191                         fprintf(stderr, "\tUsing %s\n",
2192                                 error_message(EXT2_ET_BASE));
2193                         exit(0);
2194                 default:
2195                         com_err(argv[0], 0, usage, debug_prog_name);
2196                         return 1;
2197                 }
2198         }
2199         if (optind < argc)
2200                 open_filesystem(argv[optind], open_flags,
2201                                 superblock, blocksize, catastrophic,
2202                                 data_filename);
2203
2204         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2205                                        &debug_cmds, &retval);
2206         if (retval) {
2207                 ss_perror(sci_idx, retval, "creating invocation");
2208                 exit(1);
2209         }
2210         ss_get_readline(sci_idx);
2211
2212         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2213         if (retval) {
2214                 ss_perror(sci_idx, retval, "adding standard requests");
2215                 exit (1);
2216         }
2217         if (extra_cmds)
2218                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2219         if (retval) {
2220                 ss_perror(sci_idx, retval, "adding extra requests");
2221                 exit (1);
2222         }
2223         if (request) {
2224                 retval = 0;
2225                 retval = ss_execute_line(sci_idx, request);
2226                 if (retval) {
2227                         ss_perror(sci_idx, retval, request);
2228                         exit_status++;
2229                 }
2230         } else if (cmd_file) {
2231                 exit_status = source_file(cmd_file, sci_idx);
2232         } else {
2233                 ss_listen(sci_idx);
2234         }
2235
2236         ss_delete_invocation(sci_idx);
2237
2238         if (current_fs)
2239                 close_filesystem();
2240
2241         remove_error_table(&et_ext2_error_table);
2242         return exit_status;
2243 }