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 #include <sys/types.h>
  29 #include <sys/stat.h>
  30
  31 #include "debugfs.h"
  32 #include "uuid/uuid.h"
  33 #include "e2p/e2p.h"
  34
  35 #include <ext2fs/ext2_ext_attr.h>
  36
  37 #include "../version.h"
  38 #include "jfs_user.h"
  39
  40 ss_request_table *extra_cmds;
  41 const char *debug_prog_name;
  42 int sci_idx;
  43
  44 ext2_filsys     current_fs = NULL;
  45 ext2_ino_t      root, cwd;
  46
  47 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
  48                             blk64_t blocksize, int catastrophic,
  49                             char *data_filename)
  50 {
  51         int     retval;
  52         io_channel data_io = 0;
  53
  54         if (superblock != 0 && blocksize == 0) {
  55                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  56                 current_fs = NULL;
  57                 return;
  58         }
  59
  60         if (data_filename) {
  61                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  62                         com_err(device, 0,
  63                                 "The -d option is only valid when reading an e2image file");
  64                         current_fs = NULL;
  65                         return;
  66                 }
  67                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  68                 if (retval) {
  69                         com_err(data_filename, 0, "while opening data source");
  70                         current_fs = NULL;
  71                         return;
  72                 }
  73         }
  74
  75         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  76                 com_err(device, 0,
  77                         "opening read-only because of catastrophic mode");
  78                 open_flags &= ~EXT2_FLAG_RW;
  79         }
  80         if (catastrophic)
  81                 open_flags |= EXT2_FLAG_SKIP_MMP;
  82
  83         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  84                              unix_io_manager, &current_fs);
  85         if (retval) {
  86                 com_err(device, retval, "while opening filesystem");
  87                 current_fs = NULL;
  88                 return;
  89         }
  90         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
  91
  92         if (catastrophic)
  93                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  94         else {
  95                 retval = ext2fs_read_inode_bitmap(current_fs);
  96                 if (retval) {
  97                         com_err(device, retval, "while reading inode bitmap");
  98                         goto errout;
  99                 }
 100                 retval = ext2fs_read_block_bitmap(current_fs);
 101                 if (retval) {
 102                         com_err(device, retval, "while reading block bitmap");
 103                         goto errout;
 104                 }
 105         }
 106
 107         if (data_io) {
 108                 retval = ext2fs_set_data_io(current_fs, data_io);
 109                 if (retval) {
 110                         com_err(device, retval,
 111                                 "while setting data source");
 112                         goto errout;
 113                 }
 114         }
 115
 116         root = cwd = EXT2_ROOT_INO;
 117         return;
 118
 119 errout:
 120         retval = ext2fs_close(current_fs);
 121         if (retval)
 122                 com_err(device, retval, "while trying to close filesystem");
 123         current_fs = NULL;
 124 }
 125
 126 void do_open_filesys(int argc, char **argv)
 127 {
 128         int     c, err;
 129         int     catastrophic = 0;
 130         blk64_t superblock = 0;
 131         blk64_t blocksize = 0;
 132         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 133         char    *data_filename = 0;
 134
 135         reset_getopt();
 136         while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
 137                 switch (c) {
 138                 case 'i':
 139                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 140                         break;
 141                 case 'w':
 142 #ifdef READ_ONLY
 143                         goto print_usage;
 144 #else
 145                         open_flags |= EXT2_FLAG_RW;
 146 #endif /* READ_ONLY */
 147                         break;
 148                 case 'f':
 149                         open_flags |= EXT2_FLAG_FORCE;
 150                         break;
 151                 case 'e':
 152                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 153                         break;
 154                 case 'c':
 155                         catastrophic = 1;
 156                         break;
 157                 case 'd':
 158                         data_filename = optarg;
 159                         break;
 160                 case 'D':
 161                         open_flags |= EXT2_FLAG_DIRECT_IO;
 162                         break;
 163                 case 'b':
 164                         blocksize = parse_ulong(optarg, argv[0],
 165                                                 "block size", &err);
 166                         if (err)
 167                                 return;
 168                         break;
 169                 case 's':
 170                         superblock = parse_ulong(optarg, argv[0],
 171                                                  "superblock number", &err);
 172                         if (err)
 173                                 return;
 174                         break;
 175                 default:
 176                         goto print_usage;
 177                 }
 178         }
 179         if (optind != argc-1) {
 180                 goto print_usage;
 181         }
 182         if (check_fs_not_open(argv[0]))
 183                 return;
 184         open_filesystem(argv[optind], open_flags,
 185                         superblock, blocksize, catastrophic,
 186                         data_filename);
 187         return;
 188
 189 print_usage:
 190         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] [-c] "
 191 #ifndef READ_ONLY
 192                 "[-w] "
 193 #endif
 194                 "<device>\n", argv[0]);
 195 }
 196
 197 void do_lcd(int argc, char **argv)
 198 {
 199         if (argc != 2) {
 200                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 201                 return;
 202         }
 203
 204         if (chdir(argv[1]) == -1) {
 205                 com_err(argv[0], errno,
 206                         "while trying to change native directory to %s",
 207                         argv[1]);
 208                 return;
 209         }
 210 }
 211
 212 static void close_filesystem(NOARGS)
 213 {
 214         int     retval;
 215
 216         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 217                 retval = ext2fs_write_inode_bitmap(current_fs);
 218                 if (retval)
 219                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 220         }
 221         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 222                 retval = ext2fs_write_block_bitmap(current_fs);
 223                 if (retval)
 224                         com_err("ext2fs_write_block_bitmap", retval, 0);
 225         }
 226         retval = ext2fs_close(current_fs);
 227         if (retval)
 228                 com_err("ext2fs_close", retval, 0);
 229         current_fs = NULL;
 230         return;
 231 }
 232
 233 void do_close_filesys(int argc, char **argv)
 234 {
 235         int     c;
 236
 237         if (check_fs_open(argv[0]))
 238                 return;
 239
 240         reset_getopt();
 241         while ((c = getopt (argc, argv, "a")) != EOF) {
 242                 switch (c) {
 243                 case 'a':
 244                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 245                         break;
 246                 default:
 247                         goto print_usage;
 248                 }
 249         }
 250
 251         if (argc > optind) {
 252         print_usage:
 253                 com_err(0, 0, "Usage: close_filesys [-a]");
 254                 return;
 255         }
 256
 257         close_filesystem();
 258 }
 259
 260 #ifndef READ_ONLY
 261 void do_init_filesys(int argc, char **argv)
 262 {
 263         struct ext2_super_block param;
 264         errcode_t       retval;
 265         int             err;
 266
 267         if (common_args_process(argc, argv, 3, 3, "initialize",
 268                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 269                 return;
 270
 271         memset(&param, 0, sizeof(struct ext2_super_block));
 272         ext2fs_blocks_count_set(&param, parse_ulong(argv[2], argv[0],
 273                                                     "blocks count", &err));
 274         if (err)
 275                 return;
 276         retval = ext2fs_initialize(argv[1], 0, &param,
 277                                    unix_io_manager, &current_fs);
 278         if (retval) {
 279                 com_err(argv[1], retval, "while initializing filesystem");
 280                 current_fs = NULL;
 281                 return;
 282         }
 283         root = cwd = EXT2_ROOT_INO;
 284         return;
 285 }
 286
 287 static void print_features(struct ext2_super_block * s, FILE *f)
 288 {
 289         int     i, j, printed=0;
 290         __u32   *mask = &s->s_feature_compat, m;
 291
 292         fputs("Filesystem features:", f);
 293         for (i=0; i <3; i++,mask++) {
 294                 for (j=0,m=1; j < 32; j++, m<<=1) {
 295                         if (*mask & m) {
 296                                 fprintf(f, " %s", e2p_feature2string(i, m));
 297                                 printed++;
 298                         }
 299                 }
 300         }
 301         if (printed == 0)
 302                 fputs("(none)", f);
 303         fputs("\n", f);
 304 }
 305 #endif /* READ_ONLY */
 306
 307 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 308                           const char *str, int *first, FILE *f)
 309 {
 310         if (ext2fs_bg_flags_test(fs, group, mask)) {
 311                 if (*first) {
 312                         fputs("           [", f);
 313                         *first = 0;
 314                 } else
 315                         fputs(", ", f);
 316                 fputs(str, f);
 317         }
 318 }
 319
 320 void do_show_super_stats(int argc, char *argv[])
 321 {
 322         const char *units ="block";
 323         dgrp_t  i;
 324         FILE    *out;
 325         int     c, header_only = 0;
 326         int     numdirs = 0, first, gdt_csum;
 327
 328         reset_getopt();
 329         while ((c = getopt (argc, argv, "h")) != EOF) {
 330                 switch (c) {
 331                 case 'h':
 332                         header_only++;
 333                         break;
 334                 default:
 335                         goto print_usage;
 336                 }
 337         }
 338         if (optind != argc) {
 339                 goto print_usage;
 340         }
 341         if (check_fs_open(argv[0]))
 342                 return;
 343         out = open_pager();
 344
 345         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 346                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 347                 units = "cluster";
 348
 349         list_super2(current_fs->super, out);
 350         for (i=0; i < current_fs->group_desc_count; i++)
 351                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 352         fprintf(out, "Directories:              %d\n", numdirs);
 353
 354         if (header_only) {
 355                 close_pager(out);
 356                 return;
 357         }
 358
 359         gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 360                                               EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 361         for (i = 0; i < current_fs->group_desc_count; i++) {
 362                 fprintf(out, " Group %2d: block bitmap at %llu, "
 363                         "inode bitmap at %llu, "
 364                         "inode table at %llu\n"
 365                         "           %u free %s%s, "
 366                         "%u free %s, "
 367                         "%u used %s%s",
 368                         i, ext2fs_block_bitmap_loc(current_fs, i),
 369                         ext2fs_inode_bitmap_loc(current_fs, i),
 370                         ext2fs_inode_table_loc(current_fs, i),
 371                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 372                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 373                         "s" : "",
 374                         ext2fs_bg_free_inodes_count(current_fs, i),
 375                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 376                         "inodes" : "inode",
 377                         ext2fs_bg_used_dirs_count(current_fs, i),
 378                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 379                                 : "directory", gdt_csum ? ", " : "\n");
 380                 if (gdt_csum)
 381                         fprintf(out, "%u unused %s\n",
 382                                 ext2fs_bg_itable_unused(current_fs, i),
 383                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 384                                 "inodes" : "inode");
 385                 first = 1;
 386                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 387                               &first, out);
 388                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 389                               &first, out);
 390                 if (gdt_csum) {
 391                         fprintf(out, "%sChecksum 0x%04x",
 392                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 393                         first = 0;
 394                 }
 395                 if (!first)
 396                         fputs("]\n", out);
 397         }
 398         close_pager(out);
 399         return;
 400 print_usage:
 401         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 402 }
 403
 404 #ifndef READ_ONLY
 405 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 406                       char **argv EXT2FS_ATTR((unused)))
 407 {
 408         if (check_fs_open(argv[0]))
 409                 return;
 410         if (check_fs_read_write(argv[0]))
 411                 return;
 412
 413         if (argv[1] && !strcmp(argv[1], "-clean"))
 414                 current_fs->super->s_state |= EXT2_VALID_FS;
 415         else
 416                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 417         ext2fs_mark_super_dirty(current_fs);
 418 }
 419 #endif /* READ_ONLY */
 420
 421 struct list_blocks_struct {
 422         FILE            *f;
 423         e2_blkcnt_t     total;
 424         blk64_t         first_block, last_block;
 425         e2_blkcnt_t     first_bcnt, last_bcnt;
 426         e2_blkcnt_t     first;
 427 };
 428
 429 static void finish_range(struct list_blocks_struct *lb)
 430 {
 431         if (lb->first_block == 0)
 432                 return;
 433         if (lb->first)
 434                 lb->first = 0;
 435         else
 436                 fprintf(lb->f, ", ");
 437         if (lb->first_block == lb->last_block)
 438                 fprintf(lb->f, "(%lld):%llu",
 439                         (long long)lb->first_bcnt, lb->first_block);
 440         else
 441                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 442                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 443                         lb->first_block, lb->last_block);
 444         lb->first_block = 0;
 445 }
 446
 447 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 448                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 449                             blk64_t ref_block EXT2FS_ATTR((unused)),
 450                             int ref_offset EXT2FS_ATTR((unused)),
 451                             void *private)
 452 {
 453         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 454
 455         lb->total++;
 456         if (blockcnt >= 0) {
 457                 /*
 458                  * See if we can add on to the existing range (if it exists)
 459                  */
 460                 if (lb->first_block &&
 461                     (lb->last_block+1 == *blocknr) &&
 462                     (lb->last_bcnt+1 == blockcnt)) {
 463                         lb->last_block = *blocknr;
 464                         lb->last_bcnt = blockcnt;
 465                         return 0;
 466                 }
 467                 /*
 468                  * Start a new range.
 469                  */
 470                 finish_range(lb);
 471                 lb->first_block = lb->last_block = *blocknr;
 472                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 473                 return 0;
 474         }
 475         /*
 476          * Not a normal block.  Always force a new range.
 477          */
 478         finish_range(lb);
 479         if (lb->first)
 480                 lb->first = 0;
 481         else
 482                 fprintf(lb->f, ", ");
 483         if (blockcnt == -1)
 484                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 485         else if (blockcnt == -2)
 486                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 487         else if (blockcnt == -3)
 488                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 489         return 0;
 490 }
 491
 492 static void dump_xattr_string(FILE *out, const char *str, int len)
 493 {
 494         int printable = 0;
 495         int i;
 496
 497         /* check: is string "printable enough?" */
 498         for (i = 0; i < len; i++)
 499                 if (isprint(str[i]))
 500                         printable++;
 501
 502         if (printable <= len*7/8)
 503                 printable = 0;
 504
 505         for (i = 0; i < len; i++)
 506                 if (printable)
 507                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 508                                 (unsigned char)str[i]);
 509                 else
 510                         fprintf(out, "%02x ", (unsigned char)str[i]);
 511 }
 512
 513 static void internal_dump_inode_extra(FILE *out,
 514                                       const char *prefix EXT2FS_ATTR((unused)),
 515                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 516                                       struct ext2_inode_large *inode)
 517 {
 518         struct ext2_ext_attr_entry *entry;
 519         __u32 *magic;
 520         char *start, *end;
 521         unsigned int storage_size;
 522
 523         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 524         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 525                         EXT2_GOOD_OLD_INODE_SIZE) {
 526                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 527                                 inode->i_extra_isize);
 528                 return;
 529         }
 530         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 531                         EXT2_GOOD_OLD_INODE_SIZE -
 532                         inode->i_extra_isize;
 533         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 534                         inode->i_extra_isize);
 535         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 536                 fprintf(out, "Extended attributes stored in inode body: \n");
 537                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 538                 start = (char *) magic + sizeof(__u32);
 539                 entry = (struct ext2_ext_attr_entry *) start;
 540                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 541                         struct ext2_ext_attr_entry *next =
 542                                 EXT2_EXT_ATTR_NEXT(entry);
 543                         if (entry->e_value_size > storage_size ||
 544                                         (char *) next >= end) {
 545                                 fprintf(out, "invalid EA entry in inode\n");
 546                                 return;
 547                         }
 548                         fprintf(out, "  ");
 549                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 550                                           entry->e_name_len);
 551                         fprintf(out, " = \"");
 552                         dump_xattr_string(out, start + entry->e_value_offs,
 553                                                 entry->e_value_size);
 554                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 555                         entry = next;
 556                 }
 557         }
 558 }
 559
 560 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 561 {
 562         struct list_blocks_struct lb;
 563
 564         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 565         lb.total = 0;
 566         lb.first_block = 0;
 567         lb.f = f;
 568         lb.first = 1;
 569         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 570                               list_blocks_proc, (void *)&lb);
 571         finish_range(&lb);
 572         if (lb.total)
 573                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 574         fprintf(f,"\n");
 575 }
 576
 577 static int int_log10(unsigned long long arg)
 578 {
 579         int     l = 0;
 580
 581         arg = arg / 10;
 582         while (arg) {
 583                 l++;
 584                 arg = arg / 10;
 585         }
 586         return l;
 587 }
 588
 589 #define DUMP_LEAF_EXTENTS       0x01
 590 #define DUMP_NODE_EXTENTS       0x02
 591 #define DUMP_EXTENT_TABLE       0x04
 592
 593 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 594                          int flags, int logical_width, int physical_width)
 595 {
 596         ext2_extent_handle_t    handle;
 597         struct ext2fs_extent    extent;
 598         struct ext2_extent_info info;
 599         int                     op = EXT2_EXTENT_ROOT;
 600         unsigned int            printed = 0;
 601         errcode_t               errcode;
 602
 603         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 604         if (errcode)
 605                 return;
 606
 607         if (flags & DUMP_EXTENT_TABLE)
 608                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 609                         (logical_width*2)+3, "Logical",
 610                         (physical_width*2)+3, "Physical");
 611         else
 612                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 613
 614         while (1) {
 615                 errcode = ext2fs_extent_get(handle, op, &extent);
 616
 617                 if (errcode)
 618                         break;
 619
 620                 op = EXT2_EXTENT_NEXT;
 621
 622                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 623                         continue;
 624
 625                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 626                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 627                                 continue;
 628                 } else {
 629                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 630                                 continue;
 631                 }
 632
 633                 errcode = ext2fs_extent_get_info(handle, &info);
 634                 if (errcode)
 635                         continue;
 636
 637                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 638                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 639                                 continue;
 640
 641                         if (flags & DUMP_EXTENT_TABLE) {
 642                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 643                                         "%*llu%*s %6u\n",
 644                                         info.curr_level, info.max_depth,
 645                                         info.curr_entry, info.num_entries,
 646                                         logical_width,
 647                                         extent.e_lblk,
 648                                         logical_width,
 649                                         extent.e_lblk + (extent.e_len - 1),
 650                                         physical_width,
 651                                         extent.e_pblk,
 652                                         physical_width+3, "", extent.e_len);
 653                                 continue;
 654                         }
 655
 656                         fprintf(f, "%s(ETB%d):%lld",
 657                                 printed ? ", " : "", info.curr_level,
 658                                 extent.e_pblk);
 659                         printed = 1;
 660                         continue;
 661                 }
 662
 663                 if (flags & DUMP_EXTENT_TABLE) {
 664                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 665                                 "%*llu - %*llu %6u %s\n",
 666                                 info.curr_level, info.max_depth,
 667                                 info.curr_entry, info.num_entries,
 668                                 logical_width,
 669                                 extent.e_lblk,
 670                                 logical_width,
 671                                 extent.e_lblk + (extent.e_len - 1),
 672                                 physical_width,
 673                                 extent.e_pblk,
 674                                 physical_width,
 675                                 extent.e_pblk + (extent.e_len - 1),
 676                                 extent.e_len,
 677                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 678                                         "Uninit" : "");
 679                         continue;
 680                 }
 681
 682                 if (extent.e_len == 0)
 683                         continue;
 684                 else if (extent.e_len == 1)
 685                         fprintf(f,
 686                                 "%s(%lld%s):%lld",
 687                                 printed ? ", " : "",
 688                                 extent.e_lblk,
 689                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 690                                 "[u]" : "",
 691                                 extent.e_pblk);
 692                 else
 693                         fprintf(f,
 694                                 "%s(%lld-%lld%s):%lld-%lld",
 695                                 printed ? ", " : "",
 696                                 extent.e_lblk,
 697                                 extent.e_lblk + (extent.e_len - 1),
 698                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 699                                         "[u]" : "",
 700                                 extent.e_pblk,
 701                                 extent.e_pblk + (extent.e_len - 1));
 702                 printed = 1;
 703         }
 704         if (printed)
 705                 fprintf(f, "\n");
 706 }
 707
 708 void internal_dump_inode(FILE *out, const char *prefix,
 709                          ext2_ino_t inode_num, struct ext2_inode *inode,
 710                          int do_dump_blocks)
 711 {
 712         const char *i_type;
 713         char frag, fsize;
 714         int os = current_fs->super->s_creator_os;
 715         struct ext2_inode_large *large_inode;
 716         int is_large_inode = 0;
 717
 718         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 719                 is_large_inode = 1;
 720         large_inode = (struct ext2_inode_large *) inode;
 721
 722         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 723         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 724         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 725         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 726         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 727         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 728         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 729         else i_type = "bad type";
 730         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 731         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 732                 prefix, inode->i_mode & 0777, inode->i_flags);
 733         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 734                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 735                         prefix, inode->i_generation, large_inode->i_version_hi,
 736                         inode->osd1.linux1.l_i_version);
 737         } else {
 738                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 739                         inode->i_generation, inode->osd1.linux1.l_i_version);
 740         }
 741         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 742                 prefix, inode_uid(*inode), inode_gid(*inode));
 743         if (LINUX_S_ISREG(inode->i_mode))
 744                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 745         else
 746                 fprintf(out, "%d\n", inode->i_size);
 747         if (os == EXT2_OS_HURD)
 748                 fprintf(out,
 749                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 750                         prefix,
 751                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 752                         inode->osd1.hurd1.h_i_translator);
 753         else
 754                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 755                         prefix,
 756                         inode->i_file_acl | ((long long)
 757                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 758                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 759         if (os == EXT2_OS_LINUX)
 760                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 761                         prefix, inode->i_links_count,
 762                         (((unsigned long long)
 763                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 764                         inode->i_blocks);
 765         else
 766                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 767                         prefix, inode->i_links_count, inode->i_blocks);
 768         switch (os) {
 769             case EXT2_OS_HURD:
 770                 frag = inode->osd2.hurd2.h_i_frag;
 771                 fsize = inode->osd2.hurd2.h_i_fsize;
 772                 break;
 773             default:
 774                 frag = fsize = 0;
 775         }
 776         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 777                 prefix, inode->i_faddr, frag, fsize);
 778         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 779                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 780                         inode->i_ctime, large_inode->i_ctime_extra,
 781                         time_to_string(inode->i_ctime));
 782                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 783                         inode->i_atime, large_inode->i_atime_extra,
 784                         time_to_string(inode->i_atime));
 785                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 786                         inode->i_mtime, large_inode->i_mtime_extra,
 787                         time_to_string(inode->i_mtime));
 788                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 789                         large_inode->i_crtime, large_inode->i_crtime_extra,
 790                         time_to_string(large_inode->i_crtime));
 791         } else {
 792                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 793                         time_to_string(inode->i_ctime));
 794                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 795                         time_to_string(inode->i_atime));
 796                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 797                         time_to_string(inode->i_mtime));
 798         }
 799         if (inode->i_dtime)
 800           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 801                   time_to_string(inode->i_dtime));
 802         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 803                 internal_dump_inode_extra(out, prefix, inode_num,
 804                                           (struct ext2_inode_large *) inode);
 805         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 806                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 807                         (int) inode->i_size, (char *)inode->i_block);
 808         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 809                 int major, minor;
 810                 const char *devnote;
 811
 812                 if (inode->i_block[0]) {
 813                         major = (inode->i_block[0] >> 8) & 255;
 814                         minor = inode->i_block[0] & 255;
 815                         devnote = "";
 816                 } else {
 817                         major = (inode->i_block[1] & 0xfff00) >> 8;
 818                         minor = ((inode->i_block[1] & 0xff) |
 819                                  ((inode->i_block[1] >> 12) & 0xfff00));
 820                         devnote = "(New-style) ";
 821                 }
 822                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 823                         devnote, major, minor, major, minor);
 824         } else if (do_dump_blocks) {
 825                 if (inode->i_flags & EXT4_EXTENTS_FL)
 826                         dump_extents(out, prefix, inode_num,
 827                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 828                 else
 829                         dump_blocks(out, prefix, inode_num);
 830         }
 831 }
 832
 833 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 834 {
 835         FILE    *out;
 836
 837         out = open_pager();
 838         internal_dump_inode(out, "", inode_num, inode, 1);
 839         close_pager(out);
 840 }
 841
 842 void do_stat(int argc, char *argv[])
 843 {
 844         ext2_ino_t      inode;
 845         struct ext2_inode * inode_buf;
 846
 847         if (check_fs_open(argv[0]))
 848                 return;
 849
 850         inode_buf = (struct ext2_inode *)
 851                         malloc(EXT2_INODE_SIZE(current_fs->super));
 852         if (!inode_buf) {
 853                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 854                 return;
 855         }
 856
 857         if (common_inode_args_process(argc, argv, &inode, 0)) {
 858                 free(inode_buf);
 859                 return;
 860         }
 861
 862         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 863                                         EXT2_INODE_SIZE(current_fs->super))) {
 864                 free(inode_buf);
 865                 return;
 866         }
 867
 868         dump_inode(inode, inode_buf);
 869         free(inode_buf);
 870         return;
 871 }
 872
 873 void do_dump_extents(int argc, char **argv)
 874 {
 875         struct ext2_inode inode;
 876         ext2_ino_t      ino;
 877         FILE            *out;
 878         int             c, flags = 0;
 879         int             logical_width;
 880         int             physical_width;
 881
 882         reset_getopt();
 883         while ((c = getopt(argc, argv, "nl")) != EOF) {
 884                 switch (c) {
 885                 case 'n':
 886                         flags |= DUMP_NODE_EXTENTS;
 887                         break;
 888                 case 'l':
 889                         flags |= DUMP_LEAF_EXTENTS;
 890                         break;
 891                 }
 892         }
 893
 894         if (argc != optind + 1) {
 895                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 896                 return;
 897         }
 898
 899         if (flags == 0)
 900                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 901         flags |= DUMP_EXTENT_TABLE;
 902
 903         if (check_fs_open(argv[0]))
 904                 return;
 905
 906         ino = string_to_inode(argv[optind]);
 907         if (ino == 0)
 908                 return;
 909
 910         if (debugfs_read_inode(ino, &inode, argv[0]))
 911                 return;
 912
 913         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 914                 fprintf(stderr, "%s: does not uses extent block maps\n",
 915                         argv[optind]);
 916                 return;
 917         }
 918
 919         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 920                                   current_fs->blocksize) + 1;
 921         if (logical_width < 5)
 922                 logical_width = 5;
 923         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 924         if (physical_width < 5)
 925                 physical_width = 5;
 926
 927         out = open_pager();
 928         dump_extents(out, "", ino, flags, logical_width, physical_width);
 929         close_pager(out);
 930         return;
 931 }
 932
 933 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 934                              blk64_t *blocknr,
 935                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 936                              blk64_t ref_block EXT2FS_ATTR((unused)),
 937                              int ref_offset EXT2FS_ATTR((unused)),
 938                              void *private EXT2FS_ATTR((unused)))
 939 {
 940         printf("%llu ", *blocknr);
 941         return 0;
 942 }
 943
 944 void do_blocks(int argc, char *argv[])
 945 {
 946         ext2_ino_t      inode;
 947
 948         if (check_fs_open(argv[0]))
 949                 return;
 950
 951         if (common_inode_args_process(argc, argv, &inode, 0)) {
 952                 return;
 953         }
 954
 955         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 956                               print_blocks_proc, NULL);
 957         fputc('\n', stdout);
 958         return;
 959 }
 960
 961 void do_chroot(int argc, char *argv[])
 962 {
 963         ext2_ino_t inode;
 964         int retval;
 965
 966         if (common_inode_args_process(argc, argv, &inode, 0))
 967                 return;
 968
 969         retval = ext2fs_check_directory(current_fs, inode);
 970         if (retval)  {
 971                 com_err(argv[1], retval, 0);
 972                 return;
 973         }
 974         root = inode;
 975 }
 976
 977 #ifndef READ_ONLY
 978 void do_clri(int argc, char *argv[])
 979 {
 980         ext2_ino_t inode;
 981         struct ext2_inode inode_buf;
 982
 983         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 984                 return;
 985
 986         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 987                 return;
 988         memset(&inode_buf, 0, sizeof(inode_buf));
 989         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 990                 return;
 991 }
 992
 993 void do_freei(int argc, char *argv[])
 994 {
 995         unsigned int    len = 1;
 996         int             err = 0;
 997         ext2_ino_t      inode;
 998
 999         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1000                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1001                 return;
1002         if (check_fs_read_write(argv[0]))
1003                 return;
1004
1005         inode = string_to_inode(argv[1]);
1006         if (!inode)
1007                 return;
1008
1009         if (argc == 3) {
1010                 len = parse_ulong(argv[2], argv[0], "length", &err);
1011                 if (err)
1012                         return;
1013         }
1014
1015         if (len == 1 &&
1016             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1017                 com_err(argv[0], 0, "Warning: inode already clear");
1018         while (len-- > 0)
1019                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode);
1020         ext2fs_mark_ib_dirty(current_fs);
1021 }
1022
1023 void do_seti(int argc, char *argv[])
1024 {
1025         unsigned int    len = 1;
1026         int             err = 0;
1027         ext2_ino_t      inode;
1028
1029         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1030                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1031                 return;
1032         if (check_fs_read_write(argv[0]))
1033                 return;
1034
1035         inode = string_to_inode(argv[1]);
1036         if (!inode)
1037                 return;
1038
1039         if (argc == 3) {
1040                 len = parse_ulong(argv[2], argv[0], "length", &err);
1041                 if (err)
1042                         return;
1043         }
1044
1045         if ((len == 1) &&
1046             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1047                 com_err(argv[0], 0, "Warning: inode already set");
1048         while (len-- > 0)
1049                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1050         ext2fs_mark_ib_dirty(current_fs);
1051 }
1052 #endif /* READ_ONLY */
1053
1054 void do_testi(int argc, char *argv[])
1055 {
1056         ext2_ino_t inode;
1057
1058         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1059                 return;
1060
1061         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1062                 printf("Inode %u is marked in use\n", inode);
1063         else
1064                 printf("Inode %u is not in use\n", inode);
1065 }
1066
1067 #ifndef READ_ONLY
1068 void do_freeb(int argc, char *argv[])
1069 {
1070         blk64_t block;
1071         blk64_t count = 1;
1072
1073         if (common_block_args_process(argc, argv, &block, &count))
1074                 return;
1075         if (check_fs_read_write(argv[0]))
1076                 return;
1077         while (count-- > 0) {
1078                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1079                         com_err(argv[0], 0, "Warning: block %llu already clear",
1080                                 block);
1081                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1082                 block++;
1083         }
1084         ext2fs_mark_bb_dirty(current_fs);
1085 }
1086
1087 void do_setb(int argc, char *argv[])
1088 {
1089         blk64_t block;
1090         blk64_t count = 1;
1091
1092         if (common_block_args_process(argc, argv, &block, &count))
1093                 return;
1094         if (check_fs_read_write(argv[0]))
1095                 return;
1096         while (count-- > 0) {
1097                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1098                         com_err(argv[0], 0, "Warning: block %llu already set",
1099                                 block);
1100                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1101                 block++;
1102         }
1103         ext2fs_mark_bb_dirty(current_fs);
1104 }
1105 #endif /* READ_ONLY */
1106
1107 void do_testb(int argc, char *argv[])
1108 {
1109         blk64_t block;
1110         blk64_t count = 1;
1111
1112         if (common_block_args_process(argc, argv, &block, &count))
1113                 return;
1114         while (count-- > 0) {
1115                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1116                         printf("Block %llu marked in use\n", block);
1117                 else
1118                         printf("Block %llu not in use\n", block);
1119                 block++;
1120         }
1121 }
1122
1123 #ifndef READ_ONLY
1124 static void modify_u8(char *com, const char *prompt,
1125                       const char *format, __u8 *val)
1126 {
1127         char buf[200];
1128         unsigned long v;
1129         char *tmp;
1130
1131         sprintf(buf, format, *val);
1132         printf("%30s    [%s] ", prompt, buf);
1133         if (!fgets(buf, sizeof(buf), stdin))
1134                 return;
1135         if (buf[strlen (buf) - 1] == '\n')
1136                 buf[strlen (buf) - 1] = '\0';
1137         if (!buf[0])
1138                 return;
1139         v = strtoul(buf, &tmp, 0);
1140         if (*tmp)
1141                 com_err(com, 0, "Bad value - %s", buf);
1142         else
1143                 *val = v;
1144 }
1145
1146 static void modify_u16(char *com, const char *prompt,
1147                        const char *format, __u16 *val)
1148 {
1149         char buf[200];
1150         unsigned long v;
1151         char *tmp;
1152
1153         sprintf(buf, format, *val);
1154         printf("%30s    [%s] ", prompt, buf);
1155         if (!fgets(buf, sizeof(buf), stdin))
1156                 return;
1157         if (buf[strlen (buf) - 1] == '\n')
1158                 buf[strlen (buf) - 1] = '\0';
1159         if (!buf[0])
1160                 return;
1161         v = strtoul(buf, &tmp, 0);
1162         if (*tmp)
1163                 com_err(com, 0, "Bad value - %s", buf);
1164         else
1165                 *val = v;
1166 }
1167
1168 static void modify_u32(char *com, const char *prompt,
1169                        const char *format, __u32 *val)
1170 {
1171         char buf[200];
1172         unsigned long v;
1173         char *tmp;
1174
1175         sprintf(buf, format, *val);
1176         printf("%30s    [%s] ", prompt, buf);
1177         if (!fgets(buf, sizeof(buf), stdin))
1178                 return;
1179         if (buf[strlen (buf) - 1] == '\n')
1180                 buf[strlen (buf) - 1] = '\0';
1181         if (!buf[0])
1182                 return;
1183         v = strtoul(buf, &tmp, 0);
1184         if (*tmp)
1185                 com_err(com, 0, "Bad value - %s", buf);
1186         else
1187                 *val = v;
1188 }
1189
1190
1191 void do_modify_inode(int argc, char *argv[])
1192 {
1193         struct ext2_inode inode;
1194         ext2_ino_t      inode_num;
1195         int             i;
1196         unsigned char   *frag, *fsize;
1197         char            buf[80];
1198         int             os;
1199         const char      *hex_format = "0x%x";
1200         const char      *octal_format = "0%o";
1201         const char      *decimal_format = "%d";
1202         const char      *unsignedlong_format = "%lu";
1203
1204         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1205                 return;
1206
1207         os = current_fs->super->s_creator_os;
1208
1209         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1210                 return;
1211
1212         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1213         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1214         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1215         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1216         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1217         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1218         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1219         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1220         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1221         if (os == EXT2_OS_LINUX)
1222                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1223                            &inode.osd2.linux2.l_i_blocks_hi);
1224         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1225         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1226         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1227 #if 0
1228         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1229 #endif
1230         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1231         if (LINUX_S_ISDIR(inode.i_mode))
1232                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1233         else
1234                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1235
1236         if (os == EXT2_OS_HURD)
1237                 modify_u32(argv[0], "Translator Block",
1238                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1239
1240         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1241         switch (os) {
1242             case EXT2_OS_HURD:
1243                 frag = &inode.osd2.hurd2.h_i_frag;
1244                 fsize = &inode.osd2.hurd2.h_i_fsize;
1245                 break;
1246             default:
1247                 frag = fsize = 0;
1248         }
1249         if (frag)
1250                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1251         if (fsize)
1252                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1253
1254         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1255                 sprintf(buf, "Direct Block #%d", i);
1256                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1257         }
1258         modify_u32(argv[0], "Indirect Block", decimal_format,
1259                     &inode.i_block[EXT2_IND_BLOCK]);
1260         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1261                     &inode.i_block[EXT2_DIND_BLOCK]);
1262         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1263                     &inode.i_block[EXT2_TIND_BLOCK]);
1264         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1265                 return;
1266 }
1267 #endif /* READ_ONLY */
1268
1269 void do_change_working_dir(int argc, char *argv[])
1270 {
1271         ext2_ino_t      inode;
1272         int             retval;
1273
1274         if (common_inode_args_process(argc, argv, &inode, 0))
1275                 return;
1276
1277         retval = ext2fs_check_directory(current_fs, inode);
1278         if (retval) {
1279                 com_err(argv[1], retval, 0);
1280                 return;
1281         }
1282         cwd = inode;
1283         return;
1284 }
1285
1286 void do_print_working_directory(int argc, char *argv[])
1287 {
1288         int     retval;
1289         char    *pathname = NULL;
1290
1291         if (common_args_process(argc, argv, 1, 1,
1292                                 "print_working_directory", "", 0))
1293                 return;
1294
1295         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1296         if (retval) {
1297                 com_err(argv[0], retval,
1298                         "while trying to get pathname of cwd");
1299         }
1300         printf("[pwd]   INODE: %6u  PATH: %s\n",
1301                cwd, pathname ? pathname : "NULL");
1302         if (pathname) {
1303                 free(pathname);
1304                 pathname = NULL;
1305         }
1306         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1307         if (retval) {
1308                 com_err(argv[0], retval,
1309                         "while trying to get pathname of root");
1310         }
1311         printf("[root]  INODE: %6u  PATH: %s\n",
1312                root, pathname ? pathname : "NULL");
1313         if (pathname) {
1314                 free(pathname);
1315                 pathname = NULL;
1316         }
1317         return;
1318 }
1319
1320 #ifndef READ_ONLY
1321 static void make_link(char *sourcename, char *destname)
1322 {
1323         ext2_ino_t      ino;
1324         struct ext2_inode inode;
1325         int             retval;
1326         ext2_ino_t      dir;
1327         char            *dest, *cp, *base_name;
1328
1329         /*
1330          * Get the source inode
1331          */
1332         ino = string_to_inode(sourcename);
1333         if (!ino)
1334                 return;
1335         base_name = strrchr(sourcename, '/');
1336         if (base_name)
1337                 base_name++;
1338         else
1339                 base_name = sourcename;
1340         /*
1341          * Figure out the destination.  First see if it exists and is
1342          * a directory.
1343          */
1344         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1345                 dest = base_name;
1346         else {
1347                 /*
1348                  * OK, it doesn't exist.  See if it is
1349                  * '<dir>/basename' or 'basename'
1350                  */
1351                 cp = strrchr(destname, '/');
1352                 if (cp) {
1353                         *cp = 0;
1354                         dir = string_to_inode(destname);
1355                         if (!dir)
1356                                 return;
1357                         dest = cp+1;
1358                 } else {
1359                         dir = cwd;
1360                         dest = destname;
1361                 }
1362         }
1363
1364         if (debugfs_read_inode(ino, &inode, sourcename))
1365                 return;
1366
1367         retval = ext2fs_link(current_fs, dir, dest, ino,
1368                              ext2_file_type(inode.i_mode));
1369         if (retval)
1370                 com_err("make_link", retval, 0);
1371         return;
1372 }
1373
1374
1375 void do_link(int argc, char *argv[])
1376 {
1377         if (common_args_process(argc, argv, 3, 3, "link",
1378                                 "<source file> <dest_name>", CHECK_FS_RW))
1379                 return;
1380
1381         make_link(argv[1], argv[2]);
1382 }
1383
1384 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1385                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1386                             blk64_t ref_block EXT2FS_ATTR((unused)),
1387                             int ref_offset EXT2FS_ATTR((unused)),
1388                             void *private EXT2FS_ATTR((unused)))
1389 {
1390         blk64_t block;
1391
1392         block = *blocknr;
1393         ext2fs_block_alloc_stats2(fs, block, +1);
1394         return 0;
1395 }
1396
1397 void do_undel(int argc, char *argv[])
1398 {
1399         ext2_ino_t      ino;
1400         struct ext2_inode inode;
1401
1402         if (common_args_process(argc, argv, 2, 3, "undelete",
1403                                 "<inode_num> [dest_name]",
1404                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1405                 return;
1406
1407         ino = string_to_inode(argv[1]);
1408         if (!ino)
1409                 return;
1410
1411         if (debugfs_read_inode(ino, &inode, argv[1]))
1412                 return;
1413
1414         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1415                 com_err(argv[1], 0, "Inode is not marked as deleted");
1416                 return;
1417         }
1418
1419         /*
1420          * XXX this function doesn't handle changing the links count on the
1421          * parent directory when undeleting a directory.
1422          */
1423         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1424         inode.i_dtime = 0;
1425
1426         if (debugfs_write_inode(ino, &inode, argv[0]))
1427                 return;
1428
1429         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1430                               mark_blocks_proc, NULL);
1431
1432         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1433
1434         if (argc > 2)
1435                 make_link(argv[1], argv[2]);
1436 }
1437
1438 static void unlink_file_by_name(char *filename)
1439 {
1440         int             retval;
1441         ext2_ino_t      dir;
1442         char            *base_name;
1443
1444         base_name = strrchr(filename, '/');
1445         if (base_name) {
1446                 *base_name++ = '\0';
1447                 dir = string_to_inode(filename);
1448                 if (!dir)
1449                         return;
1450         } else {
1451                 dir = cwd;
1452                 base_name = filename;
1453         }
1454         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1455         if (retval)
1456                 com_err("unlink_file_by_name", retval, 0);
1457         return;
1458 }
1459
1460 void do_unlink(int argc, char *argv[])
1461 {
1462         if (common_args_process(argc, argv, 2, 2, "link",
1463                                 "<pathname>", CHECK_FS_RW))
1464                 return;
1465
1466         unlink_file_by_name(argv[1]);
1467 }
1468 #endif /* READ_ONLY */
1469
1470 void do_find_free_block(int argc, char *argv[])
1471 {
1472         blk64_t free_blk, goal, first_free = 0;
1473         int             count;
1474         errcode_t       retval;
1475         char            *tmp;
1476
1477         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1478                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1479                 return;
1480         }
1481         if (check_fs_open(argv[0]))
1482                 return;
1483
1484         if (argc > 1) {
1485                 count = strtol(argv[1],&tmp,0);
1486                 if (*tmp) {
1487                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1488                         return;
1489                 }
1490         } else
1491                 count = 1;
1492
1493         if (argc > 2) {
1494                 goal = strtol(argv[2], &tmp, 0);
1495                 if (*tmp) {
1496                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1497                         return;
1498                 }
1499         }
1500         else
1501                 goal = current_fs->super->s_first_data_block;
1502
1503         printf("Free blocks found: ");
1504         free_blk = goal - 1;
1505         while (count-- > 0) {
1506                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1507                                            &free_blk);
1508                 if (first_free) {
1509                         if (first_free == free_blk)
1510                                 break;
1511                 } else
1512                         first_free = free_blk;
1513                 if (retval) {
1514                         com_err("ext2fs_new_block", retval, 0);
1515                         return;
1516                 } else
1517                         printf("%llu ", free_blk);
1518         }
1519         printf("\n");
1520 }
1521
1522 void do_find_free_inode(int argc, char *argv[])
1523 {
1524         ext2_ino_t      free_inode, dir;
1525         int             mode;
1526         int             retval;
1527         char            *tmp;
1528
1529         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1530                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1531                 return;
1532         }
1533         if (check_fs_open(argv[0]))
1534                 return;
1535
1536         if (argc > 1) {
1537                 dir = strtol(argv[1], &tmp, 0);
1538                 if (*tmp) {
1539                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1540                         return;
1541                 }
1542         }
1543         else
1544                 dir = root;
1545         if (argc > 2) {
1546                 mode = strtol(argv[2], &tmp, 0);
1547                 if (*tmp) {
1548                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1549                         return;
1550                 }
1551         } else
1552                 mode = 010755;
1553
1554         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1555         if (retval)
1556                 com_err("ext2fs_new_inode", retval, 0);
1557         else
1558                 printf("Free inode found: %u\n", free_inode);
1559 }
1560
1561 #ifndef READ_ONLY
1562 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1563 {
1564         ext2_file_t     e2_file;
1565         errcode_t       retval;
1566         int             got;
1567         unsigned int    written;
1568         char            buf[8192];
1569         char            *ptr;
1570
1571         retval = ext2fs_file_open(current_fs, newfile,
1572                                   EXT2_FILE_WRITE, &e2_file);
1573         if (retval)
1574                 return retval;
1575
1576         while (1) {
1577                 got = read(fd, buf, sizeof(buf));
1578                 if (got == 0)
1579                         break;
1580                 if (got < 0) {
1581                         retval = errno;
1582                         goto fail;
1583                 }
1584                 ptr = buf;
1585                 while (got > 0) {
1586                         retval = ext2fs_file_write(e2_file, ptr,
1587                                                    got, &written);
1588                         if (retval)
1589                                 goto fail;
1590
1591                         got -= written;
1592                         ptr += written;
1593                 }
1594         }
1595         retval = ext2fs_file_close(e2_file);
1596         return retval;
1597
1598 fail:
1599         (void) ext2fs_file_close(e2_file);
1600         return retval;
1601 }
1602
1603
1604 void do_write(int argc, char *argv[])
1605 {
1606         int             fd;
1607         struct stat     statbuf;
1608         ext2_ino_t      newfile;
1609         errcode_t       retval;
1610         struct ext2_inode inode;
1611
1612         if (common_args_process(argc, argv, 3, 3, "write",
1613                                 "<native file> <new file>", CHECK_FS_RW))
1614                 return;
1615
1616         fd = open(argv[1], O_RDONLY);
1617         if (fd < 0) {
1618                 com_err(argv[1], errno, 0);
1619                 return;
1620         }
1621         if (fstat(fd, &statbuf) < 0) {
1622                 com_err(argv[1], errno, 0);
1623                 close(fd);
1624                 return;
1625         }
1626
1627         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1628         if (retval == 0) {
1629                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1630                 close(fd);
1631                 return;
1632         }
1633
1634         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1635         if (retval) {
1636                 com_err(argv[0], retval, 0);
1637                 close(fd);
1638                 return;
1639         }
1640         printf("Allocated inode: %u\n", newfile);
1641         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1642                              EXT2_FT_REG_FILE);
1643         if (retval == EXT2_ET_DIR_NO_SPACE) {
1644                 retval = ext2fs_expand_dir(current_fs, cwd);
1645                 if (retval) {
1646                         com_err(argv[0], retval, "while expanding directory");
1647                         close(fd);
1648                         return;
1649                 }
1650                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1651                                      EXT2_FT_REG_FILE);
1652         }
1653         if (retval) {
1654                 com_err(argv[2], retval, 0);
1655                 close(fd);
1656                 return;
1657         }
1658         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1659                 com_err(argv[0], 0, "Warning: inode already set");
1660         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1661         memset(&inode, 0, sizeof(inode));
1662         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1663         inode.i_atime = inode.i_ctime = inode.i_mtime =
1664                 current_fs->now ? current_fs->now : time(0);
1665         inode.i_links_count = 1;
1666         inode.i_size = statbuf.st_size;
1667         if (current_fs->super->s_feature_incompat &
1668             EXT3_FEATURE_INCOMPAT_EXTENTS)
1669                 inode.i_flags |= EXT4_EXTENTS_FL;
1670         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1671                 close(fd);
1672                 return;
1673         }
1674         if (LINUX_S_ISREG(inode.i_mode)) {
1675                 retval = copy_file(fd, newfile);
1676                 if (retval)
1677                         com_err("copy_file", retval, 0);
1678         }
1679         close(fd);
1680 }
1681
1682 void do_mknod(int argc, char *argv[])
1683 {
1684         unsigned long   mode, major, minor;
1685         ext2_ino_t      newfile;
1686         errcode_t       retval;
1687         struct ext2_inode inode;
1688         int             filetype, nr;
1689
1690         if (check_fs_open(argv[0]))
1691                 return;
1692         if (argc < 3 || argv[2][1]) {
1693         usage:
1694                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1695                 return;
1696         }
1697         mode = minor = major = 0;
1698         switch (argv[2][0]) {
1699                 case 'p':
1700                         mode = LINUX_S_IFIFO;
1701                         filetype = EXT2_FT_FIFO;
1702                         nr = 3;
1703                         break;
1704                 case 'c':
1705                         mode = LINUX_S_IFCHR;
1706                         filetype = EXT2_FT_CHRDEV;
1707                         nr = 5;
1708                         break;
1709                 case 'b':
1710                         mode = LINUX_S_IFBLK;
1711                         filetype = EXT2_FT_BLKDEV;
1712                         nr = 5;
1713                         break;
1714                 default:
1715                         filetype = 0;
1716                         nr = 0;
1717         }
1718         if (nr == 5) {
1719                 major = strtoul(argv[3], argv+3, 0);
1720                 minor = strtoul(argv[4], argv+4, 0);
1721                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1722                         nr = 0;
1723         }
1724         if (argc != nr)
1725                 goto usage;
1726         if (check_fs_read_write(argv[0]))
1727                 return;
1728         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1729         if (retval) {
1730                 com_err(argv[0], retval, 0);
1731                 return;
1732         }
1733         printf("Allocated inode: %u\n", newfile);
1734         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1735         if (retval == EXT2_ET_DIR_NO_SPACE) {
1736                 retval = ext2fs_expand_dir(current_fs, cwd);
1737                 if (retval) {
1738                         com_err(argv[0], retval, "while expanding directory");
1739                         return;
1740                 }
1741                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1742                                      filetype);
1743         }
1744         if (retval) {
1745                 com_err(argv[1], retval, 0);
1746                 return;
1747         }
1748         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1749                 com_err(argv[0], 0, "Warning: inode already set");
1750         ext2fs_mark_inode_bitmap2(current_fs->inode_map, newfile);
1751         ext2fs_mark_ib_dirty(current_fs);
1752         memset(&inode, 0, sizeof(inode));
1753         inode.i_mode = mode;
1754         inode.i_atime = inode.i_ctime = inode.i_mtime =
1755                 current_fs->now ? current_fs->now : time(0);
1756         if ((major < 256) && (minor < 256)) {
1757                 inode.i_block[0] = major*256+minor;
1758                 inode.i_block[1] = 0;
1759         } else {
1760                 inode.i_block[0] = 0;
1761                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1762         }
1763         inode.i_links_count = 1;
1764         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1765                 return;
1766 }
1767
1768 void do_mkdir(int argc, char *argv[])
1769 {
1770         char    *cp;
1771         ext2_ino_t      parent;
1772         char    *name;
1773         errcode_t retval;
1774
1775         if (common_args_process(argc, argv, 2, 2, "mkdir",
1776                                 "<filename>", CHECK_FS_RW))
1777                 return;
1778
1779         cp = strrchr(argv[1], '/');
1780         if (cp) {
1781                 *cp = 0;
1782                 parent = string_to_inode(argv[1]);
1783                 if (!parent) {
1784                         com_err(argv[1], ENOENT, 0);
1785                         return;
1786                 }
1787                 name = cp+1;
1788         } else {
1789                 parent = cwd;
1790                 name = argv[1];
1791         }
1792
1793 try_again:
1794         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1795         if (retval == EXT2_ET_DIR_NO_SPACE) {
1796                 retval = ext2fs_expand_dir(current_fs, parent);
1797                 if (retval) {
1798                         com_err(argv[0], retval, "while expanding directory");
1799                         return;
1800                 }
1801                 goto try_again;
1802         }
1803         if (retval) {
1804                 com_err("ext2fs_mkdir", retval, 0);
1805                 return;
1806         }
1807
1808 }
1809
1810 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1811                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1812                                blk64_t ref_block EXT2FS_ATTR((unused)),
1813                                int ref_offset EXT2FS_ATTR((unused)),
1814                                void *private EXT2FS_ATTR((unused)))
1815 {
1816         blk64_t block;
1817
1818         block = *blocknr;
1819         ext2fs_block_alloc_stats2(fs, block, -1);
1820         return 0;
1821 }
1822
1823 static void kill_file_by_inode(ext2_ino_t inode)
1824 {
1825         struct ext2_inode inode_buf;
1826
1827         if (debugfs_read_inode(inode, &inode_buf, 0))
1828                 return;
1829         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1830         if (debugfs_write_inode(inode, &inode_buf, 0))
1831                 return;
1832         if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf))
1833                 return;
1834
1835         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1836                               release_blocks_proc, NULL);
1837         printf("\n");
1838         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1839                                   LINUX_S_ISDIR(inode_buf.i_mode));
1840 }
1841
1842
1843 void do_kill_file(int argc, char *argv[])
1844 {
1845         ext2_ino_t inode_num;
1846
1847         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1848                 return;
1849
1850         kill_file_by_inode(inode_num);
1851 }
1852
1853 void do_rm(int argc, char *argv[])
1854 {
1855         int retval;
1856         ext2_ino_t inode_num;
1857         struct ext2_inode inode;
1858
1859         if (common_args_process(argc, argv, 2, 2, "rm",
1860                                 "<filename>", CHECK_FS_RW))
1861                 return;
1862
1863         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1864         if (retval) {
1865                 com_err(argv[0], retval, "while trying to resolve filename");
1866                 return;
1867         }
1868
1869         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1870                 return;
1871
1872         if (LINUX_S_ISDIR(inode.i_mode)) {
1873                 com_err(argv[0], 0, "file is a directory");
1874                 return;
1875         }
1876
1877         --inode.i_links_count;
1878         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1879                 return;
1880
1881         unlink_file_by_name(argv[1]);
1882         if (inode.i_links_count == 0)
1883                 kill_file_by_inode(inode_num);
1884 }
1885
1886 struct rd_struct {
1887         ext2_ino_t      parent;
1888         int             empty;
1889 };
1890
1891 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1892                       int       entry EXT2FS_ATTR((unused)),
1893                       struct ext2_dir_entry *dirent,
1894                       int       offset EXT2FS_ATTR((unused)),
1895                       int       blocksize EXT2FS_ATTR((unused)),
1896                       char      *buf EXT2FS_ATTR((unused)),
1897                       void      *private)
1898 {
1899         struct rd_struct *rds = (struct rd_struct *) private;
1900
1901         if (dirent->inode == 0)
1902                 return 0;
1903         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1904                 return 0;
1905         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1906             (dirent->name[1] == '.')) {
1907                 rds->parent = dirent->inode;
1908                 return 0;
1909         }
1910         rds->empty = 0;
1911         return 0;
1912 }
1913
1914 void do_rmdir(int argc, char *argv[])
1915 {
1916         int retval;
1917         ext2_ino_t inode_num;
1918         struct ext2_inode inode;
1919         struct rd_struct rds;
1920
1921         if (common_args_process(argc, argv, 2, 2, "rmdir",
1922                                 "<filename>", CHECK_FS_RW))
1923                 return;
1924
1925         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1926         if (retval) {
1927                 com_err(argv[0], retval, "while trying to resolve filename");
1928                 return;
1929         }
1930
1931         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1932                 return;
1933
1934         if (!LINUX_S_ISDIR(inode.i_mode)) {
1935                 com_err(argv[0], 0, "file is not a directory");
1936                 return;
1937         }
1938
1939         rds.parent = 0;
1940         rds.empty = 1;
1941
1942         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1943                                     0, rmdir_proc, &rds);
1944         if (retval) {
1945                 com_err(argv[0], retval, "while iterating over directory");
1946                 return;
1947         }
1948         if (rds.empty == 0) {
1949                 com_err(argv[0], 0, "directory not empty");
1950                 return;
1951         }
1952
1953         inode.i_links_count = 0;
1954         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1955                 return;
1956
1957         unlink_file_by_name(argv[1]);
1958         kill_file_by_inode(inode_num);
1959
1960         if (rds.parent) {
1961                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1962                         return;
1963                 if (inode.i_links_count > 1)
1964                         inode.i_links_count--;
1965                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1966                         return;
1967         }
1968 }
1969 #endif /* READ_ONLY */
1970
1971 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1972                             char *argv[] EXT2FS_ATTR((unused)))
1973 {
1974         if (current_fs)
1975                 printf("Open mode: read-%s\n",
1976                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1977         printf("Filesystem in use: %s\n",
1978                current_fs ? current_fs->device_name : "--none--");
1979 }
1980
1981 #ifndef READ_ONLY
1982 void do_expand_dir(int argc, char *argv[])
1983 {
1984         ext2_ino_t inode;
1985         int retval;
1986
1987         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1988                 return;
1989
1990         retval = ext2fs_expand_dir(current_fs, inode);
1991         if (retval)
1992                 com_err("ext2fs_expand_dir", retval, 0);
1993         return;
1994 }
1995
1996 void do_features(int argc, char *argv[])
1997 {
1998         int     i;
1999
2000         if (check_fs_open(argv[0]))
2001                 return;
2002
2003         if ((argc != 1) && check_fs_read_write(argv[0]))
2004                 return;
2005         for (i=1; i < argc; i++) {
2006                 if (e2p_edit_feature(argv[i],
2007                                      &current_fs->super->s_feature_compat, 0))
2008                         com_err(argv[0], 0, "Unknown feature: %s\n",
2009                                 argv[i]);
2010                 else
2011                         ext2fs_mark_super_dirty(current_fs);
2012         }
2013         print_features(current_fs->super, stdout);
2014 }
2015 #endif /* READ_ONLY */
2016
2017 void do_bmap(int argc, char *argv[])
2018 {
2019         ext2_ino_t      ino;
2020         blk64_t         blk, pblk;
2021         int             err;
2022         errcode_t       errcode;
2023
2024         if (common_args_process(argc, argv, 3, 3, argv[0],
2025                                 "<file> logical_blk", 0))
2026                 return;
2027
2028         ino = string_to_inode(argv[1]);
2029         if (!ino)
2030                 return;
2031         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
2032
2033         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
2034         if (errcode) {
2035                 com_err("argv[0]", errcode,
2036                         "while mapping logical block %llu\n", blk);
2037                 return;
2038         }
2039         printf("%llu\n", pblk);
2040 }
2041
2042 void do_imap(int argc, char *argv[])
2043 {
2044         ext2_ino_t      ino;
2045         unsigned long   group, block, block_nr, offset;
2046
2047         if (common_args_process(argc, argv, 2, 2, argv[0],
2048                                 "<file>", 0))
2049                 return;
2050         ino = string_to_inode(argv[1]);
2051         if (!ino)
2052                 return;
2053
2054         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2055         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2056                 EXT2_INODE_SIZE(current_fs->super);
2057         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2058         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2059                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2060                         group);
2061                 return;
2062         }
2063         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2064                 block;
2065         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2066
2067         printf("Inode %d is part of block group %lu\n"
2068                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2069                block_nr, offset);
2070
2071 }
2072
2073 #ifndef READ_ONLY
2074 void do_set_current_time(int argc, char *argv[])
2075 {
2076         time_t now;
2077
2078         if (common_args_process(argc, argv, 2, 2, argv[0],
2079                                 "<time>", 0))
2080                 return;
2081
2082         now = string_to_time(argv[1]);
2083         if (now == ((time_t) -1)) {
2084                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2085                         argv[1]);
2086                 return;
2087
2088         } else {
2089                 printf("Setting current time to %s\n", time_to_string(now));
2090                 current_fs->now = now;
2091         }
2092 }
2093 #endif /* READ_ONLY */
2094
2095 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2096 {
2097         int compat, bit, ret;
2098         unsigned int feature_mask;
2099
2100         if (name) {
2101                 if (feature_type == E2P_FS_FEATURE)
2102                         ret = e2p_string2feature(name, &compat, &feature_mask);
2103                 else
2104                         ret = e2p_jrnl_string2feature(name, &compat,
2105                                                       &feature_mask);
2106                 if (ret)
2107                         return ret;
2108
2109                 if (!(supp[compat] & feature_mask))
2110                         return 1;
2111         } else {
2112                 for (compat = 0; compat < 3; compat++) {
2113                         for (bit = 0, feature_mask = 1; bit < 32;
2114                              bit++, feature_mask <<= 1) {
2115                                 if (supp[compat] & feature_mask) {
2116                                         if (feature_type == E2P_FS_FEATURE)
2117                                                 fprintf(stdout, " %s",
2118                                                 e2p_feature2string(compat,
2119                                                 feature_mask));
2120                                         else
2121                                                 fprintf(stdout, " %s",
2122                                                 e2p_jrnl_feature2string(compat,
2123                                                 feature_mask));
2124                                 }
2125                         }
2126                 }
2127                 fprintf(stdout, "\n");
2128         }
2129
2130         return 0;
2131 }
2132
2133 void do_supported_features(int argc, char *argv[])
2134 {
2135         int     ret;
2136         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2137                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2138                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2139         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2140                                  JFS_KNOWN_INCOMPAT_FEATURES,
2141                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2142
2143         if (argc > 1) {
2144                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2145                 if (ret) {
2146                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2147                                                 argv[1]);
2148                 }
2149                 if (ret)
2150                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2151                 else
2152                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2153         } else {
2154                 fprintf(stdout, "Supported features:");
2155                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2156                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2157         }
2158 }
2159
2160 #ifndef READ_ONLY
2161 void do_punch(int argc, char *argv[])
2162 {
2163         ext2_ino_t      ino;
2164         blk64_t         start, end;
2165         int             err;
2166         errcode_t       errcode;
2167
2168         if (common_args_process(argc, argv, 3, 4, argv[0],
2169                                 "<file> start_blk [end_blk]",
2170                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2171                 return;
2172
2173         ino = string_to_inode(argv[1]);
2174         if (!ino)
2175                 return;
2176         start = parse_ulong(argv[2], argv[0], "logical_block", &err);
2177         if (argc == 4)
2178                 end = parse_ulong(argv[3], argv[0], "logical_block", &err);
2179         else
2180                 end = ~0;
2181
2182         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2183
2184         if (errcode) {
2185                 com_err(argv[0], errcode,
2186                         "while truncating inode %u from %llu to %llu\n", ino,
2187                         (unsigned long long) start, (unsigned long long) end);
2188                 return;
2189         }
2190 }
2191 #endif /* READ_ONLY */
2192
2193 void do_symlink(int argc, char *argv[])
2194 {
2195         char            *cp;
2196         ext2_ino_t      parent;
2197         char            *name, *target;
2198         errcode_t       retval;
2199
2200         if (common_args_process(argc, argv, 3, 3, "symlink",
2201                                 "<filename> <target>", CHECK_FS_RW))
2202                 return;
2203
2204         cp = strrchr(argv[1], '/');
2205         if (cp) {
2206                 *cp = 0;
2207                 parent = string_to_inode(argv[1]);
2208                 if (!parent) {
2209                         com_err(argv[1], ENOENT, 0);
2210                         return;
2211                 }
2212                 name = cp+1;
2213         } else {
2214                 parent = cwd;
2215                 name = argv[1];
2216         }
2217         target = argv[2];
2218
2219 try_again:
2220         retval = ext2fs_symlink(current_fs, parent, 0, name, target);
2221         if (retval == EXT2_ET_DIR_NO_SPACE) {
2222                 retval = ext2fs_expand_dir(current_fs, parent);
2223                 if (retval) {
2224                         com_err(argv[0], retval, "while expanding directory");
2225                         return;
2226                 }
2227                 goto try_again;
2228         }
2229         if (retval) {
2230                 com_err("ext2fs_symlink", retval, 0);
2231                 return;
2232         }
2233
2234 }
2235
2236 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2237 {
2238         struct ext2_super_block *sb;
2239         struct mmp_struct *mmp_s;
2240         time_t t;
2241         errcode_t retval = 0;
2242
2243         if (check_fs_open(argv[0]))
2244                 return;
2245
2246         sb  = current_fs->super;
2247         if (sb->s_mmp_block <= sb->s_first_data_block ||
2248             sb->s_mmp_block >= ext2fs_blocks_count(sb)) {
2249                 com_err(argv[0], EXT2_ET_MMP_BAD_BLOCK, "while dumping it.\n");
2250                 return;
2251         }
2252
2253         if (current_fs->mmp_buf == NULL) {
2254                 retval = ext2fs_get_mem(current_fs->blocksize,
2255                                         &current_fs->mmp_buf);
2256                 if (retval) {
2257                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2258                         return;
2259                 }
2260         }
2261
2262         mmp_s = current_fs->mmp_buf;
2263
2264         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2265                                  current_fs->mmp_buf);
2266         if (retval) {
2267                 com_err(argv[0], retval, "reading MMP block.\n");
2268                 return;
2269         }
2270
2271         t = mmp_s->mmp_time;
2272         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2273         fprintf(stdout, "update_interval: %d\n",
2274                 current_fs->super->s_mmp_update_interval);
2275         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2276         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2277         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2278         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2279         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2280         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2281 }
2282
2283 static int source_file(const char *cmd_file, int ss_idx)
2284 {
2285         FILE            *f;
2286         char            buf[256];
2287         char            *cp;
2288         int             exit_status = 0;
2289         int             retval;
2290
2291         if (strcmp(cmd_file, "-") == 0)
2292                 f = stdin;
2293         else {
2294                 f = fopen(cmd_file, "r");
2295                 if (!f) {
2296                         perror(cmd_file);
2297                         exit(1);
2298                 }
2299         }
2300         fflush(stdout);
2301         fflush(stderr);
2302         setbuf(stdout, NULL);
2303         setbuf(stderr, NULL);
2304         while (!feof(f)) {
2305                 if (fgets(buf, sizeof(buf), f) == NULL)
2306                         break;
2307                 cp = strchr(buf, '\n');
2308                 if (cp)
2309                         *cp = 0;
2310                 cp = strchr(buf, '\r');
2311                 if (cp)
2312                         *cp = 0;
2313                 printf("debugfs: %s\n", buf);
2314                 retval = ss_execute_line(ss_idx, buf);
2315                 if (retval) {
2316                         ss_perror(ss_idx, retval, buf);
2317                         exit_status++;
2318                 }
2319         }
2320         if (f != stdin)
2321                 fclose(f);
2322         return exit_status;
2323 }
2324
2325 int main(int argc, char **argv)
2326 {
2327         int             retval;
2328         const char      *usage =
2329                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2330                 "[-R request] [-V] ["
2331 #ifndef READ_ONLY
2332                 "[-w] "
2333 #endif
2334                 "[-c] device]";
2335         int             c;
2336         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2337         char            *request = 0;
2338         int             exit_status = 0;
2339         char            *cmd_file = 0;
2340         blk64_t         superblock = 0;
2341         blk64_t         blocksize = 0;
2342         int             catastrophic = 0;
2343         char            *data_filename = 0;
2344 #ifdef READ_ONLY
2345         const char      *opt_string = "icR:f:b:s:Vd:D";
2346 #else
2347         const char      *opt_string = "iwcR:f:b:s:Vd:D";
2348 #endif
2349
2350         if (debug_prog_name == 0)
2351 #ifdef READ_ONLY
2352                 debug_prog_name = "rdebugfs";
2353 #else
2354                 debug_prog_name = "debugfs";
2355 #endif
2356         add_error_table(&et_ext2_error_table);
2357         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2358                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2359
2360         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2361                 switch (c) {
2362                 case 'R':
2363                         request = optarg;
2364                         break;
2365                 case 'f':
2366                         cmd_file = optarg;
2367                         break;
2368                 case 'd':
2369                         data_filename = optarg;
2370                         break;
2371                 case 'i':
2372                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2373                         break;
2374 #ifndef READ_ONLY
2375                 case 'w':
2376                         open_flags |= EXT2_FLAG_RW;
2377                         break;
2378 #endif
2379                 case 'D':
2380                         open_flags |= EXT2_FLAG_DIRECT_IO;
2381                         break;
2382                 case 'b':
2383                         blocksize = parse_ulong(optarg, argv[0],
2384                                                 "block size", 0);
2385                         break;
2386                 case 's':
2387                         superblock = parse_ulong(optarg, argv[0],
2388                                                  "superblock number", 0);
2389                         break;
2390                 case 'c':
2391                         catastrophic = 1;
2392                         break;
2393                 case 'V':
2394                         /* Print version number and exit */
2395                         fprintf(stderr, "\tUsing %s\n",
2396                                 error_message(EXT2_ET_BASE));
2397                         exit(0);
2398                 default:
2399                         com_err(argv[0], 0, usage, debug_prog_name);
2400                         return 1;
2401                 }
2402         }
2403         if (optind < argc)
2404                 open_filesystem(argv[optind], open_flags,
2405                                 superblock, blocksize, catastrophic,
2406                                 data_filename);
2407
2408         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2409                                        &debug_cmds, &retval);
2410         if (retval) {
2411                 ss_perror(sci_idx, retval, "creating invocation");
2412                 exit(1);
2413         }
2414         ss_get_readline(sci_idx);
2415
2416         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2417         if (retval) {
2418                 ss_perror(sci_idx, retval, "adding standard requests");
2419                 exit (1);
2420         }
2421         if (extra_cmds)
2422                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2423         if (retval) {
2424                 ss_perror(sci_idx, retval, "adding extra requests");
2425                 exit (1);
2426         }
2427         if (request) {
2428                 retval = 0;
2429                 retval = ss_execute_line(sci_idx, request);
2430                 if (retval) {
2431                         ss_perror(sci_idx, retval, request);
2432                         exit_status++;
2433                 }
2434         } else if (cmd_file) {
2435                 exit_status = source_file(cmd_file, sci_idx);
2436         } else {
2437                 ss_listen(sci_idx);
2438         }
2439
2440         ss_delete_invocation(sci_idx);
2441
2442         if (current_fs)
2443                 close_filesystem();
2444
2445         remove_error_table(&et_ext2_error_table);
2446         return exit_status;
2447 }