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 #include <libgen.h>
  19 #ifdef HAVE_GETOPT_H
  20 #include <getopt.h>
  21 #else
  22 extern int optind;
  23 extern char *optarg;
  24 #endif
  25 #ifdef HAVE_ERRNO_H
  26 #include <errno.h>
  27 #endif
  28 #include <fcntl.h>
  29 #ifdef HAVE_SYS_SYSMACROS_H
  30 #include <sys/sysmacros.h>
  31 #endif
  32
  33 #include "debugfs.h"
  34 #include "uuid/uuid.h"
  35 #include "e2p/e2p.h"
  36
  37 #include <ext2fs/ext2_ext_attr.h>
  38
  39 #include "../version.h"
  40 #include "jfs_user.h"
  41 #include "support/plausible.h"
  42
  43 #ifndef BUFSIZ
  44 #define BUFSIZ 8192
  45 #endif
  46
  47 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
  48 int journal_enable_debug = -1;
  49 #endif
  50
  51 ss_request_table *extra_cmds;
  52 const char *debug_prog_name;
  53 int sci_idx;
  54
  55 ext2_filsys     current_fs;
  56 quota_ctx_t     current_qctx;
  57 ext2_ino_t      root, cwd;
  58
  59 static int debugfs_setup_tdb(const char *device_name, char *undo_file,
  60                              io_manager *io_ptr)
  61 {
  62         errcode_t retval = ENOMEM;
  63         char *tdb_dir = NULL, *tdb_file = NULL;
  64         char *dev_name, *tmp_name;
  65
  66         /* (re)open a specific undo file */
  67         if (undo_file && undo_file[0] != 0) {
  68                 retval = set_undo_io_backing_manager(*io_ptr);
  69                 if (retval)
  70                         goto err;
  71                 *io_ptr = undo_io_manager;
  72                 retval = set_undo_io_backup_file(undo_file);
  73                 if (retval)
  74                         goto err;
  75                 printf("Overwriting existing filesystem; this can be undone "
  76                         "using the command:\n"
  77                         "    e2undo %s %s\n\n",
  78                         undo_file, device_name);
  79                 return retval;
  80         }
  81
  82         /*
  83          * Configuration via a conf file would be
  84          * nice
  85          */
  86         tdb_dir = ss_safe_getenv("E2FSPROGS_UNDO_DIR");
  87         if (!tdb_dir)
  88                 tdb_dir = "/var/lib/e2fsprogs";
  89
  90         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
  91             access(tdb_dir, W_OK))
  92                 return 0;
  93
  94         tmp_name = strdup(device_name);
  95         if (!tmp_name)
  96                 goto errout;
  97         dev_name = basename(tmp_name);
  98         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
  99         if (!tdb_file) {
 100                 free(tmp_name);
 101                 goto errout;
 102         }
 103         sprintf(tdb_file, "%s/debugfs-%s.e2undo", tdb_dir, dev_name);
 104         free(tmp_name);
 105
 106         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
 107                 retval = errno;
 108                 com_err("debugfs", retval,
 109                         "while trying to delete %s", tdb_file);
 110                 goto errout;
 111         }
 112
 113         retval = set_undo_io_backing_manager(*io_ptr);
 114         if (retval)
 115                 goto errout;
 116         *io_ptr = undo_io_manager;
 117         retval = set_undo_io_backup_file(tdb_file);
 118         if (retval)
 119                 goto errout;
 120         printf("Overwriting existing filesystem; this can be undone "
 121                 "using the command:\n"
 122                 "    e2undo %s %s\n\n", tdb_file, device_name);
 123
 124         free(tdb_file);
 125         return 0;
 126 errout:
 127         free(tdb_file);
 128 err:
 129         com_err("debugfs", retval, "while trying to setup undo file\n");
 130         return retval;
 131 }
 132
 133 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
 134                             blk64_t blocksize, int catastrophic,
 135                             char *data_filename, char *undo_file)
 136 {
 137         int     retval;
 138         io_channel data_io = 0;
 139         io_manager io_ptr = unix_io_manager;
 140
 141         if (superblock != 0 && blocksize == 0) {
 142                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
 143                 current_fs = NULL;
 144                 return;
 145         }
 146
 147         if (data_filename) {
 148                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
 149                         com_err(device, 0,
 150                                 "The -d option is only valid when reading an e2image file");
 151                         current_fs = NULL;
 152                         return;
 153                 }
 154                 retval = unix_io_manager->open(data_filename, 0, &data_io);
 155                 if (retval) {
 156                         com_err(data_filename, 0, "while opening data source");
 157                         current_fs = NULL;
 158                         return;
 159                 }
 160         }
 161
 162         if (catastrophic)
 163                 open_flags |= EXT2_FLAG_SKIP_MMP | EXT2_FLAG_IGNORE_SB_ERRORS;
 164
 165         if (undo_file) {
 166                 retval = debugfs_setup_tdb(device, undo_file, &io_ptr);
 167                 if (retval)
 168                         exit(1);
 169         }
 170
 171 try_open_again:
 172         retval = ext2fs_open(device, open_flags, superblock, blocksize,
 173                              io_ptr, &current_fs);
 174         if (retval && !(open_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 175                 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 176                 printf("Checksum errors in superblock!  Retrying...\n");
 177                 goto try_open_again;
 178         }
 179         if (retval) {
 180                 com_err(device, retval, "while opening filesystem");
 181                 if (retval == EXT2_ET_BAD_MAGIC)
 182                         check_plausibility(device, CHECK_FS_EXIST, NULL);
 183                 current_fs = NULL;
 184                 return;
 185         }
 186         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 187
 188         if (catastrophic)
 189                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 190         else {
 191                 retval = ext2fs_read_bitmaps(current_fs);
 192                 if (retval) {
 193                         com_err(device, retval,
 194                                 "while reading allocation bitmaps");
 195                         goto errout;
 196                 }
 197         }
 198
 199         if (data_io) {
 200                 retval = ext2fs_set_data_io(current_fs, data_io);
 201                 if (retval) {
 202                         com_err(device, retval,
 203                                 "while setting data source");
 204                         goto errout;
 205                 }
 206         }
 207
 208         root = cwd = EXT2_ROOT_INO;
 209         return;
 210
 211 errout:
 212         retval = ext2fs_close_free(&current_fs);
 213         if (retval)
 214                 com_err(device, retval, "while trying to close filesystem");
 215 }
 216
 217 void do_open_filesys(int argc, char **argv)
 218 {
 219         int     c, err;
 220         int     catastrophic = 0;
 221         blk64_t superblock = 0;
 222         blk64_t blocksize = 0;
 223         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 224         char    *data_filename = 0;
 225         char    *undo_file = NULL;
 226
 227         reset_getopt();
 228         while ((c = getopt(argc, argv, "iwfecb:s:d:Dz:")) != EOF) {
 229                 switch (c) {
 230                 case 'i':
 231                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 232                         break;
 233                 case 'w':
 234 #ifdef READ_ONLY
 235                         goto print_usage;
 236 #else
 237                         open_flags |= EXT2_FLAG_RW;
 238 #endif /* READ_ONLY */
 239                         break;
 240                 case 'f':
 241                         open_flags |= EXT2_FLAG_FORCE;
 242                         break;
 243                 case 'e':
 244                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 245                         break;
 246                 case 'c':
 247                         catastrophic = 1;
 248                         break;
 249                 case 'd':
 250                         data_filename = optarg;
 251                         break;
 252                 case 'D':
 253                         open_flags |= EXT2_FLAG_DIRECT_IO;
 254                         break;
 255                 case 'b':
 256                         blocksize = parse_ulong(optarg, argv[0],
 257                                                 "block size", &err);
 258                         if (err)
 259                                 return;
 260                         break;
 261                 case 's':
 262                         err = strtoblk(argv[0], optarg,
 263                                        "superblock block number", &superblock);
 264                         if (err)
 265                                 return;
 266                         break;
 267                 case 'z':
 268                         undo_file = optarg;
 269                         break;
 270                 default:
 271                         goto print_usage;
 272                 }
 273         }
 274         if (optind != argc-1) {
 275                 goto print_usage;
 276         }
 277         if (check_fs_not_open(argv[0]))
 278                 return;
 279         open_filesystem(argv[optind], open_flags,
 280                         superblock, blocksize, catastrophic,
 281                         data_filename, undo_file);
 282         return;
 283
 284 print_usage:
 285         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 286                 "[-d image_filename] [-z undo_file] [-c] [-i] [-f] [-e] [-D] "
 287 #ifndef READ_ONLY
 288                 "[-w] "
 289 #endif
 290                 "<device>\n", argv[0]);
 291 }
 292
 293 void do_lcd(int argc, char **argv)
 294 {
 295         if (argc != 2) {
 296                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 297                 return;
 298         }
 299
 300         if (chdir(argv[1]) == -1) {
 301                 com_err(argv[0], errno,
 302                         "while trying to change native directory to %s",
 303                         argv[1]);
 304                 return;
 305         }
 306 }
 307
 308 static void close_filesystem(NOARGS)
 309 {
 310         int     retval;
 311
 312         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 313                 retval = ext2fs_write_inode_bitmap(current_fs);
 314                 if (retval)
 315                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 316         }
 317         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 318                 retval = ext2fs_write_block_bitmap(current_fs);
 319                 if (retval)
 320                         com_err("ext2fs_write_block_bitmap", retval, 0);
 321         }
 322         if (current_qctx)
 323                 quota_release_context(&current_qctx);
 324         retval = ext2fs_close_free(&current_fs);
 325         if (retval)
 326                 com_err("ext2fs_close", retval, 0);
 327         return;
 328 }
 329
 330 void do_close_filesys(int argc, char **argv)
 331 {
 332         int     c;
 333
 334         if (check_fs_open(argv[0]))
 335                 return;
 336
 337         reset_getopt();
 338         while ((c = getopt (argc, argv, "a")) != EOF) {
 339                 switch (c) {
 340                 case 'a':
 341                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 342                         break;
 343                 default:
 344                         goto print_usage;
 345                 }
 346         }
 347
 348         if (argc > optind) {
 349         print_usage:
 350                 com_err(0, 0, "Usage: close_filesys [-a]");
 351                 return;
 352         }
 353
 354         close_filesystem();
 355 }
 356
 357 #ifndef READ_ONLY
 358 void do_init_filesys(int argc, char **argv)
 359 {
 360         struct ext2_super_block param;
 361         errcode_t       retval;
 362         int             err;
 363         blk64_t         blocks;
 364
 365         if (common_args_process(argc, argv, 3, 3, "initialize",
 366                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 367                 return;
 368
 369         memset(&param, 0, sizeof(struct ext2_super_block));
 370         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 371         if (err)
 372                 return;
 373         ext2fs_blocks_count_set(&param, blocks);
 374         retval = ext2fs_initialize(argv[1], 0, &param,
 375                                    unix_io_manager, &current_fs);
 376         if (retval) {
 377                 com_err(argv[1], retval, "while initializing filesystem");
 378                 current_fs = NULL;
 379                 return;
 380         }
 381         root = cwd = EXT2_ROOT_INO;
 382         return;
 383 }
 384
 385 static void print_features(struct ext2_super_block * s, FILE *f)
 386 {
 387         int     i, j, printed=0;
 388         __u32   *mask = &s->s_feature_compat, m;
 389
 390         fputs("Filesystem features:", f);
 391         for (i=0; i <3; i++,mask++) {
 392                 for (j=0,m=1; j < 32; j++, m<<=1) {
 393                         if (*mask & m) {
 394                                 fprintf(f, " %s", e2p_feature2string(i, m));
 395                                 printed++;
 396                         }
 397                 }
 398         }
 399         if (printed == 0)
 400                 fputs("(none)", f);
 401         fputs("\n", f);
 402 }
 403 #endif /* READ_ONLY */
 404
 405 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 406                           const char *str, int *first, FILE *f)
 407 {
 408         if (ext2fs_bg_flags_test(fs, group, mask)) {
 409                 if (*first) {
 410                         fputs("           [", f);
 411                         *first = 0;
 412                 } else
 413                         fputs(", ", f);
 414                 fputs(str, f);
 415         }
 416 }
 417
 418 void do_show_super_stats(int argc, char *argv[])
 419 {
 420         const char *units ="block";
 421         dgrp_t  i;
 422         FILE    *out;
 423         int     c, header_only = 0;
 424         int     numdirs = 0, first, gdt_csum;
 425
 426         reset_getopt();
 427         while ((c = getopt (argc, argv, "h")) != EOF) {
 428                 switch (c) {
 429                 case 'h':
 430                         header_only++;
 431                         break;
 432                 default:
 433                         goto print_usage;
 434                 }
 435         }
 436         if (optind != argc) {
 437                 goto print_usage;
 438         }
 439         if (check_fs_open(argv[0]))
 440                 return;
 441         out = open_pager();
 442
 443         if (ext2fs_has_feature_bigalloc(current_fs->super))
 444                 units = "cluster";
 445
 446         list_super2(current_fs->super, out);
 447         if (ext2fs_has_feature_metadata_csum(current_fs->super) &&
 448             !ext2fs_superblock_csum_verify(current_fs,
 449                                            current_fs->super)) {
 450                 __u32 orig_csum = current_fs->super->s_checksum;
 451
 452                 ext2fs_superblock_csum_set(current_fs,
 453                                            current_fs->super);
 454                 fprintf(out, "Expected Checksum:        0x%08x\n",
 455                         current_fs->super->s_checksum);
 456                 current_fs->super->s_checksum = orig_csum;
 457         }
 458         for (i=0; i < current_fs->group_desc_count; i++)
 459                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 460         fprintf(out, "Directories:              %d\n", numdirs);
 461
 462         if (header_only) {
 463                 close_pager(out);
 464                 return;
 465         }
 466
 467         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 468         for (i = 0; i < current_fs->group_desc_count; i++) {
 469                 fprintf(out, " Group %2d: block bitmap at %llu, "
 470                         "inode bitmap at %llu, "
 471                         "inode table at %llu\n"
 472                         "           %u free %s%s, "
 473                         "%u free %s, "
 474                         "%u used %s%s",
 475                         i, ext2fs_block_bitmap_loc(current_fs, i),
 476                         ext2fs_inode_bitmap_loc(current_fs, i),
 477                         ext2fs_inode_table_loc(current_fs, i),
 478                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 479                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 480                         "s" : "",
 481                         ext2fs_bg_free_inodes_count(current_fs, i),
 482                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 483                         "inodes" : "inode",
 484                         ext2fs_bg_used_dirs_count(current_fs, i),
 485                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 486                                 : "directory", gdt_csum ? ", " : "\n");
 487                 if (gdt_csum)
 488                         fprintf(out, "%u unused %s\n",
 489                                 ext2fs_bg_itable_unused(current_fs, i),
 490                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 491                                 "inodes" : "inode");
 492                 first = 1;
 493                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 494                               &first, out);
 495                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 496                               &first, out);
 497                 if (gdt_csum) {
 498                         fprintf(out, "%sChecksum 0x%04x",
 499                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 500                         first = 0;
 501                 }
 502                 if (!first)
 503                         fputs("]\n", out);
 504         }
 505         close_pager(out);
 506         return;
 507 print_usage:
 508         fprintf(stderr, "%s: Usage: show_super_stats [-h]\n", argv[0]);
 509 }
 510
 511 #ifndef READ_ONLY
 512 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 513                       char **argv EXT2FS_ATTR((unused)))
 514 {
 515         if (check_fs_open(argv[0]))
 516                 return;
 517         if (check_fs_read_write(argv[0]))
 518                 return;
 519
 520         if (argv[1] && !strcmp(argv[1], "-clean"))
 521                 current_fs->super->s_state |= EXT2_VALID_FS;
 522         else
 523                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 524         ext2fs_mark_super_dirty(current_fs);
 525 }
 526 #endif /* READ_ONLY */
 527
 528 struct list_blocks_struct {
 529         FILE            *f;
 530         e2_blkcnt_t     total;
 531         blk64_t         first_block, last_block;
 532         e2_blkcnt_t     first_bcnt, last_bcnt;
 533         e2_blkcnt_t     first;
 534 };
 535
 536 static void finish_range(struct list_blocks_struct *lb)
 537 {
 538         if (lb->first_block == 0)
 539                 return;
 540         if (lb->first)
 541                 lb->first = 0;
 542         else
 543                 fprintf(lb->f, ", ");
 544         if (lb->first_block == lb->last_block)
 545                 fprintf(lb->f, "(%lld):%llu",
 546                         (long long)lb->first_bcnt, lb->first_block);
 547         else
 548                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 549                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 550                         lb->first_block, lb->last_block);
 551         lb->first_block = 0;
 552 }
 553
 554 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 555                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 556                             blk64_t ref_block EXT2FS_ATTR((unused)),
 557                             int ref_offset EXT2FS_ATTR((unused)),
 558                             void *private)
 559 {
 560         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 561
 562         lb->total++;
 563         if (blockcnt >= 0) {
 564                 /*
 565                  * See if we can add on to the existing range (if it exists)
 566                  */
 567                 if (lb->first_block &&
 568                     (lb->last_block+1 == *blocknr) &&
 569                     (lb->last_bcnt+1 == blockcnt)) {
 570                         lb->last_block = *blocknr;
 571                         lb->last_bcnt = blockcnt;
 572                         return 0;
 573                 }
 574                 /*
 575                  * Start a new range.
 576                  */
 577                 finish_range(lb);
 578                 lb->first_block = lb->last_block = *blocknr;
 579                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 580                 return 0;
 581         }
 582         /*
 583          * Not a normal block.  Always force a new range.
 584          */
 585         finish_range(lb);
 586         if (lb->first)
 587                 lb->first = 0;
 588         else
 589                 fprintf(lb->f, ", ");
 590         if (blockcnt == -1)
 591                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 592         else if (blockcnt == -2)
 593                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 594         else if (blockcnt == -3)
 595                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 596         return 0;
 597 }
 598
 599 static void internal_dump_inode_extra(FILE *out,
 600                                       const char *prefix EXT2FS_ATTR((unused)),
 601                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 602                                       struct ext2_inode_large *inode)
 603 {
 604         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 605         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 606                         EXT2_GOOD_OLD_INODE_SIZE) {
 607                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 608                                 inode->i_extra_isize);
 609                 return;
 610         }
 611 }
 612
 613 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 614 {
 615         struct list_blocks_struct lb;
 616
 617         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 618         lb.total = 0;
 619         lb.first_block = 0;
 620         lb.f = f;
 621         lb.first = 1;
 622         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 623                               list_blocks_proc, (void *)&lb);
 624         finish_range(&lb);
 625         if (lb.total)
 626                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 627         fprintf(f,"\n");
 628 }
 629
 630 static int int_log10(unsigned long long arg)
 631 {
 632         int     l = 0;
 633
 634         arg = arg / 10;
 635         while (arg) {
 636                 l++;
 637                 arg = arg / 10;
 638         }
 639         return l;
 640 }
 641
 642 #define DUMP_LEAF_EXTENTS       0x01
 643 #define DUMP_NODE_EXTENTS       0x02
 644 #define DUMP_EXTENT_TABLE       0x04
 645
 646 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 647                          int flags, int logical_width, int physical_width)
 648 {
 649         ext2_extent_handle_t    handle;
 650         struct ext2fs_extent    extent;
 651         struct ext2_extent_info info;
 652         int                     op = EXT2_EXTENT_ROOT;
 653         unsigned int            printed = 0;
 654         errcode_t               errcode;
 655
 656         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 657         if (errcode)
 658                 return;
 659
 660         if (flags & DUMP_EXTENT_TABLE)
 661                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 662                         (logical_width*2)+3, "Logical",
 663                         (physical_width*2)+3, "Physical");
 664         else
 665                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 666
 667         while (1) {
 668                 errcode = ext2fs_extent_get(handle, op, &extent);
 669
 670                 if (errcode)
 671                         break;
 672
 673                 op = EXT2_EXTENT_NEXT;
 674
 675                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 676                         continue;
 677
 678                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 679                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 680                                 continue;
 681                 } else {
 682                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 683                                 continue;
 684                 }
 685
 686                 errcode = ext2fs_extent_get_info(handle, &info);
 687                 if (errcode)
 688                         continue;
 689
 690                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 691                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 692                                 continue;
 693
 694                         if (flags & DUMP_EXTENT_TABLE) {
 695                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 696                                         "%*llu%*s %6u\n",
 697                                         info.curr_level, info.max_depth,
 698                                         info.curr_entry, info.num_entries,
 699                                         logical_width,
 700                                         extent.e_lblk,
 701                                         logical_width,
 702                                         extent.e_lblk + (extent.e_len - 1),
 703                                         physical_width,
 704                                         extent.e_pblk,
 705                                         physical_width+3, "", extent.e_len);
 706                                 continue;
 707                         }
 708
 709                         fprintf(f, "%s(ETB%d):%lld",
 710                                 printed ? ", " : "", info.curr_level,
 711                                 extent.e_pblk);
 712                         printed = 1;
 713                         continue;
 714                 }
 715
 716                 if (flags & DUMP_EXTENT_TABLE) {
 717                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 718                                 "%*llu - %*llu %6u %s\n",
 719                                 info.curr_level, info.max_depth,
 720                                 info.curr_entry, info.num_entries,
 721                                 logical_width,
 722                                 extent.e_lblk,
 723                                 logical_width,
 724                                 extent.e_lblk + (extent.e_len - 1),
 725                                 physical_width,
 726                                 extent.e_pblk,
 727                                 physical_width,
 728                                 extent.e_pblk + (extent.e_len - 1),
 729                                 extent.e_len,
 730                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 731                                         "Uninit" : "");
 732                         continue;
 733                 }
 734
 735                 if (extent.e_len == 0)
 736                         continue;
 737                 else if (extent.e_len == 1)
 738                         fprintf(f,
 739                                 "%s(%lld%s):%lld",
 740                                 printed ? ", " : "",
 741                                 extent.e_lblk,
 742                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 743                                 "[u]" : "",
 744                                 extent.e_pblk);
 745                 else
 746                         fprintf(f,
 747                                 "%s(%lld-%lld%s):%lld-%lld",
 748                                 printed ? ", " : "",
 749                                 extent.e_lblk,
 750                                 extent.e_lblk + (extent.e_len - 1),
 751                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 752                                         "[u]" : "",
 753                                 extent.e_pblk,
 754                                 extent.e_pblk + (extent.e_len - 1));
 755                 printed = 1;
 756         }
 757         if (printed)
 758                 fprintf(f, "\n");
 759         ext2fs_extent_free(handle);
 760 }
 761
 762 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 763 {
 764         errcode_t retval;
 765         size_t size;
 766
 767         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 768         if (!retval)
 769                 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
 770 }
 771
 772 static void dump_inline_symlink(FILE *out, ext2_ino_t inode_num,
 773                                 struct ext2_inode *inode, const char *prefix)
 774 {
 775         errcode_t retval;
 776         char *buf = NULL;
 777         size_t size;
 778
 779         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 780         if (retval)
 781                 goto out;
 782
 783         retval = ext2fs_get_memzero(size + 1, &buf);
 784         if (retval)
 785                 goto out;
 786
 787         retval = ext2fs_inline_data_get(current_fs, inode_num,
 788                                         inode, buf, &size);
 789         if (retval)
 790                 goto out;
 791
 792         fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 793                 (int)size, buf);
 794 out:
 795         if (buf)
 796                 ext2fs_free_mem(&buf);
 797         if (retval)
 798                 com_err(__func__, retval, "while dumping link destination");
 799 }
 800
 801 void internal_dump_inode(FILE *out, const char *prefix,
 802                          ext2_ino_t inode_num, struct ext2_inode *inode,
 803                          int do_dump_blocks)
 804 {
 805         const char *i_type;
 806         char frag, fsize;
 807         int os = current_fs->super->s_creator_os;
 808         struct ext2_inode_large *large_inode;
 809         int is_large_inode = 0;
 810
 811         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 812                 is_large_inode = 1;
 813         large_inode = (struct ext2_inode_large *) inode;
 814
 815         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 816         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 817         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 818         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 819         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 820         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 821         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 822         else i_type = "bad type";
 823         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 824         fprintf(out, "%sMode:  0%03o   Flags: 0x%x\n",
 825                 prefix, inode->i_mode & 07777, inode->i_flags);
 826         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 827                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 828                         prefix, inode->i_generation, large_inode->i_version_hi,
 829                         inode->osd1.linux1.l_i_version);
 830         } else {
 831                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 832                         inode->i_generation, inode->osd1.linux1.l_i_version);
 833         }
 834         fprintf(out, "%sUser: %5d   Group: %5d",
 835                 prefix, inode_uid(*inode), inode_gid(*inode));
 836         if (is_large_inode && large_inode->i_extra_isize >= 32)
 837                 fprintf(out, "   Project: %5d", large_inode->i_projid);
 838         fputs("   Size: ", out);
 839         if (LINUX_S_ISREG(inode->i_mode))
 840                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 841         else
 842                 fprintf(out, "%d\n", inode->i_size);
 843         if (os == EXT2_OS_HURD)
 844                 fprintf(out,
 845                         "%sFile ACL: %d Translator: %d\n",
 846                         prefix,
 847                         inode->i_file_acl,
 848                         inode->osd1.hurd1.h_i_translator);
 849         else
 850                 fprintf(out, "%sFile ACL: %llu\n",
 851                         prefix,
 852                         inode->i_file_acl | ((long long)
 853                                 (inode->osd2.linux2.l_i_file_acl_high) << 32));
 854         if (os != EXT2_OS_HURD)
 855                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 856                         prefix, inode->i_links_count,
 857                         (((unsigned long long)
 858                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 859                         inode->i_blocks);
 860         else
 861                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 862                         prefix, inode->i_links_count, inode->i_blocks);
 863         switch (os) {
 864             case EXT2_OS_HURD:
 865                 frag = inode->osd2.hurd2.h_i_frag;
 866                 fsize = inode->osd2.hurd2.h_i_fsize;
 867                 break;
 868             default:
 869                 frag = fsize = 0;
 870         }
 871         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 872                 prefix, inode->i_faddr, frag, fsize);
 873         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 874                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 875                         inode->i_ctime, large_inode->i_ctime_extra,
 876                         inode_time_to_string(inode->i_ctime,
 877                                              large_inode->i_ctime_extra));
 878                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 879                         inode->i_atime, large_inode->i_atime_extra,
 880                         inode_time_to_string(inode->i_atime,
 881                                              large_inode->i_atime_extra));
 882                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 883                         inode->i_mtime, large_inode->i_mtime_extra,
 884                         inode_time_to_string(inode->i_mtime,
 885                                              large_inode->i_mtime_extra));
 886                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 887                         large_inode->i_crtime, large_inode->i_crtime_extra,
 888                         inode_time_to_string(large_inode->i_crtime,
 889                                              large_inode->i_crtime_extra));
 890                 if (inode->i_dtime)
 891                         fprintf(out, "%s dtime: 0x%08x:(%08x) -- %s", prefix,
 892                                 large_inode->i_dtime, large_inode->i_ctime_extra,
 893                                 inode_time_to_string(inode->i_dtime,
 894                                                      large_inode->i_ctime_extra));
 895         } else {
 896                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 897                         time_to_string((__s32) inode->i_ctime));
 898                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 899                         time_to_string((__s32) inode->i_atime));
 900                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 901                         time_to_string((__s32) inode->i_mtime));
 902                 if (inode->i_dtime)
 903                         fprintf(out, "%sdtime: 0x%08x -- %s", prefix,
 904                                 inode->i_dtime,
 905                                 time_to_string((__s32) inode->i_dtime));
 906         }
 907         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 908                 internal_dump_inode_extra(out, prefix, inode_num,
 909                                           (struct ext2_inode_large *) inode);
 910         dump_inode_attributes(out, inode_num);
 911         if (ext2fs_has_feature_metadata_csum(current_fs->super)) {
 912                 __u32 crc = inode->i_checksum_lo;
 913                 if (is_large_inode &&
 914                     large_inode->i_extra_isize >=
 915                                 (offsetof(struct ext2_inode_large,
 916                                           i_checksum_hi) -
 917                                  EXT2_GOOD_OLD_INODE_SIZE))
 918                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 919                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 920         }
 921
 922         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_is_fast_symlink(inode))
 923                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 924                         (int)EXT2_I_SIZE(inode), (char *)inode->i_block);
 925         else if (LINUX_S_ISLNK(inode->i_mode) &&
 926                    (inode->i_flags & EXT4_INLINE_DATA_FL))
 927                 dump_inline_symlink(out, inode_num, inode, prefix);
 928         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 929                 int major, minor;
 930                 const char *devnote;
 931
 932                 if (inode->i_block[0]) {
 933                         major = (inode->i_block[0] >> 8) & 255;
 934                         minor = inode->i_block[0] & 255;
 935                         devnote = "";
 936                 } else {
 937                         major = (inode->i_block[1] & 0xfff00) >> 8;
 938                         minor = ((inode->i_block[1] & 0xff) |
 939                                  ((inode->i_block[1] >> 12) & 0xfff00));
 940                         devnote = "(New-style) ";
 941                 }
 942                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 943                         devnote, major, minor, major, minor);
 944         } else if (do_dump_blocks) {
 945                 if (inode->i_flags & EXT4_EXTENTS_FL)
 946                         dump_extents(out, prefix, inode_num,
 947                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 948                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 949                         dump_inline_data(out, prefix, inode_num);
 950                 else
 951                         dump_blocks(out, prefix, inode_num);
 952         }
 953 }
 954
 955 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 956 {
 957         FILE    *out;
 958
 959         out = open_pager();
 960         internal_dump_inode(out, "", inode_num, inode, 1);
 961         close_pager(out);
 962 }
 963
 964 void do_stat(int argc, char *argv[])
 965 {
 966         ext2_ino_t      inode;
 967         struct ext2_inode * inode_buf;
 968
 969         if (check_fs_open(argv[0]))
 970                 return;
 971
 972         inode_buf = (struct ext2_inode *)
 973                         malloc(EXT2_INODE_SIZE(current_fs->super));
 974         if (!inode_buf) {
 975                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 976                 return;
 977         }
 978
 979         if (common_inode_args_process(argc, argv, &inode, 0)) {
 980                 free(inode_buf);
 981                 return;
 982         }
 983
 984         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 985                                         EXT2_INODE_SIZE(current_fs->super))) {
 986                 free(inode_buf);
 987                 return;
 988         }
 989
 990         dump_inode(inode, inode_buf);
 991         free(inode_buf);
 992         return;
 993 }
 994
 995 void do_dump_extents(int argc, char **argv)
 996 {
 997         struct ext2_inode inode;
 998         ext2_ino_t      ino;
 999         FILE            *out;
1000         int             c, flags = 0;
1001         int             logical_width;
1002         int             physical_width;
1003
1004         reset_getopt();
1005         while ((c = getopt(argc, argv, "nl")) != EOF) {
1006                 switch (c) {
1007                 case 'n':
1008                         flags |= DUMP_NODE_EXTENTS;
1009                         break;
1010                 case 'l':
1011                         flags |= DUMP_LEAF_EXTENTS;
1012                         break;
1013                 }
1014         }
1015
1016         if (argc != optind + 1) {
1017                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
1018                 return;
1019         }
1020
1021         if (flags == 0)
1022                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
1023         flags |= DUMP_EXTENT_TABLE;
1024
1025         if (check_fs_open(argv[0]))
1026                 return;
1027
1028         ino = string_to_inode(argv[optind]);
1029         if (ino == 0)
1030                 return;
1031
1032         if (debugfs_read_inode(ino, &inode, argv[0]))
1033                 return;
1034
1035         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
1036                 fprintf(stderr, "%s: does not uses extent block maps\n",
1037                         argv[optind]);
1038                 return;
1039         }
1040
1041         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
1042                                   current_fs->blocksize) + 1;
1043         if (logical_width < 5)
1044                 logical_width = 5;
1045         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
1046         if (physical_width < 5)
1047                 physical_width = 5;
1048
1049         out = open_pager();
1050         dump_extents(out, "", ino, flags, logical_width, physical_width);
1051         close_pager(out);
1052         return;
1053 }
1054
1055 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
1056                              blk64_t *blocknr,
1057                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1058                              blk64_t ref_block EXT2FS_ATTR((unused)),
1059                              int ref_offset EXT2FS_ATTR((unused)),
1060                              void *private EXT2FS_ATTR((unused)))
1061 {
1062         printf("%llu ", *blocknr);
1063         return 0;
1064 }
1065
1066 void do_blocks(int argc, char *argv[])
1067 {
1068         ext2_ino_t      inode;
1069
1070         if (check_fs_open(argv[0]))
1071                 return;
1072
1073         if (common_inode_args_process(argc, argv, &inode, 0)) {
1074                 return;
1075         }
1076
1077         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1078                               print_blocks_proc, NULL);
1079         fputc('\n', stdout);
1080         return;
1081 }
1082
1083 void do_chroot(int argc, char *argv[])
1084 {
1085         ext2_ino_t inode;
1086         int retval;
1087
1088         if (common_inode_args_process(argc, argv, &inode, 0))
1089                 return;
1090
1091         retval = ext2fs_check_directory(current_fs, inode);
1092         if (retval)  {
1093                 com_err(argv[1], retval, 0);
1094                 return;
1095         }
1096         root = inode;
1097 }
1098
1099 #ifndef READ_ONLY
1100 void do_clri(int argc, char *argv[])
1101 {
1102         ext2_ino_t inode;
1103         struct ext2_inode inode_buf;
1104
1105         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1106                 return;
1107
1108         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1109                 return;
1110         memset(&inode_buf, 0, sizeof(inode_buf));
1111         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1112                 return;
1113 }
1114
1115 void do_freei(int argc, char *argv[])
1116 {
1117         unsigned int    len = 1;
1118         int             err = 0;
1119         ext2_ino_t      inode;
1120
1121         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1122                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1123                 return;
1124         if (check_fs_read_write(argv[0]))
1125                 return;
1126
1127         inode = string_to_inode(argv[1]);
1128         if (!inode)
1129                 return;
1130
1131         if (argc == 3) {
1132                 len = parse_ulong(argv[2], argv[0], "length", &err);
1133                 if (err)
1134                         return;
1135         }
1136
1137         if (len == 1 &&
1138             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1139                 com_err(argv[0], 0, "Warning: inode already clear");
1140         while (len-- > 0)
1141                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1142         ext2fs_mark_ib_dirty(current_fs);
1143 }
1144
1145 void do_seti(int argc, char *argv[])
1146 {
1147         unsigned int    len = 1;
1148         int             err = 0;
1149         ext2_ino_t      inode;
1150
1151         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1152                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1153                 return;
1154         if (check_fs_read_write(argv[0]))
1155                 return;
1156
1157         inode = string_to_inode(argv[1]);
1158         if (!inode)
1159                 return;
1160
1161         if (argc == 3) {
1162                 len = parse_ulong(argv[2], argv[0], "length", &err);
1163                 if (err)
1164                         return;
1165         }
1166
1167         if ((len == 1) &&
1168             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1169                 com_err(argv[0], 0, "Warning: inode already set");
1170         while (len-- > 0)
1171                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1172         ext2fs_mark_ib_dirty(current_fs);
1173 }
1174 #endif /* READ_ONLY */
1175
1176 void do_testi(int argc, char *argv[])
1177 {
1178         ext2_ino_t inode;
1179
1180         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1181                 return;
1182
1183         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1184                 printf("Inode %u is marked in use\n", inode);
1185         else
1186                 printf("Inode %u is not in use\n", inode);
1187 }
1188
1189 #ifndef READ_ONLY
1190 void do_freeb(int argc, char *argv[])
1191 {
1192         blk64_t block;
1193         blk64_t count = 1;
1194
1195         if (common_block_args_process(argc, argv, &block, &count))
1196                 return;
1197         if (check_fs_read_write(argv[0]))
1198                 return;
1199         while (count-- > 0) {
1200                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1201                         com_err(argv[0], 0, "Warning: block %llu already clear",
1202                                 block);
1203                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1204                 block++;
1205         }
1206         ext2fs_mark_bb_dirty(current_fs);
1207 }
1208
1209 void do_setb(int argc, char *argv[])
1210 {
1211         blk64_t block;
1212         blk64_t count = 1;
1213
1214         if (common_block_args_process(argc, argv, &block, &count))
1215                 return;
1216         if (check_fs_read_write(argv[0]))
1217                 return;
1218         while (count-- > 0) {
1219                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1220                         com_err(argv[0], 0, "Warning: block %llu already set",
1221                                 block);
1222                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1223                 block++;
1224         }
1225         ext2fs_mark_bb_dirty(current_fs);
1226 }
1227 #endif /* READ_ONLY */
1228
1229 void do_testb(int argc, char *argv[])
1230 {
1231         blk64_t block;
1232         blk64_t count = 1;
1233
1234         if (common_block_args_process(argc, argv, &block, &count))
1235                 return;
1236         while (count-- > 0) {
1237                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1238                         printf("Block %llu marked in use\n", block);
1239                 else
1240                         printf("Block %llu not in use\n", block);
1241                 block++;
1242         }
1243 }
1244
1245 #ifndef READ_ONLY
1246 static void modify_u8(char *com, const char *prompt,
1247                       const char *format, __u8 *val)
1248 {
1249         char buf[200];
1250         unsigned long v;
1251         char *tmp;
1252
1253         sprintf(buf, format, *val);
1254         printf("%30s    [%s] ", prompt, buf);
1255         if (!fgets(buf, sizeof(buf), stdin))
1256                 return;
1257         if (buf[strlen (buf) - 1] == '\n')
1258                 buf[strlen (buf) - 1] = '\0';
1259         if (!buf[0])
1260                 return;
1261         v = strtoul(buf, &tmp, 0);
1262         if (*tmp)
1263                 com_err(com, 0, "Bad value - %s", buf);
1264         else
1265                 *val = v;
1266 }
1267
1268 static void modify_u16(char *com, const char *prompt,
1269                        const char *format, __u16 *val)
1270 {
1271         char buf[200];
1272         unsigned long v;
1273         char *tmp;
1274
1275         sprintf(buf, format, *val);
1276         printf("%30s    [%s] ", prompt, buf);
1277         if (!fgets(buf, sizeof(buf), stdin))
1278                 return;
1279         if (buf[strlen (buf) - 1] == '\n')
1280                 buf[strlen (buf) - 1] = '\0';
1281         if (!buf[0])
1282                 return;
1283         v = strtoul(buf, &tmp, 0);
1284         if (*tmp)
1285                 com_err(com, 0, "Bad value - %s", buf);
1286         else
1287                 *val = v;
1288 }
1289
1290 static void modify_u32(char *com, const char *prompt,
1291                        const char *format, __u32 *val)
1292 {
1293         char buf[200];
1294         unsigned long v;
1295         char *tmp;
1296
1297         sprintf(buf, format, *val);
1298         printf("%30s    [%s] ", prompt, buf);
1299         if (!fgets(buf, sizeof(buf), stdin))
1300                 return;
1301         if (buf[strlen (buf) - 1] == '\n')
1302                 buf[strlen (buf) - 1] = '\0';
1303         if (!buf[0])
1304                 return;
1305         v = strtoul(buf, &tmp, 0);
1306         if (*tmp)
1307                 com_err(com, 0, "Bad value - %s", buf);
1308         else
1309                 *val = v;
1310 }
1311
1312
1313 void do_modify_inode(int argc, char *argv[])
1314 {
1315         struct ext2_inode inode;
1316         ext2_ino_t      inode_num;
1317         int             i;
1318         unsigned char   *frag, *fsize;
1319         char            buf[80];
1320         int             os;
1321         const char      *hex_format = "0x%x";
1322         const char      *octal_format = "0%o";
1323         const char      *decimal_format = "%d";
1324         const char      *unsignedlong_format = "%lu";
1325
1326         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1327                 return;
1328
1329         os = current_fs->super->s_creator_os;
1330
1331         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1332                 return;
1333
1334         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1335         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1336         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1337         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1338         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1339         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1340         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1341         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1342         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1343         if (os == EXT2_OS_LINUX)
1344                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1345                            &inode.osd2.linux2.l_i_blocks_hi);
1346         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1347         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1348         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1349 #if 0
1350         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1351 #endif
1352         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1353
1354         modify_u32(argv[0], "High 32bits of size", decimal_format,
1355                    &inode.i_size_high);
1356
1357         if (os == EXT2_OS_HURD)
1358                 modify_u32(argv[0], "Translator Block",
1359                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1360
1361         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1362         switch (os) {
1363             case EXT2_OS_HURD:
1364                 frag = &inode.osd2.hurd2.h_i_frag;
1365                 fsize = &inode.osd2.hurd2.h_i_fsize;
1366                 break;
1367             default:
1368                 frag = fsize = 0;
1369         }
1370         if (frag)
1371                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1372         if (fsize)
1373                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1374
1375         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1376                 sprintf(buf, "Direct Block #%d", i);
1377                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1378         }
1379         modify_u32(argv[0], "Indirect Block", decimal_format,
1380                     &inode.i_block[EXT2_IND_BLOCK]);
1381         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1382                     &inode.i_block[EXT2_DIND_BLOCK]);
1383         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1384                     &inode.i_block[EXT2_TIND_BLOCK]);
1385         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1386                 return;
1387 }
1388 #endif /* READ_ONLY */
1389
1390 void do_change_working_dir(int argc, char *argv[])
1391 {
1392         ext2_ino_t      inode;
1393         int             retval;
1394
1395         if (common_inode_args_process(argc, argv, &inode, 0))
1396                 return;
1397
1398         retval = ext2fs_check_directory(current_fs, inode);
1399         if (retval) {
1400                 com_err(argv[1], retval, 0);
1401                 return;
1402         }
1403         cwd = inode;
1404         return;
1405 }
1406
1407 void do_print_working_directory(int argc, char *argv[])
1408 {
1409         int     retval;
1410         char    *pathname = NULL;
1411
1412         if (common_args_process(argc, argv, 1, 1,
1413                                 "print_working_directory", "", 0))
1414                 return;
1415
1416         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1417         if (retval) {
1418                 com_err(argv[0], retval,
1419                         "while trying to get pathname of cwd");
1420         }
1421         printf("[pwd]   INODE: %6u  PATH: %s\n",
1422                cwd, pathname ? pathname : "NULL");
1423         if (pathname) {
1424                 free(pathname);
1425                 pathname = NULL;
1426         }
1427         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1428         if (retval) {
1429                 com_err(argv[0], retval,
1430                         "while trying to get pathname of root");
1431         }
1432         printf("[root]  INODE: %6u  PATH: %s\n",
1433                root, pathname ? pathname : "NULL");
1434         if (pathname) {
1435                 free(pathname);
1436                 pathname = NULL;
1437         }
1438         return;
1439 }
1440
1441 #ifndef READ_ONLY
1442 static void make_link(char *sourcename, char *destname)
1443 {
1444         ext2_ino_t      ino;
1445         struct ext2_inode inode;
1446         int             retval;
1447         ext2_ino_t      dir;
1448         char            *dest, *cp, *base_name;
1449
1450         /*
1451          * Get the source inode
1452          */
1453         ino = string_to_inode(sourcename);
1454         if (!ino)
1455                 return;
1456         base_name = strrchr(sourcename, '/');
1457         if (base_name)
1458                 base_name++;
1459         else
1460                 base_name = sourcename;
1461         /*
1462          * Figure out the destination.  First see if it exists and is
1463          * a directory.
1464          */
1465         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1466                 dest = base_name;
1467         else {
1468                 /*
1469                  * OK, it doesn't exist.  See if it is
1470                  * '<dir>/basename' or 'basename'
1471                  */
1472                 cp = strrchr(destname, '/');
1473                 if (cp) {
1474                         *cp = 0;
1475                         dir = string_to_inode(destname);
1476                         if (!dir)
1477                                 return;
1478                         dest = cp+1;
1479                 } else {
1480                         dir = cwd;
1481                         dest = destname;
1482                 }
1483         }
1484
1485         if (debugfs_read_inode(ino, &inode, sourcename))
1486                 return;
1487
1488         retval = ext2fs_link(current_fs, dir, dest, ino,
1489                              ext2_file_type(inode.i_mode));
1490         if (retval)
1491                 com_err("make_link", retval, 0);
1492         return;
1493 }
1494
1495
1496 void do_link(int argc, char *argv[])
1497 {
1498         if (common_args_process(argc, argv, 3, 3, "link",
1499                                 "<source file> <dest_name>", CHECK_FS_RW))
1500                 return;
1501
1502         make_link(argv[1], argv[2]);
1503 }
1504
1505 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1506                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1507                             blk64_t ref_block EXT2FS_ATTR((unused)),
1508                             int ref_offset EXT2FS_ATTR((unused)),
1509                             void *private EXT2FS_ATTR((unused)))
1510 {
1511         blk64_t block;
1512
1513         block = *blocknr;
1514         ext2fs_block_alloc_stats2(fs, block, +1);
1515         return 0;
1516 }
1517
1518 void do_undel(int argc, char *argv[])
1519 {
1520         ext2_ino_t      ino;
1521         struct ext2_inode inode;
1522
1523         if (common_args_process(argc, argv, 2, 3, "undelete",
1524                                 "<inode_num> [dest_name]",
1525                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1526                 return;
1527
1528         ino = string_to_inode(argv[1]);
1529         if (!ino)
1530                 return;
1531
1532         if (debugfs_read_inode(ino, &inode, argv[1]))
1533                 return;
1534
1535         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1536                 com_err(argv[1], 0, "Inode is not marked as deleted");
1537                 return;
1538         }
1539
1540         /*
1541          * XXX this function doesn't handle changing the links count on the
1542          * parent directory when undeleting a directory.
1543          */
1544         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1545         inode.i_dtime = 0;
1546
1547         if (debugfs_write_inode(ino, &inode, argv[0]))
1548                 return;
1549
1550         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1551                               mark_blocks_proc, NULL);
1552
1553         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1554
1555         if (argc > 2)
1556                 make_link(argv[1], argv[2]);
1557 }
1558
1559 static void unlink_file_by_name(char *filename)
1560 {
1561         int             retval;
1562         ext2_ino_t      dir;
1563         char            *base_name;
1564
1565         base_name = strrchr(filename, '/');
1566         if (base_name) {
1567                 *base_name++ = '\0';
1568                 dir = string_to_inode(filename);
1569                 if (!dir)
1570                         return;
1571         } else {
1572                 dir = cwd;
1573                 base_name = filename;
1574         }
1575         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1576         if (retval)
1577                 com_err("unlink_file_by_name", retval, 0);
1578         return;
1579 }
1580
1581 void do_unlink(int argc, char *argv[])
1582 {
1583         if (common_args_process(argc, argv, 2, 2, "link",
1584                                 "<pathname>", CHECK_FS_RW))
1585                 return;
1586
1587         unlink_file_by_name(argv[1]);
1588 }
1589
1590 void do_copy_inode(int argc, char *argv[])
1591 {
1592         ext2_ino_t      src_ino, dest_ino;
1593         unsigned char   buf[4096];
1594
1595         if (common_args_process(argc, argv, 3, 3, "copy_inode",
1596                                 "<source file> <dest_name>", CHECK_FS_RW))
1597                 return;
1598
1599         src_ino = string_to_inode(argv[1]);
1600         if (!src_ino)
1601                 return;
1602
1603         dest_ino = string_to_inode(argv[2]);
1604         if (!dest_ino)
1605                 return;
1606
1607         if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
1608                                     argv[0], sizeof(buf)))
1609                 return;
1610
1611         if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
1612                                      argv[0], sizeof(buf)))
1613                 return;
1614 }
1615
1616 #endif /* READ_ONLY */
1617
1618 void do_find_free_block(int argc, char *argv[])
1619 {
1620         blk64_t free_blk, goal, first_free = 0;
1621         int             count;
1622         errcode_t       retval;
1623         char            *tmp;
1624
1625         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1626                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1627                 return;
1628         }
1629         if (check_fs_open(argv[0]))
1630                 return;
1631
1632         if (argc > 1) {
1633                 count = strtol(argv[1],&tmp,0);
1634                 if (*tmp) {
1635                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1636                         return;
1637                 }
1638         } else
1639                 count = 1;
1640
1641         if (argc > 2) {
1642                 goal = strtol(argv[2], &tmp, 0);
1643                 if (*tmp) {
1644                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1645                         return;
1646                 }
1647         }
1648         else
1649                 goal = current_fs->super->s_first_data_block;
1650
1651         printf("Free blocks found: ");
1652         free_blk = goal - 1;
1653         while (count-- > 0) {
1654                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1655                                            &free_blk);
1656                 if (first_free) {
1657                         if (first_free == free_blk)
1658                                 break;
1659                 } else
1660                         first_free = free_blk;
1661                 if (retval) {
1662                         com_err("ext2fs_new_block", retval, 0);
1663                         return;
1664                 } else
1665                         printf("%llu ", free_blk);
1666         }
1667         printf("\n");
1668 }
1669
1670 void do_find_free_inode(int argc, char *argv[])
1671 {
1672         ext2_ino_t      free_inode, dir;
1673         int             mode;
1674         int             retval;
1675         char            *tmp;
1676
1677         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1678                 com_err(argv[0], 0, "Usage: find_free_inode [dir [mode]]");
1679                 return;
1680         }
1681         if (check_fs_open(argv[0]))
1682                 return;
1683
1684         if (argc > 1) {
1685                 dir = strtol(argv[1], &tmp, 0);
1686                 if (*tmp) {
1687                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1688                         return;
1689                 }
1690         }
1691         else
1692                 dir = root;
1693         if (argc > 2) {
1694                 mode = strtol(argv[2], &tmp, 0);
1695                 if (*tmp) {
1696                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1697                         return;
1698                 }
1699         } else
1700                 mode = 010755;
1701
1702         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1703         if (retval)
1704                 com_err("ext2fs_new_inode", retval, 0);
1705         else
1706                 printf("Free inode found: %u\n", free_inode);
1707 }
1708
1709 #ifndef READ_ONLY
1710 void do_write(int argc, char *argv[])
1711 {
1712         errcode_t       retval;
1713
1714         if (common_args_process(argc, argv, 3, 3, "write",
1715                                 "<native file> <new file>", CHECK_FS_RW))
1716                 return;
1717
1718         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1719         if (retval)
1720                 com_err(argv[0], retval, 0);
1721 }
1722
1723 void do_mknod(int argc, char *argv[])
1724 {
1725         unsigned long   major, minor;
1726         errcode_t       retval;
1727         int             nr;
1728         struct stat     st;
1729
1730         if (check_fs_open(argv[0]))
1731                 return;
1732         if (argc < 3 || argv[2][1]) {
1733         usage:
1734                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1735                 return;
1736         }
1737
1738         minor = major = 0;
1739         switch (argv[2][0]) {
1740                 case 'p':
1741                         st.st_mode = S_IFIFO;
1742                         nr = 3;
1743                         break;
1744                 case 'c':
1745                         st.st_mode = S_IFCHR;
1746                         nr = 5;
1747                         break;
1748                 case 'b':
1749                         st.st_mode = S_IFBLK;
1750                         nr = 5;
1751                         break;
1752                 default:
1753                         nr = 0;
1754         }
1755
1756         if (nr == 5) {
1757                 major = strtoul(argv[3], argv+3, 0);
1758                 minor = strtoul(argv[4], argv+4, 0);
1759                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1760                         nr = 0;
1761         }
1762
1763         if (argc != nr)
1764                 goto usage;
1765
1766         st.st_rdev = makedev(major, minor);
1767         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1768         if (retval)
1769                 com_err(argv[0], retval, 0);
1770 }
1771
1772 void do_mkdir(int argc, char *argv[])
1773 {
1774         errcode_t retval;
1775
1776         if (common_args_process(argc, argv, 2, 2, "mkdir",
1777                                 "<filename>", CHECK_FS_RW))
1778                 return;
1779
1780         retval = do_mkdir_internal(current_fs, cwd, argv[1], root);
1781         if (retval)
1782                 com_err(argv[0], retval, 0);
1783
1784 }
1785
1786 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1787                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1788                                blk64_t ref_block EXT2FS_ATTR((unused)),
1789                                int ref_offset EXT2FS_ATTR((unused)),
1790                                void *private)
1791 {
1792         blk64_t block = *blocknr;
1793         blk64_t *last_cluster = (blk64_t *)private;
1794         blk64_t cluster = EXT2FS_B2C(fs, block);
1795
1796         if (cluster == *last_cluster)
1797                 return 0;
1798
1799         *last_cluster = cluster;
1800
1801         ext2fs_block_alloc_stats2(fs, block, -1);
1802         return 0;
1803 }
1804
1805 static void kill_file_by_inode(ext2_ino_t inode)
1806 {
1807         struct ext2_inode inode_buf;
1808
1809         if (debugfs_read_inode(inode, &inode_buf, 0))
1810                 return;
1811         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1812         if (debugfs_write_inode(inode, &inode_buf, 0))
1813                 return;
1814         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1815                 blk64_t last_cluster = 0;
1816                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1817                                       NULL, release_blocks_proc, &last_cluster);
1818         }
1819         printf("\n");
1820         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1821                                   LINUX_S_ISDIR(inode_buf.i_mode));
1822 }
1823
1824
1825 void do_kill_file(int argc, char *argv[])
1826 {
1827         ext2_ino_t inode_num;
1828
1829         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1830                 return;
1831
1832         kill_file_by_inode(inode_num);
1833 }
1834
1835 void do_rm(int argc, char *argv[])
1836 {
1837         int retval;
1838         ext2_ino_t inode_num;
1839         struct ext2_inode inode;
1840
1841         if (common_args_process(argc, argv, 2, 2, "rm",
1842                                 "<filename>", CHECK_FS_RW))
1843                 return;
1844
1845         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1846         if (retval) {
1847                 com_err(argv[0], retval, "while trying to resolve filename");
1848                 return;
1849         }
1850
1851         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1852                 return;
1853
1854         if (LINUX_S_ISDIR(inode.i_mode)) {
1855                 com_err(argv[0], 0, "file is a directory");
1856                 return;
1857         }
1858
1859         --inode.i_links_count;
1860         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1861                 return;
1862
1863         unlink_file_by_name(argv[1]);
1864         if (inode.i_links_count == 0)
1865                 kill_file_by_inode(inode_num);
1866 }
1867
1868 struct rd_struct {
1869         ext2_ino_t      parent;
1870         int             empty;
1871 };
1872
1873 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1874                       int       entry EXT2FS_ATTR((unused)),
1875                       struct ext2_dir_entry *dirent,
1876                       int       offset EXT2FS_ATTR((unused)),
1877                       int       blocksize EXT2FS_ATTR((unused)),
1878                       char      *buf EXT2FS_ATTR((unused)),
1879                       void      *private)
1880 {
1881         struct rd_struct *rds = (struct rd_struct *) private;
1882
1883         if (dirent->inode == 0)
1884                 return 0;
1885         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1886                 return 0;
1887         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1888             (dirent->name[1] == '.')) {
1889                 rds->parent = dirent->inode;
1890                 return 0;
1891         }
1892         rds->empty = 0;
1893         return 0;
1894 }
1895
1896 void do_rmdir(int argc, char *argv[])
1897 {
1898         int retval;
1899         ext2_ino_t inode_num;
1900         struct ext2_inode inode;
1901         struct rd_struct rds;
1902
1903         if (common_args_process(argc, argv, 2, 2, "rmdir",
1904                                 "<filename>", CHECK_FS_RW))
1905                 return;
1906
1907         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1908         if (retval) {
1909                 com_err(argv[0], retval, "while trying to resolve filename");
1910                 return;
1911         }
1912
1913         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1914                 return;
1915
1916         if (!LINUX_S_ISDIR(inode.i_mode)) {
1917                 com_err(argv[0], 0, "file is not a directory");
1918                 return;
1919         }
1920
1921         rds.parent = 0;
1922         rds.empty = 1;
1923
1924         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1925                                     0, rmdir_proc, &rds);
1926         if (retval) {
1927                 com_err(argv[0], retval, "while iterating over directory");
1928                 return;
1929         }
1930         if (rds.empty == 0) {
1931                 com_err(argv[0], 0, "directory not empty");
1932                 return;
1933         }
1934
1935         inode.i_links_count = 0;
1936         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1937                 return;
1938
1939         unlink_file_by_name(argv[1]);
1940         kill_file_by_inode(inode_num);
1941
1942         if (rds.parent) {
1943                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1944                         return;
1945                 if (inode.i_links_count > 1)
1946                         inode.i_links_count--;
1947                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1948                         return;
1949         }
1950 }
1951 #endif /* READ_ONLY */
1952
1953 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1954                             char *argv[] EXT2FS_ATTR((unused)))
1955 {
1956         if (current_fs)
1957                 printf("Open mode: read-%s\n",
1958                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1959         printf("Filesystem in use: %s\n",
1960                current_fs ? current_fs->device_name : "--none--");
1961 }
1962
1963 #ifndef READ_ONLY
1964 void do_expand_dir(int argc, char *argv[])
1965 {
1966         ext2_ino_t inode;
1967         int retval;
1968
1969         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1970                 return;
1971
1972         retval = ext2fs_expand_dir(current_fs, inode);
1973         if (retval)
1974                 com_err("ext2fs_expand_dir", retval, 0);
1975         return;
1976 }
1977
1978 void do_features(int argc, char *argv[])
1979 {
1980         int     i;
1981
1982         if (check_fs_open(argv[0]))
1983                 return;
1984
1985         if ((argc != 1) && check_fs_read_write(argv[0]))
1986                 return;
1987         for (i=1; i < argc; i++) {
1988                 if (e2p_edit_feature(argv[i],
1989                                      &current_fs->super->s_feature_compat, 0))
1990                         com_err(argv[0], 0, "Unknown feature: %s\n",
1991                                 argv[i]);
1992                 else
1993                         ext2fs_mark_super_dirty(current_fs);
1994         }
1995         print_features(current_fs->super, stdout);
1996 }
1997 #endif /* READ_ONLY */
1998
1999 void do_bmap(int argc, char *argv[])
2000 {
2001         ext2_ino_t      ino;
2002         blk64_t         blk, pblk = 0;
2003         int             c, err, flags = 0, ret_flags = 0;
2004         errcode_t       errcode;
2005
2006         if (check_fs_open(argv[0]))
2007                 return;
2008
2009         reset_getopt();
2010         while ((c = getopt (argc, argv, "a")) != EOF) {
2011                 switch (c) {
2012                 case 'a':
2013                         flags |= BMAP_ALLOC;
2014                         break;
2015                 default:
2016                         goto print_usage;
2017                 }
2018         }
2019
2020         if (argc <= optind+1) {
2021         print_usage:
2022                 com_err(0, 0,
2023                         "Usage: bmap [-a] <file> logical_blk [physical_blk]");
2024                 return;
2025         }
2026
2027         ino = string_to_inode(argv[optind++]);
2028         if (!ino)
2029                 return;
2030         err = strtoblk(argv[0], argv[optind++], "logical block", &blk);
2031         if (err)
2032                 return;
2033
2034         if (argc > optind+1)
2035                 goto print_usage;
2036
2037         if (argc == optind+1) {
2038                 err = strtoblk(argv[0], argv[optind++],
2039                                "physical block", &pblk);
2040                 if (err)
2041                         return;
2042                 if (flags & BMAP_ALLOC) {
2043                         com_err(0, 0, "Can't set and allocate a block");
2044                         return;
2045                 }
2046                 flags |= BMAP_SET;
2047         }
2048
2049         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, flags, blk,
2050                                &ret_flags, &pblk);
2051         if (errcode) {
2052                 com_err(argv[0], errcode,
2053                         "while mapping logical block %llu\n", blk);
2054                 return;
2055         }
2056         printf("%llu", pblk);
2057         if (ret_flags & BMAP_RET_UNINIT)
2058                 fputs(" (uninit)", stdout);
2059         fputc('\n', stdout);
2060 }
2061
2062 void do_imap(int argc, char *argv[])
2063 {
2064         ext2_ino_t      ino;
2065         unsigned long   group, block, block_nr, offset;
2066
2067         if (common_args_process(argc, argv, 2, 2, argv[0],
2068                                 "<file>", 0))
2069                 return;
2070         ino = string_to_inode(argv[1]);
2071         if (!ino)
2072                 return;
2073
2074         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2075         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2076                 EXT2_INODE_SIZE(current_fs->super);
2077         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2078         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2079                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2080                         group);
2081                 return;
2082         }
2083         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2084                 block;
2085         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2086
2087         printf("Inode %d is part of block group %lu\n"
2088                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2089                block_nr, offset);
2090
2091 }
2092
2093 void do_idump(int argc, char *argv[])
2094 {
2095         struct ext2_inode_large *inode;
2096         ext2_ino_t      ino;
2097         unsigned char   *buf;
2098         errcode_t       err;
2099         unsigned int    isize, size, offset = 0;
2100         int             c, mode = 0;
2101
2102         reset_getopt();
2103         while ((c = getopt (argc, argv, "bex")) != EOF) {
2104                 if (mode || c == '?') {
2105                 print_usage:
2106                         com_err(argv[0], 0,
2107                                 "Usage: inode_dump [-b]|[-e] <file>");
2108                         return;
2109                 }
2110                 mode = c;
2111         }
2112         if (optind != argc-1)
2113                 return;
2114
2115         if (check_fs_open(argv[0]))
2116                 return;
2117
2118         ino = string_to_inode(argv[optind]);
2119         if (!ino)
2120                 return;
2121
2122         isize = EXT2_INODE_SIZE(current_fs->super);
2123         err = ext2fs_get_mem(isize, &buf);
2124         if (err) {
2125                 com_err(argv[0], err, "while allocating memory");
2126                 return;
2127         }
2128
2129         err = ext2fs_read_inode_full(current_fs, ino,
2130                                      (struct ext2_inode *)buf, isize);
2131         if (err) {
2132                 com_err(argv[0], err, "while reading inode %u", ino);
2133                 goto err;
2134         }
2135
2136         inode = (struct ext2_inode_large *) buf;
2137         size = isize;
2138         switch (mode) {
2139         case 'b':
2140                 offset = ((char *) (&inode->i_block)) - ((char *) buf);
2141                 size = sizeof(inode->i_block);
2142                 break;
2143         case 'x':
2144         case 'e':
2145                 if (size <= EXT2_GOOD_OLD_INODE_SIZE) {
2146                 no_extra_space:
2147                         com_err(argv[0], 0, "No extra space in inode");
2148                         goto err;
2149                 }
2150                 offset = EXT2_GOOD_OLD_INODE_SIZE + inode->i_extra_isize;
2151                 if (offset > size)
2152                         goto err;
2153                 size -= offset;
2154                 break;
2155         }
2156         if (mode == 'x')
2157                 raw_inode_xattr_dump(stdout, buf + offset, size);
2158         else
2159                 do_byte_hexdump(stdout, buf + offset, size);
2160 err:
2161         ext2fs_free_mem(&buf);
2162 }
2163
2164 #ifndef READ_ONLY
2165 void do_set_current_time(int argc, char *argv[])
2166 {
2167         __s64 now;
2168
2169         if (common_args_process(argc, argv, 2, 2, argv[0],
2170                                 "<time>", 0))
2171                 return;
2172
2173         now = string_to_time(argv[1]);
2174         if (now == -1) {
2175                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2176                         argv[1]);
2177                 return;
2178
2179         } else {
2180                 printf("Setting current time to %s\n", time_to_string(now));
2181                 current_fs->now = now;
2182         }
2183 }
2184 #endif /* READ_ONLY */
2185
2186 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2187 {
2188         int compat, bit, ret;
2189         unsigned int feature_mask;
2190
2191         if (name) {
2192                 if (feature_type == E2P_FS_FEATURE)
2193                         ret = e2p_string2feature(name, &compat, &feature_mask);
2194                 else
2195                         ret = e2p_jrnl_string2feature(name, &compat,
2196                                                       &feature_mask);
2197                 if (ret)
2198                         return ret;
2199
2200                 if (!(supp[compat] & feature_mask))
2201                         return 1;
2202         } else {
2203                 for (compat = 0; compat < 3; compat++) {
2204                         for (bit = 0, feature_mask = 1; bit < 32;
2205                              bit++, feature_mask <<= 1) {
2206                                 if (supp[compat] & feature_mask) {
2207                                         if (feature_type == E2P_FS_FEATURE)
2208                                                 fprintf(stdout, " %s",
2209                                                 e2p_feature2string(compat,
2210                                                 feature_mask));
2211                                         else
2212                                                 fprintf(stdout, " %s",
2213                                                 e2p_jrnl_feature2string(compat,
2214                                                 feature_mask));
2215                                 }
2216                         }
2217                 }
2218                 fprintf(stdout, "\n");
2219         }
2220
2221         return 0;
2222 }
2223
2224 void do_supported_features(int argc, char *argv[])
2225 {
2226         int     ret;
2227         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2228                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2229                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2230         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2231                                  JFS_KNOWN_INCOMPAT_FEATURES,
2232                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2233
2234         if (argc > 1) {
2235                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2236                 if (ret) {
2237                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2238                                                 argv[1]);
2239                 }
2240                 if (ret)
2241                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2242                 else
2243                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2244         } else {
2245                 fprintf(stdout, "Supported features:");
2246                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2247                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2248         }
2249 }
2250
2251 #ifndef READ_ONLY
2252 void do_punch(int argc, char *argv[])
2253 {
2254         ext2_ino_t      ino;
2255         blk64_t         start, end;
2256         int             err;
2257         errcode_t       errcode;
2258
2259         if (common_args_process(argc, argv, 3, 4, argv[0],
2260                                 "<file> start_blk [end_blk]",
2261                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2262                 return;
2263
2264         ino = string_to_inode(argv[1]);
2265         if (!ino)
2266                 return;
2267         err = strtoblk(argv[0], argv[2], "logical block", &start);
2268         if (err)
2269                 return;
2270         if (argc == 4) {
2271                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2272                 if (err)
2273                         return;
2274         } else
2275                 end = ~0;
2276
2277         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2278
2279         if (errcode) {
2280                 com_err(argv[0], errcode,
2281                         "while truncating inode %u from %llu to %llu\n", ino,
2282                         (unsigned long long) start, (unsigned long long) end);
2283                 return;
2284         }
2285 }
2286
2287 void do_fallocate(int argc, char *argv[])
2288 {
2289         ext2_ino_t      ino;
2290         blk64_t         start, end;
2291         int             err;
2292         errcode_t       errcode;
2293
2294         if (common_args_process(argc, argv, 3, 4, argv[0],
2295                                 "<file> start_blk [end_blk]",
2296                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2297                 return;
2298
2299         ino = string_to_inode(argv[1]);
2300         if (!ino)
2301                 return;
2302         err = strtoblk(argv[0], argv[2], "logical block", &start);
2303         if (err)
2304                 return;
2305         if (argc == 4) {
2306                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2307                 if (err)
2308                         return;
2309         } else
2310                 end = ~0;
2311
2312         errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
2313                                    ino, NULL, ~0ULL, start, end - start + 1);
2314
2315         if (errcode) {
2316                 com_err(argv[0], errcode,
2317                         "while fallocating inode %u from %llu to %llu\n", ino,
2318                         (unsigned long long) start, (unsigned long long) end);
2319                 return;
2320         }
2321 }
2322 #endif /* READ_ONLY */
2323
2324 void do_symlink(int argc, char *argv[])
2325 {
2326         errcode_t       retval;
2327
2328         if (common_args_process(argc, argv, 3, 3, "symlink",
2329                                 "<filename> <target>", CHECK_FS_RW))
2330                 return;
2331
2332         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2333         if (retval)
2334                 com_err(argv[0], retval, 0);
2335
2336 }
2337
2338 #if CONFIG_MMP
2339 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2340 {
2341         struct mmp_struct *mmp_s;
2342         unsigned long long mmp_block;
2343         time_t t;
2344         errcode_t retval = 0;
2345
2346         if (check_fs_open(argv[0]))
2347                 return;
2348
2349         if (argc > 1) {
2350                 char *end = NULL;
2351                 mmp_block = strtoull(argv[1], &end, 0);
2352                 if (end == argv[0] || mmp_block == 0) {
2353                         fprintf(stderr, "%s: invalid MMP block '%s' given\n",
2354                                 argv[0], argv[1]);
2355                         return;
2356                 }
2357         } else {
2358                 mmp_block = current_fs->super->s_mmp_block;
2359         }
2360
2361         if (mmp_block == 0) {
2362                 fprintf(stderr, "%s: MMP: not active on this filesystem.\n",
2363                         argv[0]);
2364                 return;
2365         }
2366
2367         if (current_fs->mmp_buf == NULL) {
2368                 retval = ext2fs_get_mem(current_fs->blocksize,
2369                                         &current_fs->mmp_buf);
2370                 if (retval) {
2371                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2372                         return;
2373                 }
2374         }
2375
2376         mmp_s = current_fs->mmp_buf;
2377
2378         retval = ext2fs_mmp_read(current_fs, mmp_block, current_fs->mmp_buf);
2379         if (retval) {
2380                 com_err(argv[0], retval, "reading MMP block %llu.\n",
2381                         mmp_block);
2382                 return;
2383         }
2384
2385         t = mmp_s->mmp_time;
2386         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2387         fprintf(stdout, "update_interval: %d\n",
2388                 current_fs->super->s_mmp_update_interval);
2389         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2390         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2391         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2392         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2393         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2394         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2395         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2396 }
2397 #else
2398 void do_dump_mmp(int argc EXT2FS_ATTR((unused)),
2399                  char *argv[] EXT2FS_ATTR((unused)))
2400 {
2401         fprintf(stdout, "MMP is unsupported, please recompile with "
2402                         "--enable-mmp\n");
2403 }
2404 #endif
2405
2406 static int source_file(const char *cmd_file, int ss_idx)
2407 {
2408         FILE            *f;
2409         char            buf[BUFSIZ];
2410         char            *cp;
2411         int             exit_status = 0;
2412         int             retval;
2413
2414         if (strcmp(cmd_file, "-") == 0)
2415                 f = stdin;
2416         else {
2417                 f = fopen(cmd_file, "r");
2418                 if (!f) {
2419                         perror(cmd_file);
2420                         exit(1);
2421                 }
2422         }
2423         fflush(stdout);
2424         fflush(stderr);
2425         setbuf(stdout, NULL);
2426         setbuf(stderr, NULL);
2427         while (!feof(f)) {
2428                 if (fgets(buf, sizeof(buf), f) == NULL)
2429                         break;
2430                 cp = strchr(buf, '\n');
2431                 if (cp)
2432                         *cp = 0;
2433                 cp = strchr(buf, '\r');
2434                 if (cp)
2435                         *cp = 0;
2436                 printf("debugfs: %s\n", buf);
2437                 retval = ss_execute_line(ss_idx, buf);
2438                 if (retval) {
2439                         ss_perror(ss_idx, retval, buf);
2440                         exit_status++;
2441                 }
2442         }
2443         if (f != stdin)
2444                 fclose(f);
2445         return exit_status;
2446 }
2447
2448 int main(int argc, char **argv)
2449 {
2450         int             retval;
2451         const char      *usage =
2452                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2453                 "[-R request] [-d data_source_device] [-i] [-n] [-D] [-V] ["
2454 #ifndef READ_ONLY
2455                 "[-w] [-z undo_file] "
2456 #endif
2457                 "[-c]] [device]";
2458         int             c;
2459         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2460         char            *request = 0;
2461         int             exit_status = 0;
2462         char            *cmd_file = 0;
2463         blk64_t         superblock = 0;
2464         blk64_t         blocksize = 0;
2465         int             catastrophic = 0;
2466         char            *data_filename = 0;
2467 #ifdef READ_ONLY
2468         const char      *opt_string = "nicR:f:b:s:Vd:D";
2469 #else
2470         const char      *opt_string = "niwcR:f:b:s:Vd:Dz:";
2471         char            *undo_file = NULL;
2472 #endif
2473 #ifdef CONFIG_JBD_DEBUG
2474         char            *jbd_debug;
2475 #endif
2476
2477         if (debug_prog_name == 0)
2478 #ifdef READ_ONLY
2479                 debug_prog_name = "rdebugfs";
2480 #else
2481                 debug_prog_name = "debugfs";
2482 #endif
2483         add_error_table(&et_ext2_error_table);
2484         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2485                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2486
2487 #ifdef CONFIG_JBD_DEBUG
2488         jbd_debug = ss_safe_getenv("DEBUGFS_JBD_DEBUG");
2489         if (jbd_debug) {
2490                 int res = sscanf(jbd_debug, "%d", &journal_enable_debug);
2491
2492                 if (res != 1) {
2493                         fprintf(stderr,
2494                                 "DEBUGFS_JBD_DEBUG \"%s\" not an integer\n\n",
2495                                 jbd_debug);
2496                         exit(1);
2497                 }
2498         }
2499 #endif
2500         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2501                 switch (c) {
2502                 case 'R':
2503                         request = optarg;
2504                         break;
2505                 case 'f':
2506                         cmd_file = optarg;
2507                         break;
2508                 case 'd':
2509                         data_filename = optarg;
2510                         break;
2511                 case 'i':
2512                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2513                         break;
2514                 case 'n':
2515                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2516                         break;
2517 #ifndef READ_ONLY
2518                 case 'w':
2519                         open_flags |= EXT2_FLAG_RW;
2520                         break;
2521 #endif
2522                 case 'D':
2523                         open_flags |= EXT2_FLAG_DIRECT_IO;
2524                         break;
2525                 case 'b':
2526                         blocksize = parse_ulong(optarg, argv[0],
2527                                                 "block size", 0);
2528                         break;
2529                 case 's':
2530                         retval = strtoblk(argv[0], optarg,
2531                                           "superblock block number",
2532                                           &superblock);
2533                         if (retval)
2534                                 return 1;
2535                         break;
2536                 case 'c':
2537                         catastrophic = 1;
2538                         break;
2539                 case 'V':
2540                         /* Print version number and exit */
2541                         fprintf(stderr, "\tUsing %s\n",
2542                                 error_message(EXT2_ET_BASE));
2543                         exit(0);
2544                 case 'z':
2545                         undo_file = optarg;
2546                         break;
2547                 default:
2548                         com_err(argv[0], 0, usage, debug_prog_name);
2549                         return 1;
2550                 }
2551         }
2552         if (optind < argc)
2553                 open_filesystem(argv[optind], open_flags,
2554                                 superblock, blocksize, catastrophic,
2555                                 data_filename, undo_file);
2556
2557         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2558                                        &debug_cmds, &retval);
2559         if (retval) {
2560                 ss_perror(sci_idx, retval, "creating invocation");
2561                 exit(1);
2562         }
2563         ss_get_readline(sci_idx);
2564
2565         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2566         if (retval) {
2567                 ss_perror(sci_idx, retval, "adding standard requests");
2568                 exit (1);
2569         }
2570         if (extra_cmds)
2571                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2572         if (retval) {
2573                 ss_perror(sci_idx, retval, "adding extra requests");
2574                 exit (1);
2575         }
2576         if (request) {
2577                 retval = 0;
2578                 retval = ss_execute_line(sci_idx, request);
2579                 if (retval) {
2580                         ss_perror(sci_idx, retval, request);
2581                         exit_status++;
2582                 }
2583         } else if (cmd_file) {
2584                 exit_status = source_file(cmd_file, sci_idx);
2585         } else {
2586                 ss_listen(sci_idx);
2587         }
2588
2589         ss_delete_invocation(sci_idx);
2590
2591         if (current_fs)
2592                 close_filesystem();
2593
2594         remove_error_table(&et_ext2_error_table);
2595         return exit_status;
2596 }