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 int             no_copy_xattrs;
  59
  60 static int debugfs_setup_tdb(const char *device_name, char *undo_file,
  61                              io_manager *io_ptr)
  62 {
  63         errcode_t retval = ENOMEM;
  64         const char      *tdb_dir = NULL;
  65         char            *tdb_file = NULL;
  66         char            *dev_name, *tmp_name;
  67
  68         /* (re)open a specific undo file */
  69         if (undo_file && undo_file[0] != 0) {
  70                 retval = set_undo_io_backing_manager(*io_ptr);
  71                 if (retval)
  72                         goto err;
  73                 *io_ptr = undo_io_manager;
  74                 retval = set_undo_io_backup_file(undo_file);
  75                 if (retval)
  76                         goto err;
  77                 printf("Overwriting existing filesystem; this can be undone "
  78                         "using the command:\n"
  79                         "    e2undo %s %s\n\n",
  80                         undo_file, device_name);
  81                 return retval;
  82         }
  83
  84         /*
  85          * Configuration via a conf file would be
  86          * nice
  87          */
  88         tdb_dir = ss_safe_getenv("E2FSPROGS_UNDO_DIR");
  89         if (!tdb_dir)
  90                 tdb_dir = "/var/lib/e2fsprogs";
  91
  92         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
  93             access(tdb_dir, W_OK))
  94                 return 0;
  95
  96         tmp_name = strdup(device_name);
  97         if (!tmp_name)
  98                 goto errout;
  99         dev_name = basename(tmp_name);
 100         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
 101         if (!tdb_file) {
 102                 free(tmp_name);
 103                 goto errout;
 104         }
 105         sprintf(tdb_file, "%s/debugfs-%s.e2undo", tdb_dir, dev_name);
 106         free(tmp_name);
 107
 108         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
 109                 retval = errno;
 110                 com_err("debugfs", retval,
 111                         "while trying to delete %s", tdb_file);
 112                 goto errout;
 113         }
 114
 115         retval = set_undo_io_backing_manager(*io_ptr);
 116         if (retval)
 117                 goto errout;
 118         *io_ptr = undo_io_manager;
 119         retval = set_undo_io_backup_file(tdb_file);
 120         if (retval)
 121                 goto errout;
 122         printf("Overwriting existing filesystem; this can be undone "
 123                 "using the command:\n"
 124                 "    e2undo %s %s\n\n", tdb_file, device_name);
 125
 126         free(tdb_file);
 127         return 0;
 128 errout:
 129         free(tdb_file);
 130 err:
 131         com_err("debugfs", retval, "while trying to setup undo file\n");
 132         return retval;
 133 }
 134
 135 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
 136                             blk64_t blocksize, int catastrophic,
 137                             char *data_filename, char *undo_file)
 138 {
 139         int     retval;
 140         io_channel data_io = 0;
 141         io_manager io_ptr = unix_io_manager;
 142
 143         if (superblock != 0 && blocksize == 0) {
 144                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
 145                 current_fs = NULL;
 146                 return;
 147         }
 148
 149         if (data_filename) {
 150                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
 151                         com_err(device, 0,
 152                                 "The -d option is only valid when reading an e2image file");
 153                         current_fs = NULL;
 154                         return;
 155                 }
 156                 retval = unix_io_manager->open(data_filename, 0, &data_io);
 157                 if (retval) {
 158                         com_err(data_filename, 0, "while opening data source");
 159                         current_fs = NULL;
 160                         return;
 161                 }
 162         }
 163
 164         if (catastrophic)
 165                 open_flags |= EXT2_FLAG_SKIP_MMP | EXT2_FLAG_IGNORE_SB_ERRORS;
 166
 167         if (undo_file) {
 168                 retval = debugfs_setup_tdb(device, undo_file, &io_ptr);
 169                 if (retval)
 170                         exit(1);
 171         }
 172
 173 try_open_again:
 174         retval = ext2fs_open(device, open_flags, superblock, blocksize,
 175                              io_ptr, &current_fs);
 176         if (retval && (retval == EXT2_ET_SB_CSUM_INVALID) &&
 177             !(open_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 178                 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 179                 printf("Checksum errors in superblock!  Retrying...\n");
 180                 goto try_open_again;
 181         }
 182         if (retval) {
 183                 com_err(debug_prog_name, retval,
 184                         "while trying to open %s", device);
 185                 if (retval == EXT2_ET_BAD_MAGIC)
 186                         check_plausibility(device, CHECK_FS_EXIST, NULL);
 187                 current_fs = NULL;
 188                 return;
 189         }
 190         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 191
 192         if (catastrophic)
 193                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 194         else {
 195                 retval = ext2fs_read_bitmaps(current_fs);
 196                 if (retval) {
 197                         com_err(device, retval,
 198                                 "while reading allocation bitmaps");
 199                         goto errout;
 200                 }
 201         }
 202
 203         if (data_io) {
 204                 retval = ext2fs_set_data_io(current_fs, data_io);
 205                 if (retval) {
 206                         com_err(device, retval,
 207                                 "while setting data source");
 208                         goto errout;
 209                 }
 210         }
 211
 212         root = cwd = EXT2_ROOT_INO;
 213         return;
 214
 215 errout:
 216         retval = ext2fs_close_free(&current_fs);
 217         if (retval)
 218                 com_err(device, retval, "while trying to close filesystem");
 219 }
 220
 221 void do_open_filesys(int argc, char **argv)
 222 {
 223         int     c, err;
 224         int     catastrophic = 0;
 225         blk64_t superblock = 0;
 226         blk64_t blocksize = 0;
 227         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 228         char    *data_filename = 0;
 229         char    *undo_file = NULL;
 230
 231         reset_getopt();
 232         while ((c = getopt(argc, argv, "iwfecb:s:d:Dz:")) != EOF) {
 233                 switch (c) {
 234                 case 'i':
 235                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 236                         break;
 237                 case 'w':
 238 #ifdef READ_ONLY
 239                         goto print_usage;
 240 #else
 241                         open_flags |= EXT2_FLAG_RW;
 242 #endif /* READ_ONLY */
 243                         break;
 244                 case 'f':
 245                         open_flags |= EXT2_FLAG_FORCE;
 246                         break;
 247                 case 'e':
 248                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 249                         break;
 250                 case 'c':
 251                         catastrophic = 1;
 252                         break;
 253                 case 'd':
 254                         data_filename = optarg;
 255                         break;
 256                 case 'D':
 257                         open_flags |= EXT2_FLAG_DIRECT_IO;
 258                         break;
 259                 case 'b':
 260                         blocksize = parse_ulong(optarg, argv[0],
 261                                                 "block size", &err);
 262                         if (err)
 263                                 return;
 264                         break;
 265                 case 's':
 266                         err = strtoblk(argv[0], optarg,
 267                                        "superblock block number", &superblock);
 268                         if (err)
 269                                 return;
 270                         break;
 271                 case 'z':
 272                         undo_file = optarg;
 273                         break;
 274                 default:
 275                         goto print_usage;
 276                 }
 277         }
 278         if (optind != argc-1) {
 279                 goto print_usage;
 280         }
 281         if (check_fs_not_open(argv[0]))
 282                 return;
 283         open_filesystem(argv[optind], open_flags,
 284                         superblock, blocksize, catastrophic,
 285                         data_filename, undo_file);
 286         return;
 287
 288 print_usage:
 289         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 290                 "[-d image_filename] [-z undo_file] [-c] [-i] [-f] [-e] [-D] "
 291 #ifndef READ_ONLY
 292                 "[-w] "
 293 #endif
 294                 "<device>\n", argv[0]);
 295 }
 296
 297 void do_lcd(int argc, char **argv)
 298 {
 299         if (argc != 2) {
 300                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 301                 return;
 302         }
 303
 304         if (chdir(argv[1]) == -1) {
 305                 com_err(argv[0], errno,
 306                         "while trying to change native directory to %s",
 307                         argv[1]);
 308                 return;
 309         }
 310 }
 311
 312 static void close_filesystem(NOARGS)
 313 {
 314         int     retval;
 315
 316         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 317                 retval = ext2fs_write_inode_bitmap(current_fs);
 318                 if (retval)
 319                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 320         }
 321         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 322                 retval = ext2fs_write_block_bitmap(current_fs);
 323                 if (retval)
 324                         com_err("ext2fs_write_block_bitmap", retval, 0);
 325         }
 326         if (current_qctx)
 327                 quota_release_context(&current_qctx);
 328         retval = ext2fs_close_free(&current_fs);
 329         if (retval)
 330                 com_err("ext2fs_close", retval, 0);
 331         return;
 332 }
 333
 334 void do_close_filesys(int argc, char **argv)
 335 {
 336         int     c;
 337
 338         if (check_fs_open(argv[0]))
 339                 return;
 340
 341         reset_getopt();
 342         while ((c = getopt (argc, argv, "a")) != EOF) {
 343                 switch (c) {
 344                 case 'a':
 345                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 346                         break;
 347                 default:
 348                         goto print_usage;
 349                 }
 350         }
 351
 352         if (argc > optind) {
 353         print_usage:
 354                 com_err(0, 0, "Usage: close_filesys [-a]");
 355                 return;
 356         }
 357
 358         close_filesystem();
 359 }
 360
 361 #ifndef READ_ONLY
 362 void do_init_filesys(int argc, char **argv)
 363 {
 364         struct ext2_super_block param;
 365         errcode_t       retval;
 366         int             err;
 367         blk64_t         blocks;
 368
 369         if (common_args_process(argc, argv, 3, 3, "initialize",
 370                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 371                 return;
 372
 373         memset(&param, 0, sizeof(struct ext2_super_block));
 374         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 375         if (err)
 376                 return;
 377         ext2fs_blocks_count_set(&param, blocks);
 378         retval = ext2fs_initialize(argv[1], 0, &param,
 379                                    unix_io_manager, &current_fs);
 380         if (retval) {
 381                 com_err(argv[1], retval, "while initializing filesystem");
 382                 current_fs = NULL;
 383                 return;
 384         }
 385         root = cwd = EXT2_ROOT_INO;
 386         return;
 387 }
 388
 389 static void print_features(struct ext2_super_block * s, FILE *f)
 390 {
 391         int     i, j, printed=0;
 392         __u32   *mask = &s->s_feature_compat, m;
 393
 394         fputs("Filesystem features:", f);
 395         for (i=0; i <3; i++,mask++) {
 396                 for (j=0,m=1; j < 32; j++, m<<=1) {
 397                         if (*mask & m) {
 398                                 fprintf(f, " %s", e2p_feature2string(i, m));
 399                                 printed++;
 400                         }
 401                 }
 402         }
 403         if (printed == 0)
 404                 fputs("(none)", f);
 405         fputs("\n", f);
 406 }
 407 #endif /* READ_ONLY */
 408
 409 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 410                           const char *str, int *first, FILE *f)
 411 {
 412         if (ext2fs_bg_flags_test(fs, group, mask)) {
 413                 if (*first) {
 414                         fputs("           [", f);
 415                         *first = 0;
 416                 } else
 417                         fputs(", ", f);
 418                 fputs(str, f);
 419         }
 420 }
 421
 422 void do_show_super_stats(int argc, char *argv[])
 423 {
 424         const char *units ="block";
 425         dgrp_t  i;
 426         FILE    *out;
 427         int     c, header_only = 0;
 428         int     numdirs = 0, first, gdt_csum;
 429
 430         reset_getopt();
 431         while ((c = getopt (argc, argv, "h")) != EOF) {
 432                 switch (c) {
 433                 case 'h':
 434                         header_only++;
 435                         break;
 436                 default:
 437                         goto print_usage;
 438                 }
 439         }
 440         if (optind != argc) {
 441                 goto print_usage;
 442         }
 443         if (check_fs_open(argv[0]))
 444                 return;
 445         out = open_pager();
 446
 447         if (ext2fs_has_feature_bigalloc(current_fs->super))
 448                 units = "cluster";
 449
 450         list_super2(current_fs->super, out);
 451         if (ext2fs_has_feature_metadata_csum(current_fs->super) &&
 452             !ext2fs_superblock_csum_verify(current_fs,
 453                                            current_fs->super)) {
 454                 __u32 orig_csum = current_fs->super->s_checksum;
 455
 456                 ext2fs_superblock_csum_set(current_fs,
 457                                            current_fs->super);
 458                 fprintf(out, "Expected Checksum:        0x%08x\n",
 459                         current_fs->super->s_checksum);
 460                 current_fs->super->s_checksum = orig_csum;
 461         }
 462         for (i=0; i < current_fs->group_desc_count; i++)
 463                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 464         fprintf(out, "Directories:              %d\n", numdirs);
 465
 466         if (header_only) {
 467                 close_pager(out);
 468                 return;
 469         }
 470
 471         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 472         for (i = 0; i < current_fs->group_desc_count; i++) {
 473                 fprintf(out, " Group %2d: block bitmap at %llu, "
 474                         "inode bitmap at %llu, "
 475                         "inode table at %llu\n"
 476                         "           %u free %s%s, "
 477                         "%u free %s, "
 478                         "%u used %s%s",
 479                         i, ext2fs_block_bitmap_loc(current_fs, i),
 480                         ext2fs_inode_bitmap_loc(current_fs, i),
 481                         ext2fs_inode_table_loc(current_fs, i),
 482                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 483                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 484                         "s" : "",
 485                         ext2fs_bg_free_inodes_count(current_fs, i),
 486                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 487                         "inodes" : "inode",
 488                         ext2fs_bg_used_dirs_count(current_fs, i),
 489                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 490                                 : "directory", gdt_csum ? ", " : "\n");
 491                 if (gdt_csum)
 492                         fprintf(out, "%u unused %s\n",
 493                                 ext2fs_bg_itable_unused(current_fs, i),
 494                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 495                                 "inodes" : "inode");
 496                 first = 1;
 497                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 498                               &first, out);
 499                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 500                               &first, out);
 501                 if (gdt_csum) {
 502                         fprintf(out, "%sChecksum 0x%04x",
 503                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 504                         first = 0;
 505                 }
 506                 if (!first)
 507                         fputs("]\n", out);
 508         }
 509         close_pager(out);
 510         return;
 511 print_usage:
 512         fprintf(stderr, "%s: Usage: show_super_stats [-h]\n", argv[0]);
 513 }
 514
 515 #ifndef READ_ONLY
 516 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 517                       char **argv EXT2FS_ATTR((unused)))
 518 {
 519         if (check_fs_open(argv[0]))
 520                 return;
 521         if (check_fs_read_write(argv[0]))
 522                 return;
 523
 524         if (argv[1] && !strcmp(argv[1], "-clean"))
 525                 current_fs->super->s_state |= EXT2_VALID_FS;
 526         else
 527                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 528         ext2fs_mark_super_dirty(current_fs);
 529 }
 530 #endif /* READ_ONLY */
 531
 532 struct list_blocks_struct {
 533         FILE            *f;
 534         e2_blkcnt_t     total;
 535         blk64_t         first_block, last_block;
 536         e2_blkcnt_t     first_bcnt, last_bcnt;
 537         e2_blkcnt_t     first;
 538 };
 539
 540 static void finish_range(struct list_blocks_struct *lb)
 541 {
 542         if (lb->first_block == 0)
 543                 return;
 544         if (lb->first)
 545                 lb->first = 0;
 546         else
 547                 fprintf(lb->f, ", ");
 548         if (lb->first_block == lb->last_block)
 549                 fprintf(lb->f, "(%lld):%llu",
 550                         (long long)lb->first_bcnt, lb->first_block);
 551         else
 552                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 553                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 554                         lb->first_block, lb->last_block);
 555         lb->first_block = 0;
 556 }
 557
 558 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 559                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 560                             blk64_t ref_block EXT2FS_ATTR((unused)),
 561                             int ref_offset EXT2FS_ATTR((unused)),
 562                             void *private)
 563 {
 564         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 565
 566         lb->total++;
 567         if (blockcnt >= 0) {
 568                 /*
 569                  * See if we can add on to the existing range (if it exists)
 570                  */
 571                 if (lb->first_block &&
 572                     (lb->last_block+1 == *blocknr) &&
 573                     (lb->last_bcnt+1 == blockcnt)) {
 574                         lb->last_block = *blocknr;
 575                         lb->last_bcnt = blockcnt;
 576                         return 0;
 577                 }
 578                 /*
 579                  * Start a new range.
 580                  */
 581                 finish_range(lb);
 582                 lb->first_block = lb->last_block = *blocknr;
 583                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 584                 return 0;
 585         }
 586         /*
 587          * Not a normal block.  Always force a new range.
 588          */
 589         finish_range(lb);
 590         if (lb->first)
 591                 lb->first = 0;
 592         else
 593                 fprintf(lb->f, ", ");
 594         if (blockcnt == -1)
 595                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 596         else if (blockcnt == -2)
 597                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 598         else if (blockcnt == -3)
 599                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 600         return 0;
 601 }
 602
 603 static void internal_dump_inode_extra(FILE *out,
 604                                       const char *prefix EXT2FS_ATTR((unused)),
 605                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 606                                       struct ext2_inode_large *inode)
 607 {
 608         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 609         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 610                         EXT2_GOOD_OLD_INODE_SIZE) {
 611                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 612                                 inode->i_extra_isize);
 613                 return;
 614         }
 615 }
 616
 617 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 618 {
 619         struct list_blocks_struct lb;
 620
 621         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 622         lb.total = 0;
 623         lb.first_block = 0;
 624         lb.f = f;
 625         lb.first = 1;
 626         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 627                               list_blocks_proc, (void *)&lb);
 628         finish_range(&lb);
 629         if (lb.total)
 630                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 631         fprintf(f,"\n");
 632 }
 633
 634 static int int_log10(unsigned long long arg)
 635 {
 636         int     l = 0;
 637
 638         arg = arg / 10;
 639         while (arg) {
 640                 l++;
 641                 arg = arg / 10;
 642         }
 643         return l;
 644 }
 645
 646 #define DUMP_LEAF_EXTENTS       0x01
 647 #define DUMP_NODE_EXTENTS       0x02
 648 #define DUMP_EXTENT_TABLE       0x04
 649
 650 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 651                          int flags, int logical_width, int physical_width)
 652 {
 653         ext2_extent_handle_t    handle;
 654         struct ext2fs_extent    extent;
 655         struct ext2_extent_info info;
 656         int                     op = EXT2_EXTENT_ROOT;
 657         unsigned int            printed = 0;
 658         errcode_t               errcode;
 659
 660         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 661         if (errcode)
 662                 return;
 663
 664         if (flags & DUMP_EXTENT_TABLE)
 665                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 666                         (logical_width*2)+3, "Logical",
 667                         (physical_width*2)+3, "Physical");
 668         else
 669                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 670
 671         while (1) {
 672                 errcode = ext2fs_extent_get(handle, op, &extent);
 673
 674                 if (errcode)
 675                         break;
 676
 677                 op = EXT2_EXTENT_NEXT;
 678
 679                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 680                         continue;
 681
 682                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 683                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 684                                 continue;
 685                 } else {
 686                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 687                                 continue;
 688                 }
 689
 690                 errcode = ext2fs_extent_get_info(handle, &info);
 691                 if (errcode)
 692                         continue;
 693
 694                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 695                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 696                                 continue;
 697
 698                         if (flags & DUMP_EXTENT_TABLE) {
 699                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 700                                         "%*llu%*s %6u\n",
 701                                         info.curr_level, info.max_depth,
 702                                         info.curr_entry, info.num_entries,
 703                                         logical_width,
 704                                         extent.e_lblk,
 705                                         logical_width,
 706                                         extent.e_lblk + (extent.e_len - 1),
 707                                         physical_width,
 708                                         extent.e_pblk,
 709                                         physical_width+3, "", extent.e_len);
 710                                 continue;
 711                         }
 712
 713                         fprintf(f, "%s(ETB%d):%lld",
 714                                 printed ? ", " : "", info.curr_level,
 715                                 extent.e_pblk);
 716                         printed = 1;
 717                         continue;
 718                 }
 719
 720                 if (flags & DUMP_EXTENT_TABLE) {
 721                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 722                                 "%*llu - %*llu %6u %s\n",
 723                                 info.curr_level, info.max_depth,
 724                                 info.curr_entry, info.num_entries,
 725                                 logical_width,
 726                                 extent.e_lblk,
 727                                 logical_width,
 728                                 extent.e_lblk + (extent.e_len - 1),
 729                                 physical_width,
 730                                 extent.e_pblk,
 731                                 physical_width,
 732                                 extent.e_pblk + (extent.e_len - 1),
 733                                 extent.e_len,
 734                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 735                                         "Uninit" : "");
 736                         continue;
 737                 }
 738
 739                 if (extent.e_len == 0)
 740                         continue;
 741                 else if (extent.e_len == 1)
 742                         fprintf(f,
 743                                 "%s(%lld%s):%lld",
 744                                 printed ? ", " : "",
 745                                 extent.e_lblk,
 746                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 747                                 "[u]" : "",
 748                                 extent.e_pblk);
 749                 else
 750                         fprintf(f,
 751                                 "%s(%lld-%lld%s):%lld-%lld",
 752                                 printed ? ", " : "",
 753                                 extent.e_lblk,
 754                                 extent.e_lblk + (extent.e_len - 1),
 755                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 756                                         "[u]" : "",
 757                                 extent.e_pblk,
 758                                 extent.e_pblk + (extent.e_len - 1));
 759                 printed = 1;
 760         }
 761         if (printed)
 762                 fprintf(f, "\n");
 763         ext2fs_extent_free(handle);
 764 }
 765
 766 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 767 {
 768         errcode_t retval;
 769         size_t size;
 770
 771         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 772         if (!retval)
 773                 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
 774 }
 775
 776 static void dump_inline_symlink(FILE *out, ext2_ino_t inode_num,
 777                                 struct ext2_inode *inode, const char *prefix)
 778 {
 779         errcode_t retval;
 780         char *buf = NULL;
 781         size_t size;
 782
 783         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 784         if (retval)
 785                 goto out;
 786
 787         retval = ext2fs_get_memzero(size + 1, &buf);
 788         if (retval)
 789                 goto out;
 790
 791         retval = ext2fs_inline_data_get(current_fs, inode_num,
 792                                         inode, buf, &size);
 793         if (retval)
 794                 goto out;
 795
 796         fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 797                 (int)size, buf);
 798 out:
 799         if (buf)
 800                 ext2fs_free_mem(&buf);
 801         if (retval)
 802                 com_err(__func__, retval, "while dumping link destination");
 803 }
 804
 805 void internal_dump_inode(FILE *out, const char *prefix,
 806                          ext2_ino_t inode_num, struct ext2_inode *inode,
 807                          int do_dump_blocks)
 808 {
 809         const char *i_type;
 810         char frag, fsize;
 811         int os = current_fs->super->s_creator_os;
 812         struct ext2_inode_large *large_inode;
 813         int is_large_inode = 0;
 814
 815         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 816                 is_large_inode = 1;
 817         large_inode = (struct ext2_inode_large *) inode;
 818
 819         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 820         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 821         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 822         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 823         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 824         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 825         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 826         else i_type = "bad type";
 827         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 828         fprintf(out, "%sMode:  0%03o   Flags: 0x%x\n",
 829                 prefix, inode->i_mode & 07777, inode->i_flags);
 830         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 831                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 832                         prefix, inode->i_generation, large_inode->i_version_hi,
 833                         inode->osd1.linux1.l_i_version);
 834         } else {
 835                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 836                         inode->i_generation, inode->osd1.linux1.l_i_version);
 837         }
 838         fprintf(out, "%sUser: %5d   Group: %5d",
 839                 prefix, inode_uid(*inode), inode_gid(*inode));
 840         if (is_large_inode && large_inode->i_extra_isize >= 32)
 841                 fprintf(out, "   Project: %5d", large_inode->i_projid);
 842         fputs("   Size: ", out);
 843         if (LINUX_S_ISREG(inode->i_mode))
 844                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 845         else
 846                 fprintf(out, "%d\n", inode->i_size);
 847         if (os == EXT2_OS_HURD)
 848                 fprintf(out,
 849                         "%sFile ACL: %d Translator: %d\n",
 850                         prefix,
 851                         inode->i_file_acl,
 852                         inode->osd1.hurd1.h_i_translator);
 853         else
 854                 fprintf(out, "%sFile ACL: %llu\n",
 855                         prefix,
 856                         inode->i_file_acl | ((long long)
 857                                 (inode->osd2.linux2.l_i_file_acl_high) << 32));
 858         if (os != EXT2_OS_HURD)
 859                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 860                         prefix, inode->i_links_count,
 861                         (((unsigned long long)
 862                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 863                         inode->i_blocks);
 864         else
 865                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 866                         prefix, inode->i_links_count, inode->i_blocks);
 867         switch (os) {
 868             case EXT2_OS_HURD:
 869                 frag = inode->osd2.hurd2.h_i_frag;
 870                 fsize = inode->osd2.hurd2.h_i_fsize;
 871                 break;
 872             default:
 873                 frag = fsize = 0;
 874         }
 875         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 876                 prefix, inode->i_faddr, frag, fsize);
 877         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 878                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 879                         inode->i_ctime, large_inode->i_ctime_extra,
 880                         inode_time_to_string(inode->i_ctime,
 881                                              large_inode->i_ctime_extra));
 882                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 883                         inode->i_atime, large_inode->i_atime_extra,
 884                         inode_time_to_string(inode->i_atime,
 885                                              large_inode->i_atime_extra));
 886                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 887                         inode->i_mtime, large_inode->i_mtime_extra,
 888                         inode_time_to_string(inode->i_mtime,
 889                                              large_inode->i_mtime_extra));
 890                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 891                         large_inode->i_crtime, large_inode->i_crtime_extra,
 892                         inode_time_to_string(large_inode->i_crtime,
 893                                              large_inode->i_crtime_extra));
 894                 if (inode->i_dtime)
 895                         fprintf(out, "%s dtime: 0x%08x:(%08x) -- %s", prefix,
 896                                 large_inode->i_dtime, large_inode->i_ctime_extra,
 897                                 inode_time_to_string(inode->i_dtime,
 898                                                      large_inode->i_ctime_extra));
 899         } else {
 900                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 901                         time_to_string((__s32) inode->i_ctime));
 902                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 903                         time_to_string((__s32) inode->i_atime));
 904                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 905                         time_to_string((__s32) inode->i_mtime));
 906                 if (inode->i_dtime)
 907                         fprintf(out, "%sdtime: 0x%08x -- %s", prefix,
 908                                 inode->i_dtime,
 909                                 time_to_string((__s32) inode->i_dtime));
 910         }
 911         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 912                 internal_dump_inode_extra(out, prefix, inode_num,
 913                                           (struct ext2_inode_large *) inode);
 914         dump_inode_attributes(out, inode_num);
 915         if (ext2fs_has_feature_metadata_csum(current_fs->super)) {
 916                 __u32 crc = inode->i_checksum_lo;
 917                 if (is_large_inode &&
 918                     large_inode->i_extra_isize >=
 919                                 (offsetof(struct ext2_inode_large,
 920                                           i_checksum_hi) -
 921                                  EXT2_GOOD_OLD_INODE_SIZE))
 922                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 923                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 924         }
 925
 926         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_is_fast_symlink(inode))
 927                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 928                         (int)EXT2_I_SIZE(inode), (char *)inode->i_block);
 929         else if (LINUX_S_ISLNK(inode->i_mode) &&
 930                    (inode->i_flags & EXT4_INLINE_DATA_FL))
 931                 dump_inline_symlink(out, inode_num, inode, prefix);
 932         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 933                 int major, minor;
 934                 const char *devnote;
 935
 936                 if (inode->i_block[0]) {
 937                         major = (inode->i_block[0] >> 8) & 255;
 938                         minor = inode->i_block[0] & 255;
 939                         devnote = "";
 940                 } else {
 941                         major = (inode->i_block[1] & 0xfff00) >> 8;
 942                         minor = ((inode->i_block[1] & 0xff) |
 943                                  ((inode->i_block[1] >> 12) & 0xfff00));
 944                         devnote = "(New-style) ";
 945                 }
 946                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 947                         devnote, major, minor, major, minor);
 948         } else if (do_dump_blocks) {
 949                 if (inode->i_flags & EXT4_EXTENTS_FL)
 950                         dump_extents(out, prefix, inode_num,
 951                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 952                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 953                         dump_inline_data(out, prefix, inode_num);
 954                 else
 955                         dump_blocks(out, prefix, inode_num);
 956         }
 957 }
 958
 959 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 960 {
 961         FILE    *out;
 962
 963         out = open_pager();
 964         internal_dump_inode(out, "", inode_num, inode, 1);
 965         close_pager(out);
 966 }
 967
 968 void do_stat(int argc, char *argv[])
 969 {
 970         ext2_ino_t      inode;
 971         struct ext2_inode * inode_buf;
 972
 973         if (check_fs_open(argv[0]))
 974                 return;
 975
 976         inode_buf = (struct ext2_inode *)
 977                         malloc(EXT2_INODE_SIZE(current_fs->super));
 978         if (!inode_buf) {
 979                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 980                 return;
 981         }
 982
 983         if (common_inode_args_process(argc, argv, &inode, 0)) {
 984                 free(inode_buf);
 985                 return;
 986         }
 987
 988         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 989                                         EXT2_INODE_SIZE(current_fs->super))) {
 990                 free(inode_buf);
 991                 return;
 992         }
 993
 994         dump_inode(inode, inode_buf);
 995         free(inode_buf);
 996         return;
 997 }
 998
 999 void do_dump_extents(int argc, char **argv)
1000 {
1001         struct ext2_inode inode;
1002         ext2_ino_t      ino;
1003         FILE            *out;
1004         int             c, flags = 0;
1005         int             logical_width;
1006         int             physical_width;
1007
1008         reset_getopt();
1009         while ((c = getopt(argc, argv, "nl")) != EOF) {
1010                 switch (c) {
1011                 case 'n':
1012                         flags |= DUMP_NODE_EXTENTS;
1013                         break;
1014                 case 'l':
1015                         flags |= DUMP_LEAF_EXTENTS;
1016                         break;
1017                 }
1018         }
1019
1020         if (argc != optind + 1) {
1021                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
1022                 return;
1023         }
1024
1025         if (flags == 0)
1026                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
1027         flags |= DUMP_EXTENT_TABLE;
1028
1029         if (check_fs_open(argv[0]))
1030                 return;
1031
1032         ino = string_to_inode(argv[optind]);
1033         if (ino == 0)
1034                 return;
1035
1036         if (debugfs_read_inode(ino, &inode, argv[0]))
1037                 return;
1038
1039         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
1040                 fprintf(stderr, "%s: does not uses extent block maps\n",
1041                         argv[optind]);
1042                 return;
1043         }
1044
1045         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
1046                                   current_fs->blocksize) + 1;
1047         if (logical_width < 5)
1048                 logical_width = 5;
1049         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
1050         if (physical_width < 5)
1051                 physical_width = 5;
1052
1053         out = open_pager();
1054         dump_extents(out, "", ino, flags, logical_width, physical_width);
1055         close_pager(out);
1056         return;
1057 }
1058
1059 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
1060                              blk64_t *blocknr,
1061                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1062                              blk64_t ref_block EXT2FS_ATTR((unused)),
1063                              int ref_offset EXT2FS_ATTR((unused)),
1064                              void *private EXT2FS_ATTR((unused)))
1065 {
1066         printf("%llu ", *blocknr);
1067         return 0;
1068 }
1069
1070 void do_blocks(int argc, char *argv[])
1071 {
1072         ext2_ino_t      inode;
1073
1074         if (check_fs_open(argv[0]))
1075                 return;
1076
1077         if (common_inode_args_process(argc, argv, &inode, 0)) {
1078                 return;
1079         }
1080
1081         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1082                               print_blocks_proc, NULL);
1083         fputc('\n', stdout);
1084         return;
1085 }
1086
1087 void do_chroot(int argc, char *argv[])
1088 {
1089         ext2_ino_t inode;
1090         int retval;
1091
1092         if (common_inode_args_process(argc, argv, &inode, 0))
1093                 return;
1094
1095         retval = ext2fs_check_directory(current_fs, inode);
1096         if (retval)  {
1097                 com_err(argv[1], retval, 0);
1098                 return;
1099         }
1100         root = inode;
1101 }
1102
1103 #ifndef READ_ONLY
1104 void do_clri(int argc, char *argv[])
1105 {
1106         ext2_ino_t inode;
1107         struct ext2_inode inode_buf;
1108
1109         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1110                 return;
1111
1112         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1113                 return;
1114         memset(&inode_buf, 0, sizeof(inode_buf));
1115         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1116                 return;
1117 }
1118
1119 void do_freei(int argc, char *argv[])
1120 {
1121         unsigned int    len = 1;
1122         int             err = 0;
1123         ext2_ino_t      inode;
1124
1125         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1126                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1127                 return;
1128         if (check_fs_read_write(argv[0]))
1129                 return;
1130
1131         inode = string_to_inode(argv[1]);
1132         if (!inode)
1133                 return;
1134
1135         if (argc == 3) {
1136                 len = parse_ulong(argv[2], argv[0], "length", &err);
1137                 if (err)
1138                         return;
1139         }
1140
1141         if (len == 1 &&
1142             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1143                 com_err(argv[0], 0, "Warning: inode already clear");
1144         while (len-- > 0)
1145                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1146         ext2fs_mark_ib_dirty(current_fs);
1147 }
1148
1149 void do_seti(int argc, char *argv[])
1150 {
1151         unsigned int    len = 1;
1152         int             err = 0;
1153         ext2_ino_t      inode;
1154
1155         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1156                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1157                 return;
1158         if (check_fs_read_write(argv[0]))
1159                 return;
1160
1161         inode = string_to_inode(argv[1]);
1162         if (!inode)
1163                 return;
1164
1165         if (argc == 3) {
1166                 len = parse_ulong(argv[2], argv[0], "length", &err);
1167                 if (err)
1168                         return;
1169         }
1170
1171         if ((len == 1) &&
1172             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1173                 com_err(argv[0], 0, "Warning: inode already set");
1174         while (len-- > 0)
1175                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1176         ext2fs_mark_ib_dirty(current_fs);
1177 }
1178 #endif /* READ_ONLY */
1179
1180 void do_testi(int argc, char *argv[])
1181 {
1182         ext2_ino_t inode;
1183
1184         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1185                 return;
1186
1187         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1188                 printf("Inode %u is marked in use\n", inode);
1189         else
1190                 printf("Inode %u is not in use\n", inode);
1191 }
1192
1193 #ifndef READ_ONLY
1194 void do_freeb(int argc, char *argv[])
1195 {
1196         blk64_t block;
1197         blk64_t count = 1;
1198
1199         if (common_block_args_process(argc, argv, &block, &count))
1200                 return;
1201         if (check_fs_read_write(argv[0]))
1202                 return;
1203         while (count-- > 0) {
1204                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1205                         com_err(argv[0], 0, "Warning: block %llu already clear",
1206                                 block);
1207                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1208                 block++;
1209         }
1210         ext2fs_mark_bb_dirty(current_fs);
1211 }
1212
1213 void do_setb(int argc, char *argv[])
1214 {
1215         blk64_t block;
1216         blk64_t count = 1;
1217
1218         if (common_block_args_process(argc, argv, &block, &count))
1219                 return;
1220         if (check_fs_read_write(argv[0]))
1221                 return;
1222         while (count-- > 0) {
1223                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1224                         com_err(argv[0], 0, "Warning: block %llu already set",
1225                                 block);
1226                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1227                 block++;
1228         }
1229         ext2fs_mark_bb_dirty(current_fs);
1230 }
1231 #endif /* READ_ONLY */
1232
1233 void do_testb(int argc, char *argv[])
1234 {
1235         blk64_t block;
1236         blk64_t count = 1;
1237
1238         if (common_block_args_process(argc, argv, &block, &count))
1239                 return;
1240         while (count-- > 0) {
1241                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1242                         printf("Block %llu marked in use\n", block);
1243                 else
1244                         printf("Block %llu not in use\n", block);
1245                 block++;
1246         }
1247 }
1248
1249 #ifndef READ_ONLY
1250 static void modify_u8(char *com, const char *prompt,
1251                       const char *format, __u8 *val)
1252 {
1253         char buf[200];
1254         unsigned long v;
1255         char *tmp;
1256
1257         sprintf(buf, format, *val);
1258         printf("%30s    [%s] ", prompt, buf);
1259         if (!fgets(buf, sizeof(buf), stdin))
1260                 return;
1261         if (buf[strlen (buf) - 1] == '\n')
1262                 buf[strlen (buf) - 1] = '\0';
1263         if (!buf[0])
1264                 return;
1265         v = strtoul(buf, &tmp, 0);
1266         if (*tmp)
1267                 com_err(com, 0, "Bad value - %s", buf);
1268         else
1269                 *val = v;
1270 }
1271
1272 static void modify_u16(char *com, const char *prompt,
1273                        const char *format, __u16 *val)
1274 {
1275         char buf[200];
1276         unsigned long v;
1277         char *tmp;
1278
1279         sprintf(buf, format, *val);
1280         printf("%30s    [%s] ", prompt, buf);
1281         if (!fgets(buf, sizeof(buf), stdin))
1282                 return;
1283         if (buf[strlen (buf) - 1] == '\n')
1284                 buf[strlen (buf) - 1] = '\0';
1285         if (!buf[0])
1286                 return;
1287         v = strtoul(buf, &tmp, 0);
1288         if (*tmp)
1289                 com_err(com, 0, "Bad value - %s", buf);
1290         else
1291                 *val = v;
1292 }
1293
1294 static void modify_u32(char *com, const char *prompt,
1295                        const char *format, __u32 *val)
1296 {
1297         char buf[200];
1298         unsigned long v;
1299         char *tmp;
1300
1301         sprintf(buf, format, *val);
1302         printf("%30s    [%s] ", prompt, buf);
1303         if (!fgets(buf, sizeof(buf), stdin))
1304                 return;
1305         if (buf[strlen (buf) - 1] == '\n')
1306                 buf[strlen (buf) - 1] = '\0';
1307         if (!buf[0])
1308                 return;
1309         v = strtoul(buf, &tmp, 0);
1310         if (*tmp)
1311                 com_err(com, 0, "Bad value - %s", buf);
1312         else
1313                 *val = v;
1314 }
1315
1316
1317 void do_modify_inode(int argc, char *argv[])
1318 {
1319         struct ext2_inode inode;
1320         ext2_ino_t      inode_num;
1321         int             i;
1322         unsigned char   *frag, *fsize;
1323         char            buf[80];
1324         int             os;
1325         const char      *hex_format = "0x%x";
1326         const char      *octal_format = "0%o";
1327         const char      *decimal_format = "%d";
1328         const char      *unsignedlong_format = "%lu";
1329
1330         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1331                 return;
1332
1333         os = current_fs->super->s_creator_os;
1334
1335         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1336                 return;
1337
1338         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1339         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1340         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1341         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1342         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1343         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1344         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1345         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1346         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1347         if (os == EXT2_OS_LINUX)
1348                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1349                            &inode.osd2.linux2.l_i_blocks_hi);
1350         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1351         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1352         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1353 #if 0
1354         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1355 #endif
1356         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1357
1358         modify_u32(argv[0], "High 32bits of size", decimal_format,
1359                    &inode.i_size_high);
1360
1361         if (os == EXT2_OS_HURD)
1362                 modify_u32(argv[0], "Translator Block",
1363                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1364
1365         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1366         switch (os) {
1367             case EXT2_OS_HURD:
1368                 frag = &inode.osd2.hurd2.h_i_frag;
1369                 fsize = &inode.osd2.hurd2.h_i_fsize;
1370                 break;
1371             default:
1372                 frag = fsize = 0;
1373         }
1374         if (frag)
1375                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1376         if (fsize)
1377                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1378
1379         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1380                 sprintf(buf, "Direct Block #%d", i);
1381                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1382         }
1383         modify_u32(argv[0], "Indirect Block", decimal_format,
1384                     &inode.i_block[EXT2_IND_BLOCK]);
1385         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1386                     &inode.i_block[EXT2_DIND_BLOCK]);
1387         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1388                     &inode.i_block[EXT2_TIND_BLOCK]);
1389         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1390                 return;
1391 }
1392 #endif /* READ_ONLY */
1393
1394 void do_change_working_dir(int argc, char *argv[])
1395 {
1396         ext2_ino_t      inode;
1397         int             retval;
1398
1399         if (common_inode_args_process(argc, argv, &inode, 0))
1400                 return;
1401
1402         retval = ext2fs_check_directory(current_fs, inode);
1403         if (retval) {
1404                 com_err(argv[1], retval, 0);
1405                 return;
1406         }
1407         cwd = inode;
1408         return;
1409 }
1410
1411 void do_print_working_directory(int argc, char *argv[])
1412 {
1413         int     retval;
1414         char    *pathname = NULL;
1415
1416         if (common_args_process(argc, argv, 1, 1,
1417                                 "print_working_directory", "", 0))
1418                 return;
1419
1420         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1421         if (retval) {
1422                 com_err(argv[0], retval,
1423                         "while trying to get pathname of cwd");
1424         }
1425         printf("[pwd]   INODE: %6u  PATH: %s\n",
1426                cwd, pathname ? pathname : "NULL");
1427         if (pathname) {
1428                 free(pathname);
1429                 pathname = NULL;
1430         }
1431         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1432         if (retval) {
1433                 com_err(argv[0], retval,
1434                         "while trying to get pathname of root");
1435         }
1436         printf("[root]  INODE: %6u  PATH: %s\n",
1437                root, pathname ? pathname : "NULL");
1438         if (pathname) {
1439                 free(pathname);
1440                 pathname = NULL;
1441         }
1442         return;
1443 }
1444
1445 #ifndef READ_ONLY
1446 static void make_link(char *sourcename, char *destname)
1447 {
1448         ext2_ino_t      ino;
1449         struct ext2_inode inode;
1450         int             retval;
1451         ext2_ino_t      dir;
1452         char            *dest, *cp, *base_name;
1453
1454         /*
1455          * Get the source inode
1456          */
1457         ino = string_to_inode(sourcename);
1458         if (!ino)
1459                 return;
1460         base_name = strrchr(sourcename, '/');
1461         if (base_name)
1462                 base_name++;
1463         else
1464                 base_name = sourcename;
1465         /*
1466          * Figure out the destination.  First see if it exists and is
1467          * a directory.
1468          */
1469         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1470                 dest = base_name;
1471         else {
1472                 /*
1473                  * OK, it doesn't exist.  See if it is
1474                  * '<dir>/basename' or 'basename'
1475                  */
1476                 cp = strrchr(destname, '/');
1477                 if (cp) {
1478                         *cp = 0;
1479                         dir = string_to_inode(destname);
1480                         if (!dir)
1481                                 return;
1482                         dest = cp+1;
1483                 } else {
1484                         dir = cwd;
1485                         dest = destname;
1486                 }
1487         }
1488
1489         if (debugfs_read_inode(ino, &inode, sourcename))
1490                 return;
1491
1492         retval = ext2fs_link(current_fs, dir, dest, ino,
1493                              ext2_file_type(inode.i_mode));
1494         if (retval)
1495                 com_err("make_link", retval, 0);
1496         return;
1497 }
1498
1499
1500 void do_link(int argc, char *argv[])
1501 {
1502         if (common_args_process(argc, argv, 3, 3, "link",
1503                                 "<source file> <dest_name>", CHECK_FS_RW))
1504                 return;
1505
1506         make_link(argv[1], argv[2]);
1507 }
1508
1509 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1510                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1511                             blk64_t ref_block EXT2FS_ATTR((unused)),
1512                             int ref_offset EXT2FS_ATTR((unused)),
1513                             void *private EXT2FS_ATTR((unused)))
1514 {
1515         blk64_t block;
1516
1517         block = *blocknr;
1518         ext2fs_block_alloc_stats2(fs, block, +1);
1519         return 0;
1520 }
1521
1522 void do_undel(int argc, char *argv[])
1523 {
1524         ext2_ino_t      ino;
1525         struct ext2_inode inode;
1526
1527         if (common_args_process(argc, argv, 2, 3, "undelete",
1528                                 "<inode_num> [dest_name]",
1529                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1530                 return;
1531
1532         ino = string_to_inode(argv[1]);
1533         if (!ino)
1534                 return;
1535
1536         if (debugfs_read_inode(ino, &inode, argv[1]))
1537                 return;
1538
1539         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1540                 com_err(argv[1], 0, "Inode is not marked as deleted");
1541                 return;
1542         }
1543
1544         /*
1545          * XXX this function doesn't handle changing the links count on the
1546          * parent directory when undeleting a directory.
1547          */
1548         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1549         inode.i_dtime = 0;
1550
1551         if (debugfs_write_inode(ino, &inode, argv[0]))
1552                 return;
1553
1554         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1555                               mark_blocks_proc, NULL);
1556
1557         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1558
1559         if (argc > 2)
1560                 make_link(argv[1], argv[2]);
1561 }
1562
1563 static void unlink_file_by_name(char *filename)
1564 {
1565         int             retval;
1566         ext2_ino_t      dir;
1567         char            *base_name;
1568
1569         base_name = strrchr(filename, '/');
1570         if (base_name) {
1571                 *base_name++ = '\0';
1572                 dir = string_to_inode(filename);
1573                 if (!dir)
1574                         return;
1575         } else {
1576                 dir = cwd;
1577                 base_name = filename;
1578         }
1579         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1580         if (retval)
1581                 com_err("unlink_file_by_name", retval, 0);
1582         return;
1583 }
1584
1585 void do_unlink(int argc, char *argv[])
1586 {
1587         if (common_args_process(argc, argv, 2, 2, "link",
1588                                 "<pathname>", CHECK_FS_RW))
1589                 return;
1590
1591         unlink_file_by_name(argv[1]);
1592 }
1593
1594 void do_copy_inode(int argc, char *argv[])
1595 {
1596         ext2_ino_t      src_ino, dest_ino;
1597         unsigned char   buf[4096];
1598
1599         if (common_args_process(argc, argv, 3, 3, "copy_inode",
1600                                 "<source file> <dest_name>", CHECK_FS_RW))
1601                 return;
1602
1603         src_ino = string_to_inode(argv[1]);
1604         if (!src_ino)
1605                 return;
1606
1607         dest_ino = string_to_inode(argv[2]);
1608         if (!dest_ino)
1609                 return;
1610
1611         if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
1612                                     argv[0], sizeof(buf)))
1613                 return;
1614
1615         if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
1616                                      argv[0], sizeof(buf)))
1617                 return;
1618 }
1619
1620 #endif /* READ_ONLY */
1621
1622 void do_find_free_block(int argc, char *argv[])
1623 {
1624         blk64_t free_blk, goal, first_free = 0;
1625         int             count;
1626         errcode_t       retval;
1627         char            *tmp;
1628
1629         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1630                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1631                 return;
1632         }
1633         if (check_fs_open(argv[0]))
1634                 return;
1635
1636         if (argc > 1) {
1637                 count = strtol(argv[1],&tmp,0);
1638                 if (*tmp) {
1639                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1640                         return;
1641                 }
1642         } else
1643                 count = 1;
1644
1645         if (argc > 2) {
1646                 goal = strtol(argv[2], &tmp, 0);
1647                 if (*tmp) {
1648                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1649                         return;
1650                 }
1651         }
1652         else
1653                 goal = current_fs->super->s_first_data_block;
1654
1655         printf("Free blocks found: ");
1656         free_blk = goal - 1;
1657         while (count-- > 0) {
1658                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1659                                            &free_blk);
1660                 if (first_free) {
1661                         if (first_free == free_blk)
1662                                 break;
1663                 } else
1664                         first_free = free_blk;
1665                 if (retval) {
1666                         com_err("ext2fs_new_block", retval, 0);
1667                         return;
1668                 } else
1669                         printf("%llu ", free_blk);
1670         }
1671         printf("\n");
1672 }
1673
1674 void do_find_free_inode(int argc, char *argv[])
1675 {
1676         ext2_ino_t      free_inode, dir;
1677         int             mode;
1678         int             retval;
1679         char            *tmp;
1680
1681         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1682                 com_err(argv[0], 0, "Usage: find_free_inode [dir [mode]]");
1683                 return;
1684         }
1685         if (check_fs_open(argv[0]))
1686                 return;
1687
1688         if (argc > 1) {
1689                 dir = strtol(argv[1], &tmp, 0);
1690                 if (*tmp) {
1691                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1692                         return;
1693                 }
1694         }
1695         else
1696                 dir = root;
1697         if (argc > 2) {
1698                 mode = strtol(argv[2], &tmp, 0);
1699                 if (*tmp) {
1700                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1701                         return;
1702                 }
1703         } else
1704                 mode = 010755;
1705
1706         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1707         if (retval)
1708                 com_err("ext2fs_new_inode", retval, 0);
1709         else
1710                 printf("Free inode found: %u\n", free_inode);
1711 }
1712
1713 #ifndef READ_ONLY
1714 void do_write(int argc, char *argv[])
1715 {
1716         errcode_t       retval;
1717
1718         if (common_args_process(argc, argv, 3, 3, "write",
1719                                 "<native file> <new file>", CHECK_FS_RW))
1720                 return;
1721
1722         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1723         if (retval)
1724                 com_err(argv[0], retval, 0);
1725 }
1726
1727 void do_mknod(int argc, char *argv[])
1728 {
1729         unsigned long   major, minor;
1730         errcode_t       retval;
1731         int             nr;
1732         struct stat     st;
1733
1734         if (check_fs_open(argv[0]))
1735                 return;
1736         if (argc < 3 || argv[2][1]) {
1737         usage:
1738                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1739                 return;
1740         }
1741
1742         minor = major = 0;
1743         switch (argv[2][0]) {
1744                 case 'p':
1745                         st.st_mode = S_IFIFO;
1746                         nr = 3;
1747                         break;
1748                 case 'c':
1749                         st.st_mode = S_IFCHR;
1750                         nr = 5;
1751                         break;
1752                 case 'b':
1753                         st.st_mode = S_IFBLK;
1754                         nr = 5;
1755                         break;
1756                 default:
1757                         nr = 0;
1758         }
1759
1760         if (nr == 5) {
1761                 major = strtoul(argv[3], argv+3, 0);
1762                 minor = strtoul(argv[4], argv+4, 0);
1763                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1764                         nr = 0;
1765         }
1766
1767         if (argc != nr)
1768                 goto usage;
1769
1770         st.st_rdev = makedev(major, minor);
1771         retval = do_mknod_internal(current_fs, cwd, argv[1],
1772                                    st.st_mode, st.st_rdev);
1773         if (retval)
1774                 com_err(argv[0], retval, 0);
1775 }
1776
1777 void do_mkdir(int argc, char *argv[])
1778 {
1779         errcode_t retval;
1780
1781         if (common_args_process(argc, argv, 2, 2, "mkdir",
1782                                 "<filename>", CHECK_FS_RW))
1783                 return;
1784
1785         retval = do_mkdir_internal(current_fs, cwd, argv[1], root);
1786         if (retval)
1787                 com_err(argv[0], retval, 0);
1788
1789 }
1790
1791 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1792                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1793                                blk64_t ref_block EXT2FS_ATTR((unused)),
1794                                int ref_offset EXT2FS_ATTR((unused)),
1795                                void *private)
1796 {
1797         blk64_t block = *blocknr;
1798         blk64_t *last_cluster = (blk64_t *)private;
1799         blk64_t cluster = EXT2FS_B2C(fs, block);
1800
1801         if (cluster == *last_cluster)
1802                 return 0;
1803
1804         *last_cluster = cluster;
1805
1806         ext2fs_block_alloc_stats2(fs, block, -1);
1807         return 0;
1808 }
1809
1810 static void kill_file_by_inode(ext2_ino_t inode)
1811 {
1812         struct ext2_inode inode_buf;
1813
1814         if (debugfs_read_inode(inode, &inode_buf, 0))
1815                 return;
1816         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1817         if (debugfs_write_inode(inode, &inode_buf, 0))
1818                 return;
1819         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1820                 blk64_t last_cluster = 0;
1821                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1822                                       NULL, release_blocks_proc, &last_cluster);
1823         }
1824         printf("\n");
1825         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1826                                   LINUX_S_ISDIR(inode_buf.i_mode));
1827 }
1828
1829
1830 void do_kill_file(int argc, char *argv[])
1831 {
1832         ext2_ino_t inode_num;
1833
1834         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1835                 return;
1836
1837         kill_file_by_inode(inode_num);
1838 }
1839
1840 void do_rm(int argc, char *argv[])
1841 {
1842         int retval;
1843         ext2_ino_t inode_num;
1844         struct ext2_inode inode;
1845
1846         if (common_args_process(argc, argv, 2, 2, "rm",
1847                                 "<filename>", CHECK_FS_RW))
1848                 return;
1849
1850         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1851         if (retval) {
1852                 com_err(argv[0], retval, "while trying to resolve filename");
1853                 return;
1854         }
1855
1856         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1857                 return;
1858
1859         if (LINUX_S_ISDIR(inode.i_mode)) {
1860                 com_err(argv[0], 0, "file is a directory");
1861                 return;
1862         }
1863
1864         --inode.i_links_count;
1865         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1866                 return;
1867
1868         unlink_file_by_name(argv[1]);
1869         if (inode.i_links_count == 0)
1870                 kill_file_by_inode(inode_num);
1871 }
1872
1873 struct rd_struct {
1874         ext2_ino_t      parent;
1875         int             empty;
1876 };
1877
1878 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1879                       int       entry EXT2FS_ATTR((unused)),
1880                       struct ext2_dir_entry *dirent,
1881                       int       offset EXT2FS_ATTR((unused)),
1882                       int       blocksize EXT2FS_ATTR((unused)),
1883                       char      *buf EXT2FS_ATTR((unused)),
1884                       void      *private)
1885 {
1886         struct rd_struct *rds = (struct rd_struct *) private;
1887
1888         if (dirent->inode == 0)
1889                 return 0;
1890         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1891                 return 0;
1892         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1893             (dirent->name[1] == '.')) {
1894                 rds->parent = dirent->inode;
1895                 return 0;
1896         }
1897         rds->empty = 0;
1898         return 0;
1899 }
1900
1901 void do_rmdir(int argc, char *argv[])
1902 {
1903         int retval;
1904         ext2_ino_t inode_num;
1905         struct ext2_inode inode;
1906         struct rd_struct rds;
1907
1908         if (common_args_process(argc, argv, 2, 2, "rmdir",
1909                                 "<filename>", CHECK_FS_RW))
1910                 return;
1911
1912         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1913         if (retval) {
1914                 com_err(argv[0], retval, "while trying to resolve filename");
1915                 return;
1916         }
1917
1918         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1919                 return;
1920
1921         if (!LINUX_S_ISDIR(inode.i_mode)) {
1922                 com_err(argv[0], 0, "file is not a directory");
1923                 return;
1924         }
1925
1926         rds.parent = 0;
1927         rds.empty = 1;
1928
1929         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1930                                     0, rmdir_proc, &rds);
1931         if (retval) {
1932                 com_err(argv[0], retval, "while iterating over directory");
1933                 return;
1934         }
1935         if (rds.empty == 0) {
1936                 com_err(argv[0], 0, "directory not empty");
1937                 return;
1938         }
1939
1940         inode.i_links_count = 0;
1941         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1942                 return;
1943
1944         unlink_file_by_name(argv[1]);
1945         kill_file_by_inode(inode_num);
1946
1947         if (rds.parent) {
1948                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1949                         return;
1950                 if (inode.i_links_count > 1)
1951                         inode.i_links_count--;
1952                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1953                         return;
1954         }
1955 }
1956 #endif /* READ_ONLY */
1957
1958 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1959                             char *argv[] EXT2FS_ATTR((unused)))
1960 {
1961         if (current_fs)
1962                 printf("Open mode: read-%s\n",
1963                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1964         printf("Filesystem in use: %s\n",
1965                current_fs ? current_fs->device_name : "--none--");
1966 }
1967
1968 #ifndef READ_ONLY
1969 void do_expand_dir(int argc, char *argv[])
1970 {
1971         ext2_ino_t inode;
1972         int retval;
1973
1974         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1975                 return;
1976
1977         retval = ext2fs_expand_dir(current_fs, inode);
1978         if (retval)
1979                 com_err("ext2fs_expand_dir", retval, 0);
1980         return;
1981 }
1982
1983 void do_features(int argc, char *argv[])
1984 {
1985         int     i;
1986
1987         if (check_fs_open(argv[0]))
1988                 return;
1989
1990         if ((argc != 1) && check_fs_read_write(argv[0]))
1991                 return;
1992         for (i=1; i < argc; i++) {
1993                 if (e2p_edit_feature(argv[i],
1994                                      &current_fs->super->s_feature_compat, 0))
1995                         com_err(argv[0], 0, "Unknown feature: %s\n",
1996                                 argv[i]);
1997                 else
1998                         ext2fs_mark_super_dirty(current_fs);
1999         }
2000         print_features(current_fs->super, stdout);
2001 }
2002 #endif /* READ_ONLY */
2003
2004 void do_bmap(int argc, char *argv[])
2005 {
2006         ext2_ino_t      ino;
2007         blk64_t         blk, pblk = 0;
2008         int             c, err, flags = 0, ret_flags = 0;
2009         errcode_t       errcode;
2010
2011         if (check_fs_open(argv[0]))
2012                 return;
2013
2014         reset_getopt();
2015         while ((c = getopt (argc, argv, "a")) != EOF) {
2016                 switch (c) {
2017                 case 'a':
2018                         flags |= BMAP_ALLOC;
2019                         break;
2020                 default:
2021                         goto print_usage;
2022                 }
2023         }
2024
2025         if (argc <= optind+1) {
2026         print_usage:
2027                 com_err(0, 0,
2028                         "Usage: bmap [-a] <file> logical_blk [physical_blk]");
2029                 return;
2030         }
2031
2032         ino = string_to_inode(argv[optind++]);
2033         if (!ino)
2034                 return;
2035         err = strtoblk(argv[0], argv[optind++], "logical block", &blk);
2036         if (err)
2037                 return;
2038
2039         if (argc > optind+1)
2040                 goto print_usage;
2041
2042         if (argc == optind+1) {
2043                 err = strtoblk(argv[0], argv[optind++],
2044                                "physical block", &pblk);
2045                 if (err)
2046                         return;
2047                 if (flags & BMAP_ALLOC) {
2048                         com_err(0, 0, "Can't set and allocate a block");
2049                         return;
2050                 }
2051                 flags |= BMAP_SET;
2052         }
2053
2054         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, flags, blk,
2055                                &ret_flags, &pblk);
2056         if (errcode) {
2057                 com_err(argv[0], errcode,
2058                         "while mapping logical block %llu\n", blk);
2059                 return;
2060         }
2061         printf("%llu", pblk);
2062         if (ret_flags & BMAP_RET_UNINIT)
2063                 fputs(" (uninit)", stdout);
2064         fputc('\n', stdout);
2065 }
2066
2067 void do_imap(int argc, char *argv[])
2068 {
2069         ext2_ino_t      ino;
2070         unsigned long   group, block, block_nr, offset;
2071
2072         if (common_args_process(argc, argv, 2, 2, argv[0],
2073                                 "<file>", 0))
2074                 return;
2075         ino = string_to_inode(argv[1]);
2076         if (!ino)
2077                 return;
2078
2079         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2080         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2081                 EXT2_INODE_SIZE(current_fs->super);
2082         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2083         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2084                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2085                         group);
2086                 return;
2087         }
2088         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2089                 block;
2090         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2091
2092         printf("Inode %d is part of block group %lu\n"
2093                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2094                block_nr, offset);
2095
2096 }
2097
2098 void do_idump(int argc, char *argv[])
2099 {
2100         struct ext2_inode_large *inode;
2101         ext2_ino_t      ino;
2102         unsigned char   *buf;
2103         errcode_t       err;
2104         unsigned int    isize, size, offset = 0;
2105         int             c, mode = 0;
2106
2107         reset_getopt();
2108         while ((c = getopt (argc, argv, "bex")) != EOF) {
2109                 if (mode || c == '?') {
2110                         com_err(argv[0], 0,
2111                                 "Usage: inode_dump [-b]|[-e] <file>");
2112                         return;
2113                 }
2114                 mode = c;
2115         }
2116         if (optind != argc-1)
2117                 return;
2118
2119         if (check_fs_open(argv[0]))
2120                 return;
2121
2122         ino = string_to_inode(argv[optind]);
2123         if (!ino)
2124                 return;
2125
2126         isize = EXT2_INODE_SIZE(current_fs->super);
2127         err = ext2fs_get_mem(isize, &buf);
2128         if (err) {
2129                 com_err(argv[0], err, "while allocating memory");
2130                 return;
2131         }
2132
2133         err = ext2fs_read_inode_full(current_fs, ino,
2134                                      (struct ext2_inode *)buf, isize);
2135         if (err) {
2136                 com_err(argv[0], err, "while reading inode %u", ino);
2137                 goto err;
2138         }
2139
2140         inode = (struct ext2_inode_large *) buf;
2141         size = isize;
2142         switch (mode) {
2143         case 'b':
2144                 offset = ((char *) (&inode->i_block)) - ((char *) buf);
2145                 size = sizeof(inode->i_block);
2146                 break;
2147         case 'x':
2148         case 'e':
2149                 if (size <= EXT2_GOOD_OLD_INODE_SIZE) {
2150                         com_err(argv[0], 0, "No extra space in inode");
2151                         goto err;
2152                 }
2153                 offset = EXT2_GOOD_OLD_INODE_SIZE + inode->i_extra_isize;
2154                 if (offset > size)
2155                         goto err;
2156                 size -= offset;
2157                 break;
2158         }
2159         if (mode == 'x')
2160                 raw_inode_xattr_dump(stdout, buf + offset, size);
2161         else
2162                 do_byte_hexdump(stdout, buf + offset, size);
2163 err:
2164         ext2fs_free_mem(&buf);
2165 }
2166
2167 #ifndef READ_ONLY
2168 void do_set_current_time(int argc, char *argv[])
2169 {
2170         __s64 now;
2171
2172         if (common_args_process(argc, argv, 2, 2, argv[0],
2173                                 "<time>", 0))
2174                 return;
2175
2176         now = string_to_time(argv[1]);
2177         if (now == -1) {
2178                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2179                         argv[1]);
2180                 return;
2181
2182         } else {
2183                 printf("Setting current time to %s\n", time_to_string(now));
2184                 current_fs->now = now;
2185         }
2186 }
2187 #endif /* READ_ONLY */
2188
2189 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2190 {
2191         int compat, bit, ret;
2192         unsigned int feature_mask;
2193
2194         if (name) {
2195                 if (feature_type == E2P_FS_FEATURE)
2196                         ret = e2p_string2feature(name, &compat, &feature_mask);
2197                 else
2198                         ret = e2p_jrnl_string2feature(name, &compat,
2199                                                       &feature_mask);
2200                 if (ret)
2201                         return ret;
2202
2203                 if (!(supp[compat] & feature_mask))
2204                         return 1;
2205         } else {
2206                 for (compat = 0; compat < 3; compat++) {
2207                         for (bit = 0, feature_mask = 1; bit < 32;
2208                              bit++, feature_mask <<= 1) {
2209                                 if (supp[compat] & feature_mask) {
2210                                         if (feature_type == E2P_FS_FEATURE)
2211                                                 fprintf(stdout, " %s",
2212                                                 e2p_feature2string(compat,
2213                                                 feature_mask));
2214                                         else
2215                                                 fprintf(stdout, " %s",
2216                                                 e2p_jrnl_feature2string(compat,
2217                                                 feature_mask));
2218                                 }
2219                         }
2220                 }
2221                 fprintf(stdout, "\n");
2222         }
2223
2224         return 0;
2225 }
2226
2227 void do_supported_features(int argc, char *argv[])
2228 {
2229         int     ret;
2230         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2231                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2232                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2233         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2234                                  JFS_KNOWN_INCOMPAT_FEATURES,
2235                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2236
2237         if (argc > 1) {
2238                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2239                 if (ret) {
2240                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2241                                                 argv[1]);
2242                 }
2243                 if (ret)
2244                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2245                 else
2246                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2247         } else {
2248                 fprintf(stdout, "Supported features:");
2249                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2250                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2251         }
2252 }
2253
2254 #ifndef READ_ONLY
2255 void do_punch(int argc, char *argv[])
2256 {
2257         ext2_ino_t      ino;
2258         blk64_t         start, end;
2259         int             err;
2260         errcode_t       errcode;
2261
2262         if (common_args_process(argc, argv, 3, 4, argv[0],
2263                                 "<file> start_blk [end_blk]",
2264                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2265                 return;
2266
2267         ino = string_to_inode(argv[1]);
2268         if (!ino)
2269                 return;
2270         err = strtoblk(argv[0], argv[2], "logical block", &start);
2271         if (err)
2272                 return;
2273         if (argc == 4) {
2274                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2275                 if (err)
2276                         return;
2277         } else
2278                 end = ~0;
2279
2280         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2281
2282         if (errcode) {
2283                 com_err(argv[0], errcode,
2284                         "while truncating inode %u from %llu to %llu\n", ino,
2285                         (unsigned long long) start, (unsigned long long) end);
2286                 return;
2287         }
2288 }
2289
2290 void do_fallocate(int argc, char *argv[])
2291 {
2292         ext2_ino_t      ino;
2293         blk64_t         start, end;
2294         int             err;
2295         errcode_t       errcode;
2296
2297         if (common_args_process(argc, argv, 3, 4, argv[0],
2298                                 "<file> start_blk [end_blk]",
2299                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2300                 return;
2301
2302         ino = string_to_inode(argv[1]);
2303         if (!ino)
2304                 return;
2305         err = strtoblk(argv[0], argv[2], "logical block", &start);
2306         if (err)
2307                 return;
2308         if (argc == 4) {
2309                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2310                 if (err)
2311                         return;
2312         } else
2313                 end = ~0;
2314
2315         errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
2316                                    ino, NULL, ~0ULL, start, end - start + 1);
2317
2318         if (errcode) {
2319                 com_err(argv[0], errcode,
2320                         "while fallocating inode %u from %llu to %llu\n", ino,
2321                         (unsigned long long) start, (unsigned long long) end);
2322                 return;
2323         }
2324 }
2325 #endif /* READ_ONLY */
2326
2327 void do_symlink(int argc, char *argv[])
2328 {
2329         errcode_t       retval;
2330
2331         if (common_args_process(argc, argv, 3, 3, "symlink",
2332                                 "<filename> <target>", CHECK_FS_RW))
2333                 return;
2334
2335         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2336         if (retval)
2337                 com_err(argv[0], retval, 0);
2338
2339 }
2340
2341 #if CONFIG_MMP
2342 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2343 {
2344         struct mmp_struct *mmp_s;
2345         unsigned long long mmp_block;
2346         time_t t;
2347         errcode_t retval = 0;
2348
2349         if (check_fs_open(argv[0]))
2350                 return;
2351
2352         if (argc > 1) {
2353                 char *end = NULL;
2354                 mmp_block = strtoull(argv[1], &end, 0);
2355                 if (end == argv[0] || mmp_block == 0) {
2356                         fprintf(stderr, "%s: invalid MMP block '%s' given\n",
2357                                 argv[0], argv[1]);
2358                         return;
2359                 }
2360         } else {
2361                 mmp_block = current_fs->super->s_mmp_block;
2362         }
2363
2364         if (mmp_block == 0) {
2365                 fprintf(stderr, "%s: MMP: not active on this filesystem.\n",
2366                         argv[0]);
2367                 return;
2368         }
2369
2370         if (current_fs->mmp_buf == NULL) {
2371                 retval = ext2fs_get_mem(current_fs->blocksize,
2372                                         &current_fs->mmp_buf);
2373                 if (retval) {
2374                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2375                         return;
2376                 }
2377         }
2378
2379         mmp_s = current_fs->mmp_buf;
2380
2381         retval = ext2fs_mmp_read(current_fs, mmp_block, current_fs->mmp_buf);
2382         if (retval) {
2383                 com_err(argv[0], retval, "reading MMP block %llu.\n",
2384                         mmp_block);
2385                 return;
2386         }
2387
2388         t = mmp_s->mmp_time;
2389         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2390         fprintf(stdout, "update_interval: %d\n",
2391                 current_fs->super->s_mmp_update_interval);
2392         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2393         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2394         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2395         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2396         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2397         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2398         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2399 }
2400 #else
2401 void do_dump_mmp(int argc EXT2FS_ATTR((unused)),
2402                  char *argv[] EXT2FS_ATTR((unused)))
2403 {
2404         fprintf(stdout, "MMP is unsupported, please recompile with "
2405                         "--enable-mmp\n");
2406 }
2407 #endif
2408
2409 static int source_file(const char *cmd_file, int ss_idx)
2410 {
2411         FILE            *f;
2412         char            buf[BUFSIZ];
2413         char            *cp;
2414         int             exit_status = 0;
2415         int             retval;
2416
2417         if (strcmp(cmd_file, "-") == 0)
2418                 f = stdin;
2419         else {
2420                 f = fopen(cmd_file, "r");
2421                 if (!f) {
2422                         perror(cmd_file);
2423                         exit(1);
2424                 }
2425         }
2426         fflush(stdout);
2427         fflush(stderr);
2428         setbuf(stdout, NULL);
2429         setbuf(stderr, NULL);
2430         while (!feof(f)) {
2431                 if (fgets(buf, sizeof(buf), f) == NULL)
2432                         break;
2433                 cp = strchr(buf, '\n');
2434                 if (cp)
2435                         *cp = 0;
2436                 cp = strchr(buf, '\r');
2437                 if (cp)
2438                         *cp = 0;
2439                 printf("debugfs: %s\n", buf);
2440                 retval = ss_execute_line(ss_idx, buf);
2441                 if (retval) {
2442                         ss_perror(ss_idx, retval, buf);
2443                         exit_status++;
2444                 }
2445         }
2446         if (f != stdin)
2447                 fclose(f);
2448         return exit_status;
2449 }
2450
2451 int main(int argc, char **argv)
2452 {
2453         int             retval;
2454         const char      *usage =
2455                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2456                 "[-R request] [-d data_source_device] [-i] [-n] [-D] [-V] ["
2457 #ifndef READ_ONLY
2458                 "[-w] [-z undo_file] "
2459 #endif
2460                 "[-c]] [device]";
2461         int             c;
2462         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2463         char            *request = 0;
2464         int             exit_status = 0;
2465         char            *cmd_file = 0;
2466         blk64_t         superblock = 0;
2467         blk64_t         blocksize = 0;
2468         int             catastrophic = 0;
2469         char            *data_filename = 0;
2470 #ifdef READ_ONLY
2471         const char      *opt_string = "nicR:f:b:s:Vd:D";
2472 #else
2473         const char      *opt_string = "niwcR:f:b:s:Vd:Dz:";
2474         char            *undo_file = NULL;
2475 #endif
2476 #ifdef CONFIG_JBD_DEBUG
2477         char            *jbd_debug;
2478 #endif
2479
2480         if (debug_prog_name == 0)
2481 #ifdef READ_ONLY
2482                 debug_prog_name = "rdebugfs";
2483 #else
2484                 debug_prog_name = "debugfs";
2485 #endif
2486         add_error_table(&et_ext2_error_table);
2487         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2488                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2489
2490 #ifdef CONFIG_JBD_DEBUG
2491         jbd_debug = ss_safe_getenv("DEBUGFS_JBD_DEBUG");
2492         if (jbd_debug) {
2493                 int res = sscanf(jbd_debug, "%d", &journal_enable_debug);
2494
2495                 if (res != 1) {
2496                         fprintf(stderr,
2497                                 "DEBUGFS_JBD_DEBUG \"%s\" not an integer\n\n",
2498                                 jbd_debug);
2499                         exit(1);
2500                 }
2501         }
2502 #endif
2503         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2504                 switch (c) {
2505                 case 'R':
2506                         request = optarg;
2507                         break;
2508                 case 'f':
2509                         cmd_file = optarg;
2510                         break;
2511                 case 'd':
2512                         data_filename = optarg;
2513                         break;
2514                 case 'i':
2515                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2516                         break;
2517                 case 'n':
2518                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2519                         break;
2520 #ifndef READ_ONLY
2521                 case 'w':
2522                         open_flags |= EXT2_FLAG_RW;
2523                         break;
2524 #endif
2525                 case 'D':
2526                         open_flags |= EXT2_FLAG_DIRECT_IO;
2527                         break;
2528                 case 'b':
2529                         blocksize = parse_ulong(optarg, argv[0],
2530                                                 "block size", 0);
2531                         break;
2532                 case 's':
2533                         retval = strtoblk(argv[0], optarg,
2534                                           "superblock block number",
2535                                           &superblock);
2536                         if (retval)
2537                                 return 1;
2538                         break;
2539                 case 'c':
2540                         catastrophic = 1;
2541                         break;
2542                 case 'V':
2543                         /* Print version number and exit */
2544                         fprintf(stderr, "\tUsing %s\n",
2545                                 error_message(EXT2_ET_BASE));
2546                         exit(0);
2547                 case 'z':
2548                         undo_file = optarg;
2549                         break;
2550                 default:
2551                         com_err(argv[0], 0, usage, debug_prog_name);
2552                         return 1;
2553                 }
2554         }
2555         if (optind < argc)
2556                 open_filesystem(argv[optind], open_flags,
2557                                 superblock, blocksize, catastrophic,
2558                                 data_filename, undo_file);
2559
2560         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2561                                        &debug_cmds, &retval);
2562         if (retval) {
2563                 ss_perror(sci_idx, retval, "creating invocation");
2564                 exit(1);
2565         }
2566         ss_get_readline(sci_idx);
2567
2568         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2569         if (retval) {
2570                 ss_perror(sci_idx, retval, "adding standard requests");
2571                 exit (1);
2572         }
2573         if (extra_cmds)
2574                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2575         if (retval) {
2576                 ss_perror(sci_idx, retval, "adding extra requests");
2577                 exit (1);
2578         }
2579         if (request) {
2580                 retval = 0;
2581                 retval = ss_execute_line(sci_idx, request);
2582                 if (retval) {
2583                         ss_perror(sci_idx, retval, request);
2584                         exit_status++;
2585                 }
2586         } else if (cmd_file) {
2587                 exit_status = source_file(cmd_file, sci_idx);
2588         } else {
2589                 ss_listen(sci_idx);
2590         }
2591
2592         ss_delete_invocation(sci_idx);
2593
2594         if (current_fs)
2595                 close_filesystem();
2596
2597         remove_error_table(&et_ext2_error_table);
2598         return exit_status;
2599 }