debugfs/debugfs.c

   1 /*
   2  * debugfs.c --- a program which allows you to attach an ext2fs
   3  * filesystem and play with it.
   4  *
   5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
   6  * under the terms of the GNU Public License.
   7  *
   8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
   9  */
  10
  11 #include "config.h"
  12 #include <stdio.h>
  13 #include <unistd.h>
  14 #include <stdlib.h>
  15 #include <ctype.h>
  16 #include <string.h>
  17 #include <time.h>
  18 #include <libgen.h>
  19 #ifdef HAVE_GETOPT_H
  20 #include <getopt.h>
  21 #else
  22 extern int optind;
  23 extern char *optarg;
  24 #endif
  25 #ifdef HAVE_ERRNO_H
  26 #include <errno.h>
  27 #endif
  28 #include <fcntl.h>
  29 #ifdef HAVE_SYS_SYSMACROS_H
  30 #include <sys/sysmacros.h>
  31 #endif
  32
  33 #include "debugfs.h"
  34 #include "uuid/uuid.h"
  35 #include "e2p/e2p.h"
  36
  37 #include <ext2fs/ext2_ext_attr.h>
  38
  39 #include "../version.h"
  40 #include "jfs_user.h"
  41 #include "support/plausible.h"
  42
  43 #ifndef BUFSIZ
  44 #define BUFSIZ 8192
  45 #endif
  46
  47 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
  48 int journal_enable_debug = -1;
  49 #endif
  50
  51 ss_request_table *extra_cmds;
  52 const char *debug_prog_name;
  53 int sci_idx;
  54
  55 ext2_filsys     current_fs;
  56 quota_ctx_t     current_qctx;
  57 ext2_ino_t      root, cwd;
  58
  59 static int debugfs_setup_tdb(const char *device_name, char *undo_file,
  60                              io_manager *io_ptr)
  61 {
  62         errcode_t retval = ENOMEM;
  63         char *tdb_dir = NULL, *tdb_file = NULL;
  64         char *dev_name, *tmp_name;
  65
  66         /* (re)open a specific undo file */
  67         if (undo_file && undo_file[0] != 0) {
  68                 retval = set_undo_io_backing_manager(*io_ptr);
  69                 if (retval)
  70                         goto err;
  71                 *io_ptr = undo_io_manager;
  72                 retval = set_undo_io_backup_file(undo_file);
  73                 if (retval)
  74                         goto err;
  75                 printf("Overwriting existing filesystem; this can be undone "
  76                         "using the command:\n"
  77                         "    e2undo %s %s\n\n",
  78                         undo_file, device_name);
  79                 return retval;
  80         }
  81
  82         /*
  83          * Configuration via a conf file would be
  84          * nice
  85          */
  86         tdb_dir = ss_safe_getenv("E2FSPROGS_UNDO_DIR");
  87         if (!tdb_dir)
  88                 tdb_dir = "/var/lib/e2fsprogs";
  89
  90         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
  91             access(tdb_dir, W_OK))
  92                 return 0;
  93
  94         tmp_name = strdup(device_name);
  95         if (!tmp_name)
  96                 goto errout;
  97         dev_name = basename(tmp_name);
  98         tdb_file = malloc(strlen(tdb_dir) + 9 + strlen(dev_name) + 7 + 1);
  99         if (!tdb_file) {
 100                 free(tmp_name);
 101                 goto errout;
 102         }
 103         sprintf(tdb_file, "%s/debugfs-%s.e2undo", tdb_dir, dev_name);
 104         free(tmp_name);
 105
 106         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
 107                 retval = errno;
 108                 com_err("debugfs", retval,
 109                         "while trying to delete %s", tdb_file);
 110                 goto errout;
 111         }
 112
 113         retval = set_undo_io_backing_manager(*io_ptr);
 114         if (retval)
 115                 goto errout;
 116         *io_ptr = undo_io_manager;
 117         retval = set_undo_io_backup_file(tdb_file);
 118         if (retval)
 119                 goto errout;
 120         printf("Overwriting existing filesystem; this can be undone "
 121                 "using the command:\n"
 122                 "    e2undo %s %s\n\n", tdb_file, device_name);
 123
 124         free(tdb_file);
 125         return 0;
 126 errout:
 127         free(tdb_file);
 128 err:
 129         com_err("debugfs", retval, "while trying to setup undo file\n");
 130         return retval;
 131 }
 132
 133 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
 134                             blk64_t blocksize, int catastrophic,
 135                             char *data_filename, char *undo_file)
 136 {
 137         int     retval;
 138         io_channel data_io = 0;
 139         io_manager io_ptr = unix_io_manager;
 140
 141         if (superblock != 0 && blocksize == 0) {
 142                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
 143                 current_fs = NULL;
 144                 return;
 145         }
 146
 147         if (data_filename) {
 148                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
 149                         com_err(device, 0,
 150                                 "The -d option is only valid when reading an e2image file");
 151                         current_fs = NULL;
 152                         return;
 153                 }
 154                 retval = unix_io_manager->open(data_filename, 0, &data_io);
 155                 if (retval) {
 156                         com_err(data_filename, 0, "while opening data source");
 157                         current_fs = NULL;
 158                         return;
 159                 }
 160         }
 161
 162         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
 163                 com_err(device, 0,
 164                         "opening read-only because of catastrophic mode");
 165                 open_flags &= ~EXT2_FLAG_RW;
 166         }
 167         if (catastrophic)
 168                 open_flags |= EXT2_FLAG_SKIP_MMP;
 169
 170         if (undo_file) {
 171                 retval = debugfs_setup_tdb(device, undo_file, &io_ptr);
 172                 if (retval)
 173                         exit(1);
 174         }
 175
 176 try_open_again:
 177         retval = ext2fs_open(device, open_flags, superblock, blocksize,
 178                              io_ptr, &current_fs);
 179         if (retval && !(open_flags & EXT2_FLAG_IGNORE_CSUM_ERRORS)) {
 180                 open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
 181                 printf("Checksum errors in superblock!  Retrying...\n");
 182                 goto try_open_again;
 183         }
 184         if (retval) {
 185                 com_err(device, retval, "while opening filesystem");
 186                 if (retval == EXT2_ET_BAD_MAGIC)
 187                         check_plausibility(device, CHECK_FS_EXIST, NULL);
 188                 current_fs = NULL;
 189                 return;
 190         }
 191         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 192
 193         if (catastrophic)
 194                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 195         else {
 196                 retval = ext2fs_read_bitmaps(current_fs);
 197                 if (retval) {
 198                         com_err(device, retval,
 199                                 "while reading allocation bitmaps");
 200                         goto errout;
 201                 }
 202         }
 203
 204         if (data_io) {
 205                 retval = ext2fs_set_data_io(current_fs, data_io);
 206                 if (retval) {
 207                         com_err(device, retval,
 208                                 "while setting data source");
 209                         goto errout;
 210                 }
 211         }
 212
 213         root = cwd = EXT2_ROOT_INO;
 214         return;
 215
 216 errout:
 217         retval = ext2fs_close_free(&current_fs);
 218         if (retval)
 219                 com_err(device, retval, "while trying to close filesystem");
 220 }
 221
 222 void do_open_filesys(int argc, char **argv)
 223 {
 224         int     c, err;
 225         int     catastrophic = 0;
 226         blk64_t superblock = 0;
 227         blk64_t blocksize = 0;
 228         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 229         char    *data_filename = 0;
 230         char    *undo_file = NULL;
 231
 232         reset_getopt();
 233         while ((c = getopt(argc, argv, "iwfecb:s:d:Dz:")) != EOF) {
 234                 switch (c) {
 235                 case 'i':
 236                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 237                         break;
 238                 case 'w':
 239 #ifdef READ_ONLY
 240                         goto print_usage;
 241 #else
 242                         open_flags |= EXT2_FLAG_RW;
 243 #endif /* READ_ONLY */
 244                         break;
 245                 case 'f':
 246                         open_flags |= EXT2_FLAG_FORCE;
 247                         break;
 248                 case 'e':
 249                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 250                         break;
 251                 case 'c':
 252                         catastrophic = 1;
 253                         break;
 254                 case 'd':
 255                         data_filename = optarg;
 256                         break;
 257                 case 'D':
 258                         open_flags |= EXT2_FLAG_DIRECT_IO;
 259                         break;
 260                 case 'b':
 261                         blocksize = parse_ulong(optarg, argv[0],
 262                                                 "block size", &err);
 263                         if (err)
 264                                 return;
 265                         break;
 266                 case 's':
 267                         err = strtoblk(argv[0], optarg,
 268                                        "superblock block number", &superblock);
 269                         if (err)
 270                                 return;
 271                         break;
 272                 case 'z':
 273                         undo_file = optarg;
 274                         break;
 275                 default:
 276                         goto print_usage;
 277                 }
 278         }
 279         if (optind != argc-1) {
 280                 goto print_usage;
 281         }
 282         if (check_fs_not_open(argv[0]))
 283                 return;
 284         open_filesystem(argv[optind], open_flags,
 285                         superblock, blocksize, catastrophic,
 286                         data_filename, undo_file);
 287         return;
 288
 289 print_usage:
 290         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 291                 "[-d image_filename] [-z undo_file] [-c] [-i] [-f] [-e] [-D] "
 292 #ifndef READ_ONLY
 293                 "[-w] "
 294 #endif
 295                 "<device>\n", argv[0]);
 296 }
 297
 298 void do_lcd(int argc, char **argv)
 299 {
 300         if (argc != 2) {
 301                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 302                 return;
 303         }
 304
 305         if (chdir(argv[1]) == -1) {
 306                 com_err(argv[0], errno,
 307                         "while trying to change native directory to %s",
 308                         argv[1]);
 309                 return;
 310         }
 311 }
 312
 313 static void close_filesystem(NOARGS)
 314 {
 315         int     retval;
 316
 317         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 318                 retval = ext2fs_write_inode_bitmap(current_fs);
 319                 if (retval)
 320                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 321         }
 322         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 323                 retval = ext2fs_write_block_bitmap(current_fs);
 324                 if (retval)
 325                         com_err("ext2fs_write_block_bitmap", retval, 0);
 326         }
 327         if (current_qctx)
 328                 quota_release_context(&current_qctx);
 329         retval = ext2fs_close_free(&current_fs);
 330         if (retval)
 331                 com_err("ext2fs_close", retval, 0);
 332         return;
 333 }
 334
 335 void do_close_filesys(int argc, char **argv)
 336 {
 337         int     c;
 338
 339         if (check_fs_open(argv[0]))
 340                 return;
 341
 342         reset_getopt();
 343         while ((c = getopt (argc, argv, "a")) != EOF) {
 344                 switch (c) {
 345                 case 'a':
 346                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 347                         break;
 348                 default:
 349                         goto print_usage;
 350                 }
 351         }
 352
 353         if (argc > optind) {
 354         print_usage:
 355                 com_err(0, 0, "Usage: close_filesys [-a]");
 356                 return;
 357         }
 358
 359         close_filesystem();
 360 }
 361
 362 #ifndef READ_ONLY
 363 void do_init_filesys(int argc, char **argv)
 364 {
 365         struct ext2_super_block param;
 366         errcode_t       retval;
 367         int             err;
 368         blk64_t         blocks;
 369
 370         if (common_args_process(argc, argv, 3, 3, "initialize",
 371                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 372                 return;
 373
 374         memset(&param, 0, sizeof(struct ext2_super_block));
 375         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 376         if (err)
 377                 return;
 378         ext2fs_blocks_count_set(&param, blocks);
 379         retval = ext2fs_initialize(argv[1], 0, &param,
 380                                    unix_io_manager, &current_fs);
 381         if (retval) {
 382                 com_err(argv[1], retval, "while initializing filesystem");
 383                 current_fs = NULL;
 384                 return;
 385         }
 386         root = cwd = EXT2_ROOT_INO;
 387         return;
 388 }
 389
 390 static void print_features(struct ext2_super_block * s, FILE *f)
 391 {
 392         int     i, j, printed=0;
 393         __u32   *mask = &s->s_feature_compat, m;
 394
 395         fputs("Filesystem features:", f);
 396         for (i=0; i <3; i++,mask++) {
 397                 for (j=0,m=1; j < 32; j++, m<<=1) {
 398                         if (*mask & m) {
 399                                 fprintf(f, " %s", e2p_feature2string(i, m));
 400                                 printed++;
 401                         }
 402                 }
 403         }
 404         if (printed == 0)
 405                 fputs("(none)", f);
 406         fputs("\n", f);
 407 }
 408 #endif /* READ_ONLY */
 409
 410 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 411                           const char *str, int *first, FILE *f)
 412 {
 413         if (ext2fs_bg_flags_test(fs, group, mask)) {
 414                 if (*first) {
 415                         fputs("           [", f);
 416                         *first = 0;
 417                 } else
 418                         fputs(", ", f);
 419                 fputs(str, f);
 420         }
 421 }
 422
 423 void do_show_super_stats(int argc, char *argv[])
 424 {
 425         const char *units ="block";
 426         dgrp_t  i;
 427         FILE    *out;
 428         int     c, header_only = 0;
 429         int     numdirs = 0, first, gdt_csum;
 430
 431         reset_getopt();
 432         while ((c = getopt (argc, argv, "h")) != EOF) {
 433                 switch (c) {
 434                 case 'h':
 435                         header_only++;
 436                         break;
 437                 default:
 438                         goto print_usage;
 439                 }
 440         }
 441         if (optind != argc) {
 442                 goto print_usage;
 443         }
 444         if (check_fs_open(argv[0]))
 445                 return;
 446         out = open_pager();
 447
 448         if (ext2fs_has_feature_bigalloc(current_fs->super))
 449                 units = "cluster";
 450
 451         list_super2(current_fs->super, out);
 452         if (ext2fs_has_feature_metadata_csum(current_fs->super) &&
 453             !ext2fs_superblock_csum_verify(current_fs,
 454                                            current_fs->super)) {
 455                 __u32 orig_csum = current_fs->super->s_checksum;
 456
 457                 ext2fs_superblock_csum_set(current_fs,
 458                                            current_fs->super);
 459                 fprintf(out, "Expected Checksum:        0x%08x\n",
 460                         current_fs->super->s_checksum);
 461                 current_fs->super->s_checksum = orig_csum;
 462         }
 463         for (i=0; i < current_fs->group_desc_count; i++)
 464                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 465         fprintf(out, "Directories:              %d\n", numdirs);
 466
 467         if (header_only) {
 468                 close_pager(out);
 469                 return;
 470         }
 471
 472         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 473         for (i = 0; i < current_fs->group_desc_count; i++) {
 474                 fprintf(out, " Group %2d: block bitmap at %llu, "
 475                         "inode bitmap at %llu, "
 476                         "inode table at %llu\n"
 477                         "           %u free %s%s, "
 478                         "%u free %s, "
 479                         "%u used %s%s",
 480                         i, ext2fs_block_bitmap_loc(current_fs, i),
 481                         ext2fs_inode_bitmap_loc(current_fs, i),
 482                         ext2fs_inode_table_loc(current_fs, i),
 483                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 484                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 485                         "s" : "",
 486                         ext2fs_bg_free_inodes_count(current_fs, i),
 487                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 488                         "inodes" : "inode",
 489                         ext2fs_bg_used_dirs_count(current_fs, i),
 490                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 491                                 : "directory", gdt_csum ? ", " : "\n");
 492                 if (gdt_csum)
 493                         fprintf(out, "%u unused %s\n",
 494                                 ext2fs_bg_itable_unused(current_fs, i),
 495                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 496                                 "inodes" : "inode");
 497                 first = 1;
 498                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 499                               &first, out);
 500                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 501                               &first, out);
 502                 if (gdt_csum) {
 503                         fprintf(out, "%sChecksum 0x%04x",
 504                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 505                         first = 0;
 506                 }
 507                 if (!first)
 508                         fputs("]\n", out);
 509         }
 510         close_pager(out);
 511         return;
 512 print_usage:
 513         fprintf(stderr, "%s: Usage: show_super_stats [-h]\n", argv[0]);
 514 }
 515
 516 #ifndef READ_ONLY
 517 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 518                       char **argv EXT2FS_ATTR((unused)))
 519 {
 520         if (check_fs_open(argv[0]))
 521                 return;
 522         if (check_fs_read_write(argv[0]))
 523                 return;
 524
 525         if (argv[1] && !strcmp(argv[1], "-clean"))
 526                 current_fs->super->s_state |= EXT2_VALID_FS;
 527         else
 528                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 529         ext2fs_mark_super_dirty(current_fs);
 530 }
 531 #endif /* READ_ONLY */
 532
 533 struct list_blocks_struct {
 534         FILE            *f;
 535         e2_blkcnt_t     total;
 536         blk64_t         first_block, last_block;
 537         e2_blkcnt_t     first_bcnt, last_bcnt;
 538         e2_blkcnt_t     first;
 539 };
 540
 541 static void finish_range(struct list_blocks_struct *lb)
 542 {
 543         if (lb->first_block == 0)
 544                 return;
 545         if (lb->first)
 546                 lb->first = 0;
 547         else
 548                 fprintf(lb->f, ", ");
 549         if (lb->first_block == lb->last_block)
 550                 fprintf(lb->f, "(%lld):%llu",
 551                         (long long)lb->first_bcnt, lb->first_block);
 552         else
 553                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 554                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 555                         lb->first_block, lb->last_block);
 556         lb->first_block = 0;
 557 }
 558
 559 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 560                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 561                             blk64_t ref_block EXT2FS_ATTR((unused)),
 562                             int ref_offset EXT2FS_ATTR((unused)),
 563                             void *private)
 564 {
 565         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 566
 567         lb->total++;
 568         if (blockcnt >= 0) {
 569                 /*
 570                  * See if we can add on to the existing range (if it exists)
 571                  */
 572                 if (lb->first_block &&
 573                     (lb->last_block+1 == *blocknr) &&
 574                     (lb->last_bcnt+1 == blockcnt)) {
 575                         lb->last_block = *blocknr;
 576                         lb->last_bcnt = blockcnt;
 577                         return 0;
 578                 }
 579                 /*
 580                  * Start a new range.
 581                  */
 582                 finish_range(lb);
 583                 lb->first_block = lb->last_block = *blocknr;
 584                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 585                 return 0;
 586         }
 587         /*
 588          * Not a normal block.  Always force a new range.
 589          */
 590         finish_range(lb);
 591         if (lb->first)
 592                 lb->first = 0;
 593         else
 594                 fprintf(lb->f, ", ");
 595         if (blockcnt == -1)
 596                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 597         else if (blockcnt == -2)
 598                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 599         else if (blockcnt == -3)
 600                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 601         return 0;
 602 }
 603
 604 static void internal_dump_inode_extra(FILE *out,
 605                                       const char *prefix EXT2FS_ATTR((unused)),
 606                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 607                                       struct ext2_inode_large *inode)
 608 {
 609         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 610         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 611                         EXT2_GOOD_OLD_INODE_SIZE) {
 612                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 613                                 inode->i_extra_isize);
 614                 return;
 615         }
 616 }
 617
 618 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 619 {
 620         struct list_blocks_struct lb;
 621
 622         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 623         lb.total = 0;
 624         lb.first_block = 0;
 625         lb.f = f;
 626         lb.first = 1;
 627         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 628                               list_blocks_proc, (void *)&lb);
 629         finish_range(&lb);
 630         if (lb.total)
 631                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 632         fprintf(f,"\n");
 633 }
 634
 635 static int int_log10(unsigned long long arg)
 636 {
 637         int     l = 0;
 638
 639         arg = arg / 10;
 640         while (arg) {
 641                 l++;
 642                 arg = arg / 10;
 643         }
 644         return l;
 645 }
 646
 647 #define DUMP_LEAF_EXTENTS       0x01
 648 #define DUMP_NODE_EXTENTS       0x02
 649 #define DUMP_EXTENT_TABLE       0x04
 650
 651 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 652                          int flags, int logical_width, int physical_width)
 653 {
 654         ext2_extent_handle_t    handle;
 655         struct ext2fs_extent    extent;
 656         struct ext2_extent_info info;
 657         int                     op = EXT2_EXTENT_ROOT;
 658         unsigned int            printed = 0;
 659         errcode_t               errcode;
 660
 661         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 662         if (errcode)
 663                 return;
 664
 665         if (flags & DUMP_EXTENT_TABLE)
 666                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 667                         (logical_width*2)+3, "Logical",
 668                         (physical_width*2)+3, "Physical");
 669         else
 670                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 671
 672         while (1) {
 673                 errcode = ext2fs_extent_get(handle, op, &extent);
 674
 675                 if (errcode)
 676                         break;
 677
 678                 op = EXT2_EXTENT_NEXT;
 679
 680                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 681                         continue;
 682
 683                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 684                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 685                                 continue;
 686                 } else {
 687                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 688                                 continue;
 689                 }
 690
 691                 errcode = ext2fs_extent_get_info(handle, &info);
 692                 if (errcode)
 693                         continue;
 694
 695                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 696                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 697                                 continue;
 698
 699                         if (flags & DUMP_EXTENT_TABLE) {
 700                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 701                                         "%*llu%*s %6u\n",
 702                                         info.curr_level, info.max_depth,
 703                                         info.curr_entry, info.num_entries,
 704                                         logical_width,
 705                                         extent.e_lblk,
 706                                         logical_width,
 707                                         extent.e_lblk + (extent.e_len - 1),
 708                                         physical_width,
 709                                         extent.e_pblk,
 710                                         physical_width+3, "", extent.e_len);
 711                                 continue;
 712                         }
 713
 714                         fprintf(f, "%s(ETB%d):%lld",
 715                                 printed ? ", " : "", info.curr_level,
 716                                 extent.e_pblk);
 717                         printed = 1;
 718                         continue;
 719                 }
 720
 721                 if (flags & DUMP_EXTENT_TABLE) {
 722                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 723                                 "%*llu - %*llu %6u %s\n",
 724                                 info.curr_level, info.max_depth,
 725                                 info.curr_entry, info.num_entries,
 726                                 logical_width,
 727                                 extent.e_lblk,
 728                                 logical_width,
 729                                 extent.e_lblk + (extent.e_len - 1),
 730                                 physical_width,
 731                                 extent.e_pblk,
 732                                 physical_width,
 733                                 extent.e_pblk + (extent.e_len - 1),
 734                                 extent.e_len,
 735                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 736                                         "Uninit" : "");
 737                         continue;
 738                 }
 739
 740                 if (extent.e_len == 0)
 741                         continue;
 742                 else if (extent.e_len == 1)
 743                         fprintf(f,
 744                                 "%s(%lld%s):%lld",
 745                                 printed ? ", " : "",
 746                                 extent.e_lblk,
 747                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 748                                 "[u]" : "",
 749                                 extent.e_pblk);
 750                 else
 751                         fprintf(f,
 752                                 "%s(%lld-%lld%s):%lld-%lld",
 753                                 printed ? ", " : "",
 754                                 extent.e_lblk,
 755                                 extent.e_lblk + (extent.e_len - 1),
 756                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 757                                         "[u]" : "",
 758                                 extent.e_pblk,
 759                                 extent.e_pblk + (extent.e_len - 1));
 760                 printed = 1;
 761         }
 762         if (printed)
 763                 fprintf(f, "\n");
 764         ext2fs_extent_free(handle);
 765 }
 766
 767 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 768 {
 769         errcode_t retval;
 770         size_t size;
 771
 772         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 773         if (!retval)
 774                 fprintf(out, "%sSize of inline data: %zu\n", prefix, size);
 775 }
 776
 777 static void dump_inline_symlink(FILE *out, ext2_ino_t inode_num,
 778                                 struct ext2_inode *inode, const char *prefix)
 779 {
 780         errcode_t retval;
 781         char *buf = NULL;
 782         size_t size;
 783
 784         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 785         if (retval)
 786                 goto out;
 787
 788         retval = ext2fs_get_memzero(size + 1, &buf);
 789         if (retval)
 790                 goto out;
 791
 792         retval = ext2fs_inline_data_get(current_fs, inode_num,
 793                                         inode, buf, &size);
 794         if (retval)
 795                 goto out;
 796
 797         fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 798                 (int)size, buf);
 799 out:
 800         if (buf)
 801                 ext2fs_free_mem(&buf);
 802         if (retval)
 803                 com_err(__func__, retval, "while dumping link destination");
 804 }
 805
 806 void internal_dump_inode(FILE *out, const char *prefix,
 807                          ext2_ino_t inode_num, struct ext2_inode *inode,
 808                          int do_dump_blocks)
 809 {
 810         const char *i_type;
 811         char frag, fsize;
 812         int os = current_fs->super->s_creator_os;
 813         struct ext2_inode_large *large_inode;
 814         int is_large_inode = 0;
 815
 816         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 817                 is_large_inode = 1;
 818         large_inode = (struct ext2_inode_large *) inode;
 819
 820         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 821         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 822         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 823         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 824         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 825         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 826         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 827         else i_type = "bad type";
 828         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 829         fprintf(out, "%sMode:  0%03o   Flags: 0x%x\n",
 830                 prefix, inode->i_mode & 07777, inode->i_flags);
 831         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 832                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 833                         prefix, inode->i_generation, large_inode->i_version_hi,
 834                         inode->osd1.linux1.l_i_version);
 835         } else {
 836                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 837                         inode->i_generation, inode->osd1.linux1.l_i_version);
 838         }
 839         fprintf(out, "%sUser: %5d   Group: %5d",
 840                 prefix, inode_uid(*inode), inode_gid(*inode));
 841         if (is_large_inode && large_inode->i_extra_isize >= 32)
 842                 fprintf(out, "   Project: %5d", large_inode->i_projid);
 843         fputs("   Size: ", out);
 844         if (LINUX_S_ISREG(inode->i_mode))
 845                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 846         else
 847                 fprintf(out, "%d\n", inode->i_size);
 848         if (os == EXT2_OS_HURD)
 849                 fprintf(out,
 850                         "%sFile ACL: %d Translator: %d\n",
 851                         prefix,
 852                         inode->i_file_acl,
 853                         inode->osd1.hurd1.h_i_translator);
 854         else
 855                 fprintf(out, "%sFile ACL: %llu\n",
 856                         prefix,
 857                         inode->i_file_acl | ((long long)
 858                                 (inode->osd2.linux2.l_i_file_acl_high) << 32));
 859         if (os != EXT2_OS_HURD)
 860                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 861                         prefix, inode->i_links_count,
 862                         (((unsigned long long)
 863                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 864                         inode->i_blocks);
 865         else
 866                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 867                         prefix, inode->i_links_count, inode->i_blocks);
 868         switch (os) {
 869             case EXT2_OS_HURD:
 870                 frag = inode->osd2.hurd2.h_i_frag;
 871                 fsize = inode->osd2.hurd2.h_i_fsize;
 872                 break;
 873             default:
 874                 frag = fsize = 0;
 875         }
 876         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 877                 prefix, inode->i_faddr, frag, fsize);
 878         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 879                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 880                         inode->i_ctime, large_inode->i_ctime_extra,
 881                         inode_time_to_string(inode->i_ctime,
 882                                              large_inode->i_ctime_extra));
 883                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 884                         inode->i_atime, large_inode->i_atime_extra,
 885                         inode_time_to_string(inode->i_atime,
 886                                              large_inode->i_atime_extra));
 887                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 888                         inode->i_mtime, large_inode->i_mtime_extra,
 889                         inode_time_to_string(inode->i_mtime,
 890                                              large_inode->i_mtime_extra));
 891                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 892                         large_inode->i_crtime, large_inode->i_crtime_extra,
 893                         inode_time_to_string(large_inode->i_crtime,
 894                                              large_inode->i_crtime_extra));
 895                 if (inode->i_dtime)
 896                         fprintf(out, "%s dtime: 0x%08x:(%08x) -- %s", prefix,
 897                                 large_inode->i_dtime, large_inode->i_ctime_extra,
 898                                 inode_time_to_string(inode->i_dtime,
 899                                                      large_inode->i_ctime_extra));
 900         } else {
 901                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 902                         time_to_string((__s32) inode->i_ctime));
 903                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 904                         time_to_string((__s32) inode->i_atime));
 905                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 906                         time_to_string((__s32) inode->i_mtime));
 907                 if (inode->i_dtime)
 908                         fprintf(out, "%sdtime: 0x%08x -- %s", prefix,
 909                                 inode->i_dtime,
 910                                 time_to_string((__s32) inode->i_dtime));
 911         }
 912         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 913                 internal_dump_inode_extra(out, prefix, inode_num,
 914                                           (struct ext2_inode_large *) inode);
 915         dump_inode_attributes(out, inode_num);
 916         if (ext2fs_has_feature_metadata_csum(current_fs->super)) {
 917                 __u32 crc = inode->i_checksum_lo;
 918                 if (is_large_inode &&
 919                     large_inode->i_extra_isize >=
 920                                 (offsetof(struct ext2_inode_large,
 921                                           i_checksum_hi) -
 922                                  EXT2_GOOD_OLD_INODE_SIZE))
 923                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 924                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 925         }
 926
 927         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_is_fast_symlink(inode))
 928                 fprintf(out, "%sFast link dest: \"%.*s\"\n", prefix,
 929                         (int)EXT2_I_SIZE(inode), (char *)inode->i_block);
 930         else if (LINUX_S_ISLNK(inode->i_mode) &&
 931                    (inode->i_flags & EXT4_INLINE_DATA_FL))
 932                 dump_inline_symlink(out, inode_num, inode, prefix);
 933         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 934                 int major, minor;
 935                 const char *devnote;
 936
 937                 if (inode->i_block[0]) {
 938                         major = (inode->i_block[0] >> 8) & 255;
 939                         minor = inode->i_block[0] & 255;
 940                         devnote = "";
 941                 } else {
 942                         major = (inode->i_block[1] & 0xfff00) >> 8;
 943                         minor = ((inode->i_block[1] & 0xff) |
 944                                  ((inode->i_block[1] >> 12) & 0xfff00));
 945                         devnote = "(New-style) ";
 946                 }
 947                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 948                         devnote, major, minor, major, minor);
 949         } else if (do_dump_blocks) {
 950                 if (inode->i_flags & EXT4_EXTENTS_FL)
 951                         dump_extents(out, prefix, inode_num,
 952                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 953                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 954                         dump_inline_data(out, prefix, inode_num);
 955                 else
 956                         dump_blocks(out, prefix, inode_num);
 957         }
 958 }
 959
 960 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 961 {
 962         FILE    *out;
 963
 964         out = open_pager();
 965         internal_dump_inode(out, "", inode_num, inode, 1);
 966         close_pager(out);
 967 }
 968
 969 void do_stat(int argc, char *argv[])
 970 {
 971         ext2_ino_t      inode;
 972         struct ext2_inode * inode_buf;
 973
 974         if (check_fs_open(argv[0]))
 975                 return;
 976
 977         inode_buf = (struct ext2_inode *)
 978                         malloc(EXT2_INODE_SIZE(current_fs->super));
 979         if (!inode_buf) {
 980                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 981                 return;
 982         }
 983
 984         if (common_inode_args_process(argc, argv, &inode, 0)) {
 985                 free(inode_buf);
 986                 return;
 987         }
 988
 989         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 990                                         EXT2_INODE_SIZE(current_fs->super))) {
 991                 free(inode_buf);
 992                 return;
 993         }
 994
 995         dump_inode(inode, inode_buf);
 996         free(inode_buf);
 997         return;
 998 }
 999
1000 void do_dump_extents(int argc, char **argv)
1001 {
1002         struct ext2_inode inode;
1003         ext2_ino_t      ino;
1004         FILE            *out;
1005         int             c, flags = 0;
1006         int             logical_width;
1007         int             physical_width;
1008
1009         reset_getopt();
1010         while ((c = getopt(argc, argv, "nl")) != EOF) {
1011                 switch (c) {
1012                 case 'n':
1013                         flags |= DUMP_NODE_EXTENTS;
1014                         break;
1015                 case 'l':
1016                         flags |= DUMP_LEAF_EXTENTS;
1017                         break;
1018                 }
1019         }
1020
1021         if (argc != optind + 1) {
1022                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
1023                 return;
1024         }
1025
1026         if (flags == 0)
1027                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
1028         flags |= DUMP_EXTENT_TABLE;
1029
1030         if (check_fs_open(argv[0]))
1031                 return;
1032
1033         ino = string_to_inode(argv[optind]);
1034         if (ino == 0)
1035                 return;
1036
1037         if (debugfs_read_inode(ino, &inode, argv[0]))
1038                 return;
1039
1040         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
1041                 fprintf(stderr, "%s: does not uses extent block maps\n",
1042                         argv[optind]);
1043                 return;
1044         }
1045
1046         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
1047                                   current_fs->blocksize) + 1;
1048         if (logical_width < 5)
1049                 logical_width = 5;
1050         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
1051         if (physical_width < 5)
1052                 physical_width = 5;
1053
1054         out = open_pager();
1055         dump_extents(out, "", ino, flags, logical_width, physical_width);
1056         close_pager(out);
1057         return;
1058 }
1059
1060 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
1061                              blk64_t *blocknr,
1062                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1063                              blk64_t ref_block EXT2FS_ATTR((unused)),
1064                              int ref_offset EXT2FS_ATTR((unused)),
1065                              void *private EXT2FS_ATTR((unused)))
1066 {
1067         printf("%llu ", *blocknr);
1068         return 0;
1069 }
1070
1071 void do_blocks(int argc, char *argv[])
1072 {
1073         ext2_ino_t      inode;
1074
1075         if (check_fs_open(argv[0]))
1076                 return;
1077
1078         if (common_inode_args_process(argc, argv, &inode, 0)) {
1079                 return;
1080         }
1081
1082         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1083                               print_blocks_proc, NULL);
1084         fputc('\n', stdout);
1085         return;
1086 }
1087
1088 void do_chroot(int argc, char *argv[])
1089 {
1090         ext2_ino_t inode;
1091         int retval;
1092
1093         if (common_inode_args_process(argc, argv, &inode, 0))
1094                 return;
1095
1096         retval = ext2fs_check_directory(current_fs, inode);
1097         if (retval)  {
1098                 com_err(argv[1], retval, 0);
1099                 return;
1100         }
1101         root = inode;
1102 }
1103
1104 #ifndef READ_ONLY
1105 void do_clri(int argc, char *argv[])
1106 {
1107         ext2_ino_t inode;
1108         struct ext2_inode inode_buf;
1109
1110         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1111                 return;
1112
1113         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1114                 return;
1115         memset(&inode_buf, 0, sizeof(inode_buf));
1116         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1117                 return;
1118 }
1119
1120 void do_freei(int argc, char *argv[])
1121 {
1122         unsigned int    len = 1;
1123         int             err = 0;
1124         ext2_ino_t      inode;
1125
1126         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1127                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1128                 return;
1129         if (check_fs_read_write(argv[0]))
1130                 return;
1131
1132         inode = string_to_inode(argv[1]);
1133         if (!inode)
1134                 return;
1135
1136         if (argc == 3) {
1137                 len = parse_ulong(argv[2], argv[0], "length", &err);
1138                 if (err)
1139                         return;
1140         }
1141
1142         if (len == 1 &&
1143             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1144                 com_err(argv[0], 0, "Warning: inode already clear");
1145         while (len-- > 0)
1146                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1147         ext2fs_mark_ib_dirty(current_fs);
1148 }
1149
1150 void do_seti(int argc, char *argv[])
1151 {
1152         unsigned int    len = 1;
1153         int             err = 0;
1154         ext2_ino_t      inode;
1155
1156         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1157                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1158                 return;
1159         if (check_fs_read_write(argv[0]))
1160                 return;
1161
1162         inode = string_to_inode(argv[1]);
1163         if (!inode)
1164                 return;
1165
1166         if (argc == 3) {
1167                 len = parse_ulong(argv[2], argv[0], "length", &err);
1168                 if (err)
1169                         return;
1170         }
1171
1172         if ((len == 1) &&
1173             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1174                 com_err(argv[0], 0, "Warning: inode already set");
1175         while (len-- > 0)
1176                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1177         ext2fs_mark_ib_dirty(current_fs);
1178 }
1179 #endif /* READ_ONLY */
1180
1181 void do_testi(int argc, char *argv[])
1182 {
1183         ext2_ino_t inode;
1184
1185         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1186                 return;
1187
1188         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1189                 printf("Inode %u is marked in use\n", inode);
1190         else
1191                 printf("Inode %u is not in use\n", inode);
1192 }
1193
1194 #ifndef READ_ONLY
1195 void do_freeb(int argc, char *argv[])
1196 {
1197         blk64_t block;
1198         blk64_t count = 1;
1199
1200         if (common_block_args_process(argc, argv, &block, &count))
1201                 return;
1202         if (check_fs_read_write(argv[0]))
1203                 return;
1204         while (count-- > 0) {
1205                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1206                         com_err(argv[0], 0, "Warning: block %llu already clear",
1207                                 block);
1208                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1209                 block++;
1210         }
1211         ext2fs_mark_bb_dirty(current_fs);
1212 }
1213
1214 void do_setb(int argc, char *argv[])
1215 {
1216         blk64_t block;
1217         blk64_t count = 1;
1218
1219         if (common_block_args_process(argc, argv, &block, &count))
1220                 return;
1221         if (check_fs_read_write(argv[0]))
1222                 return;
1223         while (count-- > 0) {
1224                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1225                         com_err(argv[0], 0, "Warning: block %llu already set",
1226                                 block);
1227                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1228                 block++;
1229         }
1230         ext2fs_mark_bb_dirty(current_fs);
1231 }
1232 #endif /* READ_ONLY */
1233
1234 void do_testb(int argc, char *argv[])
1235 {
1236         blk64_t block;
1237         blk64_t count = 1;
1238
1239         if (common_block_args_process(argc, argv, &block, &count))
1240                 return;
1241         while (count-- > 0) {
1242                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1243                         printf("Block %llu marked in use\n", block);
1244                 else
1245                         printf("Block %llu not in use\n", block);
1246                 block++;
1247         }
1248 }
1249
1250 #ifndef READ_ONLY
1251 static void modify_u8(char *com, const char *prompt,
1252                       const char *format, __u8 *val)
1253 {
1254         char buf[200];
1255         unsigned long v;
1256         char *tmp;
1257
1258         sprintf(buf, format, *val);
1259         printf("%30s    [%s] ", prompt, buf);
1260         if (!fgets(buf, sizeof(buf), stdin))
1261                 return;
1262         if (buf[strlen (buf) - 1] == '\n')
1263                 buf[strlen (buf) - 1] = '\0';
1264         if (!buf[0])
1265                 return;
1266         v = strtoul(buf, &tmp, 0);
1267         if (*tmp)
1268                 com_err(com, 0, "Bad value - %s", buf);
1269         else
1270                 *val = v;
1271 }
1272
1273 static void modify_u16(char *com, const char *prompt,
1274                        const char *format, __u16 *val)
1275 {
1276         char buf[200];
1277         unsigned long v;
1278         char *tmp;
1279
1280         sprintf(buf, format, *val);
1281         printf("%30s    [%s] ", prompt, buf);
1282         if (!fgets(buf, sizeof(buf), stdin))
1283                 return;
1284         if (buf[strlen (buf) - 1] == '\n')
1285                 buf[strlen (buf) - 1] = '\0';
1286         if (!buf[0])
1287                 return;
1288         v = strtoul(buf, &tmp, 0);
1289         if (*tmp)
1290                 com_err(com, 0, "Bad value - %s", buf);
1291         else
1292                 *val = v;
1293 }
1294
1295 static void modify_u32(char *com, const char *prompt,
1296                        const char *format, __u32 *val)
1297 {
1298         char buf[200];
1299         unsigned long v;
1300         char *tmp;
1301
1302         sprintf(buf, format, *val);
1303         printf("%30s    [%s] ", prompt, buf);
1304         if (!fgets(buf, sizeof(buf), stdin))
1305                 return;
1306         if (buf[strlen (buf) - 1] == '\n')
1307                 buf[strlen (buf) - 1] = '\0';
1308         if (!buf[0])
1309                 return;
1310         v = strtoul(buf, &tmp, 0);
1311         if (*tmp)
1312                 com_err(com, 0, "Bad value - %s", buf);
1313         else
1314                 *val = v;
1315 }
1316
1317
1318 void do_modify_inode(int argc, char *argv[])
1319 {
1320         struct ext2_inode inode;
1321         ext2_ino_t      inode_num;
1322         int             i;
1323         unsigned char   *frag, *fsize;
1324         char            buf[80];
1325         int             os;
1326         const char      *hex_format = "0x%x";
1327         const char      *octal_format = "0%o";
1328         const char      *decimal_format = "%d";
1329         const char      *unsignedlong_format = "%lu";
1330
1331         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1332                 return;
1333
1334         os = current_fs->super->s_creator_os;
1335
1336         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1337                 return;
1338
1339         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1340         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1341         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1342         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1343         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1344         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1345         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1346         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1347         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1348         if (os == EXT2_OS_LINUX)
1349                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1350                            &inode.osd2.linux2.l_i_blocks_hi);
1351         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1352         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1353         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1354 #if 0
1355         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1356 #endif
1357         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1358
1359         modify_u32(argv[0], "High 32bits of size", decimal_format,
1360                    &inode.i_size_high);
1361
1362         if (os == EXT2_OS_HURD)
1363                 modify_u32(argv[0], "Translator Block",
1364                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1365
1366         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1367         switch (os) {
1368             case EXT2_OS_HURD:
1369                 frag = &inode.osd2.hurd2.h_i_frag;
1370                 fsize = &inode.osd2.hurd2.h_i_fsize;
1371                 break;
1372             default:
1373                 frag = fsize = 0;
1374         }
1375         if (frag)
1376                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1377         if (fsize)
1378                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1379
1380         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1381                 sprintf(buf, "Direct Block #%d", i);
1382                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1383         }
1384         modify_u32(argv[0], "Indirect Block", decimal_format,
1385                     &inode.i_block[EXT2_IND_BLOCK]);
1386         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1387                     &inode.i_block[EXT2_DIND_BLOCK]);
1388         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1389                     &inode.i_block[EXT2_TIND_BLOCK]);
1390         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1391                 return;
1392 }
1393 #endif /* READ_ONLY */
1394
1395 void do_change_working_dir(int argc, char *argv[])
1396 {
1397         ext2_ino_t      inode;
1398         int             retval;
1399
1400         if (common_inode_args_process(argc, argv, &inode, 0))
1401                 return;
1402
1403         retval = ext2fs_check_directory(current_fs, inode);
1404         if (retval) {
1405                 com_err(argv[1], retval, 0);
1406                 return;
1407         }
1408         cwd = inode;
1409         return;
1410 }
1411
1412 void do_print_working_directory(int argc, char *argv[])
1413 {
1414         int     retval;
1415         char    *pathname = NULL;
1416
1417         if (common_args_process(argc, argv, 1, 1,
1418                                 "print_working_directory", "", 0))
1419                 return;
1420
1421         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1422         if (retval) {
1423                 com_err(argv[0], retval,
1424                         "while trying to get pathname of cwd");
1425         }
1426         printf("[pwd]   INODE: %6u  PATH: %s\n",
1427                cwd, pathname ? pathname : "NULL");
1428         if (pathname) {
1429                 free(pathname);
1430                 pathname = NULL;
1431         }
1432         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1433         if (retval) {
1434                 com_err(argv[0], retval,
1435                         "while trying to get pathname of root");
1436         }
1437         printf("[root]  INODE: %6u  PATH: %s\n",
1438                root, pathname ? pathname : "NULL");
1439         if (pathname) {
1440                 free(pathname);
1441                 pathname = NULL;
1442         }
1443         return;
1444 }
1445
1446 #ifndef READ_ONLY
1447 static void make_link(char *sourcename, char *destname)
1448 {
1449         ext2_ino_t      ino;
1450         struct ext2_inode inode;
1451         int             retval;
1452         ext2_ino_t      dir;
1453         char            *dest, *cp, *base_name;
1454
1455         /*
1456          * Get the source inode
1457          */
1458         ino = string_to_inode(sourcename);
1459         if (!ino)
1460                 return;
1461         base_name = strrchr(sourcename, '/');
1462         if (base_name)
1463                 base_name++;
1464         else
1465                 base_name = sourcename;
1466         /*
1467          * Figure out the destination.  First see if it exists and is
1468          * a directory.
1469          */
1470         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1471                 dest = base_name;
1472         else {
1473                 /*
1474                  * OK, it doesn't exist.  See if it is
1475                  * '<dir>/basename' or 'basename'
1476                  */
1477                 cp = strrchr(destname, '/');
1478                 if (cp) {
1479                         *cp = 0;
1480                         dir = string_to_inode(destname);
1481                         if (!dir)
1482                                 return;
1483                         dest = cp+1;
1484                 } else {
1485                         dir = cwd;
1486                         dest = destname;
1487                 }
1488         }
1489
1490         if (debugfs_read_inode(ino, &inode, sourcename))
1491                 return;
1492
1493         retval = ext2fs_link(current_fs, dir, dest, ino,
1494                              ext2_file_type(inode.i_mode));
1495         if (retval)
1496                 com_err("make_link", retval, 0);
1497         return;
1498 }
1499
1500
1501 void do_link(int argc, char *argv[])
1502 {
1503         if (common_args_process(argc, argv, 3, 3, "link",
1504                                 "<source file> <dest_name>", CHECK_FS_RW))
1505                 return;
1506
1507         make_link(argv[1], argv[2]);
1508 }
1509
1510 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1511                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1512                             blk64_t ref_block EXT2FS_ATTR((unused)),
1513                             int ref_offset EXT2FS_ATTR((unused)),
1514                             void *private EXT2FS_ATTR((unused)))
1515 {
1516         blk64_t block;
1517
1518         block = *blocknr;
1519         ext2fs_block_alloc_stats2(fs, block, +1);
1520         return 0;
1521 }
1522
1523 void do_undel(int argc, char *argv[])
1524 {
1525         ext2_ino_t      ino;
1526         struct ext2_inode inode;
1527
1528         if (common_args_process(argc, argv, 2, 3, "undelete",
1529                                 "<inode_num> [dest_name]",
1530                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1531                 return;
1532
1533         ino = string_to_inode(argv[1]);
1534         if (!ino)
1535                 return;
1536
1537         if (debugfs_read_inode(ino, &inode, argv[1]))
1538                 return;
1539
1540         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1541                 com_err(argv[1], 0, "Inode is not marked as deleted");
1542                 return;
1543         }
1544
1545         /*
1546          * XXX this function doesn't handle changing the links count on the
1547          * parent directory when undeleting a directory.
1548          */
1549         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1550         inode.i_dtime = 0;
1551
1552         if (debugfs_write_inode(ino, &inode, argv[0]))
1553                 return;
1554
1555         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1556                               mark_blocks_proc, NULL);
1557
1558         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1559
1560         if (argc > 2)
1561                 make_link(argv[1], argv[2]);
1562 }
1563
1564 static void unlink_file_by_name(char *filename)
1565 {
1566         int             retval;
1567         ext2_ino_t      dir;
1568         char            *base_name;
1569
1570         base_name = strrchr(filename, '/');
1571         if (base_name) {
1572                 *base_name++ = '\0';
1573                 dir = string_to_inode(filename);
1574                 if (!dir)
1575                         return;
1576         } else {
1577                 dir = cwd;
1578                 base_name = filename;
1579         }
1580         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1581         if (retval)
1582                 com_err("unlink_file_by_name", retval, 0);
1583         return;
1584 }
1585
1586 void do_unlink(int argc, char *argv[])
1587 {
1588         if (common_args_process(argc, argv, 2, 2, "link",
1589                                 "<pathname>", CHECK_FS_RW))
1590                 return;
1591
1592         unlink_file_by_name(argv[1]);
1593 }
1594
1595 void do_copy_inode(int argc, char *argv[])
1596 {
1597         ext2_ino_t      src_ino, dest_ino;
1598         unsigned char   buf[4096];
1599
1600         if (common_args_process(argc, argv, 3, 3, "copy_inode",
1601                                 "<source file> <dest_name>", CHECK_FS_RW))
1602                 return;
1603
1604         src_ino = string_to_inode(argv[1]);
1605         if (!src_ino)
1606                 return;
1607
1608         dest_ino = string_to_inode(argv[2]);
1609         if (!dest_ino)
1610                 return;
1611
1612         if (debugfs_read_inode_full(src_ino, (struct ext2_inode *) buf,
1613                                     argv[0], sizeof(buf)))
1614                 return;
1615
1616         if (debugfs_write_inode_full(dest_ino, (struct ext2_inode *) buf,
1617                                      argv[0], sizeof(buf)))
1618                 return;
1619 }
1620
1621 #endif /* READ_ONLY */
1622
1623 void do_find_free_block(int argc, char *argv[])
1624 {
1625         blk64_t free_blk, goal, first_free = 0;
1626         int             count;
1627         errcode_t       retval;
1628         char            *tmp;
1629
1630         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1631                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1632                 return;
1633         }
1634         if (check_fs_open(argv[0]))
1635                 return;
1636
1637         if (argc > 1) {
1638                 count = strtol(argv[1],&tmp,0);
1639                 if (*tmp) {
1640                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1641                         return;
1642                 }
1643         } else
1644                 count = 1;
1645
1646         if (argc > 2) {
1647                 goal = strtol(argv[2], &tmp, 0);
1648                 if (*tmp) {
1649                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1650                         return;
1651                 }
1652         }
1653         else
1654                 goal = current_fs->super->s_first_data_block;
1655
1656         printf("Free blocks found: ");
1657         free_blk = goal - 1;
1658         while (count-- > 0) {
1659                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1660                                            &free_blk);
1661                 if (first_free) {
1662                         if (first_free == free_blk)
1663                                 break;
1664                 } else
1665                         first_free = free_blk;
1666                 if (retval) {
1667                         com_err("ext2fs_new_block", retval, 0);
1668                         return;
1669                 } else
1670                         printf("%llu ", free_blk);
1671         }
1672         printf("\n");
1673 }
1674
1675 void do_find_free_inode(int argc, char *argv[])
1676 {
1677         ext2_ino_t      free_inode, dir;
1678         int             mode;
1679         int             retval;
1680         char            *tmp;
1681
1682         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1683                 com_err(argv[0], 0, "Usage: find_free_inode [dir [mode]]");
1684                 return;
1685         }
1686         if (check_fs_open(argv[0]))
1687                 return;
1688
1689         if (argc > 1) {
1690                 dir = strtol(argv[1], &tmp, 0);
1691                 if (*tmp) {
1692                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1693                         return;
1694                 }
1695         }
1696         else
1697                 dir = root;
1698         if (argc > 2) {
1699                 mode = strtol(argv[2], &tmp, 0);
1700                 if (*tmp) {
1701                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1702                         return;
1703                 }
1704         } else
1705                 mode = 010755;
1706
1707         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1708         if (retval)
1709                 com_err("ext2fs_new_inode", retval, 0);
1710         else
1711                 printf("Free inode found: %u\n", free_inode);
1712 }
1713
1714 #ifndef READ_ONLY
1715 void do_write(int argc, char *argv[])
1716 {
1717         errcode_t       retval;
1718
1719         if (common_args_process(argc, argv, 3, 3, "write",
1720                                 "<native file> <new file>", CHECK_FS_RW))
1721                 return;
1722
1723         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1724         if (retval)
1725                 com_err(argv[0], retval, 0);
1726 }
1727
1728 void do_mknod(int argc, char *argv[])
1729 {
1730         unsigned long   major, minor;
1731         errcode_t       retval;
1732         int             nr;
1733         struct stat     st;
1734
1735         if (check_fs_open(argv[0]))
1736                 return;
1737         if (argc < 3 || argv[2][1]) {
1738         usage:
1739                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1740                 return;
1741         }
1742
1743         minor = major = 0;
1744         switch (argv[2][0]) {
1745                 case 'p':
1746                         st.st_mode = S_IFIFO;
1747                         nr = 3;
1748                         break;
1749                 case 'c':
1750                         st.st_mode = S_IFCHR;
1751                         nr = 5;
1752                         break;
1753                 case 'b':
1754                         st.st_mode = S_IFBLK;
1755                         nr = 5;
1756                         break;
1757                 default:
1758                         nr = 0;
1759         }
1760
1761         if (nr == 5) {
1762                 major = strtoul(argv[3], argv+3, 0);
1763                 minor = strtoul(argv[4], argv+4, 0);
1764                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1765                         nr = 0;
1766         }
1767
1768         if (argc != nr)
1769                 goto usage;
1770
1771         st.st_rdev = makedev(major, minor);
1772         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
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, "be")) != EOF) {
2109                 if (mode || c == '?') {
2110                 print_usage:
2111                         com_err(argv[0], 0,
2112                                 "Usage: inode_dump [-b]|[-e] <file>");
2113                         return;
2114                 }
2115                 mode = c;
2116         }
2117         if (optind != argc-1)
2118                 return;
2119
2120         if (check_fs_open(argv[0]))
2121                 return;
2122
2123         ino = string_to_inode(argv[optind]);
2124         if (!ino)
2125                 return;
2126
2127         isize = EXT2_INODE_SIZE(current_fs->super);
2128         err = ext2fs_get_mem(isize, &buf);
2129         if (err) {
2130                 com_err(argv[0], err, "while allocating memory");
2131                 return;
2132         }
2133
2134         err = ext2fs_read_inode_full(current_fs, ino,
2135                                      (struct ext2_inode *)buf, isize);
2136         if (err) {
2137                 com_err(argv[0], err, "while reading inode %u", ino);
2138                 goto err;
2139         }
2140
2141         inode = (struct ext2_inode_large *) buf;
2142         size = isize;
2143         switch (mode) {
2144         case 'b':
2145                 offset = ((char *) (&inode->i_block)) - ((char *) buf);
2146                 size = sizeof(inode->i_block);
2147                 break;
2148         case 'e':
2149                 if (size <= EXT2_GOOD_OLD_INODE_SIZE) {
2150                 no_extra_space:
2151                         com_err(argv[0], 0, "No extra space in inode");
2152                         goto err;
2153                 }
2154                 offset = EXT2_GOOD_OLD_INODE_SIZE + inode->i_extra_isize;
2155                 if (offset > size)
2156                         goto err;
2157                 size -= offset;
2158                 break;
2159         }
2160         do_byte_hexdump(stdout, buf + offset, size);
2161 err:
2162         ext2fs_free_mem(&buf);
2163 }
2164
2165 #ifndef READ_ONLY
2166 void do_set_current_time(int argc, char *argv[])
2167 {
2168         __s64 now;
2169
2170         if (common_args_process(argc, argv, 2, 2, argv[0],
2171                                 "<time>", 0))
2172                 return;
2173
2174         now = string_to_time(argv[1]);
2175         if (now == -1) {
2176                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2177                         argv[1]);
2178                 return;
2179
2180         } else {
2181                 printf("Setting current time to %s\n", time_to_string(now));
2182                 current_fs->now = now;
2183         }
2184 }
2185 #endif /* READ_ONLY */
2186
2187 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2188 {
2189         int compat, bit, ret;
2190         unsigned int feature_mask;
2191
2192         if (name) {
2193                 if (feature_type == E2P_FS_FEATURE)
2194                         ret = e2p_string2feature(name, &compat, &feature_mask);
2195                 else
2196                         ret = e2p_jrnl_string2feature(name, &compat,
2197                                                       &feature_mask);
2198                 if (ret)
2199                         return ret;
2200
2201                 if (!(supp[compat] & feature_mask))
2202                         return 1;
2203         } else {
2204                 for (compat = 0; compat < 3; compat++) {
2205                         for (bit = 0, feature_mask = 1; bit < 32;
2206                              bit++, feature_mask <<= 1) {
2207                                 if (supp[compat] & feature_mask) {
2208                                         if (feature_type == E2P_FS_FEATURE)
2209                                                 fprintf(stdout, " %s",
2210                                                 e2p_feature2string(compat,
2211                                                 feature_mask));
2212                                         else
2213                                                 fprintf(stdout, " %s",
2214                                                 e2p_jrnl_feature2string(compat,
2215                                                 feature_mask));
2216                                 }
2217                         }
2218                 }
2219                 fprintf(stdout, "\n");
2220         }
2221
2222         return 0;
2223 }
2224
2225 void do_supported_features(int argc, char *argv[])
2226 {
2227         int     ret;
2228         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2229                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2230                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2231         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2232                                  JFS_KNOWN_INCOMPAT_FEATURES,
2233                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2234
2235         if (argc > 1) {
2236                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2237                 if (ret) {
2238                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2239                                                 argv[1]);
2240                 }
2241                 if (ret)
2242                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2243                 else
2244                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2245         } else {
2246                 fprintf(stdout, "Supported features:");
2247                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2248                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2249         }
2250 }
2251
2252 #ifndef READ_ONLY
2253 void do_punch(int argc, char *argv[])
2254 {
2255         ext2_ino_t      ino;
2256         blk64_t         start, end;
2257         int             err;
2258         errcode_t       errcode;
2259
2260         if (common_args_process(argc, argv, 3, 4, argv[0],
2261                                 "<file> start_blk [end_blk]",
2262                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2263                 return;
2264
2265         ino = string_to_inode(argv[1]);
2266         if (!ino)
2267                 return;
2268         err = strtoblk(argv[0], argv[2], "logical block", &start);
2269         if (err)
2270                 return;
2271         if (argc == 4) {
2272                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2273                 if (err)
2274                         return;
2275         } else
2276                 end = ~0;
2277
2278         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2279
2280         if (errcode) {
2281                 com_err(argv[0], errcode,
2282                         "while truncating inode %u from %llu to %llu\n", ino,
2283                         (unsigned long long) start, (unsigned long long) end);
2284                 return;
2285         }
2286 }
2287
2288 void do_fallocate(int argc, char *argv[])
2289 {
2290         ext2_ino_t      ino;
2291         blk64_t         start, end;
2292         int             err;
2293         errcode_t       errcode;
2294
2295         if (common_args_process(argc, argv, 3, 4, argv[0],
2296                                 "<file> start_blk [end_blk]",
2297                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2298                 return;
2299
2300         ino = string_to_inode(argv[1]);
2301         if (!ino)
2302                 return;
2303         err = strtoblk(argv[0], argv[2], "logical block", &start);
2304         if (err)
2305                 return;
2306         if (argc == 4) {
2307                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2308                 if (err)
2309                         return;
2310         } else
2311                 end = ~0;
2312
2313         errcode = ext2fs_fallocate(current_fs, EXT2_FALLOCATE_INIT_BEYOND_EOF,
2314                                    ino, NULL, ~0ULL, start, end - start + 1);
2315
2316         if (errcode) {
2317                 com_err(argv[0], errcode,
2318                         "while fallocating inode %u from %llu to %llu\n", ino,
2319                         (unsigned long long) start, (unsigned long long) end);
2320                 return;
2321         }
2322 }
2323 #endif /* READ_ONLY */
2324
2325 void do_symlink(int argc, char *argv[])
2326 {
2327         errcode_t       retval;
2328
2329         if (common_args_process(argc, argv, 3, 3, "symlink",
2330                                 "<filename> <target>", CHECK_FS_RW))
2331                 return;
2332
2333         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2334         if (retval)
2335                 com_err(argv[0], retval, 0);
2336
2337 }
2338
2339 #if CONFIG_MMP
2340 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2341 {
2342         struct mmp_struct *mmp_s;
2343         unsigned long long mmp_block;
2344         time_t t;
2345         errcode_t retval = 0;
2346
2347         if (check_fs_open(argv[0]))
2348                 return;
2349
2350         if (argc > 1) {
2351                 char *end = NULL;
2352                 mmp_block = strtoull(argv[1], &end, 0);
2353                 if (end == argv[0] || mmp_block == 0) {
2354                         fprintf(stderr, "%s: invalid MMP block '%s' given\n",
2355                                 argv[0], argv[1]);
2356                         return;
2357                 }
2358         } else {
2359                 mmp_block = current_fs->super->s_mmp_block;
2360         }
2361
2362         if (mmp_block == 0) {
2363                 fprintf(stderr, "%s: MMP: not active on this filesystem.\n",
2364                         argv[0]);
2365                 return;
2366         }
2367
2368         if (current_fs->mmp_buf == NULL) {
2369                 retval = ext2fs_get_mem(current_fs->blocksize,
2370                                         &current_fs->mmp_buf);
2371                 if (retval) {
2372                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2373                         return;
2374                 }
2375         }
2376
2377         mmp_s = current_fs->mmp_buf;
2378
2379         retval = ext2fs_mmp_read(current_fs, mmp_block, current_fs->mmp_buf);
2380         if (retval) {
2381                 com_err(argv[0], retval, "reading MMP block %llu.\n",
2382                         mmp_block);
2383                 return;
2384         }
2385
2386         t = mmp_s->mmp_time;
2387         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2388         fprintf(stdout, "update_interval: %d\n",
2389                 current_fs->super->s_mmp_update_interval);
2390         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2391         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2392         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2393         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2394         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2395         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2396         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2397 }
2398 #else
2399 void do_dump_mmp(int argc EXT2FS_ATTR((unused)),
2400                  char *argv[] EXT2FS_ATTR((unused)))
2401 {
2402         fprintf(stdout, "MMP is unsupported, please recompile with "
2403                         "--enable-mmp\n");
2404 }
2405 #endif
2406
2407 static int source_file(const char *cmd_file, int ss_idx)
2408 {
2409         FILE            *f;
2410         char            buf[BUFSIZ];
2411         char            *cp;
2412         int             exit_status = 0;
2413         int             retval;
2414
2415         if (strcmp(cmd_file, "-") == 0)
2416                 f = stdin;
2417         else {
2418                 f = fopen(cmd_file, "r");
2419                 if (!f) {
2420                         perror(cmd_file);
2421                         exit(1);
2422                 }
2423         }
2424         fflush(stdout);
2425         fflush(stderr);
2426         setbuf(stdout, NULL);
2427         setbuf(stderr, NULL);
2428         while (!feof(f)) {
2429                 if (fgets(buf, sizeof(buf), f) == NULL)
2430                         break;
2431                 cp = strchr(buf, '\n');
2432                 if (cp)
2433                         *cp = 0;
2434                 cp = strchr(buf, '\r');
2435                 if (cp)
2436                         *cp = 0;
2437                 printf("debugfs: %s\n", buf);
2438                 retval = ss_execute_line(ss_idx, buf);
2439                 if (retval) {
2440                         ss_perror(ss_idx, retval, buf);
2441                         exit_status++;
2442                 }
2443         }
2444         if (f != stdin)
2445                 fclose(f);
2446         return exit_status;
2447 }
2448
2449 int main(int argc, char **argv)
2450 {
2451         int             retval;
2452         const char      *usage =
2453                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2454                 "[-R request] [-d data_source_device] [-i] [-n] [-D] [-V] ["
2455 #ifndef READ_ONLY
2456                 "[-w] [-z undo_file] "
2457 #endif
2458                 "[-c]] [device]";
2459         int             c;
2460         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2461         char            *request = 0;
2462         int             exit_status = 0;
2463         char            *cmd_file = 0;
2464         blk64_t         superblock = 0;
2465         blk64_t         blocksize = 0;
2466         int             catastrophic = 0;
2467         char            *data_filename = 0;
2468 #ifdef READ_ONLY
2469         const char      *opt_string = "nicR:f:b:s:Vd:D";
2470 #else
2471         const char      *opt_string = "niwcR:f:b:s:Vd:Dz:";
2472         char            *undo_file = NULL;
2473 #endif
2474 #ifdef CONFIG_JBD_DEBUG
2475         char            *jbd_debug;
2476 #endif
2477
2478         if (debug_prog_name == 0)
2479 #ifdef READ_ONLY
2480                 debug_prog_name = "rdebugfs";
2481 #else
2482                 debug_prog_name = "debugfs";
2483 #endif
2484         add_error_table(&et_ext2_error_table);
2485         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2486                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2487
2488 #ifdef CONFIG_JBD_DEBUG
2489         jbd_debug = ss_safe_getenv("DEBUGFS_JBD_DEBUG");
2490         if (jbd_debug) {
2491                 int res = sscanf(jbd_debug, "%d", &journal_enable_debug);
2492
2493                 if (res != 1) {
2494                         fprintf(stderr,
2495                                 "DEBUGFS_JBD_DEBUG \"%s\" not an integer\n\n",
2496                                 jbd_debug);
2497                         exit(1);
2498                 }
2499         }
2500 #endif
2501         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2502                 switch (c) {
2503                 case 'R':
2504                         request = optarg;
2505                         break;
2506                 case 'f':
2507                         cmd_file = optarg;
2508                         break;
2509                 case 'd':
2510                         data_filename = optarg;
2511                         break;
2512                 case 'i':
2513                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2514                         break;
2515                 case 'n':
2516                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2517                         break;
2518 #ifndef READ_ONLY
2519                 case 'w':
2520                         open_flags |= EXT2_FLAG_RW;
2521                         break;
2522 #endif
2523                 case 'D':
2524                         open_flags |= EXT2_FLAG_DIRECT_IO;
2525                         break;
2526                 case 'b':
2527                         blocksize = parse_ulong(optarg, argv[0],
2528                                                 "block size", 0);
2529                         break;
2530                 case 's':
2531                         retval = strtoblk(argv[0], optarg,
2532                                           "superblock block number",
2533                                           &superblock);
2534                         if (retval)
2535                                 return 1;
2536                         break;
2537                 case 'c':
2538                         catastrophic = 1;
2539                         break;
2540                 case 'V':
2541                         /* Print version number and exit */
2542                         fprintf(stderr, "\tUsing %s\n",
2543                                 error_message(EXT2_ET_BASE));
2544                         exit(0);
2545                 case 'z':
2546                         undo_file = optarg;
2547                         break;
2548                 default:
2549                         com_err(argv[0], 0, usage, debug_prog_name);
2550                         return 1;
2551                 }
2552         }
2553         if (optind < argc)
2554                 open_filesystem(argv[optind], open_flags,
2555                                 superblock, blocksize, catastrophic,
2556                                 data_filename, undo_file);
2557
2558         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2559                                        &debug_cmds, &retval);
2560         if (retval) {
2561                 ss_perror(sci_idx, retval, "creating invocation");
2562                 exit(1);
2563         }
2564         ss_get_readline(sci_idx);
2565
2566         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2567         if (retval) {
2568                 ss_perror(sci_idx, retval, "adding standard requests");
2569                 exit (1);
2570         }
2571         if (extra_cmds)
2572                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2573         if (retval) {
2574                 ss_perror(sci_idx, retval, "adding extra requests");
2575                 exit (1);
2576         }
2577         if (request) {
2578                 retval = 0;
2579                 retval = ss_execute_line(sci_idx, request);
2580                 if (retval) {
2581                         ss_perror(sci_idx, retval, request);
2582                         exit_status++;
2583                 }
2584         } else if (cmd_file) {
2585                 exit_status = source_file(cmd_file, sci_idx);
2586         } else {
2587                 ss_listen(sci_idx);
2588         }
2589
2590         ss_delete_invocation(sci_idx);
2591
2592         if (current_fs)
2593                 close_filesystem();
2594
2595         remove_error_table(&et_ext2_error_table);
2596         return exit_status;
2597 }