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