debugfs/debugfs.c

   1 /*
   2  * debugfs.c --- a program which allows you to attach an ext2fs
   3  * filesystem and play with it.
   4  *
   5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
   6  * under the terms of the GNU Public License.
   7  *
   8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
   9  */
  10
  11 #include "config.h"
  12 #include <stdio.h>
  13 #include <unistd.h>
  14 #include <stdlib.h>
  15 #include <ctype.h>
  16 #include <string.h>
  17 #include <time.h>
  18 #ifdef HAVE_GETOPT_H
  19 #include <getopt.h>
  20 #else
  21 extern int optind;
  22 extern char *optarg;
  23 #endif
  24 #ifdef HAVE_ERRNO_H
  25 #include <errno.h>
  26 #endif
  27 #include <fcntl.h>
  28
  29 #include "debugfs.h"
  30 #include "uuid/uuid.h"
  31 #include "e2p/e2p.h"
  32
  33 #include <ext2fs/ext2_ext_attr.h>
  34
  35 #include "../version.h"
  36 #include "jfs_user.h"
  37
  38 #ifndef BUFSIZ
  39 #define BUFSIZ 8192
  40 #endif
  41
  42 ss_request_table *extra_cmds;
  43 const char *debug_prog_name;
  44 int sci_idx;
  45
  46 ext2_filsys     current_fs;
  47 quota_ctx_t     current_qctx;
  48 ext2_ino_t      root, cwd;
  49
  50 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
  51                             blk64_t blocksize, int catastrophic,
  52                             char *data_filename)
  53 {
  54         int     retval;
  55         io_channel data_io = 0;
  56
  57         if (superblock != 0 && blocksize == 0) {
  58                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  59                 current_fs = NULL;
  60                 return;
  61         }
  62
  63         if (data_filename) {
  64                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  65                         com_err(device, 0,
  66                                 "The -d option is only valid when reading an e2image file");
  67                         current_fs = NULL;
  68                         return;
  69                 }
  70                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  71                 if (retval) {
  72                         com_err(data_filename, 0, "while opening data source");
  73                         current_fs = NULL;
  74                         return;
  75                 }
  76         }
  77
  78         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  79                 com_err(device, 0,
  80                         "opening read-only because of catastrophic mode");
  81                 open_flags &= ~EXT2_FLAG_RW;
  82         }
  83         if (catastrophic)
  84                 open_flags |= EXT2_FLAG_SKIP_MMP;
  85
  86         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  87                              unix_io_manager, &current_fs);
  88         if (retval) {
  89                 com_err(device, retval, "while opening filesystem");
  90                 current_fs = NULL;
  91                 return;
  92         }
  93         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
  94
  95         if (catastrophic)
  96                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  97         else {
  98                 retval = ext2fs_read_inode_bitmap(current_fs);
  99                 if (retval) {
 100                         com_err(device, retval, "while reading inode bitmap");
 101                         goto errout;
 102                 }
 103                 retval = ext2fs_read_block_bitmap(current_fs);
 104                 if (retval) {
 105                         com_err(device, retval, "while reading block bitmap");
 106                         goto errout;
 107                 }
 108         }
 109
 110         if (data_io) {
 111                 retval = ext2fs_set_data_io(current_fs, data_io);
 112                 if (retval) {
 113                         com_err(device, retval,
 114                                 "while setting data source");
 115                         goto errout;
 116                 }
 117         }
 118
 119         root = cwd = EXT2_ROOT_INO;
 120         return;
 121
 122 errout:
 123         retval = ext2fs_close(current_fs);
 124         if (retval)
 125                 com_err(device, retval, "while trying to close filesystem");
 126         current_fs = NULL;
 127 }
 128
 129 void do_open_filesys(int argc, char **argv)
 130 {
 131         int     c, err;
 132         int     catastrophic = 0;
 133         blk64_t superblock = 0;
 134         blk64_t blocksize = 0;
 135         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 136         char    *data_filename = 0;
 137
 138         reset_getopt();
 139         while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
 140                 switch (c) {
 141                 case 'i':
 142                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 143                         break;
 144                 case 'w':
 145 #ifdef READ_ONLY
 146                         goto print_usage;
 147 #else
 148                         open_flags |= EXT2_FLAG_RW;
 149 #endif /* READ_ONLY */
 150                         break;
 151                 case 'f':
 152                         open_flags |= EXT2_FLAG_FORCE;
 153                         break;
 154                 case 'e':
 155                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 156                         break;
 157                 case 'c':
 158                         catastrophic = 1;
 159                         break;
 160                 case 'd':
 161                         data_filename = optarg;
 162                         break;
 163                 case 'D':
 164                         open_flags |= EXT2_FLAG_DIRECT_IO;
 165                         break;
 166                 case 'b':
 167                         blocksize = parse_ulong(optarg, argv[0],
 168                                                 "block size", &err);
 169                         if (err)
 170                                 return;
 171                         break;
 172                 case 's':
 173                         err = strtoblk(argv[0], optarg,
 174                                        "superblock block number", &superblock);
 175                         if (err)
 176                                 return;
 177                         break;
 178                 default:
 179                         goto print_usage;
 180                 }
 181         }
 182         if (optind != argc-1) {
 183                 goto print_usage;
 184         }
 185         if (check_fs_not_open(argv[0]))
 186                 return;
 187         open_filesystem(argv[optind], open_flags,
 188                         superblock, blocksize, catastrophic,
 189                         data_filename);
 190         return;
 191
 192 print_usage:
 193         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 194                 "[-d image_filename] [-c] [-i] [-f] [-e] [-D] "
 195 #ifndef READ_ONLY
 196                 "[-w] "
 197 #endif
 198                 "<device>\n", argv[0]);
 199 }
 200
 201 void do_lcd(int argc, char **argv)
 202 {
 203         if (argc != 2) {
 204                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 205                 return;
 206         }
 207
 208         if (chdir(argv[1]) == -1) {
 209                 com_err(argv[0], errno,
 210                         "while trying to change native directory to %s",
 211                         argv[1]);
 212                 return;
 213         }
 214 }
 215
 216 static void close_filesystem(NOARGS)
 217 {
 218         int     retval;
 219
 220         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 221                 retval = ext2fs_write_inode_bitmap(current_fs);
 222                 if (retval)
 223                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 224         }
 225         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 226                 retval = ext2fs_write_block_bitmap(current_fs);
 227                 if (retval)
 228                         com_err("ext2fs_write_block_bitmap", retval, 0);
 229         }
 230         if (current_qctx)
 231                 quota_release_context(&current_qctx);
 232         retval = ext2fs_close(current_fs);
 233         if (retval)
 234                 com_err("ext2fs_close", retval, 0);
 235         current_fs = NULL;
 236         return;
 237 }
 238
 239 void do_close_filesys(int argc, char **argv)
 240 {
 241         int     c;
 242
 243         if (check_fs_open(argv[0]))
 244                 return;
 245
 246         reset_getopt();
 247         while ((c = getopt (argc, argv, "a")) != EOF) {
 248                 switch (c) {
 249                 case 'a':
 250                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 251                         break;
 252                 default:
 253                         goto print_usage;
 254                 }
 255         }
 256
 257         if (argc > optind) {
 258         print_usage:
 259                 com_err(0, 0, "Usage: close_filesys [-a]");
 260                 return;
 261         }
 262
 263         close_filesystem();
 264 }
 265
 266 #ifndef READ_ONLY
 267 void do_init_filesys(int argc, char **argv)
 268 {
 269         struct ext2_super_block param;
 270         errcode_t       retval;
 271         int             err;
 272         blk64_t         blocks;
 273
 274         if (common_args_process(argc, argv, 3, 3, "initialize",
 275                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 276                 return;
 277
 278         memset(&param, 0, sizeof(struct ext2_super_block));
 279         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 280         if (err)
 281                 return;
 282         ext2fs_blocks_count_set(&param, blocks);
 283         retval = ext2fs_initialize(argv[1], 0, &param,
 284                                    unix_io_manager, &current_fs);
 285         if (retval) {
 286                 com_err(argv[1], retval, "while initializing filesystem");
 287                 current_fs = NULL;
 288                 return;
 289         }
 290         root = cwd = EXT2_ROOT_INO;
 291         return;
 292 }
 293
 294 static void print_features(struct ext2_super_block * s, FILE *f)
 295 {
 296         int     i, j, printed=0;
 297         __u32   *mask = &s->s_feature_compat, m;
 298
 299         fputs("Filesystem features:", f);
 300         for (i=0; i <3; i++,mask++) {
 301                 for (j=0,m=1; j < 32; j++, m<<=1) {
 302                         if (*mask & m) {
 303                                 fprintf(f, " %s", e2p_feature2string(i, m));
 304                                 printed++;
 305                         }
 306                 }
 307         }
 308         if (printed == 0)
 309                 fputs("(none)", f);
 310         fputs("\n", f);
 311 }
 312 #endif /* READ_ONLY */
 313
 314 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 315                           const char *str, int *first, FILE *f)
 316 {
 317         if (ext2fs_bg_flags_test(fs, group, mask)) {
 318                 if (*first) {
 319                         fputs("           [", f);
 320                         *first = 0;
 321                 } else
 322                         fputs(", ", f);
 323                 fputs(str, f);
 324         }
 325 }
 326
 327 void do_show_super_stats(int argc, char *argv[])
 328 {
 329         const char *units ="block";
 330         dgrp_t  i;
 331         FILE    *out;
 332         int     c, header_only = 0;
 333         int     numdirs = 0, first, gdt_csum;
 334
 335         reset_getopt();
 336         while ((c = getopt (argc, argv, "h")) != EOF) {
 337                 switch (c) {
 338                 case 'h':
 339                         header_only++;
 340                         break;
 341                 default:
 342                         goto print_usage;
 343                 }
 344         }
 345         if (optind != argc) {
 346                 goto print_usage;
 347         }
 348         if (check_fs_open(argv[0]))
 349                 return;
 350         out = open_pager();
 351
 352         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 353                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 354                 units = "cluster";
 355
 356         list_super2(current_fs->super, out);
 357         for (i=0; i < current_fs->group_desc_count; i++)
 358                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 359         fprintf(out, "Directories:              %d\n", numdirs);
 360
 361         if (header_only) {
 362                 close_pager(out);
 363                 return;
 364         }
 365
 366         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 367         for (i = 0; i < current_fs->group_desc_count; i++) {
 368                 fprintf(out, " Group %2d: block bitmap at %llu, "
 369                         "inode bitmap at %llu, "
 370                         "inode table at %llu\n"
 371                         "           %u free %s%s, "
 372                         "%u free %s, "
 373                         "%u used %s%s",
 374                         i, ext2fs_block_bitmap_loc(current_fs, i),
 375                         ext2fs_inode_bitmap_loc(current_fs, i),
 376                         ext2fs_inode_table_loc(current_fs, i),
 377                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 378                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 379                         "s" : "",
 380                         ext2fs_bg_free_inodes_count(current_fs, i),
 381                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 382                         "inodes" : "inode",
 383                         ext2fs_bg_used_dirs_count(current_fs, i),
 384                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 385                                 : "directory", gdt_csum ? ", " : "\n");
 386                 if (gdt_csum)
 387                         fprintf(out, "%u unused %s\n",
 388                                 ext2fs_bg_itable_unused(current_fs, i),
 389                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 390                                 "inodes" : "inode");
 391                 first = 1;
 392                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 393                               &first, out);
 394                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 395                               &first, out);
 396                 if (gdt_csum) {
 397                         fprintf(out, "%sChecksum 0x%04x",
 398                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 399                         first = 0;
 400                 }
 401                 if (!first)
 402                         fputs("]\n", out);
 403         }
 404         close_pager(out);
 405         return;
 406 print_usage:
 407         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 408 }
 409
 410 #ifndef READ_ONLY
 411 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 412                       char **argv EXT2FS_ATTR((unused)))
 413 {
 414         if (check_fs_open(argv[0]))
 415                 return;
 416         if (check_fs_read_write(argv[0]))
 417                 return;
 418
 419         if (argv[1] && !strcmp(argv[1], "-clean"))
 420                 current_fs->super->s_state |= EXT2_VALID_FS;
 421         else
 422                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 423         ext2fs_mark_super_dirty(current_fs);
 424 }
 425 #endif /* READ_ONLY */
 426
 427 struct list_blocks_struct {
 428         FILE            *f;
 429         e2_blkcnt_t     total;
 430         blk64_t         first_block, last_block;
 431         e2_blkcnt_t     first_bcnt, last_bcnt;
 432         e2_blkcnt_t     first;
 433 };
 434
 435 static void finish_range(struct list_blocks_struct *lb)
 436 {
 437         if (lb->first_block == 0)
 438                 return;
 439         if (lb->first)
 440                 lb->first = 0;
 441         else
 442                 fprintf(lb->f, ", ");
 443         if (lb->first_block == lb->last_block)
 444                 fprintf(lb->f, "(%lld):%llu",
 445                         (long long)lb->first_bcnt, lb->first_block);
 446         else
 447                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 448                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 449                         lb->first_block, lb->last_block);
 450         lb->first_block = 0;
 451 }
 452
 453 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 454                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 455                             blk64_t ref_block EXT2FS_ATTR((unused)),
 456                             int ref_offset EXT2FS_ATTR((unused)),
 457                             void *private)
 458 {
 459         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 460
 461         lb->total++;
 462         if (blockcnt >= 0) {
 463                 /*
 464                  * See if we can add on to the existing range (if it exists)
 465                  */
 466                 if (lb->first_block &&
 467                     (lb->last_block+1 == *blocknr) &&
 468                     (lb->last_bcnt+1 == blockcnt)) {
 469                         lb->last_block = *blocknr;
 470                         lb->last_bcnt = blockcnt;
 471                         return 0;
 472                 }
 473                 /*
 474                  * Start a new range.
 475                  */
 476                 finish_range(lb);
 477                 lb->first_block = lb->last_block = *blocknr;
 478                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 479                 return 0;
 480         }
 481         /*
 482          * Not a normal block.  Always force a new range.
 483          */
 484         finish_range(lb);
 485         if (lb->first)
 486                 lb->first = 0;
 487         else
 488                 fprintf(lb->f, ", ");
 489         if (blockcnt == -1)
 490                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 491         else if (blockcnt == -2)
 492                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 493         else if (blockcnt == -3)
 494                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 495         return 0;
 496 }
 497
 498 static void internal_dump_inode_extra(FILE *out,
 499                                       const char *prefix EXT2FS_ATTR((unused)),
 500                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 501                                       struct ext2_inode_large *inode)
 502 {
 503         struct ext2_ext_attr_entry *entry;
 504         __u32 *magic;
 505         char *start, *end;
 506         unsigned int storage_size;
 507
 508         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 509         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 510                         EXT2_GOOD_OLD_INODE_SIZE) {
 511                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 512                                 inode->i_extra_isize);
 513                 return;
 514         }
 515 }
 516
 517 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 518 {
 519         struct list_blocks_struct lb;
 520
 521         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 522         lb.total = 0;
 523         lb.first_block = 0;
 524         lb.f = f;
 525         lb.first = 1;
 526         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 527                               list_blocks_proc, (void *)&lb);
 528         finish_range(&lb);
 529         if (lb.total)
 530                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 531         fprintf(f,"\n");
 532 }
 533
 534 static int int_log10(unsigned long long arg)
 535 {
 536         int     l = 0;
 537
 538         arg = arg / 10;
 539         while (arg) {
 540                 l++;
 541                 arg = arg / 10;
 542         }
 543         return l;
 544 }
 545
 546 #define DUMP_LEAF_EXTENTS       0x01
 547 #define DUMP_NODE_EXTENTS       0x02
 548 #define DUMP_EXTENT_TABLE       0x04
 549
 550 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 551                          int flags, int logical_width, int physical_width)
 552 {
 553         ext2_extent_handle_t    handle;
 554         struct ext2fs_extent    extent;
 555         struct ext2_extent_info info;
 556         int                     op = EXT2_EXTENT_ROOT;
 557         unsigned int            printed = 0;
 558         errcode_t               errcode;
 559
 560         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 561         if (errcode)
 562                 return;
 563
 564         if (flags & DUMP_EXTENT_TABLE)
 565                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 566                         (logical_width*2)+3, "Logical",
 567                         (physical_width*2)+3, "Physical");
 568         else
 569                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 570
 571         while (1) {
 572                 errcode = ext2fs_extent_get(handle, op, &extent);
 573
 574                 if (errcode)
 575                         break;
 576
 577                 op = EXT2_EXTENT_NEXT;
 578
 579                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 580                         continue;
 581
 582                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 583                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 584                                 continue;
 585                 } else {
 586                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 587                                 continue;
 588                 }
 589
 590                 errcode = ext2fs_extent_get_info(handle, &info);
 591                 if (errcode)
 592                         continue;
 593
 594                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 595                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 596                                 continue;
 597
 598                         if (flags & DUMP_EXTENT_TABLE) {
 599                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 600                                         "%*llu%*s %6u\n",
 601                                         info.curr_level, info.max_depth,
 602                                         info.curr_entry, info.num_entries,
 603                                         logical_width,
 604                                         extent.e_lblk,
 605                                         logical_width,
 606                                         extent.e_lblk + (extent.e_len - 1),
 607                                         physical_width,
 608                                         extent.e_pblk,
 609                                         physical_width+3, "", extent.e_len);
 610                                 continue;
 611                         }
 612
 613                         fprintf(f, "%s(ETB%d):%lld",
 614                                 printed ? ", " : "", info.curr_level,
 615                                 extent.e_pblk);
 616                         printed = 1;
 617                         continue;
 618                 }
 619
 620                 if (flags & DUMP_EXTENT_TABLE) {
 621                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 622                                 "%*llu - %*llu %6u %s\n",
 623                                 info.curr_level, info.max_depth,
 624                                 info.curr_entry, info.num_entries,
 625                                 logical_width,
 626                                 extent.e_lblk,
 627                                 logical_width,
 628                                 extent.e_lblk + (extent.e_len - 1),
 629                                 physical_width,
 630                                 extent.e_pblk,
 631                                 physical_width,
 632                                 extent.e_pblk + (extent.e_len - 1),
 633                                 extent.e_len,
 634                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 635                                         "Uninit" : "");
 636                         continue;
 637                 }
 638
 639                 if (extent.e_len == 0)
 640                         continue;
 641                 else if (extent.e_len == 1)
 642                         fprintf(f,
 643                                 "%s(%lld%s):%lld",
 644                                 printed ? ", " : "",
 645                                 extent.e_lblk,
 646                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 647                                 "[u]" : "",
 648                                 extent.e_pblk);
 649                 else
 650                         fprintf(f,
 651                                 "%s(%lld-%lld%s):%lld-%lld",
 652                                 printed ? ", " : "",
 653                                 extent.e_lblk,
 654                                 extent.e_lblk + (extent.e_len - 1),
 655                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 656                                         "[u]" : "",
 657                                 extent.e_pblk,
 658                                 extent.e_pblk + (extent.e_len - 1));
 659                 printed = 1;
 660         }
 661         if (printed)
 662                 fprintf(f, "\n");
 663         ext2fs_extent_free(handle);
 664 }
 665
 666 static void dump_inline_data(FILE *out, const char *prefix, ext2_ino_t inode_num)
 667 {
 668         errcode_t retval;
 669         size_t size;
 670
 671         retval = ext2fs_inline_data_size(current_fs, inode_num, &size);
 672         if (!retval)
 673                 fprintf(out, "%sSize of inline data: %zu", prefix, size);
 674 }
 675
 676 void internal_dump_inode(FILE *out, const char *prefix,
 677                          ext2_ino_t inode_num, struct ext2_inode *inode,
 678                          int do_dump_blocks)
 679 {
 680         const char *i_type;
 681         char frag, fsize;
 682         int os = current_fs->super->s_creator_os;
 683         struct ext2_inode_large *large_inode;
 684         int is_large_inode = 0;
 685
 686         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 687                 is_large_inode = 1;
 688         large_inode = (struct ext2_inode_large *) inode;
 689
 690         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 691         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 692         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 693         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 694         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 695         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 696         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 697         else i_type = "bad type";
 698         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 699         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 700                 prefix, inode->i_mode & 0777, inode->i_flags);
 701         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 702                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 703                         prefix, inode->i_generation, large_inode->i_version_hi,
 704                         inode->osd1.linux1.l_i_version);
 705         } else {
 706                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 707                         inode->i_generation, inode->osd1.linux1.l_i_version);
 708         }
 709         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 710                 prefix, inode_uid(*inode), inode_gid(*inode));
 711         if (LINUX_S_ISREG(inode->i_mode))
 712                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 713         else
 714                 fprintf(out, "%d\n", inode->i_size);
 715         if (os == EXT2_OS_HURD)
 716                 fprintf(out,
 717                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 718                         prefix,
 719                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 720                         inode->osd1.hurd1.h_i_translator);
 721         else
 722                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 723                         prefix,
 724                         inode->i_file_acl | ((long long)
 725                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 726                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 727         if (os == EXT2_OS_LINUX)
 728                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 729                         prefix, inode->i_links_count,
 730                         (((unsigned long long)
 731                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 732                         inode->i_blocks);
 733         else
 734                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 735                         prefix, inode->i_links_count, inode->i_blocks);
 736         switch (os) {
 737             case EXT2_OS_HURD:
 738                 frag = inode->osd2.hurd2.h_i_frag;
 739                 fsize = inode->osd2.hurd2.h_i_fsize;
 740                 break;
 741             default:
 742                 frag = fsize = 0;
 743         }
 744         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 745                 prefix, inode->i_faddr, frag, fsize);
 746         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 747                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 748                         inode->i_ctime, large_inode->i_ctime_extra,
 749                         time_to_string(inode->i_ctime));
 750                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 751                         inode->i_atime, large_inode->i_atime_extra,
 752                         time_to_string(inode->i_atime));
 753                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 754                         inode->i_mtime, large_inode->i_mtime_extra,
 755                         time_to_string(inode->i_mtime));
 756                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 757                         large_inode->i_crtime, large_inode->i_crtime_extra,
 758                         time_to_string(large_inode->i_crtime));
 759         } else {
 760                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 761                         time_to_string(inode->i_ctime));
 762                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 763                         time_to_string(inode->i_atime));
 764                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 765                         time_to_string(inode->i_mtime));
 766         }
 767         if (inode->i_dtime)
 768           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 769                   time_to_string(inode->i_dtime));
 770         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 771                 internal_dump_inode_extra(out, prefix, inode_num,
 772                                           (struct ext2_inode_large *) inode);
 773         dump_inode_attributes(out, inode_num);
 774         if (current_fs->super->s_creator_os == EXT2_OS_LINUX &&
 775             current_fs->super->s_feature_ro_compat &
 776                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
 777                 __u32 crc = inode->i_checksum_lo;
 778                 if (is_large_inode &&
 779                     large_inode->i_extra_isize >=
 780                                 (offsetof(struct ext2_inode_large,
 781                                           i_checksum_hi) -
 782                                  EXT2_GOOD_OLD_INODE_SIZE))
 783                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 784                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 785         }
 786
 787         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 788                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 789                         (int) inode->i_size, (char *)inode->i_block);
 790         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 791                 int major, minor;
 792                 const char *devnote;
 793
 794                 if (inode->i_block[0]) {
 795                         major = (inode->i_block[0] >> 8) & 255;
 796                         minor = inode->i_block[0] & 255;
 797                         devnote = "";
 798                 } else {
 799                         major = (inode->i_block[1] & 0xfff00) >> 8;
 800                         minor = ((inode->i_block[1] & 0xff) |
 801                                  ((inode->i_block[1] >> 12) & 0xfff00));
 802                         devnote = "(New-style) ";
 803                 }
 804                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 805                         devnote, major, minor, major, minor);
 806         } else if (do_dump_blocks) {
 807                 if (inode->i_flags & EXT4_EXTENTS_FL)
 808                         dump_extents(out, prefix, inode_num,
 809                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 810                 else if (inode->i_flags & EXT4_INLINE_DATA_FL)
 811                         dump_inline_data(out, prefix, inode_num);
 812                 else
 813                         dump_blocks(out, prefix, inode_num);
 814         }
 815 }
 816
 817 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 818 {
 819         FILE    *out;
 820
 821         out = open_pager();
 822         internal_dump_inode(out, "", inode_num, inode, 1);
 823         close_pager(out);
 824 }
 825
 826 void do_stat(int argc, char *argv[])
 827 {
 828         ext2_ino_t      inode;
 829         struct ext2_inode * inode_buf;
 830
 831         if (check_fs_open(argv[0]))
 832                 return;
 833
 834         inode_buf = (struct ext2_inode *)
 835                         malloc(EXT2_INODE_SIZE(current_fs->super));
 836         if (!inode_buf) {
 837                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 838                 return;
 839         }
 840
 841         if (common_inode_args_process(argc, argv, &inode, 0)) {
 842                 free(inode_buf);
 843                 return;
 844         }
 845
 846         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 847                                         EXT2_INODE_SIZE(current_fs->super))) {
 848                 free(inode_buf);
 849                 return;
 850         }
 851
 852         dump_inode(inode, inode_buf);
 853         free(inode_buf);
 854         return;
 855 }
 856
 857 void do_dump_extents(int argc, char **argv)
 858 {
 859         struct ext2_inode inode;
 860         ext2_ino_t      ino;
 861         FILE            *out;
 862         int             c, flags = 0;
 863         int             logical_width;
 864         int             physical_width;
 865
 866         reset_getopt();
 867         while ((c = getopt(argc, argv, "nl")) != EOF) {
 868                 switch (c) {
 869                 case 'n':
 870                         flags |= DUMP_NODE_EXTENTS;
 871                         break;
 872                 case 'l':
 873                         flags |= DUMP_LEAF_EXTENTS;
 874                         break;
 875                 }
 876         }
 877
 878         if (argc != optind + 1) {
 879                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 880                 return;
 881         }
 882
 883         if (flags == 0)
 884                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 885         flags |= DUMP_EXTENT_TABLE;
 886
 887         if (check_fs_open(argv[0]))
 888                 return;
 889
 890         ino = string_to_inode(argv[optind]);
 891         if (ino == 0)
 892                 return;
 893
 894         if (debugfs_read_inode(ino, &inode, argv[0]))
 895                 return;
 896
 897         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 898                 fprintf(stderr, "%s: does not uses extent block maps\n",
 899                         argv[optind]);
 900                 return;
 901         }
 902
 903         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 904                                   current_fs->blocksize) + 1;
 905         if (logical_width < 5)
 906                 logical_width = 5;
 907         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 908         if (physical_width < 5)
 909                 physical_width = 5;
 910
 911         out = open_pager();
 912         dump_extents(out, "", ino, flags, logical_width, physical_width);
 913         close_pager(out);
 914         return;
 915 }
 916
 917 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 918                              blk64_t *blocknr,
 919                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 920                              blk64_t ref_block EXT2FS_ATTR((unused)),
 921                              int ref_offset EXT2FS_ATTR((unused)),
 922                              void *private EXT2FS_ATTR((unused)))
 923 {
 924         printf("%llu ", *blocknr);
 925         return 0;
 926 }
 927
 928 void do_blocks(int argc, char *argv[])
 929 {
 930         ext2_ino_t      inode;
 931
 932         if (check_fs_open(argv[0]))
 933                 return;
 934
 935         if (common_inode_args_process(argc, argv, &inode, 0)) {
 936                 return;
 937         }
 938
 939         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 940                               print_blocks_proc, NULL);
 941         fputc('\n', stdout);
 942         return;
 943 }
 944
 945 void do_chroot(int argc, char *argv[])
 946 {
 947         ext2_ino_t inode;
 948         int retval;
 949
 950         if (common_inode_args_process(argc, argv, &inode, 0))
 951                 return;
 952
 953         retval = ext2fs_check_directory(current_fs, inode);
 954         if (retval)  {
 955                 com_err(argv[1], retval, 0);
 956                 return;
 957         }
 958         root = inode;
 959 }
 960
 961 #ifndef READ_ONLY
 962 void do_clri(int argc, char *argv[])
 963 {
 964         ext2_ino_t inode;
 965         struct ext2_inode inode_buf;
 966
 967         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 968                 return;
 969
 970         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 971                 return;
 972         memset(&inode_buf, 0, sizeof(inode_buf));
 973         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 974                 return;
 975 }
 976
 977 void do_freei(int argc, char *argv[])
 978 {
 979         unsigned int    len = 1;
 980         int             err = 0;
 981         ext2_ino_t      inode;
 982
 983         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
 984                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
 985                 return;
 986         if (check_fs_read_write(argv[0]))
 987                 return;
 988
 989         inode = string_to_inode(argv[1]);
 990         if (!inode)
 991                 return;
 992
 993         if (argc == 3) {
 994                 len = parse_ulong(argv[2], argv[0], "length", &err);
 995                 if (err)
 996                         return;
 997         }
 998
 999         if (len == 1 &&
1000             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1001                 com_err(argv[0], 0, "Warning: inode already clear");
1002         while (len-- > 0)
1003                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1004         ext2fs_mark_ib_dirty(current_fs);
1005 }
1006
1007 void do_seti(int argc, char *argv[])
1008 {
1009         unsigned int    len = 1;
1010         int             err = 0;
1011         ext2_ino_t      inode;
1012
1013         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1014                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1015                 return;
1016         if (check_fs_read_write(argv[0]))
1017                 return;
1018
1019         inode = string_to_inode(argv[1]);
1020         if (!inode)
1021                 return;
1022
1023         if (argc == 3) {
1024                 len = parse_ulong(argv[2], argv[0], "length", &err);
1025                 if (err)
1026                         return;
1027         }
1028
1029         if ((len == 1) &&
1030             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1031                 com_err(argv[0], 0, "Warning: inode already set");
1032         while (len-- > 0)
1033                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1034         ext2fs_mark_ib_dirty(current_fs);
1035 }
1036 #endif /* READ_ONLY */
1037
1038 void do_testi(int argc, char *argv[])
1039 {
1040         ext2_ino_t inode;
1041
1042         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1043                 return;
1044
1045         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1046                 printf("Inode %u is marked in use\n", inode);
1047         else
1048                 printf("Inode %u is not in use\n", inode);
1049 }
1050
1051 #ifndef READ_ONLY
1052 void do_freeb(int argc, char *argv[])
1053 {
1054         blk64_t block;
1055         blk64_t count = 1;
1056
1057         if (common_block_args_process(argc, argv, &block, &count))
1058                 return;
1059         if (check_fs_read_write(argv[0]))
1060                 return;
1061         while (count-- > 0) {
1062                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1063                         com_err(argv[0], 0, "Warning: block %llu already clear",
1064                                 block);
1065                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1066                 block++;
1067         }
1068         ext2fs_mark_bb_dirty(current_fs);
1069 }
1070
1071 void do_setb(int argc, char *argv[])
1072 {
1073         blk64_t block;
1074         blk64_t count = 1;
1075
1076         if (common_block_args_process(argc, argv, &block, &count))
1077                 return;
1078         if (check_fs_read_write(argv[0]))
1079                 return;
1080         while (count-- > 0) {
1081                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1082                         com_err(argv[0], 0, "Warning: block %llu already set",
1083                                 block);
1084                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1085                 block++;
1086         }
1087         ext2fs_mark_bb_dirty(current_fs);
1088 }
1089 #endif /* READ_ONLY */
1090
1091 void do_testb(int argc, char *argv[])
1092 {
1093         blk64_t block;
1094         blk64_t count = 1;
1095
1096         if (common_block_args_process(argc, argv, &block, &count))
1097                 return;
1098         while (count-- > 0) {
1099                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1100                         printf("Block %llu marked in use\n", block);
1101                 else
1102                         printf("Block %llu not in use\n", block);
1103                 block++;
1104         }
1105 }
1106
1107 #ifndef READ_ONLY
1108 static void modify_u8(char *com, const char *prompt,
1109                       const char *format, __u8 *val)
1110 {
1111         char buf[200];
1112         unsigned long v;
1113         char *tmp;
1114
1115         sprintf(buf, format, *val);
1116         printf("%30s    [%s] ", prompt, buf);
1117         if (!fgets(buf, sizeof(buf), stdin))
1118                 return;
1119         if (buf[strlen (buf) - 1] == '\n')
1120                 buf[strlen (buf) - 1] = '\0';
1121         if (!buf[0])
1122                 return;
1123         v = strtoul(buf, &tmp, 0);
1124         if (*tmp)
1125                 com_err(com, 0, "Bad value - %s", buf);
1126         else
1127                 *val = v;
1128 }
1129
1130 static void modify_u16(char *com, const char *prompt,
1131                        const char *format, __u16 *val)
1132 {
1133         char buf[200];
1134         unsigned long v;
1135         char *tmp;
1136
1137         sprintf(buf, format, *val);
1138         printf("%30s    [%s] ", prompt, buf);
1139         if (!fgets(buf, sizeof(buf), stdin))
1140                 return;
1141         if (buf[strlen (buf) - 1] == '\n')
1142                 buf[strlen (buf) - 1] = '\0';
1143         if (!buf[0])
1144                 return;
1145         v = strtoul(buf, &tmp, 0);
1146         if (*tmp)
1147                 com_err(com, 0, "Bad value - %s", buf);
1148         else
1149                 *val = v;
1150 }
1151
1152 static void modify_u32(char *com, const char *prompt,
1153                        const char *format, __u32 *val)
1154 {
1155         char buf[200];
1156         unsigned long v;
1157         char *tmp;
1158
1159         sprintf(buf, format, *val);
1160         printf("%30s    [%s] ", prompt, buf);
1161         if (!fgets(buf, sizeof(buf), stdin))
1162                 return;
1163         if (buf[strlen (buf) - 1] == '\n')
1164                 buf[strlen (buf) - 1] = '\0';
1165         if (!buf[0])
1166                 return;
1167         v = strtoul(buf, &tmp, 0);
1168         if (*tmp)
1169                 com_err(com, 0, "Bad value - %s", buf);
1170         else
1171                 *val = v;
1172 }
1173
1174
1175 void do_modify_inode(int argc, char *argv[])
1176 {
1177         struct ext2_inode inode;
1178         ext2_ino_t      inode_num;
1179         int             i;
1180         unsigned char   *frag, *fsize;
1181         char            buf[80];
1182         int             os;
1183         const char      *hex_format = "0x%x";
1184         const char      *octal_format = "0%o";
1185         const char      *decimal_format = "%d";
1186         const char      *unsignedlong_format = "%lu";
1187
1188         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1189                 return;
1190
1191         os = current_fs->super->s_creator_os;
1192
1193         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1194                 return;
1195
1196         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1197         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1198         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1199         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1200         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1201         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1202         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1203         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1204         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1205         if (os == EXT2_OS_LINUX)
1206                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1207                            &inode.osd2.linux2.l_i_blocks_hi);
1208         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1209         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1210         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1211 #if 0
1212         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1213 #endif
1214         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1215         if (LINUX_S_ISDIR(inode.i_mode))
1216                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1217         else
1218                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1219
1220         if (os == EXT2_OS_HURD)
1221                 modify_u32(argv[0], "Translator Block",
1222                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1223
1224         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1225         switch (os) {
1226             case EXT2_OS_HURD:
1227                 frag = &inode.osd2.hurd2.h_i_frag;
1228                 fsize = &inode.osd2.hurd2.h_i_fsize;
1229                 break;
1230             default:
1231                 frag = fsize = 0;
1232         }
1233         if (frag)
1234                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1235         if (fsize)
1236                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1237
1238         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1239                 sprintf(buf, "Direct Block #%d", i);
1240                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1241         }
1242         modify_u32(argv[0], "Indirect Block", decimal_format,
1243                     &inode.i_block[EXT2_IND_BLOCK]);
1244         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1245                     &inode.i_block[EXT2_DIND_BLOCK]);
1246         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1247                     &inode.i_block[EXT2_TIND_BLOCK]);
1248         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1249                 return;
1250 }
1251 #endif /* READ_ONLY */
1252
1253 void do_change_working_dir(int argc, char *argv[])
1254 {
1255         ext2_ino_t      inode;
1256         int             retval;
1257
1258         if (common_inode_args_process(argc, argv, &inode, 0))
1259                 return;
1260
1261         retval = ext2fs_check_directory(current_fs, inode);
1262         if (retval) {
1263                 com_err(argv[1], retval, 0);
1264                 return;
1265         }
1266         cwd = inode;
1267         return;
1268 }
1269
1270 void do_print_working_directory(int argc, char *argv[])
1271 {
1272         int     retval;
1273         char    *pathname = NULL;
1274
1275         if (common_args_process(argc, argv, 1, 1,
1276                                 "print_working_directory", "", 0))
1277                 return;
1278
1279         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1280         if (retval) {
1281                 com_err(argv[0], retval,
1282                         "while trying to get pathname of cwd");
1283         }
1284         printf("[pwd]   INODE: %6u  PATH: %s\n",
1285                cwd, pathname ? pathname : "NULL");
1286         if (pathname) {
1287                 free(pathname);
1288                 pathname = NULL;
1289         }
1290         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1291         if (retval) {
1292                 com_err(argv[0], retval,
1293                         "while trying to get pathname of root");
1294         }
1295         printf("[root]  INODE: %6u  PATH: %s\n",
1296                root, pathname ? pathname : "NULL");
1297         if (pathname) {
1298                 free(pathname);
1299                 pathname = NULL;
1300         }
1301         return;
1302 }
1303
1304 #ifndef READ_ONLY
1305 static void make_link(char *sourcename, char *destname)
1306 {
1307         ext2_ino_t      ino;
1308         struct ext2_inode inode;
1309         int             retval;
1310         ext2_ino_t      dir;
1311         char            *dest, *cp, *base_name;
1312
1313         /*
1314          * Get the source inode
1315          */
1316         ino = string_to_inode(sourcename);
1317         if (!ino)
1318                 return;
1319         base_name = strrchr(sourcename, '/');
1320         if (base_name)
1321                 base_name++;
1322         else
1323                 base_name = sourcename;
1324         /*
1325          * Figure out the destination.  First see if it exists and is
1326          * a directory.
1327          */
1328         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1329                 dest = base_name;
1330         else {
1331                 /*
1332                  * OK, it doesn't exist.  See if it is
1333                  * '<dir>/basename' or 'basename'
1334                  */
1335                 cp = strrchr(destname, '/');
1336                 if (cp) {
1337                         *cp = 0;
1338                         dir = string_to_inode(destname);
1339                         if (!dir)
1340                                 return;
1341                         dest = cp+1;
1342                 } else {
1343                         dir = cwd;
1344                         dest = destname;
1345                 }
1346         }
1347
1348         if (debugfs_read_inode(ino, &inode, sourcename))
1349                 return;
1350
1351         retval = ext2fs_link(current_fs, dir, dest, ino,
1352                              ext2_file_type(inode.i_mode));
1353         if (retval)
1354                 com_err("make_link", retval, 0);
1355         return;
1356 }
1357
1358
1359 void do_link(int argc, char *argv[])
1360 {
1361         if (common_args_process(argc, argv, 3, 3, "link",
1362                                 "<source file> <dest_name>", CHECK_FS_RW))
1363                 return;
1364
1365         make_link(argv[1], argv[2]);
1366 }
1367
1368 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1369                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1370                             blk64_t ref_block EXT2FS_ATTR((unused)),
1371                             int ref_offset EXT2FS_ATTR((unused)),
1372                             void *private EXT2FS_ATTR((unused)))
1373 {
1374         blk64_t block;
1375
1376         block = *blocknr;
1377         ext2fs_block_alloc_stats2(fs, block, +1);
1378         return 0;
1379 }
1380
1381 void do_undel(int argc, char *argv[])
1382 {
1383         ext2_ino_t      ino;
1384         struct ext2_inode inode;
1385
1386         if (common_args_process(argc, argv, 2, 3, "undelete",
1387                                 "<inode_num> [dest_name]",
1388                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1389                 return;
1390
1391         ino = string_to_inode(argv[1]);
1392         if (!ino)
1393                 return;
1394
1395         if (debugfs_read_inode(ino, &inode, argv[1]))
1396                 return;
1397
1398         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1399                 com_err(argv[1], 0, "Inode is not marked as deleted");
1400                 return;
1401         }
1402
1403         /*
1404          * XXX this function doesn't handle changing the links count on the
1405          * parent directory when undeleting a directory.
1406          */
1407         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1408         inode.i_dtime = 0;
1409
1410         if (debugfs_write_inode(ino, &inode, argv[0]))
1411                 return;
1412
1413         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1414                               mark_blocks_proc, NULL);
1415
1416         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1417
1418         if (argc > 2)
1419                 make_link(argv[1], argv[2]);
1420 }
1421
1422 static void unlink_file_by_name(char *filename)
1423 {
1424         int             retval;
1425         ext2_ino_t      dir;
1426         char            *base_name;
1427
1428         base_name = strrchr(filename, '/');
1429         if (base_name) {
1430                 *base_name++ = '\0';
1431                 dir = string_to_inode(filename);
1432                 if (!dir)
1433                         return;
1434         } else {
1435                 dir = cwd;
1436                 base_name = filename;
1437         }
1438         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1439         if (retval)
1440                 com_err("unlink_file_by_name", retval, 0);
1441         return;
1442 }
1443
1444 void do_unlink(int argc, char *argv[])
1445 {
1446         if (common_args_process(argc, argv, 2, 2, "link",
1447                                 "<pathname>", CHECK_FS_RW))
1448                 return;
1449
1450         unlink_file_by_name(argv[1]);
1451 }
1452 #endif /* READ_ONLY */
1453
1454 void do_find_free_block(int argc, char *argv[])
1455 {
1456         blk64_t free_blk, goal, first_free = 0;
1457         int             count;
1458         errcode_t       retval;
1459         char            *tmp;
1460
1461         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1462                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1463                 return;
1464         }
1465         if (check_fs_open(argv[0]))
1466                 return;
1467
1468         if (argc > 1) {
1469                 count = strtol(argv[1],&tmp,0);
1470                 if (*tmp) {
1471                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1472                         return;
1473                 }
1474         } else
1475                 count = 1;
1476
1477         if (argc > 2) {
1478                 goal = strtol(argv[2], &tmp, 0);
1479                 if (*tmp) {
1480                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1481                         return;
1482                 }
1483         }
1484         else
1485                 goal = current_fs->super->s_first_data_block;
1486
1487         printf("Free blocks found: ");
1488         free_blk = goal - 1;
1489         while (count-- > 0) {
1490                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1491                                            &free_blk);
1492                 if (first_free) {
1493                         if (first_free == free_blk)
1494                                 break;
1495                 } else
1496                         first_free = free_blk;
1497                 if (retval) {
1498                         com_err("ext2fs_new_block", retval, 0);
1499                         return;
1500                 } else
1501                         printf("%llu ", free_blk);
1502         }
1503         printf("\n");
1504 }
1505
1506 void do_find_free_inode(int argc, char *argv[])
1507 {
1508         ext2_ino_t      free_inode, dir;
1509         int             mode;
1510         int             retval;
1511         char            *tmp;
1512
1513         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1514                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1515                 return;
1516         }
1517         if (check_fs_open(argv[0]))
1518                 return;
1519
1520         if (argc > 1) {
1521                 dir = strtol(argv[1], &tmp, 0);
1522                 if (*tmp) {
1523                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1524                         return;
1525                 }
1526         }
1527         else
1528                 dir = root;
1529         if (argc > 2) {
1530                 mode = strtol(argv[2], &tmp, 0);
1531                 if (*tmp) {
1532                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1533                         return;
1534                 }
1535         } else
1536                 mode = 010755;
1537
1538         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1539         if (retval)
1540                 com_err("ext2fs_new_inode", retval, 0);
1541         else
1542                 printf("Free inode found: %u\n", free_inode);
1543 }
1544
1545 #ifndef READ_ONLY
1546 void do_write(int argc, char *argv[])
1547 {
1548         errcode_t       retval;
1549
1550         if (common_args_process(argc, argv, 3, 3, "write",
1551                                 "<native file> <new file>", CHECK_FS_RW))
1552                 return;
1553
1554         retval = do_write_internal(current_fs, cwd, argv[1], argv[2], root);
1555         if (retval)
1556                 com_err(argv[0], retval, 0);
1557 }
1558
1559 void do_mknod(int argc, char *argv[])
1560 {
1561         unsigned long   mode, major, minor;
1562         errcode_t       retval;
1563         int             filetype, nr;
1564         struct stat     st;
1565
1566         if (check_fs_open(argv[0]))
1567                 return;
1568         if (argc < 3 || argv[2][1]) {
1569         usage:
1570                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1571                 return;
1572         }
1573
1574         mode = minor = major = 0;
1575         switch (argv[2][0]) {
1576                 case 'p':
1577                         st.st_mode = S_IFIFO;
1578                         nr = 3;
1579                         break;
1580                 case 'c':
1581                         st.st_mode = S_IFCHR;
1582                         nr = 5;
1583                         break;
1584                 case 'b':
1585                         st.st_mode = S_IFBLK;
1586                         nr = 5;
1587                         break;
1588                 default:
1589                         nr = 0;
1590         }
1591
1592         if (nr == 5) {
1593                 major = strtoul(argv[3], argv+3, 0);
1594                 minor = strtoul(argv[4], argv+4, 0);
1595                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1596                         nr = 0;
1597         }
1598
1599         if (argc != nr)
1600                 goto usage;
1601
1602         st.st_rdev = makedev(major, minor);
1603         retval = do_mknod_internal(current_fs, cwd, argv[1], &st);
1604         if (retval)
1605                 com_err(argv[0], retval, 0);
1606 }
1607
1608 void do_mkdir(int argc, char *argv[])
1609 {
1610         errcode_t retval;
1611
1612         if (common_args_process(argc, argv, 2, 2, "mkdir",
1613                                 "<filename>", CHECK_FS_RW))
1614                 return;
1615
1616         retval = do_mkdir_internal(current_fs, cwd, argv[1], NULL, root);
1617         if (retval)
1618                 com_err(argv[0], retval, 0);
1619
1620 }
1621
1622 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1623                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1624                                blk64_t ref_block EXT2FS_ATTR((unused)),
1625                                int ref_offset EXT2FS_ATTR((unused)),
1626                                void *private EXT2FS_ATTR((unused)))
1627 {
1628         blk64_t block;
1629
1630         block = *blocknr;
1631         ext2fs_block_alloc_stats2(fs, block, -1);
1632         return 0;
1633 }
1634
1635 static void kill_file_by_inode(ext2_ino_t inode)
1636 {
1637         struct ext2_inode inode_buf;
1638
1639         if (debugfs_read_inode(inode, &inode_buf, 0))
1640                 return;
1641         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1642         if (debugfs_write_inode(inode, &inode_buf, 0))
1643                 return;
1644         if (ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf)) {
1645                 ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY,
1646                                       NULL, release_blocks_proc, NULL);
1647         }
1648         printf("\n");
1649         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1650                                   LINUX_S_ISDIR(inode_buf.i_mode));
1651 }
1652
1653
1654 void do_kill_file(int argc, char *argv[])
1655 {
1656         ext2_ino_t inode_num;
1657
1658         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1659                 return;
1660
1661         kill_file_by_inode(inode_num);
1662 }
1663
1664 void do_rm(int argc, char *argv[])
1665 {
1666         int retval;
1667         ext2_ino_t inode_num;
1668         struct ext2_inode inode;
1669
1670         if (common_args_process(argc, argv, 2, 2, "rm",
1671                                 "<filename>", CHECK_FS_RW))
1672                 return;
1673
1674         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1675         if (retval) {
1676                 com_err(argv[0], retval, "while trying to resolve filename");
1677                 return;
1678         }
1679
1680         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1681                 return;
1682
1683         if (LINUX_S_ISDIR(inode.i_mode)) {
1684                 com_err(argv[0], 0, "file is a directory");
1685                 return;
1686         }
1687
1688         --inode.i_links_count;
1689         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1690                 return;
1691
1692         unlink_file_by_name(argv[1]);
1693         if (inode.i_links_count == 0)
1694                 kill_file_by_inode(inode_num);
1695 }
1696
1697 struct rd_struct {
1698         ext2_ino_t      parent;
1699         int             empty;
1700 };
1701
1702 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1703                       int       entry EXT2FS_ATTR((unused)),
1704                       struct ext2_dir_entry *dirent,
1705                       int       offset EXT2FS_ATTR((unused)),
1706                       int       blocksize EXT2FS_ATTR((unused)),
1707                       char      *buf EXT2FS_ATTR((unused)),
1708                       void      *private)
1709 {
1710         struct rd_struct *rds = (struct rd_struct *) private;
1711
1712         if (dirent->inode == 0)
1713                 return 0;
1714         if ((ext2fs_dirent_name_len(dirent) == 1) && (dirent->name[0] == '.'))
1715                 return 0;
1716         if ((ext2fs_dirent_name_len(dirent) == 2) && (dirent->name[0] == '.') &&
1717             (dirent->name[1] == '.')) {
1718                 rds->parent = dirent->inode;
1719                 return 0;
1720         }
1721         rds->empty = 0;
1722         return 0;
1723 }
1724
1725 void do_rmdir(int argc, char *argv[])
1726 {
1727         int retval;
1728         ext2_ino_t inode_num;
1729         struct ext2_inode inode;
1730         struct rd_struct rds;
1731
1732         if (common_args_process(argc, argv, 2, 2, "rmdir",
1733                                 "<filename>", CHECK_FS_RW))
1734                 return;
1735
1736         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1737         if (retval) {
1738                 com_err(argv[0], retval, "while trying to resolve filename");
1739                 return;
1740         }
1741
1742         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1743                 return;
1744
1745         if (!LINUX_S_ISDIR(inode.i_mode)) {
1746                 com_err(argv[0], 0, "file is not a directory");
1747                 return;
1748         }
1749
1750         rds.parent = 0;
1751         rds.empty = 1;
1752
1753         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1754                                     0, rmdir_proc, &rds);
1755         if (retval) {
1756                 com_err(argv[0], retval, "while iterating over directory");
1757                 return;
1758         }
1759         if (rds.empty == 0) {
1760                 com_err(argv[0], 0, "directory not empty");
1761                 return;
1762         }
1763
1764         inode.i_links_count = 0;
1765         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1766                 return;
1767
1768         unlink_file_by_name(argv[1]);
1769         kill_file_by_inode(inode_num);
1770
1771         if (rds.parent) {
1772                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1773                         return;
1774                 if (inode.i_links_count > 1)
1775                         inode.i_links_count--;
1776                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1777                         return;
1778         }
1779 }
1780 #endif /* READ_ONLY */
1781
1782 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1783                             char *argv[] EXT2FS_ATTR((unused)))
1784 {
1785         if (current_fs)
1786                 printf("Open mode: read-%s\n",
1787                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1788         printf("Filesystem in use: %s\n",
1789                current_fs ? current_fs->device_name : "--none--");
1790 }
1791
1792 #ifndef READ_ONLY
1793 void do_expand_dir(int argc, char *argv[])
1794 {
1795         ext2_ino_t inode;
1796         int retval;
1797
1798         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1799                 return;
1800
1801         retval = ext2fs_expand_dir(current_fs, inode);
1802         if (retval)
1803                 com_err("ext2fs_expand_dir", retval, 0);
1804         return;
1805 }
1806
1807 void do_features(int argc, char *argv[])
1808 {
1809         int     i;
1810
1811         if (check_fs_open(argv[0]))
1812                 return;
1813
1814         if ((argc != 1) && check_fs_read_write(argv[0]))
1815                 return;
1816         for (i=1; i < argc; i++) {
1817                 if (e2p_edit_feature(argv[i],
1818                                      &current_fs->super->s_feature_compat, 0))
1819                         com_err(argv[0], 0, "Unknown feature: %s\n",
1820                                 argv[i]);
1821                 else
1822                         ext2fs_mark_super_dirty(current_fs);
1823         }
1824         print_features(current_fs->super, stdout);
1825 }
1826 #endif /* READ_ONLY */
1827
1828 void do_bmap(int argc, char *argv[])
1829 {
1830         ext2_ino_t      ino;
1831         blk64_t         blk, pblk;
1832         int             err;
1833         errcode_t       errcode;
1834
1835         if (common_args_process(argc, argv, 3, 3, argv[0],
1836                                 "<file> logical_blk", 0))
1837                 return;
1838
1839         ino = string_to_inode(argv[1]);
1840         if (!ino)
1841                 return;
1842         err = strtoblk(argv[0], argv[2], "logical block", &blk);
1843         if (err)
1844                 return;
1845
1846         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
1847         if (errcode) {
1848                 com_err(argv[0], errcode,
1849                         "while mapping logical block %llu\n", blk);
1850                 return;
1851         }
1852         printf("%llu\n", pblk);
1853 }
1854
1855 void do_imap(int argc, char *argv[])
1856 {
1857         ext2_ino_t      ino;
1858         unsigned long   group, block, block_nr, offset;
1859
1860         if (common_args_process(argc, argv, 2, 2, argv[0],
1861                                 "<file>", 0))
1862                 return;
1863         ino = string_to_inode(argv[1]);
1864         if (!ino)
1865                 return;
1866
1867         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1868         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1869                 EXT2_INODE_SIZE(current_fs->super);
1870         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1871         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
1872                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1873                         group);
1874                 return;
1875         }
1876         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
1877                 block;
1878         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1879
1880         printf("Inode %d is part of block group %lu\n"
1881                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1882                block_nr, offset);
1883
1884 }
1885
1886 #ifndef READ_ONLY
1887 void do_set_current_time(int argc, char *argv[])
1888 {
1889         time_t now;
1890
1891         if (common_args_process(argc, argv, 2, 2, argv[0],
1892                                 "<time>", 0))
1893                 return;
1894
1895         now = string_to_time(argv[1]);
1896         if (now == ((time_t) -1)) {
1897                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1898                         argv[1]);
1899                 return;
1900
1901         } else {
1902                 printf("Setting current time to %s\n", time_to_string(now));
1903                 current_fs->now = now;
1904         }
1905 }
1906 #endif /* READ_ONLY */
1907
1908 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
1909 {
1910         int compat, bit, ret;
1911         unsigned int feature_mask;
1912
1913         if (name) {
1914                 if (feature_type == E2P_FS_FEATURE)
1915                         ret = e2p_string2feature(name, &compat, &feature_mask);
1916                 else
1917                         ret = e2p_jrnl_string2feature(name, &compat,
1918                                                       &feature_mask);
1919                 if (ret)
1920                         return ret;
1921
1922                 if (!(supp[compat] & feature_mask))
1923                         return 1;
1924         } else {
1925                 for (compat = 0; compat < 3; compat++) {
1926                         for (bit = 0, feature_mask = 1; bit < 32;
1927                              bit++, feature_mask <<= 1) {
1928                                 if (supp[compat] & feature_mask) {
1929                                         if (feature_type == E2P_FS_FEATURE)
1930                                                 fprintf(stdout, " %s",
1931                                                 e2p_feature2string(compat,
1932                                                 feature_mask));
1933                                         else
1934                                                 fprintf(stdout, " %s",
1935                                                 e2p_jrnl_feature2string(compat,
1936                                                 feature_mask));
1937                                 }
1938                         }
1939                 }
1940                 fprintf(stdout, "\n");
1941         }
1942
1943         return 0;
1944 }
1945
1946 void do_supported_features(int argc, char *argv[])
1947 {
1948         int     ret;
1949         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
1950                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
1951                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
1952         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
1953                                  JFS_KNOWN_INCOMPAT_FEATURES,
1954                                  JFS_KNOWN_ROCOMPAT_FEATURES };
1955
1956         if (argc > 1) {
1957                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
1958                 if (ret) {
1959                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
1960                                                 argv[1]);
1961                 }
1962                 if (ret)
1963                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
1964                 else
1965                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
1966         } else {
1967                 fprintf(stdout, "Supported features:");
1968                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
1969                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
1970         }
1971 }
1972
1973 #ifndef READ_ONLY
1974 void do_punch(int argc, char *argv[])
1975 {
1976         ext2_ino_t      ino;
1977         blk64_t         start, end;
1978         int             err;
1979         errcode_t       errcode;
1980
1981         if (common_args_process(argc, argv, 3, 4, argv[0],
1982                                 "<file> start_blk [end_blk]",
1983                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1984                 return;
1985
1986         ino = string_to_inode(argv[1]);
1987         if (!ino)
1988                 return;
1989         err = strtoblk(argv[0], argv[2], "logical block", &start);
1990         if (err)
1991                 return;
1992         if (argc == 4) {
1993                 err = strtoblk(argv[0], argv[3], "logical block", &end);
1994                 if (err)
1995                         return;
1996         } else
1997                 end = ~0;
1998
1999         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2000
2001         if (errcode) {
2002                 com_err(argv[0], errcode,
2003                         "while truncating inode %u from %llu to %llu\n", ino,
2004                         (unsigned long long) start, (unsigned long long) end);
2005                 return;
2006         }
2007 }
2008 #endif /* READ_ONLY */
2009
2010 void do_symlink(int argc, char *argv[])
2011 {
2012         errcode_t       retval;
2013
2014         if (common_args_process(argc, argv, 3, 3, "symlink",
2015                                 "<filename> <target>", CHECK_FS_RW))
2016                 return;
2017
2018         retval = do_symlink_internal(current_fs, cwd, argv[1], argv[2], root);
2019         if (retval)
2020                 com_err(argv[0], retval, 0);
2021
2022 }
2023
2024 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2025 {
2026 #if CONFIG_MMP
2027         struct ext2_super_block *sb;
2028         struct mmp_struct *mmp_s;
2029         time_t t;
2030         errcode_t retval = 0;
2031
2032         if (check_fs_open(argv[0]))
2033                 return;
2034
2035         sb  = current_fs->super;
2036
2037         if (current_fs->mmp_buf == NULL) {
2038                 retval = ext2fs_get_mem(current_fs->blocksize,
2039                                         &current_fs->mmp_buf);
2040                 if (retval) {
2041                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2042                         return;
2043                 }
2044         }
2045
2046         mmp_s = current_fs->mmp_buf;
2047
2048         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2049                                  current_fs->mmp_buf);
2050         if (retval) {
2051                 com_err(argv[0], retval, "reading MMP block.\n");
2052                 return;
2053         }
2054
2055         t = mmp_s->mmp_time;
2056         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2057         fprintf(stdout, "update_interval: %d\n",
2058                 current_fs->super->s_mmp_update_interval);
2059         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2060         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2061         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2062         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2063         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2064         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2065         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2066 #else
2067         fprintf(stdout, "MMP is unsupported, please recompile with "
2068                         "--enable-mmp\n");
2069 #endif
2070 }
2071
2072 static int source_file(const char *cmd_file, int ss_idx)
2073 {
2074         FILE            *f;
2075         char            buf[BUFSIZ];
2076         char            *cp;
2077         int             exit_status = 0;
2078         int             retval;
2079
2080         if (strcmp(cmd_file, "-") == 0)
2081                 f = stdin;
2082         else {
2083                 f = fopen(cmd_file, "r");
2084                 if (!f) {
2085                         perror(cmd_file);
2086                         exit(1);
2087                 }
2088         }
2089         fflush(stdout);
2090         fflush(stderr);
2091         setbuf(stdout, NULL);
2092         setbuf(stderr, NULL);
2093         while (!feof(f)) {
2094                 if (fgets(buf, sizeof(buf), f) == NULL)
2095                         break;
2096                 cp = strchr(buf, '\n');
2097                 if (cp)
2098                         *cp = 0;
2099                 cp = strchr(buf, '\r');
2100                 if (cp)
2101                         *cp = 0;
2102                 printf("debugfs: %s\n", buf);
2103                 retval = ss_execute_line(ss_idx, buf);
2104                 if (retval) {
2105                         ss_perror(ss_idx, retval, buf);
2106                         exit_status++;
2107                 }
2108         }
2109         if (f != stdin)
2110                 fclose(f);
2111         return exit_status;
2112 }
2113
2114 int main(int argc, char **argv)
2115 {
2116         int             retval;
2117         const char      *usage =
2118                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2119                 "[-R request] [-V] ["
2120 #ifndef READ_ONLY
2121                 "[-w] "
2122 #endif
2123                 "[-c] device]";
2124         int             c;
2125         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2126         char            *request = 0;
2127         int             exit_status = 0;
2128         char            *cmd_file = 0;
2129         blk64_t         superblock = 0;
2130         blk64_t         blocksize = 0;
2131         int             catastrophic = 0;
2132         char            *data_filename = 0;
2133 #ifdef READ_ONLY
2134         const char      *opt_string = "nicR:f:b:s:Vd:D";
2135 #else
2136         const char      *opt_string = "niwcR:f:b:s:Vd:D";
2137 #endif
2138
2139         if (debug_prog_name == 0)
2140 #ifdef READ_ONLY
2141                 debug_prog_name = "rdebugfs";
2142 #else
2143                 debug_prog_name = "debugfs";
2144 #endif
2145         add_error_table(&et_ext2_error_table);
2146         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2147                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2148
2149         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2150                 switch (c) {
2151                 case 'R':
2152                         request = optarg;
2153                         break;
2154                 case 'f':
2155                         cmd_file = optarg;
2156                         break;
2157                 case 'd':
2158                         data_filename = optarg;
2159                         break;
2160                 case 'i':
2161                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2162                         break;
2163                 case 'n':
2164                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2165                         break;
2166 #ifndef READ_ONLY
2167                 case 'w':
2168                         open_flags |= EXT2_FLAG_RW;
2169                         break;
2170 #endif
2171                 case 'D':
2172                         open_flags |= EXT2_FLAG_DIRECT_IO;
2173                         break;
2174                 case 'b':
2175                         blocksize = parse_ulong(optarg, argv[0],
2176                                                 "block size", 0);
2177                         break;
2178                 case 's':
2179                         retval = strtoblk(argv[0], optarg,
2180                                           "superblock block number",
2181                                           &superblock);
2182                         if (retval)
2183                                 return 1;
2184                         break;
2185                 case 'c':
2186                         catastrophic = 1;
2187                         break;
2188                 case 'V':
2189                         /* Print version number and exit */
2190                         fprintf(stderr, "\tUsing %s\n",
2191                                 error_message(EXT2_ET_BASE));
2192                         exit(0);
2193                 default:
2194                         com_err(argv[0], 0, usage, debug_prog_name);
2195                         return 1;
2196                 }
2197         }
2198         if (optind < argc)
2199                 open_filesystem(argv[optind], open_flags,
2200                                 superblock, blocksize, catastrophic,
2201                                 data_filename);
2202
2203         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2204                                        &debug_cmds, &retval);
2205         if (retval) {
2206                 ss_perror(sci_idx, retval, "creating invocation");
2207                 exit(1);
2208         }
2209         ss_get_readline(sci_idx);
2210
2211         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2212         if (retval) {
2213                 ss_perror(sci_idx, retval, "adding standard requests");
2214                 exit (1);
2215         }
2216         if (extra_cmds)
2217                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2218         if (retval) {
2219                 ss_perror(sci_idx, retval, "adding extra requests");
2220                 exit (1);
2221         }
2222         if (request) {
2223                 retval = 0;
2224                 retval = ss_execute_line(sci_idx, request);
2225                 if (retval) {
2226                         ss_perror(sci_idx, retval, request);
2227                         exit_status++;
2228                 }
2229         } else if (cmd_file) {
2230                 exit_status = source_file(cmd_file, sci_idx);
2231         } else {
2232                 ss_listen(sci_idx);
2233         }
2234
2235         ss_delete_invocation(sci_idx);
2236
2237         if (current_fs)
2238                 close_filesystem();
2239
2240         remove_error_table(&et_ext2_error_table);
2241         return exit_status;
2242 }