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 #include <sys/types.h>
  29 #include <sys/stat.h>
  30
  31 #include "et/com_err.h"
  32 #include "ss/ss.h"
  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
  42 extern ss_request_table debug_cmds;
  43 ss_request_table *extra_cmds;
  44 const char *debug_prog_name;
  45
  46 ext2_filsys     current_fs = NULL;
  47 ext2_ino_t      root, cwd;
  48
  49 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
  50                             blk64_t blocksize, int catastrophic,
  51                             char *data_filename)
  52 {
  53         int     retval;
  54         io_channel data_io = 0;
  55
  56         if (superblock != 0 && blocksize == 0) {
  57                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  58                 current_fs = NULL;
  59                 return;
  60         }
  61
  62         if (data_filename) {
  63                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  64                         com_err(device, 0,
  65                                 "The -d option is only valid when reading an e2image file");
  66                         current_fs = NULL;
  67                         return;
  68                 }
  69                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  70                 if (retval) {
  71                         com_err(data_filename, 0, "while opening data source");
  72                         current_fs = NULL;
  73                         return;
  74                 }
  75         }
  76
  77         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  78                 com_err(device, 0,
  79                         "opening read-only because of catastrophic mode");
  80                 open_flags &= ~EXT2_FLAG_RW;
  81         }
  82         if (catastrophic)
  83                 open_flags |= EXT2_FLAG_SKIP_MMP;
  84
  85         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  86                              unix_io_manager, &current_fs);
  87         if (retval) {
  88                 com_err(device, retval, "while opening filesystem");
  89                 current_fs = NULL;
  90                 return;
  91         }
  92         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
  93
  94         if (catastrophic)
  95                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  96         else {
  97                 retval = ext2fs_read_inode_bitmap(current_fs);
  98                 if (retval) {
  99                         com_err(device, retval, "while reading inode bitmap");
 100                         goto errout;
 101                 }
 102                 retval = ext2fs_read_block_bitmap(current_fs);
 103                 if (retval) {
 104                         com_err(device, retval, "while reading block bitmap");
 105                         goto errout;
 106                 }
 107         }
 108
 109         if (data_io) {
 110                 retval = ext2fs_set_data_io(current_fs, data_io);
 111                 if (retval) {
 112                         com_err(device, retval,
 113                                 "while setting data source");
 114                         goto errout;
 115                 }
 116         }
 117
 118         root = cwd = EXT2_ROOT_INO;
 119         return;
 120
 121 errout:
 122         retval = ext2fs_close(current_fs);
 123         if (retval)
 124                 com_err(device, retval, "while trying to close filesystem");
 125         current_fs = NULL;
 126 }
 127
 128 void do_open_filesys(int argc, char **argv)
 129 {
 130         int     c, err;
 131         int     catastrophic = 0;
 132         blk64_t superblock = 0;
 133         blk64_t blocksize = 0;
 134         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 135         char    *data_filename = 0;
 136
 137         reset_getopt();
 138         while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
 139                 switch (c) {
 140                 case 'i':
 141                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 142                         break;
 143                 case 'w':
 144 #ifdef READ_ONLY
 145                         goto print_usage;
 146 #else
 147                         open_flags |= EXT2_FLAG_RW;
 148 #endif /* READ_ONLY */
 149                         break;
 150                 case 'f':
 151                         open_flags |= EXT2_FLAG_FORCE;
 152                         break;
 153                 case 'e':
 154                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 155                         break;
 156                 case 'c':
 157                         catastrophic = 1;
 158                         break;
 159                 case 'd':
 160                         data_filename = optarg;
 161                         break;
 162                 case 'D':
 163                         open_flags |= EXT2_FLAG_DIRECT_IO;
 164                         break;
 165                 case 'b':
 166                         blocksize = parse_ulong(optarg, argv[0],
 167                                                 "block size", &err);
 168                         if (err)
 169                                 return;
 170                         break;
 171                 case 's':
 172                         superblock = parse_ulong(optarg, argv[0],
 173                                                  "superblock number", &err);
 174                         if (err)
 175                                 return;
 176                         break;
 177                 default:
 178                         goto print_usage;
 179                 }
 180         }
 181         if (optind != argc-1) {
 182                 goto print_usage;
 183         }
 184         if (check_fs_not_open(argv[0]))
 185                 return;
 186         open_filesystem(argv[optind], open_flags,
 187                         superblock, blocksize, catastrophic,
 188                         data_filename);
 189         return;
 190
 191 print_usage:
 192         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] [-c] "
 193 #ifndef READ_ONLY
 194                 "[-w] "
 195 #endif
 196                 "<device>\n", argv[0]);
 197 }
 198
 199 void do_lcd(int argc, char **argv)
 200 {
 201         if (argc != 2) {
 202                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 203                 return;
 204         }
 205
 206         if (chdir(argv[1]) == -1) {
 207                 com_err(argv[0], errno,
 208                         "while trying to change native directory to %s",
 209                         argv[1]);
 210                 return;
 211         }
 212 }
 213
 214 static void close_filesystem(NOARGS)
 215 {
 216         int     retval;
 217
 218         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 219                 retval = ext2fs_write_inode_bitmap(current_fs);
 220                 if (retval)
 221                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 222         }
 223         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 224                 retval = ext2fs_write_block_bitmap(current_fs);
 225                 if (retval)
 226                         com_err("ext2fs_write_block_bitmap", retval, 0);
 227         }
 228         retval = ext2fs_close(current_fs);
 229         if (retval)
 230                 com_err("ext2fs_close", retval, 0);
 231         current_fs = NULL;
 232         return;
 233 }
 234
 235 void do_close_filesys(int argc, char **argv)
 236 {
 237         int     c;
 238
 239         if (check_fs_open(argv[0]))
 240                 return;
 241
 242         reset_getopt();
 243         while ((c = getopt (argc, argv, "a")) != EOF) {
 244                 switch (c) {
 245                 case 'a':
 246                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 247                         break;
 248                 default:
 249                         goto print_usage;
 250                 }
 251         }
 252
 253         if (argc > optind) {
 254         print_usage:
 255                 com_err(0, 0, "Usage: close_filesys [-a]");
 256                 return;
 257         }
 258
 259         close_filesystem();
 260 }
 261
 262 #ifndef READ_ONLY
 263 void do_init_filesys(int argc, char **argv)
 264 {
 265         struct ext2_super_block param;
 266         errcode_t       retval;
 267         int             err;
 268
 269         if (common_args_process(argc, argv, 3, 3, "initialize",
 270                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 271                 return;
 272
 273         memset(&param, 0, sizeof(struct ext2_super_block));
 274         ext2fs_blocks_count_set(&param, parse_ulong(argv[2], argv[0],
 275                                                     "blocks count", &err));
 276         if (err)
 277                 return;
 278         retval = ext2fs_initialize(argv[1], 0, &param,
 279                                    unix_io_manager, &current_fs);
 280         if (retval) {
 281                 com_err(argv[1], retval, "while initializing filesystem");
 282                 current_fs = NULL;
 283                 return;
 284         }
 285         root = cwd = EXT2_ROOT_INO;
 286         return;
 287 }
 288
 289 static void print_features(struct ext2_super_block * s, FILE *f)
 290 {
 291         int     i, j, printed=0;
 292         __u32   *mask = &s->s_feature_compat, m;
 293
 294         fputs("Filesystem features:", f);
 295         for (i=0; i <3; i++,mask++) {
 296                 for (j=0,m=1; j < 32; j++, m<<=1) {
 297                         if (*mask & m) {
 298                                 fprintf(f, " %s", e2p_feature2string(i, m));
 299                                 printed++;
 300                         }
 301                 }
 302         }
 303         if (printed == 0)
 304                 fputs("(none)", f);
 305         fputs("\n", f);
 306 }
 307 #endif /* READ_ONLY */
 308
 309 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 310                           const char *str, int *first, FILE *f)
 311 {
 312         if (ext2fs_bg_flags_test(fs, group, mask)) {
 313                 if (*first) {
 314                         fputs("           [", f);
 315                         *first = 0;
 316                 } else
 317                         fputs(", ", f);
 318                 fputs(str, f);
 319         }
 320 }
 321
 322 void do_show_super_stats(int argc, char *argv[])
 323 {
 324         const char *units ="block";
 325         dgrp_t  i;
 326         FILE    *out;
 327         int     c, header_only = 0;
 328         int     numdirs = 0, first, gdt_csum;
 329
 330         reset_getopt();
 331         while ((c = getopt (argc, argv, "h")) != EOF) {
 332                 switch (c) {
 333                 case 'h':
 334                         header_only++;
 335                         break;
 336                 default:
 337                         goto print_usage;
 338                 }
 339         }
 340         if (optind != argc) {
 341                 goto print_usage;
 342         }
 343         if (check_fs_open(argv[0]))
 344                 return;
 345         out = open_pager();
 346
 347         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 348                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 349                 units = "cluster";
 350
 351         list_super2(current_fs->super, out);
 352         for (i=0; i < current_fs->group_desc_count; i++)
 353                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 354         fprintf(out, "Directories:              %d\n", numdirs);
 355
 356         if (header_only) {
 357                 close_pager(out);
 358                 return;
 359         }
 360
 361         gdt_csum = ext2fs_has_group_desc_csum(current_fs);
 362         for (i = 0; i < current_fs->group_desc_count; i++) {
 363                 fprintf(out, " Group %2d: block bitmap at %llu, "
 364                         "inode bitmap at %llu, "
 365                         "inode table at %llu\n"
 366                         "           %u free %s%s, "
 367                         "%u free %s, "
 368                         "%u used %s%s",
 369                         i, ext2fs_block_bitmap_loc(current_fs, i),
 370                         ext2fs_inode_bitmap_loc(current_fs, i),
 371                         ext2fs_inode_table_loc(current_fs, i),
 372                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 373                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 374                         "s" : "",
 375                         ext2fs_bg_free_inodes_count(current_fs, i),
 376                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 377                         "inodes" : "inode",
 378                         ext2fs_bg_used_dirs_count(current_fs, i),
 379                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 380                                 : "directory", gdt_csum ? ", " : "\n");
 381                 if (gdt_csum)
 382                         fprintf(out, "%u unused %s\n",
 383                                 ext2fs_bg_itable_unused(current_fs, i),
 384                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 385                                 "inodes" : "inode");
 386                 first = 1;
 387                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 388                               &first, out);
 389                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 390                               &first, out);
 391                 if (gdt_csum) {
 392                         fprintf(out, "%sChecksum 0x%04x",
 393                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 394                         first = 0;
 395                 }
 396                 if (!first)
 397                         fputs("]\n", out);
 398         }
 399         close_pager(out);
 400         return;
 401 print_usage:
 402         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 403 }
 404
 405 #ifndef READ_ONLY
 406 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 407                       char **argv EXT2FS_ATTR((unused)))
 408 {
 409         if (check_fs_open(argv[0]))
 410                 return;
 411         if (check_fs_read_write(argv[0]))
 412                 return;
 413
 414         if (argv[1] && !strcmp(argv[1], "-clean"))
 415                 current_fs->super->s_state |= EXT2_VALID_FS;
 416         else
 417                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 418         ext2fs_mark_super_dirty(current_fs);
 419 }
 420 #endif /* READ_ONLY */
 421
 422 struct list_blocks_struct {
 423         FILE            *f;
 424         e2_blkcnt_t     total;
 425         blk64_t         first_block, last_block;
 426         e2_blkcnt_t     first_bcnt, last_bcnt;
 427         e2_blkcnt_t     first;
 428 };
 429
 430 static void finish_range(struct list_blocks_struct *lb)
 431 {
 432         if (lb->first_block == 0)
 433                 return;
 434         if (lb->first)
 435                 lb->first = 0;
 436         else
 437                 fprintf(lb->f, ", ");
 438         if (lb->first_block == lb->last_block)
 439                 fprintf(lb->f, "(%lld):%llu",
 440                         (long long)lb->first_bcnt, lb->first_block);
 441         else
 442                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 443                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 444                         lb->first_block, lb->last_block);
 445         lb->first_block = 0;
 446 }
 447
 448 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 449                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 450                             blk64_t ref_block EXT2FS_ATTR((unused)),
 451                             int ref_offset EXT2FS_ATTR((unused)),
 452                             void *private)
 453 {
 454         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 455
 456         lb->total++;
 457         if (blockcnt >= 0) {
 458                 /*
 459                  * See if we can add on to the existing range (if it exists)
 460                  */
 461                 if (lb->first_block &&
 462                     (lb->last_block+1 == *blocknr) &&
 463                     (lb->last_bcnt+1 == blockcnt)) {
 464                         lb->last_block = *blocknr;
 465                         lb->last_bcnt = blockcnt;
 466                         return 0;
 467                 }
 468                 /*
 469                  * Start a new range.
 470                  */
 471                 finish_range(lb);
 472                 lb->first_block = lb->last_block = *blocknr;
 473                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 474                 return 0;
 475         }
 476         /*
 477          * Not a normal block.  Always force a new range.
 478          */
 479         finish_range(lb);
 480         if (lb->first)
 481                 lb->first = 0;
 482         else
 483                 fprintf(lb->f, ", ");
 484         if (blockcnt == -1)
 485                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 486         else if (blockcnt == -2)
 487                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 488         else if (blockcnt == -3)
 489                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 490         return 0;
 491 }
 492
 493 static void dump_xattr_string(FILE *out, const char *str, int len)
 494 {
 495         int printable = 0;
 496         int i;
 497
 498         /* check: is string "printable enough?" */
 499         for (i = 0; i < len; i++)
 500                 if (isprint(str[i]))
 501                         printable++;
 502
 503         if (printable <= len*7/8)
 504                 printable = 0;
 505
 506         for (i = 0; i < len; i++)
 507                 if (printable)
 508                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 509                                 (unsigned char)str[i]);
 510                 else
 511                         fprintf(out, "%02x ", (unsigned char)str[i]);
 512 }
 513
 514 static void internal_dump_inode_extra(FILE *out,
 515                                       const char *prefix EXT2FS_ATTR((unused)),
 516                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 517                                       struct ext2_inode_large *inode)
 518 {
 519         struct ext2_ext_attr_entry *entry;
 520         __u32 *magic;
 521         char *start, *end;
 522         unsigned int storage_size;
 523
 524         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 525         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 526                         EXT2_GOOD_OLD_INODE_SIZE) {
 527                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 528                                 inode->i_extra_isize);
 529                 return;
 530         }
 531         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 532                         EXT2_GOOD_OLD_INODE_SIZE -
 533                         inode->i_extra_isize;
 534         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 535                         inode->i_extra_isize);
 536         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 537                 fprintf(out, "Extended attributes stored in inode body: \n");
 538                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 539                 start = (char *) magic + sizeof(__u32);
 540                 entry = (struct ext2_ext_attr_entry *) start;
 541                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 542                         struct ext2_ext_attr_entry *next =
 543                                 EXT2_EXT_ATTR_NEXT(entry);
 544                         if (entry->e_value_size > storage_size ||
 545                                         (char *) next >= end) {
 546                                 fprintf(out, "invalid EA entry in inode\n");
 547                                 return;
 548                         }
 549                         fprintf(out, "  ");
 550                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 551                                           entry->e_name_len);
 552                         fprintf(out, " = \"");
 553                         dump_xattr_string(out, start + entry->e_value_offs,
 554                                                 entry->e_value_size);
 555                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 556                         entry = next;
 557                 }
 558         }
 559 }
 560
 561 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 562 {
 563         struct list_blocks_struct lb;
 564
 565         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 566         lb.total = 0;
 567         lb.first_block = 0;
 568         lb.f = f;
 569         lb.first = 1;
 570         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 571                               list_blocks_proc, (void *)&lb);
 572         finish_range(&lb);
 573         if (lb.total)
 574                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 575         fprintf(f,"\n");
 576 }
 577
 578 static int int_log10(unsigned long long arg)
 579 {
 580         int     l = 0;
 581
 582         arg = arg / 10;
 583         while (arg) {
 584                 l++;
 585                 arg = arg / 10;
 586         }
 587         return l;
 588 }
 589
 590 #define DUMP_LEAF_EXTENTS       0x01
 591 #define DUMP_NODE_EXTENTS       0x02
 592 #define DUMP_EXTENT_TABLE       0x04
 593
 594 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 595                          int flags, int logical_width, int physical_width)
 596 {
 597         ext2_extent_handle_t    handle;
 598         struct ext2fs_extent    extent;
 599         struct ext2_extent_info info;
 600         int                     op = EXT2_EXTENT_ROOT;
 601         unsigned int            printed = 0;
 602         errcode_t               errcode;
 603
 604         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 605         if (errcode)
 606                 return;
 607
 608         if (flags & DUMP_EXTENT_TABLE)
 609                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 610                         (logical_width*2)+3, "Logical",
 611                         (physical_width*2)+3, "Physical");
 612         else
 613                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 614
 615         while (1) {
 616                 errcode = ext2fs_extent_get(handle, op, &extent);
 617
 618                 if (errcode)
 619                         break;
 620
 621                 op = EXT2_EXTENT_NEXT;
 622
 623                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 624                         continue;
 625
 626                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 627                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 628                                 continue;
 629                 } else {
 630                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 631                                 continue;
 632                 }
 633
 634                 errcode = ext2fs_extent_get_info(handle, &info);
 635                 if (errcode)
 636                         continue;
 637
 638                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 639                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 640                                 continue;
 641
 642                         if (flags & DUMP_EXTENT_TABLE) {
 643                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 644                                         "%*llu%*s %6u\n",
 645                                         info.curr_level, info.max_depth,
 646                                         info.curr_entry, info.num_entries,
 647                                         logical_width,
 648                                         extent.e_lblk,
 649                                         logical_width,
 650                                         extent.e_lblk + (extent.e_len - 1),
 651                                         physical_width,
 652                                         extent.e_pblk,
 653                                         physical_width+3, "", extent.e_len);
 654                                 continue;
 655                         }
 656
 657                         fprintf(f, "%s(ETB%d):%lld",
 658                                 printed ? ", " : "", info.curr_level,
 659                                 extent.e_pblk);
 660                         printed = 1;
 661                         continue;
 662                 }
 663
 664                 if (flags & DUMP_EXTENT_TABLE) {
 665                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 666                                 "%*llu - %*llu %6u %s\n",
 667                                 info.curr_level, info.max_depth,
 668                                 info.curr_entry, info.num_entries,
 669                                 logical_width,
 670                                 extent.e_lblk,
 671                                 logical_width,
 672                                 extent.e_lblk + (extent.e_len - 1),
 673                                 physical_width,
 674                                 extent.e_pblk,
 675                                 physical_width,
 676                                 extent.e_pblk + (extent.e_len - 1),
 677                                 extent.e_len,
 678                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 679                                         "Uninit" : "");
 680                         continue;
 681                 }
 682
 683                 if (extent.e_len == 0)
 684                         continue;
 685                 else if (extent.e_len == 1)
 686                         fprintf(f,
 687                                 "%s(%lld%s):%lld",
 688                                 printed ? ", " : "",
 689                                 extent.e_lblk,
 690                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 691                                 "[u]" : "",
 692                                 extent.e_pblk);
 693                 else
 694                         fprintf(f,
 695                                 "%s(%lld-%lld%s):%lld-%lld",
 696                                 printed ? ", " : "",
 697                                 extent.e_lblk,
 698                                 extent.e_lblk + (extent.e_len - 1),
 699                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 700                                         "[u]" : "",
 701                                 extent.e_pblk,
 702                                 extent.e_pblk + (extent.e_len - 1));
 703                 printed = 1;
 704         }
 705         if (printed)
 706                 fprintf(f, "\n");
 707 }
 708
 709 void internal_dump_inode(FILE *out, const char *prefix,
 710                          ext2_ino_t inode_num, struct ext2_inode *inode,
 711                          int do_dump_blocks)
 712 {
 713         const char *i_type;
 714         char frag, fsize;
 715         int os = current_fs->super->s_creator_os;
 716         struct ext2_inode_large *large_inode;
 717         int is_large_inode = 0;
 718
 719         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 720                 is_large_inode = 1;
 721         large_inode = (struct ext2_inode_large *) inode;
 722
 723         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 724         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 725         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 726         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 727         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 728         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 729         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 730         else i_type = "bad type";
 731         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 732         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 733                 prefix, inode->i_mode & 0777, inode->i_flags);
 734         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 735                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 736                         prefix, inode->i_generation, large_inode->i_version_hi,
 737                         inode->osd1.linux1.l_i_version);
 738         } else {
 739                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 740                         inode->i_generation, inode->osd1.linux1.l_i_version);
 741         }
 742         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 743                 prefix, inode_uid(*inode), inode_gid(*inode));
 744         if (LINUX_S_ISREG(inode->i_mode))
 745                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 746         else
 747                 fprintf(out, "%d\n", inode->i_size);
 748         if (os == EXT2_OS_HURD)
 749                 fprintf(out,
 750                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 751                         prefix,
 752                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 753                         inode->osd1.hurd1.h_i_translator);
 754         else
 755                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 756                         prefix,
 757                         inode->i_file_acl | ((long long)
 758                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 759                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 760         if (os == EXT2_OS_LINUX)
 761                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 762                         prefix, inode->i_links_count,
 763                         (((unsigned long long)
 764                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 765                         inode->i_blocks);
 766         else
 767                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 768                         prefix, inode->i_links_count, inode->i_blocks);
 769         switch (os) {
 770             case EXT2_OS_HURD:
 771                 frag = inode->osd2.hurd2.h_i_frag;
 772                 fsize = inode->osd2.hurd2.h_i_fsize;
 773                 break;
 774             default:
 775                 frag = fsize = 0;
 776         }
 777         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 778                 prefix, inode->i_faddr, frag, fsize);
 779         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 780                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 781                         inode->i_ctime, large_inode->i_ctime_extra,
 782                         time_to_string(inode->i_ctime));
 783                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 784                         inode->i_atime, large_inode->i_atime_extra,
 785                         time_to_string(inode->i_atime));
 786                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 787                         inode->i_mtime, large_inode->i_mtime_extra,
 788                         time_to_string(inode->i_mtime));
 789                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 790                         large_inode->i_crtime, large_inode->i_crtime_extra,
 791                         time_to_string(large_inode->i_crtime));
 792         } else {
 793                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 794                         time_to_string(inode->i_ctime));
 795                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 796                         time_to_string(inode->i_atime));
 797                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 798                         time_to_string(inode->i_mtime));
 799         }
 800         if (inode->i_dtime)
 801           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 802                   time_to_string(inode->i_dtime));
 803         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 804                 internal_dump_inode_extra(out, prefix, inode_num,
 805                                           (struct ext2_inode_large *) inode);
 806         if (current_fs->super->s_creator_os == EXT2_OS_LINUX &&
 807             current_fs->super->s_feature_ro_compat &
 808                 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) {
 809                 __u32 crc = inode->i_checksum_lo;
 810                 if (is_large_inode &&
 811                     large_inode->i_extra_isize >=
 812                                 (offsetof(struct ext2_inode_large,
 813                                           i_checksum_hi) -
 814                                  EXT2_GOOD_OLD_INODE_SIZE))
 815                         crc |= ((__u32)large_inode->i_checksum_hi) << 16;
 816                 fprintf(out, "Inode checksum: 0x%08x\n", crc);
 817         }
 818
 819         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 820                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 821                         (int) inode->i_size, (char *)inode->i_block);
 822         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 823                 int major, minor;
 824                 const char *devnote;
 825
 826                 if (inode->i_block[0]) {
 827                         major = (inode->i_block[0] >> 8) & 255;
 828                         minor = inode->i_block[0] & 255;
 829                         devnote = "";
 830                 } else {
 831                         major = (inode->i_block[1] & 0xfff00) >> 8;
 832                         minor = ((inode->i_block[1] & 0xff) |
 833                                  ((inode->i_block[1] >> 12) & 0xfff00));
 834                         devnote = "(New-style) ";
 835                 }
 836                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 837                         devnote, major, minor, major, minor);
 838         } else if (do_dump_blocks) {
 839                 if (inode->i_flags & EXT4_EXTENTS_FL)
 840                         dump_extents(out, prefix, inode_num,
 841                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 842                 else
 843                         dump_blocks(out, prefix, inode_num);
 844         }
 845 }
 846
 847 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 848 {
 849         FILE    *out;
 850
 851         out = open_pager();
 852         internal_dump_inode(out, "", inode_num, inode, 1);
 853         close_pager(out);
 854 }
 855
 856 void do_stat(int argc, char *argv[])
 857 {
 858         ext2_ino_t      inode;
 859         struct ext2_inode * inode_buf;
 860
 861         if (check_fs_open(argv[0]))
 862                 return;
 863
 864         inode_buf = (struct ext2_inode *)
 865                         malloc(EXT2_INODE_SIZE(current_fs->super));
 866         if (!inode_buf) {
 867                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 868                 return;
 869         }
 870
 871         if (common_inode_args_process(argc, argv, &inode, 0)) {
 872                 free(inode_buf);
 873                 return;
 874         }
 875
 876         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 877                                         EXT2_INODE_SIZE(current_fs->super))) {
 878                 free(inode_buf);
 879                 return;
 880         }
 881
 882         dump_inode(inode, inode_buf);
 883         free(inode_buf);
 884         return;
 885 }
 886
 887 void do_dump_extents(int argc, char **argv)
 888 {
 889         struct ext2_inode inode;
 890         ext2_ino_t      ino;
 891         FILE            *out;
 892         int             c, flags = 0;
 893         int             logical_width;
 894         int             physical_width;
 895
 896         reset_getopt();
 897         while ((c = getopt(argc, argv, "nl")) != EOF) {
 898                 switch (c) {
 899                 case 'n':
 900                         flags |= DUMP_NODE_EXTENTS;
 901                         break;
 902                 case 'l':
 903                         flags |= DUMP_LEAF_EXTENTS;
 904                         break;
 905                 }
 906         }
 907
 908         if (argc != optind + 1) {
 909                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 910                 return;
 911         }
 912
 913         if (flags == 0)
 914                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 915         flags |= DUMP_EXTENT_TABLE;
 916
 917         if (check_fs_open(argv[0]))
 918                 return;
 919
 920         ino = string_to_inode(argv[optind]);
 921         if (ino == 0)
 922                 return;
 923
 924         if (debugfs_read_inode(ino, &inode, argv[0]))
 925                 return;
 926
 927         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 928                 fprintf(stderr, "%s: does not uses extent block maps\n",
 929                         argv[optind]);
 930                 return;
 931         }
 932
 933         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 934                                   current_fs->blocksize) + 1;
 935         if (logical_width < 5)
 936                 logical_width = 5;
 937         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 938         if (physical_width < 5)
 939                 physical_width = 5;
 940
 941         out = open_pager();
 942         dump_extents(out, "", ino, flags, logical_width, physical_width);
 943         close_pager(out);
 944         return;
 945 }
 946
 947 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 948                              blk64_t *blocknr,
 949                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 950                              blk64_t ref_block EXT2FS_ATTR((unused)),
 951                              int ref_offset EXT2FS_ATTR((unused)),
 952                              void *private EXT2FS_ATTR((unused)))
 953 {
 954         printf("%llu ", *blocknr);
 955         return 0;
 956 }
 957
 958 void do_blocks(int argc, char *argv[])
 959 {
 960         ext2_ino_t      inode;
 961
 962         if (check_fs_open(argv[0]))
 963                 return;
 964
 965         if (common_inode_args_process(argc, argv, &inode, 0)) {
 966                 return;
 967         }
 968
 969         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 970                               print_blocks_proc, NULL);
 971         fputc('\n', stdout);
 972         return;
 973 }
 974
 975 void do_chroot(int argc, char *argv[])
 976 {
 977         ext2_ino_t inode;
 978         int retval;
 979
 980         if (common_inode_args_process(argc, argv, &inode, 0))
 981                 return;
 982
 983         retval = ext2fs_check_directory(current_fs, inode);
 984         if (retval)  {
 985                 com_err(argv[1], retval, 0);
 986                 return;
 987         }
 988         root = inode;
 989 }
 990
 991 #ifndef READ_ONLY
 992 void do_clri(int argc, char *argv[])
 993 {
 994         ext2_ino_t inode;
 995         struct ext2_inode inode_buf;
 996
 997         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 998                 return;
 999
1000         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1001                 return;
1002         memset(&inode_buf, 0, sizeof(inode_buf));
1003         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1004                 return;
1005 }
1006
1007 void do_freei(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 clear");
1032         while (len-- > 0)
1033                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode);
1034         ext2fs_mark_ib_dirty(current_fs);
1035 }
1036
1037 void do_seti(int argc, char *argv[])
1038 {
1039         unsigned int    len = 1;
1040         int             err = 0;
1041         ext2_ino_t      inode;
1042
1043         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1044                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1045                 return;
1046         if (check_fs_read_write(argv[0]))
1047                 return;
1048
1049         inode = string_to_inode(argv[1]);
1050         if (!inode)
1051                 return;
1052
1053         if (argc == 3) {
1054                 len = parse_ulong(argv[2], argv[0], "length", &err);
1055                 if (err)
1056                         return;
1057         }
1058
1059         if ((len == 1) &&
1060             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1061                 com_err(argv[0], 0, "Warning: inode already set");
1062         while (len-- > 0)
1063                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1064         ext2fs_mark_ib_dirty(current_fs);
1065 }
1066 #endif /* READ_ONLY */
1067
1068 void do_testi(int argc, char *argv[])
1069 {
1070         ext2_ino_t inode;
1071
1072         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1073                 return;
1074
1075         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1076                 printf("Inode %u is marked in use\n", inode);
1077         else
1078                 printf("Inode %u is not in use\n", inode);
1079 }
1080
1081 #ifndef READ_ONLY
1082 void do_freeb(int argc, char *argv[])
1083 {
1084         blk64_t block;
1085         blk64_t count = 1;
1086
1087         if (common_block_args_process(argc, argv, &block, &count))
1088                 return;
1089         if (check_fs_read_write(argv[0]))
1090                 return;
1091         while (count-- > 0) {
1092                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1093                         com_err(argv[0], 0, "Warning: block %llu already clear",
1094                                 block);
1095                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1096                 block++;
1097         }
1098         ext2fs_mark_bb_dirty(current_fs);
1099 }
1100
1101 void do_setb(int argc, char *argv[])
1102 {
1103         blk64_t block;
1104         blk64_t count = 1;
1105
1106         if (common_block_args_process(argc, argv, &block, &count))
1107                 return;
1108         if (check_fs_read_write(argv[0]))
1109                 return;
1110         while (count-- > 0) {
1111                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1112                         com_err(argv[0], 0, "Warning: block %llu already set",
1113                                 block);
1114                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1115                 block++;
1116         }
1117         ext2fs_mark_bb_dirty(current_fs);
1118 }
1119 #endif /* READ_ONLY */
1120
1121 void do_testb(int argc, char *argv[])
1122 {
1123         blk64_t block;
1124         blk64_t count = 1;
1125
1126         if (common_block_args_process(argc, argv, &block, &count))
1127                 return;
1128         while (count-- > 0) {
1129                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1130                         printf("Block %llu marked in use\n", block);
1131                 else
1132                         printf("Block %llu not in use\n", block);
1133                 block++;
1134         }
1135 }
1136
1137 #ifndef READ_ONLY
1138 static void modify_u8(char *com, const char *prompt,
1139                       const char *format, __u8 *val)
1140 {
1141         char buf[200];
1142         unsigned long v;
1143         char *tmp;
1144
1145         sprintf(buf, format, *val);
1146         printf("%30s    [%s] ", prompt, buf);
1147         if (!fgets(buf, sizeof(buf), stdin))
1148                 return;
1149         if (buf[strlen (buf) - 1] == '\n')
1150                 buf[strlen (buf) - 1] = '\0';
1151         if (!buf[0])
1152                 return;
1153         v = strtoul(buf, &tmp, 0);
1154         if (*tmp)
1155                 com_err(com, 0, "Bad value - %s", buf);
1156         else
1157                 *val = v;
1158 }
1159
1160 static void modify_u16(char *com, const char *prompt,
1161                        const char *format, __u16 *val)
1162 {
1163         char buf[200];
1164         unsigned long v;
1165         char *tmp;
1166
1167         sprintf(buf, format, *val);
1168         printf("%30s    [%s] ", prompt, buf);
1169         if (!fgets(buf, sizeof(buf), stdin))
1170                 return;
1171         if (buf[strlen (buf) - 1] == '\n')
1172                 buf[strlen (buf) - 1] = '\0';
1173         if (!buf[0])
1174                 return;
1175         v = strtoul(buf, &tmp, 0);
1176         if (*tmp)
1177                 com_err(com, 0, "Bad value - %s", buf);
1178         else
1179                 *val = v;
1180 }
1181
1182 static void modify_u32(char *com, const char *prompt,
1183                        const char *format, __u32 *val)
1184 {
1185         char buf[200];
1186         unsigned long v;
1187         char *tmp;
1188
1189         sprintf(buf, format, *val);
1190         printf("%30s    [%s] ", prompt, buf);
1191         if (!fgets(buf, sizeof(buf), stdin))
1192                 return;
1193         if (buf[strlen (buf) - 1] == '\n')
1194                 buf[strlen (buf) - 1] = '\0';
1195         if (!buf[0])
1196                 return;
1197         v = strtoul(buf, &tmp, 0);
1198         if (*tmp)
1199                 com_err(com, 0, "Bad value - %s", buf);
1200         else
1201                 *val = v;
1202 }
1203
1204
1205 void do_modify_inode(int argc, char *argv[])
1206 {
1207         struct ext2_inode inode;
1208         ext2_ino_t      inode_num;
1209         int             i;
1210         unsigned char   *frag, *fsize;
1211         char            buf[80];
1212         int             os;
1213         const char      *hex_format = "0x%x";
1214         const char      *octal_format = "0%o";
1215         const char      *decimal_format = "%d";
1216         const char      *unsignedlong_format = "%lu";
1217
1218         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1219                 return;
1220
1221         os = current_fs->super->s_creator_os;
1222
1223         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1224                 return;
1225
1226         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1227         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1228         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1229         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1230         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1231         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1232         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1233         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1234         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1235         if (os == EXT2_OS_LINUX)
1236                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1237                            &inode.osd2.linux2.l_i_blocks_hi);
1238         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1239         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1240         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1241 #if 0
1242         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1243 #endif
1244         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1245         if (LINUX_S_ISDIR(inode.i_mode))
1246                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1247         else
1248                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1249
1250         if (os == EXT2_OS_HURD)
1251                 modify_u32(argv[0], "Translator Block",
1252                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1253
1254         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1255         switch (os) {
1256             case EXT2_OS_HURD:
1257                 frag = &inode.osd2.hurd2.h_i_frag;
1258                 fsize = &inode.osd2.hurd2.h_i_fsize;
1259                 break;
1260             default:
1261                 frag = fsize = 0;
1262         }
1263         if (frag)
1264                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1265         if (fsize)
1266                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1267
1268         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1269                 sprintf(buf, "Direct Block #%d", i);
1270                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1271         }
1272         modify_u32(argv[0], "Indirect Block", decimal_format,
1273                     &inode.i_block[EXT2_IND_BLOCK]);
1274         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1275                     &inode.i_block[EXT2_DIND_BLOCK]);
1276         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1277                     &inode.i_block[EXT2_TIND_BLOCK]);
1278         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1279                 return;
1280 }
1281 #endif /* READ_ONLY */
1282
1283 void do_change_working_dir(int argc, char *argv[])
1284 {
1285         ext2_ino_t      inode;
1286         int             retval;
1287
1288         if (common_inode_args_process(argc, argv, &inode, 0))
1289                 return;
1290
1291         retval = ext2fs_check_directory(current_fs, inode);
1292         if (retval) {
1293                 com_err(argv[1], retval, 0);
1294                 return;
1295         }
1296         cwd = inode;
1297         return;
1298 }
1299
1300 void do_print_working_directory(int argc, char *argv[])
1301 {
1302         int     retval;
1303         char    *pathname = NULL;
1304
1305         if (common_args_process(argc, argv, 1, 1,
1306                                 "print_working_directory", "", 0))
1307                 return;
1308
1309         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1310         if (retval) {
1311                 com_err(argv[0], retval,
1312                         "while trying to get pathname of cwd");
1313         }
1314         printf("[pwd]   INODE: %6u  PATH: %s\n",
1315                cwd, pathname ? pathname : "NULL");
1316         if (pathname) {
1317                 free(pathname);
1318                 pathname = NULL;
1319         }
1320         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1321         if (retval) {
1322                 com_err(argv[0], retval,
1323                         "while trying to get pathname of root");
1324         }
1325         printf("[root]  INODE: %6u  PATH: %s\n",
1326                root, pathname ? pathname : "NULL");
1327         if (pathname) {
1328                 free(pathname);
1329                 pathname = NULL;
1330         }
1331         return;
1332 }
1333
1334 #ifndef READ_ONLY
1335 static void make_link(char *sourcename, char *destname)
1336 {
1337         ext2_ino_t      ino;
1338         struct ext2_inode inode;
1339         int             retval;
1340         ext2_ino_t      dir;
1341         char            *dest, *cp, *base_name;
1342
1343         /*
1344          * Get the source inode
1345          */
1346         ino = string_to_inode(sourcename);
1347         if (!ino)
1348                 return;
1349         base_name = strrchr(sourcename, '/');
1350         if (base_name)
1351                 base_name++;
1352         else
1353                 base_name = sourcename;
1354         /*
1355          * Figure out the destination.  First see if it exists and is
1356          * a directory.
1357          */
1358         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1359                 dest = base_name;
1360         else {
1361                 /*
1362                  * OK, it doesn't exist.  See if it is
1363                  * '<dir>/basename' or 'basename'
1364                  */
1365                 cp = strrchr(destname, '/');
1366                 if (cp) {
1367                         *cp = 0;
1368                         dir = string_to_inode(destname);
1369                         if (!dir)
1370                                 return;
1371                         dest = cp+1;
1372                 } else {
1373                         dir = cwd;
1374                         dest = destname;
1375                 }
1376         }
1377
1378         if (debugfs_read_inode(ino, &inode, sourcename))
1379                 return;
1380
1381         retval = ext2fs_link(current_fs, dir, dest, ino,
1382                              ext2_file_type(inode.i_mode));
1383         if (retval)
1384                 com_err("make_link", retval, 0);
1385         return;
1386 }
1387
1388
1389 void do_link(int argc, char *argv[])
1390 {
1391         if (common_args_process(argc, argv, 3, 3, "link",
1392                                 "<source file> <dest_name>", CHECK_FS_RW))
1393                 return;
1394
1395         make_link(argv[1], argv[2]);
1396 }
1397
1398 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1399                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1400                             blk64_t ref_block EXT2FS_ATTR((unused)),
1401                             int ref_offset EXT2FS_ATTR((unused)),
1402                             void *private EXT2FS_ATTR((unused)))
1403 {
1404         blk64_t block;
1405
1406         block = *blocknr;
1407         ext2fs_block_alloc_stats2(fs, block, +1);
1408         return 0;
1409 }
1410
1411 void do_undel(int argc, char *argv[])
1412 {
1413         ext2_ino_t      ino;
1414         struct ext2_inode inode;
1415
1416         if (common_args_process(argc, argv, 2, 3, "undelete",
1417                                 "<inode_num> [dest_name]",
1418                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1419                 return;
1420
1421         ino = string_to_inode(argv[1]);
1422         if (!ino)
1423                 return;
1424
1425         if (debugfs_read_inode(ino, &inode, argv[1]))
1426                 return;
1427
1428         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1429                 com_err(argv[1], 0, "Inode is not marked as deleted");
1430                 return;
1431         }
1432
1433         /*
1434          * XXX this function doesn't handle changing the links count on the
1435          * parent directory when undeleting a directory.
1436          */
1437         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1438         inode.i_dtime = 0;
1439
1440         if (debugfs_write_inode(ino, &inode, argv[0]))
1441                 return;
1442
1443         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1444                               mark_blocks_proc, NULL);
1445
1446         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1447
1448         if (argc > 2)
1449                 make_link(argv[1], argv[2]);
1450 }
1451
1452 static void unlink_file_by_name(char *filename)
1453 {
1454         int             retval;
1455         ext2_ino_t      dir;
1456         char            *base_name;
1457
1458         base_name = strrchr(filename, '/');
1459         if (base_name) {
1460                 *base_name++ = '\0';
1461                 dir = string_to_inode(filename);
1462                 if (!dir)
1463                         return;
1464         } else {
1465                 dir = cwd;
1466                 base_name = filename;
1467         }
1468         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1469         if (retval)
1470                 com_err("unlink_file_by_name", retval, 0);
1471         return;
1472 }
1473
1474 void do_unlink(int argc, char *argv[])
1475 {
1476         if (common_args_process(argc, argv, 2, 2, "link",
1477                                 "<pathname>", CHECK_FS_RW))
1478                 return;
1479
1480         unlink_file_by_name(argv[1]);
1481 }
1482 #endif /* READ_ONLY */
1483
1484 void do_find_free_block(int argc, char *argv[])
1485 {
1486         blk64_t free_blk, goal, first_free = 0;
1487         int             count;
1488         errcode_t       retval;
1489         char            *tmp;
1490
1491         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1492                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1493                 return;
1494         }
1495         if (check_fs_open(argv[0]))
1496                 return;
1497
1498         if (argc > 1) {
1499                 count = strtol(argv[1],&tmp,0);
1500                 if (*tmp) {
1501                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1502                         return;
1503                 }
1504         } else
1505                 count = 1;
1506
1507         if (argc > 2) {
1508                 goal = strtol(argv[2], &tmp, 0);
1509                 if (*tmp) {
1510                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1511                         return;
1512                 }
1513         }
1514         else
1515                 goal = current_fs->super->s_first_data_block;
1516
1517         printf("Free blocks found: ");
1518         free_blk = goal - 1;
1519         while (count-- > 0) {
1520                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1521                                            &free_blk);
1522                 if (first_free) {
1523                         if (first_free == free_blk)
1524                                 break;
1525                 } else
1526                         first_free = free_blk;
1527                 if (retval) {
1528                         com_err("ext2fs_new_block", retval, 0);
1529                         return;
1530                 } else
1531                         printf("%llu ", free_blk);
1532         }
1533         printf("\n");
1534 }
1535
1536 void do_find_free_inode(int argc, char *argv[])
1537 {
1538         ext2_ino_t      free_inode, dir;
1539         int             mode;
1540         int             retval;
1541         char            *tmp;
1542
1543         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1544                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1545                 return;
1546         }
1547         if (check_fs_open(argv[0]))
1548                 return;
1549
1550         if (argc > 1) {
1551                 dir = strtol(argv[1], &tmp, 0);
1552                 if (*tmp) {
1553                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1554                         return;
1555                 }
1556         }
1557         else
1558                 dir = root;
1559         if (argc > 2) {
1560                 mode = strtol(argv[2], &tmp, 0);
1561                 if (*tmp) {
1562                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1563                         return;
1564                 }
1565         } else
1566                 mode = 010755;
1567
1568         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1569         if (retval)
1570                 com_err("ext2fs_new_inode", retval, 0);
1571         else
1572                 printf("Free inode found: %u\n", free_inode);
1573 }
1574
1575 #ifndef READ_ONLY
1576 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1577 {
1578         ext2_file_t     e2_file;
1579         errcode_t       retval;
1580         int             got;
1581         unsigned int    written;
1582         char            buf[8192];
1583         char            *ptr;
1584
1585         retval = ext2fs_file_open(current_fs, newfile,
1586                                   EXT2_FILE_WRITE, &e2_file);
1587         if (retval)
1588                 return retval;
1589
1590         while (1) {
1591                 got = read(fd, buf, sizeof(buf));
1592                 if (got == 0)
1593                         break;
1594                 if (got < 0) {
1595                         retval = errno;
1596                         goto fail;
1597                 }
1598                 ptr = buf;
1599                 while (got > 0) {
1600                         retval = ext2fs_file_write(e2_file, ptr,
1601                                                    got, &written);
1602                         if (retval)
1603                                 goto fail;
1604
1605                         got -= written;
1606                         ptr += written;
1607                 }
1608         }
1609         retval = ext2fs_file_close(e2_file);
1610         return retval;
1611
1612 fail:
1613         (void) ext2fs_file_close(e2_file);
1614         return retval;
1615 }
1616
1617
1618 void do_write(int argc, char *argv[])
1619 {
1620         int             fd;
1621         struct stat     statbuf;
1622         ext2_ino_t      newfile;
1623         errcode_t       retval;
1624         struct ext2_inode inode;
1625
1626         if (common_args_process(argc, argv, 3, 3, "write",
1627                                 "<native file> <new file>", CHECK_FS_RW))
1628                 return;
1629
1630         fd = open(argv[1], O_RDONLY);
1631         if (fd < 0) {
1632                 com_err(argv[1], errno, 0);
1633                 return;
1634         }
1635         if (fstat(fd, &statbuf) < 0) {
1636                 com_err(argv[1], errno, 0);
1637                 close(fd);
1638                 return;
1639         }
1640
1641         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1642         if (retval == 0) {
1643                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1644                 close(fd);
1645                 return;
1646         }
1647
1648         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1649         if (retval) {
1650                 com_err(argv[0], retval, 0);
1651                 close(fd);
1652                 return;
1653         }
1654         printf("Allocated inode: %u\n", newfile);
1655         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1656                              EXT2_FT_REG_FILE);
1657         if (retval == EXT2_ET_DIR_NO_SPACE) {
1658                 retval = ext2fs_expand_dir(current_fs, cwd);
1659                 if (retval) {
1660                         com_err(argv[0], retval, "while expanding directory");
1661                         close(fd);
1662                         return;
1663                 }
1664                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1665                                      EXT2_FT_REG_FILE);
1666         }
1667         if (retval) {
1668                 com_err(argv[2], retval, 0);
1669                 close(fd);
1670                 return;
1671         }
1672         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1673                 com_err(argv[0], 0, "Warning: inode already set");
1674         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1675         memset(&inode, 0, sizeof(inode));
1676         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1677         inode.i_atime = inode.i_ctime = inode.i_mtime =
1678                 current_fs->now ? current_fs->now : time(0);
1679         inode.i_links_count = 1;
1680         inode.i_size = statbuf.st_size;
1681         if (current_fs->super->s_feature_incompat &
1682             EXT3_FEATURE_INCOMPAT_EXTENTS)
1683                 inode.i_flags |= EXT4_EXTENTS_FL;
1684         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1685                 close(fd);
1686                 return;
1687         }
1688         if (LINUX_S_ISREG(inode.i_mode)) {
1689                 retval = copy_file(fd, newfile);
1690                 if (retval)
1691                         com_err("copy_file", retval, 0);
1692         }
1693         close(fd);
1694 }
1695
1696 void do_mknod(int argc, char *argv[])
1697 {
1698         unsigned long   mode, major, minor;
1699         ext2_ino_t      newfile;
1700         errcode_t       retval;
1701         struct ext2_inode inode;
1702         int             filetype, nr;
1703
1704         if (check_fs_open(argv[0]))
1705                 return;
1706         if (argc < 3 || argv[2][1]) {
1707         usage:
1708                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1709                 return;
1710         }
1711         mode = minor = major = 0;
1712         switch (argv[2][0]) {
1713                 case 'p':
1714                         mode = LINUX_S_IFIFO;
1715                         filetype = EXT2_FT_FIFO;
1716                         nr = 3;
1717                         break;
1718                 case 'c':
1719                         mode = LINUX_S_IFCHR;
1720                         filetype = EXT2_FT_CHRDEV;
1721                         nr = 5;
1722                         break;
1723                 case 'b':
1724                         mode = LINUX_S_IFBLK;
1725                         filetype = EXT2_FT_BLKDEV;
1726                         nr = 5;
1727                         break;
1728                 default:
1729                         filetype = 0;
1730                         nr = 0;
1731         }
1732         if (nr == 5) {
1733                 major = strtoul(argv[3], argv+3, 0);
1734                 minor = strtoul(argv[4], argv+4, 0);
1735                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1736                         nr = 0;
1737         }
1738         if (argc != nr)
1739                 goto usage;
1740         if (check_fs_read_write(argv[0]))
1741                 return;
1742         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1743         if (retval) {
1744                 com_err(argv[0], retval, 0);
1745                 return;
1746         }
1747         printf("Allocated inode: %u\n", newfile);
1748         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1749         if (retval == EXT2_ET_DIR_NO_SPACE) {
1750                 retval = ext2fs_expand_dir(current_fs, cwd);
1751                 if (retval) {
1752                         com_err(argv[0], retval, "while expanding directory");
1753                         return;
1754                 }
1755                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1756                                      filetype);
1757         }
1758         if (retval) {
1759                 com_err(argv[1], retval, 0);
1760                 return;
1761         }
1762         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1763                 com_err(argv[0], 0, "Warning: inode already set");
1764         ext2fs_mark_inode_bitmap2(current_fs->inode_map, newfile);
1765         ext2fs_mark_ib_dirty(current_fs);
1766         memset(&inode, 0, sizeof(inode));
1767         inode.i_mode = mode;
1768         inode.i_atime = inode.i_ctime = inode.i_mtime =
1769                 current_fs->now ? current_fs->now : time(0);
1770         if ((major < 256) && (minor < 256)) {
1771                 inode.i_block[0] = major*256+minor;
1772                 inode.i_block[1] = 0;
1773         } else {
1774                 inode.i_block[0] = 0;
1775                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1776         }
1777         inode.i_links_count = 1;
1778         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1779                 return;
1780 }
1781
1782 void do_mkdir(int argc, char *argv[])
1783 {
1784         char    *cp;
1785         ext2_ino_t      parent;
1786         char    *name;
1787         errcode_t retval;
1788
1789         if (common_args_process(argc, argv, 2, 2, "mkdir",
1790                                 "<filename>", CHECK_FS_RW))
1791                 return;
1792
1793         cp = strrchr(argv[1], '/');
1794         if (cp) {
1795                 *cp = 0;
1796                 parent = string_to_inode(argv[1]);
1797                 if (!parent) {
1798                         com_err(argv[1], ENOENT, 0);
1799                         return;
1800                 }
1801                 name = cp+1;
1802         } else {
1803                 parent = cwd;
1804                 name = argv[1];
1805         }
1806
1807 try_again:
1808         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1809         if (retval == EXT2_ET_DIR_NO_SPACE) {
1810                 retval = ext2fs_expand_dir(current_fs, parent);
1811                 if (retval) {
1812                         com_err(argv[0], retval, "while expanding directory");
1813                         return;
1814                 }
1815                 goto try_again;
1816         }
1817         if (retval) {
1818                 com_err("ext2fs_mkdir", retval, 0);
1819                 return;
1820         }
1821
1822 }
1823
1824 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1825                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1826                                blk64_t ref_block EXT2FS_ATTR((unused)),
1827                                int ref_offset EXT2FS_ATTR((unused)),
1828                                void *private EXT2FS_ATTR((unused)))
1829 {
1830         blk64_t block;
1831
1832         block = *blocknr;
1833         ext2fs_block_alloc_stats2(fs, block, -1);
1834         return 0;
1835 }
1836
1837 static void kill_file_by_inode(ext2_ino_t inode)
1838 {
1839         struct ext2_inode inode_buf;
1840
1841         if (debugfs_read_inode(inode, &inode_buf, 0))
1842                 return;
1843         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1844         if (debugfs_write_inode(inode, &inode_buf, 0))
1845                 return;
1846         if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf))
1847                 return;
1848
1849         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1850                               release_blocks_proc, NULL);
1851         printf("\n");
1852         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1853                                   LINUX_S_ISDIR(inode_buf.i_mode));
1854 }
1855
1856
1857 void do_kill_file(int argc, char *argv[])
1858 {
1859         ext2_ino_t inode_num;
1860
1861         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1862                 return;
1863
1864         kill_file_by_inode(inode_num);
1865 }
1866
1867 void do_rm(int argc, char *argv[])
1868 {
1869         int retval;
1870         ext2_ino_t inode_num;
1871         struct ext2_inode inode;
1872
1873         if (common_args_process(argc, argv, 2, 2, "rm",
1874                                 "<filename>", CHECK_FS_RW))
1875                 return;
1876
1877         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1878         if (retval) {
1879                 com_err(argv[0], retval, "while trying to resolve filename");
1880                 return;
1881         }
1882
1883         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1884                 return;
1885
1886         if (LINUX_S_ISDIR(inode.i_mode)) {
1887                 com_err(argv[0], 0, "file is a directory");
1888                 return;
1889         }
1890
1891         --inode.i_links_count;
1892         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1893                 return;
1894
1895         unlink_file_by_name(argv[1]);
1896         if (inode.i_links_count == 0)
1897                 kill_file_by_inode(inode_num);
1898 }
1899
1900 struct rd_struct {
1901         ext2_ino_t      parent;
1902         int             empty;
1903 };
1904
1905 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1906                       int       entry EXT2FS_ATTR((unused)),
1907                       struct ext2_dir_entry *dirent,
1908                       int       offset EXT2FS_ATTR((unused)),
1909                       int       blocksize EXT2FS_ATTR((unused)),
1910                       char      *buf EXT2FS_ATTR((unused)),
1911                       void      *private)
1912 {
1913         struct rd_struct *rds = (struct rd_struct *) private;
1914
1915         if (dirent->inode == 0)
1916                 return 0;
1917         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1918                 return 0;
1919         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1920             (dirent->name[1] == '.')) {
1921                 rds->parent = dirent->inode;
1922                 return 0;
1923         }
1924         rds->empty = 0;
1925         return 0;
1926 }
1927
1928 void do_rmdir(int argc, char *argv[])
1929 {
1930         int retval;
1931         ext2_ino_t inode_num;
1932         struct ext2_inode inode;
1933         struct rd_struct rds;
1934
1935         if (common_args_process(argc, argv, 2, 2, "rmdir",
1936                                 "<filename>", CHECK_FS_RW))
1937                 return;
1938
1939         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1940         if (retval) {
1941                 com_err(argv[0], retval, "while trying to resolve filename");
1942                 return;
1943         }
1944
1945         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1946                 return;
1947
1948         if (!LINUX_S_ISDIR(inode.i_mode)) {
1949                 com_err(argv[0], 0, "file is not a directory");
1950                 return;
1951         }
1952
1953         rds.parent = 0;
1954         rds.empty = 1;
1955
1956         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1957                                     0, rmdir_proc, &rds);
1958         if (retval) {
1959                 com_err(argv[0], retval, "while iterating over directory");
1960                 return;
1961         }
1962         if (rds.empty == 0) {
1963                 com_err(argv[0], 0, "directory not empty");
1964                 return;
1965         }
1966
1967         inode.i_links_count = 0;
1968         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1969                 return;
1970
1971         unlink_file_by_name(argv[1]);
1972         kill_file_by_inode(inode_num);
1973
1974         if (rds.parent) {
1975                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1976                         return;
1977                 if (inode.i_links_count > 1)
1978                         inode.i_links_count--;
1979                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1980                         return;
1981         }
1982 }
1983 #endif /* READ_ONLY */
1984
1985 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1986                             char *argv[] EXT2FS_ATTR((unused)))
1987 {
1988         if (current_fs)
1989                 printf("Open mode: read-%s\n",
1990                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1991         printf("Filesystem in use: %s\n",
1992                current_fs ? current_fs->device_name : "--none--");
1993 }
1994
1995 #ifndef READ_ONLY
1996 void do_expand_dir(int argc, char *argv[])
1997 {
1998         ext2_ino_t inode;
1999         int retval;
2000
2001         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
2002                 return;
2003
2004         retval = ext2fs_expand_dir(current_fs, inode);
2005         if (retval)
2006                 com_err("ext2fs_expand_dir", retval, 0);
2007         return;
2008 }
2009
2010 void do_features(int argc, char *argv[])
2011 {
2012         int     i;
2013
2014         if (check_fs_open(argv[0]))
2015                 return;
2016
2017         if ((argc != 1) && check_fs_read_write(argv[0]))
2018                 return;
2019         for (i=1; i < argc; i++) {
2020                 if (e2p_edit_feature(argv[i],
2021                                      &current_fs->super->s_feature_compat, 0))
2022                         com_err(argv[0], 0, "Unknown feature: %s\n",
2023                                 argv[i]);
2024                 else
2025                         ext2fs_mark_super_dirty(current_fs);
2026         }
2027         print_features(current_fs->super, stdout);
2028 }
2029 #endif /* READ_ONLY */
2030
2031 void do_bmap(int argc, char *argv[])
2032 {
2033         ext2_ino_t      ino;
2034         blk64_t         blk, pblk;
2035         int             err;
2036         errcode_t       errcode;
2037
2038         if (common_args_process(argc, argv, 3, 3, argv[0],
2039                                 "<file> logical_blk", 0))
2040                 return;
2041
2042         ino = string_to_inode(argv[1]);
2043         if (!ino)
2044                 return;
2045         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
2046
2047         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
2048         if (errcode) {
2049                 com_err("argv[0]", errcode,
2050                         "while mapping logical block %llu\n", blk);
2051                 return;
2052         }
2053         printf("%llu\n", pblk);
2054 }
2055
2056 void do_imap(int argc, char *argv[])
2057 {
2058         ext2_ino_t      ino;
2059         unsigned long   group, block, block_nr, offset;
2060
2061         if (common_args_process(argc, argv, 2, 2, argv[0],
2062                                 "<file>", 0))
2063                 return;
2064         ino = string_to_inode(argv[1]);
2065         if (!ino)
2066                 return;
2067
2068         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2069         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2070                 EXT2_INODE_SIZE(current_fs->super);
2071         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2072         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2073                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2074                         group);
2075                 return;
2076         }
2077         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2078                 block;
2079         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2080
2081         printf("Inode %d is part of block group %lu\n"
2082                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2083                block_nr, offset);
2084
2085 }
2086
2087 #ifndef READ_ONLY
2088 void do_set_current_time(int argc, char *argv[])
2089 {
2090         time_t now;
2091
2092         if (common_args_process(argc, argv, 2, 2, argv[0],
2093                                 "<time>", 0))
2094                 return;
2095
2096         now = string_to_time(argv[1]);
2097         if (now == ((time_t) -1)) {
2098                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2099                         argv[1]);
2100                 return;
2101
2102         } else {
2103                 printf("Setting current time to %s\n", time_to_string(now));
2104                 current_fs->now = now;
2105         }
2106 }
2107 #endif /* READ_ONLY */
2108
2109 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2110 {
2111         int compat, bit, ret;
2112         unsigned int feature_mask;
2113
2114         if (name) {
2115                 if (feature_type == E2P_FS_FEATURE)
2116                         ret = e2p_string2feature(name, &compat, &feature_mask);
2117                 else
2118                         ret = e2p_jrnl_string2feature(name, &compat,
2119                                                       &feature_mask);
2120                 if (ret)
2121                         return ret;
2122
2123                 if (!(supp[compat] & feature_mask))
2124                         return 1;
2125         } else {
2126                 for (compat = 0; compat < 3; compat++) {
2127                         for (bit = 0, feature_mask = 1; bit < 32;
2128                              bit++, feature_mask <<= 1) {
2129                                 if (supp[compat] & feature_mask) {
2130                                         if (feature_type == E2P_FS_FEATURE)
2131                                                 fprintf(stdout, " %s",
2132                                                 e2p_feature2string(compat,
2133                                                 feature_mask));
2134                                         else
2135                                                 fprintf(stdout, " %s",
2136                                                 e2p_jrnl_feature2string(compat,
2137                                                 feature_mask));
2138                                 }
2139                         }
2140                 }
2141                 fprintf(stdout, "\n");
2142         }
2143
2144         return 0;
2145 }
2146
2147 void do_supported_features(int argc, char *argv[])
2148 {
2149         int     ret;
2150         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2151                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2152                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2153         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2154                                  JFS_KNOWN_INCOMPAT_FEATURES,
2155                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2156
2157         if (argc > 1) {
2158                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2159                 if (ret) {
2160                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2161                                                 argv[1]);
2162                 }
2163                 if (ret)
2164                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2165                 else
2166                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2167         } else {
2168                 fprintf(stdout, "Supported features:");
2169                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2170                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2171         }
2172 }
2173
2174 #ifndef READ_ONLY
2175 void do_punch(int argc, char *argv[])
2176 {
2177         ext2_ino_t      ino;
2178         blk64_t         start, end;
2179         int             err;
2180         errcode_t       errcode;
2181
2182         if (common_args_process(argc, argv, 3, 4, argv[0],
2183                                 "<file> start_blk [end_blk]",
2184                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2185                 return;
2186
2187         ino = string_to_inode(argv[1]);
2188         if (!ino)
2189                 return;
2190         start = parse_ulong(argv[2], argv[0], "logical_block", &err);
2191         if (argc == 4)
2192                 end = parse_ulong(argv[3], argv[0], "logical_block", &err);
2193         else
2194                 end = ~0;
2195
2196         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2197
2198         if (errcode) {
2199                 com_err(argv[0], errcode,
2200                         "while truncating inode %u from %llu to %llu\n", ino,
2201                         (unsigned long long) start, (unsigned long long) end);
2202                 return;
2203         }
2204 }
2205 #endif /* READ_ONLY */
2206
2207 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2208 {
2209 #if CONFIG_MMP
2210         struct ext2_super_block *sb;
2211         struct mmp_struct *mmp_s;
2212         time_t t;
2213         errcode_t retval = 0;
2214
2215         if (check_fs_open(argv[0]))
2216                 return;
2217
2218         sb  = current_fs->super;
2219         if (sb->s_mmp_block <= sb->s_first_data_block ||
2220             sb->s_mmp_block >= ext2fs_blocks_count(sb)) {
2221                 com_err(argv[0], EXT2_ET_MMP_BAD_BLOCK, "while dumping it.\n");
2222                 return;
2223         }
2224
2225         if (current_fs->mmp_buf == NULL) {
2226                 retval = ext2fs_get_mem(current_fs->blocksize,
2227                                         &current_fs->mmp_buf);
2228                 if (retval) {
2229                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2230                         return;
2231                 }
2232         }
2233
2234         mmp_s = current_fs->mmp_buf;
2235
2236         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2237                                  current_fs->mmp_buf);
2238         if (retval) {
2239                 com_err(argv[0], retval, "reading MMP block.\n");
2240                 return;
2241         }
2242
2243         t = mmp_s->mmp_time;
2244         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2245         fprintf(stdout, "update_interval: %d\n",
2246                 current_fs->super->s_mmp_update_interval);
2247         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2248         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2249         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2250         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2251         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2252         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2253         fprintf(stdout, "checksum: 0x%08x\n", mmp_s->mmp_checksum);
2254 #else
2255         fprintf(stdout, "MMP is unsupported, please recompile with "
2256                         "--enable-mmp\n");
2257 #endif
2258 }
2259
2260 static int source_file(const char *cmd_file, int sci_idx)
2261 {
2262         FILE            *f;
2263         char            buf[256];
2264         char            *cp;
2265         int             exit_status = 0;
2266         int             retval;
2267
2268         if (strcmp(cmd_file, "-") == 0)
2269                 f = stdin;
2270         else {
2271                 f = fopen(cmd_file, "r");
2272                 if (!f) {
2273                         perror(cmd_file);
2274                         exit(1);
2275                 }
2276         }
2277         fflush(stdout);
2278         fflush(stderr);
2279         setbuf(stdout, NULL);
2280         setbuf(stderr, NULL);
2281         while (!feof(f)) {
2282                 if (fgets(buf, sizeof(buf), f) == NULL)
2283                         break;
2284                 cp = strchr(buf, '\n');
2285                 if (cp)
2286                         *cp = 0;
2287                 cp = strchr(buf, '\r');
2288                 if (cp)
2289                         *cp = 0;
2290                 printf("debugfs: %s\n", buf);
2291                 retval = ss_execute_line(sci_idx, buf);
2292                 if (retval) {
2293                         ss_perror(sci_idx, retval, buf);
2294                         exit_status++;
2295                 }
2296         }
2297         if (f != stdin)
2298                 fclose(f);
2299         return exit_status;
2300 }
2301
2302 int main(int argc, char **argv)
2303 {
2304         int             retval;
2305         int             sci_idx;
2306         const char      *usage =
2307                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2308                 "[-R request] [-V] ["
2309 #ifndef READ_ONLY
2310                 "[-w] "
2311 #endif
2312                 "[-c] device]";
2313         int             c;
2314         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2315         char            *request = 0;
2316         int             exit_status = 0;
2317         char            *cmd_file = 0;
2318         blk64_t         superblock = 0;
2319         blk64_t         blocksize = 0;
2320         int             catastrophic = 0;
2321         char            *data_filename = 0;
2322 #ifdef READ_ONLY
2323         const char      *opt_string = "nicR:f:b:s:Vd:D";
2324 #else
2325         const char      *opt_string = "niwcR:f:b:s:Vd:D";
2326 #endif
2327
2328         if (debug_prog_name == 0)
2329 #ifdef READ_ONLY
2330                 debug_prog_name = "rdebugfs";
2331 #else
2332                 debug_prog_name = "debugfs";
2333 #endif
2334         add_error_table(&et_ext2_error_table);
2335         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2336                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2337
2338         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2339                 switch (c) {
2340                 case 'R':
2341                         request = optarg;
2342                         break;
2343                 case 'f':
2344                         cmd_file = optarg;
2345                         break;
2346                 case 'd':
2347                         data_filename = optarg;
2348                         break;
2349                 case 'i':
2350                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2351                         break;
2352                 case 'n':
2353                         open_flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
2354                         break;
2355 #ifndef READ_ONLY
2356                 case 'w':
2357                         open_flags |= EXT2_FLAG_RW;
2358                         break;
2359 #endif
2360                 case 'D':
2361                         open_flags |= EXT2_FLAG_DIRECT_IO;
2362                         break;
2363                 case 'b':
2364                         blocksize = parse_ulong(optarg, argv[0],
2365                                                 "block size", 0);
2366                         break;
2367                 case 's':
2368                         superblock = parse_ulong(optarg, argv[0],
2369                                                  "superblock number", 0);
2370                         break;
2371                 case 'c':
2372                         catastrophic = 1;
2373                         break;
2374                 case 'V':
2375                         /* Print version number and exit */
2376                         fprintf(stderr, "\tUsing %s\n",
2377                                 error_message(EXT2_ET_BASE));
2378                         exit(0);
2379                 default:
2380                         com_err(argv[0], 0, usage, debug_prog_name);
2381                         return 1;
2382                 }
2383         }
2384         if (optind < argc)
2385                 open_filesystem(argv[optind], open_flags,
2386                                 superblock, blocksize, catastrophic,
2387                                 data_filename);
2388
2389         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2390                                        &debug_cmds, &retval);
2391         if (retval) {
2392                 ss_perror(sci_idx, retval, "creating invocation");
2393                 exit(1);
2394         }
2395         ss_get_readline(sci_idx);
2396
2397         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2398         if (retval) {
2399                 ss_perror(sci_idx, retval, "adding standard requests");
2400                 exit (1);
2401         }
2402         if (extra_cmds)
2403                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2404         if (retval) {
2405                 ss_perror(sci_idx, retval, "adding extra requests");
2406                 exit (1);
2407         }
2408         if (request) {
2409                 retval = 0;
2410                 retval = ss_execute_line(sci_idx, request);
2411                 if (retval) {
2412                         ss_perror(sci_idx, retval, request);
2413                         exit_status++;
2414                 }
2415         } else if (cmd_file) {
2416                 exit_status = source_file(cmd_file, sci_idx);
2417         } else {
2418                 ss_listen(sci_idx);
2419         }
2420
2421         ss_delete_invocation(sci_idx);
2422
2423         if (current_fs)
2424                 close_filesystem();
2425
2426         remove_error_table(&et_ext2_error_table);
2427         return exit_status;
2428 }