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 "debugfs.h"
  32 #include "uuid/uuid.h"
  33 #include "e2p/e2p.h"
  34
  35 #include <ext2fs/ext2_ext_attr.h>
  36
  37 #include "../version.h"
  38 #include "jfs_user.h"
  39
  40 #ifndef BUFSIZ
  41 #define BUFSIZ 8192
  42 #endif
  43
  44 /* 64KiB is the minimium blksize to best minimize system call overhead. */
  45 #ifndef IO_BUFSIZE
  46 #define IO_BUFSIZE 64*1024
  47 #endif
  48
  49 /* Block size for `st_blocks' */
  50 #ifndef S_BLKSIZE
  51 #define S_BLKSIZE 512
  52 #endif
  53
  54 ss_request_table *extra_cmds;
  55 const char *debug_prog_name;
  56 int sci_idx;
  57
  58 ext2_filsys     current_fs = NULL;
  59 ext2_ino_t      root, cwd;
  60
  61 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
  62                             blk64_t blocksize, int catastrophic,
  63                             char *data_filename)
  64 {
  65         int     retval;
  66         io_channel data_io = 0;
  67
  68         if (superblock != 0 && blocksize == 0) {
  69                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  70                 current_fs = NULL;
  71                 return;
  72         }
  73
  74         if (data_filename) {
  75                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  76                         com_err(device, 0,
  77                                 "The -d option is only valid when reading an e2image file");
  78                         current_fs = NULL;
  79                         return;
  80                 }
  81                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  82                 if (retval) {
  83                         com_err(data_filename, 0, "while opening data source");
  84                         current_fs = NULL;
  85                         return;
  86                 }
  87         }
  88
  89         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  90                 com_err(device, 0,
  91                         "opening read-only because of catastrophic mode");
  92                 open_flags &= ~EXT2_FLAG_RW;
  93         }
  94         if (catastrophic)
  95                 open_flags |= EXT2_FLAG_SKIP_MMP;
  96
  97         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  98                              unix_io_manager, &current_fs);
  99         if (retval) {
 100                 com_err(device, retval, "while opening filesystem");
 101                 current_fs = NULL;
 102                 return;
 103         }
 104         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 105
 106         if (catastrophic)
 107                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 108         else {
 109                 retval = ext2fs_read_inode_bitmap(current_fs);
 110                 if (retval) {
 111                         com_err(device, retval, "while reading inode bitmap");
 112                         goto errout;
 113                 }
 114                 retval = ext2fs_read_block_bitmap(current_fs);
 115                 if (retval) {
 116                         com_err(device, retval, "while reading block bitmap");
 117                         goto errout;
 118                 }
 119         }
 120
 121         if (data_io) {
 122                 retval = ext2fs_set_data_io(current_fs, data_io);
 123                 if (retval) {
 124                         com_err(device, retval,
 125                                 "while setting data source");
 126                         goto errout;
 127                 }
 128         }
 129
 130         root = cwd = EXT2_ROOT_INO;
 131         return;
 132
 133 errout:
 134         retval = ext2fs_close(current_fs);
 135         if (retval)
 136                 com_err(device, retval, "while trying to close filesystem");
 137         current_fs = NULL;
 138 }
 139
 140 void do_open_filesys(int argc, char **argv)
 141 {
 142         int     c, err;
 143         int     catastrophic = 0;
 144         blk64_t superblock = 0;
 145         blk64_t blocksize = 0;
 146         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 147         char    *data_filename = 0;
 148
 149         reset_getopt();
 150         while ((c = getopt (argc, argv, "iwfecb:s:d:D")) != EOF) {
 151                 switch (c) {
 152                 case 'i':
 153                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 154                         break;
 155                 case 'w':
 156 #ifdef READ_ONLY
 157                         goto print_usage;
 158 #else
 159                         open_flags |= EXT2_FLAG_RW;
 160 #endif /* READ_ONLY */
 161                         break;
 162                 case 'f':
 163                         open_flags |= EXT2_FLAG_FORCE;
 164                         break;
 165                 case 'e':
 166                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 167                         break;
 168                 case 'c':
 169                         catastrophic = 1;
 170                         break;
 171                 case 'd':
 172                         data_filename = optarg;
 173                         break;
 174                 case 'D':
 175                         open_flags |= EXT2_FLAG_DIRECT_IO;
 176                         break;
 177                 case 'b':
 178                         blocksize = parse_ulong(optarg, argv[0],
 179                                                 "block size", &err);
 180                         if (err)
 181                                 return;
 182                         break;
 183                 case 's':
 184                         superblock = parse_ulong(optarg, argv[0],
 185                                                  "superblock number", &err);
 186                         if (err)
 187                                 return;
 188                         break;
 189                 default:
 190                         goto print_usage;
 191                 }
 192         }
 193         if (optind != argc-1) {
 194                 goto print_usage;
 195         }
 196         if (check_fs_not_open(argv[0]))
 197                 return;
 198         open_filesystem(argv[optind], open_flags,
 199                         superblock, blocksize, catastrophic,
 200                         data_filename);
 201         return;
 202
 203 print_usage:
 204         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 205                 "[-d image_filename] [-c] [-i] [-f] [-e] [-D] "
 206 #ifndef READ_ONLY
 207                 "[-w] "
 208 #endif
 209                 "<device>\n", argv[0]);
 210 }
 211
 212 void do_lcd(int argc, char **argv)
 213 {
 214         if (argc != 2) {
 215                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 216                 return;
 217         }
 218
 219         if (chdir(argv[1]) == -1) {
 220                 com_err(argv[0], errno,
 221                         "while trying to change native directory to %s",
 222                         argv[1]);
 223                 return;
 224         }
 225 }
 226
 227 static void close_filesystem(NOARGS)
 228 {
 229         int     retval;
 230
 231         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 232                 retval = ext2fs_write_inode_bitmap(current_fs);
 233                 if (retval)
 234                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 235         }
 236         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 237                 retval = ext2fs_write_block_bitmap(current_fs);
 238                 if (retval)
 239                         com_err("ext2fs_write_block_bitmap", retval, 0);
 240         }
 241         retval = ext2fs_close(current_fs);
 242         if (retval)
 243                 com_err("ext2fs_close", retval, 0);
 244         current_fs = NULL;
 245         return;
 246 }
 247
 248 void do_close_filesys(int argc, char **argv)
 249 {
 250         int     c;
 251
 252         if (check_fs_open(argv[0]))
 253                 return;
 254
 255         reset_getopt();
 256         while ((c = getopt (argc, argv, "a")) != EOF) {
 257                 switch (c) {
 258                 case 'a':
 259                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 260                         break;
 261                 default:
 262                         goto print_usage;
 263                 }
 264         }
 265
 266         if (argc > optind) {
 267         print_usage:
 268                 com_err(0, 0, "Usage: close_filesys [-a]");
 269                 return;
 270         }
 271
 272         close_filesystem();
 273 }
 274
 275 #ifndef READ_ONLY
 276 void do_init_filesys(int argc, char **argv)
 277 {
 278         struct ext2_super_block param;
 279         errcode_t       retval;
 280         int             err;
 281
 282         if (common_args_process(argc, argv, 3, 3, "initialize",
 283                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 284                 return;
 285
 286         memset(&param, 0, sizeof(struct ext2_super_block));
 287         ext2fs_blocks_count_set(&param, parse_ulong(argv[2], argv[0],
 288                                                     "blocks count", &err));
 289         if (err)
 290                 return;
 291         retval = ext2fs_initialize(argv[1], 0, &param,
 292                                    unix_io_manager, &current_fs);
 293         if (retval) {
 294                 com_err(argv[1], retval, "while initializing filesystem");
 295                 current_fs = NULL;
 296                 return;
 297         }
 298         root = cwd = EXT2_ROOT_INO;
 299         return;
 300 }
 301
 302 static void print_features(struct ext2_super_block * s, FILE *f)
 303 {
 304         int     i, j, printed=0;
 305         __u32   *mask = &s->s_feature_compat, m;
 306
 307         fputs("Filesystem features:", f);
 308         for (i=0; i <3; i++,mask++) {
 309                 for (j=0,m=1; j < 32; j++, m<<=1) {
 310                         if (*mask & m) {
 311                                 fprintf(f, " %s", e2p_feature2string(i, m));
 312                                 printed++;
 313                         }
 314                 }
 315         }
 316         if (printed == 0)
 317                 fputs("(none)", f);
 318         fputs("\n", f);
 319 }
 320 #endif /* READ_ONLY */
 321
 322 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 323                           const char *str, int *first, FILE *f)
 324 {
 325         if (ext2fs_bg_flags_test(fs, group, mask)) {
 326                 if (*first) {
 327                         fputs("           [", f);
 328                         *first = 0;
 329                 } else
 330                         fputs(", ", f);
 331                 fputs(str, f);
 332         }
 333 }
 334
 335 void do_show_super_stats(int argc, char *argv[])
 336 {
 337         const char *units ="block";
 338         dgrp_t  i;
 339         FILE    *out;
 340         int     c, header_only = 0;
 341         int     numdirs = 0, first, gdt_csum;
 342
 343         reset_getopt();
 344         while ((c = getopt (argc, argv, "h")) != EOF) {
 345                 switch (c) {
 346                 case 'h':
 347                         header_only++;
 348                         break;
 349                 default:
 350                         goto print_usage;
 351                 }
 352         }
 353         if (optind != argc) {
 354                 goto print_usage;
 355         }
 356         if (check_fs_open(argv[0]))
 357                 return;
 358         out = open_pager();
 359
 360         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 361                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 362                 units = "cluster";
 363
 364         list_super2(current_fs->super, out);
 365         for (i=0; i < current_fs->group_desc_count; i++)
 366                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 367         fprintf(out, "Directories:              %d\n", numdirs);
 368
 369         if (header_only) {
 370                 close_pager(out);
 371                 return;
 372         }
 373
 374         gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 375                                               EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 376         for (i = 0; i < current_fs->group_desc_count; i++) {
 377                 fprintf(out, " Group %2d: block bitmap at %llu, "
 378                         "inode bitmap at %llu, "
 379                         "inode table at %llu\n"
 380                         "           %u free %s%s, "
 381                         "%u free %s, "
 382                         "%u used %s%s",
 383                         i, ext2fs_block_bitmap_loc(current_fs, i),
 384                         ext2fs_inode_bitmap_loc(current_fs, i),
 385                         ext2fs_inode_table_loc(current_fs, i),
 386                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 387                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 388                         "s" : "",
 389                         ext2fs_bg_free_inodes_count(current_fs, i),
 390                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 391                         "inodes" : "inode",
 392                         ext2fs_bg_used_dirs_count(current_fs, i),
 393                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 394                                 : "directory", gdt_csum ? ", " : "\n");
 395                 if (gdt_csum)
 396                         fprintf(out, "%u unused %s\n",
 397                                 ext2fs_bg_itable_unused(current_fs, i),
 398                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 399                                 "inodes" : "inode");
 400                 first = 1;
 401                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 402                               &first, out);
 403                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 404                               &first, out);
 405                 if (gdt_csum) {
 406                         fprintf(out, "%sChecksum 0x%04x",
 407                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 408                         first = 0;
 409                 }
 410                 if (!first)
 411                         fputs("]\n", out);
 412         }
 413         close_pager(out);
 414         return;
 415 print_usage:
 416         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 417 }
 418
 419 #ifndef READ_ONLY
 420 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 421                       char **argv EXT2FS_ATTR((unused)))
 422 {
 423         if (check_fs_open(argv[0]))
 424                 return;
 425         if (check_fs_read_write(argv[0]))
 426                 return;
 427
 428         if (argv[1] && !strcmp(argv[1], "-clean"))
 429                 current_fs->super->s_state |= EXT2_VALID_FS;
 430         else
 431                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 432         ext2fs_mark_super_dirty(current_fs);
 433 }
 434 #endif /* READ_ONLY */
 435
 436 struct list_blocks_struct {
 437         FILE            *f;
 438         e2_blkcnt_t     total;
 439         blk64_t         first_block, last_block;
 440         e2_blkcnt_t     first_bcnt, last_bcnt;
 441         e2_blkcnt_t     first;
 442 };
 443
 444 static void finish_range(struct list_blocks_struct *lb)
 445 {
 446         if (lb->first_block == 0)
 447                 return;
 448         if (lb->first)
 449                 lb->first = 0;
 450         else
 451                 fprintf(lb->f, ", ");
 452         if (lb->first_block == lb->last_block)
 453                 fprintf(lb->f, "(%lld):%llu",
 454                         (long long)lb->first_bcnt, lb->first_block);
 455         else
 456                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 457                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 458                         lb->first_block, lb->last_block);
 459         lb->first_block = 0;
 460 }
 461
 462 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 463                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 464                             blk64_t ref_block EXT2FS_ATTR((unused)),
 465                             int ref_offset EXT2FS_ATTR((unused)),
 466                             void *private)
 467 {
 468         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 469
 470         lb->total++;
 471         if (blockcnt >= 0) {
 472                 /*
 473                  * See if we can add on to the existing range (if it exists)
 474                  */
 475                 if (lb->first_block &&
 476                     (lb->last_block+1 == *blocknr) &&
 477                     (lb->last_bcnt+1 == blockcnt)) {
 478                         lb->last_block = *blocknr;
 479                         lb->last_bcnt = blockcnt;
 480                         return 0;
 481                 }
 482                 /*
 483                  * Start a new range.
 484                  */
 485                 finish_range(lb);
 486                 lb->first_block = lb->last_block = *blocknr;
 487                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 488                 return 0;
 489         }
 490         /*
 491          * Not a normal block.  Always force a new range.
 492          */
 493         finish_range(lb);
 494         if (lb->first)
 495                 lb->first = 0;
 496         else
 497                 fprintf(lb->f, ", ");
 498         if (blockcnt == -1)
 499                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 500         else if (blockcnt == -2)
 501                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 502         else if (blockcnt == -3)
 503                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 504         return 0;
 505 }
 506
 507 static void dump_xattr_string(FILE *out, const char *str, int len)
 508 {
 509         int printable = 0;
 510         int i;
 511
 512         /* check: is string "printable enough?" */
 513         for (i = 0; i < len; i++)
 514                 if (isprint(str[i]))
 515                         printable++;
 516
 517         if (printable <= len*7/8)
 518                 printable = 0;
 519
 520         for (i = 0; i < len; i++)
 521                 if (printable)
 522                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 523                                 (unsigned char)str[i]);
 524                 else
 525                         fprintf(out, "%02x ", (unsigned char)str[i]);
 526 }
 527
 528 static void internal_dump_inode_extra(FILE *out,
 529                                       const char *prefix EXT2FS_ATTR((unused)),
 530                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 531                                       struct ext2_inode_large *inode)
 532 {
 533         struct ext2_ext_attr_entry *entry;
 534         __u32 *magic;
 535         char *start, *end;
 536         unsigned int storage_size;
 537
 538         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 539         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 540                         EXT2_GOOD_OLD_INODE_SIZE) {
 541                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 542                                 inode->i_extra_isize);
 543                 return;
 544         }
 545         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 546                         EXT2_GOOD_OLD_INODE_SIZE -
 547                         inode->i_extra_isize;
 548         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 549                         inode->i_extra_isize);
 550         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 551                 fprintf(out, "Extended attributes stored in inode body: \n");
 552                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 553                 start = (char *) magic + sizeof(__u32);
 554                 entry = (struct ext2_ext_attr_entry *) start;
 555                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 556                         struct ext2_ext_attr_entry *next =
 557                                 EXT2_EXT_ATTR_NEXT(entry);
 558                         if (entry->e_value_size > storage_size ||
 559                                         (char *) next >= end) {
 560                                 fprintf(out, "invalid EA entry in inode\n");
 561                                 return;
 562                         }
 563                         fprintf(out, "  ");
 564                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 565                                           entry->e_name_len);
 566                         fprintf(out, " = \"");
 567                         dump_xattr_string(out, start + entry->e_value_offs,
 568                                                 entry->e_value_size);
 569                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 570                         entry = next;
 571                 }
 572         }
 573 }
 574
 575 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 576 {
 577         struct list_blocks_struct lb;
 578
 579         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 580         lb.total = 0;
 581         lb.first_block = 0;
 582         lb.f = f;
 583         lb.first = 1;
 584         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 585                               list_blocks_proc, (void *)&lb);
 586         finish_range(&lb);
 587         if (lb.total)
 588                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 589         fprintf(f,"\n");
 590 }
 591
 592 static int int_log10(unsigned long long arg)
 593 {
 594         int     l = 0;
 595
 596         arg = arg / 10;
 597         while (arg) {
 598                 l++;
 599                 arg = arg / 10;
 600         }
 601         return l;
 602 }
 603
 604 #define DUMP_LEAF_EXTENTS       0x01
 605 #define DUMP_NODE_EXTENTS       0x02
 606 #define DUMP_EXTENT_TABLE       0x04
 607
 608 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 609                          int flags, int logical_width, int physical_width)
 610 {
 611         ext2_extent_handle_t    handle;
 612         struct ext2fs_extent    extent;
 613         struct ext2_extent_info info;
 614         int                     op = EXT2_EXTENT_ROOT;
 615         unsigned int            printed = 0;
 616         errcode_t               errcode;
 617
 618         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 619         if (errcode)
 620                 return;
 621
 622         if (flags & DUMP_EXTENT_TABLE)
 623                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 624                         (logical_width*2)+3, "Logical",
 625                         (physical_width*2)+3, "Physical");
 626         else
 627                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 628
 629         while (1) {
 630                 errcode = ext2fs_extent_get(handle, op, &extent);
 631
 632                 if (errcode)
 633                         break;
 634
 635                 op = EXT2_EXTENT_NEXT;
 636
 637                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 638                         continue;
 639
 640                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 641                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 642                                 continue;
 643                 } else {
 644                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 645                                 continue;
 646                 }
 647
 648                 errcode = ext2fs_extent_get_info(handle, &info);
 649                 if (errcode)
 650                         continue;
 651
 652                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 653                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 654                                 continue;
 655
 656                         if (flags & DUMP_EXTENT_TABLE) {
 657                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 658                                         "%*llu%*s %6u\n",
 659                                         info.curr_level, info.max_depth,
 660                                         info.curr_entry, info.num_entries,
 661                                         logical_width,
 662                                         extent.e_lblk,
 663                                         logical_width,
 664                                         extent.e_lblk + (extent.e_len - 1),
 665                                         physical_width,
 666                                         extent.e_pblk,
 667                                         physical_width+3, "", extent.e_len);
 668                                 continue;
 669                         }
 670
 671                         fprintf(f, "%s(ETB%d):%lld",
 672                                 printed ? ", " : "", info.curr_level,
 673                                 extent.e_pblk);
 674                         printed = 1;
 675                         continue;
 676                 }
 677
 678                 if (flags & DUMP_EXTENT_TABLE) {
 679                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 680                                 "%*llu - %*llu %6u %s\n",
 681                                 info.curr_level, info.max_depth,
 682                                 info.curr_entry, info.num_entries,
 683                                 logical_width,
 684                                 extent.e_lblk,
 685                                 logical_width,
 686                                 extent.e_lblk + (extent.e_len - 1),
 687                                 physical_width,
 688                                 extent.e_pblk,
 689                                 physical_width,
 690                                 extent.e_pblk + (extent.e_len - 1),
 691                                 extent.e_len,
 692                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 693                                         "Uninit" : "");
 694                         continue;
 695                 }
 696
 697                 if (extent.e_len == 0)
 698                         continue;
 699                 else if (extent.e_len == 1)
 700                         fprintf(f,
 701                                 "%s(%lld%s):%lld",
 702                                 printed ? ", " : "",
 703                                 extent.e_lblk,
 704                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 705                                 "[u]" : "",
 706                                 extent.e_pblk);
 707                 else
 708                         fprintf(f,
 709                                 "%s(%lld-%lld%s):%lld-%lld",
 710                                 printed ? ", " : "",
 711                                 extent.e_lblk,
 712                                 extent.e_lblk + (extent.e_len - 1),
 713                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 714                                         "[u]" : "",
 715                                 extent.e_pblk,
 716                                 extent.e_pblk + (extent.e_len - 1));
 717                 printed = 1;
 718         }
 719         if (printed)
 720                 fprintf(f, "\n");
 721 }
 722
 723 void internal_dump_inode(FILE *out, const char *prefix,
 724                          ext2_ino_t inode_num, struct ext2_inode *inode,
 725                          int do_dump_blocks)
 726 {
 727         const char *i_type;
 728         char frag, fsize;
 729         int os = current_fs->super->s_creator_os;
 730         struct ext2_inode_large *large_inode;
 731         int is_large_inode = 0;
 732
 733         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 734                 is_large_inode = 1;
 735         large_inode = (struct ext2_inode_large *) inode;
 736
 737         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 738         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 739         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 740         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 741         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 742         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 743         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 744         else i_type = "bad type";
 745         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 746         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 747                 prefix, inode->i_mode & 0777, inode->i_flags);
 748         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 749                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 750                         prefix, inode->i_generation, large_inode->i_version_hi,
 751                         inode->osd1.linux1.l_i_version);
 752         } else {
 753                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 754                         inode->i_generation, inode->osd1.linux1.l_i_version);
 755         }
 756         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 757                 prefix, inode_uid(*inode), inode_gid(*inode));
 758         if (LINUX_S_ISREG(inode->i_mode))
 759                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 760         else
 761                 fprintf(out, "%d\n", inode->i_size);
 762         if (os == EXT2_OS_HURD)
 763                 fprintf(out,
 764                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 765                         prefix,
 766                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 767                         inode->osd1.hurd1.h_i_translator);
 768         else
 769                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 770                         prefix,
 771                         inode->i_file_acl | ((long long)
 772                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 773                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 774         if (os == EXT2_OS_LINUX)
 775                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 776                         prefix, inode->i_links_count,
 777                         (((unsigned long long)
 778                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 779                         inode->i_blocks);
 780         else
 781                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 782                         prefix, inode->i_links_count, inode->i_blocks);
 783         switch (os) {
 784             case EXT2_OS_HURD:
 785                 frag = inode->osd2.hurd2.h_i_frag;
 786                 fsize = inode->osd2.hurd2.h_i_fsize;
 787                 break;
 788             default:
 789                 frag = fsize = 0;
 790         }
 791         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 792                 prefix, inode->i_faddr, frag, fsize);
 793         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 794                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 795                         inode->i_ctime, large_inode->i_ctime_extra,
 796                         time_to_string(inode->i_ctime));
 797                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 798                         inode->i_atime, large_inode->i_atime_extra,
 799                         time_to_string(inode->i_atime));
 800                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 801                         inode->i_mtime, large_inode->i_mtime_extra,
 802                         time_to_string(inode->i_mtime));
 803                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 804                         large_inode->i_crtime, large_inode->i_crtime_extra,
 805                         time_to_string(large_inode->i_crtime));
 806         } else {
 807                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 808                         time_to_string(inode->i_ctime));
 809                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 810                         time_to_string(inode->i_atime));
 811                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 812                         time_to_string(inode->i_mtime));
 813         }
 814         if (inode->i_dtime)
 815           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 816                   time_to_string(inode->i_dtime));
 817         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 818                 internal_dump_inode_extra(out, prefix, inode_num,
 819                                           (struct ext2_inode_large *) inode);
 820         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 821                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 822                         (int) inode->i_size, (char *)inode->i_block);
 823         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 824                 int major, minor;
 825                 const char *devnote;
 826
 827                 if (inode->i_block[0]) {
 828                         major = (inode->i_block[0] >> 8) & 255;
 829                         minor = inode->i_block[0] & 255;
 830                         devnote = "";
 831                 } else {
 832                         major = (inode->i_block[1] & 0xfff00) >> 8;
 833                         minor = ((inode->i_block[1] & 0xff) |
 834                                  ((inode->i_block[1] >> 12) & 0xfff00));
 835                         devnote = "(New-style) ";
 836                 }
 837                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 838                         devnote, major, minor, major, minor);
 839         } else if (do_dump_blocks) {
 840                 if (inode->i_flags & EXT4_EXTENTS_FL)
 841                         dump_extents(out, prefix, inode_num,
 842                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 843                 else
 844                         dump_blocks(out, prefix, inode_num);
 845         }
 846 }
 847
 848 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 849 {
 850         FILE    *out;
 851
 852         out = open_pager();
 853         internal_dump_inode(out, "", inode_num, inode, 1);
 854         close_pager(out);
 855 }
 856
 857 void do_stat(int argc, char *argv[])
 858 {
 859         ext2_ino_t      inode;
 860         struct ext2_inode * inode_buf;
 861
 862         if (check_fs_open(argv[0]))
 863                 return;
 864
 865         inode_buf = (struct ext2_inode *)
 866                         malloc(EXT2_INODE_SIZE(current_fs->super));
 867         if (!inode_buf) {
 868                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 869                 return;
 870         }
 871
 872         if (common_inode_args_process(argc, argv, &inode, 0)) {
 873                 free(inode_buf);
 874                 return;
 875         }
 876
 877         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 878                                         EXT2_INODE_SIZE(current_fs->super))) {
 879                 free(inode_buf);
 880                 return;
 881         }
 882
 883         dump_inode(inode, inode_buf);
 884         free(inode_buf);
 885         return;
 886 }
 887
 888 void do_dump_extents(int argc, char **argv)
 889 {
 890         struct ext2_inode inode;
 891         ext2_ino_t      ino;
 892         FILE            *out;
 893         int             c, flags = 0;
 894         int             logical_width;
 895         int             physical_width;
 896
 897         reset_getopt();
 898         while ((c = getopt(argc, argv, "nl")) != EOF) {
 899                 switch (c) {
 900                 case 'n':
 901                         flags |= DUMP_NODE_EXTENTS;
 902                         break;
 903                 case 'l':
 904                         flags |= DUMP_LEAF_EXTENTS;
 905                         break;
 906                 }
 907         }
 908
 909         if (argc != optind + 1) {
 910                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 911                 return;
 912         }
 913
 914         if (flags == 0)
 915                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 916         flags |= DUMP_EXTENT_TABLE;
 917
 918         if (check_fs_open(argv[0]))
 919                 return;
 920
 921         ino = string_to_inode(argv[optind]);
 922         if (ino == 0)
 923                 return;
 924
 925         if (debugfs_read_inode(ino, &inode, argv[0]))
 926                 return;
 927
 928         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 929                 fprintf(stderr, "%s: does not uses extent block maps\n",
 930                         argv[optind]);
 931                 return;
 932         }
 933
 934         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 935                                   current_fs->blocksize) + 1;
 936         if (logical_width < 5)
 937                 logical_width = 5;
 938         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 939         if (physical_width < 5)
 940                 physical_width = 5;
 941
 942         out = open_pager();
 943         dump_extents(out, "", ino, flags, logical_width, physical_width);
 944         close_pager(out);
 945         return;
 946 }
 947
 948 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 949                              blk64_t *blocknr,
 950                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 951                              blk64_t ref_block EXT2FS_ATTR((unused)),
 952                              int ref_offset EXT2FS_ATTR((unused)),
 953                              void *private EXT2FS_ATTR((unused)))
 954 {
 955         printf("%llu ", *blocknr);
 956         return 0;
 957 }
 958
 959 void do_blocks(int argc, char *argv[])
 960 {
 961         ext2_ino_t      inode;
 962
 963         if (check_fs_open(argv[0]))
 964                 return;
 965
 966         if (common_inode_args_process(argc, argv, &inode, 0)) {
 967                 return;
 968         }
 969
 970         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 971                               print_blocks_proc, NULL);
 972         fputc('\n', stdout);
 973         return;
 974 }
 975
 976 void do_chroot(int argc, char *argv[])
 977 {
 978         ext2_ino_t inode;
 979         int retval;
 980
 981         if (common_inode_args_process(argc, argv, &inode, 0))
 982                 return;
 983
 984         retval = ext2fs_check_directory(current_fs, inode);
 985         if (retval)  {
 986                 com_err(argv[1], retval, 0);
 987                 return;
 988         }
 989         root = inode;
 990 }
 991
 992 #ifndef READ_ONLY
 993 void do_clri(int argc, char *argv[])
 994 {
 995         ext2_ino_t inode;
 996         struct ext2_inode inode_buf;
 997
 998         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 999                 return;
1000
1001         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1002                 return;
1003         memset(&inode_buf, 0, sizeof(inode_buf));
1004         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1005                 return;
1006 }
1007
1008 void do_freei(int argc, char *argv[])
1009 {
1010         unsigned int    len = 1;
1011         int             err = 0;
1012         ext2_ino_t      inode;
1013
1014         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1015                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1016                 return;
1017         if (check_fs_read_write(argv[0]))
1018                 return;
1019
1020         inode = string_to_inode(argv[1]);
1021         if (!inode)
1022                 return;
1023
1024         if (argc == 3) {
1025                 len = parse_ulong(argv[2], argv[0], "length", &err);
1026                 if (err)
1027                         return;
1028         }
1029
1030         if (len == 1 &&
1031             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1032                 com_err(argv[0], 0, "Warning: inode already clear");
1033         while (len-- > 0)
1034                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1035         ext2fs_mark_ib_dirty(current_fs);
1036 }
1037
1038 void do_seti(int argc, char *argv[])
1039 {
1040         unsigned int    len = 1;
1041         int             err = 0;
1042         ext2_ino_t      inode;
1043
1044         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1045                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1046                 return;
1047         if (check_fs_read_write(argv[0]))
1048                 return;
1049
1050         inode = string_to_inode(argv[1]);
1051         if (!inode)
1052                 return;
1053
1054         if (argc == 3) {
1055                 len = parse_ulong(argv[2], argv[0], "length", &err);
1056                 if (err)
1057                         return;
1058         }
1059
1060         if ((len == 1) &&
1061             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1062                 com_err(argv[0], 0, "Warning: inode already set");
1063         while (len-- > 0)
1064                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1065         ext2fs_mark_ib_dirty(current_fs);
1066 }
1067 #endif /* READ_ONLY */
1068
1069 void do_testi(int argc, char *argv[])
1070 {
1071         ext2_ino_t inode;
1072
1073         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1074                 return;
1075
1076         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1077                 printf("Inode %u is marked in use\n", inode);
1078         else
1079                 printf("Inode %u is not in use\n", inode);
1080 }
1081
1082 #ifndef READ_ONLY
1083 void do_freeb(int argc, char *argv[])
1084 {
1085         blk64_t block;
1086         blk64_t count = 1;
1087
1088         if (common_block_args_process(argc, argv, &block, &count))
1089                 return;
1090         if (check_fs_read_write(argv[0]))
1091                 return;
1092         while (count-- > 0) {
1093                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1094                         com_err(argv[0], 0, "Warning: block %llu already clear",
1095                                 block);
1096                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1097                 block++;
1098         }
1099         ext2fs_mark_bb_dirty(current_fs);
1100 }
1101
1102 void do_setb(int argc, char *argv[])
1103 {
1104         blk64_t block;
1105         blk64_t count = 1;
1106
1107         if (common_block_args_process(argc, argv, &block, &count))
1108                 return;
1109         if (check_fs_read_write(argv[0]))
1110                 return;
1111         while (count-- > 0) {
1112                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1113                         com_err(argv[0], 0, "Warning: block %llu already set",
1114                                 block);
1115                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1116                 block++;
1117         }
1118         ext2fs_mark_bb_dirty(current_fs);
1119 }
1120 #endif /* READ_ONLY */
1121
1122 void do_testb(int argc, char *argv[])
1123 {
1124         blk64_t block;
1125         blk64_t count = 1;
1126
1127         if (common_block_args_process(argc, argv, &block, &count))
1128                 return;
1129         while (count-- > 0) {
1130                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1131                         printf("Block %llu marked in use\n", block);
1132                 else
1133                         printf("Block %llu not in use\n", block);
1134                 block++;
1135         }
1136 }
1137
1138 #ifndef READ_ONLY
1139 static void modify_u8(char *com, const char *prompt,
1140                       const char *format, __u8 *val)
1141 {
1142         char buf[200];
1143         unsigned long v;
1144         char *tmp;
1145
1146         sprintf(buf, format, *val);
1147         printf("%30s    [%s] ", prompt, buf);
1148         if (!fgets(buf, sizeof(buf), stdin))
1149                 return;
1150         if (buf[strlen (buf) - 1] == '\n')
1151                 buf[strlen (buf) - 1] = '\0';
1152         if (!buf[0])
1153                 return;
1154         v = strtoul(buf, &tmp, 0);
1155         if (*tmp)
1156                 com_err(com, 0, "Bad value - %s", buf);
1157         else
1158                 *val = v;
1159 }
1160
1161 static void modify_u16(char *com, const char *prompt,
1162                        const char *format, __u16 *val)
1163 {
1164         char buf[200];
1165         unsigned long v;
1166         char *tmp;
1167
1168         sprintf(buf, format, *val);
1169         printf("%30s    [%s] ", prompt, buf);
1170         if (!fgets(buf, sizeof(buf), stdin))
1171                 return;
1172         if (buf[strlen (buf) - 1] == '\n')
1173                 buf[strlen (buf) - 1] = '\0';
1174         if (!buf[0])
1175                 return;
1176         v = strtoul(buf, &tmp, 0);
1177         if (*tmp)
1178                 com_err(com, 0, "Bad value - %s", buf);
1179         else
1180                 *val = v;
1181 }
1182
1183 static void modify_u32(char *com, const char *prompt,
1184                        const char *format, __u32 *val)
1185 {
1186         char buf[200];
1187         unsigned long v;
1188         char *tmp;
1189
1190         sprintf(buf, format, *val);
1191         printf("%30s    [%s] ", prompt, buf);
1192         if (!fgets(buf, sizeof(buf), stdin))
1193                 return;
1194         if (buf[strlen (buf) - 1] == '\n')
1195                 buf[strlen (buf) - 1] = '\0';
1196         if (!buf[0])
1197                 return;
1198         v = strtoul(buf, &tmp, 0);
1199         if (*tmp)
1200                 com_err(com, 0, "Bad value - %s", buf);
1201         else
1202                 *val = v;
1203 }
1204
1205
1206 void do_modify_inode(int argc, char *argv[])
1207 {
1208         struct ext2_inode inode;
1209         ext2_ino_t      inode_num;
1210         int             i;
1211         unsigned char   *frag, *fsize;
1212         char            buf[80];
1213         int             os;
1214         const char      *hex_format = "0x%x";
1215         const char      *octal_format = "0%o";
1216         const char      *decimal_format = "%d";
1217         const char      *unsignedlong_format = "%lu";
1218
1219         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1220                 return;
1221
1222         os = current_fs->super->s_creator_os;
1223
1224         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1225                 return;
1226
1227         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1228         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1229         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1230         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1231         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1232         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1233         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1234         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1235         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1236         if (os == EXT2_OS_LINUX)
1237                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1238                            &inode.osd2.linux2.l_i_blocks_hi);
1239         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1240         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1241         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1242 #if 0
1243         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1244 #endif
1245         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1246         if (LINUX_S_ISDIR(inode.i_mode))
1247                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1248         else
1249                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1250
1251         if (os == EXT2_OS_HURD)
1252                 modify_u32(argv[0], "Translator Block",
1253                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1254
1255         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1256         switch (os) {
1257             case EXT2_OS_HURD:
1258                 frag = &inode.osd2.hurd2.h_i_frag;
1259                 fsize = &inode.osd2.hurd2.h_i_fsize;
1260                 break;
1261             default:
1262                 frag = fsize = 0;
1263         }
1264         if (frag)
1265                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1266         if (fsize)
1267                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1268
1269         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1270                 sprintf(buf, "Direct Block #%d", i);
1271                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1272         }
1273         modify_u32(argv[0], "Indirect Block", decimal_format,
1274                     &inode.i_block[EXT2_IND_BLOCK]);
1275         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1276                     &inode.i_block[EXT2_DIND_BLOCK]);
1277         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1278                     &inode.i_block[EXT2_TIND_BLOCK]);
1279         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1280                 return;
1281 }
1282 #endif /* READ_ONLY */
1283
1284 void do_change_working_dir(int argc, char *argv[])
1285 {
1286         ext2_ino_t      inode;
1287         int             retval;
1288
1289         if (common_inode_args_process(argc, argv, &inode, 0))
1290                 return;
1291
1292         retval = ext2fs_check_directory(current_fs, inode);
1293         if (retval) {
1294                 com_err(argv[1], retval, 0);
1295                 return;
1296         }
1297         cwd = inode;
1298         return;
1299 }
1300
1301 void do_print_working_directory(int argc, char *argv[])
1302 {
1303         int     retval;
1304         char    *pathname = NULL;
1305
1306         if (common_args_process(argc, argv, 1, 1,
1307                                 "print_working_directory", "", 0))
1308                 return;
1309
1310         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1311         if (retval) {
1312                 com_err(argv[0], retval,
1313                         "while trying to get pathname of cwd");
1314         }
1315         printf("[pwd]   INODE: %6u  PATH: %s\n",
1316                cwd, pathname ? pathname : "NULL");
1317         if (pathname) {
1318                 free(pathname);
1319                 pathname = NULL;
1320         }
1321         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1322         if (retval) {
1323                 com_err(argv[0], retval,
1324                         "while trying to get pathname of root");
1325         }
1326         printf("[root]  INODE: %6u  PATH: %s\n",
1327                root, pathname ? pathname : "NULL");
1328         if (pathname) {
1329                 free(pathname);
1330                 pathname = NULL;
1331         }
1332         return;
1333 }
1334
1335 #ifndef READ_ONLY
1336 static void make_link(char *sourcename, char *destname)
1337 {
1338         ext2_ino_t      ino;
1339         struct ext2_inode inode;
1340         int             retval;
1341         ext2_ino_t      dir;
1342         char            *dest, *cp, *base_name;
1343
1344         /*
1345          * Get the source inode
1346          */
1347         ino = string_to_inode(sourcename);
1348         if (!ino)
1349                 return;
1350         base_name = strrchr(sourcename, '/');
1351         if (base_name)
1352                 base_name++;
1353         else
1354                 base_name = sourcename;
1355         /*
1356          * Figure out the destination.  First see if it exists and is
1357          * a directory.
1358          */
1359         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1360                 dest = base_name;
1361         else {
1362                 /*
1363                  * OK, it doesn't exist.  See if it is
1364                  * '<dir>/basename' or 'basename'
1365                  */
1366                 cp = strrchr(destname, '/');
1367                 if (cp) {
1368                         *cp = 0;
1369                         dir = string_to_inode(destname);
1370                         if (!dir)
1371                                 return;
1372                         dest = cp+1;
1373                 } else {
1374                         dir = cwd;
1375                         dest = destname;
1376                 }
1377         }
1378
1379         if (debugfs_read_inode(ino, &inode, sourcename))
1380                 return;
1381
1382         retval = ext2fs_link(current_fs, dir, dest, ino,
1383                              ext2_file_type(inode.i_mode));
1384         if (retval)
1385                 com_err("make_link", retval, 0);
1386         return;
1387 }
1388
1389
1390 void do_link(int argc, char *argv[])
1391 {
1392         if (common_args_process(argc, argv, 3, 3, "link",
1393                                 "<source file> <dest_name>", CHECK_FS_RW))
1394                 return;
1395
1396         make_link(argv[1], argv[2]);
1397 }
1398
1399 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1400                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1401                             blk64_t ref_block EXT2FS_ATTR((unused)),
1402                             int ref_offset EXT2FS_ATTR((unused)),
1403                             void *private EXT2FS_ATTR((unused)))
1404 {
1405         blk64_t block;
1406
1407         block = *blocknr;
1408         ext2fs_block_alloc_stats2(fs, block, +1);
1409         return 0;
1410 }
1411
1412 void do_undel(int argc, char *argv[])
1413 {
1414         ext2_ino_t      ino;
1415         struct ext2_inode inode;
1416
1417         if (common_args_process(argc, argv, 2, 3, "undelete",
1418                                 "<inode_num> [dest_name]",
1419                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1420                 return;
1421
1422         ino = string_to_inode(argv[1]);
1423         if (!ino)
1424                 return;
1425
1426         if (debugfs_read_inode(ino, &inode, argv[1]))
1427                 return;
1428
1429         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1430                 com_err(argv[1], 0, "Inode is not marked as deleted");
1431                 return;
1432         }
1433
1434         /*
1435          * XXX this function doesn't handle changing the links count on the
1436          * parent directory when undeleting a directory.
1437          */
1438         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1439         inode.i_dtime = 0;
1440
1441         if (debugfs_write_inode(ino, &inode, argv[0]))
1442                 return;
1443
1444         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1445                               mark_blocks_proc, NULL);
1446
1447         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1448
1449         if (argc > 2)
1450                 make_link(argv[1], argv[2]);
1451 }
1452
1453 static void unlink_file_by_name(char *filename)
1454 {
1455         int             retval;
1456         ext2_ino_t      dir;
1457         char            *base_name;
1458
1459         base_name = strrchr(filename, '/');
1460         if (base_name) {
1461                 *base_name++ = '\0';
1462                 dir = string_to_inode(filename);
1463                 if (!dir)
1464                         return;
1465         } else {
1466                 dir = cwd;
1467                 base_name = filename;
1468         }
1469         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1470         if (retval)
1471                 com_err("unlink_file_by_name", retval, 0);
1472         return;
1473 }
1474
1475 void do_unlink(int argc, char *argv[])
1476 {
1477         if (common_args_process(argc, argv, 2, 2, "link",
1478                                 "<pathname>", CHECK_FS_RW))
1479                 return;
1480
1481         unlink_file_by_name(argv[1]);
1482 }
1483 #endif /* READ_ONLY */
1484
1485 void do_find_free_block(int argc, char *argv[])
1486 {
1487         blk64_t free_blk, goal, first_free = 0;
1488         int             count;
1489         errcode_t       retval;
1490         char            *tmp;
1491
1492         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1493                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1494                 return;
1495         }
1496         if (check_fs_open(argv[0]))
1497                 return;
1498
1499         if (argc > 1) {
1500                 count = strtol(argv[1],&tmp,0);
1501                 if (*tmp) {
1502                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1503                         return;
1504                 }
1505         } else
1506                 count = 1;
1507
1508         if (argc > 2) {
1509                 goal = strtol(argv[2], &tmp, 0);
1510                 if (*tmp) {
1511                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1512                         return;
1513                 }
1514         }
1515         else
1516                 goal = current_fs->super->s_first_data_block;
1517
1518         printf("Free blocks found: ");
1519         free_blk = goal - 1;
1520         while (count-- > 0) {
1521                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1522                                            &free_blk);
1523                 if (first_free) {
1524                         if (first_free == free_blk)
1525                                 break;
1526                 } else
1527                         first_free = free_blk;
1528                 if (retval) {
1529                         com_err("ext2fs_new_block", retval, 0);
1530                         return;
1531                 } else
1532                         printf("%llu ", free_blk);
1533         }
1534         printf("\n");
1535 }
1536
1537 void do_find_free_inode(int argc, char *argv[])
1538 {
1539         ext2_ino_t      free_inode, dir;
1540         int             mode;
1541         int             retval;
1542         char            *tmp;
1543
1544         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1545                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1546                 return;
1547         }
1548         if (check_fs_open(argv[0]))
1549                 return;
1550
1551         if (argc > 1) {
1552                 dir = strtol(argv[1], &tmp, 0);
1553                 if (*tmp) {
1554                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1555                         return;
1556                 }
1557         }
1558         else
1559                 dir = root;
1560         if (argc > 2) {
1561                 mode = strtol(argv[2], &tmp, 0);
1562                 if (*tmp) {
1563                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1564                         return;
1565                 }
1566         } else
1567                 mode = 010755;
1568
1569         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1570         if (retval)
1571                 com_err("ext2fs_new_inode", retval, 0);
1572         else
1573                 printf("Free inode found: %u\n", free_inode);
1574 }
1575
1576 #ifndef READ_ONLY
1577 static errcode_t copy_file(int fd, ext2_ino_t newfile, int bufsize, int make_holes)
1578 {
1579         ext2_file_t     e2_file;
1580         errcode_t       retval;
1581         int             got;
1582         unsigned int    written;
1583         char            *buf;
1584         char            *ptr;
1585         char            *zero_buf;
1586         int             cmp;
1587
1588         retval = ext2fs_file_open(current_fs, newfile,
1589                                   EXT2_FILE_WRITE, &e2_file);
1590         if (retval)
1591                 return retval;
1592
1593         if (!(buf = (char *) malloc(bufsize))){
1594                 com_err("copy_file", errno, "can't allocate buffer\n");
1595                 return;
1596         }
1597
1598         /* This is used for checking whether the whole block is zero */
1599         retval = ext2fs_get_memzero(bufsize, &zero_buf);
1600         if (retval) {
1601                 com_err("copy_file", retval, "can't allocate buffer\n");
1602                 free(buf);
1603                 return retval;
1604         }
1605
1606         while (1) {
1607                 got = read(fd, buf, bufsize);
1608                 if (got == 0)
1609                         break;
1610                 if (got < 0) {
1611                         retval = errno;
1612                         goto fail;
1613                 }
1614                 ptr = buf;
1615
1616                 /* Sparse copy */
1617                 if (make_holes) {
1618                         /* Check whether all is zero */
1619                         cmp = memcmp(ptr, zero_buf, got);
1620                         if (cmp == 0) {
1621                                  /* The whole block is zero, make a hole */
1622                                 retval = ext2fs_file_lseek(e2_file, got, EXT2_SEEK_CUR, NULL);
1623                                 if (retval)
1624                                         goto fail;
1625                                 got = 0;
1626                         }
1627                 }
1628
1629                 /* Normal copy */
1630                 while (got > 0) {
1631                         retval = ext2fs_file_write(e2_file, ptr,
1632                                                    got, &written);
1633                         if (retval)
1634                                 goto fail;
1635
1636                         got -= written;
1637                         ptr += written;
1638                 }
1639         }
1640         free(buf);
1641         ext2fs_free_mem(&zero_buf);
1642         retval = ext2fs_file_close(e2_file);
1643         return retval;
1644
1645 fail:
1646         free(buf);
1647         ext2fs_free_mem(&zero_buf);
1648         (void) ext2fs_file_close(e2_file);
1649         return retval;
1650 }
1651
1652
1653 void do_write(int argc, char *argv[])
1654 {
1655         int             fd;
1656         struct stat     statbuf;
1657         ext2_ino_t      newfile;
1658         errcode_t       retval;
1659         struct ext2_inode inode;
1660         int             bufsize = IO_BUFSIZE;
1661         int             make_holes = 0;
1662
1663         if (common_args_process(argc, argv, 3, 3, "write",
1664                                 "<native file> <new file>", CHECK_FS_RW))
1665                 return;
1666
1667         fd = open(argv[1], O_RDONLY);
1668         if (fd < 0) {
1669                 com_err(argv[1], errno, 0);
1670                 return;
1671         }
1672         if (fstat(fd, &statbuf) < 0) {
1673                 com_err(argv[1], errno, 0);
1674                 close(fd);
1675                 return;
1676         }
1677
1678         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1679         if (retval == 0) {
1680                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1681                 close(fd);
1682                 return;
1683         }
1684
1685         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1686         if (retval) {
1687                 com_err(argv[0], retval, 0);
1688                 close(fd);
1689                 return;
1690         }
1691         printf("Allocated inode: %u\n", newfile);
1692         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1693                              EXT2_FT_REG_FILE);
1694         if (retval == EXT2_ET_DIR_NO_SPACE) {
1695                 retval = ext2fs_expand_dir(current_fs, cwd);
1696                 if (retval) {
1697                         com_err(argv[0], retval, "while expanding directory");
1698                         close(fd);
1699                         return;
1700                 }
1701                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1702                                      EXT2_FT_REG_FILE);
1703         }
1704         if (retval) {
1705                 com_err(argv[2], retval, 0);
1706                 close(fd);
1707                 return;
1708         }
1709         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1710                 com_err(argv[0], 0, "Warning: inode already set");
1711         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1712         memset(&inode, 0, sizeof(inode));
1713         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1714         inode.i_atime = inode.i_ctime = inode.i_mtime =
1715                 current_fs->now ? current_fs->now : time(0);
1716         inode.i_links_count = 1;
1717         inode.i_size = statbuf.st_size;
1718         if (current_fs->super->s_feature_incompat &
1719             EXT3_FEATURE_INCOMPAT_EXTENTS) {
1720                 int i;
1721                 struct ext3_extent_header *eh;
1722
1723                 eh = (struct ext3_extent_header *) &inode.i_block[0];
1724                 eh->eh_depth = 0;
1725                 eh->eh_entries = 0;
1726                 eh->eh_magic = EXT3_EXT_MAGIC;
1727                 i = (sizeof(inode.i_block) - sizeof(*eh)) /
1728                         sizeof(struct ext3_extent);
1729                 eh->eh_max = ext2fs_cpu_to_le16(i);
1730                 inode.i_flags |= EXT4_EXTENTS_FL;
1731         }
1732         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1733                 close(fd);
1734                 return;
1735         }
1736         if (LINUX_S_ISREG(inode.i_mode)) {
1737                 if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
1738                         make_holes = 1;
1739                         /*
1740                          * Use I/O blocksize as buffer size when
1741                          * copying sparse files.
1742                          */
1743                         bufsize = statbuf.st_blksize;
1744                 }
1745                 retval = copy_file(fd, newfile, bufsize, make_holes);
1746                 if (retval)
1747                         com_err("copy_file", retval, 0);
1748         }
1749         close(fd);
1750 }
1751
1752 void do_mknod(int argc, char *argv[])
1753 {
1754         unsigned long   mode, major, minor;
1755         ext2_ino_t      newfile;
1756         errcode_t       retval;
1757         struct ext2_inode inode;
1758         int             filetype, nr;
1759
1760         if (check_fs_open(argv[0]))
1761                 return;
1762         if (argc < 3 || argv[2][1]) {
1763         usage:
1764                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1765                 return;
1766         }
1767         mode = minor = major = 0;
1768         switch (argv[2][0]) {
1769                 case 'p':
1770                         mode = LINUX_S_IFIFO;
1771                         filetype = EXT2_FT_FIFO;
1772                         nr = 3;
1773                         break;
1774                 case 'c':
1775                         mode = LINUX_S_IFCHR;
1776                         filetype = EXT2_FT_CHRDEV;
1777                         nr = 5;
1778                         break;
1779                 case 'b':
1780                         mode = LINUX_S_IFBLK;
1781                         filetype = EXT2_FT_BLKDEV;
1782                         nr = 5;
1783                         break;
1784                 default:
1785                         filetype = 0;
1786                         nr = 0;
1787         }
1788         if (nr == 5) {
1789                 major = strtoul(argv[3], argv+3, 0);
1790                 minor = strtoul(argv[4], argv+4, 0);
1791                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1792                         nr = 0;
1793         }
1794         if (argc != nr)
1795                 goto usage;
1796         if (check_fs_read_write(argv[0]))
1797                 return;
1798         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1799         if (retval) {
1800                 com_err(argv[0], retval, 0);
1801                 return;
1802         }
1803         printf("Allocated inode: %u\n", newfile);
1804         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1805         if (retval == EXT2_ET_DIR_NO_SPACE) {
1806                 retval = ext2fs_expand_dir(current_fs, cwd);
1807                 if (retval) {
1808                         com_err(argv[0], retval, "while expanding directory");
1809                         return;
1810                 }
1811                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1812                                      filetype);
1813         }
1814         if (retval) {
1815                 com_err(argv[1], retval, 0);
1816                 return;
1817         }
1818         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1819                 com_err(argv[0], 0, "Warning: inode already set");
1820         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1821         memset(&inode, 0, sizeof(inode));
1822         inode.i_mode = mode;
1823         inode.i_atime = inode.i_ctime = inode.i_mtime =
1824                 current_fs->now ? current_fs->now : time(0);
1825         if ((major < 256) && (minor < 256)) {
1826                 inode.i_block[0] = major*256+minor;
1827                 inode.i_block[1] = 0;
1828         } else {
1829                 inode.i_block[0] = 0;
1830                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1831         }
1832         inode.i_links_count = 1;
1833         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1834                 return;
1835 }
1836
1837 void do_mkdir(int argc, char *argv[])
1838 {
1839         char    *cp;
1840         ext2_ino_t      parent;
1841         char    *name;
1842         errcode_t retval;
1843
1844         if (common_args_process(argc, argv, 2, 2, "mkdir",
1845                                 "<filename>", CHECK_FS_RW))
1846                 return;
1847
1848         cp = strrchr(argv[1], '/');
1849         if (cp) {
1850                 *cp = 0;
1851                 parent = string_to_inode(argv[1]);
1852                 if (!parent) {
1853                         com_err(argv[1], ENOENT, 0);
1854                         return;
1855                 }
1856                 name = cp+1;
1857         } else {
1858                 parent = cwd;
1859                 name = argv[1];
1860         }
1861
1862 try_again:
1863         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1864         if (retval == EXT2_ET_DIR_NO_SPACE) {
1865                 retval = ext2fs_expand_dir(current_fs, parent);
1866                 if (retval) {
1867                         com_err(argv[0], retval, "while expanding directory");
1868                         return;
1869                 }
1870                 goto try_again;
1871         }
1872         if (retval) {
1873                 com_err("ext2fs_mkdir", retval, 0);
1874                 return;
1875         }
1876
1877 }
1878
1879 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1880                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1881                                blk64_t ref_block EXT2FS_ATTR((unused)),
1882                                int ref_offset EXT2FS_ATTR((unused)),
1883                                void *private EXT2FS_ATTR((unused)))
1884 {
1885         blk64_t block;
1886
1887         block = *blocknr;
1888         ext2fs_block_alloc_stats2(fs, block, -1);
1889         return 0;
1890 }
1891
1892 static void kill_file_by_inode(ext2_ino_t inode)
1893 {
1894         struct ext2_inode inode_buf;
1895
1896         if (debugfs_read_inode(inode, &inode_buf, 0))
1897                 return;
1898         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1899         if (debugfs_write_inode(inode, &inode_buf, 0))
1900                 return;
1901         if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf))
1902                 return;
1903
1904         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1905                               release_blocks_proc, NULL);
1906         printf("\n");
1907         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1908                                   LINUX_S_ISDIR(inode_buf.i_mode));
1909 }
1910
1911
1912 void do_kill_file(int argc, char *argv[])
1913 {
1914         ext2_ino_t inode_num;
1915
1916         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1917                 return;
1918
1919         kill_file_by_inode(inode_num);
1920 }
1921
1922 void do_rm(int argc, char *argv[])
1923 {
1924         int retval;
1925         ext2_ino_t inode_num;
1926         struct ext2_inode inode;
1927
1928         if (common_args_process(argc, argv, 2, 2, "rm",
1929                                 "<filename>", CHECK_FS_RW))
1930                 return;
1931
1932         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1933         if (retval) {
1934                 com_err(argv[0], retval, "while trying to resolve filename");
1935                 return;
1936         }
1937
1938         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1939                 return;
1940
1941         if (LINUX_S_ISDIR(inode.i_mode)) {
1942                 com_err(argv[0], 0, "file is a directory");
1943                 return;
1944         }
1945
1946         --inode.i_links_count;
1947         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1948                 return;
1949
1950         unlink_file_by_name(argv[1]);
1951         if (inode.i_links_count == 0)
1952                 kill_file_by_inode(inode_num);
1953 }
1954
1955 struct rd_struct {
1956         ext2_ino_t      parent;
1957         int             empty;
1958 };
1959
1960 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1961                       int       entry EXT2FS_ATTR((unused)),
1962                       struct ext2_dir_entry *dirent,
1963                       int       offset EXT2FS_ATTR((unused)),
1964                       int       blocksize EXT2FS_ATTR((unused)),
1965                       char      *buf EXT2FS_ATTR((unused)),
1966                       void      *private)
1967 {
1968         struct rd_struct *rds = (struct rd_struct *) private;
1969
1970         if (dirent->inode == 0)
1971                 return 0;
1972         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1973                 return 0;
1974         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1975             (dirent->name[1] == '.')) {
1976                 rds->parent = dirent->inode;
1977                 return 0;
1978         }
1979         rds->empty = 0;
1980         return 0;
1981 }
1982
1983 void do_rmdir(int argc, char *argv[])
1984 {
1985         int retval;
1986         ext2_ino_t inode_num;
1987         struct ext2_inode inode;
1988         struct rd_struct rds;
1989
1990         if (common_args_process(argc, argv, 2, 2, "rmdir",
1991                                 "<filename>", CHECK_FS_RW))
1992                 return;
1993
1994         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1995         if (retval) {
1996                 com_err(argv[0], retval, "while trying to resolve filename");
1997                 return;
1998         }
1999
2000         if (debugfs_read_inode(inode_num, &inode, argv[0]))
2001                 return;
2002
2003         if (!LINUX_S_ISDIR(inode.i_mode)) {
2004                 com_err(argv[0], 0, "file is not a directory");
2005                 return;
2006         }
2007
2008         rds.parent = 0;
2009         rds.empty = 1;
2010
2011         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
2012                                     0, rmdir_proc, &rds);
2013         if (retval) {
2014                 com_err(argv[0], retval, "while iterating over directory");
2015                 return;
2016         }
2017         if (rds.empty == 0) {
2018                 com_err(argv[0], 0, "directory not empty");
2019                 return;
2020         }
2021
2022         inode.i_links_count = 0;
2023         if (debugfs_write_inode(inode_num, &inode, argv[0]))
2024                 return;
2025
2026         unlink_file_by_name(argv[1]);
2027         kill_file_by_inode(inode_num);
2028
2029         if (rds.parent) {
2030                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
2031                         return;
2032                 if (inode.i_links_count > 1)
2033                         inode.i_links_count--;
2034                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
2035                         return;
2036         }
2037 }
2038 #endif /* READ_ONLY */
2039
2040 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
2041                             char *argv[] EXT2FS_ATTR((unused)))
2042 {
2043         if (current_fs)
2044                 printf("Open mode: read-%s\n",
2045                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
2046         printf("Filesystem in use: %s\n",
2047                current_fs ? current_fs->device_name : "--none--");
2048 }
2049
2050 #ifndef READ_ONLY
2051 void do_expand_dir(int argc, char *argv[])
2052 {
2053         ext2_ino_t inode;
2054         int retval;
2055
2056         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
2057                 return;
2058
2059         retval = ext2fs_expand_dir(current_fs, inode);
2060         if (retval)
2061                 com_err("ext2fs_expand_dir", retval, 0);
2062         return;
2063 }
2064
2065 void do_features(int argc, char *argv[])
2066 {
2067         int     i;
2068
2069         if (check_fs_open(argv[0]))
2070                 return;
2071
2072         if ((argc != 1) && check_fs_read_write(argv[0]))
2073                 return;
2074         for (i=1; i < argc; i++) {
2075                 if (e2p_edit_feature(argv[i],
2076                                      &current_fs->super->s_feature_compat, 0))
2077                         com_err(argv[0], 0, "Unknown feature: %s\n",
2078                                 argv[i]);
2079                 else
2080                         ext2fs_mark_super_dirty(current_fs);
2081         }
2082         print_features(current_fs->super, stdout);
2083 }
2084 #endif /* READ_ONLY */
2085
2086 void do_bmap(int argc, char *argv[])
2087 {
2088         ext2_ino_t      ino;
2089         blk64_t         blk, pblk;
2090         int             err;
2091         errcode_t       errcode;
2092
2093         if (common_args_process(argc, argv, 3, 3, argv[0],
2094                                 "<file> logical_blk", 0))
2095                 return;
2096
2097         ino = string_to_inode(argv[1]);
2098         if (!ino)
2099                 return;
2100         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
2101
2102         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
2103         if (errcode) {
2104                 com_err("argv[0]", errcode,
2105                         "while mapping logical block %llu\n", blk);
2106                 return;
2107         }
2108         printf("%llu\n", pblk);
2109 }
2110
2111 void do_imap(int argc, char *argv[])
2112 {
2113         ext2_ino_t      ino;
2114         unsigned long   group, block, block_nr, offset;
2115
2116         if (common_args_process(argc, argv, 2, 2, argv[0],
2117                                 "<file>", 0))
2118                 return;
2119         ino = string_to_inode(argv[1]);
2120         if (!ino)
2121                 return;
2122
2123         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2124         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2125                 EXT2_INODE_SIZE(current_fs->super);
2126         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2127         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2128                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2129                         group);
2130                 return;
2131         }
2132         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2133                 block;
2134         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2135
2136         printf("Inode %d is part of block group %lu\n"
2137                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2138                block_nr, offset);
2139
2140 }
2141
2142 #ifndef READ_ONLY
2143 void do_set_current_time(int argc, char *argv[])
2144 {
2145         time_t now;
2146
2147         if (common_args_process(argc, argv, 2, 2, argv[0],
2148                                 "<time>", 0))
2149                 return;
2150
2151         now = string_to_time(argv[1]);
2152         if (now == ((time_t) -1)) {
2153                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2154                         argv[1]);
2155                 return;
2156
2157         } else {
2158                 printf("Setting current time to %s\n", time_to_string(now));
2159                 current_fs->now = now;
2160         }
2161 }
2162 #endif /* READ_ONLY */
2163
2164 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2165 {
2166         int compat, bit, ret;
2167         unsigned int feature_mask;
2168
2169         if (name) {
2170                 if (feature_type == E2P_FS_FEATURE)
2171                         ret = e2p_string2feature(name, &compat, &feature_mask);
2172                 else
2173                         ret = e2p_jrnl_string2feature(name, &compat,
2174                                                       &feature_mask);
2175                 if (ret)
2176                         return ret;
2177
2178                 if (!(supp[compat] & feature_mask))
2179                         return 1;
2180         } else {
2181                 for (compat = 0; compat < 3; compat++) {
2182                         for (bit = 0, feature_mask = 1; bit < 32;
2183                              bit++, feature_mask <<= 1) {
2184                                 if (supp[compat] & feature_mask) {
2185                                         if (feature_type == E2P_FS_FEATURE)
2186                                                 fprintf(stdout, " %s",
2187                                                 e2p_feature2string(compat,
2188                                                 feature_mask));
2189                                         else
2190                                                 fprintf(stdout, " %s",
2191                                                 e2p_jrnl_feature2string(compat,
2192                                                 feature_mask));
2193                                 }
2194                         }
2195                 }
2196                 fprintf(stdout, "\n");
2197         }
2198
2199         return 0;
2200 }
2201
2202 void do_supported_features(int argc, char *argv[])
2203 {
2204         int     ret;
2205         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2206                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2207                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2208         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2209                                  JFS_KNOWN_INCOMPAT_FEATURES,
2210                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2211
2212         if (argc > 1) {
2213                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2214                 if (ret) {
2215                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2216                                                 argv[1]);
2217                 }
2218                 if (ret)
2219                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2220                 else
2221                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2222         } else {
2223                 fprintf(stdout, "Supported features:");
2224                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2225                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2226         }
2227 }
2228
2229 #ifndef READ_ONLY
2230 void do_punch(int argc, char *argv[])
2231 {
2232         ext2_ino_t      ino;
2233         blk64_t         start, end;
2234         int             err;
2235         errcode_t       errcode;
2236
2237         if (common_args_process(argc, argv, 3, 4, argv[0],
2238                                 "<file> start_blk [end_blk]",
2239                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2240                 return;
2241
2242         ino = string_to_inode(argv[1]);
2243         if (!ino)
2244                 return;
2245         start = parse_ulong(argv[2], argv[0], "logical_block", &err);
2246         if (argc == 4)
2247                 end = parse_ulong(argv[3], argv[0], "logical_block", &err);
2248         else
2249                 end = ~0;
2250
2251         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2252
2253         if (errcode) {
2254                 com_err(argv[0], errcode,
2255                         "while truncating inode %u from %llu to %llu\n", ino,
2256                         (unsigned long long) start, (unsigned long long) end);
2257                 return;
2258         }
2259 }
2260 #endif /* READ_ONLY */
2261
2262 void do_symlink(int argc, char *argv[])
2263 {
2264         char            *cp;
2265         ext2_ino_t      parent;
2266         char            *name, *target;
2267         errcode_t       retval;
2268
2269         if (common_args_process(argc, argv, 3, 3, "symlink",
2270                                 "<filename> <target>", CHECK_FS_RW))
2271                 return;
2272
2273         cp = strrchr(argv[1], '/');
2274         if (cp) {
2275                 *cp = 0;
2276                 parent = string_to_inode(argv[1]);
2277                 if (!parent) {
2278                         com_err(argv[1], ENOENT, 0);
2279                         return;
2280                 }
2281                 name = cp+1;
2282         } else {
2283                 parent = cwd;
2284                 name = argv[1];
2285         }
2286         target = argv[2];
2287
2288 try_again:
2289         retval = ext2fs_symlink(current_fs, parent, 0, name, target);
2290         if (retval == EXT2_ET_DIR_NO_SPACE) {
2291                 retval = ext2fs_expand_dir(current_fs, parent);
2292                 if (retval) {
2293                         com_err(argv[0], retval, "while expanding directory");
2294                         return;
2295                 }
2296                 goto try_again;
2297         }
2298         if (retval) {
2299                 com_err("ext2fs_symlink", retval, 0);
2300                 return;
2301         }
2302
2303 }
2304
2305 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2306 {
2307         struct ext2_super_block *sb;
2308         struct mmp_struct *mmp_s;
2309         time_t t;
2310         errcode_t retval = 0;
2311
2312         if (check_fs_open(argv[0]))
2313                 return;
2314
2315         sb  = current_fs->super;
2316
2317         if (current_fs->mmp_buf == NULL) {
2318                 retval = ext2fs_get_mem(current_fs->blocksize,
2319                                         &current_fs->mmp_buf);
2320                 if (retval) {
2321                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2322                         return;
2323                 }
2324         }
2325
2326         mmp_s = current_fs->mmp_buf;
2327
2328         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2329                                  current_fs->mmp_buf);
2330         if (retval) {
2331                 com_err(argv[0], retval, "reading MMP block.\n");
2332                 return;
2333         }
2334
2335         t = mmp_s->mmp_time;
2336         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2337         fprintf(stdout, "update_interval: %d\n",
2338                 current_fs->super->s_mmp_update_interval);
2339         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2340         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2341         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2342         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2343         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2344         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2345 }
2346
2347 static int source_file(const char *cmd_file, int ss_idx)
2348 {
2349         FILE            *f;
2350         char            buf[BUFSIZ];
2351         char            *cp;
2352         int             exit_status = 0;
2353         int             retval;
2354
2355         if (strcmp(cmd_file, "-") == 0)
2356                 f = stdin;
2357         else {
2358                 f = fopen(cmd_file, "r");
2359                 if (!f) {
2360                         perror(cmd_file);
2361                         exit(1);
2362                 }
2363         }
2364         fflush(stdout);
2365         fflush(stderr);
2366         setbuf(stdout, NULL);
2367         setbuf(stderr, NULL);
2368         while (!feof(f)) {
2369                 if (fgets(buf, sizeof(buf), f) == NULL)
2370                         break;
2371                 cp = strchr(buf, '\n');
2372                 if (cp)
2373                         *cp = 0;
2374                 cp = strchr(buf, '\r');
2375                 if (cp)
2376                         *cp = 0;
2377                 printf("debugfs: %s\n", buf);
2378                 retval = ss_execute_line(ss_idx, buf);
2379                 if (retval) {
2380                         ss_perror(ss_idx, retval, buf);
2381                         exit_status++;
2382                 }
2383         }
2384         if (f != stdin)
2385                 fclose(f);
2386         return exit_status;
2387 }
2388
2389 int main(int argc, char **argv)
2390 {
2391         int             retval;
2392         const char      *usage =
2393                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2394                 "[-R request] [-V] ["
2395 #ifndef READ_ONLY
2396                 "[-w] "
2397 #endif
2398                 "[-c] device]";
2399         int             c;
2400         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2401         char            *request = 0;
2402         int             exit_status = 0;
2403         char            *cmd_file = 0;
2404         blk64_t         superblock = 0;
2405         blk64_t         blocksize = 0;
2406         int             catastrophic = 0;
2407         char            *data_filename = 0;
2408 #ifdef READ_ONLY
2409         const char      *opt_string = "icR:f:b:s:Vd:D";
2410 #else
2411         const char      *opt_string = "iwcR:f:b:s:Vd:D";
2412 #endif
2413
2414         if (debug_prog_name == 0)
2415 #ifdef READ_ONLY
2416                 debug_prog_name = "rdebugfs";
2417 #else
2418                 debug_prog_name = "debugfs";
2419 #endif
2420         add_error_table(&et_ext2_error_table);
2421         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2422                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2423
2424         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2425                 switch (c) {
2426                 case 'R':
2427                         request = optarg;
2428                         break;
2429                 case 'f':
2430                         cmd_file = optarg;
2431                         break;
2432                 case 'd':
2433                         data_filename = optarg;
2434                         break;
2435                 case 'i':
2436                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2437                         break;
2438 #ifndef READ_ONLY
2439                 case 'w':
2440                         open_flags |= EXT2_FLAG_RW;
2441                         break;
2442 #endif
2443                 case 'D':
2444                         open_flags |= EXT2_FLAG_DIRECT_IO;
2445                         break;
2446                 case 'b':
2447                         blocksize = parse_ulong(optarg, argv[0],
2448                                                 "block size", 0);
2449                         break;
2450                 case 's':
2451                         superblock = parse_ulong(optarg, argv[0],
2452                                                  "superblock number", 0);
2453                         break;
2454                 case 'c':
2455                         catastrophic = 1;
2456                         break;
2457                 case 'V':
2458                         /* Print version number and exit */
2459                         fprintf(stderr, "\tUsing %s\n",
2460                                 error_message(EXT2_ET_BASE));
2461                         exit(0);
2462                 default:
2463                         com_err(argv[0], 0, usage, debug_prog_name);
2464                         return 1;
2465                 }
2466         }
2467         if (optind < argc)
2468                 open_filesystem(argv[optind], open_flags,
2469                                 superblock, blocksize, catastrophic,
2470                                 data_filename);
2471
2472         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2473                                        &debug_cmds, &retval);
2474         if (retval) {
2475                 ss_perror(sci_idx, retval, "creating invocation");
2476                 exit(1);
2477         }
2478         ss_get_readline(sci_idx);
2479
2480         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2481         if (retval) {
2482                 ss_perror(sci_idx, retval, "adding standard requests");
2483                 exit (1);
2484         }
2485         if (extra_cmds)
2486                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2487         if (retval) {
2488                 ss_perror(sci_idx, retval, "adding extra requests");
2489                 exit (1);
2490         }
2491         if (request) {
2492                 retval = 0;
2493                 retval = ss_execute_line(sci_idx, request);
2494                 if (retval) {
2495                         ss_perror(sci_idx, retval, request);
2496                         exit_status++;
2497                 }
2498         } else if (cmd_file) {
2499                 exit_status = source_file(cmd_file, sci_idx);
2500         } else {
2501                 ss_listen(sci_idx);
2502         }
2503
2504         ss_delete_invocation(sci_idx);
2505
2506         if (current_fs)
2507                 close_filesystem();
2508
2509         remove_error_table(&et_ext2_error_table);
2510         return exit_status;
2511 }