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 quota_ctx_t     current_qctx;
  60 ext2_ino_t      root, cwd;
  61
  62 static void open_filesystem(char *device, int open_flags, blk64_t superblock,
  63                             blk64_t blocksize, int catastrophic,
  64                             char *data_filename)
  65 {
  66         int     retval;
  67         io_channel data_io = 0;
  68
  69         if (superblock != 0 && blocksize == 0) {
  70                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  71                 current_fs = NULL;
  72                 return;
  73         }
  74
  75         if (data_filename) {
  76                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  77                         com_err(device, 0,
  78                                 "The -d option is only valid when reading an e2image file");
  79                         current_fs = NULL;
  80                         return;
  81                 }
  82                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  83                 if (retval) {
  84                         com_err(data_filename, 0, "while opening data source");
  85                         current_fs = NULL;
  86                         return;
  87                 }
  88         }
  89
  90         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  91                 com_err(device, 0,
  92                         "opening read-only because of catastrophic mode");
  93                 open_flags &= ~EXT2_FLAG_RW;
  94         }
  95         if (catastrophic)
  96                 open_flags |= EXT2_FLAG_SKIP_MMP;
  97
  98         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  99                              unix_io_manager, &current_fs);
 100         if (retval) {
 101                 com_err(device, retval, "while opening filesystem");
 102                 current_fs = NULL;
 103                 return;
 104         }
 105         current_fs->default_bitmap_type = EXT2FS_BMAP64_RBTREE;
 106
 107         if (catastrophic)
 108                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
 109         else {
 110                 retval = ext2fs_read_inode_bitmap(current_fs);
 111                 if (retval) {
 112                         com_err(device, retval, "while reading inode bitmap");
 113                         goto errout;
 114                 }
 115                 retval = ext2fs_read_block_bitmap(current_fs);
 116                 if (retval) {
 117                         com_err(device, retval, "while reading block bitmap");
 118                         goto errout;
 119                 }
 120         }
 121
 122         if (data_io) {
 123                 retval = ext2fs_set_data_io(current_fs, data_io);
 124                 if (retval) {
 125                         com_err(device, retval,
 126                                 "while setting data source");
 127                         goto errout;
 128                 }
 129         }
 130
 131         root = cwd = EXT2_ROOT_INO;
 132         return;
 133
 134 errout:
 135         retval = ext2fs_close_free(&current_fs);
 136         if (retval)
 137                 com_err(device, retval, "while trying to close filesystem");
 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                         err = strtoblk(argv[0], optarg,
 185                                        "superblock block number", &superblock);
 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         if (current_qctx)
 242                 quota_release_context(&current_qctx);
 243         retval = ext2fs_close_free(&current_fs);
 244         if (retval)
 245                 com_err("ext2fs_close", retval, 0);
 246         return;
 247 }
 248
 249 void do_close_filesys(int argc, char **argv)
 250 {
 251         int     c;
 252
 253         if (check_fs_open(argv[0]))
 254                 return;
 255
 256         reset_getopt();
 257         while ((c = getopt (argc, argv, "a")) != EOF) {
 258                 switch (c) {
 259                 case 'a':
 260                         current_fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
 261                         break;
 262                 default:
 263                         goto print_usage;
 264                 }
 265         }
 266
 267         if (argc > optind) {
 268         print_usage:
 269                 com_err(0, 0, "Usage: close_filesys [-a]");
 270                 return;
 271         }
 272
 273         close_filesystem();
 274 }
 275
 276 #ifndef READ_ONLY
 277 void do_init_filesys(int argc, char **argv)
 278 {
 279         struct ext2_super_block param;
 280         errcode_t       retval;
 281         int             err;
 282         blk64_t         blocks;
 283
 284         if (common_args_process(argc, argv, 3, 3, "initialize",
 285                                 "<device> <blocks>", CHECK_FS_NOTOPEN))
 286                 return;
 287
 288         memset(&param, 0, sizeof(struct ext2_super_block));
 289         err = strtoblk(argv[0], argv[2], "blocks count", &blocks);
 290         if (err)
 291                 return;
 292         ext2fs_blocks_count_set(&param, blocks);
 293         retval = ext2fs_initialize(argv[1], 0, &param,
 294                                    unix_io_manager, &current_fs);
 295         if (retval) {
 296                 com_err(argv[1], retval, "while initializing filesystem");
 297                 current_fs = NULL;
 298                 return;
 299         }
 300         root = cwd = EXT2_ROOT_INO;
 301         return;
 302 }
 303
 304 static void print_features(struct ext2_super_block * s, FILE *f)
 305 {
 306         int     i, j, printed=0;
 307         __u32   *mask = &s->s_feature_compat, m;
 308
 309         fputs("Filesystem features:", f);
 310         for (i=0; i <3; i++,mask++) {
 311                 for (j=0,m=1; j < 32; j++, m<<=1) {
 312                         if (*mask & m) {
 313                                 fprintf(f, " %s", e2p_feature2string(i, m));
 314                                 printed++;
 315                         }
 316                 }
 317         }
 318         if (printed == 0)
 319                 fputs("(none)", f);
 320         fputs("\n", f);
 321 }
 322 #endif /* READ_ONLY */
 323
 324 static void print_bg_opts(ext2_filsys fs, dgrp_t group, int mask,
 325                           const char *str, int *first, FILE *f)
 326 {
 327         if (ext2fs_bg_flags_test(fs, group, mask)) {
 328                 if (*first) {
 329                         fputs("           [", f);
 330                         *first = 0;
 331                 } else
 332                         fputs(", ", f);
 333                 fputs(str, f);
 334         }
 335 }
 336
 337 void do_show_super_stats(int argc, char *argv[])
 338 {
 339         const char *units ="block";
 340         dgrp_t  i;
 341         FILE    *out;
 342         int     c, header_only = 0;
 343         int     numdirs = 0, first, gdt_csum;
 344
 345         reset_getopt();
 346         while ((c = getopt (argc, argv, "h")) != EOF) {
 347                 switch (c) {
 348                 case 'h':
 349                         header_only++;
 350                         break;
 351                 default:
 352                         goto print_usage;
 353                 }
 354         }
 355         if (optind != argc) {
 356                 goto print_usage;
 357         }
 358         if (check_fs_open(argv[0]))
 359                 return;
 360         out = open_pager();
 361
 362         if (EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 363                                        EXT4_FEATURE_RO_COMPAT_BIGALLOC))
 364                 units = "cluster";
 365
 366         list_super2(current_fs->super, out);
 367         for (i=0; i < current_fs->group_desc_count; i++)
 368                 numdirs += ext2fs_bg_used_dirs_count(current_fs, i);
 369         fprintf(out, "Directories:              %d\n", numdirs);
 370
 371         if (header_only) {
 372                 close_pager(out);
 373                 return;
 374         }
 375
 376         gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 377                                               EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 378         for (i = 0; i < current_fs->group_desc_count; i++) {
 379                 fprintf(out, " Group %2d: block bitmap at %llu, "
 380                         "inode bitmap at %llu, "
 381                         "inode table at %llu\n"
 382                         "           %u free %s%s, "
 383                         "%u free %s, "
 384                         "%u used %s%s",
 385                         i, ext2fs_block_bitmap_loc(current_fs, i),
 386                         ext2fs_inode_bitmap_loc(current_fs, i),
 387                         ext2fs_inode_table_loc(current_fs, i),
 388                         ext2fs_bg_free_blocks_count(current_fs, i), units,
 389                         ext2fs_bg_free_blocks_count(current_fs, i) != 1 ?
 390                         "s" : "",
 391                         ext2fs_bg_free_inodes_count(current_fs, i),
 392                         ext2fs_bg_free_inodes_count(current_fs, i) != 1 ?
 393                         "inodes" : "inode",
 394                         ext2fs_bg_used_dirs_count(current_fs, i),
 395                         ext2fs_bg_used_dirs_count(current_fs, i) != 1 ? "directories"
 396                                 : "directory", gdt_csum ? ", " : "\n");
 397                 if (gdt_csum)
 398                         fprintf(out, "%u unused %s\n",
 399                                 ext2fs_bg_itable_unused(current_fs, i),
 400                                 ext2fs_bg_itable_unused(current_fs, i) != 1 ?
 401                                 "inodes" : "inode");
 402                 first = 1;
 403                 print_bg_opts(current_fs, i, EXT2_BG_INODE_UNINIT, "Inode not init",
 404                               &first, out);
 405                 print_bg_opts(current_fs, i, EXT2_BG_BLOCK_UNINIT, "Block not init",
 406                               &first, out);
 407                 if (gdt_csum) {
 408                         fprintf(out, "%sChecksum 0x%04x",
 409                                 first ? "           [":", ", ext2fs_bg_checksum(current_fs, i));
 410                         first = 0;
 411                 }
 412                 if (!first)
 413                         fputs("]\n", out);
 414         }
 415         close_pager(out);
 416         return;
 417 print_usage:
 418         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 419 }
 420
 421 #ifndef READ_ONLY
 422 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 423                       char **argv EXT2FS_ATTR((unused)))
 424 {
 425         if (check_fs_open(argv[0]))
 426                 return;
 427         if (check_fs_read_write(argv[0]))
 428                 return;
 429
 430         if (argv[1] && !strcmp(argv[1], "-clean"))
 431                 current_fs->super->s_state |= EXT2_VALID_FS;
 432         else
 433                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 434         ext2fs_mark_super_dirty(current_fs);
 435 }
 436 #endif /* READ_ONLY */
 437
 438 struct list_blocks_struct {
 439         FILE            *f;
 440         e2_blkcnt_t     total;
 441         blk64_t         first_block, last_block;
 442         e2_blkcnt_t     first_bcnt, last_bcnt;
 443         e2_blkcnt_t     first;
 444 };
 445
 446 static void finish_range(struct list_blocks_struct *lb)
 447 {
 448         if (lb->first_block == 0)
 449                 return;
 450         if (lb->first)
 451                 lb->first = 0;
 452         else
 453                 fprintf(lb->f, ", ");
 454         if (lb->first_block == lb->last_block)
 455                 fprintf(lb->f, "(%lld):%llu",
 456                         (long long)lb->first_bcnt, lb->first_block);
 457         else
 458                 fprintf(lb->f, "(%lld-%lld):%llu-%llu",
 459                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 460                         lb->first_block, lb->last_block);
 461         lb->first_block = 0;
 462 }
 463
 464 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 465                             blk64_t *blocknr, e2_blkcnt_t blockcnt,
 466                             blk64_t ref_block EXT2FS_ATTR((unused)),
 467                             int ref_offset EXT2FS_ATTR((unused)),
 468                             void *private)
 469 {
 470         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 471
 472         lb->total++;
 473         if (blockcnt >= 0) {
 474                 /*
 475                  * See if we can add on to the existing range (if it exists)
 476                  */
 477                 if (lb->first_block &&
 478                     (lb->last_block+1 == *blocknr) &&
 479                     (lb->last_bcnt+1 == blockcnt)) {
 480                         lb->last_block = *blocknr;
 481                         lb->last_bcnt = blockcnt;
 482                         return 0;
 483                 }
 484                 /*
 485                  * Start a new range.
 486                  */
 487                 finish_range(lb);
 488                 lb->first_block = lb->last_block = *blocknr;
 489                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 490                 return 0;
 491         }
 492         /*
 493          * Not a normal block.  Always force a new range.
 494          */
 495         finish_range(lb);
 496         if (lb->first)
 497                 lb->first = 0;
 498         else
 499                 fprintf(lb->f, ", ");
 500         if (blockcnt == -1)
 501                 fprintf(lb->f, "(IND):%llu", (unsigned long long) *blocknr);
 502         else if (blockcnt == -2)
 503                 fprintf(lb->f, "(DIND):%llu", (unsigned long long) *blocknr);
 504         else if (blockcnt == -3)
 505                 fprintf(lb->f, "(TIND):%llu", (unsigned long long) *blocknr);
 506         return 0;
 507 }
 508
 509 static void dump_xattr_string(FILE *out, const char *str, int len)
 510 {
 511         int printable = 0;
 512         int i;
 513
 514         /* check: is string "printable enough?" */
 515         for (i = 0; i < len; i++)
 516                 if (isprint(str[i]))
 517                         printable++;
 518
 519         if (printable <= len*7/8)
 520                 printable = 0;
 521
 522         for (i = 0; i < len; i++)
 523                 if (printable)
 524                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 525                                 (unsigned char)str[i]);
 526                 else
 527                         fprintf(out, "%02x ", (unsigned char)str[i]);
 528 }
 529
 530 static void internal_dump_inode_extra(FILE *out,
 531                                       const char *prefix EXT2FS_ATTR((unused)),
 532                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 533                                       struct ext2_inode_large *inode)
 534 {
 535         struct ext2_ext_attr_entry *entry;
 536         __u32 *magic;
 537         char *start, *end;
 538         unsigned int storage_size;
 539
 540         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 541         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 542                         EXT2_GOOD_OLD_INODE_SIZE) {
 543                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 544                                 inode->i_extra_isize);
 545                 return;
 546         }
 547         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 548                         EXT2_GOOD_OLD_INODE_SIZE -
 549                         inode->i_extra_isize;
 550         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 551                         inode->i_extra_isize);
 552         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 553                 fprintf(out, "Extended attributes stored in inode body: \n");
 554                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 555                 start = (char *) magic + sizeof(__u32);
 556                 entry = (struct ext2_ext_attr_entry *) start;
 557                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 558                         struct ext2_ext_attr_entry *next =
 559                                 EXT2_EXT_ATTR_NEXT(entry);
 560                         if (entry->e_value_size > storage_size ||
 561                                         (char *) next >= end) {
 562                                 fprintf(out, "invalid EA entry in inode\n");
 563                                 return;
 564                         }
 565                         fprintf(out, "  ");
 566                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 567                                           entry->e_name_len);
 568                         fprintf(out, " = \"");
 569                         dump_xattr_string(out, start + entry->e_value_offs,
 570                                                 entry->e_value_size);
 571                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 572                         entry = next;
 573                 }
 574         }
 575 }
 576
 577 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 578 {
 579         struct list_blocks_struct lb;
 580
 581         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 582         lb.total = 0;
 583         lb.first_block = 0;
 584         lb.f = f;
 585         lb.first = 1;
 586         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 587                               list_blocks_proc, (void *)&lb);
 588         finish_range(&lb);
 589         if (lb.total)
 590                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 591         fprintf(f,"\n");
 592 }
 593
 594 static int int_log10(unsigned long long arg)
 595 {
 596         int     l = 0;
 597
 598         arg = arg / 10;
 599         while (arg) {
 600                 l++;
 601                 arg = arg / 10;
 602         }
 603         return l;
 604 }
 605
 606 #define DUMP_LEAF_EXTENTS       0x01
 607 #define DUMP_NODE_EXTENTS       0x02
 608 #define DUMP_EXTENT_TABLE       0x04
 609
 610 static void dump_extents(FILE *f, const char *prefix, ext2_ino_t ino,
 611                          int flags, int logical_width, int physical_width)
 612 {
 613         ext2_extent_handle_t    handle;
 614         struct ext2fs_extent    extent;
 615         struct ext2_extent_info info;
 616         int                     op = EXT2_EXTENT_ROOT;
 617         unsigned int            printed = 0;
 618         errcode_t               errcode;
 619
 620         errcode = ext2fs_extent_open(current_fs, ino, &handle);
 621         if (errcode)
 622                 return;
 623
 624         if (flags & DUMP_EXTENT_TABLE)
 625                 fprintf(f, "Level Entries %*s %*s Length Flags\n",
 626                         (logical_width*2)+3, "Logical",
 627                         (physical_width*2)+3, "Physical");
 628         else
 629                 fprintf(f, "%sEXTENTS:\n%s", prefix, prefix);
 630
 631         while (1) {
 632                 errcode = ext2fs_extent_get(handle, op, &extent);
 633
 634                 if (errcode)
 635                         break;
 636
 637                 op = EXT2_EXTENT_NEXT;
 638
 639                 if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 640                         continue;
 641
 642                 if (extent.e_flags & EXT2_EXTENT_FLAGS_LEAF) {
 643                         if ((flags & DUMP_LEAF_EXTENTS) == 0)
 644                                 continue;
 645                 } else {
 646                         if ((flags & DUMP_NODE_EXTENTS) == 0)
 647                                 continue;
 648                 }
 649
 650                 errcode = ext2fs_extent_get_info(handle, &info);
 651                 if (errcode)
 652                         continue;
 653
 654                 if (!(extent.e_flags & EXT2_EXTENT_FLAGS_LEAF)) {
 655                         if (extent.e_flags & EXT2_EXTENT_FLAGS_SECOND_VISIT)
 656                                 continue;
 657
 658                         if (flags & DUMP_EXTENT_TABLE) {
 659                                 fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 660                                         "%*llu%*s %6u\n",
 661                                         info.curr_level, info.max_depth,
 662                                         info.curr_entry, info.num_entries,
 663                                         logical_width,
 664                                         extent.e_lblk,
 665                                         logical_width,
 666                                         extent.e_lblk + (extent.e_len - 1),
 667                                         physical_width,
 668                                         extent.e_pblk,
 669                                         physical_width+3, "", extent.e_len);
 670                                 continue;
 671                         }
 672
 673                         fprintf(f, "%s(ETB%d):%lld",
 674                                 printed ? ", " : "", info.curr_level,
 675                                 extent.e_pblk);
 676                         printed = 1;
 677                         continue;
 678                 }
 679
 680                 if (flags & DUMP_EXTENT_TABLE) {
 681                         fprintf(f, "%2d/%2d %3d/%3d %*llu - %*llu "
 682                                 "%*llu - %*llu %6u %s\n",
 683                                 info.curr_level, info.max_depth,
 684                                 info.curr_entry, info.num_entries,
 685                                 logical_width,
 686                                 extent.e_lblk,
 687                                 logical_width,
 688                                 extent.e_lblk + (extent.e_len - 1),
 689                                 physical_width,
 690                                 extent.e_pblk,
 691                                 physical_width,
 692                                 extent.e_pblk + (extent.e_len - 1),
 693                                 extent.e_len,
 694                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 695                                         "Uninit" : "");
 696                         continue;
 697                 }
 698
 699                 if (extent.e_len == 0)
 700                         continue;
 701                 else if (extent.e_len == 1)
 702                         fprintf(f,
 703                                 "%s(%lld%s):%lld",
 704                                 printed ? ", " : "",
 705                                 extent.e_lblk,
 706                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 707                                 "[u]" : "",
 708                                 extent.e_pblk);
 709                 else
 710                         fprintf(f,
 711                                 "%s(%lld-%lld%s):%lld-%lld",
 712                                 printed ? ", " : "",
 713                                 extent.e_lblk,
 714                                 extent.e_lblk + (extent.e_len - 1),
 715                                 extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT ?
 716                                         "[u]" : "",
 717                                 extent.e_pblk,
 718                                 extent.e_pblk + (extent.e_len - 1));
 719                 printed = 1;
 720         }
 721         if (printed)
 722                 fprintf(f, "\n");
 723 }
 724
 725 void internal_dump_inode(FILE *out, const char *prefix,
 726                          ext2_ino_t inode_num, struct ext2_inode *inode,
 727                          int do_dump_blocks)
 728 {
 729         const char *i_type;
 730         char frag, fsize;
 731         int os = current_fs->super->s_creator_os;
 732         struct ext2_inode_large *large_inode;
 733         int is_large_inode = 0;
 734
 735         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 736                 is_large_inode = 1;
 737         large_inode = (struct ext2_inode_large *) inode;
 738
 739         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 740         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 741         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 742         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 743         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 744         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 745         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 746         else i_type = "bad type";
 747         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 748         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 749                 prefix, inode->i_mode & 0777, inode->i_flags);
 750         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 751                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 752                         prefix, inode->i_generation, large_inode->i_version_hi,
 753                         inode->osd1.linux1.l_i_version);
 754         } else {
 755                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 756                         inode->i_generation, inode->osd1.linux1.l_i_version);
 757         }
 758         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 759                 prefix, inode_uid(*inode), inode_gid(*inode));
 760         if (LINUX_S_ISREG(inode->i_mode))
 761                 fprintf(out, "%llu\n", EXT2_I_SIZE(inode));
 762         else
 763                 fprintf(out, "%d\n", inode->i_size);
 764         if (os == EXT2_OS_HURD)
 765                 fprintf(out,
 766                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 767                         prefix,
 768                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 769                         inode->osd1.hurd1.h_i_translator);
 770         else
 771                 fprintf(out, "%sFile ACL: %llu    Directory ACL: %d\n",
 772                         prefix,
 773                         inode->i_file_acl | ((long long)
 774                                 (inode->osd2.linux2.l_i_file_acl_high) << 32),
 775                         LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 776         if (os == EXT2_OS_LINUX)
 777                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 778                         prefix, inode->i_links_count,
 779                         (((unsigned long long)
 780                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 781                         inode->i_blocks);
 782         else
 783                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 784                         prefix, inode->i_links_count, inode->i_blocks);
 785         switch (os) {
 786             case EXT2_OS_HURD:
 787                 frag = inode->osd2.hurd2.h_i_frag;
 788                 fsize = inode->osd2.hurd2.h_i_fsize;
 789                 break;
 790             default:
 791                 frag = fsize = 0;
 792         }
 793         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 794                 prefix, inode->i_faddr, frag, fsize);
 795         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 796                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 797                         inode->i_ctime, large_inode->i_ctime_extra,
 798                         time_to_string(inode->i_ctime));
 799                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 800                         inode->i_atime, large_inode->i_atime_extra,
 801                         time_to_string(inode->i_atime));
 802                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 803                         inode->i_mtime, large_inode->i_mtime_extra,
 804                         time_to_string(inode->i_mtime));
 805                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 806                         large_inode->i_crtime, large_inode->i_crtime_extra,
 807                         time_to_string(large_inode->i_crtime));
 808         } else {
 809                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 810                         time_to_string(inode->i_ctime));
 811                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 812                         time_to_string(inode->i_atime));
 813                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 814                         time_to_string(inode->i_mtime));
 815         }
 816         if (inode->i_dtime)
 817           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 818                   time_to_string(inode->i_dtime));
 819         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 820                 internal_dump_inode_extra(out, prefix, inode_num,
 821                                           (struct ext2_inode_large *) inode);
 822         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 823                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 824                         (int) inode->i_size, (char *)inode->i_block);
 825         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 826                 int major, minor;
 827                 const char *devnote;
 828
 829                 if (inode->i_block[0]) {
 830                         major = (inode->i_block[0] >> 8) & 255;
 831                         minor = inode->i_block[0] & 255;
 832                         devnote = "";
 833                 } else {
 834                         major = (inode->i_block[1] & 0xfff00) >> 8;
 835                         minor = ((inode->i_block[1] & 0xff) |
 836                                  ((inode->i_block[1] >> 12) & 0xfff00));
 837                         devnote = "(New-style) ";
 838                 }
 839                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 840                         devnote, major, minor, major, minor);
 841         } else if (do_dump_blocks) {
 842                 if (inode->i_flags & EXT4_EXTENTS_FL)
 843                         dump_extents(out, prefix, inode_num,
 844                                      DUMP_LEAF_EXTENTS|DUMP_NODE_EXTENTS, 0, 0);
 845                 else
 846                         dump_blocks(out, prefix, inode_num);
 847         }
 848 }
 849
 850 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 851 {
 852         FILE    *out;
 853
 854         out = open_pager();
 855         internal_dump_inode(out, "", inode_num, inode, 1);
 856         close_pager(out);
 857 }
 858
 859 void do_stat(int argc, char *argv[])
 860 {
 861         ext2_ino_t      inode;
 862         struct ext2_inode * inode_buf;
 863
 864         if (check_fs_open(argv[0]))
 865                 return;
 866
 867         inode_buf = (struct ext2_inode *)
 868                         malloc(EXT2_INODE_SIZE(current_fs->super));
 869         if (!inode_buf) {
 870                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 871                 return;
 872         }
 873
 874         if (common_inode_args_process(argc, argv, &inode, 0)) {
 875                 free(inode_buf);
 876                 return;
 877         }
 878
 879         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 880                                         EXT2_INODE_SIZE(current_fs->super))) {
 881                 free(inode_buf);
 882                 return;
 883         }
 884
 885         dump_inode(inode, inode_buf);
 886         free(inode_buf);
 887         return;
 888 }
 889
 890 void do_dump_extents(int argc, char **argv)
 891 {
 892         struct ext2_inode inode;
 893         ext2_ino_t      ino;
 894         FILE            *out;
 895         int             c, flags = 0;
 896         int             logical_width;
 897         int             physical_width;
 898
 899         reset_getopt();
 900         while ((c = getopt(argc, argv, "nl")) != EOF) {
 901                 switch (c) {
 902                 case 'n':
 903                         flags |= DUMP_NODE_EXTENTS;
 904                         break;
 905                 case 'l':
 906                         flags |= DUMP_LEAF_EXTENTS;
 907                         break;
 908                 }
 909         }
 910
 911         if (argc != optind + 1) {
 912                 com_err(0, 0, "Usage: dump_extents [-n] [-l] file");
 913                 return;
 914         }
 915
 916         if (flags == 0)
 917                 flags = DUMP_NODE_EXTENTS | DUMP_LEAF_EXTENTS;
 918         flags |= DUMP_EXTENT_TABLE;
 919
 920         if (check_fs_open(argv[0]))
 921                 return;
 922
 923         ino = string_to_inode(argv[optind]);
 924         if (ino == 0)
 925                 return;
 926
 927         if (debugfs_read_inode(ino, &inode, argv[0]))
 928                 return;
 929
 930         if ((inode.i_flags & EXT4_EXTENTS_FL) == 0) {
 931                 fprintf(stderr, "%s: does not uses extent block maps\n",
 932                         argv[optind]);
 933                 return;
 934         }
 935
 936         logical_width = int_log10((EXT2_I_SIZE(&inode)+current_fs->blocksize-1)/
 937                                   current_fs->blocksize) + 1;
 938         if (logical_width < 5)
 939                 logical_width = 5;
 940         physical_width = int_log10(ext2fs_blocks_count(current_fs->super)) + 1;
 941         if (physical_width < 5)
 942                 physical_width = 5;
 943
 944         out = open_pager();
 945         dump_extents(out, "", ino, flags, logical_width, physical_width);
 946         close_pager(out);
 947         return;
 948 }
 949
 950 static int print_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 951                              blk64_t *blocknr,
 952                              e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
 953                              blk64_t ref_block EXT2FS_ATTR((unused)),
 954                              int ref_offset EXT2FS_ATTR((unused)),
 955                              void *private EXT2FS_ATTR((unused)))
 956 {
 957         printf("%llu ", *blocknr);
 958         return 0;
 959 }
 960
 961 void do_blocks(int argc, char *argv[])
 962 {
 963         ext2_ino_t      inode;
 964
 965         if (check_fs_open(argv[0]))
 966                 return;
 967
 968         if (common_inode_args_process(argc, argv, &inode, 0)) {
 969                 return;
 970         }
 971
 972         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 973                               print_blocks_proc, NULL);
 974         fputc('\n', stdout);
 975         return;
 976 }
 977
 978 void do_chroot(int argc, char *argv[])
 979 {
 980         ext2_ino_t inode;
 981         int retval;
 982
 983         if (common_inode_args_process(argc, argv, &inode, 0))
 984                 return;
 985
 986         retval = ext2fs_check_directory(current_fs, inode);
 987         if (retval)  {
 988                 com_err(argv[1], retval, 0);
 989                 return;
 990         }
 991         root = inode;
 992 }
 993
 994 #ifndef READ_ONLY
 995 void do_clri(int argc, char *argv[])
 996 {
 997         ext2_ino_t inode;
 998         struct ext2_inode inode_buf;
 999
1000         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1001                 return;
1002
1003         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
1004                 return;
1005         memset(&inode_buf, 0, sizeof(inode_buf));
1006         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
1007                 return;
1008 }
1009
1010 void do_freei(int argc, char *argv[])
1011 {
1012         unsigned int    len = 1;
1013         int             err = 0;
1014         ext2_ino_t      inode;
1015
1016         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1017                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1018                 return;
1019         if (check_fs_read_write(argv[0]))
1020                 return;
1021
1022         inode = string_to_inode(argv[1]);
1023         if (!inode)
1024                 return;
1025
1026         if (argc == 3) {
1027                 len = parse_ulong(argv[2], argv[0], "length", &err);
1028                 if (err)
1029                         return;
1030         }
1031
1032         if (len == 1 &&
1033             !ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1034                 com_err(argv[0], 0, "Warning: inode already clear");
1035         while (len-- > 0)
1036                 ext2fs_unmark_inode_bitmap2(current_fs->inode_map, inode++);
1037         ext2fs_mark_ib_dirty(current_fs);
1038 }
1039
1040 void do_seti(int argc, char *argv[])
1041 {
1042         unsigned int    len = 1;
1043         int             err = 0;
1044         ext2_ino_t      inode;
1045
1046         if (common_args_process(argc, argv, 2, 3, argv[0], "<file> [num]",
1047                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1048                 return;
1049         if (check_fs_read_write(argv[0]))
1050                 return;
1051
1052         inode = string_to_inode(argv[1]);
1053         if (!inode)
1054                 return;
1055
1056         if (argc == 3) {
1057                 len = parse_ulong(argv[2], argv[0], "length", &err);
1058                 if (err)
1059                         return;
1060         }
1061
1062         if ((len == 1) &&
1063             ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1064                 com_err(argv[0], 0, "Warning: inode already set");
1065         while (len-- > 0)
1066                 ext2fs_mark_inode_bitmap2(current_fs->inode_map, inode++);
1067         ext2fs_mark_ib_dirty(current_fs);
1068 }
1069 #endif /* READ_ONLY */
1070
1071 void do_testi(int argc, char *argv[])
1072 {
1073         ext2_ino_t inode;
1074
1075         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
1076                 return;
1077
1078         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,inode))
1079                 printf("Inode %u is marked in use\n", inode);
1080         else
1081                 printf("Inode %u is not in use\n", inode);
1082 }
1083
1084 #ifndef READ_ONLY
1085 void do_freeb(int argc, char *argv[])
1086 {
1087         blk64_t block;
1088         blk64_t count = 1;
1089
1090         if (common_block_args_process(argc, argv, &block, &count))
1091                 return;
1092         if (check_fs_read_write(argv[0]))
1093                 return;
1094         while (count-- > 0) {
1095                 if (!ext2fs_test_block_bitmap2(current_fs->block_map,block))
1096                         com_err(argv[0], 0, "Warning: block %llu already clear",
1097                                 block);
1098                 ext2fs_unmark_block_bitmap2(current_fs->block_map,block);
1099                 block++;
1100         }
1101         ext2fs_mark_bb_dirty(current_fs);
1102 }
1103
1104 void do_setb(int argc, char *argv[])
1105 {
1106         blk64_t block;
1107         blk64_t count = 1;
1108
1109         if (common_block_args_process(argc, argv, &block, &count))
1110                 return;
1111         if (check_fs_read_write(argv[0]))
1112                 return;
1113         while (count-- > 0) {
1114                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1115                         com_err(argv[0], 0, "Warning: block %llu already set",
1116                                 block);
1117                 ext2fs_mark_block_bitmap2(current_fs->block_map,block);
1118                 block++;
1119         }
1120         ext2fs_mark_bb_dirty(current_fs);
1121 }
1122 #endif /* READ_ONLY */
1123
1124 void do_testb(int argc, char *argv[])
1125 {
1126         blk64_t block;
1127         blk64_t count = 1;
1128
1129         if (common_block_args_process(argc, argv, &block, &count))
1130                 return;
1131         while (count-- > 0) {
1132                 if (ext2fs_test_block_bitmap2(current_fs->block_map,block))
1133                         printf("Block %llu marked in use\n", block);
1134                 else
1135                         printf("Block %llu not in use\n", block);
1136                 block++;
1137         }
1138 }
1139
1140 #ifndef READ_ONLY
1141 static void modify_u8(char *com, const char *prompt,
1142                       const char *format, __u8 *val)
1143 {
1144         char buf[200];
1145         unsigned long v;
1146         char *tmp;
1147
1148         sprintf(buf, format, *val);
1149         printf("%30s    [%s] ", prompt, buf);
1150         if (!fgets(buf, sizeof(buf), stdin))
1151                 return;
1152         if (buf[strlen (buf) - 1] == '\n')
1153                 buf[strlen (buf) - 1] = '\0';
1154         if (!buf[0])
1155                 return;
1156         v = strtoul(buf, &tmp, 0);
1157         if (*tmp)
1158                 com_err(com, 0, "Bad value - %s", buf);
1159         else
1160                 *val = v;
1161 }
1162
1163 static void modify_u16(char *com, const char *prompt,
1164                        const char *format, __u16 *val)
1165 {
1166         char buf[200];
1167         unsigned long v;
1168         char *tmp;
1169
1170         sprintf(buf, format, *val);
1171         printf("%30s    [%s] ", prompt, buf);
1172         if (!fgets(buf, sizeof(buf), stdin))
1173                 return;
1174         if (buf[strlen (buf) - 1] == '\n')
1175                 buf[strlen (buf) - 1] = '\0';
1176         if (!buf[0])
1177                 return;
1178         v = strtoul(buf, &tmp, 0);
1179         if (*tmp)
1180                 com_err(com, 0, "Bad value - %s", buf);
1181         else
1182                 *val = v;
1183 }
1184
1185 static void modify_u32(char *com, const char *prompt,
1186                        const char *format, __u32 *val)
1187 {
1188         char buf[200];
1189         unsigned long v;
1190         char *tmp;
1191
1192         sprintf(buf, format, *val);
1193         printf("%30s    [%s] ", prompt, buf);
1194         if (!fgets(buf, sizeof(buf), stdin))
1195                 return;
1196         if (buf[strlen (buf) - 1] == '\n')
1197                 buf[strlen (buf) - 1] = '\0';
1198         if (!buf[0])
1199                 return;
1200         v = strtoul(buf, &tmp, 0);
1201         if (*tmp)
1202                 com_err(com, 0, "Bad value - %s", buf);
1203         else
1204                 *val = v;
1205 }
1206
1207
1208 void do_modify_inode(int argc, char *argv[])
1209 {
1210         struct ext2_inode inode;
1211         ext2_ino_t      inode_num;
1212         int             i;
1213         unsigned char   *frag, *fsize;
1214         char            buf[80];
1215         int             os;
1216         const char      *hex_format = "0x%x";
1217         const char      *octal_format = "0%o";
1218         const char      *decimal_format = "%d";
1219         const char      *unsignedlong_format = "%lu";
1220
1221         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1222                 return;
1223
1224         os = current_fs->super->s_creator_os;
1225
1226         if (debugfs_read_inode(inode_num, &inode, argv[1]))
1227                 return;
1228
1229         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
1230         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
1231         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
1232         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
1233         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
1234         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
1235         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
1236         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
1237         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
1238         if (os == EXT2_OS_LINUX)
1239                 modify_u16(argv[0], "Block count high", unsignedlong_format,
1240                            &inode.osd2.linux2.l_i_blocks_hi);
1241         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
1242         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
1243         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
1244 #if 0
1245         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
1246 #endif
1247         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
1248         if (LINUX_S_ISDIR(inode.i_mode))
1249                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
1250         else
1251                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
1252
1253         if (os == EXT2_OS_HURD)
1254                 modify_u32(argv[0], "Translator Block",
1255                             decimal_format, &inode.osd1.hurd1.h_i_translator);
1256
1257         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
1258         switch (os) {
1259             case EXT2_OS_HURD:
1260                 frag = &inode.osd2.hurd2.h_i_frag;
1261                 fsize = &inode.osd2.hurd2.h_i_fsize;
1262                 break;
1263             default:
1264                 frag = fsize = 0;
1265         }
1266         if (frag)
1267                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
1268         if (fsize)
1269                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
1270
1271         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
1272                 sprintf(buf, "Direct Block #%d", i);
1273                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
1274         }
1275         modify_u32(argv[0], "Indirect Block", decimal_format,
1276                     &inode.i_block[EXT2_IND_BLOCK]);
1277         modify_u32(argv[0], "Double Indirect Block", decimal_format,
1278                     &inode.i_block[EXT2_DIND_BLOCK]);
1279         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
1280                     &inode.i_block[EXT2_TIND_BLOCK]);
1281         if (debugfs_write_inode(inode_num, &inode, argv[1]))
1282                 return;
1283 }
1284 #endif /* READ_ONLY */
1285
1286 void do_change_working_dir(int argc, char *argv[])
1287 {
1288         ext2_ino_t      inode;
1289         int             retval;
1290
1291         if (common_inode_args_process(argc, argv, &inode, 0))
1292                 return;
1293
1294         retval = ext2fs_check_directory(current_fs, inode);
1295         if (retval) {
1296                 com_err(argv[1], retval, 0);
1297                 return;
1298         }
1299         cwd = inode;
1300         return;
1301 }
1302
1303 void do_print_working_directory(int argc, char *argv[])
1304 {
1305         int     retval;
1306         char    *pathname = NULL;
1307
1308         if (common_args_process(argc, argv, 1, 1,
1309                                 "print_working_directory", "", 0))
1310                 return;
1311
1312         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
1313         if (retval) {
1314                 com_err(argv[0], retval,
1315                         "while trying to get pathname of cwd");
1316         }
1317         printf("[pwd]   INODE: %6u  PATH: %s\n",
1318                cwd, pathname ? pathname : "NULL");
1319         if (pathname) {
1320                 free(pathname);
1321                 pathname = NULL;
1322         }
1323         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1324         if (retval) {
1325                 com_err(argv[0], retval,
1326                         "while trying to get pathname of root");
1327         }
1328         printf("[root]  INODE: %6u  PATH: %s\n",
1329                root, pathname ? pathname : "NULL");
1330         if (pathname) {
1331                 free(pathname);
1332                 pathname = NULL;
1333         }
1334         return;
1335 }
1336
1337 #ifndef READ_ONLY
1338 static void make_link(char *sourcename, char *destname)
1339 {
1340         ext2_ino_t      ino;
1341         struct ext2_inode inode;
1342         int             retval;
1343         ext2_ino_t      dir;
1344         char            *dest, *cp, *base_name;
1345
1346         /*
1347          * Get the source inode
1348          */
1349         ino = string_to_inode(sourcename);
1350         if (!ino)
1351                 return;
1352         base_name = strrchr(sourcename, '/');
1353         if (base_name)
1354                 base_name++;
1355         else
1356                 base_name = sourcename;
1357         /*
1358          * Figure out the destination.  First see if it exists and is
1359          * a directory.
1360          */
1361         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1362                 dest = base_name;
1363         else {
1364                 /*
1365                  * OK, it doesn't exist.  See if it is
1366                  * '<dir>/basename' or 'basename'
1367                  */
1368                 cp = strrchr(destname, '/');
1369                 if (cp) {
1370                         *cp = 0;
1371                         dir = string_to_inode(destname);
1372                         if (!dir)
1373                                 return;
1374                         dest = cp+1;
1375                 } else {
1376                         dir = cwd;
1377                         dest = destname;
1378                 }
1379         }
1380
1381         if (debugfs_read_inode(ino, &inode, sourcename))
1382                 return;
1383
1384         retval = ext2fs_link(current_fs, dir, dest, ino,
1385                              ext2_file_type(inode.i_mode));
1386         if (retval)
1387                 com_err("make_link", retval, 0);
1388         return;
1389 }
1390
1391
1392 void do_link(int argc, char *argv[])
1393 {
1394         if (common_args_process(argc, argv, 3, 3, "link",
1395                                 "<source file> <dest_name>", CHECK_FS_RW))
1396                 return;
1397
1398         make_link(argv[1], argv[2]);
1399 }
1400
1401 static int mark_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1402                             e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1403                             blk64_t ref_block EXT2FS_ATTR((unused)),
1404                             int ref_offset EXT2FS_ATTR((unused)),
1405                             void *private EXT2FS_ATTR((unused)))
1406 {
1407         blk64_t block;
1408
1409         block = *blocknr;
1410         ext2fs_block_alloc_stats2(fs, block, +1);
1411         return 0;
1412 }
1413
1414 void do_undel(int argc, char *argv[])
1415 {
1416         ext2_ino_t      ino;
1417         struct ext2_inode inode;
1418
1419         if (common_args_process(argc, argv, 2, 3, "undelete",
1420                                 "<inode_num> [dest_name]",
1421                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1422                 return;
1423
1424         ino = string_to_inode(argv[1]);
1425         if (!ino)
1426                 return;
1427
1428         if (debugfs_read_inode(ino, &inode, argv[1]))
1429                 return;
1430
1431         if (ext2fs_test_inode_bitmap2(current_fs->inode_map, ino)) {
1432                 com_err(argv[1], 0, "Inode is not marked as deleted");
1433                 return;
1434         }
1435
1436         /*
1437          * XXX this function doesn't handle changing the links count on the
1438          * parent directory when undeleting a directory.
1439          */
1440         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1441         inode.i_dtime = 0;
1442
1443         if (debugfs_write_inode(ino, &inode, argv[0]))
1444                 return;
1445
1446         ext2fs_block_iterate3(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1447                               mark_blocks_proc, NULL);
1448
1449         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1450
1451         if (argc > 2)
1452                 make_link(argv[1], argv[2]);
1453 }
1454
1455 static void unlink_file_by_name(char *filename)
1456 {
1457         int             retval;
1458         ext2_ino_t      dir;
1459         char            *base_name;
1460
1461         base_name = strrchr(filename, '/');
1462         if (base_name) {
1463                 *base_name++ = '\0';
1464                 dir = string_to_inode(filename);
1465                 if (!dir)
1466                         return;
1467         } else {
1468                 dir = cwd;
1469                 base_name = filename;
1470         }
1471         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1472         if (retval)
1473                 com_err("unlink_file_by_name", retval, 0);
1474         return;
1475 }
1476
1477 void do_unlink(int argc, char *argv[])
1478 {
1479         if (common_args_process(argc, argv, 2, 2, "link",
1480                                 "<pathname>", CHECK_FS_RW))
1481                 return;
1482
1483         unlink_file_by_name(argv[1]);
1484 }
1485 #endif /* READ_ONLY */
1486
1487 void do_find_free_block(int argc, char *argv[])
1488 {
1489         blk64_t free_blk, goal, first_free = 0;
1490         int             count;
1491         errcode_t       retval;
1492         char            *tmp;
1493
1494         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1495                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1496                 return;
1497         }
1498         if (check_fs_open(argv[0]))
1499                 return;
1500
1501         if (argc > 1) {
1502                 count = strtol(argv[1],&tmp,0);
1503                 if (*tmp) {
1504                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1505                         return;
1506                 }
1507         } else
1508                 count = 1;
1509
1510         if (argc > 2) {
1511                 goal = strtol(argv[2], &tmp, 0);
1512                 if (*tmp) {
1513                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1514                         return;
1515                 }
1516         }
1517         else
1518                 goal = current_fs->super->s_first_data_block;
1519
1520         printf("Free blocks found: ");
1521         free_blk = goal - 1;
1522         while (count-- > 0) {
1523                 retval = ext2fs_new_block2(current_fs, free_blk + 1, 0,
1524                                            &free_blk);
1525                 if (first_free) {
1526                         if (first_free == free_blk)
1527                                 break;
1528                 } else
1529                         first_free = free_blk;
1530                 if (retval) {
1531                         com_err("ext2fs_new_block", retval, 0);
1532                         return;
1533                 } else
1534                         printf("%llu ", free_blk);
1535         }
1536         printf("\n");
1537 }
1538
1539 void do_find_free_inode(int argc, char *argv[])
1540 {
1541         ext2_ino_t      free_inode, dir;
1542         int             mode;
1543         int             retval;
1544         char            *tmp;
1545
1546         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1547                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1548                 return;
1549         }
1550         if (check_fs_open(argv[0]))
1551                 return;
1552
1553         if (argc > 1) {
1554                 dir = strtol(argv[1], &tmp, 0);
1555                 if (*tmp) {
1556                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1557                         return;
1558                 }
1559         }
1560         else
1561                 dir = root;
1562         if (argc > 2) {
1563                 mode = strtol(argv[2], &tmp, 0);
1564                 if (*tmp) {
1565                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1566                         return;
1567                 }
1568         } else
1569                 mode = 010755;
1570
1571         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1572         if (retval)
1573                 com_err("ext2fs_new_inode", retval, 0);
1574         else
1575                 printf("Free inode found: %u\n", free_inode);
1576 }
1577
1578 #ifndef READ_ONLY
1579 static errcode_t copy_file(int fd, ext2_ino_t newfile, int bufsize,
1580                            int make_holes)
1581 {
1582         ext2_file_t     e2_file;
1583         errcode_t       retval, close_ret;
1584         int             got;
1585         unsigned int    written;
1586         char            *buf;
1587         char            *ptr;
1588         char            *zero_buf;
1589         int             cmp;
1590
1591         retval = ext2fs_file_open(current_fs, newfile,
1592                                   EXT2_FILE_WRITE, &e2_file);
1593         if (retval)
1594                 return retval;
1595
1596         retval = ext2fs_get_mem(bufsize, &buf);
1597         if (retval) {
1598                 com_err("copy_file", retval, "can't allocate buffer\n");
1599                 goto out_close;
1600         }
1601
1602         /* This is used for checking whether the whole block is zero */
1603         retval = ext2fs_get_memzero(bufsize, &zero_buf);
1604         if (retval) {
1605                 com_err("copy_file", retval, "can't allocate zero buffer\n");
1606                 goto out_free_buf;
1607         }
1608
1609         while (1) {
1610                 got = read(fd, buf, bufsize);
1611                 if (got == 0)
1612                         break;
1613                 if (got < 0) {
1614                         retval = errno;
1615                         goto fail;
1616                 }
1617                 ptr = buf;
1618
1619                 /* Sparse copy */
1620                 if (make_holes) {
1621                         /* Check whether all is zero */
1622                         cmp = memcmp(ptr, zero_buf, got);
1623                         if (cmp == 0) {
1624                                  /* The whole block is zero, make a hole */
1625                                 retval = ext2fs_file_lseek(e2_file, got,
1626                                                            EXT2_SEEK_CUR, NULL);
1627                                 if (retval)
1628                                         goto fail;
1629                                 got = 0;
1630                         }
1631                 }
1632
1633                 /* Normal copy */
1634                 while (got > 0) {
1635                         retval = ext2fs_file_write(e2_file, ptr,
1636                                                    got, &written);
1637                         if (retval)
1638                                 goto fail;
1639
1640                         got -= written;
1641                         ptr += written;
1642                 }
1643         }
1644
1645 fail:
1646         ext2fs_free_mem(&zero_buf);
1647 out_free_buf:
1648         ext2fs_free_mem(&buf);
1649 out_close:
1650         close_ret = ext2fs_file_close(e2_file);
1651         if (retval == 0)
1652                 retval = close_ret;
1653         return retval;
1654 }
1655
1656
1657 void do_write(int argc, char *argv[])
1658 {
1659         int             fd;
1660         struct stat     statbuf;
1661         ext2_ino_t      newfile;
1662         errcode_t       retval;
1663         struct ext2_inode inode;
1664         int             bufsize = IO_BUFSIZE;
1665         int             make_holes = 0;
1666
1667         if (common_args_process(argc, argv, 3, 3, "write",
1668                                 "<native file> <new file>", CHECK_FS_RW))
1669                 return;
1670
1671         fd = open(argv[1], O_RDONLY);
1672         if (fd < 0) {
1673                 com_err(argv[1], errno, 0);
1674                 return;
1675         }
1676         if (fstat(fd, &statbuf) < 0) {
1677                 com_err(argv[1], errno, 0);
1678                 close(fd);
1679                 return;
1680         }
1681
1682         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1683         if (retval == 0) {
1684                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1685                 close(fd);
1686                 return;
1687         }
1688
1689         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1690         if (retval) {
1691                 com_err(argv[0], retval, 0);
1692                 close(fd);
1693                 return;
1694         }
1695         printf("Allocated inode: %u\n", newfile);
1696         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1697                              EXT2_FT_REG_FILE);
1698         if (retval == EXT2_ET_DIR_NO_SPACE) {
1699                 retval = ext2fs_expand_dir(current_fs, cwd);
1700                 if (retval) {
1701                         com_err(argv[0], retval, "while expanding directory");
1702                         close(fd);
1703                         return;
1704                 }
1705                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1706                                      EXT2_FT_REG_FILE);
1707         }
1708         if (retval) {
1709                 com_err(argv[2], retval, 0);
1710                 close(fd);
1711                 return;
1712         }
1713         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1714                 com_err(argv[0], 0, "Warning: inode already set");
1715         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1716         memset(&inode, 0, sizeof(inode));
1717         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1718         inode.i_atime = inode.i_ctime = inode.i_mtime =
1719                 current_fs->now ? current_fs->now : time(0);
1720         inode.i_links_count = 1;
1721         inode.i_size = statbuf.st_size;
1722         if (current_fs->super->s_feature_incompat &
1723             EXT3_FEATURE_INCOMPAT_EXTENTS) {
1724                 int i;
1725                 struct ext3_extent_header *eh;
1726
1727                 eh = (struct ext3_extent_header *) &inode.i_block[0];
1728                 eh->eh_depth = 0;
1729                 eh->eh_entries = 0;
1730                 eh->eh_magic = ext2fs_cpu_to_le16(EXT3_EXT_MAGIC);
1731                 i = (sizeof(inode.i_block) - sizeof(*eh)) /
1732                         sizeof(struct ext3_extent);
1733                 eh->eh_max = ext2fs_cpu_to_le16(i);
1734                 inode.i_flags |= EXT4_EXTENTS_FL;
1735         }
1736         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1737                 close(fd);
1738                 return;
1739         }
1740         if (LINUX_S_ISREG(inode.i_mode)) {
1741                 if (statbuf.st_blocks < statbuf.st_size / S_BLKSIZE) {
1742                         make_holes = 1;
1743                         /*
1744                          * Use I/O blocksize as buffer size when
1745                          * copying sparse files.
1746                          */
1747                         bufsize = statbuf.st_blksize;
1748                 }
1749                 retval = copy_file(fd, newfile, bufsize, make_holes);
1750                 if (retval)
1751                         com_err("copy_file", retval, 0);
1752         }
1753         close(fd);
1754 }
1755
1756 void do_mknod(int argc, char *argv[])
1757 {
1758         unsigned long   mode, major, minor;
1759         ext2_ino_t      newfile;
1760         errcode_t       retval;
1761         struct ext2_inode inode;
1762         int             filetype, nr;
1763
1764         if (check_fs_open(argv[0]))
1765                 return;
1766         if (argc < 3 || argv[2][1]) {
1767         usage:
1768                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1769                 return;
1770         }
1771         mode = minor = major = 0;
1772         switch (argv[2][0]) {
1773                 case 'p':
1774                         mode = LINUX_S_IFIFO;
1775                         filetype = EXT2_FT_FIFO;
1776                         nr = 3;
1777                         break;
1778                 case 'c':
1779                         mode = LINUX_S_IFCHR;
1780                         filetype = EXT2_FT_CHRDEV;
1781                         nr = 5;
1782                         break;
1783                 case 'b':
1784                         mode = LINUX_S_IFBLK;
1785                         filetype = EXT2_FT_BLKDEV;
1786                         nr = 5;
1787                         break;
1788                 default:
1789                         filetype = 0;
1790                         nr = 0;
1791         }
1792         if (nr == 5) {
1793                 major = strtoul(argv[3], argv+3, 0);
1794                 minor = strtoul(argv[4], argv+4, 0);
1795                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1796                         nr = 0;
1797         }
1798         if (argc != nr)
1799                 goto usage;
1800         if (check_fs_read_write(argv[0]))
1801                 return;
1802         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1803         if (retval) {
1804                 com_err(argv[0], retval, 0);
1805                 return;
1806         }
1807         printf("Allocated inode: %u\n", newfile);
1808         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1809         if (retval == EXT2_ET_DIR_NO_SPACE) {
1810                 retval = ext2fs_expand_dir(current_fs, cwd);
1811                 if (retval) {
1812                         com_err(argv[0], retval, "while expanding directory");
1813                         return;
1814                 }
1815                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1816                                      filetype);
1817         }
1818         if (retval) {
1819                 com_err(argv[1], retval, 0);
1820                 return;
1821         }
1822         if (ext2fs_test_inode_bitmap2(current_fs->inode_map,newfile))
1823                 com_err(argv[0], 0, "Warning: inode already set");
1824         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1825         memset(&inode, 0, sizeof(inode));
1826         inode.i_mode = mode;
1827         inode.i_atime = inode.i_ctime = inode.i_mtime =
1828                 current_fs->now ? current_fs->now : time(0);
1829         if ((major < 256) && (minor < 256)) {
1830                 inode.i_block[0] = major*256+minor;
1831                 inode.i_block[1] = 0;
1832         } else {
1833                 inode.i_block[0] = 0;
1834                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1835         }
1836         inode.i_links_count = 1;
1837         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1838                 return;
1839 }
1840
1841 void do_mkdir(int argc, char *argv[])
1842 {
1843         char    *cp;
1844         ext2_ino_t      parent;
1845         char    *name;
1846         errcode_t retval;
1847
1848         if (common_args_process(argc, argv, 2, 2, "mkdir",
1849                                 "<filename>", CHECK_FS_RW))
1850                 return;
1851
1852         cp = strrchr(argv[1], '/');
1853         if (cp) {
1854                 *cp = 0;
1855                 parent = string_to_inode(argv[1]);
1856                 if (!parent) {
1857                         com_err(argv[1], ENOENT, 0);
1858                         return;
1859                 }
1860                 name = cp+1;
1861         } else {
1862                 parent = cwd;
1863                 name = argv[1];
1864         }
1865
1866 try_again:
1867         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1868         if (retval == EXT2_ET_DIR_NO_SPACE) {
1869                 retval = ext2fs_expand_dir(current_fs, parent);
1870                 if (retval) {
1871                         com_err(argv[0], retval, "while expanding directory");
1872                         return;
1873                 }
1874                 goto try_again;
1875         }
1876         if (retval) {
1877                 com_err("ext2fs_mkdir", retval, 0);
1878                 return;
1879         }
1880
1881 }
1882
1883 static int release_blocks_proc(ext2_filsys fs, blk64_t *blocknr,
1884                                e2_blkcnt_t blockcnt EXT2FS_ATTR((unused)),
1885                                blk64_t ref_block EXT2FS_ATTR((unused)),
1886                                int ref_offset EXT2FS_ATTR((unused)),
1887                                void *private EXT2FS_ATTR((unused)))
1888 {
1889         blk64_t block;
1890
1891         block = *blocknr;
1892         ext2fs_block_alloc_stats2(fs, block, -1);
1893         return 0;
1894 }
1895
1896 static void kill_file_by_inode(ext2_ino_t inode)
1897 {
1898         struct ext2_inode inode_buf;
1899
1900         if (debugfs_read_inode(inode, &inode_buf, 0))
1901                 return;
1902         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1903         if (debugfs_write_inode(inode, &inode_buf, 0))
1904                 return;
1905         if (!ext2fs_inode_has_valid_blocks2(current_fs, &inode_buf))
1906                 return;
1907
1908         ext2fs_block_iterate3(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1909                               release_blocks_proc, NULL);
1910         printf("\n");
1911         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1912                                   LINUX_S_ISDIR(inode_buf.i_mode));
1913 }
1914
1915
1916 void do_kill_file(int argc, char *argv[])
1917 {
1918         ext2_ino_t inode_num;
1919
1920         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1921                 return;
1922
1923         kill_file_by_inode(inode_num);
1924 }
1925
1926 void do_rm(int argc, char *argv[])
1927 {
1928         int retval;
1929         ext2_ino_t inode_num;
1930         struct ext2_inode inode;
1931
1932         if (common_args_process(argc, argv, 2, 2, "rm",
1933                                 "<filename>", CHECK_FS_RW))
1934                 return;
1935
1936         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1937         if (retval) {
1938                 com_err(argv[0], retval, "while trying to resolve filename");
1939                 return;
1940         }
1941
1942         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1943                 return;
1944
1945         if (LINUX_S_ISDIR(inode.i_mode)) {
1946                 com_err(argv[0], 0, "file is a directory");
1947                 return;
1948         }
1949
1950         --inode.i_links_count;
1951         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1952                 return;
1953
1954         unlink_file_by_name(argv[1]);
1955         if (inode.i_links_count == 0)
1956                 kill_file_by_inode(inode_num);
1957 }
1958
1959 struct rd_struct {
1960         ext2_ino_t      parent;
1961         int             empty;
1962 };
1963
1964 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1965                       int       entry EXT2FS_ATTR((unused)),
1966                       struct ext2_dir_entry *dirent,
1967                       int       offset EXT2FS_ATTR((unused)),
1968                       int       blocksize EXT2FS_ATTR((unused)),
1969                       char      *buf EXT2FS_ATTR((unused)),
1970                       void      *private)
1971 {
1972         struct rd_struct *rds = (struct rd_struct *) private;
1973
1974         if (dirent->inode == 0)
1975                 return 0;
1976         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1977                 return 0;
1978         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1979             (dirent->name[1] == '.')) {
1980                 rds->parent = dirent->inode;
1981                 return 0;
1982         }
1983         rds->empty = 0;
1984         return 0;
1985 }
1986
1987 void do_rmdir(int argc, char *argv[])
1988 {
1989         int retval;
1990         ext2_ino_t inode_num;
1991         struct ext2_inode inode;
1992         struct rd_struct rds;
1993
1994         if (common_args_process(argc, argv, 2, 2, "rmdir",
1995                                 "<filename>", CHECK_FS_RW))
1996                 return;
1997
1998         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1999         if (retval) {
2000                 com_err(argv[0], retval, "while trying to resolve filename");
2001                 return;
2002         }
2003
2004         if (debugfs_read_inode(inode_num, &inode, argv[0]))
2005                 return;
2006
2007         if (!LINUX_S_ISDIR(inode.i_mode)) {
2008                 com_err(argv[0], 0, "file is not a directory");
2009                 return;
2010         }
2011
2012         rds.parent = 0;
2013         rds.empty = 1;
2014
2015         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
2016                                     0, rmdir_proc, &rds);
2017         if (retval) {
2018                 com_err(argv[0], retval, "while iterating over directory");
2019                 return;
2020         }
2021         if (rds.empty == 0) {
2022                 com_err(argv[0], 0, "directory not empty");
2023                 return;
2024         }
2025
2026         inode.i_links_count = 0;
2027         if (debugfs_write_inode(inode_num, &inode, argv[0]))
2028                 return;
2029
2030         unlink_file_by_name(argv[1]);
2031         kill_file_by_inode(inode_num);
2032
2033         if (rds.parent) {
2034                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
2035                         return;
2036                 if (inode.i_links_count > 1)
2037                         inode.i_links_count--;
2038                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
2039                         return;
2040         }
2041 }
2042 #endif /* READ_ONLY */
2043
2044 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
2045                             char *argv[] EXT2FS_ATTR((unused)))
2046 {
2047         if (current_fs)
2048                 printf("Open mode: read-%s\n",
2049                        current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
2050         printf("Filesystem in use: %s\n",
2051                current_fs ? current_fs->device_name : "--none--");
2052 }
2053
2054 #ifndef READ_ONLY
2055 void do_expand_dir(int argc, char *argv[])
2056 {
2057         ext2_ino_t inode;
2058         int retval;
2059
2060         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
2061                 return;
2062
2063         retval = ext2fs_expand_dir(current_fs, inode);
2064         if (retval)
2065                 com_err("ext2fs_expand_dir", retval, 0);
2066         return;
2067 }
2068
2069 void do_features(int argc, char *argv[])
2070 {
2071         int     i;
2072
2073         if (check_fs_open(argv[0]))
2074                 return;
2075
2076         if ((argc != 1) && check_fs_read_write(argv[0]))
2077                 return;
2078         for (i=1; i < argc; i++) {
2079                 if (e2p_edit_feature(argv[i],
2080                                      &current_fs->super->s_feature_compat, 0))
2081                         com_err(argv[0], 0, "Unknown feature: %s\n",
2082                                 argv[i]);
2083                 else
2084                         ext2fs_mark_super_dirty(current_fs);
2085         }
2086         print_features(current_fs->super, stdout);
2087 }
2088 #endif /* READ_ONLY */
2089
2090 void do_bmap(int argc, char *argv[])
2091 {
2092         ext2_ino_t      ino;
2093         blk64_t         blk, pblk;
2094         int             err;
2095         errcode_t       errcode;
2096
2097         if (common_args_process(argc, argv, 3, 3, argv[0],
2098                                 "<file> logical_blk", 0))
2099                 return;
2100
2101         ino = string_to_inode(argv[1]);
2102         if (!ino)
2103                 return;
2104         err = strtoblk(argv[0], argv[2], "logical block", &blk);
2105         if (err)
2106                 return;
2107
2108         errcode = ext2fs_bmap2(current_fs, ino, 0, 0, 0, blk, 0, &pblk);
2109         if (errcode) {
2110                 com_err(argv[0], errcode,
2111                         "while mapping logical block %llu\n", blk);
2112                 return;
2113         }
2114         printf("%llu\n", pblk);
2115 }
2116
2117 void do_imap(int argc, char *argv[])
2118 {
2119         ext2_ino_t      ino;
2120         unsigned long   group, block, block_nr, offset;
2121
2122         if (common_args_process(argc, argv, 2, 2, argv[0],
2123                                 "<file>", 0))
2124                 return;
2125         ino = string_to_inode(argv[1]);
2126         if (!ino)
2127                 return;
2128
2129         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
2130         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
2131                 EXT2_INODE_SIZE(current_fs->super);
2132         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
2133         if (!ext2fs_inode_table_loc(current_fs, (unsigned)group)) {
2134                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
2135                         group);
2136                 return;
2137         }
2138         block_nr = ext2fs_inode_table_loc(current_fs, (unsigned)group) +
2139                 block;
2140         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
2141
2142         printf("Inode %d is part of block group %lu\n"
2143                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
2144                block_nr, offset);
2145
2146 }
2147
2148 void do_idump(int argc, char *argv[])
2149 {
2150         ext2_ino_t      ino;
2151         char            *buf;
2152         errcode_t       err;
2153         int             isize;
2154
2155         if (common_args_process(argc, argv, 2, 2, argv[0],
2156                                 "<file>", 0))
2157                 return;
2158         ino = string_to_inode(argv[1]);
2159         if (!ino)
2160                 return;
2161
2162         isize = EXT2_INODE_SIZE(current_fs->super);
2163         err = ext2fs_get_mem(isize, &buf);
2164         if (err) {
2165                 com_err(argv[0], err, "while allocating memory");
2166                 return;
2167         }
2168
2169         err = ext2fs_read_inode_full(current_fs, ino,
2170                                      (struct ext2_inode *)buf, isize);
2171         if (err) {
2172                 com_err(argv[0], err, "while reading inode %d", ino);
2173                 goto err;
2174         }
2175
2176         do_byte_hexdump(stdout, buf, isize);
2177 err:
2178         ext2fs_free_mem(&buf);
2179 }
2180
2181 #ifndef READ_ONLY
2182 void do_set_current_time(int argc, char *argv[])
2183 {
2184         time_t now;
2185
2186         if (common_args_process(argc, argv, 2, 2, argv[0],
2187                                 "<time>", 0))
2188                 return;
2189
2190         now = string_to_time(argv[1]);
2191         if (now == ((time_t) -1)) {
2192                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
2193                         argv[1]);
2194                 return;
2195
2196         } else {
2197                 printf("Setting current time to %s\n", time_to_string(now));
2198                 current_fs->now = now;
2199         }
2200 }
2201 #endif /* READ_ONLY */
2202
2203 static int find_supp_feature(__u32 *supp, int feature_type, char *name)
2204 {
2205         int compat, bit, ret;
2206         unsigned int feature_mask;
2207
2208         if (name) {
2209                 if (feature_type == E2P_FS_FEATURE)
2210                         ret = e2p_string2feature(name, &compat, &feature_mask);
2211                 else
2212                         ret = e2p_jrnl_string2feature(name, &compat,
2213                                                       &feature_mask);
2214                 if (ret)
2215                         return ret;
2216
2217                 if (!(supp[compat] & feature_mask))
2218                         return 1;
2219         } else {
2220                 for (compat = 0; compat < 3; compat++) {
2221                         for (bit = 0, feature_mask = 1; bit < 32;
2222                              bit++, feature_mask <<= 1) {
2223                                 if (supp[compat] & feature_mask) {
2224                                         if (feature_type == E2P_FS_FEATURE)
2225                                                 fprintf(stdout, " %s",
2226                                                 e2p_feature2string(compat,
2227                                                 feature_mask));
2228                                         else
2229                                                 fprintf(stdout, " %s",
2230                                                 e2p_jrnl_feature2string(compat,
2231                                                 feature_mask));
2232                                 }
2233                         }
2234                 }
2235                 fprintf(stdout, "\n");
2236         }
2237
2238         return 0;
2239 }
2240
2241 void do_supported_features(int argc, char *argv[])
2242 {
2243         int     ret;
2244         __u32   supp[3] = { EXT2_LIB_FEATURE_COMPAT_SUPP,
2245                             EXT2_LIB_FEATURE_INCOMPAT_SUPP,
2246                             EXT2_LIB_FEATURE_RO_COMPAT_SUPP };
2247         __u32   jrnl_supp[3] = { JFS_KNOWN_COMPAT_FEATURES,
2248                                  JFS_KNOWN_INCOMPAT_FEATURES,
2249                                  JFS_KNOWN_ROCOMPAT_FEATURES };
2250
2251         if (argc > 1) {
2252                 ret = find_supp_feature(supp, E2P_FS_FEATURE, argv[1]);
2253                 if (ret) {
2254                         ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE,
2255                                                 argv[1]);
2256                 }
2257                 if (ret)
2258                         com_err(argv[0], 0, "Unknown feature: %s\n", argv[1]);
2259                 else
2260                         fprintf(stdout, "Supported feature: %s\n", argv[1]);
2261         } else {
2262                 fprintf(stdout, "Supported features:");
2263                 ret = find_supp_feature(supp, E2P_FS_FEATURE, NULL);
2264                 ret = find_supp_feature(jrnl_supp, E2P_JOURNAL_FEATURE, NULL);
2265         }
2266 }
2267
2268 #ifndef READ_ONLY
2269 void do_punch(int argc, char *argv[])
2270 {
2271         ext2_ino_t      ino;
2272         blk64_t         start, end;
2273         int             err;
2274         errcode_t       errcode;
2275
2276         if (common_args_process(argc, argv, 3, 4, argv[0],
2277                                 "<file> start_blk [end_blk]",
2278                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
2279                 return;
2280
2281         ino = string_to_inode(argv[1]);
2282         if (!ino)
2283                 return;
2284         err = strtoblk(argv[0], argv[2], "logical block", &start);
2285         if (err)
2286                 return;
2287         if (argc == 4) {
2288                 err = strtoblk(argv[0], argv[3], "logical block", &end);
2289                 if (err)
2290                         return;
2291         } else
2292                 end = ~0;
2293
2294         errcode = ext2fs_punch(current_fs, ino, 0, 0, start, end);
2295
2296         if (errcode) {
2297                 com_err(argv[0], errcode,
2298                         "while truncating inode %u from %llu to %llu\n", ino,
2299                         (unsigned long long) start, (unsigned long long) end);
2300                 return;
2301         }
2302 }
2303 #endif /* READ_ONLY */
2304
2305 void do_symlink(int argc, char *argv[])
2306 {
2307         char            *cp;
2308         ext2_ino_t      parent;
2309         char            *name, *target;
2310         errcode_t       retval;
2311
2312         if (common_args_process(argc, argv, 3, 3, "symlink",
2313                                 "<filename> <target>", CHECK_FS_RW))
2314                 return;
2315
2316         cp = strrchr(argv[1], '/');
2317         if (cp) {
2318                 *cp = 0;
2319                 parent = string_to_inode(argv[1]);
2320                 if (!parent) {
2321                         com_err(argv[1], ENOENT, 0);
2322                         return;
2323                 }
2324                 name = cp+1;
2325         } else {
2326                 parent = cwd;
2327                 name = argv[1];
2328         }
2329         target = argv[2];
2330
2331 try_again:
2332         retval = ext2fs_symlink(current_fs, parent, 0, name, target);
2333         if (retval == EXT2_ET_DIR_NO_SPACE) {
2334                 retval = ext2fs_expand_dir(current_fs, parent);
2335                 if (retval) {
2336                         com_err(argv[0], retval, "while expanding directory");
2337                         return;
2338                 }
2339                 goto try_again;
2340         }
2341         if (retval) {
2342                 com_err("ext2fs_symlink", retval, 0);
2343                 return;
2344         }
2345
2346 }
2347
2348 void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[])
2349 {
2350         struct mmp_struct *mmp_s;
2351         time_t t;
2352         errcode_t retval = 0;
2353
2354         if (check_fs_open(argv[0]))
2355                 return;
2356
2357         if (current_fs->mmp_buf == NULL) {
2358                 retval = ext2fs_get_mem(current_fs->blocksize,
2359                                         &current_fs->mmp_buf);
2360                 if (retval) {
2361                         com_err(argv[0], retval, "allocating MMP buffer.\n");
2362                         return;
2363                 }
2364         }
2365
2366         mmp_s = current_fs->mmp_buf;
2367
2368         retval = ext2fs_mmp_read(current_fs, current_fs->super->s_mmp_block,
2369                                  current_fs->mmp_buf);
2370         if (retval) {
2371                 com_err(argv[0], retval, "reading MMP block.\n");
2372                 return;
2373         }
2374
2375         t = mmp_s->mmp_time;
2376         fprintf(stdout, "block_number: %llu\n", current_fs->super->s_mmp_block);
2377         fprintf(stdout, "update_interval: %d\n",
2378                 current_fs->super->s_mmp_update_interval);
2379         fprintf(stdout, "check_interval: %d\n", mmp_s->mmp_check_interval);
2380         fprintf(stdout, "sequence: %08x\n", mmp_s->mmp_seq);
2381         fprintf(stdout, "time: %lld -- %s", mmp_s->mmp_time, ctime(&t));
2382         fprintf(stdout, "node_name: %s\n", mmp_s->mmp_nodename);
2383         fprintf(stdout, "device_name: %s\n", mmp_s->mmp_bdevname);
2384         fprintf(stdout, "magic: 0x%x\n", mmp_s->mmp_magic);
2385 }
2386
2387 static int source_file(const char *cmd_file, int ss_idx)
2388 {
2389         FILE            *f;
2390         char            buf[BUFSIZ];
2391         char            *cp;
2392         int             exit_status = 0;
2393         int             retval;
2394
2395         if (strcmp(cmd_file, "-") == 0)
2396                 f = stdin;
2397         else {
2398                 f = fopen(cmd_file, "r");
2399                 if (!f) {
2400                         perror(cmd_file);
2401                         exit(1);
2402                 }
2403         }
2404         fflush(stdout);
2405         fflush(stderr);
2406         setbuf(stdout, NULL);
2407         setbuf(stderr, NULL);
2408         while (!feof(f)) {
2409                 if (fgets(buf, sizeof(buf), f) == NULL)
2410                         break;
2411                 cp = strchr(buf, '\n');
2412                 if (cp)
2413                         *cp = 0;
2414                 cp = strchr(buf, '\r');
2415                 if (cp)
2416                         *cp = 0;
2417                 printf("debugfs: %s\n", buf);
2418                 retval = ss_execute_line(ss_idx, buf);
2419                 if (retval) {
2420                         ss_perror(ss_idx, retval, buf);
2421                         exit_status++;
2422                 }
2423         }
2424         if (f != stdin)
2425                 fclose(f);
2426         return exit_status;
2427 }
2428
2429 int main(int argc, char **argv)
2430 {
2431         int             retval;
2432         const char      *usage =
2433                 "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] "
2434                 "[-R request] [-V] ["
2435 #ifndef READ_ONLY
2436                 "[-w] "
2437 #endif
2438                 "[-c] device]";
2439         int             c;
2440         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
2441         char            *request = 0;
2442         int             exit_status = 0;
2443         char            *cmd_file = 0;
2444         blk64_t         superblock = 0;
2445         blk64_t         blocksize = 0;
2446         int             catastrophic = 0;
2447         char            *data_filename = 0;
2448 #ifdef READ_ONLY
2449         const char      *opt_string = "icR:f:b:s:Vd:D";
2450 #else
2451         const char      *opt_string = "iwcR:f:b:s:Vd:D";
2452 #endif
2453
2454         if (debug_prog_name == 0)
2455 #ifdef READ_ONLY
2456                 debug_prog_name = "rdebugfs";
2457 #else
2458                 debug_prog_name = "debugfs";
2459 #endif
2460         add_error_table(&et_ext2_error_table);
2461         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
2462                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
2463
2464         while ((c = getopt (argc, argv, opt_string)) != EOF) {
2465                 switch (c) {
2466                 case 'R':
2467                         request = optarg;
2468                         break;
2469                 case 'f':
2470                         cmd_file = optarg;
2471                         break;
2472                 case 'd':
2473                         data_filename = optarg;
2474                         break;
2475                 case 'i':
2476                         open_flags |= EXT2_FLAG_IMAGE_FILE;
2477                         break;
2478 #ifndef READ_ONLY
2479                 case 'w':
2480                         open_flags |= EXT2_FLAG_RW;
2481                         break;
2482 #endif
2483                 case 'D':
2484                         open_flags |= EXT2_FLAG_DIRECT_IO;
2485                         break;
2486                 case 'b':
2487                         blocksize = parse_ulong(optarg, argv[0],
2488                                                 "block size", 0);
2489                         break;
2490                 case 's':
2491                         retval = strtoblk(argv[0], optarg,
2492                                           "superblock block number",
2493                                           &superblock);
2494                         if (retval)
2495                                 return 1;
2496                         break;
2497                 case 'c':
2498                         catastrophic = 1;
2499                         break;
2500                 case 'V':
2501                         /* Print version number and exit */
2502                         fprintf(stderr, "\tUsing %s\n",
2503                                 error_message(EXT2_ET_BASE));
2504                         exit(0);
2505                 default:
2506                         com_err(argv[0], 0, usage, debug_prog_name);
2507                         return 1;
2508                 }
2509         }
2510         if (optind < argc)
2511                 open_filesystem(argv[optind], open_flags,
2512                                 superblock, blocksize, catastrophic,
2513                                 data_filename);
2514
2515         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
2516                                        &debug_cmds, &retval);
2517         if (retval) {
2518                 ss_perror(sci_idx, retval, "creating invocation");
2519                 exit(1);
2520         }
2521         ss_get_readline(sci_idx);
2522
2523         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
2524         if (retval) {
2525                 ss_perror(sci_idx, retval, "adding standard requests");
2526                 exit (1);
2527         }
2528         if (extra_cmds)
2529                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
2530         if (retval) {
2531                 ss_perror(sci_idx, retval, "adding extra requests");
2532                 exit (1);
2533         }
2534         if (request) {
2535                 retval = 0;
2536                 retval = ss_execute_line(sci_idx, request);
2537                 if (retval) {
2538                         ss_perror(sci_idx, retval, request);
2539                         exit_status++;
2540                 }
2541         } else if (cmd_file) {
2542                 exit_status = source_file(cmd_file, sci_idx);
2543         } else {
2544                 ss_listen(sci_idx);
2545         }
2546
2547         ss_delete_invocation(sci_idx);
2548
2549         if (current_fs)
2550                 close_filesystem();
2551
2552         remove_error_table(&et_ext2_error_table);
2553         return exit_status;
2554 }