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 <stdio.h>
  12 #include <unistd.h>
  13 #include <stdlib.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #ifdef HAVE_GETOPT_H
  18 #include <getopt.h>
  19 #else
  20 extern int optind;
  21 extern char *optarg;
  22 #endif
  23 #ifdef HAVE_ERRNO_H
  24 #include <errno.h>
  25 #endif
  26 #include <fcntl.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29
  30 #include "et/com_err.h"
  31 #include "ss/ss.h"
  32 #include "debugfs.h"
  33 #include "uuid/uuid.h"
  34 #include "e2p/e2p.h"
  35
  36 #include <ext2fs/ext2_ext_attr.h>
  37
  38 #include "../version.h"
  39
  40 extern ss_request_table debug_cmds;
  41 ss_request_table *extra_cmds;
  42 const char *debug_prog_name;
  43
  44 ext2_filsys     current_fs = NULL;
  45 ext2_ino_t      root, cwd;
  46
  47 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  48                             blk_t blocksize, int catastrophic,
  49                             char *data_filename)
  50 {
  51         int     retval;
  52         io_channel data_io = 0;
  53
  54         if (superblock != 0 && blocksize == 0) {
  55                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  56                 current_fs = NULL;
  57                 return;
  58         }
  59
  60         if (data_filename) {
  61                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  62                         com_err(device, 0,
  63                                 "The -d option is only valid when reading an e2image file");
  64                         current_fs = NULL;
  65                         return;
  66                 }
  67                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  68                 if (retval) {
  69                         com_err(data_filename, 0, "while opening data source");
  70                         current_fs = NULL;
  71                         return;
  72                 }
  73         }
  74
  75         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  76                 com_err(device, 0,
  77                         "opening read-only because of catastrophic mode");
  78                 open_flags &= ~EXT2_FLAG_RW;
  79         }
  80
  81         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  82                              unix_io_manager, &current_fs);
  83         if (retval) {
  84                 com_err(device, retval, "while opening filesystem");
  85                 current_fs = NULL;
  86                 return;
  87         }
  88
  89         if (catastrophic)
  90                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  91         else {
  92                 retval = ext2fs_read_inode_bitmap(current_fs);
  93                 if (retval) {
  94                         com_err(device, retval, "while reading inode bitmap");
  95                         goto errout;
  96                 }
  97                 retval = ext2fs_read_block_bitmap(current_fs);
  98                 if (retval) {
  99                         com_err(device, retval, "while reading block bitmap");
 100                         goto errout;
 101                 }
 102         }
 103
 104         if (data_io) {
 105                 retval = ext2fs_set_data_io(current_fs, data_io);
 106                 if (retval) {
 107                         com_err(device, retval,
 108                                 "while setting data source");
 109                         goto errout;
 110                 }
 111         }
 112
 113         root = cwd = EXT2_ROOT_INO;
 114         return;
 115
 116 errout:
 117         retval = ext2fs_close(current_fs);
 118         if (retval)
 119                 com_err(device, retval, "while trying to close filesystem");
 120         current_fs = NULL;
 121 }
 122
 123 void do_open_filesys(int argc, char **argv)
 124 {
 125         int     c, err;
 126         int     catastrophic = 0;
 127         blk_t   superblock = 0;
 128         blk_t   blocksize = 0;
 129         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
 130         char    *data_filename = 0;
 131
 132         reset_getopt();
 133         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
 134                 switch (c) {
 135                 case 'i':
 136                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 137                         break;
 138                 case 'w':
 139                         open_flags |= EXT2_FLAG_RW;
 140                         break;
 141                 case 'f':
 142                         open_flags |= EXT2_FLAG_FORCE;
 143                         break;
 144                 case 'e':
 145                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 146                         break;
 147                 case 'c':
 148                         catastrophic = 1;
 149                         break;
 150                 case 'd':
 151                         data_filename = optarg;
 152                         break;
 153                 case 'b':
 154                         blocksize = parse_ulong(optarg, argv[0],
 155                                                 "block size", &err);
 156                         if (err)
 157                                 return;
 158                         break;
 159                 case 's':
 160                         superblock = parse_ulong(optarg, argv[0],
 161                                                  "superblock number", &err);
 162                         if (err)
 163                                 return;
 164                         break;
 165                 default:
 166                         goto print_usage;
 167                 }
 168         }
 169         if (optind != argc-1) {
 170                 goto print_usage;
 171         }
 172         if (check_fs_not_open(argv[0]))
 173                 return;
 174         open_filesystem(argv[optind], open_flags,
 175                         superblock, blocksize, catastrophic,
 176                         data_filename);
 177         return;
 178
 179 print_usage:
 180         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 181                 "[-c] [-w] <device>\n", argv[0]);
 182 }
 183
 184 void do_lcd(int argc, char **argv)
 185 {
 186         if (argc != 2) {
 187                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 188                 return;
 189         }
 190
 191         if (chdir(argv[1]) == -1) {
 192                 com_err(argv[0], errno,
 193                         "while trying to change native directory to %s",
 194                         argv[1]);
 195                 return;
 196         }
 197 }
 198
 199 static void close_filesystem(NOARGS)
 200 {
 201         int     retval;
 202
 203         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 204                 retval = ext2fs_write_inode_bitmap(current_fs);
 205                 if (retval)
 206                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 207         }
 208         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 209                 retval = ext2fs_write_block_bitmap(current_fs);
 210                 if (retval)
 211                         com_err("ext2fs_write_block_bitmap", retval, 0);
 212         }
 213         retval = ext2fs_close(current_fs);
 214         if (retval)
 215                 com_err("ext2fs_close", retval, 0);
 216         current_fs = NULL;
 217         return;
 218 }
 219
 220 void do_close_filesys(int argc, char **argv)
 221 {
 222         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 223                 return;
 224         close_filesystem();
 225 }
 226
 227 void do_init_filesys(int argc, char **argv)
 228 {
 229         struct ext2_super_block param;
 230         errcode_t       retval;
 231         int             err;
 232
 233         if (common_args_process(argc, argv, 3, 3, "initialize",
 234                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 235                 return;
 236
 237         memset(&param, 0, sizeof(struct ext2_super_block));
 238         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 239                                            "blocks count", &err);
 240         if (err)
 241                 return;
 242         retval = ext2fs_initialize(argv[1], 0, &param,
 243                                    unix_io_manager, &current_fs);
 244         if (retval) {
 245                 com_err(argv[1], retval, "while initializing filesystem");
 246                 current_fs = NULL;
 247                 return;
 248         }
 249         root = cwd = EXT2_ROOT_INO;
 250         return;
 251 }
 252
 253 static void print_features(struct ext2_super_block * s, FILE *f)
 254 {
 255         int     i, j, printed=0;
 256         __u32   *mask = &s->s_feature_compat, m;
 257
 258         fputs("Filesystem features:", f);
 259         for (i=0; i <3; i++,mask++) {
 260                 for (j=0,m=1; j < 32; j++, m<<=1) {
 261                         if (*mask & m) {
 262                                 fprintf(f, " %s", e2p_feature2string(i, m));
 263                                 printed++;
 264                         }
 265                 }
 266         }
 267         if (printed == 0)
 268                 fputs("(none)", f);
 269         fputs("\n", f);
 270 }
 271
 272 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
 273                           const char *str, int *first, FILE *f)
 274 {
 275         if (gdp->bg_flags & mask) {
 276                 if (*first) {
 277                         fputs("           [", f);
 278                         *first = 0;
 279                 } else
 280                         fputs(", ", f);
 281                 fputs(str, f);
 282         }
 283 }
 284
 285 void do_show_super_stats(int argc, char *argv[])
 286 {
 287         dgrp_t  i;
 288         FILE    *out;
 289         struct ext2_group_desc *gdp;
 290         int     c, header_only = 0;
 291         int     numdirs = 0, first, gdt_csum;
 292
 293         gdt_csum = EXT2_HAS_RO_COMPAT_FEATURE(current_fs->super,
 294                                               EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 295
 296         reset_getopt();
 297         while ((c = getopt (argc, argv, "h")) != EOF) {
 298                 switch (c) {
 299                 case 'h':
 300                         header_only++;
 301                         break;
 302                 default:
 303                         goto print_usage;
 304                 }
 305         }
 306         if (optind != argc) {
 307                 goto print_usage;
 308         }
 309         if (check_fs_open(argv[0]))
 310                 return;
 311         out = open_pager();
 312
 313         list_super2(current_fs->super, out);
 314         for (i=0; i < current_fs->group_desc_count; i++)
 315                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 316         fprintf(out, "Directories:              %d\n", numdirs);
 317
 318         if (header_only) {
 319                 close_pager(out);
 320                 return;
 321         }
 322
 323         gdp = &current_fs->group_desc[0];
 324         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 325                 fprintf(out, " Group %2d: block bitmap at %u, "
 326                         "inode bitmap at %u, "
 327                         "inode table at %u\n"
 328                         "           %d free %s, "
 329                         "%d free %s, "
 330                         "%d used %s%s",
 331                         i, gdp->bg_block_bitmap,
 332                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 333                         gdp->bg_free_blocks_count,
 334                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 335                         gdp->bg_free_inodes_count,
 336                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 337                         gdp->bg_used_dirs_count,
 338                         gdp->bg_used_dirs_count != 1 ? "directories"
 339                                 : "directory", gdt_csum ? ", " : "\n");
 340                 if (gdt_csum)
 341                         fprintf(out, "%d unused %s\n",
 342                                 gdp->bg_itable_unused,
 343                                 gdp->bg_itable_unused != 1 ? "inodes":"inode");
 344                 first = 1;
 345                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
 346                               &first, out);
 347                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
 348                               &first, out);
 349                 if (gdt_csum) {
 350                         fprintf(out, "%sChecksum 0x%04x",
 351                                 first ? "           [":", ", gdp->bg_checksum);
 352                         first = 0;
 353                 }
 354                 if (!first)
 355                         fputs("]\n", out);
 356         }
 357         close_pager(out);
 358         return;
 359 print_usage:
 360         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 361 }
 362
 363 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 364                       char **argv EXT2FS_ATTR((unused)))
 365 {
 366         if (check_fs_open(argv[0]))
 367                 return;
 368         if (check_fs_read_write(argv[0]))
 369                 return;
 370
 371         if (argv[1] && !strcmp(argv[1], "-clean"))
 372                 current_fs->super->s_state |= EXT2_VALID_FS;
 373         else
 374                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 375         ext2fs_mark_super_dirty(current_fs);
 376 }
 377
 378 struct list_blocks_struct {
 379         FILE            *f;
 380         e2_blkcnt_t     total;
 381         blk_t           first_block, last_block;
 382         e2_blkcnt_t     first_bcnt, last_bcnt;
 383         e2_blkcnt_t     first;
 384 };
 385
 386 static void finish_range(struct list_blocks_struct *lb)
 387 {
 388         if (lb->first_block == 0)
 389                 return;
 390         if (lb->first)
 391                 lb->first = 0;
 392         else
 393                 fprintf(lb->f, ", ");
 394         if (lb->first_block == lb->last_block)
 395                 fprintf(lb->f, "(%lld):%u",
 396                         (long long)lb->first_bcnt, lb->first_block);
 397         else
 398                 fprintf(lb->f, "(%lld-%lld):%u-%u",
 399                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 400                         lb->first_block, lb->last_block);
 401         lb->first_block = 0;
 402 }
 403
 404 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 405                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 406                             blk_t ref_block EXT2FS_ATTR((unused)),
 407                             int ref_offset EXT2FS_ATTR((unused)),
 408                             void *private)
 409 {
 410         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 411
 412         lb->total++;
 413         if (blockcnt >= 0) {
 414                 /*
 415                  * See if we can add on to the existing range (if it exists)
 416                  */
 417                 if (lb->first_block &&
 418                     (lb->last_block+1 == *blocknr) &&
 419                     (lb->last_bcnt+1 == blockcnt)) {
 420                         lb->last_block = *blocknr;
 421                         lb->last_bcnt = blockcnt;
 422                         return 0;
 423                 }
 424                 /*
 425                  * Start a new range.
 426                  */
 427                 finish_range(lb);
 428                 lb->first_block = lb->last_block = *blocknr;
 429                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 430                 return 0;
 431         }
 432         /*
 433          * Not a normal block.  Always force a new range.
 434          */
 435         finish_range(lb);
 436         if (lb->first)
 437                 lb->first = 0;
 438         else
 439                 fprintf(lb->f, ", ");
 440         if (blockcnt == -1)
 441                 fprintf(lb->f, "(IND):%u", *blocknr);
 442         else if (blockcnt == -2)
 443                 fprintf(lb->f, "(DIND):%u", *blocknr);
 444         else if (blockcnt == -3)
 445                 fprintf(lb->f, "(TIND):%u", *blocknr);
 446         return 0;
 447 }
 448
 449 static void dump_xattr_string(FILE *out, const char *str, int len)
 450 {
 451         int printable = 0;
 452         int i;
 453
 454         /* check: is string "printable enough?" */
 455         for (i = 0; i < len; i++)
 456                 if (isprint(str[i]))
 457                         printable++;
 458
 459         if (printable <= len*7/8)
 460                 printable = 0;
 461
 462         for (i = 0; i < len; i++)
 463                 if (printable)
 464                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 465                                 (unsigned char)str[i]);
 466                 else
 467                         fprintf(out, "%02x ", (unsigned char)str[i]);
 468 }
 469
 470 static void internal_dump_inode_extra(FILE *out,
 471                                       const char *prefix EXT2FS_ATTR((unused)),
 472                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 473                                       struct ext2_inode_large *inode)
 474 {
 475         struct ext2_ext_attr_entry *entry;
 476         __u32 *magic;
 477         char *start, *end;
 478         unsigned int storage_size;
 479
 480         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 481         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 482                         EXT2_GOOD_OLD_INODE_SIZE) {
 483                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 484                                 inode->i_extra_isize);
 485                 return;
 486         }
 487         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 488                         EXT2_GOOD_OLD_INODE_SIZE -
 489                         inode->i_extra_isize;
 490         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 491                         inode->i_extra_isize);
 492         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 493                 fprintf(out, "Extended attributes stored in inode body: \n");
 494                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 495                 start = (char *) magic + sizeof(__u32);
 496                 entry = (struct ext2_ext_attr_entry *) start;
 497                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 498                         struct ext2_ext_attr_entry *next =
 499                                 EXT2_EXT_ATTR_NEXT(entry);
 500                         if (entry->e_value_size > storage_size ||
 501                                         (char *) next >= end) {
 502                                 fprintf(out, "invalid EA entry in inode\n");
 503                                 return;
 504                         }
 505                         fprintf(out, "  ");
 506                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 507                                           entry->e_name_len);
 508                         fprintf(out, " = \"");
 509                         dump_xattr_string(out, start + entry->e_value_offs,
 510                                                 entry->e_value_size);
 511                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 512                         entry = next;
 513                 }
 514         }
 515 }
 516
 517 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 518 {
 519         struct list_blocks_struct lb;
 520
 521         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 522         lb.total = 0;
 523         lb.first_block = 0;
 524         lb.f = f;
 525         lb.first = 1;
 526         ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 527                              list_blocks_proc, (void *)&lb);
 528         finish_range(&lb);
 529         if (lb.total)
 530                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 531         fprintf(f,"\n");
 532 }
 533
 534
 535 void internal_dump_inode(FILE *out, const char *prefix,
 536                          ext2_ino_t inode_num, struct ext2_inode *inode,
 537                          int do_dump_blocks)
 538 {
 539         const char *i_type;
 540         char frag, fsize;
 541         int os = current_fs->super->s_creator_os;
 542         struct ext2_inode_large *large_inode;
 543         int is_large_inode = 0;
 544
 545         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 546                 is_large_inode = 1;
 547         large_inode = (struct ext2_inode_large *) inode;
 548
 549         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 550         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 551         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 552         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 553         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 554         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 555         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 556         else i_type = "bad type";
 557         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 558         fprintf(out, "%sMode:  %04o   Flags: 0x%x\n",
 559                 prefix, inode->i_mode & 0777, inode->i_flags);
 560         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 561                 fprintf(out, "%sGeneration: %u    Version: 0x%08x:%08x\n",
 562                         prefix, inode->i_generation, large_inode->i_version_hi,
 563                         inode->osd1.linux1.l_i_version);
 564         } else {
 565                 fprintf(out, "%sGeneration: %u    Version: 0x%08x\n", prefix,
 566                         inode->i_generation, inode->osd1.linux1.l_i_version);
 567         }
 568         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 569                 prefix, inode_uid(*inode), inode_gid(*inode));
 570         if (LINUX_S_ISREG(inode->i_mode)) {
 571                 unsigned long long i_size = (inode->i_size |
 572                                     ((unsigned long long)inode->i_size_high << 32));
 573
 574                 fprintf(out, "%llu\n", i_size);
 575         } else
 576                 fprintf(out, "%d\n", inode->i_size);
 577         if (os == EXT2_OS_HURD)
 578                 fprintf(out,
 579                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 580                         prefix,
 581                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 582                         inode->osd1.hurd1.h_i_translator);
 583         else
 584                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 585                         prefix,
 586                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 587         if (os == EXT2_OS_LINUX)
 588                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 589                         prefix, inode->i_links_count,
 590                         (((unsigned long long)
 591                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 592                         inode->i_blocks);
 593         else
 594                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 595                         prefix, inode->i_links_count, inode->i_blocks);
 596         switch (os) {
 597             case EXT2_OS_HURD:
 598                 frag = inode->osd2.hurd2.h_i_frag;
 599                 fsize = inode->osd2.hurd2.h_i_fsize;
 600                 break;
 601             default:
 602                 frag = fsize = 0;
 603         }
 604         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 605                 prefix, inode->i_faddr, frag, fsize);
 606         if (is_large_inode && large_inode->i_extra_isize >= 24) {
 607                 fprintf(out, "%s ctime: 0x%08x:%08x -- %s", prefix,
 608                         inode->i_ctime, large_inode->i_ctime_extra,
 609                         time_to_string(inode->i_ctime));
 610                 fprintf(out, "%s atime: 0x%08x:%08x -- %s", prefix,
 611                         inode->i_atime, large_inode->i_atime_extra,
 612                         time_to_string(inode->i_atime));
 613                 fprintf(out, "%s mtime: 0x%08x:%08x -- %s", prefix,
 614                         inode->i_mtime, large_inode->i_mtime_extra,
 615                         time_to_string(inode->i_mtime));
 616                 fprintf(out, "%scrtime: 0x%08x:%08x -- %s", prefix,
 617                         large_inode->i_crtime, large_inode->i_crtime_extra,
 618                         time_to_string(large_inode->i_crtime));
 619         } else {
 620                 fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 621                         time_to_string(inode->i_ctime));
 622                 fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 623                         time_to_string(inode->i_atime));
 624                 fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 625                         time_to_string(inode->i_mtime));
 626         }
 627         if (inode->i_dtime)
 628           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 629                   time_to_string(inode->i_dtime));
 630         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 631                 internal_dump_inode_extra(out, prefix, inode_num,
 632                                           (struct ext2_inode_large *) inode);
 633         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 634                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 635                         (int) inode->i_size, (char *)inode->i_block);
 636         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 637                 int major, minor;
 638                 const char *devnote;
 639
 640                 if (inode->i_block[0]) {
 641                         major = (inode->i_block[0] >> 8) & 255;
 642                         minor = inode->i_block[0] & 255;
 643                         devnote = "";
 644                 } else {
 645                         major = (inode->i_block[1] & 0xfff00) >> 8;
 646                         minor = ((inode->i_block[1] & 0xff) |
 647                                  ((inode->i_block[1] >> 12) & 0xfff00));
 648                         devnote = "(New-style) ";
 649                 }
 650                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 651                         devnote, major, minor, major, minor);
 652         }
 653         else if (do_dump_blocks)
 654                 dump_blocks(out, prefix, inode_num);
 655 }
 656
 657 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 658 {
 659         FILE    *out;
 660
 661         out = open_pager();
 662         internal_dump_inode(out, "", inode_num, inode, 1);
 663         close_pager(out);
 664 }
 665
 666 void do_stat(int argc, char *argv[])
 667 {
 668         ext2_ino_t      inode;
 669         struct ext2_inode * inode_buf;
 670
 671         if (check_fs_open(argv[0]))
 672                 return;
 673
 674         inode_buf = (struct ext2_inode *)
 675                         malloc(EXT2_INODE_SIZE(current_fs->super));
 676         if (!inode_buf) {
 677                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 678                 return;
 679         }
 680
 681         if (common_inode_args_process(argc, argv, &inode, 0)) {
 682                 free(inode_buf);
 683                 return;
 684         }
 685
 686         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 687                                         EXT2_INODE_SIZE(current_fs->super))) {
 688                 free(inode_buf);
 689                 return;
 690         }
 691
 692         dump_inode(inode, inode_buf);
 693         free(inode_buf);
 694         return;
 695 }
 696
 697 void do_chroot(int argc, char *argv[])
 698 {
 699         ext2_ino_t inode;
 700         int retval;
 701
 702         if (common_inode_args_process(argc, argv, &inode, 0))
 703                 return;
 704
 705         retval = ext2fs_check_directory(current_fs, inode);
 706         if (retval)  {
 707                 com_err(argv[1], retval, 0);
 708                 return;
 709         }
 710         root = inode;
 711 }
 712
 713 void do_clri(int argc, char *argv[])
 714 {
 715         ext2_ino_t inode;
 716         struct ext2_inode inode_buf;
 717
 718         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 719                 return;
 720
 721         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 722                 return;
 723         memset(&inode_buf, 0, sizeof(inode_buf));
 724         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 725                 return;
 726 }
 727
 728 void do_freei(int argc, char *argv[])
 729 {
 730         ext2_ino_t inode;
 731
 732         if (common_inode_args_process(argc, argv, &inode,
 733                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 734                 return;
 735
 736         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 737                 com_err(argv[0], 0, "Warning: inode already clear");
 738         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 739         ext2fs_mark_ib_dirty(current_fs);
 740 }
 741
 742 void do_seti(int argc, char *argv[])
 743 {
 744         ext2_ino_t inode;
 745
 746         if (common_inode_args_process(argc, argv, &inode,
 747                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 748                 return;
 749
 750         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 751                 com_err(argv[0], 0, "Warning: inode already set");
 752         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 753         ext2fs_mark_ib_dirty(current_fs);
 754 }
 755
 756 void do_testi(int argc, char *argv[])
 757 {
 758         ext2_ino_t inode;
 759
 760         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 761                 return;
 762
 763         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 764                 printf("Inode %u is marked in use\n", inode);
 765         else
 766                 printf("Inode %u is not in use\n", inode);
 767 }
 768
 769 void do_freeb(int argc, char *argv[])
 770 {
 771         blk_t block;
 772         blk_t count = 1;
 773
 774         if (common_block_args_process(argc, argv, &block, &count))
 775                 return;
 776         if (check_fs_read_write(argv[0]))
 777                 return;
 778         while (count-- > 0) {
 779                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 780                         com_err(argv[0], 0, "Warning: block %u already clear",
 781                                 block);
 782                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 783                 block++;
 784         }
 785         ext2fs_mark_bb_dirty(current_fs);
 786 }
 787
 788 void do_setb(int argc, char *argv[])
 789 {
 790         blk_t block;
 791         blk_t count = 1;
 792
 793         if (common_block_args_process(argc, argv, &block, &count))
 794                 return;
 795         if (check_fs_read_write(argv[0]))
 796                 return;
 797         while (count-- > 0) {
 798                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 799                         com_err(argv[0], 0, "Warning: block %u already set",
 800                                 block);
 801                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 802                 block++;
 803         }
 804         ext2fs_mark_bb_dirty(current_fs);
 805 }
 806
 807 void do_testb(int argc, char *argv[])
 808 {
 809         blk_t block;
 810         blk_t count = 1;
 811
 812         if (common_block_args_process(argc, argv, &block, &count))
 813                 return;
 814         while (count-- > 0) {
 815                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 816                         printf("Block %u marked in use\n", block);
 817                 else
 818                         printf("Block %u not in use\n", block);
 819                 block++;
 820         }
 821 }
 822
 823 static void modify_u8(char *com, const char *prompt,
 824                       const char *format, __u8 *val)
 825 {
 826         char buf[200];
 827         unsigned long v;
 828         char *tmp;
 829
 830         sprintf(buf, format, *val);
 831         printf("%30s    [%s] ", prompt, buf);
 832         if (!fgets(buf, sizeof(buf), stdin))
 833                 return;
 834         if (buf[strlen (buf) - 1] == '\n')
 835                 buf[strlen (buf) - 1] = '\0';
 836         if (!buf[0])
 837                 return;
 838         v = strtoul(buf, &tmp, 0);
 839         if (*tmp)
 840                 com_err(com, 0, "Bad value - %s", buf);
 841         else
 842                 *val = v;
 843 }
 844
 845 static void modify_u16(char *com, const char *prompt,
 846                        const char *format, __u16 *val)
 847 {
 848         char buf[200];
 849         unsigned long v;
 850         char *tmp;
 851
 852         sprintf(buf, format, *val);
 853         printf("%30s    [%s] ", prompt, buf);
 854         if (!fgets(buf, sizeof(buf), stdin))
 855                 return;
 856         if (buf[strlen (buf) - 1] == '\n')
 857                 buf[strlen (buf) - 1] = '\0';
 858         if (!buf[0])
 859                 return;
 860         v = strtoul(buf, &tmp, 0);
 861         if (*tmp)
 862                 com_err(com, 0, "Bad value - %s", buf);
 863         else
 864                 *val = v;
 865 }
 866
 867 static void modify_u32(char *com, const char *prompt,
 868                        const char *format, __u32 *val)
 869 {
 870         char buf[200];
 871         unsigned long v;
 872         char *tmp;
 873
 874         sprintf(buf, format, *val);
 875         printf("%30s    [%s] ", prompt, buf);
 876         if (!fgets(buf, sizeof(buf), stdin))
 877                 return;
 878         if (buf[strlen (buf) - 1] == '\n')
 879                 buf[strlen (buf) - 1] = '\0';
 880         if (!buf[0])
 881                 return;
 882         v = strtoul(buf, &tmp, 0);
 883         if (*tmp)
 884                 com_err(com, 0, "Bad value - %s", buf);
 885         else
 886                 *val = v;
 887 }
 888
 889
 890 void do_modify_inode(int argc, char *argv[])
 891 {
 892         struct ext2_inode inode;
 893         ext2_ino_t      inode_num;
 894         int             i;
 895         unsigned char   *frag, *fsize;
 896         char            buf[80];
 897         int             os;
 898         const char      *hex_format = "0x%x";
 899         const char      *octal_format = "0%o";
 900         const char      *decimal_format = "%d";
 901         const char      *unsignedlong_format = "%lu";
 902
 903         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 904                 return;
 905
 906         os = current_fs->super->s_creator_os;
 907
 908         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 909                 return;
 910
 911         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 912         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 913         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 914         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 915         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 916         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 917         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 918         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 919         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 920         if (os == EXT2_OS_LINUX)
 921                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 922                            &inode.osd2.linux2.l_i_blocks_hi);
 923         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 924         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 925         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 926 #if 0
 927         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 928 #endif
 929         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 930         if (LINUX_S_ISDIR(inode.i_mode))
 931                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 932         else
 933                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 934
 935         if (os == EXT2_OS_HURD)
 936                 modify_u32(argv[0], "Translator Block",
 937                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 938
 939         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 940         switch (os) {
 941             case EXT2_OS_HURD:
 942                 frag = &inode.osd2.hurd2.h_i_frag;
 943                 fsize = &inode.osd2.hurd2.h_i_fsize;
 944                 break;
 945             default:
 946                 frag = fsize = 0;
 947         }
 948         if (frag)
 949                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 950         if (fsize)
 951                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 952
 953         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 954                 sprintf(buf, "Direct Block #%d", i);
 955                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 956         }
 957         modify_u32(argv[0], "Indirect Block", decimal_format,
 958                     &inode.i_block[EXT2_IND_BLOCK]);
 959         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 960                     &inode.i_block[EXT2_DIND_BLOCK]);
 961         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 962                     &inode.i_block[EXT2_TIND_BLOCK]);
 963         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 964                 return;
 965 }
 966
 967 void do_change_working_dir(int argc, char *argv[])
 968 {
 969         ext2_ino_t      inode;
 970         int             retval;
 971
 972         if (common_inode_args_process(argc, argv, &inode, 0))
 973                 return;
 974
 975         retval = ext2fs_check_directory(current_fs, inode);
 976         if (retval) {
 977                 com_err(argv[1], retval, 0);
 978                 return;
 979         }
 980         cwd = inode;
 981         return;
 982 }
 983
 984 void do_print_working_directory(int argc, char *argv[])
 985 {
 986         int     retval;
 987         char    *pathname = NULL;
 988
 989         if (common_args_process(argc, argv, 1, 1,
 990                                 "print_working_directory", "", 0))
 991                 return;
 992
 993         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 994         if (retval) {
 995                 com_err(argv[0], retval,
 996                         "while trying to get pathname of cwd");
 997         }
 998         printf("[pwd]   INODE: %6u  PATH: %s\n",
 999                cwd, pathname ? pathname : "NULL");
1000         if (pathname) {
1001                 free(pathname);
1002                 pathname = NULL;
1003         }
1004         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
1005         if (retval) {
1006                 com_err(argv[0], retval,
1007                         "while trying to get pathname of root");
1008         }
1009         printf("[root]  INODE: %6u  PATH: %s\n",
1010                root, pathname ? pathname : "NULL");
1011         if (pathname) {
1012                 free(pathname);
1013                 pathname = NULL;
1014         }
1015         return;
1016 }
1017
1018 /*
1019  * Given a mode, return the ext2 file type
1020  */
1021 static int ext2_file_type(unsigned int mode)
1022 {
1023         if (LINUX_S_ISREG(mode))
1024                 return EXT2_FT_REG_FILE;
1025
1026         if (LINUX_S_ISDIR(mode))
1027                 return EXT2_FT_DIR;
1028
1029         if (LINUX_S_ISCHR(mode))
1030                 return EXT2_FT_CHRDEV;
1031
1032         if (LINUX_S_ISBLK(mode))
1033                 return EXT2_FT_BLKDEV;
1034
1035         if (LINUX_S_ISLNK(mode))
1036                 return EXT2_FT_SYMLINK;
1037
1038         if (LINUX_S_ISFIFO(mode))
1039                 return EXT2_FT_FIFO;
1040
1041         if (LINUX_S_ISSOCK(mode))
1042                 return EXT2_FT_SOCK;
1043
1044         return 0;
1045 }
1046
1047 static void make_link(char *sourcename, char *destname)
1048 {
1049         ext2_ino_t      ino;
1050         struct ext2_inode inode;
1051         int             retval;
1052         ext2_ino_t      dir;
1053         char            *dest, *cp, *base_name;
1054
1055         /*
1056          * Get the source inode
1057          */
1058         ino = string_to_inode(sourcename);
1059         if (!ino)
1060                 return;
1061         base_name = strrchr(sourcename, '/');
1062         if (base_name)
1063                 base_name++;
1064         else
1065                 base_name = sourcename;
1066         /*
1067          * Figure out the destination.  First see if it exists and is
1068          * a directory.
1069          */
1070         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1071                 dest = base_name;
1072         else {
1073                 /*
1074                  * OK, it doesn't exist.  See if it is
1075                  * '<dir>/basename' or 'basename'
1076                  */
1077                 cp = strrchr(destname, '/');
1078                 if (cp) {
1079                         *cp = 0;
1080                         dir = string_to_inode(destname);
1081                         if (!dir)
1082                                 return;
1083                         dest = cp+1;
1084                 } else {
1085                         dir = cwd;
1086                         dest = destname;
1087                 }
1088         }
1089
1090         if (debugfs_read_inode(ino, &inode, sourcename))
1091                 return;
1092
1093         retval = ext2fs_link(current_fs, dir, dest, ino,
1094                              ext2_file_type(inode.i_mode));
1095         if (retval)
1096                 com_err("make_link", retval, 0);
1097         return;
1098 }
1099
1100
1101 void do_link(int argc, char *argv[])
1102 {
1103         if (common_args_process(argc, argv, 3, 3, "link",
1104                                 "<source file> <dest_name>", CHECK_FS_RW))
1105                 return;
1106
1107         make_link(argv[1], argv[2]);
1108 }
1109
1110 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1111                             int blockcnt EXT2FS_ATTR((unused)),
1112                             void *private EXT2FS_ATTR((unused)))
1113 {
1114         blk_t   block;
1115
1116         block = *blocknr;
1117         ext2fs_block_alloc_stats(fs, block, +1);
1118         return 0;
1119 }
1120
1121 void do_undel(int argc, char *argv[])
1122 {
1123         ext2_ino_t      ino;
1124         struct ext2_inode inode;
1125
1126         if (common_args_process(argc, argv, 2, 3, "undelete",
1127                                 "<inode_num> [dest_name]",
1128                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1129                 return;
1130
1131         ino = string_to_inode(argv[1]);
1132         if (!ino)
1133                 return;
1134
1135         if (debugfs_read_inode(ino, &inode, argv[1]))
1136                 return;
1137
1138         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1139                 com_err(argv[1], 0, "Inode is not marked as deleted");
1140                 return;
1141         }
1142
1143         /*
1144          * XXX this function doesn't handle changing the links count on the
1145          * parent directory when undeleting a directory.
1146          */
1147         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1148         inode.i_dtime = 0;
1149
1150         if (debugfs_write_inode(ino, &inode, argv[0]))
1151                 return;
1152
1153         ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1154                              mark_blocks_proc, NULL);
1155
1156         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1157
1158         if (argc > 2)
1159                 make_link(argv[1], argv[2]);
1160 }
1161
1162 static void unlink_file_by_name(char *filename)
1163 {
1164         int             retval;
1165         ext2_ino_t      dir;
1166         char            *base_name;
1167
1168         base_name = strrchr(filename, '/');
1169         if (base_name) {
1170                 *base_name++ = '\0';
1171                 dir = string_to_inode(filename);
1172                 if (!dir)
1173                         return;
1174         } else {
1175                 dir = cwd;
1176                 base_name = filename;
1177         }
1178         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1179         if (retval)
1180                 com_err("unlink_file_by_name", retval, 0);
1181         return;
1182 }
1183
1184 void do_unlink(int argc, char *argv[])
1185 {
1186         if (common_args_process(argc, argv, 2, 2, "link",
1187                                 "<pathname>", CHECK_FS_RW))
1188                 return;
1189
1190         unlink_file_by_name(argv[1]);
1191 }
1192
1193 void do_find_free_block(int argc, char *argv[])
1194 {
1195         blk_t   free_blk, goal, first_free = 0;
1196         int             count;
1197         errcode_t       retval;
1198         char            *tmp;
1199
1200         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1201                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1202                 return;
1203         }
1204         if (check_fs_open(argv[0]))
1205                 return;
1206
1207         if (argc > 1) {
1208                 count = strtol(argv[1],&tmp,0);
1209                 if (*tmp) {
1210                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1211                         return;
1212                 }
1213         } else
1214                 count = 1;
1215
1216         if (argc > 2) {
1217                 goal = strtol(argv[2], &tmp, 0);
1218                 if (*tmp) {
1219                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1220                         return;
1221                 }
1222         }
1223         else
1224                 goal = current_fs->super->s_first_data_block;
1225
1226         printf("Free blocks found: ");
1227         free_blk = goal - 1;
1228         while (count-- > 0) {
1229                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1230                                           &free_blk);
1231                 if (first_free) {
1232                         if (first_free == free_blk)
1233                                 break;
1234                 } else
1235                         first_free = free_blk;
1236                 if (retval) {
1237                         com_err("ext2fs_new_block", retval, 0);
1238                         return;
1239                 } else
1240                         printf("%u ", free_blk);
1241         }
1242         printf("\n");
1243 }
1244
1245 void do_find_free_inode(int argc, char *argv[])
1246 {
1247         ext2_ino_t      free_inode, dir;
1248         int             mode;
1249         int             retval;
1250         char            *tmp;
1251
1252         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1253                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1254                 return;
1255         }
1256         if (check_fs_open(argv[0]))
1257                 return;
1258
1259         if (argc > 1) {
1260                 dir = strtol(argv[1], &tmp, 0);
1261                 if (*tmp) {
1262                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1263                         return;
1264                 }
1265         }
1266         else
1267                 dir = root;
1268         if (argc > 2) {
1269                 mode = strtol(argv[2], &tmp, 0);
1270                 if (*tmp) {
1271                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1272                         return;
1273                 }
1274         } else
1275                 mode = 010755;
1276
1277         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1278         if (retval)
1279                 com_err("ext2fs_new_inode", retval, 0);
1280         else
1281                 printf("Free inode found: %u\n", free_inode);
1282 }
1283
1284 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1285 {
1286         ext2_file_t     e2_file;
1287         errcode_t       retval;
1288         int             got;
1289         unsigned int    written;
1290         char            buf[8192];
1291         char            *ptr;
1292
1293         retval = ext2fs_file_open(current_fs, newfile,
1294                                   EXT2_FILE_WRITE, &e2_file);
1295         if (retval)
1296                 return retval;
1297
1298         while (1) {
1299                 got = read(fd, buf, sizeof(buf));
1300                 if (got == 0)
1301                         break;
1302                 if (got < 0) {
1303                         retval = errno;
1304                         goto fail;
1305                 }
1306                 ptr = buf;
1307                 while (got > 0) {
1308                         retval = ext2fs_file_write(e2_file, ptr,
1309                                                    got, &written);
1310                         if (retval)
1311                                 goto fail;
1312
1313                         got -= written;
1314                         ptr += written;
1315                 }
1316         }
1317         retval = ext2fs_file_close(e2_file);
1318         return retval;
1319
1320 fail:
1321         (void) ext2fs_file_close(e2_file);
1322         return retval;
1323 }
1324
1325
1326 void do_write(int argc, char *argv[])
1327 {
1328         int             fd;
1329         struct stat     statbuf;
1330         ext2_ino_t      newfile;
1331         errcode_t       retval;
1332         struct ext2_inode inode;
1333
1334         if (common_args_process(argc, argv, 3, 3, "write",
1335                                 "<native file> <new file>", CHECK_FS_RW))
1336                 return;
1337
1338         fd = open(argv[1], O_RDONLY);
1339         if (fd < 0) {
1340                 com_err(argv[1], errno, 0);
1341                 return;
1342         }
1343         if (fstat(fd, &statbuf) < 0) {
1344                 com_err(argv[1], errno, 0);
1345                 close(fd);
1346                 return;
1347         }
1348
1349         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1350         if (retval == 0) {
1351                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1352                 close(fd);
1353                 return;
1354         }
1355
1356         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1357         if (retval) {
1358                 com_err(argv[0], retval, 0);
1359                 close(fd);
1360                 return;
1361         }
1362         printf("Allocated inode: %u\n", newfile);
1363         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1364                              EXT2_FT_REG_FILE);
1365         if (retval == EXT2_ET_DIR_NO_SPACE) {
1366                 retval = ext2fs_expand_dir(current_fs, cwd);
1367                 if (retval) {
1368                         com_err(argv[0], retval, "while expanding directory");
1369                         return;
1370                 }
1371                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1372                                      EXT2_FT_REG_FILE);
1373         }
1374         if (retval) {
1375                 com_err(argv[2], retval, 0);
1376                 close(fd);
1377                 return;
1378         }
1379         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1380                 com_err(argv[0], 0, "Warning: inode already set");
1381         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1382         memset(&inode, 0, sizeof(inode));
1383         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1384         inode.i_atime = inode.i_ctime = inode.i_mtime =
1385                 current_fs->now ? current_fs->now : time(0);
1386         inode.i_links_count = 1;
1387         inode.i_size = statbuf.st_size;
1388         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1389                 close(fd);
1390                 return;
1391         }
1392         if (LINUX_S_ISREG(inode.i_mode)) {
1393                 retval = copy_file(fd, newfile);
1394                 if (retval)
1395                         com_err("copy_file", retval, 0);
1396         }
1397         close(fd);
1398 }
1399
1400 void do_mknod(int argc, char *argv[])
1401 {
1402         unsigned long   mode, major, minor;
1403         ext2_ino_t      newfile;
1404         errcode_t       retval;
1405         struct ext2_inode inode;
1406         int             filetype, nr;
1407
1408         if (check_fs_open(argv[0]))
1409                 return;
1410         if (argc < 3 || argv[2][1]) {
1411         usage:
1412                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1413                 return;
1414         }
1415         mode = minor = major = 0;
1416         switch (argv[2][0]) {
1417                 case 'p':
1418                         mode = LINUX_S_IFIFO;
1419                         filetype = EXT2_FT_FIFO;
1420                         nr = 3;
1421                         break;
1422                 case 'c':
1423                         mode = LINUX_S_IFCHR;
1424                         filetype = EXT2_FT_CHRDEV;
1425                         nr = 5;
1426                         break;
1427                 case 'b':
1428                         mode = LINUX_S_IFBLK;
1429                         filetype = EXT2_FT_BLKDEV;
1430                         nr = 5;
1431                         break;
1432                 default:
1433                         filetype = 0;
1434                         nr = 0;
1435         }
1436         if (nr == 5) {
1437                 major = strtoul(argv[3], argv+3, 0);
1438                 minor = strtoul(argv[4], argv+4, 0);
1439                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1440                         nr = 0;
1441         }
1442         if (argc != nr)
1443                 goto usage;
1444         if (check_fs_read_write(argv[0]))
1445                 return;
1446         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1447         if (retval) {
1448                 com_err(argv[0], retval, 0);
1449                 return;
1450         }
1451         printf("Allocated inode: %u\n", newfile);
1452         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1453         if (retval == EXT2_ET_DIR_NO_SPACE) {
1454                 retval = ext2fs_expand_dir(current_fs, cwd);
1455                 if (retval) {
1456                         com_err(argv[0], retval, "while expanding directory");
1457                         return;
1458                 }
1459                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1460                                      filetype);
1461         }
1462         if (retval) {
1463                 com_err(argv[1], retval, 0);
1464                 return;
1465         }
1466         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1467                 com_err(argv[0], 0, "Warning: inode already set");
1468         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1469         ext2fs_mark_ib_dirty(current_fs);
1470         memset(&inode, 0, sizeof(inode));
1471         inode.i_mode = mode;
1472         inode.i_atime = inode.i_ctime = inode.i_mtime =
1473                 current_fs->now ? current_fs->now : time(0);
1474         if ((major < 256) && (minor < 256)) {
1475                 inode.i_block[0] = major*256+minor;
1476                 inode.i_block[1] = 0;
1477         } else {
1478                 inode.i_block[0] = 0;
1479                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1480         }
1481         inode.i_links_count = 1;
1482         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1483                 return;
1484 }
1485
1486 void do_mkdir(int argc, char *argv[])
1487 {
1488         char    *cp;
1489         ext2_ino_t      parent;
1490         char    *name;
1491         errcode_t retval;
1492
1493         if (common_args_process(argc, argv, 2, 2, "mkdir",
1494                                 "<filename>", CHECK_FS_RW))
1495                 return;
1496
1497         cp = strrchr(argv[1], '/');
1498         if (cp) {
1499                 *cp = 0;
1500                 parent = string_to_inode(argv[1]);
1501                 if (!parent) {
1502                         com_err(argv[1], ENOENT, 0);
1503                         return;
1504                 }
1505                 name = cp+1;
1506         } else {
1507                 parent = cwd;
1508                 name = argv[1];
1509         }
1510
1511 try_again:
1512         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1513         if (retval == EXT2_ET_DIR_NO_SPACE) {
1514                 retval = ext2fs_expand_dir(current_fs, parent);
1515                 if (retval) {
1516                         com_err("argv[0]", retval, "while expanding directory");
1517                         return;
1518                 }
1519                 goto try_again;
1520         }
1521         if (retval) {
1522                 com_err("ext2fs_mkdir", retval, 0);
1523                 return;
1524         }
1525
1526 }
1527
1528 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1529                                int blockcnt EXT2FS_ATTR((unused)),
1530                                void *private EXT2FS_ATTR((unused)))
1531 {
1532         blk_t   block;
1533
1534         block = *blocknr;
1535         ext2fs_block_alloc_stats(fs, block, -1);
1536         return 0;
1537 }
1538
1539 static void kill_file_by_inode(ext2_ino_t inode)
1540 {
1541         struct ext2_inode inode_buf;
1542
1543         if (debugfs_read_inode(inode, &inode_buf, 0))
1544                 return;
1545         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1546         if (debugfs_write_inode(inode, &inode_buf, 0))
1547                 return;
1548         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1549                 return;
1550
1551         ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1552                              release_blocks_proc, NULL);
1553         printf("\n");
1554         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1555                                   LINUX_S_ISDIR(inode_buf.i_mode));
1556 }
1557
1558
1559 void do_kill_file(int argc, char *argv[])
1560 {
1561         ext2_ino_t inode_num;
1562
1563         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1564                 return;
1565
1566         kill_file_by_inode(inode_num);
1567 }
1568
1569 void do_rm(int argc, char *argv[])
1570 {
1571         int retval;
1572         ext2_ino_t inode_num;
1573         struct ext2_inode inode;
1574
1575         if (common_args_process(argc, argv, 2, 2, "rm",
1576                                 "<filename>", CHECK_FS_RW))
1577                 return;
1578
1579         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1580         if (retval) {
1581                 com_err(argv[0], retval, "while trying to resolve filename");
1582                 return;
1583         }
1584
1585         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1586                 return;
1587
1588         if (LINUX_S_ISDIR(inode.i_mode)) {
1589                 com_err(argv[0], 0, "file is a directory");
1590                 return;
1591         }
1592
1593         --inode.i_links_count;
1594         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1595                 return;
1596
1597         unlink_file_by_name(argv[1]);
1598         if (inode.i_links_count == 0)
1599                 kill_file_by_inode(inode_num);
1600 }
1601
1602 struct rd_struct {
1603         ext2_ino_t      parent;
1604         int             empty;
1605 };
1606
1607 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1608                       int       entry EXT2FS_ATTR((unused)),
1609                       struct ext2_dir_entry *dirent,
1610                       int       offset EXT2FS_ATTR((unused)),
1611                       int       blocksize EXT2FS_ATTR((unused)),
1612                       char      *buf EXT2FS_ATTR((unused)),
1613                       void      *private)
1614 {
1615         struct rd_struct *rds = (struct rd_struct *) private;
1616
1617         if (dirent->inode == 0)
1618                 return 0;
1619         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1620                 return 0;
1621         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1622             (dirent->name[1] == '.')) {
1623                 rds->parent = dirent->inode;
1624                 return 0;
1625         }
1626         rds->empty = 0;
1627         return 0;
1628 }
1629
1630 void do_rmdir(int argc, char *argv[])
1631 {
1632         int retval;
1633         ext2_ino_t inode_num;
1634         struct ext2_inode inode;
1635         struct rd_struct rds;
1636
1637         if (common_args_process(argc, argv, 2, 2, "rmdir",
1638                                 "<filename>", CHECK_FS_RW))
1639                 return;
1640
1641         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1642         if (retval) {
1643                 com_err(argv[0], retval, "while trying to resolve filename");
1644                 return;
1645         }
1646
1647         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1648                 return;
1649
1650         if (!LINUX_S_ISDIR(inode.i_mode)) {
1651                 com_err(argv[0], 0, "file is not a directory");
1652                 return;
1653         }
1654
1655         rds.parent = 0;
1656         rds.empty = 1;
1657
1658         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1659                                     0, rmdir_proc, &rds);
1660         if (retval) {
1661                 com_err(argv[0], retval, "while iterating over directory");
1662                 return;
1663         }
1664         if (rds.empty == 0) {
1665                 com_err(argv[0], 0, "directory not empty");
1666                 return;
1667         }
1668
1669         inode.i_links_count = 0;
1670         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1671                 return;
1672
1673         unlink_file_by_name(argv[1]);
1674         kill_file_by_inode(inode_num);
1675
1676         if (rds.parent) {
1677                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1678                         return;
1679                 if (inode.i_links_count > 1)
1680                         inode.i_links_count--;
1681                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1682                         return;
1683         }
1684 }
1685
1686 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1687                             char *argv[] EXT2FS_ATTR((unused)))
1688 {
1689         FILE *out = stdout;
1690
1691         if (current_fs)
1692                 fprintf(out, "Open mode: read-%s\n",
1693                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1694         fprintf(out, "Filesystem in use: %s\n",
1695                 current_fs ? current_fs->device_name : "--none--");
1696 }
1697
1698 void do_expand_dir(int argc, char *argv[])
1699 {
1700         ext2_ino_t inode;
1701         int retval;
1702
1703         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1704                 return;
1705
1706         retval = ext2fs_expand_dir(current_fs, inode);
1707         if (retval)
1708                 com_err("ext2fs_expand_dir", retval, 0);
1709         return;
1710 }
1711
1712 void do_features(int argc, char *argv[])
1713 {
1714         int     i;
1715
1716         if (check_fs_open(argv[0]))
1717                 return;
1718
1719         if ((argc != 1) && check_fs_read_write(argv[0]))
1720                 return;
1721         for (i=1; i < argc; i++) {
1722                 if (e2p_edit_feature(argv[i],
1723                                      &current_fs->super->s_feature_compat, 0))
1724                         com_err(argv[0], 0, "Unknown feature: %s\n",
1725                                 argv[i]);
1726                 else
1727                         ext2fs_mark_super_dirty(current_fs);
1728         }
1729         print_features(current_fs->super, stdout);
1730 }
1731
1732 void do_bmap(int argc, char *argv[])
1733 {
1734         ext2_ino_t      ino;
1735         blk_t           blk, pblk;
1736         int             err;
1737         errcode_t       errcode;
1738
1739         if (common_args_process(argc, argv, 3, 3, argv[0],
1740                                 "<file> logical_blk", 0))
1741                 return;
1742
1743         ino = string_to_inode(argv[1]);
1744         if (!ino)
1745                 return;
1746         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1747
1748         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1749         if (errcode) {
1750                 com_err("argv[0]", errcode,
1751                         "while mapping logical block %u\n", blk);
1752                 return;
1753         }
1754         printf("%u\n", pblk);
1755 }
1756
1757 void do_imap(int argc, char *argv[])
1758 {
1759         ext2_ino_t      ino;
1760         unsigned long   group, block, block_nr, offset;
1761
1762         if (common_args_process(argc, argv, 2, 2, argv[0],
1763                                 "<file>", 0))
1764                 return;
1765         ino = string_to_inode(argv[1]);
1766         if (!ino)
1767                 return;
1768
1769         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1770         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1771                 EXT2_INODE_SIZE(current_fs->super);
1772         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1773         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1774                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1775                         group);
1776                 return;
1777         }
1778         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1779                 block;
1780         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1781
1782         printf("Inode %d is part of block group %lu\n"
1783                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1784                block_nr, offset);
1785
1786 }
1787
1788 void do_set_current_time(int argc, char *argv[])
1789 {
1790         time_t now;
1791
1792         if (common_args_process(argc, argv, 2, 2, argv[0],
1793                                 "<time>", 0))
1794                 return;
1795
1796         now = string_to_time(argv[1]);
1797         if (now == ((time_t) -1)) {
1798                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1799                         argv[1]);
1800                 return;
1801
1802         } else {
1803                 printf("Setting current time to %s\n", time_to_string(now));
1804                 current_fs->now = now;
1805         }
1806 }
1807
1808 static int source_file(const char *cmd_file, int sci_idx)
1809 {
1810         FILE            *f;
1811         char            buf[256];
1812         char            *cp;
1813         int             exit_status = 0;
1814         int             retval;
1815
1816         if (strcmp(cmd_file, "-") == 0)
1817                 f = stdin;
1818         else {
1819                 f = fopen(cmd_file, "r");
1820                 if (!f) {
1821                         perror(cmd_file);
1822                         exit(1);
1823                 }
1824         }
1825         fflush(stdout);
1826         fflush(stderr);
1827         setbuf(stdout, NULL);
1828         setbuf(stderr, NULL);
1829         while (!feof(f)) {
1830                 if (fgets(buf, sizeof(buf), f) == NULL)
1831                         break;
1832                 cp = strchr(buf, '\n');
1833                 if (cp)
1834                         *cp = 0;
1835                 cp = strchr(buf, '\r');
1836                 if (cp)
1837                         *cp = 0;
1838                 printf("debugfs: %s\n", buf);
1839                 retval = ss_execute_line(sci_idx, buf);
1840                 if (retval) {
1841                         ss_perror(sci_idx, retval, buf);
1842                         exit_status++;
1843                 }
1844         }
1845         return exit_status;
1846 }
1847
1848 int main(int argc, char **argv)
1849 {
1850         int             retval;
1851         int             sci_idx;
1852         const char      *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1853         int             c;
1854         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1855         char            *request = 0;
1856         int             exit_status = 0;
1857         char            *cmd_file = 0;
1858         blk_t           superblock = 0;
1859         blk_t           blocksize = 0;
1860         int             catastrophic = 0;
1861         char            *data_filename = 0;
1862
1863         if (debug_prog_name == 0)
1864                 debug_prog_name = "debugfs";
1865
1866         add_error_table(&et_ext2_error_table);
1867         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
1868                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
1869
1870         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1871                 switch (c) {
1872                 case 'R':
1873                         request = optarg;
1874                         break;
1875                 case 'f':
1876                         cmd_file = optarg;
1877                         break;
1878                 case 'd':
1879                         data_filename = optarg;
1880                         break;
1881                 case 'i':
1882                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1883                         break;
1884                 case 'w':
1885                         open_flags |= EXT2_FLAG_RW;
1886                         break;
1887                 case 'b':
1888                         blocksize = parse_ulong(optarg, argv[0],
1889                                                 "block size", 0);
1890                         break;
1891                 case 's':
1892                         superblock = parse_ulong(optarg, argv[0],
1893                                                  "superblock number", 0);
1894                         break;
1895                 case 'c':
1896                         catastrophic = 1;
1897                         break;
1898                 case 'V':
1899                         /* Print version number and exit */
1900                         fprintf(stderr, "\tUsing %s\n",
1901                                 error_message(EXT2_ET_BASE));
1902                         exit(0);
1903                 default:
1904                         com_err(argv[0], 0, usage, debug_prog_name);
1905                         return 1;
1906                 }
1907         }
1908         if (optind < argc)
1909                 open_filesystem(argv[optind], open_flags,
1910                                 superblock, blocksize, catastrophic,
1911                                 data_filename);
1912
1913         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
1914                                        &debug_cmds, &retval);
1915         if (retval) {
1916                 ss_perror(sci_idx, retval, "creating invocation");
1917                 exit(1);
1918         }
1919         ss_get_readline(sci_idx);
1920
1921         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1922         if (retval) {
1923                 ss_perror(sci_idx, retval, "adding standard requests");
1924                 exit (1);
1925         }
1926         if (extra_cmds)
1927                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
1928         if (retval) {
1929                 ss_perror(sci_idx, retval, "adding extra requests");
1930                 exit (1);
1931         }
1932         if (request) {
1933                 retval = 0;
1934                 retval = ss_execute_line(sci_idx, request);
1935                 if (retval) {
1936                         ss_perror(sci_idx, retval, request);
1937                         exit_status++;
1938                 }
1939         } else if (cmd_file) {
1940                 exit_status = source_file(cmd_file, sci_idx);
1941         } else {
1942                 ss_listen(sci_idx);
1943         }
1944
1945         if (current_fs)
1946                 close_filesystem();
1947
1948         remove_error_table(&et_ext2_error_table);
1949         return exit_status;
1950 }