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 "../version.h"
  37
  38 extern ss_request_table debug_cmds;
  39
  40 ext2_filsys     current_fs = NULL;
  41 ext2_ino_t      root, cwd;
  42
  43 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  44                             blk_t blocksize, int catastrophic)
  45 {
  46         int     retval;
  47
  48         if (superblock != 0 && blocksize == 0) {
  49                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  50                 current_fs = NULL;
  51                 return;
  52         }
  53
  54         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  55                 com_err(device, 0,
  56                         "opening read-only because of catastrophic mode");
  57                 open_flags &= ~EXT2_FLAG_RW;
  58         }
  59
  60         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  61                              unix_io_manager, &current_fs);
  62         if (retval) {
  63                 com_err(device, retval, "while opening filesystem");
  64                 current_fs = NULL;
  65                 return;
  66         }
  67
  68         if (catastrophic)
  69                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  70         else {
  71                 retval = ext2fs_read_inode_bitmap(current_fs);
  72                 if (retval) {
  73                         com_err(device, retval, "while reading inode bitmap");
  74                         goto errout;
  75                 }
  76                 retval = ext2fs_read_block_bitmap(current_fs);
  77                 if (retval) {
  78                         com_err(device, retval, "while reading block bitmap");
  79                         goto errout;
  80                 }
  81         }
  82         root = cwd = EXT2_ROOT_INO;
  83         return;
  84
  85 errout:
  86         retval = ext2fs_close(current_fs);
  87         if (retval)
  88                 com_err(device, retval, "while trying to close filesystem");
  89         current_fs = NULL;
  90 }
  91
  92 void do_open_filesys(int argc, char **argv)
  93 {
  94         const char *usage = "Usage: open [-s superblock] [-b blocksize] [-c] [-w] <device>";
  95         int     c, err;
  96         int     catastrophic = 0;
  97         blk_t   superblock = 0;
  98         blk_t   blocksize = 0;
  99         int open_flags = 0;
 100
 101         reset_getopt();
 102         while ((c = getopt (argc, argv, "iwfcb:s:")) != EOF) {
 103                 switch (c) {
 104                 case 'i':
 105                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 106                         break;
 107                 case 'w':
 108                         open_flags |= EXT2_FLAG_RW;
 109                         break;
 110                 case 'f':
 111                         open_flags |= EXT2_FLAG_FORCE;
 112                         break;
 113                 case 'c':
 114                         catastrophic = 1;
 115                         break;
 116                 case 'b':
 117                         blocksize = parse_ulong(optarg, argv[0],
 118                                                 "block size", &err);
 119                         if (err)
 120                                 return;
 121                         break;
 122                 case 's':
 123                         superblock = parse_ulong(optarg, argv[0],
 124                                                  "superblock number", &err);
 125                         if (err)
 126                                 return;
 127                         break;
 128                 default:
 129                         com_err(argv[0], 0, usage);
 130                         return;
 131                 }
 132         }
 133         if (optind != argc-1) {
 134                 com_err(argv[0], 0, usage);
 135                 return;
 136         }
 137         if (check_fs_not_open(argv[0]))
 138                 return;
 139         open_filesystem(argv[optind], open_flags,
 140                         superblock, blocksize, catastrophic);
 141 }
 142
 143 void do_lcd(int argc, char **argv)
 144 {
 145         if (common_args_process(argc, argv, 2, 2, "lcd",
 146                                 "<native dir>", 0))
 147                 return;
 148
 149         if (chdir(argv[1]) == -1) {
 150                 com_err(argv[0], errno,
 151                         "while trying to change native directory to %s",
 152                         argv[1]);
 153                 return;
 154         }
 155 }
 156
 157 static void close_filesystem(NOARGS)
 158 {
 159         int     retval;
 160
 161         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 162                 retval = ext2fs_write_inode_bitmap(current_fs);
 163                 if (retval)
 164                         com_err("ext2fs_write_inode_bitmap", retval, "");
 165         }
 166         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 167                 retval = ext2fs_write_block_bitmap(current_fs);
 168                 if (retval)
 169                         com_err("ext2fs_write_block_bitmap", retval, "");
 170         }
 171         retval = ext2fs_close(current_fs);
 172         if (retval)
 173                 com_err("ext2fs_close", retval, "");
 174         current_fs = NULL;
 175         return;
 176 }
 177
 178 void do_close_filesys(int argc, char **argv)
 179 {
 180         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 181                 return;
 182         close_filesystem();
 183 }
 184
 185 void do_init_filesys(int argc, char **argv)
 186 {
 187         struct ext2_super_block param;
 188         errcode_t       retval;
 189         int             err;
 190
 191         if (common_args_process(argc, argv, 3, 3, "initialize",
 192                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 193                 return;
 194
 195         memset(&param, 0, sizeof(struct ext2_super_block));
 196         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 197                                            "blocks count", &err);
 198         if (err)
 199                 return;
 200         retval = ext2fs_initialize(argv[1], 0, &param,
 201                                    unix_io_manager, &current_fs);
 202         if (retval) {
 203                 com_err(argv[1], retval, "while initializing filesystem");
 204                 current_fs = NULL;
 205                 return;
 206         }
 207         root = cwd = EXT2_ROOT_INO;
 208         return;
 209 }
 210
 211 static void print_features(struct ext2_super_block * s, FILE *f)
 212 {
 213         int     i, j, printed=0;
 214         __u32   *mask = &s->s_feature_compat, m;
 215
 216         fputs("Filesystem features:", f);
 217         for (i=0; i <3; i++,mask++) {
 218                 for (j=0,m=1; j < 32; j++, m<<=1) {
 219                         if (*mask & m) {
 220                                 fprintf(f, " %s", e2p_feature2string(i, m));
 221                                 printed++;
 222                         }
 223                 }
 224         }
 225         if (printed == 0)
 226                 fputs("(none)", f);
 227         fputs("\n", f);
 228 }
 229
 230 void do_show_super_stats(int argc, char *argv[])
 231 {
 232         int     i;
 233         FILE    *out;
 234         struct ext2_group_desc *gdp;
 235         int     c, header_only = 0;
 236         int     numdirs = 0;
 237         const char *usage = "Usage: show_super [-h]";
 238
 239         reset_getopt();
 240         while ((c = getopt (argc, argv, "h")) != EOF) {
 241                 switch (c) {
 242                 case 'h':
 243                         header_only++;
 244                         break;
 245                 default:
 246                         com_err(argv[0], 0, usage);
 247                         return;
 248                 }
 249         }
 250         if (optind != argc) {
 251                 com_err(argv[0], 0, usage);
 252                 return;
 253         }
 254         if (check_fs_open(argv[0]))
 255                 return;
 256         out = open_pager();
 257
 258         list_super2(current_fs->super, out);
 259         for (i=0; i < current_fs->group_desc_count; i++)
 260                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 261         fprintf(out, "Directories:              %d\n", numdirs);
 262
 263         if (header_only) {
 264                 close_pager(out);
 265                 return;
 266         }
 267
 268         gdp = &current_fs->group_desc[0];
 269         for (i = 0; i < current_fs->group_desc_count; i++, gdp++)
 270                 fprintf(out, " Group %2d: block bitmap at %d, "
 271                         "inode bitmap at %d, "
 272                         "inode table at %d\n"
 273                         "           %d free %s, "
 274                         "%d free %s, "
 275                         "%d used %s\n",
 276                         i, gdp->bg_block_bitmap,
 277                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 278                         gdp->bg_free_blocks_count,
 279                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 280                         gdp->bg_free_inodes_count,
 281                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 282                         gdp->bg_used_dirs_count,
 283                         gdp->bg_used_dirs_count != 1 ? "directories"
 284                                 : "directory");
 285         close_pager(out);
 286 }
 287
 288 void do_dirty_filesys(int argc, char **argv)
 289 {
 290         if (check_fs_open(argv[0]))
 291                 return;
 292         if (check_fs_read_write(argv[0]))
 293                 return;
 294
 295         if (argv[1] && !strcmp(argv[1], "-clean"))
 296                 current_fs->super->s_state |= EXT2_VALID_FS;
 297         else
 298                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 299         ext2fs_mark_super_dirty(current_fs);
 300 }
 301
 302 struct list_blocks_struct {
 303         FILE            *f;
 304         e2_blkcnt_t     total;
 305         blk_t           first_block, last_block;
 306         e2_blkcnt_t     first_bcnt, last_bcnt;
 307         e2_blkcnt_t     first;
 308 };
 309
 310 static void finish_range(struct list_blocks_struct *lb)
 311 {
 312         if (lb->first_block == 0)
 313                 return;
 314         if (lb->first)
 315                 lb->first = 0;
 316         else
 317                 fprintf(lb->f, ", ");
 318         if (lb->first_block == lb->last_block)
 319                 fprintf(lb->f, "(%lld):%d", lb->first_bcnt, lb->first_block);
 320         else
 321                 fprintf(lb->f, "(%lld-%lld):%d-%d", lb->first_bcnt,
 322                         lb->last_bcnt, lb->first_block, lb->last_block);
 323         lb->first_block = 0;
 324 }
 325
 326 static int list_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 327                             e2_blkcnt_t blockcnt, blk_t ref_block,
 328                             int ref_offset, void *private)
 329 {
 330         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 331
 332         lb->total++;
 333         if (blockcnt >= 0) {
 334                 /*
 335                  * See if we can add on to the existing range (if it exists)
 336                  */
 337                 if (lb->first_block &&
 338                     (lb->last_block+1 == *blocknr) &&
 339                     (lb->last_bcnt+1 == blockcnt)) {
 340                         lb->last_block = *blocknr;
 341                         lb->last_bcnt = blockcnt;
 342                         return 0;
 343                 }
 344                 /*
 345                  * Start a new range.
 346                  */
 347                 finish_range(lb);
 348                 lb->first_block = lb->last_block = *blocknr;
 349                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 350                 return 0;
 351         }
 352         /*
 353          * Not a normal block.  Always force a new range.
 354          */
 355         finish_range(lb);
 356         if (lb->first)
 357                 lb->first = 0;
 358         else
 359                 fprintf(lb->f, ", ");
 360         if (blockcnt == -1)
 361                 fprintf(lb->f, "(IND):%d", *blocknr);
 362         else if (blockcnt == -2)
 363                 fprintf(lb->f, "(DIND):%d", *blocknr);
 364         else if (blockcnt == -3)
 365                 fprintf(lb->f, "(TIND):%d", *blocknr);
 366         return 0;
 367 }
 368
 369
 370 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 371 {
 372         struct list_blocks_struct lb;
 373
 374         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 375         lb.total = 0;
 376         lb.first_block = 0;
 377         lb.f = f;
 378         lb.first = 1;
 379         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 380                              list_blocks_proc, (void *)&lb);
 381         finish_range(&lb);
 382         if (lb.total)
 383                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 384         fprintf(f,"\n");
 385 }
 386
 387
 388 void internal_dump_inode(FILE *out, const char *prefix,
 389                          ext2_ino_t inode_num, struct ext2_inode *inode,
 390                          int do_dump_blocks)
 391 {
 392         const char *i_type;
 393         char frag, fsize;
 394         int os = current_fs->super->s_creator_os;
 395
 396         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 397         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 398         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 399         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 400         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 401         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 402         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 403         else i_type = "bad type";
 404         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 405         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 406                 prefix,
 407                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 408         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 409                 prefix, inode->i_uid, inode->i_gid);
 410         if (LINUX_S_ISREG(inode->i_mode)) {
 411                 __u64 i_size = (inode->i_size |
 412                                 ((unsigned long long)inode->i_size_high << 32));
 413
 414                 fprintf(out, "%lld\n", i_size);
 415         } else
 416                 fprintf(out, "%d\n", inode->i_size);
 417         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 418                 fprintf(out,
 419                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 420                         prefix,
 421                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 422                         inode->osd1.hurd1.h_i_translator);
 423         else
 424                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 425                         prefix,
 426                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 427         fprintf(out, "%sLinks: %d   Blockcount: %d\n",
 428                 prefix, inode->i_links_count, inode->i_blocks);
 429         switch (os) {
 430             case EXT2_OS_LINUX:
 431                 frag = inode->osd2.linux2.l_i_frag;
 432                 fsize = inode->osd2.linux2.l_i_fsize;
 433                 break;
 434             case EXT2_OS_HURD:
 435                 frag = inode->osd2.hurd2.h_i_frag;
 436                 fsize = inode->osd2.hurd2.h_i_fsize;
 437                 break;
 438             case EXT2_OS_MASIX:
 439                 frag = inode->osd2.masix2.m_i_frag;
 440                 fsize = inode->osd2.masix2.m_i_fsize;
 441                 break;
 442             default:
 443                 frag = fsize = 0;
 444         }
 445         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 446                 prefix, inode->i_faddr, frag, fsize);
 447         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 448                 time_to_string(inode->i_ctime));
 449         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 450                 time_to_string(inode->i_atime));
 451         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 452                 time_to_string(inode->i_mtime));
 453         if (inode->i_dtime)
 454           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 455                   time_to_string(inode->i_dtime));
 456         if (LINUX_S_ISLNK(inode->i_mode) && inode->i_blocks == 0)
 457                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 458                         (int) inode->i_size, (char *)inode->i_block);
 459         else if (do_dump_blocks)
 460                 dump_blocks(out, prefix, inode_num);
 461 }
 462
 463 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode inode)
 464 {
 465         FILE    *out;
 466
 467         out = open_pager();
 468         internal_dump_inode(out, "", inode_num, &inode, 1);
 469         close_pager(out);
 470 }
 471
 472 void do_stat(int argc, char *argv[])
 473 {
 474         ext2_ino_t      inode;
 475         struct ext2_inode inode_buf;
 476
 477         if (common_inode_args_process(argc, argv, &inode, 0))
 478                 return;
 479
 480         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 481                 return;
 482
 483         dump_inode(inode,inode_buf);
 484         return;
 485 }
 486
 487 void do_chroot(int argc, char *argv[])
 488 {
 489         ext2_ino_t inode;
 490         int retval;
 491
 492         if (common_inode_args_process(argc, argv, &inode, 0))
 493                 return;
 494
 495         retval = ext2fs_check_directory(current_fs, inode);
 496         if (retval)  {
 497                 com_err(argv[1], retval, "");
 498                 return;
 499         }
 500         root = inode;
 501 }
 502
 503 void do_clri(int argc, char *argv[])
 504 {
 505         ext2_ino_t inode;
 506         struct ext2_inode inode_buf;
 507
 508         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 509                 return;
 510
 511         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 512                 return;
 513         memset(&inode_buf, 0, sizeof(inode_buf));
 514         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 515                 return;
 516 }
 517
 518 void do_freei(int argc, char *argv[])
 519 {
 520         ext2_ino_t inode;
 521
 522         if (common_inode_args_process(argc, argv, &inode,
 523                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 524                 return;
 525
 526         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 527                 com_err(argv[0], 0, "Warning: inode already clear");
 528         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 529         ext2fs_mark_ib_dirty(current_fs);
 530 }
 531
 532 void do_seti(int argc, char *argv[])
 533 {
 534         ext2_ino_t inode;
 535
 536         if (common_inode_args_process(argc, argv, &inode,
 537                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 538                 return;
 539
 540         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 541                 com_err(argv[0], 0, "Warning: inode already set");
 542         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 543         ext2fs_mark_ib_dirty(current_fs);
 544 }
 545
 546 void do_testi(int argc, char *argv[])
 547 {
 548         ext2_ino_t inode;
 549
 550         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 551                 return;
 552
 553         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 554                 printf("Inode %u is marked in use\n", inode);
 555         else
 556                 printf("Inode %u is not in use\n", inode);
 557 }
 558
 559 void do_freeb(int argc, char *argv[])
 560 {
 561         blk_t block;
 562         int count = 1;
 563
 564         if (common_block_args_process(argc, argv, &block, &count))
 565                 return;
 566         if (check_fs_read_write(argv[0]))
 567                 return;
 568         while (count-- > 0) {
 569                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 570                         com_err(argv[0], 0, "Warning: block %d already clear",
 571                                 block);
 572                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 573                 block++;
 574         }
 575         ext2fs_mark_bb_dirty(current_fs);
 576 }
 577
 578 void do_setb(int argc, char *argv[])
 579 {
 580         blk_t block;
 581         int count = 1;
 582
 583         if (common_block_args_process(argc, argv, &block, &count))
 584                 return;
 585         if (check_fs_read_write(argv[0]))
 586                 return;
 587         while (count-- > 0) {
 588                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 589                         com_err(argv[0], 0, "Warning: block %d already set",
 590                                 block);
 591                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 592                 block++;
 593         }
 594         ext2fs_mark_bb_dirty(current_fs);
 595 }
 596
 597 void do_testb(int argc, char *argv[])
 598 {
 599         blk_t block;
 600         int count = 1;
 601
 602         if (common_block_args_process(argc, argv, &block, &count))
 603                 return;
 604         while (count-- > 0) {
 605                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 606                         printf("Block %d marked in use\n", block);
 607                 else
 608                         printf("Block %d not in use\n", block);
 609                 block++;
 610         }
 611 }
 612
 613 static void modify_u8(char *com, const char *prompt,
 614                       const char *format, __u8 *val)
 615 {
 616         char buf[200];
 617         unsigned long v;
 618         char *tmp;
 619
 620         sprintf(buf, format, *val);
 621         printf("%30s    [%s] ", prompt, buf);
 622         fgets(buf, sizeof(buf), stdin);
 623         if (buf[strlen (buf) - 1] == '\n')
 624                 buf[strlen (buf) - 1] = '\0';
 625         if (!buf[0])
 626                 return;
 627         v = strtoul(buf, &tmp, 0);
 628         if (*tmp)
 629                 com_err(com, 0, "Bad value - %s", buf);
 630         else
 631                 *val = v;
 632 }
 633
 634 static void modify_u16(char *com, const char *prompt,
 635                        const char *format, __u16 *val)
 636 {
 637         char buf[200];
 638         unsigned long v;
 639         char *tmp;
 640
 641         sprintf(buf, format, *val);
 642         printf("%30s    [%s] ", prompt, buf);
 643         fgets(buf, sizeof(buf), stdin);
 644         if (buf[strlen (buf) - 1] == '\n')
 645                 buf[strlen (buf) - 1] = '\0';
 646         if (!buf[0])
 647                 return;
 648         v = strtoul(buf, &tmp, 0);
 649         if (*tmp)
 650                 com_err(com, 0, "Bad value - %s", buf);
 651         else
 652                 *val = v;
 653 }
 654
 655 static void modify_u32(char *com, const char *prompt,
 656                        const char *format, __u32 *val)
 657 {
 658         char buf[200];
 659         unsigned long v;
 660         char *tmp;
 661
 662         sprintf(buf, format, *val);
 663         printf("%30s    [%s] ", prompt, buf);
 664         fgets(buf, sizeof(buf), stdin);
 665         if (buf[strlen (buf) - 1] == '\n')
 666                 buf[strlen (buf) - 1] = '\0';
 667         if (!buf[0])
 668                 return;
 669         v = strtoul(buf, &tmp, 0);
 670         if (*tmp)
 671                 com_err(com, 0, "Bad value - %s", buf);
 672         else
 673                 *val = v;
 674 }
 675
 676
 677 void do_modify_inode(int argc, char *argv[])
 678 {
 679         struct ext2_inode inode;
 680         ext2_ino_t      inode_num;
 681         int             i;
 682         unsigned char   *frag, *fsize;
 683         char            buf[80];
 684         int             os;
 685         const char      *hex_format = "0x%x";
 686         const char      *octal_format = "0%o";
 687         const char      *decimal_format = "%d";
 688
 689         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 690                 return;
 691
 692         os = current_fs->super->s_creator_os;
 693
 694         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 695                 return;
 696
 697         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 698         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 699         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 700         modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
 701         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 702         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 703         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 704         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 705         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 706         modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
 707         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 708         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 709 #if 0
 710         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 711 #endif
 712         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 713         if (LINUX_S_ISDIR(inode.i_mode))
 714                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 715         else
 716                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 717
 718         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 719                 modify_u32(argv[0], "Translator Block",
 720                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 721
 722         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 723         switch (os) {
 724             case EXT2_OS_LINUX:
 725                 frag = &inode.osd2.linux2.l_i_frag;
 726                 fsize = &inode.osd2.linux2.l_i_fsize;
 727                 break;
 728             case EXT2_OS_HURD:
 729                 frag = &inode.osd2.hurd2.h_i_frag;
 730                 fsize = &inode.osd2.hurd2.h_i_fsize;
 731                 break;
 732             case EXT2_OS_MASIX:
 733                 frag = &inode.osd2.masix2.m_i_frag;
 734                 fsize = &inode.osd2.masix2.m_i_fsize;
 735                 break;
 736             default:
 737                 frag = fsize = 0;
 738         }
 739         if (frag)
 740                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 741         if (fsize)
 742                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 743
 744         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 745                 sprintf(buf, "Direct Block #%d", i);
 746                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 747         }
 748         modify_u32(argv[0], "Indirect Block", decimal_format,
 749                     &inode.i_block[EXT2_IND_BLOCK]);
 750         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 751                     &inode.i_block[EXT2_DIND_BLOCK]);
 752         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 753                     &inode.i_block[EXT2_TIND_BLOCK]);
 754         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 755                 return;
 756 }
 757
 758 void do_change_working_dir(int argc, char *argv[])
 759 {
 760         ext2_ino_t      inode;
 761         int             retval;
 762
 763         if (common_inode_args_process(argc, argv, &inode, 0))
 764                 return;
 765
 766         retval = ext2fs_check_directory(current_fs, inode);
 767         if (retval) {
 768                 com_err(argv[1], retval, "");
 769                 return;
 770         }
 771         cwd = inode;
 772         return;
 773 }
 774
 775 void do_print_working_directory(int argc, char *argv[])
 776 {
 777         int     retval;
 778         char    *pathname = NULL;
 779
 780         if (common_args_process(argc, argv, 1, 1,
 781                                 "print_working_directory", "", 0))
 782                 return;
 783
 784         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 785         if (retval) {
 786                 com_err(argv[0], retval,
 787                         "while trying to get pathname of cwd");
 788         }
 789         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 790         free(pathname);
 791         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 792         if (retval) {
 793                 com_err(argv[0], retval,
 794                         "while trying to get pathname of root");
 795         }
 796         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 797         free(pathname);
 798         return;
 799 }
 800
 801 static void make_link(char *sourcename, char *destname)
 802 {
 803         ext2_ino_t      inode;
 804         int             retval;
 805         ext2_ino_t      dir;
 806         char            *dest, *cp, *basename;
 807
 808         /*
 809          * Get the source inode
 810          */
 811         inode = string_to_inode(sourcename);
 812         if (!inode)
 813                 return;
 814         basename = strrchr(sourcename, '/');
 815         if (basename)
 816                 basename++;
 817         else
 818                 basename = sourcename;
 819         /*
 820          * Figure out the destination.  First see if it exists and is
 821          * a directory.
 822          */
 823         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
 824                 dest = basename;
 825         else {
 826                 /*
 827                  * OK, it doesn't exist.  See if it is
 828                  * '<dir>/basename' or 'basename'
 829                  */
 830                 cp = strrchr(destname, '/');
 831                 if (cp) {
 832                         *cp = 0;
 833                         dir = string_to_inode(destname);
 834                         if (!dir)
 835                                 return;
 836                         dest = cp+1;
 837                 } else {
 838                         dir = cwd;
 839                         dest = destname;
 840                 }
 841         }
 842
 843         retval = ext2fs_link(current_fs, dir, dest, inode, 0);
 844         if (retval)
 845                 com_err("make_link", retval, "");
 846         return;
 847 }
 848
 849
 850 void do_link(int argc, char *argv[])
 851 {
 852         if (common_args_process(argc, argv, 3, 3, "link",
 853                                 "<source file> <dest_name>", CHECK_FS_RW))
 854                 return;
 855
 856         make_link(argv[1], argv[2]);
 857 }
 858
 859 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 860                             int blockcnt, void *private)
 861 {
 862         blk_t   block;
 863
 864         block = *blocknr;
 865         ext2fs_block_alloc_stats(fs, block, +1);
 866         return 0;
 867 }
 868
 869 void do_undel(int argc, char *argv[])
 870 {
 871         ext2_ino_t      ino;
 872         struct ext2_inode inode;
 873
 874         if (common_args_process(argc, argv, 3, 3, "undelete",
 875                                 "<inode_num> <dest_name>",
 876                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
 877                 return;
 878
 879         ino = string_to_inode(argv[1]);
 880         if (!ino)
 881                 return;
 882
 883         if (debugfs_read_inode(ino, &inode, argv[1]))
 884                 return;
 885
 886         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
 887                 com_err(argv[1], 0, "Inode is not marked as deleted");
 888                 return;
 889         }
 890
 891         /*
 892          * XXX this function doesn't handle changing the links count on the
 893          * parent directory when undeleting a directory.
 894          */
 895         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
 896         inode.i_dtime = 0;
 897
 898         if (debugfs_write_inode(ino, &inode, argv[0]))
 899                 return;
 900
 901         ext2fs_block_iterate(current_fs, ino, 0, NULL,
 902                              mark_blocks_proc, NULL);
 903
 904         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
 905
 906         make_link(argv[1], argv[2]);
 907 }
 908
 909 static void unlink_file_by_name(char *filename)
 910 {
 911         int             retval;
 912         ext2_ino_t      dir;
 913         char            *basename;
 914
 915         basename = strrchr(filename, '/');
 916         if (basename) {
 917                 *basename++ = '\0';
 918                 dir = string_to_inode(filename);
 919                 if (!dir)
 920                         return;
 921         } else {
 922                 dir = cwd;
 923                 basename = filename;
 924         }
 925         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
 926         if (retval)
 927                 com_err("unlink_file_by_name", retval, "");
 928         return;
 929 }
 930
 931 void do_unlink(int argc, char *argv[])
 932 {
 933         if (common_args_process(argc, argv, 2, 2, "link",
 934                                 "<pathname>", CHECK_FS_RW))
 935                 return;
 936
 937         unlink_file_by_name(argv[1]);
 938 }
 939
 940 void do_find_free_block(int argc, char *argv[])
 941 {
 942         blk_t   free_blk, goal;
 943         int             count;
 944         errcode_t       retval;
 945         char            *tmp;
 946
 947         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
 948                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
 949                 return;
 950         }
 951         if (check_fs_open(argv[0]))
 952                 return;
 953
 954         if (argc > 1) {
 955                 count = strtol(argv[1],&tmp,0);
 956                 if (*tmp) {
 957                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
 958                         return;
 959                 }
 960         } else
 961                 count = 1;
 962
 963         if (argc > 2) {
 964                 goal = strtol(argv[2], &tmp, 0);
 965                 if (*tmp) {
 966                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
 967                         return;
 968                 }
 969         }
 970         else
 971                 goal = current_fs->super->s_first_data_block;
 972
 973         printf("Free blocks found: ");
 974         free_blk = goal - 1;
 975         while (count-- > 0) {
 976                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
 977                                           &free_blk);
 978                 if (retval) {
 979                         com_err("ext2fs_new_block", retval, "");
 980                         return;
 981                 } else
 982                         printf("%d ", free_blk);
 983         }
 984         printf("\n");
 985 }
 986
 987 void do_find_free_inode(int argc, char *argv[])
 988 {
 989         ext2_ino_t      free_inode, dir;
 990         int             mode;
 991         int             retval;
 992         char            *tmp;
 993
 994         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
 995                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
 996                 return;
 997         }
 998         if (check_fs_open(argv[0]))
 999                 return;
1000
1001         if (argc > 1) {
1002                 dir = strtol(argv[1], &tmp, 0);
1003                 if (*tmp) {
1004                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1005                         return;
1006                 }
1007         }
1008         else
1009                 dir = root;
1010         if (argc > 2) {
1011                 mode = strtol(argv[2], &tmp, 0);
1012                 if (*tmp) {
1013                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1014                         return;
1015                 }
1016         } else
1017                 mode = 010755;
1018
1019         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1020         if (retval)
1021                 com_err("ext2fs_new_inode", retval, "");
1022         else
1023                 printf("Free inode found: %u\n", free_inode);
1024 }
1025
1026 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1027 {
1028         ext2_file_t     e2_file;
1029         errcode_t       retval;
1030         int             got;
1031         unsigned int    written;
1032         char            buf[8192];
1033         char            *ptr;
1034
1035         retval = ext2fs_file_open(current_fs, newfile,
1036                                   EXT2_FILE_WRITE, &e2_file);
1037         if (retval)
1038                 return retval;
1039
1040         while (1) {
1041                 got = read(fd, buf, sizeof(buf));
1042                 if (got == 0)
1043                         break;
1044                 if (got < 0) {
1045                         retval = errno;
1046                         goto fail;
1047                 }
1048                 ptr = buf;
1049                 while (got > 0) {
1050                         retval = ext2fs_file_write(e2_file, ptr,
1051                                                    got, &written);
1052                         if (retval)
1053                                 goto fail;
1054
1055                         got -= written;
1056                         ptr += written;
1057                 }
1058         }
1059         retval = ext2fs_file_close(e2_file);
1060         return retval;
1061
1062 fail:
1063         (void) ext2fs_file_close(e2_file);
1064         return retval;
1065 }
1066
1067
1068 void do_write(int argc, char *argv[])
1069 {
1070         int             fd;
1071         struct stat     statbuf;
1072         ext2_ino_t      newfile;
1073         errcode_t       retval;
1074         struct ext2_inode inode;
1075
1076         if (common_args_process(argc, argv, 3, 3, "write",
1077                                 "<native file> <new file>", CHECK_FS_RW))
1078                 return;
1079
1080         fd = open(argv[1], O_RDONLY);
1081         if (fd < 0) {
1082                 com_err(argv[1], errno, "");
1083                 return;
1084         }
1085         if (fstat(fd, &statbuf) < 0) {
1086                 com_err(argv[1], errno, "");
1087                 close(fd);
1088                 return;
1089         }
1090
1091         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1092         if (retval == 0) {
1093                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1094                 close(fd);
1095                 return;
1096         }
1097
1098         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1099         if (retval) {
1100                 com_err(argv[0], retval, "");
1101                 close(fd);
1102                 return;
1103         }
1104         printf("Allocated inode: %u\n", newfile);
1105         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1106                              EXT2_FT_REG_FILE);
1107         if (retval) {
1108                 com_err(argv[2], retval, "");
1109                 close(fd);
1110                 return;
1111         }
1112         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1113                 com_err(argv[0], 0, "Warning: inode already set");
1114         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1115         memset(&inode, 0, sizeof(inode));
1116         inode.i_mode = statbuf.st_mode;
1117         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1118         inode.i_links_count = 1;
1119         inode.i_size = statbuf.st_size;
1120         if (debugfs_write_inode(newfile, &inode, argv[0])) {
1121                 close(fd);
1122                 return;
1123         }
1124         if (LINUX_S_ISREG(inode.i_mode)) {
1125                 retval = copy_file(fd, newfile);
1126                 if (retval)
1127                         com_err("copy_file", retval, "");
1128         }
1129         close(fd);
1130 }
1131
1132 void do_mknod(int argc, char *argv[])
1133 {
1134         unsigned long   mode, major, minor, nr;
1135         ext2_ino_t      newfile;
1136         errcode_t       retval;
1137         struct ext2_inode inode;
1138         int             filetype;
1139
1140         if (check_fs_open(argv[0]))
1141                 return;
1142         if (argc < 3 || argv[2][1]) {
1143         usage:
1144                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1145                 return;
1146         }
1147         mode = minor = major = 0;
1148         switch (argv[2][0]) {
1149                 case 'p':
1150                         mode = LINUX_S_IFIFO;
1151                         filetype = EXT2_FT_FIFO;
1152                         nr = 3;
1153                         break;
1154                 case 'c':
1155                         mode = LINUX_S_IFCHR;
1156                         filetype = EXT2_FT_CHRDEV;
1157                         nr = 5;
1158                         break;
1159                 case 'b':
1160                         mode = LINUX_S_IFBLK;
1161                         filetype = EXT2_FT_BLKDEV;
1162                         nr = 5;
1163                         break;
1164                 default:
1165                         filetype = 0;
1166                         nr = 0;
1167         }
1168         if (nr == 5) {
1169                 major = strtoul(argv[3], argv+3, 0);
1170                 minor = strtoul(argv[4], argv+4, 0);
1171                 if (major > 255 || minor > 255 || argv[3][0] || argv[4][0])
1172                         nr = 0;
1173         }
1174         if (argc != nr)
1175                 goto usage;
1176         if (check_fs_read_write(argv[0]))
1177                 return;
1178         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1179         if (retval) {
1180                 com_err(argv[0], retval, "");
1181                 return;
1182         }
1183         printf("Allocated inode: %u\n", newfile);
1184         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1185         if (retval) {
1186                 if (retval == EXT2_ET_DIR_NO_SPACE) {
1187                         retval = ext2fs_expand_dir(current_fs, cwd);
1188                         if (!retval)
1189                                 retval = ext2fs_link(current_fs, cwd,
1190                                                      argv[1], newfile,
1191                                                      filetype);
1192                 }
1193                 if (retval) {
1194                         com_err(argv[1], retval, "");
1195                         return;
1196                 }
1197         }
1198         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1199                 com_err(argv[0], 0, "Warning: inode already set");
1200         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1201         ext2fs_mark_ib_dirty(current_fs);
1202         memset(&inode, 0, sizeof(inode));
1203         inode.i_mode = mode;
1204         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1205         inode.i_block[0] = major*256+minor;
1206         inode.i_links_count = 1;
1207         if (debugfs_write_inode(newfile, &inode, argv[0]))
1208                 return;
1209 }
1210
1211 void do_mkdir(int argc, char *argv[])
1212 {
1213         char    *cp;
1214         ext2_ino_t      parent;
1215         char    *name;
1216         errcode_t retval;
1217
1218         if (common_args_process(argc, argv, 2, 2, "mkdir",
1219                                 "<filename>", CHECK_FS_RW))
1220                 return;
1221
1222         cp = strrchr(argv[1], '/');
1223         if (cp) {
1224                 *cp = 0;
1225                 parent = string_to_inode(argv[1]);
1226                 if (!parent) {
1227                         com_err(argv[1], ENOENT, "");
1228                         return;
1229                 }
1230                 name = cp+1;
1231         } else {
1232                 parent = cwd;
1233                 name = argv[1];
1234         }
1235
1236
1237         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1238         if (retval) {
1239                 com_err("ext2fs_mkdir", retval, "");
1240                 return;
1241         }
1242
1243 }
1244
1245 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1246                                int blockcnt, void *private)
1247 {
1248         blk_t   block;
1249
1250         block = *blocknr;
1251         ext2fs_block_alloc_stats(fs, block, -1);
1252         return 0;
1253 }
1254
1255 static void kill_file_by_inode(ext2_ino_t inode)
1256 {
1257         struct ext2_inode inode_buf;
1258
1259         if (debugfs_read_inode(inode, &inode_buf, 0))
1260                 return;
1261         inode_buf.i_dtime = time(NULL);
1262         if (debugfs_write_inode(inode, &inode_buf, 0))
1263                 return;
1264
1265         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1266                              release_blocks_proc, NULL);
1267         printf("\n");
1268         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1269                                   LINUX_S_ISDIR(inode_buf.i_mode));
1270 }
1271
1272
1273 void do_kill_file(int argc, char *argv[])
1274 {
1275         ext2_ino_t inode_num;
1276
1277         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1278                 return;
1279
1280         kill_file_by_inode(inode_num);
1281 }
1282
1283 void do_rm(int argc, char *argv[])
1284 {
1285         int retval;
1286         ext2_ino_t inode_num;
1287         struct ext2_inode inode;
1288
1289         if (common_args_process(argc, argv, 2, 2, "rm",
1290                                 "<filename>", CHECK_FS_RW))
1291                 return;
1292
1293         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1294         if (retval) {
1295                 com_err(argv[0], retval, "while trying to resolve filename");
1296                 return;
1297         }
1298
1299         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1300                 return;
1301
1302         if (LINUX_S_ISDIR(inode.i_mode)) {
1303                 com_err(argv[0], 0, "file is a directory");
1304                 return;
1305         }
1306
1307         --inode.i_links_count;
1308         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1309                 return;
1310
1311         unlink_file_by_name(argv[1]);
1312         if (inode.i_links_count == 0)
1313                 kill_file_by_inode(inode_num);
1314 }
1315
1316 struct rd_struct {
1317         ext2_ino_t      parent;
1318         int             empty;
1319 };
1320
1321 static int rmdir_proc(ext2_ino_t dir,
1322                       int       entry,
1323                       struct ext2_dir_entry *dirent,
1324                       int       offset,
1325                       int       blocksize,
1326                       char      *buf,
1327                       void      *private)
1328 {
1329         struct rd_struct *rds = (struct rd_struct *) private;
1330
1331         if (dirent->inode == 0)
1332                 return 0;
1333         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1334                 return 0;
1335         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1336             (dirent->name[1] == '.')) {
1337                 rds->parent = dirent->inode;
1338                 return 0;
1339         }
1340         rds->empty = 0;
1341         return 0;
1342 }
1343
1344 void do_rmdir(int argc, char *argv[])
1345 {
1346         int retval;
1347         ext2_ino_t inode_num;
1348         struct ext2_inode inode;
1349         struct rd_struct rds;
1350
1351         if (common_args_process(argc, argv, 2, 2, "rmdir",
1352                                 "<filename>", CHECK_FS_RW))
1353                 return;
1354
1355         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1356         if (retval) {
1357                 com_err(argv[0], retval, "while trying to resolve filename");
1358                 return;
1359         }
1360
1361         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1362                 return;
1363
1364         if (!LINUX_S_ISDIR(inode.i_mode)) {
1365                 com_err(argv[0], 0, "file is not a directory");
1366                 return;
1367         }
1368
1369         rds.parent = 0;
1370         rds.empty = 1;
1371
1372         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1373                                     0, rmdir_proc, &rds);
1374         if (retval) {
1375                 com_err(argv[0], retval, "while iterating over directory");
1376                 return;
1377         }
1378         if (rds.empty == 0) {
1379                 com_err(argv[0], 0, "directory not empty");
1380                 return;
1381         }
1382
1383         inode.i_links_count = 0;
1384         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1385                 return;
1386
1387         unlink_file_by_name(argv[1]);
1388         kill_file_by_inode(inode_num);
1389
1390         if (rds.parent) {
1391                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1392                         return;
1393                 if (inode.i_links_count > 1)
1394                         inode.i_links_count--;
1395                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1396                         return;
1397         }
1398 }
1399
1400 void do_show_debugfs_params(int argc, char *argv[])
1401 {
1402         FILE *out = stdout;
1403
1404         if (current_fs)
1405                 fprintf(out, "Open mode: read-%s\n",
1406                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1407         fprintf(out, "Filesystem in use: %s\n",
1408                 current_fs ? current_fs->device_name : "--none--");
1409 }
1410
1411 void do_expand_dir(int argc, char *argv[])
1412 {
1413         ext2_ino_t inode;
1414         int retval;
1415
1416         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1417                 return;
1418
1419         retval = ext2fs_expand_dir(current_fs, inode);
1420         if (retval)
1421                 com_err("ext2fs_expand_dir", retval, "");
1422         return;
1423 }
1424
1425 void do_features(int argc, char *argv[])
1426 {
1427         int     i;
1428
1429         if (check_fs_open(argv[0]))
1430                 return;
1431
1432         if ((argc != 1) && check_fs_read_write(argv[0]))
1433                 return;
1434         for (i=1; i < argc; i++) {
1435                 if (e2p_edit_feature(argv[i],
1436                                      &current_fs->super->s_feature_compat, 0))
1437                         com_err(argv[0], 0, "Unknown feature: %s\n",
1438                                 argv[i]);
1439                 else
1440                         ext2fs_mark_super_dirty(current_fs);
1441         }
1442         print_features(current_fs->super, stdout);
1443 }
1444
1445 void do_bmap(int argc, char *argv[])
1446 {
1447         ext2_ino_t      ino;
1448         blk_t           blk, pblk;
1449         int             err;
1450         errcode_t       errcode;
1451
1452         if (common_args_process(argc, argv, 3, 3, argv[0],
1453                                 "<file> logical_blk", 0))
1454                 return;
1455
1456         ino = string_to_inode(argv[1]);
1457         if (!ino)
1458                 return;
1459         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1460
1461         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1462         if (errcode) {
1463                 com_err("argv[0]", errcode,
1464                         "while mapping logical block %d\n", blk);
1465                 return;
1466         }
1467         printf("%d\n", pblk);
1468 }
1469
1470 void do_imap(int argc, char *argv[])
1471 {
1472         ext2_ino_t      ino;
1473         unsigned long   group, block, block_nr, offset;
1474
1475         if (common_args_process(argc, argv, 2, 2, argv[0],
1476                                 "<file>", 0))
1477                 return;
1478         ino = string_to_inode(argv[1]);
1479         if (!ino)
1480                 return;
1481
1482         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1483         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1484                 EXT2_INODE_SIZE(current_fs->super);
1485         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1486         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1487                 com_err(argv[0], 0, "Inode table for group %d is missing\n",
1488                         group);
1489                 return;
1490         }
1491         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1492                 block;
1493         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1494
1495         printf("Inode %d is part of block group %lu\n"
1496                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1497                block_nr, offset);
1498
1499 }
1500
1501
1502
1503 static int source_file(const char *cmd_file, int sci_idx)
1504 {
1505         FILE            *f;
1506         char            buf[256];
1507         char            *cp;
1508         int             exit_status = 0;
1509         int             retval;
1510
1511         if (strcmp(cmd_file, "-") == 0)
1512                 f = stdin;
1513         else {
1514                 f = fopen(cmd_file, "r");
1515                 if (!f) {
1516                         perror(cmd_file);
1517                         exit(1);
1518                 }
1519         }
1520         setbuf(stdout, NULL);
1521         setbuf(stderr, NULL);
1522         while (!feof(f)) {
1523                 if (fgets(buf, sizeof(buf), f) == NULL)
1524                         break;
1525                 cp = strchr(buf, '\n');
1526                 if (cp)
1527                         *cp = 0;
1528                 cp = strchr(buf, '\r');
1529                 if (cp)
1530                         *cp = 0;
1531                 printf("debugfs: %s\n", buf);
1532                 retval = ss_execute_line(sci_idx, buf);
1533                 if (retval) {
1534                         ss_perror(sci_idx, retval, buf);
1535                         exit_status++;
1536                 }
1537         }
1538         return exit_status;
1539 }
1540
1541 int main(int argc, char **argv)
1542 {
1543         int             retval;
1544         int             sci_idx;
1545         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1546         int             c;
1547         int             open_flags = 0;
1548         char            *request = 0;
1549         int             exit_status = 0;
1550         char            *cmd_file = 0;
1551         blk_t           superblock = 0;
1552         blk_t           blocksize = 0;
1553         int             catastrophic = 0;
1554
1555         initialize_ext2_error_table();
1556         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1557                  E2FSPROGS_DATE);
1558
1559         while ((c = getopt (argc, argv, "iwcR:f:b:s:V")) != EOF) {
1560                 switch (c) {
1561                 case 'R':
1562                         request = optarg;
1563                         break;
1564                 case 'f':
1565                         cmd_file = optarg;
1566                         break;
1567                 case 'i':
1568                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1569                         break;
1570                 case 'w':
1571                         open_flags |= EXT2_FLAG_RW;
1572                         break;
1573                 case 'b':
1574                         blocksize = parse_ulong(optarg, argv[0],
1575                                                 "block size", 0);
1576                         break;
1577                 case 's':
1578                         superblock = parse_ulong(optarg, argv[0],
1579                                                  "superblock number", 0);
1580                         break;
1581                 case 'c':
1582                         catastrophic = 1;
1583                         break;
1584                 case 'V':
1585                         /* Print version number and exit */
1586                         fprintf(stderr, "\tUsing %s\n",
1587                                 error_message(EXT2_ET_BASE));
1588                         exit(0);
1589                 default:
1590                         com_err(argv[0], 0, usage);
1591                         return 1;
1592                 }
1593         }
1594         if (optind < argc)
1595                 open_filesystem(argv[optind], open_flags,
1596                                 superblock, blocksize, catastrophic);
1597
1598         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1599                                        &debug_cmds, &retval);
1600         if (retval) {
1601                 ss_perror(sci_idx, retval, "creating invocation");
1602                 exit(1);
1603         }
1604         ss_get_readline(sci_idx);
1605
1606         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1607         if (retval) {
1608                 ss_perror(sci_idx, retval, "adding standard requests");
1609                 exit (1);
1610         }
1611         if (request) {
1612                 retval = 0;
1613                 retval = ss_execute_line(sci_idx, request);
1614                 if (retval) {
1615                         ss_perror(sci_idx, retval, request);
1616                         exit_status++;
1617                 }
1618         } else if (cmd_file) {
1619                 exit_status = source_file(cmd_file, sci_idx);
1620         } else {
1621                 ss_listen(sci_idx);
1622         }
1623
1624         if (current_fs)
1625                 close_filesystem();
1626
1627         return exit_status;
1628 }