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_OPTRESET
  24 extern int optreset;            /* defined by BSD, but not others */
  25 #endif
  26 #ifdef HAVE_ERRNO_H
  27 #include <errno.h>
  28 #endif
  29 #include <fcntl.h>
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32
  33 #include "et/com_err.h"
  34 #include "ss/ss.h"
  35 #include "debugfs.h"
  36 #include "uuid/uuid.h"
  37 #include "e2p/e2p.h"
  38
  39 #include "../version.h"
  40
  41 extern ss_request_table debug_cmds;
  42
  43 ext2_filsys     current_fs = NULL;
  44 ext2_ino_t      root, cwd;
  45
  46 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  47                             blk_t blocksize, int catastrophic)
  48 {
  49         int     retval;
  50
  51         if (superblock != 0 && blocksize == 0) {
  52                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  53                 current_fs = NULL;
  54                 return;
  55         }
  56
  57         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  58                 com_err(device, 0,
  59                         "opening read-only because of catastrophic mode");
  60                 open_flags &= ~EXT2_FLAG_RW;
  61         }
  62
  63         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  64                              unix_io_manager, &current_fs);
  65         if (retval) {
  66                 com_err(device, retval, "while opening filesystem");
  67                 current_fs = NULL;
  68                 return;
  69         }
  70
  71         if (catastrophic)
  72                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  73         else {
  74                 retval = ext2fs_read_inode_bitmap(current_fs);
  75                 if (retval) {
  76                         com_err(device, retval, "while reading inode bitmap");
  77                         goto errout;
  78                 }
  79                 retval = ext2fs_read_block_bitmap(current_fs);
  80                 if (retval) {
  81                         com_err(device, retval, "while reading block bitmap");
  82                         goto errout;
  83                 }
  84         }
  85         root = cwd = EXT2_ROOT_INO;
  86         return;
  87
  88 errout:
  89         retval = ext2fs_close(current_fs);
  90         if (retval)
  91                 com_err(device, retval, "while trying to close filesystem");
  92         current_fs = NULL;
  93 }
  94
  95 void do_open_filesys(int argc, char **argv)
  96 {
  97         const char *usage = "Usage: open [-s superblock] [-b blocksize] [-c] [-w] <device>";
  98         int     c, err;
  99         int     catastrophic = 0;
 100         blk_t   superblock = 0;
 101         blk_t   blocksize = 0;
 102         int open_flags = 0;
 103
 104         optind = 1;
 105 #ifdef HAVE_OPTRESET
 106         optreset = 1;           /* Makes BSD getopt happy */
 107 #endif
 108         while ((c = getopt (argc, argv, "iwfcb:s:")) != EOF) {
 109                 switch (c) {
 110                 case 'i':
 111                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 112                         break;
 113                 case 'w':
 114                         open_flags |= EXT2_FLAG_RW;
 115                         break;
 116                 case 'f':
 117                         open_flags |= EXT2_FLAG_FORCE;
 118                         break;
 119                 case 'c':
 120                         catastrophic = 1;
 121                         break;
 122                 case 'b':
 123                         blocksize = parse_ulong(optarg, argv[0],
 124                                                 "block size", &err);
 125                         if (err)
 126                                 return;
 127                         break;
 128                 case 's':
 129                         superblock = parse_ulong(optarg, argv[0],
 130                                                  "superblock number", &err);
 131                         if (err)
 132                                 return;
 133                         break;
 134                 default:
 135                         com_err(argv[0], 0, usage);
 136                         return;
 137                 }
 138         }
 139         if (optind != argc-1) {
 140                 com_err(argv[0], 0, usage);
 141                 return;
 142         }
 143         if (check_fs_not_open(argv[0]))
 144                 return;
 145         open_filesystem(argv[optind], open_flags,
 146                         superblock, blocksize, catastrophic);
 147 }
 148
 149 void do_lcd(int argc, char **argv)
 150 {
 151         if (common_args_process(argc, argv, 2, 2, "lcd",
 152                                 "<native dir>", 0))
 153                 return;
 154
 155         if (chdir(argv[1]) == -1) {
 156                 com_err(argv[0], errno,
 157                         "while trying to change native directory to %s",
 158                         argv[1]);
 159                 return;
 160         }
 161 }
 162
 163 static void close_filesystem(NOARGS)
 164 {
 165         int     retval;
 166
 167         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 168                 retval = ext2fs_write_inode_bitmap(current_fs);
 169                 if (retval)
 170                         com_err("ext2fs_write_inode_bitmap", retval, "");
 171         }
 172         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 173                 retval = ext2fs_write_block_bitmap(current_fs);
 174                 if (retval)
 175                         com_err("ext2fs_write_block_bitmap", retval, "");
 176         }
 177         retval = ext2fs_close(current_fs);
 178         if (retval)
 179                 com_err("ext2fs_close", retval, "");
 180         current_fs = NULL;
 181         return;
 182 }
 183
 184 void do_close_filesys(int argc, char **argv)
 185 {
 186         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 187                 return;
 188         close_filesystem();
 189 }
 190
 191 void do_init_filesys(int argc, char **argv)
 192 {
 193         struct ext2_super_block param;
 194         errcode_t       retval;
 195         int             err;
 196
 197         if (common_args_process(argc, argv, 3, 3, "initialize",
 198                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 199                 return;
 200
 201         memset(&param, 0, sizeof(struct ext2_super_block));
 202         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 203                                            "blocks count", &err);
 204         if (err)
 205                 return;
 206         retval = ext2fs_initialize(argv[1], 0, &param,
 207                                    unix_io_manager, &current_fs);
 208         if (retval) {
 209                 com_err(argv[1], retval, "while initializing filesystem");
 210                 current_fs = NULL;
 211                 return;
 212         }
 213         root = cwd = EXT2_ROOT_INO;
 214         return;
 215 }
 216
 217 static void print_features(struct ext2_super_block * s, FILE *f)
 218 {
 219         int     i, j, printed=0;
 220         __u32   *mask = &s->s_feature_compat, m;
 221
 222         fputs("Filesystem features:", f);
 223         for (i=0; i <3; i++,mask++) {
 224                 for (j=0,m=1; j < 32; j++, m<<=1) {
 225                         if (*mask & m) {
 226                                 fprintf(f, " %s", e2p_feature2string(i, m));
 227                                 printed++;
 228                         }
 229                 }
 230         }
 231         if (printed == 0)
 232                 fputs("(none)", f);
 233         fputs("\n", f);
 234 }
 235
 236 void do_show_super_stats(int argc, char *argv[])
 237 {
 238         int     i;
 239         FILE    *out;
 240         struct ext2_group_desc *gdp;
 241         int     c, header_only = 0;
 242         int     numdirs = 0;
 243         const char *usage = "Usage: show_super [-h]";
 244
 245         optind = 1;
 246 #ifdef HAVE_OPTRESET
 247         optreset = 1;           /* Makes BSD getopt happy */
 248 #endif
 249         while ((c = getopt (argc, argv, "h")) != EOF) {
 250                 switch (c) {
 251                 case 'h':
 252                         header_only++;
 253                         break;
 254                 default:
 255                         com_err(argv[0], 0, usage);
 256                         return;
 257                 }
 258         }
 259         if (optind != argc) {
 260                 com_err(argv[0], 0, usage);
 261                 return;
 262         }
 263         if (check_fs_open(argv[0]))
 264                 return;
 265         out = open_pager();
 266
 267         list_super2(current_fs->super, out);
 268         for (i=0; i < current_fs->group_desc_count; i++)
 269                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 270         fprintf(out, "Directories:              %d\n", numdirs);
 271
 272         if (header_only) {
 273                 close_pager(out);
 274                 return;
 275         }
 276
 277         gdp = &current_fs->group_desc[0];
 278         for (i = 0; i < current_fs->group_desc_count; i++, gdp++)
 279                 fprintf(out, " Group %2d: block bitmap at %d, "
 280                         "inode bitmap at %d, "
 281                         "inode table at %d\n"
 282                         "           %d free %s, "
 283                         "%d free %s, "
 284                         "%d used %s\n",
 285                         i, gdp->bg_block_bitmap,
 286                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 287                         gdp->bg_free_blocks_count,
 288                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 289                         gdp->bg_free_inodes_count,
 290                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 291                         gdp->bg_used_dirs_count,
 292                         gdp->bg_used_dirs_count != 1 ? "directories"
 293                                 : "directory");
 294         close_pager(out);
 295 }
 296
 297 void do_dirty_filesys(int argc, char **argv)
 298 {
 299         if (check_fs_open(argv[0]))
 300                 return;
 301         if (check_fs_read_write(argv[0]))
 302                 return;
 303
 304         if (argv[1] && !strcmp(argv[1], "-clean"))
 305                 current_fs->super->s_state |= EXT2_VALID_FS;
 306         else
 307                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 308         ext2fs_mark_super_dirty(current_fs);
 309 }
 310
 311 struct list_blocks_struct {
 312         FILE            *f;
 313         e2_blkcnt_t     total;
 314         blk_t           first_block, last_block;
 315         e2_blkcnt_t     first_bcnt, last_bcnt;
 316         e2_blkcnt_t     first;
 317 };
 318
 319 static void finish_range(struct list_blocks_struct *lb)
 320 {
 321         if (lb->first_block == 0)
 322                 return;
 323         if (lb->first)
 324                 lb->first = 0;
 325         else
 326                 fprintf(lb->f, ", ");
 327         if (lb->first_block == lb->last_block)
 328                 fprintf(lb->f, "(%lld):%d", lb->first_bcnt, lb->first_block);
 329         else
 330                 fprintf(lb->f, "(%lld-%lld):%d-%d", lb->first_bcnt,
 331                         lb->last_bcnt, lb->first_block, lb->last_block);
 332         lb->first_block = 0;
 333 }
 334
 335 static int list_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 336                             e2_blkcnt_t blockcnt, blk_t ref_block,
 337                             int ref_offset, void *private)
 338 {
 339         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 340
 341         lb->total++;
 342         if (blockcnt >= 0) {
 343                 /*
 344                  * See if we can add on to the existing range (if it exists)
 345                  */
 346                 if (lb->first_block &&
 347                     (lb->last_block+1 == *blocknr) &&
 348                     (lb->last_bcnt+1 == blockcnt)) {
 349                         lb->last_block = *blocknr;
 350                         lb->last_bcnt = blockcnt;
 351                         return 0;
 352                 }
 353                 /*
 354                  * Start a new range.
 355                  */
 356                 finish_range(lb);
 357                 lb->first_block = lb->last_block = *blocknr;
 358                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 359                 return 0;
 360         }
 361         /*
 362          * Not a normal block.  Always force a new range.
 363          */
 364         finish_range(lb);
 365         if (lb->first)
 366                 lb->first = 0;
 367         else
 368                 fprintf(lb->f, ", ");
 369         if (blockcnt == -1)
 370                 fprintf(lb->f, "(IND):%d", *blocknr);
 371         else if (blockcnt == -2)
 372                 fprintf(lb->f, "(DIND):%d", *blocknr);
 373         else if (blockcnt == -3)
 374                 fprintf(lb->f, "(TIND):%d", *blocknr);
 375         return 0;
 376 }
 377
 378
 379 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 380 {
 381         struct list_blocks_struct lb;
 382
 383         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 384         lb.total = 0;
 385         lb.first_block = 0;
 386         lb.f = f;
 387         lb.first = 1;
 388         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 389                              list_blocks_proc, (void *)&lb);
 390         finish_range(&lb);
 391         if (lb.total)
 392                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 393         fprintf(f,"\n");
 394 }
 395
 396
 397 void internal_dump_inode(FILE *out, const char *prefix,
 398                          ext2_ino_t inode_num, struct ext2_inode *inode,
 399                          int do_dump_blocks)
 400 {
 401         const char *i_type;
 402         char frag, fsize;
 403         int os = current_fs->super->s_creator_os;
 404
 405         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 406         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 407         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 408         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 409         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 410         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 411         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 412         else i_type = "bad type";
 413         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 414         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 415                 prefix,
 416                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 417         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 418                 prefix, inode->i_uid, inode->i_gid);
 419         if (LINUX_S_ISREG(inode->i_mode)) {
 420                 __u64 i_size = (inode->i_size |
 421                                 ((unsigned long long)inode->i_size_high << 32));
 422
 423                 fprintf(out, "%lld\n", i_size);
 424         } else
 425                 fprintf(out, "%d\n", inode->i_size);
 426         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 427                 fprintf(out,
 428                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 429                         prefix,
 430                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 431                         inode->osd1.hurd1.h_i_translator);
 432         else
 433                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 434                         prefix,
 435                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 436         fprintf(out, "%sLinks: %d   Blockcount: %d\n",
 437                 prefix, inode->i_links_count, inode->i_blocks);
 438         switch (os) {
 439             case EXT2_OS_LINUX:
 440                 frag = inode->osd2.linux2.l_i_frag;
 441                 fsize = inode->osd2.linux2.l_i_fsize;
 442                 break;
 443             case EXT2_OS_HURD:
 444                 frag = inode->osd2.hurd2.h_i_frag;
 445                 fsize = inode->osd2.hurd2.h_i_fsize;
 446                 break;
 447             case EXT2_OS_MASIX:
 448                 frag = inode->osd2.masix2.m_i_frag;
 449                 fsize = inode->osd2.masix2.m_i_fsize;
 450                 break;
 451             default:
 452                 frag = fsize = 0;
 453         }
 454         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 455                 prefix, inode->i_faddr, frag, fsize);
 456         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 457                 time_to_string(inode->i_ctime));
 458         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 459                 time_to_string(inode->i_atime));
 460         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 461                 time_to_string(inode->i_mtime));
 462         if (inode->i_dtime)
 463           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 464                   time_to_string(inode->i_dtime));
 465         if (LINUX_S_ISLNK(inode->i_mode) && inode->i_blocks == 0)
 466                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 467                         (int) inode->i_size, (char *)inode->i_block);
 468         else if (do_dump_blocks)
 469                 dump_blocks(out, prefix, inode_num);
 470 }
 471
 472 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode inode)
 473 {
 474         FILE    *out;
 475
 476         out = open_pager();
 477         internal_dump_inode(out, "", inode_num, &inode, 1);
 478         close_pager(out);
 479 }
 480
 481 void do_stat(int argc, char *argv[])
 482 {
 483         ext2_ino_t      inode;
 484         struct ext2_inode inode_buf;
 485
 486         if (common_inode_args_process(argc, argv, &inode, 0))
 487                 return;
 488
 489         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 490                 return;
 491
 492         dump_inode(inode,inode_buf);
 493         return;
 494 }
 495
 496 void do_chroot(int argc, char *argv[])
 497 {
 498         ext2_ino_t inode;
 499         int retval;
 500
 501         if (common_inode_args_process(argc, argv, &inode, 0))
 502                 return;
 503
 504         retval = ext2fs_check_directory(current_fs, inode);
 505         if (retval)  {
 506                 com_err(argv[1], retval, "");
 507                 return;
 508         }
 509         root = inode;
 510 }
 511
 512 void do_clri(int argc, char *argv[])
 513 {
 514         ext2_ino_t inode;
 515         struct ext2_inode inode_buf;
 516
 517         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 518                 return;
 519
 520         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 521                 return;
 522         memset(&inode_buf, 0, sizeof(inode_buf));
 523         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 524                 return;
 525 }
 526
 527 void do_freei(int argc, char *argv[])
 528 {
 529         ext2_ino_t inode;
 530
 531         if (common_inode_args_process(argc, argv, &inode,
 532                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 533                 return;
 534
 535         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 536                 com_err(argv[0], 0, "Warning: inode already clear");
 537         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 538         ext2fs_mark_ib_dirty(current_fs);
 539 }
 540
 541 void do_seti(int argc, char *argv[])
 542 {
 543         ext2_ino_t inode;
 544
 545         if (common_inode_args_process(argc, argv, &inode,
 546                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 547                 return;
 548
 549         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 550                 com_err(argv[0], 0, "Warning: inode already set");
 551         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 552         ext2fs_mark_ib_dirty(current_fs);
 553 }
 554
 555 void do_testi(int argc, char *argv[])
 556 {
 557         ext2_ino_t inode;
 558
 559         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 560                 return;
 561
 562         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 563                 printf("Inode %u is marked in use\n", inode);
 564         else
 565                 printf("Inode %u is not in use\n", inode);
 566 }
 567
 568 void do_freeb(int argc, char *argv[])
 569 {
 570         blk_t block;
 571         int count = 1;
 572
 573         if (common_block_args_process(argc, argv, &block, &count))
 574                 return;
 575         if (check_fs_read_write(argv[0]))
 576                 return;
 577         while (count-- > 0) {
 578                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 579                         com_err(argv[0], 0, "Warning: block %d already clear",
 580                                 block);
 581                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 582                 block++;
 583         }
 584         ext2fs_mark_bb_dirty(current_fs);
 585 }
 586
 587 void do_setb(int argc, char *argv[])
 588 {
 589         blk_t block;
 590         int count = 1;
 591
 592         if (common_block_args_process(argc, argv, &block, &count))
 593                 return;
 594         if (check_fs_read_write(argv[0]))
 595                 return;
 596         while (count-- > 0) {
 597                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 598                         com_err(argv[0], 0, "Warning: block %d already set",
 599                                 block);
 600                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 601                 block++;
 602         }
 603         ext2fs_mark_bb_dirty(current_fs);
 604 }
 605
 606 void do_testb(int argc, char *argv[])
 607 {
 608         blk_t block;
 609         int count = 1;
 610
 611         if (common_block_args_process(argc, argv, &block, &count))
 612                 return;
 613         while (count-- > 0) {
 614                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 615                         printf("Block %d marked in use\n", block);
 616                 else
 617                         printf("Block %d not in use\n", block);
 618                 block++;
 619         }
 620 }
 621
 622 static void modify_u8(char *com, const char *prompt,
 623                       const char *format, __u8 *val)
 624 {
 625         char buf[200];
 626         unsigned long v;
 627         char *tmp;
 628
 629         sprintf(buf, format, *val);
 630         printf("%30s    [%s] ", prompt, buf);
 631         fgets(buf, sizeof(buf), stdin);
 632         if (buf[strlen (buf) - 1] == '\n')
 633                 buf[strlen (buf) - 1] = '\0';
 634         if (!buf[0])
 635                 return;
 636         v = strtoul(buf, &tmp, 0);
 637         if (*tmp)
 638                 com_err(com, 0, "Bad value - %s", buf);
 639         else
 640                 *val = v;
 641 }
 642
 643 static void modify_u16(char *com, const char *prompt,
 644                        const char *format, __u16 *val)
 645 {
 646         char buf[200];
 647         unsigned long v;
 648         char *tmp;
 649
 650         sprintf(buf, format, *val);
 651         printf("%30s    [%s] ", prompt, buf);
 652         fgets(buf, sizeof(buf), stdin);
 653         if (buf[strlen (buf) - 1] == '\n')
 654                 buf[strlen (buf) - 1] = '\0';
 655         if (!buf[0])
 656                 return;
 657         v = strtoul(buf, &tmp, 0);
 658         if (*tmp)
 659                 com_err(com, 0, "Bad value - %s", buf);
 660         else
 661                 *val = v;
 662 }
 663
 664 static void modify_u32(char *com, const char *prompt,
 665                        const char *format, __u32 *val)
 666 {
 667         char buf[200];
 668         unsigned long v;
 669         char *tmp;
 670
 671         sprintf(buf, format, *val);
 672         printf("%30s    [%s] ", prompt, buf);
 673         fgets(buf, sizeof(buf), stdin);
 674         if (buf[strlen (buf) - 1] == '\n')
 675                 buf[strlen (buf) - 1] = '\0';
 676         if (!buf[0])
 677                 return;
 678         v = strtoul(buf, &tmp, 0);
 679         if (*tmp)
 680                 com_err(com, 0, "Bad value - %s", buf);
 681         else
 682                 *val = v;
 683 }
 684
 685
 686 void do_modify_inode(int argc, char *argv[])
 687 {
 688         struct ext2_inode inode;
 689         ext2_ino_t      inode_num;
 690         int             i;
 691         unsigned char   *frag, *fsize;
 692         char            buf[80];
 693         int             os;
 694         const char      *hex_format = "0x%x";
 695         const char      *octal_format = "0%o";
 696         const char      *decimal_format = "%d";
 697
 698         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 699                 return;
 700
 701         os = current_fs->super->s_creator_os;
 702
 703         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 704                 return;
 705
 706         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 707         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 708         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 709         modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
 710         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 711         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 712         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 713         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 714         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 715         modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
 716         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 717         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 718 #if 0
 719         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 720 #endif
 721         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 722         if (LINUX_S_ISDIR(inode.i_mode))
 723                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 724         else
 725                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 726
 727         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 728                 modify_u32(argv[0], "Translator Block",
 729                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 730
 731         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 732         switch (os) {
 733             case EXT2_OS_LINUX:
 734                 frag = &inode.osd2.linux2.l_i_frag;
 735                 fsize = &inode.osd2.linux2.l_i_fsize;
 736                 break;
 737             case EXT2_OS_HURD:
 738                 frag = &inode.osd2.hurd2.h_i_frag;
 739                 fsize = &inode.osd2.hurd2.h_i_fsize;
 740                 break;
 741             case EXT2_OS_MASIX:
 742                 frag = &inode.osd2.masix2.m_i_frag;
 743                 fsize = &inode.osd2.masix2.m_i_fsize;
 744                 break;
 745             default:
 746                 frag = fsize = 0;
 747         }
 748         if (frag)
 749                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 750         if (fsize)
 751                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 752
 753         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 754                 sprintf(buf, "Direct Block #%d", i);
 755                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 756         }
 757         modify_u32(argv[0], "Indirect Block", decimal_format,
 758                     &inode.i_block[EXT2_IND_BLOCK]);
 759         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 760                     &inode.i_block[EXT2_DIND_BLOCK]);
 761         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 762                     &inode.i_block[EXT2_TIND_BLOCK]);
 763         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 764                 return;
 765 }
 766
 767 void do_change_working_dir(int argc, char *argv[])
 768 {
 769         ext2_ino_t      inode;
 770         int             retval;
 771
 772         if (common_inode_args_process(argc, argv, &inode, 0))
 773                 return;
 774
 775         retval = ext2fs_check_directory(current_fs, inode);
 776         if (retval) {
 777                 com_err(argv[1], retval, "");
 778                 return;
 779         }
 780         cwd = inode;
 781         return;
 782 }
 783
 784 void do_print_working_directory(int argc, char *argv[])
 785 {
 786         int     retval;
 787         char    *pathname = NULL;
 788
 789         if (common_args_process(argc, argv, 1, 1,
 790                                 "print_working_directory", "", 0))
 791                 return;
 792
 793         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 794         if (retval) {
 795                 com_err(argv[0], retval,
 796                         "while trying to get pathname of cwd");
 797         }
 798         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 799         free(pathname);
 800         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 801         if (retval) {
 802                 com_err(argv[0], retval,
 803                         "while trying to get pathname of root");
 804         }
 805         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 806         free(pathname);
 807         return;
 808 }
 809
 810 static void make_link(char *sourcename, char *destname)
 811 {
 812         ext2_ino_t      inode;
 813         int             retval;
 814         ext2_ino_t      dir;
 815         char            *dest, *cp, *basename;
 816
 817         /*
 818          * Get the source inode
 819          */
 820         inode = string_to_inode(sourcename);
 821         if (!inode)
 822                 return;
 823         basename = strrchr(sourcename, '/');
 824         if (basename)
 825                 basename++;
 826         else
 827                 basename = sourcename;
 828         /*
 829          * Figure out the destination.  First see if it exists and is
 830          * a directory.
 831          */
 832         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
 833                 dest = basename;
 834         else {
 835                 /*
 836                  * OK, it doesn't exist.  See if it is
 837                  * '<dir>/basename' or 'basename'
 838                  */
 839                 cp = strrchr(destname, '/');
 840                 if (cp) {
 841                         *cp = 0;
 842                         dir = string_to_inode(destname);
 843                         if (!dir)
 844                                 return;
 845                         dest = cp+1;
 846                 } else {
 847                         dir = cwd;
 848                         dest = destname;
 849                 }
 850         }
 851
 852         retval = ext2fs_link(current_fs, dir, dest, inode, 0);
 853         if (retval)
 854                 com_err("make_link", retval, "");
 855         return;
 856 }
 857
 858
 859 void do_link(int argc, char *argv[])
 860 {
 861         if (common_args_process(argc, argv, 3, 3, "link",
 862                                 "<source file> <dest_name>", CHECK_FS_RW))
 863                 return;
 864
 865         make_link(argv[1], argv[2]);
 866 }
 867
 868 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 869                             int blockcnt, void *private)
 870 {
 871         blk_t   block;
 872
 873         block = *blocknr;
 874         ext2fs_block_alloc_stats(fs, block, +1);
 875         return 0;
 876 }
 877
 878 void do_undel(int argc, char *argv[])
 879 {
 880         ext2_ino_t      ino;
 881         struct ext2_inode inode;
 882
 883         if (common_args_process(argc, argv, 3, 3, "undelete",
 884                                 "<inode_num> <dest_name>",
 885                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
 886                 return;
 887
 888         ino = string_to_inode(argv[1]);
 889         if (!ino)
 890                 return;
 891
 892         if (debugfs_read_inode(ino, &inode, argv[1]))
 893                 return;
 894
 895         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
 896                 com_err(argv[1], 0, "Inode is not marked as deleted");
 897                 return;
 898         }
 899
 900         /*
 901          * XXX this function doesn't handle changing the links count on the
 902          * parent directory when undeleting a directory.
 903          */
 904         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
 905         inode.i_dtime = 0;
 906
 907         if (debugfs_write_inode(ino, &inode, argv[0]))
 908                 return;
 909
 910         ext2fs_block_iterate(current_fs, ino, 0, NULL,
 911                              mark_blocks_proc, NULL);
 912
 913         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
 914
 915         make_link(argv[1], argv[2]);
 916 }
 917
 918 static void unlink_file_by_name(char *filename)
 919 {
 920         int             retval;
 921         ext2_ino_t      dir;
 922         char            *basename;
 923
 924         basename = strrchr(filename, '/');
 925         if (basename) {
 926                 *basename++ = '\0';
 927                 dir = string_to_inode(filename);
 928                 if (!dir)
 929                         return;
 930         } else {
 931                 dir = cwd;
 932                 basename = filename;
 933         }
 934         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
 935         if (retval)
 936                 com_err("unlink_file_by_name", retval, "");
 937         return;
 938 }
 939
 940 void do_unlink(int argc, char *argv[])
 941 {
 942         if (common_args_process(argc, argv, 2, 2, "link",
 943                                 "<pathname>", CHECK_FS_RW))
 944                 return;
 945
 946         unlink_file_by_name(argv[1]);
 947 }
 948
 949 void do_find_free_block(int argc, char *argv[])
 950 {
 951         blk_t   free_blk, goal;
 952         int             count;
 953         errcode_t       retval;
 954         char            *tmp;
 955
 956         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
 957                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
 958                 return;
 959         }
 960         if (check_fs_open(argv[0]))
 961                 return;
 962
 963         if (argc > 1) {
 964                 count = strtol(argv[1],&tmp,0);
 965                 if (*tmp) {
 966                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
 967                         return;
 968                 }
 969         } else
 970                 count = 1;
 971
 972         if (argc > 2) {
 973                 goal = strtol(argv[2], &tmp, 0);
 974                 if (*tmp) {
 975                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
 976                         return;
 977                 }
 978         }
 979         else
 980                 goal = current_fs->super->s_first_data_block;
 981
 982         printf("Free blocks found: ");
 983         free_blk = goal - 1;
 984         while (count-- > 0) {
 985                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
 986                                           &free_blk);
 987                 if (retval) {
 988                         com_err("ext2fs_new_block", retval, "");
 989                         return;
 990                 } else
 991                         printf("%d ", free_blk);
 992         }
 993         printf("\n");
 994 }
 995
 996 void do_find_free_inode(int argc, char *argv[])
 997 {
 998         ext2_ino_t      free_inode, dir;
 999         int             mode;
1000         int             retval;
1001         char            *tmp;
1002
1003         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1004                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1005                 return;
1006         }
1007         if (check_fs_open(argv[0]))
1008                 return;
1009
1010         if (argc > 1) {
1011                 dir = strtol(argv[1], &tmp, 0);
1012                 if (*tmp) {
1013                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1014                         return;
1015                 }
1016         }
1017         else
1018                 dir = root;
1019         if (argc > 2) {
1020                 mode = strtol(argv[2], &tmp, 0);
1021                 if (*tmp) {
1022                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1023                         return;
1024                 }
1025         } else
1026                 mode = 010755;
1027
1028         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1029         if (retval)
1030                 com_err("ext2fs_new_inode", retval, "");
1031         else
1032                 printf("Free inode found: %u\n", free_inode);
1033 }
1034
1035 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1036 {
1037         ext2_file_t     e2_file;
1038         errcode_t       retval;
1039         int             got;
1040         unsigned int    written;
1041         char            buf[8192];
1042         char            *ptr;
1043
1044         retval = ext2fs_file_open(current_fs, newfile,
1045                                   EXT2_FILE_WRITE, &e2_file);
1046         if (retval)
1047                 return retval;
1048
1049         while (1) {
1050                 got = read(fd, buf, sizeof(buf));
1051                 if (got == 0)
1052                         break;
1053                 if (got < 0) {
1054                         retval = errno;
1055                         goto fail;
1056                 }
1057                 ptr = buf;
1058                 while (got > 0) {
1059                         retval = ext2fs_file_write(e2_file, ptr,
1060                                                    got, &written);
1061                         if (retval)
1062                                 goto fail;
1063
1064                         got -= written;
1065                         ptr += written;
1066                 }
1067         }
1068         retval = ext2fs_file_close(e2_file);
1069         return retval;
1070
1071 fail:
1072         (void) ext2fs_file_close(e2_file);
1073         return retval;
1074 }
1075
1076
1077 void do_write(int argc, char *argv[])
1078 {
1079         int             fd;
1080         struct stat     statbuf;
1081         ext2_ino_t      newfile;
1082         errcode_t       retval;
1083         struct ext2_inode inode;
1084
1085         if (common_args_process(argc, argv, 3, 3, "write",
1086                                 "<native file> <new file>", CHECK_FS_RW))
1087                 return;
1088
1089         fd = open(argv[1], O_RDONLY);
1090         if (fd < 0) {
1091                 com_err(argv[1], errno, "");
1092                 return;
1093         }
1094         if (fstat(fd, &statbuf) < 0) {
1095                 com_err(argv[1], errno, "");
1096                 close(fd);
1097                 return;
1098         }
1099
1100         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1101         if (retval == 0) {
1102                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1103                 close(fd);
1104                 return;
1105         }
1106
1107         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1108         if (retval) {
1109                 com_err(argv[0], retval, "");
1110                 close(fd);
1111                 return;
1112         }
1113         printf("Allocated inode: %u\n", newfile);
1114         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1115                              EXT2_FT_REG_FILE);
1116         if (retval) {
1117                 com_err(argv[2], retval, "");
1118                 close(fd);
1119                 return;
1120         }
1121         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1122                 com_err(argv[0], 0, "Warning: inode already set");
1123         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1124         memset(&inode, 0, sizeof(inode));
1125         inode.i_mode = statbuf.st_mode;
1126         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1127         inode.i_links_count = 1;
1128         inode.i_size = statbuf.st_size;
1129         if (debugfs_write_inode(newfile, &inode, argv[0])) {
1130                 close(fd);
1131                 return;
1132         }
1133         if (LINUX_S_ISREG(inode.i_mode)) {
1134                 retval = copy_file(fd, newfile);
1135                 if (retval)
1136                         com_err("copy_file", retval, "");
1137         }
1138         close(fd);
1139 }
1140
1141 void do_mknod(int argc, char *argv[])
1142 {
1143         unsigned long   mode, major, minor, nr;
1144         ext2_ino_t      newfile;
1145         errcode_t       retval;
1146         struct ext2_inode inode;
1147         int             filetype;
1148
1149         if (check_fs_open(argv[0]))
1150                 return;
1151         if (argc < 3 || argv[2][1]) {
1152         usage:
1153                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1154                 return;
1155         }
1156         mode = minor = major = 0;
1157         switch (argv[2][0]) {
1158                 case 'p':
1159                         mode = LINUX_S_IFIFO;
1160                         filetype = EXT2_FT_FIFO;
1161                         nr = 3;
1162                         break;
1163                 case 'c':
1164                         mode = LINUX_S_IFCHR;
1165                         filetype = EXT2_FT_CHRDEV;
1166                         nr = 5;
1167                         break;
1168                 case 'b':
1169                         mode = LINUX_S_IFBLK;
1170                         filetype = EXT2_FT_BLKDEV;
1171                         nr = 5;
1172                         break;
1173                 default:
1174                         filetype = 0;
1175                         nr = 0;
1176         }
1177         if (nr == 5) {
1178                 major = strtoul(argv[3], argv+3, 0);
1179                 minor = strtoul(argv[4], argv+4, 0);
1180                 if (major > 255 || minor > 255 || argv[3][0] || argv[4][0])
1181                         nr = 0;
1182         }
1183         if (argc != nr)
1184                 goto usage;
1185         if (check_fs_read_write(argv[0]))
1186                 return;
1187         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1188         if (retval) {
1189                 com_err(argv[0], retval, "");
1190                 return;
1191         }
1192         printf("Allocated inode: %u\n", newfile);
1193         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1194         if (retval) {
1195                 if (retval == EXT2_ET_DIR_NO_SPACE) {
1196                         retval = ext2fs_expand_dir(current_fs, cwd);
1197                         if (!retval)
1198                                 retval = ext2fs_link(current_fs, cwd,
1199                                                      argv[1], newfile,
1200                                                      filetype);
1201                 }
1202                 if (retval) {
1203                         com_err(argv[1], retval, "");
1204                         return;
1205                 }
1206         }
1207         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1208                 com_err(argv[0], 0, "Warning: inode already set");
1209         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1210         ext2fs_mark_ib_dirty(current_fs);
1211         memset(&inode, 0, sizeof(inode));
1212         inode.i_mode = mode;
1213         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1214         inode.i_block[0] = major*256+minor;
1215         inode.i_links_count = 1;
1216         if (debugfs_write_inode(newfile, &inode, argv[0]))
1217                 return;
1218 }
1219
1220 void do_mkdir(int argc, char *argv[])
1221 {
1222         char    *cp;
1223         ext2_ino_t      parent;
1224         char    *name;
1225         errcode_t retval;
1226
1227         if (common_args_process(argc, argv, 2, 2, "mkdir",
1228                                 "<filename>", CHECK_FS_RW))
1229                 return;
1230
1231         cp = strrchr(argv[1], '/');
1232         if (cp) {
1233                 *cp = 0;
1234                 parent = string_to_inode(argv[1]);
1235                 if (!parent) {
1236                         com_err(argv[1], ENOENT, "");
1237                         return;
1238                 }
1239                 name = cp+1;
1240         } else {
1241                 parent = cwd;
1242                 name = argv[1];
1243         }
1244
1245
1246         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1247         if (retval) {
1248                 com_err("ext2fs_mkdir", retval, "");
1249                 return;
1250         }
1251
1252 }
1253
1254 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1255                                int blockcnt, void *private)
1256 {
1257         blk_t   block;
1258
1259         block = *blocknr;
1260         ext2fs_block_alloc_stats(fs, block, -1);
1261         return 0;
1262 }
1263
1264 static void kill_file_by_inode(ext2_ino_t inode)
1265 {
1266         struct ext2_inode inode_buf;
1267
1268         if (debugfs_read_inode(inode, &inode_buf, 0))
1269                 return;
1270         inode_buf.i_dtime = time(NULL);
1271         if (debugfs_write_inode(inode, &inode_buf, 0))
1272                 return;
1273
1274         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1275                              release_blocks_proc, NULL);
1276         printf("\n");
1277         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1278                                   LINUX_S_ISDIR(inode_buf.i_mode));
1279 }
1280
1281
1282 void do_kill_file(int argc, char *argv[])
1283 {
1284         ext2_ino_t inode_num;
1285
1286         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1287                 return;
1288
1289         kill_file_by_inode(inode_num);
1290 }
1291
1292 void do_rm(int argc, char *argv[])
1293 {
1294         int retval;
1295         ext2_ino_t inode_num;
1296         struct ext2_inode inode;
1297
1298         if (common_args_process(argc, argv, 2, 2, "rm",
1299                                 "<filename>", CHECK_FS_RW))
1300                 return;
1301
1302         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1303         if (retval) {
1304                 com_err(argv[0], retval, "while trying to resolve filename");
1305                 return;
1306         }
1307
1308         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1309                 return;
1310
1311         if (LINUX_S_ISDIR(inode.i_mode)) {
1312                 com_err(argv[0], 0, "file is a directory");
1313                 return;
1314         }
1315
1316         --inode.i_links_count;
1317         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1318                 return;
1319
1320         unlink_file_by_name(argv[1]);
1321         if (inode.i_links_count == 0)
1322                 kill_file_by_inode(inode_num);
1323 }
1324
1325 struct rd_struct {
1326         ext2_ino_t      parent;
1327         int             empty;
1328 };
1329
1330 static int rmdir_proc(ext2_ino_t dir,
1331                       int       entry,
1332                       struct ext2_dir_entry *dirent,
1333                       int       offset,
1334                       int       blocksize,
1335                       char      *buf,
1336                       void      *private)
1337 {
1338         struct rd_struct *rds = (struct rd_struct *) private;
1339
1340         if (dirent->inode == 0)
1341                 return 0;
1342         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1343                 return 0;
1344         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1345             (dirent->name[1] == '.')) {
1346                 rds->parent = dirent->inode;
1347                 return 0;
1348         }
1349         rds->empty = 0;
1350         return 0;
1351 }
1352
1353 void do_rmdir(int argc, char *argv[])
1354 {
1355         int retval;
1356         ext2_ino_t inode_num;
1357         struct ext2_inode inode;
1358         struct rd_struct rds;
1359
1360         if (common_args_process(argc, argv, 2, 2, "rmdir",
1361                                 "<filename>", CHECK_FS_RW))
1362                 return;
1363
1364         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1365         if (retval) {
1366                 com_err(argv[0], retval, "while trying to resolve filename");
1367                 return;
1368         }
1369
1370         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1371                 return;
1372
1373         if (!LINUX_S_ISDIR(inode.i_mode)) {
1374                 com_err(argv[0], 0, "file is not a directory");
1375                 return;
1376         }
1377
1378         rds.parent = 0;
1379         rds.empty = 1;
1380
1381         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1382                                     0, rmdir_proc, &rds);
1383         if (retval) {
1384                 com_err(argv[0], retval, "while iterating over directory");
1385                 return;
1386         }
1387         if (rds.empty == 0) {
1388                 com_err(argv[0], 0, "directory not empty");
1389                 return;
1390         }
1391
1392         inode.i_links_count = 0;
1393         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1394                 return;
1395
1396         unlink_file_by_name(argv[1]);
1397         kill_file_by_inode(inode_num);
1398
1399         if (rds.parent) {
1400                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1401                         return;
1402                 if (inode.i_links_count > 1)
1403                         inode.i_links_count--;
1404                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1405                         return;
1406         }
1407 }
1408
1409 void do_show_debugfs_params(int argc, char *argv[])
1410 {
1411         FILE *out = stdout;
1412
1413         if (current_fs)
1414                 fprintf(out, "Open mode: read-%s\n",
1415                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1416         fprintf(out, "Filesystem in use: %s\n",
1417                 current_fs ? current_fs->device_name : "--none--");
1418 }
1419
1420 void do_expand_dir(int argc, char *argv[])
1421 {
1422         ext2_ino_t inode;
1423         int retval;
1424
1425         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1426                 return;
1427
1428         retval = ext2fs_expand_dir(current_fs, inode);
1429         if (retval)
1430                 com_err("ext2fs_expand_dir", retval, "");
1431         return;
1432 }
1433
1434 void do_features(int argc, char *argv[])
1435 {
1436         int     i;
1437
1438         if (check_fs_open(argv[0]))
1439                 return;
1440
1441         if ((argc != 1) && check_fs_read_write(argv[0]))
1442                 return;
1443         for (i=1; i < argc; i++) {
1444                 if (e2p_edit_feature(argv[i],
1445                                      &current_fs->super->s_feature_compat, 0))
1446                         com_err(argv[0], 0, "Unknown feature: %s\n",
1447                                 argv[i]);
1448                 else
1449                         ext2fs_mark_super_dirty(current_fs);
1450         }
1451         print_features(current_fs->super, stdout);
1452 }
1453
1454 void do_bmap(int argc, char *argv[])
1455 {
1456         ext2_ino_t      ino;
1457         blk_t           blk, pblk;
1458         int             err;
1459         errcode_t       errcode;
1460
1461         if (common_args_process(argc, argv, 3, 3, argv[0],
1462                                 "<file> logical_blk", 0))
1463                 return;
1464
1465         ino = string_to_inode(argv[1]);
1466         if (!ino)
1467                 return;
1468         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1469
1470         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1471         if (errcode) {
1472                 com_err("argv[0]", errcode,
1473                         "while mapping logical block %d\n", blk);
1474                 return;
1475         }
1476         printf("%d\n", pblk);
1477 }
1478
1479 void do_imap(int argc, char *argv[])
1480 {
1481         ext2_ino_t      ino;
1482         unsigned long   group, block, block_nr, offset;
1483
1484         if (common_args_process(argc, argv, 2, 2, argv[0],
1485                                 "<file>", 0))
1486                 return;
1487         ino = string_to_inode(argv[1]);
1488         if (!ino)
1489                 return 0;
1490
1491         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1492         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1493                 EXT2_INODE_SIZE(current_fs->super);
1494         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1495         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1496                 com_err(argv[0], 0, "Inode table for group %d is missing\n",
1497                         group);
1498                 return;
1499         }
1500         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1501                 block;
1502         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1503
1504         printf("Inode %d is part of block group %d\n"
1505                "\tlocated at block %d, offset 0x%04x\n", ino, group,
1506                block_nr, offset);
1507
1508 }
1509
1510
1511
1512 static int source_file(const char *cmd_file, int sci_idx)
1513 {
1514         FILE            *f;
1515         char            buf[256];
1516         char            *cp;
1517         int             exit_status = 0;
1518         int             retval;
1519
1520         if (strcmp(cmd_file, "-") == 0)
1521                 f = stdin;
1522         else {
1523                 f = fopen(cmd_file, "r");
1524                 if (!f) {
1525                         perror(cmd_file);
1526                         exit(1);
1527                 }
1528         }
1529         setbuf(stdout, NULL);
1530         setbuf(stderr, NULL);
1531         while (!feof(f)) {
1532                 if (fgets(buf, sizeof(buf), f) == NULL)
1533                         break;
1534                 cp = strchr(buf, '\n');
1535                 if (cp)
1536                         *cp = 0;
1537                 cp = strchr(buf, '\r');
1538                 if (cp)
1539                         *cp = 0;
1540                 printf("debugfs: %s\n", buf);
1541                 retval = ss_execute_line(sci_idx, buf);
1542                 if (retval) {
1543                         ss_perror(sci_idx, retval, buf);
1544                         exit_status++;
1545                 }
1546         }
1547         return exit_status;
1548 }
1549
1550 int main(int argc, char **argv)
1551 {
1552         int             retval;
1553         int             sci_idx;
1554         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1555         int             c;
1556         int             open_flags = 0;
1557         char            *request = 0;
1558         int             exit_status = 0;
1559         char            *cmd_file = 0;
1560         blk_t           superblock = 0;
1561         blk_t           blocksize = 0;
1562         int             catastrophic = 0;
1563
1564         initialize_ext2_error_table();
1565         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1566                  E2FSPROGS_DATE);
1567
1568         while ((c = getopt (argc, argv, "iwcR:f:b:s:V")) != EOF) {
1569                 switch (c) {
1570                 case 'R':
1571                         request = optarg;
1572                         break;
1573                 case 'f':
1574                         cmd_file = optarg;
1575                         break;
1576                 case 'i':
1577                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1578                         break;
1579                 case 'w':
1580                         open_flags |= EXT2_FLAG_RW;
1581                         break;
1582                 case 'b':
1583                         blocksize = parse_ulong(optarg, argv[0],
1584                                                 "block size", 0);
1585                         break;
1586                 case 's':
1587                         superblock = parse_ulong(optarg, argv[0],
1588                                                  "superblock number", 0);
1589                         break;
1590                 case 'c':
1591                         catastrophic = 1;
1592                         break;
1593                 case 'V':
1594                         /* Print version number and exit */
1595                         fprintf(stderr, "\tUsing %s\n",
1596                                 error_message(EXT2_ET_BASE));
1597                         exit(0);
1598                 default:
1599                         com_err(argv[0], 0, usage);
1600                         return 1;
1601                 }
1602         }
1603         if (optind < argc)
1604                 open_filesystem(argv[optind], open_flags,
1605                                 superblock, blocksize, catastrophic);
1606
1607         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1608                                        &debug_cmds, &retval);
1609         if (retval) {
1610                 ss_perror(sci_idx, retval, "creating invocation");
1611                 exit(1);
1612         }
1613         ss_get_readline(sci_idx);
1614
1615         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1616         if (retval) {
1617                 ss_perror(sci_idx, retval, "adding standard requests");
1618                 exit (1);
1619         }
1620         if (request) {
1621                 retval = 0;
1622                 retval = ss_execute_line(sci_idx, request);
1623                 if (retval) {
1624                         ss_perror(sci_idx, retval, request);
1625                         exit_status++;
1626                 }
1627         } else if (cmd_file) {
1628                 exit_status = source_file(cmd_file, sci_idx);
1629         } else {
1630                 ss_listen(sci_idx);
1631         }
1632
1633         if (current_fs)
1634                 close_filesystem();
1635
1636         return exit_status;
1637 }