debugfs/debugfs.c

   1 /*
   2  * debugfs.c --- a program which allows you to attach an ext2fs
   3  * filesystem and play with it.
   4  *
   5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
   6  * under the terms of the GNU Public License.
   7  *
   8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
   9  */
  10
  11 #include <stdio.h>
  12 #include <unistd.h>
  13 #include <stdlib.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #ifdef HAVE_GETOPT_H
  18 #include <getopt.h>
  19 #else
  20 extern int optind;
  21 extern char *optarg;
  22 #endif
  23 #ifdef HAVE_ERRNO_H
  24 #include <errno.h>
  25 #endif
  26 #include <fcntl.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29
  30 #include "et/com_err.h"
  31 #include "ss/ss.h"
  32 #include "debugfs.h"
  33 #include "uuid/uuid.h"
  34 #include "e2p/e2p.h"
  35
  36 #include <ext2fs/ext2_ext_attr.h>
  37
  38 #include "../version.h"
  39
  40 extern ss_request_table debug_cmds;
  41
  42 ext2_filsys     current_fs = NULL;
  43 ext2_ino_t      root, cwd;
  44
  45 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  46                             blk_t blocksize, int catastrophic,
  47                             char *data_filename)
  48 {
  49         int     retval;
  50         io_channel data_io = 0;
  51
  52         if (superblock != 0 && blocksize == 0) {
  53                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  54                 current_fs = NULL;
  55                 return;
  56         }
  57
  58         if (data_filename) {
  59                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  60                         com_err(device, 0,
  61                                 "The -d option is only valid when reading an e2image file");
  62                         current_fs = NULL;
  63                         return;
  64                 }
  65                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  66                 if (retval) {
  67                         com_err(data_filename, 0, "while opening data source");
  68                         current_fs = NULL;
  69                         return;
  70                 }
  71         }
  72
  73         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  74                 com_err(device, 0,
  75                         "opening read-only because of catastrophic mode");
  76                 open_flags &= ~EXT2_FLAG_RW;
  77         }
  78
  79         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  80                              unix_io_manager, &current_fs);
  81         if (retval) {
  82                 com_err(device, retval, "while opening filesystem");
  83                 current_fs = NULL;
  84                 return;
  85         }
  86
  87         if (catastrophic)
  88                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  89         else {
  90                 retval = ext2fs_read_inode_bitmap(current_fs);
  91                 if (retval) {
  92                         com_err(device, retval, "while reading inode bitmap");
  93                         goto errout;
  94                 }
  95                 retval = ext2fs_read_block_bitmap(current_fs);
  96                 if (retval) {
  97                         com_err(device, retval, "while reading block bitmap");
  98                         goto errout;
  99                 }
 100         }
 101
 102         if (data_io) {
 103                 retval = ext2fs_set_data_io(current_fs, data_io);
 104                 if (retval) {
 105                         com_err(device, retval,
 106                                 "while setting data source");
 107                         goto errout;
 108                 }
 109         }
 110
 111         root = cwd = EXT2_ROOT_INO;
 112         return;
 113
 114 errout:
 115         retval = ext2fs_close(current_fs);
 116         if (retval)
 117                 com_err(device, retval, "while trying to close filesystem");
 118         current_fs = NULL;
 119 }
 120
 121 void do_open_filesys(int argc, char **argv)
 122 {
 123         const char *usage = "Usage: open [-s superblock] [-b blocksize] [-c] [-w] <device>";
 124         int     c, err;
 125         int     catastrophic = 0;
 126         blk_t   superblock = 0;
 127         blk_t   blocksize = 0;
 128         int     open_flags = 0;
 129         char    *data_filename = 0;
 130
 131         reset_getopt();
 132         while ((c = getopt (argc, argv, "iwfcb:s:d:")) != EOF) {
 133                 switch (c) {
 134                 case 'i':
 135                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 136                         break;
 137                 case 'w':
 138                         open_flags |= EXT2_FLAG_RW;
 139                         break;
 140                 case 'f':
 141                         open_flags |= EXT2_FLAG_FORCE;
 142                         break;
 143                 case 'c':
 144                         catastrophic = 1;
 145                         break;
 146                 case 'd':
 147                         data_filename = optarg;
 148                         break;
 149                 case 'b':
 150                         blocksize = parse_ulong(optarg, argv[0],
 151                                                 "block size", &err);
 152                         if (err)
 153                                 return;
 154                         break;
 155                 case 's':
 156                         superblock = parse_ulong(optarg, argv[0],
 157                                                  "superblock number", &err);
 158                         if (err)
 159                                 return;
 160                         break;
 161                 default:
 162                         com_err(argv[0], 0, usage);
 163                         return;
 164                 }
 165         }
 166         if (optind != argc-1) {
 167                 com_err(argv[0], 0, usage);
 168                 return;
 169         }
 170         if (check_fs_not_open(argv[0]))
 171                 return;
 172         open_filesystem(argv[optind], open_flags,
 173                         superblock, blocksize, catastrophic,
 174                         data_filename);
 175 }
 176
 177 void do_lcd(int argc, char **argv)
 178 {
 179         if (common_args_process(argc, argv, 2, 2, "lcd",
 180                                 "<native dir>", 0))
 181                 return;
 182
 183         if (chdir(argv[1]) == -1) {
 184                 com_err(argv[0], errno,
 185                         "while trying to change native directory to %s",
 186                         argv[1]);
 187                 return;
 188         }
 189 }
 190
 191 static void close_filesystem(NOARGS)
 192 {
 193         int     retval;
 194
 195         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 196                 retval = ext2fs_write_inode_bitmap(current_fs);
 197                 if (retval)
 198                         com_err("ext2fs_write_inode_bitmap", retval, "");
 199         }
 200         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 201                 retval = ext2fs_write_block_bitmap(current_fs);
 202                 if (retval)
 203                         com_err("ext2fs_write_block_bitmap", retval, "");
 204         }
 205         retval = ext2fs_close(current_fs);
 206         if (retval)
 207                 com_err("ext2fs_close", retval, "");
 208         current_fs = NULL;
 209         return;
 210 }
 211
 212 void do_close_filesys(int argc, char **argv)
 213 {
 214         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 215                 return;
 216         close_filesystem();
 217 }
 218
 219 void do_init_filesys(int argc, char **argv)
 220 {
 221         struct ext2_super_block param;
 222         errcode_t       retval;
 223         int             err;
 224
 225         if (common_args_process(argc, argv, 3, 3, "initialize",
 226                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 227                 return;
 228
 229         memset(&param, 0, sizeof(struct ext2_super_block));
 230         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 231                                            "blocks count", &err);
 232         if (err)
 233                 return;
 234         retval = ext2fs_initialize(argv[1], 0, &param,
 235                                    unix_io_manager, &current_fs);
 236         if (retval) {
 237                 com_err(argv[1], retval, "while initializing filesystem");
 238                 current_fs = NULL;
 239                 return;
 240         }
 241         root = cwd = EXT2_ROOT_INO;
 242         return;
 243 }
 244
 245 static void print_features(struct ext2_super_block * s, FILE *f)
 246 {
 247         int     i, j, printed=0;
 248         __u32   *mask = &s->s_feature_compat, m;
 249
 250         fputs("Filesystem features:", f);
 251         for (i=0; i <3; i++,mask++) {
 252                 for (j=0,m=1; j < 32; j++, m<<=1) {
 253                         if (*mask & m) {
 254                                 fprintf(f, " %s", e2p_feature2string(i, m));
 255                                 printed++;
 256                         }
 257                 }
 258         }
 259         if (printed == 0)
 260                 fputs("(none)", f);
 261         fputs("\n", f);
 262 }
 263
 264 void do_show_super_stats(int argc, char *argv[])
 265 {
 266         dgrp_t  i;
 267         FILE    *out;
 268         struct ext2_group_desc *gdp;
 269         int     c, header_only = 0;
 270         int     numdirs = 0;
 271         const char *usage = "Usage: show_super [-h]";
 272
 273         reset_getopt();
 274         while ((c = getopt (argc, argv, "h")) != EOF) {
 275                 switch (c) {
 276                 case 'h':
 277                         header_only++;
 278                         break;
 279                 default:
 280                         com_err(argv[0], 0, usage);
 281                         return;
 282                 }
 283         }
 284         if (optind != argc) {
 285                 com_err(argv[0], 0, usage);
 286                 return;
 287         }
 288         if (check_fs_open(argv[0]))
 289                 return;
 290         out = open_pager();
 291
 292         list_super2(current_fs->super, out);
 293         for (i=0; i < current_fs->group_desc_count; i++)
 294                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 295         fprintf(out, "Directories:              %d\n", numdirs);
 296
 297         if (header_only) {
 298                 close_pager(out);
 299                 return;
 300         }
 301
 302         gdp = &current_fs->group_desc[0];
 303         for (i = 0; i < current_fs->group_desc_count; i++, gdp++)
 304                 fprintf(out, " Group %2d: block bitmap at %d, "
 305                         "inode bitmap at %d, "
 306                         "inode table at %d\n"
 307                         "           %d free %s, "
 308                         "%d free %s, "
 309                         "%d used %s\n",
 310                         i, gdp->bg_block_bitmap,
 311                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 312                         gdp->bg_free_blocks_count,
 313                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 314                         gdp->bg_free_inodes_count,
 315                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 316                         gdp->bg_used_dirs_count,
 317                         gdp->bg_used_dirs_count != 1 ? "directories"
 318                                 : "directory");
 319         close_pager(out);
 320 }
 321
 322 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 323                       char **argv EXT2FS_ATTR((unused)))
 324 {
 325         if (check_fs_open(argv[0]))
 326                 return;
 327         if (check_fs_read_write(argv[0]))
 328                 return;
 329
 330         if (argv[1] && !strcmp(argv[1], "-clean"))
 331                 current_fs->super->s_state |= EXT2_VALID_FS;
 332         else
 333                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 334         ext2fs_mark_super_dirty(current_fs);
 335 }
 336
 337 struct list_blocks_struct {
 338         FILE            *f;
 339         e2_blkcnt_t     total;
 340         blk_t           first_block, last_block;
 341         e2_blkcnt_t     first_bcnt, last_bcnt;
 342         e2_blkcnt_t     first;
 343 };
 344
 345 static void finish_range(struct list_blocks_struct *lb)
 346 {
 347         if (lb->first_block == 0)
 348                 return;
 349         if (lb->first)
 350                 lb->first = 0;
 351         else
 352                 fprintf(lb->f, ", ");
 353         if (lb->first_block == lb->last_block)
 354                 fprintf(lb->f, "(%lld):%d", lb->first_bcnt, lb->first_block);
 355         else
 356                 fprintf(lb->f, "(%lld-%lld):%d-%d", lb->first_bcnt,
 357                         lb->last_bcnt, lb->first_block, lb->last_block);
 358         lb->first_block = 0;
 359 }
 360
 361 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 362                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 363                             blk_t ref_block EXT2FS_ATTR((unused)),
 364                             int ref_offset EXT2FS_ATTR((unused)),
 365                             void *private)
 366 {
 367         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 368
 369         lb->total++;
 370         if (blockcnt >= 0) {
 371                 /*
 372                  * See if we can add on to the existing range (if it exists)
 373                  */
 374                 if (lb->first_block &&
 375                     (lb->last_block+1 == *blocknr) &&
 376                     (lb->last_bcnt+1 == blockcnt)) {
 377                         lb->last_block = *blocknr;
 378                         lb->last_bcnt = blockcnt;
 379                         return 0;
 380                 }
 381                 /*
 382                  * Start a new range.
 383                  */
 384                 finish_range(lb);
 385                 lb->first_block = lb->last_block = *blocknr;
 386                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 387                 return 0;
 388         }
 389         /*
 390          * Not a normal block.  Always force a new range.
 391          */
 392         finish_range(lb);
 393         if (lb->first)
 394                 lb->first = 0;
 395         else
 396                 fprintf(lb->f, ", ");
 397         if (blockcnt == -1)
 398                 fprintf(lb->f, "(IND):%d", *blocknr);
 399         else if (blockcnt == -2)
 400                 fprintf(lb->f, "(DIND):%d", *blocknr);
 401         else if (blockcnt == -3)
 402                 fprintf(lb->f, "(TIND):%d", *blocknr);
 403         return 0;
 404 }
 405
 406 void dump_xattr_string(FILE *out, const unsigned char *str, int len)
 407 {
 408         int printable = 1;
 409         int i;
 410
 411         /* check is string printable? */
 412         for (i = 0; i < len; i++)
 413                 if (!isprint(str[i])) {
 414                         printable = 0;
 415                         break;
 416                 }
 417
 418         for (i = 0; i < len; i++)
 419                 if (printable)
 420                         fprintf(out, "%c", str[i]);
 421                 else
 422                         fprintf(out, "%02x ", str[i]);
 423 }
 424
 425 void internal_dump_inode_extra(FILE *out, const char *prefix,
 426                          ext2_ino_t inode_num, struct ext2_inode_large *inode)
 427 {
 428         struct ext2_ext_attr_entry *entry;
 429         __u32 *magic;
 430         char *start, *end;
 431         int storage_size;
 432         int i;
 433
 434         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 435                         EXT2_GOOD_OLD_INODE_SIZE) {
 436                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 437                                 inode->i_extra_isize);
 438                 return;
 439         }
 440         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 441                         EXT2_GOOD_OLD_INODE_SIZE -
 442                         inode->i_extra_isize;
 443         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 444                         inode->i_extra_isize);
 445         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 446                 fprintf(out, "Extended attributes stored in inode body: \n");
 447                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 448                 start = (char *) magic + sizeof(__u32);
 449                 entry = (struct ext2_ext_attr_entry *) start;
 450                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 451                         struct ext2_ext_attr_entry *next =
 452                                 EXT2_EXT_ATTR_NEXT(entry);
 453                         if (entry->e_value_size > storage_size ||
 454                                         (char *) next >= end) {
 455                                 fprintf(out, "invalid EA entry in inode\n");
 456                                 return;
 457                         }
 458                         fprintf(out, "  ");
 459                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 460                                           entry->e_name_len);
 461                         fprintf(out, " = \"");
 462                         dump_xattr_string(out, start + entry->e_value_offs,
 463                                                 entry->e_value_size);
 464                         fprintf(out, "\" (%d)\n", entry->e_value_size);
 465                         entry = next;
 466                 }
 467         }
 468 }
 469
 470 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 471 {
 472         struct list_blocks_struct lb;
 473
 474         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 475         lb.total = 0;
 476         lb.first_block = 0;
 477         lb.f = f;
 478         lb.first = 1;
 479         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 480                              list_blocks_proc, (void *)&lb);
 481         finish_range(&lb);
 482         if (lb.total)
 483                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 484         fprintf(f,"\n");
 485 }
 486
 487
 488 void internal_dump_inode(FILE *out, const char *prefix,
 489                          ext2_ino_t inode_num, struct ext2_inode *inode,
 490                          int do_dump_blocks)
 491 {
 492         const char *i_type;
 493         char frag, fsize;
 494         int os = current_fs->super->s_creator_os;
 495
 496         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 497         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 498         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 499         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 500         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 501         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 502         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 503         else i_type = "bad type";
 504         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 505         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 506                 prefix,
 507                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 508         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 509                 prefix, inode->i_uid, inode->i_gid);
 510         if (LINUX_S_ISREG(inode->i_mode)) {
 511                 __u64 i_size = (inode->i_size |
 512                                 ((unsigned long long)inode->i_size_high << 32));
 513
 514                 fprintf(out, "%lld\n", i_size);
 515         } else
 516                 fprintf(out, "%d\n", inode->i_size);
 517         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 518                 fprintf(out,
 519                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 520                         prefix,
 521                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 522                         inode->osd1.hurd1.h_i_translator);
 523         else
 524                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 525                         prefix,
 526                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 527         fprintf(out, "%sLinks: %d   Blockcount: %d\n",
 528                 prefix, inode->i_links_count, inode->i_blocks);
 529         switch (os) {
 530             case EXT2_OS_LINUX:
 531                 frag = inode->osd2.linux2.l_i_frag;
 532                 fsize = inode->osd2.linux2.l_i_fsize;
 533                 break;
 534             case EXT2_OS_HURD:
 535                 frag = inode->osd2.hurd2.h_i_frag;
 536                 fsize = inode->osd2.hurd2.h_i_fsize;
 537                 break;
 538             case EXT2_OS_MASIX:
 539                 frag = inode->osd2.masix2.m_i_frag;
 540                 fsize = inode->osd2.masix2.m_i_fsize;
 541                 break;
 542             default:
 543                 frag = fsize = 0;
 544         }
 545         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 546                 prefix, inode->i_faddr, frag, fsize);
 547         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 548                 time_to_string(inode->i_ctime));
 549         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 550                 time_to_string(inode->i_atime));
 551         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 552                 time_to_string(inode->i_mtime));
 553         if (inode->i_dtime)
 554           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 555                   time_to_string(inode->i_dtime));
 556         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 557                 internal_dump_inode_extra(out, prefix, inode_num,
 558                                           (struct ext2_inode_large *) inode);
 559         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 560                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 561                         (int) inode->i_size, (char *)inode->i_block);
 562         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 563                 int major, minor;
 564                 const char *devnote;
 565
 566                 if (inode->i_block[0]) {
 567                         major = (inode->i_block[0] >> 8) & 255;
 568                         minor = inode->i_block[0] & 255;
 569                         devnote = "";
 570                 } else {
 571                         major = (inode->i_block[1] & 0xfff00) >> 8;
 572                         minor = ((inode->i_block[1] & 0xff) |
 573                                  ((inode->i_block[1] >> 12) & 0xfff00));
 574                         devnote = "(New-style) ";
 575                 }
 576                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 577                         devnote, major, minor, major, minor);
 578         }
 579         else if (do_dump_blocks)
 580                 dump_blocks(out, prefix, inode_num);
 581 }
 582
 583 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 584 {
 585         FILE    *out;
 586
 587         out = open_pager();
 588         internal_dump_inode(out, "", inode_num, inode, 1);
 589         close_pager(out);
 590 }
 591
 592 void do_stat(int argc, char *argv[])
 593 {
 594         ext2_ino_t      inode;
 595         struct ext2_inode * inode_buf;
 596
 597         inode_buf = (struct ext2_inode *)
 598                         malloc(EXT2_INODE_SIZE(current_fs->super));
 599         if (!inode_buf) {
 600                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 601                 return;
 602         }
 603
 604         if (common_inode_args_process(argc, argv, &inode, 0)) {
 605                 free(inode_buf);
 606                 return;
 607         }
 608
 609         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 610                                         EXT2_INODE_SIZE(current_fs->super))) {
 611                 free(inode_buf);
 612                 return;
 613         }
 614
 615         dump_inode(inode, inode_buf);
 616         free(inode_buf);
 617         return;
 618 }
 619
 620 void do_chroot(int argc, char *argv[])
 621 {
 622         ext2_ino_t inode;
 623         int retval;
 624
 625         if (common_inode_args_process(argc, argv, &inode, 0))
 626                 return;
 627
 628         retval = ext2fs_check_directory(current_fs, inode);
 629         if (retval)  {
 630                 com_err(argv[1], retval, "");
 631                 return;
 632         }
 633         root = inode;
 634 }
 635
 636 void do_clri(int argc, char *argv[])
 637 {
 638         ext2_ino_t inode;
 639         struct ext2_inode inode_buf;
 640
 641         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 642                 return;
 643
 644         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 645                 return;
 646         memset(&inode_buf, 0, sizeof(inode_buf));
 647         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 648                 return;
 649 }
 650
 651 void do_freei(int argc, char *argv[])
 652 {
 653         ext2_ino_t inode;
 654
 655         if (common_inode_args_process(argc, argv, &inode,
 656                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 657                 return;
 658
 659         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 660                 com_err(argv[0], 0, "Warning: inode already clear");
 661         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 662         ext2fs_mark_ib_dirty(current_fs);
 663 }
 664
 665 void do_seti(int argc, char *argv[])
 666 {
 667         ext2_ino_t inode;
 668
 669         if (common_inode_args_process(argc, argv, &inode,
 670                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 671                 return;
 672
 673         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 674                 com_err(argv[0], 0, "Warning: inode already set");
 675         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 676         ext2fs_mark_ib_dirty(current_fs);
 677 }
 678
 679 void do_testi(int argc, char *argv[])
 680 {
 681         ext2_ino_t inode;
 682
 683         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 684                 return;
 685
 686         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 687                 printf("Inode %u is marked in use\n", inode);
 688         else
 689                 printf("Inode %u is not in use\n", inode);
 690 }
 691
 692 void do_freeb(int argc, char *argv[])
 693 {
 694         blk_t block;
 695         int count = 1;
 696
 697         if (common_block_args_process(argc, argv, &block, &count))
 698                 return;
 699         if (check_fs_read_write(argv[0]))
 700                 return;
 701         while (count-- > 0) {
 702                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 703                         com_err(argv[0], 0, "Warning: block %d already clear",
 704                                 block);
 705                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 706                 block++;
 707         }
 708         ext2fs_mark_bb_dirty(current_fs);
 709 }
 710
 711 void do_setb(int argc, char *argv[])
 712 {
 713         blk_t block;
 714         int count = 1;
 715
 716         if (common_block_args_process(argc, argv, &block, &count))
 717                 return;
 718         if (check_fs_read_write(argv[0]))
 719                 return;
 720         while (count-- > 0) {
 721                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 722                         com_err(argv[0], 0, "Warning: block %d already set",
 723                                 block);
 724                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 725                 block++;
 726         }
 727         ext2fs_mark_bb_dirty(current_fs);
 728 }
 729
 730 void do_testb(int argc, char *argv[])
 731 {
 732         blk_t block;
 733         int count = 1;
 734
 735         if (common_block_args_process(argc, argv, &block, &count))
 736                 return;
 737         while (count-- > 0) {
 738                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 739                         printf("Block %d marked in use\n", block);
 740                 else
 741                         printf("Block %d not in use\n", block);
 742                 block++;
 743         }
 744 }
 745
 746 static void modify_u8(char *com, const char *prompt,
 747                       const char *format, __u8 *val)
 748 {
 749         char buf[200];
 750         unsigned long v;
 751         char *tmp;
 752
 753         sprintf(buf, format, *val);
 754         printf("%30s    [%s] ", prompt, buf);
 755         fgets(buf, sizeof(buf), stdin);
 756         if (buf[strlen (buf) - 1] == '\n')
 757                 buf[strlen (buf) - 1] = '\0';
 758         if (!buf[0])
 759                 return;
 760         v = strtoul(buf, &tmp, 0);
 761         if (*tmp)
 762                 com_err(com, 0, "Bad value - %s", buf);
 763         else
 764                 *val = v;
 765 }
 766
 767 static void modify_u16(char *com, const char *prompt,
 768                        const char *format, __u16 *val)
 769 {
 770         char buf[200];
 771         unsigned long v;
 772         char *tmp;
 773
 774         sprintf(buf, format, *val);
 775         printf("%30s    [%s] ", prompt, buf);
 776         fgets(buf, sizeof(buf), stdin);
 777         if (buf[strlen (buf) - 1] == '\n')
 778                 buf[strlen (buf) - 1] = '\0';
 779         if (!buf[0])
 780                 return;
 781         v = strtoul(buf, &tmp, 0);
 782         if (*tmp)
 783                 com_err(com, 0, "Bad value - %s", buf);
 784         else
 785                 *val = v;
 786 }
 787
 788 static void modify_u32(char *com, const char *prompt,
 789                        const char *format, __u32 *val)
 790 {
 791         char buf[200];
 792         unsigned long v;
 793         char *tmp;
 794
 795         sprintf(buf, format, *val);
 796         printf("%30s    [%s] ", prompt, buf);
 797         fgets(buf, sizeof(buf), stdin);
 798         if (buf[strlen (buf) - 1] == '\n')
 799                 buf[strlen (buf) - 1] = '\0';
 800         if (!buf[0])
 801                 return;
 802         v = strtoul(buf, &tmp, 0);
 803         if (*tmp)
 804                 com_err(com, 0, "Bad value - %s", buf);
 805         else
 806                 *val = v;
 807 }
 808
 809
 810 void do_modify_inode(int argc, char *argv[])
 811 {
 812         struct ext2_inode inode;
 813         ext2_ino_t      inode_num;
 814         int             i;
 815         unsigned char   *frag, *fsize;
 816         char            buf[80];
 817         int             os;
 818         const char      *hex_format = "0x%x";
 819         const char      *octal_format = "0%o";
 820         const char      *decimal_format = "%d";
 821
 822         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 823                 return;
 824
 825         os = current_fs->super->s_creator_os;
 826
 827         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 828                 return;
 829
 830         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 831         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 832         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 833         modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
 834         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 835         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 836         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 837         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 838         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 839         modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
 840         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 841         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 842 #if 0
 843         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 844 #endif
 845         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 846         if (LINUX_S_ISDIR(inode.i_mode))
 847                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 848         else
 849                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 850
 851         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 852                 modify_u32(argv[0], "Translator Block",
 853                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 854
 855         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 856         switch (os) {
 857             case EXT2_OS_LINUX:
 858                 frag = &inode.osd2.linux2.l_i_frag;
 859                 fsize = &inode.osd2.linux2.l_i_fsize;
 860                 break;
 861             case EXT2_OS_HURD:
 862                 frag = &inode.osd2.hurd2.h_i_frag;
 863                 fsize = &inode.osd2.hurd2.h_i_fsize;
 864                 break;
 865             case EXT2_OS_MASIX:
 866                 frag = &inode.osd2.masix2.m_i_frag;
 867                 fsize = &inode.osd2.masix2.m_i_fsize;
 868                 break;
 869             default:
 870                 frag = fsize = 0;
 871         }
 872         if (frag)
 873                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 874         if (fsize)
 875                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 876
 877         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 878                 sprintf(buf, "Direct Block #%d", i);
 879                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 880         }
 881         modify_u32(argv[0], "Indirect Block", decimal_format,
 882                     &inode.i_block[EXT2_IND_BLOCK]);
 883         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 884                     &inode.i_block[EXT2_DIND_BLOCK]);
 885         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 886                     &inode.i_block[EXT2_TIND_BLOCK]);
 887         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 888                 return;
 889 }
 890
 891 void do_change_working_dir(int argc, char *argv[])
 892 {
 893         ext2_ino_t      inode;
 894         int             retval;
 895
 896         if (common_inode_args_process(argc, argv, &inode, 0))
 897                 return;
 898
 899         retval = ext2fs_check_directory(current_fs, inode);
 900         if (retval) {
 901                 com_err(argv[1], retval, "");
 902                 return;
 903         }
 904         cwd = inode;
 905         return;
 906 }
 907
 908 void do_print_working_directory(int argc, char *argv[])
 909 {
 910         int     retval;
 911         char    *pathname = NULL;
 912
 913         if (common_args_process(argc, argv, 1, 1,
 914                                 "print_working_directory", "", 0))
 915                 return;
 916
 917         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 918         if (retval) {
 919                 com_err(argv[0], retval,
 920                         "while trying to get pathname of cwd");
 921         }
 922         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 923         free(pathname);
 924         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 925         if (retval) {
 926                 com_err(argv[0], retval,
 927                         "while trying to get pathname of root");
 928         }
 929         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 930         free(pathname);
 931         return;
 932 }
 933
 934 /*
 935  * Given a mode, return the ext2 file type
 936  */
 937 static int ext2_file_type(unsigned int mode)
 938 {
 939         if (LINUX_S_ISREG(mode))
 940                 return EXT2_FT_REG_FILE;
 941
 942         if (LINUX_S_ISDIR(mode))
 943                 return EXT2_FT_DIR;
 944
 945         if (LINUX_S_ISCHR(mode))
 946                 return EXT2_FT_CHRDEV;
 947
 948         if (LINUX_S_ISBLK(mode))
 949                 return EXT2_FT_BLKDEV;
 950
 951         if (LINUX_S_ISLNK(mode))
 952                 return EXT2_FT_SYMLINK;
 953
 954         if (LINUX_S_ISFIFO(mode))
 955                 return EXT2_FT_FIFO;
 956
 957         if (LINUX_S_ISSOCK(mode))
 958                 return EXT2_FT_SOCK;
 959
 960         return 0;
 961 }
 962
 963 static void make_link(char *sourcename, char *destname)
 964 {
 965         ext2_ino_t      ino;
 966         struct ext2_inode inode;
 967         int             retval;
 968         ext2_ino_t      dir;
 969         char            *dest, *cp, *basename;
 970
 971         /*
 972          * Get the source inode
 973          */
 974         ino = string_to_inode(sourcename);
 975         if (!ino)
 976                 return;
 977         basename = strrchr(sourcename, '/');
 978         if (basename)
 979                 basename++;
 980         else
 981                 basename = sourcename;
 982         /*
 983          * Figure out the destination.  First see if it exists and is
 984          * a directory.
 985          */
 986         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
 987                 dest = basename;
 988         else {
 989                 /*
 990                  * OK, it doesn't exist.  See if it is
 991                  * '<dir>/basename' or 'basename'
 992                  */
 993                 cp = strrchr(destname, '/');
 994                 if (cp) {
 995                         *cp = 0;
 996                         dir = string_to_inode(destname);
 997                         if (!dir)
 998                                 return;
 999                         dest = cp+1;
1000                 } else {
1001                         dir = cwd;
1002                         dest = destname;
1003                 }
1004         }
1005
1006         if (debugfs_read_inode(ino, &inode, sourcename))
1007                 return;
1008
1009         retval = ext2fs_link(current_fs, dir, dest, ino,
1010                              ext2_file_type(inode.i_mode));
1011         if (retval)
1012                 com_err("make_link", retval, "");
1013         return;
1014 }
1015
1016
1017 void do_link(int argc, char *argv[])
1018 {
1019         if (common_args_process(argc, argv, 3, 3, "link",
1020                                 "<source file> <dest_name>", CHECK_FS_RW))
1021                 return;
1022
1023         make_link(argv[1], argv[2]);
1024 }
1025
1026 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1027                             int blockcnt EXT2FS_ATTR((unused)),
1028                             void *private EXT2FS_ATTR((unused)))
1029 {
1030         blk_t   block;
1031
1032         block = *blocknr;
1033         ext2fs_block_alloc_stats(fs, block, +1);
1034         return 0;
1035 }
1036
1037 void do_undel(int argc, char *argv[])
1038 {
1039         ext2_ino_t      ino;
1040         struct ext2_inode inode;
1041
1042         if (common_args_process(argc, argv, 3, 3, "undelete",
1043                                 "<inode_num> <dest_name>",
1044                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1045                 return;
1046
1047         ino = string_to_inode(argv[1]);
1048         if (!ino)
1049                 return;
1050
1051         if (debugfs_read_inode(ino, &inode, argv[1]))
1052                 return;
1053
1054         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1055                 com_err(argv[1], 0, "Inode is not marked as deleted");
1056                 return;
1057         }
1058
1059         /*
1060          * XXX this function doesn't handle changing the links count on the
1061          * parent directory when undeleting a directory.
1062          */
1063         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1064         inode.i_dtime = 0;
1065
1066         if (debugfs_write_inode(ino, &inode, argv[0]))
1067                 return;
1068
1069         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1070                              mark_blocks_proc, NULL);
1071
1072         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1073
1074         make_link(argv[1], argv[2]);
1075 }
1076
1077 static void unlink_file_by_name(char *filename)
1078 {
1079         int             retval;
1080         ext2_ino_t      dir;
1081         char            *basename;
1082
1083         basename = strrchr(filename, '/');
1084         if (basename) {
1085                 *basename++ = '\0';
1086                 dir = string_to_inode(filename);
1087                 if (!dir)
1088                         return;
1089         } else {
1090                 dir = cwd;
1091                 basename = filename;
1092         }
1093         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1094         if (retval)
1095                 com_err("unlink_file_by_name", retval, "");
1096         return;
1097 }
1098
1099 void do_unlink(int argc, char *argv[])
1100 {
1101         if (common_args_process(argc, argv, 2, 2, "link",
1102                                 "<pathname>", CHECK_FS_RW))
1103                 return;
1104
1105         unlink_file_by_name(argv[1]);
1106 }
1107
1108 void do_find_free_block(int argc, char *argv[])
1109 {
1110         blk_t   free_blk, goal;
1111         int             count;
1112         errcode_t       retval;
1113         char            *tmp;
1114
1115         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1116                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1117                 return;
1118         }
1119         if (check_fs_open(argv[0]))
1120                 return;
1121
1122         if (argc > 1) {
1123                 count = strtol(argv[1],&tmp,0);
1124                 if (*tmp) {
1125                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1126                         return;
1127                 }
1128         } else
1129                 count = 1;
1130
1131         if (argc > 2) {
1132                 goal = strtol(argv[2], &tmp, 0);
1133                 if (*tmp) {
1134                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1135                         return;
1136                 }
1137         }
1138         else
1139                 goal = current_fs->super->s_first_data_block;
1140
1141         printf("Free blocks found: ");
1142         free_blk = goal - 1;
1143         while (count-- > 0) {
1144                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1145                                           &free_blk);
1146                 if (retval) {
1147                         com_err("ext2fs_new_block", retval, "");
1148                         return;
1149                 } else
1150                         printf("%d ", free_blk);
1151         }
1152         printf("\n");
1153 }
1154
1155 void do_find_free_inode(int argc, char *argv[])
1156 {
1157         ext2_ino_t      free_inode, dir;
1158         int             mode;
1159         int             retval;
1160         char            *tmp;
1161
1162         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1163                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1164                 return;
1165         }
1166         if (check_fs_open(argv[0]))
1167                 return;
1168
1169         if (argc > 1) {
1170                 dir = strtol(argv[1], &tmp, 0);
1171                 if (*tmp) {
1172                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1173                         return;
1174                 }
1175         }
1176         else
1177                 dir = root;
1178         if (argc > 2) {
1179                 mode = strtol(argv[2], &tmp, 0);
1180                 if (*tmp) {
1181                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1182                         return;
1183                 }
1184         } else
1185                 mode = 010755;
1186
1187         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1188         if (retval)
1189                 com_err("ext2fs_new_inode", retval, "");
1190         else
1191                 printf("Free inode found: %u\n", free_inode);
1192 }
1193
1194 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1195 {
1196         ext2_file_t     e2_file;
1197         errcode_t       retval;
1198         int             got;
1199         unsigned int    written;
1200         char            buf[8192];
1201         char            *ptr;
1202
1203         retval = ext2fs_file_open(current_fs, newfile,
1204                                   EXT2_FILE_WRITE, &e2_file);
1205         if (retval)
1206                 return retval;
1207
1208         while (1) {
1209                 got = read(fd, buf, sizeof(buf));
1210                 if (got == 0)
1211                         break;
1212                 if (got < 0) {
1213                         retval = errno;
1214                         goto fail;
1215                 }
1216                 ptr = buf;
1217                 while (got > 0) {
1218                         retval = ext2fs_file_write(e2_file, ptr,
1219                                                    got, &written);
1220                         if (retval)
1221                                 goto fail;
1222
1223                         got -= written;
1224                         ptr += written;
1225                 }
1226         }
1227         retval = ext2fs_file_close(e2_file);
1228         return retval;
1229
1230 fail:
1231         (void) ext2fs_file_close(e2_file);
1232         return retval;
1233 }
1234
1235
1236 void do_write(int argc, char *argv[])
1237 {
1238         int             fd;
1239         struct stat     statbuf;
1240         ext2_ino_t      newfile;
1241         errcode_t       retval;
1242         struct ext2_inode inode;
1243
1244         if (common_args_process(argc, argv, 3, 3, "write",
1245                                 "<native file> <new file>", CHECK_FS_RW))
1246                 return;
1247
1248         fd = open(argv[1], O_RDONLY);
1249         if (fd < 0) {
1250                 com_err(argv[1], errno, "");
1251                 return;
1252         }
1253         if (fstat(fd, &statbuf) < 0) {
1254                 com_err(argv[1], errno, "");
1255                 close(fd);
1256                 return;
1257         }
1258
1259         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1260         if (retval == 0) {
1261                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1262                 close(fd);
1263                 return;
1264         }
1265
1266         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1267         if (retval) {
1268                 com_err(argv[0], retval, "");
1269                 close(fd);
1270                 return;
1271         }
1272         printf("Allocated inode: %u\n", newfile);
1273         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1274                              EXT2_FT_REG_FILE);
1275         if (retval == EXT2_ET_DIR_NO_SPACE) {
1276                 retval = ext2fs_expand_dir(current_fs, cwd);
1277                 if (retval) {
1278                         com_err(argv[0], retval, "while expanding directory");
1279                         return;
1280                 }
1281                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1282                                      EXT2_FT_REG_FILE);
1283         }
1284         if (retval) {
1285                 com_err(argv[2], retval, "");
1286                 close(fd);
1287                 return;
1288         }
1289         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1290                 com_err(argv[0], 0, "Warning: inode already set");
1291         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1292         memset(&inode, 0, sizeof(inode));
1293         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1294         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1295         inode.i_links_count = 1;
1296         inode.i_size = statbuf.st_size;
1297         if (debugfs_write_inode(newfile, &inode, argv[0])) {
1298                 close(fd);
1299                 return;
1300         }
1301         if (LINUX_S_ISREG(inode.i_mode)) {
1302                 retval = copy_file(fd, newfile);
1303                 if (retval)
1304                         com_err("copy_file", retval, "");
1305         }
1306         close(fd);
1307 }
1308
1309 void do_mknod(int argc, char *argv[])
1310 {
1311         unsigned long   mode, major, minor;
1312         ext2_ino_t      newfile;
1313         errcode_t       retval;
1314         struct ext2_inode inode;
1315         int             filetype, nr;
1316
1317         if (check_fs_open(argv[0]))
1318                 return;
1319         if (argc < 3 || argv[2][1]) {
1320         usage:
1321                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1322                 return;
1323         }
1324         mode = minor = major = 0;
1325         switch (argv[2][0]) {
1326                 case 'p':
1327                         mode = LINUX_S_IFIFO;
1328                         filetype = EXT2_FT_FIFO;
1329                         nr = 3;
1330                         break;
1331                 case 'c':
1332                         mode = LINUX_S_IFCHR;
1333                         filetype = EXT2_FT_CHRDEV;
1334                         nr = 5;
1335                         break;
1336                 case 'b':
1337                         mode = LINUX_S_IFBLK;
1338                         filetype = EXT2_FT_BLKDEV;
1339                         nr = 5;
1340                         break;
1341                 default:
1342                         filetype = 0;
1343                         nr = 0;
1344         }
1345         if (nr == 5) {
1346                 major = strtoul(argv[3], argv+3, 0);
1347                 minor = strtoul(argv[4], argv+4, 0);
1348                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1349                         nr = 0;
1350         }
1351         if (argc != nr)
1352                 goto usage;
1353         if (check_fs_read_write(argv[0]))
1354                 return;
1355         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1356         if (retval) {
1357                 com_err(argv[0], retval, "");
1358                 return;
1359         }
1360         printf("Allocated inode: %u\n", newfile);
1361         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1362         if (retval == EXT2_ET_DIR_NO_SPACE) {
1363                 retval = ext2fs_expand_dir(current_fs, cwd);
1364                 if (retval) {
1365                         com_err(argv[0], retval, "while expanding directory");
1366                         return;
1367                 }
1368                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1369                                      filetype);
1370         }
1371         if (retval) {
1372                 com_err(argv[1], retval, "");
1373                 return;
1374         }
1375         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1376                 com_err(argv[0], 0, "Warning: inode already set");
1377         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1378         ext2fs_mark_ib_dirty(current_fs);
1379         memset(&inode, 0, sizeof(inode));
1380         inode.i_mode = mode;
1381         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1382         if ((major < 256) && (minor < 256)) {
1383                 inode.i_block[0] = major*256+minor;
1384                 inode.i_block[1] = 0;
1385         } else {
1386                 inode.i_block[0] = 0;
1387                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1388         }
1389         inode.i_links_count = 1;
1390         if (debugfs_write_inode(newfile, &inode, argv[0]))
1391                 return;
1392 }
1393
1394 void do_mkdir(int argc, char *argv[])
1395 {
1396         char    *cp;
1397         ext2_ino_t      parent;
1398         char    *name;
1399         errcode_t retval;
1400
1401         if (common_args_process(argc, argv, 2, 2, "mkdir",
1402                                 "<filename>", CHECK_FS_RW))
1403                 return;
1404
1405         cp = strrchr(argv[1], '/');
1406         if (cp) {
1407                 *cp = 0;
1408                 parent = string_to_inode(argv[1]);
1409                 if (!parent) {
1410                         com_err(argv[1], ENOENT, "");
1411                         return;
1412                 }
1413                 name = cp+1;
1414         } else {
1415                 parent = cwd;
1416                 name = argv[1];
1417         }
1418
1419 try_again:
1420         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1421         if (retval == EXT2_ET_DIR_NO_SPACE) {
1422                 retval = ext2fs_expand_dir(current_fs, parent);
1423                 if (retval) {
1424                         com_err("argv[0]", retval, "while expanding directory");
1425                         return;
1426                 }
1427                 goto try_again;
1428         }
1429         if (retval) {
1430                 com_err("ext2fs_mkdir", retval, "");
1431                 return;
1432         }
1433
1434 }
1435
1436 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1437                                int blockcnt EXT2FS_ATTR((unused)),
1438                                void *private EXT2FS_ATTR((unused)))
1439 {
1440         blk_t   block;
1441
1442         block = *blocknr;
1443         ext2fs_block_alloc_stats(fs, block, -1);
1444         return 0;
1445 }
1446
1447 static void kill_file_by_inode(ext2_ino_t inode)
1448 {
1449         struct ext2_inode inode_buf;
1450
1451         if (debugfs_read_inode(inode, &inode_buf, 0))
1452                 return;
1453         inode_buf.i_dtime = time(NULL);
1454         if (debugfs_write_inode(inode, &inode_buf, 0))
1455                 return;
1456         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1457                 return;
1458
1459         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1460                              release_blocks_proc, NULL);
1461         printf("\n");
1462         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1463                                   LINUX_S_ISDIR(inode_buf.i_mode));
1464 }
1465
1466
1467 void do_kill_file(int argc, char *argv[])
1468 {
1469         ext2_ino_t inode_num;
1470
1471         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1472                 return;
1473
1474         kill_file_by_inode(inode_num);
1475 }
1476
1477 void do_rm(int argc, char *argv[])
1478 {
1479         int retval;
1480         ext2_ino_t inode_num;
1481         struct ext2_inode inode;
1482
1483         if (common_args_process(argc, argv, 2, 2, "rm",
1484                                 "<filename>", CHECK_FS_RW))
1485                 return;
1486
1487         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1488         if (retval) {
1489                 com_err(argv[0], retval, "while trying to resolve filename");
1490                 return;
1491         }
1492
1493         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1494                 return;
1495
1496         if (LINUX_S_ISDIR(inode.i_mode)) {
1497                 com_err(argv[0], 0, "file is a directory");
1498                 return;
1499         }
1500
1501         --inode.i_links_count;
1502         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1503                 return;
1504
1505         unlink_file_by_name(argv[1]);
1506         if (inode.i_links_count == 0)
1507                 kill_file_by_inode(inode_num);
1508 }
1509
1510 struct rd_struct {
1511         ext2_ino_t      parent;
1512         int             empty;
1513 };
1514
1515 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1516                       int       entry EXT2FS_ATTR((unused)),
1517                       struct ext2_dir_entry *dirent,
1518                       int       offset EXT2FS_ATTR((unused)),
1519                       int       blocksize EXT2FS_ATTR((unused)),
1520                       char      *buf EXT2FS_ATTR((unused)),
1521                       void      *private)
1522 {
1523         struct rd_struct *rds = (struct rd_struct *) private;
1524
1525         if (dirent->inode == 0)
1526                 return 0;
1527         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1528                 return 0;
1529         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1530             (dirent->name[1] == '.')) {
1531                 rds->parent = dirent->inode;
1532                 return 0;
1533         }
1534         rds->empty = 0;
1535         return 0;
1536 }
1537
1538 void do_rmdir(int argc, char *argv[])
1539 {
1540         int retval;
1541         ext2_ino_t inode_num;
1542         struct ext2_inode inode;
1543         struct rd_struct rds;
1544
1545         if (common_args_process(argc, argv, 2, 2, "rmdir",
1546                                 "<filename>", CHECK_FS_RW))
1547                 return;
1548
1549         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1550         if (retval) {
1551                 com_err(argv[0], retval, "while trying to resolve filename");
1552                 return;
1553         }
1554
1555         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1556                 return;
1557
1558         if (!LINUX_S_ISDIR(inode.i_mode)) {
1559                 com_err(argv[0], 0, "file is not a directory");
1560                 return;
1561         }
1562
1563         rds.parent = 0;
1564         rds.empty = 1;
1565
1566         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1567                                     0, rmdir_proc, &rds);
1568         if (retval) {
1569                 com_err(argv[0], retval, "while iterating over directory");
1570                 return;
1571         }
1572         if (rds.empty == 0) {
1573                 com_err(argv[0], 0, "directory not empty");
1574                 return;
1575         }
1576
1577         inode.i_links_count = 0;
1578         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1579                 return;
1580
1581         unlink_file_by_name(argv[1]);
1582         kill_file_by_inode(inode_num);
1583
1584         if (rds.parent) {
1585                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1586                         return;
1587                 if (inode.i_links_count > 1)
1588                         inode.i_links_count--;
1589                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1590                         return;
1591         }
1592 }
1593
1594 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1595                             char *argv[] EXT2FS_ATTR((unused)))
1596 {
1597         FILE *out = stdout;
1598
1599         if (current_fs)
1600                 fprintf(out, "Open mode: read-%s\n",
1601                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1602         fprintf(out, "Filesystem in use: %s\n",
1603                 current_fs ? current_fs->device_name : "--none--");
1604 }
1605
1606 void do_expand_dir(int argc, char *argv[])
1607 {
1608         ext2_ino_t inode;
1609         int retval;
1610
1611         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1612                 return;
1613
1614         retval = ext2fs_expand_dir(current_fs, inode);
1615         if (retval)
1616                 com_err("ext2fs_expand_dir", retval, "");
1617         return;
1618 }
1619
1620 void do_features(int argc, char *argv[])
1621 {
1622         int     i;
1623
1624         if (check_fs_open(argv[0]))
1625                 return;
1626
1627         if ((argc != 1) && check_fs_read_write(argv[0]))
1628                 return;
1629         for (i=1; i < argc; i++) {
1630                 if (e2p_edit_feature(argv[i],
1631                                      &current_fs->super->s_feature_compat, 0))
1632                         com_err(argv[0], 0, "Unknown feature: %s\n",
1633                                 argv[i]);
1634                 else
1635                         ext2fs_mark_super_dirty(current_fs);
1636         }
1637         print_features(current_fs->super, stdout);
1638 }
1639
1640 void do_bmap(int argc, char *argv[])
1641 {
1642         ext2_ino_t      ino;
1643         blk_t           blk, pblk;
1644         int             err;
1645         errcode_t       errcode;
1646
1647         if (common_args_process(argc, argv, 3, 3, argv[0],
1648                                 "<file> logical_blk", 0))
1649                 return;
1650
1651         ino = string_to_inode(argv[1]);
1652         if (!ino)
1653                 return;
1654         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1655
1656         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1657         if (errcode) {
1658                 com_err("argv[0]", errcode,
1659                         "while mapping logical block %d\n", blk);
1660                 return;
1661         }
1662         printf("%d\n", pblk);
1663 }
1664
1665 void do_imap(int argc, char *argv[])
1666 {
1667         ext2_ino_t      ino;
1668         unsigned long   group, block, block_nr, offset;
1669
1670         if (common_args_process(argc, argv, 2, 2, argv[0],
1671                                 "<file>", 0))
1672                 return;
1673         ino = string_to_inode(argv[1]);
1674         if (!ino)
1675                 return;
1676
1677         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1678         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1679                 EXT2_INODE_SIZE(current_fs->super);
1680         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1681         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1682                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1683                         group);
1684                 return;
1685         }
1686         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1687                 block;
1688         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1689
1690         printf("Inode %d is part of block group %lu\n"
1691                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1692                block_nr, offset);
1693
1694 }
1695
1696
1697
1698 static int source_file(const char *cmd_file, int sci_idx)
1699 {
1700         FILE            *f;
1701         char            buf[256];
1702         char            *cp;
1703         int             exit_status = 0;
1704         int             retval;
1705
1706         if (strcmp(cmd_file, "-") == 0)
1707                 f = stdin;
1708         else {
1709                 f = fopen(cmd_file, "r");
1710                 if (!f) {
1711                         perror(cmd_file);
1712                         exit(1);
1713                 }
1714         }
1715         setbuf(stdout, NULL);
1716         setbuf(stderr, NULL);
1717         while (!feof(f)) {
1718                 if (fgets(buf, sizeof(buf), f) == NULL)
1719                         break;
1720                 cp = strchr(buf, '\n');
1721                 if (cp)
1722                         *cp = 0;
1723                 cp = strchr(buf, '\r');
1724                 if (cp)
1725                         *cp = 0;
1726                 printf("debugfs: %s\n", buf);
1727                 retval = ss_execute_line(sci_idx, buf);
1728                 if (retval) {
1729                         ss_perror(sci_idx, retval, buf);
1730                         exit_status++;
1731                 }
1732         }
1733         return exit_status;
1734 }
1735
1736 int main(int argc, char **argv)
1737 {
1738         int             retval;
1739         int             sci_idx;
1740         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1741         int             c;
1742         int             open_flags = 0;
1743         char            *request = 0;
1744         int             exit_status = 0;
1745         char            *cmd_file = 0;
1746         blk_t           superblock = 0;
1747         blk_t           blocksize = 0;
1748         int             catastrophic = 0;
1749         char            *data_filename = 0;
1750
1751         initialize_ext2_error_table();
1752         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1753                  E2FSPROGS_DATE);
1754
1755         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1756                 switch (c) {
1757                 case 'R':
1758                         request = optarg;
1759                         break;
1760                 case 'f':
1761                         cmd_file = optarg;
1762                         break;
1763                 case 'd':
1764                         data_filename = optarg;
1765                         break;
1766                 case 'i':
1767                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1768                         break;
1769                 case 'w':
1770                         open_flags |= EXT2_FLAG_RW;
1771                         break;
1772                 case 'b':
1773                         blocksize = parse_ulong(optarg, argv[0],
1774                                                 "block size", 0);
1775                         break;
1776                 case 's':
1777                         superblock = parse_ulong(optarg, argv[0],
1778                                                  "superblock number", 0);
1779                         break;
1780                 case 'c':
1781                         catastrophic = 1;
1782                         break;
1783                 case 'V':
1784                         /* Print version number and exit */
1785                         fprintf(stderr, "\tUsing %s\n",
1786                                 error_message(EXT2_ET_BASE));
1787                         exit(0);
1788                 default:
1789                         com_err(argv[0], 0, usage);
1790                         return 1;
1791                 }
1792         }
1793         if (optind < argc)
1794                 open_filesystem(argv[optind], open_flags,
1795                                 superblock, blocksize, catastrophic,
1796                                 data_filename);
1797
1798         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1799                                        &debug_cmds, &retval);
1800         if (retval) {
1801                 ss_perror(sci_idx, retval, "creating invocation");
1802                 exit(1);
1803         }
1804         ss_get_readline(sci_idx);
1805
1806         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1807         if (retval) {
1808                 ss_perror(sci_idx, retval, "adding standard requests");
1809                 exit (1);
1810         }
1811         if (request) {
1812                 retval = 0;
1813                 retval = ss_execute_line(sci_idx, request);
1814                 if (retval) {
1815                         ss_perror(sci_idx, retval, request);
1816                         exit_status++;
1817                 }
1818         } else if (cmd_file) {
1819                 exit_status = source_file(cmd_file, sci_idx);
1820         } else {
1821                 ss_listen(sci_idx);
1822         }
1823
1824         if (current_fs)
1825                 close_filesystem();
1826
1827         return exit_status;
1828 }