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         fprintf(out, "Size of extra inode fields: %d\n", inode->i_extra_isize);
 435         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 436                         EXT2_GOOD_OLD_INODE_SIZE) {
 437                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 438                                 inode->i_extra_isize);
 439                 return;
 440         }
 441         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 442                         EXT2_GOOD_OLD_INODE_SIZE -
 443                         inode->i_extra_isize;
 444         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 445                         inode->i_extra_isize);
 446         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 447                 fprintf(out, "Extended attributes stored in inode body: \n");
 448                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 449                 start = (char *) magic + sizeof(__u32);
 450                 entry = (struct ext2_ext_attr_entry *) start;
 451                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 452                         struct ext2_ext_attr_entry *next =
 453                                 EXT2_EXT_ATTR_NEXT(entry);
 454                         if (entry->e_value_size > storage_size ||
 455                                         (char *) next >= end) {
 456                                 fprintf(out, "invalid EA entry in inode\n");
 457                                 return;
 458                         }
 459                         fprintf(out, "  ");
 460                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 461                                           entry->e_name_len);
 462                         fprintf(out, " = \"");
 463                         dump_xattr_string(out, start + entry->e_value_offs,
 464                                                 entry->e_value_size);
 465                         fprintf(out, "\" (%d)\n", entry->e_value_size);
 466                         entry = next;
 467                 }
 468         }
 469 }
 470
 471 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 472 {
 473         struct list_blocks_struct lb;
 474
 475         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 476         lb.total = 0;
 477         lb.first_block = 0;
 478         lb.f = f;
 479         lb.first = 1;
 480         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 481                              list_blocks_proc, (void *)&lb);
 482         finish_range(&lb);
 483         if (lb.total)
 484                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 485         fprintf(f,"\n");
 486 }
 487
 488
 489 void internal_dump_inode(FILE *out, const char *prefix,
 490                          ext2_ino_t inode_num, struct ext2_inode *inode,
 491                          int do_dump_blocks)
 492 {
 493         const char *i_type;
 494         char frag, fsize;
 495         int os = current_fs->super->s_creator_os;
 496
 497         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 498         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 499         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 500         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 501         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 502         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 503         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 504         else i_type = "bad type";
 505         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 506         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 507                 prefix,
 508                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 509         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 510                 prefix, inode->i_uid, inode->i_gid);
 511         if (LINUX_S_ISREG(inode->i_mode)) {
 512                 __u64 i_size = (inode->i_size |
 513                                 ((unsigned long long)inode->i_size_high << 32));
 514
 515                 fprintf(out, "%lld\n", i_size);
 516         } else
 517                 fprintf(out, "%d\n", inode->i_size);
 518         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 519                 fprintf(out,
 520                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 521                         prefix,
 522                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 523                         inode->osd1.hurd1.h_i_translator);
 524         else
 525                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 526                         prefix,
 527                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 528         fprintf(out, "%sLinks: %d   Blockcount: %d\n",
 529                 prefix, inode->i_links_count, inode->i_blocks);
 530         switch (os) {
 531             case EXT2_OS_LINUX:
 532                 frag = inode->osd2.linux2.l_i_frag;
 533                 fsize = inode->osd2.linux2.l_i_fsize;
 534                 break;
 535             case EXT2_OS_HURD:
 536                 frag = inode->osd2.hurd2.h_i_frag;
 537                 fsize = inode->osd2.hurd2.h_i_fsize;
 538                 break;
 539             case EXT2_OS_MASIX:
 540                 frag = inode->osd2.masix2.m_i_frag;
 541                 fsize = inode->osd2.masix2.m_i_fsize;
 542                 break;
 543             default:
 544                 frag = fsize = 0;
 545         }
 546         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 547                 prefix, inode->i_faddr, frag, fsize);
 548         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 549                 time_to_string(inode->i_ctime));
 550         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 551                 time_to_string(inode->i_atime));
 552         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 553                 time_to_string(inode->i_mtime));
 554         if (inode->i_dtime)
 555           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 556                   time_to_string(inode->i_dtime));
 557         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 558                 internal_dump_inode_extra(out, prefix, inode_num,
 559                                           (struct ext2_inode_large *) inode);
 560         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 561                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 562                         (int) inode->i_size, (char *)inode->i_block);
 563         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 564                 int major, minor;
 565                 const char *devnote;
 566
 567                 if (inode->i_block[0]) {
 568                         major = (inode->i_block[0] >> 8) & 255;
 569                         minor = inode->i_block[0] & 255;
 570                         devnote = "";
 571                 } else {
 572                         major = (inode->i_block[1] & 0xfff00) >> 8;
 573                         minor = ((inode->i_block[1] & 0xff) |
 574                                  ((inode->i_block[1] >> 12) & 0xfff00));
 575                         devnote = "(New-style) ";
 576                 }
 577                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 578                         devnote, major, minor, major, minor);
 579         }
 580         else if (do_dump_blocks)
 581                 dump_blocks(out, prefix, inode_num);
 582 }
 583
 584 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 585 {
 586         FILE    *out;
 587
 588         out = open_pager();
 589         internal_dump_inode(out, "", inode_num, inode, 1);
 590         close_pager(out);
 591 }
 592
 593 void do_stat(int argc, char *argv[])
 594 {
 595         ext2_ino_t      inode;
 596         struct ext2_inode * inode_buf;
 597
 598         if (check_fs_open(argv[0]))
 599                 return 1;
 600
 601         inode_buf = (struct ext2_inode *)
 602                         malloc(EXT2_INODE_SIZE(current_fs->super));
 603         if (!inode_buf) {
 604                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 605                 return;
 606         }
 607
 608         if (common_inode_args_process(argc, argv, &inode, 0)) {
 609                 free(inode_buf);
 610                 return;
 611         }
 612
 613         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 614                                         EXT2_INODE_SIZE(current_fs->super))) {
 615                 free(inode_buf);
 616                 return;
 617         }
 618
 619         dump_inode(inode, inode_buf);
 620         free(inode_buf);
 621         return;
 622 }
 623
 624 void do_chroot(int argc, char *argv[])
 625 {
 626         ext2_ino_t inode;
 627         int retval;
 628
 629         if (common_inode_args_process(argc, argv, &inode, 0))
 630                 return;
 631
 632         retval = ext2fs_check_directory(current_fs, inode);
 633         if (retval)  {
 634                 com_err(argv[1], retval, "");
 635                 return;
 636         }
 637         root = inode;
 638 }
 639
 640 void do_clri(int argc, char *argv[])
 641 {
 642         ext2_ino_t inode;
 643         struct ext2_inode inode_buf;
 644
 645         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 646                 return;
 647
 648         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 649                 return;
 650         memset(&inode_buf, 0, sizeof(inode_buf));
 651         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 652                 return;
 653 }
 654
 655 void do_freei(int argc, char *argv[])
 656 {
 657         ext2_ino_t inode;
 658
 659         if (common_inode_args_process(argc, argv, &inode,
 660                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 661                 return;
 662
 663         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 664                 com_err(argv[0], 0, "Warning: inode already clear");
 665         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 666         ext2fs_mark_ib_dirty(current_fs);
 667 }
 668
 669 void do_seti(int argc, char *argv[])
 670 {
 671         ext2_ino_t inode;
 672
 673         if (common_inode_args_process(argc, argv, &inode,
 674                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 675                 return;
 676
 677         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 678                 com_err(argv[0], 0, "Warning: inode already set");
 679         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 680         ext2fs_mark_ib_dirty(current_fs);
 681 }
 682
 683 void do_testi(int argc, char *argv[])
 684 {
 685         ext2_ino_t inode;
 686
 687         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 688                 return;
 689
 690         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 691                 printf("Inode %u is marked in use\n", inode);
 692         else
 693                 printf("Inode %u is not in use\n", inode);
 694 }
 695
 696 void do_freeb(int argc, char *argv[])
 697 {
 698         blk_t block;
 699         int count = 1;
 700
 701         if (common_block_args_process(argc, argv, &block, &count))
 702                 return;
 703         if (check_fs_read_write(argv[0]))
 704                 return;
 705         while (count-- > 0) {
 706                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 707                         com_err(argv[0], 0, "Warning: block %d already clear",
 708                                 block);
 709                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 710                 block++;
 711         }
 712         ext2fs_mark_bb_dirty(current_fs);
 713 }
 714
 715 void do_setb(int argc, char *argv[])
 716 {
 717         blk_t block;
 718         int count = 1;
 719
 720         if (common_block_args_process(argc, argv, &block, &count))
 721                 return;
 722         if (check_fs_read_write(argv[0]))
 723                 return;
 724         while (count-- > 0) {
 725                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 726                         com_err(argv[0], 0, "Warning: block %d already set",
 727                                 block);
 728                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 729                 block++;
 730         }
 731         ext2fs_mark_bb_dirty(current_fs);
 732 }
 733
 734 void do_testb(int argc, char *argv[])
 735 {
 736         blk_t block;
 737         int count = 1;
 738
 739         if (common_block_args_process(argc, argv, &block, &count))
 740                 return;
 741         while (count-- > 0) {
 742                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 743                         printf("Block %d marked in use\n", block);
 744                 else
 745                         printf("Block %d not in use\n", block);
 746                 block++;
 747         }
 748 }
 749
 750 static void modify_u8(char *com, const char *prompt,
 751                       const char *format, __u8 *val)
 752 {
 753         char buf[200];
 754         unsigned long v;
 755         char *tmp;
 756
 757         sprintf(buf, format, *val);
 758         printf("%30s    [%s] ", prompt, buf);
 759         fgets(buf, sizeof(buf), stdin);
 760         if (buf[strlen (buf) - 1] == '\n')
 761                 buf[strlen (buf) - 1] = '\0';
 762         if (!buf[0])
 763                 return;
 764         v = strtoul(buf, &tmp, 0);
 765         if (*tmp)
 766                 com_err(com, 0, "Bad value - %s", buf);
 767         else
 768                 *val = v;
 769 }
 770
 771 static void modify_u16(char *com, const char *prompt,
 772                        const char *format, __u16 *val)
 773 {
 774         char buf[200];
 775         unsigned long v;
 776         char *tmp;
 777
 778         sprintf(buf, format, *val);
 779         printf("%30s    [%s] ", prompt, buf);
 780         fgets(buf, sizeof(buf), stdin);
 781         if (buf[strlen (buf) - 1] == '\n')
 782                 buf[strlen (buf) - 1] = '\0';
 783         if (!buf[0])
 784                 return;
 785         v = strtoul(buf, &tmp, 0);
 786         if (*tmp)
 787                 com_err(com, 0, "Bad value - %s", buf);
 788         else
 789                 *val = v;
 790 }
 791
 792 static void modify_u32(char *com, const char *prompt,
 793                        const char *format, __u32 *val)
 794 {
 795         char buf[200];
 796         unsigned long v;
 797         char *tmp;
 798
 799         sprintf(buf, format, *val);
 800         printf("%30s    [%s] ", prompt, buf);
 801         fgets(buf, sizeof(buf), stdin);
 802         if (buf[strlen (buf) - 1] == '\n')
 803                 buf[strlen (buf) - 1] = '\0';
 804         if (!buf[0])
 805                 return;
 806         v = strtoul(buf, &tmp, 0);
 807         if (*tmp)
 808                 com_err(com, 0, "Bad value - %s", buf);
 809         else
 810                 *val = v;
 811 }
 812
 813
 814 void do_modify_inode(int argc, char *argv[])
 815 {
 816         struct ext2_inode inode;
 817         ext2_ino_t      inode_num;
 818         int             i;
 819         unsigned char   *frag, *fsize;
 820         char            buf[80];
 821         int             os;
 822         const char      *hex_format = "0x%x";
 823         const char      *octal_format = "0%o";
 824         const char      *decimal_format = "%d";
 825
 826         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 827                 return;
 828
 829         os = current_fs->super->s_creator_os;
 830
 831         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 832                 return;
 833
 834         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 835         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 836         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 837         modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
 838         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 839         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 840         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 841         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 842         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 843         modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
 844         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 845         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 846 #if 0
 847         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 848 #endif
 849         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 850         if (LINUX_S_ISDIR(inode.i_mode))
 851                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 852         else
 853                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 854
 855         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 856                 modify_u32(argv[0], "Translator Block",
 857                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 858
 859         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 860         switch (os) {
 861             case EXT2_OS_LINUX:
 862                 frag = &inode.osd2.linux2.l_i_frag;
 863                 fsize = &inode.osd2.linux2.l_i_fsize;
 864                 break;
 865             case EXT2_OS_HURD:
 866                 frag = &inode.osd2.hurd2.h_i_frag;
 867                 fsize = &inode.osd2.hurd2.h_i_fsize;
 868                 break;
 869             case EXT2_OS_MASIX:
 870                 frag = &inode.osd2.masix2.m_i_frag;
 871                 fsize = &inode.osd2.masix2.m_i_fsize;
 872                 break;
 873             default:
 874                 frag = fsize = 0;
 875         }
 876         if (frag)
 877                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 878         if (fsize)
 879                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 880
 881         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 882                 sprintf(buf, "Direct Block #%d", i);
 883                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 884         }
 885         modify_u32(argv[0], "Indirect Block", decimal_format,
 886                     &inode.i_block[EXT2_IND_BLOCK]);
 887         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 888                     &inode.i_block[EXT2_DIND_BLOCK]);
 889         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 890                     &inode.i_block[EXT2_TIND_BLOCK]);
 891         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 892                 return;
 893 }
 894
 895 void do_change_working_dir(int argc, char *argv[])
 896 {
 897         ext2_ino_t      inode;
 898         int             retval;
 899
 900         if (common_inode_args_process(argc, argv, &inode, 0))
 901                 return;
 902
 903         retval = ext2fs_check_directory(current_fs, inode);
 904         if (retval) {
 905                 com_err(argv[1], retval, "");
 906                 return;
 907         }
 908         cwd = inode;
 909         return;
 910 }
 911
 912 void do_print_working_directory(int argc, char *argv[])
 913 {
 914         int     retval;
 915         char    *pathname = NULL;
 916
 917         if (common_args_process(argc, argv, 1, 1,
 918                                 "print_working_directory", "", 0))
 919                 return;
 920
 921         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 922         if (retval) {
 923                 com_err(argv[0], retval,
 924                         "while trying to get pathname of cwd");
 925         }
 926         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 927         free(pathname);
 928         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 929         if (retval) {
 930                 com_err(argv[0], retval,
 931                         "while trying to get pathname of root");
 932         }
 933         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 934         free(pathname);
 935         return;
 936 }
 937
 938 /*
 939  * Given a mode, return the ext2 file type
 940  */
 941 static int ext2_file_type(unsigned int mode)
 942 {
 943         if (LINUX_S_ISREG(mode))
 944                 return EXT2_FT_REG_FILE;
 945
 946         if (LINUX_S_ISDIR(mode))
 947                 return EXT2_FT_DIR;
 948
 949         if (LINUX_S_ISCHR(mode))
 950                 return EXT2_FT_CHRDEV;
 951
 952         if (LINUX_S_ISBLK(mode))
 953                 return EXT2_FT_BLKDEV;
 954
 955         if (LINUX_S_ISLNK(mode))
 956                 return EXT2_FT_SYMLINK;
 957
 958         if (LINUX_S_ISFIFO(mode))
 959                 return EXT2_FT_FIFO;
 960
 961         if (LINUX_S_ISSOCK(mode))
 962                 return EXT2_FT_SOCK;
 963
 964         return 0;
 965 }
 966
 967 static void make_link(char *sourcename, char *destname)
 968 {
 969         ext2_ino_t      ino;
 970         struct ext2_inode inode;
 971         int             retval;
 972         ext2_ino_t      dir;
 973         char            *dest, *cp, *basename;
 974
 975         /*
 976          * Get the source inode
 977          */
 978         ino = string_to_inode(sourcename);
 979         if (!ino)
 980                 return;
 981         basename = strrchr(sourcename, '/');
 982         if (basename)
 983                 basename++;
 984         else
 985                 basename = sourcename;
 986         /*
 987          * Figure out the destination.  First see if it exists and is
 988          * a directory.
 989          */
 990         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
 991                 dest = basename;
 992         else {
 993                 /*
 994                  * OK, it doesn't exist.  See if it is
 995                  * '<dir>/basename' or 'basename'
 996                  */
 997                 cp = strrchr(destname, '/');
 998                 if (cp) {
 999                         *cp = 0;
1000                         dir = string_to_inode(destname);
1001                         if (!dir)
1002                                 return;
1003                         dest = cp+1;
1004                 } else {
1005                         dir = cwd;
1006                         dest = destname;
1007                 }
1008         }
1009
1010         if (debugfs_read_inode(ino, &inode, sourcename))
1011                 return;
1012
1013         retval = ext2fs_link(current_fs, dir, dest, ino,
1014                              ext2_file_type(inode.i_mode));
1015         if (retval)
1016                 com_err("make_link", retval, "");
1017         return;
1018 }
1019
1020
1021 void do_link(int argc, char *argv[])
1022 {
1023         if (common_args_process(argc, argv, 3, 3, "link",
1024                                 "<source file> <dest_name>", CHECK_FS_RW))
1025                 return;
1026
1027         make_link(argv[1], argv[2]);
1028 }
1029
1030 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1031                             int blockcnt EXT2FS_ATTR((unused)),
1032                             void *private EXT2FS_ATTR((unused)))
1033 {
1034         blk_t   block;
1035
1036         block = *blocknr;
1037         ext2fs_block_alloc_stats(fs, block, +1);
1038         return 0;
1039 }
1040
1041 void do_undel(int argc, char *argv[])
1042 {
1043         ext2_ino_t      ino;
1044         struct ext2_inode inode;
1045
1046         if (common_args_process(argc, argv, 3, 3, "undelete",
1047                                 "<inode_num> <dest_name>",
1048                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1049                 return;
1050
1051         ino = string_to_inode(argv[1]);
1052         if (!ino)
1053                 return;
1054
1055         if (debugfs_read_inode(ino, &inode, argv[1]))
1056                 return;
1057
1058         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1059                 com_err(argv[1], 0, "Inode is not marked as deleted");
1060                 return;
1061         }
1062
1063         /*
1064          * XXX this function doesn't handle changing the links count on the
1065          * parent directory when undeleting a directory.
1066          */
1067         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1068         inode.i_dtime = 0;
1069
1070         if (debugfs_write_inode(ino, &inode, argv[0]))
1071                 return;
1072
1073         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1074                              mark_blocks_proc, NULL);
1075
1076         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1077
1078         make_link(argv[1], argv[2]);
1079 }
1080
1081 static void unlink_file_by_name(char *filename)
1082 {
1083         int             retval;
1084         ext2_ino_t      dir;
1085         char            *basename;
1086
1087         basename = strrchr(filename, '/');
1088         if (basename) {
1089                 *basename++ = '\0';
1090                 dir = string_to_inode(filename);
1091                 if (!dir)
1092                         return;
1093         } else {
1094                 dir = cwd;
1095                 basename = filename;
1096         }
1097         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1098         if (retval)
1099                 com_err("unlink_file_by_name", retval, "");
1100         return;
1101 }
1102
1103 void do_unlink(int argc, char *argv[])
1104 {
1105         if (common_args_process(argc, argv, 2, 2, "link",
1106                                 "<pathname>", CHECK_FS_RW))
1107                 return;
1108
1109         unlink_file_by_name(argv[1]);
1110 }
1111
1112 void do_find_free_block(int argc, char *argv[])
1113 {
1114         blk_t   free_blk, goal;
1115         int             count;
1116         errcode_t       retval;
1117         char            *tmp;
1118
1119         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1120                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1121                 return;
1122         }
1123         if (check_fs_open(argv[0]))
1124                 return;
1125
1126         if (argc > 1) {
1127                 count = strtol(argv[1],&tmp,0);
1128                 if (*tmp) {
1129                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1130                         return;
1131                 }
1132         } else
1133                 count = 1;
1134
1135         if (argc > 2) {
1136                 goal = strtol(argv[2], &tmp, 0);
1137                 if (*tmp) {
1138                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1139                         return;
1140                 }
1141         }
1142         else
1143                 goal = current_fs->super->s_first_data_block;
1144
1145         printf("Free blocks found: ");
1146         free_blk = goal - 1;
1147         while (count-- > 0) {
1148                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1149                                           &free_blk);
1150                 if (retval) {
1151                         com_err("ext2fs_new_block", retval, "");
1152                         return;
1153                 } else
1154                         printf("%d ", free_blk);
1155         }
1156         printf("\n");
1157 }
1158
1159 void do_find_free_inode(int argc, char *argv[])
1160 {
1161         ext2_ino_t      free_inode, dir;
1162         int             mode;
1163         int             retval;
1164         char            *tmp;
1165
1166         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1167                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1168                 return;
1169         }
1170         if (check_fs_open(argv[0]))
1171                 return;
1172
1173         if (argc > 1) {
1174                 dir = strtol(argv[1], &tmp, 0);
1175                 if (*tmp) {
1176                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1177                         return;
1178                 }
1179         }
1180         else
1181                 dir = root;
1182         if (argc > 2) {
1183                 mode = strtol(argv[2], &tmp, 0);
1184                 if (*tmp) {
1185                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1186                         return;
1187                 }
1188         } else
1189                 mode = 010755;
1190
1191         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1192         if (retval)
1193                 com_err("ext2fs_new_inode", retval, "");
1194         else
1195                 printf("Free inode found: %u\n", free_inode);
1196 }
1197
1198 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1199 {
1200         ext2_file_t     e2_file;
1201         errcode_t       retval;
1202         int             got;
1203         unsigned int    written;
1204         char            buf[8192];
1205         char            *ptr;
1206
1207         retval = ext2fs_file_open(current_fs, newfile,
1208                                   EXT2_FILE_WRITE, &e2_file);
1209         if (retval)
1210                 return retval;
1211
1212         while (1) {
1213                 got = read(fd, buf, sizeof(buf));
1214                 if (got == 0)
1215                         break;
1216                 if (got < 0) {
1217                         retval = errno;
1218                         goto fail;
1219                 }
1220                 ptr = buf;
1221                 while (got > 0) {
1222                         retval = ext2fs_file_write(e2_file, ptr,
1223                                                    got, &written);
1224                         if (retval)
1225                                 goto fail;
1226
1227                         got -= written;
1228                         ptr += written;
1229                 }
1230         }
1231         retval = ext2fs_file_close(e2_file);
1232         return retval;
1233
1234 fail:
1235         (void) ext2fs_file_close(e2_file);
1236         return retval;
1237 }
1238
1239
1240 void do_write(int argc, char *argv[])
1241 {
1242         int             fd;
1243         struct stat     statbuf;
1244         ext2_ino_t      newfile;
1245         errcode_t       retval;
1246         struct ext2_inode inode;
1247
1248         if (common_args_process(argc, argv, 3, 3, "write",
1249                                 "<native file> <new file>", CHECK_FS_RW))
1250                 return;
1251
1252         fd = open(argv[1], O_RDONLY);
1253         if (fd < 0) {
1254                 com_err(argv[1], errno, "");
1255                 return;
1256         }
1257         if (fstat(fd, &statbuf) < 0) {
1258                 com_err(argv[1], errno, "");
1259                 close(fd);
1260                 return;
1261         }
1262
1263         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1264         if (retval == 0) {
1265                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1266                 close(fd);
1267                 return;
1268         }
1269
1270         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1271         if (retval) {
1272                 com_err(argv[0], retval, "");
1273                 close(fd);
1274                 return;
1275         }
1276         printf("Allocated inode: %u\n", newfile);
1277         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1278                              EXT2_FT_REG_FILE);
1279         if (retval == EXT2_ET_DIR_NO_SPACE) {
1280                 retval = ext2fs_expand_dir(current_fs, cwd);
1281                 if (retval) {
1282                         com_err(argv[0], retval, "while expanding directory");
1283                         return;
1284                 }
1285                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1286                                      EXT2_FT_REG_FILE);
1287         }
1288         if (retval) {
1289                 com_err(argv[2], retval, "");
1290                 close(fd);
1291                 return;
1292         }
1293         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1294                 com_err(argv[0], 0, "Warning: inode already set");
1295         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1296         memset(&inode, 0, sizeof(inode));
1297         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1298         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1299         inode.i_links_count = 1;
1300         inode.i_size = statbuf.st_size;
1301         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1302                 close(fd);
1303                 return;
1304         }
1305         if (LINUX_S_ISREG(inode.i_mode)) {
1306                 retval = copy_file(fd, newfile);
1307                 if (retval)
1308                         com_err("copy_file", retval, "");
1309         }
1310         close(fd);
1311 }
1312
1313 void do_mknod(int argc, char *argv[])
1314 {
1315         unsigned long   mode, major, minor;
1316         ext2_ino_t      newfile;
1317         errcode_t       retval;
1318         struct ext2_inode inode;
1319         int             filetype, nr;
1320
1321         if (check_fs_open(argv[0]))
1322                 return;
1323         if (argc < 3 || argv[2][1]) {
1324         usage:
1325                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1326                 return;
1327         }
1328         mode = minor = major = 0;
1329         switch (argv[2][0]) {
1330                 case 'p':
1331                         mode = LINUX_S_IFIFO;
1332                         filetype = EXT2_FT_FIFO;
1333                         nr = 3;
1334                         break;
1335                 case 'c':
1336                         mode = LINUX_S_IFCHR;
1337                         filetype = EXT2_FT_CHRDEV;
1338                         nr = 5;
1339                         break;
1340                 case 'b':
1341                         mode = LINUX_S_IFBLK;
1342                         filetype = EXT2_FT_BLKDEV;
1343                         nr = 5;
1344                         break;
1345                 default:
1346                         filetype = 0;
1347                         nr = 0;
1348         }
1349         if (nr == 5) {
1350                 major = strtoul(argv[3], argv+3, 0);
1351                 minor = strtoul(argv[4], argv+4, 0);
1352                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1353                         nr = 0;
1354         }
1355         if (argc != nr)
1356                 goto usage;
1357         if (check_fs_read_write(argv[0]))
1358                 return;
1359         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1360         if (retval) {
1361                 com_err(argv[0], retval, "");
1362                 return;
1363         }
1364         printf("Allocated inode: %u\n", newfile);
1365         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1366         if (retval == EXT2_ET_DIR_NO_SPACE) {
1367                 retval = ext2fs_expand_dir(current_fs, cwd);
1368                 if (retval) {
1369                         com_err(argv[0], retval, "while expanding directory");
1370                         return;
1371                 }
1372                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1373                                      filetype);
1374         }
1375         if (retval) {
1376                 com_err(argv[1], retval, "");
1377                 return;
1378         }
1379         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1380                 com_err(argv[0], 0, "Warning: inode already set");
1381         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1382         ext2fs_mark_ib_dirty(current_fs);
1383         memset(&inode, 0, sizeof(inode));
1384         inode.i_mode = mode;
1385         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1386         if ((major < 256) && (minor < 256)) {
1387                 inode.i_block[0] = major*256+minor;
1388                 inode.i_block[1] = 0;
1389         } else {
1390                 inode.i_block[0] = 0;
1391                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1392         }
1393         inode.i_links_count = 1;
1394         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1395                 return;
1396 }
1397
1398 void do_mkdir(int argc, char *argv[])
1399 {
1400         char    *cp;
1401         ext2_ino_t      parent;
1402         char    *name;
1403         errcode_t retval;
1404
1405         if (common_args_process(argc, argv, 2, 2, "mkdir",
1406                                 "<filename>", CHECK_FS_RW))
1407                 return;
1408
1409         cp = strrchr(argv[1], '/');
1410         if (cp) {
1411                 *cp = 0;
1412                 parent = string_to_inode(argv[1]);
1413                 if (!parent) {
1414                         com_err(argv[1], ENOENT, "");
1415                         return;
1416                 }
1417                 name = cp+1;
1418         } else {
1419                 parent = cwd;
1420                 name = argv[1];
1421         }
1422
1423 try_again:
1424         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1425         if (retval == EXT2_ET_DIR_NO_SPACE) {
1426                 retval = ext2fs_expand_dir(current_fs, parent);
1427                 if (retval) {
1428                         com_err("argv[0]", retval, "while expanding directory");
1429                         return;
1430                 }
1431                 goto try_again;
1432         }
1433         if (retval) {
1434                 com_err("ext2fs_mkdir", retval, "");
1435                 return;
1436         }
1437
1438 }
1439
1440 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1441                                int blockcnt EXT2FS_ATTR((unused)),
1442                                void *private EXT2FS_ATTR((unused)))
1443 {
1444         blk_t   block;
1445
1446         block = *blocknr;
1447         ext2fs_block_alloc_stats(fs, block, -1);
1448         return 0;
1449 }
1450
1451 static void kill_file_by_inode(ext2_ino_t inode)
1452 {
1453         struct ext2_inode inode_buf;
1454
1455         if (debugfs_read_inode(inode, &inode_buf, 0))
1456                 return;
1457         inode_buf.i_dtime = time(NULL);
1458         if (debugfs_write_inode(inode, &inode_buf, 0))
1459                 return;
1460         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1461                 return;
1462
1463         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1464                              release_blocks_proc, NULL);
1465         printf("\n");
1466         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1467                                   LINUX_S_ISDIR(inode_buf.i_mode));
1468 }
1469
1470
1471 void do_kill_file(int argc, char *argv[])
1472 {
1473         ext2_ino_t inode_num;
1474
1475         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1476                 return;
1477
1478         kill_file_by_inode(inode_num);
1479 }
1480
1481 void do_rm(int argc, char *argv[])
1482 {
1483         int retval;
1484         ext2_ino_t inode_num;
1485         struct ext2_inode inode;
1486
1487         if (common_args_process(argc, argv, 2, 2, "rm",
1488                                 "<filename>", CHECK_FS_RW))
1489                 return;
1490
1491         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1492         if (retval) {
1493                 com_err(argv[0], retval, "while trying to resolve filename");
1494                 return;
1495         }
1496
1497         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1498                 return;
1499
1500         if (LINUX_S_ISDIR(inode.i_mode)) {
1501                 com_err(argv[0], 0, "file is a directory");
1502                 return;
1503         }
1504
1505         --inode.i_links_count;
1506         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1507                 return;
1508
1509         unlink_file_by_name(argv[1]);
1510         if (inode.i_links_count == 0)
1511                 kill_file_by_inode(inode_num);
1512 }
1513
1514 struct rd_struct {
1515         ext2_ino_t      parent;
1516         int             empty;
1517 };
1518
1519 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1520                       int       entry EXT2FS_ATTR((unused)),
1521                       struct ext2_dir_entry *dirent,
1522                       int       offset EXT2FS_ATTR((unused)),
1523                       int       blocksize EXT2FS_ATTR((unused)),
1524                       char      *buf EXT2FS_ATTR((unused)),
1525                       void      *private)
1526 {
1527         struct rd_struct *rds = (struct rd_struct *) private;
1528
1529         if (dirent->inode == 0)
1530                 return 0;
1531         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1532                 return 0;
1533         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1534             (dirent->name[1] == '.')) {
1535                 rds->parent = dirent->inode;
1536                 return 0;
1537         }
1538         rds->empty = 0;
1539         return 0;
1540 }
1541
1542 void do_rmdir(int argc, char *argv[])
1543 {
1544         int retval;
1545         ext2_ino_t inode_num;
1546         struct ext2_inode inode;
1547         struct rd_struct rds;
1548
1549         if (common_args_process(argc, argv, 2, 2, "rmdir",
1550                                 "<filename>", CHECK_FS_RW))
1551                 return;
1552
1553         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1554         if (retval) {
1555                 com_err(argv[0], retval, "while trying to resolve filename");
1556                 return;
1557         }
1558
1559         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1560                 return;
1561
1562         if (!LINUX_S_ISDIR(inode.i_mode)) {
1563                 com_err(argv[0], 0, "file is not a directory");
1564                 return;
1565         }
1566
1567         rds.parent = 0;
1568         rds.empty = 1;
1569
1570         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1571                                     0, rmdir_proc, &rds);
1572         if (retval) {
1573                 com_err(argv[0], retval, "while iterating over directory");
1574                 return;
1575         }
1576         if (rds.empty == 0) {
1577                 com_err(argv[0], 0, "directory not empty");
1578                 return;
1579         }
1580
1581         inode.i_links_count = 0;
1582         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1583                 return;
1584
1585         unlink_file_by_name(argv[1]);
1586         kill_file_by_inode(inode_num);
1587
1588         if (rds.parent) {
1589                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1590                         return;
1591                 if (inode.i_links_count > 1)
1592                         inode.i_links_count--;
1593                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1594                         return;
1595         }
1596 }
1597
1598 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1599                             char *argv[] EXT2FS_ATTR((unused)))
1600 {
1601         FILE *out = stdout;
1602
1603         if (current_fs)
1604                 fprintf(out, "Open mode: read-%s\n",
1605                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1606         fprintf(out, "Filesystem in use: %s\n",
1607                 current_fs ? current_fs->device_name : "--none--");
1608 }
1609
1610 void do_expand_dir(int argc, char *argv[])
1611 {
1612         ext2_ino_t inode;
1613         int retval;
1614
1615         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1616                 return;
1617
1618         retval = ext2fs_expand_dir(current_fs, inode);
1619         if (retval)
1620                 com_err("ext2fs_expand_dir", retval, "");
1621         return;
1622 }
1623
1624 void do_features(int argc, char *argv[])
1625 {
1626         int     i;
1627
1628         if (check_fs_open(argv[0]))
1629                 return;
1630
1631         if ((argc != 1) && check_fs_read_write(argv[0]))
1632                 return;
1633         for (i=1; i < argc; i++) {
1634                 if (e2p_edit_feature(argv[i],
1635                                      &current_fs->super->s_feature_compat, 0))
1636                         com_err(argv[0], 0, "Unknown feature: %s\n",
1637                                 argv[i]);
1638                 else
1639                         ext2fs_mark_super_dirty(current_fs);
1640         }
1641         print_features(current_fs->super, stdout);
1642 }
1643
1644 void do_bmap(int argc, char *argv[])
1645 {
1646         ext2_ino_t      ino;
1647         blk_t           blk, pblk;
1648         int             err;
1649         errcode_t       errcode;
1650
1651         if (common_args_process(argc, argv, 3, 3, argv[0],
1652                                 "<file> logical_blk", 0))
1653                 return;
1654
1655         ino = string_to_inode(argv[1]);
1656         if (!ino)
1657                 return;
1658         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1659
1660         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1661         if (errcode) {
1662                 com_err("argv[0]", errcode,
1663                         "while mapping logical block %d\n", blk);
1664                 return;
1665         }
1666         printf("%d\n", pblk);
1667 }
1668
1669 void do_imap(int argc, char *argv[])
1670 {
1671         ext2_ino_t      ino;
1672         unsigned long   group, block, block_nr, offset;
1673
1674         if (common_args_process(argc, argv, 2, 2, argv[0],
1675                                 "<file>", 0))
1676                 return;
1677         ino = string_to_inode(argv[1]);
1678         if (!ino)
1679                 return;
1680
1681         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1682         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1683                 EXT2_INODE_SIZE(current_fs->super);
1684         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1685         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1686                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1687                         group);
1688                 return;
1689         }
1690         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1691                 block;
1692         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1693
1694         printf("Inode %d is part of block group %lu\n"
1695                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1696                block_nr, offset);
1697
1698 }
1699
1700
1701
1702 static int source_file(const char *cmd_file, int sci_idx)
1703 {
1704         FILE            *f;
1705         char            buf[256];
1706         char            *cp;
1707         int             exit_status = 0;
1708         int             retval;
1709
1710         if (strcmp(cmd_file, "-") == 0)
1711                 f = stdin;
1712         else {
1713                 f = fopen(cmd_file, "r");
1714                 if (!f) {
1715                         perror(cmd_file);
1716                         exit(1);
1717                 }
1718         }
1719         setbuf(stdout, NULL);
1720         setbuf(stderr, NULL);
1721         while (!feof(f)) {
1722                 if (fgets(buf, sizeof(buf), f) == NULL)
1723                         break;
1724                 cp = strchr(buf, '\n');
1725                 if (cp)
1726                         *cp = 0;
1727                 cp = strchr(buf, '\r');
1728                 if (cp)
1729                         *cp = 0;
1730                 printf("debugfs: %s\n", buf);
1731                 retval = ss_execute_line(sci_idx, buf);
1732                 if (retval) {
1733                         ss_perror(sci_idx, retval, buf);
1734                         exit_status++;
1735                 }
1736         }
1737         return exit_status;
1738 }
1739
1740 int main(int argc, char **argv)
1741 {
1742         int             retval;
1743         int             sci_idx;
1744         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1745         int             c;
1746         int             open_flags = 0;
1747         char            *request = 0;
1748         int             exit_status = 0;
1749         char            *cmd_file = 0;
1750         blk_t           superblock = 0;
1751         blk_t           blocksize = 0;
1752         int             catastrophic = 0;
1753         char            *data_filename = 0;
1754
1755         initialize_ext2_error_table();
1756         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1757                  E2FSPROGS_DATE);
1758
1759         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1760                 switch (c) {
1761                 case 'R':
1762                         request = optarg;
1763                         break;
1764                 case 'f':
1765                         cmd_file = optarg;
1766                         break;
1767                 case 'd':
1768                         data_filename = optarg;
1769                         break;
1770                 case 'i':
1771                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1772                         break;
1773                 case 'w':
1774                         open_flags |= EXT2_FLAG_RW;
1775                         break;
1776                 case 'b':
1777                         blocksize = parse_ulong(optarg, argv[0],
1778                                                 "block size", 0);
1779                         break;
1780                 case 's':
1781                         superblock = parse_ulong(optarg, argv[0],
1782                                                  "superblock number", 0);
1783                         break;
1784                 case 'c':
1785                         catastrophic = 1;
1786                         break;
1787                 case 'V':
1788                         /* Print version number and exit */
1789                         fprintf(stderr, "\tUsing %s\n",
1790                                 error_message(EXT2_ET_BASE));
1791                         exit(0);
1792                 default:
1793                         com_err(argv[0], 0, usage);
1794                         return 1;
1795                 }
1796         }
1797         if (optind < argc)
1798                 open_filesystem(argv[optind], open_flags,
1799                                 superblock, blocksize, catastrophic,
1800                                 data_filename);
1801
1802         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1803                                        &debug_cmds, &retval);
1804         if (retval) {
1805                 ss_perror(sci_idx, retval, "creating invocation");
1806                 exit(1);
1807         }
1808         ss_get_readline(sci_idx);
1809
1810         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1811         if (retval) {
1812                 ss_perror(sci_idx, retval, "adding standard requests");
1813                 exit (1);
1814         }
1815         if (request) {
1816                 retval = 0;
1817                 retval = ss_execute_line(sci_idx, request);
1818                 if (retval) {
1819                         ss_perror(sci_idx, retval, request);
1820                         exit_status++;
1821                 }
1822         } else if (cmd_file) {
1823                 exit_status = source_file(cmd_file, sci_idx);
1824         } else {
1825                 ss_listen(sci_idx);
1826         }
1827
1828         if (current_fs)
1829                 close_filesystem();
1830
1831         return exit_status;
1832 }