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         int     c, err;
 124         int     catastrophic = 0;
 125         blk_t   superblock = 0;
 126         blk_t   blocksize = 0;
 127         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
 128         char    *data_filename = 0;
 129
 130         reset_getopt();
 131         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
 132                 switch (c) {
 133                 case 'i':
 134                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 135                         break;
 136                 case 'w':
 137                         open_flags |= EXT2_FLAG_RW;
 138                         break;
 139                 case 'f':
 140                         open_flags |= EXT2_FLAG_FORCE;
 141                         break;
 142                 case 'e':
 143                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 144                         break;
 145                 case 'c':
 146                         catastrophic = 1;
 147                         break;
 148                 case 'd':
 149                         data_filename = optarg;
 150                         break;
 151                 case 'b':
 152                         blocksize = parse_ulong(optarg, argv[0],
 153                                                 "block size", &err);
 154                         if (err)
 155                                 return;
 156                         break;
 157                 case 's':
 158                         superblock = parse_ulong(optarg, argv[0],
 159                                                  "superblock number", &err);
 160                         if (err)
 161                                 return;
 162                         break;
 163                 default:
 164                         goto print_usage;
 165                 }
 166         }
 167         if (optind != argc-1) {
 168                 goto print_usage;
 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         return;
 176
 177 print_usage:
 178         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 179                 "[-c] [-w] <device>\n", argv[0]);
 180 }
 181
 182 void do_lcd(int argc, char **argv)
 183 {
 184         if (common_args_process(argc, argv, 2, 2, "lcd",
 185                                 "<native dir>", 0))
 186                 return;
 187
 188         if (chdir(argv[1]) == -1) {
 189                 com_err(argv[0], errno,
 190                         "while trying to change native directory to %s",
 191                         argv[1]);
 192                 return;
 193         }
 194 }
 195
 196 static void close_filesystem(NOARGS)
 197 {
 198         int     retval;
 199
 200         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 201                 retval = ext2fs_write_inode_bitmap(current_fs);
 202                 if (retval)
 203                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 204         }
 205         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 206                 retval = ext2fs_write_block_bitmap(current_fs);
 207                 if (retval)
 208                         com_err("ext2fs_write_block_bitmap", retval, 0);
 209         }
 210         retval = ext2fs_close(current_fs);
 211         if (retval)
 212                 com_err("ext2fs_close", retval, 0);
 213         current_fs = NULL;
 214         return;
 215 }
 216
 217 void do_close_filesys(int argc, char **argv)
 218 {
 219         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 220                 return;
 221         close_filesystem();
 222 }
 223
 224 void do_init_filesys(int argc, char **argv)
 225 {
 226         struct ext2_super_block param;
 227         errcode_t       retval;
 228         int             err;
 229
 230         if (common_args_process(argc, argv, 3, 3, "initialize",
 231                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 232                 return;
 233
 234         memset(&param, 0, sizeof(struct ext2_super_block));
 235         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 236                                            "blocks count", &err);
 237         if (err)
 238                 return;
 239         retval = ext2fs_initialize(argv[1], 0, &param,
 240                                    unix_io_manager, &current_fs);
 241         if (retval) {
 242                 com_err(argv[1], retval, "while initializing filesystem");
 243                 current_fs = NULL;
 244                 return;
 245         }
 246         root = cwd = EXT2_ROOT_INO;
 247         return;
 248 }
 249
 250 static void print_features(struct ext2_super_block * s, FILE *f)
 251 {
 252         int     i, j, printed=0;
 253         __u32   *mask = &s->s_feature_compat, m;
 254
 255         fputs("Filesystem features:", f);
 256         for (i=0; i <3; i++,mask++) {
 257                 for (j=0,m=1; j < 32; j++, m<<=1) {
 258                         if (*mask & m) {
 259                                 fprintf(f, " %s", e2p_feature2string(i, m));
 260                                 printed++;
 261                         }
 262                 }
 263         }
 264         if (printed == 0)
 265                 fputs("(none)", f);
 266         fputs("\n", f);
 267 }
 268
 269 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
 270                           const char *str, int *first, FILE *f)
 271 {
 272         if (gdp->bg_flags & mask) {
 273                 if (*first) {
 274                         fputs("           [", f);
 275                         *first = 0;
 276                 } else
 277                         fputs(", ", f);
 278                 fputs(str, f);
 279         }
 280 }
 281
 282 void do_show_super_stats(int argc, char *argv[])
 283 {
 284         dgrp_t  i;
 285         FILE    *out;
 286         struct ext2_group_desc *gdp;
 287         int     c, header_only = 0;
 288         int     numdirs = 0, first;
 289
 290         reset_getopt();
 291         while ((c = getopt (argc, argv, "h")) != EOF) {
 292                 switch (c) {
 293                 case 'h':
 294                         header_only++;
 295                         break;
 296                 default:
 297                         goto print_usage;
 298                 }
 299         }
 300         if (optind != argc) {
 301                 goto print_usage;
 302         }
 303         if (check_fs_open(argv[0]))
 304                 return;
 305         out = open_pager();
 306
 307         list_super2(current_fs->super, out);
 308         for (i=0; i < current_fs->group_desc_count; i++)
 309                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 310         fprintf(out, "Directories:              %d\n", numdirs);
 311
 312         if (header_only) {
 313                 close_pager(out);
 314                 return;
 315         }
 316
 317         gdp = &current_fs->group_desc[0];
 318         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 319                 fprintf(out, " Group %2d: block bitmap at %u, "
 320                         "inode bitmap at %u, "
 321                         "inode table at %u\n"
 322                         "           %d free %s, "
 323                         "%d free %s, "
 324                         "%d used %s\n",
 325                         i, gdp->bg_block_bitmap,
 326                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 327                         gdp->bg_free_blocks_count,
 328                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 329                         gdp->bg_free_inodes_count,
 330                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 331                         gdp->bg_used_dirs_count,
 332                         gdp->bg_used_dirs_count != 1 ? "directories"
 333                                 : "directory");
 334                 first = 1;
 335                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
 336                               &first, out);
 337                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
 338                               &first, out);
 339                 if (!first)
 340                         fputs("]\n", out);
 341         }
 342         close_pager(out);
 343         return;
 344 print_usage:
 345         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 346 }
 347
 348 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 349                       char **argv EXT2FS_ATTR((unused)))
 350 {
 351         if (check_fs_open(argv[0]))
 352                 return;
 353         if (check_fs_read_write(argv[0]))
 354                 return;
 355
 356         if (argv[1] && !strcmp(argv[1], "-clean"))
 357                 current_fs->super->s_state |= EXT2_VALID_FS;
 358         else
 359                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 360         ext2fs_mark_super_dirty(current_fs);
 361 }
 362
 363 struct list_blocks_struct {
 364         FILE            *f;
 365         e2_blkcnt_t     total;
 366         blk_t           first_block, last_block;
 367         e2_blkcnt_t     first_bcnt, last_bcnt;
 368         e2_blkcnt_t     first;
 369 };
 370
 371 static void finish_range(struct list_blocks_struct *lb)
 372 {
 373         if (lb->first_block == 0)
 374                 return;
 375         if (lb->first)
 376                 lb->first = 0;
 377         else
 378                 fprintf(lb->f, ", ");
 379         if (lb->first_block == lb->last_block)
 380                 fprintf(lb->f, "(%lld):%u", lb->first_bcnt, lb->first_block);
 381         else
 382                 fprintf(lb->f, "(%lld-%lld):%u-%u", lb->first_bcnt,
 383                         lb->last_bcnt, lb->first_block, lb->last_block);
 384         lb->first_block = 0;
 385 }
 386
 387 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 388                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 389                             blk_t ref_block EXT2FS_ATTR((unused)),
 390                             int ref_offset EXT2FS_ATTR((unused)),
 391                             void *private)
 392 {
 393         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 394
 395         lb->total++;
 396         if (blockcnt >= 0) {
 397                 /*
 398                  * See if we can add on to the existing range (if it exists)
 399                  */
 400                 if (lb->first_block &&
 401                     (lb->last_block+1 == *blocknr) &&
 402                     (lb->last_bcnt+1 == blockcnt)) {
 403                         lb->last_block = *blocknr;
 404                         lb->last_bcnt = blockcnt;
 405                         return 0;
 406                 }
 407                 /*
 408                  * Start a new range.
 409                  */
 410                 finish_range(lb);
 411                 lb->first_block = lb->last_block = *blocknr;
 412                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 413                 return 0;
 414         }
 415         /*
 416          * Not a normal block.  Always force a new range.
 417          */
 418         finish_range(lb);
 419         if (lb->first)
 420                 lb->first = 0;
 421         else
 422                 fprintf(lb->f, ", ");
 423         if (blockcnt == -1)
 424                 fprintf(lb->f, "(IND):%u", *blocknr);
 425         else if (blockcnt == -2)
 426                 fprintf(lb->f, "(DIND):%u", *blocknr);
 427         else if (blockcnt == -3)
 428                 fprintf(lb->f, "(TIND):%u", *blocknr);
 429         return 0;
 430 }
 431
 432 static void dump_xattr_string(FILE *out, const char *str, int len)
 433 {
 434         int printable = 1;
 435         int i;
 436
 437         /* check is string printable? */
 438         for (i = 0; i < len; i++)
 439                 if (!isprint(str[i])) {
 440                         printable = 0;
 441                         break;
 442                 }
 443
 444         for (i = 0; i < len; i++)
 445                 if (printable)
 446                         fprintf(out, "%c", (unsigned char)str[i]);
 447                 else
 448                         fprintf(out, "%02x ", (unsigned char)str[i]);
 449 }
 450
 451 static void internal_dump_inode_extra(FILE *out, const char *prefix,
 452                                       ext2_ino_t inode_num,
 453                                       struct ext2_inode_large *inode)
 454 {
 455         struct ext2_ext_attr_entry *entry;
 456         __u32 *magic;
 457         char *start, *end;
 458         unsigned int storage_size;
 459
 460         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 461         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 462                         EXT2_GOOD_OLD_INODE_SIZE) {
 463                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 464                                 inode->i_extra_isize);
 465                 return;
 466         }
 467         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 468                         EXT2_GOOD_OLD_INODE_SIZE -
 469                         inode->i_extra_isize;
 470         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 471                         inode->i_extra_isize);
 472         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 473                 fprintf(out, "Extended attributes stored in inode body: \n");
 474                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 475                 start = (char *) magic + sizeof(__u32);
 476                 entry = (struct ext2_ext_attr_entry *) start;
 477                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 478                         struct ext2_ext_attr_entry *next =
 479                                 EXT2_EXT_ATTR_NEXT(entry);
 480                         if (entry->e_value_size > storage_size ||
 481                                         (char *) next >= end) {
 482                                 fprintf(out, "invalid EA entry in inode\n");
 483                                 return;
 484                         }
 485                         fprintf(out, "  ");
 486                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 487                                           entry->e_name_len);
 488                         fprintf(out, " = \"");
 489                         dump_xattr_string(out, start + entry->e_value_offs,
 490                                                 entry->e_value_size);
 491                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 492                         entry = next;
 493                 }
 494         }
 495 }
 496
 497 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 498 {
 499         struct list_blocks_struct lb;
 500
 501         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 502         lb.total = 0;
 503         lb.first_block = 0;
 504         lb.f = f;
 505         lb.first = 1;
 506         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 507                              list_blocks_proc, (void *)&lb);
 508         finish_range(&lb);
 509         if (lb.total)
 510                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 511         fprintf(f,"\n");
 512 }
 513
 514
 515 void internal_dump_inode(FILE *out, const char *prefix,
 516                          ext2_ino_t inode_num, struct ext2_inode *inode,
 517                          int do_dump_blocks)
 518 {
 519         const char *i_type;
 520         char frag, fsize;
 521         int os = current_fs->super->s_creator_os;
 522
 523         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 524         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 525         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 526         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 527         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 528         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 529         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 530         else i_type = "bad type";
 531         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 532         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 533                 prefix,
 534                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 535         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 536                 prefix, inode->i_uid, inode->i_gid);
 537         if (LINUX_S_ISREG(inode->i_mode)) {
 538                 __u64 i_size = (inode->i_size |
 539                                 ((unsigned long long)inode->i_size_high << 32));
 540
 541                 fprintf(out, "%lld\n", i_size);
 542         } else
 543                 fprintf(out, "%d\n", inode->i_size);
 544         if (os == EXT2_OS_HURD)
 545                 fprintf(out,
 546                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 547                         prefix,
 548                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 549                         inode->osd1.hurd1.h_i_translator);
 550         else
 551                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 552                         prefix,
 553                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 554         if (os == EXT2_OS_LINUX)
 555                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 556                         prefix, inode->i_links_count,
 557                         (((unsigned long long)
 558                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 559                         inode->i_blocks);
 560         else
 561                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 562                         prefix, inode->i_links_count, inode->i_blocks);
 563         switch (os) {
 564             case EXT2_OS_HURD:
 565                 frag = inode->osd2.hurd2.h_i_frag;
 566                 fsize = inode->osd2.hurd2.h_i_fsize;
 567                 break;
 568             case EXT2_OS_MASIX:
 569                 frag = inode->osd2.masix2.m_i_frag;
 570                 fsize = inode->osd2.masix2.m_i_fsize;
 571                 break;
 572             default:
 573                 frag = fsize = 0;
 574         }
 575         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 576                 prefix, inode->i_faddr, frag, fsize);
 577         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 578                 time_to_string(inode->i_ctime));
 579         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 580                 time_to_string(inode->i_atime));
 581         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 582                 time_to_string(inode->i_mtime));
 583         if (inode->i_dtime)
 584           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 585                   time_to_string(inode->i_dtime));
 586         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 587                 internal_dump_inode_extra(out, prefix, inode_num,
 588                                           (struct ext2_inode_large *) inode);
 589         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 590                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 591                         (int) inode->i_size, (char *)inode->i_block);
 592         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 593                 int major, minor;
 594                 const char *devnote;
 595
 596                 if (inode->i_block[0]) {
 597                         major = (inode->i_block[0] >> 8) & 255;
 598                         minor = inode->i_block[0] & 255;
 599                         devnote = "";
 600                 } else {
 601                         major = (inode->i_block[1] & 0xfff00) >> 8;
 602                         minor = ((inode->i_block[1] & 0xff) |
 603                                  ((inode->i_block[1] >> 12) & 0xfff00));
 604                         devnote = "(New-style) ";
 605                 }
 606                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 607                         devnote, major, minor, major, minor);
 608         }
 609         else if (do_dump_blocks)
 610                 dump_blocks(out, prefix, inode_num);
 611 }
 612
 613 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 614 {
 615         FILE    *out;
 616
 617         out = open_pager();
 618         internal_dump_inode(out, "", inode_num, inode, 1);
 619         close_pager(out);
 620 }
 621
 622 void do_stat(int argc, char *argv[])
 623 {
 624         ext2_ino_t      inode;
 625         struct ext2_inode * inode_buf;
 626
 627         if (check_fs_open(argv[0]))
 628                 return;
 629
 630         inode_buf = (struct ext2_inode *)
 631                         malloc(EXT2_INODE_SIZE(current_fs->super));
 632         if (!inode_buf) {
 633                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 634                 return;
 635         }
 636
 637         if (common_inode_args_process(argc, argv, &inode, 0)) {
 638                 free(inode_buf);
 639                 return;
 640         }
 641
 642         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 643                                         EXT2_INODE_SIZE(current_fs->super))) {
 644                 free(inode_buf);
 645                 return;
 646         }
 647
 648         dump_inode(inode, inode_buf);
 649         free(inode_buf);
 650         return;
 651 }
 652
 653 void do_chroot(int argc, char *argv[])
 654 {
 655         ext2_ino_t inode;
 656         int retval;
 657
 658         if (common_inode_args_process(argc, argv, &inode, 0))
 659                 return;
 660
 661         retval = ext2fs_check_directory(current_fs, inode);
 662         if (retval)  {
 663                 com_err(argv[1], retval, 0);
 664                 return;
 665         }
 666         root = inode;
 667 }
 668
 669 void do_clri(int argc, char *argv[])
 670 {
 671         ext2_ino_t inode;
 672         struct ext2_inode inode_buf;
 673
 674         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 675                 return;
 676
 677         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 678                 return;
 679         memset(&inode_buf, 0, sizeof(inode_buf));
 680         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 681                 return;
 682 }
 683
 684 void do_freei(int argc, char *argv[])
 685 {
 686         ext2_ino_t inode;
 687
 688         if (common_inode_args_process(argc, argv, &inode,
 689                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 690                 return;
 691
 692         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 693                 com_err(argv[0], 0, "Warning: inode already clear");
 694         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 695         ext2fs_mark_ib_dirty(current_fs);
 696 }
 697
 698 void do_seti(int argc, char *argv[])
 699 {
 700         ext2_ino_t inode;
 701
 702         if (common_inode_args_process(argc, argv, &inode,
 703                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 704                 return;
 705
 706         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 707                 com_err(argv[0], 0, "Warning: inode already set");
 708         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 709         ext2fs_mark_ib_dirty(current_fs);
 710 }
 711
 712 void do_testi(int argc, char *argv[])
 713 {
 714         ext2_ino_t inode;
 715
 716         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 717                 return;
 718
 719         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 720                 printf("Inode %u is marked in use\n", inode);
 721         else
 722                 printf("Inode %u is not in use\n", inode);
 723 }
 724
 725 void do_freeb(int argc, char *argv[])
 726 {
 727         blk_t block;
 728         int count = 1;
 729
 730         if (common_block_args_process(argc, argv, &block, &count))
 731                 return;
 732         if (check_fs_read_write(argv[0]))
 733                 return;
 734         while (count-- > 0) {
 735                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 736                         com_err(argv[0], 0, "Warning: block %u already clear",
 737                                 block);
 738                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 739                 block++;
 740         }
 741         ext2fs_mark_bb_dirty(current_fs);
 742 }
 743
 744 void do_setb(int argc, char *argv[])
 745 {
 746         blk_t block;
 747         int count = 1;
 748
 749         if (common_block_args_process(argc, argv, &block, &count))
 750                 return;
 751         if (check_fs_read_write(argv[0]))
 752                 return;
 753         while (count-- > 0) {
 754                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 755                         com_err(argv[0], 0, "Warning: block %u already set",
 756                                 block);
 757                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 758                 block++;
 759         }
 760         ext2fs_mark_bb_dirty(current_fs);
 761 }
 762
 763 void do_testb(int argc, char *argv[])
 764 {
 765         blk_t block;
 766         int count = 1;
 767
 768         if (common_block_args_process(argc, argv, &block, &count))
 769                 return;
 770         while (count-- > 0) {
 771                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 772                         printf("Block %u marked in use\n", block);
 773                 else
 774                         printf("Block %u not in use\n", block);
 775                 block++;
 776         }
 777 }
 778
 779 static void modify_u8(char *com, const char *prompt,
 780                       const char *format, __u8 *val)
 781 {
 782         char buf[200];
 783         unsigned long v;
 784         char *tmp;
 785
 786         sprintf(buf, format, *val);
 787         printf("%30s    [%s] ", prompt, buf);
 788         fgets(buf, sizeof(buf), stdin);
 789         if (buf[strlen (buf) - 1] == '\n')
 790                 buf[strlen (buf) - 1] = '\0';
 791         if (!buf[0])
 792                 return;
 793         v = strtoul(buf, &tmp, 0);
 794         if (*tmp)
 795                 com_err(com, 0, "Bad value - %s", buf);
 796         else
 797                 *val = v;
 798 }
 799
 800 static void modify_u16(char *com, const char *prompt,
 801                        const char *format, __u16 *val)
 802 {
 803         char buf[200];
 804         unsigned long v;
 805         char *tmp;
 806
 807         sprintf(buf, format, *val);
 808         printf("%30s    [%s] ", prompt, buf);
 809         fgets(buf, sizeof(buf), stdin);
 810         if (buf[strlen (buf) - 1] == '\n')
 811                 buf[strlen (buf) - 1] = '\0';
 812         if (!buf[0])
 813                 return;
 814         v = strtoul(buf, &tmp, 0);
 815         if (*tmp)
 816                 com_err(com, 0, "Bad value - %s", buf);
 817         else
 818                 *val = v;
 819 }
 820
 821 static void modify_u32(char *com, const char *prompt,
 822                        const char *format, __u32 *val)
 823 {
 824         char buf[200];
 825         unsigned long v;
 826         char *tmp;
 827
 828         sprintf(buf, format, *val);
 829         printf("%30s    [%s] ", prompt, buf);
 830         fgets(buf, sizeof(buf), stdin);
 831         if (buf[strlen (buf) - 1] == '\n')
 832                 buf[strlen (buf) - 1] = '\0';
 833         if (!buf[0])
 834                 return;
 835         v = strtoul(buf, &tmp, 0);
 836         if (*tmp)
 837                 com_err(com, 0, "Bad value - %s", buf);
 838         else
 839                 *val = v;
 840 }
 841
 842
 843 void do_modify_inode(int argc, char *argv[])
 844 {
 845         struct ext2_inode inode;
 846         ext2_ino_t      inode_num;
 847         int             i;
 848         unsigned char   *frag, *fsize;
 849         char            buf[80];
 850         int             os;
 851         const char      *hex_format = "0x%x";
 852         const char      *octal_format = "0%o";
 853         const char      *decimal_format = "%d";
 854         const char      *unsignedlong_format = "%lu";
 855
 856         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 857                 return;
 858
 859         os = current_fs->super->s_creator_os;
 860
 861         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 862                 return;
 863
 864         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 865         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 866         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 867         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 868         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 869         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 870         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 871         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 872         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 873         if (os == EXT2_OS_LINUX)
 874                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 875                            &inode.osd2.linux2.l_i_blocks_hi);
 876         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 877         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 878         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 879 #if 0
 880         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 881 #endif
 882         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 883         if (LINUX_S_ISDIR(inode.i_mode))
 884                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 885         else
 886                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 887
 888         if (os == EXT2_OS_HURD)
 889                 modify_u32(argv[0], "Translator Block",
 890                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 891
 892         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 893         switch (os) {
 894             case EXT2_OS_HURD:
 895                 frag = &inode.osd2.hurd2.h_i_frag;
 896                 fsize = &inode.osd2.hurd2.h_i_fsize;
 897                 break;
 898             case EXT2_OS_MASIX:
 899                 frag = &inode.osd2.masix2.m_i_frag;
 900                 fsize = &inode.osd2.masix2.m_i_fsize;
 901                 break;
 902             default:
 903                 frag = fsize = 0;
 904         }
 905         if (frag)
 906                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 907         if (fsize)
 908                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 909
 910         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 911                 sprintf(buf, "Direct Block #%d", i);
 912                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 913         }
 914         modify_u32(argv[0], "Indirect Block", decimal_format,
 915                     &inode.i_block[EXT2_IND_BLOCK]);
 916         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 917                     &inode.i_block[EXT2_DIND_BLOCK]);
 918         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 919                     &inode.i_block[EXT2_TIND_BLOCK]);
 920         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 921                 return;
 922 }
 923
 924 void do_change_working_dir(int argc, char *argv[])
 925 {
 926         ext2_ino_t      inode;
 927         int             retval;
 928
 929         if (common_inode_args_process(argc, argv, &inode, 0))
 930                 return;
 931
 932         retval = ext2fs_check_directory(current_fs, inode);
 933         if (retval) {
 934                 com_err(argv[1], retval, 0);
 935                 return;
 936         }
 937         cwd = inode;
 938         return;
 939 }
 940
 941 void do_print_working_directory(int argc, char *argv[])
 942 {
 943         int     retval;
 944         char    *pathname = NULL;
 945
 946         if (common_args_process(argc, argv, 1, 1,
 947                                 "print_working_directory", "", 0))
 948                 return;
 949
 950         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 951         if (retval) {
 952                 com_err(argv[0], retval,
 953                         "while trying to get pathname of cwd");
 954         }
 955         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 956         free(pathname);
 957         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 958         if (retval) {
 959                 com_err(argv[0], retval,
 960                         "while trying to get pathname of root");
 961         }
 962         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 963         free(pathname);
 964         return;
 965 }
 966
 967 /*
 968  * Given a mode, return the ext2 file type
 969  */
 970 static int ext2_file_type(unsigned int mode)
 971 {
 972         if (LINUX_S_ISREG(mode))
 973                 return EXT2_FT_REG_FILE;
 974
 975         if (LINUX_S_ISDIR(mode))
 976                 return EXT2_FT_DIR;
 977
 978         if (LINUX_S_ISCHR(mode))
 979                 return EXT2_FT_CHRDEV;
 980
 981         if (LINUX_S_ISBLK(mode))
 982                 return EXT2_FT_BLKDEV;
 983
 984         if (LINUX_S_ISLNK(mode))
 985                 return EXT2_FT_SYMLINK;
 986
 987         if (LINUX_S_ISFIFO(mode))
 988                 return EXT2_FT_FIFO;
 989
 990         if (LINUX_S_ISSOCK(mode))
 991                 return EXT2_FT_SOCK;
 992
 993         return 0;
 994 }
 995
 996 static void make_link(char *sourcename, char *destname)
 997 {
 998         ext2_ino_t      ino;
 999         struct ext2_inode inode;
1000         int             retval;
1001         ext2_ino_t      dir;
1002         char            *dest, *cp, *basename;
1003
1004         /*
1005          * Get the source inode
1006          */
1007         ino = string_to_inode(sourcename);
1008         if (!ino)
1009                 return;
1010         basename = strrchr(sourcename, '/');
1011         if (basename)
1012                 basename++;
1013         else
1014                 basename = sourcename;
1015         /*
1016          * Figure out the destination.  First see if it exists and is
1017          * a directory.
1018          */
1019         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1020                 dest = basename;
1021         else {
1022                 /*
1023                  * OK, it doesn't exist.  See if it is
1024                  * '<dir>/basename' or 'basename'
1025                  */
1026                 cp = strrchr(destname, '/');
1027                 if (cp) {
1028                         *cp = 0;
1029                         dir = string_to_inode(destname);
1030                         if (!dir)
1031                                 return;
1032                         dest = cp+1;
1033                 } else {
1034                         dir = cwd;
1035                         dest = destname;
1036                 }
1037         }
1038
1039         if (debugfs_read_inode(ino, &inode, sourcename))
1040                 return;
1041
1042         retval = ext2fs_link(current_fs, dir, dest, ino,
1043                              ext2_file_type(inode.i_mode));
1044         if (retval)
1045                 com_err("make_link", retval, 0);
1046         return;
1047 }
1048
1049
1050 void do_link(int argc, char *argv[])
1051 {
1052         if (common_args_process(argc, argv, 3, 3, "link",
1053                                 "<source file> <dest_name>", CHECK_FS_RW))
1054                 return;
1055
1056         make_link(argv[1], argv[2]);
1057 }
1058
1059 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1060                             int blockcnt EXT2FS_ATTR((unused)),
1061                             void *private EXT2FS_ATTR((unused)))
1062 {
1063         blk_t   block;
1064
1065         block = *blocknr;
1066         ext2fs_block_alloc_stats(fs, block, +1);
1067         return 0;
1068 }
1069
1070 void do_undel(int argc, char *argv[])
1071 {
1072         ext2_ino_t      ino;
1073         struct ext2_inode inode;
1074
1075         if (common_args_process(argc, argv, 3, 3, "undelete",
1076                                 "<inode_num> <dest_name>",
1077                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1078                 return;
1079
1080         ino = string_to_inode(argv[1]);
1081         if (!ino)
1082                 return;
1083
1084         if (debugfs_read_inode(ino, &inode, argv[1]))
1085                 return;
1086
1087         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1088                 com_err(argv[1], 0, "Inode is not marked as deleted");
1089                 return;
1090         }
1091
1092         /*
1093          * XXX this function doesn't handle changing the links count on the
1094          * parent directory when undeleting a directory.
1095          */
1096         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1097         inode.i_dtime = 0;
1098
1099         if (debugfs_write_inode(ino, &inode, argv[0]))
1100                 return;
1101
1102         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1103                              mark_blocks_proc, NULL);
1104
1105         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1106
1107         make_link(argv[1], argv[2]);
1108 }
1109
1110 static void unlink_file_by_name(char *filename)
1111 {
1112         int             retval;
1113         ext2_ino_t      dir;
1114         char            *basename;
1115
1116         basename = strrchr(filename, '/');
1117         if (basename) {
1118                 *basename++ = '\0';
1119                 dir = string_to_inode(filename);
1120                 if (!dir)
1121                         return;
1122         } else {
1123                 dir = cwd;
1124                 basename = filename;
1125         }
1126         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1127         if (retval)
1128                 com_err("unlink_file_by_name", retval, 0);
1129         return;
1130 }
1131
1132 void do_unlink(int argc, char *argv[])
1133 {
1134         if (common_args_process(argc, argv, 2, 2, "link",
1135                                 "<pathname>", CHECK_FS_RW))
1136                 return;
1137
1138         unlink_file_by_name(argv[1]);
1139 }
1140
1141 void do_find_free_block(int argc, char *argv[])
1142 {
1143         blk_t   free_blk, goal;
1144         int             count;
1145         errcode_t       retval;
1146         char            *tmp;
1147
1148         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1149                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1150                 return;
1151         }
1152         if (check_fs_open(argv[0]))
1153                 return;
1154
1155         if (argc > 1) {
1156                 count = strtol(argv[1],&tmp,0);
1157                 if (*tmp) {
1158                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1159                         return;
1160                 }
1161         } else
1162                 count = 1;
1163
1164         if (argc > 2) {
1165                 goal = strtol(argv[2], &tmp, 0);
1166                 if (*tmp) {
1167                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1168                         return;
1169                 }
1170         }
1171         else
1172                 goal = current_fs->super->s_first_data_block;
1173
1174         printf("Free blocks found: ");
1175         free_blk = goal - 1;
1176         while (count-- > 0) {
1177                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1178                                           &free_blk);
1179                 if (retval) {
1180                         com_err("ext2fs_new_block", retval, 0);
1181                         return;
1182                 } else
1183                         printf("%u ", free_blk);
1184         }
1185         printf("\n");
1186 }
1187
1188 void do_find_free_inode(int argc, char *argv[])
1189 {
1190         ext2_ino_t      free_inode, dir;
1191         int             mode;
1192         int             retval;
1193         char            *tmp;
1194
1195         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1196                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1197                 return;
1198         }
1199         if (check_fs_open(argv[0]))
1200                 return;
1201
1202         if (argc > 1) {
1203                 dir = strtol(argv[1], &tmp, 0);
1204                 if (*tmp) {
1205                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1206                         return;
1207                 }
1208         }
1209         else
1210                 dir = root;
1211         if (argc > 2) {
1212                 mode = strtol(argv[2], &tmp, 0);
1213                 if (*tmp) {
1214                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1215                         return;
1216                 }
1217         } else
1218                 mode = 010755;
1219
1220         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1221         if (retval)
1222                 com_err("ext2fs_new_inode", retval, 0);
1223         else
1224                 printf("Free inode found: %u\n", free_inode);
1225 }
1226
1227 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1228 {
1229         ext2_file_t     e2_file;
1230         errcode_t       retval;
1231         int             got;
1232         unsigned int    written;
1233         char            buf[8192];
1234         char            *ptr;
1235
1236         retval = ext2fs_file_open(current_fs, newfile,
1237                                   EXT2_FILE_WRITE, &e2_file);
1238         if (retval)
1239                 return retval;
1240
1241         while (1) {
1242                 got = read(fd, buf, sizeof(buf));
1243                 if (got == 0)
1244                         break;
1245                 if (got < 0) {
1246                         retval = errno;
1247                         goto fail;
1248                 }
1249                 ptr = buf;
1250                 while (got > 0) {
1251                         retval = ext2fs_file_write(e2_file, ptr,
1252                                                    got, &written);
1253                         if (retval)
1254                                 goto fail;
1255
1256                         got -= written;
1257                         ptr += written;
1258                 }
1259         }
1260         retval = ext2fs_file_close(e2_file);
1261         return retval;
1262
1263 fail:
1264         (void) ext2fs_file_close(e2_file);
1265         return retval;
1266 }
1267
1268
1269 void do_write(int argc, char *argv[])
1270 {
1271         int             fd;
1272         struct stat     statbuf;
1273         ext2_ino_t      newfile;
1274         errcode_t       retval;
1275         struct ext2_inode inode;
1276
1277         if (common_args_process(argc, argv, 3, 3, "write",
1278                                 "<native file> <new file>", CHECK_FS_RW))
1279                 return;
1280
1281         fd = open(argv[1], O_RDONLY);
1282         if (fd < 0) {
1283                 com_err(argv[1], errno, 0);
1284                 return;
1285         }
1286         if (fstat(fd, &statbuf) < 0) {
1287                 com_err(argv[1], errno, 0);
1288                 close(fd);
1289                 return;
1290         }
1291
1292         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1293         if (retval == 0) {
1294                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1295                 close(fd);
1296                 return;
1297         }
1298
1299         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1300         if (retval) {
1301                 com_err(argv[0], retval, 0);
1302                 close(fd);
1303                 return;
1304         }
1305         printf("Allocated inode: %u\n", newfile);
1306         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1307                              EXT2_FT_REG_FILE);
1308         if (retval == EXT2_ET_DIR_NO_SPACE) {
1309                 retval = ext2fs_expand_dir(current_fs, cwd);
1310                 if (retval) {
1311                         com_err(argv[0], retval, "while expanding directory");
1312                         return;
1313                 }
1314                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1315                                      EXT2_FT_REG_FILE);
1316         }
1317         if (retval) {
1318                 com_err(argv[2], retval, 0);
1319                 close(fd);
1320                 return;
1321         }
1322         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1323                 com_err(argv[0], 0, "Warning: inode already set");
1324         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1325         memset(&inode, 0, sizeof(inode));
1326         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1327         inode.i_atime = inode.i_ctime = inode.i_mtime =
1328                 current_fs->now ? current_fs->now : time(0);
1329         inode.i_links_count = 1;
1330         inode.i_size = statbuf.st_size;
1331         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1332                 close(fd);
1333                 return;
1334         }
1335         if (LINUX_S_ISREG(inode.i_mode)) {
1336                 retval = copy_file(fd, newfile);
1337                 if (retval)
1338                         com_err("copy_file", retval, 0);
1339         }
1340         close(fd);
1341 }
1342
1343 void do_mknod(int argc, char *argv[])
1344 {
1345         unsigned long   mode, major, minor;
1346         ext2_ino_t      newfile;
1347         errcode_t       retval;
1348         struct ext2_inode inode;
1349         int             filetype, nr;
1350
1351         if (check_fs_open(argv[0]))
1352                 return;
1353         if (argc < 3 || argv[2][1]) {
1354         usage:
1355                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1356                 return;
1357         }
1358         mode = minor = major = 0;
1359         switch (argv[2][0]) {
1360                 case 'p':
1361                         mode = LINUX_S_IFIFO;
1362                         filetype = EXT2_FT_FIFO;
1363                         nr = 3;
1364                         break;
1365                 case 'c':
1366                         mode = LINUX_S_IFCHR;
1367                         filetype = EXT2_FT_CHRDEV;
1368                         nr = 5;
1369                         break;
1370                 case 'b':
1371                         mode = LINUX_S_IFBLK;
1372                         filetype = EXT2_FT_BLKDEV;
1373                         nr = 5;
1374                         break;
1375                 default:
1376                         filetype = 0;
1377                         nr = 0;
1378         }
1379         if (nr == 5) {
1380                 major = strtoul(argv[3], argv+3, 0);
1381                 minor = strtoul(argv[4], argv+4, 0);
1382                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1383                         nr = 0;
1384         }
1385         if (argc != nr)
1386                 goto usage;
1387         if (check_fs_read_write(argv[0]))
1388                 return;
1389         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1390         if (retval) {
1391                 com_err(argv[0], retval, 0);
1392                 return;
1393         }
1394         printf("Allocated inode: %u\n", newfile);
1395         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1396         if (retval == EXT2_ET_DIR_NO_SPACE) {
1397                 retval = ext2fs_expand_dir(current_fs, cwd);
1398                 if (retval) {
1399                         com_err(argv[0], retval, "while expanding directory");
1400                         return;
1401                 }
1402                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1403                                      filetype);
1404         }
1405         if (retval) {
1406                 com_err(argv[1], retval, 0);
1407                 return;
1408         }
1409         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1410                 com_err(argv[0], 0, "Warning: inode already set");
1411         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1412         ext2fs_mark_ib_dirty(current_fs);
1413         memset(&inode, 0, sizeof(inode));
1414         inode.i_mode = mode;
1415         inode.i_atime = inode.i_ctime = inode.i_mtime =
1416                 current_fs->now ? current_fs->now : time(0);
1417         if ((major < 256) && (minor < 256)) {
1418                 inode.i_block[0] = major*256+minor;
1419                 inode.i_block[1] = 0;
1420         } else {
1421                 inode.i_block[0] = 0;
1422                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1423         }
1424         inode.i_links_count = 1;
1425         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1426                 return;
1427 }
1428
1429 void do_mkdir(int argc, char *argv[])
1430 {
1431         char    *cp;
1432         ext2_ino_t      parent;
1433         char    *name;
1434         errcode_t retval;
1435
1436         if (common_args_process(argc, argv, 2, 2, "mkdir",
1437                                 "<filename>", CHECK_FS_RW))
1438                 return;
1439
1440         cp = strrchr(argv[1], '/');
1441         if (cp) {
1442                 *cp = 0;
1443                 parent = string_to_inode(argv[1]);
1444                 if (!parent) {
1445                         com_err(argv[1], ENOENT, 0);
1446                         return;
1447                 }
1448                 name = cp+1;
1449         } else {
1450                 parent = cwd;
1451                 name = argv[1];
1452         }
1453
1454 try_again:
1455         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1456         if (retval == EXT2_ET_DIR_NO_SPACE) {
1457                 retval = ext2fs_expand_dir(current_fs, parent);
1458                 if (retval) {
1459                         com_err("argv[0]", retval, "while expanding directory");
1460                         return;
1461                 }
1462                 goto try_again;
1463         }
1464         if (retval) {
1465                 com_err("ext2fs_mkdir", retval, 0);
1466                 return;
1467         }
1468
1469 }
1470
1471 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1472                                int blockcnt EXT2FS_ATTR((unused)),
1473                                void *private EXT2FS_ATTR((unused)))
1474 {
1475         blk_t   block;
1476
1477         block = *blocknr;
1478         ext2fs_block_alloc_stats(fs, block, -1);
1479         return 0;
1480 }
1481
1482 static void kill_file_by_inode(ext2_ino_t inode)
1483 {
1484         struct ext2_inode inode_buf;
1485
1486         if (debugfs_read_inode(inode, &inode_buf, 0))
1487                 return;
1488         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1489         if (debugfs_write_inode(inode, &inode_buf, 0))
1490                 return;
1491         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1492                 return;
1493
1494         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1495                              release_blocks_proc, NULL);
1496         printf("\n");
1497         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1498                                   LINUX_S_ISDIR(inode_buf.i_mode));
1499 }
1500
1501
1502 void do_kill_file(int argc, char *argv[])
1503 {
1504         ext2_ino_t inode_num;
1505
1506         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1507                 return;
1508
1509         kill_file_by_inode(inode_num);
1510 }
1511
1512 void do_rm(int argc, char *argv[])
1513 {
1514         int retval;
1515         ext2_ino_t inode_num;
1516         struct ext2_inode inode;
1517
1518         if (common_args_process(argc, argv, 2, 2, "rm",
1519                                 "<filename>", CHECK_FS_RW))
1520                 return;
1521
1522         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1523         if (retval) {
1524                 com_err(argv[0], retval, "while trying to resolve filename");
1525                 return;
1526         }
1527
1528         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1529                 return;
1530
1531         if (LINUX_S_ISDIR(inode.i_mode)) {
1532                 com_err(argv[0], 0, "file is a directory");
1533                 return;
1534         }
1535
1536         --inode.i_links_count;
1537         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1538                 return;
1539
1540         unlink_file_by_name(argv[1]);
1541         if (inode.i_links_count == 0)
1542                 kill_file_by_inode(inode_num);
1543 }
1544
1545 struct rd_struct {
1546         ext2_ino_t      parent;
1547         int             empty;
1548 };
1549
1550 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1551                       int       entry EXT2FS_ATTR((unused)),
1552                       struct ext2_dir_entry *dirent,
1553                       int       offset EXT2FS_ATTR((unused)),
1554                       int       blocksize EXT2FS_ATTR((unused)),
1555                       char      *buf EXT2FS_ATTR((unused)),
1556                       void      *private)
1557 {
1558         struct rd_struct *rds = (struct rd_struct *) private;
1559
1560         if (dirent->inode == 0)
1561                 return 0;
1562         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1563                 return 0;
1564         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1565             (dirent->name[1] == '.')) {
1566                 rds->parent = dirent->inode;
1567                 return 0;
1568         }
1569         rds->empty = 0;
1570         return 0;
1571 }
1572
1573 void do_rmdir(int argc, char *argv[])
1574 {
1575         int retval;
1576         ext2_ino_t inode_num;
1577         struct ext2_inode inode;
1578         struct rd_struct rds;
1579
1580         if (common_args_process(argc, argv, 2, 2, "rmdir",
1581                                 "<filename>", CHECK_FS_RW))
1582                 return;
1583
1584         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1585         if (retval) {
1586                 com_err(argv[0], retval, "while trying to resolve filename");
1587                 return;
1588         }
1589
1590         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1591                 return;
1592
1593         if (!LINUX_S_ISDIR(inode.i_mode)) {
1594                 com_err(argv[0], 0, "file is not a directory");
1595                 return;
1596         }
1597
1598         rds.parent = 0;
1599         rds.empty = 1;
1600
1601         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1602                                     0, rmdir_proc, &rds);
1603         if (retval) {
1604                 com_err(argv[0], retval, "while iterating over directory");
1605                 return;
1606         }
1607         if (rds.empty == 0) {
1608                 com_err(argv[0], 0, "directory not empty");
1609                 return;
1610         }
1611
1612         inode.i_links_count = 0;
1613         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1614                 return;
1615
1616         unlink_file_by_name(argv[1]);
1617         kill_file_by_inode(inode_num);
1618
1619         if (rds.parent) {
1620                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1621                         return;
1622                 if (inode.i_links_count > 1)
1623                         inode.i_links_count--;
1624                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1625                         return;
1626         }
1627 }
1628
1629 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1630                             char *argv[] EXT2FS_ATTR((unused)))
1631 {
1632         FILE *out = stdout;
1633
1634         if (current_fs)
1635                 fprintf(out, "Open mode: read-%s\n",
1636                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1637         fprintf(out, "Filesystem in use: %s\n",
1638                 current_fs ? current_fs->device_name : "--none--");
1639 }
1640
1641 void do_expand_dir(int argc, char *argv[])
1642 {
1643         ext2_ino_t inode;
1644         int retval;
1645
1646         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1647                 return;
1648
1649         retval = ext2fs_expand_dir(current_fs, inode);
1650         if (retval)
1651                 com_err("ext2fs_expand_dir", retval, 0);
1652         return;
1653 }
1654
1655 void do_features(int argc, char *argv[])
1656 {
1657         int     i;
1658
1659         if (check_fs_open(argv[0]))
1660                 return;
1661
1662         if ((argc != 1) && check_fs_read_write(argv[0]))
1663                 return;
1664         for (i=1; i < argc; i++) {
1665                 if (e2p_edit_feature(argv[i],
1666                                      &current_fs->super->s_feature_compat, 0))
1667                         com_err(argv[0], 0, "Unknown feature: %s\n",
1668                                 argv[i]);
1669                 else
1670                         ext2fs_mark_super_dirty(current_fs);
1671         }
1672         print_features(current_fs->super, stdout);
1673 }
1674
1675 void do_bmap(int argc, char *argv[])
1676 {
1677         ext2_ino_t      ino;
1678         blk_t           blk, pblk;
1679         int             err;
1680         errcode_t       errcode;
1681
1682         if (common_args_process(argc, argv, 3, 3, argv[0],
1683                                 "<file> logical_blk", 0))
1684                 return;
1685
1686         ino = string_to_inode(argv[1]);
1687         if (!ino)
1688                 return;
1689         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1690
1691         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1692         if (errcode) {
1693                 com_err("argv[0]", errcode,
1694                         "while mapping logical block %u\n", blk);
1695                 return;
1696         }
1697         printf("%u\n", pblk);
1698 }
1699
1700 void do_imap(int argc, char *argv[])
1701 {
1702         ext2_ino_t      ino;
1703         unsigned long   group, block, block_nr, offset;
1704
1705         if (common_args_process(argc, argv, 2, 2, argv[0],
1706                                 "<file>", 0))
1707                 return;
1708         ino = string_to_inode(argv[1]);
1709         if (!ino)
1710                 return;
1711
1712         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1713         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1714                 EXT2_INODE_SIZE(current_fs->super);
1715         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1716         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1717                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1718                         group);
1719                 return;
1720         }
1721         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1722                 block;
1723         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1724
1725         printf("Inode %d is part of block group %lu\n"
1726                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1727                block_nr, offset);
1728
1729 }
1730
1731 void do_set_current_time(int argc, char *argv[])
1732 {
1733         time_t now;
1734
1735         if (common_args_process(argc, argv, 2, 2, argv[0],
1736                                 "<time>", 0))
1737                 return;
1738
1739         now = string_to_time(argv[1]);
1740         if (now == ((time_t) -1)) {
1741                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1742                         argv[1]);
1743                 return;
1744
1745         } else {
1746                 printf("Setting current time to %s\n", time_to_string(now));
1747                 current_fs->now = now;
1748         }
1749 }
1750
1751 static int source_file(const char *cmd_file, int sci_idx)
1752 {
1753         FILE            *f;
1754         char            buf[256];
1755         char            *cp;
1756         int             exit_status = 0;
1757         int             retval;
1758
1759         if (strcmp(cmd_file, "-") == 0)
1760                 f = stdin;
1761         else {
1762                 f = fopen(cmd_file, "r");
1763                 if (!f) {
1764                         perror(cmd_file);
1765                         exit(1);
1766                 }
1767         }
1768         setbuf(stdout, NULL);
1769         setbuf(stderr, NULL);
1770         while (!feof(f)) {
1771                 if (fgets(buf, sizeof(buf), f) == NULL)
1772                         break;
1773                 cp = strchr(buf, '\n');
1774                 if (cp)
1775                         *cp = 0;
1776                 cp = strchr(buf, '\r');
1777                 if (cp)
1778                         *cp = 0;
1779                 printf("debugfs: %s\n", buf);
1780                 retval = ss_execute_line(sci_idx, buf);
1781                 if (retval) {
1782                         ss_perror(sci_idx, retval, buf);
1783                         exit_status++;
1784                 }
1785         }
1786         return exit_status;
1787 }
1788
1789 int main(int argc, char **argv)
1790 {
1791         int             retval;
1792         int             sci_idx;
1793         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1794         int             c;
1795         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1796         char            *request = 0;
1797         int             exit_status = 0;
1798         char            *cmd_file = 0;
1799         blk_t           superblock = 0;
1800         blk_t           blocksize = 0;
1801         int             catastrophic = 0;
1802         char            *data_filename = 0;
1803
1804         add_error_table(&et_ext2_error_table);
1805         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1806                  E2FSPROGS_DATE);
1807
1808         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1809                 switch (c) {
1810                 case 'R':
1811                         request = optarg;
1812                         break;
1813                 case 'f':
1814                         cmd_file = optarg;
1815                         break;
1816                 case 'd':
1817                         data_filename = optarg;
1818                         break;
1819                 case 'i':
1820                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1821                         break;
1822                 case 'w':
1823                         open_flags |= EXT2_FLAG_RW;
1824                         break;
1825                 case 'b':
1826                         blocksize = parse_ulong(optarg, argv[0],
1827                                                 "block size", 0);
1828                         break;
1829                 case 's':
1830                         superblock = parse_ulong(optarg, argv[0],
1831                                                  "superblock number", 0);
1832                         break;
1833                 case 'c':
1834                         catastrophic = 1;
1835                         break;
1836                 case 'V':
1837                         /* Print version number and exit */
1838                         fprintf(stderr, "\tUsing %s\n",
1839                                 error_message(EXT2_ET_BASE));
1840                         exit(0);
1841                 default:
1842                         com_err(argv[0], 0, usage);
1843                         return 1;
1844                 }
1845         }
1846         if (optind < argc)
1847                 open_filesystem(argv[optind], open_flags,
1848                                 superblock, blocksize, catastrophic,
1849                                 data_filename);
1850
1851         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1852                                        &debug_cmds, &retval);
1853         if (retval) {
1854                 ss_perror(sci_idx, retval, "creating invocation");
1855                 exit(1);
1856         }
1857         ss_get_readline(sci_idx);
1858
1859         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1860         if (retval) {
1861                 ss_perror(sci_idx, retval, "adding standard requests");
1862                 exit (1);
1863         }
1864         if (request) {
1865                 retval = 0;
1866                 retval = ss_execute_line(sci_idx, request);
1867                 if (retval) {
1868                         ss_perror(sci_idx, retval, request);
1869                         exit_status++;
1870                 }
1871         } else if (cmd_file) {
1872                 exit_status = source_file(cmd_file, sci_idx);
1873         } else {
1874                 ss_listen(sci_idx);
1875         }
1876
1877         if (current_fs)
1878                 close_filesystem();
1879
1880         remove_error_table(&et_ext2_error_table);
1881         return exit_status;
1882 }