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 (argc != 2) {
 185                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 186                 return;
 187         }
 188
 189         if (chdir(argv[1]) == -1) {
 190                 com_err(argv[0], errno,
 191                         "while trying to change native directory to %s",
 192                         argv[1]);
 193                 return;
 194         }
 195 }
 196
 197 static void close_filesystem(NOARGS)
 198 {
 199         int     retval;
 200
 201         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 202                 retval = ext2fs_write_inode_bitmap(current_fs);
 203                 if (retval)
 204                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 205         }
 206         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 207                 retval = ext2fs_write_block_bitmap(current_fs);
 208                 if (retval)
 209                         com_err("ext2fs_write_block_bitmap", retval, 0);
 210         }
 211         retval = ext2fs_close(current_fs);
 212         if (retval)
 213                 com_err("ext2fs_close", retval, 0);
 214         current_fs = NULL;
 215         return;
 216 }
 217
 218 void do_close_filesys(int argc, char **argv)
 219 {
 220         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 221                 return;
 222         close_filesystem();
 223 }
 224
 225 void do_init_filesys(int argc, char **argv)
 226 {
 227         struct ext2_super_block param;
 228         errcode_t       retval;
 229         int             err;
 230
 231         if (common_args_process(argc, argv, 3, 3, "initialize",
 232                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 233                 return;
 234
 235         memset(&param, 0, sizeof(struct ext2_super_block));
 236         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 237                                            "blocks count", &err);
 238         if (err)
 239                 return;
 240         retval = ext2fs_initialize(argv[1], 0, &param,
 241                                    unix_io_manager, &current_fs);
 242         if (retval) {
 243                 com_err(argv[1], retval, "while initializing filesystem");
 244                 current_fs = NULL;
 245                 return;
 246         }
 247         root = cwd = EXT2_ROOT_INO;
 248         return;
 249 }
 250
 251 static void print_features(struct ext2_super_block * s, FILE *f)
 252 {
 253         int     i, j, printed=0;
 254         __u32   *mask = &s->s_feature_compat, m;
 255
 256         fputs("Filesystem features:", f);
 257         for (i=0; i <3; i++,mask++) {
 258                 for (j=0,m=1; j < 32; j++, m<<=1) {
 259                         if (*mask & m) {
 260                                 fprintf(f, " %s", e2p_feature2string(i, m));
 261                                 printed++;
 262                         }
 263                 }
 264         }
 265         if (printed == 0)
 266                 fputs("(none)", f);
 267         fputs("\n", f);
 268 }
 269
 270 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
 271                           const char *str, int *first, FILE *f)
 272 {
 273         if (gdp->bg_flags & mask) {
 274                 if (*first) {
 275                         fputs("           [", f);
 276                         *first = 0;
 277                 } else
 278                         fputs(", ", f);
 279                 fputs(str, f);
 280         }
 281 }
 282
 283 void do_show_super_stats(int argc, char *argv[])
 284 {
 285         dgrp_t  i;
 286         FILE    *out;
 287         struct ext2_group_desc *gdp;
 288         int     c, header_only = 0;
 289         int     numdirs = 0, first;
 290
 291         reset_getopt();
 292         while ((c = getopt (argc, argv, "h")) != EOF) {
 293                 switch (c) {
 294                 case 'h':
 295                         header_only++;
 296                         break;
 297                 default:
 298                         goto print_usage;
 299                 }
 300         }
 301         if (optind != argc) {
 302                 goto print_usage;
 303         }
 304         if (check_fs_open(argv[0]))
 305                 return;
 306         out = open_pager();
 307
 308         list_super2(current_fs->super, out);
 309         for (i=0; i < current_fs->group_desc_count; i++)
 310                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 311         fprintf(out, "Directories:              %d\n", numdirs);
 312
 313         if (header_only) {
 314                 close_pager(out);
 315                 return;
 316         }
 317
 318         gdp = &current_fs->group_desc[0];
 319         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 320                 fprintf(out, " Group %2d: block bitmap at %u, "
 321                         "inode bitmap at %u, "
 322                         "inode table at %u\n"
 323                         "           %d free %s, "
 324                         "%d free %s, "
 325                         "%d used %s\n",
 326                         i, gdp->bg_block_bitmap,
 327                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 328                         gdp->bg_free_blocks_count,
 329                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 330                         gdp->bg_free_inodes_count,
 331                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 332                         gdp->bg_used_dirs_count,
 333                         gdp->bg_used_dirs_count != 1 ? "directories"
 334                                 : "directory");
 335                 first = 1;
 336                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
 337                               &first, out);
 338                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
 339                               &first, out);
 340                 if (!first)
 341                         fputs("]\n", out);
 342         }
 343         close_pager(out);
 344         return;
 345 print_usage:
 346         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 347 }
 348
 349 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 350                       char **argv EXT2FS_ATTR((unused)))
 351 {
 352         if (check_fs_open(argv[0]))
 353                 return;
 354         if (check_fs_read_write(argv[0]))
 355                 return;
 356
 357         if (argv[1] && !strcmp(argv[1], "-clean"))
 358                 current_fs->super->s_state |= EXT2_VALID_FS;
 359         else
 360                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 361         ext2fs_mark_super_dirty(current_fs);
 362 }
 363
 364 struct list_blocks_struct {
 365         FILE            *f;
 366         e2_blkcnt_t     total;
 367         blk_t           first_block, last_block;
 368         e2_blkcnt_t     first_bcnt, last_bcnt;
 369         e2_blkcnt_t     first;
 370 };
 371
 372 static void finish_range(struct list_blocks_struct *lb)
 373 {
 374         if (lb->first_block == 0)
 375                 return;
 376         if (lb->first)
 377                 lb->first = 0;
 378         else
 379                 fprintf(lb->f, ", ");
 380         if (lb->first_block == lb->last_block)
 381                 fprintf(lb->f, "(%lld):%u",
 382                         (long long)lb->first_bcnt, lb->first_block);
 383         else
 384                 fprintf(lb->f, "(%lld-%lld):%u-%u",
 385                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 386                         lb->first_block, lb->last_block);
 387         lb->first_block = 0;
 388 }
 389
 390 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 391                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 392                             blk_t ref_block EXT2FS_ATTR((unused)),
 393                             int ref_offset EXT2FS_ATTR((unused)),
 394                             void *private)
 395 {
 396         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 397
 398         lb->total++;
 399         if (blockcnt >= 0) {
 400                 /*
 401                  * See if we can add on to the existing range (if it exists)
 402                  */
 403                 if (lb->first_block &&
 404                     (lb->last_block+1 == *blocknr) &&
 405                     (lb->last_bcnt+1 == blockcnt)) {
 406                         lb->last_block = *blocknr;
 407                         lb->last_bcnt = blockcnt;
 408                         return 0;
 409                 }
 410                 /*
 411                  * Start a new range.
 412                  */
 413                 finish_range(lb);
 414                 lb->first_block = lb->last_block = *blocknr;
 415                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 416                 return 0;
 417         }
 418         /*
 419          * Not a normal block.  Always force a new range.
 420          */
 421         finish_range(lb);
 422         if (lb->first)
 423                 lb->first = 0;
 424         else
 425                 fprintf(lb->f, ", ");
 426         if (blockcnt == -1)
 427                 fprintf(lb->f, "(IND):%u", *blocknr);
 428         else if (blockcnt == -2)
 429                 fprintf(lb->f, "(DIND):%u", *blocknr);
 430         else if (blockcnt == -3)
 431                 fprintf(lb->f, "(TIND):%u", *blocknr);
 432         return 0;
 433 }
 434
 435 static void dump_xattr_string(FILE *out, const char *str, int len)
 436 {
 437         int printable = 1;
 438         int i;
 439
 440         /* check is string printable? */
 441         for (i = 0; i < len; i++)
 442                 if (!isprint(str[i])) {
 443                         printable = 0;
 444                         break;
 445                 }
 446
 447         for (i = 0; i < len; i++)
 448                 if (printable)
 449                         fprintf(out, "%c", (unsigned char)str[i]);
 450                 else
 451                         fprintf(out, "%02x ", (unsigned char)str[i]);
 452 }
 453
 454 static void internal_dump_inode_extra(FILE *out,
 455                                       const char *prefix EXT2FS_ATTR((unused)),
 456                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 457                                       struct ext2_inode_large *inode)
 458 {
 459         struct ext2_ext_attr_entry *entry;
 460         __u32 *magic;
 461         char *start, *end;
 462         unsigned int storage_size;
 463
 464         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 465         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 466                         EXT2_GOOD_OLD_INODE_SIZE) {
 467                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 468                                 inode->i_extra_isize);
 469                 return;
 470         }
 471         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 472                         EXT2_GOOD_OLD_INODE_SIZE -
 473                         inode->i_extra_isize;
 474         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 475                         inode->i_extra_isize);
 476         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 477                 fprintf(out, "Extended attributes stored in inode body: \n");
 478                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 479                 start = (char *) magic + sizeof(__u32);
 480                 entry = (struct ext2_ext_attr_entry *) start;
 481                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 482                         struct ext2_ext_attr_entry *next =
 483                                 EXT2_EXT_ATTR_NEXT(entry);
 484                         if (entry->e_value_size > storage_size ||
 485                                         (char *) next >= end) {
 486                                 fprintf(out, "invalid EA entry in inode\n");
 487                                 return;
 488                         }
 489                         fprintf(out, "  ");
 490                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 491                                           entry->e_name_len);
 492                         fprintf(out, " = \"");
 493                         dump_xattr_string(out, start + entry->e_value_offs,
 494                                                 entry->e_value_size);
 495                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 496                         entry = next;
 497                 }
 498         }
 499 }
 500
 501 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 502 {
 503         struct list_blocks_struct lb;
 504
 505         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 506         lb.total = 0;
 507         lb.first_block = 0;
 508         lb.f = f;
 509         lb.first = 1;
 510         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 511                              list_blocks_proc, (void *)&lb);
 512         finish_range(&lb);
 513         if (lb.total)
 514                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 515         fprintf(f,"\n");
 516 }
 517
 518
 519 void internal_dump_inode(FILE *out, const char *prefix,
 520                          ext2_ino_t inode_num, struct ext2_inode *inode,
 521                          int do_dump_blocks)
 522 {
 523         const char *i_type;
 524         char frag, fsize;
 525         int os = current_fs->super->s_creator_os;
 526
 527         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 528         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 529         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 530         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 531         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 532         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 533         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 534         else i_type = "bad type";
 535         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 536         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 537                 prefix,
 538                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 539         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 540                 prefix, inode_uid(*inode), inode_gid(*inode));
 541         if (LINUX_S_ISREG(inode->i_mode)) {
 542                 unsigned long long i_size = (inode->i_size |
 543                                     ((unsigned long long)inode->i_size_high << 32));
 544
 545                 fprintf(out, "%llu\n", i_size);
 546         } else
 547                 fprintf(out, "%d\n", inode->i_size);
 548         if (os == EXT2_OS_HURD)
 549                 fprintf(out,
 550                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 551                         prefix,
 552                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 553                         inode->osd1.hurd1.h_i_translator);
 554         else
 555                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 556                         prefix,
 557                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 558         if (os == EXT2_OS_LINUX)
 559                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 560                         prefix, inode->i_links_count,
 561                         (((unsigned long long)
 562                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 563                         inode->i_blocks);
 564         else
 565                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 566                         prefix, inode->i_links_count, inode->i_blocks);
 567         switch (os) {
 568             case EXT2_OS_HURD:
 569                 frag = inode->osd2.hurd2.h_i_frag;
 570                 fsize = inode->osd2.hurd2.h_i_fsize;
 571                 break;
 572             case EXT2_OS_MASIX:
 573                 frag = inode->osd2.masix2.m_i_frag;
 574                 fsize = inode->osd2.masix2.m_i_fsize;
 575                 break;
 576             default:
 577                 frag = fsize = 0;
 578         }
 579         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 580                 prefix, inode->i_faddr, frag, fsize);
 581         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 582                 time_to_string(inode->i_ctime));
 583         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 584                 time_to_string(inode->i_atime));
 585         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 586                 time_to_string(inode->i_mtime));
 587         if (inode->i_dtime)
 588           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 589                   time_to_string(inode->i_dtime));
 590         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 591                 internal_dump_inode_extra(out, prefix, inode_num,
 592                                           (struct ext2_inode_large *) inode);
 593         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 594                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 595                         (int) inode->i_size, (char *)inode->i_block);
 596         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 597                 int major, minor;
 598                 const char *devnote;
 599
 600                 if (inode->i_block[0]) {
 601                         major = (inode->i_block[0] >> 8) & 255;
 602                         minor = inode->i_block[0] & 255;
 603                         devnote = "";
 604                 } else {
 605                         major = (inode->i_block[1] & 0xfff00) >> 8;
 606                         minor = ((inode->i_block[1] & 0xff) |
 607                                  ((inode->i_block[1] >> 12) & 0xfff00));
 608                         devnote = "(New-style) ";
 609                 }
 610                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 611                         devnote, major, minor, major, minor);
 612         }
 613         else if (do_dump_blocks)
 614                 dump_blocks(out, prefix, inode_num);
 615 }
 616
 617 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 618 {
 619         FILE    *out;
 620
 621         out = open_pager();
 622         internal_dump_inode(out, "", inode_num, inode, 1);
 623         close_pager(out);
 624 }
 625
 626 void do_stat(int argc, char *argv[])
 627 {
 628         ext2_ino_t      inode;
 629         struct ext2_inode * inode_buf;
 630
 631         if (check_fs_open(argv[0]))
 632                 return;
 633
 634         inode_buf = (struct ext2_inode *)
 635                         malloc(EXT2_INODE_SIZE(current_fs->super));
 636         if (!inode_buf) {
 637                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 638                 return;
 639         }
 640
 641         if (common_inode_args_process(argc, argv, &inode, 0)) {
 642                 free(inode_buf);
 643                 return;
 644         }
 645
 646         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 647                                         EXT2_INODE_SIZE(current_fs->super))) {
 648                 free(inode_buf);
 649                 return;
 650         }
 651
 652         dump_inode(inode, inode_buf);
 653         free(inode_buf);
 654         return;
 655 }
 656
 657 void do_chroot(int argc, char *argv[])
 658 {
 659         ext2_ino_t inode;
 660         int retval;
 661
 662         if (common_inode_args_process(argc, argv, &inode, 0))
 663                 return;
 664
 665         retval = ext2fs_check_directory(current_fs, inode);
 666         if (retval)  {
 667                 com_err(argv[1], retval, 0);
 668                 return;
 669         }
 670         root = inode;
 671 }
 672
 673 void do_clri(int argc, char *argv[])
 674 {
 675         ext2_ino_t inode;
 676         struct ext2_inode inode_buf;
 677
 678         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 679                 return;
 680
 681         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 682                 return;
 683         memset(&inode_buf, 0, sizeof(inode_buf));
 684         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 685                 return;
 686 }
 687
 688 void do_freei(int argc, char *argv[])
 689 {
 690         ext2_ino_t inode;
 691
 692         if (common_inode_args_process(argc, argv, &inode,
 693                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 694                 return;
 695
 696         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 697                 com_err(argv[0], 0, "Warning: inode already clear");
 698         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 699         ext2fs_mark_ib_dirty(current_fs);
 700 }
 701
 702 void do_seti(int argc, char *argv[])
 703 {
 704         ext2_ino_t inode;
 705
 706         if (common_inode_args_process(argc, argv, &inode,
 707                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 708                 return;
 709
 710         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 711                 com_err(argv[0], 0, "Warning: inode already set");
 712         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 713         ext2fs_mark_ib_dirty(current_fs);
 714 }
 715
 716 void do_testi(int argc, char *argv[])
 717 {
 718         ext2_ino_t inode;
 719
 720         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 721                 return;
 722
 723         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 724                 printf("Inode %u is marked in use\n", inode);
 725         else
 726                 printf("Inode %u is not in use\n", inode);
 727 }
 728
 729 void do_freeb(int argc, char *argv[])
 730 {
 731         blk_t block;
 732         blk_t count = 1;
 733
 734         if (common_block_args_process(argc, argv, &block, &count))
 735                 return;
 736         if (check_fs_read_write(argv[0]))
 737                 return;
 738         while (count-- > 0) {
 739                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 740                         com_err(argv[0], 0, "Warning: block %u already clear",
 741                                 block);
 742                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 743                 block++;
 744         }
 745         ext2fs_mark_bb_dirty(current_fs);
 746 }
 747
 748 void do_setb(int argc, char *argv[])
 749 {
 750         blk_t block;
 751         blk_t count = 1;
 752
 753         if (common_block_args_process(argc, argv, &block, &count))
 754                 return;
 755         if (check_fs_read_write(argv[0]))
 756                 return;
 757         while (count-- > 0) {
 758                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 759                         com_err(argv[0], 0, "Warning: block %u already set",
 760                                 block);
 761                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 762                 block++;
 763         }
 764         ext2fs_mark_bb_dirty(current_fs);
 765 }
 766
 767 void do_testb(int argc, char *argv[])
 768 {
 769         blk_t block;
 770         blk_t count = 1;
 771
 772         if (common_block_args_process(argc, argv, &block, &count))
 773                 return;
 774         while (count-- > 0) {
 775                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 776                         printf("Block %u marked in use\n", block);
 777                 else
 778                         printf("Block %u not in use\n", block);
 779                 block++;
 780         }
 781 }
 782
 783 static void modify_u8(char *com, const char *prompt,
 784                       const char *format, __u8 *val)
 785 {
 786         char buf[200];
 787         unsigned long v;
 788         char *tmp;
 789
 790         sprintf(buf, format, *val);
 791         printf("%30s    [%s] ", prompt, buf);
 792         fgets(buf, sizeof(buf), stdin);
 793         if (buf[strlen (buf) - 1] == '\n')
 794                 buf[strlen (buf) - 1] = '\0';
 795         if (!buf[0])
 796                 return;
 797         v = strtoul(buf, &tmp, 0);
 798         if (*tmp)
 799                 com_err(com, 0, "Bad value - %s", buf);
 800         else
 801                 *val = v;
 802 }
 803
 804 static void modify_u16(char *com, const char *prompt,
 805                        const char *format, __u16 *val)
 806 {
 807         char buf[200];
 808         unsigned long v;
 809         char *tmp;
 810
 811         sprintf(buf, format, *val);
 812         printf("%30s    [%s] ", prompt, buf);
 813         fgets(buf, sizeof(buf), stdin);
 814         if (buf[strlen (buf) - 1] == '\n')
 815                 buf[strlen (buf) - 1] = '\0';
 816         if (!buf[0])
 817                 return;
 818         v = strtoul(buf, &tmp, 0);
 819         if (*tmp)
 820                 com_err(com, 0, "Bad value - %s", buf);
 821         else
 822                 *val = v;
 823 }
 824
 825 static void modify_u32(char *com, const char *prompt,
 826                        const char *format, __u32 *val)
 827 {
 828         char buf[200];
 829         unsigned long v;
 830         char *tmp;
 831
 832         sprintf(buf, format, *val);
 833         printf("%30s    [%s] ", prompt, buf);
 834         fgets(buf, sizeof(buf), stdin);
 835         if (buf[strlen (buf) - 1] == '\n')
 836                 buf[strlen (buf) - 1] = '\0';
 837         if (!buf[0])
 838                 return;
 839         v = strtoul(buf, &tmp, 0);
 840         if (*tmp)
 841                 com_err(com, 0, "Bad value - %s", buf);
 842         else
 843                 *val = v;
 844 }
 845
 846
 847 void do_modify_inode(int argc, char *argv[])
 848 {
 849         struct ext2_inode inode;
 850         ext2_ino_t      inode_num;
 851         int             i;
 852         unsigned char   *frag, *fsize;
 853         char            buf[80];
 854         int             os;
 855         const char      *hex_format = "0x%x";
 856         const char      *octal_format = "0%o";
 857         const char      *decimal_format = "%d";
 858         const char      *unsignedlong_format = "%lu";
 859
 860         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 861                 return;
 862
 863         os = current_fs->super->s_creator_os;
 864
 865         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 866                 return;
 867
 868         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 869         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 870         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 871         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 872         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 873         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 874         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 875         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 876         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 877         if (os == EXT2_OS_LINUX)
 878                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 879                            &inode.osd2.linux2.l_i_blocks_hi);
 880         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 881         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 882         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 883 #if 0
 884         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 885 #endif
 886         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 887         if (LINUX_S_ISDIR(inode.i_mode))
 888                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 889         else
 890                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 891
 892         if (os == EXT2_OS_HURD)
 893                 modify_u32(argv[0], "Translator Block",
 894                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 895
 896         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 897         switch (os) {
 898             case EXT2_OS_HURD:
 899                 frag = &inode.osd2.hurd2.h_i_frag;
 900                 fsize = &inode.osd2.hurd2.h_i_fsize;
 901                 break;
 902             case EXT2_OS_MASIX:
 903                 frag = &inode.osd2.masix2.m_i_frag;
 904                 fsize = &inode.osd2.masix2.m_i_fsize;
 905                 break;
 906             default:
 907                 frag = fsize = 0;
 908         }
 909         if (frag)
 910                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 911         if (fsize)
 912                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 913
 914         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 915                 sprintf(buf, "Direct Block #%d", i);
 916                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 917         }
 918         modify_u32(argv[0], "Indirect Block", decimal_format,
 919                     &inode.i_block[EXT2_IND_BLOCK]);
 920         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 921                     &inode.i_block[EXT2_DIND_BLOCK]);
 922         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 923                     &inode.i_block[EXT2_TIND_BLOCK]);
 924         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 925                 return;
 926 }
 927
 928 void do_change_working_dir(int argc, char *argv[])
 929 {
 930         ext2_ino_t      inode;
 931         int             retval;
 932
 933         if (common_inode_args_process(argc, argv, &inode, 0))
 934                 return;
 935
 936         retval = ext2fs_check_directory(current_fs, inode);
 937         if (retval) {
 938                 com_err(argv[1], retval, 0);
 939                 return;
 940         }
 941         cwd = inode;
 942         return;
 943 }
 944
 945 void do_print_working_directory(int argc, char *argv[])
 946 {
 947         int     retval;
 948         char    *pathname = NULL;
 949
 950         if (common_args_process(argc, argv, 1, 1,
 951                                 "print_working_directory", "", 0))
 952                 return;
 953
 954         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 955         if (retval) {
 956                 com_err(argv[0], retval,
 957                         "while trying to get pathname of cwd");
 958         }
 959         printf("[pwd]   INODE: %6u  PATH: %s\n",
 960                cwd, pathname ? pathname : "NULL");
 961         if (pathname) {
 962                 free(pathname);
 963                 pathname = NULL;
 964         }
 965         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 966         if (retval) {
 967                 com_err(argv[0], retval,
 968                         "while trying to get pathname of root");
 969         }
 970         printf("[root]  INODE: %6u  PATH: %s\n",
 971                root, pathname ? pathname : "NULL");
 972         if (pathname) {
 973                 free(pathname);
 974                 pathname = NULL;
 975         }
 976         return;
 977 }
 978
 979 /*
 980  * Given a mode, return the ext2 file type
 981  */
 982 static int ext2_file_type(unsigned int mode)
 983 {
 984         if (LINUX_S_ISREG(mode))
 985                 return EXT2_FT_REG_FILE;
 986
 987         if (LINUX_S_ISDIR(mode))
 988                 return EXT2_FT_DIR;
 989
 990         if (LINUX_S_ISCHR(mode))
 991                 return EXT2_FT_CHRDEV;
 992
 993         if (LINUX_S_ISBLK(mode))
 994                 return EXT2_FT_BLKDEV;
 995
 996         if (LINUX_S_ISLNK(mode))
 997                 return EXT2_FT_SYMLINK;
 998
 999         if (LINUX_S_ISFIFO(mode))
1000                 return EXT2_FT_FIFO;
1001
1002         if (LINUX_S_ISSOCK(mode))
1003                 return EXT2_FT_SOCK;
1004
1005         return 0;
1006 }
1007
1008 static void make_link(char *sourcename, char *destname)
1009 {
1010         ext2_ino_t      ino;
1011         struct ext2_inode inode;
1012         int             retval;
1013         ext2_ino_t      dir;
1014         char            *dest, *cp, *basename;
1015
1016         /*
1017          * Get the source inode
1018          */
1019         ino = string_to_inode(sourcename);
1020         if (!ino)
1021                 return;
1022         basename = strrchr(sourcename, '/');
1023         if (basename)
1024                 basename++;
1025         else
1026                 basename = sourcename;
1027         /*
1028          * Figure out the destination.  First see if it exists and is
1029          * a directory.
1030          */
1031         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1032                 dest = basename;
1033         else {
1034                 /*
1035                  * OK, it doesn't exist.  See if it is
1036                  * '<dir>/basename' or 'basename'
1037                  */
1038                 cp = strrchr(destname, '/');
1039                 if (cp) {
1040                         *cp = 0;
1041                         dir = string_to_inode(destname);
1042                         if (!dir)
1043                                 return;
1044                         dest = cp+1;
1045                 } else {
1046                         dir = cwd;
1047                         dest = destname;
1048                 }
1049         }
1050
1051         if (debugfs_read_inode(ino, &inode, sourcename))
1052                 return;
1053
1054         retval = ext2fs_link(current_fs, dir, dest, ino,
1055                              ext2_file_type(inode.i_mode));
1056         if (retval)
1057                 com_err("make_link", retval, 0);
1058         return;
1059 }
1060
1061
1062 void do_link(int argc, char *argv[])
1063 {
1064         if (common_args_process(argc, argv, 3, 3, "link",
1065                                 "<source file> <dest_name>", CHECK_FS_RW))
1066                 return;
1067
1068         make_link(argv[1], argv[2]);
1069 }
1070
1071 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1072                             int blockcnt EXT2FS_ATTR((unused)),
1073                             void *private EXT2FS_ATTR((unused)))
1074 {
1075         blk_t   block;
1076
1077         block = *blocknr;
1078         ext2fs_block_alloc_stats(fs, block, +1);
1079         return 0;
1080 }
1081
1082 void do_undel(int argc, char *argv[])
1083 {
1084         ext2_ino_t      ino;
1085         struct ext2_inode inode;
1086
1087         if (common_args_process(argc, argv, 2, 3, "undelete",
1088                                 "<inode_num> [dest_name]",
1089                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1090                 return;
1091
1092         ino = string_to_inode(argv[1]);
1093         if (!ino)
1094                 return;
1095
1096         if (debugfs_read_inode(ino, &inode, argv[1]))
1097                 return;
1098
1099         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1100                 com_err(argv[1], 0, "Inode is not marked as deleted");
1101                 return;
1102         }
1103
1104         /*
1105          * XXX this function doesn't handle changing the links count on the
1106          * parent directory when undeleting a directory.
1107          */
1108         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1109         inode.i_dtime = 0;
1110
1111         if (debugfs_write_inode(ino, &inode, argv[0]))
1112                 return;
1113
1114         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1115                              mark_blocks_proc, NULL);
1116
1117         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1118
1119         if (argc > 2)
1120                 make_link(argv[1], argv[2]);
1121 }
1122
1123 static void unlink_file_by_name(char *filename)
1124 {
1125         int             retval;
1126         ext2_ino_t      dir;
1127         char            *basename;
1128
1129         basename = strrchr(filename, '/');
1130         if (basename) {
1131                 *basename++ = '\0';
1132                 dir = string_to_inode(filename);
1133                 if (!dir)
1134                         return;
1135         } else {
1136                 dir = cwd;
1137                 basename = filename;
1138         }
1139         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1140         if (retval)
1141                 com_err("unlink_file_by_name", retval, 0);
1142         return;
1143 }
1144
1145 void do_unlink(int argc, char *argv[])
1146 {
1147         if (common_args_process(argc, argv, 2, 2, "link",
1148                                 "<pathname>", CHECK_FS_RW))
1149                 return;
1150
1151         unlink_file_by_name(argv[1]);
1152 }
1153
1154 void do_find_free_block(int argc, char *argv[])
1155 {
1156         blk_t   free_blk, goal;
1157         int             count;
1158         errcode_t       retval;
1159         char            *tmp;
1160
1161         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1162                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1163                 return;
1164         }
1165         if (check_fs_open(argv[0]))
1166                 return;
1167
1168         if (argc > 1) {
1169                 count = strtol(argv[1],&tmp,0);
1170                 if (*tmp) {
1171                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1172                         return;
1173                 }
1174         } else
1175                 count = 1;
1176
1177         if (argc > 2) {
1178                 goal = strtol(argv[2], &tmp, 0);
1179                 if (*tmp) {
1180                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1181                         return;
1182                 }
1183         }
1184         else
1185                 goal = current_fs->super->s_first_data_block;
1186
1187         printf("Free blocks found: ");
1188         free_blk = goal - 1;
1189         while (count-- > 0) {
1190                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1191                                           &free_blk);
1192                 if (retval) {
1193                         com_err("ext2fs_new_block", retval, 0);
1194                         return;
1195                 } else
1196                         printf("%u ", free_blk);
1197         }
1198         printf("\n");
1199 }
1200
1201 void do_find_free_inode(int argc, char *argv[])
1202 {
1203         ext2_ino_t      free_inode, dir;
1204         int             mode;
1205         int             retval;
1206         char            *tmp;
1207
1208         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1209                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1210                 return;
1211         }
1212         if (check_fs_open(argv[0]))
1213                 return;
1214
1215         if (argc > 1) {
1216                 dir = strtol(argv[1], &tmp, 0);
1217                 if (*tmp) {
1218                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1219                         return;
1220                 }
1221         }
1222         else
1223                 dir = root;
1224         if (argc > 2) {
1225                 mode = strtol(argv[2], &tmp, 0);
1226                 if (*tmp) {
1227                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1228                         return;
1229                 }
1230         } else
1231                 mode = 010755;
1232
1233         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1234         if (retval)
1235                 com_err("ext2fs_new_inode", retval, 0);
1236         else
1237                 printf("Free inode found: %u\n", free_inode);
1238 }
1239
1240 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1241 {
1242         ext2_file_t     e2_file;
1243         errcode_t       retval;
1244         int             got;
1245         unsigned int    written;
1246         char            buf[8192];
1247         char            *ptr;
1248
1249         retval = ext2fs_file_open(current_fs, newfile,
1250                                   EXT2_FILE_WRITE, &e2_file);
1251         if (retval)
1252                 return retval;
1253
1254         while (1) {
1255                 got = read(fd, buf, sizeof(buf));
1256                 if (got == 0)
1257                         break;
1258                 if (got < 0) {
1259                         retval = errno;
1260                         goto fail;
1261                 }
1262                 ptr = buf;
1263                 while (got > 0) {
1264                         retval = ext2fs_file_write(e2_file, ptr,
1265                                                    got, &written);
1266                         if (retval)
1267                                 goto fail;
1268
1269                         got -= written;
1270                         ptr += written;
1271                 }
1272         }
1273         retval = ext2fs_file_close(e2_file);
1274         return retval;
1275
1276 fail:
1277         (void) ext2fs_file_close(e2_file);
1278         return retval;
1279 }
1280
1281
1282 void do_write(int argc, char *argv[])
1283 {
1284         int             fd;
1285         struct stat     statbuf;
1286         ext2_ino_t      newfile;
1287         errcode_t       retval;
1288         struct ext2_inode inode;
1289
1290         if (common_args_process(argc, argv, 3, 3, "write",
1291                                 "<native file> <new file>", CHECK_FS_RW))
1292                 return;
1293
1294         fd = open(argv[1], O_RDONLY);
1295         if (fd < 0) {
1296                 com_err(argv[1], errno, 0);
1297                 return;
1298         }
1299         if (fstat(fd, &statbuf) < 0) {
1300                 com_err(argv[1], errno, 0);
1301                 close(fd);
1302                 return;
1303         }
1304
1305         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1306         if (retval == 0) {
1307                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1308                 close(fd);
1309                 return;
1310         }
1311
1312         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1313         if (retval) {
1314                 com_err(argv[0], retval, 0);
1315                 close(fd);
1316                 return;
1317         }
1318         printf("Allocated inode: %u\n", newfile);
1319         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1320                              EXT2_FT_REG_FILE);
1321         if (retval == EXT2_ET_DIR_NO_SPACE) {
1322                 retval = ext2fs_expand_dir(current_fs, cwd);
1323                 if (retval) {
1324                         com_err(argv[0], retval, "while expanding directory");
1325                         return;
1326                 }
1327                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1328                                      EXT2_FT_REG_FILE);
1329         }
1330         if (retval) {
1331                 com_err(argv[2], retval, 0);
1332                 close(fd);
1333                 return;
1334         }
1335         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1336                 com_err(argv[0], 0, "Warning: inode already set");
1337         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1338         memset(&inode, 0, sizeof(inode));
1339         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1340         inode.i_atime = inode.i_ctime = inode.i_mtime =
1341                 current_fs->now ? current_fs->now : time(0);
1342         inode.i_links_count = 1;
1343         inode.i_size = statbuf.st_size;
1344         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1345                 close(fd);
1346                 return;
1347         }
1348         if (LINUX_S_ISREG(inode.i_mode)) {
1349                 retval = copy_file(fd, newfile);
1350                 if (retval)
1351                         com_err("copy_file", retval, 0);
1352         }
1353         close(fd);
1354 }
1355
1356 void do_mknod(int argc, char *argv[])
1357 {
1358         unsigned long   mode, major, minor;
1359         ext2_ino_t      newfile;
1360         errcode_t       retval;
1361         struct ext2_inode inode;
1362         int             filetype, nr;
1363
1364         if (check_fs_open(argv[0]))
1365                 return;
1366         if (argc < 3 || argv[2][1]) {
1367         usage:
1368                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1369                 return;
1370         }
1371         mode = minor = major = 0;
1372         switch (argv[2][0]) {
1373                 case 'p':
1374                         mode = LINUX_S_IFIFO;
1375                         filetype = EXT2_FT_FIFO;
1376                         nr = 3;
1377                         break;
1378                 case 'c':
1379                         mode = LINUX_S_IFCHR;
1380                         filetype = EXT2_FT_CHRDEV;
1381                         nr = 5;
1382                         break;
1383                 case 'b':
1384                         mode = LINUX_S_IFBLK;
1385                         filetype = EXT2_FT_BLKDEV;
1386                         nr = 5;
1387                         break;
1388                 default:
1389                         filetype = 0;
1390                         nr = 0;
1391         }
1392         if (nr == 5) {
1393                 major = strtoul(argv[3], argv+3, 0);
1394                 minor = strtoul(argv[4], argv+4, 0);
1395                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1396                         nr = 0;
1397         }
1398         if (argc != nr)
1399                 goto usage;
1400         if (check_fs_read_write(argv[0]))
1401                 return;
1402         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1403         if (retval) {
1404                 com_err(argv[0], retval, 0);
1405                 return;
1406         }
1407         printf("Allocated inode: %u\n", newfile);
1408         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1409         if (retval == EXT2_ET_DIR_NO_SPACE) {
1410                 retval = ext2fs_expand_dir(current_fs, cwd);
1411                 if (retval) {
1412                         com_err(argv[0], retval, "while expanding directory");
1413                         return;
1414                 }
1415                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1416                                      filetype);
1417         }
1418         if (retval) {
1419                 com_err(argv[1], retval, 0);
1420                 return;
1421         }
1422         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1423                 com_err(argv[0], 0, "Warning: inode already set");
1424         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1425         ext2fs_mark_ib_dirty(current_fs);
1426         memset(&inode, 0, sizeof(inode));
1427         inode.i_mode = mode;
1428         inode.i_atime = inode.i_ctime = inode.i_mtime =
1429                 current_fs->now ? current_fs->now : time(0);
1430         if ((major < 256) && (minor < 256)) {
1431                 inode.i_block[0] = major*256+minor;
1432                 inode.i_block[1] = 0;
1433         } else {
1434                 inode.i_block[0] = 0;
1435                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1436         }
1437         inode.i_links_count = 1;
1438         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1439                 return;
1440 }
1441
1442 void do_mkdir(int argc, char *argv[])
1443 {
1444         char    *cp;
1445         ext2_ino_t      parent;
1446         char    *name;
1447         errcode_t retval;
1448
1449         if (common_args_process(argc, argv, 2, 2, "mkdir",
1450                                 "<filename>", CHECK_FS_RW))
1451                 return;
1452
1453         cp = strrchr(argv[1], '/');
1454         if (cp) {
1455                 *cp = 0;
1456                 parent = string_to_inode(argv[1]);
1457                 if (!parent) {
1458                         com_err(argv[1], ENOENT, 0);
1459                         return;
1460                 }
1461                 name = cp+1;
1462         } else {
1463                 parent = cwd;
1464                 name = argv[1];
1465         }
1466
1467 try_again:
1468         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1469         if (retval == EXT2_ET_DIR_NO_SPACE) {
1470                 retval = ext2fs_expand_dir(current_fs, parent);
1471                 if (retval) {
1472                         com_err("argv[0]", retval, "while expanding directory");
1473                         return;
1474                 }
1475                 goto try_again;
1476         }
1477         if (retval) {
1478                 com_err("ext2fs_mkdir", retval, 0);
1479                 return;
1480         }
1481
1482 }
1483
1484 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1485                                int blockcnt EXT2FS_ATTR((unused)),
1486                                void *private EXT2FS_ATTR((unused)))
1487 {
1488         blk_t   block;
1489
1490         block = *blocknr;
1491         ext2fs_block_alloc_stats(fs, block, -1);
1492         return 0;
1493 }
1494
1495 static void kill_file_by_inode(ext2_ino_t inode)
1496 {
1497         struct ext2_inode inode_buf;
1498
1499         if (debugfs_read_inode(inode, &inode_buf, 0))
1500                 return;
1501         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1502         if (debugfs_write_inode(inode, &inode_buf, 0))
1503                 return;
1504         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1505                 return;
1506
1507         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1508                              release_blocks_proc, NULL);
1509         printf("\n");
1510         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1511                                   LINUX_S_ISDIR(inode_buf.i_mode));
1512 }
1513
1514
1515 void do_kill_file(int argc, char *argv[])
1516 {
1517         ext2_ino_t inode_num;
1518
1519         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1520                 return;
1521
1522         kill_file_by_inode(inode_num);
1523 }
1524
1525 void do_rm(int argc, char *argv[])
1526 {
1527         int retval;
1528         ext2_ino_t inode_num;
1529         struct ext2_inode inode;
1530
1531         if (common_args_process(argc, argv, 2, 2, "rm",
1532                                 "<filename>", CHECK_FS_RW))
1533                 return;
1534
1535         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1536         if (retval) {
1537                 com_err(argv[0], retval, "while trying to resolve filename");
1538                 return;
1539         }
1540
1541         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1542                 return;
1543
1544         if (LINUX_S_ISDIR(inode.i_mode)) {
1545                 com_err(argv[0], 0, "file is a directory");
1546                 return;
1547         }
1548
1549         --inode.i_links_count;
1550         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1551                 return;
1552
1553         unlink_file_by_name(argv[1]);
1554         if (inode.i_links_count == 0)
1555                 kill_file_by_inode(inode_num);
1556 }
1557
1558 struct rd_struct {
1559         ext2_ino_t      parent;
1560         int             empty;
1561 };
1562
1563 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1564                       int       entry EXT2FS_ATTR((unused)),
1565                       struct ext2_dir_entry *dirent,
1566                       int       offset EXT2FS_ATTR((unused)),
1567                       int       blocksize EXT2FS_ATTR((unused)),
1568                       char      *buf EXT2FS_ATTR((unused)),
1569                       void      *private)
1570 {
1571         struct rd_struct *rds = (struct rd_struct *) private;
1572
1573         if (dirent->inode == 0)
1574                 return 0;
1575         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1576                 return 0;
1577         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1578             (dirent->name[1] == '.')) {
1579                 rds->parent = dirent->inode;
1580                 return 0;
1581         }
1582         rds->empty = 0;
1583         return 0;
1584 }
1585
1586 void do_rmdir(int argc, char *argv[])
1587 {
1588         int retval;
1589         ext2_ino_t inode_num;
1590         struct ext2_inode inode;
1591         struct rd_struct rds;
1592
1593         if (common_args_process(argc, argv, 2, 2, "rmdir",
1594                                 "<filename>", CHECK_FS_RW))
1595                 return;
1596
1597         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1598         if (retval) {
1599                 com_err(argv[0], retval, "while trying to resolve filename");
1600                 return;
1601         }
1602
1603         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1604                 return;
1605
1606         if (!LINUX_S_ISDIR(inode.i_mode)) {
1607                 com_err(argv[0], 0, "file is not a directory");
1608                 return;
1609         }
1610
1611         rds.parent = 0;
1612         rds.empty = 1;
1613
1614         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1615                                     0, rmdir_proc, &rds);
1616         if (retval) {
1617                 com_err(argv[0], retval, "while iterating over directory");
1618                 return;
1619         }
1620         if (rds.empty == 0) {
1621                 com_err(argv[0], 0, "directory not empty");
1622                 return;
1623         }
1624
1625         inode.i_links_count = 0;
1626         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1627                 return;
1628
1629         unlink_file_by_name(argv[1]);
1630         kill_file_by_inode(inode_num);
1631
1632         if (rds.parent) {
1633                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1634                         return;
1635                 if (inode.i_links_count > 1)
1636                         inode.i_links_count--;
1637                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1638                         return;
1639         }
1640 }
1641
1642 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1643                             char *argv[] EXT2FS_ATTR((unused)))
1644 {
1645         FILE *out = stdout;
1646
1647         if (current_fs)
1648                 fprintf(out, "Open mode: read-%s\n",
1649                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1650         fprintf(out, "Filesystem in use: %s\n",
1651                 current_fs ? current_fs->device_name : "--none--");
1652 }
1653
1654 void do_expand_dir(int argc, char *argv[])
1655 {
1656         ext2_ino_t inode;
1657         int retval;
1658
1659         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1660                 return;
1661
1662         retval = ext2fs_expand_dir(current_fs, inode);
1663         if (retval)
1664                 com_err("ext2fs_expand_dir", retval, 0);
1665         return;
1666 }
1667
1668 void do_features(int argc, char *argv[])
1669 {
1670         int     i;
1671
1672         if (check_fs_open(argv[0]))
1673                 return;
1674
1675         if ((argc != 1) && check_fs_read_write(argv[0]))
1676                 return;
1677         for (i=1; i < argc; i++) {
1678                 if (e2p_edit_feature(argv[i],
1679                                      &current_fs->super->s_feature_compat, 0))
1680                         com_err(argv[0], 0, "Unknown feature: %s\n",
1681                                 argv[i]);
1682                 else
1683                         ext2fs_mark_super_dirty(current_fs);
1684         }
1685         print_features(current_fs->super, stdout);
1686 }
1687
1688 void do_bmap(int argc, char *argv[])
1689 {
1690         ext2_ino_t      ino;
1691         blk_t           blk, pblk;
1692         int             err;
1693         errcode_t       errcode;
1694
1695         if (common_args_process(argc, argv, 3, 3, argv[0],
1696                                 "<file> logical_blk", 0))
1697                 return;
1698
1699         ino = string_to_inode(argv[1]);
1700         if (!ino)
1701                 return;
1702         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1703
1704         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1705         if (errcode) {
1706                 com_err("argv[0]", errcode,
1707                         "while mapping logical block %u\n", blk);
1708                 return;
1709         }
1710         printf("%u\n", pblk);
1711 }
1712
1713 void do_imap(int argc, char *argv[])
1714 {
1715         ext2_ino_t      ino;
1716         unsigned long   group, block, block_nr, offset;
1717
1718         if (common_args_process(argc, argv, 2, 2, argv[0],
1719                                 "<file>", 0))
1720                 return;
1721         ino = string_to_inode(argv[1]);
1722         if (!ino)
1723                 return;
1724
1725         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1726         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1727                 EXT2_INODE_SIZE(current_fs->super);
1728         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1729         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1730                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1731                         group);
1732                 return;
1733         }
1734         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1735                 block;
1736         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1737
1738         printf("Inode %d is part of block group %lu\n"
1739                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1740                block_nr, offset);
1741
1742 }
1743
1744 void do_set_current_time(int argc, char *argv[])
1745 {
1746         time_t now;
1747
1748         if (common_args_process(argc, argv, 2, 2, argv[0],
1749                                 "<time>", 0))
1750                 return;
1751
1752         now = string_to_time(argv[1]);
1753         if (now == ((time_t) -1)) {
1754                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1755                         argv[1]);
1756                 return;
1757
1758         } else {
1759                 printf("Setting current time to %s\n", time_to_string(now));
1760                 current_fs->now = now;
1761         }
1762 }
1763
1764 static int source_file(const char *cmd_file, int sci_idx)
1765 {
1766         FILE            *f;
1767         char            buf[256];
1768         char            *cp;
1769         int             exit_status = 0;
1770         int             retval;
1771
1772         if (strcmp(cmd_file, "-") == 0)
1773                 f = stdin;
1774         else {
1775                 f = fopen(cmd_file, "r");
1776                 if (!f) {
1777                         perror(cmd_file);
1778                         exit(1);
1779                 }
1780         }
1781         setbuf(stdout, NULL);
1782         setbuf(stderr, NULL);
1783         while (!feof(f)) {
1784                 if (fgets(buf, sizeof(buf), f) == NULL)
1785                         break;
1786                 cp = strchr(buf, '\n');
1787                 if (cp)
1788                         *cp = 0;
1789                 cp = strchr(buf, '\r');
1790                 if (cp)
1791                         *cp = 0;
1792                 printf("debugfs: %s\n", buf);
1793                 retval = ss_execute_line(sci_idx, buf);
1794                 if (retval) {
1795                         ss_perror(sci_idx, retval, buf);
1796                         exit_status++;
1797                 }
1798         }
1799         return exit_status;
1800 }
1801
1802 int main(int argc, char **argv)
1803 {
1804         int             retval;
1805         int             sci_idx;
1806         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1807         int             c;
1808         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1809         char            *request = 0;
1810         int             exit_status = 0;
1811         char            *cmd_file = 0;
1812         blk_t           superblock = 0;
1813         blk_t           blocksize = 0;
1814         int             catastrophic = 0;
1815         char            *data_filename = 0;
1816
1817         add_error_table(&et_ext2_error_table);
1818         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1819                  E2FSPROGS_DATE);
1820
1821         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1822                 switch (c) {
1823                 case 'R':
1824                         request = optarg;
1825                         break;
1826                 case 'f':
1827                         cmd_file = optarg;
1828                         break;
1829                 case 'd':
1830                         data_filename = optarg;
1831                         break;
1832                 case 'i':
1833                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1834                         break;
1835                 case 'w':
1836                         open_flags |= EXT2_FLAG_RW;
1837                         break;
1838                 case 'b':
1839                         blocksize = parse_ulong(optarg, argv[0],
1840                                                 "block size", 0);
1841                         break;
1842                 case 's':
1843                         superblock = parse_ulong(optarg, argv[0],
1844                                                  "superblock number", 0);
1845                         break;
1846                 case 'c':
1847                         catastrophic = 1;
1848                         break;
1849                 case 'V':
1850                         /* Print version number and exit */
1851                         fprintf(stderr, "\tUsing %s\n",
1852                                 error_message(EXT2_ET_BASE));
1853                         exit(0);
1854                 default:
1855                         com_err(argv[0], 0, usage);
1856                         return 1;
1857                 }
1858         }
1859         if (optind < argc)
1860                 open_filesystem(argv[optind], open_flags,
1861                                 superblock, blocksize, catastrophic,
1862                                 data_filename);
1863
1864         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1865                                        &debug_cmds, &retval);
1866         if (retval) {
1867                 ss_perror(sci_idx, retval, "creating invocation");
1868                 exit(1);
1869         }
1870         ss_get_readline(sci_idx);
1871
1872         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1873         if (retval) {
1874                 ss_perror(sci_idx, retval, "adding standard requests");
1875                 exit (1);
1876         }
1877         if (request) {
1878                 retval = 0;
1879                 retval = ss_execute_line(sci_idx, request);
1880                 if (retval) {
1881                         ss_perror(sci_idx, retval, request);
1882                         exit_status++;
1883                 }
1884         } else if (cmd_file) {
1885                 exit_status = source_file(cmd_file, sci_idx);
1886         } else {
1887                 ss_listen(sci_idx);
1888         }
1889
1890         if (current_fs)
1891                 close_filesystem();
1892
1893         remove_error_table(&et_ext2_error_table);
1894         return exit_status;
1895 }