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             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         blk_t 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         blk_t 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         blk_t 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         if (!fgets(buf, sizeof(buf), stdin))
 789                 return;
 790         if (buf[strlen (buf) - 1] == '\n')
 791                 buf[strlen (buf) - 1] = '\0';
 792         if (!buf[0])
 793                 return;
 794         v = strtoul(buf, &tmp, 0);
 795         if (*tmp)
 796                 com_err(com, 0, "Bad value - %s", buf);
 797         else
 798                 *val = v;
 799 }
 800
 801 static void modify_u16(char *com, const char *prompt,
 802                        const char *format, __u16 *val)
 803 {
 804         char buf[200];
 805         unsigned long v;
 806         char *tmp;
 807
 808         sprintf(buf, format, *val);
 809         printf("%30s    [%s] ", prompt, buf);
 810         if (!fgets(buf, sizeof(buf), stdin))
 811                 return;
 812         if (buf[strlen (buf) - 1] == '\n')
 813                 buf[strlen (buf) - 1] = '\0';
 814         if (!buf[0])
 815                 return;
 816         v = strtoul(buf, &tmp, 0);
 817         if (*tmp)
 818                 com_err(com, 0, "Bad value - %s", buf);
 819         else
 820                 *val = v;
 821 }
 822
 823 static void modify_u32(char *com, const char *prompt,
 824                        const char *format, __u32 *val)
 825 {
 826         char buf[200];
 827         unsigned long v;
 828         char *tmp;
 829
 830         sprintf(buf, format, *val);
 831         printf("%30s    [%s] ", prompt, buf);
 832         if (!fgets(buf, sizeof(buf), stdin))
 833                 return;
 834         if (buf[strlen (buf) - 1] == '\n')
 835                 buf[strlen (buf) - 1] = '\0';
 836         if (!buf[0])
 837                 return;
 838         v = strtoul(buf, &tmp, 0);
 839         if (*tmp)
 840                 com_err(com, 0, "Bad value - %s", buf);
 841         else
 842                 *val = v;
 843 }
 844
 845
 846 void do_modify_inode(int argc, char *argv[])
 847 {
 848         struct ext2_inode inode;
 849         ext2_ino_t      inode_num;
 850         int             i;
 851         unsigned char   *frag, *fsize;
 852         char            buf[80];
 853         int             os;
 854         const char      *hex_format = "0x%x";
 855         const char      *octal_format = "0%o";
 856         const char      *decimal_format = "%d";
 857         const char      *unsignedlong_format = "%lu";
 858
 859         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 860                 return;
 861
 862         os = current_fs->super->s_creator_os;
 863
 864         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 865                 return;
 866
 867         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 868         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 869         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 870         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 871         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 872         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 873         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 874         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 875         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 876         if (os == EXT2_OS_LINUX)
 877                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 878                            &inode.osd2.linux2.l_i_blocks_hi);
 879         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 880         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 881         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 882 #if 0
 883         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 884 #endif
 885         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 886         if (LINUX_S_ISDIR(inode.i_mode))
 887                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 888         else
 889                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 890
 891         if (os == EXT2_OS_HURD)
 892                 modify_u32(argv[0], "Translator Block",
 893                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 894
 895         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 896         switch (os) {
 897             case EXT2_OS_HURD:
 898                 frag = &inode.osd2.hurd2.h_i_frag;
 899                 fsize = &inode.osd2.hurd2.h_i_fsize;
 900                 break;
 901             default:
 902                 frag = fsize = 0;
 903         }
 904         if (frag)
 905                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 906         if (fsize)
 907                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 908
 909         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 910                 sprintf(buf, "Direct Block #%d", i);
 911                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 912         }
 913         modify_u32(argv[0], "Indirect Block", decimal_format,
 914                     &inode.i_block[EXT2_IND_BLOCK]);
 915         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 916                     &inode.i_block[EXT2_DIND_BLOCK]);
 917         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 918                     &inode.i_block[EXT2_TIND_BLOCK]);
 919         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 920                 return;
 921 }
 922
 923 void do_change_working_dir(int argc, char *argv[])
 924 {
 925         ext2_ino_t      inode;
 926         int             retval;
 927
 928         if (common_inode_args_process(argc, argv, &inode, 0))
 929                 return;
 930
 931         retval = ext2fs_check_directory(current_fs, inode);
 932         if (retval) {
 933                 com_err(argv[1], retval, 0);
 934                 return;
 935         }
 936         cwd = inode;
 937         return;
 938 }
 939
 940 void do_print_working_directory(int argc, char *argv[])
 941 {
 942         int     retval;
 943         char    *pathname = NULL;
 944
 945         if (common_args_process(argc, argv, 1, 1,
 946                                 "print_working_directory", "", 0))
 947                 return;
 948
 949         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 950         if (retval) {
 951                 com_err(argv[0], retval,
 952                         "while trying to get pathname of cwd");
 953         }
 954         printf("[pwd]   INODE: %6u  PATH: %s\n",
 955                cwd, pathname ? pathname : "NULL");
 956         if (pathname) {
 957                 free(pathname);
 958                 pathname = NULL;
 959         }
 960         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 961         if (retval) {
 962                 com_err(argv[0], retval,
 963                         "while trying to get pathname of root");
 964         }
 965         printf("[root]  INODE: %6u  PATH: %s\n",
 966                root, pathname ? pathname : "NULL");
 967         if (pathname) {
 968                 free(pathname);
 969                 pathname = NULL;
 970         }
 971         return;
 972 }
 973
 974 /*
 975  * Given a mode, return the ext2 file type
 976  */
 977 static int ext2_file_type(unsigned int mode)
 978 {
 979         if (LINUX_S_ISREG(mode))
 980                 return EXT2_FT_REG_FILE;
 981
 982         if (LINUX_S_ISDIR(mode))
 983                 return EXT2_FT_DIR;
 984
 985         if (LINUX_S_ISCHR(mode))
 986                 return EXT2_FT_CHRDEV;
 987
 988         if (LINUX_S_ISBLK(mode))
 989                 return EXT2_FT_BLKDEV;
 990
 991         if (LINUX_S_ISLNK(mode))
 992                 return EXT2_FT_SYMLINK;
 993
 994         if (LINUX_S_ISFIFO(mode))
 995                 return EXT2_FT_FIFO;
 996
 997         if (LINUX_S_ISSOCK(mode))
 998                 return EXT2_FT_SOCK;
 999
1000         return 0;
1001 }
1002
1003 static void make_link(char *sourcename, char *destname)
1004 {
1005         ext2_ino_t      ino;
1006         struct ext2_inode inode;
1007         int             retval;
1008         ext2_ino_t      dir;
1009         char            *dest, *cp, *base_name;
1010
1011         /*
1012          * Get the source inode
1013          */
1014         ino = string_to_inode(sourcename);
1015         if (!ino)
1016                 return;
1017         base_name = strrchr(sourcename, '/');
1018         if (base_name)
1019                 base_name++;
1020         else
1021                 base_name = sourcename;
1022         /*
1023          * Figure out the destination.  First see if it exists and is
1024          * a directory.
1025          */
1026         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1027                 dest = base_name;
1028         else {
1029                 /*
1030                  * OK, it doesn't exist.  See if it is
1031                  * '<dir>/basename' or 'basename'
1032                  */
1033                 cp = strrchr(destname, '/');
1034                 if (cp) {
1035                         *cp = 0;
1036                         dir = string_to_inode(destname);
1037                         if (!dir)
1038                                 return;
1039                         dest = cp+1;
1040                 } else {
1041                         dir = cwd;
1042                         dest = destname;
1043                 }
1044         }
1045
1046         if (debugfs_read_inode(ino, &inode, sourcename))
1047                 return;
1048
1049         retval = ext2fs_link(current_fs, dir, dest, ino,
1050                              ext2_file_type(inode.i_mode));
1051         if (retval)
1052                 com_err("make_link", retval, 0);
1053         return;
1054 }
1055
1056
1057 void do_link(int argc, char *argv[])
1058 {
1059         if (common_args_process(argc, argv, 3, 3, "link",
1060                                 "<source file> <dest_name>", CHECK_FS_RW))
1061                 return;
1062
1063         make_link(argv[1], argv[2]);
1064 }
1065
1066 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1067                             int blockcnt EXT2FS_ATTR((unused)),
1068                             void *private EXT2FS_ATTR((unused)))
1069 {
1070         blk_t   block;
1071
1072         block = *blocknr;
1073         ext2fs_block_alloc_stats(fs, block, +1);
1074         return 0;
1075 }
1076
1077 void do_undel(int argc, char *argv[])
1078 {
1079         ext2_ino_t      ino;
1080         struct ext2_inode inode;
1081
1082         if (common_args_process(argc, argv, 3, 3, "undelete",
1083                                 "<inode_num> <dest_name>",
1084                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1085                 return;
1086
1087         ino = string_to_inode(argv[1]);
1088         if (!ino)
1089                 return;
1090
1091         if (debugfs_read_inode(ino, &inode, argv[1]))
1092                 return;
1093
1094         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1095                 com_err(argv[1], 0, "Inode is not marked as deleted");
1096                 return;
1097         }
1098
1099         /*
1100          * XXX this function doesn't handle changing the links count on the
1101          * parent directory when undeleting a directory.
1102          */
1103         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1104         inode.i_dtime = 0;
1105
1106         if (debugfs_write_inode(ino, &inode, argv[0]))
1107                 return;
1108
1109         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1110                              mark_blocks_proc, NULL);
1111
1112         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1113
1114         make_link(argv[1], argv[2]);
1115 }
1116
1117 static void unlink_file_by_name(char *filename)
1118 {
1119         int             retval;
1120         ext2_ino_t      dir;
1121         char            *base_name;
1122
1123         base_name = strrchr(filename, '/');
1124         if (base_name) {
1125                 *base_name++ = '\0';
1126                 dir = string_to_inode(filename);
1127                 if (!dir)
1128                         return;
1129         } else {
1130                 dir = cwd;
1131                 base_name = filename;
1132         }
1133         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1134         if (retval)
1135                 com_err("unlink_file_by_name", retval, 0);
1136         return;
1137 }
1138
1139 void do_unlink(int argc, char *argv[])
1140 {
1141         if (common_args_process(argc, argv, 2, 2, "link",
1142                                 "<pathname>", CHECK_FS_RW))
1143                 return;
1144
1145         unlink_file_by_name(argv[1]);
1146 }
1147
1148 void do_find_free_block(int argc, char *argv[])
1149 {
1150         blk_t   free_blk, goal;
1151         int             count;
1152         errcode_t       retval;
1153         char            *tmp;
1154
1155         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1156                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1157                 return;
1158         }
1159         if (check_fs_open(argv[0]))
1160                 return;
1161
1162         if (argc > 1) {
1163                 count = strtol(argv[1],&tmp,0);
1164                 if (*tmp) {
1165                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1166                         return;
1167                 }
1168         } else
1169                 count = 1;
1170
1171         if (argc > 2) {
1172                 goal = strtol(argv[2], &tmp, 0);
1173                 if (*tmp) {
1174                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1175                         return;
1176                 }
1177         }
1178         else
1179                 goal = current_fs->super->s_first_data_block;
1180
1181         printf("Free blocks found: ");
1182         free_blk = goal - 1;
1183         while (count-- > 0) {
1184                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1185                                           &free_blk);
1186                 if (retval) {
1187                         com_err("ext2fs_new_block", retval, 0);
1188                         return;
1189                 } else
1190                         printf("%u ", free_blk);
1191         }
1192         printf("\n");
1193 }
1194
1195 void do_find_free_inode(int argc, char *argv[])
1196 {
1197         ext2_ino_t      free_inode, dir;
1198         int             mode;
1199         int             retval;
1200         char            *tmp;
1201
1202         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1203                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1204                 return;
1205         }
1206         if (check_fs_open(argv[0]))
1207                 return;
1208
1209         if (argc > 1) {
1210                 dir = strtol(argv[1], &tmp, 0);
1211                 if (*tmp) {
1212                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1213                         return;
1214                 }
1215         }
1216         else
1217                 dir = root;
1218         if (argc > 2) {
1219                 mode = strtol(argv[2], &tmp, 0);
1220                 if (*tmp) {
1221                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1222                         return;
1223                 }
1224         } else
1225                 mode = 010755;
1226
1227         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1228         if (retval)
1229                 com_err("ext2fs_new_inode", retval, 0);
1230         else
1231                 printf("Free inode found: %u\n", free_inode);
1232 }
1233
1234 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1235 {
1236         ext2_file_t     e2_file;
1237         errcode_t       retval;
1238         int             got;
1239         unsigned int    written;
1240         char            buf[8192];
1241         char            *ptr;
1242
1243         retval = ext2fs_file_open(current_fs, newfile,
1244                                   EXT2_FILE_WRITE, &e2_file);
1245         if (retval)
1246                 return retval;
1247
1248         while (1) {
1249                 got = read(fd, buf, sizeof(buf));
1250                 if (got == 0)
1251                         break;
1252                 if (got < 0) {
1253                         retval = errno;
1254                         goto fail;
1255                 }
1256                 ptr = buf;
1257                 while (got > 0) {
1258                         retval = ext2fs_file_write(e2_file, ptr,
1259                                                    got, &written);
1260                         if (retval)
1261                                 goto fail;
1262
1263                         got -= written;
1264                         ptr += written;
1265                 }
1266         }
1267         retval = ext2fs_file_close(e2_file);
1268         return retval;
1269
1270 fail:
1271         (void) ext2fs_file_close(e2_file);
1272         return retval;
1273 }
1274
1275
1276 void do_write(int argc, char *argv[])
1277 {
1278         int             fd;
1279         struct stat     statbuf;
1280         ext2_ino_t      newfile;
1281         errcode_t       retval;
1282         struct ext2_inode inode;
1283
1284         if (common_args_process(argc, argv, 3, 3, "write",
1285                                 "<native file> <new file>", CHECK_FS_RW))
1286                 return;
1287
1288         fd = open(argv[1], O_RDONLY);
1289         if (fd < 0) {
1290                 com_err(argv[1], errno, 0);
1291                 return;
1292         }
1293         if (fstat(fd, &statbuf) < 0) {
1294                 com_err(argv[1], errno, 0);
1295                 close(fd);
1296                 return;
1297         }
1298
1299         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1300         if (retval == 0) {
1301                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1302                 close(fd);
1303                 return;
1304         }
1305
1306         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1307         if (retval) {
1308                 com_err(argv[0], retval, 0);
1309                 close(fd);
1310                 return;
1311         }
1312         printf("Allocated inode: %u\n", newfile);
1313         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1314                              EXT2_FT_REG_FILE);
1315         if (retval == EXT2_ET_DIR_NO_SPACE) {
1316                 retval = ext2fs_expand_dir(current_fs, cwd);
1317                 if (retval) {
1318                         com_err(argv[0], retval, "while expanding directory");
1319                         return;
1320                 }
1321                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1322                                      EXT2_FT_REG_FILE);
1323         }
1324         if (retval) {
1325                 com_err(argv[2], retval, 0);
1326                 close(fd);
1327                 return;
1328         }
1329         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1330                 com_err(argv[0], 0, "Warning: inode already set");
1331         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1332         memset(&inode, 0, sizeof(inode));
1333         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1334         inode.i_atime = inode.i_ctime = inode.i_mtime =
1335                 current_fs->now ? current_fs->now : time(0);
1336         inode.i_links_count = 1;
1337         inode.i_size = statbuf.st_size;
1338         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1339                 close(fd);
1340                 return;
1341         }
1342         if (LINUX_S_ISREG(inode.i_mode)) {
1343                 retval = copy_file(fd, newfile);
1344                 if (retval)
1345                         com_err("copy_file", retval, 0);
1346         }
1347         close(fd);
1348 }
1349
1350 void do_mknod(int argc, char *argv[])
1351 {
1352         unsigned long   mode, major, minor;
1353         ext2_ino_t      newfile;
1354         errcode_t       retval;
1355         struct ext2_inode inode;
1356         int             filetype, nr;
1357
1358         if (check_fs_open(argv[0]))
1359                 return;
1360         if (argc < 3 || argv[2][1]) {
1361         usage:
1362                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1363                 return;
1364         }
1365         mode = minor = major = 0;
1366         switch (argv[2][0]) {
1367                 case 'p':
1368                         mode = LINUX_S_IFIFO;
1369                         filetype = EXT2_FT_FIFO;
1370                         nr = 3;
1371                         break;
1372                 case 'c':
1373                         mode = LINUX_S_IFCHR;
1374                         filetype = EXT2_FT_CHRDEV;
1375                         nr = 5;
1376                         break;
1377                 case 'b':
1378                         mode = LINUX_S_IFBLK;
1379                         filetype = EXT2_FT_BLKDEV;
1380                         nr = 5;
1381                         break;
1382                 default:
1383                         filetype = 0;
1384                         nr = 0;
1385         }
1386         if (nr == 5) {
1387                 major = strtoul(argv[3], argv+3, 0);
1388                 minor = strtoul(argv[4], argv+4, 0);
1389                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1390                         nr = 0;
1391         }
1392         if (argc != nr)
1393                 goto usage;
1394         if (check_fs_read_write(argv[0]))
1395                 return;
1396         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1397         if (retval) {
1398                 com_err(argv[0], retval, 0);
1399                 return;
1400         }
1401         printf("Allocated inode: %u\n", newfile);
1402         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1403         if (retval == EXT2_ET_DIR_NO_SPACE) {
1404                 retval = ext2fs_expand_dir(current_fs, cwd);
1405                 if (retval) {
1406                         com_err(argv[0], retval, "while expanding directory");
1407                         return;
1408                 }
1409                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1410                                      filetype);
1411         }
1412         if (retval) {
1413                 com_err(argv[1], retval, 0);
1414                 return;
1415         }
1416         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1417                 com_err(argv[0], 0, "Warning: inode already set");
1418         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1419         ext2fs_mark_ib_dirty(current_fs);
1420         memset(&inode, 0, sizeof(inode));
1421         inode.i_mode = mode;
1422         inode.i_atime = inode.i_ctime = inode.i_mtime =
1423                 current_fs->now ? current_fs->now : time(0);
1424         if ((major < 256) && (minor < 256)) {
1425                 inode.i_block[0] = major*256+minor;
1426                 inode.i_block[1] = 0;
1427         } else {
1428                 inode.i_block[0] = 0;
1429                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1430         }
1431         inode.i_links_count = 1;
1432         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1433                 return;
1434 }
1435
1436 void do_mkdir(int argc, char *argv[])
1437 {
1438         char    *cp;
1439         ext2_ino_t      parent;
1440         char    *name;
1441         errcode_t retval;
1442
1443         if (common_args_process(argc, argv, 2, 2, "mkdir",
1444                                 "<filename>", CHECK_FS_RW))
1445                 return;
1446
1447         cp = strrchr(argv[1], '/');
1448         if (cp) {
1449                 *cp = 0;
1450                 parent = string_to_inode(argv[1]);
1451                 if (!parent) {
1452                         com_err(argv[1], ENOENT, 0);
1453                         return;
1454                 }
1455                 name = cp+1;
1456         } else {
1457                 parent = cwd;
1458                 name = argv[1];
1459         }
1460
1461 try_again:
1462         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1463         if (retval == EXT2_ET_DIR_NO_SPACE) {
1464                 retval = ext2fs_expand_dir(current_fs, parent);
1465                 if (retval) {
1466                         com_err("argv[0]", retval, "while expanding directory");
1467                         return;
1468                 }
1469                 goto try_again;
1470         }
1471         if (retval) {
1472                 com_err("ext2fs_mkdir", retval, 0);
1473                 return;
1474         }
1475
1476 }
1477
1478 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1479                                int blockcnt EXT2FS_ATTR((unused)),
1480                                void *private EXT2FS_ATTR((unused)))
1481 {
1482         blk_t   block;
1483
1484         block = *blocknr;
1485         ext2fs_block_alloc_stats(fs, block, -1);
1486         return 0;
1487 }
1488
1489 static void kill_file_by_inode(ext2_ino_t inode)
1490 {
1491         struct ext2_inode inode_buf;
1492
1493         if (debugfs_read_inode(inode, &inode_buf, 0))
1494                 return;
1495         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1496         if (debugfs_write_inode(inode, &inode_buf, 0))
1497                 return;
1498         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1499                 return;
1500
1501         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1502                              release_blocks_proc, NULL);
1503         printf("\n");
1504         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1505                                   LINUX_S_ISDIR(inode_buf.i_mode));
1506 }
1507
1508
1509 void do_kill_file(int argc, char *argv[])
1510 {
1511         ext2_ino_t inode_num;
1512
1513         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1514                 return;
1515
1516         kill_file_by_inode(inode_num);
1517 }
1518
1519 void do_rm(int argc, char *argv[])
1520 {
1521         int retval;
1522         ext2_ino_t inode_num;
1523         struct ext2_inode inode;
1524
1525         if (common_args_process(argc, argv, 2, 2, "rm",
1526                                 "<filename>", CHECK_FS_RW))
1527                 return;
1528
1529         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1530         if (retval) {
1531                 com_err(argv[0], retval, "while trying to resolve filename");
1532                 return;
1533         }
1534
1535         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1536                 return;
1537
1538         if (LINUX_S_ISDIR(inode.i_mode)) {
1539                 com_err(argv[0], 0, "file is a directory");
1540                 return;
1541         }
1542
1543         --inode.i_links_count;
1544         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1545                 return;
1546
1547         unlink_file_by_name(argv[1]);
1548         if (inode.i_links_count == 0)
1549                 kill_file_by_inode(inode_num);
1550 }
1551
1552 struct rd_struct {
1553         ext2_ino_t      parent;
1554         int             empty;
1555 };
1556
1557 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1558                       int       entry EXT2FS_ATTR((unused)),
1559                       struct ext2_dir_entry *dirent,
1560                       int       offset EXT2FS_ATTR((unused)),
1561                       int       blocksize EXT2FS_ATTR((unused)),
1562                       char      *buf EXT2FS_ATTR((unused)),
1563                       void      *private)
1564 {
1565         struct rd_struct *rds = (struct rd_struct *) private;
1566
1567         if (dirent->inode == 0)
1568                 return 0;
1569         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1570                 return 0;
1571         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1572             (dirent->name[1] == '.')) {
1573                 rds->parent = dirent->inode;
1574                 return 0;
1575         }
1576         rds->empty = 0;
1577         return 0;
1578 }
1579
1580 void do_rmdir(int argc, char *argv[])
1581 {
1582         int retval;
1583         ext2_ino_t inode_num;
1584         struct ext2_inode inode;
1585         struct rd_struct rds;
1586
1587         if (common_args_process(argc, argv, 2, 2, "rmdir",
1588                                 "<filename>", CHECK_FS_RW))
1589                 return;
1590
1591         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1592         if (retval) {
1593                 com_err(argv[0], retval, "while trying to resolve filename");
1594                 return;
1595         }
1596
1597         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1598                 return;
1599
1600         if (!LINUX_S_ISDIR(inode.i_mode)) {
1601                 com_err(argv[0], 0, "file is not a directory");
1602                 return;
1603         }
1604
1605         rds.parent = 0;
1606         rds.empty = 1;
1607
1608         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1609                                     0, rmdir_proc, &rds);
1610         if (retval) {
1611                 com_err(argv[0], retval, "while iterating over directory");
1612                 return;
1613         }
1614         if (rds.empty == 0) {
1615                 com_err(argv[0], 0, "directory not empty");
1616                 return;
1617         }
1618
1619         inode.i_links_count = 0;
1620         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1621                 return;
1622
1623         unlink_file_by_name(argv[1]);
1624         kill_file_by_inode(inode_num);
1625
1626         if (rds.parent) {
1627                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1628                         return;
1629                 if (inode.i_links_count > 1)
1630                         inode.i_links_count--;
1631                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1632                         return;
1633         }
1634 }
1635
1636 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1637                             char *argv[] EXT2FS_ATTR((unused)))
1638 {
1639         FILE *out = stdout;
1640
1641         if (current_fs)
1642                 fprintf(out, "Open mode: read-%s\n",
1643                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1644         fprintf(out, "Filesystem in use: %s\n",
1645                 current_fs ? current_fs->device_name : "--none--");
1646 }
1647
1648 void do_expand_dir(int argc, char *argv[])
1649 {
1650         ext2_ino_t inode;
1651         int retval;
1652
1653         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1654                 return;
1655
1656         retval = ext2fs_expand_dir(current_fs, inode);
1657         if (retval)
1658                 com_err("ext2fs_expand_dir", retval, 0);
1659         return;
1660 }
1661
1662 void do_features(int argc, char *argv[])
1663 {
1664         int     i;
1665
1666         if (check_fs_open(argv[0]))
1667                 return;
1668
1669         if ((argc != 1) && check_fs_read_write(argv[0]))
1670                 return;
1671         for (i=1; i < argc; i++) {
1672                 if (e2p_edit_feature(argv[i],
1673                                      &current_fs->super->s_feature_compat, 0))
1674                         com_err(argv[0], 0, "Unknown feature: %s\n",
1675                                 argv[i]);
1676                 else
1677                         ext2fs_mark_super_dirty(current_fs);
1678         }
1679         print_features(current_fs->super, stdout);
1680 }
1681
1682 void do_bmap(int argc, char *argv[])
1683 {
1684         ext2_ino_t      ino;
1685         blk_t           blk, pblk;
1686         int             err;
1687         errcode_t       errcode;
1688
1689         if (common_args_process(argc, argv, 3, 3, argv[0],
1690                                 "<file> logical_blk", 0))
1691                 return;
1692
1693         ino = string_to_inode(argv[1]);
1694         if (!ino)
1695                 return;
1696         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1697
1698         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1699         if (errcode) {
1700                 com_err("argv[0]", errcode,
1701                         "while mapping logical block %u\n", blk);
1702                 return;
1703         }
1704         printf("%u\n", pblk);
1705 }
1706
1707 void do_imap(int argc, char *argv[])
1708 {
1709         ext2_ino_t      ino;
1710         unsigned long   group, block, block_nr, offset;
1711
1712         if (common_args_process(argc, argv, 2, 2, argv[0],
1713                                 "<file>", 0))
1714                 return;
1715         ino = string_to_inode(argv[1]);
1716         if (!ino)
1717                 return;
1718
1719         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1720         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1721                 EXT2_INODE_SIZE(current_fs->super);
1722         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1723         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1724                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1725                         group);
1726                 return;
1727         }
1728         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1729                 block;
1730         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1731
1732         printf("Inode %d is part of block group %lu\n"
1733                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1734                block_nr, offset);
1735
1736 }
1737
1738 void do_set_current_time(int argc, char *argv[])
1739 {
1740         time_t now;
1741
1742         if (common_args_process(argc, argv, 2, 2, argv[0],
1743                                 "<time>", 0))
1744                 return;
1745
1746         now = string_to_time(argv[1]);
1747         if (now == ((time_t) -1)) {
1748                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1749                         argv[1]);
1750                 return;
1751
1752         } else {
1753                 printf("Setting current time to %s\n", time_to_string(now));
1754                 current_fs->now = now;
1755         }
1756 }
1757
1758 static int source_file(const char *cmd_file, int sci_idx)
1759 {
1760         FILE            *f;
1761         char            buf[256];
1762         char            *cp;
1763         int             exit_status = 0;
1764         int             retval;
1765
1766         if (strcmp(cmd_file, "-") == 0)
1767                 f = stdin;
1768         else {
1769                 f = fopen(cmd_file, "r");
1770                 if (!f) {
1771                         perror(cmd_file);
1772                         exit(1);
1773                 }
1774         }
1775         setbuf(stdout, NULL);
1776         setbuf(stderr, NULL);
1777         while (!feof(f)) {
1778                 if (fgets(buf, sizeof(buf), f) == NULL)
1779                         break;
1780                 cp = strchr(buf, '\n');
1781                 if (cp)
1782                         *cp = 0;
1783                 cp = strchr(buf, '\r');
1784                 if (cp)
1785                         *cp = 0;
1786                 printf("debugfs: %s\n", buf);
1787                 retval = ss_execute_line(sci_idx, buf);
1788                 if (retval) {
1789                         ss_perror(sci_idx, retval, buf);
1790                         exit_status++;
1791                 }
1792         }
1793         return exit_status;
1794 }
1795
1796 int main(int argc, char **argv)
1797 {
1798         int             retval;
1799         int             sci_idx;
1800         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1801         int             c;
1802         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1803         char            *request = 0;
1804         int             exit_status = 0;
1805         char            *cmd_file = 0;
1806         blk_t           superblock = 0;
1807         blk_t           blocksize = 0;
1808         int             catastrophic = 0;
1809         char            *data_filename = 0;
1810
1811         add_error_table(&et_ext2_error_table);
1812         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1813                  E2FSPROGS_DATE);
1814
1815         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1816                 switch (c) {
1817                 case 'R':
1818                         request = optarg;
1819                         break;
1820                 case 'f':
1821                         cmd_file = optarg;
1822                         break;
1823                 case 'd':
1824                         data_filename = optarg;
1825                         break;
1826                 case 'i':
1827                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1828                         break;
1829                 case 'w':
1830                         open_flags |= EXT2_FLAG_RW;
1831                         break;
1832                 case 'b':
1833                         blocksize = parse_ulong(optarg, argv[0],
1834                                                 "block size", 0);
1835                         break;
1836                 case 's':
1837                         superblock = parse_ulong(optarg, argv[0],
1838                                                  "superblock number", 0);
1839                         break;
1840                 case 'c':
1841                         catastrophic = 1;
1842                         break;
1843                 case 'V':
1844                         /* Print version number and exit */
1845                         fprintf(stderr, "\tUsing %s\n",
1846                                 error_message(EXT2_ET_BASE));
1847                         exit(0);
1848                 default:
1849                         com_err(argv[0], 0, usage);
1850                         return 1;
1851                 }
1852         }
1853         if (optind < argc)
1854                 open_filesystem(argv[optind], open_flags,
1855                                 superblock, blocksize, catastrophic,
1856                                 data_filename);
1857
1858         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1859                                        &debug_cmds, &retval);
1860         if (retval) {
1861                 ss_perror(sci_idx, retval, "creating invocation");
1862                 exit(1);
1863         }
1864         ss_get_readline(sci_idx);
1865
1866         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1867         if (retval) {
1868                 ss_perror(sci_idx, retval, "adding standard requests");
1869                 exit (1);
1870         }
1871         if (request) {
1872                 retval = 0;
1873                 retval = ss_execute_line(sci_idx, request);
1874                 if (retval) {
1875                         ss_perror(sci_idx, retval, request);
1876                         exit_status++;
1877                 }
1878         } else if (cmd_file) {
1879                 exit_status = source_file(cmd_file, sci_idx);
1880         } else {
1881                 ss_listen(sci_idx);
1882         }
1883
1884         if (current_fs)
1885                 close_filesystem();
1886
1887         remove_error_table(&et_ext2_error_table);
1888         return exit_status;
1889 }