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", lb->first_bcnt, lb->first_block);
 382         else
 383                 fprintf(lb->f, "(%lld-%lld):%u-%u", lb->first_bcnt,
 384                         lb->last_bcnt, lb->first_block, lb->last_block);
 385         lb->first_block = 0;
 386 }
 387
 388 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 389                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 390                             blk_t ref_block EXT2FS_ATTR((unused)),
 391                             int ref_offset EXT2FS_ATTR((unused)),
 392                             void *private)
 393 {
 394         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 395
 396         lb->total++;
 397         if (blockcnt >= 0) {
 398                 /*
 399                  * See if we can add on to the existing range (if it exists)
 400                  */
 401                 if (lb->first_block &&
 402                     (lb->last_block+1 == *blocknr) &&
 403                     (lb->last_bcnt+1 == blockcnt)) {
 404                         lb->last_block = *blocknr;
 405                         lb->last_bcnt = blockcnt;
 406                         return 0;
 407                 }
 408                 /*
 409                  * Start a new range.
 410                  */
 411                 finish_range(lb);
 412                 lb->first_block = lb->last_block = *blocknr;
 413                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 414                 return 0;
 415         }
 416         /*
 417          * Not a normal block.  Always force a new range.
 418          */
 419         finish_range(lb);
 420         if (lb->first)
 421                 lb->first = 0;
 422         else
 423                 fprintf(lb->f, ", ");
 424         if (blockcnt == -1)
 425                 fprintf(lb->f, "(IND):%u", *blocknr);
 426         else if (blockcnt == -2)
 427                 fprintf(lb->f, "(DIND):%u", *blocknr);
 428         else if (blockcnt == -3)
 429                 fprintf(lb->f, "(TIND):%u", *blocknr);
 430         return 0;
 431 }
 432
 433 static void dump_xattr_string(FILE *out, const char *str, int len)
 434 {
 435         int printable = 1;
 436         int i;
 437
 438         /* check is string printable? */
 439         for (i = 0; i < len; i++)
 440                 if (!isprint(str[i])) {
 441                         printable = 0;
 442                         break;
 443                 }
 444
 445         for (i = 0; i < len; i++)
 446                 if (printable)
 447                         fprintf(out, "%c", (unsigned char)str[i]);
 448                 else
 449                         fprintf(out, "%02x ", (unsigned char)str[i]);
 450 }
 451
 452 static void internal_dump_inode_extra(FILE *out, const char *prefix,
 453                                       ext2_ino_t inode_num,
 454                                       struct ext2_inode_large *inode)
 455 {
 456         struct ext2_ext_attr_entry *entry;
 457         __u32 *magic;
 458         char *start, *end;
 459         unsigned int storage_size;
 460
 461         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 462         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 463                         EXT2_GOOD_OLD_INODE_SIZE) {
 464                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 465                                 inode->i_extra_isize);
 466                 return;
 467         }
 468         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 469                         EXT2_GOOD_OLD_INODE_SIZE -
 470                         inode->i_extra_isize;
 471         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 472                         inode->i_extra_isize);
 473         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 474                 fprintf(out, "Extended attributes stored in inode body: \n");
 475                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 476                 start = (char *) magic + sizeof(__u32);
 477                 entry = (struct ext2_ext_attr_entry *) start;
 478                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 479                         struct ext2_ext_attr_entry *next =
 480                                 EXT2_EXT_ATTR_NEXT(entry);
 481                         if (entry->e_value_size > storage_size ||
 482                                         (char *) next >= end) {
 483                                 fprintf(out, "invalid EA entry in inode\n");
 484                                 return;
 485                         }
 486                         fprintf(out, "  ");
 487                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 488                                           entry->e_name_len);
 489                         fprintf(out, " = \"");
 490                         dump_xattr_string(out, start + entry->e_value_offs,
 491                                                 entry->e_value_size);
 492                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 493                         entry = next;
 494                 }
 495         }
 496 }
 497
 498 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 499 {
 500         struct list_blocks_struct lb;
 501
 502         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 503         lb.total = 0;
 504         lb.first_block = 0;
 505         lb.f = f;
 506         lb.first = 1;
 507         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 508                              list_blocks_proc, (void *)&lb);
 509         finish_range(&lb);
 510         if (lb.total)
 511                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 512         fprintf(f,"\n");
 513 }
 514
 515
 516 void internal_dump_inode(FILE *out, const char *prefix,
 517                          ext2_ino_t inode_num, struct ext2_inode *inode,
 518                          int do_dump_blocks)
 519 {
 520         const char *i_type;
 521         char frag, fsize;
 522         int os = current_fs->super->s_creator_os;
 523
 524         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 525         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 526         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 527         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 528         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 529         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 530         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 531         else i_type = "bad type";
 532         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 533         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 534                 prefix,
 535                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 536         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 537                 prefix, inode->i_uid, inode->i_gid);
 538         if (LINUX_S_ISREG(inode->i_mode)) {
 539                 __u64 i_size = (inode->i_size |
 540                                 ((unsigned long long)inode->i_size_high << 32));
 541
 542                 fprintf(out, "%lld\n", i_size);
 543         } else
 544                 fprintf(out, "%d\n", inode->i_size);
 545         if (os == EXT2_OS_HURD)
 546                 fprintf(out,
 547                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 548                         prefix,
 549                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 550                         inode->osd1.hurd1.h_i_translator);
 551         else
 552                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 553                         prefix,
 554                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 555         if (os == EXT2_OS_LINUX)
 556                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 557                         prefix, inode->i_links_count,
 558                         (((unsigned long long)
 559                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 560                         inode->i_blocks);
 561         else
 562                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 563                         prefix, inode->i_links_count, inode->i_blocks);
 564         switch (os) {
 565             case EXT2_OS_HURD:
 566                 frag = inode->osd2.hurd2.h_i_frag;
 567                 fsize = inode->osd2.hurd2.h_i_fsize;
 568                 break;
 569             case EXT2_OS_MASIX:
 570                 frag = inode->osd2.masix2.m_i_frag;
 571                 fsize = inode->osd2.masix2.m_i_fsize;
 572                 break;
 573             default:
 574                 frag = fsize = 0;
 575         }
 576         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 577                 prefix, inode->i_faddr, frag, fsize);
 578         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 579                 time_to_string(inode->i_ctime));
 580         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 581                 time_to_string(inode->i_atime));
 582         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 583                 time_to_string(inode->i_mtime));
 584         if (inode->i_dtime)
 585           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 586                   time_to_string(inode->i_dtime));
 587         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 588                 internal_dump_inode_extra(out, prefix, inode_num,
 589                                           (struct ext2_inode_large *) inode);
 590         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 591                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 592                         (int) inode->i_size, (char *)inode->i_block);
 593         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 594                 int major, minor;
 595                 const char *devnote;
 596
 597                 if (inode->i_block[0]) {
 598                         major = (inode->i_block[0] >> 8) & 255;
 599                         minor = inode->i_block[0] & 255;
 600                         devnote = "";
 601                 } else {
 602                         major = (inode->i_block[1] & 0xfff00) >> 8;
 603                         minor = ((inode->i_block[1] & 0xff) |
 604                                  ((inode->i_block[1] >> 12) & 0xfff00));
 605                         devnote = "(New-style) ";
 606                 }
 607                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 608                         devnote, major, minor, major, minor);
 609         }
 610         else if (do_dump_blocks)
 611                 dump_blocks(out, prefix, inode_num);
 612 }
 613
 614 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 615 {
 616         FILE    *out;
 617
 618         out = open_pager();
 619         internal_dump_inode(out, "", inode_num, inode, 1);
 620         close_pager(out);
 621 }
 622
 623 void do_stat(int argc, char *argv[])
 624 {
 625         ext2_ino_t      inode;
 626         struct ext2_inode * inode_buf;
 627
 628         if (check_fs_open(argv[0]))
 629                 return;
 630
 631         inode_buf = (struct ext2_inode *)
 632                         malloc(EXT2_INODE_SIZE(current_fs->super));
 633         if (!inode_buf) {
 634                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 635                 return;
 636         }
 637
 638         if (common_inode_args_process(argc, argv, &inode, 0)) {
 639                 free(inode_buf);
 640                 return;
 641         }
 642
 643         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 644                                         EXT2_INODE_SIZE(current_fs->super))) {
 645                 free(inode_buf);
 646                 return;
 647         }
 648
 649         dump_inode(inode, inode_buf);
 650         free(inode_buf);
 651         return;
 652 }
 653
 654 void do_chroot(int argc, char *argv[])
 655 {
 656         ext2_ino_t inode;
 657         int retval;
 658
 659         if (common_inode_args_process(argc, argv, &inode, 0))
 660                 return;
 661
 662         retval = ext2fs_check_directory(current_fs, inode);
 663         if (retval)  {
 664                 com_err(argv[1], retval, 0);
 665                 return;
 666         }
 667         root = inode;
 668 }
 669
 670 void do_clri(int argc, char *argv[])
 671 {
 672         ext2_ino_t inode;
 673         struct ext2_inode inode_buf;
 674
 675         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 676                 return;
 677
 678         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 679                 return;
 680         memset(&inode_buf, 0, sizeof(inode_buf));
 681         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 682                 return;
 683 }
 684
 685 void do_freei(int argc, char *argv[])
 686 {
 687         ext2_ino_t inode;
 688
 689         if (common_inode_args_process(argc, argv, &inode,
 690                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 691                 return;
 692
 693         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 694                 com_err(argv[0], 0, "Warning: inode already clear");
 695         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 696         ext2fs_mark_ib_dirty(current_fs);
 697 }
 698
 699 void do_seti(int argc, char *argv[])
 700 {
 701         ext2_ino_t inode;
 702
 703         if (common_inode_args_process(argc, argv, &inode,
 704                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 705                 return;
 706
 707         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 708                 com_err(argv[0], 0, "Warning: inode already set");
 709         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 710         ext2fs_mark_ib_dirty(current_fs);
 711 }
 712
 713 void do_testi(int argc, char *argv[])
 714 {
 715         ext2_ino_t inode;
 716
 717         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 718                 return;
 719
 720         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 721                 printf("Inode %u is marked in use\n", inode);
 722         else
 723                 printf("Inode %u is not in use\n", inode);
 724 }
 725
 726 void do_freeb(int argc, char *argv[])
 727 {
 728         blk_t block;
 729         blk_t count = 1;
 730
 731         if (common_block_args_process(argc, argv, &block, &count))
 732                 return;
 733         if (check_fs_read_write(argv[0]))
 734                 return;
 735         while (count-- > 0) {
 736                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 737                         com_err(argv[0], 0, "Warning: block %u already clear",
 738                                 block);
 739                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 740                 block++;
 741         }
 742         ext2fs_mark_bb_dirty(current_fs);
 743 }
 744
 745 void do_setb(int argc, char *argv[])
 746 {
 747         blk_t block;
 748         blk_t count = 1;
 749
 750         if (common_block_args_process(argc, argv, &block, &count))
 751                 return;
 752         if (check_fs_read_write(argv[0]))
 753                 return;
 754         while (count-- > 0) {
 755                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 756                         com_err(argv[0], 0, "Warning: block %u already set",
 757                                 block);
 758                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 759                 block++;
 760         }
 761         ext2fs_mark_bb_dirty(current_fs);
 762 }
 763
 764 void do_testb(int argc, char *argv[])
 765 {
 766         blk_t block;
 767         blk_t count = 1;
 768
 769         if (common_block_args_process(argc, argv, &block, &count))
 770                 return;
 771         while (count-- > 0) {
 772                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 773                         printf("Block %u marked in use\n", block);
 774                 else
 775                         printf("Block %u not in use\n", block);
 776                 block++;
 777         }
 778 }
 779
 780 static void modify_u8(char *com, const char *prompt,
 781                       const char *format, __u8 *val)
 782 {
 783         char buf[200];
 784         unsigned long v;
 785         char *tmp;
 786
 787         sprintf(buf, format, *val);
 788         printf("%30s    [%s] ", prompt, buf);
 789         fgets(buf, sizeof(buf), stdin);
 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         fgets(buf, sizeof(buf), stdin);
 811         if (buf[strlen (buf) - 1] == '\n')
 812                 buf[strlen (buf) - 1] = '\0';
 813         if (!buf[0])
 814                 return;
 815         v = strtoul(buf, &tmp, 0);
 816         if (*tmp)
 817                 com_err(com, 0, "Bad value - %s", buf);
 818         else
 819                 *val = v;
 820 }
 821
 822 static void modify_u32(char *com, const char *prompt,
 823                        const char *format, __u32 *val)
 824 {
 825         char buf[200];
 826         unsigned long v;
 827         char *tmp;
 828
 829         sprintf(buf, format, *val);
 830         printf("%30s    [%s] ", prompt, buf);
 831         fgets(buf, sizeof(buf), stdin);
 832         if (buf[strlen (buf) - 1] == '\n')
 833                 buf[strlen (buf) - 1] = '\0';
 834         if (!buf[0])
 835                 return;
 836         v = strtoul(buf, &tmp, 0);
 837         if (*tmp)
 838                 com_err(com, 0, "Bad value - %s", buf);
 839         else
 840                 *val = v;
 841 }
 842
 843
 844 void do_modify_inode(int argc, char *argv[])
 845 {
 846         struct ext2_inode inode;
 847         ext2_ino_t      inode_num;
 848         int             i;
 849         unsigned char   *frag, *fsize;
 850         char            buf[80];
 851         int             os;
 852         const char      *hex_format = "0x%x";
 853         const char      *octal_format = "0%o";
 854         const char      *decimal_format = "%d";
 855         const char      *unsignedlong_format = "%lu";
 856
 857         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 858                 return;
 859
 860         os = current_fs->super->s_creator_os;
 861
 862         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 863                 return;
 864
 865         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 866         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 867         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 868         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 869         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 870         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 871         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 872         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 873         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 874         if (os == EXT2_OS_LINUX)
 875                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 876                            &inode.osd2.linux2.l_i_blocks_hi);
 877         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 878         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 879         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 880 #if 0
 881         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 882 #endif
 883         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 884         if (LINUX_S_ISDIR(inode.i_mode))
 885                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 886         else
 887                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 888
 889         if (os == EXT2_OS_HURD)
 890                 modify_u32(argv[0], "Translator Block",
 891                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 892
 893         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 894         switch (os) {
 895             case EXT2_OS_HURD:
 896                 frag = &inode.osd2.hurd2.h_i_frag;
 897                 fsize = &inode.osd2.hurd2.h_i_fsize;
 898                 break;
 899             case EXT2_OS_MASIX:
 900                 frag = &inode.osd2.masix2.m_i_frag;
 901                 fsize = &inode.osd2.masix2.m_i_fsize;
 902                 break;
 903             default:
 904                 frag = fsize = 0;
 905         }
 906         if (frag)
 907                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 908         if (fsize)
 909                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 910
 911         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 912                 sprintf(buf, "Direct Block #%d", i);
 913                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 914         }
 915         modify_u32(argv[0], "Indirect Block", decimal_format,
 916                     &inode.i_block[EXT2_IND_BLOCK]);
 917         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 918                     &inode.i_block[EXT2_DIND_BLOCK]);
 919         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 920                     &inode.i_block[EXT2_TIND_BLOCK]);
 921         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 922                 return;
 923 }
 924
 925 void do_change_working_dir(int argc, char *argv[])
 926 {
 927         ext2_ino_t      inode;
 928         int             retval;
 929
 930         if (common_inode_args_process(argc, argv, &inode, 0))
 931                 return;
 932
 933         retval = ext2fs_check_directory(current_fs, inode);
 934         if (retval) {
 935                 com_err(argv[1], retval, 0);
 936                 return;
 937         }
 938         cwd = inode;
 939         return;
 940 }
 941
 942 void do_print_working_directory(int argc, char *argv[])
 943 {
 944         int     retval;
 945         char    *pathname = NULL;
 946
 947         if (common_args_process(argc, argv, 1, 1,
 948                                 "print_working_directory", "", 0))
 949                 return;
 950
 951         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 952         if (retval) {
 953                 com_err(argv[0], retval,
 954                         "while trying to get pathname of cwd");
 955         }
 956         printf("[pwd]   INODE: %6u  PATH: %s\n",
 957                cwd, pathname ? pathname : "NULL");
 958         if (pathname) {
 959                 free(pathname);
 960                 pathname = NULL;
 961         }
 962         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 963         if (retval) {
 964                 com_err(argv[0], retval,
 965                         "while trying to get pathname of root");
 966         }
 967         printf("[root]  INODE: %6u  PATH: %s\n",
 968                root, pathname ? pathname : "NULL");
 969         if (pathname) {
 970                 free(pathname);
 971                 pathname = NULL;
 972         }
 973         return;
 974 }
 975
 976 /*
 977  * Given a mode, return the ext2 file type
 978  */
 979 static int ext2_file_type(unsigned int mode)
 980 {
 981         if (LINUX_S_ISREG(mode))
 982                 return EXT2_FT_REG_FILE;
 983
 984         if (LINUX_S_ISDIR(mode))
 985                 return EXT2_FT_DIR;
 986
 987         if (LINUX_S_ISCHR(mode))
 988                 return EXT2_FT_CHRDEV;
 989
 990         if (LINUX_S_ISBLK(mode))
 991                 return EXT2_FT_BLKDEV;
 992
 993         if (LINUX_S_ISLNK(mode))
 994                 return EXT2_FT_SYMLINK;
 995
 996         if (LINUX_S_ISFIFO(mode))
 997                 return EXT2_FT_FIFO;
 998
 999         if (LINUX_S_ISSOCK(mode))
1000                 return EXT2_FT_SOCK;
1001
1002         return 0;
1003 }
1004
1005 static void make_link(char *sourcename, char *destname)
1006 {
1007         ext2_ino_t      ino;
1008         struct ext2_inode inode;
1009         int             retval;
1010         ext2_ino_t      dir;
1011         char            *dest, *cp, *basename;
1012
1013         /*
1014          * Get the source inode
1015          */
1016         ino = string_to_inode(sourcename);
1017         if (!ino)
1018                 return;
1019         basename = strrchr(sourcename, '/');
1020         if (basename)
1021                 basename++;
1022         else
1023                 basename = sourcename;
1024         /*
1025          * Figure out the destination.  First see if it exists and is
1026          * a directory.
1027          */
1028         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1029                 dest = basename;
1030         else {
1031                 /*
1032                  * OK, it doesn't exist.  See if it is
1033                  * '<dir>/basename' or 'basename'
1034                  */
1035                 cp = strrchr(destname, '/');
1036                 if (cp) {
1037                         *cp = 0;
1038                         dir = string_to_inode(destname);
1039                         if (!dir)
1040                                 return;
1041                         dest = cp+1;
1042                 } else {
1043                         dir = cwd;
1044                         dest = destname;
1045                 }
1046         }
1047
1048         if (debugfs_read_inode(ino, &inode, sourcename))
1049                 return;
1050
1051         retval = ext2fs_link(current_fs, dir, dest, ino,
1052                              ext2_file_type(inode.i_mode));
1053         if (retval)
1054                 com_err("make_link", retval, 0);
1055         return;
1056 }
1057
1058
1059 void do_link(int argc, char *argv[])
1060 {
1061         if (common_args_process(argc, argv, 3, 3, "link",
1062                                 "<source file> <dest_name>", CHECK_FS_RW))
1063                 return;
1064
1065         make_link(argv[1], argv[2]);
1066 }
1067
1068 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1069                             int blockcnt EXT2FS_ATTR((unused)),
1070                             void *private EXT2FS_ATTR((unused)))
1071 {
1072         blk_t   block;
1073
1074         block = *blocknr;
1075         ext2fs_block_alloc_stats(fs, block, +1);
1076         return 0;
1077 }
1078
1079 void do_undel(int argc, char *argv[])
1080 {
1081         ext2_ino_t      ino;
1082         struct ext2_inode inode;
1083
1084         if (common_args_process(argc, argv, 3, 3, "undelete",
1085                                 "<inode_num> <dest_name>",
1086                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1087                 return;
1088
1089         ino = string_to_inode(argv[1]);
1090         if (!ino)
1091                 return;
1092
1093         if (debugfs_read_inode(ino, &inode, argv[1]))
1094                 return;
1095
1096         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1097                 com_err(argv[1], 0, "Inode is not marked as deleted");
1098                 return;
1099         }
1100
1101         /*
1102          * XXX this function doesn't handle changing the links count on the
1103          * parent directory when undeleting a directory.
1104          */
1105         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1106         inode.i_dtime = 0;
1107
1108         if (debugfs_write_inode(ino, &inode, argv[0]))
1109                 return;
1110
1111         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1112                              mark_blocks_proc, NULL);
1113
1114         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1115
1116         make_link(argv[1], argv[2]);
1117 }
1118
1119 static void unlink_file_by_name(char *filename)
1120 {
1121         int             retval;
1122         ext2_ino_t      dir;
1123         char            *basename;
1124
1125         basename = strrchr(filename, '/');
1126         if (basename) {
1127                 *basename++ = '\0';
1128                 dir = string_to_inode(filename);
1129                 if (!dir)
1130                         return;
1131         } else {
1132                 dir = cwd;
1133                 basename = filename;
1134         }
1135         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1136         if (retval)
1137                 com_err("unlink_file_by_name", retval, 0);
1138         return;
1139 }
1140
1141 void do_unlink(int argc, char *argv[])
1142 {
1143         if (common_args_process(argc, argv, 2, 2, "link",
1144                                 "<pathname>", CHECK_FS_RW))
1145                 return;
1146
1147         unlink_file_by_name(argv[1]);
1148 }
1149
1150 void do_find_free_block(int argc, char *argv[])
1151 {
1152         blk_t   free_blk, goal;
1153         int             count;
1154         errcode_t       retval;
1155         char            *tmp;
1156
1157         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1158                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1159                 return;
1160         }
1161         if (check_fs_open(argv[0]))
1162                 return;
1163
1164         if (argc > 1) {
1165                 count = strtol(argv[1],&tmp,0);
1166                 if (*tmp) {
1167                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1168                         return;
1169                 }
1170         } else
1171                 count = 1;
1172
1173         if (argc > 2) {
1174                 goal = strtol(argv[2], &tmp, 0);
1175                 if (*tmp) {
1176                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1177                         return;
1178                 }
1179         }
1180         else
1181                 goal = current_fs->super->s_first_data_block;
1182
1183         printf("Free blocks found: ");
1184         free_blk = goal - 1;
1185         while (count-- > 0) {
1186                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1187                                           &free_blk);
1188                 if (retval) {
1189                         com_err("ext2fs_new_block", retval, 0);
1190                         return;
1191                 } else
1192                         printf("%u ", free_blk);
1193         }
1194         printf("\n");
1195 }
1196
1197 void do_find_free_inode(int argc, char *argv[])
1198 {
1199         ext2_ino_t      free_inode, dir;
1200         int             mode;
1201         int             retval;
1202         char            *tmp;
1203
1204         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1205                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1206                 return;
1207         }
1208         if (check_fs_open(argv[0]))
1209                 return;
1210
1211         if (argc > 1) {
1212                 dir = strtol(argv[1], &tmp, 0);
1213                 if (*tmp) {
1214                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1215                         return;
1216                 }
1217         }
1218         else
1219                 dir = root;
1220         if (argc > 2) {
1221                 mode = strtol(argv[2], &tmp, 0);
1222                 if (*tmp) {
1223                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1224                         return;
1225                 }
1226         } else
1227                 mode = 010755;
1228
1229         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1230         if (retval)
1231                 com_err("ext2fs_new_inode", retval, 0);
1232         else
1233                 printf("Free inode found: %u\n", free_inode);
1234 }
1235
1236 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1237 {
1238         ext2_file_t     e2_file;
1239         errcode_t       retval;
1240         int             got;
1241         unsigned int    written;
1242         char            buf[8192];
1243         char            *ptr;
1244
1245         retval = ext2fs_file_open(current_fs, newfile,
1246                                   EXT2_FILE_WRITE, &e2_file);
1247         if (retval)
1248                 return retval;
1249
1250         while (1) {
1251                 got = read(fd, buf, sizeof(buf));
1252                 if (got == 0)
1253                         break;
1254                 if (got < 0) {
1255                         retval = errno;
1256                         goto fail;
1257                 }
1258                 ptr = buf;
1259                 while (got > 0) {
1260                         retval = ext2fs_file_write(e2_file, ptr,
1261                                                    got, &written);
1262                         if (retval)
1263                                 goto fail;
1264
1265                         got -= written;
1266                         ptr += written;
1267                 }
1268         }
1269         retval = ext2fs_file_close(e2_file);
1270         return retval;
1271
1272 fail:
1273         (void) ext2fs_file_close(e2_file);
1274         return retval;
1275 }
1276
1277
1278 void do_write(int argc, char *argv[])
1279 {
1280         int             fd;
1281         struct stat     statbuf;
1282         ext2_ino_t      newfile;
1283         errcode_t       retval;
1284         struct ext2_inode inode;
1285
1286         if (common_args_process(argc, argv, 3, 3, "write",
1287                                 "<native file> <new file>", CHECK_FS_RW))
1288                 return;
1289
1290         fd = open(argv[1], O_RDONLY);
1291         if (fd < 0) {
1292                 com_err(argv[1], errno, 0);
1293                 return;
1294         }
1295         if (fstat(fd, &statbuf) < 0) {
1296                 com_err(argv[1], errno, 0);
1297                 close(fd);
1298                 return;
1299         }
1300
1301         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1302         if (retval == 0) {
1303                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1304                 close(fd);
1305                 return;
1306         }
1307
1308         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1309         if (retval) {
1310                 com_err(argv[0], retval, 0);
1311                 close(fd);
1312                 return;
1313         }
1314         printf("Allocated inode: %u\n", newfile);
1315         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1316                              EXT2_FT_REG_FILE);
1317         if (retval == EXT2_ET_DIR_NO_SPACE) {
1318                 retval = ext2fs_expand_dir(current_fs, cwd);
1319                 if (retval) {
1320                         com_err(argv[0], retval, "while expanding directory");
1321                         return;
1322                 }
1323                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1324                                      EXT2_FT_REG_FILE);
1325         }
1326         if (retval) {
1327                 com_err(argv[2], retval, 0);
1328                 close(fd);
1329                 return;
1330         }
1331         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1332                 com_err(argv[0], 0, "Warning: inode already set");
1333         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1334         memset(&inode, 0, sizeof(inode));
1335         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1336         inode.i_atime = inode.i_ctime = inode.i_mtime =
1337                 current_fs->now ? current_fs->now : time(0);
1338         inode.i_links_count = 1;
1339         inode.i_size = statbuf.st_size;
1340         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1341                 close(fd);
1342                 return;
1343         }
1344         if (LINUX_S_ISREG(inode.i_mode)) {
1345                 retval = copy_file(fd, newfile);
1346                 if (retval)
1347                         com_err("copy_file", retval, 0);
1348         }
1349         close(fd);
1350 }
1351
1352 void do_mknod(int argc, char *argv[])
1353 {
1354         unsigned long   mode, major, minor;
1355         ext2_ino_t      newfile;
1356         errcode_t       retval;
1357         struct ext2_inode inode;
1358         int             filetype, nr;
1359
1360         if (check_fs_open(argv[0]))
1361                 return;
1362         if (argc < 3 || argv[2][1]) {
1363         usage:
1364                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1365                 return;
1366         }
1367         mode = minor = major = 0;
1368         switch (argv[2][0]) {
1369                 case 'p':
1370                         mode = LINUX_S_IFIFO;
1371                         filetype = EXT2_FT_FIFO;
1372                         nr = 3;
1373                         break;
1374                 case 'c':
1375                         mode = LINUX_S_IFCHR;
1376                         filetype = EXT2_FT_CHRDEV;
1377                         nr = 5;
1378                         break;
1379                 case 'b':
1380                         mode = LINUX_S_IFBLK;
1381                         filetype = EXT2_FT_BLKDEV;
1382                         nr = 5;
1383                         break;
1384                 default:
1385                         filetype = 0;
1386                         nr = 0;
1387         }
1388         if (nr == 5) {
1389                 major = strtoul(argv[3], argv+3, 0);
1390                 minor = strtoul(argv[4], argv+4, 0);
1391                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1392                         nr = 0;
1393         }
1394         if (argc != nr)
1395                 goto usage;
1396         if (check_fs_read_write(argv[0]))
1397                 return;
1398         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1399         if (retval) {
1400                 com_err(argv[0], retval, 0);
1401                 return;
1402         }
1403         printf("Allocated inode: %u\n", newfile);
1404         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1405         if (retval == EXT2_ET_DIR_NO_SPACE) {
1406                 retval = ext2fs_expand_dir(current_fs, cwd);
1407                 if (retval) {
1408                         com_err(argv[0], retval, "while expanding directory");
1409                         return;
1410                 }
1411                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1412                                      filetype);
1413         }
1414         if (retval) {
1415                 com_err(argv[1], retval, 0);
1416                 return;
1417         }
1418         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1419                 com_err(argv[0], 0, "Warning: inode already set");
1420         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1421         ext2fs_mark_ib_dirty(current_fs);
1422         memset(&inode, 0, sizeof(inode));
1423         inode.i_mode = mode;
1424         inode.i_atime = inode.i_ctime = inode.i_mtime =
1425                 current_fs->now ? current_fs->now : time(0);
1426         if ((major < 256) && (minor < 256)) {
1427                 inode.i_block[0] = major*256+minor;
1428                 inode.i_block[1] = 0;
1429         } else {
1430                 inode.i_block[0] = 0;
1431                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1432         }
1433         inode.i_links_count = 1;
1434         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1435                 return;
1436 }
1437
1438 void do_mkdir(int argc, char *argv[])
1439 {
1440         char    *cp;
1441         ext2_ino_t      parent;
1442         char    *name;
1443         errcode_t retval;
1444
1445         if (common_args_process(argc, argv, 2, 2, "mkdir",
1446                                 "<filename>", CHECK_FS_RW))
1447                 return;
1448
1449         cp = strrchr(argv[1], '/');
1450         if (cp) {
1451                 *cp = 0;
1452                 parent = string_to_inode(argv[1]);
1453                 if (!parent) {
1454                         com_err(argv[1], ENOENT, 0);
1455                         return;
1456                 }
1457                 name = cp+1;
1458         } else {
1459                 parent = cwd;
1460                 name = argv[1];
1461         }
1462
1463 try_again:
1464         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1465         if (retval == EXT2_ET_DIR_NO_SPACE) {
1466                 retval = ext2fs_expand_dir(current_fs, parent);
1467                 if (retval) {
1468                         com_err("argv[0]", retval, "while expanding directory");
1469                         return;
1470                 }
1471                 goto try_again;
1472         }
1473         if (retval) {
1474                 com_err("ext2fs_mkdir", retval, 0);
1475                 return;
1476         }
1477
1478 }
1479
1480 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1481                                int blockcnt EXT2FS_ATTR((unused)),
1482                                void *private EXT2FS_ATTR((unused)))
1483 {
1484         blk_t   block;
1485
1486         block = *blocknr;
1487         ext2fs_block_alloc_stats(fs, block, -1);
1488         return 0;
1489 }
1490
1491 static void kill_file_by_inode(ext2_ino_t inode)
1492 {
1493         struct ext2_inode inode_buf;
1494
1495         if (debugfs_read_inode(inode, &inode_buf, 0))
1496                 return;
1497         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1498         if (debugfs_write_inode(inode, &inode_buf, 0))
1499                 return;
1500         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1501                 return;
1502
1503         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1504                              release_blocks_proc, NULL);
1505         printf("\n");
1506         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1507                                   LINUX_S_ISDIR(inode_buf.i_mode));
1508 }
1509
1510
1511 void do_kill_file(int argc, char *argv[])
1512 {
1513         ext2_ino_t inode_num;
1514
1515         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1516                 return;
1517
1518         kill_file_by_inode(inode_num);
1519 }
1520
1521 void do_rm(int argc, char *argv[])
1522 {
1523         int retval;
1524         ext2_ino_t inode_num;
1525         struct ext2_inode inode;
1526
1527         if (common_args_process(argc, argv, 2, 2, "rm",
1528                                 "<filename>", CHECK_FS_RW))
1529                 return;
1530
1531         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1532         if (retval) {
1533                 com_err(argv[0], retval, "while trying to resolve filename");
1534                 return;
1535         }
1536
1537         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1538                 return;
1539
1540         if (LINUX_S_ISDIR(inode.i_mode)) {
1541                 com_err(argv[0], 0, "file is a directory");
1542                 return;
1543         }
1544
1545         --inode.i_links_count;
1546         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1547                 return;
1548
1549         unlink_file_by_name(argv[1]);
1550         if (inode.i_links_count == 0)
1551                 kill_file_by_inode(inode_num);
1552 }
1553
1554 struct rd_struct {
1555         ext2_ino_t      parent;
1556         int             empty;
1557 };
1558
1559 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1560                       int       entry EXT2FS_ATTR((unused)),
1561                       struct ext2_dir_entry *dirent,
1562                       int       offset EXT2FS_ATTR((unused)),
1563                       int       blocksize EXT2FS_ATTR((unused)),
1564                       char      *buf EXT2FS_ATTR((unused)),
1565                       void      *private)
1566 {
1567         struct rd_struct *rds = (struct rd_struct *) private;
1568
1569         if (dirent->inode == 0)
1570                 return 0;
1571         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1572                 return 0;
1573         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1574             (dirent->name[1] == '.')) {
1575                 rds->parent = dirent->inode;
1576                 return 0;
1577         }
1578         rds->empty = 0;
1579         return 0;
1580 }
1581
1582 void do_rmdir(int argc, char *argv[])
1583 {
1584         int retval;
1585         ext2_ino_t inode_num;
1586         struct ext2_inode inode;
1587         struct rd_struct rds;
1588
1589         if (common_args_process(argc, argv, 2, 2, "rmdir",
1590                                 "<filename>", CHECK_FS_RW))
1591                 return;
1592
1593         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1594         if (retval) {
1595                 com_err(argv[0], retval, "while trying to resolve filename");
1596                 return;
1597         }
1598
1599         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1600                 return;
1601
1602         if (!LINUX_S_ISDIR(inode.i_mode)) {
1603                 com_err(argv[0], 0, "file is not a directory");
1604                 return;
1605         }
1606
1607         rds.parent = 0;
1608         rds.empty = 1;
1609
1610         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1611                                     0, rmdir_proc, &rds);
1612         if (retval) {
1613                 com_err(argv[0], retval, "while iterating over directory");
1614                 return;
1615         }
1616         if (rds.empty == 0) {
1617                 com_err(argv[0], 0, "directory not empty");
1618                 return;
1619         }
1620
1621         inode.i_links_count = 0;
1622         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1623                 return;
1624
1625         unlink_file_by_name(argv[1]);
1626         kill_file_by_inode(inode_num);
1627
1628         if (rds.parent) {
1629                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1630                         return;
1631                 if (inode.i_links_count > 1)
1632                         inode.i_links_count--;
1633                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1634                         return;
1635         }
1636 }
1637
1638 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1639                             char *argv[] EXT2FS_ATTR((unused)))
1640 {
1641         FILE *out = stdout;
1642
1643         if (current_fs)
1644                 fprintf(out, "Open mode: read-%s\n",
1645                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1646         fprintf(out, "Filesystem in use: %s\n",
1647                 current_fs ? current_fs->device_name : "--none--");
1648 }
1649
1650 void do_expand_dir(int argc, char *argv[])
1651 {
1652         ext2_ino_t inode;
1653         int retval;
1654
1655         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1656                 return;
1657
1658         retval = ext2fs_expand_dir(current_fs, inode);
1659         if (retval)
1660                 com_err("ext2fs_expand_dir", retval, 0);
1661         return;
1662 }
1663
1664 void do_features(int argc, char *argv[])
1665 {
1666         int     i;
1667
1668         if (check_fs_open(argv[0]))
1669                 return;
1670
1671         if ((argc != 1) && check_fs_read_write(argv[0]))
1672                 return;
1673         for (i=1; i < argc; i++) {
1674                 if (e2p_edit_feature(argv[i],
1675                                      &current_fs->super->s_feature_compat, 0))
1676                         com_err(argv[0], 0, "Unknown feature: %s\n",
1677                                 argv[i]);
1678                 else
1679                         ext2fs_mark_super_dirty(current_fs);
1680         }
1681         print_features(current_fs->super, stdout);
1682 }
1683
1684 void do_bmap(int argc, char *argv[])
1685 {
1686         ext2_ino_t      ino;
1687         blk_t           blk, pblk;
1688         int             err;
1689         errcode_t       errcode;
1690
1691         if (common_args_process(argc, argv, 3, 3, argv[0],
1692                                 "<file> logical_blk", 0))
1693                 return;
1694
1695         ino = string_to_inode(argv[1]);
1696         if (!ino)
1697                 return;
1698         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1699
1700         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1701         if (errcode) {
1702                 com_err("argv[0]", errcode,
1703                         "while mapping logical block %u\n", blk);
1704                 return;
1705         }
1706         printf("%u\n", pblk);
1707 }
1708
1709 void do_imap(int argc, char *argv[])
1710 {
1711         ext2_ino_t      ino;
1712         unsigned long   group, block, block_nr, offset;
1713
1714         if (common_args_process(argc, argv, 2, 2, argv[0],
1715                                 "<file>", 0))
1716                 return;
1717         ino = string_to_inode(argv[1]);
1718         if (!ino)
1719                 return;
1720
1721         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1722         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1723                 EXT2_INODE_SIZE(current_fs->super);
1724         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1725         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1726                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1727                         group);
1728                 return;
1729         }
1730         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1731                 block;
1732         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1733
1734         printf("Inode %d is part of block group %lu\n"
1735                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1736                block_nr, offset);
1737
1738 }
1739
1740 void do_set_current_time(int argc, char *argv[])
1741 {
1742         time_t now;
1743
1744         if (common_args_process(argc, argv, 2, 2, argv[0],
1745                                 "<time>", 0))
1746                 return;
1747
1748         now = string_to_time(argv[1]);
1749         if (now == ((time_t) -1)) {
1750                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1751                         argv[1]);
1752                 return;
1753
1754         } else {
1755                 printf("Setting current time to %s\n", time_to_string(now));
1756                 current_fs->now = now;
1757         }
1758 }
1759
1760 static int source_file(const char *cmd_file, int sci_idx)
1761 {
1762         FILE            *f;
1763         char            buf[256];
1764         char            *cp;
1765         int             exit_status = 0;
1766         int             retval;
1767
1768         if (strcmp(cmd_file, "-") == 0)
1769                 f = stdin;
1770         else {
1771                 f = fopen(cmd_file, "r");
1772                 if (!f) {
1773                         perror(cmd_file);
1774                         exit(1);
1775                 }
1776         }
1777         setbuf(stdout, NULL);
1778         setbuf(stderr, NULL);
1779         while (!feof(f)) {
1780                 if (fgets(buf, sizeof(buf), f) == NULL)
1781                         break;
1782                 cp = strchr(buf, '\n');
1783                 if (cp)
1784                         *cp = 0;
1785                 cp = strchr(buf, '\r');
1786                 if (cp)
1787                         *cp = 0;
1788                 printf("debugfs: %s\n", buf);
1789                 retval = ss_execute_line(sci_idx, buf);
1790                 if (retval) {
1791                         ss_perror(sci_idx, retval, buf);
1792                         exit_status++;
1793                 }
1794         }
1795         return exit_status;
1796 }
1797
1798 int main(int argc, char **argv)
1799 {
1800         int             retval;
1801         int             sci_idx;
1802         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1803         int             c;
1804         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1805         char            *request = 0;
1806         int             exit_status = 0;
1807         char            *cmd_file = 0;
1808         blk_t           superblock = 0;
1809         blk_t           blocksize = 0;
1810         int             catastrophic = 0;
1811         char            *data_filename = 0;
1812
1813         add_error_table(&et_ext2_error_table);
1814         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1815                  E2FSPROGS_DATE);
1816
1817         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1818                 switch (c) {
1819                 case 'R':
1820                         request = optarg;
1821                         break;
1822                 case 'f':
1823                         cmd_file = optarg;
1824                         break;
1825                 case 'd':
1826                         data_filename = optarg;
1827                         break;
1828                 case 'i':
1829                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1830                         break;
1831                 case 'w':
1832                         open_flags |= EXT2_FLAG_RW;
1833                         break;
1834                 case 'b':
1835                         blocksize = parse_ulong(optarg, argv[0],
1836                                                 "block size", 0);
1837                         break;
1838                 case 's':
1839                         superblock = parse_ulong(optarg, argv[0],
1840                                                  "superblock number", 0);
1841                         break;
1842                 case 'c':
1843                         catastrophic = 1;
1844                         break;
1845                 case 'V':
1846                         /* Print version number and exit */
1847                         fprintf(stderr, "\tUsing %s\n",
1848                                 error_message(EXT2_ET_BASE));
1849                         exit(0);
1850                 default:
1851                         com_err(argv[0], 0, usage);
1852                         return 1;
1853                 }
1854         }
1855         if (optind < argc)
1856                 open_filesystem(argv[optind], open_flags,
1857                                 superblock, blocksize, catastrophic,
1858                                 data_filename);
1859
1860         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1861                                        &debug_cmds, &retval);
1862         if (retval) {
1863                 ss_perror(sci_idx, retval, "creating invocation");
1864                 exit(1);
1865         }
1866         ss_get_readline(sci_idx);
1867
1868         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1869         if (retval) {
1870                 ss_perror(sci_idx, retval, "adding standard requests");
1871                 exit (1);
1872         }
1873         if (request) {
1874                 retval = 0;
1875                 retval = ss_execute_line(sci_idx, request);
1876                 if (retval) {
1877                         ss_perror(sci_idx, retval, request);
1878                         exit_status++;
1879                 }
1880         } else if (cmd_file) {
1881                 exit_status = source_file(cmd_file, sci_idx);
1882         } else {
1883                 ss_listen(sci_idx);
1884         }
1885
1886         if (current_fs)
1887                 close_filesystem();
1888
1889         remove_error_table(&et_ext2_error_table);
1890         return exit_status;
1891 }