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 ss_request_table *extra_cmds;
  42 char *debug_prog_name;
  43
  44 ext2_filsys     current_fs = NULL;
  45 ext2_ino_t      root, cwd;
  46
  47 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  48                             blk_t blocksize, int catastrophic,
  49                             char *data_filename)
  50 {
  51         int     retval;
  52         io_channel data_io = 0;
  53
  54         if (superblock != 0 && blocksize == 0) {
  55                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  56                 current_fs = NULL;
  57                 return;
  58         }
  59
  60         if (data_filename) {
  61                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  62                         com_err(device, 0,
  63                                 "The -d option is only valid when reading an e2image file");
  64                         current_fs = NULL;
  65                         return;
  66                 }
  67                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  68                 if (retval) {
  69                         com_err(data_filename, 0, "while opening data source");
  70                         current_fs = NULL;
  71                         return;
  72                 }
  73         }
  74
  75         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  76                 com_err(device, 0,
  77                         "opening read-only because of catastrophic mode");
  78                 open_flags &= ~EXT2_FLAG_RW;
  79         }
  80
  81         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  82                              unix_io_manager, &current_fs);
  83         if (retval) {
  84                 com_err(device, retval, "while opening filesystem");
  85                 current_fs = NULL;
  86                 return;
  87         }
  88
  89         if (catastrophic)
  90                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  91         else {
  92                 retval = ext2fs_read_inode_bitmap(current_fs);
  93                 if (retval) {
  94                         com_err(device, retval, "while reading inode bitmap");
  95                         goto errout;
  96                 }
  97                 retval = ext2fs_read_block_bitmap(current_fs);
  98                 if (retval) {
  99                         com_err(device, retval, "while reading block bitmap");
 100                         goto errout;
 101                 }
 102         }
 103
 104         if (data_io) {
 105                 retval = ext2fs_set_data_io(current_fs, data_io);
 106                 if (retval) {
 107                         com_err(device, retval,
 108                                 "while setting data source");
 109                         goto errout;
 110                 }
 111         }
 112
 113         root = cwd = EXT2_ROOT_INO;
 114         return;
 115
 116 errout:
 117         retval = ext2fs_close(current_fs);
 118         if (retval)
 119                 com_err(device, retval, "while trying to close filesystem");
 120         current_fs = NULL;
 121 }
 122
 123 void do_open_filesys(int argc, char **argv)
 124 {
 125         int     c, err;
 126         int     catastrophic = 0;
 127         blk_t   superblock = 0;
 128         blk_t   blocksize = 0;
 129         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
 130         char    *data_filename = 0;
 131
 132         reset_getopt();
 133         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
 134                 switch (c) {
 135                 case 'i':
 136                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 137                         break;
 138                 case 'w':
 139                         open_flags |= EXT2_FLAG_RW;
 140                         break;
 141                 case 'f':
 142                         open_flags |= EXT2_FLAG_FORCE;
 143                         break;
 144                 case 'e':
 145                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 146                         break;
 147                 case 'c':
 148                         catastrophic = 1;
 149                         break;
 150                 case 'd':
 151                         data_filename = optarg;
 152                         break;
 153                 case 'b':
 154                         blocksize = parse_ulong(optarg, argv[0],
 155                                                 "block size", &err);
 156                         if (err)
 157                                 return;
 158                         break;
 159                 case 's':
 160                         superblock = parse_ulong(optarg, argv[0],
 161                                                  "superblock number", &err);
 162                         if (err)
 163                                 return;
 164                         break;
 165                 default:
 166                         goto print_usage;
 167                 }
 168         }
 169         if (optind != argc-1) {
 170                 goto print_usage;
 171         }
 172         if (check_fs_not_open(argv[0]))
 173                 return;
 174         open_filesystem(argv[optind], open_flags,
 175                         superblock, blocksize, catastrophic,
 176                         data_filename);
 177         return;
 178
 179 print_usage:
 180         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 181                 "[-c] [-w] <device>\n", argv[0]);
 182 }
 183
 184 void do_lcd(int argc, char **argv)
 185 {
 186         if (argc != 2) {
 187                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 188                 return;
 189         }
 190
 191         if (chdir(argv[1]) == -1) {
 192                 com_err(argv[0], errno,
 193                         "while trying to change native directory to %s",
 194                         argv[1]);
 195                 return;
 196         }
 197 }
 198
 199 static void close_filesystem(NOARGS)
 200 {
 201         int     retval;
 202
 203         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 204                 retval = ext2fs_write_inode_bitmap(current_fs);
 205                 if (retval)
 206                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 207         }
 208         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 209                 retval = ext2fs_write_block_bitmap(current_fs);
 210                 if (retval)
 211                         com_err("ext2fs_write_block_bitmap", retval, 0);
 212         }
 213         retval = ext2fs_close(current_fs);
 214         if (retval)
 215                 com_err("ext2fs_close", retval, 0);
 216         current_fs = NULL;
 217         return;
 218 }
 219
 220 void do_close_filesys(int argc, char **argv)
 221 {
 222         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 223                 return;
 224         close_filesystem();
 225 }
 226
 227 void do_init_filesys(int argc, char **argv)
 228 {
 229         struct ext2_super_block param;
 230         errcode_t       retval;
 231         int             err;
 232
 233         if (common_args_process(argc, argv, 3, 3, "initialize",
 234                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 235                 return;
 236
 237         memset(&param, 0, sizeof(struct ext2_super_block));
 238         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 239                                            "blocks count", &err);
 240         if (err)
 241                 return;
 242         retval = ext2fs_initialize(argv[1], 0, &param,
 243                                    unix_io_manager, &current_fs);
 244         if (retval) {
 245                 com_err(argv[1], retval, "while initializing filesystem");
 246                 current_fs = NULL;
 247                 return;
 248         }
 249         root = cwd = EXT2_ROOT_INO;
 250         return;
 251 }
 252
 253 static void print_features(struct ext2_super_block * s, FILE *f)
 254 {
 255         int     i, j, printed=0;
 256         __u32   *mask = &s->s_feature_compat, m;
 257
 258         fputs("Filesystem features:", f);
 259         for (i=0; i <3; i++,mask++) {
 260                 for (j=0,m=1; j < 32; j++, m<<=1) {
 261                         if (*mask & m) {
 262                                 fprintf(f, " %s", e2p_feature2string(i, m));
 263                                 printed++;
 264                         }
 265                 }
 266         }
 267         if (printed == 0)
 268                 fputs("(none)", f);
 269         fputs("\n", f);
 270 }
 271
 272 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
 273                           const char *str, int *first, FILE *f)
 274 {
 275         if (gdp->bg_flags & mask) {
 276                 if (*first) {
 277                         fputs("           [", f);
 278                         *first = 0;
 279                 } else
 280                         fputs(", ", f);
 281                 fputs(str, f);
 282         }
 283 }
 284
 285 void do_show_super_stats(int argc, char *argv[])
 286 {
 287         dgrp_t  i;
 288         FILE    *out;
 289         struct ext2_group_desc *gdp;
 290         int     c, header_only = 0;
 291         int     numdirs = 0, first;
 292
 293         reset_getopt();
 294         while ((c = getopt (argc, argv, "h")) != EOF) {
 295                 switch (c) {
 296                 case 'h':
 297                         header_only++;
 298                         break;
 299                 default:
 300                         goto print_usage;
 301                 }
 302         }
 303         if (optind != argc) {
 304                 goto print_usage;
 305         }
 306         if (check_fs_open(argv[0]))
 307                 return;
 308         out = open_pager();
 309
 310         list_super2(current_fs->super, out);
 311         for (i=0; i < current_fs->group_desc_count; i++)
 312                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 313         fprintf(out, "Directories:              %d\n", numdirs);
 314
 315         if (header_only) {
 316                 close_pager(out);
 317                 return;
 318         }
 319
 320         gdp = &current_fs->group_desc[0];
 321         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 322                 fprintf(out, " Group %2d: block bitmap at %u, "
 323                         "inode bitmap at %u, "
 324                         "inode table at %u\n"
 325                         "           %d free %s, "
 326                         "%d free %s, "
 327                         "%d used %s\n",
 328                         i, gdp->bg_block_bitmap,
 329                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 330                         gdp->bg_free_blocks_count,
 331                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 332                         gdp->bg_free_inodes_count,
 333                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 334                         gdp->bg_used_dirs_count,
 335                         gdp->bg_used_dirs_count != 1 ? "directories"
 336                                 : "directory");
 337                 first = 1;
 338                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
 339                               &first, out);
 340                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
 341                               &first, out);
 342                 if (!first)
 343                         fputs("]\n", out);
 344         }
 345         close_pager(out);
 346         return;
 347 print_usage:
 348         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 349 }
 350
 351 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 352                       char **argv EXT2FS_ATTR((unused)))
 353 {
 354         if (check_fs_open(argv[0]))
 355                 return;
 356         if (check_fs_read_write(argv[0]))
 357                 return;
 358
 359         if (argv[1] && !strcmp(argv[1], "-clean"))
 360                 current_fs->super->s_state |= EXT2_VALID_FS;
 361         else
 362                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 363         ext2fs_mark_super_dirty(current_fs);
 364 }
 365
 366 struct list_blocks_struct {
 367         FILE            *f;
 368         e2_blkcnt_t     total;
 369         blk_t           first_block, last_block;
 370         e2_blkcnt_t     first_bcnt, last_bcnt;
 371         e2_blkcnt_t     first;
 372 };
 373
 374 static void finish_range(struct list_blocks_struct *lb)
 375 {
 376         if (lb->first_block == 0)
 377                 return;
 378         if (lb->first)
 379                 lb->first = 0;
 380         else
 381                 fprintf(lb->f, ", ");
 382         if (lb->first_block == lb->last_block)
 383                 fprintf(lb->f, "(%lld):%u",
 384                         (long long)lb->first_bcnt, lb->first_block);
 385         else
 386                 fprintf(lb->f, "(%lld-%lld):%u-%u",
 387                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 388                         lb->first_block, lb->last_block);
 389         lb->first_block = 0;
 390 }
 391
 392 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 393                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 394                             blk_t ref_block EXT2FS_ATTR((unused)),
 395                             int ref_offset EXT2FS_ATTR((unused)),
 396                             void *private)
 397 {
 398         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 399
 400         lb->total++;
 401         if (blockcnt >= 0) {
 402                 /*
 403                  * See if we can add on to the existing range (if it exists)
 404                  */
 405                 if (lb->first_block &&
 406                     (lb->last_block+1 == *blocknr) &&
 407                     (lb->last_bcnt+1 == blockcnt)) {
 408                         lb->last_block = *blocknr;
 409                         lb->last_bcnt = blockcnt;
 410                         return 0;
 411                 }
 412                 /*
 413                  * Start a new range.
 414                  */
 415                 finish_range(lb);
 416                 lb->first_block = lb->last_block = *blocknr;
 417                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 418                 return 0;
 419         }
 420         /*
 421          * Not a normal block.  Always force a new range.
 422          */
 423         finish_range(lb);
 424         if (lb->first)
 425                 lb->first = 0;
 426         else
 427                 fprintf(lb->f, ", ");
 428         if (blockcnt == -1)
 429                 fprintf(lb->f, "(IND):%u", *blocknr);
 430         else if (blockcnt == -2)
 431                 fprintf(lb->f, "(DIND):%u", *blocknr);
 432         else if (blockcnt == -3)
 433                 fprintf(lb->f, "(TIND):%u", *blocknr);
 434         return 0;
 435 }
 436
 437 static void dump_xattr_string(FILE *out, const char *str, int len)
 438 {
 439         int printable = 0;
 440         int i;
 441
 442         /* check: is string "printable enough?" */
 443         for (i = 0; i < len; i++)
 444                 if (isprint(str[i]))
 445                         printable++;
 446
 447         if (printable <= len*7/8)
 448                 printable = 0;
 449
 450         for (i = 0; i < len; i++)
 451                 if (printable)
 452                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 453                                 (unsigned char)str[i]);
 454                 else
 455                         fprintf(out, "%02x ", (unsigned char)str[i]);
 456 }
 457
 458 static void internal_dump_inode_extra(FILE *out,
 459                                       const char *prefix EXT2FS_ATTR((unused)),
 460                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 461                                       struct ext2_inode_large *inode)
 462 {
 463         struct ext2_ext_attr_entry *entry;
 464         __u32 *magic;
 465         char *start, *end;
 466         unsigned int storage_size;
 467
 468         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 469         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 470                         EXT2_GOOD_OLD_INODE_SIZE) {
 471                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 472                                 inode->i_extra_isize);
 473                 return;
 474         }
 475         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 476                         EXT2_GOOD_OLD_INODE_SIZE -
 477                         inode->i_extra_isize;
 478         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 479                         inode->i_extra_isize);
 480         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 481                 fprintf(out, "Extended attributes stored in inode body: \n");
 482                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 483                 start = (char *) magic + sizeof(__u32);
 484                 entry = (struct ext2_ext_attr_entry *) start;
 485                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 486                         struct ext2_ext_attr_entry *next =
 487                                 EXT2_EXT_ATTR_NEXT(entry);
 488                         if (entry->e_value_size > storage_size ||
 489                                         (char *) next >= end) {
 490                                 fprintf(out, "invalid EA entry in inode\n");
 491                                 return;
 492                         }
 493                         fprintf(out, "  ");
 494                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 495                                           entry->e_name_len);
 496                         fprintf(out, " = \"");
 497                         dump_xattr_string(out, start + entry->e_value_offs,
 498                                                 entry->e_value_size);
 499                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 500                         entry = next;
 501                 }
 502         }
 503 }
 504
 505 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 506 {
 507         struct list_blocks_struct lb;
 508
 509         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 510         lb.total = 0;
 511         lb.first_block = 0;
 512         lb.f = f;
 513         lb.first = 1;
 514         ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 515                              list_blocks_proc, (void *)&lb);
 516         finish_range(&lb);
 517         if (lb.total)
 518                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 519         fprintf(f,"\n");
 520 }
 521
 522
 523 void internal_dump_inode(FILE *out, const char *prefix,
 524                          ext2_ino_t inode_num, struct ext2_inode *inode,
 525                          int do_dump_blocks)
 526 {
 527         const char *i_type;
 528         char frag, fsize;
 529         int os = current_fs->super->s_creator_os;
 530
 531         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 532         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 533         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 534         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 535         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 536         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 537         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 538         else i_type = "bad type";
 539         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 540         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 541                 prefix,
 542                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 543         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 544                 prefix, inode_uid(*inode), inode_gid(*inode));
 545         if (LINUX_S_ISREG(inode->i_mode)) {
 546                 unsigned long long i_size = (inode->i_size |
 547                                     ((unsigned long long)inode->i_size_high << 32));
 548
 549                 fprintf(out, "%llu\n", i_size);
 550         } else
 551                 fprintf(out, "%d\n", inode->i_size);
 552         if (os == EXT2_OS_HURD)
 553                 fprintf(out,
 554                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 555                         prefix,
 556                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 557                         inode->osd1.hurd1.h_i_translator);
 558         else
 559                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 560                         prefix,
 561                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 562         if (os == EXT2_OS_LINUX)
 563                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 564                         prefix, inode->i_links_count,
 565                         (((unsigned long long)
 566                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 567                         inode->i_blocks);
 568         else
 569                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 570                         prefix, inode->i_links_count, inode->i_blocks);
 571         switch (os) {
 572             case EXT2_OS_HURD:
 573                 frag = inode->osd2.hurd2.h_i_frag;
 574                 fsize = inode->osd2.hurd2.h_i_fsize;
 575                 break;
 576             default:
 577                 frag = fsize = 0;
 578         }
 579         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 580                 prefix, inode->i_faddr, frag, fsize);
 581         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 582                 time_to_string(inode->i_ctime));
 583         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 584                 time_to_string(inode->i_atime));
 585         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 586                 time_to_string(inode->i_mtime));
 587         if (inode->i_dtime)
 588           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 589                   time_to_string(inode->i_dtime));
 590         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 591                 internal_dump_inode_extra(out, prefix, inode_num,
 592                                           (struct ext2_inode_large *) inode);
 593         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 594                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 595                         (int) inode->i_size, (char *)inode->i_block);
 596         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 597                 int major, minor;
 598                 const char *devnote;
 599
 600                 if (inode->i_block[0]) {
 601                         major = (inode->i_block[0] >> 8) & 255;
 602                         minor = inode->i_block[0] & 255;
 603                         devnote = "";
 604                 } else {
 605                         major = (inode->i_block[1] & 0xfff00) >> 8;
 606                         minor = ((inode->i_block[1] & 0xff) |
 607                                  ((inode->i_block[1] >> 12) & 0xfff00));
 608                         devnote = "(New-style) ";
 609                 }
 610                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 611                         devnote, major, minor, major, minor);
 612         }
 613         else if (do_dump_blocks)
 614                 dump_blocks(out, prefix, inode_num);
 615 }
 616
 617 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 618 {
 619         FILE    *out;
 620
 621         out = open_pager();
 622         internal_dump_inode(out, "", inode_num, inode, 1);
 623         close_pager(out);
 624 }
 625
 626 void do_stat(int argc, char *argv[])
 627 {
 628         ext2_ino_t      inode;
 629         struct ext2_inode * inode_buf;
 630
 631         if (check_fs_open(argv[0]))
 632                 return;
 633
 634         inode_buf = (struct ext2_inode *)
 635                         malloc(EXT2_INODE_SIZE(current_fs->super));
 636         if (!inode_buf) {
 637                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 638                 return;
 639         }
 640
 641         if (common_inode_args_process(argc, argv, &inode, 0)) {
 642                 free(inode_buf);
 643                 return;
 644         }
 645
 646         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 647                                         EXT2_INODE_SIZE(current_fs->super))) {
 648                 free(inode_buf);
 649                 return;
 650         }
 651
 652         dump_inode(inode, inode_buf);
 653         free(inode_buf);
 654         return;
 655 }
 656
 657 void do_chroot(int argc, char *argv[])
 658 {
 659         ext2_ino_t inode;
 660         int retval;
 661
 662         if (common_inode_args_process(argc, argv, &inode, 0))
 663                 return;
 664
 665         retval = ext2fs_check_directory(current_fs, inode);
 666         if (retval)  {
 667                 com_err(argv[1], retval, 0);
 668                 return;
 669         }
 670         root = inode;
 671 }
 672
 673 void do_clri(int argc, char *argv[])
 674 {
 675         ext2_ino_t inode;
 676         struct ext2_inode inode_buf;
 677
 678         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 679                 return;
 680
 681         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 682                 return;
 683         memset(&inode_buf, 0, sizeof(inode_buf));
 684         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 685                 return;
 686 }
 687
 688 void do_freei(int argc, char *argv[])
 689 {
 690         ext2_ino_t inode;
 691
 692         if (common_inode_args_process(argc, argv, &inode,
 693                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 694                 return;
 695
 696         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 697                 com_err(argv[0], 0, "Warning: inode already clear");
 698         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 699         ext2fs_mark_ib_dirty(current_fs);
 700 }
 701
 702 void do_seti(int argc, char *argv[])
 703 {
 704         ext2_ino_t inode;
 705
 706         if (common_inode_args_process(argc, argv, &inode,
 707                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 708                 return;
 709
 710         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 711                 com_err(argv[0], 0, "Warning: inode already set");
 712         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 713         ext2fs_mark_ib_dirty(current_fs);
 714 }
 715
 716 void do_testi(int argc, char *argv[])
 717 {
 718         ext2_ino_t inode;
 719
 720         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 721                 return;
 722
 723         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 724                 printf("Inode %u is marked in use\n", inode);
 725         else
 726                 printf("Inode %u is not in use\n", inode);
 727 }
 728
 729 void do_freeb(int argc, char *argv[])
 730 {
 731         blk_t block;
 732         blk_t count = 1;
 733
 734         if (common_block_args_process(argc, argv, &block, &count))
 735                 return;
 736         if (check_fs_read_write(argv[0]))
 737                 return;
 738         while (count-- > 0) {
 739                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 740                         com_err(argv[0], 0, "Warning: block %u already clear",
 741                                 block);
 742                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 743                 block++;
 744         }
 745         ext2fs_mark_bb_dirty(current_fs);
 746 }
 747
 748 void do_setb(int argc, char *argv[])
 749 {
 750         blk_t block;
 751         blk_t count = 1;
 752
 753         if (common_block_args_process(argc, argv, &block, &count))
 754                 return;
 755         if (check_fs_read_write(argv[0]))
 756                 return;
 757         while (count-- > 0) {
 758                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 759                         com_err(argv[0], 0, "Warning: block %u already set",
 760                                 block);
 761                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 762                 block++;
 763         }
 764         ext2fs_mark_bb_dirty(current_fs);
 765 }
 766
 767 void do_testb(int argc, char *argv[])
 768 {
 769         blk_t block;
 770         blk_t count = 1;
 771
 772         if (common_block_args_process(argc, argv, &block, &count))
 773                 return;
 774         while (count-- > 0) {
 775                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 776                         printf("Block %u marked in use\n", block);
 777                 else
 778                         printf("Block %u not in use\n", block);
 779                 block++;
 780         }
 781 }
 782
 783 static void modify_u8(char *com, const char *prompt,
 784                       const char *format, __u8 *val)
 785 {
 786         char buf[200];
 787         unsigned long v;
 788         char *tmp;
 789
 790         sprintf(buf, format, *val);
 791         printf("%30s    [%s] ", prompt, buf);
 792         if (!fgets(buf, sizeof(buf), stdin))
 793                 return;
 794         if (buf[strlen (buf) - 1] == '\n')
 795                 buf[strlen (buf) - 1] = '\0';
 796         if (!buf[0])
 797                 return;
 798         v = strtoul(buf, &tmp, 0);
 799         if (*tmp)
 800                 com_err(com, 0, "Bad value - %s", buf);
 801         else
 802                 *val = v;
 803 }
 804
 805 static void modify_u16(char *com, const char *prompt,
 806                        const char *format, __u16 *val)
 807 {
 808         char buf[200];
 809         unsigned long v;
 810         char *tmp;
 811
 812         sprintf(buf, format, *val);
 813         printf("%30s    [%s] ", prompt, buf);
 814         if (!fgets(buf, sizeof(buf), stdin))
 815                 return;
 816         if (buf[strlen (buf) - 1] == '\n')
 817                 buf[strlen (buf) - 1] = '\0';
 818         if (!buf[0])
 819                 return;
 820         v = strtoul(buf, &tmp, 0);
 821         if (*tmp)
 822                 com_err(com, 0, "Bad value - %s", buf);
 823         else
 824                 *val = v;
 825 }
 826
 827 static void modify_u32(char *com, const char *prompt,
 828                        const char *format, __u32 *val)
 829 {
 830         char buf[200];
 831         unsigned long v;
 832         char *tmp;
 833
 834         sprintf(buf, format, *val);
 835         printf("%30s    [%s] ", prompt, buf);
 836         if (!fgets(buf, sizeof(buf), stdin))
 837                 return;
 838         if (buf[strlen (buf) - 1] == '\n')
 839                 buf[strlen (buf) - 1] = '\0';
 840         if (!buf[0])
 841                 return;
 842         v = strtoul(buf, &tmp, 0);
 843         if (*tmp)
 844                 com_err(com, 0, "Bad value - %s", buf);
 845         else
 846                 *val = v;
 847 }
 848
 849
 850 void do_modify_inode(int argc, char *argv[])
 851 {
 852         struct ext2_inode inode;
 853         ext2_ino_t      inode_num;
 854         int             i;
 855         unsigned char   *frag, *fsize;
 856         char            buf[80];
 857         int             os;
 858         const char      *hex_format = "0x%x";
 859         const char      *octal_format = "0%o";
 860         const char      *decimal_format = "%d";
 861         const char      *unsignedlong_format = "%lu";
 862
 863         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 864                 return;
 865
 866         os = current_fs->super->s_creator_os;
 867
 868         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 869                 return;
 870
 871         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 872         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 873         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 874         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 875         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 876         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 877         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 878         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 879         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 880         if (os == EXT2_OS_LINUX)
 881                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 882                            &inode.osd2.linux2.l_i_blocks_hi);
 883         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 884         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 885         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 886 #if 0
 887         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 888 #endif
 889         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 890         if (LINUX_S_ISDIR(inode.i_mode))
 891                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 892         else
 893                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 894
 895         if (os == EXT2_OS_HURD)
 896                 modify_u32(argv[0], "Translator Block",
 897                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 898
 899         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 900         switch (os) {
 901             case EXT2_OS_HURD:
 902                 frag = &inode.osd2.hurd2.h_i_frag;
 903                 fsize = &inode.osd2.hurd2.h_i_fsize;
 904                 break;
 905             default:
 906                 frag = fsize = 0;
 907         }
 908         if (frag)
 909                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 910         if (fsize)
 911                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 912
 913         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 914                 sprintf(buf, "Direct Block #%d", i);
 915                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 916         }
 917         modify_u32(argv[0], "Indirect Block", decimal_format,
 918                     &inode.i_block[EXT2_IND_BLOCK]);
 919         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 920                     &inode.i_block[EXT2_DIND_BLOCK]);
 921         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 922                     &inode.i_block[EXT2_TIND_BLOCK]);
 923         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 924                 return;
 925 }
 926
 927 void do_change_working_dir(int argc, char *argv[])
 928 {
 929         ext2_ino_t      inode;
 930         int             retval;
 931
 932         if (common_inode_args_process(argc, argv, &inode, 0))
 933                 return;
 934
 935         retval = ext2fs_check_directory(current_fs, inode);
 936         if (retval) {
 937                 com_err(argv[1], retval, 0);
 938                 return;
 939         }
 940         cwd = inode;
 941         return;
 942 }
 943
 944 void do_print_working_directory(int argc, char *argv[])
 945 {
 946         int     retval;
 947         char    *pathname = NULL;
 948
 949         if (common_args_process(argc, argv, 1, 1,
 950                                 "print_working_directory", "", 0))
 951                 return;
 952
 953         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 954         if (retval) {
 955                 com_err(argv[0], retval,
 956                         "while trying to get pathname of cwd");
 957         }
 958         printf("[pwd]   INODE: %6u  PATH: %s\n",
 959                cwd, pathname ? pathname : "NULL");
 960         if (pathname) {
 961                 free(pathname);
 962                 pathname = NULL;
 963         }
 964         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 965         if (retval) {
 966                 com_err(argv[0], retval,
 967                         "while trying to get pathname of root");
 968         }
 969         printf("[root]  INODE: %6u  PATH: %s\n",
 970                root, pathname ? pathname : "NULL");
 971         if (pathname) {
 972                 free(pathname);
 973                 pathname = NULL;
 974         }
 975         return;
 976 }
 977
 978 /*
 979  * Given a mode, return the ext2 file type
 980  */
 981 static int ext2_file_type(unsigned int mode)
 982 {
 983         if (LINUX_S_ISREG(mode))
 984                 return EXT2_FT_REG_FILE;
 985
 986         if (LINUX_S_ISDIR(mode))
 987                 return EXT2_FT_DIR;
 988
 989         if (LINUX_S_ISCHR(mode))
 990                 return EXT2_FT_CHRDEV;
 991
 992         if (LINUX_S_ISBLK(mode))
 993                 return EXT2_FT_BLKDEV;
 994
 995         if (LINUX_S_ISLNK(mode))
 996                 return EXT2_FT_SYMLINK;
 997
 998         if (LINUX_S_ISFIFO(mode))
 999                 return EXT2_FT_FIFO;
1000
1001         if (LINUX_S_ISSOCK(mode))
1002                 return EXT2_FT_SOCK;
1003
1004         return 0;
1005 }
1006
1007 static void make_link(char *sourcename, char *destname)
1008 {
1009         ext2_ino_t      ino;
1010         struct ext2_inode inode;
1011         int             retval;
1012         ext2_ino_t      dir;
1013         char            *dest, *cp, *base_name;
1014
1015         /*
1016          * Get the source inode
1017          */
1018         ino = string_to_inode(sourcename);
1019         if (!ino)
1020                 return;
1021         base_name = strrchr(sourcename, '/');
1022         if (base_name)
1023                 base_name++;
1024         else
1025                 base_name = sourcename;
1026         /*
1027          * Figure out the destination.  First see if it exists and is
1028          * a directory.
1029          */
1030         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1031                 dest = base_name;
1032         else {
1033                 /*
1034                  * OK, it doesn't exist.  See if it is
1035                  * '<dir>/basename' or 'basename'
1036                  */
1037                 cp = strrchr(destname, '/');
1038                 if (cp) {
1039                         *cp = 0;
1040                         dir = string_to_inode(destname);
1041                         if (!dir)
1042                                 return;
1043                         dest = cp+1;
1044                 } else {
1045                         dir = cwd;
1046                         dest = destname;
1047                 }
1048         }
1049
1050         if (debugfs_read_inode(ino, &inode, sourcename))
1051                 return;
1052
1053         retval = ext2fs_link(current_fs, dir, dest, ino,
1054                              ext2_file_type(inode.i_mode));
1055         if (retval)
1056                 com_err("make_link", retval, 0);
1057         return;
1058 }
1059
1060
1061 void do_link(int argc, char *argv[])
1062 {
1063         if (common_args_process(argc, argv, 3, 3, "link",
1064                                 "<source file> <dest_name>", CHECK_FS_RW))
1065                 return;
1066
1067         make_link(argv[1], argv[2]);
1068 }
1069
1070 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1071                             int blockcnt EXT2FS_ATTR((unused)),
1072                             void *private EXT2FS_ATTR((unused)))
1073 {
1074         blk_t   block;
1075
1076         block = *blocknr;
1077         ext2fs_block_alloc_stats(fs, block, +1);
1078         return 0;
1079 }
1080
1081 void do_undel(int argc, char *argv[])
1082 {
1083         ext2_ino_t      ino;
1084         struct ext2_inode inode;
1085
1086         if (common_args_process(argc, argv, 2, 3, "undelete",
1087                                 "<inode_num> [dest_name]",
1088                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1089                 return;
1090
1091         ino = string_to_inode(argv[1]);
1092         if (!ino)
1093                 return;
1094
1095         if (debugfs_read_inode(ino, &inode, argv[1]))
1096                 return;
1097
1098         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1099                 com_err(argv[1], 0, "Inode is not marked as deleted");
1100                 return;
1101         }
1102
1103         /*
1104          * XXX this function doesn't handle changing the links count on the
1105          * parent directory when undeleting a directory.
1106          */
1107         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1108         inode.i_dtime = 0;
1109
1110         if (debugfs_write_inode(ino, &inode, argv[0]))
1111                 return;
1112
1113         ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1114                              mark_blocks_proc, NULL);
1115
1116         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1117
1118         if (argc > 2)
1119                 make_link(argv[1], argv[2]);
1120 }
1121
1122 static void unlink_file_by_name(char *filename)
1123 {
1124         int             retval;
1125         ext2_ino_t      dir;
1126         char            *base_name;
1127
1128         base_name = strrchr(filename, '/');
1129         if (base_name) {
1130                 *base_name++ = '\0';
1131                 dir = string_to_inode(filename);
1132                 if (!dir)
1133                         return;
1134         } else {
1135                 dir = cwd;
1136                 base_name = filename;
1137         }
1138         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1139         if (retval)
1140                 com_err("unlink_file_by_name", retval, 0);
1141         return;
1142 }
1143
1144 void do_unlink(int argc, char *argv[])
1145 {
1146         if (common_args_process(argc, argv, 2, 2, "link",
1147                                 "<pathname>", CHECK_FS_RW))
1148                 return;
1149
1150         unlink_file_by_name(argv[1]);
1151 }
1152
1153 void do_find_free_block(int argc, char *argv[])
1154 {
1155         blk_t   free_blk, goal;
1156         int             count;
1157         errcode_t       retval;
1158         char            *tmp;
1159
1160         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1161                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1162                 return;
1163         }
1164         if (check_fs_open(argv[0]))
1165                 return;
1166
1167         if (argc > 1) {
1168                 count = strtol(argv[1],&tmp,0);
1169                 if (*tmp) {
1170                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1171                         return;
1172                 }
1173         } else
1174                 count = 1;
1175
1176         if (argc > 2) {
1177                 goal = strtol(argv[2], &tmp, 0);
1178                 if (*tmp) {
1179                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1180                         return;
1181                 }
1182         }
1183         else
1184                 goal = current_fs->super->s_first_data_block;
1185
1186         printf("Free blocks found: ");
1187         free_blk = goal - 1;
1188         while (count-- > 0) {
1189                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1190                                           &free_blk);
1191                 if (retval) {
1192                         com_err("ext2fs_new_block", retval, 0);
1193                         return;
1194                 } else
1195                         printf("%u ", free_blk);
1196         }
1197         printf("\n");
1198 }
1199
1200 void do_find_free_inode(int argc, char *argv[])
1201 {
1202         ext2_ino_t      free_inode, dir;
1203         int             mode;
1204         int             retval;
1205         char            *tmp;
1206
1207         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1208                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1209                 return;
1210         }
1211         if (check_fs_open(argv[0]))
1212                 return;
1213
1214         if (argc > 1) {
1215                 dir = strtol(argv[1], &tmp, 0);
1216                 if (*tmp) {
1217                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1218                         return;
1219                 }
1220         }
1221         else
1222                 dir = root;
1223         if (argc > 2) {
1224                 mode = strtol(argv[2], &tmp, 0);
1225                 if (*tmp) {
1226                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1227                         return;
1228                 }
1229         } else
1230                 mode = 010755;
1231
1232         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1233         if (retval)
1234                 com_err("ext2fs_new_inode", retval, 0);
1235         else
1236                 printf("Free inode found: %u\n", free_inode);
1237 }
1238
1239 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1240 {
1241         ext2_file_t     e2_file;
1242         errcode_t       retval;
1243         int             got;
1244         unsigned int    written;
1245         char            buf[8192];
1246         char            *ptr;
1247
1248         retval = ext2fs_file_open(current_fs, newfile,
1249                                   EXT2_FILE_WRITE, &e2_file);
1250         if (retval)
1251                 return retval;
1252
1253         while (1) {
1254                 got = read(fd, buf, sizeof(buf));
1255                 if (got == 0)
1256                         break;
1257                 if (got < 0) {
1258                         retval = errno;
1259                         goto fail;
1260                 }
1261                 ptr = buf;
1262                 while (got > 0) {
1263                         retval = ext2fs_file_write(e2_file, ptr,
1264                                                    got, &written);
1265                         if (retval)
1266                                 goto fail;
1267
1268                         got -= written;
1269                         ptr += written;
1270                 }
1271         }
1272         retval = ext2fs_file_close(e2_file);
1273         return retval;
1274
1275 fail:
1276         (void) ext2fs_file_close(e2_file);
1277         return retval;
1278 }
1279
1280
1281 void do_write(int argc, char *argv[])
1282 {
1283         int             fd;
1284         struct stat     statbuf;
1285         ext2_ino_t      newfile;
1286         errcode_t       retval;
1287         struct ext2_inode inode;
1288
1289         if (common_args_process(argc, argv, 3, 3, "write",
1290                                 "<native file> <new file>", CHECK_FS_RW))
1291                 return;
1292
1293         fd = open(argv[1], O_RDONLY);
1294         if (fd < 0) {
1295                 com_err(argv[1], errno, 0);
1296                 return;
1297         }
1298         if (fstat(fd, &statbuf) < 0) {
1299                 com_err(argv[1], errno, 0);
1300                 close(fd);
1301                 return;
1302         }
1303
1304         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1305         if (retval == 0) {
1306                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1307                 close(fd);
1308                 return;
1309         }
1310
1311         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1312         if (retval) {
1313                 com_err(argv[0], retval, 0);
1314                 close(fd);
1315                 return;
1316         }
1317         printf("Allocated inode: %u\n", newfile);
1318         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1319                              EXT2_FT_REG_FILE);
1320         if (retval == EXT2_ET_DIR_NO_SPACE) {
1321                 retval = ext2fs_expand_dir(current_fs, cwd);
1322                 if (retval) {
1323                         com_err(argv[0], retval, "while expanding directory");
1324                         return;
1325                 }
1326                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1327                                      EXT2_FT_REG_FILE);
1328         }
1329         if (retval) {
1330                 com_err(argv[2], retval, 0);
1331                 close(fd);
1332                 return;
1333         }
1334         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1335                 com_err(argv[0], 0, "Warning: inode already set");
1336         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1337         memset(&inode, 0, sizeof(inode));
1338         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1339         inode.i_atime = inode.i_ctime = inode.i_mtime =
1340                 current_fs->now ? current_fs->now : time(0);
1341         inode.i_links_count = 1;
1342         inode.i_size = statbuf.st_size;
1343         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1344                 close(fd);
1345                 return;
1346         }
1347         if (LINUX_S_ISREG(inode.i_mode)) {
1348                 retval = copy_file(fd, newfile);
1349                 if (retval)
1350                         com_err("copy_file", retval, 0);
1351         }
1352         close(fd);
1353 }
1354
1355 void do_mknod(int argc, char *argv[])
1356 {
1357         unsigned long   mode, major, minor;
1358         ext2_ino_t      newfile;
1359         errcode_t       retval;
1360         struct ext2_inode inode;
1361         int             filetype, nr;
1362
1363         if (check_fs_open(argv[0]))
1364                 return;
1365         if (argc < 3 || argv[2][1]) {
1366         usage:
1367                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1368                 return;
1369         }
1370         mode = minor = major = 0;
1371         switch (argv[2][0]) {
1372                 case 'p':
1373                         mode = LINUX_S_IFIFO;
1374                         filetype = EXT2_FT_FIFO;
1375                         nr = 3;
1376                         break;
1377                 case 'c':
1378                         mode = LINUX_S_IFCHR;
1379                         filetype = EXT2_FT_CHRDEV;
1380                         nr = 5;
1381                         break;
1382                 case 'b':
1383                         mode = LINUX_S_IFBLK;
1384                         filetype = EXT2_FT_BLKDEV;
1385                         nr = 5;
1386                         break;
1387                 default:
1388                         filetype = 0;
1389                         nr = 0;
1390         }
1391         if (nr == 5) {
1392                 major = strtoul(argv[3], argv+3, 0);
1393                 minor = strtoul(argv[4], argv+4, 0);
1394                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1395                         nr = 0;
1396         }
1397         if (argc != nr)
1398                 goto usage;
1399         if (check_fs_read_write(argv[0]))
1400                 return;
1401         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1402         if (retval) {
1403                 com_err(argv[0], retval, 0);
1404                 return;
1405         }
1406         printf("Allocated inode: %u\n", newfile);
1407         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1408         if (retval == EXT2_ET_DIR_NO_SPACE) {
1409                 retval = ext2fs_expand_dir(current_fs, cwd);
1410                 if (retval) {
1411                         com_err(argv[0], retval, "while expanding directory");
1412                         return;
1413                 }
1414                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1415                                      filetype);
1416         }
1417         if (retval) {
1418                 com_err(argv[1], retval, 0);
1419                 return;
1420         }
1421         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1422                 com_err(argv[0], 0, "Warning: inode already set");
1423         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1424         ext2fs_mark_ib_dirty(current_fs);
1425         memset(&inode, 0, sizeof(inode));
1426         inode.i_mode = mode;
1427         inode.i_atime = inode.i_ctime = inode.i_mtime =
1428                 current_fs->now ? current_fs->now : time(0);
1429         if ((major < 256) && (minor < 256)) {
1430                 inode.i_block[0] = major*256+minor;
1431                 inode.i_block[1] = 0;
1432         } else {
1433                 inode.i_block[0] = 0;
1434                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1435         }
1436         inode.i_links_count = 1;
1437         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1438                 return;
1439 }
1440
1441 void do_mkdir(int argc, char *argv[])
1442 {
1443         char    *cp;
1444         ext2_ino_t      parent;
1445         char    *name;
1446         errcode_t retval;
1447
1448         if (common_args_process(argc, argv, 2, 2, "mkdir",
1449                                 "<filename>", CHECK_FS_RW))
1450                 return;
1451
1452         cp = strrchr(argv[1], '/');
1453         if (cp) {
1454                 *cp = 0;
1455                 parent = string_to_inode(argv[1]);
1456                 if (!parent) {
1457                         com_err(argv[1], ENOENT, 0);
1458                         return;
1459                 }
1460                 name = cp+1;
1461         } else {
1462                 parent = cwd;
1463                 name = argv[1];
1464         }
1465
1466 try_again:
1467         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1468         if (retval == EXT2_ET_DIR_NO_SPACE) {
1469                 retval = ext2fs_expand_dir(current_fs, parent);
1470                 if (retval) {
1471                         com_err("argv[0]", retval, "while expanding directory");
1472                         return;
1473                 }
1474                 goto try_again;
1475         }
1476         if (retval) {
1477                 com_err("ext2fs_mkdir", retval, 0);
1478                 return;
1479         }
1480
1481 }
1482
1483 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1484                                int blockcnt EXT2FS_ATTR((unused)),
1485                                void *private EXT2FS_ATTR((unused)))
1486 {
1487         blk_t   block;
1488
1489         block = *blocknr;
1490         ext2fs_block_alloc_stats(fs, block, -1);
1491         return 0;
1492 }
1493
1494 static void kill_file_by_inode(ext2_ino_t inode)
1495 {
1496         struct ext2_inode inode_buf;
1497
1498         if (debugfs_read_inode(inode, &inode_buf, 0))
1499                 return;
1500         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1501         if (debugfs_write_inode(inode, &inode_buf, 0))
1502                 return;
1503         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1504                 return;
1505
1506         ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1507                              release_blocks_proc, NULL);
1508         printf("\n");
1509         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1510                                   LINUX_S_ISDIR(inode_buf.i_mode));
1511 }
1512
1513
1514 void do_kill_file(int argc, char *argv[])
1515 {
1516         ext2_ino_t inode_num;
1517
1518         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1519                 return;
1520
1521         kill_file_by_inode(inode_num);
1522 }
1523
1524 void do_rm(int argc, char *argv[])
1525 {
1526         int retval;
1527         ext2_ino_t inode_num;
1528         struct ext2_inode inode;
1529
1530         if (common_args_process(argc, argv, 2, 2, "rm",
1531                                 "<filename>", CHECK_FS_RW))
1532                 return;
1533
1534         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1535         if (retval) {
1536                 com_err(argv[0], retval, "while trying to resolve filename");
1537                 return;
1538         }
1539
1540         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1541                 return;
1542
1543         if (LINUX_S_ISDIR(inode.i_mode)) {
1544                 com_err(argv[0], 0, "file is a directory");
1545                 return;
1546         }
1547
1548         --inode.i_links_count;
1549         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1550                 return;
1551
1552         unlink_file_by_name(argv[1]);
1553         if (inode.i_links_count == 0)
1554                 kill_file_by_inode(inode_num);
1555 }
1556
1557 struct rd_struct {
1558         ext2_ino_t      parent;
1559         int             empty;
1560 };
1561
1562 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1563                       int       entry EXT2FS_ATTR((unused)),
1564                       struct ext2_dir_entry *dirent,
1565                       int       offset EXT2FS_ATTR((unused)),
1566                       int       blocksize EXT2FS_ATTR((unused)),
1567                       char      *buf EXT2FS_ATTR((unused)),
1568                       void      *private)
1569 {
1570         struct rd_struct *rds = (struct rd_struct *) private;
1571
1572         if (dirent->inode == 0)
1573                 return 0;
1574         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1575                 return 0;
1576         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1577             (dirent->name[1] == '.')) {
1578                 rds->parent = dirent->inode;
1579                 return 0;
1580         }
1581         rds->empty = 0;
1582         return 0;
1583 }
1584
1585 void do_rmdir(int argc, char *argv[])
1586 {
1587         int retval;
1588         ext2_ino_t inode_num;
1589         struct ext2_inode inode;
1590         struct rd_struct rds;
1591
1592         if (common_args_process(argc, argv, 2, 2, "rmdir",
1593                                 "<filename>", CHECK_FS_RW))
1594                 return;
1595
1596         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1597         if (retval) {
1598                 com_err(argv[0], retval, "while trying to resolve filename");
1599                 return;
1600         }
1601
1602         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1603                 return;
1604
1605         if (!LINUX_S_ISDIR(inode.i_mode)) {
1606                 com_err(argv[0], 0, "file is not a directory");
1607                 return;
1608         }
1609
1610         rds.parent = 0;
1611         rds.empty = 1;
1612
1613         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1614                                     0, rmdir_proc, &rds);
1615         if (retval) {
1616                 com_err(argv[0], retval, "while iterating over directory");
1617                 return;
1618         }
1619         if (rds.empty == 0) {
1620                 com_err(argv[0], 0, "directory not empty");
1621                 return;
1622         }
1623
1624         inode.i_links_count = 0;
1625         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1626                 return;
1627
1628         unlink_file_by_name(argv[1]);
1629         kill_file_by_inode(inode_num);
1630
1631         if (rds.parent) {
1632                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1633                         return;
1634                 if (inode.i_links_count > 1)
1635                         inode.i_links_count--;
1636                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1637                         return;
1638         }
1639 }
1640
1641 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1642                             char *argv[] EXT2FS_ATTR((unused)))
1643 {
1644         FILE *out = stdout;
1645
1646         if (current_fs)
1647                 fprintf(out, "Open mode: read-%s\n",
1648                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1649         fprintf(out, "Filesystem in use: %s\n",
1650                 current_fs ? current_fs->device_name : "--none--");
1651 }
1652
1653 void do_expand_dir(int argc, char *argv[])
1654 {
1655         ext2_ino_t inode;
1656         int retval;
1657
1658         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1659                 return;
1660
1661         retval = ext2fs_expand_dir(current_fs, inode);
1662         if (retval)
1663                 com_err("ext2fs_expand_dir", retval, 0);
1664         return;
1665 }
1666
1667 void do_features(int argc, char *argv[])
1668 {
1669         int     i;
1670
1671         if (check_fs_open(argv[0]))
1672                 return;
1673
1674         if ((argc != 1) && check_fs_read_write(argv[0]))
1675                 return;
1676         for (i=1; i < argc; i++) {
1677                 if (e2p_edit_feature(argv[i],
1678                                      &current_fs->super->s_feature_compat, 0))
1679                         com_err(argv[0], 0, "Unknown feature: %s\n",
1680                                 argv[i]);
1681                 else
1682                         ext2fs_mark_super_dirty(current_fs);
1683         }
1684         print_features(current_fs->super, stdout);
1685 }
1686
1687 void do_bmap(int argc, char *argv[])
1688 {
1689         ext2_ino_t      ino;
1690         blk_t           blk, pblk;
1691         int             err;
1692         errcode_t       errcode;
1693
1694         if (common_args_process(argc, argv, 3, 3, argv[0],
1695                                 "<file> logical_blk", 0))
1696                 return;
1697
1698         ino = string_to_inode(argv[1]);
1699         if (!ino)
1700                 return;
1701         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1702
1703         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1704         if (errcode) {
1705                 com_err("argv[0]", errcode,
1706                         "while mapping logical block %u\n", blk);
1707                 return;
1708         }
1709         printf("%u\n", pblk);
1710 }
1711
1712 void do_imap(int argc, char *argv[])
1713 {
1714         ext2_ino_t      ino;
1715         unsigned long   group, block, block_nr, offset;
1716
1717         if (common_args_process(argc, argv, 2, 2, argv[0],
1718                                 "<file>", 0))
1719                 return;
1720         ino = string_to_inode(argv[1]);
1721         if (!ino)
1722                 return;
1723
1724         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1725         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1726                 EXT2_INODE_SIZE(current_fs->super);
1727         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1728         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1729                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1730                         group);
1731                 return;
1732         }
1733         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1734                 block;
1735         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1736
1737         printf("Inode %d is part of block group %lu\n"
1738                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1739                block_nr, offset);
1740
1741 }
1742
1743 void do_set_current_time(int argc, char *argv[])
1744 {
1745         time_t now;
1746
1747         if (common_args_process(argc, argv, 2, 2, argv[0],
1748                                 "<time>", 0))
1749                 return;
1750
1751         now = string_to_time(argv[1]);
1752         if (now == ((time_t) -1)) {
1753                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1754                         argv[1]);
1755                 return;
1756
1757         } else {
1758                 printf("Setting current time to %s\n", time_to_string(now));
1759                 current_fs->now = now;
1760         }
1761 }
1762
1763 static int source_file(const char *cmd_file, int sci_idx)
1764 {
1765         FILE            *f;
1766         char            buf[256];
1767         char            *cp;
1768         int             exit_status = 0;
1769         int             retval;
1770
1771         if (strcmp(cmd_file, "-") == 0)
1772                 f = stdin;
1773         else {
1774                 f = fopen(cmd_file, "r");
1775                 if (!f) {
1776                         perror(cmd_file);
1777                         exit(1);
1778                 }
1779         }
1780         setbuf(stdout, NULL);
1781         setbuf(stderr, NULL);
1782         while (!feof(f)) {
1783                 if (fgets(buf, sizeof(buf), f) == NULL)
1784                         break;
1785                 cp = strchr(buf, '\n');
1786                 if (cp)
1787                         *cp = 0;
1788                 cp = strchr(buf, '\r');
1789                 if (cp)
1790                         *cp = 0;
1791                 printf("debugfs: %s\n", buf);
1792                 retval = ss_execute_line(sci_idx, buf);
1793                 if (retval) {
1794                         ss_perror(sci_idx, retval, buf);
1795                         exit_status++;
1796                 }
1797         }
1798         return exit_status;
1799 }
1800
1801 int main(int argc, char **argv)
1802 {
1803         int             retval;
1804         int             sci_idx;
1805         const char      *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1806         int             c;
1807         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1808         char            *request = 0;
1809         int             exit_status = 0;
1810         char            *cmd_file = 0;
1811         blk_t           superblock = 0;
1812         blk_t           blocksize = 0;
1813         int             catastrophic = 0;
1814         char            *data_filename = 0;
1815
1816         if (debug_prog_name == 0)
1817                 debug_prog_name = "debugfs";
1818
1819         add_error_table(&et_ext2_error_table);
1820         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
1821                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
1822
1823         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1824                 switch (c) {
1825                 case 'R':
1826                         request = optarg;
1827                         break;
1828                 case 'f':
1829                         cmd_file = optarg;
1830                         break;
1831                 case 'd':
1832                         data_filename = optarg;
1833                         break;
1834                 case 'i':
1835                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1836                         break;
1837                 case 'w':
1838                         open_flags |= EXT2_FLAG_RW;
1839                         break;
1840                 case 'b':
1841                         blocksize = parse_ulong(optarg, argv[0],
1842                                                 "block size", 0);
1843                         break;
1844                 case 's':
1845                         superblock = parse_ulong(optarg, argv[0],
1846                                                  "superblock number", 0);
1847                         break;
1848                 case 'c':
1849                         catastrophic = 1;
1850                         break;
1851                 case 'V':
1852                         /* Print version number and exit */
1853                         fprintf(stderr, "\tUsing %s\n",
1854                                 error_message(EXT2_ET_BASE));
1855                         exit(0);
1856                 default:
1857                         com_err(argv[0], 0, usage, debug_prog_name);
1858                         return 1;
1859                 }
1860         }
1861         if (optind < argc)
1862                 open_filesystem(argv[optind], open_flags,
1863                                 superblock, blocksize, catastrophic,
1864                                 data_filename);
1865
1866         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
1867                                        &debug_cmds, &retval);
1868         if (retval) {
1869                 ss_perror(sci_idx, retval, "creating invocation");
1870                 exit(1);
1871         }
1872         ss_get_readline(sci_idx);
1873
1874         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1875         if (retval) {
1876                 ss_perror(sci_idx, retval, "adding standard requests");
1877                 exit (1);
1878         }
1879         if (extra_cmds)
1880                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
1881         if (retval) {
1882                 ss_perror(sci_idx, retval, "adding extra requests");
1883                 exit (1);
1884         }
1885         if (request) {
1886                 retval = 0;
1887                 retval = ss_execute_line(sci_idx, request);
1888                 if (retval) {
1889                         ss_perror(sci_idx, retval, request);
1890                         exit_status++;
1891                 }
1892         } else if (cmd_file) {
1893                 exit_status = source_file(cmd_file, sci_idx);
1894         } else {
1895                 ss_listen(sci_idx);
1896         }
1897
1898         if (current_fs)
1899                 close_filesystem();
1900
1901         remove_error_table(&et_ext2_error_table);
1902         return exit_status;
1903 }