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 = 0;
 128         char    *data_filename = 0;
 129
 130         reset_getopt();
 131         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
 132                 switch (c) {
 133                 case 'i':
 134                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 135                         break;
 136                 case 'w':
 137                         open_flags |= EXT2_FLAG_RW;
 138                         break;
 139                 case 'f':
 140                         open_flags |= EXT2_FLAG_FORCE;
 141                         break;
 142                 case 'e':
 143                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 144                         break;
 145                 case 'c':
 146                         catastrophic = 1;
 147                         break;
 148                 case 'd':
 149                         data_filename = optarg;
 150                         break;
 151                 case 'b':
 152                         blocksize = parse_ulong(optarg, argv[0],
 153                                                 "block size", &err);
 154                         if (err)
 155                                 return;
 156                         break;
 157                 case 's':
 158                         superblock = parse_ulong(optarg, argv[0],
 159                                                  "superblock number", &err);
 160                         if (err)
 161                                 return;
 162                         break;
 163                 default:
 164                         goto print_usage;
 165                 }
 166         }
 167         if (optind != argc-1) {
 168                 goto print_usage;
 169         }
 170         if (check_fs_not_open(argv[0]))
 171                 return;
 172         open_filesystem(argv[optind], open_flags,
 173                         superblock, blocksize, catastrophic,
 174                         data_filename);
 175         return;
 176
 177 print_usage:
 178         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 179                 "[-c] [-w] <device>\n", argv[0]);
 180 }
 181
 182 void do_lcd(int argc, char **argv)
 183 {
 184         if (common_args_process(argc, argv, 2, 2, "lcd",
 185                                 "<native dir>", 0))
 186                 return;
 187
 188         if (chdir(argv[1]) == -1) {
 189                 com_err(argv[0], errno,
 190                         "while trying to change native directory to %s",
 191                         argv[1]);
 192                 return;
 193         }
 194 }
 195
 196 static void close_filesystem(NOARGS)
 197 {
 198         int     retval;
 199
 200         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 201                 retval = ext2fs_write_inode_bitmap(current_fs);
 202                 if (retval)
 203                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 204         }
 205         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 206                 retval = ext2fs_write_block_bitmap(current_fs);
 207                 if (retval)
 208                         com_err("ext2fs_write_block_bitmap", retval, 0);
 209         }
 210         retval = ext2fs_close(current_fs);
 211         if (retval)
 212                 com_err("ext2fs_close", retval, 0);
 213         current_fs = NULL;
 214         return;
 215 }
 216
 217 void do_close_filesys(int argc, char **argv)
 218 {
 219         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 220                 return;
 221         close_filesystem();
 222 }
 223
 224 void do_init_filesys(int argc, char **argv)
 225 {
 226         struct ext2_super_block param;
 227         errcode_t       retval;
 228         int             err;
 229
 230         if (common_args_process(argc, argv, 3, 3, "initialize",
 231                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 232                 return;
 233
 234         memset(&param, 0, sizeof(struct ext2_super_block));
 235         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 236                                            "blocks count", &err);
 237         if (err)
 238                 return;
 239         retval = ext2fs_initialize(argv[1], 0, &param,
 240                                    unix_io_manager, &current_fs);
 241         if (retval) {
 242                 com_err(argv[1], retval, "while initializing filesystem");
 243                 current_fs = NULL;
 244                 return;
 245         }
 246         root = cwd = EXT2_ROOT_INO;
 247         return;
 248 }
 249
 250 static void print_features(struct ext2_super_block * s, FILE *f)
 251 {
 252         int     i, j, printed=0;
 253         __u32   *mask = &s->s_feature_compat, m;
 254
 255         fputs("Filesystem features:", f);
 256         for (i=0; i <3; i++,mask++) {
 257                 for (j=0,m=1; j < 32; j++, m<<=1) {
 258                         if (*mask & m) {
 259                                 fprintf(f, " %s", e2p_feature2string(i, m));
 260                                 printed++;
 261                         }
 262                 }
 263         }
 264         if (printed == 0)
 265                 fputs("(none)", f);
 266         fputs("\n", f);
 267 }
 268
 269 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
 270                           const char *str, int *first, FILE *f)
 271 {
 272         if (gdp->bg_flags & mask) {
 273                 if (*first) {
 274                         fputs("           [", f);
 275                         *first = 0;
 276                 } else
 277                         fputs(", ", f);
 278                 fputs(str, f);
 279         }
 280 }
 281
 282 void do_show_super_stats(int argc, char *argv[])
 283 {
 284         dgrp_t  i;
 285         FILE    *out;
 286         struct ext2_group_desc *gdp;
 287         int     c, header_only = 0;
 288         int     numdirs = 0, first;
 289
 290         reset_getopt();
 291         while ((c = getopt (argc, argv, "h")) != EOF) {
 292                 switch (c) {
 293                 case 'h':
 294                         header_only++;
 295                         break;
 296                 default:
 297                         goto print_usage;
 298                 }
 299         }
 300         if (optind != argc) {
 301                 goto print_usage;
 302         }
 303         if (check_fs_open(argv[0]))
 304                 return;
 305         out = open_pager();
 306
 307         list_super2(current_fs->super, out);
 308         for (i=0; i < current_fs->group_desc_count; i++)
 309                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 310         fprintf(out, "Directories:              %d\n", numdirs);
 311
 312         if (header_only) {
 313                 close_pager(out);
 314                 return;
 315         }
 316
 317         gdp = &current_fs->group_desc[0];
 318         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 319                 fprintf(out, " Group %2d: block bitmap at %u, "
 320                         "inode bitmap at %u, "
 321                         "inode table at %u\n"
 322                         "           %d free %s, "
 323                         "%d free %s, "
 324                         "%d used %s\n",
 325                         i, gdp->bg_block_bitmap,
 326                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 327                         gdp->bg_free_blocks_count,
 328                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 329                         gdp->bg_free_inodes_count,
 330                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 331                         gdp->bg_used_dirs_count,
 332                         gdp->bg_used_dirs_count != 1 ? "directories"
 333                                 : "directory");
 334                 first = 1;
 335                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
 336                               &first, out);
 337                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
 338                               &first, out);
 339                 if (!first)
 340                         fputs("]\n", out);
 341         }
 342         close_pager(out);
 343         return;
 344 print_usage:
 345         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 346 }
 347
 348 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 349                       char **argv EXT2FS_ATTR((unused)))
 350 {
 351         if (check_fs_open(argv[0]))
 352                 return;
 353         if (check_fs_read_write(argv[0]))
 354                 return;
 355
 356         if (argv[1] && !strcmp(argv[1], "-clean"))
 357                 current_fs->super->s_state |= EXT2_VALID_FS;
 358         else
 359                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 360         ext2fs_mark_super_dirty(current_fs);
 361 }
 362
 363 struct list_blocks_struct {
 364         FILE            *f;
 365         e2_blkcnt_t     total;
 366         blk_t           first_block, last_block;
 367         e2_blkcnt_t     first_bcnt, last_bcnt;
 368         e2_blkcnt_t     first;
 369 };
 370
 371 static void finish_range(struct list_blocks_struct *lb)
 372 {
 373         if (lb->first_block == 0)
 374                 return;
 375         if (lb->first)
 376                 lb->first = 0;
 377         else
 378                 fprintf(lb->f, ", ");
 379         if (lb->first_block == lb->last_block)
 380                 fprintf(lb->f, "(%lld):%u", lb->first_bcnt, lb->first_block);
 381         else
 382                 fprintf(lb->f, "(%lld-%lld):%u-%u", lb->first_bcnt,
 383                         lb->last_bcnt, lb->first_block, lb->last_block);
 384         lb->first_block = 0;
 385 }
 386
 387 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 388                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 389                             blk_t ref_block EXT2FS_ATTR((unused)),
 390                             int ref_offset EXT2FS_ATTR((unused)),
 391                             void *private)
 392 {
 393         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 394
 395         lb->total++;
 396         if (blockcnt >= 0) {
 397                 /*
 398                  * See if we can add on to the existing range (if it exists)
 399                  */
 400                 if (lb->first_block &&
 401                     (lb->last_block+1 == *blocknr) &&
 402                     (lb->last_bcnt+1 == blockcnt)) {
 403                         lb->last_block = *blocknr;
 404                         lb->last_bcnt = blockcnt;
 405                         return 0;
 406                 }
 407                 /*
 408                  * Start a new range.
 409                  */
 410                 finish_range(lb);
 411                 lb->first_block = lb->last_block = *blocknr;
 412                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 413                 return 0;
 414         }
 415         /*
 416          * Not a normal block.  Always force a new range.
 417          */
 418         finish_range(lb);
 419         if (lb->first)
 420                 lb->first = 0;
 421         else
 422                 fprintf(lb->f, ", ");
 423         if (blockcnt == -1)
 424                 fprintf(lb->f, "(IND):%u", *blocknr);
 425         else if (blockcnt == -2)
 426                 fprintf(lb->f, "(DIND):%u", *blocknr);
 427         else if (blockcnt == -3)
 428                 fprintf(lb->f, "(TIND):%u", *blocknr);
 429         return 0;
 430 }
 431
 432 static void dump_xattr_string(FILE *out, const char *str, int len)
 433 {
 434         int printable = 1;
 435         int i;
 436
 437         /* check is string printable? */
 438         for (i = 0; i < len; i++)
 439                 if (!isprint(str[i])) {
 440                         printable = 0;
 441                         break;
 442                 }
 443
 444         for (i = 0; i < len; i++)
 445                 if (printable)
 446                         fprintf(out, "%c", str[i]);
 447                 else
 448                         fprintf(out, "%02x ", str[i]);
 449 }
 450
 451 static void internal_dump_inode_extra(FILE *out, const char *prefix,
 452                                       ext2_ino_t inode_num,
 453                                       struct ext2_inode_large *inode)
 454 {
 455         struct ext2_ext_attr_entry *entry;
 456         __u32 *magic;
 457         char *start, *end;
 458         unsigned int storage_size;
 459
 460         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 461         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 462                         EXT2_GOOD_OLD_INODE_SIZE) {
 463                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 464                                 inode->i_extra_isize);
 465                 return;
 466         }
 467         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 468                         EXT2_GOOD_OLD_INODE_SIZE -
 469                         inode->i_extra_isize;
 470         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 471                         inode->i_extra_isize);
 472         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 473                 fprintf(out, "Extended attributes stored in inode body: \n");
 474                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 475                 start = (char *) magic + sizeof(__u32);
 476                 entry = (struct ext2_ext_attr_entry *) start;
 477                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 478                         struct ext2_ext_attr_entry *next =
 479                                 EXT2_EXT_ATTR_NEXT(entry);
 480                         if (entry->e_value_size > storage_size ||
 481                                         (char *) next >= end) {
 482                                 fprintf(out, "invalid EA entry in inode\n");
 483                                 return;
 484                         }
 485                         fprintf(out, "  ");
 486                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 487                                           entry->e_name_len);
 488                         fprintf(out, " = \"");
 489                         dump_xattr_string(out, start + entry->e_value_offs,
 490                                                 entry->e_value_size);
 491                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 492                         entry = next;
 493                 }
 494         }
 495 }
 496
 497 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 498 {
 499         struct list_blocks_struct lb;
 500
 501         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 502         lb.total = 0;
 503         lb.first_block = 0;
 504         lb.f = f;
 505         lb.first = 1;
 506         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 507                              list_blocks_proc, (void *)&lb);
 508         finish_range(&lb);
 509         if (lb.total)
 510                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 511         fprintf(f,"\n");
 512 }
 513
 514
 515 void internal_dump_inode(FILE *out, const char *prefix,
 516                          ext2_ino_t inode_num, struct ext2_inode *inode,
 517                          int do_dump_blocks)
 518 {
 519         const char *i_type;
 520         char frag, fsize;
 521         int os = current_fs->super->s_creator_os;
 522
 523         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 524         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 525         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 526         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 527         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 528         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 529         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 530         else i_type = "bad type";
 531         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 532         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 533                 prefix,
 534                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 535         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 536                 prefix, inode->i_uid, inode->i_gid);
 537         if (LINUX_S_ISREG(inode->i_mode)) {
 538                 __u64 i_size = (inode->i_size |
 539                                 ((unsigned long long)inode->i_size_high << 32));
 540
 541                 fprintf(out, "%lld\n", i_size);
 542         } else
 543                 fprintf(out, "%d\n", inode->i_size);
 544         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 545                 fprintf(out,
 546                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 547                         prefix,
 548                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 549                         inode->osd1.hurd1.h_i_translator);
 550         else
 551                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 552                         prefix,
 553                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 554         fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 555                 prefix, inode->i_links_count, inode->i_blocks);
 556         switch (os) {
 557             case EXT2_OS_LINUX:
 558                 frag = inode->osd2.linux2.l_i_frag;
 559                 fsize = inode->osd2.linux2.l_i_fsize;
 560                 break;
 561             case EXT2_OS_HURD:
 562                 frag = inode->osd2.hurd2.h_i_frag;
 563                 fsize = inode->osd2.hurd2.h_i_fsize;
 564                 break;
 565             case EXT2_OS_MASIX:
 566                 frag = inode->osd2.masix2.m_i_frag;
 567                 fsize = inode->osd2.masix2.m_i_fsize;
 568                 break;
 569             default:
 570                 frag = fsize = 0;
 571         }
 572         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 573                 prefix, inode->i_faddr, frag, fsize);
 574         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 575                 time_to_string(inode->i_ctime));
 576         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 577                 time_to_string(inode->i_atime));
 578         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 579                 time_to_string(inode->i_mtime));
 580         if (inode->i_dtime)
 581           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 582                   time_to_string(inode->i_dtime));
 583         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 584                 internal_dump_inode_extra(out, prefix, inode_num,
 585                                           (struct ext2_inode_large *) inode);
 586         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 587                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 588                         (int) inode->i_size, (char *)inode->i_block);
 589         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 590                 int major, minor;
 591                 const char *devnote;
 592
 593                 if (inode->i_block[0]) {
 594                         major = (inode->i_block[0] >> 8) & 255;
 595                         minor = inode->i_block[0] & 255;
 596                         devnote = "";
 597                 } else {
 598                         major = (inode->i_block[1] & 0xfff00) >> 8;
 599                         minor = ((inode->i_block[1] & 0xff) |
 600                                  ((inode->i_block[1] >> 12) & 0xfff00));
 601                         devnote = "(New-style) ";
 602                 }
 603                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 604                         devnote, major, minor, major, minor);
 605         }
 606         else if (do_dump_blocks)
 607                 dump_blocks(out, prefix, inode_num);
 608 }
 609
 610 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 611 {
 612         FILE    *out;
 613
 614         out = open_pager();
 615         internal_dump_inode(out, "", inode_num, inode, 1);
 616         close_pager(out);
 617 }
 618
 619 void do_stat(int argc, char *argv[])
 620 {
 621         ext2_ino_t      inode;
 622         struct ext2_inode * inode_buf;
 623
 624         if (check_fs_open(argv[0]))
 625                 return;
 626
 627         inode_buf = (struct ext2_inode *)
 628                         malloc(EXT2_INODE_SIZE(current_fs->super));
 629         if (!inode_buf) {
 630                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 631                 return;
 632         }
 633
 634         if (common_inode_args_process(argc, argv, &inode, 0)) {
 635                 free(inode_buf);
 636                 return;
 637         }
 638
 639         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 640                                         EXT2_INODE_SIZE(current_fs->super))) {
 641                 free(inode_buf);
 642                 return;
 643         }
 644
 645         dump_inode(inode, inode_buf);
 646         free(inode_buf);
 647         return;
 648 }
 649
 650 void do_chroot(int argc, char *argv[])
 651 {
 652         ext2_ino_t inode;
 653         int retval;
 654
 655         if (common_inode_args_process(argc, argv, &inode, 0))
 656                 return;
 657
 658         retval = ext2fs_check_directory(current_fs, inode);
 659         if (retval)  {
 660                 com_err(argv[1], retval, 0);
 661                 return;
 662         }
 663         root = inode;
 664 }
 665
 666 void do_clri(int argc, char *argv[])
 667 {
 668         ext2_ino_t inode;
 669         struct ext2_inode inode_buf;
 670
 671         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 672                 return;
 673
 674         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 675                 return;
 676         memset(&inode_buf, 0, sizeof(inode_buf));
 677         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 678                 return;
 679 }
 680
 681 void do_freei(int argc, char *argv[])
 682 {
 683         ext2_ino_t inode;
 684
 685         if (common_inode_args_process(argc, argv, &inode,
 686                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 687                 return;
 688
 689         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 690                 com_err(argv[0], 0, "Warning: inode already clear");
 691         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 692         ext2fs_mark_ib_dirty(current_fs);
 693 }
 694
 695 void do_seti(int argc, char *argv[])
 696 {
 697         ext2_ino_t inode;
 698
 699         if (common_inode_args_process(argc, argv, &inode,
 700                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 701                 return;
 702
 703         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 704                 com_err(argv[0], 0, "Warning: inode already set");
 705         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 706         ext2fs_mark_ib_dirty(current_fs);
 707 }
 708
 709 void do_testi(int argc, char *argv[])
 710 {
 711         ext2_ino_t inode;
 712
 713         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 714                 return;
 715
 716         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 717                 printf("Inode %u is marked in use\n", inode);
 718         else
 719                 printf("Inode %u is not in use\n", inode);
 720 }
 721
 722 void do_freeb(int argc, char *argv[])
 723 {
 724         blk_t block;
 725         int count = 1;
 726
 727         if (common_block_args_process(argc, argv, &block, &count))
 728                 return;
 729         if (check_fs_read_write(argv[0]))
 730                 return;
 731         while (count-- > 0) {
 732                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 733                         com_err(argv[0], 0, "Warning: block %u already clear",
 734                                 block);
 735                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 736                 block++;
 737         }
 738         ext2fs_mark_bb_dirty(current_fs);
 739 }
 740
 741 void do_setb(int argc, char *argv[])
 742 {
 743         blk_t block;
 744         int count = 1;
 745
 746         if (common_block_args_process(argc, argv, &block, &count))
 747                 return;
 748         if (check_fs_read_write(argv[0]))
 749                 return;
 750         while (count-- > 0) {
 751                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 752                         com_err(argv[0], 0, "Warning: block %u already set",
 753                                 block);
 754                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 755                 block++;
 756         }
 757         ext2fs_mark_bb_dirty(current_fs);
 758 }
 759
 760 void do_testb(int argc, char *argv[])
 761 {
 762         blk_t block;
 763         int count = 1;
 764
 765         if (common_block_args_process(argc, argv, &block, &count))
 766                 return;
 767         while (count-- > 0) {
 768                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 769                         printf("Block %u marked in use\n", block);
 770                 else
 771                         printf("Block %u not in use\n", block);
 772                 block++;
 773         }
 774 }
 775
 776 static void modify_u8(char *com, const char *prompt,
 777                       const char *format, __u8 *val)
 778 {
 779         char buf[200];
 780         unsigned long v;
 781         char *tmp;
 782
 783         sprintf(buf, format, *val);
 784         printf("%30s    [%s] ", prompt, buf);
 785         fgets(buf, sizeof(buf), stdin);
 786         if (buf[strlen (buf) - 1] == '\n')
 787                 buf[strlen (buf) - 1] = '\0';
 788         if (!buf[0])
 789                 return;
 790         v = strtoul(buf, &tmp, 0);
 791         if (*tmp)
 792                 com_err(com, 0, "Bad value - %s", buf);
 793         else
 794                 *val = v;
 795 }
 796
 797 static void modify_u16(char *com, const char *prompt,
 798                        const char *format, __u16 *val)
 799 {
 800         char buf[200];
 801         unsigned long v;
 802         char *tmp;
 803
 804         sprintf(buf, format, *val);
 805         printf("%30s    [%s] ", prompt, buf);
 806         fgets(buf, sizeof(buf), stdin);
 807         if (buf[strlen (buf) - 1] == '\n')
 808                 buf[strlen (buf) - 1] = '\0';
 809         if (!buf[0])
 810                 return;
 811         v = strtoul(buf, &tmp, 0);
 812         if (*tmp)
 813                 com_err(com, 0, "Bad value - %s", buf);
 814         else
 815                 *val = v;
 816 }
 817
 818 static void modify_u32(char *com, const char *prompt,
 819                        const char *format, __u32 *val)
 820 {
 821         char buf[200];
 822         unsigned long v;
 823         char *tmp;
 824
 825         sprintf(buf, format, *val);
 826         printf("%30s    [%s] ", prompt, buf);
 827         fgets(buf, sizeof(buf), stdin);
 828         if (buf[strlen (buf) - 1] == '\n')
 829                 buf[strlen (buf) - 1] = '\0';
 830         if (!buf[0])
 831                 return;
 832         v = strtoul(buf, &tmp, 0);
 833         if (*tmp)
 834                 com_err(com, 0, "Bad value - %s", buf);
 835         else
 836                 *val = v;
 837 }
 838
 839
 840 void do_modify_inode(int argc, char *argv[])
 841 {
 842         struct ext2_inode inode;
 843         ext2_ino_t      inode_num;
 844         int             i;
 845         unsigned char   *frag, *fsize;
 846         char            buf[80];
 847         int             os;
 848         const char      *hex_format = "0x%x";
 849         const char      *octal_format = "0%o";
 850         const char      *decimal_format = "%d";
 851         const char      *unsignedlong_format = "%lu";
 852
 853         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 854                 return;
 855
 856         os = current_fs->super->s_creator_os;
 857
 858         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 859                 return;
 860
 861         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 862         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 863         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 864         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 865         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 866         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 867         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 868         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 869         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 870         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 871         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 872         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 873 #if 0
 874         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 875 #endif
 876         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 877         if (LINUX_S_ISDIR(inode.i_mode))
 878                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 879         else
 880                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 881
 882         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 883                 modify_u32(argv[0], "Translator Block",
 884                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 885
 886         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 887         switch (os) {
 888             case EXT2_OS_LINUX:
 889                 frag = &inode.osd2.linux2.l_i_frag;
 890                 fsize = &inode.osd2.linux2.l_i_fsize;
 891                 break;
 892             case EXT2_OS_HURD:
 893                 frag = &inode.osd2.hurd2.h_i_frag;
 894                 fsize = &inode.osd2.hurd2.h_i_fsize;
 895                 break;
 896             case EXT2_OS_MASIX:
 897                 frag = &inode.osd2.masix2.m_i_frag;
 898                 fsize = &inode.osd2.masix2.m_i_fsize;
 899                 break;
 900             default:
 901                 frag = fsize = 0;
 902         }
 903         if (frag)
 904                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 905         if (fsize)
 906                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 907
 908         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 909                 sprintf(buf, "Direct Block #%d", i);
 910                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 911         }
 912         modify_u32(argv[0], "Indirect Block", decimal_format,
 913                     &inode.i_block[EXT2_IND_BLOCK]);
 914         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 915                     &inode.i_block[EXT2_DIND_BLOCK]);
 916         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 917                     &inode.i_block[EXT2_TIND_BLOCK]);
 918         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 919                 return;
 920 }
 921
 922 void do_change_working_dir(int argc, char *argv[])
 923 {
 924         ext2_ino_t      inode;
 925         int             retval;
 926
 927         if (common_inode_args_process(argc, argv, &inode, 0))
 928                 return;
 929
 930         retval = ext2fs_check_directory(current_fs, inode);
 931         if (retval) {
 932                 com_err(argv[1], retval, 0);
 933                 return;
 934         }
 935         cwd = inode;
 936         return;
 937 }
 938
 939 void do_print_working_directory(int argc, char *argv[])
 940 {
 941         int     retval;
 942         char    *pathname = NULL;
 943
 944         if (common_args_process(argc, argv, 1, 1,
 945                                 "print_working_directory", "", 0))
 946                 return;
 947
 948         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 949         if (retval) {
 950                 com_err(argv[0], retval,
 951                         "while trying to get pathname of cwd");
 952         }
 953         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 954         free(pathname);
 955         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 956         if (retval) {
 957                 com_err(argv[0], retval,
 958                         "while trying to get pathname of root");
 959         }
 960         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 961         free(pathname);
 962         return;
 963 }
 964
 965 /*
 966  * Given a mode, return the ext2 file type
 967  */
 968 static int ext2_file_type(unsigned int mode)
 969 {
 970         if (LINUX_S_ISREG(mode))
 971                 return EXT2_FT_REG_FILE;
 972
 973         if (LINUX_S_ISDIR(mode))
 974                 return EXT2_FT_DIR;
 975
 976         if (LINUX_S_ISCHR(mode))
 977                 return EXT2_FT_CHRDEV;
 978
 979         if (LINUX_S_ISBLK(mode))
 980                 return EXT2_FT_BLKDEV;
 981
 982         if (LINUX_S_ISLNK(mode))
 983                 return EXT2_FT_SYMLINK;
 984
 985         if (LINUX_S_ISFIFO(mode))
 986                 return EXT2_FT_FIFO;
 987
 988         if (LINUX_S_ISSOCK(mode))
 989                 return EXT2_FT_SOCK;
 990
 991         return 0;
 992 }
 993
 994 static void make_link(char *sourcename, char *destname)
 995 {
 996         ext2_ino_t      ino;
 997         struct ext2_inode inode;
 998         int             retval;
 999         ext2_ino_t      dir;
1000         char            *dest, *cp, *basename;
1001
1002         /*
1003          * Get the source inode
1004          */
1005         ino = string_to_inode(sourcename);
1006         if (!ino)
1007                 return;
1008         basename = strrchr(sourcename, '/');
1009         if (basename)
1010                 basename++;
1011         else
1012                 basename = sourcename;
1013         /*
1014          * Figure out the destination.  First see if it exists and is
1015          * a directory.
1016          */
1017         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1018                 dest = basename;
1019         else {
1020                 /*
1021                  * OK, it doesn't exist.  See if it is
1022                  * '<dir>/basename' or 'basename'
1023                  */
1024                 cp = strrchr(destname, '/');
1025                 if (cp) {
1026                         *cp = 0;
1027                         dir = string_to_inode(destname);
1028                         if (!dir)
1029                                 return;
1030                         dest = cp+1;
1031                 } else {
1032                         dir = cwd;
1033                         dest = destname;
1034                 }
1035         }
1036
1037         if (debugfs_read_inode(ino, &inode, sourcename))
1038                 return;
1039
1040         retval = ext2fs_link(current_fs, dir, dest, ino,
1041                              ext2_file_type(inode.i_mode));
1042         if (retval)
1043                 com_err("make_link", retval, 0);
1044         return;
1045 }
1046
1047
1048 void do_link(int argc, char *argv[])
1049 {
1050         if (common_args_process(argc, argv, 3, 3, "link",
1051                                 "<source file> <dest_name>", CHECK_FS_RW))
1052                 return;
1053
1054         make_link(argv[1], argv[2]);
1055 }
1056
1057 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1058                             int blockcnt EXT2FS_ATTR((unused)),
1059                             void *private EXT2FS_ATTR((unused)))
1060 {
1061         blk_t   block;
1062
1063         block = *blocknr;
1064         ext2fs_block_alloc_stats(fs, block, +1);
1065         return 0;
1066 }
1067
1068 void do_undel(int argc, char *argv[])
1069 {
1070         ext2_ino_t      ino;
1071         struct ext2_inode inode;
1072
1073         if (common_args_process(argc, argv, 3, 3, "undelete",
1074                                 "<inode_num> <dest_name>",
1075                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1076                 return;
1077
1078         ino = string_to_inode(argv[1]);
1079         if (!ino)
1080                 return;
1081
1082         if (debugfs_read_inode(ino, &inode, argv[1]))
1083                 return;
1084
1085         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1086                 com_err(argv[1], 0, "Inode is not marked as deleted");
1087                 return;
1088         }
1089
1090         /*
1091          * XXX this function doesn't handle changing the links count on the
1092          * parent directory when undeleting a directory.
1093          */
1094         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1095         inode.i_dtime = 0;
1096
1097         if (debugfs_write_inode(ino, &inode, argv[0]))
1098                 return;
1099
1100         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1101                              mark_blocks_proc, NULL);
1102
1103         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1104
1105         make_link(argv[1], argv[2]);
1106 }
1107
1108 static void unlink_file_by_name(char *filename)
1109 {
1110         int             retval;
1111         ext2_ino_t      dir;
1112         char            *basename;
1113
1114         basename = strrchr(filename, '/');
1115         if (basename) {
1116                 *basename++ = '\0';
1117                 dir = string_to_inode(filename);
1118                 if (!dir)
1119                         return;
1120         } else {
1121                 dir = cwd;
1122                 basename = filename;
1123         }
1124         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1125         if (retval)
1126                 com_err("unlink_file_by_name", retval, 0);
1127         return;
1128 }
1129
1130 void do_unlink(int argc, char *argv[])
1131 {
1132         if (common_args_process(argc, argv, 2, 2, "link",
1133                                 "<pathname>", CHECK_FS_RW))
1134                 return;
1135
1136         unlink_file_by_name(argv[1]);
1137 }
1138
1139 void do_find_free_block(int argc, char *argv[])
1140 {
1141         blk_t   free_blk, goal;
1142         int             count;
1143         errcode_t       retval;
1144         char            *tmp;
1145
1146         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1147                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1148                 return;
1149         }
1150         if (check_fs_open(argv[0]))
1151                 return;
1152
1153         if (argc > 1) {
1154                 count = strtol(argv[1],&tmp,0);
1155                 if (*tmp) {
1156                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1157                         return;
1158                 }
1159         } else
1160                 count = 1;
1161
1162         if (argc > 2) {
1163                 goal = strtol(argv[2], &tmp, 0);
1164                 if (*tmp) {
1165                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1166                         return;
1167                 }
1168         }
1169         else
1170                 goal = current_fs->super->s_first_data_block;
1171
1172         printf("Free blocks found: ");
1173         free_blk = goal - 1;
1174         while (count-- > 0) {
1175                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1176                                           &free_blk);
1177                 if (retval) {
1178                         com_err("ext2fs_new_block", retval, 0);
1179                         return;
1180                 } else
1181                         printf("%u ", free_blk);
1182         }
1183         printf("\n");
1184 }
1185
1186 void do_find_free_inode(int argc, char *argv[])
1187 {
1188         ext2_ino_t      free_inode, dir;
1189         int             mode;
1190         int             retval;
1191         char            *tmp;
1192
1193         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1194                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1195                 return;
1196         }
1197         if (check_fs_open(argv[0]))
1198                 return;
1199
1200         if (argc > 1) {
1201                 dir = strtol(argv[1], &tmp, 0);
1202                 if (*tmp) {
1203                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1204                         return;
1205                 }
1206         }
1207         else
1208                 dir = root;
1209         if (argc > 2) {
1210                 mode = strtol(argv[2], &tmp, 0);
1211                 if (*tmp) {
1212                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1213                         return;
1214                 }
1215         } else
1216                 mode = 010755;
1217
1218         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1219         if (retval)
1220                 com_err("ext2fs_new_inode", retval, 0);
1221         else
1222                 printf("Free inode found: %u\n", free_inode);
1223 }
1224
1225 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1226 {
1227         ext2_file_t     e2_file;
1228         errcode_t       retval;
1229         int             got;
1230         unsigned int    written;
1231         char            buf[8192];
1232         char            *ptr;
1233
1234         retval = ext2fs_file_open(current_fs, newfile,
1235                                   EXT2_FILE_WRITE, &e2_file);
1236         if (retval)
1237                 return retval;
1238
1239         while (1) {
1240                 got = read(fd, buf, sizeof(buf));
1241                 if (got == 0)
1242                         break;
1243                 if (got < 0) {
1244                         retval = errno;
1245                         goto fail;
1246                 }
1247                 ptr = buf;
1248                 while (got > 0) {
1249                         retval = ext2fs_file_write(e2_file, ptr,
1250                                                    got, &written);
1251                         if (retval)
1252                                 goto fail;
1253
1254                         got -= written;
1255                         ptr += written;
1256                 }
1257         }
1258         retval = ext2fs_file_close(e2_file);
1259         return retval;
1260
1261 fail:
1262         (void) ext2fs_file_close(e2_file);
1263         return retval;
1264 }
1265
1266
1267 void do_write(int argc, char *argv[])
1268 {
1269         int             fd;
1270         struct stat     statbuf;
1271         ext2_ino_t      newfile;
1272         errcode_t       retval;
1273         struct ext2_inode inode;
1274
1275         if (common_args_process(argc, argv, 3, 3, "write",
1276                                 "<native file> <new file>", CHECK_FS_RW))
1277                 return;
1278
1279         fd = open(argv[1], O_RDONLY);
1280         if (fd < 0) {
1281                 com_err(argv[1], errno, 0);
1282                 return;
1283         }
1284         if (fstat(fd, &statbuf) < 0) {
1285                 com_err(argv[1], errno, 0);
1286                 close(fd);
1287                 return;
1288         }
1289
1290         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1291         if (retval == 0) {
1292                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1293                 close(fd);
1294                 return;
1295         }
1296
1297         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1298         if (retval) {
1299                 com_err(argv[0], retval, 0);
1300                 close(fd);
1301                 return;
1302         }
1303         printf("Allocated inode: %u\n", newfile);
1304         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1305                              EXT2_FT_REG_FILE);
1306         if (retval == EXT2_ET_DIR_NO_SPACE) {
1307                 retval = ext2fs_expand_dir(current_fs, cwd);
1308                 if (retval) {
1309                         com_err(argv[0], retval, "while expanding directory");
1310                         return;
1311                 }
1312                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1313                                      EXT2_FT_REG_FILE);
1314         }
1315         if (retval) {
1316                 com_err(argv[2], retval, 0);
1317                 close(fd);
1318                 return;
1319         }
1320         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1321                 com_err(argv[0], 0, "Warning: inode already set");
1322         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1323         memset(&inode, 0, sizeof(inode));
1324         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1325         inode.i_atime = inode.i_ctime = inode.i_mtime =
1326                 current_fs->now ? current_fs->now : time(0);
1327         inode.i_links_count = 1;
1328         inode.i_size = statbuf.st_size;
1329         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1330                 close(fd);
1331                 return;
1332         }
1333         if (LINUX_S_ISREG(inode.i_mode)) {
1334                 retval = copy_file(fd, newfile);
1335                 if (retval)
1336                         com_err("copy_file", retval, 0);
1337         }
1338         close(fd);
1339 }
1340
1341 void do_mknod(int argc, char *argv[])
1342 {
1343         unsigned long   mode, major, minor;
1344         ext2_ino_t      newfile;
1345         errcode_t       retval;
1346         struct ext2_inode inode;
1347         int             filetype, nr;
1348
1349         if (check_fs_open(argv[0]))
1350                 return;
1351         if (argc < 3 || argv[2][1]) {
1352         usage:
1353                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1354                 return;
1355         }
1356         mode = minor = major = 0;
1357         switch (argv[2][0]) {
1358                 case 'p':
1359                         mode = LINUX_S_IFIFO;
1360                         filetype = EXT2_FT_FIFO;
1361                         nr = 3;
1362                         break;
1363                 case 'c':
1364                         mode = LINUX_S_IFCHR;
1365                         filetype = EXT2_FT_CHRDEV;
1366                         nr = 5;
1367                         break;
1368                 case 'b':
1369                         mode = LINUX_S_IFBLK;
1370                         filetype = EXT2_FT_BLKDEV;
1371                         nr = 5;
1372                         break;
1373                 default:
1374                         filetype = 0;
1375                         nr = 0;
1376         }
1377         if (nr == 5) {
1378                 major = strtoul(argv[3], argv+3, 0);
1379                 minor = strtoul(argv[4], argv+4, 0);
1380                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1381                         nr = 0;
1382         }
1383         if (argc != nr)
1384                 goto usage;
1385         if (check_fs_read_write(argv[0]))
1386                 return;
1387         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1388         if (retval) {
1389                 com_err(argv[0], retval, 0);
1390                 return;
1391         }
1392         printf("Allocated inode: %u\n", newfile);
1393         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1394         if (retval == EXT2_ET_DIR_NO_SPACE) {
1395                 retval = ext2fs_expand_dir(current_fs, cwd);
1396                 if (retval) {
1397                         com_err(argv[0], retval, "while expanding directory");
1398                         return;
1399                 }
1400                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1401                                      filetype);
1402         }
1403         if (retval) {
1404                 com_err(argv[1], retval, 0);
1405                 return;
1406         }
1407         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1408                 com_err(argv[0], 0, "Warning: inode already set");
1409         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1410         ext2fs_mark_ib_dirty(current_fs);
1411         memset(&inode, 0, sizeof(inode));
1412         inode.i_mode = mode;
1413         inode.i_atime = inode.i_ctime = inode.i_mtime =
1414                 current_fs->now ? current_fs->now : time(0);
1415         if ((major < 256) && (minor < 256)) {
1416                 inode.i_block[0] = major*256+minor;
1417                 inode.i_block[1] = 0;
1418         } else {
1419                 inode.i_block[0] = 0;
1420                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1421         }
1422         inode.i_links_count = 1;
1423         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1424                 return;
1425 }
1426
1427 void do_mkdir(int argc, char *argv[])
1428 {
1429         char    *cp;
1430         ext2_ino_t      parent;
1431         char    *name;
1432         errcode_t retval;
1433
1434         if (common_args_process(argc, argv, 2, 2, "mkdir",
1435                                 "<filename>", CHECK_FS_RW))
1436                 return;
1437
1438         cp = strrchr(argv[1], '/');
1439         if (cp) {
1440                 *cp = 0;
1441                 parent = string_to_inode(argv[1]);
1442                 if (!parent) {
1443                         com_err(argv[1], ENOENT, 0);
1444                         return;
1445                 }
1446                 name = cp+1;
1447         } else {
1448                 parent = cwd;
1449                 name = argv[1];
1450         }
1451
1452 try_again:
1453         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1454         if (retval == EXT2_ET_DIR_NO_SPACE) {
1455                 retval = ext2fs_expand_dir(current_fs, parent);
1456                 if (retval) {
1457                         com_err("argv[0]", retval, "while expanding directory");
1458                         return;
1459                 }
1460                 goto try_again;
1461         }
1462         if (retval) {
1463                 com_err("ext2fs_mkdir", retval, 0);
1464                 return;
1465         }
1466
1467 }
1468
1469 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1470                                int blockcnt EXT2FS_ATTR((unused)),
1471                                void *private EXT2FS_ATTR((unused)))
1472 {
1473         blk_t   block;
1474
1475         block = *blocknr;
1476         ext2fs_block_alloc_stats(fs, block, -1);
1477         return 0;
1478 }
1479
1480 static void kill_file_by_inode(ext2_ino_t inode)
1481 {
1482         struct ext2_inode inode_buf;
1483
1484         if (debugfs_read_inode(inode, &inode_buf, 0))
1485                 return;
1486         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1487         if (debugfs_write_inode(inode, &inode_buf, 0))
1488                 return;
1489         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1490                 return;
1491
1492         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1493                              release_blocks_proc, NULL);
1494         printf("\n");
1495         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1496                                   LINUX_S_ISDIR(inode_buf.i_mode));
1497 }
1498
1499
1500 void do_kill_file(int argc, char *argv[])
1501 {
1502         ext2_ino_t inode_num;
1503
1504         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1505                 return;
1506
1507         kill_file_by_inode(inode_num);
1508 }
1509
1510 void do_rm(int argc, char *argv[])
1511 {
1512         int retval;
1513         ext2_ino_t inode_num;
1514         struct ext2_inode inode;
1515
1516         if (common_args_process(argc, argv, 2, 2, "rm",
1517                                 "<filename>", CHECK_FS_RW))
1518                 return;
1519
1520         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1521         if (retval) {
1522                 com_err(argv[0], retval, "while trying to resolve filename");
1523                 return;
1524         }
1525
1526         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1527                 return;
1528
1529         if (LINUX_S_ISDIR(inode.i_mode)) {
1530                 com_err(argv[0], 0, "file is a directory");
1531                 return;
1532         }
1533
1534         --inode.i_links_count;
1535         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1536                 return;
1537
1538         unlink_file_by_name(argv[1]);
1539         if (inode.i_links_count == 0)
1540                 kill_file_by_inode(inode_num);
1541 }
1542
1543 struct rd_struct {
1544         ext2_ino_t      parent;
1545         int             empty;
1546 };
1547
1548 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1549                       int       entry EXT2FS_ATTR((unused)),
1550                       struct ext2_dir_entry *dirent,
1551                       int       offset EXT2FS_ATTR((unused)),
1552                       int       blocksize EXT2FS_ATTR((unused)),
1553                       char      *buf EXT2FS_ATTR((unused)),
1554                       void      *private)
1555 {
1556         struct rd_struct *rds = (struct rd_struct *) private;
1557
1558         if (dirent->inode == 0)
1559                 return 0;
1560         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1561                 return 0;
1562         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1563             (dirent->name[1] == '.')) {
1564                 rds->parent = dirent->inode;
1565                 return 0;
1566         }
1567         rds->empty = 0;
1568         return 0;
1569 }
1570
1571 void do_rmdir(int argc, char *argv[])
1572 {
1573         int retval;
1574         ext2_ino_t inode_num;
1575         struct ext2_inode inode;
1576         struct rd_struct rds;
1577
1578         if (common_args_process(argc, argv, 2, 2, "rmdir",
1579                                 "<filename>", CHECK_FS_RW))
1580                 return;
1581
1582         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1583         if (retval) {
1584                 com_err(argv[0], retval, "while trying to resolve filename");
1585                 return;
1586         }
1587
1588         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1589                 return;
1590
1591         if (!LINUX_S_ISDIR(inode.i_mode)) {
1592                 com_err(argv[0], 0, "file is not a directory");
1593                 return;
1594         }
1595
1596         rds.parent = 0;
1597         rds.empty = 1;
1598
1599         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1600                                     0, rmdir_proc, &rds);
1601         if (retval) {
1602                 com_err(argv[0], retval, "while iterating over directory");
1603                 return;
1604         }
1605         if (rds.empty == 0) {
1606                 com_err(argv[0], 0, "directory not empty");
1607                 return;
1608         }
1609
1610         inode.i_links_count = 0;
1611         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1612                 return;
1613
1614         unlink_file_by_name(argv[1]);
1615         kill_file_by_inode(inode_num);
1616
1617         if (rds.parent) {
1618                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1619                         return;
1620                 if (inode.i_links_count > 1)
1621                         inode.i_links_count--;
1622                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1623                         return;
1624         }
1625 }
1626
1627 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1628                             char *argv[] EXT2FS_ATTR((unused)))
1629 {
1630         FILE *out = stdout;
1631
1632         if (current_fs)
1633                 fprintf(out, "Open mode: read-%s\n",
1634                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1635         fprintf(out, "Filesystem in use: %s\n",
1636                 current_fs ? current_fs->device_name : "--none--");
1637 }
1638
1639 void do_expand_dir(int argc, char *argv[])
1640 {
1641         ext2_ino_t inode;
1642         int retval;
1643
1644         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1645                 return;
1646
1647         retval = ext2fs_expand_dir(current_fs, inode);
1648         if (retval)
1649                 com_err("ext2fs_expand_dir", retval, 0);
1650         return;
1651 }
1652
1653 void do_features(int argc, char *argv[])
1654 {
1655         int     i;
1656
1657         if (check_fs_open(argv[0]))
1658                 return;
1659
1660         if ((argc != 1) && check_fs_read_write(argv[0]))
1661                 return;
1662         for (i=1; i < argc; i++) {
1663                 if (e2p_edit_feature(argv[i],
1664                                      &current_fs->super->s_feature_compat, 0))
1665                         com_err(argv[0], 0, "Unknown feature: %s\n",
1666                                 argv[i]);
1667                 else
1668                         ext2fs_mark_super_dirty(current_fs);
1669         }
1670         print_features(current_fs->super, stdout);
1671 }
1672
1673 void do_bmap(int argc, char *argv[])
1674 {
1675         ext2_ino_t      ino;
1676         blk_t           blk, pblk;
1677         int             err;
1678         errcode_t       errcode;
1679
1680         if (common_args_process(argc, argv, 3, 3, argv[0],
1681                                 "<file> logical_blk", 0))
1682                 return;
1683
1684         ino = string_to_inode(argv[1]);
1685         if (!ino)
1686                 return;
1687         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1688
1689         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1690         if (errcode) {
1691                 com_err("argv[0]", errcode,
1692                         "while mapping logical block %u\n", blk);
1693                 return;
1694         }
1695         printf("%u\n", pblk);
1696 }
1697
1698 void do_imap(int argc, char *argv[])
1699 {
1700         ext2_ino_t      ino;
1701         unsigned long   group, block, block_nr, offset;
1702
1703         if (common_args_process(argc, argv, 2, 2, argv[0],
1704                                 "<file>", 0))
1705                 return;
1706         ino = string_to_inode(argv[1]);
1707         if (!ino)
1708                 return;
1709
1710         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1711         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1712                 EXT2_INODE_SIZE(current_fs->super);
1713         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1714         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1715                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1716                         group);
1717                 return;
1718         }
1719         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1720                 block;
1721         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1722
1723         printf("Inode %d is part of block group %lu\n"
1724                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1725                block_nr, offset);
1726
1727 }
1728
1729 void do_set_current_time(int argc, char *argv[])
1730 {
1731         time_t now;
1732
1733         if (common_args_process(argc, argv, 2, 2, argv[0],
1734                                 "<time>", 0))
1735                 return;
1736
1737         now = string_to_time(argv[1]);
1738         if (now == ((time_t) -1)) {
1739                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1740                         argv[1]);
1741                 return;
1742
1743         } else {
1744                 printf("Setting current time to %s\n", time_to_string(now));
1745                 current_fs->now = now;
1746         }
1747 }
1748
1749 static int source_file(const char *cmd_file, int sci_idx)
1750 {
1751         FILE            *f;
1752         char            buf[256];
1753         char            *cp;
1754         int             exit_status = 0;
1755         int             retval;
1756
1757         if (strcmp(cmd_file, "-") == 0)
1758                 f = stdin;
1759         else {
1760                 f = fopen(cmd_file, "r");
1761                 if (!f) {
1762                         perror(cmd_file);
1763                         exit(1);
1764                 }
1765         }
1766         setbuf(stdout, NULL);
1767         setbuf(stderr, NULL);
1768         while (!feof(f)) {
1769                 if (fgets(buf, sizeof(buf), f) == NULL)
1770                         break;
1771                 cp = strchr(buf, '\n');
1772                 if (cp)
1773                         *cp = 0;
1774                 cp = strchr(buf, '\r');
1775                 if (cp)
1776                         *cp = 0;
1777                 printf("debugfs: %s\n", buf);
1778                 retval = ss_execute_line(sci_idx, buf);
1779                 if (retval) {
1780                         ss_perror(sci_idx, retval, buf);
1781                         exit_status++;
1782                 }
1783         }
1784         return exit_status;
1785 }
1786
1787 int main(int argc, char **argv)
1788 {
1789         int             retval;
1790         int             sci_idx;
1791         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1792         int             c;
1793         int             open_flags = 0;
1794         char            *request = 0;
1795         int             exit_status = 0;
1796         char            *cmd_file = 0;
1797         blk_t           superblock = 0;
1798         blk_t           blocksize = 0;
1799         int             catastrophic = 0;
1800         char            *data_filename = 0;
1801
1802         initialize_ext2_error_table();
1803         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1804                  E2FSPROGS_DATE);
1805
1806         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1807                 switch (c) {
1808                 case 'R':
1809                         request = optarg;
1810                         break;
1811                 case 'f':
1812                         cmd_file = optarg;
1813                         break;
1814                 case 'd':
1815                         data_filename = optarg;
1816                         break;
1817                 case 'i':
1818                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1819                         break;
1820                 case 'w':
1821                         open_flags |= EXT2_FLAG_RW;
1822                         break;
1823                 case 'b':
1824                         blocksize = parse_ulong(optarg, argv[0],
1825                                                 "block size", 0);
1826                         break;
1827                 case 's':
1828                         superblock = parse_ulong(optarg, argv[0],
1829                                                  "superblock number", 0);
1830                         break;
1831                 case 'c':
1832                         catastrophic = 1;
1833                         break;
1834                 case 'V':
1835                         /* Print version number and exit */
1836                         fprintf(stderr, "\tUsing %s\n",
1837                                 error_message(EXT2_ET_BASE));
1838                         exit(0);
1839                 default:
1840                         com_err(argv[0], 0, usage);
1841                         return 1;
1842                 }
1843         }
1844         if (optind < argc)
1845                 open_filesystem(argv[optind], open_flags,
1846                                 superblock, blocksize, catastrophic,
1847                                 data_filename);
1848
1849         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1850                                        &debug_cmds, &retval);
1851         if (retval) {
1852                 ss_perror(sci_idx, retval, "creating invocation");
1853                 exit(1);
1854         }
1855         ss_get_readline(sci_idx);
1856
1857         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1858         if (retval) {
1859                 ss_perror(sci_idx, retval, "adding standard requests");
1860                 exit (1);
1861         }
1862         if (request) {
1863                 retval = 0;
1864                 retval = ss_execute_line(sci_idx, request);
1865                 if (retval) {
1866                         ss_perror(sci_idx, retval, request);
1867                         exit_status++;
1868                 }
1869         } else if (cmd_file) {
1870                 exit_status = source_file(cmd_file, sci_idx);
1871         } else {
1872                 ss_listen(sci_idx);
1873         }
1874
1875         if (current_fs)
1876                 close_filesystem();
1877
1878         return exit_status;
1879 }