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 "../version.h"
  37
  38 extern ss_request_table debug_cmds;
  39
  40 ext2_filsys     current_fs = NULL;
  41 ext2_ino_t      root, cwd;
  42
  43 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  44                             blk_t blocksize, int catastrophic,
  45                             char *data_filename)
  46 {
  47         int     retval;
  48         io_channel data_io = 0;
  49
  50         if (superblock != 0 && blocksize == 0) {
  51                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  52                 current_fs = NULL;
  53                 return;
  54         }
  55
  56         if (data_filename) {
  57                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  58                         com_err(device, 0,
  59                                 "The -d option is only valid when reading an e2image file");
  60                         current_fs = NULL;
  61                         return;
  62                 }
  63                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  64                 if (retval) {
  65                         com_err(data_filename, 0, "while opening data source");
  66                         current_fs = NULL;
  67                         return;
  68                 }
  69         }
  70
  71         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  72                 com_err(device, 0,
  73                         "opening read-only because of catastrophic mode");
  74                 open_flags &= ~EXT2_FLAG_RW;
  75         }
  76
  77         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  78                              unix_io_manager, &current_fs);
  79         if (retval) {
  80                 com_err(device, retval, "while opening filesystem");
  81                 current_fs = NULL;
  82                 return;
  83         }
  84
  85         if (catastrophic)
  86                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  87         else {
  88                 retval = ext2fs_read_inode_bitmap(current_fs);
  89                 if (retval) {
  90                         com_err(device, retval, "while reading inode bitmap");
  91                         goto errout;
  92                 }
  93                 retval = ext2fs_read_block_bitmap(current_fs);
  94                 if (retval) {
  95                         com_err(device, retval, "while reading block bitmap");
  96                         goto errout;
  97                 }
  98         }
  99
 100         if (data_io) {
 101                 retval = ext2fs_set_data_io(current_fs, data_io);
 102                 if (retval) {
 103                         com_err(device, retval,
 104                                 "while setting data source");
 105                         goto errout;
 106                 }
 107         }
 108
 109         root = cwd = EXT2_ROOT_INO;
 110         return;
 111
 112 errout:
 113         retval = ext2fs_close(current_fs);
 114         if (retval)
 115                 com_err(device, retval, "while trying to close filesystem");
 116         current_fs = NULL;
 117 }
 118
 119 void do_open_filesys(int argc, char **argv)
 120 {
 121         const char *usage = "Usage: open [-s superblock] [-b blocksize] [-c] [-w] <device>";
 122         int     c, err;
 123         int     catastrophic = 0;
 124         blk_t   superblock = 0;
 125         blk_t   blocksize = 0;
 126         int     open_flags = 0;
 127         char    *data_filename;
 128
 129         reset_getopt();
 130         while ((c = getopt (argc, argv, "iwfcb:s:d:")) != EOF) {
 131                 switch (c) {
 132                 case 'i':
 133                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 134                         break;
 135                 case 'w':
 136                         open_flags |= EXT2_FLAG_RW;
 137                         break;
 138                 case 'f':
 139                         open_flags |= EXT2_FLAG_FORCE;
 140                         break;
 141                 case 'c':
 142                         catastrophic = 1;
 143                         break;
 144                 case 'd':
 145                         data_filename = optarg;
 146                         break;
 147                 case 'b':
 148                         blocksize = parse_ulong(optarg, argv[0],
 149                                                 "block size", &err);
 150                         if (err)
 151                                 return;
 152                         break;
 153                 case 's':
 154                         superblock = parse_ulong(optarg, argv[0],
 155                                                  "superblock number", &err);
 156                         if (err)
 157                                 return;
 158                         break;
 159                 default:
 160                         com_err(argv[0], 0, usage);
 161                         return;
 162                 }
 163         }
 164         if (optind != argc-1) {
 165                 com_err(argv[0], 0, usage);
 166                 return;
 167         }
 168         if (check_fs_not_open(argv[0]))
 169                 return;
 170         open_filesystem(argv[optind], open_flags,
 171                         superblock, blocksize, catastrophic,
 172                         data_filename);
 173 }
 174
 175 void do_lcd(int argc, char **argv)
 176 {
 177         if (common_args_process(argc, argv, 2, 2, "lcd",
 178                                 "<native dir>", 0))
 179                 return;
 180
 181         if (chdir(argv[1]) == -1) {
 182                 com_err(argv[0], errno,
 183                         "while trying to change native directory to %s",
 184                         argv[1]);
 185                 return;
 186         }
 187 }
 188
 189 static void close_filesystem(NOARGS)
 190 {
 191         int     retval;
 192
 193         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 194                 retval = ext2fs_write_inode_bitmap(current_fs);
 195                 if (retval)
 196                         com_err("ext2fs_write_inode_bitmap", retval, "");
 197         }
 198         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 199                 retval = ext2fs_write_block_bitmap(current_fs);
 200                 if (retval)
 201                         com_err("ext2fs_write_block_bitmap", retval, "");
 202         }
 203         retval = ext2fs_close(current_fs);
 204         if (retval)
 205                 com_err("ext2fs_close", retval, "");
 206         current_fs = NULL;
 207         return;
 208 }
 209
 210 void do_close_filesys(int argc, char **argv)
 211 {
 212         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 213                 return;
 214         close_filesystem();
 215 }
 216
 217 void do_init_filesys(int argc, char **argv)
 218 {
 219         struct ext2_super_block param;
 220         errcode_t       retval;
 221         int             err;
 222
 223         if (common_args_process(argc, argv, 3, 3, "initialize",
 224                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 225                 return;
 226
 227         memset(&param, 0, sizeof(struct ext2_super_block));
 228         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 229                                            "blocks count", &err);
 230         if (err)
 231                 return;
 232         retval = ext2fs_initialize(argv[1], 0, &param,
 233                                    unix_io_manager, &current_fs);
 234         if (retval) {
 235                 com_err(argv[1], retval, "while initializing filesystem");
 236                 current_fs = NULL;
 237                 return;
 238         }
 239         root = cwd = EXT2_ROOT_INO;
 240         return;
 241 }
 242
 243 static void print_features(struct ext2_super_block * s, FILE *f)
 244 {
 245         int     i, j, printed=0;
 246         __u32   *mask = &s->s_feature_compat, m;
 247
 248         fputs("Filesystem features:", f);
 249         for (i=0; i <3; i++,mask++) {
 250                 for (j=0,m=1; j < 32; j++, m<<=1) {
 251                         if (*mask & m) {
 252                                 fprintf(f, " %s", e2p_feature2string(i, m));
 253                                 printed++;
 254                         }
 255                 }
 256         }
 257         if (printed == 0)
 258                 fputs("(none)", f);
 259         fputs("\n", f);
 260 }
 261
 262 void do_show_super_stats(int argc, char *argv[])
 263 {
 264         dgrp_t  i;
 265         FILE    *out;
 266         struct ext2_group_desc *gdp;
 267         int     c, header_only = 0;
 268         int     numdirs = 0;
 269         const char *usage = "Usage: show_super [-h]";
 270
 271         reset_getopt();
 272         while ((c = getopt (argc, argv, "h")) != EOF) {
 273                 switch (c) {
 274                 case 'h':
 275                         header_only++;
 276                         break;
 277                 default:
 278                         com_err(argv[0], 0, usage);
 279                         return;
 280                 }
 281         }
 282         if (optind != argc) {
 283                 com_err(argv[0], 0, usage);
 284                 return;
 285         }
 286         if (check_fs_open(argv[0]))
 287                 return;
 288         out = open_pager();
 289
 290         list_super2(current_fs->super, out);
 291         for (i=0; i < current_fs->group_desc_count; i++)
 292                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 293         fprintf(out, "Directories:              %d\n", numdirs);
 294
 295         if (header_only) {
 296                 close_pager(out);
 297                 return;
 298         }
 299
 300         gdp = &current_fs->group_desc[0];
 301         for (i = 0; i < current_fs->group_desc_count; i++, gdp++)
 302                 fprintf(out, " Group %2d: block bitmap at %d, "
 303                         "inode bitmap at %d, "
 304                         "inode table at %d\n"
 305                         "           %d free %s, "
 306                         "%d free %s, "
 307                         "%d used %s\n",
 308                         i, gdp->bg_block_bitmap,
 309                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 310                         gdp->bg_free_blocks_count,
 311                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 312                         gdp->bg_free_inodes_count,
 313                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 314                         gdp->bg_used_dirs_count,
 315                         gdp->bg_used_dirs_count != 1 ? "directories"
 316                                 : "directory");
 317         close_pager(out);
 318 }
 319
 320 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 321                       char **argv EXT2FS_ATTR((unused)))
 322 {
 323         if (check_fs_open(argv[0]))
 324                 return;
 325         if (check_fs_read_write(argv[0]))
 326                 return;
 327
 328         if (argv[1] && !strcmp(argv[1], "-clean"))
 329                 current_fs->super->s_state |= EXT2_VALID_FS;
 330         else
 331                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 332         ext2fs_mark_super_dirty(current_fs);
 333 }
 334
 335 struct list_blocks_struct {
 336         FILE            *f;
 337         e2_blkcnt_t     total;
 338         blk_t           first_block, last_block;
 339         e2_blkcnt_t     first_bcnt, last_bcnt;
 340         e2_blkcnt_t     first;
 341 };
 342
 343 static void finish_range(struct list_blocks_struct *lb)
 344 {
 345         if (lb->first_block == 0)
 346                 return;
 347         if (lb->first)
 348                 lb->first = 0;
 349         else
 350                 fprintf(lb->f, ", ");
 351         if (lb->first_block == lb->last_block)
 352                 fprintf(lb->f, "(%lld):%d", lb->first_bcnt, lb->first_block);
 353         else
 354                 fprintf(lb->f, "(%lld-%lld):%d-%d", lb->first_bcnt,
 355                         lb->last_bcnt, lb->first_block, lb->last_block);
 356         lb->first_block = 0;
 357 }
 358
 359 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 360                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 361                             blk_t ref_block EXT2FS_ATTR((unused)),
 362                             int ref_offset EXT2FS_ATTR((unused)),
 363                             void *private)
 364 {
 365         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 366
 367         lb->total++;
 368         if (blockcnt >= 0) {
 369                 /*
 370                  * See if we can add on to the existing range (if it exists)
 371                  */
 372                 if (lb->first_block &&
 373                     (lb->last_block+1 == *blocknr) &&
 374                     (lb->last_bcnt+1 == blockcnt)) {
 375                         lb->last_block = *blocknr;
 376                         lb->last_bcnt = blockcnt;
 377                         return 0;
 378                 }
 379                 /*
 380                  * Start a new range.
 381                  */
 382                 finish_range(lb);
 383                 lb->first_block = lb->last_block = *blocknr;
 384                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 385                 return 0;
 386         }
 387         /*
 388          * Not a normal block.  Always force a new range.
 389          */
 390         finish_range(lb);
 391         if (lb->first)
 392                 lb->first = 0;
 393         else
 394                 fprintf(lb->f, ", ");
 395         if (blockcnt == -1)
 396                 fprintf(lb->f, "(IND):%d", *blocknr);
 397         else if (blockcnt == -2)
 398                 fprintf(lb->f, "(DIND):%d", *blocknr);
 399         else if (blockcnt == -3)
 400                 fprintf(lb->f, "(TIND):%d", *blocknr);
 401         return 0;
 402 }
 403
 404
 405 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 406 {
 407         struct list_blocks_struct lb;
 408
 409         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 410         lb.total = 0;
 411         lb.first_block = 0;
 412         lb.f = f;
 413         lb.first = 1;
 414         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 415                              list_blocks_proc, (void *)&lb);
 416         finish_range(&lb);
 417         if (lb.total)
 418                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 419         fprintf(f,"\n");
 420 }
 421
 422
 423 void internal_dump_inode(FILE *out, const char *prefix,
 424                          ext2_ino_t inode_num, struct ext2_inode *inode,
 425                          int do_dump_blocks)
 426 {
 427         const char *i_type;
 428         char frag, fsize;
 429         int os = current_fs->super->s_creator_os;
 430
 431         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 432         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 433         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 434         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 435         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 436         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 437         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 438         else i_type = "bad type";
 439         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 440         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 441                 prefix,
 442                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 443         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 444                 prefix, inode->i_uid, inode->i_gid);
 445         if (LINUX_S_ISREG(inode->i_mode)) {
 446                 __u64 i_size = (inode->i_size |
 447                                 ((unsigned long long)inode->i_size_high << 32));
 448
 449                 fprintf(out, "%lld\n", i_size);
 450         } else
 451                 fprintf(out, "%d\n", inode->i_size);
 452         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 453                 fprintf(out,
 454                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 455                         prefix,
 456                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 457                         inode->osd1.hurd1.h_i_translator);
 458         else
 459                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 460                         prefix,
 461                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 462         fprintf(out, "%sLinks: %d   Blockcount: %d\n",
 463                 prefix, inode->i_links_count, inode->i_blocks);
 464         switch (os) {
 465             case EXT2_OS_LINUX:
 466                 frag = inode->osd2.linux2.l_i_frag;
 467                 fsize = inode->osd2.linux2.l_i_fsize;
 468                 break;
 469             case EXT2_OS_HURD:
 470                 frag = inode->osd2.hurd2.h_i_frag;
 471                 fsize = inode->osd2.hurd2.h_i_fsize;
 472                 break;
 473             case EXT2_OS_MASIX:
 474                 frag = inode->osd2.masix2.m_i_frag;
 475                 fsize = inode->osd2.masix2.m_i_fsize;
 476                 break;
 477             default:
 478                 frag = fsize = 0;
 479         }
 480         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 481                 prefix, inode->i_faddr, frag, fsize);
 482         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 483                 time_to_string(inode->i_ctime));
 484         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 485                 time_to_string(inode->i_atime));
 486         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 487                 time_to_string(inode->i_mtime));
 488         if (inode->i_dtime)
 489           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 490                   time_to_string(inode->i_dtime));
 491         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 492                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 493                         (int) inode->i_size, (char *)inode->i_block);
 494         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 495                 int major, minor;
 496                 const char *devnote;
 497
 498                 if (inode->i_block[0]) {
 499                         major = (inode->i_block[0] >> 8) & 255;
 500                         minor = inode->i_block[0] & 255;
 501                         devnote = "";
 502                 } else {
 503                         major = (inode->i_block[1] & 0xfff00) >> 8;
 504                         minor = ((inode->i_block[1] & 0xff) |
 505                                  ((inode->i_block[1] >> 12) & 0xfff00));
 506                         devnote = "(New-style) ";
 507                 }
 508                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 509                         devnote, major, minor, major, minor);
 510         }
 511         else if (do_dump_blocks)
 512                 dump_blocks(out, prefix, inode_num);
 513 }
 514
 515 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode inode)
 516 {
 517         FILE    *out;
 518
 519         out = open_pager();
 520         internal_dump_inode(out, "", inode_num, &inode, 1);
 521         close_pager(out);
 522 }
 523
 524 void do_stat(int argc, char *argv[])
 525 {
 526         ext2_ino_t      inode;
 527         struct ext2_inode inode_buf;
 528
 529         if (common_inode_args_process(argc, argv, &inode, 0))
 530                 return;
 531
 532         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 533                 return;
 534
 535         dump_inode(inode,inode_buf);
 536         return;
 537 }
 538
 539 void do_chroot(int argc, char *argv[])
 540 {
 541         ext2_ino_t inode;
 542         int retval;
 543
 544         if (common_inode_args_process(argc, argv, &inode, 0))
 545                 return;
 546
 547         retval = ext2fs_check_directory(current_fs, inode);
 548         if (retval)  {
 549                 com_err(argv[1], retval, "");
 550                 return;
 551         }
 552         root = inode;
 553 }
 554
 555 void do_clri(int argc, char *argv[])
 556 {
 557         ext2_ino_t inode;
 558         struct ext2_inode inode_buf;
 559
 560         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 561                 return;
 562
 563         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 564                 return;
 565         memset(&inode_buf, 0, sizeof(inode_buf));
 566         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 567                 return;
 568 }
 569
 570 void do_freei(int argc, char *argv[])
 571 {
 572         ext2_ino_t inode;
 573
 574         if (common_inode_args_process(argc, argv, &inode,
 575                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 576                 return;
 577
 578         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 579                 com_err(argv[0], 0, "Warning: inode already clear");
 580         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 581         ext2fs_mark_ib_dirty(current_fs);
 582 }
 583
 584 void do_seti(int argc, char *argv[])
 585 {
 586         ext2_ino_t inode;
 587
 588         if (common_inode_args_process(argc, argv, &inode,
 589                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 590                 return;
 591
 592         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 593                 com_err(argv[0], 0, "Warning: inode already set");
 594         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 595         ext2fs_mark_ib_dirty(current_fs);
 596 }
 597
 598 void do_testi(int argc, char *argv[])
 599 {
 600         ext2_ino_t inode;
 601
 602         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 603                 return;
 604
 605         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 606                 printf("Inode %u is marked in use\n", inode);
 607         else
 608                 printf("Inode %u is not in use\n", inode);
 609 }
 610
 611 void do_freeb(int argc, char *argv[])
 612 {
 613         blk_t block;
 614         int count = 1;
 615
 616         if (common_block_args_process(argc, argv, &block, &count))
 617                 return;
 618         if (check_fs_read_write(argv[0]))
 619                 return;
 620         while (count-- > 0) {
 621                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 622                         com_err(argv[0], 0, "Warning: block %d already clear",
 623                                 block);
 624                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 625                 block++;
 626         }
 627         ext2fs_mark_bb_dirty(current_fs);
 628 }
 629
 630 void do_setb(int argc, char *argv[])
 631 {
 632         blk_t block;
 633         int count = 1;
 634
 635         if (common_block_args_process(argc, argv, &block, &count))
 636                 return;
 637         if (check_fs_read_write(argv[0]))
 638                 return;
 639         while (count-- > 0) {
 640                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 641                         com_err(argv[0], 0, "Warning: block %d already set",
 642                                 block);
 643                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 644                 block++;
 645         }
 646         ext2fs_mark_bb_dirty(current_fs);
 647 }
 648
 649 void do_testb(int argc, char *argv[])
 650 {
 651         blk_t block;
 652         int count = 1;
 653
 654         if (common_block_args_process(argc, argv, &block, &count))
 655                 return;
 656         while (count-- > 0) {
 657                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 658                         printf("Block %d marked in use\n", block);
 659                 else
 660                         printf("Block %d not in use\n", block);
 661                 block++;
 662         }
 663 }
 664
 665 static void modify_u8(char *com, const char *prompt,
 666                       const char *format, __u8 *val)
 667 {
 668         char buf[200];
 669         unsigned long v;
 670         char *tmp;
 671
 672         sprintf(buf, format, *val);
 673         printf("%30s    [%s] ", prompt, buf);
 674         fgets(buf, sizeof(buf), stdin);
 675         if (buf[strlen (buf) - 1] == '\n')
 676                 buf[strlen (buf) - 1] = '\0';
 677         if (!buf[0])
 678                 return;
 679         v = strtoul(buf, &tmp, 0);
 680         if (*tmp)
 681                 com_err(com, 0, "Bad value - %s", buf);
 682         else
 683                 *val = v;
 684 }
 685
 686 static void modify_u16(char *com, const char *prompt,
 687                        const char *format, __u16 *val)
 688 {
 689         char buf[200];
 690         unsigned long v;
 691         char *tmp;
 692
 693         sprintf(buf, format, *val);
 694         printf("%30s    [%s] ", prompt, buf);
 695         fgets(buf, sizeof(buf), stdin);
 696         if (buf[strlen (buf) - 1] == '\n')
 697                 buf[strlen (buf) - 1] = '\0';
 698         if (!buf[0])
 699                 return;
 700         v = strtoul(buf, &tmp, 0);
 701         if (*tmp)
 702                 com_err(com, 0, "Bad value - %s", buf);
 703         else
 704                 *val = v;
 705 }
 706
 707 static void modify_u32(char *com, const char *prompt,
 708                        const char *format, __u32 *val)
 709 {
 710         char buf[200];
 711         unsigned long v;
 712         char *tmp;
 713
 714         sprintf(buf, format, *val);
 715         printf("%30s    [%s] ", prompt, buf);
 716         fgets(buf, sizeof(buf), stdin);
 717         if (buf[strlen (buf) - 1] == '\n')
 718                 buf[strlen (buf) - 1] = '\0';
 719         if (!buf[0])
 720                 return;
 721         v = strtoul(buf, &tmp, 0);
 722         if (*tmp)
 723                 com_err(com, 0, "Bad value - %s", buf);
 724         else
 725                 *val = v;
 726 }
 727
 728
 729 void do_modify_inode(int argc, char *argv[])
 730 {
 731         struct ext2_inode inode;
 732         ext2_ino_t      inode_num;
 733         int             i;
 734         unsigned char   *frag, *fsize;
 735         char            buf[80];
 736         int             os;
 737         const char      *hex_format = "0x%x";
 738         const char      *octal_format = "0%o";
 739         const char      *decimal_format = "%d";
 740
 741         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 742                 return;
 743
 744         os = current_fs->super->s_creator_os;
 745
 746         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 747                 return;
 748
 749         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 750         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 751         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 752         modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
 753         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 754         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 755         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 756         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 757         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 758         modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
 759         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 760         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 761 #if 0
 762         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 763 #endif
 764         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 765         if (LINUX_S_ISDIR(inode.i_mode))
 766                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 767         else
 768                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 769
 770         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 771                 modify_u32(argv[0], "Translator Block",
 772                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 773
 774         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 775         switch (os) {
 776             case EXT2_OS_LINUX:
 777                 frag = &inode.osd2.linux2.l_i_frag;
 778                 fsize = &inode.osd2.linux2.l_i_fsize;
 779                 break;
 780             case EXT2_OS_HURD:
 781                 frag = &inode.osd2.hurd2.h_i_frag;
 782                 fsize = &inode.osd2.hurd2.h_i_fsize;
 783                 break;
 784             case EXT2_OS_MASIX:
 785                 frag = &inode.osd2.masix2.m_i_frag;
 786                 fsize = &inode.osd2.masix2.m_i_fsize;
 787                 break;
 788             default:
 789                 frag = fsize = 0;
 790         }
 791         if (frag)
 792                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 793         if (fsize)
 794                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 795
 796         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 797                 sprintf(buf, "Direct Block #%d", i);
 798                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 799         }
 800         modify_u32(argv[0], "Indirect Block", decimal_format,
 801                     &inode.i_block[EXT2_IND_BLOCK]);
 802         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 803                     &inode.i_block[EXT2_DIND_BLOCK]);
 804         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 805                     &inode.i_block[EXT2_TIND_BLOCK]);
 806         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 807                 return;
 808 }
 809
 810 void do_change_working_dir(int argc, char *argv[])
 811 {
 812         ext2_ino_t      inode;
 813         int             retval;
 814
 815         if (common_inode_args_process(argc, argv, &inode, 0))
 816                 return;
 817
 818         retval = ext2fs_check_directory(current_fs, inode);
 819         if (retval) {
 820                 com_err(argv[1], retval, "");
 821                 return;
 822         }
 823         cwd = inode;
 824         return;
 825 }
 826
 827 void do_print_working_directory(int argc, char *argv[])
 828 {
 829         int     retval;
 830         char    *pathname = NULL;
 831
 832         if (common_args_process(argc, argv, 1, 1,
 833                                 "print_working_directory", "", 0))
 834                 return;
 835
 836         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 837         if (retval) {
 838                 com_err(argv[0], retval,
 839                         "while trying to get pathname of cwd");
 840         }
 841         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 842         free(pathname);
 843         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 844         if (retval) {
 845                 com_err(argv[0], retval,
 846                         "while trying to get pathname of root");
 847         }
 848         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 849         free(pathname);
 850         return;
 851 }
 852
 853 /*
 854  * Given a mode, return the ext2 file type
 855  */
 856 static int ext2_file_type(unsigned int mode)
 857 {
 858         if (LINUX_S_ISREG(mode))
 859                 return EXT2_FT_REG_FILE;
 860
 861         if (LINUX_S_ISDIR(mode))
 862                 return EXT2_FT_DIR;
 863
 864         if (LINUX_S_ISCHR(mode))
 865                 return EXT2_FT_CHRDEV;
 866
 867         if (LINUX_S_ISBLK(mode))
 868                 return EXT2_FT_BLKDEV;
 869
 870         if (LINUX_S_ISLNK(mode))
 871                 return EXT2_FT_SYMLINK;
 872
 873         if (LINUX_S_ISFIFO(mode))
 874                 return EXT2_FT_FIFO;
 875
 876         if (LINUX_S_ISSOCK(mode))
 877                 return EXT2_FT_SOCK;
 878
 879         return 0;
 880 }
 881
 882 static void make_link(char *sourcename, char *destname)
 883 {
 884         ext2_ino_t      ino;
 885         struct ext2_inode inode;
 886         int             retval;
 887         ext2_ino_t      dir;
 888         char            *dest, *cp, *basename;
 889
 890         /*
 891          * Get the source inode
 892          */
 893         ino = string_to_inode(sourcename);
 894         if (!ino)
 895                 return;
 896         basename = strrchr(sourcename, '/');
 897         if (basename)
 898                 basename++;
 899         else
 900                 basename = sourcename;
 901         /*
 902          * Figure out the destination.  First see if it exists and is
 903          * a directory.
 904          */
 905         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
 906                 dest = basename;
 907         else {
 908                 /*
 909                  * OK, it doesn't exist.  See if it is
 910                  * '<dir>/basename' or 'basename'
 911                  */
 912                 cp = strrchr(destname, '/');
 913                 if (cp) {
 914                         *cp = 0;
 915                         dir = string_to_inode(destname);
 916                         if (!dir)
 917                                 return;
 918                         dest = cp+1;
 919                 } else {
 920                         dir = cwd;
 921                         dest = destname;
 922                 }
 923         }
 924
 925         if (debugfs_read_inode(ino, &inode, sourcename))
 926                 return;
 927
 928         retval = ext2fs_link(current_fs, dir, dest, ino,
 929                              ext2_file_type(inode.i_mode));
 930         if (retval)
 931                 com_err("make_link", retval, "");
 932         return;
 933 }
 934
 935
 936 void do_link(int argc, char *argv[])
 937 {
 938         if (common_args_process(argc, argv, 3, 3, "link",
 939                                 "<source file> <dest_name>", CHECK_FS_RW))
 940                 return;
 941
 942         make_link(argv[1], argv[2]);
 943 }
 944
 945 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
 946                             int blockcnt EXT2FS_ATTR((unused)),
 947                             void *private EXT2FS_ATTR((unused)))
 948 {
 949         blk_t   block;
 950
 951         block = *blocknr;
 952         ext2fs_block_alloc_stats(fs, block, +1);
 953         return 0;
 954 }
 955
 956 void do_undel(int argc, char *argv[])
 957 {
 958         ext2_ino_t      ino;
 959         struct ext2_inode inode;
 960
 961         if (common_args_process(argc, argv, 3, 3, "undelete",
 962                                 "<inode_num> <dest_name>",
 963                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
 964                 return;
 965
 966         ino = string_to_inode(argv[1]);
 967         if (!ino)
 968                 return;
 969
 970         if (debugfs_read_inode(ino, &inode, argv[1]))
 971                 return;
 972
 973         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
 974                 com_err(argv[1], 0, "Inode is not marked as deleted");
 975                 return;
 976         }
 977
 978         /*
 979          * XXX this function doesn't handle changing the links count on the
 980          * parent directory when undeleting a directory.
 981          */
 982         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
 983         inode.i_dtime = 0;
 984
 985         if (debugfs_write_inode(ino, &inode, argv[0]))
 986                 return;
 987
 988         ext2fs_block_iterate(current_fs, ino, 0, NULL,
 989                              mark_blocks_proc, NULL);
 990
 991         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
 992
 993         make_link(argv[1], argv[2]);
 994 }
 995
 996 static void unlink_file_by_name(char *filename)
 997 {
 998         int             retval;
 999         ext2_ino_t      dir;
1000         char            *basename;
1001
1002         basename = strrchr(filename, '/');
1003         if (basename) {
1004                 *basename++ = '\0';
1005                 dir = string_to_inode(filename);
1006                 if (!dir)
1007                         return;
1008         } else {
1009                 dir = cwd;
1010                 basename = filename;
1011         }
1012         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1013         if (retval)
1014                 com_err("unlink_file_by_name", retval, "");
1015         return;
1016 }
1017
1018 void do_unlink(int argc, char *argv[])
1019 {
1020         if (common_args_process(argc, argv, 2, 2, "link",
1021                                 "<pathname>", CHECK_FS_RW))
1022                 return;
1023
1024         unlink_file_by_name(argv[1]);
1025 }
1026
1027 void do_find_free_block(int argc, char *argv[])
1028 {
1029         blk_t   free_blk, goal;
1030         int             count;
1031         errcode_t       retval;
1032         char            *tmp;
1033
1034         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1035                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1036                 return;
1037         }
1038         if (check_fs_open(argv[0]))
1039                 return;
1040
1041         if (argc > 1) {
1042                 count = strtol(argv[1],&tmp,0);
1043                 if (*tmp) {
1044                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1045                         return;
1046                 }
1047         } else
1048                 count = 1;
1049
1050         if (argc > 2) {
1051                 goal = strtol(argv[2], &tmp, 0);
1052                 if (*tmp) {
1053                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1054                         return;
1055                 }
1056         }
1057         else
1058                 goal = current_fs->super->s_first_data_block;
1059
1060         printf("Free blocks found: ");
1061         free_blk = goal - 1;
1062         while (count-- > 0) {
1063                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1064                                           &free_blk);
1065                 if (retval) {
1066                         com_err("ext2fs_new_block", retval, "");
1067                         return;
1068                 } else
1069                         printf("%d ", free_blk);
1070         }
1071         printf("\n");
1072 }
1073
1074 void do_find_free_inode(int argc, char *argv[])
1075 {
1076         ext2_ino_t      free_inode, dir;
1077         int             mode;
1078         int             retval;
1079         char            *tmp;
1080
1081         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1082                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1083                 return;
1084         }
1085         if (check_fs_open(argv[0]))
1086                 return;
1087
1088         if (argc > 1) {
1089                 dir = strtol(argv[1], &tmp, 0);
1090                 if (*tmp) {
1091                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1092                         return;
1093                 }
1094         }
1095         else
1096                 dir = root;
1097         if (argc > 2) {
1098                 mode = strtol(argv[2], &tmp, 0);
1099                 if (*tmp) {
1100                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1101                         return;
1102                 }
1103         } else
1104                 mode = 010755;
1105
1106         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1107         if (retval)
1108                 com_err("ext2fs_new_inode", retval, "");
1109         else
1110                 printf("Free inode found: %u\n", free_inode);
1111 }
1112
1113 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1114 {
1115         ext2_file_t     e2_file;
1116         errcode_t       retval;
1117         int             got;
1118         unsigned int    written;
1119         char            buf[8192];
1120         char            *ptr;
1121
1122         retval = ext2fs_file_open(current_fs, newfile,
1123                                   EXT2_FILE_WRITE, &e2_file);
1124         if (retval)
1125                 return retval;
1126
1127         while (1) {
1128                 got = read(fd, buf, sizeof(buf));
1129                 if (got == 0)
1130                         break;
1131                 if (got < 0) {
1132                         retval = errno;
1133                         goto fail;
1134                 }
1135                 ptr = buf;
1136                 while (got > 0) {
1137                         retval = ext2fs_file_write(e2_file, ptr,
1138                                                    got, &written);
1139                         if (retval)
1140                                 goto fail;
1141
1142                         got -= written;
1143                         ptr += written;
1144                 }
1145         }
1146         retval = ext2fs_file_close(e2_file);
1147         return retval;
1148
1149 fail:
1150         (void) ext2fs_file_close(e2_file);
1151         return retval;
1152 }
1153
1154
1155 void do_write(int argc, char *argv[])
1156 {
1157         int             fd;
1158         struct stat     statbuf;
1159         ext2_ino_t      newfile;
1160         errcode_t       retval;
1161         struct ext2_inode inode;
1162
1163         if (common_args_process(argc, argv, 3, 3, "write",
1164                                 "<native file> <new file>", CHECK_FS_RW))
1165                 return;
1166
1167         fd = open(argv[1], O_RDONLY);
1168         if (fd < 0) {
1169                 com_err(argv[1], errno, "");
1170                 return;
1171         }
1172         if (fstat(fd, &statbuf) < 0) {
1173                 com_err(argv[1], errno, "");
1174                 close(fd);
1175                 return;
1176         }
1177
1178         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1179         if (retval == 0) {
1180                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1181                 close(fd);
1182                 return;
1183         }
1184
1185         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1186         if (retval) {
1187                 com_err(argv[0], retval, "");
1188                 close(fd);
1189                 return;
1190         }
1191         printf("Allocated inode: %u\n", newfile);
1192         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1193                              EXT2_FT_REG_FILE);
1194         if (retval == EXT2_ET_DIR_NO_SPACE) {
1195                 retval = ext2fs_expand_dir(current_fs, cwd);
1196                 if (retval) {
1197                         com_err(argv[0], retval, "while expanding directory");
1198                         return;
1199                 }
1200                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1201                                      EXT2_FT_REG_FILE);
1202         }
1203         if (retval) {
1204                 com_err(argv[2], retval, "");
1205                 close(fd);
1206                 return;
1207         }
1208         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1209                 com_err(argv[0], 0, "Warning: inode already set");
1210         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1211         memset(&inode, 0, sizeof(inode));
1212         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1213         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1214         inode.i_links_count = 1;
1215         inode.i_size = statbuf.st_size;
1216         if (debugfs_write_inode(newfile, &inode, argv[0])) {
1217                 close(fd);
1218                 return;
1219         }
1220         if (LINUX_S_ISREG(inode.i_mode)) {
1221                 retval = copy_file(fd, newfile);
1222                 if (retval)
1223                         com_err("copy_file", retval, "");
1224         }
1225         close(fd);
1226 }
1227
1228 void do_mknod(int argc, char *argv[])
1229 {
1230         unsigned long   mode, major, minor;
1231         ext2_ino_t      newfile;
1232         errcode_t       retval;
1233         struct ext2_inode inode;
1234         int             filetype, nr;
1235
1236         if (check_fs_open(argv[0]))
1237                 return;
1238         if (argc < 3 || argv[2][1]) {
1239         usage:
1240                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1241                 return;
1242         }
1243         mode = minor = major = 0;
1244         switch (argv[2][0]) {
1245                 case 'p':
1246                         mode = LINUX_S_IFIFO;
1247                         filetype = EXT2_FT_FIFO;
1248                         nr = 3;
1249                         break;
1250                 case 'c':
1251                         mode = LINUX_S_IFCHR;
1252                         filetype = EXT2_FT_CHRDEV;
1253                         nr = 5;
1254                         break;
1255                 case 'b':
1256                         mode = LINUX_S_IFBLK;
1257                         filetype = EXT2_FT_BLKDEV;
1258                         nr = 5;
1259                         break;
1260                 default:
1261                         filetype = 0;
1262                         nr = 0;
1263         }
1264         if (nr == 5) {
1265                 major = strtoul(argv[3], argv+3, 0);
1266                 minor = strtoul(argv[4], argv+4, 0);
1267                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1268                         nr = 0;
1269         }
1270         if (argc != nr)
1271                 goto usage;
1272         if (check_fs_read_write(argv[0]))
1273                 return;
1274         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1275         if (retval) {
1276                 com_err(argv[0], retval, "");
1277                 return;
1278         }
1279         printf("Allocated inode: %u\n", newfile);
1280         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1281         if (retval == EXT2_ET_DIR_NO_SPACE) {
1282                 retval = ext2fs_expand_dir(current_fs, cwd);
1283                 if (retval) {
1284                         com_err(argv[0], retval, "while expanding directory");
1285                         return;
1286                 }
1287                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1288                                      filetype);
1289         }
1290         if (retval) {
1291                 com_err(argv[1], retval, "");
1292                 return;
1293         }
1294         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1295                 com_err(argv[0], 0, "Warning: inode already set");
1296         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1297         ext2fs_mark_ib_dirty(current_fs);
1298         memset(&inode, 0, sizeof(inode));
1299         inode.i_mode = mode;
1300         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1301         if ((major < 256) && (minor < 256)) {
1302                 inode.i_block[0] = major*256+minor;
1303                 inode.i_block[1] = 0;
1304         } else {
1305                 inode.i_block[0] = 0;
1306                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1307         }
1308         inode.i_links_count = 1;
1309         if (debugfs_write_inode(newfile, &inode, argv[0]))
1310                 return;
1311 }
1312
1313 void do_mkdir(int argc, char *argv[])
1314 {
1315         char    *cp;
1316         ext2_ino_t      parent;
1317         char    *name;
1318         errcode_t retval;
1319
1320         if (common_args_process(argc, argv, 2, 2, "mkdir",
1321                                 "<filename>", CHECK_FS_RW))
1322                 return;
1323
1324         cp = strrchr(argv[1], '/');
1325         if (cp) {
1326                 *cp = 0;
1327                 parent = string_to_inode(argv[1]);
1328                 if (!parent) {
1329                         com_err(argv[1], ENOENT, "");
1330                         return;
1331                 }
1332                 name = cp+1;
1333         } else {
1334                 parent = cwd;
1335                 name = argv[1];
1336         }
1337
1338 try_again:
1339         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1340         if (retval == EXT2_ET_DIR_NO_SPACE) {
1341                 retval = ext2fs_expand_dir(current_fs, parent);
1342                 if (retval) {
1343                         com_err("argv[0]", retval, "while expanding directory");
1344                         return;
1345                 }
1346                 goto try_again;
1347         }
1348         if (retval) {
1349                 com_err("ext2fs_mkdir", retval, "");
1350                 return;
1351         }
1352
1353 }
1354
1355 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1356                                int blockcnt EXT2FS_ATTR((unused)),
1357                                void *private EXT2FS_ATTR((unused)))
1358 {
1359         blk_t   block;
1360
1361         block = *blocknr;
1362         ext2fs_block_alloc_stats(fs, block, -1);
1363         return 0;
1364 }
1365
1366 static void kill_file_by_inode(ext2_ino_t inode)
1367 {
1368         struct ext2_inode inode_buf;
1369
1370         if (debugfs_read_inode(inode, &inode_buf, 0))
1371                 return;
1372         inode_buf.i_dtime = time(NULL);
1373         if (debugfs_write_inode(inode, &inode_buf, 0))
1374                 return;
1375
1376         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1377                              release_blocks_proc, NULL);
1378         printf("\n");
1379         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1380                                   LINUX_S_ISDIR(inode_buf.i_mode));
1381 }
1382
1383
1384 void do_kill_file(int argc, char *argv[])
1385 {
1386         ext2_ino_t inode_num;
1387
1388         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1389                 return;
1390
1391         kill_file_by_inode(inode_num);
1392 }
1393
1394 void do_rm(int argc, char *argv[])
1395 {
1396         int retval;
1397         ext2_ino_t inode_num;
1398         struct ext2_inode inode;
1399
1400         if (common_args_process(argc, argv, 2, 2, "rm",
1401                                 "<filename>", CHECK_FS_RW))
1402                 return;
1403
1404         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1405         if (retval) {
1406                 com_err(argv[0], retval, "while trying to resolve filename");
1407                 return;
1408         }
1409
1410         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1411                 return;
1412
1413         if (LINUX_S_ISDIR(inode.i_mode)) {
1414                 com_err(argv[0], 0, "file is a directory");
1415                 return;
1416         }
1417
1418         --inode.i_links_count;
1419         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1420                 return;
1421
1422         unlink_file_by_name(argv[1]);
1423         if (inode.i_links_count == 0)
1424                 kill_file_by_inode(inode_num);
1425 }
1426
1427 struct rd_struct {
1428         ext2_ino_t      parent;
1429         int             empty;
1430 };
1431
1432 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1433                       int       entry EXT2FS_ATTR((unused)),
1434                       struct ext2_dir_entry *dirent,
1435                       int       offset EXT2FS_ATTR((unused)),
1436                       int       blocksize EXT2FS_ATTR((unused)),
1437                       char      *buf EXT2FS_ATTR((unused)),
1438                       void      *private)
1439 {
1440         struct rd_struct *rds = (struct rd_struct *) private;
1441
1442         if (dirent->inode == 0)
1443                 return 0;
1444         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1445                 return 0;
1446         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1447             (dirent->name[1] == '.')) {
1448                 rds->parent = dirent->inode;
1449                 return 0;
1450         }
1451         rds->empty = 0;
1452         return 0;
1453 }
1454
1455 void do_rmdir(int argc, char *argv[])
1456 {
1457         int retval;
1458         ext2_ino_t inode_num;
1459         struct ext2_inode inode;
1460         struct rd_struct rds;
1461
1462         if (common_args_process(argc, argv, 2, 2, "rmdir",
1463                                 "<filename>", CHECK_FS_RW))
1464                 return;
1465
1466         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1467         if (retval) {
1468                 com_err(argv[0], retval, "while trying to resolve filename");
1469                 return;
1470         }
1471
1472         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1473                 return;
1474
1475         if (!LINUX_S_ISDIR(inode.i_mode)) {
1476                 com_err(argv[0], 0, "file is not a directory");
1477                 return;
1478         }
1479
1480         rds.parent = 0;
1481         rds.empty = 1;
1482
1483         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1484                                     0, rmdir_proc, &rds);
1485         if (retval) {
1486                 com_err(argv[0], retval, "while iterating over directory");
1487                 return;
1488         }
1489         if (rds.empty == 0) {
1490                 com_err(argv[0], 0, "directory not empty");
1491                 return;
1492         }
1493
1494         inode.i_links_count = 0;
1495         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1496                 return;
1497
1498         unlink_file_by_name(argv[1]);
1499         kill_file_by_inode(inode_num);
1500
1501         if (rds.parent) {
1502                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1503                         return;
1504                 if (inode.i_links_count > 1)
1505                         inode.i_links_count--;
1506                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1507                         return;
1508         }
1509 }
1510
1511 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1512                             char *argv[] EXT2FS_ATTR((unused)))
1513 {
1514         FILE *out = stdout;
1515
1516         if (current_fs)
1517                 fprintf(out, "Open mode: read-%s\n",
1518                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1519         fprintf(out, "Filesystem in use: %s\n",
1520                 current_fs ? current_fs->device_name : "--none--");
1521 }
1522
1523 void do_expand_dir(int argc, char *argv[])
1524 {
1525         ext2_ino_t inode;
1526         int retval;
1527
1528         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1529                 return;
1530
1531         retval = ext2fs_expand_dir(current_fs, inode);
1532         if (retval)
1533                 com_err("ext2fs_expand_dir", retval, "");
1534         return;
1535 }
1536
1537 void do_features(int argc, char *argv[])
1538 {
1539         int     i;
1540
1541         if (check_fs_open(argv[0]))
1542                 return;
1543
1544         if ((argc != 1) && check_fs_read_write(argv[0]))
1545                 return;
1546         for (i=1; i < argc; i++) {
1547                 if (e2p_edit_feature(argv[i],
1548                                      &current_fs->super->s_feature_compat, 0))
1549                         com_err(argv[0], 0, "Unknown feature: %s\n",
1550                                 argv[i]);
1551                 else
1552                         ext2fs_mark_super_dirty(current_fs);
1553         }
1554         print_features(current_fs->super, stdout);
1555 }
1556
1557 void do_bmap(int argc, char *argv[])
1558 {
1559         ext2_ino_t      ino;
1560         blk_t           blk, pblk;
1561         int             err;
1562         errcode_t       errcode;
1563
1564         if (common_args_process(argc, argv, 3, 3, argv[0],
1565                                 "<file> logical_blk", 0))
1566                 return;
1567
1568         ino = string_to_inode(argv[1]);
1569         if (!ino)
1570                 return;
1571         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1572
1573         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1574         if (errcode) {
1575                 com_err("argv[0]", errcode,
1576                         "while mapping logical block %d\n", blk);
1577                 return;
1578         }
1579         printf("%d\n", pblk);
1580 }
1581
1582 void do_imap(int argc, char *argv[])
1583 {
1584         ext2_ino_t      ino;
1585         unsigned long   group, block, block_nr, offset;
1586
1587         if (common_args_process(argc, argv, 2, 2, argv[0],
1588                                 "<file>", 0))
1589                 return;
1590         ino = string_to_inode(argv[1]);
1591         if (!ino)
1592                 return;
1593
1594         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1595         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1596                 EXT2_INODE_SIZE(current_fs->super);
1597         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1598         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1599                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1600                         group);
1601                 return;
1602         }
1603         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1604                 block;
1605         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1606
1607         printf("Inode %d is part of block group %lu\n"
1608                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1609                block_nr, offset);
1610
1611 }
1612
1613
1614
1615 static int source_file(const char *cmd_file, int sci_idx)
1616 {
1617         FILE            *f;
1618         char            buf[256];
1619         char            *cp;
1620         int             exit_status = 0;
1621         int             retval;
1622
1623         if (strcmp(cmd_file, "-") == 0)
1624                 f = stdin;
1625         else {
1626                 f = fopen(cmd_file, "r");
1627                 if (!f) {
1628                         perror(cmd_file);
1629                         exit(1);
1630                 }
1631         }
1632         setbuf(stdout, NULL);
1633         setbuf(stderr, NULL);
1634         while (!feof(f)) {
1635                 if (fgets(buf, sizeof(buf), f) == NULL)
1636                         break;
1637                 cp = strchr(buf, '\n');
1638                 if (cp)
1639                         *cp = 0;
1640                 cp = strchr(buf, '\r');
1641                 if (cp)
1642                         *cp = 0;
1643                 printf("debugfs: %s\n", buf);
1644                 retval = ss_execute_line(sci_idx, buf);
1645                 if (retval) {
1646                         ss_perror(sci_idx, retval, buf);
1647                         exit_status++;
1648                 }
1649         }
1650         return exit_status;
1651 }
1652
1653 int main(int argc, char **argv)
1654 {
1655         int             retval;
1656         int             sci_idx;
1657         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1658         int             c;
1659         int             open_flags = 0;
1660         char            *request = 0;
1661         int             exit_status = 0;
1662         char            *cmd_file = 0;
1663         blk_t           superblock = 0;
1664         blk_t           blocksize = 0;
1665         int             catastrophic = 0;
1666         char            *data_filename = 0;
1667
1668         initialize_ext2_error_table();
1669         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1670                  E2FSPROGS_DATE);
1671
1672         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1673                 switch (c) {
1674                 case 'R':
1675                         request = optarg;
1676                         break;
1677                 case 'f':
1678                         cmd_file = optarg;
1679                         break;
1680                 case 'd':
1681                         data_filename = optarg;
1682                         break;
1683                 case 'i':
1684                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1685                         break;
1686                 case 'w':
1687                         open_flags |= EXT2_FLAG_RW;
1688                         break;
1689                 case 'b':
1690                         blocksize = parse_ulong(optarg, argv[0],
1691                                                 "block size", 0);
1692                         break;
1693                 case 's':
1694                         superblock = parse_ulong(optarg, argv[0],
1695                                                  "superblock number", 0);
1696                         break;
1697                 case 'c':
1698                         catastrophic = 1;
1699                         break;
1700                 case 'V':
1701                         /* Print version number and exit */
1702                         fprintf(stderr, "\tUsing %s\n",
1703                                 error_message(EXT2_ET_BASE));
1704                         exit(0);
1705                 default:
1706                         com_err(argv[0], 0, usage);
1707                         return 1;
1708                 }
1709         }
1710         if (optind < argc)
1711                 open_filesystem(argv[optind], open_flags,
1712                                 superblock, blocksize, catastrophic,
1713                                 data_filename);
1714
1715         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1716                                        &debug_cmds, &retval);
1717         if (retval) {
1718                 ss_perror(sci_idx, retval, "creating invocation");
1719                 exit(1);
1720         }
1721         ss_get_readline(sci_idx);
1722
1723         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1724         if (retval) {
1725                 ss_perror(sci_idx, retval, "adding standard requests");
1726                 exit (1);
1727         }
1728         if (request) {
1729                 retval = 0;
1730                 retval = ss_execute_line(sci_idx, request);
1731                 if (retval) {
1732                         ss_perror(sci_idx, retval, request);
1733                         exit_status++;
1734                 }
1735         } else if (cmd_file) {
1736                 exit_status = source_file(cmd_file, sci_idx);
1737         } else {
1738                 ss_listen(sci_idx);
1739         }
1740
1741         if (current_fs)
1742                 close_filesystem();
1743
1744         return exit_status;
1745 }