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_OPTRESET
  24 extern int optreset;            /* defined by BSD, but not others */
  25 #endif
  26 #ifdef HAVE_ERRNO_H
  27 #include <errno.h>
  28 #endif
  29 #include <fcntl.h>
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32
  33 #include "et/com_err.h"
  34 #include "ss/ss.h"
  35 #include "debugfs.h"
  36 #include "uuid/uuid.h"
  37
  38 #include "../version.h"
  39
  40 extern ss_request_table debug_cmds;
  41
  42 ext2_filsys current_fs = NULL;
  43 ino_t   root, cwd;
  44
  45 static void open_filesystem(char *device, int open_flags)
  46 {
  47         int     retval;
  48
  49         retval = ext2fs_open(device, open_flags, 0, 0,
  50                              unix_io_manager, &current_fs);
  51         if (retval) {
  52                 com_err(device, retval, "while opening filesystem");
  53                 current_fs = NULL;
  54                 return;
  55         }
  56         retval = ext2fs_read_inode_bitmap(current_fs);
  57         if (retval) {
  58                 com_err(device, retval, "while reading inode bitmap");
  59                 goto errout;
  60         }
  61         retval = ext2fs_read_block_bitmap(current_fs);
  62         if (retval) {
  63                 com_err(device, retval, "while reading block bitmap");
  64                 goto errout;
  65         }
  66         root = cwd = EXT2_ROOT_INO;
  67         return;
  68
  69 errout:
  70         retval = ext2fs_close(current_fs);
  71         if (retval)
  72                 com_err(device, retval, "while trying to close filesystem");
  73         current_fs = NULL;
  74 }
  75
  76 void do_open_filesys(int argc, char **argv)
  77 {
  78         const char      *usage = "Usage: open [-w] <device>";
  79         int     c;
  80         int open_flags = 0;
  81
  82         optind = 0;
  83 #ifdef HAVE_OPTRESET
  84         optreset = 1;           /* Makes BSD getopt happy */
  85 #endif
  86         while ((c = getopt (argc, argv, "w")) != EOF) {
  87                 switch (c) {
  88                 case 'w':
  89                         open_flags = EXT2_FLAG_RW;
  90                         break;
  91                 default:
  92                         com_err(argv[0], 0, usage);
  93                         return;
  94                 }
  95         }
  96         if (optind != argc-1) {
  97                 com_err(argv[0], 0, usage);
  98                 return;
  99         }
 100         if (check_fs_not_open(argv[0]))
 101                 return;
 102         open_filesystem(argv[optind], open_flags);
 103 }
 104
 105 static void close_filesystem(NOARGS)
 106 {
 107         int     retval;
 108
 109         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 110                 retval = ext2fs_write_inode_bitmap(current_fs);
 111                 if (retval)
 112                         com_err("ext2fs_write_inode_bitmap", retval, "");
 113         }
 114         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 115                 retval = ext2fs_write_block_bitmap(current_fs);
 116                 if (retval)
 117                         com_err("ext2fs_write_block_bitmap", retval, "");
 118         }
 119         retval = ext2fs_close(current_fs);
 120         if (retval)
 121                 com_err("ext2fs_close", retval, "");
 122         current_fs = NULL;
 123         return;
 124 }
 125
 126 void do_close_filesys(int argc, char **argv)
 127 {
 128         if (argc > 1) {
 129                 com_err(argv[0], 0, "Usage: close_filesys");
 130                 return;
 131         }
 132         if (check_fs_open(argv[0]))
 133                 return;
 134         close_filesystem();
 135 }
 136
 137 void do_init_filesys(int argc, char **argv)
 138 {
 139         const char      *usage = "Usage: initialize <device> <blocksize>";
 140         struct ext2_super_block param;
 141         errcode_t       retval;
 142         char            *tmp;
 143
 144         if (argc != 3) {
 145                 com_err(argv[0], 0, usage);
 146                 return;
 147         }
 148         if (check_fs_not_open(argv[0]))
 149                 return;
 150
 151         memset(&param, 0, sizeof(struct ext2_super_block));
 152         param.s_blocks_count = strtoul(argv[2], &tmp, 0);
 153         if (*tmp) {
 154                 com_err(argv[0], 0, "Bad blocks count - %s", argv[2]);
 155                 return;
 156         }
 157         retval = ext2fs_initialize(argv[1], 0, &param,
 158                                    unix_io_manager, &current_fs);
 159         if (retval) {
 160                 com_err(argv[1], retval, "while initializing filesystem");
 161                 current_fs = NULL;
 162                 return;
 163         }
 164         root = cwd = EXT2_ROOT_INO;
 165         return;
 166 }
 167
 168 void do_show_super_stats(int argc, char *argv[])
 169 {
 170         int     i;
 171         FILE    *out;
 172         struct ext2fs_sb *sb;
 173         struct ext2_group_desc *gdp;
 174         char buf[80];
 175         const char *none = "(none)";
 176
 177         if (argc > 1) {
 178                 com_err(argv[0], 0, "Usage: show_super");
 179                 return;
 180         }
 181         if (check_fs_open(argv[0]))
 182                 return;
 183         out = open_pager();
 184         sb = (struct ext2fs_sb *) current_fs->super;
 185         fprintf(out, "Filesystem is read-%s\n",
 186                 current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
 187         if (sb->s_volume_name[0]) {
 188                 memset(buf, 0, sizeof(buf));
 189                 strncpy(buf, sb->s_volume_name, sizeof(sb->s_volume_name));
 190         } else
 191                 strcpy(buf, none);
 192         fprintf(out, "Volume name = %s\n", buf);
 193         if (sb->s_last_mounted[0]) {
 194                 memset(buf, 0, sizeof(buf));
 195                 strncpy(buf, sb->s_last_mounted, sizeof(sb->s_last_mounted));
 196         } else
 197                 strcpy(buf, none);
 198         fprintf(out, "Last mounted directory = %s\n", buf);
 199         if (!uuid_is_null(sb->s_uuid))
 200                 uuid_unparse(sb->s_uuid, buf);
 201         else
 202                 strcpy(buf, none);
 203         fprintf(out, "Filesystem UUID = %s\n", buf);
 204         fprintf(out, "Last mount time = %s", time_to_string(sb->s_mtime));
 205         fprintf(out, "Last write time = %s", time_to_string(sb->s_wtime));
 206         fprintf(out, "Mount counts = %d (maximal = %d)\n",
 207                 sb->s_mnt_count, sb->s_max_mnt_count);
 208         fputs ("Filesystem OS type = ", out);
 209         switch (sb->s_creator_os) {
 210             case EXT2_OS_LINUX: fputs ("Linux\n", out); break;
 211             case EXT2_OS_HURD:  fputs ("GNU\n", out); break;
 212             case EXT2_OS_MASIX: fputs ("Masix\n", out); break;
 213             default:            fputs ("unknown\n", out);
 214         }
 215         fprintf(out, "Superblock size = %d\n",
 216                 sizeof(struct ext2_super_block));
 217         fprintf(out, "Block size = %d, fragment size = %d\n",
 218                 EXT2_BLOCK_SIZE(sb), EXT2_FRAG_SIZE(sb));
 219         fprintf(out, "Inode size = %d\n", EXT2_INODE_SIZE(sb));
 220         fprintf(out, "%d inodes, %d free\n", sb->s_inodes_count,
 221                 sb->s_free_inodes_count);
 222         fprintf(out, "%d blocks, %d free, %d reserved, first block = %d\n",
 223                 sb->s_blocks_count, sb->s_free_blocks_count,
 224                 sb->s_r_blocks_count, sb->s_first_data_block);
 225         fprintf(out, "%d blocks per group\n", sb->s_blocks_per_group);
 226         fprintf(out, "%d fragments per group\n", sb->s_frags_per_group);
 227         fprintf(out, "%d inodes per group\n", EXT2_INODES_PER_GROUP(sb));
 228         fprintf(out, "%ld group%s (%ld descriptors block%s)\n",
 229                 current_fs->group_desc_count,
 230                 (current_fs->group_desc_count != 1) ? "s" : "",
 231                 current_fs->desc_blocks,
 232                 (current_fs->desc_blocks != 1) ? "s" : "");
 233
 234         gdp = &current_fs->group_desc[0];
 235         for (i = 0; i < current_fs->group_desc_count; i++, gdp++)
 236                 fprintf(out, " Group %2d: block bitmap at %d, "
 237                         "inode bitmap at %d, "
 238                         "inode table at %d\n"
 239                         "           %d free block%s, "
 240                         "%d free inode%s, "
 241                         "%d used director%s\n",
 242                         i, gdp->bg_block_bitmap,
 243                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 244                         gdp->bg_free_blocks_count,
 245                         gdp->bg_free_blocks_count != 1 ? "s" : "",
 246                         gdp->bg_free_inodes_count,
 247                         gdp->bg_free_inodes_count != 1 ? "s" : "",
 248                         gdp->bg_used_dirs_count,
 249                         gdp->bg_used_dirs_count != 1 ? "ies" : "y");
 250         close_pager(out);
 251 }
 252
 253 void do_dirty_filesys(int argc, char **argv)
 254 {
 255         if (check_fs_open(argv[0]))
 256                 return;
 257
 258         ext2fs_mark_super_dirty(current_fs);
 259 }
 260
 261 struct list_blocks_struct {
 262         FILE    *f;
 263         int     total;
 264 };
 265
 266 static int list_blocks_proc(ext2_filsys fs, blk_t *blocknr, int blockcnt,
 267                             void *private)
 268 {
 269         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 270
 271         fprintf(lb->f, "%d ", *blocknr);
 272         lb->total++;
 273         return 0;
 274 }
 275
 276
 277 static void dump_blocks(FILE *f, ino_t inode)
 278 {
 279         struct list_blocks_struct lb;
 280
 281         fprintf(f, "BLOCKS:\n");
 282         lb.total = 0;
 283         lb.f = f;
 284         ext2fs_block_iterate(current_fs, inode, 0, NULL,
 285                              list_blocks_proc, (void *)&lb);
 286         if (lb.total)
 287                 fprintf(f, "\nTOTAL: %d\n", lb.total);
 288         fprintf(f,"\n");
 289 }
 290
 291
 292 static void dump_inode(ino_t inode_num, struct ext2_inode inode)
 293 {
 294         const char *i_type;
 295         FILE    *out;
 296         char frag, fsize;
 297         int os = current_fs->super->s_creator_os;
 298
 299         out = open_pager();
 300         if (LINUX_S_ISDIR(inode.i_mode)) i_type = "directory";
 301         else if (LINUX_S_ISREG(inode.i_mode)) i_type = "regular";
 302         else if (LINUX_S_ISLNK(inode.i_mode)) i_type = "symlink";
 303         else if (LINUX_S_ISBLK(inode.i_mode)) i_type = "block special";
 304         else if (LINUX_S_ISCHR(inode.i_mode)) i_type = "character special";
 305         else if (LINUX_S_ISFIFO(inode.i_mode)) i_type = "FIFO";
 306         else if (LINUX_S_ISSOCK(inode.i_mode)) i_type = "socket";
 307         else i_type = "bad type";
 308         fprintf(out, "Inode: %ld   Type: %s    ", inode_num, i_type);
 309         fprintf(out, "Mode:  %04o   Flags: 0x%x   Version: %d\n",
 310                 inode.i_mode & 0777, inode.i_flags, inode.i_version);
 311         fprintf(out, "User: %5d   Group: %5d   Size: ",
 312                 inode.i_uid, inode.i_gid);
 313         if (LINUX_S_ISDIR(inode.i_mode))
 314                 fprintf(out, "%d\n", inode.i_size);
 315         else {
 316                 __u64 i_size = (inode.i_size |
 317                                 ((unsigned long long)inode.i_size_high << 32));
 318
 319                 fprintf(out, "%lld\n", i_size);
 320         }
 321         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 322                 fprintf(out,
 323                         "File ACL: %d    Directory ACL: %d Translator: %d\n",
 324                         inode.i_file_acl, LINUX_S_ISDIR(inode.i_mode) ? inode.i_dir_acl : 0,
 325                         inode.osd1.hurd1.h_i_translator);
 326         else
 327                 fprintf(out, "File ACL: %d    Directory ACL: %d\n",
 328                         inode.i_file_acl, LINUX_S_ISDIR(inode.i_mode) ? inode.i_dir_acl : 0);
 329         fprintf(out, "Links: %d   Blockcount: %d\n", inode.i_links_count,
 330                 inode.i_blocks);
 331         switch (os) {
 332             case EXT2_OS_LINUX:
 333                 frag = inode.osd2.linux2.l_i_frag;
 334                 fsize = inode.osd2.linux2.l_i_fsize;
 335                 break;
 336             case EXT2_OS_HURD:
 337                 frag = inode.osd2.hurd2.h_i_frag;
 338                 fsize = inode.osd2.hurd2.h_i_fsize;
 339                 break;
 340             case EXT2_OS_MASIX:
 341                 frag = inode.osd2.masix2.m_i_frag;
 342                 fsize = inode.osd2.masix2.m_i_fsize;
 343                 break;
 344             default:
 345                 frag = fsize = 0;
 346         }
 347         fprintf(out, "Fragment:  Address: %d    Number: %d    Size: %d\n",
 348                 inode.i_faddr, frag, fsize);
 349         fprintf(out, "ctime: 0x%08x -- %s", inode.i_ctime,
 350                 time_to_string(inode.i_ctime));
 351         fprintf(out, "atime: 0x%08x -- %s", inode.i_atime,
 352                 time_to_string(inode.i_atime));
 353         fprintf(out, "mtime: 0x%08x -- %s", inode.i_mtime,
 354                 time_to_string(inode.i_mtime));
 355         if (inode.i_dtime)
 356           fprintf(out, "dtime: 0x%08x -- %s", inode.i_dtime,
 357                   time_to_string(inode.i_dtime));
 358         if (LINUX_S_ISLNK(inode.i_mode) && inode.i_blocks == 0)
 359                 fprintf(out, "Fast_link_dest: %s\n", (char *)inode.i_block);
 360         else
 361                 dump_blocks(out, inode_num);
 362         close_pager(out);
 363 }
 364
 365
 366 void do_stat(int argc, char *argv[])
 367 {
 368         ino_t   inode;
 369         struct ext2_inode inode_buf;
 370         int retval;
 371
 372         if (argc != 2) {
 373                 com_err(argv[0], 0, "Usage: stat <file>");
 374                 return;
 375         }
 376         if (check_fs_open(argv[0]))
 377                 return;
 378         inode = string_to_inode(argv[1]);
 379         if (!inode)
 380                 return;
 381
 382         retval = ext2fs_read_inode(current_fs, inode, &inode_buf);
 383         if (retval)
 384           {
 385             com_err(argv[0], 0, "Reading inode");
 386             return;
 387           }
 388
 389         dump_inode(inode,inode_buf);
 390         return;
 391 }
 392
 393 void do_chroot(int argc, char *argv[])
 394 {
 395         ino_t inode;
 396         int retval;
 397
 398         if (argc != 2) {
 399                 com_err(argv[0], 0, "Usage: chroot <file>");
 400                 return;
 401         }
 402         if (check_fs_open(argv[0]))
 403                 return;
 404         inode = string_to_inode(argv[1]);
 405         if (!inode)
 406                 return;
 407
 408         retval = ext2fs_check_directory(current_fs, inode);
 409         if (retval)  {
 410                 com_err(argv[1], retval, "");
 411                 return;
 412         }
 413         root = inode;
 414 }
 415
 416 void do_clri(int argc, char *argv[])
 417 {
 418         ino_t inode;
 419         int retval;
 420         struct ext2_inode inode_buf;
 421
 422         if (argc != 2) {
 423                 com_err(argv[0], 0, "Usage: clri <file>");
 424                 return;
 425         }
 426         if (check_fs_open(argv[0]))
 427                 return;
 428         if (check_fs_read_write(argv[0]))
 429                 return;
 430         inode = string_to_inode(argv[1]);
 431         if (!inode)
 432                 return;
 433
 434         retval = ext2fs_read_inode(current_fs, inode, &inode_buf);
 435         if (retval) {
 436                 com_err(argv[0], 0, "while trying to read inode %d", inode);
 437                 return;
 438         }
 439         memset(&inode_buf, 0, sizeof(inode_buf));
 440         retval = ext2fs_write_inode(current_fs, inode, &inode_buf);
 441         if (retval) {
 442                 com_err(argv[0], retval, "while trying to write inode %d",
 443                         inode);
 444                 return;
 445         }
 446 }
 447
 448 void do_freei(int argc, char *argv[])
 449 {
 450         ino_t inode;
 451
 452         if (argc != 2) {
 453                 com_err(argv[0], 0, "Usage: freei <file>");
 454                 return;
 455         }
 456         if (check_fs_open(argv[0]))
 457                 return;
 458         if (check_fs_read_write(argv[0]))
 459                 return;
 460         inode = string_to_inode(argv[1]);
 461         if (!inode)
 462                 return;
 463
 464         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 465                 com_err(argv[0], 0, "Warning: inode already clear");
 466         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 467         ext2fs_mark_ib_dirty(current_fs);
 468 }
 469
 470 void do_seti(int argc, char *argv[])
 471 {
 472         ino_t inode;
 473
 474         if (argc != 2) {
 475                 com_err(argv[0], 0, "Usage: seti <file>");
 476                 return;
 477         }
 478         if (check_fs_open(argv[0]))
 479                 return;
 480         if (check_fs_read_write(argv[0]))
 481                 return;
 482         inode = string_to_inode(argv[1]);
 483         if (!inode)
 484                 return;
 485
 486         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 487                 com_err(argv[0], 0, "Warning: inode already set");
 488         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 489         ext2fs_mark_ib_dirty(current_fs);
 490 }
 491
 492 void do_testi(int argc, char *argv[])
 493 {
 494         ino_t inode;
 495
 496         if (argc != 2) {
 497                 com_err(argv[0], 0, "Usage: testi <file>");
 498                 return;
 499         }
 500         if (check_fs_open(argv[0]))
 501                 return;
 502         inode = string_to_inode(argv[1]);
 503         if (!inode)
 504                 return;
 505
 506         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 507                 printf("Inode %ld is marked in use\n", inode);
 508         else
 509                 printf("Inode %ld is not in use\n", inode);
 510 }
 511
 512
 513 void do_freeb(int argc, char *argv[])
 514 {
 515         blk_t block;
 516         char *tmp;
 517
 518         if (argc != 2) {
 519                 com_err(argv[0], 0, "Usage: freeb <block>");
 520                 return;
 521         }
 522         if (check_fs_open(argv[0]))
 523                 return;
 524         if (check_fs_read_write(argv[0]))
 525                 return;
 526         block = strtoul(argv[1], &tmp, 0);
 527         if (!block || *tmp) {
 528                 com_err(argv[0], 0, "No block 0");
 529                 return;
 530         }
 531         if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 532                 com_err(argv[0], 0, "Warning: block already clear");
 533         ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 534         ext2fs_mark_bb_dirty(current_fs);
 535 }
 536
 537 void do_setb(int argc, char *argv[])
 538 {
 539         blk_t block;
 540         char *tmp;
 541
 542         if (argc != 2) {
 543                 com_err(argv[0], 0, "Usage: setb <block>");
 544                 return;
 545         }
 546         if (check_fs_open(argv[0]))
 547                 return;
 548         if (check_fs_read_write(argv[0]))
 549                 return;
 550         block = strtoul(argv[1], &tmp, 0);
 551         if (!block || *tmp) {
 552                 com_err(argv[0], 0, "No block 0");
 553                 return;
 554         }
 555         if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 556                 com_err(argv[0], 0, "Warning: block already set");
 557         ext2fs_mark_block_bitmap(current_fs->block_map,block);
 558         ext2fs_mark_bb_dirty(current_fs);
 559 }
 560
 561 void do_testb(int argc, char *argv[])
 562 {
 563         blk_t block;
 564         char *tmp;
 565
 566         if (argc != 2) {
 567                 com_err(argv[0], 0, "Usage: testb <block>");
 568                 return;
 569         }
 570         if (check_fs_open(argv[0]))
 571                 return;
 572         block = strtoul(argv[1], &tmp, 0);
 573         if (!block || *tmp) {
 574                 com_err(argv[0], 0, "No block 0");
 575                 return;
 576         }
 577         if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 578                 printf("Block %d marked in use\n", block);
 579         else printf("Block %d not in use\n", block);
 580 }
 581
 582 static void modify_u8(char *com, const char *prompt,
 583                       const char *format, __u8 *val)
 584 {
 585         char buf[200];
 586         unsigned long v;
 587         char *tmp;
 588
 589         sprintf(buf, format, *val);
 590         printf("%30s    [%s] ", prompt, buf);
 591         fgets(buf, sizeof(buf), stdin);
 592         if (buf[strlen (buf) - 1] == '\n')
 593                 buf[strlen (buf) - 1] = '\0';
 594         if (!buf[0])
 595                 return;
 596         v = strtoul(buf, &tmp, 0);
 597         if (*tmp)
 598                 com_err(com, 0, "Bad value - %s", buf);
 599         else
 600                 *val = v;
 601 }
 602
 603 static void modify_u16(char *com, const char *prompt,
 604                        const char *format, __u16 *val)
 605 {
 606         char buf[200];
 607         unsigned long v;
 608         char *tmp;
 609
 610         sprintf(buf, format, *val);
 611         printf("%30s    [%s] ", prompt, buf);
 612         fgets(buf, sizeof(buf), stdin);
 613         if (buf[strlen (buf) - 1] == '\n')
 614                 buf[strlen (buf) - 1] = '\0';
 615         if (!buf[0])
 616                 return;
 617         v = strtoul(buf, &tmp, 0);
 618         if (*tmp)
 619                 com_err(com, 0, "Bad value - %s", buf);
 620         else
 621                 *val = v;
 622 }
 623
 624 static void modify_u32(char *com, const char *prompt,
 625                        const char *format, __u32 *val)
 626 {
 627         char buf[200];
 628         unsigned long v;
 629         char *tmp;
 630
 631         sprintf(buf, format, *val);
 632         printf("%30s    [%s] ", prompt, buf);
 633         fgets(buf, sizeof(buf), stdin);
 634         if (buf[strlen (buf) - 1] == '\n')
 635                 buf[strlen (buf) - 1] = '\0';
 636         if (!buf[0])
 637                 return;
 638         v = strtoul(buf, &tmp, 0);
 639         if (*tmp)
 640                 com_err(com, 0, "Bad value - %s", buf);
 641         else
 642                 *val = v;
 643 }
 644
 645
 646 void do_modify_inode(int argc, char *argv[])
 647 {
 648         struct ext2_inode inode;
 649         ino_t inode_num;
 650         int i;
 651         errcode_t       retval;
 652         unsigned char *frag, *fsize;
 653         char    buf[80];
 654         int os = current_fs->super->s_creator_os;
 655         const char *hex_format = "0x%x";
 656         const char *octal_format = "0%o";
 657         const char *decimal_format = "%d";
 658
 659         if (argc != 2) {
 660                 com_err(argv[0], 0, "Usage: modify_inode <file>");
 661                 return;
 662         }
 663         if (check_fs_open(argv[0]))
 664                 return;
 665         if (check_fs_read_write(argv[0]))
 666                 return;
 667
 668         inode_num = string_to_inode(argv[1]);
 669         if (!inode_num)
 670                 return;
 671
 672         retval = ext2fs_read_inode(current_fs, inode_num, &inode);
 673         if (retval) {
 674                 com_err(argv[1], retval, "while trying to read inode %d",
 675                         inode_num);
 676                 return;
 677         }
 678
 679         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 680         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 681         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 682         modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
 683         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 684         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 685         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 686         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 687         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 688         modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
 689         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 690 #if 0
 691         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 692 #endif
 693         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 694         if (LINUX_S_ISDIR(inode.i_mode))
 695                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 696         else
 697                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 698
 699         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 700                 modify_u32(argv[0], "Translator Block",
 701                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 702
 703         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 704         switch (os) {
 705             case EXT2_OS_LINUX:
 706                 frag = &inode.osd2.linux2.l_i_frag;
 707                 fsize = &inode.osd2.linux2.l_i_fsize;
 708                 break;
 709             case EXT2_OS_HURD:
 710                 frag = &inode.osd2.hurd2.h_i_frag;
 711                 fsize = &inode.osd2.hurd2.h_i_fsize;
 712                 break;
 713             case EXT2_OS_MASIX:
 714                 frag = &inode.osd2.masix2.m_i_frag;
 715                 fsize = &inode.osd2.masix2.m_i_fsize;
 716                 break;
 717             default:
 718                 frag = fsize = 0;
 719         }
 720         if (frag)
 721                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 722         if (fsize)
 723                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 724
 725         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 726                 sprintf(buf, "Direct Block #%d", i);
 727                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 728         }
 729         modify_u32(argv[0], "Indirect Block", decimal_format,
 730                     &inode.i_block[EXT2_IND_BLOCK]);
 731         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 732                     &inode.i_block[EXT2_DIND_BLOCK]);
 733         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 734                     &inode.i_block[EXT2_TIND_BLOCK]);
 735         retval = ext2fs_write_inode(current_fs, inode_num, &inode);
 736         if (retval) {
 737                 com_err(argv[1], retval, "while trying to write inode %d",
 738                         inode_num);
 739                 return;
 740         }
 741 }
 742
 743 void do_change_working_dir(int argc, char *argv[])
 744 {
 745         ino_t   inode;
 746         int     retval;
 747
 748         if (argc != 2) {
 749                 com_err(argv[0], 0, "Usage: cd <file>");
 750                 return;
 751         }
 752         if (check_fs_open(argv[0]))
 753                 return;
 754
 755         inode = string_to_inode(argv[1]);
 756         if (!inode)
 757                 return;
 758
 759         retval = ext2fs_check_directory(current_fs, inode);
 760         if (retval) {
 761                 com_err(argv[1], retval, "");
 762                 return;
 763         }
 764         cwd = inode;
 765         return;
 766 }
 767
 768 void do_print_working_directory(int argc, char *argv[])
 769 {
 770         int     retval;
 771         char    *pathname = NULL;
 772
 773         if (argc > 1) {
 774                 com_err(argv[0], 0, "Usage: print_working_directory");
 775                 return;
 776         }
 777         if (check_fs_open(argv[0]))
 778                 return;
 779
 780         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 781         if (retval) {
 782                 com_err(argv[0], retval,
 783                         "while trying to get pathname of cwd");
 784         }
 785         printf("[pwd]   INODE: %6ld  PATH: %s\n", cwd, pathname);
 786         free(pathname);
 787         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 788         if (retval) {
 789                 com_err(argv[0], retval,
 790                         "while trying to get pathname of root");
 791         }
 792         printf("[root]  INODE: %6ld  PATH: %s\n", root, pathname);
 793         free(pathname);
 794         return;
 795 }
 796
 797 static void make_link(char *sourcename, char *destname)
 798 {
 799         ino_t   inode;
 800         int     retval;
 801         ino_t   dir;
 802         char    *dest, *cp, *basename;
 803
 804         /*
 805          * Get the source inode
 806          */
 807         inode = string_to_inode(sourcename);
 808         if (!inode)
 809                 return;
 810         basename = strrchr(sourcename, '/');
 811         if (basename)
 812                 basename++;
 813         else
 814                 basename = sourcename;
 815         /*
 816          * Figure out the destination.  First see if it exists and is
 817          * a directory.
 818          */
 819         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
 820                 dest = basename;
 821         else {
 822                 /*
 823                  * OK, it doesn't exist.  See if it is
 824                  * '<dir>/basename' or 'basename'
 825                  */
 826                 cp = strrchr(destname, '/');
 827                 if (cp) {
 828                         *cp = 0;
 829                         dir = string_to_inode(destname);
 830                         if (!dir)
 831                                 return;
 832                         dest = cp+1;
 833                 } else {
 834                         dir = cwd;
 835                         dest = destname;
 836                 }
 837         }
 838
 839         retval = ext2fs_link(current_fs, dir, dest, inode, 0);
 840         if (retval)
 841                 com_err("make_link", retval, "");
 842         return;
 843 }
 844
 845
 846 void do_link(int argc, char *argv[])
 847 {
 848         if (argc != 3) {
 849                 com_err(argv[0], 0, "Usage: link <source_file> <dest_name>");
 850                 return;
 851         }
 852         if (check_fs_open(argv[0]))
 853                 return;
 854
 855         make_link(argv[1], argv[2]);
 856 }
 857
 858 static void unlink_file_by_name(char *filename)
 859 {
 860         int     retval;
 861         ino_t   dir;
 862         char    *basename;
 863
 864         basename = strrchr(filename, '/');
 865         if (basename) {
 866                 *basename++ = '\0';
 867                 dir = string_to_inode(filename);
 868                 if (!dir)
 869                         return;
 870         } else {
 871                 dir = cwd;
 872                 basename = filename;
 873         }
 874         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
 875         if (retval)
 876                 com_err("unlink_file_by_name", retval, "");
 877         return;
 878 }
 879
 880 void do_unlink(int argc, char *argv[])
 881 {
 882         if (argc != 2) {
 883                 com_err(argv[0], 0, "Usage: unlink <pathname>");
 884                 return;
 885         }
 886         if (check_fs_open(argv[0]))
 887                 return;
 888
 889         unlink_file_by_name(argv[1]);
 890 }
 891
 892 void do_find_free_block(int argc, char *argv[])
 893 {
 894         blk_t   free_blk, goal;
 895         errcode_t       retval;
 896         char            *tmp;
 897
 898         if ((argc > 2) || (argc==2 && *argv[1] == '?')) {
 899                 com_err(argv[0], 0, "Usage: find_free_block [goal]");
 900                 return;
 901         }
 902         if (check_fs_open(argv[0]))
 903                 return;
 904
 905         if (argc > 1) {
 906                 goal = strtol(argv[1], &tmp, 0);
 907                 if (*tmp) {
 908                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
 909                         return;
 910                 }
 911         }
 912         else
 913                 goal = current_fs->super->s_first_data_block;
 914
 915         retval = ext2fs_new_block(current_fs, goal, 0, &free_blk);
 916         if (retval)
 917                 com_err("ext2fs_new_block", retval, "");
 918         else
 919                 printf("Free block found: %d\n", free_blk);
 920
 921 }
 922
 923 void do_find_free_inode(int argc, char *argv[])
 924 {
 925         ino_t   free_inode, dir;
 926         int     mode;
 927         int     retval;
 928         char    *tmp;
 929
 930         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
 931                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
 932                 return;
 933         }
 934         if (check_fs_open(argv[0]))
 935                 return;
 936
 937         if (argc > 1) {
 938                 dir = strtol(argv[1], &tmp, 0);
 939                 if (*tmp) {
 940                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
 941                         return;
 942                 }
 943         }
 944         else
 945                 dir = root;
 946         if (argc > 2) {
 947                 mode = strtol(argv[2], &tmp, 0);
 948                 if (*tmp) {
 949                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
 950                         return;
 951                 }
 952         } else
 953                 mode = 010755;
 954
 955         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
 956         if (retval)
 957                 com_err("ext2fs_new_inode", retval, "");
 958         else
 959                 printf("Free inode found: %ld\n", free_inode);
 960 }
 961
 962 static errcode_t copy_file(int fd, ino_t newfile)
 963 {
 964         ext2_file_t     e2_file;
 965         errcode_t       retval;
 966         unsigned int    got, written;
 967         char            buf[8192];
 968         char            *ptr;
 969
 970         retval = ext2fs_file_open(current_fs, newfile,
 971                                   EXT2_FILE_WRITE, &e2_file);
 972         if (retval)
 973                 return retval;
 974
 975         while (1) {
 976                 got = read(fd, buf, sizeof(buf));
 977                 if (got == 0)
 978                         break;
 979                 if (got < 0) {
 980                         retval = errno;
 981                         goto fail;
 982                 }
 983                 ptr = buf;
 984                 while (got > 0) {
 985                         retval = ext2fs_file_write(e2_file, ptr,
 986                                                    got, &written);
 987                         if (retval)
 988                                 goto fail;
 989
 990                         got -= written;
 991                         ptr += written;
 992                 }
 993         }
 994         retval = ext2fs_file_close(e2_file);
 995
 996         return retval;
 997
 998 fail:
 999         (void) ext2fs_file_close(e2_file);
1000         return retval;
1001 }
1002
1003
1004 void do_write(int argc, char *argv[])
1005 {
1006         int     fd;
1007         struct stat statbuf;
1008         ino_t   newfile;
1009         errcode_t retval;
1010         struct ext2_inode inode;
1011         dgrp_t group;
1012
1013         if (check_fs_open(argv[0]))
1014                 return;
1015         if (argc != 3) {
1016                 com_err(argv[0], 0, "Usage: write <nativefile> <newfile>");
1017                 return;
1018         }
1019         if (check_fs_read_write(argv[0]))
1020                 return;
1021         fd = open(argv[1], O_RDONLY);
1022         if (fd < 0) {
1023                 com_err(argv[1], fd, "");
1024                 return;
1025         }
1026         if (fstat(fd, &statbuf) < 0) {
1027                 com_err(argv[1], errno, "");
1028                 close(fd);
1029                 return;
1030         }
1031
1032         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1033         if (retval) {
1034                 com_err(argv[0], retval, "");
1035                 close(fd);
1036                 return;
1037         }
1038         group = ext2fs_group_of_ino(current_fs, newfile);
1039         current_fs->group_desc[group].bg_free_inodes_count--;
1040         current_fs->super->s_free_inodes_count--;
1041         ext2fs_mark_super_dirty(current_fs);
1042         printf("Allocated inode: %ld\n", newfile);
1043         retval = ext2fs_link(current_fs, cwd, argv[2], newfile, 0);
1044         if (retval) {
1045                 com_err(argv[2], retval, "");
1046                 close(fd);
1047                 return;
1048         }
1049         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1050                 com_err(argv[0], 0, "Warning: inode already set");
1051         ext2fs_mark_inode_bitmap(current_fs->inode_map,newfile);
1052         ext2fs_mark_ib_dirty(current_fs);
1053         memset(&inode, 0, sizeof(inode));
1054         inode.i_mode = statbuf.st_mode;
1055         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1056         inode.i_links_count = 1;
1057         inode.i_size = statbuf.st_size;
1058         ext2fs_write_inode(current_fs, newfile, &inode);
1059         retval = ext2fs_write_inode(current_fs, newfile, &inode);
1060         if (retval) {
1061                 com_err(argv[0], retval, "while trying to write inode %d",
1062                         inode);
1063                 close(fd);
1064                 return;
1065         }
1066         if (LINUX_S_ISREG(inode.i_mode)) {
1067                 retval = copy_file(fd, newfile);
1068                 if (retval)
1069                         com_err("copy_file", retval, "");
1070         }
1071         close(fd);
1072 }
1073
1074 void do_mknod(int argc, char *argv[])
1075 {
1076         unsigned long mode, major, minor, nr;
1077         ino_t   newfile;
1078         errcode_t retval;
1079         struct ext2_inode inode;
1080
1081         if (check_fs_open(argv[0]))
1082                 return;
1083         if (argc < 3 || argv[2][1]) {
1084                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1085                 return;
1086         }
1087         mode = minor = major = 0;
1088         switch (argv[2][0]) {
1089                 case 'p':
1090                         mode = LINUX_S_IFIFO;
1091                         nr = 3;
1092                         break;
1093                 case 'c':
1094                         mode = LINUX_S_IFCHR;
1095                         nr = 5;
1096                         break;
1097                 case 'b':
1098                         mode = LINUX_S_IFBLK;
1099                         nr = 5;
1100                         break;
1101                 default:
1102                         nr = 0;
1103         }
1104         if (nr == 5) {
1105                 major = strtoul(argv[3], argv+3, 0);
1106                 minor = strtoul(argv[4], argv+4, 0);
1107                 if (major > 255 || minor > 255 || argv[3][0] || argv[4][0])
1108                         nr = 0;
1109         }
1110         if (argc != nr) {
1111                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1112                 return;
1113         }
1114         if (check_fs_read_write(argv[0]))
1115                 return;
1116         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1117         if (retval) {
1118                 com_err(argv[0], retval, "");
1119                 return;
1120         }
1121         printf("Allocated inode: %ld\n", newfile);
1122         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, 0);
1123         if (retval) {
1124                 if (retval == EXT2_ET_DIR_NO_SPACE) {
1125                         retval = ext2fs_expand_dir(current_fs, cwd);
1126                         if (!retval)
1127                                 retval = ext2fs_link(current_fs, cwd,
1128                                                      argv[1], newfile, 0);
1129                 }
1130                 if (retval) {
1131                         com_err(argv[1], retval, "");
1132                         return;
1133                 }
1134         }
1135         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1136                 com_err(argv[0], 0, "Warning: inode already set");
1137         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1138         ext2fs_mark_ib_dirty(current_fs);
1139         memset(&inode, 0, sizeof(inode));
1140         inode.i_mode = mode;
1141         inode.i_atime = inode.i_ctime = inode.i_mtime = time(NULL);
1142         inode.i_block[0] = major*256+minor;
1143         inode.i_links_count = 1;
1144         ext2fs_write_inode(current_fs, newfile, &inode);
1145         retval = ext2fs_write_inode(current_fs, newfile, &inode);
1146         if (retval) {
1147                 com_err(argv[0], retval, "while trying to write inode %d", inode);
1148                 return;
1149         }
1150 }
1151
1152 void do_mkdir(int argc, char *argv[])
1153 {
1154         char    *cp;
1155         ino_t   parent;
1156         char    *name;
1157         errcode_t retval;
1158
1159         if (check_fs_open(argv[0]))
1160                 return;
1161
1162         if (argc != 2) {
1163                 com_err(argv[0], 0, "Usage: mkdir <file>");
1164                 return;
1165         }
1166
1167         cp = strrchr(argv[1], '/');
1168         if (cp) {
1169                 *cp = 0;
1170                 parent = string_to_inode(argv[1]);
1171                 if (!parent) {
1172                         com_err(argv[1], ENOENT, "");
1173                         return;
1174                 }
1175                 name = cp+1;
1176         } else {
1177                 parent = cwd;
1178                 name = argv[1];
1179         }
1180
1181
1182         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1183         if (retval) {
1184                 com_err("ext2fs_mkdir", retval, "");
1185                 return;
1186         }
1187
1188 }
1189
1190 void do_rmdir(int argc, char *argv[])
1191 {
1192         printf("Unimplemented\n");
1193 }
1194
1195
1196 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1197                                int blockcnt, void *private)
1198 {
1199         printf("%d ", *blocknr);
1200         ext2fs_unmark_block_bitmap(fs->block_map,*blocknr);
1201         return 0;
1202 }
1203
1204 static void kill_file_by_inode(ino_t inode)
1205 {
1206         struct ext2_inode inode_buf;
1207
1208         ext2fs_read_inode(current_fs, inode, &inode_buf);
1209         inode_buf.i_dtime = time(NULL);
1210         ext2fs_write_inode(current_fs, inode, &inode_buf);
1211
1212         printf("Kill file by inode %ld\n", inode);
1213         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1214                              release_blocks_proc, NULL);
1215         printf("\n");
1216         ext2fs_unmark_inode_bitmap(current_fs->inode_map, inode);
1217
1218         ext2fs_mark_bb_dirty(current_fs);
1219         ext2fs_mark_ib_dirty(current_fs);
1220 }
1221
1222
1223 void do_kill_file(int argc, char *argv[])
1224 {
1225         ino_t inode_num;
1226
1227         if (argc != 2) {
1228                 com_err(argv[0], 0, "Usage: kill_file <file>");
1229                 return;
1230         }
1231         if (check_fs_open(argv[0]))
1232                 return;
1233
1234         inode_num = string_to_inode(argv[1]);
1235         if (!inode_num) {
1236                 com_err(argv[0], 0, "Cannot find file");
1237                 return;
1238         }
1239         kill_file_by_inode(inode_num);
1240 }
1241
1242 void do_rm(int argc, char *argv[])
1243 {
1244         int retval;
1245         ino_t inode_num;
1246         struct ext2_inode inode;
1247
1248         if (argc != 2) {
1249                 com_err(argv[0], 0, "Usage: rm <filename>");
1250                 return;
1251         }
1252         if (check_fs_open(argv[0]))
1253                 return;
1254
1255         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1256         if (retval) {
1257                 com_err(argv[0], 0, "Cannot find file");
1258                 return;
1259         }
1260
1261         retval = ext2fs_read_inode(current_fs,inode_num,&inode);
1262         if (retval) {
1263                 com_err(argv[0], retval, "while reading file's inode");
1264                 return;
1265         }
1266
1267         if (LINUX_S_ISDIR(inode.i_mode)) {
1268                 com_err(argv[0], 0, "file is a directory");
1269                 return;
1270         }
1271
1272         --inode.i_links_count;
1273         retval = ext2fs_write_inode(current_fs,inode_num,&inode);
1274         if (retval) {
1275                 com_err(argv[0], retval, "while writing inode");
1276                 return;
1277         }
1278
1279         unlink_file_by_name(argv[1]);
1280         if (inode.i_links_count == 0)
1281                 kill_file_by_inode(inode_num);
1282 }
1283
1284 void do_show_debugfs_params(int argc, char *argv[])
1285 {
1286         FILE *out = stdout;
1287
1288         if (current_fs)
1289                 fprintf(out, "Open mode: read-%s\n",
1290                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1291         fprintf(out, "Filesystem in use: %s\n",
1292                 current_fs ? current_fs->device_name : "--none--");
1293 }
1294
1295 void do_expand_dir(int argc, char *argv[])
1296 {
1297         ino_t inode;
1298         int retval;
1299
1300         if (argc != 2) {
1301                 com_err(argv[0], 0, "Usage: expand_dir <file>");
1302                 return;
1303         }
1304         if (check_fs_open(argv[0]))
1305                 return;
1306         inode = string_to_inode(argv[1]);
1307         if (!inode)
1308                 return;
1309
1310         retval = ext2fs_expand_dir(current_fs, inode);
1311         if (retval)
1312                 com_err("ext2fs_expand_dir", retval, "");
1313         return;
1314 }
1315
1316 static int source_file(const char *cmd_file, int sci_idx)
1317 {
1318         FILE            *f;
1319         char            buf[256];
1320         char            *cp;
1321         int             exit_status = 0;
1322         int             retval;
1323
1324         if (strcmp(cmd_file, "-") == 0)
1325                 f = stdin;
1326         else {
1327                 f = fopen(cmd_file, "r");
1328                 if (!f) {
1329                         perror(cmd_file);
1330                         exit(1);
1331                 }
1332         }
1333         setbuf(stdout, NULL);
1334         setbuf(stderr, NULL);
1335         while (!feof(f)) {
1336                 if (fgets(buf, sizeof(buf), f) == NULL)
1337                         break;
1338                 cp = strchr(buf, '\n');
1339                 if (cp)
1340                         *cp = 0;
1341                 cp = strchr(buf, '\r');
1342                 if (cp)
1343                         *cp = 0;
1344                 printf("debugfs: %s\n", buf);
1345                 retval = ss_execute_line(sci_idx, buf);
1346                 if (retval) {
1347                         ss_perror(sci_idx, retval, buf);
1348                         exit_status++;
1349                 }
1350         }
1351         return exit_status;
1352 }
1353
1354 int main(int argc, char **argv)
1355 {
1356         int             retval;
1357         int             sci_idx;
1358         const char      *usage = "Usage: debugfs [-f cmd_file] [-R request] [-V] [[-w] device]";
1359         int             c;
1360         int             open_flags = 0;
1361         char            *request = 0;
1362         int             exit_status = 0;
1363         char            *cmd_file = 0;
1364
1365         initialize_ext2_error_table();
1366         fprintf (stderr, "debugfs %s, %s for EXT2 FS %s, %s\n",
1367                  E2FSPROGS_VERSION, E2FSPROGS_DATE,
1368                  EXT2FS_VERSION, EXT2FS_DATE);
1369
1370         while ((c = getopt (argc, argv, "wR:f:V")) != EOF) {
1371                 switch (c) {
1372                 case 'R':
1373                         request = optarg;
1374                         break;
1375                 case 'f':
1376                         cmd_file = optarg;
1377                         break;
1378                 case 'w':
1379                         open_flags = EXT2_FLAG_RW;
1380                         break;
1381                 case 'V':
1382                         /* Print version number and exit */
1383                         fprintf(stderr, "\tUsing %s\n",
1384                                 error_message(EXT2_ET_BASE));
1385                         exit(0);
1386                 default:
1387                         com_err(argv[0], 0, usage);
1388                         return 1;
1389                 }
1390         }
1391         if (optind < argc)
1392                 open_filesystem(argv[optind], open_flags);
1393
1394         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1395                                        &debug_cmds, &retval);
1396         if (retval) {
1397                 ss_perror(sci_idx, retval, "creating invocation");
1398                 exit(1);
1399         }
1400
1401         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1402         if (retval) {
1403                 ss_perror(sci_idx, retval, "adding standard requests");
1404                 exit (1);
1405         }
1406         if (request) {
1407                 retval = 0;
1408                 retval = ss_execute_line(sci_idx, request);
1409                 if (retval) {
1410                         ss_perror(sci_idx, retval, request);
1411                         exit_status++;
1412                 }
1413         } else if (cmd_file) {
1414                 exit_status = source_file(cmd_file, sci_idx);
1415         } else {
1416                 ss_listen(sci_idx);
1417         }
1418
1419         if (current_fs)
1420                 close_filesystem();
1421
1422         exit(exit_status);
1423 }
1424