debugfs/debugfs.c

   1 /*
   2  * debugfs.c --- a program which allows you to attach an ext2fs
   3  * filesystem and play with it.
   4  *
   5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
   6  * under the terms of the GNU Public License.
   7  *
   8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
   9  */
  10
  11 #include <stdio.h>
  12 #include <unistd.h>
  13 #include <stdlib.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #ifdef HAVE_GETOPT_H
  18 #include <getopt.h>
  19 #else
  20 extern int optind;
  21 extern char *optarg;
  22 #endif
  23 #ifdef HAVE_ERRNO_H
  24 #include <errno.h>
  25 #endif
  26 #include <fcntl.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29
  30 #include "et/com_err.h"
  31 #include "ss/ss.h"
  32 #include "debugfs.h"
  33 #include "uuid/uuid.h"
  34 #include "e2p/e2p.h"
  35
  36 #include <ext2fs/ext2_ext_attr.h>
  37
  38 #include "../version.h"
  39
  40 extern ss_request_table debug_cmds;
  41
  42 ext2_filsys     current_fs = NULL;
  43 ext2_ino_t      root, cwd;
  44
  45 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  46                             blk_t blocksize, int catastrophic,
  47                             char *data_filename)
  48 {
  49         int     retval;
  50         io_channel data_io = 0;
  51
  52         if (superblock != 0 && blocksize == 0) {
  53                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  54                 current_fs = NULL;
  55                 return;
  56         }
  57
  58         if (data_filename) {
  59                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  60                         com_err(device, 0,
  61                                 "The -d option is only valid when reading an e2image file");
  62                         current_fs = NULL;
  63                         return;
  64                 }
  65                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  66                 if (retval) {
  67                         com_err(data_filename, 0, "while opening data source");
  68                         current_fs = NULL;
  69                         return;
  70                 }
  71         }
  72
  73         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  74                 com_err(device, 0,
  75                         "opening read-only because of catastrophic mode");
  76                 open_flags &= ~EXT2_FLAG_RW;
  77         }
  78
  79         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  80                              unix_io_manager, &current_fs);
  81         if (retval) {
  82                 com_err(device, retval, "while opening filesystem");
  83                 current_fs = NULL;
  84                 return;
  85         }
  86
  87         if (catastrophic)
  88                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  89         else {
  90                 retval = ext2fs_read_inode_bitmap(current_fs);
  91                 if (retval) {
  92                         com_err(device, retval, "while reading inode bitmap");
  93                         goto errout;
  94                 }
  95                 retval = ext2fs_read_block_bitmap(current_fs);
  96                 if (retval) {
  97                         com_err(device, retval, "while reading block bitmap");
  98                         goto errout;
  99                 }
 100         }
 101
 102         if (data_io) {
 103                 retval = ext2fs_set_data_io(current_fs, data_io);
 104                 if (retval) {
 105                         com_err(device, retval,
 106                                 "while setting data source");
 107                         goto errout;
 108                 }
 109         }
 110
 111         root = cwd = EXT2_ROOT_INO;
 112         return;
 113
 114 errout:
 115         retval = ext2fs_close(current_fs);
 116         if (retval)
 117                 com_err(device, retval, "while trying to close filesystem");
 118         current_fs = NULL;
 119 }
 120
 121 void do_open_filesys(int argc, char **argv)
 122 {
 123         int     c, err;
 124         int     catastrophic = 0;
 125         blk_t   superblock = 0;
 126         blk_t   blocksize = 0;
 127         int     open_flags = 0;
 128         char    *data_filename = 0;
 129
 130         reset_getopt();
 131         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
 132                 switch (c) {
 133                 case 'i':
 134                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 135                         break;
 136                 case 'w':
 137                         open_flags |= EXT2_FLAG_RW;
 138                         break;
 139                 case 'f':
 140                         open_flags |= EXT2_FLAG_FORCE;
 141                         break;
 142                 case 'e':
 143                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 144                         break;
 145                 case 'c':
 146                         catastrophic = 1;
 147                         break;
 148                 case 'd':
 149                         data_filename = optarg;
 150                         break;
 151                 case 'b':
 152                         blocksize = parse_ulong(optarg, argv[0],
 153                                                 "block size", &err);
 154                         if (err)
 155                                 return;
 156                         break;
 157                 case 's':
 158                         superblock = parse_ulong(optarg, argv[0],
 159                                                  "superblock number", &err);
 160                         if (err)
 161                                 return;
 162                         break;
 163                 default:
 164                         goto print_usage;
 165                 }
 166         }
 167         if (optind != argc-1) {
 168                 goto print_usage;
 169         }
 170         if (check_fs_not_open(argv[0]))
 171                 return;
 172         open_filesystem(argv[optind], open_flags,
 173                         superblock, blocksize, catastrophic,
 174                         data_filename);
 175         return;
 176
 177 print_usage:
 178         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 179                 "[-c] [-w] <device>\n", argv[0]);
 180 }
 181
 182 void do_lcd(int argc, char **argv)
 183 {
 184         if (common_args_process(argc, argv, 2, 2, "lcd",
 185                                 "<native dir>", 0))
 186                 return;
 187
 188         if (chdir(argv[1]) == -1) {
 189                 com_err(argv[0], errno,
 190                         "while trying to change native directory to %s",
 191                         argv[1]);
 192                 return;
 193         }
 194 }
 195
 196 static void close_filesystem(NOARGS)
 197 {
 198         int     retval;
 199
 200         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 201                 retval = ext2fs_write_inode_bitmap(current_fs);
 202                 if (retval)
 203                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 204         }
 205         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 206                 retval = ext2fs_write_block_bitmap(current_fs);
 207                 if (retval)
 208                         com_err("ext2fs_write_block_bitmap", retval, 0);
 209         }
 210         retval = ext2fs_close(current_fs);
 211         if (retval)
 212                 com_err("ext2fs_close", retval, 0);
 213         current_fs = NULL;
 214         return;
 215 }
 216
 217 void do_close_filesys(int argc, char **argv)
 218 {
 219         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 220                 return;
 221         close_filesystem();
 222 }
 223
 224 void do_init_filesys(int argc, char **argv)
 225 {
 226         struct ext2_super_block param;
 227         errcode_t       retval;
 228         int             err;
 229
 230         if (common_args_process(argc, argv, 3, 3, "initialize",
 231                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 232                 return;
 233
 234         memset(&param, 0, sizeof(struct ext2_super_block));
 235         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 236                                            "blocks count", &err);
 237         if (err)
 238                 return;
 239         retval = ext2fs_initialize(argv[1], 0, &param,
 240                                    unix_io_manager, &current_fs);
 241         if (retval) {
 242                 com_err(argv[1], retval, "while initializing filesystem");
 243                 current_fs = NULL;
 244                 return;
 245         }
 246         root = cwd = EXT2_ROOT_INO;
 247         return;
 248 }
 249
 250 static void print_features(struct ext2_super_block * s, FILE *f)
 251 {
 252         int     i, j, printed=0;
 253         __u32   *mask = &s->s_feature_compat, m;
 254
 255         fputs("Filesystem features:", f);
 256         for (i=0; i <3; i++,mask++) {
 257                 for (j=0,m=1; j < 32; j++, m<<=1) {
 258                         if (*mask & m) {
 259                                 fprintf(f, " %s", e2p_feature2string(i, m));
 260                                 printed++;
 261                         }
 262                 }
 263         }
 264         if (printed == 0)
 265                 fputs("(none)", f);
 266         fputs("\n", f);
 267 }
 268
 269 void do_show_super_stats(int argc, char *argv[])
 270 {
 271         dgrp_t  i;
 272         FILE    *out;
 273         struct ext2_group_desc *gdp;
 274         int     c, header_only = 0;
 275         int     numdirs = 0;
 276
 277         reset_getopt();
 278         while ((c = getopt (argc, argv, "h")) != EOF) {
 279                 switch (c) {
 280                 case 'h':
 281                         header_only++;
 282                         break;
 283                 default:
 284                         goto print_usage;
 285                 }
 286         }
 287         if (optind != argc) {
 288                 goto print_usage;
 289         }
 290         if (check_fs_open(argv[0]))
 291                 return;
 292         out = open_pager();
 293
 294         list_super2(current_fs->super, out);
 295         for (i=0; i < current_fs->group_desc_count; i++)
 296                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 297         fprintf(out, "Directories:              %d\n", numdirs);
 298
 299         if (header_only) {
 300                 close_pager(out);
 301                 return;
 302         }
 303
 304         gdp = &current_fs->group_desc[0];
 305         for (i = 0; i < current_fs->group_desc_count; i++, gdp++)
 306                 fprintf(out, " Group %2d: block bitmap at %d, "
 307                         "inode bitmap at %d, "
 308                         "inode table at %d\n"
 309                         "           %d free %s, "
 310                         "%d free %s, "
 311                         "%d used %s\n",
 312                         i, gdp->bg_block_bitmap,
 313                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 314                         gdp->bg_free_blocks_count,
 315                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 316                         gdp->bg_free_inodes_count,
 317                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 318                         gdp->bg_used_dirs_count,
 319                         gdp->bg_used_dirs_count != 1 ? "directories"
 320                                 : "directory");
 321         close_pager(out);
 322         return;
 323 print_usage:
 324         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 325 }
 326
 327 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 328                       char **argv EXT2FS_ATTR((unused)))
 329 {
 330         if (check_fs_open(argv[0]))
 331                 return;
 332         if (check_fs_read_write(argv[0]))
 333                 return;
 334
 335         if (argv[1] && !strcmp(argv[1], "-clean"))
 336                 current_fs->super->s_state |= EXT2_VALID_FS;
 337         else
 338                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 339         ext2fs_mark_super_dirty(current_fs);
 340 }
 341
 342 struct list_blocks_struct {
 343         FILE            *f;
 344         e2_blkcnt_t     total;
 345         blk_t           first_block, last_block;
 346         e2_blkcnt_t     first_bcnt, last_bcnt;
 347         e2_blkcnt_t     first;
 348 };
 349
 350 static void finish_range(struct list_blocks_struct *lb)
 351 {
 352         if (lb->first_block == 0)
 353                 return;
 354         if (lb->first)
 355                 lb->first = 0;
 356         else
 357                 fprintf(lb->f, ", ");
 358         if (lb->first_block == lb->last_block)
 359                 fprintf(lb->f, "(%lld):%d", lb->first_bcnt, lb->first_block);
 360         else
 361                 fprintf(lb->f, "(%lld-%lld):%d-%d", lb->first_bcnt,
 362                         lb->last_bcnt, lb->first_block, lb->last_block);
 363         lb->first_block = 0;
 364 }
 365
 366 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 367                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 368                             blk_t ref_block EXT2FS_ATTR((unused)),
 369                             int ref_offset EXT2FS_ATTR((unused)),
 370                             void *private)
 371 {
 372         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 373
 374         lb->total++;
 375         if (blockcnt >= 0) {
 376                 /*
 377                  * See if we can add on to the existing range (if it exists)
 378                  */
 379                 if (lb->first_block &&
 380                     (lb->last_block+1 == *blocknr) &&
 381                     (lb->last_bcnt+1 == blockcnt)) {
 382                         lb->last_block = *blocknr;
 383                         lb->last_bcnt = blockcnt;
 384                         return 0;
 385                 }
 386                 /*
 387                  * Start a new range.
 388                  */
 389                 finish_range(lb);
 390                 lb->first_block = lb->last_block = *blocknr;
 391                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 392                 return 0;
 393         }
 394         /*
 395          * Not a normal block.  Always force a new range.
 396          */
 397         finish_range(lb);
 398         if (lb->first)
 399                 lb->first = 0;
 400         else
 401                 fprintf(lb->f, ", ");
 402         if (blockcnt == -1)
 403                 fprintf(lb->f, "(IND):%d", *blocknr);
 404         else if (blockcnt == -2)
 405                 fprintf(lb->f, "(DIND):%d", *blocknr);
 406         else if (blockcnt == -3)
 407                 fprintf(lb->f, "(TIND):%d", *blocknr);
 408         return 0;
 409 }
 410
 411 static void dump_xattr_string(FILE *out, const char *str, int len)
 412 {
 413         int printable = 1;
 414         int i;
 415
 416         /* check is string printable? */
 417         for (i = 0; i < len; i++)
 418                 if (!isprint(str[i])) {
 419                         printable = 0;
 420                         break;
 421                 }
 422
 423         for (i = 0; i < len; i++)
 424                 if (printable)
 425                         fprintf(out, "%c", str[i]);
 426                 else
 427                         fprintf(out, "%02x ", str[i]);
 428 }
 429
 430 static void internal_dump_inode_extra(FILE *out, const char *prefix,
 431                                       ext2_ino_t inode_num,
 432                                       struct ext2_inode_large *inode)
 433 {
 434         struct ext2_ext_attr_entry *entry;
 435         __u32 *magic;
 436         char *start, *end;
 437         unsigned int storage_size;
 438
 439         fprintf(out, "Size of extra inode fields: %d\n", inode->i_extra_isize);
 440         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 441                         EXT2_GOOD_OLD_INODE_SIZE) {
 442                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 443                                 inode->i_extra_isize);
 444                 return;
 445         }
 446         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 447                         EXT2_GOOD_OLD_INODE_SIZE -
 448                         inode->i_extra_isize;
 449         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 450                         inode->i_extra_isize);
 451         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 452                 fprintf(out, "Extended attributes stored in inode body: \n");
 453                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 454                 start = (char *) magic + sizeof(__u32);
 455                 entry = (struct ext2_ext_attr_entry *) start;
 456                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 457                         struct ext2_ext_attr_entry *next =
 458                                 EXT2_EXT_ATTR_NEXT(entry);
 459                         if (entry->e_value_size > storage_size ||
 460                                         (char *) next >= end) {
 461                                 fprintf(out, "invalid EA entry in inode\n");
 462                                 return;
 463                         }
 464                         fprintf(out, "  ");
 465                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 466                                           entry->e_name_len);
 467                         fprintf(out, " = \"");
 468                         dump_xattr_string(out, start + entry->e_value_offs,
 469                                                 entry->e_value_size);
 470                         fprintf(out, "\" (%d)\n", entry->e_value_size);
 471                         entry = next;
 472                 }
 473         }
 474 }
 475
 476 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 477 {
 478         struct list_blocks_struct lb;
 479
 480         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 481         lb.total = 0;
 482         lb.first_block = 0;
 483         lb.f = f;
 484         lb.first = 1;
 485         ext2fs_block_iterate2(current_fs, inode, 0, NULL,
 486                              list_blocks_proc, (void *)&lb);
 487         finish_range(&lb);
 488         if (lb.total)
 489                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, lb.total);
 490         fprintf(f,"\n");
 491 }
 492
 493
 494 void internal_dump_inode(FILE *out, const char *prefix,
 495                          ext2_ino_t inode_num, struct ext2_inode *inode,
 496                          int do_dump_blocks)
 497 {
 498         const char *i_type;
 499         char frag, fsize;
 500         int os = current_fs->super->s_creator_os;
 501
 502         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 503         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 504         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 505         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 506         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 507         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 508         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 509         else i_type = "bad type";
 510         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 511         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 512                 prefix,
 513                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 514         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 515                 prefix, inode->i_uid, inode->i_gid);
 516         if (LINUX_S_ISREG(inode->i_mode)) {
 517                 __u64 i_size = (inode->i_size |
 518                                 ((unsigned long long)inode->i_size_high << 32));
 519
 520                 fprintf(out, "%lld\n", i_size);
 521         } else
 522                 fprintf(out, "%d\n", inode->i_size);
 523         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 524                 fprintf(out,
 525                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 526                         prefix,
 527                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 528                         inode->osd1.hurd1.h_i_translator);
 529         else
 530                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 531                         prefix,
 532                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 533         fprintf(out, "%sLinks: %d   Blockcount: %d\n",
 534                 prefix, inode->i_links_count, inode->i_blocks);
 535         switch (os) {
 536             case EXT2_OS_LINUX:
 537                 frag = inode->osd2.linux2.l_i_frag;
 538                 fsize = inode->osd2.linux2.l_i_fsize;
 539                 break;
 540             case EXT2_OS_HURD:
 541                 frag = inode->osd2.hurd2.h_i_frag;
 542                 fsize = inode->osd2.hurd2.h_i_fsize;
 543                 break;
 544             case EXT2_OS_MASIX:
 545                 frag = inode->osd2.masix2.m_i_frag;
 546                 fsize = inode->osd2.masix2.m_i_fsize;
 547                 break;
 548             default:
 549                 frag = fsize = 0;
 550         }
 551         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 552                 prefix, inode->i_faddr, frag, fsize);
 553         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 554                 time_to_string(inode->i_ctime));
 555         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 556                 time_to_string(inode->i_atime));
 557         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 558                 time_to_string(inode->i_mtime));
 559         if (inode->i_dtime)
 560           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 561                   time_to_string(inode->i_dtime));
 562         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 563                 internal_dump_inode_extra(out, prefix, inode_num,
 564                                           (struct ext2_inode_large *) inode);
 565         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 566                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 567                         (int) inode->i_size, (char *)inode->i_block);
 568         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 569                 int major, minor;
 570                 const char *devnote;
 571
 572                 if (inode->i_block[0]) {
 573                         major = (inode->i_block[0] >> 8) & 255;
 574                         minor = inode->i_block[0] & 255;
 575                         devnote = "";
 576                 } else {
 577                         major = (inode->i_block[1] & 0xfff00) >> 8;
 578                         minor = ((inode->i_block[1] & 0xff) |
 579                                  ((inode->i_block[1] >> 12) & 0xfff00));
 580                         devnote = "(New-style) ";
 581                 }
 582                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 583                         devnote, major, minor, major, minor);
 584         }
 585         else if (do_dump_blocks)
 586                 dump_blocks(out, prefix, inode_num);
 587 }
 588
 589 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 590 {
 591         FILE    *out;
 592
 593         out = open_pager();
 594         internal_dump_inode(out, "", inode_num, inode, 1);
 595         close_pager(out);
 596 }
 597
 598 void do_stat(int argc, char *argv[])
 599 {
 600         ext2_ino_t      inode;
 601         struct ext2_inode * inode_buf;
 602
 603         if (check_fs_open(argv[0]))
 604                 return;
 605
 606         inode_buf = (struct ext2_inode *)
 607                         malloc(EXT2_INODE_SIZE(current_fs->super));
 608         if (!inode_buf) {
 609                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 610                 return;
 611         }
 612
 613         if (common_inode_args_process(argc, argv, &inode, 0)) {
 614                 free(inode_buf);
 615                 return;
 616         }
 617
 618         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 619                                         EXT2_INODE_SIZE(current_fs->super))) {
 620                 free(inode_buf);
 621                 return;
 622         }
 623
 624         dump_inode(inode, inode_buf);
 625         free(inode_buf);
 626         return;
 627 }
 628
 629 void do_chroot(int argc, char *argv[])
 630 {
 631         ext2_ino_t inode;
 632         int retval;
 633
 634         if (common_inode_args_process(argc, argv, &inode, 0))
 635                 return;
 636
 637         retval = ext2fs_check_directory(current_fs, inode);
 638         if (retval)  {
 639                 com_err(argv[1], retval, 0);
 640                 return;
 641         }
 642         root = inode;
 643 }
 644
 645 void do_clri(int argc, char *argv[])
 646 {
 647         ext2_ino_t inode;
 648         struct ext2_inode inode_buf;
 649
 650         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 651                 return;
 652
 653         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 654                 return;
 655         memset(&inode_buf, 0, sizeof(inode_buf));
 656         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 657                 return;
 658 }
 659
 660 void do_freei(int argc, char *argv[])
 661 {
 662         ext2_ino_t inode;
 663
 664         if (common_inode_args_process(argc, argv, &inode,
 665                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 666                 return;
 667
 668         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 669                 com_err(argv[0], 0, "Warning: inode already clear");
 670         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 671         ext2fs_mark_ib_dirty(current_fs);
 672 }
 673
 674 void do_seti(int argc, char *argv[])
 675 {
 676         ext2_ino_t inode;
 677
 678         if (common_inode_args_process(argc, argv, &inode,
 679                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 680                 return;
 681
 682         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 683                 com_err(argv[0], 0, "Warning: inode already set");
 684         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 685         ext2fs_mark_ib_dirty(current_fs);
 686 }
 687
 688 void do_testi(int argc, char *argv[])
 689 {
 690         ext2_ino_t inode;
 691
 692         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 693                 return;
 694
 695         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 696                 printf("Inode %u is marked in use\n", inode);
 697         else
 698                 printf("Inode %u is not in use\n", inode);
 699 }
 700
 701 void do_freeb(int argc, char *argv[])
 702 {
 703         blk_t block;
 704         int count = 1;
 705
 706         if (common_block_args_process(argc, argv, &block, &count))
 707                 return;
 708         if (check_fs_read_write(argv[0]))
 709                 return;
 710         while (count-- > 0) {
 711                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 712                         com_err(argv[0], 0, "Warning: block %d already clear",
 713                                 block);
 714                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 715                 block++;
 716         }
 717         ext2fs_mark_bb_dirty(current_fs);
 718 }
 719
 720 void do_setb(int argc, char *argv[])
 721 {
 722         blk_t block;
 723         int count = 1;
 724
 725         if (common_block_args_process(argc, argv, &block, &count))
 726                 return;
 727         if (check_fs_read_write(argv[0]))
 728                 return;
 729         while (count-- > 0) {
 730                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 731                         com_err(argv[0], 0, "Warning: block %d already set",
 732                                 block);
 733                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 734                 block++;
 735         }
 736         ext2fs_mark_bb_dirty(current_fs);
 737 }
 738
 739 void do_testb(int argc, char *argv[])
 740 {
 741         blk_t block;
 742         int count = 1;
 743
 744         if (common_block_args_process(argc, argv, &block, &count))
 745                 return;
 746         while (count-- > 0) {
 747                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 748                         printf("Block %d marked in use\n", block);
 749                 else
 750                         printf("Block %d not in use\n", block);
 751                 block++;
 752         }
 753 }
 754
 755 static void modify_u8(char *com, const char *prompt,
 756                       const char *format, __u8 *val)
 757 {
 758         char buf[200];
 759         unsigned long v;
 760         char *tmp;
 761
 762         sprintf(buf, format, *val);
 763         printf("%30s    [%s] ", prompt, buf);
 764         fgets(buf, sizeof(buf), stdin);
 765         if (buf[strlen (buf) - 1] == '\n')
 766                 buf[strlen (buf) - 1] = '\0';
 767         if (!buf[0])
 768                 return;
 769         v = strtoul(buf, &tmp, 0);
 770         if (*tmp)
 771                 com_err(com, 0, "Bad value - %s", buf);
 772         else
 773                 *val = v;
 774 }
 775
 776 static void modify_u16(char *com, const char *prompt,
 777                        const char *format, __u16 *val)
 778 {
 779         char buf[200];
 780         unsigned long v;
 781         char *tmp;
 782
 783         sprintf(buf, format, *val);
 784         printf("%30s    [%s] ", prompt, buf);
 785         fgets(buf, sizeof(buf), stdin);
 786         if (buf[strlen (buf) - 1] == '\n')
 787                 buf[strlen (buf) - 1] = '\0';
 788         if (!buf[0])
 789                 return;
 790         v = strtoul(buf, &tmp, 0);
 791         if (*tmp)
 792                 com_err(com, 0, "Bad value - %s", buf);
 793         else
 794                 *val = v;
 795 }
 796
 797 static void modify_u32(char *com, const char *prompt,
 798                        const char *format, __u32 *val)
 799 {
 800         char buf[200];
 801         unsigned long v;
 802         char *tmp;
 803
 804         sprintf(buf, format, *val);
 805         printf("%30s    [%s] ", prompt, buf);
 806         fgets(buf, sizeof(buf), stdin);
 807         if (buf[strlen (buf) - 1] == '\n')
 808                 buf[strlen (buf) - 1] = '\0';
 809         if (!buf[0])
 810                 return;
 811         v = strtoul(buf, &tmp, 0);
 812         if (*tmp)
 813                 com_err(com, 0, "Bad value - %s", buf);
 814         else
 815                 *val = v;
 816 }
 817
 818
 819 void do_modify_inode(int argc, char *argv[])
 820 {
 821         struct ext2_inode inode;
 822         ext2_ino_t      inode_num;
 823         int             i;
 824         unsigned char   *frag, *fsize;
 825         char            buf[80];
 826         int             os;
 827         const char      *hex_format = "0x%x";
 828         const char      *octal_format = "0%o";
 829         const char      *decimal_format = "%d";
 830
 831         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 832                 return;
 833
 834         os = current_fs->super->s_creator_os;
 835
 836         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 837                 return;
 838
 839         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 840         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 841         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 842         modify_u32(argv[0], "Size", decimal_format, &inode.i_size);
 843         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 844         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 845         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 846         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 847         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 848         modify_u32(argv[0], "Block count", decimal_format, &inode.i_blocks);
 849         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 850         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 851 #if 0
 852         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 853 #endif
 854         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 855         if (LINUX_S_ISDIR(inode.i_mode))
 856                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 857         else
 858                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 859
 860         if (current_fs->super->s_creator_os == EXT2_OS_HURD)
 861                 modify_u32(argv[0], "Translator Block",
 862                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 863
 864         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 865         switch (os) {
 866             case EXT2_OS_LINUX:
 867                 frag = &inode.osd2.linux2.l_i_frag;
 868                 fsize = &inode.osd2.linux2.l_i_fsize;
 869                 break;
 870             case EXT2_OS_HURD:
 871                 frag = &inode.osd2.hurd2.h_i_frag;
 872                 fsize = &inode.osd2.hurd2.h_i_fsize;
 873                 break;
 874             case EXT2_OS_MASIX:
 875                 frag = &inode.osd2.masix2.m_i_frag;
 876                 fsize = &inode.osd2.masix2.m_i_fsize;
 877                 break;
 878             default:
 879                 frag = fsize = 0;
 880         }
 881         if (frag)
 882                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 883         if (fsize)
 884                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 885
 886         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 887                 sprintf(buf, "Direct Block #%d", i);
 888                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 889         }
 890         modify_u32(argv[0], "Indirect Block", decimal_format,
 891                     &inode.i_block[EXT2_IND_BLOCK]);
 892         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 893                     &inode.i_block[EXT2_DIND_BLOCK]);
 894         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 895                     &inode.i_block[EXT2_TIND_BLOCK]);
 896         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 897                 return;
 898 }
 899
 900 void do_change_working_dir(int argc, char *argv[])
 901 {
 902         ext2_ino_t      inode;
 903         int             retval;
 904
 905         if (common_inode_args_process(argc, argv, &inode, 0))
 906                 return;
 907
 908         retval = ext2fs_check_directory(current_fs, inode);
 909         if (retval) {
 910                 com_err(argv[1], retval, 0);
 911                 return;
 912         }
 913         cwd = inode;
 914         return;
 915 }
 916
 917 void do_print_working_directory(int argc, char *argv[])
 918 {
 919         int     retval;
 920         char    *pathname = NULL;
 921
 922         if (common_args_process(argc, argv, 1, 1,
 923                                 "print_working_directory", "", 0))
 924                 return;
 925
 926         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 927         if (retval) {
 928                 com_err(argv[0], retval,
 929                         "while trying to get pathname of cwd");
 930         }
 931         printf("[pwd]   INODE: %6u  PATH: %s\n", cwd, pathname);
 932         free(pathname);
 933         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 934         if (retval) {
 935                 com_err(argv[0], retval,
 936                         "while trying to get pathname of root");
 937         }
 938         printf("[root]  INODE: %6u  PATH: %s\n", root, pathname);
 939         free(pathname);
 940         return;
 941 }
 942
 943 /*
 944  * Given a mode, return the ext2 file type
 945  */
 946 static int ext2_file_type(unsigned int mode)
 947 {
 948         if (LINUX_S_ISREG(mode))
 949                 return EXT2_FT_REG_FILE;
 950
 951         if (LINUX_S_ISDIR(mode))
 952                 return EXT2_FT_DIR;
 953
 954         if (LINUX_S_ISCHR(mode))
 955                 return EXT2_FT_CHRDEV;
 956
 957         if (LINUX_S_ISBLK(mode))
 958                 return EXT2_FT_BLKDEV;
 959
 960         if (LINUX_S_ISLNK(mode))
 961                 return EXT2_FT_SYMLINK;
 962
 963         if (LINUX_S_ISFIFO(mode))
 964                 return EXT2_FT_FIFO;
 965
 966         if (LINUX_S_ISSOCK(mode))
 967                 return EXT2_FT_SOCK;
 968
 969         return 0;
 970 }
 971
 972 static void make_link(char *sourcename, char *destname)
 973 {
 974         ext2_ino_t      ino;
 975         struct ext2_inode inode;
 976         int             retval;
 977         ext2_ino_t      dir;
 978         char            *dest, *cp, *basename;
 979
 980         /*
 981          * Get the source inode
 982          */
 983         ino = string_to_inode(sourcename);
 984         if (!ino)
 985                 return;
 986         basename = strrchr(sourcename, '/');
 987         if (basename)
 988                 basename++;
 989         else
 990                 basename = sourcename;
 991         /*
 992          * Figure out the destination.  First see if it exists and is
 993          * a directory.
 994          */
 995         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
 996                 dest = basename;
 997         else {
 998                 /*
 999                  * OK, it doesn't exist.  See if it is
1000                  * '<dir>/basename' or 'basename'
1001                  */
1002                 cp = strrchr(destname, '/');
1003                 if (cp) {
1004                         *cp = 0;
1005                         dir = string_to_inode(destname);
1006                         if (!dir)
1007                                 return;
1008                         dest = cp+1;
1009                 } else {
1010                         dir = cwd;
1011                         dest = destname;
1012                 }
1013         }
1014
1015         if (debugfs_read_inode(ino, &inode, sourcename))
1016                 return;
1017
1018         retval = ext2fs_link(current_fs, dir, dest, ino,
1019                              ext2_file_type(inode.i_mode));
1020         if (retval)
1021                 com_err("make_link", retval, 0);
1022         return;
1023 }
1024
1025
1026 void do_link(int argc, char *argv[])
1027 {
1028         if (common_args_process(argc, argv, 3, 3, "link",
1029                                 "<source file> <dest_name>", CHECK_FS_RW))
1030                 return;
1031
1032         make_link(argv[1], argv[2]);
1033 }
1034
1035 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1036                             int blockcnt EXT2FS_ATTR((unused)),
1037                             void *private EXT2FS_ATTR((unused)))
1038 {
1039         blk_t   block;
1040
1041         block = *blocknr;
1042         ext2fs_block_alloc_stats(fs, block, +1);
1043         return 0;
1044 }
1045
1046 void do_undel(int argc, char *argv[])
1047 {
1048         ext2_ino_t      ino;
1049         struct ext2_inode inode;
1050
1051         if (common_args_process(argc, argv, 3, 3, "undelete",
1052                                 "<inode_num> <dest_name>",
1053                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1054                 return;
1055
1056         ino = string_to_inode(argv[1]);
1057         if (!ino)
1058                 return;
1059
1060         if (debugfs_read_inode(ino, &inode, argv[1]))
1061                 return;
1062
1063         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1064                 com_err(argv[1], 0, "Inode is not marked as deleted");
1065                 return;
1066         }
1067
1068         /*
1069          * XXX this function doesn't handle changing the links count on the
1070          * parent directory when undeleting a directory.
1071          */
1072         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1073         inode.i_dtime = 0;
1074
1075         if (debugfs_write_inode(ino, &inode, argv[0]))
1076                 return;
1077
1078         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1079                              mark_blocks_proc, NULL);
1080
1081         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1082
1083         make_link(argv[1], argv[2]);
1084 }
1085
1086 static void unlink_file_by_name(char *filename)
1087 {
1088         int             retval;
1089         ext2_ino_t      dir;
1090         char            *basename;
1091
1092         basename = strrchr(filename, '/');
1093         if (basename) {
1094                 *basename++ = '\0';
1095                 dir = string_to_inode(filename);
1096                 if (!dir)
1097                         return;
1098         } else {
1099                 dir = cwd;
1100                 basename = filename;
1101         }
1102         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1103         if (retval)
1104                 com_err("unlink_file_by_name", retval, 0);
1105         return;
1106 }
1107
1108 void do_unlink(int argc, char *argv[])
1109 {
1110         if (common_args_process(argc, argv, 2, 2, "link",
1111                                 "<pathname>", CHECK_FS_RW))
1112                 return;
1113
1114         unlink_file_by_name(argv[1]);
1115 }
1116
1117 void do_find_free_block(int argc, char *argv[])
1118 {
1119         blk_t   free_blk, goal;
1120         int             count;
1121         errcode_t       retval;
1122         char            *tmp;
1123
1124         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1125                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1126                 return;
1127         }
1128         if (check_fs_open(argv[0]))
1129                 return;
1130
1131         if (argc > 1) {
1132                 count = strtol(argv[1],&tmp,0);
1133                 if (*tmp) {
1134                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1135                         return;
1136                 }
1137         } else
1138                 count = 1;
1139
1140         if (argc > 2) {
1141                 goal = strtol(argv[2], &tmp, 0);
1142                 if (*tmp) {
1143                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1144                         return;
1145                 }
1146         }
1147         else
1148                 goal = current_fs->super->s_first_data_block;
1149
1150         printf("Free blocks found: ");
1151         free_blk = goal - 1;
1152         while (count-- > 0) {
1153                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1154                                           &free_blk);
1155                 if (retval) {
1156                         com_err("ext2fs_new_block", retval, 0);
1157                         return;
1158                 } else
1159                         printf("%d ", free_blk);
1160         }
1161         printf("\n");
1162 }
1163
1164 void do_find_free_inode(int argc, char *argv[])
1165 {
1166         ext2_ino_t      free_inode, dir;
1167         int             mode;
1168         int             retval;
1169         char            *tmp;
1170
1171         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1172                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1173                 return;
1174         }
1175         if (check_fs_open(argv[0]))
1176                 return;
1177
1178         if (argc > 1) {
1179                 dir = strtol(argv[1], &tmp, 0);
1180                 if (*tmp) {
1181                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1182                         return;
1183                 }
1184         }
1185         else
1186                 dir = root;
1187         if (argc > 2) {
1188                 mode = strtol(argv[2], &tmp, 0);
1189                 if (*tmp) {
1190                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1191                         return;
1192                 }
1193         } else
1194                 mode = 010755;
1195
1196         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1197         if (retval)
1198                 com_err("ext2fs_new_inode", retval, 0);
1199         else
1200                 printf("Free inode found: %u\n", free_inode);
1201 }
1202
1203 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1204 {
1205         ext2_file_t     e2_file;
1206         errcode_t       retval;
1207         int             got;
1208         unsigned int    written;
1209         char            buf[8192];
1210         char            *ptr;
1211
1212         retval = ext2fs_file_open(current_fs, newfile,
1213                                   EXT2_FILE_WRITE, &e2_file);
1214         if (retval)
1215                 return retval;
1216
1217         while (1) {
1218                 got = read(fd, buf, sizeof(buf));
1219                 if (got == 0)
1220                         break;
1221                 if (got < 0) {
1222                         retval = errno;
1223                         goto fail;
1224                 }
1225                 ptr = buf;
1226                 while (got > 0) {
1227                         retval = ext2fs_file_write(e2_file, ptr,
1228                                                    got, &written);
1229                         if (retval)
1230                                 goto fail;
1231
1232                         got -= written;
1233                         ptr += written;
1234                 }
1235         }
1236         retval = ext2fs_file_close(e2_file);
1237         return retval;
1238
1239 fail:
1240         (void) ext2fs_file_close(e2_file);
1241         return retval;
1242 }
1243
1244
1245 void do_write(int argc, char *argv[])
1246 {
1247         int             fd;
1248         struct stat     statbuf;
1249         ext2_ino_t      newfile;
1250         errcode_t       retval;
1251         struct ext2_inode inode;
1252
1253         if (common_args_process(argc, argv, 3, 3, "write",
1254                                 "<native file> <new file>", CHECK_FS_RW))
1255                 return;
1256
1257         fd = open(argv[1], O_RDONLY);
1258         if (fd < 0) {
1259                 com_err(argv[1], errno, 0);
1260                 return;
1261         }
1262         if (fstat(fd, &statbuf) < 0) {
1263                 com_err(argv[1], errno, 0);
1264                 close(fd);
1265                 return;
1266         }
1267
1268         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1269         if (retval == 0) {
1270                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1271                 close(fd);
1272                 return;
1273         }
1274
1275         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1276         if (retval) {
1277                 com_err(argv[0], retval, 0);
1278                 close(fd);
1279                 return;
1280         }
1281         printf("Allocated inode: %u\n", newfile);
1282         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1283                              EXT2_FT_REG_FILE);
1284         if (retval == EXT2_ET_DIR_NO_SPACE) {
1285                 retval = ext2fs_expand_dir(current_fs, cwd);
1286                 if (retval) {
1287                         com_err(argv[0], retval, "while expanding directory");
1288                         return;
1289                 }
1290                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1291                                      EXT2_FT_REG_FILE);
1292         }
1293         if (retval) {
1294                 com_err(argv[2], retval, 0);
1295                 close(fd);
1296                 return;
1297         }
1298         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1299                 com_err(argv[0], 0, "Warning: inode already set");
1300         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1301         memset(&inode, 0, sizeof(inode));
1302         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1303         inode.i_atime = inode.i_ctime = inode.i_mtime =
1304                 current_fs->now ? current_fs->now : time(0);
1305         inode.i_links_count = 1;
1306         inode.i_size = statbuf.st_size;
1307         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1308                 close(fd);
1309                 return;
1310         }
1311         if (LINUX_S_ISREG(inode.i_mode)) {
1312                 retval = copy_file(fd, newfile);
1313                 if (retval)
1314                         com_err("copy_file", retval, 0);
1315         }
1316         close(fd);
1317 }
1318
1319 void do_mknod(int argc, char *argv[])
1320 {
1321         unsigned long   mode, major, minor;
1322         ext2_ino_t      newfile;
1323         errcode_t       retval;
1324         struct ext2_inode inode;
1325         int             filetype, nr;
1326
1327         if (check_fs_open(argv[0]))
1328                 return;
1329         if (argc < 3 || argv[2][1]) {
1330         usage:
1331                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1332                 return;
1333         }
1334         mode = minor = major = 0;
1335         switch (argv[2][0]) {
1336                 case 'p':
1337                         mode = LINUX_S_IFIFO;
1338                         filetype = EXT2_FT_FIFO;
1339                         nr = 3;
1340                         break;
1341                 case 'c':
1342                         mode = LINUX_S_IFCHR;
1343                         filetype = EXT2_FT_CHRDEV;
1344                         nr = 5;
1345                         break;
1346                 case 'b':
1347                         mode = LINUX_S_IFBLK;
1348                         filetype = EXT2_FT_BLKDEV;
1349                         nr = 5;
1350                         break;
1351                 default:
1352                         filetype = 0;
1353                         nr = 0;
1354         }
1355         if (nr == 5) {
1356                 major = strtoul(argv[3], argv+3, 0);
1357                 minor = strtoul(argv[4], argv+4, 0);
1358                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1359                         nr = 0;
1360         }
1361         if (argc != nr)
1362                 goto usage;
1363         if (check_fs_read_write(argv[0]))
1364                 return;
1365         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1366         if (retval) {
1367                 com_err(argv[0], retval, 0);
1368                 return;
1369         }
1370         printf("Allocated inode: %u\n", newfile);
1371         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1372         if (retval == EXT2_ET_DIR_NO_SPACE) {
1373                 retval = ext2fs_expand_dir(current_fs, cwd);
1374                 if (retval) {
1375                         com_err(argv[0], retval, "while expanding directory");
1376                         return;
1377                 }
1378                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1379                                      filetype);
1380         }
1381         if (retval) {
1382                 com_err(argv[1], retval, 0);
1383                 return;
1384         }
1385         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1386                 com_err(argv[0], 0, "Warning: inode already set");
1387         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1388         ext2fs_mark_ib_dirty(current_fs);
1389         memset(&inode, 0, sizeof(inode));
1390         inode.i_mode = mode;
1391         inode.i_atime = inode.i_ctime = inode.i_mtime =
1392                 current_fs->now ? current_fs->now : time(0);
1393         if ((major < 256) && (minor < 256)) {
1394                 inode.i_block[0] = major*256+minor;
1395                 inode.i_block[1] = 0;
1396         } else {
1397                 inode.i_block[0] = 0;
1398                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1399         }
1400         inode.i_links_count = 1;
1401         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1402                 return;
1403 }
1404
1405 void do_mkdir(int argc, char *argv[])
1406 {
1407         char    *cp;
1408         ext2_ino_t      parent;
1409         char    *name;
1410         errcode_t retval;
1411
1412         if (common_args_process(argc, argv, 2, 2, "mkdir",
1413                                 "<filename>", CHECK_FS_RW))
1414                 return;
1415
1416         cp = strrchr(argv[1], '/');
1417         if (cp) {
1418                 *cp = 0;
1419                 parent = string_to_inode(argv[1]);
1420                 if (!parent) {
1421                         com_err(argv[1], ENOENT, 0);
1422                         return;
1423                 }
1424                 name = cp+1;
1425         } else {
1426                 parent = cwd;
1427                 name = argv[1];
1428         }
1429
1430 try_again:
1431         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1432         if (retval == EXT2_ET_DIR_NO_SPACE) {
1433                 retval = ext2fs_expand_dir(current_fs, parent);
1434                 if (retval) {
1435                         com_err("argv[0]", retval, "while expanding directory");
1436                         return;
1437                 }
1438                 goto try_again;
1439         }
1440         if (retval) {
1441                 com_err("ext2fs_mkdir", retval, 0);
1442                 return;
1443         }
1444
1445 }
1446
1447 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1448                                int blockcnt EXT2FS_ATTR((unused)),
1449                                void *private EXT2FS_ATTR((unused)))
1450 {
1451         blk_t   block;
1452
1453         block = *blocknr;
1454         ext2fs_block_alloc_stats(fs, block, -1);
1455         return 0;
1456 }
1457
1458 static void kill_file_by_inode(ext2_ino_t inode)
1459 {
1460         struct ext2_inode inode_buf;
1461
1462         if (debugfs_read_inode(inode, &inode_buf, 0))
1463                 return;
1464         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1465         if (debugfs_write_inode(inode, &inode_buf, 0))
1466                 return;
1467         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1468                 return;
1469
1470         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1471                              release_blocks_proc, NULL);
1472         printf("\n");
1473         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1474                                   LINUX_S_ISDIR(inode_buf.i_mode));
1475 }
1476
1477
1478 void do_kill_file(int argc, char *argv[])
1479 {
1480         ext2_ino_t inode_num;
1481
1482         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1483                 return;
1484
1485         kill_file_by_inode(inode_num);
1486 }
1487
1488 void do_rm(int argc, char *argv[])
1489 {
1490         int retval;
1491         ext2_ino_t inode_num;
1492         struct ext2_inode inode;
1493
1494         if (common_args_process(argc, argv, 2, 2, "rm",
1495                                 "<filename>", CHECK_FS_RW))
1496                 return;
1497
1498         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1499         if (retval) {
1500                 com_err(argv[0], retval, "while trying to resolve filename");
1501                 return;
1502         }
1503
1504         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1505                 return;
1506
1507         if (LINUX_S_ISDIR(inode.i_mode)) {
1508                 com_err(argv[0], 0, "file is a directory");
1509                 return;
1510         }
1511
1512         --inode.i_links_count;
1513         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1514                 return;
1515
1516         unlink_file_by_name(argv[1]);
1517         if (inode.i_links_count == 0)
1518                 kill_file_by_inode(inode_num);
1519 }
1520
1521 struct rd_struct {
1522         ext2_ino_t      parent;
1523         int             empty;
1524 };
1525
1526 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1527                       int       entry EXT2FS_ATTR((unused)),
1528                       struct ext2_dir_entry *dirent,
1529                       int       offset EXT2FS_ATTR((unused)),
1530                       int       blocksize EXT2FS_ATTR((unused)),
1531                       char      *buf EXT2FS_ATTR((unused)),
1532                       void      *private)
1533 {
1534         struct rd_struct *rds = (struct rd_struct *) private;
1535
1536         if (dirent->inode == 0)
1537                 return 0;
1538         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1539                 return 0;
1540         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1541             (dirent->name[1] == '.')) {
1542                 rds->parent = dirent->inode;
1543                 return 0;
1544         }
1545         rds->empty = 0;
1546         return 0;
1547 }
1548
1549 void do_rmdir(int argc, char *argv[])
1550 {
1551         int retval;
1552         ext2_ino_t inode_num;
1553         struct ext2_inode inode;
1554         struct rd_struct rds;
1555
1556         if (common_args_process(argc, argv, 2, 2, "rmdir",
1557                                 "<filename>", CHECK_FS_RW))
1558                 return;
1559
1560         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1561         if (retval) {
1562                 com_err(argv[0], retval, "while trying to resolve filename");
1563                 return;
1564         }
1565
1566         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1567                 return;
1568
1569         if (!LINUX_S_ISDIR(inode.i_mode)) {
1570                 com_err(argv[0], 0, "file is not a directory");
1571                 return;
1572         }
1573
1574         rds.parent = 0;
1575         rds.empty = 1;
1576
1577         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1578                                     0, rmdir_proc, &rds);
1579         if (retval) {
1580                 com_err(argv[0], retval, "while iterating over directory");
1581                 return;
1582         }
1583         if (rds.empty == 0) {
1584                 com_err(argv[0], 0, "directory not empty");
1585                 return;
1586         }
1587
1588         inode.i_links_count = 0;
1589         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1590                 return;
1591
1592         unlink_file_by_name(argv[1]);
1593         kill_file_by_inode(inode_num);
1594
1595         if (rds.parent) {
1596                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1597                         return;
1598                 if (inode.i_links_count > 1)
1599                         inode.i_links_count--;
1600                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1601                         return;
1602         }
1603 }
1604
1605 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1606                             char *argv[] EXT2FS_ATTR((unused)))
1607 {
1608         FILE *out = stdout;
1609
1610         if (current_fs)
1611                 fprintf(out, "Open mode: read-%s\n",
1612                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1613         fprintf(out, "Filesystem in use: %s\n",
1614                 current_fs ? current_fs->device_name : "--none--");
1615 }
1616
1617 void do_expand_dir(int argc, char *argv[])
1618 {
1619         ext2_ino_t inode;
1620         int retval;
1621
1622         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1623                 return;
1624
1625         retval = ext2fs_expand_dir(current_fs, inode);
1626         if (retval)
1627                 com_err("ext2fs_expand_dir", retval, 0);
1628         return;
1629 }
1630
1631 void do_features(int argc, char *argv[])
1632 {
1633         int     i;
1634
1635         if (check_fs_open(argv[0]))
1636                 return;
1637
1638         if ((argc != 1) && check_fs_read_write(argv[0]))
1639                 return;
1640         for (i=1; i < argc; i++) {
1641                 if (e2p_edit_feature(argv[i],
1642                                      &current_fs->super->s_feature_compat, 0))
1643                         com_err(argv[0], 0, "Unknown feature: %s\n",
1644                                 argv[i]);
1645                 else
1646                         ext2fs_mark_super_dirty(current_fs);
1647         }
1648         print_features(current_fs->super, stdout);
1649 }
1650
1651 void do_bmap(int argc, char *argv[])
1652 {
1653         ext2_ino_t      ino;
1654         blk_t           blk, pblk;
1655         int             err;
1656         errcode_t       errcode;
1657
1658         if (common_args_process(argc, argv, 3, 3, argv[0],
1659                                 "<file> logical_blk", 0))
1660                 return;
1661
1662         ino = string_to_inode(argv[1]);
1663         if (!ino)
1664                 return;
1665         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1666
1667         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1668         if (errcode) {
1669                 com_err("argv[0]", errcode,
1670                         "while mapping logical block %d\n", blk);
1671                 return;
1672         }
1673         printf("%d\n", pblk);
1674 }
1675
1676 void do_imap(int argc, char *argv[])
1677 {
1678         ext2_ino_t      ino;
1679         unsigned long   group, block, block_nr, offset;
1680
1681         if (common_args_process(argc, argv, 2, 2, argv[0],
1682                                 "<file>", 0))
1683                 return;
1684         ino = string_to_inode(argv[1]);
1685         if (!ino)
1686                 return;
1687
1688         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1689         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1690                 EXT2_INODE_SIZE(current_fs->super);
1691         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1692         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1693                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1694                         group);
1695                 return;
1696         }
1697         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1698                 block;
1699         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1700
1701         printf("Inode %d is part of block group %lu\n"
1702                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1703                block_nr, offset);
1704
1705 }
1706
1707 void do_set_current_time(int argc, char *argv[])
1708 {
1709         time_t now;
1710
1711         if (common_args_process(argc, argv, 2, 2, argv[0],
1712                                 "<time>", 0))
1713                 return;
1714
1715         now = string_to_time(argv[1]);
1716         if (now == ((time_t) -1)) {
1717                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1718                         argv[1]);
1719                 return;
1720
1721         } else {
1722                 printf("Setting current time to %s\n", time_to_string(now));
1723                 current_fs->now = now;
1724         }
1725 }
1726
1727 static int source_file(const char *cmd_file, int sci_idx)
1728 {
1729         FILE            *f;
1730         char            buf[256];
1731         char            *cp;
1732         int             exit_status = 0;
1733         int             retval;
1734
1735         if (strcmp(cmd_file, "-") == 0)
1736                 f = stdin;
1737         else {
1738                 f = fopen(cmd_file, "r");
1739                 if (!f) {
1740                         perror(cmd_file);
1741                         exit(1);
1742                 }
1743         }
1744         setbuf(stdout, NULL);
1745         setbuf(stderr, NULL);
1746         while (!feof(f)) {
1747                 if (fgets(buf, sizeof(buf), f) == NULL)
1748                         break;
1749                 cp = strchr(buf, '\n');
1750                 if (cp)
1751                         *cp = 0;
1752                 cp = strchr(buf, '\r');
1753                 if (cp)
1754                         *cp = 0;
1755                 printf("debugfs: %s\n", buf);
1756                 retval = ss_execute_line(sci_idx, buf);
1757                 if (retval) {
1758                         ss_perror(sci_idx, retval, buf);
1759                         exit_status++;
1760                 }
1761         }
1762         return exit_status;
1763 }
1764
1765 int main(int argc, char **argv)
1766 {
1767         int             retval;
1768         int             sci_idx;
1769         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1770         int             c;
1771         int             open_flags = 0;
1772         char            *request = 0;
1773         int             exit_status = 0;
1774         char            *cmd_file = 0;
1775         blk_t           superblock = 0;
1776         blk_t           blocksize = 0;
1777         int             catastrophic = 0;
1778         char            *data_filename = 0;
1779
1780         initialize_ext2_error_table();
1781         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1782                  E2FSPROGS_DATE);
1783
1784         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1785                 switch (c) {
1786                 case 'R':
1787                         request = optarg;
1788                         break;
1789                 case 'f':
1790                         cmd_file = optarg;
1791                         break;
1792                 case 'd':
1793                         data_filename = optarg;
1794                         break;
1795                 case 'i':
1796                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1797                         break;
1798                 case 'w':
1799                         open_flags |= EXT2_FLAG_RW;
1800                         break;
1801                 case 'b':
1802                         blocksize = parse_ulong(optarg, argv[0],
1803                                                 "block size", 0);
1804                         break;
1805                 case 's':
1806                         superblock = parse_ulong(optarg, argv[0],
1807                                                  "superblock number", 0);
1808                         break;
1809                 case 'c':
1810                         catastrophic = 1;
1811                         break;
1812                 case 'V':
1813                         /* Print version number and exit */
1814                         fprintf(stderr, "\tUsing %s\n",
1815                                 error_message(EXT2_ET_BASE));
1816                         exit(0);
1817                 default:
1818                         com_err(argv[0], 0, usage);
1819                         return 1;
1820                 }
1821         }
1822         if (optind < argc)
1823                 open_filesystem(argv[optind], open_flags,
1824                                 superblock, blocksize, catastrophic,
1825                                 data_filename);
1826
1827         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1828                                        &debug_cmds, &retval);
1829         if (retval) {
1830                 ss_perror(sci_idx, retval, "creating invocation");
1831                 exit(1);
1832         }
1833         ss_get_readline(sci_idx);
1834
1835         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1836         if (retval) {
1837                 ss_perror(sci_idx, retval, "adding standard requests");
1838                 exit (1);
1839         }
1840         if (request) {
1841                 retval = 0;
1842                 retval = ss_execute_line(sci_idx, request);
1843                 if (retval) {
1844                         ss_perror(sci_idx, retval, request);
1845                         exit_status++;
1846                 }
1847         } else if (cmd_file) {
1848                 exit_status = source_file(cmd_file, sci_idx);
1849         } else {
1850                 ss_listen(sci_idx);
1851         }
1852
1853         if (current_fs)
1854                 close_filesystem();
1855
1856         return exit_status;
1857 }