debugfs/debugfs.c

   1 /*
   2  * debugfs.c --- a program which allows you to attach an ext2fs
   3  * filesystem and play with it.
   4  *
   5  * Copyright (C) 1993 Theodore Ts'o.  This file may be redistributed
   6  * under the terms of the GNU Public License.
   7  *
   8  * Modifications by Robert Sanders <gt8134b@prism.gatech.edu>
   9  */
  10
  11 #include <stdio.h>
  12 #include <unistd.h>
  13 #include <stdlib.h>
  14 #include <ctype.h>
  15 #include <string.h>
  16 #include <time.h>
  17 #ifdef HAVE_GETOPT_H
  18 #include <getopt.h>
  19 #else
  20 extern int optind;
  21 extern char *optarg;
  22 #endif
  23 #ifdef HAVE_ERRNO_H
  24 #include <errno.h>
  25 #endif
  26 #include <fcntl.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29
  30 #include "et/com_err.h"
  31 #include "ss/ss.h"
  32 #include "debugfs.h"
  33 #include "uuid/uuid.h"
  34 #include "e2p/e2p.h"
  35
  36 #include <ext2fs/ext2_ext_attr.h>
  37
  38 #include "../version.h"
  39
  40 extern ss_request_table debug_cmds;
  41 ss_request_table *extra_cmds;
  42 char *debug_prog_name;
  43
  44 ext2_filsys     current_fs = NULL;
  45 ext2_ino_t      root, cwd;
  46
  47 static void open_filesystem(char *device, int open_flags, blk_t superblock,
  48                             blk_t blocksize, int catastrophic,
  49                             char *data_filename)
  50 {
  51         int     retval;
  52         io_channel data_io = 0;
  53
  54         if (superblock != 0 && blocksize == 0) {
  55                 com_err(device, 0, "if you specify the superblock, you must also specify the block size");
  56                 current_fs = NULL;
  57                 return;
  58         }
  59
  60         if (data_filename) {
  61                 if ((open_flags & EXT2_FLAG_IMAGE_FILE) == 0) {
  62                         com_err(device, 0,
  63                                 "The -d option is only valid when reading an e2image file");
  64                         current_fs = NULL;
  65                         return;
  66                 }
  67                 retval = unix_io_manager->open(data_filename, 0, &data_io);
  68                 if (retval) {
  69                         com_err(data_filename, 0, "while opening data source");
  70                         current_fs = NULL;
  71                         return;
  72                 }
  73         }
  74
  75         if (catastrophic && (open_flags & EXT2_FLAG_RW)) {
  76                 com_err(device, 0,
  77                         "opening read-only because of catastrophic mode");
  78                 open_flags &= ~EXT2_FLAG_RW;
  79         }
  80
  81         retval = ext2fs_open(device, open_flags, superblock, blocksize,
  82                              unix_io_manager, &current_fs);
  83         if (retval) {
  84                 com_err(device, retval, "while opening filesystem");
  85                 current_fs = NULL;
  86                 return;
  87         }
  88
  89         if (catastrophic)
  90                 com_err(device, 0, "catastrophic mode - not reading inode or group bitmaps");
  91         else {
  92                 retval = ext2fs_read_inode_bitmap(current_fs);
  93                 if (retval) {
  94                         com_err(device, retval, "while reading inode bitmap");
  95                         goto errout;
  96                 }
  97                 retval = ext2fs_read_block_bitmap(current_fs);
  98                 if (retval) {
  99                         com_err(device, retval, "while reading block bitmap");
 100                         goto errout;
 101                 }
 102         }
 103
 104         if (data_io) {
 105                 retval = ext2fs_set_data_io(current_fs, data_io);
 106                 if (retval) {
 107                         com_err(device, retval,
 108                                 "while setting data source");
 109                         goto errout;
 110                 }
 111         }
 112
 113         root = cwd = EXT2_ROOT_INO;
 114         return;
 115
 116 errout:
 117         retval = ext2fs_close(current_fs);
 118         if (retval)
 119                 com_err(device, retval, "while trying to close filesystem");
 120         current_fs = NULL;
 121 }
 122
 123 void do_open_filesys(int argc, char **argv)
 124 {
 125         int     c, err;
 126         int     catastrophic = 0;
 127         blk_t   superblock = 0;
 128         blk_t   blocksize = 0;
 129         int     open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
 130         char    *data_filename = 0;
 131
 132         reset_getopt();
 133         while ((c = getopt (argc, argv, "iwfecb:s:d:")) != EOF) {
 134                 switch (c) {
 135                 case 'i':
 136                         open_flags |= EXT2_FLAG_IMAGE_FILE;
 137                         break;
 138                 case 'w':
 139                         open_flags |= EXT2_FLAG_RW;
 140                         break;
 141                 case 'f':
 142                         open_flags |= EXT2_FLAG_FORCE;
 143                         break;
 144                 case 'e':
 145                         open_flags |= EXT2_FLAG_EXCLUSIVE;
 146                         break;
 147                 case 'c':
 148                         catastrophic = 1;
 149                         break;
 150                 case 'd':
 151                         data_filename = optarg;
 152                         break;
 153                 case 'b':
 154                         blocksize = parse_ulong(optarg, argv[0],
 155                                                 "block size", &err);
 156                         if (err)
 157                                 return;
 158                         break;
 159                 case 's':
 160                         superblock = parse_ulong(optarg, argv[0],
 161                                                  "superblock number", &err);
 162                         if (err)
 163                                 return;
 164                         break;
 165                 default:
 166                         goto print_usage;
 167                 }
 168         }
 169         if (optind != argc-1) {
 170                 goto print_usage;
 171         }
 172         if (check_fs_not_open(argv[0]))
 173                 return;
 174         open_filesystem(argv[optind], open_flags,
 175                         superblock, blocksize, catastrophic,
 176                         data_filename);
 177         return;
 178
 179 print_usage:
 180         fprintf(stderr, "%s: Usage: open [-s superblock] [-b blocksize] "
 181                 "[-c] [-w] <device>\n", argv[0]);
 182 }
 183
 184 void do_lcd(int argc, char **argv)
 185 {
 186         if (argc != 2) {
 187                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 188                 return;
 189         }
 190
 191         if (chdir(argv[1]) == -1) {
 192                 com_err(argv[0], errno,
 193                         "while trying to change native directory to %s",
 194                         argv[1]);
 195                 return;
 196         }
 197 }
 198
 199 static void close_filesystem(NOARGS)
 200 {
 201         int     retval;
 202
 203         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 204                 retval = ext2fs_write_inode_bitmap(current_fs);
 205                 if (retval)
 206                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 207         }
 208         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 209                 retval = ext2fs_write_block_bitmap(current_fs);
 210                 if (retval)
 211                         com_err("ext2fs_write_block_bitmap", retval, 0);
 212         }
 213         retval = ext2fs_close(current_fs);
 214         if (retval)
 215                 com_err("ext2fs_close", retval, 0);
 216         current_fs = NULL;
 217         return;
 218 }
 219
 220 void do_close_filesys(int argc, char **argv)
 221 {
 222         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 223                 return;
 224         close_filesystem();
 225 }
 226
 227 void do_init_filesys(int argc, char **argv)
 228 {
 229         struct ext2_super_block param;
 230         errcode_t       retval;
 231         int             err;
 232
 233         if (common_args_process(argc, argv, 3, 3, "initialize",
 234                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 235                 return;
 236
 237         memset(&param, 0, sizeof(struct ext2_super_block));
 238         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 239                                            "blocks count", &err);
 240         if (err)
 241                 return;
 242         retval = ext2fs_initialize(argv[1], 0, &param,
 243                                    unix_io_manager, &current_fs);
 244         if (retval) {
 245                 com_err(argv[1], retval, "while initializing filesystem");
 246                 current_fs = NULL;
 247                 return;
 248         }
 249         root = cwd = EXT2_ROOT_INO;
 250         return;
 251 }
 252
 253 static void print_features(struct ext2_super_block * s, FILE *f)
 254 {
 255         int     i, j, printed=0;
 256         __u32   *mask = &s->s_feature_compat, m;
 257
 258         fputs("Filesystem features:", f);
 259         for (i=0; i <3; i++,mask++) {
 260                 for (j=0,m=1; j < 32; j++, m<<=1) {
 261                         if (*mask & m) {
 262                                 fprintf(f, " %s", e2p_feature2string(i, m));
 263                                 printed++;
 264                         }
 265                 }
 266         }
 267         if (printed == 0)
 268                 fputs("(none)", f);
 269         fputs("\n", f);
 270 }
 271
 272 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
 273                           const char *str, int *first, FILE *f)
 274 {
 275         if (gdp->bg_flags & mask) {
 276                 if (*first) {
 277                         fputs("           [", f);
 278                         *first = 0;
 279                 } else
 280                         fputs(", ", f);
 281                 fputs(str, f);
 282         }
 283 }
 284
 285 void do_show_super_stats(int argc, char *argv[])
 286 {
 287         dgrp_t  i;
 288         FILE    *out;
 289         struct ext2_group_desc *gdp;
 290         int     c, header_only = 0;
 291         int     numdirs = 0, first;
 292
 293         reset_getopt();
 294         while ((c = getopt (argc, argv, "h")) != EOF) {
 295                 switch (c) {
 296                 case 'h':
 297                         header_only++;
 298                         break;
 299                 default:
 300                         goto print_usage;
 301                 }
 302         }
 303         if (optind != argc) {
 304                 goto print_usage;
 305         }
 306         if (check_fs_open(argv[0]))
 307                 return;
 308         out = open_pager();
 309
 310         list_super2(current_fs->super, out);
 311         for (i=0; i < current_fs->group_desc_count; i++)
 312                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 313         fprintf(out, "Directories:              %d\n", numdirs);
 314
 315         if (header_only) {
 316                 close_pager(out);
 317                 return;
 318         }
 319
 320         gdp = &current_fs->group_desc[0];
 321         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 322                 fprintf(out, " Group %2d: block bitmap at %u, "
 323                         "inode bitmap at %u, "
 324                         "inode table at %u\n"
 325                         "           %d free %s, "
 326                         "%d free %s, "
 327                         "%d used %s\n",
 328                         i, gdp->bg_block_bitmap,
 329                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 330                         gdp->bg_free_blocks_count,
 331                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 332                         gdp->bg_free_inodes_count,
 333                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 334                         gdp->bg_used_dirs_count,
 335                         gdp->bg_used_dirs_count != 1 ? "directories"
 336                                 : "directory");
 337                 first = 1;
 338                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
 339                               &first, out);
 340                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
 341                               &first, out);
 342                 if (!first)
 343                         fputs("]\n", out);
 344         }
 345         close_pager(out);
 346         return;
 347 print_usage:
 348         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 349 }
 350
 351 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 352                       char **argv EXT2FS_ATTR((unused)))
 353 {
 354         if (check_fs_open(argv[0]))
 355                 return;
 356         if (check_fs_read_write(argv[0]))
 357                 return;
 358
 359         if (argv[1] && !strcmp(argv[1], "-clean"))
 360                 current_fs->super->s_state |= EXT2_VALID_FS;
 361         else
 362                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 363         ext2fs_mark_super_dirty(current_fs);
 364 }
 365
 366 struct list_blocks_struct {
 367         FILE            *f;
 368         e2_blkcnt_t     total;
 369         blk_t           first_block, last_block;
 370         e2_blkcnt_t     first_bcnt, last_bcnt;
 371         e2_blkcnt_t     first;
 372 };
 373
 374 static void finish_range(struct list_blocks_struct *lb)
 375 {
 376         if (lb->first_block == 0)
 377                 return;
 378         if (lb->first)
 379                 lb->first = 0;
 380         else
 381                 fprintf(lb->f, ", ");
 382         if (lb->first_block == lb->last_block)
 383                 fprintf(lb->f, "(%lld):%u",
 384                         (long long)lb->first_bcnt, lb->first_block);
 385         else
 386                 fprintf(lb->f, "(%lld-%lld):%u-%u",
 387                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 388                         lb->first_block, lb->last_block);
 389         lb->first_block = 0;
 390 }
 391
 392 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 393                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 394                             blk_t ref_block EXT2FS_ATTR((unused)),
 395                             int ref_offset EXT2FS_ATTR((unused)),
 396                             void *private)
 397 {
 398         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 399
 400         lb->total++;
 401         if (blockcnt >= 0) {
 402                 /*
 403                  * See if we can add on to the existing range (if it exists)
 404                  */
 405                 if (lb->first_block &&
 406                     (lb->last_block+1 == *blocknr) &&
 407                     (lb->last_bcnt+1 == blockcnt)) {
 408                         lb->last_block = *blocknr;
 409                         lb->last_bcnt = blockcnt;
 410                         return 0;
 411                 }
 412                 /*
 413                  * Start a new range.
 414                  */
 415                 finish_range(lb);
 416                 lb->first_block = lb->last_block = *blocknr;
 417                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 418                 return 0;
 419         }
 420         /*
 421          * Not a normal block.  Always force a new range.
 422          */
 423         finish_range(lb);
 424         if (lb->first)
 425                 lb->first = 0;
 426         else
 427                 fprintf(lb->f, ", ");
 428         if (blockcnt == -1)
 429                 fprintf(lb->f, "(IND):%u", *blocknr);
 430         else if (blockcnt == -2)
 431                 fprintf(lb->f, "(DIND):%u", *blocknr);
 432         else if (blockcnt == -3)
 433                 fprintf(lb->f, "(TIND):%u", *blocknr);
 434         return 0;
 435 }
 436
 437 static void dump_xattr_string(FILE *out, const char *str, int len)
 438 {
 439         int printable = 1;
 440         int i;
 441
 442         /* check is string printable? */
 443         for (i = 0; i < len; i++)
 444                 if (!isprint(str[i])) {
 445                         printable = 0;
 446                         break;
 447                 }
 448
 449         for (i = 0; i < len; i++)
 450                 if (printable)
 451                         fprintf(out, "%c", (unsigned char)str[i]);
 452                 else
 453                         fprintf(out, "%02x ", (unsigned char)str[i]);
 454 }
 455
 456 static void internal_dump_inode_extra(FILE *out,
 457                                       const char *prefix EXT2FS_ATTR((unused)),
 458                                       ext2_ino_t inode_num EXT2FS_ATTR((unused)),
 459                                       struct ext2_inode_large *inode)
 460 {
 461         struct ext2_ext_attr_entry *entry;
 462         __u32 *magic;
 463         char *start, *end;
 464         unsigned int storage_size;
 465
 466         fprintf(out, "Size of extra inode fields: %u\n", inode->i_extra_isize);
 467         if (inode->i_extra_isize > EXT2_INODE_SIZE(current_fs->super) -
 468                         EXT2_GOOD_OLD_INODE_SIZE) {
 469                 fprintf(stderr, "invalid inode->i_extra_isize (%u)\n",
 470                                 inode->i_extra_isize);
 471                 return;
 472         }
 473         storage_size = EXT2_INODE_SIZE(current_fs->super) -
 474                         EXT2_GOOD_OLD_INODE_SIZE -
 475                         inode->i_extra_isize;
 476         magic = (__u32 *)((char *)inode + EXT2_GOOD_OLD_INODE_SIZE +
 477                         inode->i_extra_isize);
 478         if (*magic == EXT2_EXT_ATTR_MAGIC) {
 479                 fprintf(out, "Extended attributes stored in inode body: \n");
 480                 end = (char *) inode + EXT2_INODE_SIZE(current_fs->super);
 481                 start = (char *) magic + sizeof(__u32);
 482                 entry = (struct ext2_ext_attr_entry *) start;
 483                 while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 484                         struct ext2_ext_attr_entry *next =
 485                                 EXT2_EXT_ATTR_NEXT(entry);
 486                         if (entry->e_value_size > storage_size ||
 487                                         (char *) next >= end) {
 488                                 fprintf(out, "invalid EA entry in inode\n");
 489                                 return;
 490                         }
 491                         fprintf(out, "  ");
 492                         dump_xattr_string(out, EXT2_EXT_ATTR_NAME(entry),
 493                                           entry->e_name_len);
 494                         fprintf(out, " = \"");
 495                         dump_xattr_string(out, start + entry->e_value_offs,
 496                                                 entry->e_value_size);
 497                         fprintf(out, "\" (%u)\n", entry->e_value_size);
 498                         entry = next;
 499                 }
 500         }
 501 }
 502
 503 static void dump_blocks(FILE *f, const char *prefix, ext2_ino_t inode)
 504 {
 505         struct list_blocks_struct lb;
 506
 507         fprintf(f, "%sBLOCKS:\n%s", prefix, prefix);
 508         lb.total = 0;
 509         lb.first_block = 0;
 510         lb.f = f;
 511         lb.first = 1;
 512         ext2fs_block_iterate2(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
 513                              list_blocks_proc, (void *)&lb);
 514         finish_range(&lb);
 515         if (lb.total)
 516                 fprintf(f, "\n%sTOTAL: %lld\n", prefix, (long long)lb.total);
 517         fprintf(f,"\n");
 518 }
 519
 520
 521 void internal_dump_inode(FILE *out, const char *prefix,
 522                          ext2_ino_t inode_num, struct ext2_inode *inode,
 523                          int do_dump_blocks)
 524 {
 525         const char *i_type;
 526         char frag, fsize;
 527         int os = current_fs->super->s_creator_os;
 528
 529         if (LINUX_S_ISDIR(inode->i_mode)) i_type = "directory";
 530         else if (LINUX_S_ISREG(inode->i_mode)) i_type = "regular";
 531         else if (LINUX_S_ISLNK(inode->i_mode)) i_type = "symlink";
 532         else if (LINUX_S_ISBLK(inode->i_mode)) i_type = "block special";
 533         else if (LINUX_S_ISCHR(inode->i_mode)) i_type = "character special";
 534         else if (LINUX_S_ISFIFO(inode->i_mode)) i_type = "FIFO";
 535         else if (LINUX_S_ISSOCK(inode->i_mode)) i_type = "socket";
 536         else i_type = "bad type";
 537         fprintf(out, "%sInode: %u   Type: %s    ", prefix, inode_num, i_type);
 538         fprintf(out, "%sMode:  %04o   Flags: 0x%x   Generation: %u\n",
 539                 prefix,
 540                 inode->i_mode & 0777, inode->i_flags, inode->i_generation);
 541         fprintf(out, "%sUser: %5d   Group: %5d   Size: ",
 542                 prefix, inode_uid(*inode), inode_gid(*inode));
 543         if (LINUX_S_ISREG(inode->i_mode)) {
 544                 unsigned long long i_size = (inode->i_size |
 545                                     ((unsigned long long)inode->i_size_high << 32));
 546
 547                 fprintf(out, "%llu\n", i_size);
 548         } else
 549                 fprintf(out, "%d\n", inode->i_size);
 550         if (os == EXT2_OS_HURD)
 551                 fprintf(out,
 552                         "%sFile ACL: %d    Directory ACL: %d Translator: %d\n",
 553                         prefix,
 554                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0,
 555                         inode->osd1.hurd1.h_i_translator);
 556         else
 557                 fprintf(out, "%sFile ACL: %d    Directory ACL: %d\n",
 558                         prefix,
 559                         inode->i_file_acl, LINUX_S_ISDIR(inode->i_mode) ? inode->i_dir_acl : 0);
 560         if (os == EXT2_OS_LINUX)
 561                 fprintf(out, "%sLinks: %d   Blockcount: %llu\n",
 562                         prefix, inode->i_links_count,
 563                         (((unsigned long long)
 564                           inode->osd2.linux2.l_i_blocks_hi << 32)) +
 565                         inode->i_blocks);
 566         else
 567                 fprintf(out, "%sLinks: %d   Blockcount: %u\n",
 568                         prefix, inode->i_links_count, inode->i_blocks);
 569         switch (os) {
 570             case EXT2_OS_HURD:
 571                 frag = inode->osd2.hurd2.h_i_frag;
 572                 fsize = inode->osd2.hurd2.h_i_fsize;
 573                 break;
 574             default:
 575                 frag = fsize = 0;
 576         }
 577         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 578                 prefix, inode->i_faddr, frag, fsize);
 579         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 580                 time_to_string(inode->i_ctime));
 581         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 582                 time_to_string(inode->i_atime));
 583         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 584                 time_to_string(inode->i_mtime));
 585         if (inode->i_dtime)
 586           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 587                   time_to_string(inode->i_dtime));
 588         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 589                 internal_dump_inode_extra(out, prefix, inode_num,
 590                                           (struct ext2_inode_large *) inode);
 591         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 592                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 593                         (int) inode->i_size, (char *)inode->i_block);
 594         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 595                 int major, minor;
 596                 const char *devnote;
 597
 598                 if (inode->i_block[0]) {
 599                         major = (inode->i_block[0] >> 8) & 255;
 600                         minor = inode->i_block[0] & 255;
 601                         devnote = "";
 602                 } else {
 603                         major = (inode->i_block[1] & 0xfff00) >> 8;
 604                         minor = ((inode->i_block[1] & 0xff) |
 605                                  ((inode->i_block[1] >> 12) & 0xfff00));
 606                         devnote = "(New-style) ";
 607                 }
 608                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 609                         devnote, major, minor, major, minor);
 610         }
 611         else if (do_dump_blocks)
 612                 dump_blocks(out, prefix, inode_num);
 613 }
 614
 615 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 616 {
 617         FILE    *out;
 618
 619         out = open_pager();
 620         internal_dump_inode(out, "", inode_num, inode, 1);
 621         close_pager(out);
 622 }
 623
 624 void do_stat(int argc, char *argv[])
 625 {
 626         ext2_ino_t      inode;
 627         struct ext2_inode * inode_buf;
 628
 629         if (check_fs_open(argv[0]))
 630                 return;
 631
 632         inode_buf = (struct ext2_inode *)
 633                         malloc(EXT2_INODE_SIZE(current_fs->super));
 634         if (!inode_buf) {
 635                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 636                 return;
 637         }
 638
 639         if (common_inode_args_process(argc, argv, &inode, 0)) {
 640                 free(inode_buf);
 641                 return;
 642         }
 643
 644         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 645                                         EXT2_INODE_SIZE(current_fs->super))) {
 646                 free(inode_buf);
 647                 return;
 648         }
 649
 650         dump_inode(inode, inode_buf);
 651         free(inode_buf);
 652         return;
 653 }
 654
 655 void do_chroot(int argc, char *argv[])
 656 {
 657         ext2_ino_t inode;
 658         int retval;
 659
 660         if (common_inode_args_process(argc, argv, &inode, 0))
 661                 return;
 662
 663         retval = ext2fs_check_directory(current_fs, inode);
 664         if (retval)  {
 665                 com_err(argv[1], retval, 0);
 666                 return;
 667         }
 668         root = inode;
 669 }
 670
 671 void do_clri(int argc, char *argv[])
 672 {
 673         ext2_ino_t inode;
 674         struct ext2_inode inode_buf;
 675
 676         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 677                 return;
 678
 679         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 680                 return;
 681         memset(&inode_buf, 0, sizeof(inode_buf));
 682         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 683                 return;
 684 }
 685
 686 void do_freei(int argc, char *argv[])
 687 {
 688         ext2_ino_t inode;
 689
 690         if (common_inode_args_process(argc, argv, &inode,
 691                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 692                 return;
 693
 694         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 695                 com_err(argv[0], 0, "Warning: inode already clear");
 696         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 697         ext2fs_mark_ib_dirty(current_fs);
 698 }
 699
 700 void do_seti(int argc, char *argv[])
 701 {
 702         ext2_ino_t inode;
 703
 704         if (common_inode_args_process(argc, argv, &inode,
 705                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 706                 return;
 707
 708         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 709                 com_err(argv[0], 0, "Warning: inode already set");
 710         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 711         ext2fs_mark_ib_dirty(current_fs);
 712 }
 713
 714 void do_testi(int argc, char *argv[])
 715 {
 716         ext2_ino_t inode;
 717
 718         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 719                 return;
 720
 721         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 722                 printf("Inode %u is marked in use\n", inode);
 723         else
 724                 printf("Inode %u is not in use\n", inode);
 725 }
 726
 727 void do_freeb(int argc, char *argv[])
 728 {
 729         blk_t block;
 730         blk_t count = 1;
 731
 732         if (common_block_args_process(argc, argv, &block, &count))
 733                 return;
 734         if (check_fs_read_write(argv[0]))
 735                 return;
 736         while (count-- > 0) {
 737                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 738                         com_err(argv[0], 0, "Warning: block %u already clear",
 739                                 block);
 740                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 741                 block++;
 742         }
 743         ext2fs_mark_bb_dirty(current_fs);
 744 }
 745
 746 void do_setb(int argc, char *argv[])
 747 {
 748         blk_t block;
 749         blk_t count = 1;
 750
 751         if (common_block_args_process(argc, argv, &block, &count))
 752                 return;
 753         if (check_fs_read_write(argv[0]))
 754                 return;
 755         while (count-- > 0) {
 756                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 757                         com_err(argv[0], 0, "Warning: block %u already set",
 758                                 block);
 759                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 760                 block++;
 761         }
 762         ext2fs_mark_bb_dirty(current_fs);
 763 }
 764
 765 void do_testb(int argc, char *argv[])
 766 {
 767         blk_t block;
 768         blk_t count = 1;
 769
 770         if (common_block_args_process(argc, argv, &block, &count))
 771                 return;
 772         while (count-- > 0) {
 773                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 774                         printf("Block %u marked in use\n", block);
 775                 else
 776                         printf("Block %u not in use\n", block);
 777                 block++;
 778         }
 779 }
 780
 781 static void modify_u8(char *com, const char *prompt,
 782                       const char *format, __u8 *val)
 783 {
 784         char buf[200];
 785         unsigned long v;
 786         char *tmp;
 787
 788         sprintf(buf, format, *val);
 789         printf("%30s    [%s] ", prompt, buf);
 790         if (!fgets(buf, sizeof(buf), stdin))
 791                 return;
 792         if (buf[strlen (buf) - 1] == '\n')
 793                 buf[strlen (buf) - 1] = '\0';
 794         if (!buf[0])
 795                 return;
 796         v = strtoul(buf, &tmp, 0);
 797         if (*tmp)
 798                 com_err(com, 0, "Bad value - %s", buf);
 799         else
 800                 *val = v;
 801 }
 802
 803 static void modify_u16(char *com, const char *prompt,
 804                        const char *format, __u16 *val)
 805 {
 806         char buf[200];
 807         unsigned long v;
 808         char *tmp;
 809
 810         sprintf(buf, format, *val);
 811         printf("%30s    [%s] ", prompt, buf);
 812         if (!fgets(buf, sizeof(buf), stdin))
 813                 return;
 814         if (buf[strlen (buf) - 1] == '\n')
 815                 buf[strlen (buf) - 1] = '\0';
 816         if (!buf[0])
 817                 return;
 818         v = strtoul(buf, &tmp, 0);
 819         if (*tmp)
 820                 com_err(com, 0, "Bad value - %s", buf);
 821         else
 822                 *val = v;
 823 }
 824
 825 static void modify_u32(char *com, const char *prompt,
 826                        const char *format, __u32 *val)
 827 {
 828         char buf[200];
 829         unsigned long v;
 830         char *tmp;
 831
 832         sprintf(buf, format, *val);
 833         printf("%30s    [%s] ", prompt, buf);
 834         if (!fgets(buf, sizeof(buf), stdin))
 835                 return;
 836         if (buf[strlen (buf) - 1] == '\n')
 837                 buf[strlen (buf) - 1] = '\0';
 838         if (!buf[0])
 839                 return;
 840         v = strtoul(buf, &tmp, 0);
 841         if (*tmp)
 842                 com_err(com, 0, "Bad value - %s", buf);
 843         else
 844                 *val = v;
 845 }
 846
 847
 848 void do_modify_inode(int argc, char *argv[])
 849 {
 850         struct ext2_inode inode;
 851         ext2_ino_t      inode_num;
 852         int             i;
 853         unsigned char   *frag, *fsize;
 854         char            buf[80];
 855         int             os;
 856         const char      *hex_format = "0x%x";
 857         const char      *octal_format = "0%o";
 858         const char      *decimal_format = "%d";
 859         const char      *unsignedlong_format = "%lu";
 860
 861         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 862                 return;
 863
 864         os = current_fs->super->s_creator_os;
 865
 866         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 867                 return;
 868
 869         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 870         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 871         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 872         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 873         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 874         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 875         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 876         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 877         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 878         if (os == EXT2_OS_LINUX)
 879                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 880                            &inode.osd2.linux2.l_i_blocks_hi);
 881         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 882         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 883         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 884 #if 0
 885         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 886 #endif
 887         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 888         if (LINUX_S_ISDIR(inode.i_mode))
 889                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 890         else
 891                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 892
 893         if (os == EXT2_OS_HURD)
 894                 modify_u32(argv[0], "Translator Block",
 895                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 896
 897         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 898         switch (os) {
 899             case EXT2_OS_HURD:
 900                 frag = &inode.osd2.hurd2.h_i_frag;
 901                 fsize = &inode.osd2.hurd2.h_i_fsize;
 902                 break;
 903             default:
 904                 frag = fsize = 0;
 905         }
 906         if (frag)
 907                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 908         if (fsize)
 909                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 910
 911         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 912                 sprintf(buf, "Direct Block #%d", i);
 913                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 914         }
 915         modify_u32(argv[0], "Indirect Block", decimal_format,
 916                     &inode.i_block[EXT2_IND_BLOCK]);
 917         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 918                     &inode.i_block[EXT2_DIND_BLOCK]);
 919         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 920                     &inode.i_block[EXT2_TIND_BLOCK]);
 921         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 922                 return;
 923 }
 924
 925 void do_change_working_dir(int argc, char *argv[])
 926 {
 927         ext2_ino_t      inode;
 928         int             retval;
 929
 930         if (common_inode_args_process(argc, argv, &inode, 0))
 931                 return;
 932
 933         retval = ext2fs_check_directory(current_fs, inode);
 934         if (retval) {
 935                 com_err(argv[1], retval, 0);
 936                 return;
 937         }
 938         cwd = inode;
 939         return;
 940 }
 941
 942 void do_print_working_directory(int argc, char *argv[])
 943 {
 944         int     retval;
 945         char    *pathname = NULL;
 946
 947         if (common_args_process(argc, argv, 1, 1,
 948                                 "print_working_directory", "", 0))
 949                 return;
 950
 951         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 952         if (retval) {
 953                 com_err(argv[0], retval,
 954                         "while trying to get pathname of cwd");
 955         }
 956         printf("[pwd]   INODE: %6u  PATH: %s\n",
 957                cwd, pathname ? pathname : "NULL");
 958         if (pathname) {
 959                 free(pathname);
 960                 pathname = NULL;
 961         }
 962         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 963         if (retval) {
 964                 com_err(argv[0], retval,
 965                         "while trying to get pathname of root");
 966         }
 967         printf("[root]  INODE: %6u  PATH: %s\n",
 968                root, pathname ? pathname : "NULL");
 969         if (pathname) {
 970                 free(pathname);
 971                 pathname = NULL;
 972         }
 973         return;
 974 }
 975
 976 /*
 977  * Given a mode, return the ext2 file type
 978  */
 979 static int ext2_file_type(unsigned int mode)
 980 {
 981         if (LINUX_S_ISREG(mode))
 982                 return EXT2_FT_REG_FILE;
 983
 984         if (LINUX_S_ISDIR(mode))
 985                 return EXT2_FT_DIR;
 986
 987         if (LINUX_S_ISCHR(mode))
 988                 return EXT2_FT_CHRDEV;
 989
 990         if (LINUX_S_ISBLK(mode))
 991                 return EXT2_FT_BLKDEV;
 992
 993         if (LINUX_S_ISLNK(mode))
 994                 return EXT2_FT_SYMLINK;
 995
 996         if (LINUX_S_ISFIFO(mode))
 997                 return EXT2_FT_FIFO;
 998
 999         if (LINUX_S_ISSOCK(mode))
1000                 return EXT2_FT_SOCK;
1001
1002         return 0;
1003 }
1004
1005 static void make_link(char *sourcename, char *destname)
1006 {
1007         ext2_ino_t      ino;
1008         struct ext2_inode inode;
1009         int             retval;
1010         ext2_ino_t      dir;
1011         char            *dest, *cp, *base_name;
1012
1013         /*
1014          * Get the source inode
1015          */
1016         ino = string_to_inode(sourcename);
1017         if (!ino)
1018                 return;
1019         base_name = strrchr(sourcename, '/');
1020         if (base_name)
1021                 base_name++;
1022         else
1023                 base_name = sourcename;
1024         /*
1025          * Figure out the destination.  First see if it exists and is
1026          * a directory.
1027          */
1028         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1029                 dest = base_name;
1030         else {
1031                 /*
1032                  * OK, it doesn't exist.  See if it is
1033                  * '<dir>/basename' or 'basename'
1034                  */
1035                 cp = strrchr(destname, '/');
1036                 if (cp) {
1037                         *cp = 0;
1038                         dir = string_to_inode(destname);
1039                         if (!dir)
1040                                 return;
1041                         dest = cp+1;
1042                 } else {
1043                         dir = cwd;
1044                         dest = destname;
1045                 }
1046         }
1047
1048         if (debugfs_read_inode(ino, &inode, sourcename))
1049                 return;
1050
1051         retval = ext2fs_link(current_fs, dir, dest, ino,
1052                              ext2_file_type(inode.i_mode));
1053         if (retval)
1054                 com_err("make_link", retval, 0);
1055         return;
1056 }
1057
1058
1059 void do_link(int argc, char *argv[])
1060 {
1061         if (common_args_process(argc, argv, 3, 3, "link",
1062                                 "<source file> <dest_name>", CHECK_FS_RW))
1063                 return;
1064
1065         make_link(argv[1], argv[2]);
1066 }
1067
1068 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1069                             int blockcnt EXT2FS_ATTR((unused)),
1070                             void *private EXT2FS_ATTR((unused)))
1071 {
1072         blk_t   block;
1073
1074         block = *blocknr;
1075         ext2fs_block_alloc_stats(fs, block, +1);
1076         return 0;
1077 }
1078
1079 void do_undel(int argc, char *argv[])
1080 {
1081         ext2_ino_t      ino;
1082         struct ext2_inode inode;
1083
1084         if (common_args_process(argc, argv, 2, 3, "undelete",
1085                                 "<inode_num> [dest_name]",
1086                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1087                 return;
1088
1089         ino = string_to_inode(argv[1]);
1090         if (!ino)
1091                 return;
1092
1093         if (debugfs_read_inode(ino, &inode, argv[1]))
1094                 return;
1095
1096         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1097                 com_err(argv[1], 0, "Inode is not marked as deleted");
1098                 return;
1099         }
1100
1101         /*
1102          * XXX this function doesn't handle changing the links count on the
1103          * parent directory when undeleting a directory.
1104          */
1105         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1106         inode.i_dtime = 0;
1107
1108         if (debugfs_write_inode(ino, &inode, argv[0]))
1109                 return;
1110
1111         ext2fs_block_iterate(current_fs, ino, BLOCK_FLAG_READ_ONLY, NULL,
1112                              mark_blocks_proc, NULL);
1113
1114         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1115
1116         if (argc > 2)
1117                 make_link(argv[1], argv[2]);
1118 }
1119
1120 static void unlink_file_by_name(char *filename)
1121 {
1122         int             retval;
1123         ext2_ino_t      dir;
1124         char            *base_name;
1125
1126         base_name = strrchr(filename, '/');
1127         if (base_name) {
1128                 *base_name++ = '\0';
1129                 dir = string_to_inode(filename);
1130                 if (!dir)
1131                         return;
1132         } else {
1133                 dir = cwd;
1134                 base_name = filename;
1135         }
1136         retval = ext2fs_unlink(current_fs, dir, base_name, 0, 0);
1137         if (retval)
1138                 com_err("unlink_file_by_name", retval, 0);
1139         return;
1140 }
1141
1142 void do_unlink(int argc, char *argv[])
1143 {
1144         if (common_args_process(argc, argv, 2, 2, "link",
1145                                 "<pathname>", CHECK_FS_RW))
1146                 return;
1147
1148         unlink_file_by_name(argv[1]);
1149 }
1150
1151 void do_find_free_block(int argc, char *argv[])
1152 {
1153         blk_t   free_blk, goal;
1154         int             count;
1155         errcode_t       retval;
1156         char            *tmp;
1157
1158         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1159                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1160                 return;
1161         }
1162         if (check_fs_open(argv[0]))
1163                 return;
1164
1165         if (argc > 1) {
1166                 count = strtol(argv[1],&tmp,0);
1167                 if (*tmp) {
1168                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1169                         return;
1170                 }
1171         } else
1172                 count = 1;
1173
1174         if (argc > 2) {
1175                 goal = strtol(argv[2], &tmp, 0);
1176                 if (*tmp) {
1177                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1178                         return;
1179                 }
1180         }
1181         else
1182                 goal = current_fs->super->s_first_data_block;
1183
1184         printf("Free blocks found: ");
1185         free_blk = goal - 1;
1186         while (count-- > 0) {
1187                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1188                                           &free_blk);
1189                 if (retval) {
1190                         com_err("ext2fs_new_block", retval, 0);
1191                         return;
1192                 } else
1193                         printf("%u ", free_blk);
1194         }
1195         printf("\n");
1196 }
1197
1198 void do_find_free_inode(int argc, char *argv[])
1199 {
1200         ext2_ino_t      free_inode, dir;
1201         int             mode;
1202         int             retval;
1203         char            *tmp;
1204
1205         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1206                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1207                 return;
1208         }
1209         if (check_fs_open(argv[0]))
1210                 return;
1211
1212         if (argc > 1) {
1213                 dir = strtol(argv[1], &tmp, 0);
1214                 if (*tmp) {
1215                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1216                         return;
1217                 }
1218         }
1219         else
1220                 dir = root;
1221         if (argc > 2) {
1222                 mode = strtol(argv[2], &tmp, 0);
1223                 if (*tmp) {
1224                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1225                         return;
1226                 }
1227         } else
1228                 mode = 010755;
1229
1230         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1231         if (retval)
1232                 com_err("ext2fs_new_inode", retval, 0);
1233         else
1234                 printf("Free inode found: %u\n", free_inode);
1235 }
1236
1237 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1238 {
1239         ext2_file_t     e2_file;
1240         errcode_t       retval;
1241         int             got;
1242         unsigned int    written;
1243         char            buf[8192];
1244         char            *ptr;
1245
1246         retval = ext2fs_file_open(current_fs, newfile,
1247                                   EXT2_FILE_WRITE, &e2_file);
1248         if (retval)
1249                 return retval;
1250
1251         while (1) {
1252                 got = read(fd, buf, sizeof(buf));
1253                 if (got == 0)
1254                         break;
1255                 if (got < 0) {
1256                         retval = errno;
1257                         goto fail;
1258                 }
1259                 ptr = buf;
1260                 while (got > 0) {
1261                         retval = ext2fs_file_write(e2_file, ptr,
1262                                                    got, &written);
1263                         if (retval)
1264                                 goto fail;
1265
1266                         got -= written;
1267                         ptr += written;
1268                 }
1269         }
1270         retval = ext2fs_file_close(e2_file);
1271         return retval;
1272
1273 fail:
1274         (void) ext2fs_file_close(e2_file);
1275         return retval;
1276 }
1277
1278
1279 void do_write(int argc, char *argv[])
1280 {
1281         int             fd;
1282         struct stat     statbuf;
1283         ext2_ino_t      newfile;
1284         errcode_t       retval;
1285         struct ext2_inode inode;
1286
1287         if (common_args_process(argc, argv, 3, 3, "write",
1288                                 "<native file> <new file>", CHECK_FS_RW))
1289                 return;
1290
1291         fd = open(argv[1], O_RDONLY);
1292         if (fd < 0) {
1293                 com_err(argv[1], errno, 0);
1294                 return;
1295         }
1296         if (fstat(fd, &statbuf) < 0) {
1297                 com_err(argv[1], errno, 0);
1298                 close(fd);
1299                 return;
1300         }
1301
1302         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1303         if (retval == 0) {
1304                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1305                 close(fd);
1306                 return;
1307         }
1308
1309         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1310         if (retval) {
1311                 com_err(argv[0], retval, 0);
1312                 close(fd);
1313                 return;
1314         }
1315         printf("Allocated inode: %u\n", newfile);
1316         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1317                              EXT2_FT_REG_FILE);
1318         if (retval == EXT2_ET_DIR_NO_SPACE) {
1319                 retval = ext2fs_expand_dir(current_fs, cwd);
1320                 if (retval) {
1321                         com_err(argv[0], retval, "while expanding directory");
1322                         return;
1323                 }
1324                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1325                                      EXT2_FT_REG_FILE);
1326         }
1327         if (retval) {
1328                 com_err(argv[2], retval, 0);
1329                 close(fd);
1330                 return;
1331         }
1332         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1333                 com_err(argv[0], 0, "Warning: inode already set");
1334         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1335         memset(&inode, 0, sizeof(inode));
1336         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1337         inode.i_atime = inode.i_ctime = inode.i_mtime =
1338                 current_fs->now ? current_fs->now : time(0);
1339         inode.i_links_count = 1;
1340         inode.i_size = statbuf.st_size;
1341         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1342                 close(fd);
1343                 return;
1344         }
1345         if (LINUX_S_ISREG(inode.i_mode)) {
1346                 retval = copy_file(fd, newfile);
1347                 if (retval)
1348                         com_err("copy_file", retval, 0);
1349         }
1350         close(fd);
1351 }
1352
1353 void do_mknod(int argc, char *argv[])
1354 {
1355         unsigned long   mode, major, minor;
1356         ext2_ino_t      newfile;
1357         errcode_t       retval;
1358         struct ext2_inode inode;
1359         int             filetype, nr;
1360
1361         if (check_fs_open(argv[0]))
1362                 return;
1363         if (argc < 3 || argv[2][1]) {
1364         usage:
1365                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1366                 return;
1367         }
1368         mode = minor = major = 0;
1369         switch (argv[2][0]) {
1370                 case 'p':
1371                         mode = LINUX_S_IFIFO;
1372                         filetype = EXT2_FT_FIFO;
1373                         nr = 3;
1374                         break;
1375                 case 'c':
1376                         mode = LINUX_S_IFCHR;
1377                         filetype = EXT2_FT_CHRDEV;
1378                         nr = 5;
1379                         break;
1380                 case 'b':
1381                         mode = LINUX_S_IFBLK;
1382                         filetype = EXT2_FT_BLKDEV;
1383                         nr = 5;
1384                         break;
1385                 default:
1386                         filetype = 0;
1387                         nr = 0;
1388         }
1389         if (nr == 5) {
1390                 major = strtoul(argv[3], argv+3, 0);
1391                 minor = strtoul(argv[4], argv+4, 0);
1392                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1393                         nr = 0;
1394         }
1395         if (argc != nr)
1396                 goto usage;
1397         if (check_fs_read_write(argv[0]))
1398                 return;
1399         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1400         if (retval) {
1401                 com_err(argv[0], retval, 0);
1402                 return;
1403         }
1404         printf("Allocated inode: %u\n", newfile);
1405         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1406         if (retval == EXT2_ET_DIR_NO_SPACE) {
1407                 retval = ext2fs_expand_dir(current_fs, cwd);
1408                 if (retval) {
1409                         com_err(argv[0], retval, "while expanding directory");
1410                         return;
1411                 }
1412                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1413                                      filetype);
1414         }
1415         if (retval) {
1416                 com_err(argv[1], retval, 0);
1417                 return;
1418         }
1419         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1420                 com_err(argv[0], 0, "Warning: inode already set");
1421         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1422         ext2fs_mark_ib_dirty(current_fs);
1423         memset(&inode, 0, sizeof(inode));
1424         inode.i_mode = mode;
1425         inode.i_atime = inode.i_ctime = inode.i_mtime =
1426                 current_fs->now ? current_fs->now : time(0);
1427         if ((major < 256) && (minor < 256)) {
1428                 inode.i_block[0] = major*256+minor;
1429                 inode.i_block[1] = 0;
1430         } else {
1431                 inode.i_block[0] = 0;
1432                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1433         }
1434         inode.i_links_count = 1;
1435         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1436                 return;
1437 }
1438
1439 void do_mkdir(int argc, char *argv[])
1440 {
1441         char    *cp;
1442         ext2_ino_t      parent;
1443         char    *name;
1444         errcode_t retval;
1445
1446         if (common_args_process(argc, argv, 2, 2, "mkdir",
1447                                 "<filename>", CHECK_FS_RW))
1448                 return;
1449
1450         cp = strrchr(argv[1], '/');
1451         if (cp) {
1452                 *cp = 0;
1453                 parent = string_to_inode(argv[1]);
1454                 if (!parent) {
1455                         com_err(argv[1], ENOENT, 0);
1456                         return;
1457                 }
1458                 name = cp+1;
1459         } else {
1460                 parent = cwd;
1461                 name = argv[1];
1462         }
1463
1464 try_again:
1465         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1466         if (retval == EXT2_ET_DIR_NO_SPACE) {
1467                 retval = ext2fs_expand_dir(current_fs, parent);
1468                 if (retval) {
1469                         com_err("argv[0]", retval, "while expanding directory");
1470                         return;
1471                 }
1472                 goto try_again;
1473         }
1474         if (retval) {
1475                 com_err("ext2fs_mkdir", retval, 0);
1476                 return;
1477         }
1478
1479 }
1480
1481 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1482                                int blockcnt EXT2FS_ATTR((unused)),
1483                                void *private EXT2FS_ATTR((unused)))
1484 {
1485         blk_t   block;
1486
1487         block = *blocknr;
1488         ext2fs_block_alloc_stats(fs, block, -1);
1489         return 0;
1490 }
1491
1492 static void kill_file_by_inode(ext2_ino_t inode)
1493 {
1494         struct ext2_inode inode_buf;
1495
1496         if (debugfs_read_inode(inode, &inode_buf, 0))
1497                 return;
1498         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1499         if (debugfs_write_inode(inode, &inode_buf, 0))
1500                 return;
1501         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1502                 return;
1503
1504         ext2fs_block_iterate(current_fs, inode, BLOCK_FLAG_READ_ONLY, NULL,
1505                              release_blocks_proc, NULL);
1506         printf("\n");
1507         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1508                                   LINUX_S_ISDIR(inode_buf.i_mode));
1509 }
1510
1511
1512 void do_kill_file(int argc, char *argv[])
1513 {
1514         ext2_ino_t inode_num;
1515
1516         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1517                 return;
1518
1519         kill_file_by_inode(inode_num);
1520 }
1521
1522 void do_rm(int argc, char *argv[])
1523 {
1524         int retval;
1525         ext2_ino_t inode_num;
1526         struct ext2_inode inode;
1527
1528         if (common_args_process(argc, argv, 2, 2, "rm",
1529                                 "<filename>", CHECK_FS_RW))
1530                 return;
1531
1532         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1533         if (retval) {
1534                 com_err(argv[0], retval, "while trying to resolve filename");
1535                 return;
1536         }
1537
1538         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1539                 return;
1540
1541         if (LINUX_S_ISDIR(inode.i_mode)) {
1542                 com_err(argv[0], 0, "file is a directory");
1543                 return;
1544         }
1545
1546         --inode.i_links_count;
1547         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1548                 return;
1549
1550         unlink_file_by_name(argv[1]);
1551         if (inode.i_links_count == 0)
1552                 kill_file_by_inode(inode_num);
1553 }
1554
1555 struct rd_struct {
1556         ext2_ino_t      parent;
1557         int             empty;
1558 };
1559
1560 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1561                       int       entry EXT2FS_ATTR((unused)),
1562                       struct ext2_dir_entry *dirent,
1563                       int       offset EXT2FS_ATTR((unused)),
1564                       int       blocksize EXT2FS_ATTR((unused)),
1565                       char      *buf EXT2FS_ATTR((unused)),
1566                       void      *private)
1567 {
1568         struct rd_struct *rds = (struct rd_struct *) private;
1569
1570         if (dirent->inode == 0)
1571                 return 0;
1572         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1573                 return 0;
1574         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1575             (dirent->name[1] == '.')) {
1576                 rds->parent = dirent->inode;
1577                 return 0;
1578         }
1579         rds->empty = 0;
1580         return 0;
1581 }
1582
1583 void do_rmdir(int argc, char *argv[])
1584 {
1585         int retval;
1586         ext2_ino_t inode_num;
1587         struct ext2_inode inode;
1588         struct rd_struct rds;
1589
1590         if (common_args_process(argc, argv, 2, 2, "rmdir",
1591                                 "<filename>", CHECK_FS_RW))
1592                 return;
1593
1594         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1595         if (retval) {
1596                 com_err(argv[0], retval, "while trying to resolve filename");
1597                 return;
1598         }
1599
1600         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1601                 return;
1602
1603         if (!LINUX_S_ISDIR(inode.i_mode)) {
1604                 com_err(argv[0], 0, "file is not a directory");
1605                 return;
1606         }
1607
1608         rds.parent = 0;
1609         rds.empty = 1;
1610
1611         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1612                                     0, rmdir_proc, &rds);
1613         if (retval) {
1614                 com_err(argv[0], retval, "while iterating over directory");
1615                 return;
1616         }
1617         if (rds.empty == 0) {
1618                 com_err(argv[0], 0, "directory not empty");
1619                 return;
1620         }
1621
1622         inode.i_links_count = 0;
1623         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1624                 return;
1625
1626         unlink_file_by_name(argv[1]);
1627         kill_file_by_inode(inode_num);
1628
1629         if (rds.parent) {
1630                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1631                         return;
1632                 if (inode.i_links_count > 1)
1633                         inode.i_links_count--;
1634                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1635                         return;
1636         }
1637 }
1638
1639 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1640                             char *argv[] EXT2FS_ATTR((unused)))
1641 {
1642         FILE *out = stdout;
1643
1644         if (current_fs)
1645                 fprintf(out, "Open mode: read-%s\n",
1646                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1647         fprintf(out, "Filesystem in use: %s\n",
1648                 current_fs ? current_fs->device_name : "--none--");
1649 }
1650
1651 void do_expand_dir(int argc, char *argv[])
1652 {
1653         ext2_ino_t inode;
1654         int retval;
1655
1656         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1657                 return;
1658
1659         retval = ext2fs_expand_dir(current_fs, inode);
1660         if (retval)
1661                 com_err("ext2fs_expand_dir", retval, 0);
1662         return;
1663 }
1664
1665 void do_features(int argc, char *argv[])
1666 {
1667         int     i;
1668
1669         if (check_fs_open(argv[0]))
1670                 return;
1671
1672         if ((argc != 1) && check_fs_read_write(argv[0]))
1673                 return;
1674         for (i=1; i < argc; i++) {
1675                 if (e2p_edit_feature(argv[i],
1676                                      &current_fs->super->s_feature_compat, 0))
1677                         com_err(argv[0], 0, "Unknown feature: %s\n",
1678                                 argv[i]);
1679                 else
1680                         ext2fs_mark_super_dirty(current_fs);
1681         }
1682         print_features(current_fs->super, stdout);
1683 }
1684
1685 void do_bmap(int argc, char *argv[])
1686 {
1687         ext2_ino_t      ino;
1688         blk_t           blk, pblk;
1689         int             err;
1690         errcode_t       errcode;
1691
1692         if (common_args_process(argc, argv, 3, 3, argv[0],
1693                                 "<file> logical_blk", 0))
1694                 return;
1695
1696         ino = string_to_inode(argv[1]);
1697         if (!ino)
1698                 return;
1699         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1700
1701         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1702         if (errcode) {
1703                 com_err("argv[0]", errcode,
1704                         "while mapping logical block %u\n", blk);
1705                 return;
1706         }
1707         printf("%u\n", pblk);
1708 }
1709
1710 void do_imap(int argc, char *argv[])
1711 {
1712         ext2_ino_t      ino;
1713         unsigned long   group, block, block_nr, offset;
1714
1715         if (common_args_process(argc, argv, 2, 2, argv[0],
1716                                 "<file>", 0))
1717                 return;
1718         ino = string_to_inode(argv[1]);
1719         if (!ino)
1720                 return;
1721
1722         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1723         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1724                 EXT2_INODE_SIZE(current_fs->super);
1725         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1726         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1727                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1728                         group);
1729                 return;
1730         }
1731         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1732                 block;
1733         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1734
1735         printf("Inode %d is part of block group %lu\n"
1736                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1737                block_nr, offset);
1738
1739 }
1740
1741 void do_set_current_time(int argc, char *argv[])
1742 {
1743         time_t now;
1744
1745         if (common_args_process(argc, argv, 2, 2, argv[0],
1746                                 "<time>", 0))
1747                 return;
1748
1749         now = string_to_time(argv[1]);
1750         if (now == ((time_t) -1)) {
1751                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1752                         argv[1]);
1753                 return;
1754
1755         } else {
1756                 printf("Setting current time to %s\n", time_to_string(now));
1757                 current_fs->now = now;
1758         }
1759 }
1760
1761 static int source_file(const char *cmd_file, int sci_idx)
1762 {
1763         FILE            *f;
1764         char            buf[256];
1765         char            *cp;
1766         int             exit_status = 0;
1767         int             retval;
1768
1769         if (strcmp(cmd_file, "-") == 0)
1770                 f = stdin;
1771         else {
1772                 f = fopen(cmd_file, "r");
1773                 if (!f) {
1774                         perror(cmd_file);
1775                         exit(1);
1776                 }
1777         }
1778         setbuf(stdout, NULL);
1779         setbuf(stderr, NULL);
1780         while (!feof(f)) {
1781                 if (fgets(buf, sizeof(buf), f) == NULL)
1782                         break;
1783                 cp = strchr(buf, '\n');
1784                 if (cp)
1785                         *cp = 0;
1786                 cp = strchr(buf, '\r');
1787                 if (cp)
1788                         *cp = 0;
1789                 printf("debugfs: %s\n", buf);
1790                 retval = ss_execute_line(sci_idx, buf);
1791                 if (retval) {
1792                         ss_perror(sci_idx, retval, buf);
1793                         exit_status++;
1794                 }
1795         }
1796         return exit_status;
1797 }
1798
1799 int main(int argc, char **argv)
1800 {
1801         int             retval;
1802         int             sci_idx;
1803         const char      *usage = "Usage: %s [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1804         int             c;
1805         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1806         char            *request = 0;
1807         int             exit_status = 0;
1808         char            *cmd_file = 0;
1809         blk_t           superblock = 0;
1810         blk_t           blocksize = 0;
1811         int             catastrophic = 0;
1812         char            *data_filename = 0;
1813
1814         if (debug_prog_name == 0)
1815                 debug_prog_name = "debugfs";
1816
1817         add_error_table(&et_ext2_error_table);
1818         fprintf (stderr, "%s %s (%s)\n", debug_prog_name,
1819                  E2FSPROGS_VERSION, E2FSPROGS_DATE);
1820
1821         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1822                 switch (c) {
1823                 case 'R':
1824                         request = optarg;
1825                         break;
1826                 case 'f':
1827                         cmd_file = optarg;
1828                         break;
1829                 case 'd':
1830                         data_filename = optarg;
1831                         break;
1832                 case 'i':
1833                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1834                         break;
1835                 case 'w':
1836                         open_flags |= EXT2_FLAG_RW;
1837                         break;
1838                 case 'b':
1839                         blocksize = parse_ulong(optarg, argv[0],
1840                                                 "block size", 0);
1841                         break;
1842                 case 's':
1843                         superblock = parse_ulong(optarg, argv[0],
1844                                                  "superblock number", 0);
1845                         break;
1846                 case 'c':
1847                         catastrophic = 1;
1848                         break;
1849                 case 'V':
1850                         /* Print version number and exit */
1851                         fprintf(stderr, "\tUsing %s\n",
1852                                 error_message(EXT2_ET_BASE));
1853                         exit(0);
1854                 default:
1855                         com_err(argv[0], 0, usage, debug_prog_name);
1856                         return 1;
1857                 }
1858         }
1859         if (optind < argc)
1860                 open_filesystem(argv[optind], open_flags,
1861                                 superblock, blocksize, catastrophic,
1862                                 data_filename);
1863
1864         sci_idx = ss_create_invocation(debug_prog_name, "0.0", (char *) NULL,
1865                                        &debug_cmds, &retval);
1866         if (retval) {
1867                 ss_perror(sci_idx, retval, "creating invocation");
1868                 exit(1);
1869         }
1870         ss_get_readline(sci_idx);
1871
1872         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1873         if (retval) {
1874                 ss_perror(sci_idx, retval, "adding standard requests");
1875                 exit (1);
1876         }
1877         if (extra_cmds)
1878                 ss_add_request_table (sci_idx, extra_cmds, 1, &retval);
1879         if (retval) {
1880                 ss_perror(sci_idx, retval, "adding extra requests");
1881                 exit (1);
1882         }
1883         if (request) {
1884                 retval = 0;
1885                 retval = ss_execute_line(sci_idx, request);
1886                 if (retval) {
1887                         ss_perror(sci_idx, retval, request);
1888                         exit_status++;
1889                 }
1890         } else if (cmd_file) {
1891                 exit_status = source_file(cmd_file, sci_idx);
1892         } else {
1893                 ss_listen(sci_idx);
1894         }
1895
1896         if (current_fs)
1897                 close_filesystem();
1898
1899         remove_error_table(&et_ext2_error_table);
1900         return exit_status;
1901 }