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 = EXT2_FLAG_SOFTSUPP_FEATURES;
 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 (argc != 2) {
 185                 com_err(argv[0], 0, "Usage: %s %s", argv[0], "<native dir>");
 186                 return;
 187         }
 188
 189         if (chdir(argv[1]) == -1) {
 190                 com_err(argv[0], errno,
 191                         "while trying to change native directory to %s",
 192                         argv[1]);
 193                 return;
 194         }
 195 }
 196
 197 static void close_filesystem(NOARGS)
 198 {
 199         int     retval;
 200
 201         if (current_fs->flags & EXT2_FLAG_IB_DIRTY) {
 202                 retval = ext2fs_write_inode_bitmap(current_fs);
 203                 if (retval)
 204                         com_err("ext2fs_write_inode_bitmap", retval, 0);
 205         }
 206         if (current_fs->flags & EXT2_FLAG_BB_DIRTY) {
 207                 retval = ext2fs_write_block_bitmap(current_fs);
 208                 if (retval)
 209                         com_err("ext2fs_write_block_bitmap", retval, 0);
 210         }
 211         retval = ext2fs_close(current_fs);
 212         if (retval)
 213                 com_err("ext2fs_close", retval, 0);
 214         current_fs = NULL;
 215         return;
 216 }
 217
 218 void do_close_filesys(int argc, char **argv)
 219 {
 220         if (common_args_process(argc, argv, 1, 1, "close_filesys", "", 0))
 221                 return;
 222         close_filesystem();
 223 }
 224
 225 void do_init_filesys(int argc, char **argv)
 226 {
 227         struct ext2_super_block param;
 228         errcode_t       retval;
 229         int             err;
 230
 231         if (common_args_process(argc, argv, 3, 3, "initialize",
 232                                 "<device> <blocksize>", CHECK_FS_NOTOPEN))
 233                 return;
 234
 235         memset(&param, 0, sizeof(struct ext2_super_block));
 236         param.s_blocks_count = parse_ulong(argv[2], argv[0],
 237                                            "blocks count", &err);
 238         if (err)
 239                 return;
 240         retval = ext2fs_initialize(argv[1], 0, &param,
 241                                    unix_io_manager, &current_fs);
 242         if (retval) {
 243                 com_err(argv[1], retval, "while initializing filesystem");
 244                 current_fs = NULL;
 245                 return;
 246         }
 247         root = cwd = EXT2_ROOT_INO;
 248         return;
 249 }
 250
 251 static void print_features(struct ext2_super_block * s, FILE *f)
 252 {
 253         int     i, j, printed=0;
 254         __u32   *mask = &s->s_feature_compat, m;
 255
 256         fputs("Filesystem features:", f);
 257         for (i=0; i <3; i++,mask++) {
 258                 for (j=0,m=1; j < 32; j++, m<<=1) {
 259                         if (*mask & m) {
 260                                 fprintf(f, " %s", e2p_feature2string(i, m));
 261                                 printed++;
 262                         }
 263                 }
 264         }
 265         if (printed == 0)
 266                 fputs("(none)", f);
 267         fputs("\n", f);
 268 }
 269
 270 static void print_bg_opts(struct ext2_group_desc *gdp, int mask,
 271                           const char *str, int *first, FILE *f)
 272 {
 273         if (gdp->bg_flags & mask) {
 274                 if (*first) {
 275                         fputs("           [", f);
 276                         *first = 0;
 277                 } else
 278                         fputs(", ", f);
 279                 fputs(str, f);
 280         }
 281 }
 282
 283 void do_show_super_stats(int argc, char *argv[])
 284 {
 285         dgrp_t  i;
 286         FILE    *out;
 287         struct ext2_group_desc *gdp;
 288         int     c, header_only = 0;
 289         int     numdirs = 0, first;
 290
 291         reset_getopt();
 292         while ((c = getopt (argc, argv, "h")) != EOF) {
 293                 switch (c) {
 294                 case 'h':
 295                         header_only++;
 296                         break;
 297                 default:
 298                         goto print_usage;
 299                 }
 300         }
 301         if (optind != argc) {
 302                 goto print_usage;
 303         }
 304         if (check_fs_open(argv[0]))
 305                 return;
 306         out = open_pager();
 307
 308         list_super2(current_fs->super, out);
 309         for (i=0; i < current_fs->group_desc_count; i++)
 310                 numdirs += current_fs->group_desc[i].bg_used_dirs_count;
 311         fprintf(out, "Directories:              %d\n", numdirs);
 312
 313         if (header_only) {
 314                 close_pager(out);
 315                 return;
 316         }
 317
 318         gdp = &current_fs->group_desc[0];
 319         for (i = 0; i < current_fs->group_desc_count; i++, gdp++) {
 320                 fprintf(out, " Group %2d: block bitmap at %u, "
 321                         "inode bitmap at %u, "
 322                         "inode table at %u\n"
 323                         "           %d free %s, "
 324                         "%d free %s, "
 325                         "%d used %s\n",
 326                         i, gdp->bg_block_bitmap,
 327                         gdp->bg_inode_bitmap, gdp->bg_inode_table,
 328                         gdp->bg_free_blocks_count,
 329                         gdp->bg_free_blocks_count != 1 ? "blocks" : "block",
 330                         gdp->bg_free_inodes_count,
 331                         gdp->bg_free_inodes_count != 1 ? "inodes" : "inode",
 332                         gdp->bg_used_dirs_count,
 333                         gdp->bg_used_dirs_count != 1 ? "directories"
 334                                 : "directory");
 335                 first = 1;
 336                 print_bg_opts(gdp, EXT2_BG_INODE_UNINIT, "Inode not init",
 337                               &first, out);
 338                 print_bg_opts(gdp, EXT2_BG_BLOCK_UNINIT, "Block not init",
 339                               &first, out);
 340                 if (!first)
 341                         fputs("]\n", out);
 342         }
 343         close_pager(out);
 344         return;
 345 print_usage:
 346         fprintf(stderr, "%s: Usage: show_super [-h]\n", argv[0]);
 347 }
 348
 349 void do_dirty_filesys(int argc EXT2FS_ATTR((unused)),
 350                       char **argv EXT2FS_ATTR((unused)))
 351 {
 352         if (check_fs_open(argv[0]))
 353                 return;
 354         if (check_fs_read_write(argv[0]))
 355                 return;
 356
 357         if (argv[1] && !strcmp(argv[1], "-clean"))
 358                 current_fs->super->s_state |= EXT2_VALID_FS;
 359         else
 360                 current_fs->super->s_state &= ~EXT2_VALID_FS;
 361         ext2fs_mark_super_dirty(current_fs);
 362 }
 363
 364 struct list_blocks_struct {
 365         FILE            *f;
 366         e2_blkcnt_t     total;
 367         blk_t           first_block, last_block;
 368         e2_blkcnt_t     first_bcnt, last_bcnt;
 369         e2_blkcnt_t     first;
 370 };
 371
 372 static void finish_range(struct list_blocks_struct *lb)
 373 {
 374         if (lb->first_block == 0)
 375                 return;
 376         if (lb->first)
 377                 lb->first = 0;
 378         else
 379                 fprintf(lb->f, ", ");
 380         if (lb->first_block == lb->last_block)
 381                 fprintf(lb->f, "(%lld):%u",
 382                         (long long)lb->first_bcnt, lb->first_block);
 383         else
 384                 fprintf(lb->f, "(%lld-%lld):%u-%u",
 385                         (long long)lb->first_bcnt, (long long)lb->last_bcnt,
 386                         lb->first_block, lb->last_block);
 387         lb->first_block = 0;
 388 }
 389
 390 static int list_blocks_proc(ext2_filsys fs EXT2FS_ATTR((unused)),
 391                             blk_t *blocknr, e2_blkcnt_t blockcnt,
 392                             blk_t ref_block EXT2FS_ATTR((unused)),
 393                             int ref_offset EXT2FS_ATTR((unused)),
 394                             void *private)
 395 {
 396         struct list_blocks_struct *lb = (struct list_blocks_struct *) private;
 397
 398         lb->total++;
 399         if (blockcnt >= 0) {
 400                 /*
 401                  * See if we can add on to the existing range (if it exists)
 402                  */
 403                 if (lb->first_block &&
 404                     (lb->last_block+1 == *blocknr) &&
 405                     (lb->last_bcnt+1 == blockcnt)) {
 406                         lb->last_block = *blocknr;
 407                         lb->last_bcnt = blockcnt;
 408                         return 0;
 409                 }
 410                 /*
 411                  * Start a new range.
 412                  */
 413                 finish_range(lb);
 414                 lb->first_block = lb->last_block = *blocknr;
 415                 lb->first_bcnt = lb->last_bcnt = blockcnt;
 416                 return 0;
 417         }
 418         /*
 419          * Not a normal block.  Always force a new range.
 420          */
 421         finish_range(lb);
 422         if (lb->first)
 423                 lb->first = 0;
 424         else
 425                 fprintf(lb->f, ", ");
 426         if (blockcnt == -1)
 427                 fprintf(lb->f, "(IND):%u", *blocknr);
 428         else if (blockcnt == -2)
 429                 fprintf(lb->f, "(DIND):%u", *blocknr);
 430         else if (blockcnt == -3)
 431                 fprintf(lb->f, "(TIND):%u", *blocknr);
 432         return 0;
 433 }
 434
 435 static void dump_xattr_string(FILE *out, const char *str, int len)
 436 {
 437         int printable = 0;
 438         int i;
 439
 440         /* check: is string "printable enough?" */
 441         for (i = 0; i < len; i++)
 442                 if (isprint(str[i]))
 443                         printable++;
 444
 445         if (printable <= len*7/8)
 446                 printable = 0;
 447
 448         for (i = 0; i < len; i++)
 449                 if (printable)
 450                         fprintf(out, isprint(str[i]) ? "%c" : "\\%03o",
 451                                 (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, 0, 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             case EXT2_OS_MASIX:
 575                 frag = inode->osd2.masix2.m_i_frag;
 576                 fsize = inode->osd2.masix2.m_i_fsize;
 577                 break;
 578             default:
 579                 frag = fsize = 0;
 580         }
 581         fprintf(out, "%sFragment:  Address: %d    Number: %d    Size: %d\n",
 582                 prefix, inode->i_faddr, frag, fsize);
 583         fprintf(out, "%sctime: 0x%08x -- %s", prefix, inode->i_ctime,
 584                 time_to_string(inode->i_ctime));
 585         fprintf(out, "%satime: 0x%08x -- %s", prefix, inode->i_atime,
 586                 time_to_string(inode->i_atime));
 587         fprintf(out, "%smtime: 0x%08x -- %s", prefix, inode->i_mtime,
 588                 time_to_string(inode->i_mtime));
 589         if (inode->i_dtime)
 590           fprintf(out, "%sdtime: 0x%08x -- %s", prefix, inode->i_dtime,
 591                   time_to_string(inode->i_dtime));
 592         if (EXT2_INODE_SIZE(current_fs->super) > EXT2_GOOD_OLD_INODE_SIZE)
 593                 internal_dump_inode_extra(out, prefix, inode_num,
 594                                           (struct ext2_inode_large *) inode);
 595         if (LINUX_S_ISLNK(inode->i_mode) && ext2fs_inode_data_blocks(current_fs,inode) == 0)
 596                 fprintf(out, "%sFast_link_dest: %.*s\n", prefix,
 597                         (int) inode->i_size, (char *)inode->i_block);
 598         else if (LINUX_S_ISBLK(inode->i_mode) || LINUX_S_ISCHR(inode->i_mode)) {
 599                 int major, minor;
 600                 const char *devnote;
 601
 602                 if (inode->i_block[0]) {
 603                         major = (inode->i_block[0] >> 8) & 255;
 604                         minor = inode->i_block[0] & 255;
 605                         devnote = "";
 606                 } else {
 607                         major = (inode->i_block[1] & 0xfff00) >> 8;
 608                         minor = ((inode->i_block[1] & 0xff) |
 609                                  ((inode->i_block[1] >> 12) & 0xfff00));
 610                         devnote = "(New-style) ";
 611                 }
 612                 fprintf(out, "%sDevice major/minor number: %02d:%02d (hex %02x:%02x)\n",
 613                         devnote, major, minor, major, minor);
 614         }
 615         else if (do_dump_blocks)
 616                 dump_blocks(out, prefix, inode_num);
 617 }
 618
 619 static void dump_inode(ext2_ino_t inode_num, struct ext2_inode *inode)
 620 {
 621         FILE    *out;
 622
 623         out = open_pager();
 624         internal_dump_inode(out, "", inode_num, inode, 1);
 625         close_pager(out);
 626 }
 627
 628 void do_stat(int argc, char *argv[])
 629 {
 630         ext2_ino_t      inode;
 631         struct ext2_inode * inode_buf;
 632
 633         if (check_fs_open(argv[0]))
 634                 return;
 635
 636         inode_buf = (struct ext2_inode *)
 637                         malloc(EXT2_INODE_SIZE(current_fs->super));
 638         if (!inode_buf) {
 639                 fprintf(stderr, "do_stat: can't allocate buffer\n");
 640                 return;
 641         }
 642
 643         if (common_inode_args_process(argc, argv, &inode, 0)) {
 644                 free(inode_buf);
 645                 return;
 646         }
 647
 648         if (debugfs_read_inode_full(inode, inode_buf, argv[0],
 649                                         EXT2_INODE_SIZE(current_fs->super))) {
 650                 free(inode_buf);
 651                 return;
 652         }
 653
 654         dump_inode(inode, inode_buf);
 655         free(inode_buf);
 656         return;
 657 }
 658
 659 void do_chroot(int argc, char *argv[])
 660 {
 661         ext2_ino_t inode;
 662         int retval;
 663
 664         if (common_inode_args_process(argc, argv, &inode, 0))
 665                 return;
 666
 667         retval = ext2fs_check_directory(current_fs, inode);
 668         if (retval)  {
 669                 com_err(argv[1], retval, 0);
 670                 return;
 671         }
 672         root = inode;
 673 }
 674
 675 void do_clri(int argc, char *argv[])
 676 {
 677         ext2_ino_t inode;
 678         struct ext2_inode inode_buf;
 679
 680         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
 681                 return;
 682
 683         if (debugfs_read_inode(inode, &inode_buf, argv[0]))
 684                 return;
 685         memset(&inode_buf, 0, sizeof(inode_buf));
 686         if (debugfs_write_inode(inode, &inode_buf, argv[0]))
 687                 return;
 688 }
 689
 690 void do_freei(int argc, char *argv[])
 691 {
 692         ext2_ino_t inode;
 693
 694         if (common_inode_args_process(argc, argv, &inode,
 695                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 696                 return;
 697
 698         if (!ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 699                 com_err(argv[0], 0, "Warning: inode already clear");
 700         ext2fs_unmark_inode_bitmap(current_fs->inode_map,inode);
 701         ext2fs_mark_ib_dirty(current_fs);
 702 }
 703
 704 void do_seti(int argc, char *argv[])
 705 {
 706         ext2_ino_t inode;
 707
 708         if (common_inode_args_process(argc, argv, &inode,
 709                                       CHECK_FS_RW | CHECK_FS_BITMAPS))
 710                 return;
 711
 712         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 713                 com_err(argv[0], 0, "Warning: inode already set");
 714         ext2fs_mark_inode_bitmap(current_fs->inode_map,inode);
 715         ext2fs_mark_ib_dirty(current_fs);
 716 }
 717
 718 void do_testi(int argc, char *argv[])
 719 {
 720         ext2_ino_t inode;
 721
 722         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_BITMAPS))
 723                 return;
 724
 725         if (ext2fs_test_inode_bitmap(current_fs->inode_map,inode))
 726                 printf("Inode %u is marked in use\n", inode);
 727         else
 728                 printf("Inode %u is not in use\n", inode);
 729 }
 730
 731 void do_freeb(int argc, char *argv[])
 732 {
 733         blk_t block;
 734         blk_t count = 1;
 735
 736         if (common_block_args_process(argc, argv, &block, &count))
 737                 return;
 738         if (check_fs_read_write(argv[0]))
 739                 return;
 740         while (count-- > 0) {
 741                 if (!ext2fs_test_block_bitmap(current_fs->block_map,block))
 742                         com_err(argv[0], 0, "Warning: block %u already clear",
 743                                 block);
 744                 ext2fs_unmark_block_bitmap(current_fs->block_map,block);
 745                 block++;
 746         }
 747         ext2fs_mark_bb_dirty(current_fs);
 748 }
 749
 750 void do_setb(int argc, char *argv[])
 751 {
 752         blk_t block;
 753         blk_t count = 1;
 754
 755         if (common_block_args_process(argc, argv, &block, &count))
 756                 return;
 757         if (check_fs_read_write(argv[0]))
 758                 return;
 759         while (count-- > 0) {
 760                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 761                         com_err(argv[0], 0, "Warning: block %u already set",
 762                                 block);
 763                 ext2fs_mark_block_bitmap(current_fs->block_map,block);
 764                 block++;
 765         }
 766         ext2fs_mark_bb_dirty(current_fs);
 767 }
 768
 769 void do_testb(int argc, char *argv[])
 770 {
 771         blk_t block;
 772         blk_t count = 1;
 773
 774         if (common_block_args_process(argc, argv, &block, &count))
 775                 return;
 776         while (count-- > 0) {
 777                 if (ext2fs_test_block_bitmap(current_fs->block_map,block))
 778                         printf("Block %u marked in use\n", block);
 779                 else
 780                         printf("Block %u not in use\n", block);
 781                 block++;
 782         }
 783 }
 784
 785 static void modify_u8(char *com, const char *prompt,
 786                       const char *format, __u8 *val)
 787 {
 788         char buf[200];
 789         unsigned long v;
 790         char *tmp;
 791
 792         sprintf(buf, format, *val);
 793         printf("%30s    [%s] ", prompt, buf);
 794         fgets(buf, sizeof(buf), stdin);
 795         if (buf[strlen (buf) - 1] == '\n')
 796                 buf[strlen (buf) - 1] = '\0';
 797         if (!buf[0])
 798                 return;
 799         v = strtoul(buf, &tmp, 0);
 800         if (*tmp)
 801                 com_err(com, 0, "Bad value - %s", buf);
 802         else
 803                 *val = v;
 804 }
 805
 806 static void modify_u16(char *com, const char *prompt,
 807                        const char *format, __u16 *val)
 808 {
 809         char buf[200];
 810         unsigned long v;
 811         char *tmp;
 812
 813         sprintf(buf, format, *val);
 814         printf("%30s    [%s] ", prompt, buf);
 815         fgets(buf, sizeof(buf), stdin);
 816         if (buf[strlen (buf) - 1] == '\n')
 817                 buf[strlen (buf) - 1] = '\0';
 818         if (!buf[0])
 819                 return;
 820         v = strtoul(buf, &tmp, 0);
 821         if (*tmp)
 822                 com_err(com, 0, "Bad value - %s", buf);
 823         else
 824                 *val = v;
 825 }
 826
 827 static void modify_u32(char *com, const char *prompt,
 828                        const char *format, __u32 *val)
 829 {
 830         char buf[200];
 831         unsigned long v;
 832         char *tmp;
 833
 834         sprintf(buf, format, *val);
 835         printf("%30s    [%s] ", prompt, buf);
 836         fgets(buf, sizeof(buf), stdin);
 837         if (buf[strlen (buf) - 1] == '\n')
 838                 buf[strlen (buf) - 1] = '\0';
 839         if (!buf[0])
 840                 return;
 841         v = strtoul(buf, &tmp, 0);
 842         if (*tmp)
 843                 com_err(com, 0, "Bad value - %s", buf);
 844         else
 845                 *val = v;
 846 }
 847
 848
 849 void do_modify_inode(int argc, char *argv[])
 850 {
 851         struct ext2_inode inode;
 852         ext2_ino_t      inode_num;
 853         int             i;
 854         unsigned char   *frag, *fsize;
 855         char            buf[80];
 856         int             os;
 857         const char      *hex_format = "0x%x";
 858         const char      *octal_format = "0%o";
 859         const char      *decimal_format = "%d";
 860         const char      *unsignedlong_format = "%lu";
 861
 862         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
 863                 return;
 864
 865         os = current_fs->super->s_creator_os;
 866
 867         if (debugfs_read_inode(inode_num, &inode, argv[1]))
 868                 return;
 869
 870         modify_u16(argv[0], "Mode", octal_format, &inode.i_mode);
 871         modify_u16(argv[0], "User ID", decimal_format, &inode.i_uid);
 872         modify_u16(argv[0], "Group ID", decimal_format, &inode.i_gid);
 873         modify_u32(argv[0], "Size", unsignedlong_format, &inode.i_size);
 874         modify_u32(argv[0], "Creation time", decimal_format, &inode.i_ctime);
 875         modify_u32(argv[0], "Modification time", decimal_format, &inode.i_mtime);
 876         modify_u32(argv[0], "Access time", decimal_format, &inode.i_atime);
 877         modify_u32(argv[0], "Deletion time", decimal_format, &inode.i_dtime);
 878         modify_u16(argv[0], "Link count", decimal_format, &inode.i_links_count);
 879         if (os == EXT2_OS_LINUX)
 880                 modify_u16(argv[0], "Block count high", unsignedlong_format,
 881                            &inode.osd2.linux2.l_i_blocks_hi);
 882         modify_u32(argv[0], "Block count", unsignedlong_format, &inode.i_blocks);
 883         modify_u32(argv[0], "File flags", hex_format, &inode.i_flags);
 884         modify_u32(argv[0], "Generation", hex_format, &inode.i_generation);
 885 #if 0
 886         modify_u32(argv[0], "Reserved1", decimal_format, &inode.i_reserved1);
 887 #endif
 888         modify_u32(argv[0], "File acl", decimal_format, &inode.i_file_acl);
 889         if (LINUX_S_ISDIR(inode.i_mode))
 890                 modify_u32(argv[0], "Directory acl", decimal_format, &inode.i_dir_acl);
 891         else
 892                 modify_u32(argv[0], "High 32bits of size", decimal_format, &inode.i_size_high);
 893
 894         if (os == EXT2_OS_HURD)
 895                 modify_u32(argv[0], "Translator Block",
 896                             decimal_format, &inode.osd1.hurd1.h_i_translator);
 897
 898         modify_u32(argv[0], "Fragment address", decimal_format, &inode.i_faddr);
 899         switch (os) {
 900             case EXT2_OS_HURD:
 901                 frag = &inode.osd2.hurd2.h_i_frag;
 902                 fsize = &inode.osd2.hurd2.h_i_fsize;
 903                 break;
 904             case EXT2_OS_MASIX:
 905                 frag = &inode.osd2.masix2.m_i_frag;
 906                 fsize = &inode.osd2.masix2.m_i_fsize;
 907                 break;
 908             default:
 909                 frag = fsize = 0;
 910         }
 911         if (frag)
 912                 modify_u8(argv[0], "Fragment number", decimal_format, frag);
 913         if (fsize)
 914                 modify_u8(argv[0], "Fragment size", decimal_format, fsize);
 915
 916         for (i=0;  i < EXT2_NDIR_BLOCKS; i++) {
 917                 sprintf(buf, "Direct Block #%d", i);
 918                 modify_u32(argv[0], buf, decimal_format, &inode.i_block[i]);
 919         }
 920         modify_u32(argv[0], "Indirect Block", decimal_format,
 921                     &inode.i_block[EXT2_IND_BLOCK]);
 922         modify_u32(argv[0], "Double Indirect Block", decimal_format,
 923                     &inode.i_block[EXT2_DIND_BLOCK]);
 924         modify_u32(argv[0], "Triple Indirect Block", decimal_format,
 925                     &inode.i_block[EXT2_TIND_BLOCK]);
 926         if (debugfs_write_inode(inode_num, &inode, argv[1]))
 927                 return;
 928 }
 929
 930 void do_change_working_dir(int argc, char *argv[])
 931 {
 932         ext2_ino_t      inode;
 933         int             retval;
 934
 935         if (common_inode_args_process(argc, argv, &inode, 0))
 936                 return;
 937
 938         retval = ext2fs_check_directory(current_fs, inode);
 939         if (retval) {
 940                 com_err(argv[1], retval, 0);
 941                 return;
 942         }
 943         cwd = inode;
 944         return;
 945 }
 946
 947 void do_print_working_directory(int argc, char *argv[])
 948 {
 949         int     retval;
 950         char    *pathname = NULL;
 951
 952         if (common_args_process(argc, argv, 1, 1,
 953                                 "print_working_directory", "", 0))
 954                 return;
 955
 956         retval = ext2fs_get_pathname(current_fs, cwd, 0, &pathname);
 957         if (retval) {
 958                 com_err(argv[0], retval,
 959                         "while trying to get pathname of cwd");
 960         }
 961         printf("[pwd]   INODE: %6u  PATH: %s\n",
 962                cwd, pathname ? pathname : "NULL");
 963         if (pathname) {
 964                 free(pathname);
 965                 pathname = NULL;
 966         }
 967         retval = ext2fs_get_pathname(current_fs, root, 0, &pathname);
 968         if (retval) {
 969                 com_err(argv[0], retval,
 970                         "while trying to get pathname of root");
 971         }
 972         printf("[root]  INODE: %6u  PATH: %s\n",
 973                root, pathname ? pathname : "NULL");
 974         if (pathname) {
 975                 free(pathname);
 976                 pathname = NULL;
 977         }
 978         return;
 979 }
 980
 981 /*
 982  * Given a mode, return the ext2 file type
 983  */
 984 static int ext2_file_type(unsigned int mode)
 985 {
 986         if (LINUX_S_ISREG(mode))
 987                 return EXT2_FT_REG_FILE;
 988
 989         if (LINUX_S_ISDIR(mode))
 990                 return EXT2_FT_DIR;
 991
 992         if (LINUX_S_ISCHR(mode))
 993                 return EXT2_FT_CHRDEV;
 994
 995         if (LINUX_S_ISBLK(mode))
 996                 return EXT2_FT_BLKDEV;
 997
 998         if (LINUX_S_ISLNK(mode))
 999                 return EXT2_FT_SYMLINK;
1000
1001         if (LINUX_S_ISFIFO(mode))
1002                 return EXT2_FT_FIFO;
1003
1004         if (LINUX_S_ISSOCK(mode))
1005                 return EXT2_FT_SOCK;
1006
1007         return 0;
1008 }
1009
1010 static void make_link(char *sourcename, char *destname)
1011 {
1012         ext2_ino_t      ino;
1013         struct ext2_inode inode;
1014         int             retval;
1015         ext2_ino_t      dir;
1016         char            *dest, *cp, *basename;
1017
1018         /*
1019          * Get the source inode
1020          */
1021         ino = string_to_inode(sourcename);
1022         if (!ino)
1023                 return;
1024         basename = strrchr(sourcename, '/');
1025         if (basename)
1026                 basename++;
1027         else
1028                 basename = sourcename;
1029         /*
1030          * Figure out the destination.  First see if it exists and is
1031          * a directory.
1032          */
1033         if (! (retval=ext2fs_namei(current_fs, root, cwd, destname, &dir)))
1034                 dest = basename;
1035         else {
1036                 /*
1037                  * OK, it doesn't exist.  See if it is
1038                  * '<dir>/basename' or 'basename'
1039                  */
1040                 cp = strrchr(destname, '/');
1041                 if (cp) {
1042                         *cp = 0;
1043                         dir = string_to_inode(destname);
1044                         if (!dir)
1045                                 return;
1046                         dest = cp+1;
1047                 } else {
1048                         dir = cwd;
1049                         dest = destname;
1050                 }
1051         }
1052
1053         if (debugfs_read_inode(ino, &inode, sourcename))
1054                 return;
1055
1056         retval = ext2fs_link(current_fs, dir, dest, ino,
1057                              ext2_file_type(inode.i_mode));
1058         if (retval)
1059                 com_err("make_link", retval, 0);
1060         return;
1061 }
1062
1063
1064 void do_link(int argc, char *argv[])
1065 {
1066         if (common_args_process(argc, argv, 3, 3, "link",
1067                                 "<source file> <dest_name>", CHECK_FS_RW))
1068                 return;
1069
1070         make_link(argv[1], argv[2]);
1071 }
1072
1073 static int mark_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1074                             int blockcnt EXT2FS_ATTR((unused)),
1075                             void *private EXT2FS_ATTR((unused)))
1076 {
1077         blk_t   block;
1078
1079         block = *blocknr;
1080         ext2fs_block_alloc_stats(fs, block, +1);
1081         return 0;
1082 }
1083
1084 void do_undel(int argc, char *argv[])
1085 {
1086         ext2_ino_t      ino;
1087         struct ext2_inode inode;
1088
1089         if (common_args_process(argc, argv, 2, 3, "undelete",
1090                                 "<inode_num> [dest_name]",
1091                                 CHECK_FS_RW | CHECK_FS_BITMAPS))
1092                 return;
1093
1094         ino = string_to_inode(argv[1]);
1095         if (!ino)
1096                 return;
1097
1098         if (debugfs_read_inode(ino, &inode, argv[1]))
1099                 return;
1100
1101         if (ext2fs_test_inode_bitmap(current_fs->inode_map, ino)) {
1102                 com_err(argv[1], 0, "Inode is not marked as deleted");
1103                 return;
1104         }
1105
1106         /*
1107          * XXX this function doesn't handle changing the links count on the
1108          * parent directory when undeleting a directory.
1109          */
1110         inode.i_links_count = LINUX_S_ISDIR(inode.i_mode) ? 2 : 1;
1111         inode.i_dtime = 0;
1112
1113         if (debugfs_write_inode(ino, &inode, argv[0]))
1114                 return;
1115
1116         ext2fs_block_iterate(current_fs, ino, 0, NULL,
1117                              mark_blocks_proc, NULL);
1118
1119         ext2fs_inode_alloc_stats2(current_fs, ino, +1, 0);
1120
1121         if (argc > 2)
1122                 make_link(argv[1], argv[2]);
1123 }
1124
1125 static void unlink_file_by_name(char *filename)
1126 {
1127         int             retval;
1128         ext2_ino_t      dir;
1129         char            *basename;
1130
1131         basename = strrchr(filename, '/');
1132         if (basename) {
1133                 *basename++ = '\0';
1134                 dir = string_to_inode(filename);
1135                 if (!dir)
1136                         return;
1137         } else {
1138                 dir = cwd;
1139                 basename = filename;
1140         }
1141         retval = ext2fs_unlink(current_fs, dir, basename, 0, 0);
1142         if (retval)
1143                 com_err("unlink_file_by_name", retval, 0);
1144         return;
1145 }
1146
1147 void do_unlink(int argc, char *argv[])
1148 {
1149         if (common_args_process(argc, argv, 2, 2, "link",
1150                                 "<pathname>", CHECK_FS_RW))
1151                 return;
1152
1153         unlink_file_by_name(argv[1]);
1154 }
1155
1156 void do_find_free_block(int argc, char *argv[])
1157 {
1158         blk_t   free_blk, goal, first_free = 0;
1159         int             count;
1160         errcode_t       retval;
1161         char            *tmp;
1162
1163         if ((argc > 3) || (argc==2 && *argv[1] == '?')) {
1164                 com_err(argv[0], 0, "Usage: find_free_block [count [goal]]");
1165                 return;
1166         }
1167         if (check_fs_open(argv[0]))
1168                 return;
1169
1170         if (argc > 1) {
1171                 count = strtol(argv[1],&tmp,0);
1172                 if (*tmp) {
1173                         com_err(argv[0], 0, "Bad count - %s", argv[1]);
1174                         return;
1175                 }
1176         } else
1177                 count = 1;
1178
1179         if (argc > 2) {
1180                 goal = strtol(argv[2], &tmp, 0);
1181                 if (*tmp) {
1182                         com_err(argv[0], 0, "Bad goal - %s", argv[1]);
1183                         return;
1184                 }
1185         }
1186         else
1187                 goal = current_fs->super->s_first_data_block;
1188
1189         printf("Free blocks found: ");
1190         free_blk = goal - 1;
1191         while (count-- > 0) {
1192                 retval = ext2fs_new_block(current_fs, free_blk + 1, 0,
1193                                           &free_blk);
1194                 if (first_free) {
1195                         if (first_free == free_blk)
1196                                 break;
1197                 } else
1198                         first_free = free_blk;
1199                 if (retval) {
1200                         com_err("ext2fs_new_block", retval, 0);
1201                         return;
1202                 } else
1203                         printf("%u ", free_blk);
1204         }
1205         printf("\n");
1206 }
1207
1208 void do_find_free_inode(int argc, char *argv[])
1209 {
1210         ext2_ino_t      free_inode, dir;
1211         int             mode;
1212         int             retval;
1213         char            *tmp;
1214
1215         if (argc > 3 || (argc>1 && *argv[1] == '?')) {
1216                 com_err(argv[0], 0, "Usage: find_free_inode [dir] [mode]");
1217                 return;
1218         }
1219         if (check_fs_open(argv[0]))
1220                 return;
1221
1222         if (argc > 1) {
1223                 dir = strtol(argv[1], &tmp, 0);
1224                 if (*tmp) {
1225                         com_err(argv[0], 0, "Bad dir - %s", argv[1]);
1226                         return;
1227                 }
1228         }
1229         else
1230                 dir = root;
1231         if (argc > 2) {
1232                 mode = strtol(argv[2], &tmp, 0);
1233                 if (*tmp) {
1234                         com_err(argv[0], 0, "Bad mode - %s", argv[2]);
1235                         return;
1236                 }
1237         } else
1238                 mode = 010755;
1239
1240         retval = ext2fs_new_inode(current_fs, dir, mode, 0, &free_inode);
1241         if (retval)
1242                 com_err("ext2fs_new_inode", retval, 0);
1243         else
1244                 printf("Free inode found: %u\n", free_inode);
1245 }
1246
1247 static errcode_t copy_file(int fd, ext2_ino_t newfile)
1248 {
1249         ext2_file_t     e2_file;
1250         errcode_t       retval;
1251         int             got;
1252         unsigned int    written;
1253         char            buf[8192];
1254         char            *ptr;
1255
1256         retval = ext2fs_file_open(current_fs, newfile,
1257                                   EXT2_FILE_WRITE, &e2_file);
1258         if (retval)
1259                 return retval;
1260
1261         while (1) {
1262                 got = read(fd, buf, sizeof(buf));
1263                 if (got == 0)
1264                         break;
1265                 if (got < 0) {
1266                         retval = errno;
1267                         goto fail;
1268                 }
1269                 ptr = buf;
1270                 while (got > 0) {
1271                         retval = ext2fs_file_write(e2_file, ptr,
1272                                                    got, &written);
1273                         if (retval)
1274                                 goto fail;
1275
1276                         got -= written;
1277                         ptr += written;
1278                 }
1279         }
1280         retval = ext2fs_file_close(e2_file);
1281         return retval;
1282
1283 fail:
1284         (void) ext2fs_file_close(e2_file);
1285         return retval;
1286 }
1287
1288
1289 void do_write(int argc, char *argv[])
1290 {
1291         int             fd;
1292         struct stat     statbuf;
1293         ext2_ino_t      newfile;
1294         errcode_t       retval;
1295         struct ext2_inode inode;
1296
1297         if (common_args_process(argc, argv, 3, 3, "write",
1298                                 "<native file> <new file>", CHECK_FS_RW))
1299                 return;
1300
1301         fd = open(argv[1], O_RDONLY);
1302         if (fd < 0) {
1303                 com_err(argv[1], errno, 0);
1304                 return;
1305         }
1306         if (fstat(fd, &statbuf) < 0) {
1307                 com_err(argv[1], errno, 0);
1308                 close(fd);
1309                 return;
1310         }
1311
1312         retval = ext2fs_namei(current_fs, root, cwd, argv[2], &newfile);
1313         if (retval == 0) {
1314                 com_err(argv[0], 0, "The file '%s' already exists\n", argv[2]);
1315                 close(fd);
1316                 return;
1317         }
1318
1319         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1320         if (retval) {
1321                 com_err(argv[0], retval, 0);
1322                 close(fd);
1323                 return;
1324         }
1325         printf("Allocated inode: %u\n", newfile);
1326         retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1327                              EXT2_FT_REG_FILE);
1328         if (retval == EXT2_ET_DIR_NO_SPACE) {
1329                 retval = ext2fs_expand_dir(current_fs, cwd);
1330                 if (retval) {
1331                         com_err(argv[0], retval, "while expanding directory");
1332                         return;
1333                 }
1334                 retval = ext2fs_link(current_fs, cwd, argv[2], newfile,
1335                                      EXT2_FT_REG_FILE);
1336         }
1337         if (retval) {
1338                 com_err(argv[2], retval, 0);
1339                 close(fd);
1340                 return;
1341         }
1342         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1343                 com_err(argv[0], 0, "Warning: inode already set");
1344         ext2fs_inode_alloc_stats2(current_fs, newfile, +1, 0);
1345         memset(&inode, 0, sizeof(inode));
1346         inode.i_mode = (statbuf.st_mode & ~LINUX_S_IFMT) | LINUX_S_IFREG;
1347         inode.i_atime = inode.i_ctime = inode.i_mtime =
1348                 current_fs->now ? current_fs->now : time(0);
1349         inode.i_links_count = 1;
1350         inode.i_size = statbuf.st_size;
1351         if (debugfs_write_new_inode(newfile, &inode, argv[0])) {
1352                 close(fd);
1353                 return;
1354         }
1355         if (LINUX_S_ISREG(inode.i_mode)) {
1356                 retval = copy_file(fd, newfile);
1357                 if (retval)
1358                         com_err("copy_file", retval, 0);
1359         }
1360         close(fd);
1361 }
1362
1363 void do_mknod(int argc, char *argv[])
1364 {
1365         unsigned long   mode, major, minor;
1366         ext2_ino_t      newfile;
1367         errcode_t       retval;
1368         struct ext2_inode inode;
1369         int             filetype, nr;
1370
1371         if (check_fs_open(argv[0]))
1372                 return;
1373         if (argc < 3 || argv[2][1]) {
1374         usage:
1375                 com_err(argv[0], 0, "Usage: mknod <name> [p| [c|b] <major> <minor>]");
1376                 return;
1377         }
1378         mode = minor = major = 0;
1379         switch (argv[2][0]) {
1380                 case 'p':
1381                         mode = LINUX_S_IFIFO;
1382                         filetype = EXT2_FT_FIFO;
1383                         nr = 3;
1384                         break;
1385                 case 'c':
1386                         mode = LINUX_S_IFCHR;
1387                         filetype = EXT2_FT_CHRDEV;
1388                         nr = 5;
1389                         break;
1390                 case 'b':
1391                         mode = LINUX_S_IFBLK;
1392                         filetype = EXT2_FT_BLKDEV;
1393                         nr = 5;
1394                         break;
1395                 default:
1396                         filetype = 0;
1397                         nr = 0;
1398         }
1399         if (nr == 5) {
1400                 major = strtoul(argv[3], argv+3, 0);
1401                 minor = strtoul(argv[4], argv+4, 0);
1402                 if (major > 65535 || minor > 65535 || argv[3][0] || argv[4][0])
1403                         nr = 0;
1404         }
1405         if (argc != nr)
1406                 goto usage;
1407         if (check_fs_read_write(argv[0]))
1408                 return;
1409         retval = ext2fs_new_inode(current_fs, cwd, 010755, 0, &newfile);
1410         if (retval) {
1411                 com_err(argv[0], retval, 0);
1412                 return;
1413         }
1414         printf("Allocated inode: %u\n", newfile);
1415         retval = ext2fs_link(current_fs, cwd, argv[1], newfile, filetype);
1416         if (retval == EXT2_ET_DIR_NO_SPACE) {
1417                 retval = ext2fs_expand_dir(current_fs, cwd);
1418                 if (retval) {
1419                         com_err(argv[0], retval, "while expanding directory");
1420                         return;
1421                 }
1422                 retval = ext2fs_link(current_fs, cwd, argv[1], newfile,
1423                                      filetype);
1424         }
1425         if (retval) {
1426                 com_err(argv[1], retval, 0);
1427                 return;
1428         }
1429         if (ext2fs_test_inode_bitmap(current_fs->inode_map,newfile))
1430                 com_err(argv[0], 0, "Warning: inode already set");
1431         ext2fs_mark_inode_bitmap(current_fs->inode_map, newfile);
1432         ext2fs_mark_ib_dirty(current_fs);
1433         memset(&inode, 0, sizeof(inode));
1434         inode.i_mode = mode;
1435         inode.i_atime = inode.i_ctime = inode.i_mtime =
1436                 current_fs->now ? current_fs->now : time(0);
1437         if ((major < 256) && (minor < 256)) {
1438                 inode.i_block[0] = major*256+minor;
1439                 inode.i_block[1] = 0;
1440         } else {
1441                 inode.i_block[0] = 0;
1442                 inode.i_block[1] = (minor & 0xff) | (major << 8) | ((minor & ~0xff) << 12);
1443         }
1444         inode.i_links_count = 1;
1445         if (debugfs_write_new_inode(newfile, &inode, argv[0]))
1446                 return;
1447 }
1448
1449 void do_mkdir(int argc, char *argv[])
1450 {
1451         char    *cp;
1452         ext2_ino_t      parent;
1453         char    *name;
1454         errcode_t retval;
1455
1456         if (common_args_process(argc, argv, 2, 2, "mkdir",
1457                                 "<filename>", CHECK_FS_RW))
1458                 return;
1459
1460         cp = strrchr(argv[1], '/');
1461         if (cp) {
1462                 *cp = 0;
1463                 parent = string_to_inode(argv[1]);
1464                 if (!parent) {
1465                         com_err(argv[1], ENOENT, 0);
1466                         return;
1467                 }
1468                 name = cp+1;
1469         } else {
1470                 parent = cwd;
1471                 name = argv[1];
1472         }
1473
1474 try_again:
1475         retval = ext2fs_mkdir(current_fs, parent, 0, name);
1476         if (retval == EXT2_ET_DIR_NO_SPACE) {
1477                 retval = ext2fs_expand_dir(current_fs, parent);
1478                 if (retval) {
1479                         com_err("argv[0]", retval, "while expanding directory");
1480                         return;
1481                 }
1482                 goto try_again;
1483         }
1484         if (retval) {
1485                 com_err("ext2fs_mkdir", retval, 0);
1486                 return;
1487         }
1488
1489 }
1490
1491 static int release_blocks_proc(ext2_filsys fs, blk_t *blocknr,
1492                                int blockcnt EXT2FS_ATTR((unused)),
1493                                void *private EXT2FS_ATTR((unused)))
1494 {
1495         blk_t   block;
1496
1497         block = *blocknr;
1498         ext2fs_block_alloc_stats(fs, block, -1);
1499         return 0;
1500 }
1501
1502 static void kill_file_by_inode(ext2_ino_t inode)
1503 {
1504         struct ext2_inode inode_buf;
1505
1506         if (debugfs_read_inode(inode, &inode_buf, 0))
1507                 return;
1508         inode_buf.i_dtime = current_fs->now ? current_fs->now : time(0);
1509         if (debugfs_write_inode(inode, &inode_buf, 0))
1510                 return;
1511         if (!ext2fs_inode_has_valid_blocks(&inode_buf))
1512                 return;
1513
1514         ext2fs_block_iterate(current_fs, inode, 0, NULL,
1515                              release_blocks_proc, NULL);
1516         printf("\n");
1517         ext2fs_inode_alloc_stats2(current_fs, inode, -1,
1518                                   LINUX_S_ISDIR(inode_buf.i_mode));
1519 }
1520
1521
1522 void do_kill_file(int argc, char *argv[])
1523 {
1524         ext2_ino_t inode_num;
1525
1526         if (common_inode_args_process(argc, argv, &inode_num, CHECK_FS_RW))
1527                 return;
1528
1529         kill_file_by_inode(inode_num);
1530 }
1531
1532 void do_rm(int argc, char *argv[])
1533 {
1534         int retval;
1535         ext2_ino_t inode_num;
1536         struct ext2_inode inode;
1537
1538         if (common_args_process(argc, argv, 2, 2, "rm",
1539                                 "<filename>", CHECK_FS_RW))
1540                 return;
1541
1542         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1543         if (retval) {
1544                 com_err(argv[0], retval, "while trying to resolve filename");
1545                 return;
1546         }
1547
1548         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1549                 return;
1550
1551         if (LINUX_S_ISDIR(inode.i_mode)) {
1552                 com_err(argv[0], 0, "file is a directory");
1553                 return;
1554         }
1555
1556         --inode.i_links_count;
1557         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1558                 return;
1559
1560         unlink_file_by_name(argv[1]);
1561         if (inode.i_links_count == 0)
1562                 kill_file_by_inode(inode_num);
1563 }
1564
1565 struct rd_struct {
1566         ext2_ino_t      parent;
1567         int             empty;
1568 };
1569
1570 static int rmdir_proc(ext2_ino_t dir EXT2FS_ATTR((unused)),
1571                       int       entry EXT2FS_ATTR((unused)),
1572                       struct ext2_dir_entry *dirent,
1573                       int       offset EXT2FS_ATTR((unused)),
1574                       int       blocksize EXT2FS_ATTR((unused)),
1575                       char      *buf EXT2FS_ATTR((unused)),
1576                       void      *private)
1577 {
1578         struct rd_struct *rds = (struct rd_struct *) private;
1579
1580         if (dirent->inode == 0)
1581                 return 0;
1582         if (((dirent->name_len&0xFF) == 1) && (dirent->name[0] == '.'))
1583                 return 0;
1584         if (((dirent->name_len&0xFF) == 2) && (dirent->name[0] == '.') &&
1585             (dirent->name[1] == '.')) {
1586                 rds->parent = dirent->inode;
1587                 return 0;
1588         }
1589         rds->empty = 0;
1590         return 0;
1591 }
1592
1593 void do_rmdir(int argc, char *argv[])
1594 {
1595         int retval;
1596         ext2_ino_t inode_num;
1597         struct ext2_inode inode;
1598         struct rd_struct rds;
1599
1600         if (common_args_process(argc, argv, 2, 2, "rmdir",
1601                                 "<filename>", CHECK_FS_RW))
1602                 return;
1603
1604         retval = ext2fs_namei(current_fs, root, cwd, argv[1], &inode_num);
1605         if (retval) {
1606                 com_err(argv[0], retval, "while trying to resolve filename");
1607                 return;
1608         }
1609
1610         if (debugfs_read_inode(inode_num, &inode, argv[0]))
1611                 return;
1612
1613         if (!LINUX_S_ISDIR(inode.i_mode)) {
1614                 com_err(argv[0], 0, "file is not a directory");
1615                 return;
1616         }
1617
1618         rds.parent = 0;
1619         rds.empty = 1;
1620
1621         retval = ext2fs_dir_iterate2(current_fs, inode_num, 0,
1622                                     0, rmdir_proc, &rds);
1623         if (retval) {
1624                 com_err(argv[0], retval, "while iterating over directory");
1625                 return;
1626         }
1627         if (rds.empty == 0) {
1628                 com_err(argv[0], 0, "directory not empty");
1629                 return;
1630         }
1631
1632         inode.i_links_count = 0;
1633         if (debugfs_write_inode(inode_num, &inode, argv[0]))
1634                 return;
1635
1636         unlink_file_by_name(argv[1]);
1637         kill_file_by_inode(inode_num);
1638
1639         if (rds.parent) {
1640                 if (debugfs_read_inode(rds.parent, &inode, argv[0]))
1641                         return;
1642                 if (inode.i_links_count > 1)
1643                         inode.i_links_count--;
1644                 if (debugfs_write_inode(rds.parent, &inode, argv[0]))
1645                         return;
1646         }
1647 }
1648
1649 void do_show_debugfs_params(int argc EXT2FS_ATTR((unused)),
1650                             char *argv[] EXT2FS_ATTR((unused)))
1651 {
1652         FILE *out = stdout;
1653
1654         if (current_fs)
1655                 fprintf(out, "Open mode: read-%s\n",
1656                         current_fs->flags & EXT2_FLAG_RW ? "write" : "only");
1657         fprintf(out, "Filesystem in use: %s\n",
1658                 current_fs ? current_fs->device_name : "--none--");
1659 }
1660
1661 void do_expand_dir(int argc, char *argv[])
1662 {
1663         ext2_ino_t inode;
1664         int retval;
1665
1666         if (common_inode_args_process(argc, argv, &inode, CHECK_FS_RW))
1667                 return;
1668
1669         retval = ext2fs_expand_dir(current_fs, inode);
1670         if (retval)
1671                 com_err("ext2fs_expand_dir", retval, 0);
1672         return;
1673 }
1674
1675 void do_features(int argc, char *argv[])
1676 {
1677         int     i;
1678
1679         if (check_fs_open(argv[0]))
1680                 return;
1681
1682         if ((argc != 1) && check_fs_read_write(argv[0]))
1683                 return;
1684         for (i=1; i < argc; i++) {
1685                 if (e2p_edit_feature(argv[i],
1686                                      &current_fs->super->s_feature_compat, 0))
1687                         com_err(argv[0], 0, "Unknown feature: %s\n",
1688                                 argv[i]);
1689                 else
1690                         ext2fs_mark_super_dirty(current_fs);
1691         }
1692         print_features(current_fs->super, stdout);
1693 }
1694
1695 void do_bmap(int argc, char *argv[])
1696 {
1697         ext2_ino_t      ino;
1698         blk_t           blk, pblk;
1699         int             err;
1700         errcode_t       errcode;
1701
1702         if (common_args_process(argc, argv, 3, 3, argv[0],
1703                                 "<file> logical_blk", 0))
1704                 return;
1705
1706         ino = string_to_inode(argv[1]);
1707         if (!ino)
1708                 return;
1709         blk = parse_ulong(argv[2], argv[0], "logical_block", &err);
1710
1711         errcode = ext2fs_bmap(current_fs, ino, 0, 0, 0, blk, &pblk);
1712         if (errcode) {
1713                 com_err("argv[0]", errcode,
1714                         "while mapping logical block %u\n", blk);
1715                 return;
1716         }
1717         printf("%u\n", pblk);
1718 }
1719
1720 void do_imap(int argc, char *argv[])
1721 {
1722         ext2_ino_t      ino;
1723         unsigned long   group, block, block_nr, offset;
1724
1725         if (common_args_process(argc, argv, 2, 2, argv[0],
1726                                 "<file>", 0))
1727                 return;
1728         ino = string_to_inode(argv[1]);
1729         if (!ino)
1730                 return;
1731
1732         group = (ino - 1) / EXT2_INODES_PER_GROUP(current_fs->super);
1733         offset = ((ino - 1) % EXT2_INODES_PER_GROUP(current_fs->super)) *
1734                 EXT2_INODE_SIZE(current_fs->super);
1735         block = offset >> EXT2_BLOCK_SIZE_BITS(current_fs->super);
1736         if (!current_fs->group_desc[(unsigned)group].bg_inode_table) {
1737                 com_err(argv[0], 0, "Inode table for group %lu is missing\n",
1738                         group);
1739                 return;
1740         }
1741         block_nr = current_fs->group_desc[(unsigned)group].bg_inode_table +
1742                 block;
1743         offset &= (EXT2_BLOCK_SIZE(current_fs->super) - 1);
1744
1745         printf("Inode %d is part of block group %lu\n"
1746                "\tlocated at block %lu, offset 0x%04lx\n", ino, group,
1747                block_nr, offset);
1748
1749 }
1750
1751 void do_set_current_time(int argc, char *argv[])
1752 {
1753         time_t now;
1754
1755         if (common_args_process(argc, argv, 2, 2, argv[0],
1756                                 "<time>", 0))
1757                 return;
1758
1759         now = string_to_time(argv[1]);
1760         if (now == ((time_t) -1)) {
1761                 com_err(argv[0], 0, "Couldn't parse argument as a time: %s\n",
1762                         argv[1]);
1763                 return;
1764
1765         } else {
1766                 printf("Setting current time to %s\n", time_to_string(now));
1767                 current_fs->now = now;
1768         }
1769 }
1770
1771 static int source_file(const char *cmd_file, int sci_idx)
1772 {
1773         FILE            *f;
1774         char            buf[256];
1775         char            *cp;
1776         int             exit_status = 0;
1777         int             retval;
1778
1779         if (strcmp(cmd_file, "-") == 0)
1780                 f = stdin;
1781         else {
1782                 f = fopen(cmd_file, "r");
1783                 if (!f) {
1784                         perror(cmd_file);
1785                         exit(1);
1786                 }
1787         }
1788         setbuf(stdout, NULL);
1789         setbuf(stderr, NULL);
1790         while (!feof(f)) {
1791                 if (fgets(buf, sizeof(buf), f) == NULL)
1792                         break;
1793                 cp = strchr(buf, '\n');
1794                 if (cp)
1795                         *cp = 0;
1796                 cp = strchr(buf, '\r');
1797                 if (cp)
1798                         *cp = 0;
1799                 printf("debugfs: %s\n", buf);
1800                 retval = ss_execute_line(sci_idx, buf);
1801                 if (retval) {
1802                         ss_perror(sci_idx, retval, buf);
1803                         exit_status++;
1804                 }
1805         }
1806         return exit_status;
1807 }
1808
1809 int main(int argc, char **argv)
1810 {
1811         int             retval;
1812         int             sci_idx;
1813         const char      *usage = "Usage: debugfs [-b blocksize] [-s superblock] [-f cmd_file] [-R request] [-V] [[-w] [-c] device]";
1814         int             c;
1815         int             open_flags = EXT2_FLAG_SOFTSUPP_FEATURES;
1816         char            *request = 0;
1817         int             exit_status = 0;
1818         char            *cmd_file = 0;
1819         blk_t           superblock = 0;
1820         blk_t           blocksize = 0;
1821         int             catastrophic = 0;
1822         char            *data_filename = 0;
1823
1824         add_error_table(&et_ext2_error_table);
1825         fprintf (stderr, "debugfs %s (%s)\n", E2FSPROGS_VERSION,
1826                  E2FSPROGS_DATE);
1827
1828         while ((c = getopt (argc, argv, "iwcR:f:b:s:Vd:")) != EOF) {
1829                 switch (c) {
1830                 case 'R':
1831                         request = optarg;
1832                         break;
1833                 case 'f':
1834                         cmd_file = optarg;
1835                         break;
1836                 case 'd':
1837                         data_filename = optarg;
1838                         break;
1839                 case 'i':
1840                         open_flags |= EXT2_FLAG_IMAGE_FILE;
1841                         break;
1842                 case 'w':
1843                         open_flags |= EXT2_FLAG_RW;
1844                         break;
1845                 case 'b':
1846                         blocksize = parse_ulong(optarg, argv[0],
1847                                                 "block size", 0);
1848                         break;
1849                 case 's':
1850                         superblock = parse_ulong(optarg, argv[0],
1851                                                  "superblock number", 0);
1852                         break;
1853                 case 'c':
1854                         catastrophic = 1;
1855                         break;
1856                 case 'V':
1857                         /* Print version number and exit */
1858                         fprintf(stderr, "\tUsing %s\n",
1859                                 error_message(EXT2_ET_BASE));
1860                         exit(0);
1861                 default:
1862                         com_err(argv[0], 0, usage);
1863                         return 1;
1864                 }
1865         }
1866         if (optind < argc)
1867                 open_filesystem(argv[optind], open_flags,
1868                                 superblock, blocksize, catastrophic,
1869                                 data_filename);
1870
1871         sci_idx = ss_create_invocation("debugfs", "0.0", (char *) NULL,
1872                                        &debug_cmds, &retval);
1873         if (retval) {
1874                 ss_perror(sci_idx, retval, "creating invocation");
1875                 exit(1);
1876         }
1877         ss_get_readline(sci_idx);
1878
1879         (void) ss_add_request_table (sci_idx, &ss_std_requests, 1, &retval);
1880         if (retval) {
1881                 ss_perror(sci_idx, retval, "adding standard requests");
1882                 exit (1);
1883         }
1884         if (request) {
1885                 retval = 0;
1886                 retval = ss_execute_line(sci_idx, request);
1887                 if (retval) {
1888                         ss_perror(sci_idx, retval, request);
1889                         exit_status++;
1890                 }
1891         } else if (cmd_file) {
1892                 exit_status = source_file(cmd_file, sci_idx);
1893         } else {
1894                 ss_listen(sci_idx);
1895         }
1896
1897         if (current_fs)
1898                 close_filesystem();
1899
1900         remove_error_table(&et_ext2_error_table);
1901         return exit_status;
1902 }