print-tree.c

   1 /*
   2  * Copyright (C) 2007 Oracle.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License v2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public
  14  * License along with this program; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 021110-1307, USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <uuid/uuid.h>
  22 #include "kerncompat.h"
  23 #include "radix-tree.h"
  24 #include "ctree.h"
  25 #include "disk-io.h"
  26 #include "print-tree.h"
  27
  28
  29 static void print_dir_item_type(struct extent_buffer *eb,
  30                                 struct btrfs_dir_item *di)
  31 {
  32         u8 type = btrfs_dir_type(eb, di);
  33
  34         switch (type) {
  35         case BTRFS_FT_REG_FILE:
  36                 printf("FILE");
  37                 break;
  38         case BTRFS_FT_DIR:
  39                 printf("DIR");
  40                 break;
  41         case BTRFS_FT_CHRDEV:
  42                 printf("CHRDEV");
  43                 break;
  44         case BTRFS_FT_BLKDEV:
  45                 printf("BLKDEV");
  46                 break;
  47         case BTRFS_FT_FIFO:
  48                 printf("FIFO");
  49                 break;
  50         case BTRFS_FT_SOCK:
  51                 printf("SOCK");
  52                 break;
  53         case BTRFS_FT_SYMLINK:
  54                 printf("SYMLINK");
  55                 break;
  56         case BTRFS_FT_XATTR:
  57                 printf("XATTR");
  58                 break;
  59         default:
  60                 printf("%u", type);
  61         }
  62 }
  63
  64 static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item,
  65                           struct btrfs_dir_item *di)
  66 {
  67         u32 total;
  68         u32 cur = 0;
  69         u32 len;
  70         u32 name_len;
  71         u32 data_len;
  72         char namebuf[BTRFS_NAME_LEN];
  73         struct btrfs_disk_key location;
  74
  75         total = btrfs_item_size(eb, item);
  76         while(cur < total) {
  77                 btrfs_dir_item_key(eb, di, &location);
  78                 printf("\t\tlocation ");
  79                 btrfs_print_key(&location);
  80                 printf(" type ");
  81                 print_dir_item_type(eb, di);
  82                 printf("\n");
  83                 name_len = btrfs_dir_name_len(eb, di);
  84                 data_len = btrfs_dir_data_len(eb, di);
  85                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
  86                 read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
  87                 printf("\t\tnamelen %u datalen %u name: %.*s\n",
  88                        name_len, data_len, len, namebuf);
  89                 if (data_len) {
  90                         len = (data_len <= sizeof(namebuf))? data_len: sizeof(namebuf);
  91                         read_extent_buffer(eb, namebuf,
  92                                 (unsigned long)(di + 1) + name_len, len);
  93                         printf("\t\tdata %.*s\n", len, namebuf);
  94                 }
  95                 len = sizeof(*di) + name_len + data_len;
  96                 di = (struct btrfs_dir_item *)((char *)di + len);
  97                 cur += len;
  98         }
  99         return 0;
 100 }
 101
 102 static int print_inode_extref_item(struct extent_buffer *eb,
 103                                    struct btrfs_item *item,
 104                                    struct btrfs_inode_extref *extref)
 105 {
 106         u32 total;
 107         u32 cur = 0;
 108         u32 len;
 109         u32 name_len = 0;
 110         u64 index = 0;
 111         u64 parent_objid;
 112         char namebuf[BTRFS_NAME_LEN];
 113
 114         total = btrfs_item_size(eb, item);
 115
 116         while (cur < total) {
 117                 index = btrfs_inode_extref_index(eb, extref);
 118                 name_len = btrfs_inode_extref_name_len(eb, extref);
 119                 parent_objid = btrfs_inode_extref_parent(eb, extref);
 120
 121                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 122
 123                 read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len);
 124
 125                 printf("\t\tinode extref index %llu parent %llu namelen %u "
 126                        "name: %.*s\n",
 127                        (unsigned long long)index,
 128                        (unsigned long long)parent_objid,
 129                        name_len, len, namebuf);
 130
 131                 len = sizeof(*extref) + name_len;
 132                 extref = (struct btrfs_inode_extref *)((char *)extref + len);
 133                 cur += len;
 134         }
 135         return 0;
 136 }
 137
 138 static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
 139                                 struct btrfs_inode_ref *ref)
 140 {
 141         u32 total;
 142         u32 cur = 0;
 143         u32 len;
 144         u32 name_len;
 145         u64 index;
 146         char namebuf[BTRFS_NAME_LEN];
 147         total = btrfs_item_size(eb, item);
 148         while(cur < total) {
 149                 name_len = btrfs_inode_ref_name_len(eb, ref);
 150                 index = btrfs_inode_ref_index(eb, ref);
 151                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 152                 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
 153                 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
 154                        (unsigned long long)index, name_len, len, namebuf);
 155                 len = sizeof(*ref) + name_len;
 156                 ref = (struct btrfs_inode_ref *)((char *)ref + len);
 157                 cur += len;
 158         }
 159         return 0;
 160 }
 161
 162 static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
 163 {
 164         int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
 165         int i;
 166         printf("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
 167                (unsigned long long)btrfs_chunk_length(eb, chunk),
 168                (unsigned long long)btrfs_chunk_owner(eb, chunk),
 169                (unsigned long long)btrfs_chunk_type(eb, chunk),
 170                num_stripes);
 171         for (i = 0 ; i < num_stripes ; i++) {
 172                 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
 173                       (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
 174                       (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
 175         }
 176 }
 177
 178 static void print_dev_item(struct extent_buffer *eb,
 179                            struct btrfs_dev_item *dev_item)
 180 {
 181         printf("\t\tdev item devid %llu "
 182                "total_bytes %llu bytes used %Lu\n",
 183                (unsigned long long)btrfs_device_id(eb, dev_item),
 184                (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
 185                (unsigned long long)btrfs_device_bytes_used(eb, dev_item));
 186 }
 187
 188 static void print_uuids(struct extent_buffer *eb)
 189 {
 190         char fs_uuid[37];
 191         char chunk_uuid[37];
 192         u8 disk_uuid[BTRFS_UUID_SIZE];
 193
 194         read_extent_buffer(eb, disk_uuid, (unsigned long)btrfs_header_fsid(eb),
 195                            BTRFS_FSID_SIZE);
 196
 197         fs_uuid[36] = '\0';
 198         uuid_unparse(disk_uuid, fs_uuid);
 199
 200         read_extent_buffer(eb, disk_uuid,
 201                            (unsigned long)btrfs_header_chunk_tree_uuid(eb),
 202                            BTRFS_UUID_SIZE);
 203
 204         chunk_uuid[36] = '\0';
 205         uuid_unparse(disk_uuid, chunk_uuid);
 206         printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
 207 }
 208
 209 static void print_file_extent_item(struct extent_buffer *eb,
 210                                    struct btrfs_item *item,
 211                                    struct btrfs_file_extent_item *fi)
 212 {
 213         int extent_type = btrfs_file_extent_type(eb, fi);
 214
 215         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 216                 printf("\t\tinline extent data size %u "
 217                        "ram %u compress %d\n",
 218                   btrfs_file_extent_inline_item_len(eb, item),
 219                   btrfs_file_extent_inline_len(eb, fi),
 220                   btrfs_file_extent_compression(eb, fi));
 221                 return;
 222         }
 223         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 224                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 225                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 226                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 227                 printf("\t\tprealloc data offset %llu nr %llu\n",
 228                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 229                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 230                 return;
 231         }
 232         printf("\t\textent data disk byte %llu nr %llu\n",
 233                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 234                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 235         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 236                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 237                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 238                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 239         printf("\t\textent compression %d\n",
 240                btrfs_file_extent_compression(eb, fi));
 241 }
 242
 243 static void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 244 {
 245         struct btrfs_extent_item *ei;
 246         struct btrfs_extent_inline_ref *iref;
 247         struct btrfs_extent_data_ref *dref;
 248         struct btrfs_shared_data_ref *sref;
 249         struct btrfs_disk_key key;
 250         unsigned long end;
 251         unsigned long ptr;
 252         int type;
 253         u32 item_size = btrfs_item_size_nr(eb, slot);
 254         u64 flags;
 255         u64 offset;
 256
 257         if (item_size < sizeof(*ei)) {
 258 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 259                 struct btrfs_extent_item_v0 *ei0;
 260                 BUG_ON(item_size != sizeof(*ei0));
 261                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 262                 printf("\t\textent refs %u\n",
 263                        btrfs_extent_refs_v0(eb, ei0));
 264                 return;
 265 #else
 266                 BUG();
 267 #endif
 268         }
 269
 270         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 271         flags = btrfs_extent_flags(eb, ei);
 272
 273         printf("\t\textent refs %llu gen %llu flags %llu\n",
 274                (unsigned long long)btrfs_extent_refs(eb, ei),
 275                (unsigned long long)btrfs_extent_generation(eb, ei),
 276                (unsigned long long)flags);
 277
 278         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 279                 struct btrfs_tree_block_info *info;
 280                 info = (struct btrfs_tree_block_info *)(ei + 1);
 281                 btrfs_tree_block_key(eb, info, &key);
 282                 printf("\t\ttree block ");
 283                 btrfs_print_key(&key);
 284                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 285                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 286         } else if (metadata) {
 287                 struct btrfs_key tmp;
 288
 289                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 290                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 291                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 292         } else{
 293                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 294         }
 295
 296         ptr = (unsigned long)iref;
 297         end = (unsigned long)ei + item_size;
 298         while (ptr < end) {
 299                 iref = (struct btrfs_extent_inline_ref *)ptr;
 300                 type = btrfs_extent_inline_ref_type(eb, iref);
 301                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 302                 switch (type) {
 303                 case BTRFS_TREE_BLOCK_REF_KEY:
 304                         printf("\t\ttree block backref root %llu\n",
 305                                (unsigned long long)offset);
 306                         break;
 307                 case BTRFS_SHARED_BLOCK_REF_KEY:
 308                         printf("\t\tshared block backref parent %llu\n",
 309                                (unsigned long long)offset);
 310                         break;
 311                 case BTRFS_EXTENT_DATA_REF_KEY:
 312                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 313                         printf("\t\textent data backref root %llu "
 314                                "objectid %llu offset %llu count %u\n",
 315                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 316                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 317                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 318                                btrfs_extent_data_ref_count(eb, dref));
 319                         break;
 320                 case BTRFS_SHARED_DATA_REF_KEY:
 321                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 322                         printf("\t\tshared data backref parent %llu count %u\n",
 323                                (unsigned long long)offset,
 324                                btrfs_shared_data_ref_count(eb, sref));
 325                         break;
 326                 default:
 327                         return;
 328                 }
 329                 ptr += btrfs_extent_inline_ref_size(type);
 330         }
 331         WARN_ON(ptr > end);
 332 }
 333
 334 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 335 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 336 {
 337         struct btrfs_extent_ref_v0 *ref0;
 338
 339         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 340         printf("\t\textent back ref root %llu gen %llu "
 341                 "owner %llu num_refs %lu\n",
 342                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 343                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 344                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 345                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 346 }
 347 #endif
 348
 349 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 350 {
 351         struct btrfs_root_ref *ref;
 352         char namebuf[BTRFS_NAME_LEN];
 353         int namelen;
 354
 355         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 356         namelen = btrfs_root_ref_name_len(leaf, ref);
 357         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 358         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 359                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 360                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 361                namelen, namebuf);
 362 }
 363
 364 static int count_bytes(void *buf, int len, char b)
 365 {
 366         int cnt = 0;
 367         int i;
 368         for (i = 0; i < len; i++) {
 369                 if (((char*)buf)[i] == b)
 370                         cnt++;
 371         }
 372         return cnt;
 373 }
 374
 375 static void print_root(struct extent_buffer *leaf, int slot)
 376 {
 377         struct btrfs_root_item *ri;
 378         struct btrfs_root_item root_item;
 379         int len;
 380         char uuid_str[128];
 381
 382         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 383         len = btrfs_item_size_nr(leaf, slot);
 384
 385         memset(&root_item, 0, sizeof(root_item));
 386         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 387
 388         printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu\n",
 389                 (unsigned long long)btrfs_root_bytenr(&root_item),
 390                 btrfs_root_level(&root_item),
 391                 (unsigned long long)btrfs_root_dirid(&root_item),
 392                 btrfs_root_refs(&root_item),
 393                 (unsigned long long)btrfs_root_generation(&root_item));
 394
 395         if (root_item.generation == root_item.generation_v2) {
 396                 uuid_unparse(root_item.uuid, uuid_str);
 397                 printf("\t\tuuid %s\n", uuid_str);
 398                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 399                         uuid_unparse(root_item.parent_uuid, uuid_str);
 400                         printf("\t\tparent_uuid %s\n", uuid_str);
 401                 }
 402                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 403                         uuid_unparse(root_item.received_uuid, uuid_str);
 404                         printf("\t\treceived_uuid %s\n", uuid_str);
 405                 }
 406                 if (root_item.ctransid) {
 407                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 408                                 btrfs_root_ctransid(&root_item),
 409                                 btrfs_root_otransid(&root_item),
 410                                 btrfs_root_stransid(&root_item),
 411                                 btrfs_root_rtransid(&root_item));
 412                 }
 413         }
 414         if (btrfs_root_refs(&root_item) == 0) {
 415                 struct btrfs_key drop_key;
 416                 btrfs_disk_key_to_cpu(&drop_key,
 417                                       &root_item.drop_progress);
 418                 printf("\t\tdrop ");
 419                 btrfs_print_key(&root_item.drop_progress);
 420                 printf(" level %d\n", root_item.drop_level);
 421         }
 422 }
 423
 424 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 425 {
 426         struct btrfs_free_space_header *header;
 427         struct btrfs_disk_key location;
 428
 429         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 430         btrfs_free_space_key(leaf, header, &location);
 431         printf("\t\tlocation ");
 432         btrfs_print_key(&location);
 433         printf("\n");
 434         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 435                (unsigned long long)btrfs_free_space_generation(leaf, header),
 436                (unsigned long long)btrfs_free_space_entries(leaf, header),
 437                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 438 }
 439
 440 static void print_key_type(u64 objectid, u8 type)
 441 {
 442         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 443                 printf("UNTYPED");
 444                 return;
 445         }
 446
 447         switch (type) {
 448         case BTRFS_INODE_ITEM_KEY:
 449                 printf("INODE_ITEM");
 450                 break;
 451         case BTRFS_INODE_REF_KEY:
 452                 printf("INODE_REF");
 453                 break;
 454         case BTRFS_INODE_EXTREF_KEY:
 455                 printf("INODE_EXTREF");
 456                 break;
 457         case BTRFS_DIR_ITEM_KEY:
 458                 printf("DIR_ITEM");
 459                 break;
 460         case BTRFS_DIR_INDEX_KEY:
 461                 printf("DIR_INDEX");
 462                 break;
 463         case BTRFS_DIR_LOG_ITEM_KEY:
 464                 printf("DIR_LOG_ITEM");
 465                 break;
 466         case BTRFS_DIR_LOG_INDEX_KEY:
 467                 printf("DIR_LOG_INDEX");
 468                 break;
 469         case BTRFS_XATTR_ITEM_KEY:
 470                 printf("XATTR_ITEM");
 471                 break;
 472         case BTRFS_ORPHAN_ITEM_KEY:
 473                 printf("ORPHAN_ITEM");
 474                 break;
 475         case BTRFS_ROOT_ITEM_KEY:
 476                 printf("ROOT_ITEM");
 477                 break;
 478         case BTRFS_ROOT_REF_KEY:
 479                 printf("ROOT_REF");
 480                 break;
 481         case BTRFS_ROOT_BACKREF_KEY:
 482                 printf("ROOT_BACKREF");
 483                 break;
 484         case BTRFS_EXTENT_ITEM_KEY:
 485                 printf("EXTENT_ITEM");
 486                 break;
 487         case BTRFS_METADATA_ITEM_KEY:
 488                 printf("METADATA_ITEM");
 489                 break;
 490         case BTRFS_TREE_BLOCK_REF_KEY:
 491                 printf("TREE_BLOCK_REF");
 492                 break;
 493         case BTRFS_SHARED_BLOCK_REF_KEY:
 494                 printf("SHARED_BLOCK_REF");
 495                 break;
 496         case BTRFS_EXTENT_DATA_REF_KEY:
 497                 printf("EXTENT_DATA_REF");
 498                 break;
 499         case BTRFS_SHARED_DATA_REF_KEY:
 500                 printf("SHARED_DATA_REF");
 501                 break;
 502         case BTRFS_EXTENT_REF_V0_KEY:
 503                 printf("EXTENT_REF_V0");
 504                 break;
 505         case BTRFS_CSUM_ITEM_KEY:
 506                 printf("CSUM_ITEM");
 507                 break;
 508         case BTRFS_EXTENT_CSUM_KEY:
 509                 printf("EXTENT_CSUM");
 510                 break;
 511         case BTRFS_EXTENT_DATA_KEY:
 512                 printf("EXTENT_DATA");
 513                 break;
 514         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 515                 printf("BLOCK_GROUP_ITEM");
 516                 break;
 517         case BTRFS_CHUNK_ITEM_KEY:
 518                 printf("CHUNK_ITEM");
 519                 break;
 520         case BTRFS_DEV_ITEM_KEY:
 521                 printf("DEV_ITEM");
 522                 break;
 523         case BTRFS_DEV_EXTENT_KEY:
 524                 printf("DEV_EXTENT");
 525                 break;
 526         case BTRFS_BALANCE_ITEM_KEY:
 527                 printf("BALANCE_ITEM");
 528                 break;
 529         case BTRFS_DEV_REPLACE_KEY:
 530                 printf("DEV_REPLACE_ITEM");
 531                 break;
 532         case BTRFS_STRING_ITEM_KEY:
 533                 printf("STRING_ITEM");
 534                 break;
 535         case BTRFS_QGROUP_STATUS_KEY:
 536                 printf("BTRFS_STATUS_KEY");
 537                 break;
 538         case BTRFS_QGROUP_RELATION_KEY:
 539                 printf("BTRFS_QGROUP_RELATION_KEY");
 540                 break;
 541         case BTRFS_QGROUP_INFO_KEY:
 542                 printf("BTRFS_QGROUP_INFO_KEY");
 543                 break;
 544         case BTRFS_QGROUP_LIMIT_KEY:
 545                 printf("BTRFS_QGROUP_LIMIT_KEY");
 546                 break;
 547         case BTRFS_DEV_STATS_KEY:
 548                 printf("DEV_STATS_ITEM");
 549                 break;
 550         case BTRFS_UUID_KEY_SUBVOL:
 551                 printf("BTRFS_UUID_KEY_SUBVOL");
 552                 break;
 553         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 554                 printf("BTRFS_UUID_KEY_RECEIVED_SUBVOL");
 555                 break;
 556         default:
 557                 printf("UNKNOWN.%d", type);
 558         };
 559 }
 560
 561 static void print_objectid(u64 objectid, u8 type)
 562 {
 563         switch (type) {
 564         case BTRFS_DEV_EXTENT_KEY:
 565                 printf("%llu", (unsigned long long)objectid); /* device id */
 566                 return;
 567         case BTRFS_QGROUP_RELATION_KEY:
 568                 printf("%llu/%llu", objectid >> 48,
 569                         objectid & ((1ll << 48) - 1));
 570                 return;
 571         case BTRFS_UUID_KEY_SUBVOL:
 572         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 573                 printf("0x%016llx", (unsigned long long)objectid);
 574                 return;
 575         }
 576
 577         switch (objectid) {
 578         case BTRFS_ROOT_TREE_OBJECTID:
 579                 if (type == BTRFS_DEV_ITEM_KEY)
 580                         printf("DEV_ITEMS");
 581                 else
 582                         printf("ROOT_TREE");
 583                 break;
 584         case BTRFS_EXTENT_TREE_OBJECTID:
 585                 printf("EXTENT_TREE");
 586                 break;
 587         case BTRFS_CHUNK_TREE_OBJECTID:
 588                 printf("CHUNK_TREE");
 589                 break;
 590         case BTRFS_DEV_TREE_OBJECTID:
 591                 printf("DEV_TREE");
 592                 break;
 593         case BTRFS_FS_TREE_OBJECTID:
 594                 printf("FS_TREE");
 595                 break;
 596         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 597                 printf("ROOT_TREE_DIR");
 598                 break;
 599         case BTRFS_CSUM_TREE_OBJECTID:
 600                 printf("CSUM_TREE");
 601                 break;
 602         case BTRFS_BALANCE_OBJECTID:
 603                 printf("BALANCE");
 604                 break;
 605         case BTRFS_ORPHAN_OBJECTID:
 606                 printf("ORPHAN");
 607                 break;
 608         case BTRFS_TREE_LOG_OBJECTID:
 609                 printf("TREE_LOG");
 610                 break;
 611         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 612                 printf("LOG_FIXUP");
 613                 break;
 614         case BTRFS_TREE_RELOC_OBJECTID:
 615                 printf("TREE_RELOC");
 616                 break;
 617         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 618                 printf("DATA_RELOC_TREE");
 619                 break;
 620         case BTRFS_EXTENT_CSUM_OBJECTID:
 621                 printf("EXTENT_CSUM");
 622                 break;
 623         case BTRFS_FREE_SPACE_OBJECTID:
 624                 printf("FREE_SPACE");
 625                 break;
 626         case BTRFS_FREE_INO_OBJECTID:
 627                 printf("FREE_INO");
 628                 break;
 629         case BTRFS_QUOTA_TREE_OBJECTID:
 630                 printf("QUOTA_TREE");
 631                 break;
 632         case BTRFS_UUID_TREE_OBJECTID:
 633                 printf("UUID_TREE");
 634                 break;
 635         case BTRFS_MULTIPLE_OBJECTIDS:
 636                 printf("MULTIPLE");
 637                 break;
 638         case (u64)-1:
 639                 printf("-1");
 640                 break;
 641         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 642                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 643                         printf("FIRST_CHUNK_TREE");
 644                         break;
 645                 }
 646                 /* fall-thru */
 647         default:
 648                 printf("%llu", (unsigned long long)objectid);
 649         }
 650 }
 651
 652 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 653 {
 654         u64 objectid = btrfs_disk_key_objectid(disk_key);
 655         u8 type = btrfs_disk_key_type(disk_key);
 656         u64 offset = btrfs_disk_key_offset(disk_key);
 657
 658         printf("key (");
 659         print_objectid(objectid, type);
 660         printf(" ");
 661         print_key_type(objectid, type);
 662         switch (type) {
 663         case BTRFS_QGROUP_RELATION_KEY:
 664         case BTRFS_QGROUP_INFO_KEY:
 665         case BTRFS_QGROUP_LIMIT_KEY:
 666                 printf(" %llu/%llu)", (unsigned long long)(offset >> 48),
 667                         (unsigned long long)(offset & ((1ll << 48) - 1)));
 668                 break;
 669         case BTRFS_UUID_KEY_SUBVOL:
 670         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 671                 printf(" 0x%016llx)", (unsigned long long)offset);
 672                 break;
 673         default:
 674                 if (offset == (u64)-1)
 675                         printf(" -1)");
 676                 else
 677                         printf(" %llu)", (unsigned long long)offset);
 678                 break;
 679         }
 680 }
 681
 682 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 683                             u32 item_size)
 684 {
 685         if (item_size & (sizeof(u64) - 1)) {
 686                 printf("btrfs: uuid item with illegal size %lu!\n",
 687                        (unsigned long)item_size);
 688                 return;
 689         }
 690         while (item_size) {
 691                 __le64 subvol_id;
 692
 693                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 694                 printf("\t\tsubvol_id %llu\n",
 695                         (unsigned long long)le64_to_cpu(subvol_id));
 696                 item_size -= sizeof(u64);
 697                 offset += sizeof(u64);
 698         }
 699 }
 700
 701 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 702 {
 703         int i;
 704         char *str;
 705         struct btrfs_item *item;
 706         struct btrfs_dir_item *di;
 707         struct btrfs_inode_item *ii;
 708         struct btrfs_file_extent_item *fi;
 709         struct btrfs_block_group_item *bi;
 710         struct btrfs_extent_data_ref *dref;
 711         struct btrfs_shared_data_ref *sref;
 712         struct btrfs_inode_ref *iref;
 713         struct btrfs_inode_extref *iref2;
 714         struct btrfs_dev_extent *dev_extent;
 715         struct btrfs_disk_key disk_key;
 716         struct btrfs_block_group_item bg_item;
 717         struct btrfs_dir_log_item *dlog;
 718         struct btrfs_qgroup_info_item *qg_info;
 719         struct btrfs_qgroup_limit_item *qg_limit;
 720         struct btrfs_qgroup_status_item *qg_status;
 721         u32 nr = btrfs_header_nritems(l);
 722         u64 objectid;
 723         u32 type;
 724
 725         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 726                 (unsigned long long)btrfs_header_bytenr(l), nr,
 727                 btrfs_leaf_free_space(root, l),
 728                 (unsigned long long)btrfs_header_generation(l),
 729                 (unsigned long long)btrfs_header_owner(l));
 730         print_uuids(l);
 731         fflush(stdout);
 732         for (i = 0 ; i < nr ; i++) {
 733                 item = btrfs_item_nr(l, i);
 734                 btrfs_item_key(l, &disk_key, i);
 735                 objectid = btrfs_disk_key_objectid(&disk_key);
 736                 type = btrfs_disk_key_type(&disk_key);
 737                 printf("\titem %d ", i);
 738                 btrfs_print_key(&disk_key);
 739                 printf(" itemoff %d itemsize %d\n",
 740                         btrfs_item_offset(l, item),
 741                         btrfs_item_size(l, item));
 742
 743                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
 744                         print_free_space_header(l, i);
 745
 746                 switch (type) {
 747                 case BTRFS_INODE_ITEM_KEY:
 748                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
 749                         printf("\t\tinode generation %llu transid %llu size %llu block group %llu mode %o links %u\n",
 750                                (unsigned long long)btrfs_inode_generation(l, ii),
 751                                (unsigned long long)btrfs_inode_transid(l, ii),
 752                                (unsigned long long)btrfs_inode_size(l, ii),
 753                                (unsigned long long)btrfs_inode_block_group(l,ii),
 754                                btrfs_inode_mode(l, ii),
 755                                btrfs_inode_nlink(l, ii));
 756                         break;
 757                 case BTRFS_INODE_REF_KEY:
 758                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
 759                         print_inode_ref_item(l, item, iref);
 760                         break;
 761                 case BTRFS_INODE_EXTREF_KEY:
 762                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
 763                         print_inode_extref_item(l, item, iref2);
 764                         break;
 765                 case BTRFS_DIR_ITEM_KEY:
 766                 case BTRFS_DIR_INDEX_KEY:
 767                 case BTRFS_XATTR_ITEM_KEY:
 768                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
 769                         print_dir_item(l, item, di);
 770                         break;
 771                 case BTRFS_DIR_LOG_INDEX_KEY:
 772                 case BTRFS_DIR_LOG_ITEM_KEY:
 773                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
 774                         printf("\t\tdir log end %Lu\n",
 775                                (unsigned long long)btrfs_dir_log_end(l, dlog));
 776                        break;
 777                 case BTRFS_ORPHAN_ITEM_KEY:
 778                         printf("\t\torphan item\n");
 779                         break;
 780                 case BTRFS_ROOT_ITEM_KEY:
 781                         print_root(l, i);
 782                         break;
 783                 case BTRFS_ROOT_REF_KEY:
 784                         print_root_ref(l, i, "ref");
 785                         break;
 786                 case BTRFS_ROOT_BACKREF_KEY:
 787                         print_root_ref(l, i, "backref");
 788                         break;
 789                 case BTRFS_EXTENT_ITEM_KEY:
 790                         print_extent_item(l, i, 0);
 791                         break;
 792                 case BTRFS_METADATA_ITEM_KEY:
 793                         print_extent_item(l, i, 1);
 794                         break;
 795                 case BTRFS_TREE_BLOCK_REF_KEY:
 796                         printf("\t\ttree block backref\n");
 797                         break;
 798                 case BTRFS_SHARED_BLOCK_REF_KEY:
 799                         printf("\t\tshared block backref\n");
 800                         break;
 801                 case BTRFS_EXTENT_DATA_REF_KEY:
 802                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
 803                         printf("\t\textent data backref root %llu "
 804                                "objectid %llu offset %llu count %u\n",
 805                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
 806                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
 807                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
 808                                btrfs_extent_data_ref_count(l, dref));
 809                         break;
 810                 case BTRFS_SHARED_DATA_REF_KEY:
 811                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
 812                         printf("\t\tshared data backref count %u\n",
 813                                btrfs_shared_data_ref_count(l, sref));
 814                         break;
 815                 case BTRFS_EXTENT_REF_V0_KEY:
 816 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 817                         print_extent_ref_v0(l, i);
 818 #else
 819                         BUG();
 820 #endif
 821                         break;
 822                 case BTRFS_CSUM_ITEM_KEY:
 823                         printf("\t\tcsum item\n");
 824                         break;
 825                 case BTRFS_EXTENT_CSUM_KEY:
 826                         printf("\t\textent csum item\n");
 827                         break;
 828                 case BTRFS_EXTENT_DATA_KEY:
 829                         fi = btrfs_item_ptr(l, i,
 830                                             struct btrfs_file_extent_item);
 831                         print_file_extent_item(l, item, fi);
 832                         break;
 833                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
 834                         bi = btrfs_item_ptr(l, i,
 835                                             struct btrfs_block_group_item);
 836                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
 837                                            sizeof(bg_item));
 838                         printf("\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
 839                                (unsigned long long)btrfs_block_group_used(&bg_item),
 840                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
 841                                (unsigned long long)btrfs_block_group_flags(&bg_item));
 842                         break;
 843                 case BTRFS_CHUNK_ITEM_KEY:
 844                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
 845                         break;
 846                 case BTRFS_DEV_ITEM_KEY:
 847                         print_dev_item(l, btrfs_item_ptr(l, i,
 848                                         struct btrfs_dev_item));
 849                         break;
 850                 case BTRFS_DEV_EXTENT_KEY:
 851                         dev_extent = btrfs_item_ptr(l, i,
 852                                                     struct btrfs_dev_extent);
 853                         printf("\t\tdev extent chunk_tree %llu\n"
 854                                "\t\tchunk objectid %llu chunk offset %llu "
 855                                "length %llu\n",
 856                                (unsigned long long)
 857                                btrfs_dev_extent_chunk_tree(l, dev_extent),
 858                                (unsigned long long)
 859                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
 860                                (unsigned long long)
 861                                btrfs_dev_extent_chunk_offset(l, dev_extent),
 862                                (unsigned long long)
 863                                btrfs_dev_extent_length(l, dev_extent));
 864                         break;
 865                 case BTRFS_QGROUP_STATUS_KEY:
 866                         qg_status = btrfs_item_ptr(l, i,
 867                                         struct btrfs_qgroup_status_item);
 868                         printf("\t\tversion %llu generation %llu flags %#llx "
 869                                 "scan %lld\n",
 870                                 (unsigned long long)
 871                                 btrfs_qgroup_status_version(l, qg_status),
 872                                 (unsigned long long)
 873                                 btrfs_qgroup_status_generation(l, qg_status),
 874                                 (unsigned long long)
 875                                 btrfs_qgroup_status_flags(l, qg_status),
 876                                 (unsigned long long)
 877                                 btrfs_qgroup_status_scan(l, qg_status));
 878                         break;
 879                 case BTRFS_QGROUP_RELATION_KEY:
 880                         break;
 881                 case BTRFS_QGROUP_INFO_KEY:
 882                         qg_info = btrfs_item_ptr(l, i,
 883                                                  struct btrfs_qgroup_info_item);
 884                         printf("\t\tgeneration %llu\n"
 885                              "\t\treferenced %lld referenced compressed %lld\n"
 886                              "\t\texclusive %lld exclusive compressed %lld\n",
 887                                (unsigned long long)
 888                                btrfs_qgroup_info_generation(l, qg_info),
 889                                (long long)
 890                                btrfs_qgroup_info_referenced(l, qg_info),
 891                                (long long)
 892                                btrfs_qgroup_info_referenced_compressed(l,
 893                                                                        qg_info),
 894                                (long long)
 895                                btrfs_qgroup_info_exclusive(l, qg_info),
 896                                (long long)
 897                                btrfs_qgroup_info_exclusive_compressed(l,
 898                                                                       qg_info));
 899                         break;
 900                 case BTRFS_QGROUP_LIMIT_KEY:
 901                         qg_limit = btrfs_item_ptr(l, i,
 902                                          struct btrfs_qgroup_limit_item);
 903                         printf("\t\tflags %llx\n"
 904                              "\t\tmax referenced %lld max exclusive %lld\n"
 905                              "\t\trsv referenced %lld rsv exclusive %lld\n",
 906                                (unsigned long long)
 907                                btrfs_qgroup_limit_flags(l, qg_limit),
 908                                (long long)
 909                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
 910                                (long long)
 911                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
 912                                (long long)
 913                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
 914                                (long long)
 915                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
 916                         break;
 917                 case BTRFS_UUID_KEY_SUBVOL:
 918                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 919                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
 920                                         btrfs_item_size_nr(l, i));
 921                         break;
 922                 case BTRFS_STRING_ITEM_KEY:
 923                         /* dirty, but it's simple */
 924                         str = l->data + btrfs_item_ptr_offset(l, i);
 925                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
 926                         break;
 927                 case BTRFS_DEV_STATS_KEY:
 928                         printf("\t\tdevice stats\n");
 929                         break;
 930                 };
 931                 fflush(stdout);
 932         }
 933 }
 934
 935 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
 936 {
 937         int i;
 938         u32 nr;
 939         u32 size;
 940         struct btrfs_disk_key disk_key;
 941         struct btrfs_key key;
 942
 943         if (!eb)
 944                 return;
 945         nr = btrfs_header_nritems(eb);
 946         if (btrfs_is_leaf(eb)) {
 947                 btrfs_print_leaf(root, eb);
 948                 return;
 949         }
 950         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
 951                (unsigned long long)eb->start,
 952                 btrfs_header_level(eb), nr,
 953                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
 954                 (unsigned long long)btrfs_header_generation(eb),
 955                 (unsigned long long)btrfs_header_owner(eb));
 956         print_uuids(eb);
 957         fflush(stdout);
 958         size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
 959         for (i = 0; i < nr; i++) {
 960                 u64 blocknr = btrfs_node_blockptr(eb, i);
 961                 btrfs_node_key(eb, &disk_key, i);
 962                 btrfs_disk_key_to_cpu(&key, &disk_key);
 963                 printf("\t");
 964                 btrfs_print_key(&disk_key);
 965                 printf(" block %llu (%llu) gen %llu\n",
 966                        (unsigned long long)blocknr,
 967                        (unsigned long long)blocknr / size,
 968                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
 969                 fflush(stdout);
 970         }
 971         if (!follow)
 972                 return;
 973
 974         for (i = 0; i < nr; i++) {
 975                 struct extent_buffer *next = read_tree_block(root,
 976                                              btrfs_node_blockptr(eb, i),
 977                                              size,
 978                                              btrfs_node_ptr_generation(eb, i));
 979                 if (!next) {
 980                         fprintf(stderr, "failed to read %llu in tree %llu\n",
 981                                 (unsigned long long)btrfs_node_blockptr(eb, i),
 982                                 (unsigned long long)btrfs_header_owner(eb));
 983                         continue;
 984                 }
 985                 if (btrfs_is_leaf(next) &&
 986                     btrfs_header_level(eb) != 1)
 987                         BUG();
 988                 if (btrfs_header_level(next) !=
 989                         btrfs_header_level(eb) - 1)
 990                         BUG();
 991                 btrfs_print_tree(root, next, 1);
 992                 free_extent_buffer(next);
 993         }
 994 }