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 static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item,
  29                           struct btrfs_dir_item *di)
  30 {
  31         u32 total;
  32         u32 cur = 0;
  33         u32 len;
  34         u32 name_len;
  35         u32 data_len;
  36         char namebuf[BTRFS_NAME_LEN];
  37         struct btrfs_disk_key location;
  38
  39         total = btrfs_item_size(eb, item);
  40         while(cur < total) {
  41                 btrfs_dir_item_key(eb, di, &location);
  42                 printf("\t\tlocation ");
  43                 btrfs_print_key(&location);
  44                 printf(" type %u\n", btrfs_dir_type(eb, di));
  45                 name_len = btrfs_dir_name_len(eb, di);
  46                 data_len = btrfs_dir_data_len(eb, di);
  47                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
  48                 read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
  49                 printf("\t\tnamelen %u datalen %u name: %.*s\n",
  50                        name_len, data_len, len, namebuf);
  51                 if (data_len) {
  52                         len = (data_len <= sizeof(namebuf))? data_len: sizeof(namebuf);
  53                         read_extent_buffer(eb, namebuf,
  54                                 (unsigned long)(di + 1) + name_len, len);
  55                         printf("\t\tdata %.*s\n", len, namebuf);
  56                 }
  57                 len = sizeof(*di) + name_len + data_len;
  58                 di = (struct btrfs_dir_item *)((char *)di + len);
  59                 cur += len;
  60         }
  61         return 0;
  62 }
  63
  64 static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
  65                                 struct btrfs_inode_ref *ref)
  66 {
  67         u32 total;
  68         u32 cur = 0;
  69         u32 len;
  70         u32 name_len;
  71         u64 index;
  72         char namebuf[BTRFS_NAME_LEN];
  73         total = btrfs_item_size(eb, item);
  74         while(cur < total) {
  75                 name_len = btrfs_inode_ref_name_len(eb, ref);
  76                 index = btrfs_inode_ref_index(eb, ref);
  77                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
  78                 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
  79                 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
  80                        (unsigned long long)index, name_len, len, namebuf);
  81                 len = sizeof(*ref) + name_len;
  82                 ref = (struct btrfs_inode_ref *)((char *)ref + len);
  83                 cur += len;
  84         }
  85         return 0;
  86 }
  87
  88 static void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
  89 {
  90         int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
  91         int i;
  92         printf("\t\tchunk length %llu owner %llu type %llu num_stripes %d\n",
  93                (unsigned long long)btrfs_chunk_length(eb, chunk),
  94                (unsigned long long)btrfs_chunk_owner(eb, chunk),
  95                (unsigned long long)btrfs_chunk_type(eb, chunk),
  96                num_stripes);
  97         for (i = 0 ; i < num_stripes ; i++) {
  98                 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
  99                       (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
 100                       (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
 101         }
 102 }
 103
 104 static void print_dev_item(struct extent_buffer *eb,
 105                            struct btrfs_dev_item *dev_item)
 106 {
 107         printf("\t\tdev item devid %llu "
 108                "total_bytes %llu bytes used %Lu\n",
 109                (unsigned long long)btrfs_device_id(eb, dev_item),
 110                (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
 111                (unsigned long long)btrfs_device_bytes_used(eb, dev_item));
 112 }
 113
 114 static void print_uuids(struct extent_buffer *eb)
 115 {
 116         char fs_uuid[37];
 117         char chunk_uuid[37];
 118         u8 disk_uuid[BTRFS_UUID_SIZE];
 119
 120         read_extent_buffer(eb, disk_uuid, (unsigned long)btrfs_header_fsid(eb),
 121                            BTRFS_FSID_SIZE);
 122
 123         fs_uuid[36] = '\0';
 124         uuid_unparse(disk_uuid, fs_uuid);
 125
 126         read_extent_buffer(eb, disk_uuid,
 127                            (unsigned long)btrfs_header_chunk_tree_uuid(eb),
 128                            BTRFS_UUID_SIZE);
 129
 130         chunk_uuid[36] = '\0';
 131         uuid_unparse(disk_uuid, chunk_uuid);
 132         printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
 133 }
 134
 135 static void print_file_extent_item(struct extent_buffer *eb,
 136                                    struct btrfs_item *item,
 137                                    struct btrfs_file_extent_item *fi)
 138 {
 139         int extent_type = btrfs_file_extent_type(eb, fi);
 140
 141         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 142                 printf("\t\tinline extent data size %u "
 143                        "ram %u compress %d\n",
 144                   btrfs_file_extent_inline_item_len(eb, item),
 145                   btrfs_file_extent_inline_len(eb, fi),
 146                   btrfs_file_extent_compression(eb, fi));
 147                 return;
 148         }
 149         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 150                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 151                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 152                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 153                 printf("\t\tprealloc data offset %llu nr %llu\n",
 154                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 155                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 156                 return;
 157         }
 158         printf("\t\textent data disk byte %llu nr %llu\n",
 159                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 160                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 161         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 162                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 163                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 164                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 165         printf("\t\textent compression %d\n",
 166                btrfs_file_extent_compression(eb, fi));
 167 }
 168
 169 static void print_extent_item(struct extent_buffer *eb, int slot)
 170 {
 171         struct btrfs_extent_item *ei;
 172         struct btrfs_extent_inline_ref *iref;
 173         struct btrfs_extent_data_ref *dref;
 174         struct btrfs_shared_data_ref *sref;
 175         struct btrfs_disk_key key;
 176         unsigned long end;
 177         unsigned long ptr;
 178         int type;
 179         u32 item_size = btrfs_item_size_nr(eb, slot);
 180         u64 flags;
 181         u64 offset;
 182
 183         if (item_size < sizeof(*ei)) {
 184 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 185                 struct btrfs_extent_item_v0 *ei0;
 186                 BUG_ON(item_size != sizeof(*ei0));
 187                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 188                 printf("\t\textent refs %u\n",
 189                        btrfs_extent_refs_v0(eb, ei0));
 190                 return;
 191 #else
 192                 BUG();
 193 #endif
 194         }
 195
 196         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 197         flags = btrfs_extent_flags(eb, ei);
 198
 199         printf("\t\textent refs %llu gen %llu flags %llu\n",
 200                (unsigned long long)btrfs_extent_refs(eb, ei),
 201                (unsigned long long)btrfs_extent_generation(eb, ei),
 202                (unsigned long long)flags);
 203
 204         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 205                 struct btrfs_tree_block_info *info;
 206                 info = (struct btrfs_tree_block_info *)(ei + 1);
 207                 btrfs_tree_block_key(eb, info, &key);
 208                 printf("\t\ttree block key (%llu %x %llu) level %d\n",
 209                        (unsigned long long)btrfs_disk_key_objectid(&key),
 210                        key.type,
 211                        (unsigned long long)btrfs_disk_key_offset(&key),
 212                        btrfs_tree_block_level(eb, info));
 213                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 214         } else {
 215                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 216         }
 217
 218         ptr = (unsigned long)iref;
 219         end = (unsigned long)ei + item_size;
 220         while (ptr < end) {
 221                 iref = (struct btrfs_extent_inline_ref *)ptr;
 222                 type = btrfs_extent_inline_ref_type(eb, iref);
 223                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 224                 switch (type) {
 225                 case BTRFS_TREE_BLOCK_REF_KEY:
 226                         printf("\t\ttree block backref root %llu\n",
 227                                (unsigned long long)offset);
 228                         break;
 229                 case BTRFS_SHARED_BLOCK_REF_KEY:
 230                         printf("\t\tshared block backref parent %llu\n",
 231                                (unsigned long long)offset);
 232                         break;
 233                 case BTRFS_EXTENT_DATA_REF_KEY:
 234                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 235                         printf("\t\textent data backref root %llu "
 236                                "objectid %llu offset %llu count %u\n",
 237                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 238                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 239                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 240                                btrfs_extent_data_ref_count(eb, dref));
 241                         break;
 242                 case BTRFS_SHARED_DATA_REF_KEY:
 243                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 244                         printf("\t\tshared data backref parent %llu count %u\n",
 245                                (unsigned long long)offset,
 246                                btrfs_shared_data_ref_count(eb, sref));
 247                         break;
 248                 default:
 249                         return;
 250                 }
 251                 ptr += btrfs_extent_inline_ref_size(type);
 252         }
 253         WARN_ON(ptr > end);
 254 }
 255
 256 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 257 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 258 {
 259         struct btrfs_extent_ref_v0 *ref0;
 260
 261         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 262         printf("\t\textent back ref root %llu gen %llu "
 263                 "owner %llu num_refs %lu\n",
 264                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 265                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 266                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 267                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 268 }
 269 #endif
 270
 271 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 272 {
 273         struct btrfs_root_ref *ref;
 274         char namebuf[BTRFS_NAME_LEN];
 275         int namelen;
 276
 277         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 278         namelen = btrfs_root_ref_name_len(leaf, ref);
 279         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 280         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 281                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 282                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 283                namelen, namebuf);
 284 }
 285
 286 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 287 {
 288         struct btrfs_free_space_header *header;
 289         struct btrfs_disk_key location;
 290
 291         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 292         btrfs_free_space_key(leaf, header, &location);
 293         printf("\t\tlocation ");
 294         btrfs_print_key(&location);
 295         printf("\n");
 296         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 297                (unsigned long long)btrfs_free_space_generation(leaf, header),
 298                (unsigned long long)btrfs_free_space_entries(leaf, header),
 299                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 300 }
 301
 302 static void print_key_type(u64 objectid, u8 type)
 303 {
 304         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 305                 printf("UNTYPED");
 306                 return;
 307         }
 308
 309         switch (type) {
 310         case BTRFS_INODE_ITEM_KEY:
 311                 printf("INODE_ITEM");
 312                 break;
 313         case BTRFS_INODE_REF_KEY:
 314                 printf("INODE_REF");
 315                 break;
 316         case BTRFS_DIR_ITEM_KEY:
 317                 printf("DIR_ITEM");
 318                 break;
 319         case BTRFS_DIR_INDEX_KEY:
 320                 printf("DIR_INDEX");
 321                 break;
 322         case BTRFS_DIR_LOG_ITEM_KEY:
 323                 printf("DIR_LOG_ITEM");
 324                 break;
 325         case BTRFS_DIR_LOG_INDEX_KEY:
 326                 printf("DIR_LOG_INDEX");
 327                 break;
 328         case BTRFS_XATTR_ITEM_KEY:
 329                 printf("XATTR_ITEM");
 330                 break;
 331         case BTRFS_ORPHAN_ITEM_KEY:
 332                 printf("ORPHAN_ITEM");
 333                 break;
 334         case BTRFS_ROOT_ITEM_KEY:
 335                 printf("ROOT_ITEM");
 336                 break;
 337         case BTRFS_ROOT_REF_KEY:
 338                 printf("ROOT_REF");
 339                 break;
 340         case BTRFS_ROOT_BACKREF_KEY:
 341                 printf("ROOT_BACKREF");
 342                 break;
 343         case BTRFS_EXTENT_ITEM_KEY:
 344                 printf("EXTENT_ITEM");
 345                 break;
 346         case BTRFS_TREE_BLOCK_REF_KEY:
 347                 printf("TREE_BLOCK_REF");
 348                 break;
 349         case BTRFS_SHARED_BLOCK_REF_KEY:
 350                 printf("SHARED_BLOCK_REF");
 351                 break;
 352         case BTRFS_EXTENT_DATA_REF_KEY:
 353                 printf("EXTENT_DATA_REF");
 354                 break;
 355         case BTRFS_SHARED_DATA_REF_KEY:
 356                 printf("SHARED_DATA_REF");
 357                 break;
 358         case BTRFS_EXTENT_REF_V0_KEY:
 359                 printf("EXTENT_REF_V0");
 360                 break;
 361         case BTRFS_CSUM_ITEM_KEY:
 362                 printf("CSUM_ITEM");
 363                 break;
 364         case BTRFS_EXTENT_CSUM_KEY:
 365                 printf("EXTENT_CSUM");
 366                 break;
 367         case BTRFS_EXTENT_DATA_KEY:
 368                 printf("EXTENT_DATA");
 369                 break;
 370         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 371                 printf("BLOCK_GROUP_ITEM");
 372                 break;
 373         case BTRFS_CHUNK_ITEM_KEY:
 374                 printf("CHUNK_ITEM");
 375                 break;
 376         case BTRFS_DEV_ITEM_KEY:
 377                 printf("DEV_ITEM");
 378                 break;
 379         case BTRFS_DEV_EXTENT_KEY:
 380                 printf("DEV_EXTENT");
 381                 break;
 382         case BTRFS_BALANCE_ITEM_KEY:
 383                 printf("BALANCE_ITEM");
 384                 break;
 385         case BTRFS_STRING_ITEM_KEY:
 386                 printf("STRING_ITEM");
 387                 break;
 388         default:
 389                 printf("UNKNOWN");
 390         };
 391 }
 392
 393 static void print_objectid(u64 objectid, u8 type)
 394 {
 395         if (type == BTRFS_DEV_EXTENT_KEY) {
 396                 printf("%llu", (unsigned long long)objectid); /* device id */
 397                 return;
 398         }
 399
 400         switch (objectid) {
 401         case BTRFS_ROOT_TREE_OBJECTID:
 402                 if (type == BTRFS_DEV_ITEM_KEY)
 403                         printf("DEV_ITEMS");
 404                 else
 405                         printf("ROOT_TREE");
 406                 break;
 407         case BTRFS_EXTENT_TREE_OBJECTID:
 408                 printf("EXTENT_TREE");
 409                 break;
 410         case BTRFS_CHUNK_TREE_OBJECTID:
 411                 printf("CHUNK_TREE");
 412                 break;
 413         case BTRFS_DEV_TREE_OBJECTID:
 414                 printf("DEV_TREE");
 415                 break;
 416         case BTRFS_FS_TREE_OBJECTID:
 417                 printf("FS_TREE");
 418                 break;
 419         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 420                 printf("ROOT_TREE_DIR");
 421                 break;
 422         case BTRFS_CSUM_TREE_OBJECTID:
 423                 printf("CSUM_TREE");
 424                 break;
 425         case BTRFS_BALANCE_OBJECTID:
 426                 printf("BALANCE");
 427                 break;
 428         case BTRFS_ORPHAN_OBJECTID:
 429                 printf("ORPHAN");
 430                 break;
 431         case BTRFS_TREE_LOG_OBJECTID:
 432                 printf("TREE_LOG");
 433                 break;
 434         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 435                 printf("LOG_FIXUP");
 436                 break;
 437         case BTRFS_TREE_RELOC_OBJECTID:
 438                 printf("TREE_RELOC");
 439                 break;
 440         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 441                 printf("DATA_RELOC_TREE");
 442                 break;
 443         case BTRFS_EXTENT_CSUM_OBJECTID:
 444                 printf("EXTENT_CSUM");
 445                 break;
 446         case BTRFS_FREE_SPACE_OBJECTID:
 447                 printf("FREE_SPACE");
 448                 break;
 449         case BTRFS_FREE_INO_OBJECTID:
 450                 printf("FREE_INO");
 451                 break;
 452         case BTRFS_MULTIPLE_OBJECTIDS:
 453                 printf("MULTIPLE");
 454                 break;
 455         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 456                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 457                         printf("FIRST_CHUNK_TREE");
 458                         break;
 459                 }
 460                 /* fall-thru */
 461         default:
 462                 printf("%llu", (unsigned long long)objectid);
 463         }
 464 }
 465
 466 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 467 {
 468         u64 objectid = btrfs_disk_key_objectid(disk_key);
 469         u8 type = btrfs_disk_key_type(disk_key);
 470
 471         printf("key (");
 472         print_objectid(objectid, type);
 473         printf(" ");
 474         print_key_type(objectid, type);
 475         printf(" %llu)", (unsigned long long)btrfs_disk_key_offset(disk_key));
 476 }
 477
 478 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 479 {
 480         int i;
 481         char *str;
 482         struct btrfs_item *item;
 483         struct btrfs_root_item *ri;
 484         struct btrfs_dir_item *di;
 485         struct btrfs_inode_item *ii;
 486         struct btrfs_file_extent_item *fi;
 487         struct btrfs_block_group_item *bi;
 488         struct btrfs_extent_data_ref *dref;
 489         struct btrfs_shared_data_ref *sref;
 490         struct btrfs_inode_ref *iref;
 491         struct btrfs_dev_extent *dev_extent;
 492         struct btrfs_disk_key disk_key;
 493         struct btrfs_root_item root_item;
 494         struct btrfs_block_group_item bg_item;
 495         struct btrfs_dir_log_item *dlog;
 496         u32 nr = btrfs_header_nritems(l);
 497         u64 objectid;
 498         u32 type;
 499
 500         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 501                 (unsigned long long)btrfs_header_bytenr(l), nr,
 502                 btrfs_leaf_free_space(root, l),
 503                 (unsigned long long)btrfs_header_generation(l),
 504                 (unsigned long long)btrfs_header_owner(l));
 505         print_uuids(l);
 506         fflush(stdout);
 507         for (i = 0 ; i < nr ; i++) {
 508                 item = btrfs_item_nr(l, i);
 509                 btrfs_item_key(l, &disk_key, i);
 510                 objectid = btrfs_disk_key_objectid(&disk_key);
 511                 type = btrfs_disk_key_type(&disk_key);
 512                 printf("\titem %d ", i);
 513                 btrfs_print_key(&disk_key);
 514                 printf(" itemoff %d itemsize %d\n",
 515                         btrfs_item_offset(l, item),
 516                         btrfs_item_size(l, item));
 517
 518                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
 519                         print_free_space_header(l, i);
 520
 521                 switch (type) {
 522                 case BTRFS_INODE_ITEM_KEY:
 523                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
 524                         printf("\t\tinode generation %llu transid %llu size %llu block group %llu mode %o links %u\n",
 525                                (unsigned long long)btrfs_inode_generation(l, ii),
 526                                (unsigned long long)btrfs_inode_transid(l, ii),
 527                                (unsigned long long)btrfs_inode_size(l, ii),
 528                                (unsigned long long)btrfs_inode_block_group(l,ii),
 529                                btrfs_inode_mode(l, ii),
 530                                btrfs_inode_nlink(l, ii));
 531                         break;
 532                 case BTRFS_INODE_REF_KEY:
 533                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
 534                         print_inode_ref_item(l, item, iref);
 535                         break;
 536                 case BTRFS_DIR_ITEM_KEY:
 537                 case BTRFS_DIR_INDEX_KEY:
 538                 case BTRFS_XATTR_ITEM_KEY:
 539                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
 540                         print_dir_item(l, item, di);
 541                         break;
 542                 case BTRFS_DIR_LOG_INDEX_KEY:
 543                 case BTRFS_DIR_LOG_ITEM_KEY:
 544                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
 545                         printf("\t\tdir log end %Lu\n",
 546                                (unsigned long long)btrfs_dir_log_end(l, dlog));
 547                        break;
 548                 case BTRFS_ORPHAN_ITEM_KEY:
 549                         printf("\t\torphan item\n");
 550                         break;
 551                 case BTRFS_ROOT_ITEM_KEY:
 552                         ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
 553                         read_extent_buffer(l, &root_item, (unsigned long)ri, sizeof(root_item));
 554                         printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu\n",
 555                                 (unsigned long long)btrfs_root_bytenr(&root_item),
 556                                 btrfs_root_level(&root_item),
 557                                 (unsigned long long)btrfs_root_dirid(&root_item),
 558                                 btrfs_root_refs(&root_item),
 559                                 (unsigned long long)btrfs_root_generation(&root_item));
 560                         if (btrfs_root_refs(&root_item) == 0) {
 561                                 struct btrfs_key drop_key;
 562                                 btrfs_disk_key_to_cpu(&drop_key,
 563                                                       &root_item.drop_progress);
 564                                 printf("\t\tdrop ");
 565                                 btrfs_print_key(&root_item.drop_progress);
 566                                 printf(" level %d\n", root_item.drop_level);
 567                         }
 568                         break;
 569                 case BTRFS_ROOT_REF_KEY:
 570                         print_root_ref(l, i, "ref");
 571                         break;
 572                 case BTRFS_ROOT_BACKREF_KEY:
 573                         print_root_ref(l, i, "backref");
 574                         break;
 575                 case BTRFS_EXTENT_ITEM_KEY:
 576                         print_extent_item(l, i);
 577                         break;
 578                 case BTRFS_TREE_BLOCK_REF_KEY:
 579                         printf("\t\ttree block backref\n");
 580                         break;
 581                 case BTRFS_SHARED_BLOCK_REF_KEY:
 582                         printf("\t\tshared block backref\n");
 583                         break;
 584                 case BTRFS_EXTENT_DATA_REF_KEY:
 585                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
 586                         printf("\t\textent data backref root %llu "
 587                                "objectid %llu offset %llu count %u\n",
 588                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
 589                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
 590                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
 591                                btrfs_extent_data_ref_count(l, dref));
 592                         break;
 593                 case BTRFS_SHARED_DATA_REF_KEY:
 594                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
 595                         printf("\t\tshared data backref count %u\n",
 596                                btrfs_shared_data_ref_count(l, sref));
 597                         break;
 598                 case BTRFS_EXTENT_REF_V0_KEY:
 599 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 600                         print_extent_ref_v0(l, i);
 601 #else
 602                         BUG();
 603 #endif
 604                         break;
 605                 case BTRFS_CSUM_ITEM_KEY:
 606                         printf("\t\tcsum item\n");
 607                         break;
 608                 case BTRFS_EXTENT_CSUM_KEY:
 609                         printf("\t\textent csum item\n");
 610                         break;
 611                 case BTRFS_EXTENT_DATA_KEY:
 612                         fi = btrfs_item_ptr(l, i,
 613                                             struct btrfs_file_extent_item);
 614                         print_file_extent_item(l, item, fi);
 615                         break;
 616                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
 617                         bi = btrfs_item_ptr(l, i,
 618                                             struct btrfs_block_group_item);
 619                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
 620                                            sizeof(bg_item));
 621                         printf("\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
 622                                (unsigned long long)btrfs_block_group_used(&bg_item),
 623                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
 624                                (unsigned long long)btrfs_block_group_flags(&bg_item));
 625                         break;
 626                 case BTRFS_CHUNK_ITEM_KEY:
 627                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
 628                         break;
 629                 case BTRFS_DEV_ITEM_KEY:
 630                         print_dev_item(l, btrfs_item_ptr(l, i,
 631                                         struct btrfs_dev_item));
 632                         break;
 633                 case BTRFS_DEV_EXTENT_KEY:
 634                         dev_extent = btrfs_item_ptr(l, i,
 635                                                     struct btrfs_dev_extent);
 636                         printf("\t\tdev extent chunk_tree %llu\n"
 637                                "\t\tchunk objectid %llu chunk offset %llu "
 638                                "length %llu\n",
 639                                (unsigned long long)
 640                                btrfs_dev_extent_chunk_tree(l, dev_extent),
 641                                (unsigned long long)
 642                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
 643                                (unsigned long long)
 644                                btrfs_dev_extent_chunk_offset(l, dev_extent),
 645                                (unsigned long long)
 646                                btrfs_dev_extent_length(l, dev_extent));
 647                         break;
 648                 case BTRFS_STRING_ITEM_KEY:
 649                         /* dirty, but it's simple */
 650                         str = l->data + btrfs_item_ptr_offset(l, i);
 651                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
 652                         break;
 653                 };
 654                 fflush(stdout);
 655         }
 656 }
 657
 658 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
 659 {
 660         int i;
 661         u32 nr;
 662         u32 size;
 663         struct btrfs_disk_key disk_key;
 664         struct btrfs_key key;
 665
 666         if (!eb)
 667                 return;
 668         nr = btrfs_header_nritems(eb);
 669         if (btrfs_is_leaf(eb)) {
 670                 btrfs_print_leaf(root, eb);
 671                 return;
 672         }
 673         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
 674                (unsigned long long)eb->start,
 675                 btrfs_header_level(eb), nr,
 676                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
 677                 (unsigned long long)btrfs_header_generation(eb),
 678                 (unsigned long long)btrfs_header_owner(eb));
 679         print_uuids(eb);
 680         fflush(stdout);
 681         size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
 682         for (i = 0; i < nr; i++) {
 683                 u64 blocknr = btrfs_node_blockptr(eb, i);
 684                 btrfs_node_key(eb, &disk_key, i);
 685                 btrfs_disk_key_to_cpu(&key, &disk_key);
 686                 printf("\t");
 687                 btrfs_print_key(&disk_key);
 688                 printf(" block %llu (%llu) gen %llu\n",
 689                        (unsigned long long)blocknr,
 690                        (unsigned long long)blocknr / size,
 691                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
 692                 fflush(stdout);
 693         }
 694         if (!follow)
 695                 return;
 696
 697         for (i = 0; i < nr; i++) {
 698                 struct extent_buffer *next = read_tree_block(root,
 699                                              btrfs_node_blockptr(eb, i),
 700                                              size,
 701                                              btrfs_node_ptr_generation(eb, i));
 702                 if (!next) {
 703                         fprintf(stderr, "failed to read %llu in tree %llu\n",
 704                                 (unsigned long long)btrfs_node_blockptr(eb, i),
 705                                 (unsigned long long)btrfs_header_owner(eb));
 706                         continue;
 707                 }
 708                 if (btrfs_is_leaf(next) &&
 709                     btrfs_header_level(eb) != 1)
 710                         BUG();
 711                 if (btrfs_header_level(next) !=
 712                         btrfs_header_level(eb) - 1)
 713                         BUG();
 714                 btrfs_print_tree(root, next, 1);
 715                 free_extent_buffer(next);
 716         }
 717 }