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