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 ");
 209                 btrfs_print_key(&key);
 210                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 211                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 212         } else {
 213                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 214         }
 215
 216         ptr = (unsigned long)iref;
 217         end = (unsigned long)ei + item_size;
 218         while (ptr < end) {
 219                 iref = (struct btrfs_extent_inline_ref *)ptr;
 220                 type = btrfs_extent_inline_ref_type(eb, iref);
 221                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 222                 switch (type) {
 223                 case BTRFS_TREE_BLOCK_REF_KEY:
 224                         printf("\t\ttree block backref root %llu\n",
 225                                (unsigned long long)offset);
 226                         break;
 227                 case BTRFS_SHARED_BLOCK_REF_KEY:
 228                         printf("\t\tshared block backref parent %llu\n",
 229                                (unsigned long long)offset);
 230                         break;
 231                 case BTRFS_EXTENT_DATA_REF_KEY:
 232                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 233                         printf("\t\textent data backref root %llu "
 234                                "objectid %llu offset %llu count %u\n",
 235                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 236                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 237                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 238                                btrfs_extent_data_ref_count(eb, dref));
 239                         break;
 240                 case BTRFS_SHARED_DATA_REF_KEY:
 241                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 242                         printf("\t\tshared data backref parent %llu count %u\n",
 243                                (unsigned long long)offset,
 244                                btrfs_shared_data_ref_count(eb, sref));
 245                         break;
 246                 default:
 247                         return;
 248                 }
 249                 ptr += btrfs_extent_inline_ref_size(type);
 250         }
 251         WARN_ON(ptr > end);
 252 }
 253
 254 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 255 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 256 {
 257         struct btrfs_extent_ref_v0 *ref0;
 258
 259         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 260         printf("\t\textent back ref root %llu gen %llu "
 261                 "owner %llu num_refs %lu\n",
 262                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 263                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 264                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 265                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 266 }
 267 #endif
 268
 269 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 270 {
 271         struct btrfs_root_ref *ref;
 272         char namebuf[BTRFS_NAME_LEN];
 273         int namelen;
 274
 275         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 276         namelen = btrfs_root_ref_name_len(leaf, ref);
 277         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 278         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 279                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 280                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 281                namelen, namebuf);
 282 }
 283
 284 static int count_bytes(void *buf, int len, char b)
 285 {
 286         int cnt = 0;
 287         int i;
 288         for (i = 0; i < len; i++) {
 289                 if (((char*)buf)[i] == b)
 290                         cnt++;
 291         }
 292         return cnt;
 293 }
 294
 295 static void print_root(struct extent_buffer *leaf, int slot)
 296 {
 297         struct btrfs_root_item *ri;
 298         struct btrfs_root_item root_item;
 299         int len;
 300         char uuid_str[128];
 301
 302         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 303         len = btrfs_item_size_nr(leaf, slot);
 304
 305         memset(&root_item, 0, sizeof(root_item));
 306         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 307
 308         printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu\n",
 309                 (unsigned long long)btrfs_root_bytenr(&root_item),
 310                 btrfs_root_level(&root_item),
 311                 (unsigned long long)btrfs_root_dirid(&root_item),
 312                 btrfs_root_refs(&root_item),
 313                 (unsigned long long)btrfs_root_generation(&root_item));
 314
 315         if (root_item.generation == root_item.generation_v2) {
 316                 uuid_unparse(root_item.uuid, uuid_str);
 317                 printf("\t\tuuid %s\n", uuid_str);
 318                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 319                         uuid_unparse(root_item.parent_uuid, uuid_str);
 320                         printf("\t\tparent_uuid %s\n", uuid_str);
 321                 }
 322                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 323                         uuid_unparse(root_item.received_uuid, uuid_str);
 324                         printf("\t\treceived_uuid %s\n", uuid_str);
 325                 }
 326                 if (root_item.ctransid) {
 327                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 328                                 btrfs_root_ctransid(&root_item),
 329                                 btrfs_root_otransid(&root_item),
 330                                 btrfs_root_stransid(&root_item),
 331                                 btrfs_root_rtransid(&root_item));
 332                 }
 333         }
 334         if (btrfs_root_refs(&root_item) == 0) {
 335                 struct btrfs_key drop_key;
 336                 btrfs_disk_key_to_cpu(&drop_key,
 337                                       &root_item.drop_progress);
 338                 printf("\t\tdrop ");
 339                 btrfs_print_key(&root_item.drop_progress);
 340                 printf(" level %d\n", root_item.drop_level);
 341         }
 342 }
 343
 344 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 345 {
 346         struct btrfs_free_space_header *header;
 347         struct btrfs_disk_key location;
 348
 349         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 350         btrfs_free_space_key(leaf, header, &location);
 351         printf("\t\tlocation ");
 352         btrfs_print_key(&location);
 353         printf("\n");
 354         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 355                (unsigned long long)btrfs_free_space_generation(leaf, header),
 356                (unsigned long long)btrfs_free_space_entries(leaf, header),
 357                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 358 }
 359
 360 static void print_key_type(u64 objectid, u8 type)
 361 {
 362         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 363                 printf("UNTYPED");
 364                 return;
 365         }
 366
 367         switch (type) {
 368         case BTRFS_INODE_ITEM_KEY:
 369                 printf("INODE_ITEM");
 370                 break;
 371         case BTRFS_INODE_REF_KEY:
 372                 printf("INODE_REF");
 373                 break;
 374         case BTRFS_DIR_ITEM_KEY:
 375                 printf("DIR_ITEM");
 376                 break;
 377         case BTRFS_DIR_INDEX_KEY:
 378                 printf("DIR_INDEX");
 379                 break;
 380         case BTRFS_DIR_LOG_ITEM_KEY:
 381                 printf("DIR_LOG_ITEM");
 382                 break;
 383         case BTRFS_DIR_LOG_INDEX_KEY:
 384                 printf("DIR_LOG_INDEX");
 385                 break;
 386         case BTRFS_XATTR_ITEM_KEY:
 387                 printf("XATTR_ITEM");
 388                 break;
 389         case BTRFS_ORPHAN_ITEM_KEY:
 390                 printf("ORPHAN_ITEM");
 391                 break;
 392         case BTRFS_ROOT_ITEM_KEY:
 393                 printf("ROOT_ITEM");
 394                 break;
 395         case BTRFS_ROOT_REF_KEY:
 396                 printf("ROOT_REF");
 397                 break;
 398         case BTRFS_ROOT_BACKREF_KEY:
 399                 printf("ROOT_BACKREF");
 400                 break;
 401         case BTRFS_EXTENT_ITEM_KEY:
 402                 printf("EXTENT_ITEM");
 403                 break;
 404         case BTRFS_TREE_BLOCK_REF_KEY:
 405                 printf("TREE_BLOCK_REF");
 406                 break;
 407         case BTRFS_SHARED_BLOCK_REF_KEY:
 408                 printf("SHARED_BLOCK_REF");
 409                 break;
 410         case BTRFS_EXTENT_DATA_REF_KEY:
 411                 printf("EXTENT_DATA_REF");
 412                 break;
 413         case BTRFS_SHARED_DATA_REF_KEY:
 414                 printf("SHARED_DATA_REF");
 415                 break;
 416         case BTRFS_EXTENT_REF_V0_KEY:
 417                 printf("EXTENT_REF_V0");
 418                 break;
 419         case BTRFS_CSUM_ITEM_KEY:
 420                 printf("CSUM_ITEM");
 421                 break;
 422         case BTRFS_EXTENT_CSUM_KEY:
 423                 printf("EXTENT_CSUM");
 424                 break;
 425         case BTRFS_EXTENT_DATA_KEY:
 426                 printf("EXTENT_DATA");
 427                 break;
 428         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 429                 printf("BLOCK_GROUP_ITEM");
 430                 break;
 431         case BTRFS_CHUNK_ITEM_KEY:
 432                 printf("CHUNK_ITEM");
 433                 break;
 434         case BTRFS_DEV_ITEM_KEY:
 435                 printf("DEV_ITEM");
 436                 break;
 437         case BTRFS_DEV_EXTENT_KEY:
 438                 printf("DEV_EXTENT");
 439                 break;
 440         case BTRFS_BALANCE_ITEM_KEY:
 441                 printf("BALANCE_ITEM");
 442                 break;
 443         case BTRFS_STRING_ITEM_KEY:
 444                 printf("STRING_ITEM");
 445                 break;
 446         case BTRFS_QGROUP_STATUS_KEY:
 447                 printf("BTRFS_STATUS_KEY");
 448                 break;
 449         case BTRFS_QGROUP_RELATION_KEY:
 450                 printf("BTRFS_QGROUP_RELATION_KEY");
 451                 break;
 452         case BTRFS_QGROUP_INFO_KEY:
 453                 printf("BTRFS_QGROUP_INFO_KEY");
 454                 break;
 455         case BTRFS_QGROUP_LIMIT_KEY:
 456                 printf("BTRFS_QGROUP_LIMIT_KEY");
 457                 break;
 458         default:
 459                 printf("UNKNOWN.%d", type);
 460         };
 461 }
 462
 463 static void print_objectid(u64 objectid, u8 type)
 464 {
 465         if (type == BTRFS_DEV_EXTENT_KEY) {
 466                 printf("%llu", (unsigned long long)objectid); /* device id */
 467                 return;
 468         }
 469         switch (type) {
 470         case BTRFS_QGROUP_RELATION_KEY:
 471                 printf("%llu/%llu", objectid >> 48,
 472                         objectid & ((1ll << 48) - 1));
 473                 return;
 474         }
 475
 476         switch (objectid) {
 477         case BTRFS_ROOT_TREE_OBJECTID:
 478                 if (type == BTRFS_DEV_ITEM_KEY)
 479                         printf("DEV_ITEMS");
 480                 else
 481                         printf("ROOT_TREE");
 482                 break;
 483         case BTRFS_EXTENT_TREE_OBJECTID:
 484                 printf("EXTENT_TREE");
 485                 break;
 486         case BTRFS_CHUNK_TREE_OBJECTID:
 487                 printf("CHUNK_TREE");
 488                 break;
 489         case BTRFS_DEV_TREE_OBJECTID:
 490                 printf("DEV_TREE");
 491                 break;
 492         case BTRFS_FS_TREE_OBJECTID:
 493                 printf("FS_TREE");
 494                 break;
 495         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 496                 printf("ROOT_TREE_DIR");
 497                 break;
 498         case BTRFS_CSUM_TREE_OBJECTID:
 499                 printf("CSUM_TREE");
 500                 break;
 501         case BTRFS_BALANCE_OBJECTID:
 502                 printf("BALANCE");
 503                 break;
 504         case BTRFS_ORPHAN_OBJECTID:
 505                 printf("ORPHAN");
 506                 break;
 507         case BTRFS_TREE_LOG_OBJECTID:
 508                 printf("TREE_LOG");
 509                 break;
 510         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 511                 printf("LOG_FIXUP");
 512                 break;
 513         case BTRFS_TREE_RELOC_OBJECTID:
 514                 printf("TREE_RELOC");
 515                 break;
 516         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 517                 printf("DATA_RELOC_TREE");
 518                 break;
 519         case BTRFS_EXTENT_CSUM_OBJECTID:
 520                 printf("EXTENT_CSUM");
 521                 break;
 522         case BTRFS_FREE_SPACE_OBJECTID:
 523                 printf("FREE_SPACE");
 524                 break;
 525         case BTRFS_FREE_INO_OBJECTID:
 526                 printf("FREE_INO");
 527         case BTRFS_QUOTA_TREE_OBJECTID:
 528                 printf("QUOTA_TREE");
 529                 break;
 530         case BTRFS_MULTIPLE_OBJECTIDS:
 531                 printf("MULTIPLE");
 532                 break;
 533         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 534                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 535                         printf("FIRST_CHUNK_TREE");
 536                         break;
 537                 }
 538                 /* fall-thru */
 539         default:
 540                 printf("%llu", (unsigned long long)objectid);
 541         }
 542 }
 543
 544 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 545 {
 546         u64 objectid = btrfs_disk_key_objectid(disk_key);
 547         u8 type = btrfs_disk_key_type(disk_key);
 548         u64 offset = btrfs_disk_key_offset(disk_key);
 549
 550         printf("key (");
 551         print_objectid(objectid, type);
 552         printf(" ");
 553         print_key_type(objectid, type);
 554         switch (type) {
 555         case BTRFS_QGROUP_RELATION_KEY:
 556         case BTRFS_QGROUP_INFO_KEY:
 557         case BTRFS_QGROUP_LIMIT_KEY:
 558                 printf(" %llu/%llu)", (unsigned long long)(offset >> 48),
 559                         (unsigned long long)(offset & ((1ll << 48) - 1)));
 560                 break;
 561         default:
 562                 printf(" %llu)", (unsigned long long)offset);
 563                 break;
 564         }
 565 }
 566
 567 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 568 {
 569         int i;
 570         char *str;
 571         struct btrfs_item *item;
 572         struct btrfs_dir_item *di;
 573         struct btrfs_inode_item *ii;
 574         struct btrfs_file_extent_item *fi;
 575         struct btrfs_block_group_item *bi;
 576         struct btrfs_extent_data_ref *dref;
 577         struct btrfs_shared_data_ref *sref;
 578         struct btrfs_inode_ref *iref;
 579         struct btrfs_dev_extent *dev_extent;
 580         struct btrfs_disk_key disk_key;
 581         struct btrfs_block_group_item bg_item;
 582         struct btrfs_dir_log_item *dlog;
 583         struct btrfs_qgroup_info_item *qg_info;
 584         struct btrfs_qgroup_limit_item *qg_limit;
 585         struct btrfs_qgroup_status_item *qg_status;
 586         u32 nr = btrfs_header_nritems(l);
 587         u64 objectid;
 588         u32 type;
 589
 590         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 591                 (unsigned long long)btrfs_header_bytenr(l), nr,
 592                 btrfs_leaf_free_space(root, l),
 593                 (unsigned long long)btrfs_header_generation(l),
 594                 (unsigned long long)btrfs_header_owner(l));
 595         print_uuids(l);
 596         fflush(stdout);
 597         for (i = 0 ; i < nr ; i++) {
 598                 item = btrfs_item_nr(l, i);
 599                 btrfs_item_key(l, &disk_key, i);
 600                 objectid = btrfs_disk_key_objectid(&disk_key);
 601                 type = btrfs_disk_key_type(&disk_key);
 602                 printf("\titem %d ", i);
 603                 btrfs_print_key(&disk_key);
 604                 printf(" itemoff %d itemsize %d\n",
 605                         btrfs_item_offset(l, item),
 606                         btrfs_item_size(l, item));
 607
 608                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
 609                         print_free_space_header(l, i);
 610
 611                 switch (type) {
 612                 case BTRFS_INODE_ITEM_KEY:
 613                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
 614                         printf("\t\tinode generation %llu transid %llu size %llu block group %llu mode %o links %u\n",
 615                                (unsigned long long)btrfs_inode_generation(l, ii),
 616                                (unsigned long long)btrfs_inode_transid(l, ii),
 617                                (unsigned long long)btrfs_inode_size(l, ii),
 618                                (unsigned long long)btrfs_inode_block_group(l,ii),
 619                                btrfs_inode_mode(l, ii),
 620                                btrfs_inode_nlink(l, ii));
 621                         break;
 622                 case BTRFS_INODE_REF_KEY:
 623                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
 624                         print_inode_ref_item(l, item, iref);
 625                         break;
 626                 case BTRFS_DIR_ITEM_KEY:
 627                 case BTRFS_DIR_INDEX_KEY:
 628                 case BTRFS_XATTR_ITEM_KEY:
 629                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
 630                         print_dir_item(l, item, di);
 631                         break;
 632                 case BTRFS_DIR_LOG_INDEX_KEY:
 633                 case BTRFS_DIR_LOG_ITEM_KEY:
 634                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
 635                         printf("\t\tdir log end %Lu\n",
 636                                (unsigned long long)btrfs_dir_log_end(l, dlog));
 637                        break;
 638                 case BTRFS_ORPHAN_ITEM_KEY:
 639                         printf("\t\torphan item\n");
 640                         break;
 641                 case BTRFS_ROOT_ITEM_KEY:
 642                         print_root(l, i);
 643                         break;
 644                 case BTRFS_ROOT_REF_KEY:
 645                         print_root_ref(l, i, "ref");
 646                         break;
 647                 case BTRFS_ROOT_BACKREF_KEY:
 648                         print_root_ref(l, i, "backref");
 649                         break;
 650                 case BTRFS_EXTENT_ITEM_KEY:
 651                         print_extent_item(l, i);
 652                         break;
 653                 case BTRFS_TREE_BLOCK_REF_KEY:
 654                         printf("\t\ttree block backref\n");
 655                         break;
 656                 case BTRFS_SHARED_BLOCK_REF_KEY:
 657                         printf("\t\tshared block backref\n");
 658                         break;
 659                 case BTRFS_EXTENT_DATA_REF_KEY:
 660                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
 661                         printf("\t\textent data backref root %llu "
 662                                "objectid %llu offset %llu count %u\n",
 663                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
 664                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
 665                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
 666                                btrfs_extent_data_ref_count(l, dref));
 667                         break;
 668                 case BTRFS_SHARED_DATA_REF_KEY:
 669                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
 670                         printf("\t\tshared data backref count %u\n",
 671                                btrfs_shared_data_ref_count(l, sref));
 672                         break;
 673                 case BTRFS_EXTENT_REF_V0_KEY:
 674 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 675                         print_extent_ref_v0(l, i);
 676 #else
 677                         BUG();
 678 #endif
 679                         break;
 680                 case BTRFS_CSUM_ITEM_KEY:
 681                         printf("\t\tcsum item\n");
 682                         break;
 683                 case BTRFS_EXTENT_CSUM_KEY:
 684                         printf("\t\textent csum item\n");
 685                         break;
 686                 case BTRFS_EXTENT_DATA_KEY:
 687                         fi = btrfs_item_ptr(l, i,
 688                                             struct btrfs_file_extent_item);
 689                         print_file_extent_item(l, item, fi);
 690                         break;
 691                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
 692                         bi = btrfs_item_ptr(l, i,
 693                                             struct btrfs_block_group_item);
 694                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
 695                                            sizeof(bg_item));
 696                         printf("\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
 697                                (unsigned long long)btrfs_block_group_used(&bg_item),
 698                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
 699                                (unsigned long long)btrfs_block_group_flags(&bg_item));
 700                         break;
 701                 case BTRFS_CHUNK_ITEM_KEY:
 702                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
 703                         break;
 704                 case BTRFS_DEV_ITEM_KEY:
 705                         print_dev_item(l, btrfs_item_ptr(l, i,
 706                                         struct btrfs_dev_item));
 707                         break;
 708                 case BTRFS_DEV_EXTENT_KEY:
 709                         dev_extent = btrfs_item_ptr(l, i,
 710                                                     struct btrfs_dev_extent);
 711                         printf("\t\tdev extent chunk_tree %llu\n"
 712                                "\t\tchunk objectid %llu chunk offset %llu "
 713                                "length %llu\n",
 714                                (unsigned long long)
 715                                btrfs_dev_extent_chunk_tree(l, dev_extent),
 716                                (unsigned long long)
 717                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
 718                                (unsigned long long)
 719                                btrfs_dev_extent_chunk_offset(l, dev_extent),
 720                                (unsigned long long)
 721                                btrfs_dev_extent_length(l, dev_extent));
 722                         break;
 723                 case BTRFS_QGROUP_STATUS_KEY:
 724                         qg_status = btrfs_item_ptr(l, i,
 725                                         struct btrfs_qgroup_status_item);
 726                         printf("\t\tversion %llu generation %llu flags %#llx "
 727                                 "scan %lld\n",
 728                                 (unsigned long long)
 729                                 btrfs_qgroup_status_version(l, qg_status),
 730                                 (unsigned long long)
 731                                 btrfs_qgroup_status_generation(l, qg_status),
 732                                 (unsigned long long)
 733                                 btrfs_qgroup_status_flags(l, qg_status),
 734                                 (unsigned long long)
 735                                 btrfs_qgroup_status_scan(l, qg_status));
 736                         break;
 737                 case BTRFS_QGROUP_RELATION_KEY:
 738                         break;
 739                 case BTRFS_QGROUP_INFO_KEY:
 740                         qg_info = btrfs_item_ptr(l, i,
 741                                                  struct btrfs_qgroup_info_item);
 742                         printf("\t\tgeneration %llu\n"
 743                              "\t\treferenced %lld referenced compressed %lld\n"
 744                              "\t\texclusive %lld exclusive compressed %lld\n",
 745                                (unsigned long long)
 746                                btrfs_qgroup_info_generation(l, qg_info),
 747                                (long long)
 748                                btrfs_qgroup_info_referenced(l, qg_info),
 749                                (long long)
 750                                btrfs_qgroup_info_referenced_compressed(l,
 751                                                                        qg_info),
 752                                (long long)
 753                                btrfs_qgroup_info_exclusive(l, qg_info),
 754                                (long long)
 755                                btrfs_qgroup_info_exclusive_compressed(l,
 756                                                                       qg_info));
 757                         break;
 758                 case BTRFS_QGROUP_LIMIT_KEY:
 759                         qg_limit = btrfs_item_ptr(l, i,
 760                                          struct btrfs_qgroup_limit_item);
 761                         printf("\t\tflags %llx\n"
 762                              "\t\tmax referenced %lld max exclusive %lld\n"
 763                              "\t\trsv referenced %lld rsv exclusive %lld\n",
 764                                (unsigned long long)
 765                                btrfs_qgroup_limit_flags(l, qg_limit),
 766                                (long long)
 767                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
 768                                (long long)
 769                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
 770                                (long long)
 771                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
 772                                (long long)
 773                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
 774                         break;
 775                 case BTRFS_STRING_ITEM_KEY:
 776                         /* dirty, but it's simple */
 777                         str = l->data + btrfs_item_ptr_offset(l, i);
 778                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
 779                         break;
 780                 };
 781                 fflush(stdout);
 782         }
 783 }
 784
 785 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
 786 {
 787         int i;
 788         u32 nr;
 789         u32 size;
 790         struct btrfs_disk_key disk_key;
 791         struct btrfs_key key;
 792
 793         if (!eb)
 794                 return;
 795         nr = btrfs_header_nritems(eb);
 796         if (btrfs_is_leaf(eb)) {
 797                 btrfs_print_leaf(root, eb);
 798                 return;
 799         }
 800         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
 801                (unsigned long long)eb->start,
 802                 btrfs_header_level(eb), nr,
 803                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
 804                 (unsigned long long)btrfs_header_generation(eb),
 805                 (unsigned long long)btrfs_header_owner(eb));
 806         print_uuids(eb);
 807         fflush(stdout);
 808         size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
 809         for (i = 0; i < nr; i++) {
 810                 u64 blocknr = btrfs_node_blockptr(eb, i);
 811                 btrfs_node_key(eb, &disk_key, i);
 812                 btrfs_disk_key_to_cpu(&key, &disk_key);
 813                 printf("\t");
 814                 btrfs_print_key(&disk_key);
 815                 printf(" block %llu (%llu) gen %llu\n",
 816                        (unsigned long long)blocknr,
 817                        (unsigned long long)blocknr / size,
 818                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
 819                 fflush(stdout);
 820         }
 821         if (!follow)
 822                 return;
 823
 824         for (i = 0; i < nr; i++) {
 825                 struct extent_buffer *next = read_tree_block(root,
 826                                              btrfs_node_blockptr(eb, i),
 827                                              size,
 828                                              btrfs_node_ptr_generation(eb, i));
 829                 if (!next) {
 830                         fprintf(stderr, "failed to read %llu in tree %llu\n",
 831                                 (unsigned long long)btrfs_node_blockptr(eb, i),
 832                                 (unsigned long long)btrfs_header_owner(eb));
 833                         continue;
 834                 }
 835                 if (btrfs_is_leaf(next) &&
 836                     btrfs_header_level(eb) != 1)
 837                         BUG();
 838                 if (btrfs_header_level(next) !=
 839                         btrfs_header_level(eb) - 1)
 840                         BUG();
 841                 btrfs_print_tree(root, next, 1);
 842                 free_extent_buffer(next);
 843         }
 844 }