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 #include "utils.h"
  28
  29
  30 static void print_dir_item_type(struct extent_buffer *eb,
  31                                 struct btrfs_dir_item *di)
  32 {
  33         u8 type = btrfs_dir_type(eb, di);
  34
  35         switch (type) {
  36         case BTRFS_FT_REG_FILE:
  37                 printf("FILE");
  38                 break;
  39         case BTRFS_FT_DIR:
  40                 printf("DIR");
  41                 break;
  42         case BTRFS_FT_CHRDEV:
  43                 printf("CHRDEV");
  44                 break;
  45         case BTRFS_FT_BLKDEV:
  46                 printf("BLKDEV");
  47                 break;
  48         case BTRFS_FT_FIFO:
  49                 printf("FIFO");
  50                 break;
  51         case BTRFS_FT_SOCK:
  52                 printf("SOCK");
  53                 break;
  54         case BTRFS_FT_SYMLINK:
  55                 printf("SYMLINK");
  56                 break;
  57         case BTRFS_FT_XATTR:
  58                 printf("XATTR");
  59                 break;
  60         default:
  61                 printf("%u", type);
  62         }
  63 }
  64
  65 static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item,
  66                           struct btrfs_dir_item *di)
  67 {
  68         u32 total;
  69         u32 cur = 0;
  70         u32 len;
  71         u32 name_len;
  72         u32 data_len;
  73         char namebuf[BTRFS_NAME_LEN];
  74         struct btrfs_disk_key location;
  75
  76         total = btrfs_item_size(eb, item);
  77         while(cur < total) {
  78                 btrfs_dir_item_key(eb, di, &location);
  79                 printf("\t\tlocation ");
  80                 btrfs_print_key(&location);
  81                 printf(" type ");
  82                 print_dir_item_type(eb, di);
  83                 printf("\n");
  84                 name_len = btrfs_dir_name_len(eb, di);
  85                 data_len = btrfs_dir_data_len(eb, di);
  86                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
  87                 read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
  88                 printf("\t\tnamelen %u datalen %u name: %.*s\n",
  89                        name_len, data_len, len, namebuf);
  90                 if (data_len) {
  91                         len = (data_len <= sizeof(namebuf))? data_len: sizeof(namebuf);
  92                         read_extent_buffer(eb, namebuf,
  93                                 (unsigned long)(di + 1) + name_len, len);
  94                         printf("\t\tdata %.*s\n", len, namebuf);
  95                 }
  96                 len = sizeof(*di) + name_len + data_len;
  97                 di = (struct btrfs_dir_item *)((char *)di + len);
  98                 cur += len;
  99         }
 100         return 0;
 101 }
 102
 103 static int print_inode_extref_item(struct extent_buffer *eb,
 104                                    struct btrfs_item *item,
 105                                    struct btrfs_inode_extref *extref)
 106 {
 107         u32 total;
 108         u32 cur = 0;
 109         u32 len;
 110         u32 name_len = 0;
 111         u64 index = 0;
 112         u64 parent_objid;
 113         char namebuf[BTRFS_NAME_LEN];
 114
 115         total = btrfs_item_size(eb, item);
 116
 117         while (cur < total) {
 118                 index = btrfs_inode_extref_index(eb, extref);
 119                 name_len = btrfs_inode_extref_name_len(eb, extref);
 120                 parent_objid = btrfs_inode_extref_parent(eb, extref);
 121
 122                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 123
 124                 read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len);
 125
 126                 printf("\t\tinode extref index %llu parent %llu namelen %u "
 127                        "name: %.*s\n",
 128                        (unsigned long long)index,
 129                        (unsigned long long)parent_objid,
 130                        name_len, len, namebuf);
 131
 132                 len = sizeof(*extref) + name_len;
 133                 extref = (struct btrfs_inode_extref *)((char *)extref + len);
 134                 cur += len;
 135         }
 136         return 0;
 137 }
 138
 139 static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
 140                                 struct btrfs_inode_ref *ref)
 141 {
 142         u32 total;
 143         u32 cur = 0;
 144         u32 len;
 145         u32 name_len;
 146         u64 index;
 147         char namebuf[BTRFS_NAME_LEN];
 148         total = btrfs_item_size(eb, item);
 149         while(cur < total) {
 150                 name_len = btrfs_inode_ref_name_len(eb, ref);
 151                 index = btrfs_inode_ref_index(eb, ref);
 152                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 153                 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
 154                 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
 155                        (unsigned long long)index, name_len, len, namebuf);
 156                 len = sizeof(*ref) + name_len;
 157                 ref = (struct btrfs_inode_ref *)((char *)ref + len);
 158                 cur += len;
 159         }
 160         return 0;
 161 }
 162
 163 /* Caller should ensure sizeof(*ret)>=21 "DATA|METADATA|RAID10" */
 164 static void bg_flags_to_str(u64 flags, char *ret)
 165 {
 166         int empty = 1;
 167
 168         if (flags & BTRFS_BLOCK_GROUP_DATA) {
 169                 empty = 0;
 170                 strcpy(ret, "DATA");
 171         }
 172         if (flags & BTRFS_BLOCK_GROUP_METADATA) {
 173                 if (!empty)
 174                         strcat(ret, "|");
 175                 strcat(ret, "METADATA");
 176         }
 177         if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
 178                 if (!empty)
 179                         strcat(ret, "|");
 180                 strcat(ret, "SYSTEM");
 181         }
 182         switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
 183         case BTRFS_BLOCK_GROUP_RAID0:
 184                 strcat(ret, "|RAID0");
 185                 break;
 186         case BTRFS_BLOCK_GROUP_RAID1:
 187                 strcat(ret, "|RAID1");
 188                 break;
 189         case BTRFS_BLOCK_GROUP_DUP:
 190                 strcat(ret, "|DUP");
 191                 break;
 192         case BTRFS_BLOCK_GROUP_RAID10:
 193                 strcat(ret, "|RAID10");
 194                 break;
 195         case BTRFS_BLOCK_GROUP_RAID5:
 196                 strcat(ret, "|RAID5");
 197                 break;
 198         case BTRFS_BLOCK_GROUP_RAID6:
 199                 strcat(ret, "|RAID6");
 200                 break;
 201         default:
 202                 break;
 203         }
 204 }
 205
 206 /* Caller should ensure sizeof(*ret)>= 26 "OFF|SCANNING|INCONSISTENT" */
 207 static void qgroup_flags_to_str(u64 flags, char *ret)
 208 {
 209         if (flags & BTRFS_QGROUP_STATUS_FLAG_ON)
 210                 strcpy(ret, "ON");
 211         else
 212                 strcpy(ret, "OFF");
 213
 214         if (flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN)
 215                 strcat(ret, "|SCANNING");
 216         if (flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
 217                 strcat(ret, "|INCONSISTENT");
 218 }
 219
 220 void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
 221 {
 222         int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
 223         int i;
 224         char chunk_flags_str[32] = {0};
 225
 226         bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
 227         printf("\t\tchunk length %llu owner %llu stripe_len %llu\n",
 228                (unsigned long long)btrfs_chunk_length(eb, chunk),
 229                (unsigned long long)btrfs_chunk_owner(eb, chunk),
 230                (unsigned long long)btrfs_chunk_stripe_len(eb, chunk));
 231         printf("\t\ttype %s num_stripes %d\n",
 232                chunk_flags_str, num_stripes);
 233         for (i = 0 ; i < num_stripes ; i++) {
 234                 unsigned char dev_uuid[BTRFS_UUID_SIZE];
 235                 char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
 236
 237                 read_extent_buffer(eb, dev_uuid,
 238                         (unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
 239                         BTRFS_UUID_SIZE);
 240                 uuid_unparse(dev_uuid, str_dev_uuid);
 241                 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
 242                       (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
 243                       (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
 244                 printf("\t\t\tdev uuid: %s\n", str_dev_uuid);
 245         }
 246 }
 247
 248 static void print_dev_item(struct extent_buffer *eb,
 249                            struct btrfs_dev_item *dev_item)
 250 {
 251         char disk_uuid_c[BTRFS_UUID_UNPARSED_SIZE];
 252         u8 disk_uuid[BTRFS_UUID_SIZE];
 253
 254         read_extent_buffer(eb, disk_uuid,
 255                            (unsigned long)btrfs_device_uuid(dev_item),
 256                            BTRFS_UUID_SIZE);
 257         uuid_unparse(disk_uuid, disk_uuid_c);
 258         printf("\t\tdev item devid %llu "
 259                "total_bytes %llu bytes used %Lu\n"
 260                "\t\tdev uuid %s\n",
 261                (unsigned long long)btrfs_device_id(eb, dev_item),
 262                (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
 263                (unsigned long long)btrfs_device_bytes_used(eb, dev_item),
 264                disk_uuid_c);
 265 }
 266
 267 static void print_uuids(struct extent_buffer *eb)
 268 {
 269         char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
 270         char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
 271         u8 disk_uuid[BTRFS_UUID_SIZE];
 272
 273         read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(),
 274                            BTRFS_FSID_SIZE);
 275
 276         fs_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 277         uuid_unparse(disk_uuid, fs_uuid);
 278
 279         read_extent_buffer(eb, disk_uuid,
 280                            btrfs_header_chunk_tree_uuid(eb),
 281                            BTRFS_UUID_SIZE);
 282
 283         chunk_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 284         uuid_unparse(disk_uuid, chunk_uuid);
 285         printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
 286 }
 287
 288 static void print_file_extent_item(struct extent_buffer *eb,
 289                                    struct btrfs_item *item,
 290                                    int slot,
 291                                    struct btrfs_file_extent_item *fi)
 292 {
 293         int extent_type = btrfs_file_extent_type(eb, fi);
 294
 295         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 296                 printf("\t\tinline extent data size %u "
 297                        "ram %u compress %d\n",
 298                   btrfs_file_extent_inline_item_len(eb, item),
 299                   btrfs_file_extent_inline_len(eb, slot, fi),
 300                   btrfs_file_extent_compression(eb, fi));
 301                 return;
 302         }
 303         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 304                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 305                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 306                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 307                 printf("\t\tprealloc data offset %llu nr %llu\n",
 308                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 309                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 310                 return;
 311         }
 312         printf("\t\textent data disk byte %llu nr %llu\n",
 313                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 314                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 315         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 316                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 317                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 318                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 319         printf("\t\textent compression %d\n",
 320                btrfs_file_extent_compression(eb, fi));
 321 }
 322
 323 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 324 static void extent_flags_to_str(u64 flags, char *ret)
 325 {
 326         int empty = 1;
 327
 328         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 329                 empty = 0;
 330                 strcpy(ret, "DATA");
 331         }
 332         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 333                 if (!empty) {
 334                         empty = 0;
 335                         strcat(ret, "|");
 336                 }
 337                 strcat(ret, "TREE_BLOCK");
 338         }
 339         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 340                 strcat(ret, "|");
 341                 strcat(ret, "FULL_BACKREF");
 342         }
 343 }
 344
 345 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 346 {
 347         struct btrfs_extent_item *ei;
 348         struct btrfs_extent_inline_ref *iref;
 349         struct btrfs_extent_data_ref *dref;
 350         struct btrfs_shared_data_ref *sref;
 351         struct btrfs_disk_key key;
 352         unsigned long end;
 353         unsigned long ptr;
 354         int type;
 355         u32 item_size = btrfs_item_size_nr(eb, slot);
 356         u64 flags;
 357         u64 offset;
 358         char flags_str[32] = {0};
 359
 360         if (item_size < sizeof(*ei)) {
 361 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 362                 struct btrfs_extent_item_v0 *ei0;
 363                 BUG_ON(item_size != sizeof(*ei0));
 364                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 365                 printf("\t\textent refs %u\n",
 366                        btrfs_extent_refs_v0(eb, ei0));
 367                 return;
 368 #else
 369                 BUG();
 370 #endif
 371         }
 372
 373         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 374         flags = btrfs_extent_flags(eb, ei);
 375         extent_flags_to_str(flags, flags_str);
 376
 377         printf("\t\textent refs %llu gen %llu flags %s\n",
 378                (unsigned long long)btrfs_extent_refs(eb, ei),
 379                (unsigned long long)btrfs_extent_generation(eb, ei),
 380                flags_str);
 381
 382         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 383                 struct btrfs_tree_block_info *info;
 384                 info = (struct btrfs_tree_block_info *)(ei + 1);
 385                 btrfs_tree_block_key(eb, info, &key);
 386                 printf("\t\ttree block ");
 387                 btrfs_print_key(&key);
 388                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 389                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 390         } else if (metadata) {
 391                 struct btrfs_key tmp;
 392
 393                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 394                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 395                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 396         } else{
 397                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 398         }
 399
 400         ptr = (unsigned long)iref;
 401         end = (unsigned long)ei + item_size;
 402         while (ptr < end) {
 403                 iref = (struct btrfs_extent_inline_ref *)ptr;
 404                 type = btrfs_extent_inline_ref_type(eb, iref);
 405                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 406                 switch (type) {
 407                 case BTRFS_TREE_BLOCK_REF_KEY:
 408                         printf("\t\ttree block backref root %llu\n",
 409                                (unsigned long long)offset);
 410                         break;
 411                 case BTRFS_SHARED_BLOCK_REF_KEY:
 412                         printf("\t\tshared block backref parent %llu\n",
 413                                (unsigned long long)offset);
 414                         break;
 415                 case BTRFS_EXTENT_DATA_REF_KEY:
 416                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 417                         printf("\t\textent data backref root %llu "
 418                                "objectid %llu offset %llu count %u\n",
 419                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 420                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 421                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 422                                btrfs_extent_data_ref_count(eb, dref));
 423                         break;
 424                 case BTRFS_SHARED_DATA_REF_KEY:
 425                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 426                         printf("\t\tshared data backref parent %llu count %u\n",
 427                                (unsigned long long)offset,
 428                                btrfs_shared_data_ref_count(eb, sref));
 429                         break;
 430                 default:
 431                         return;
 432                 }
 433                 ptr += btrfs_extent_inline_ref_size(type);
 434         }
 435         WARN_ON(ptr > end);
 436 }
 437
 438 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 439 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 440 {
 441         struct btrfs_extent_ref_v0 *ref0;
 442
 443         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 444         printf("\t\textent back ref root %llu gen %llu "
 445                 "owner %llu num_refs %lu\n",
 446                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 447                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 448                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 449                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 450 }
 451 #endif
 452
 453 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 454 {
 455         struct btrfs_root_ref *ref;
 456         char namebuf[BTRFS_NAME_LEN];
 457         int namelen;
 458
 459         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 460         namelen = btrfs_root_ref_name_len(leaf, ref);
 461         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 462         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 463                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 464                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 465                namelen, namebuf);
 466 }
 467
 468 static int count_bytes(void *buf, int len, char b)
 469 {
 470         int cnt = 0;
 471         int i;
 472         for (i = 0; i < len; i++) {
 473                 if (((char*)buf)[i] == b)
 474                         cnt++;
 475         }
 476         return cnt;
 477 }
 478
 479 static void print_root(struct extent_buffer *leaf, int slot)
 480 {
 481         struct btrfs_root_item *ri;
 482         struct btrfs_root_item root_item;
 483         int len;
 484         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 485
 486         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 487         len = btrfs_item_size_nr(leaf, slot);
 488
 489         memset(&root_item, 0, sizeof(root_item));
 490         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 491
 492         printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %llu\n",
 493                 (unsigned long long)btrfs_root_bytenr(&root_item),
 494                 btrfs_root_level(&root_item),
 495                 (unsigned long long)btrfs_root_dirid(&root_item),
 496                 btrfs_root_refs(&root_item),
 497                 (unsigned long long)btrfs_root_generation(&root_item),
 498                 (unsigned long long)btrfs_root_last_snapshot(&root_item));
 499
 500         if (root_item.generation == root_item.generation_v2) {
 501                 uuid_unparse(root_item.uuid, uuid_str);
 502                 printf("\t\tuuid %s\n", uuid_str);
 503                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 504                         uuid_unparse(root_item.parent_uuid, uuid_str);
 505                         printf("\t\tparent_uuid %s\n", uuid_str);
 506                 }
 507                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 508                         uuid_unparse(root_item.received_uuid, uuid_str);
 509                         printf("\t\treceived_uuid %s\n", uuid_str);
 510                 }
 511                 if (root_item.ctransid) {
 512                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 513                                 btrfs_root_ctransid(&root_item),
 514                                 btrfs_root_otransid(&root_item),
 515                                 btrfs_root_stransid(&root_item),
 516                                 btrfs_root_rtransid(&root_item));
 517                 }
 518         }
 519         if (btrfs_root_refs(&root_item) == 0) {
 520                 struct btrfs_key drop_key;
 521                 btrfs_disk_key_to_cpu(&drop_key,
 522                                       &root_item.drop_progress);
 523                 printf("\t\tdrop ");
 524                 btrfs_print_key(&root_item.drop_progress);
 525                 printf(" level %d\n", root_item.drop_level);
 526         }
 527 }
 528
 529 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 530 {
 531         struct btrfs_free_space_header *header;
 532         struct btrfs_disk_key location;
 533
 534         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 535         btrfs_free_space_key(leaf, header, &location);
 536         printf("\t\tlocation ");
 537         btrfs_print_key(&location);
 538         printf("\n");
 539         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 540                (unsigned long long)btrfs_free_space_generation(leaf, header),
 541                (unsigned long long)btrfs_free_space_entries(leaf, header),
 542                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 543 }
 544
 545 static void print_key_type(u64 objectid, u8 type)
 546 {
 547         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 548                 printf("UNTYPED");
 549                 return;
 550         }
 551
 552         switch (type) {
 553         case BTRFS_INODE_ITEM_KEY:
 554                 printf("INODE_ITEM");
 555                 break;
 556         case BTRFS_INODE_REF_KEY:
 557                 printf("INODE_REF");
 558                 break;
 559         case BTRFS_INODE_EXTREF_KEY:
 560                 printf("INODE_EXTREF");
 561                 break;
 562         case BTRFS_DIR_ITEM_KEY:
 563                 printf("DIR_ITEM");
 564                 break;
 565         case BTRFS_DIR_INDEX_KEY:
 566                 printf("DIR_INDEX");
 567                 break;
 568         case BTRFS_DIR_LOG_ITEM_KEY:
 569                 printf("DIR_LOG_ITEM");
 570                 break;
 571         case BTRFS_DIR_LOG_INDEX_KEY:
 572                 printf("DIR_LOG_INDEX");
 573                 break;
 574         case BTRFS_XATTR_ITEM_KEY:
 575                 printf("XATTR_ITEM");
 576                 break;
 577         case BTRFS_ORPHAN_ITEM_KEY:
 578                 printf("ORPHAN_ITEM");
 579                 break;
 580         case BTRFS_ROOT_ITEM_KEY:
 581                 printf("ROOT_ITEM");
 582                 break;
 583         case BTRFS_ROOT_REF_KEY:
 584                 printf("ROOT_REF");
 585                 break;
 586         case BTRFS_ROOT_BACKREF_KEY:
 587                 printf("ROOT_BACKREF");
 588                 break;
 589         case BTRFS_EXTENT_ITEM_KEY:
 590                 printf("EXTENT_ITEM");
 591                 break;
 592         case BTRFS_METADATA_ITEM_KEY:
 593                 printf("METADATA_ITEM");
 594                 break;
 595         case BTRFS_TREE_BLOCK_REF_KEY:
 596                 printf("TREE_BLOCK_REF");
 597                 break;
 598         case BTRFS_SHARED_BLOCK_REF_KEY:
 599                 printf("SHARED_BLOCK_REF");
 600                 break;
 601         case BTRFS_EXTENT_DATA_REF_KEY:
 602                 printf("EXTENT_DATA_REF");
 603                 break;
 604         case BTRFS_SHARED_DATA_REF_KEY:
 605                 printf("SHARED_DATA_REF");
 606                 break;
 607         case BTRFS_EXTENT_REF_V0_KEY:
 608                 printf("EXTENT_REF_V0");
 609                 break;
 610         case BTRFS_CSUM_ITEM_KEY:
 611                 printf("CSUM_ITEM");
 612                 break;
 613         case BTRFS_EXTENT_CSUM_KEY:
 614                 printf("EXTENT_CSUM");
 615                 break;
 616         case BTRFS_EXTENT_DATA_KEY:
 617                 printf("EXTENT_DATA");
 618                 break;
 619         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 620                 printf("BLOCK_GROUP_ITEM");
 621                 break;
 622         case BTRFS_FREE_SPACE_INFO_KEY:
 623                 printf("FREE_SPACE_INFO");
 624                 break;
 625         case BTRFS_FREE_SPACE_EXTENT_KEY:
 626                 printf("FREE_SPACE_EXTENT");
 627                 break;
 628         case BTRFS_FREE_SPACE_BITMAP_KEY:
 629                 printf("FREE_SPACE_BITMAP");
 630                 break;
 631         case BTRFS_CHUNK_ITEM_KEY:
 632                 printf("CHUNK_ITEM");
 633                 break;
 634         case BTRFS_DEV_ITEM_KEY:
 635                 printf("DEV_ITEM");
 636                 break;
 637         case BTRFS_DEV_EXTENT_KEY:
 638                 printf("DEV_EXTENT");
 639                 break;
 640         case BTRFS_BALANCE_ITEM_KEY:
 641                 printf("BALANCE_ITEM");
 642                 break;
 643         case BTRFS_DEV_REPLACE_KEY:
 644                 printf("DEV_REPLACE");
 645                 break;
 646         case BTRFS_STRING_ITEM_KEY:
 647                 printf("STRING_ITEM");
 648                 break;
 649         case BTRFS_QGROUP_STATUS_KEY:
 650                 printf("QGROUP_STATUS");
 651                 break;
 652         case BTRFS_QGROUP_RELATION_KEY:
 653                 printf("QGROUP_RELATION");
 654                 break;
 655         case BTRFS_QGROUP_INFO_KEY:
 656                 printf("QGROUP_INFO");
 657                 break;
 658         case BTRFS_QGROUP_LIMIT_KEY:
 659                 printf("QGROUP_LIMIT");
 660                 break;
 661         case BTRFS_DEV_STATS_KEY:
 662                 printf("DEV_STATS");
 663                 break;
 664         case BTRFS_UUID_KEY_SUBVOL:
 665                 printf("UUID_KEY_SUBVOL");
 666                 break;
 667         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 668                 printf("UUID_KEY_RECEIVED_SUBVOL");
 669                 break;
 670         default:
 671                 printf("UNKNOWN.%d", type);
 672         };
 673 }
 674
 675 static void print_objectid(u64 objectid, u8 type)
 676 {
 677         switch (type) {
 678         case BTRFS_DEV_EXTENT_KEY:
 679                 printf("%llu", (unsigned long long)objectid); /* device id */
 680                 return;
 681         case BTRFS_QGROUP_RELATION_KEY:
 682                 printf("%llu/%llu", btrfs_qgroup_level(objectid),
 683                        btrfs_qgroup_subvid(objectid));
 684                 return;
 685         case BTRFS_UUID_KEY_SUBVOL:
 686         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 687                 printf("0x%016llx", (unsigned long long)objectid);
 688                 return;
 689         }
 690
 691         switch (objectid) {
 692         case BTRFS_ROOT_TREE_OBJECTID:
 693                 if (type == BTRFS_DEV_ITEM_KEY)
 694                         printf("DEV_ITEMS");
 695                 else
 696                         printf("ROOT_TREE");
 697                 break;
 698         case BTRFS_EXTENT_TREE_OBJECTID:
 699                 printf("EXTENT_TREE");
 700                 break;
 701         case BTRFS_CHUNK_TREE_OBJECTID:
 702                 printf("CHUNK_TREE");
 703                 break;
 704         case BTRFS_DEV_TREE_OBJECTID:
 705                 printf("DEV_TREE");
 706                 break;
 707         case BTRFS_FS_TREE_OBJECTID:
 708                 printf("FS_TREE");
 709                 break;
 710         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 711                 printf("ROOT_TREE_DIR");
 712                 break;
 713         case BTRFS_CSUM_TREE_OBJECTID:
 714                 printf("CSUM_TREE");
 715                 break;
 716         case BTRFS_BALANCE_OBJECTID:
 717                 printf("BALANCE");
 718                 break;
 719         case BTRFS_ORPHAN_OBJECTID:
 720                 printf("ORPHAN");
 721                 break;
 722         case BTRFS_TREE_LOG_OBJECTID:
 723                 printf("TREE_LOG");
 724                 break;
 725         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 726                 printf("LOG_FIXUP");
 727                 break;
 728         case BTRFS_TREE_RELOC_OBJECTID:
 729                 printf("TREE_RELOC");
 730                 break;
 731         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 732                 printf("DATA_RELOC_TREE");
 733                 break;
 734         case BTRFS_EXTENT_CSUM_OBJECTID:
 735                 printf("EXTENT_CSUM");
 736                 break;
 737         case BTRFS_FREE_SPACE_OBJECTID:
 738                 printf("FREE_SPACE");
 739                 break;
 740         case BTRFS_FREE_INO_OBJECTID:
 741                 printf("FREE_INO");
 742                 break;
 743         case BTRFS_QUOTA_TREE_OBJECTID:
 744                 printf("QUOTA_TREE");
 745                 break;
 746         case BTRFS_UUID_TREE_OBJECTID:
 747                 printf("UUID_TREE");
 748                 break;
 749         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 750                 printf("FREE_SPACE_TREE");
 751                 break;
 752         case BTRFS_MULTIPLE_OBJECTIDS:
 753                 printf("MULTIPLE");
 754                 break;
 755         case (u64)-1:
 756                 printf("-1");
 757                 break;
 758         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 759                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 760                         printf("FIRST_CHUNK_TREE");
 761                         break;
 762                 }
 763                 /* fall-thru */
 764         default:
 765                 printf("%llu", (unsigned long long)objectid);
 766         }
 767 }
 768
 769 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 770 {
 771         u64 objectid = btrfs_disk_key_objectid(disk_key);
 772         u8 type = btrfs_disk_key_type(disk_key);
 773         u64 offset = btrfs_disk_key_offset(disk_key);
 774
 775         printf("key (");
 776         print_objectid(objectid, type);
 777         printf(" ");
 778         print_key_type(objectid, type);
 779         switch (type) {
 780         case BTRFS_QGROUP_RELATION_KEY:
 781         case BTRFS_QGROUP_INFO_KEY:
 782         case BTRFS_QGROUP_LIMIT_KEY:
 783                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 784                        btrfs_qgroup_subvid(offset));
 785                 break;
 786         case BTRFS_UUID_KEY_SUBVOL:
 787         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 788                 printf(" 0x%016llx)", (unsigned long long)offset);
 789                 break;
 790         default:
 791                 if (offset == (u64)-1)
 792                         printf(" -1)");
 793                 else
 794                         printf(" %llu)", (unsigned long long)offset);
 795                 break;
 796         }
 797 }
 798
 799 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 800                             u32 item_size)
 801 {
 802         if (item_size & (sizeof(u64) - 1)) {
 803                 printf("btrfs: uuid item with illegal size %lu!\n",
 804                        (unsigned long)item_size);
 805                 return;
 806         }
 807         while (item_size) {
 808                 __le64 subvol_id;
 809
 810                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 811                 printf("\t\tsubvol_id %llu\n",
 812                         (unsigned long long)le64_to_cpu(subvol_id));
 813                 item_size -= sizeof(u64);
 814                 offset += sizeof(u64);
 815         }
 816 }
 817
 818 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 819 {
 820         int i;
 821         char *str;
 822         struct btrfs_item *item;
 823         struct btrfs_dir_item *di;
 824         struct btrfs_inode_item *ii;
 825         struct btrfs_file_extent_item *fi;
 826         struct btrfs_block_group_item *bi;
 827         struct btrfs_extent_data_ref *dref;
 828         struct btrfs_shared_data_ref *sref;
 829         struct btrfs_inode_ref *iref;
 830         struct btrfs_inode_extref *iref2;
 831         struct btrfs_dev_extent *dev_extent;
 832         struct btrfs_disk_key disk_key;
 833         struct btrfs_block_group_item bg_item;
 834         struct btrfs_free_space_info *free_info;
 835         struct btrfs_dir_log_item *dlog;
 836         struct btrfs_qgroup_info_item *qg_info;
 837         struct btrfs_qgroup_limit_item *qg_limit;
 838         struct btrfs_qgroup_status_item *qg_status;
 839         u32 nr = btrfs_header_nritems(l);
 840         u64 objectid;
 841         u32 type;
 842         char flags_str[32];
 843
 844         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 845                 (unsigned long long)btrfs_header_bytenr(l), nr,
 846                 btrfs_leaf_free_space(root, l),
 847                 (unsigned long long)btrfs_header_generation(l),
 848                 (unsigned long long)btrfs_header_owner(l));
 849         print_uuids(l);
 850         fflush(stdout);
 851         for (i = 0 ; i < nr ; i++) {
 852                 item = btrfs_item_nr(i);
 853                 btrfs_item_key(l, &disk_key, i);
 854                 objectid = btrfs_disk_key_objectid(&disk_key);
 855                 type = btrfs_disk_key_type(&disk_key);
 856                 printf("\titem %d ", i);
 857                 btrfs_print_key(&disk_key);
 858                 printf(" itemoff %d itemsize %d\n",
 859                         btrfs_item_offset(l, item),
 860                         btrfs_item_size(l, item));
 861
 862                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
 863                         print_free_space_header(l, i);
 864
 865                 switch (type) {
 866                 case BTRFS_INODE_ITEM_KEY:
 867                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
 868                         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 869                                "\t\tblock group %llu mode %o links %u uid %u gid %u\n"
 870                                "\t\trdev %llu flags 0x%llx\n",
 871                                (unsigned long long)btrfs_inode_generation(l, ii),
 872                                (unsigned long long)btrfs_inode_transid(l, ii),
 873                                (unsigned long long)btrfs_inode_size(l, ii),
 874                                (unsigned long long)btrfs_inode_nbytes(l, ii),
 875                                (unsigned long long)btrfs_inode_block_group(l,ii),
 876                                btrfs_inode_mode(l, ii),
 877                                btrfs_inode_nlink(l, ii),
 878                                btrfs_inode_uid(l, ii),
 879                                btrfs_inode_gid(l, ii),
 880                                (unsigned long long)btrfs_inode_rdev(l,ii),
 881                                (unsigned long long)btrfs_inode_flags(l,ii));
 882                         break;
 883                 case BTRFS_INODE_REF_KEY:
 884                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
 885                         print_inode_ref_item(l, item, iref);
 886                         break;
 887                 case BTRFS_INODE_EXTREF_KEY:
 888                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
 889                         print_inode_extref_item(l, item, iref2);
 890                         break;
 891                 case BTRFS_DIR_ITEM_KEY:
 892                 case BTRFS_DIR_INDEX_KEY:
 893                 case BTRFS_XATTR_ITEM_KEY:
 894                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
 895                         print_dir_item(l, item, di);
 896                         break;
 897                 case BTRFS_DIR_LOG_INDEX_KEY:
 898                 case BTRFS_DIR_LOG_ITEM_KEY:
 899                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
 900                         printf("\t\tdir log end %Lu\n",
 901                                (unsigned long long)btrfs_dir_log_end(l, dlog));
 902                        break;
 903                 case BTRFS_ORPHAN_ITEM_KEY:
 904                         printf("\t\torphan item\n");
 905                         break;
 906                 case BTRFS_ROOT_ITEM_KEY:
 907                         print_root(l, i);
 908                         break;
 909                 case BTRFS_ROOT_REF_KEY:
 910                         print_root_ref(l, i, "ref");
 911                         break;
 912                 case BTRFS_ROOT_BACKREF_KEY:
 913                         print_root_ref(l, i, "backref");
 914                         break;
 915                 case BTRFS_EXTENT_ITEM_KEY:
 916                         print_extent_item(l, i, 0);
 917                         break;
 918                 case BTRFS_METADATA_ITEM_KEY:
 919                         print_extent_item(l, i, 1);
 920                         break;
 921                 case BTRFS_TREE_BLOCK_REF_KEY:
 922                         printf("\t\ttree block backref\n");
 923                         break;
 924                 case BTRFS_SHARED_BLOCK_REF_KEY:
 925                         printf("\t\tshared block backref\n");
 926                         break;
 927                 case BTRFS_EXTENT_DATA_REF_KEY:
 928                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
 929                         printf("\t\textent data backref root %llu "
 930                                "objectid %llu offset %llu count %u\n",
 931                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
 932                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
 933                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
 934                                btrfs_extent_data_ref_count(l, dref));
 935                         break;
 936                 case BTRFS_SHARED_DATA_REF_KEY:
 937                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
 938                         printf("\t\tshared data backref count %u\n",
 939                                btrfs_shared_data_ref_count(l, sref));
 940                         break;
 941                 case BTRFS_EXTENT_REF_V0_KEY:
 942 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 943                         print_extent_ref_v0(l, i);
 944 #else
 945                         BUG();
 946 #endif
 947                         break;
 948                 case BTRFS_CSUM_ITEM_KEY:
 949                         printf("\t\tcsum item\n");
 950                         break;
 951                 case BTRFS_EXTENT_CSUM_KEY:
 952                         printf("\t\textent csum item\n");
 953                         break;
 954                 case BTRFS_EXTENT_DATA_KEY:
 955                         fi = btrfs_item_ptr(l, i,
 956                                             struct btrfs_file_extent_item);
 957                         print_file_extent_item(l, item, i, fi);
 958                         break;
 959                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
 960                         bi = btrfs_item_ptr(l, i,
 961                                             struct btrfs_block_group_item);
 962                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
 963                                            sizeof(bg_item));
 964                         memset(flags_str, 0, sizeof(flags_str));
 965                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
 966                                         flags_str);
 967                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
 968                                (unsigned long long)btrfs_block_group_used(&bg_item),
 969                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
 970                                flags_str);
 971                         break;
 972                 case BTRFS_FREE_SPACE_INFO_KEY:
 973                         free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
 974                         printf("\t\tfree space info extent count %u flags %u\n",
 975                                (unsigned)btrfs_free_space_extent_count(l, free_info),
 976                                (unsigned)btrfs_free_space_flags(l, free_info));
 977                         break;
 978                 case BTRFS_FREE_SPACE_EXTENT_KEY:
 979                         printf("\t\tfree space extent\n");
 980                         break;
 981                 case BTRFS_FREE_SPACE_BITMAP_KEY:
 982                         printf("\t\tfree space bitmap\n");
 983                         break;
 984                 case BTRFS_CHUNK_ITEM_KEY:
 985                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
 986                         break;
 987                 case BTRFS_DEV_ITEM_KEY:
 988                         print_dev_item(l, btrfs_item_ptr(l, i,
 989                                         struct btrfs_dev_item));
 990                         break;
 991                 case BTRFS_DEV_EXTENT_KEY:
 992                         dev_extent = btrfs_item_ptr(l, i,
 993                                                     struct btrfs_dev_extent);
 994                         printf("\t\tdev extent chunk_tree %llu\n"
 995                                "\t\tchunk objectid %llu chunk offset %llu "
 996                                "length %llu\n",
 997                                (unsigned long long)
 998                                btrfs_dev_extent_chunk_tree(l, dev_extent),
 999                                (unsigned long long)
1000                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
1001                                (unsigned long long)
1002                                btrfs_dev_extent_chunk_offset(l, dev_extent),
1003                                (unsigned long long)
1004                                btrfs_dev_extent_length(l, dev_extent));
1005                         break;
1006                 case BTRFS_QGROUP_STATUS_KEY:
1007                         qg_status = btrfs_item_ptr(l, i,
1008                                         struct btrfs_qgroup_status_item);
1009                         memset(flags_str, 0, sizeof(flags_str));
1010                         qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
1011                                         flags_str);
1012                         printf("\t\tversion %llu generation %llu flags %s "
1013                                 "scan %lld\n",
1014                                 (unsigned long long)
1015                                 btrfs_qgroup_status_version(l, qg_status),
1016                                 (unsigned long long)
1017                                 btrfs_qgroup_status_generation(l, qg_status),
1018                                 flags_str,
1019                                 (unsigned long long)
1020                                 btrfs_qgroup_status_scan(l, qg_status));
1021                         break;
1022                 case BTRFS_QGROUP_RELATION_KEY:
1023                         break;
1024                 case BTRFS_QGROUP_INFO_KEY:
1025                         qg_info = btrfs_item_ptr(l, i,
1026                                                  struct btrfs_qgroup_info_item);
1027                         printf("\t\tgeneration %llu\n"
1028                              "\t\treferenced %llu referenced compressed %llu\n"
1029                              "\t\texclusive %llu exclusive compressed %llu\n",
1030                                (unsigned long long)
1031                                btrfs_qgroup_info_generation(l, qg_info),
1032                                (unsigned long long)
1033                                btrfs_qgroup_info_referenced(l, qg_info),
1034                                (unsigned long long)
1035                                btrfs_qgroup_info_referenced_compressed(l,
1036                                                                        qg_info),
1037                                (unsigned long long)
1038                                btrfs_qgroup_info_exclusive(l, qg_info),
1039                                (unsigned long long)
1040                                btrfs_qgroup_info_exclusive_compressed(l,
1041                                                                       qg_info));
1042                         break;
1043                 case BTRFS_QGROUP_LIMIT_KEY:
1044                         qg_limit = btrfs_item_ptr(l, i,
1045                                          struct btrfs_qgroup_limit_item);
1046                         printf("\t\tflags %llx\n"
1047                              "\t\tmax referenced %lld max exclusive %lld\n"
1048                              "\t\trsv referenced %lld rsv exclusive %lld\n",
1049                                (unsigned long long)
1050                                btrfs_qgroup_limit_flags(l, qg_limit),
1051                                (long long)
1052                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
1053                                (long long)
1054                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
1055                                (long long)
1056                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
1057                                (long long)
1058                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
1059                         break;
1060                 case BTRFS_UUID_KEY_SUBVOL:
1061                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1062                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
1063                                         btrfs_item_size_nr(l, i));
1064                         break;
1065                 case BTRFS_STRING_ITEM_KEY:
1066                         /* dirty, but it's simple */
1067                         str = l->data + btrfs_item_ptr_offset(l, i);
1068                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
1069                         break;
1070                 case BTRFS_DEV_STATS_KEY:
1071                         printf("\t\tdevice stats\n");
1072                         break;
1073                 };
1074                 fflush(stdout);
1075         }
1076 }
1077
1078 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1079 {
1080         int i;
1081         u32 nr;
1082         u32 size;
1083         struct btrfs_disk_key disk_key;
1084         struct btrfs_key key;
1085
1086         if (!eb)
1087                 return;
1088         nr = btrfs_header_nritems(eb);
1089         if (btrfs_is_leaf(eb)) {
1090                 btrfs_print_leaf(root, eb);
1091                 return;
1092         }
1093         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1094                (unsigned long long)eb->start,
1095                 btrfs_header_level(eb), nr,
1096                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1097                 (unsigned long long)btrfs_header_generation(eb),
1098                 (unsigned long long)btrfs_header_owner(eb));
1099         print_uuids(eb);
1100         fflush(stdout);
1101         size = btrfs_level_size(root, btrfs_header_level(eb) - 1);
1102         for (i = 0; i < nr; i++) {
1103                 u64 blocknr = btrfs_node_blockptr(eb, i);
1104                 btrfs_node_key(eb, &disk_key, i);
1105                 btrfs_disk_key_to_cpu(&key, &disk_key);
1106                 printf("\t");
1107                 btrfs_print_key(&disk_key);
1108                 printf(" block %llu (%llu) gen %llu\n",
1109                        (unsigned long long)blocknr,
1110                        (unsigned long long)blocknr / size,
1111                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1112                 fflush(stdout);
1113         }
1114         if (!follow)
1115                 return;
1116
1117         for (i = 0; i < nr; i++) {
1118                 struct extent_buffer *next = read_tree_block(root,
1119                                              btrfs_node_blockptr(eb, i),
1120                                              size,
1121                                              btrfs_node_ptr_generation(eb, i));
1122                 if (!extent_buffer_uptodate(next)) {
1123                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1124                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1125                                 (unsigned long long)btrfs_header_owner(eb));
1126                         continue;
1127                 }
1128                 if (btrfs_is_leaf(next) &&
1129                     btrfs_header_level(eb) != 1)
1130                         BUG();
1131                 if (btrfs_header_level(next) !=
1132                         btrfs_header_level(eb) - 1)
1133                         BUG();
1134                 btrfs_print_tree(root, next, 1);
1135                 free_extent_buffer(next);
1136         }
1137 }