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 compress_type_to_str(u8 compress_type, char *ret)
 289 {
 290         switch (compress_type) {
 291         case BTRFS_COMPRESS_NONE:
 292                 strcpy(ret, "none");
 293                 break;
 294         case BTRFS_COMPRESS_ZLIB:
 295                 strcpy(ret, "zlib");
 296                 break;
 297         case BTRFS_COMPRESS_LZO:
 298                 strcpy(ret, "lzo");
 299                 break;
 300         default:
 301                 sprintf(ret, "UNKNOWN.%d", compress_type);
 302         }
 303 }
 304
 305 static void print_file_extent_item(struct extent_buffer *eb,
 306                                    struct btrfs_item *item,
 307                                    int slot,
 308                                    struct btrfs_file_extent_item *fi)
 309 {
 310         int extent_type = btrfs_file_extent_type(eb, fi);
 311         char compress_str[16];
 312
 313         compress_type_to_str(btrfs_file_extent_compression(eb, fi),
 314                              compress_str);
 315
 316         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 317                 printf("\t\tinline extent data size %u "
 318                        "ram %u compress(%s)\n",
 319                   btrfs_file_extent_inline_item_len(eb, item),
 320                   btrfs_file_extent_inline_len(eb, slot, fi),
 321                   compress_str);
 322                 return;
 323         }
 324         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 325                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 326                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 327                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 328                 printf("\t\tprealloc data offset %llu nr %llu\n",
 329                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 330                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 331                 return;
 332         }
 333         printf("\t\textent data disk byte %llu nr %llu\n",
 334                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 335                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 336         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 337                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 338                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 339                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 340         printf("\t\textent compression(%s)\n", compress_str);
 341 }
 342
 343 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 344 static void extent_flags_to_str(u64 flags, char *ret)
 345 {
 346         int empty = 1;
 347
 348         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 349                 empty = 0;
 350                 strcpy(ret, "DATA");
 351         }
 352         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 353                 if (!empty) {
 354                         empty = 0;
 355                         strcat(ret, "|");
 356                 }
 357                 strcat(ret, "TREE_BLOCK");
 358         }
 359         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 360                 strcat(ret, "|");
 361                 strcat(ret, "FULL_BACKREF");
 362         }
 363 }
 364
 365 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 366 {
 367         struct btrfs_extent_item *ei;
 368         struct btrfs_extent_inline_ref *iref;
 369         struct btrfs_extent_data_ref *dref;
 370         struct btrfs_shared_data_ref *sref;
 371         struct btrfs_disk_key key;
 372         unsigned long end;
 373         unsigned long ptr;
 374         int type;
 375         u32 item_size = btrfs_item_size_nr(eb, slot);
 376         u64 flags;
 377         u64 offset;
 378         char flags_str[32] = {0};
 379
 380         if (item_size < sizeof(*ei)) {
 381 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 382                 struct btrfs_extent_item_v0 *ei0;
 383                 BUG_ON(item_size != sizeof(*ei0));
 384                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 385                 printf("\t\textent refs %u\n",
 386                        btrfs_extent_refs_v0(eb, ei0));
 387                 return;
 388 #else
 389                 BUG();
 390 #endif
 391         }
 392
 393         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 394         flags = btrfs_extent_flags(eb, ei);
 395         extent_flags_to_str(flags, flags_str);
 396
 397         printf("\t\textent refs %llu gen %llu flags %s\n",
 398                (unsigned long long)btrfs_extent_refs(eb, ei),
 399                (unsigned long long)btrfs_extent_generation(eb, ei),
 400                flags_str);
 401
 402         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 403                 struct btrfs_tree_block_info *info;
 404                 info = (struct btrfs_tree_block_info *)(ei + 1);
 405                 btrfs_tree_block_key(eb, info, &key);
 406                 printf("\t\ttree block ");
 407                 btrfs_print_key(&key);
 408                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 409                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 410         } else if (metadata) {
 411                 struct btrfs_key tmp;
 412
 413                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 414                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 415                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 416         } else{
 417                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 418         }
 419
 420         ptr = (unsigned long)iref;
 421         end = (unsigned long)ei + item_size;
 422         while (ptr < end) {
 423                 iref = (struct btrfs_extent_inline_ref *)ptr;
 424                 type = btrfs_extent_inline_ref_type(eb, iref);
 425                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 426                 switch (type) {
 427                 case BTRFS_TREE_BLOCK_REF_KEY:
 428                         printf("\t\ttree block backref root %llu\n",
 429                                (unsigned long long)offset);
 430                         break;
 431                 case BTRFS_SHARED_BLOCK_REF_KEY:
 432                         printf("\t\tshared block backref parent %llu\n",
 433                                (unsigned long long)offset);
 434                         break;
 435                 case BTRFS_EXTENT_DATA_REF_KEY:
 436                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 437                         printf("\t\textent data backref root %llu "
 438                                "objectid %llu offset %llu count %u\n",
 439                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 440                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 441                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 442                                btrfs_extent_data_ref_count(eb, dref));
 443                         break;
 444                 case BTRFS_SHARED_DATA_REF_KEY:
 445                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 446                         printf("\t\tshared data backref parent %llu count %u\n",
 447                                (unsigned long long)offset,
 448                                btrfs_shared_data_ref_count(eb, sref));
 449                         break;
 450                 default:
 451                         return;
 452                 }
 453                 ptr += btrfs_extent_inline_ref_size(type);
 454         }
 455         WARN_ON(ptr > end);
 456 }
 457
 458 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 459 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 460 {
 461         struct btrfs_extent_ref_v0 *ref0;
 462
 463         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 464         printf("\t\textent back ref root %llu gen %llu "
 465                 "owner %llu num_refs %lu\n",
 466                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 467                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 468                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 469                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 470 }
 471 #endif
 472
 473 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 474 {
 475         struct btrfs_root_ref *ref;
 476         char namebuf[BTRFS_NAME_LEN];
 477         int namelen;
 478
 479         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 480         namelen = btrfs_root_ref_name_len(leaf, ref);
 481         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 482         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 483                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 484                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 485                namelen, namebuf);
 486 }
 487
 488 static int count_bytes(void *buf, int len, char b)
 489 {
 490         int cnt = 0;
 491         int i;
 492         for (i = 0; i < len; i++) {
 493                 if (((char*)buf)[i] == b)
 494                         cnt++;
 495         }
 496         return cnt;
 497 }
 498
 499 static void print_root(struct extent_buffer *leaf, int slot)
 500 {
 501         struct btrfs_root_item *ri;
 502         struct btrfs_root_item root_item;
 503         int len;
 504         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 505
 506         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 507         len = btrfs_item_size_nr(leaf, slot);
 508
 509         memset(&root_item, 0, sizeof(root_item));
 510         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 511
 512         printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %llu\n",
 513                 (unsigned long long)btrfs_root_bytenr(&root_item),
 514                 btrfs_root_level(&root_item),
 515                 (unsigned long long)btrfs_root_dirid(&root_item),
 516                 btrfs_root_refs(&root_item),
 517                 (unsigned long long)btrfs_root_generation(&root_item),
 518                 (unsigned long long)btrfs_root_last_snapshot(&root_item));
 519
 520         if (root_item.generation == root_item.generation_v2) {
 521                 uuid_unparse(root_item.uuid, uuid_str);
 522                 printf("\t\tuuid %s\n", uuid_str);
 523                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 524                         uuid_unparse(root_item.parent_uuid, uuid_str);
 525                         printf("\t\tparent_uuid %s\n", uuid_str);
 526                 }
 527                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 528                         uuid_unparse(root_item.received_uuid, uuid_str);
 529                         printf("\t\treceived_uuid %s\n", uuid_str);
 530                 }
 531                 if (root_item.ctransid) {
 532                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 533                                 btrfs_root_ctransid(&root_item),
 534                                 btrfs_root_otransid(&root_item),
 535                                 btrfs_root_stransid(&root_item),
 536                                 btrfs_root_rtransid(&root_item));
 537                 }
 538         }
 539         if (btrfs_root_refs(&root_item) == 0) {
 540                 struct btrfs_key drop_key;
 541                 btrfs_disk_key_to_cpu(&drop_key,
 542                                       &root_item.drop_progress);
 543                 printf("\t\tdrop ");
 544                 btrfs_print_key(&root_item.drop_progress);
 545                 printf(" level %d\n", root_item.drop_level);
 546         }
 547 }
 548
 549 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 550 {
 551         struct btrfs_free_space_header *header;
 552         struct btrfs_disk_key location;
 553
 554         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 555         btrfs_free_space_key(leaf, header, &location);
 556         printf("\t\tlocation ");
 557         btrfs_print_key(&location);
 558         printf("\n");
 559         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 560                (unsigned long long)btrfs_free_space_generation(leaf, header),
 561                (unsigned long long)btrfs_free_space_entries(leaf, header),
 562                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 563 }
 564
 565 static void print_key_type(u64 objectid, u8 type)
 566 {
 567         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 568                 printf("UNTYPED");
 569                 return;
 570         }
 571
 572         switch (type) {
 573         case BTRFS_INODE_ITEM_KEY:
 574                 printf("INODE_ITEM");
 575                 break;
 576         case BTRFS_INODE_REF_KEY:
 577                 printf("INODE_REF");
 578                 break;
 579         case BTRFS_INODE_EXTREF_KEY:
 580                 printf("INODE_EXTREF");
 581                 break;
 582         case BTRFS_DIR_ITEM_KEY:
 583                 printf("DIR_ITEM");
 584                 break;
 585         case BTRFS_DIR_INDEX_KEY:
 586                 printf("DIR_INDEX");
 587                 break;
 588         case BTRFS_DIR_LOG_ITEM_KEY:
 589                 printf("DIR_LOG_ITEM");
 590                 break;
 591         case BTRFS_DIR_LOG_INDEX_KEY:
 592                 printf("DIR_LOG_INDEX");
 593                 break;
 594         case BTRFS_XATTR_ITEM_KEY:
 595                 printf("XATTR_ITEM");
 596                 break;
 597         case BTRFS_ORPHAN_ITEM_KEY:
 598                 printf("ORPHAN_ITEM");
 599                 break;
 600         case BTRFS_ROOT_ITEM_KEY:
 601                 printf("ROOT_ITEM");
 602                 break;
 603         case BTRFS_ROOT_REF_KEY:
 604                 printf("ROOT_REF");
 605                 break;
 606         case BTRFS_ROOT_BACKREF_KEY:
 607                 printf("ROOT_BACKREF");
 608                 break;
 609         case BTRFS_EXTENT_ITEM_KEY:
 610                 printf("EXTENT_ITEM");
 611                 break;
 612         case BTRFS_METADATA_ITEM_KEY:
 613                 printf("METADATA_ITEM");
 614                 break;
 615         case BTRFS_TREE_BLOCK_REF_KEY:
 616                 printf("TREE_BLOCK_REF");
 617                 break;
 618         case BTRFS_SHARED_BLOCK_REF_KEY:
 619                 printf("SHARED_BLOCK_REF");
 620                 break;
 621         case BTRFS_EXTENT_DATA_REF_KEY:
 622                 printf("EXTENT_DATA_REF");
 623                 break;
 624         case BTRFS_SHARED_DATA_REF_KEY:
 625                 printf("SHARED_DATA_REF");
 626                 break;
 627         case BTRFS_EXTENT_REF_V0_KEY:
 628                 printf("EXTENT_REF_V0");
 629                 break;
 630         case BTRFS_CSUM_ITEM_KEY:
 631                 printf("CSUM_ITEM");
 632                 break;
 633         case BTRFS_EXTENT_CSUM_KEY:
 634                 printf("EXTENT_CSUM");
 635                 break;
 636         case BTRFS_EXTENT_DATA_KEY:
 637                 printf("EXTENT_DATA");
 638                 break;
 639         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 640                 printf("BLOCK_GROUP_ITEM");
 641                 break;
 642         case BTRFS_FREE_SPACE_INFO_KEY:
 643                 printf("FREE_SPACE_INFO");
 644                 break;
 645         case BTRFS_FREE_SPACE_EXTENT_KEY:
 646                 printf("FREE_SPACE_EXTENT");
 647                 break;
 648         case BTRFS_FREE_SPACE_BITMAP_KEY:
 649                 printf("FREE_SPACE_BITMAP");
 650                 break;
 651         case BTRFS_CHUNK_ITEM_KEY:
 652                 printf("CHUNK_ITEM");
 653                 break;
 654         case BTRFS_DEV_ITEM_KEY:
 655                 printf("DEV_ITEM");
 656                 break;
 657         case BTRFS_DEV_EXTENT_KEY:
 658                 printf("DEV_EXTENT");
 659                 break;
 660         case BTRFS_BALANCE_ITEM_KEY:
 661                 printf("BALANCE_ITEM");
 662                 break;
 663         case BTRFS_DEV_REPLACE_KEY:
 664                 printf("DEV_REPLACE");
 665                 break;
 666         case BTRFS_STRING_ITEM_KEY:
 667                 printf("STRING_ITEM");
 668                 break;
 669         case BTRFS_QGROUP_STATUS_KEY:
 670                 printf("QGROUP_STATUS");
 671                 break;
 672         case BTRFS_QGROUP_RELATION_KEY:
 673                 printf("QGROUP_RELATION");
 674                 break;
 675         case BTRFS_QGROUP_INFO_KEY:
 676                 printf("QGROUP_INFO");
 677                 break;
 678         case BTRFS_QGROUP_LIMIT_KEY:
 679                 printf("QGROUP_LIMIT");
 680                 break;
 681         case BTRFS_DEV_STATS_KEY:
 682                 printf("DEV_STATS");
 683                 break;
 684         case BTRFS_UUID_KEY_SUBVOL:
 685                 printf("UUID_KEY_SUBVOL");
 686                 break;
 687         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 688                 printf("UUID_KEY_RECEIVED_SUBVOL");
 689                 break;
 690         default:
 691                 printf("UNKNOWN.%d", type);
 692         };
 693 }
 694
 695 static void print_objectid(u64 objectid, u8 type)
 696 {
 697         switch (type) {
 698         case BTRFS_DEV_EXTENT_KEY:
 699                 printf("%llu", (unsigned long long)objectid); /* device id */
 700                 return;
 701         case BTRFS_QGROUP_RELATION_KEY:
 702                 printf("%llu/%llu", btrfs_qgroup_level(objectid),
 703                        btrfs_qgroup_subvid(objectid));
 704                 return;
 705         case BTRFS_UUID_KEY_SUBVOL:
 706         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 707                 printf("0x%016llx", (unsigned long long)objectid);
 708                 return;
 709         }
 710
 711         switch (objectid) {
 712         case BTRFS_ROOT_TREE_OBJECTID:
 713                 if (type == BTRFS_DEV_ITEM_KEY)
 714                         printf("DEV_ITEMS");
 715                 else
 716                         printf("ROOT_TREE");
 717                 break;
 718         case BTRFS_EXTENT_TREE_OBJECTID:
 719                 printf("EXTENT_TREE");
 720                 break;
 721         case BTRFS_CHUNK_TREE_OBJECTID:
 722                 printf("CHUNK_TREE");
 723                 break;
 724         case BTRFS_DEV_TREE_OBJECTID:
 725                 printf("DEV_TREE");
 726                 break;
 727         case BTRFS_FS_TREE_OBJECTID:
 728                 printf("FS_TREE");
 729                 break;
 730         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 731                 printf("ROOT_TREE_DIR");
 732                 break;
 733         case BTRFS_CSUM_TREE_OBJECTID:
 734                 printf("CSUM_TREE");
 735                 break;
 736         case BTRFS_BALANCE_OBJECTID:
 737                 printf("BALANCE");
 738                 break;
 739         case BTRFS_ORPHAN_OBJECTID:
 740                 printf("ORPHAN");
 741                 break;
 742         case BTRFS_TREE_LOG_OBJECTID:
 743                 printf("TREE_LOG");
 744                 break;
 745         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 746                 printf("LOG_FIXUP");
 747                 break;
 748         case BTRFS_TREE_RELOC_OBJECTID:
 749                 printf("TREE_RELOC");
 750                 break;
 751         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 752                 printf("DATA_RELOC_TREE");
 753                 break;
 754         case BTRFS_EXTENT_CSUM_OBJECTID:
 755                 printf("EXTENT_CSUM");
 756                 break;
 757         case BTRFS_FREE_SPACE_OBJECTID:
 758                 printf("FREE_SPACE");
 759                 break;
 760         case BTRFS_FREE_INO_OBJECTID:
 761                 printf("FREE_INO");
 762                 break;
 763         case BTRFS_QUOTA_TREE_OBJECTID:
 764                 printf("QUOTA_TREE");
 765                 break;
 766         case BTRFS_UUID_TREE_OBJECTID:
 767                 printf("UUID_TREE");
 768                 break;
 769         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 770                 printf("FREE_SPACE_TREE");
 771                 break;
 772         case BTRFS_MULTIPLE_OBJECTIDS:
 773                 printf("MULTIPLE");
 774                 break;
 775         case (u64)-1:
 776                 printf("-1");
 777                 break;
 778         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 779                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 780                         printf("FIRST_CHUNK_TREE");
 781                         break;
 782                 }
 783                 /* fall-thru */
 784         default:
 785                 printf("%llu", (unsigned long long)objectid);
 786         }
 787 }
 788
 789 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 790 {
 791         u64 objectid = btrfs_disk_key_objectid(disk_key);
 792         u8 type = btrfs_disk_key_type(disk_key);
 793         u64 offset = btrfs_disk_key_offset(disk_key);
 794
 795         printf("key (");
 796         print_objectid(objectid, type);
 797         printf(" ");
 798         print_key_type(objectid, type);
 799         switch (type) {
 800         case BTRFS_QGROUP_RELATION_KEY:
 801         case BTRFS_QGROUP_INFO_KEY:
 802         case BTRFS_QGROUP_LIMIT_KEY:
 803                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 804                        btrfs_qgroup_subvid(offset));
 805                 break;
 806         case BTRFS_UUID_KEY_SUBVOL:
 807         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 808                 printf(" 0x%016llx)", (unsigned long long)offset);
 809                 break;
 810         default:
 811                 if (offset == (u64)-1)
 812                         printf(" -1)");
 813                 else
 814                         printf(" %llu)", (unsigned long long)offset);
 815                 break;
 816         }
 817 }
 818
 819 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 820                             u32 item_size)
 821 {
 822         if (item_size & (sizeof(u64) - 1)) {
 823                 printf("btrfs: uuid item with illegal size %lu!\n",
 824                        (unsigned long)item_size);
 825                 return;
 826         }
 827         while (item_size) {
 828                 __le64 subvol_id;
 829
 830                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 831                 printf("\t\tsubvol_id %llu\n",
 832                         (unsigned long long)le64_to_cpu(subvol_id));
 833                 item_size -= sizeof(u64);
 834                 offset += sizeof(u64);
 835         }
 836 }
 837
 838 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 839 {
 840         int i;
 841         char *str;
 842         struct btrfs_item *item;
 843         struct btrfs_dir_item *di;
 844         struct btrfs_inode_item *ii;
 845         struct btrfs_file_extent_item *fi;
 846         struct btrfs_block_group_item *bi;
 847         struct btrfs_extent_data_ref *dref;
 848         struct btrfs_shared_data_ref *sref;
 849         struct btrfs_inode_ref *iref;
 850         struct btrfs_inode_extref *iref2;
 851         struct btrfs_dev_extent *dev_extent;
 852         struct btrfs_disk_key disk_key;
 853         struct btrfs_block_group_item bg_item;
 854         struct btrfs_free_space_info *free_info;
 855         struct btrfs_dir_log_item *dlog;
 856         struct btrfs_qgroup_info_item *qg_info;
 857         struct btrfs_qgroup_limit_item *qg_limit;
 858         struct btrfs_qgroup_status_item *qg_status;
 859         u32 nr = btrfs_header_nritems(l);
 860         u64 objectid;
 861         u32 type;
 862         char flags_str[32];
 863
 864         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 865                 (unsigned long long)btrfs_header_bytenr(l), nr,
 866                 btrfs_leaf_free_space(root, l),
 867                 (unsigned long long)btrfs_header_generation(l),
 868                 (unsigned long long)btrfs_header_owner(l));
 869         print_uuids(l);
 870         fflush(stdout);
 871         for (i = 0 ; i < nr ; i++) {
 872                 item = btrfs_item_nr(i);
 873                 btrfs_item_key(l, &disk_key, i);
 874                 objectid = btrfs_disk_key_objectid(&disk_key);
 875                 type = btrfs_disk_key_type(&disk_key);
 876                 printf("\titem %d ", i);
 877                 btrfs_print_key(&disk_key);
 878                 printf(" itemoff %d itemsize %d\n",
 879                         btrfs_item_offset(l, item),
 880                         btrfs_item_size(l, item));
 881
 882                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
 883                         print_free_space_header(l, i);
 884
 885                 switch (type) {
 886                 case BTRFS_INODE_ITEM_KEY:
 887                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
 888                         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 889                                "\t\tblock group %llu mode %o links %u uid %u gid %u\n"
 890                                "\t\trdev %llu flags 0x%llx\n",
 891                                (unsigned long long)btrfs_inode_generation(l, ii),
 892                                (unsigned long long)btrfs_inode_transid(l, ii),
 893                                (unsigned long long)btrfs_inode_size(l, ii),
 894                                (unsigned long long)btrfs_inode_nbytes(l, ii),
 895                                (unsigned long long)btrfs_inode_block_group(l,ii),
 896                                btrfs_inode_mode(l, ii),
 897                                btrfs_inode_nlink(l, ii),
 898                                btrfs_inode_uid(l, ii),
 899                                btrfs_inode_gid(l, ii),
 900                                (unsigned long long)btrfs_inode_rdev(l,ii),
 901                                (unsigned long long)btrfs_inode_flags(l,ii));
 902                         break;
 903                 case BTRFS_INODE_REF_KEY:
 904                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
 905                         print_inode_ref_item(l, item, iref);
 906                         break;
 907                 case BTRFS_INODE_EXTREF_KEY:
 908                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
 909                         print_inode_extref_item(l, item, iref2);
 910                         break;
 911                 case BTRFS_DIR_ITEM_KEY:
 912                 case BTRFS_DIR_INDEX_KEY:
 913                 case BTRFS_XATTR_ITEM_KEY:
 914                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
 915                         print_dir_item(l, item, di);
 916                         break;
 917                 case BTRFS_DIR_LOG_INDEX_KEY:
 918                 case BTRFS_DIR_LOG_ITEM_KEY:
 919                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
 920                         printf("\t\tdir log end %Lu\n",
 921                                (unsigned long long)btrfs_dir_log_end(l, dlog));
 922                        break;
 923                 case BTRFS_ORPHAN_ITEM_KEY:
 924                         printf("\t\torphan item\n");
 925                         break;
 926                 case BTRFS_ROOT_ITEM_KEY:
 927                         print_root(l, i);
 928                         break;
 929                 case BTRFS_ROOT_REF_KEY:
 930                         print_root_ref(l, i, "ref");
 931                         break;
 932                 case BTRFS_ROOT_BACKREF_KEY:
 933                         print_root_ref(l, i, "backref");
 934                         break;
 935                 case BTRFS_EXTENT_ITEM_KEY:
 936                         print_extent_item(l, i, 0);
 937                         break;
 938                 case BTRFS_METADATA_ITEM_KEY:
 939                         print_extent_item(l, i, 1);
 940                         break;
 941                 case BTRFS_TREE_BLOCK_REF_KEY:
 942                         printf("\t\ttree block backref\n");
 943                         break;
 944                 case BTRFS_SHARED_BLOCK_REF_KEY:
 945                         printf("\t\tshared block backref\n");
 946                         break;
 947                 case BTRFS_EXTENT_DATA_REF_KEY:
 948                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
 949                         printf("\t\textent data backref root %llu "
 950                                "objectid %llu offset %llu count %u\n",
 951                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
 952                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
 953                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
 954                                btrfs_extent_data_ref_count(l, dref));
 955                         break;
 956                 case BTRFS_SHARED_DATA_REF_KEY:
 957                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
 958                         printf("\t\tshared data backref count %u\n",
 959                                btrfs_shared_data_ref_count(l, sref));
 960                         break;
 961                 case BTRFS_EXTENT_REF_V0_KEY:
 962 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 963                         print_extent_ref_v0(l, i);
 964 #else
 965                         BUG();
 966 #endif
 967                         break;
 968                 case BTRFS_CSUM_ITEM_KEY:
 969                         printf("\t\tcsum item\n");
 970                         break;
 971                 case BTRFS_EXTENT_CSUM_KEY:
 972                         printf("\t\textent csum item\n");
 973                         break;
 974                 case BTRFS_EXTENT_DATA_KEY:
 975                         fi = btrfs_item_ptr(l, i,
 976                                             struct btrfs_file_extent_item);
 977                         print_file_extent_item(l, item, i, fi);
 978                         break;
 979                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
 980                         bi = btrfs_item_ptr(l, i,
 981                                             struct btrfs_block_group_item);
 982                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
 983                                            sizeof(bg_item));
 984                         memset(flags_str, 0, sizeof(flags_str));
 985                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
 986                                         flags_str);
 987                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
 988                                (unsigned long long)btrfs_block_group_used(&bg_item),
 989                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
 990                                flags_str);
 991                         break;
 992                 case BTRFS_FREE_SPACE_INFO_KEY:
 993                         free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
 994                         printf("\t\tfree space info extent count %u flags %u\n",
 995                                (unsigned)btrfs_free_space_extent_count(l, free_info),
 996                                (unsigned)btrfs_free_space_flags(l, free_info));
 997                         break;
 998                 case BTRFS_FREE_SPACE_EXTENT_KEY:
 999                         printf("\t\tfree space extent\n");
1000                         break;
1001                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1002                         printf("\t\tfree space bitmap\n");
1003                         break;
1004                 case BTRFS_CHUNK_ITEM_KEY:
1005                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
1006                         break;
1007                 case BTRFS_DEV_ITEM_KEY:
1008                         print_dev_item(l, btrfs_item_ptr(l, i,
1009                                         struct btrfs_dev_item));
1010                         break;
1011                 case BTRFS_DEV_EXTENT_KEY:
1012                         dev_extent = btrfs_item_ptr(l, i,
1013                                                     struct btrfs_dev_extent);
1014                         printf("\t\tdev extent chunk_tree %llu\n"
1015                                "\t\tchunk objectid %llu chunk offset %llu "
1016                                "length %llu\n",
1017                                (unsigned long long)
1018                                btrfs_dev_extent_chunk_tree(l, dev_extent),
1019                                (unsigned long long)
1020                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
1021                                (unsigned long long)
1022                                btrfs_dev_extent_chunk_offset(l, dev_extent),
1023                                (unsigned long long)
1024                                btrfs_dev_extent_length(l, dev_extent));
1025                         break;
1026                 case BTRFS_QGROUP_STATUS_KEY:
1027                         qg_status = btrfs_item_ptr(l, i,
1028                                         struct btrfs_qgroup_status_item);
1029                         memset(flags_str, 0, sizeof(flags_str));
1030                         qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
1031                                         flags_str);
1032                         printf("\t\tversion %llu generation %llu flags %s "
1033                                 "scan %lld\n",
1034                                 (unsigned long long)
1035                                 btrfs_qgroup_status_version(l, qg_status),
1036                                 (unsigned long long)
1037                                 btrfs_qgroup_status_generation(l, qg_status),
1038                                 flags_str,
1039                                 (unsigned long long)
1040                                 btrfs_qgroup_status_scan(l, qg_status));
1041                         break;
1042                 case BTRFS_QGROUP_RELATION_KEY:
1043                         break;
1044                 case BTRFS_QGROUP_INFO_KEY:
1045                         qg_info = btrfs_item_ptr(l, i,
1046                                                  struct btrfs_qgroup_info_item);
1047                         printf("\t\tgeneration %llu\n"
1048                              "\t\treferenced %llu referenced compressed %llu\n"
1049                              "\t\texclusive %llu exclusive compressed %llu\n",
1050                                (unsigned long long)
1051                                btrfs_qgroup_info_generation(l, qg_info),
1052                                (unsigned long long)
1053                                btrfs_qgroup_info_referenced(l, qg_info),
1054                                (unsigned long long)
1055                                btrfs_qgroup_info_referenced_compressed(l,
1056                                                                        qg_info),
1057                                (unsigned long long)
1058                                btrfs_qgroup_info_exclusive(l, qg_info),
1059                                (unsigned long long)
1060                                btrfs_qgroup_info_exclusive_compressed(l,
1061                                                                       qg_info));
1062                         break;
1063                 case BTRFS_QGROUP_LIMIT_KEY:
1064                         qg_limit = btrfs_item_ptr(l, i,
1065                                          struct btrfs_qgroup_limit_item);
1066                         printf("\t\tflags %llx\n"
1067                              "\t\tmax referenced %lld max exclusive %lld\n"
1068                              "\t\trsv referenced %lld rsv exclusive %lld\n",
1069                                (unsigned long long)
1070                                btrfs_qgroup_limit_flags(l, qg_limit),
1071                                (long long)
1072                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
1073                                (long long)
1074                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
1075                                (long long)
1076                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
1077                                (long long)
1078                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
1079                         break;
1080                 case BTRFS_UUID_KEY_SUBVOL:
1081                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1082                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
1083                                         btrfs_item_size_nr(l, i));
1084                         break;
1085                 case BTRFS_STRING_ITEM_KEY:
1086                         /* dirty, but it's simple */
1087                         str = l->data + btrfs_item_ptr_offset(l, i);
1088                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
1089                         break;
1090                 case BTRFS_DEV_STATS_KEY:
1091                         printf("\t\tdevice stats\n");
1092                         break;
1093                 };
1094                 fflush(stdout);
1095         }
1096 }
1097
1098 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1099 {
1100         int i;
1101         u32 nr;
1102         u32 size;
1103         struct btrfs_disk_key disk_key;
1104         struct btrfs_key key;
1105
1106         if (!eb)
1107                 return;
1108         nr = btrfs_header_nritems(eb);
1109         if (btrfs_is_leaf(eb)) {
1110                 btrfs_print_leaf(root, eb);
1111                 return;
1112         }
1113         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1114                (unsigned long long)eb->start,
1115                 btrfs_header_level(eb), nr,
1116                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1117                 (unsigned long long)btrfs_header_generation(eb),
1118                 (unsigned long long)btrfs_header_owner(eb));
1119         print_uuids(eb);
1120         fflush(stdout);
1121         size = root->nodesize;
1122         for (i = 0; i < nr; i++) {
1123                 u64 blocknr = btrfs_node_blockptr(eb, i);
1124                 btrfs_node_key(eb, &disk_key, i);
1125                 btrfs_disk_key_to_cpu(&key, &disk_key);
1126                 printf("\t");
1127                 btrfs_print_key(&disk_key);
1128                 printf(" block %llu (%llu) gen %llu\n",
1129                        (unsigned long long)blocknr,
1130                        (unsigned long long)blocknr / size,
1131                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1132                 fflush(stdout);
1133         }
1134         if (!follow)
1135                 return;
1136
1137         for (i = 0; i < nr; i++) {
1138                 struct extent_buffer *next = read_tree_block(root,
1139                                              btrfs_node_blockptr(eb, i),
1140                                              size,
1141                                              btrfs_node_ptr_generation(eb, i));
1142                 if (!extent_buffer_uptodate(next)) {
1143                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1144                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1145                                 (unsigned long long)btrfs_header_owner(eb));
1146                         continue;
1147                 }
1148                 if (btrfs_is_leaf(next) &&
1149                     btrfs_header_level(eb) != 1)
1150                         BUG();
1151                 if (btrfs_header_level(next) !=
1152                         btrfs_header_level(eb) - 1)
1153                         BUG();
1154                 btrfs_print_tree(root, next, 1);
1155                 free_extent_buffer(next);
1156         }
1157 }