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\tlength %llu owner %llu stripe_len %llu type %s\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                 chunk_flags_str);
 232         printf("\t\tio_align %u io_width %u sector_size %u\n",
 233                         btrfs_chunk_io_align(eb, chunk),
 234                         btrfs_chunk_io_width(eb, chunk),
 235                         btrfs_chunk_sector_size(eb, chunk));
 236         printf("\t\tnum_stripes %hu sub_stripes %hu\n", num_stripes,
 237                         btrfs_chunk_sub_stripes(eb, chunk));
 238         for (i = 0 ; i < num_stripes ; i++) {
 239                 unsigned char dev_uuid[BTRFS_UUID_SIZE];
 240                 char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
 241
 242                 read_extent_buffer(eb, dev_uuid,
 243                         (unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
 244                         BTRFS_UUID_SIZE);
 245                 uuid_unparse(dev_uuid, str_dev_uuid);
 246                 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
 247                       (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
 248                       (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
 249                 printf("\t\t\tdev uuid: %s\n", str_dev_uuid);
 250         }
 251 }
 252
 253 static void print_dev_item(struct extent_buffer *eb,
 254                            struct btrfs_dev_item *dev_item)
 255 {
 256         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 257         char fsid_str[BTRFS_UUID_UNPARSED_SIZE];
 258         u8 uuid[BTRFS_UUID_SIZE];
 259         u8 fsid[BTRFS_UUID_SIZE];
 260
 261         read_extent_buffer(eb, uuid,
 262                            (unsigned long)btrfs_device_uuid(dev_item),
 263                            BTRFS_UUID_SIZE);
 264         uuid_unparse(uuid, uuid_str);
 265         read_extent_buffer(eb, fsid,
 266                            (unsigned long)btrfs_device_fsid(dev_item),
 267                            BTRFS_UUID_SIZE);
 268         uuid_unparse(fsid, fsid_str);
 269         printf("\t\tdevid %llu total_bytes %llu bytes_used %Lu\n"
 270                "\t\tio_align %u io_width %u sector_size %u type %llu\n"
 271                "\t\tgeneration %llu start_offset %llu dev_group %u\n"
 272                "\t\tseek_speed %hhu bandwidth %hhu\n"
 273                "\t\tdev uuid %s\n"
 274                "\t\tfsid %s\n",
 275                (unsigned long long)btrfs_device_id(eb, dev_item),
 276                (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
 277                (unsigned long long)btrfs_device_bytes_used(eb, dev_item),
 278                btrfs_device_io_align(eb, dev_item),
 279                btrfs_device_io_width(eb, dev_item),
 280                btrfs_device_sector_size(eb, dev_item),
 281                (unsigned long long)btrfs_device_type(eb, dev_item),
 282                (unsigned long long)btrfs_device_generation(eb, dev_item),
 283                (unsigned long long)btrfs_device_start_offset(eb, dev_item),
 284                btrfs_device_group(eb, dev_item),
 285                btrfs_device_seek_speed(eb, dev_item),
 286                btrfs_device_bandwidth(eb, dev_item),
 287                uuid_str, fsid_str);
 288 }
 289
 290 static void print_uuids(struct extent_buffer *eb)
 291 {
 292         char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
 293         char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
 294         u8 disk_uuid[BTRFS_UUID_SIZE];
 295
 296         read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(),
 297                            BTRFS_FSID_SIZE);
 298
 299         fs_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 300         uuid_unparse(disk_uuid, fs_uuid);
 301
 302         read_extent_buffer(eb, disk_uuid,
 303                            btrfs_header_chunk_tree_uuid(eb),
 304                            BTRFS_UUID_SIZE);
 305
 306         chunk_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 307         uuid_unparse(disk_uuid, chunk_uuid);
 308         printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
 309 }
 310
 311 static void compress_type_to_str(u8 compress_type, char *ret)
 312 {
 313         switch (compress_type) {
 314         case BTRFS_COMPRESS_NONE:
 315                 strcpy(ret, "none");
 316                 break;
 317         case BTRFS_COMPRESS_ZLIB:
 318                 strcpy(ret, "zlib");
 319                 break;
 320         case BTRFS_COMPRESS_LZO:
 321                 strcpy(ret, "lzo");
 322                 break;
 323         default:
 324                 sprintf(ret, "UNKNOWN.%d", compress_type);
 325         }
 326 }
 327
 328 static void print_file_extent_item(struct extent_buffer *eb,
 329                                    struct btrfs_item *item,
 330                                    int slot,
 331                                    struct btrfs_file_extent_item *fi)
 332 {
 333         int extent_type = btrfs_file_extent_type(eb, fi);
 334         char compress_str[16];
 335
 336         compress_type_to_str(btrfs_file_extent_compression(eb, fi),
 337                              compress_str);
 338
 339         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 340                 printf("\t\tinline extent data size %u "
 341                        "ram %u compress(%s)\n",
 342                   btrfs_file_extent_inline_item_len(eb, item),
 343                   btrfs_file_extent_inline_len(eb, slot, fi),
 344                   compress_str);
 345                 return;
 346         }
 347         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 348                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 349                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 350                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 351                 printf("\t\tprealloc data offset %llu nr %llu\n",
 352                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 353                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 354                 return;
 355         }
 356         printf("\t\textent data disk byte %llu nr %llu\n",
 357                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 358                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 359         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 360                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 361                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 362                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 363         printf("\t\textent compression(%s)\n", compress_str);
 364 }
 365
 366 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 367 static void extent_flags_to_str(u64 flags, char *ret)
 368 {
 369         int empty = 1;
 370
 371         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 372                 empty = 0;
 373                 strcpy(ret, "DATA");
 374         }
 375         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 376                 if (!empty) {
 377                         empty = 0;
 378                         strcat(ret, "|");
 379                 }
 380                 strcat(ret, "TREE_BLOCK");
 381         }
 382         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 383                 strcat(ret, "|");
 384                 strcat(ret, "FULL_BACKREF");
 385         }
 386 }
 387
 388 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 389 {
 390         struct btrfs_extent_item *ei;
 391         struct btrfs_extent_inline_ref *iref;
 392         struct btrfs_extent_data_ref *dref;
 393         struct btrfs_shared_data_ref *sref;
 394         struct btrfs_disk_key key;
 395         unsigned long end;
 396         unsigned long ptr;
 397         int type;
 398         u32 item_size = btrfs_item_size_nr(eb, slot);
 399         u64 flags;
 400         u64 offset;
 401         char flags_str[32] = {0};
 402
 403         if (item_size < sizeof(*ei)) {
 404 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 405                 struct btrfs_extent_item_v0 *ei0;
 406                 BUG_ON(item_size != sizeof(*ei0));
 407                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 408                 printf("\t\textent refs %u\n",
 409                        btrfs_extent_refs_v0(eb, ei0));
 410                 return;
 411 #else
 412                 BUG();
 413 #endif
 414         }
 415
 416         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 417         flags = btrfs_extent_flags(eb, ei);
 418         extent_flags_to_str(flags, flags_str);
 419
 420         printf("\t\textent refs %llu gen %llu flags %s\n",
 421                (unsigned long long)btrfs_extent_refs(eb, ei),
 422                (unsigned long long)btrfs_extent_generation(eb, ei),
 423                flags_str);
 424
 425         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 426                 struct btrfs_tree_block_info *info;
 427                 info = (struct btrfs_tree_block_info *)(ei + 1);
 428                 btrfs_tree_block_key(eb, info, &key);
 429                 printf("\t\ttree block ");
 430                 btrfs_print_key(&key);
 431                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 432                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 433         } else if (metadata) {
 434                 struct btrfs_key tmp;
 435
 436                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 437                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 438                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 439         } else{
 440                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 441         }
 442
 443         ptr = (unsigned long)iref;
 444         end = (unsigned long)ei + item_size;
 445         while (ptr < end) {
 446                 iref = (struct btrfs_extent_inline_ref *)ptr;
 447                 type = btrfs_extent_inline_ref_type(eb, iref);
 448                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 449                 switch (type) {
 450                 case BTRFS_TREE_BLOCK_REF_KEY:
 451                         printf("\t\ttree block backref root %llu\n",
 452                                (unsigned long long)offset);
 453                         break;
 454                 case BTRFS_SHARED_BLOCK_REF_KEY:
 455                         printf("\t\tshared block backref parent %llu\n",
 456                                (unsigned long long)offset);
 457                         break;
 458                 case BTRFS_EXTENT_DATA_REF_KEY:
 459                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 460                         printf("\t\textent data backref root %llu "
 461                                "objectid %llu offset %llu count %u\n",
 462                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 463                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 464                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 465                                btrfs_extent_data_ref_count(eb, dref));
 466                         break;
 467                 case BTRFS_SHARED_DATA_REF_KEY:
 468                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 469                         printf("\t\tshared data backref parent %llu count %u\n",
 470                                (unsigned long long)offset,
 471                                btrfs_shared_data_ref_count(eb, sref));
 472                         break;
 473                 default:
 474                         return;
 475                 }
 476                 ptr += btrfs_extent_inline_ref_size(type);
 477         }
 478         WARN_ON(ptr > end);
 479 }
 480
 481 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 482 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 483 {
 484         struct btrfs_extent_ref_v0 *ref0;
 485
 486         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 487         printf("\t\textent back ref root %llu gen %llu "
 488                 "owner %llu num_refs %lu\n",
 489                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 490                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 491                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 492                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 493 }
 494 #endif
 495
 496 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 497 {
 498         struct btrfs_root_ref *ref;
 499         char namebuf[BTRFS_NAME_LEN];
 500         int namelen;
 501
 502         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 503         namelen = btrfs_root_ref_name_len(leaf, ref);
 504         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 505         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 506                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 507                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 508                namelen, namebuf);
 509 }
 510
 511 static int count_bytes(void *buf, int len, char b)
 512 {
 513         int cnt = 0;
 514         int i;
 515         for (i = 0; i < len; i++) {
 516                 if (((char*)buf)[i] == b)
 517                         cnt++;
 518         }
 519         return cnt;
 520 }
 521
 522 /*
 523  * Caller must ensure sizeof(*ret) >= 7 "RDONLY"
 524  */
 525 static void root_flags_to_str(u64 flags, char *ret)
 526 {
 527         if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
 528                 strcat(ret, "RDONLY");
 529         else
 530                 strcat(ret, "none");
 531 }
 532
 533 static void print_root(struct extent_buffer *leaf, int slot)
 534 {
 535         struct btrfs_root_item *ri;
 536         struct btrfs_root_item root_item;
 537         int len;
 538         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 539         char flags_str[32] = {0};
 540
 541         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 542         len = btrfs_item_size_nr(leaf, slot);
 543
 544         memset(&root_item, 0, sizeof(root_item));
 545         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 546         root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
 547
 548         printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %llu\n",
 549                 (unsigned long long)btrfs_root_bytenr(&root_item),
 550                 btrfs_root_level(&root_item),
 551                 (unsigned long long)btrfs_root_dirid(&root_item),
 552                 btrfs_root_refs(&root_item),
 553                 (unsigned long long)btrfs_root_generation(&root_item),
 554                 (unsigned long long)btrfs_root_last_snapshot(&root_item));
 555         printf("\t\tflags 0x%llx(%s)\n", btrfs_root_flags(&root_item),
 556                flags_str);
 557
 558         if (root_item.generation == root_item.generation_v2) {
 559                 uuid_unparse(root_item.uuid, uuid_str);
 560                 printf("\t\tuuid %s\n", uuid_str);
 561                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 562                         uuid_unparse(root_item.parent_uuid, uuid_str);
 563                         printf("\t\tparent_uuid %s\n", uuid_str);
 564                 }
 565                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 566                         uuid_unparse(root_item.received_uuid, uuid_str);
 567                         printf("\t\treceived_uuid %s\n", uuid_str);
 568                 }
 569                 if (root_item.ctransid) {
 570                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 571                                 btrfs_root_ctransid(&root_item),
 572                                 btrfs_root_otransid(&root_item),
 573                                 btrfs_root_stransid(&root_item),
 574                                 btrfs_root_rtransid(&root_item));
 575                 }
 576         }
 577         if (btrfs_root_refs(&root_item) == 0) {
 578                 struct btrfs_key drop_key;
 579                 btrfs_disk_key_to_cpu(&drop_key,
 580                                       &root_item.drop_progress);
 581                 printf("\t\tdrop ");
 582                 btrfs_print_key(&root_item.drop_progress);
 583                 printf(" level %d\n", root_item.drop_level);
 584         }
 585 }
 586
 587 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 588 {
 589         struct btrfs_free_space_header *header;
 590         struct btrfs_disk_key location;
 591
 592         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 593         btrfs_free_space_key(leaf, header, &location);
 594         printf("\t\tlocation ");
 595         btrfs_print_key(&location);
 596         printf("\n");
 597         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 598                (unsigned long long)btrfs_free_space_generation(leaf, header),
 599                (unsigned long long)btrfs_free_space_entries(leaf, header),
 600                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 601 }
 602
 603 void print_key_type(FILE *stream, u64 objectid, u8 type)
 604 {
 605         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 606                 fprintf(stream, "UNTYPED");
 607                 return;
 608         }
 609
 610         switch (type) {
 611         case BTRFS_INODE_ITEM_KEY:
 612                 fprintf(stream, "INODE_ITEM");
 613                 break;
 614         case BTRFS_INODE_REF_KEY:
 615                 fprintf(stream, "INODE_REF");
 616                 break;
 617         case BTRFS_INODE_EXTREF_KEY:
 618                 fprintf(stream, "INODE_EXTREF");
 619                 break;
 620         case BTRFS_DIR_ITEM_KEY:
 621                 fprintf(stream, "DIR_ITEM");
 622                 break;
 623         case BTRFS_DIR_INDEX_KEY:
 624                 fprintf(stream, "DIR_INDEX");
 625                 break;
 626         case BTRFS_DIR_LOG_ITEM_KEY:
 627                 fprintf(stream, "DIR_LOG_ITEM");
 628                 break;
 629         case BTRFS_DIR_LOG_INDEX_KEY:
 630                 fprintf(stream, "DIR_LOG_INDEX");
 631                 break;
 632         case BTRFS_XATTR_ITEM_KEY:
 633                 fprintf(stream, "XATTR_ITEM");
 634                 break;
 635         case BTRFS_ORPHAN_ITEM_KEY:
 636                 fprintf(stream, "ORPHAN_ITEM");
 637                 break;
 638         case BTRFS_ROOT_ITEM_KEY:
 639                 fprintf(stream, "ROOT_ITEM");
 640                 break;
 641         case BTRFS_ROOT_REF_KEY:
 642                 fprintf(stream, "ROOT_REF");
 643                 break;
 644         case BTRFS_ROOT_BACKREF_KEY:
 645                 fprintf(stream, "ROOT_BACKREF");
 646                 break;
 647         case BTRFS_EXTENT_ITEM_KEY:
 648                 fprintf(stream, "EXTENT_ITEM");
 649                 break;
 650         case BTRFS_METADATA_ITEM_KEY:
 651                 fprintf(stream, "METADATA_ITEM");
 652                 break;
 653         case BTRFS_TREE_BLOCK_REF_KEY:
 654                 fprintf(stream, "TREE_BLOCK_REF");
 655                 break;
 656         case BTRFS_SHARED_BLOCK_REF_KEY:
 657                 fprintf(stream, "SHARED_BLOCK_REF");
 658                 break;
 659         case BTRFS_EXTENT_DATA_REF_KEY:
 660                 fprintf(stream, "EXTENT_DATA_REF");
 661                 break;
 662         case BTRFS_SHARED_DATA_REF_KEY:
 663                 fprintf(stream, "SHARED_DATA_REF");
 664                 break;
 665         case BTRFS_EXTENT_REF_V0_KEY:
 666                 fprintf(stream, "EXTENT_REF_V0");
 667                 break;
 668         case BTRFS_CSUM_ITEM_KEY:
 669                 fprintf(stream, "CSUM_ITEM");
 670                 break;
 671         case BTRFS_EXTENT_CSUM_KEY:
 672                 fprintf(stream, "EXTENT_CSUM");
 673                 break;
 674         case BTRFS_EXTENT_DATA_KEY:
 675                 fprintf(stream, "EXTENT_DATA");
 676                 break;
 677         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 678                 fprintf(stream, "BLOCK_GROUP_ITEM");
 679                 break;
 680         case BTRFS_FREE_SPACE_INFO_KEY:
 681                 fprintf(stream, "FREE_SPACE_INFO");
 682                 break;
 683         case BTRFS_FREE_SPACE_EXTENT_KEY:
 684                 fprintf(stream, "FREE_SPACE_EXTENT");
 685                 break;
 686         case BTRFS_FREE_SPACE_BITMAP_KEY:
 687                 fprintf(stream, "FREE_SPACE_BITMAP");
 688                 break;
 689         case BTRFS_CHUNK_ITEM_KEY:
 690                 fprintf(stream, "CHUNK_ITEM");
 691                 break;
 692         case BTRFS_DEV_ITEM_KEY:
 693                 fprintf(stream, "DEV_ITEM");
 694                 break;
 695         case BTRFS_DEV_EXTENT_KEY:
 696                 fprintf(stream, "DEV_EXTENT");
 697                 break;
 698         case BTRFS_BALANCE_ITEM_KEY:
 699                 fprintf(stream, "BALANCE_ITEM");
 700                 break;
 701         case BTRFS_DEV_REPLACE_KEY:
 702                 fprintf(stream, "DEV_REPLACE");
 703                 break;
 704         case BTRFS_STRING_ITEM_KEY:
 705                 fprintf(stream, "STRING_ITEM");
 706                 break;
 707         case BTRFS_QGROUP_STATUS_KEY:
 708                 fprintf(stream, "QGROUP_STATUS");
 709                 break;
 710         case BTRFS_QGROUP_RELATION_KEY:
 711                 fprintf(stream, "QGROUP_RELATION");
 712                 break;
 713         case BTRFS_QGROUP_INFO_KEY:
 714                 fprintf(stream, "QGROUP_INFO");
 715                 break;
 716         case BTRFS_QGROUP_LIMIT_KEY:
 717                 fprintf(stream, "QGROUP_LIMIT");
 718                 break;
 719         case BTRFS_DEV_STATS_KEY:
 720                 fprintf(stream, "DEV_STATS");
 721                 break;
 722         case BTRFS_UUID_KEY_SUBVOL:
 723                 fprintf(stream, "UUID_KEY_SUBVOL");
 724                 break;
 725         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 726                 fprintf(stream, "UUID_KEY_RECEIVED_SUBVOL");
 727                 break;
 728         default:
 729                 fprintf(stream, "UNKNOWN.%d", type);
 730         };
 731 }
 732
 733 void print_objectid(FILE *stream, u64 objectid, u8 type)
 734 {
 735         switch (type) {
 736         case BTRFS_DEV_EXTENT_KEY:
 737                 /* device id */
 738                 fprintf(stream, "%llu", (unsigned long long)objectid);
 739                 return;
 740         case BTRFS_QGROUP_RELATION_KEY:
 741                 fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
 742                        btrfs_qgroup_subvid(objectid));
 743                 return;
 744         case BTRFS_UUID_KEY_SUBVOL:
 745         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 746                 fprintf(stream, "0x%016llx", (unsigned long long)objectid);
 747                 return;
 748         }
 749
 750         switch (objectid) {
 751         case BTRFS_ROOT_TREE_OBJECTID:
 752                 if (type == BTRFS_DEV_ITEM_KEY)
 753                         fprintf(stream, "DEV_ITEMS");
 754                 else
 755                         fprintf(stream, "ROOT_TREE");
 756                 break;
 757         case BTRFS_EXTENT_TREE_OBJECTID:
 758                 fprintf(stream, "EXTENT_TREE");
 759                 break;
 760         case BTRFS_CHUNK_TREE_OBJECTID:
 761                 fprintf(stream, "CHUNK_TREE");
 762                 break;
 763         case BTRFS_DEV_TREE_OBJECTID:
 764                 fprintf(stream, "DEV_TREE");
 765                 break;
 766         case BTRFS_FS_TREE_OBJECTID:
 767                 fprintf(stream, "FS_TREE");
 768                 break;
 769         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 770                 fprintf(stream, "ROOT_TREE_DIR");
 771                 break;
 772         case BTRFS_CSUM_TREE_OBJECTID:
 773                 fprintf(stream, "CSUM_TREE");
 774                 break;
 775         case BTRFS_BALANCE_OBJECTID:
 776                 fprintf(stream, "BALANCE");
 777                 break;
 778         case BTRFS_ORPHAN_OBJECTID:
 779                 fprintf(stream, "ORPHAN");
 780                 break;
 781         case BTRFS_TREE_LOG_OBJECTID:
 782                 fprintf(stream, "TREE_LOG");
 783                 break;
 784         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 785                 fprintf(stream, "LOG_FIXUP");
 786                 break;
 787         case BTRFS_TREE_RELOC_OBJECTID:
 788                 fprintf(stream, "TREE_RELOC");
 789                 break;
 790         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 791                 fprintf(stream, "DATA_RELOC_TREE");
 792                 break;
 793         case BTRFS_EXTENT_CSUM_OBJECTID:
 794                 fprintf(stream, "EXTENT_CSUM");
 795                 break;
 796         case BTRFS_FREE_SPACE_OBJECTID:
 797                 fprintf(stream, "FREE_SPACE");
 798                 break;
 799         case BTRFS_FREE_INO_OBJECTID:
 800                 fprintf(stream, "FREE_INO");
 801                 break;
 802         case BTRFS_QUOTA_TREE_OBJECTID:
 803                 fprintf(stream, "QUOTA_TREE");
 804                 break;
 805         case BTRFS_UUID_TREE_OBJECTID:
 806                 fprintf(stream, "UUID_TREE");
 807                 break;
 808         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 809                 fprintf(stream, "FREE_SPACE_TREE");
 810                 break;
 811         case BTRFS_MULTIPLE_OBJECTIDS:
 812                 fprintf(stream, "MULTIPLE");
 813                 break;
 814         case (u64)-1:
 815                 fprintf(stream, "-1");
 816                 break;
 817         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 818                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 819                         fprintf(stream, "FIRST_CHUNK_TREE");
 820                         break;
 821                 }
 822                 /* fall-thru */
 823         default:
 824                 fprintf(stream, "%llu", (unsigned long long)objectid);
 825         }
 826 }
 827
 828 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 829 {
 830         u64 objectid = btrfs_disk_key_objectid(disk_key);
 831         u8 type = btrfs_disk_key_type(disk_key);
 832         u64 offset = btrfs_disk_key_offset(disk_key);
 833
 834         printf("key (");
 835         print_objectid(stdout, objectid, type);
 836         printf(" ");
 837         print_key_type(stdout, objectid, type);
 838         switch (type) {
 839         case BTRFS_QGROUP_RELATION_KEY:
 840         case BTRFS_QGROUP_INFO_KEY:
 841         case BTRFS_QGROUP_LIMIT_KEY:
 842                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 843                        btrfs_qgroup_subvid(offset));
 844                 break;
 845         case BTRFS_UUID_KEY_SUBVOL:
 846         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 847                 printf(" 0x%016llx)", (unsigned long long)offset);
 848                 break;
 849         default:
 850                 if (offset == (u64)-1)
 851                         printf(" -1)");
 852                 else
 853                         printf(" %llu)", (unsigned long long)offset);
 854                 break;
 855         }
 856 }
 857
 858 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 859                             u32 item_size)
 860 {
 861         if (item_size & (sizeof(u64) - 1)) {
 862                 printf("btrfs: uuid item with illegal size %lu!\n",
 863                        (unsigned long)item_size);
 864                 return;
 865         }
 866         while (item_size) {
 867                 __le64 subvol_id;
 868
 869                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 870                 printf("\t\tsubvol_id %llu\n",
 871                         (unsigned long long)le64_to_cpu(subvol_id));
 872                 item_size -= sizeof(u64);
 873                 offset += sizeof(u64);
 874         }
 875 }
 876
 877 /* Btrfs inode flag stringification helper */
 878 #define STRCAT_ONE_INODE_FLAG(flags, name, empty, dst) ({                       \
 879         if (flags & BTRFS_INODE_##name) {                               \
 880                 if (!empty)                                             \
 881                         strcat(dst, "|");                               \
 882                 strcat(dst, #name);                                     \
 883                 empty = 0;                                              \
 884         }                                                               \
 885 })
 886
 887 /*
 888  * Caller should ensure sizeof(*ret) >= 102: all charactors plus '|' of
 889  * BTRFS_INODE_* flags
 890  */
 891 static void inode_flags_to_str(u64 flags, char *ret)
 892 {
 893         int empty = 1;
 894
 895         STRCAT_ONE_INODE_FLAG(flags, NODATASUM, empty, ret);
 896         STRCAT_ONE_INODE_FLAG(flags, NODATACOW, empty, ret);
 897         STRCAT_ONE_INODE_FLAG(flags, READONLY, empty, ret);
 898         STRCAT_ONE_INODE_FLAG(flags, NOCOMPRESS, empty, ret);
 899         STRCAT_ONE_INODE_FLAG(flags, PREALLOC, empty, ret);
 900         STRCAT_ONE_INODE_FLAG(flags, SYNC, empty, ret);
 901         STRCAT_ONE_INODE_FLAG(flags, IMMUTABLE, empty, ret);
 902         STRCAT_ONE_INODE_FLAG(flags, APPEND, empty, ret);
 903         STRCAT_ONE_INODE_FLAG(flags, NODUMP, empty, ret);
 904         STRCAT_ONE_INODE_FLAG(flags, NOATIME, empty, ret);
 905         STRCAT_ONE_INODE_FLAG(flags, DIRSYNC, empty, ret);
 906         STRCAT_ONE_INODE_FLAG(flags, COMPRESS, empty, ret);
 907         if (empty)
 908                 strcat(ret, "none");
 909 }
 910
 911 static void print_inode_item(struct extent_buffer *eb, struct btrfs_item *item,
 912                                 struct btrfs_inode_item *ii)
 913 {
 914         char flags_str[256];
 915
 916         memset(flags_str, 0, sizeof(flags_str));
 917         inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
 918         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 919                "\t\tblock group %llu mode %o links %u uid %u gid %u\n"
 920                "\t\trdev %llu flags 0x%llx(%s)\n",
 921                (unsigned long long)btrfs_inode_generation(eb, ii),
 922                (unsigned long long)btrfs_inode_transid(eb, ii),
 923                (unsigned long long)btrfs_inode_size(eb, ii),
 924                (unsigned long long)btrfs_inode_nbytes(eb, ii),
 925                (unsigned long long)btrfs_inode_block_group(eb,ii),
 926                btrfs_inode_mode(eb, ii),
 927                btrfs_inode_nlink(eb, ii),
 928                btrfs_inode_uid(eb, ii),
 929                btrfs_inode_gid(eb, ii),
 930                (unsigned long long)btrfs_inode_rdev(eb,ii),
 931                (unsigned long long)btrfs_inode_flags(eb,ii),
 932                flags_str);
 933 }
 934
 935 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 936 {
 937         int i;
 938         char *str;
 939         struct btrfs_item *item;
 940         struct btrfs_dir_item *di;
 941         struct btrfs_inode_item *ii;
 942         struct btrfs_file_extent_item *fi;
 943         struct btrfs_block_group_item *bi;
 944         struct btrfs_extent_data_ref *dref;
 945         struct btrfs_shared_data_ref *sref;
 946         struct btrfs_inode_ref *iref;
 947         struct btrfs_inode_extref *iref2;
 948         struct btrfs_dev_extent *dev_extent;
 949         struct btrfs_disk_key disk_key;
 950         struct btrfs_block_group_item bg_item;
 951         struct btrfs_free_space_info *free_info;
 952         struct btrfs_dir_log_item *dlog;
 953         struct btrfs_qgroup_info_item *qg_info;
 954         struct btrfs_qgroup_limit_item *qg_limit;
 955         struct btrfs_qgroup_status_item *qg_status;
 956         u32 nr = btrfs_header_nritems(l);
 957         u64 objectid;
 958         u32 type;
 959         char flags_str[256];
 960         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 961         u8 uuid[BTRFS_UUID_SIZE];
 962
 963         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 964                 (unsigned long long)btrfs_header_bytenr(l), nr,
 965                 btrfs_leaf_free_space(root, l),
 966                 (unsigned long long)btrfs_header_generation(l),
 967                 (unsigned long long)btrfs_header_owner(l));
 968         print_uuids(l);
 969         fflush(stdout);
 970         for (i = 0 ; i < nr ; i++) {
 971                 item = btrfs_item_nr(i);
 972                 btrfs_item_key(l, &disk_key, i);
 973                 objectid = btrfs_disk_key_objectid(&disk_key);
 974                 type = btrfs_disk_key_type(&disk_key);
 975                 printf("\titem %d ", i);
 976                 btrfs_print_key(&disk_key);
 977                 printf(" itemoff %d itemsize %d\n",
 978                         btrfs_item_offset(l, item),
 979                         btrfs_item_size(l, item));
 980
 981                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
 982                         print_free_space_header(l, i);
 983
 984                 switch (type) {
 985                 case BTRFS_INODE_ITEM_KEY:
 986                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
 987                         print_inode_item(l, item, ii);
 988                         break;
 989                 case BTRFS_INODE_REF_KEY:
 990                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
 991                         print_inode_ref_item(l, item, iref);
 992                         break;
 993                 case BTRFS_INODE_EXTREF_KEY:
 994                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
 995                         print_inode_extref_item(l, item, iref2);
 996                         break;
 997                 case BTRFS_DIR_ITEM_KEY:
 998                 case BTRFS_DIR_INDEX_KEY:
 999                 case BTRFS_XATTR_ITEM_KEY:
1000                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
1001                         print_dir_item(l, item, di);
1002                         break;
1003                 case BTRFS_DIR_LOG_INDEX_KEY:
1004                 case BTRFS_DIR_LOG_ITEM_KEY:
1005                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
1006                         printf("\t\tdir log end %Lu\n",
1007                                (unsigned long long)btrfs_dir_log_end(l, dlog));
1008                        break;
1009                 case BTRFS_ORPHAN_ITEM_KEY:
1010                         printf("\t\torphan item\n");
1011                         break;
1012                 case BTRFS_ROOT_ITEM_KEY:
1013                         print_root(l, i);
1014                         break;
1015                 case BTRFS_ROOT_REF_KEY:
1016                         print_root_ref(l, i, "ref");
1017                         break;
1018                 case BTRFS_ROOT_BACKREF_KEY:
1019                         print_root_ref(l, i, "backref");
1020                         break;
1021                 case BTRFS_EXTENT_ITEM_KEY:
1022                         print_extent_item(l, i, 0);
1023                         break;
1024                 case BTRFS_METADATA_ITEM_KEY:
1025                         print_extent_item(l, i, 1);
1026                         break;
1027                 case BTRFS_TREE_BLOCK_REF_KEY:
1028                         printf("\t\ttree block backref\n");
1029                         break;
1030                 case BTRFS_SHARED_BLOCK_REF_KEY:
1031                         printf("\t\tshared block backref\n");
1032                         break;
1033                 case BTRFS_EXTENT_DATA_REF_KEY:
1034                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
1035                         printf("\t\textent data backref root %llu "
1036                                "objectid %llu offset %llu count %u\n",
1037                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
1038                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
1039                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
1040                                btrfs_extent_data_ref_count(l, dref));
1041                         break;
1042                 case BTRFS_SHARED_DATA_REF_KEY:
1043                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
1044                         printf("\t\tshared data backref count %u\n",
1045                                btrfs_shared_data_ref_count(l, sref));
1046                         break;
1047                 case BTRFS_EXTENT_REF_V0_KEY:
1048 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
1049                         print_extent_ref_v0(l, i);
1050 #else
1051                         BUG();
1052 #endif
1053                         break;
1054                 case BTRFS_CSUM_ITEM_KEY:
1055                         printf("\t\tcsum item\n");
1056                         break;
1057                 case BTRFS_EXTENT_CSUM_KEY:
1058                         printf("\t\textent csum item\n");
1059                         break;
1060                 case BTRFS_EXTENT_DATA_KEY:
1061                         fi = btrfs_item_ptr(l, i,
1062                                             struct btrfs_file_extent_item);
1063                         print_file_extent_item(l, item, i, fi);
1064                         break;
1065                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
1066                         bi = btrfs_item_ptr(l, i,
1067                                             struct btrfs_block_group_item);
1068                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
1069                                            sizeof(bg_item));
1070                         memset(flags_str, 0, sizeof(flags_str));
1071                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
1072                                         flags_str);
1073                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
1074                                (unsigned long long)btrfs_block_group_used(&bg_item),
1075                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
1076                                flags_str);
1077                         break;
1078                 case BTRFS_FREE_SPACE_INFO_KEY:
1079                         free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
1080                         printf("\t\tfree space info extent count %u flags %u\n",
1081                                (unsigned)btrfs_free_space_extent_count(l, free_info),
1082                                (unsigned)btrfs_free_space_flags(l, free_info));
1083                         break;
1084                 case BTRFS_FREE_SPACE_EXTENT_KEY:
1085                         printf("\t\tfree space extent\n");
1086                         break;
1087                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1088                         printf("\t\tfree space bitmap\n");
1089                         break;
1090                 case BTRFS_CHUNK_ITEM_KEY:
1091                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
1092                         break;
1093                 case BTRFS_DEV_ITEM_KEY:
1094                         print_dev_item(l, btrfs_item_ptr(l, i,
1095                                         struct btrfs_dev_item));
1096                         break;
1097                 case BTRFS_DEV_EXTENT_KEY:
1098                         dev_extent = btrfs_item_ptr(l, i,
1099                                                     struct btrfs_dev_extent);
1100                         read_extent_buffer(l, uuid,
1101                                 (unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
1102                                 BTRFS_UUID_SIZE);
1103                         uuid_unparse(uuid, uuid_str);
1104                         printf("\t\tdev extent chunk_tree %llu\n"
1105                                "\t\tchunk objectid %llu chunk offset %llu "
1106                                "length %llu\n"
1107                                "\t\tchunk_tree_uuid %s\n",
1108                                (unsigned long long)
1109                                btrfs_dev_extent_chunk_tree(l, dev_extent),
1110                                (unsigned long long)
1111                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
1112                                (unsigned long long)
1113                                btrfs_dev_extent_chunk_offset(l, dev_extent),
1114                                (unsigned long long)
1115                                btrfs_dev_extent_length(l, dev_extent),
1116                                uuid_str);
1117                         break;
1118                 case BTRFS_QGROUP_STATUS_KEY:
1119                         qg_status = btrfs_item_ptr(l, i,
1120                                         struct btrfs_qgroup_status_item);
1121                         memset(flags_str, 0, sizeof(flags_str));
1122                         qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
1123                                         flags_str);
1124                         printf("\t\tversion %llu generation %llu flags %s "
1125                                 "scan %lld\n",
1126                                 (unsigned long long)
1127                                 btrfs_qgroup_status_version(l, qg_status),
1128                                 (unsigned long long)
1129                                 btrfs_qgroup_status_generation(l, qg_status),
1130                                 flags_str,
1131                                 (unsigned long long)
1132                                 btrfs_qgroup_status_rescan(l, qg_status));
1133                         break;
1134                 case BTRFS_QGROUP_RELATION_KEY:
1135                         break;
1136                 case BTRFS_QGROUP_INFO_KEY:
1137                         qg_info = btrfs_item_ptr(l, i,
1138                                                  struct btrfs_qgroup_info_item);
1139                         printf("\t\tgeneration %llu\n"
1140                              "\t\treferenced %llu referenced compressed %llu\n"
1141                              "\t\texclusive %llu exclusive compressed %llu\n",
1142                                (unsigned long long)
1143                                btrfs_qgroup_info_generation(l, qg_info),
1144                                (unsigned long long)
1145                                btrfs_qgroup_info_referenced(l, qg_info),
1146                                (unsigned long long)
1147                                btrfs_qgroup_info_referenced_compressed(l,
1148                                                                        qg_info),
1149                                (unsigned long long)
1150                                btrfs_qgroup_info_exclusive(l, qg_info),
1151                                (unsigned long long)
1152                                btrfs_qgroup_info_exclusive_compressed(l,
1153                                                                       qg_info));
1154                         break;
1155                 case BTRFS_QGROUP_LIMIT_KEY:
1156                         qg_limit = btrfs_item_ptr(l, i,
1157                                          struct btrfs_qgroup_limit_item);
1158                         printf("\t\tflags %llx\n"
1159                              "\t\tmax referenced %lld max exclusive %lld\n"
1160                              "\t\trsv referenced %lld rsv exclusive %lld\n",
1161                                (unsigned long long)
1162                                btrfs_qgroup_limit_flags(l, qg_limit),
1163                                (long long)
1164                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
1165                                (long long)
1166                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
1167                                (long long)
1168                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
1169                                (long long)
1170                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
1171                         break;
1172                 case BTRFS_UUID_KEY_SUBVOL:
1173                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1174                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
1175                                         btrfs_item_size_nr(l, i));
1176                         break;
1177                 case BTRFS_STRING_ITEM_KEY:
1178                         /* dirty, but it's simple */
1179                         str = l->data + btrfs_item_ptr_offset(l, i);
1180                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
1181                         break;
1182                 case BTRFS_DEV_STATS_KEY:
1183                         printf("\t\tdevice stats\n");
1184                         break;
1185                 };
1186                 fflush(stdout);
1187         }
1188 }
1189
1190 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1191 {
1192         int i;
1193         u32 nr;
1194         u32 size;
1195         struct btrfs_disk_key disk_key;
1196         struct btrfs_key key;
1197         struct extent_buffer *next;
1198
1199         if (!eb)
1200                 return;
1201         nr = btrfs_header_nritems(eb);
1202         if (btrfs_is_leaf(eb)) {
1203                 btrfs_print_leaf(root, eb);
1204                 return;
1205         }
1206         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1207                (unsigned long long)eb->start,
1208                 btrfs_header_level(eb), nr,
1209                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1210                 (unsigned long long)btrfs_header_generation(eb),
1211                 (unsigned long long)btrfs_header_owner(eb));
1212         print_uuids(eb);
1213         fflush(stdout);
1214         size = root->nodesize;
1215         for (i = 0; i < nr; i++) {
1216                 u64 blocknr = btrfs_node_blockptr(eb, i);
1217                 btrfs_node_key(eb, &disk_key, i);
1218                 btrfs_disk_key_to_cpu(&key, &disk_key);
1219                 printf("\t");
1220                 btrfs_print_key(&disk_key);
1221                 printf(" block %llu (%llu) gen %llu\n",
1222                        (unsigned long long)blocknr,
1223                        (unsigned long long)blocknr / size,
1224                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1225                 fflush(stdout);
1226         }
1227         if (!follow)
1228                 return;
1229
1230         for (i = 0; i < nr; i++) {
1231                 next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
1232                                 btrfs_node_ptr_generation(eb, i));
1233                 if (!extent_buffer_uptodate(next)) {
1234                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1235                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1236                                 (unsigned long long)btrfs_header_owner(eb));
1237                         continue;
1238                 }
1239                 if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
1240                         warning(
1241         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1242                                 i, btrfs_header_level(next),
1243                                 btrfs_header_level(eb));
1244                         goto out;
1245                 }
1246                 if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
1247                         warning(
1248         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1249                                 i, btrfs_header_level(next),
1250                                 btrfs_header_level(eb));
1251                         goto out;
1252                 }
1253                 btrfs_print_tree(root, next, 1);
1254                 free_extent_buffer(next);
1255         }
1256
1257         return;
1258
1259 out:
1260         free_extent_buffer(next);
1261 }