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