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\ttransid %llu data_len %u name_len %u\n",
  89                                 btrfs_dir_transid(eb, di),
  90                                 data_len, name_len);
  91                 printf("\t\tname: %.*s\n", len, namebuf);
  92                 if (data_len) {
  93                         len = (data_len <= sizeof(namebuf))? data_len: sizeof(namebuf);
  94                         read_extent_buffer(eb, namebuf,
  95                                 (unsigned long)(di + 1) + name_len, len);
  96                         printf("\t\tdata %.*s\n", len, namebuf);
  97                 }
  98                 len = sizeof(*di) + name_len + data_len;
  99                 di = (struct btrfs_dir_item *)((char *)di + len);
 100                 cur += len;
 101         }
 102         return 0;
 103 }
 104
 105 static int print_inode_extref_item(struct extent_buffer *eb,
 106                                    struct btrfs_item *item,
 107                                    struct btrfs_inode_extref *extref)
 108 {
 109         u32 total;
 110         u32 cur = 0;
 111         u32 len;
 112         u32 name_len = 0;
 113         u64 index = 0;
 114         u64 parent_objid;
 115         char namebuf[BTRFS_NAME_LEN];
 116
 117         total = btrfs_item_size(eb, item);
 118
 119         while (cur < total) {
 120                 index = btrfs_inode_extref_index(eb, extref);
 121                 name_len = btrfs_inode_extref_name_len(eb, extref);
 122                 parent_objid = btrfs_inode_extref_parent(eb, extref);
 123
 124                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 125
 126                 read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len);
 127
 128                 printf("\t\tinode extref index %llu parent %llu namelen %u "
 129                        "name: %.*s\n",
 130                        (unsigned long long)index,
 131                        (unsigned long long)parent_objid,
 132                        name_len, len, namebuf);
 133
 134                 len = sizeof(*extref) + name_len;
 135                 extref = (struct btrfs_inode_extref *)((char *)extref + len);
 136                 cur += len;
 137         }
 138         return 0;
 139 }
 140
 141 static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
 142                                 struct btrfs_inode_ref *ref)
 143 {
 144         u32 total;
 145         u32 cur = 0;
 146         u32 len;
 147         u32 name_len;
 148         u64 index;
 149         char namebuf[BTRFS_NAME_LEN];
 150         total = btrfs_item_size(eb, item);
 151         while(cur < total) {
 152                 name_len = btrfs_inode_ref_name_len(eb, ref);
 153                 index = btrfs_inode_ref_index(eb, ref);
 154                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 155                 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
 156                 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
 157                        (unsigned long long)index, name_len, len, namebuf);
 158                 len = sizeof(*ref) + name_len;
 159                 ref = (struct btrfs_inode_ref *)((char *)ref + len);
 160                 cur += len;
 161         }
 162         return 0;
 163 }
 164
 165 /* Caller should ensure sizeof(*ret)>=21 "DATA|METADATA|RAID10" */
 166 static void bg_flags_to_str(u64 flags, char *ret)
 167 {
 168         int empty = 1;
 169
 170         if (flags & BTRFS_BLOCK_GROUP_DATA) {
 171                 empty = 0;
 172                 strcpy(ret, "DATA");
 173         }
 174         if (flags & BTRFS_BLOCK_GROUP_METADATA) {
 175                 if (!empty)
 176                         strcat(ret, "|");
 177                 strcat(ret, "METADATA");
 178         }
 179         if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
 180                 if (!empty)
 181                         strcat(ret, "|");
 182                 strcat(ret, "SYSTEM");
 183         }
 184         switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
 185         case BTRFS_BLOCK_GROUP_RAID0:
 186                 strcat(ret, "|RAID0");
 187                 break;
 188         case BTRFS_BLOCK_GROUP_RAID1:
 189                 strcat(ret, "|RAID1");
 190                 break;
 191         case BTRFS_BLOCK_GROUP_DUP:
 192                 strcat(ret, "|DUP");
 193                 break;
 194         case BTRFS_BLOCK_GROUP_RAID10:
 195                 strcat(ret, "|RAID10");
 196                 break;
 197         case BTRFS_BLOCK_GROUP_RAID5:
 198                 strcat(ret, "|RAID5");
 199                 break;
 200         case BTRFS_BLOCK_GROUP_RAID6:
 201                 strcat(ret, "|RAID6");
 202                 break;
 203         default:
 204                 break;
 205         }
 206 }
 207
 208 /* Caller should ensure sizeof(*ret)>= 26 "OFF|SCANNING|INCONSISTENT" */
 209 static void qgroup_flags_to_str(u64 flags, char *ret)
 210 {
 211         if (flags & BTRFS_QGROUP_STATUS_FLAG_ON)
 212                 strcpy(ret, "ON");
 213         else
 214                 strcpy(ret, "OFF");
 215
 216         if (flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN)
 217                 strcat(ret, "|SCANNING");
 218         if (flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
 219                 strcat(ret, "|INCONSISTENT");
 220 }
 221
 222 void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
 223 {
 224         int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
 225         int i;
 226         char chunk_flags_str[32] = {0};
 227
 228         bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
 229         printf("\t\tlength %llu owner %llu stripe_len %llu type %s\n",
 230                (unsigned long long)btrfs_chunk_length(eb, chunk),
 231                (unsigned long long)btrfs_chunk_owner(eb, chunk),
 232                (unsigned long long)btrfs_chunk_stripe_len(eb, chunk),
 233                 chunk_flags_str);
 234         printf("\t\tio_align %u io_width %u sector_size %u\n",
 235                         btrfs_chunk_io_align(eb, chunk),
 236                         btrfs_chunk_io_width(eb, chunk),
 237                         btrfs_chunk_sector_size(eb, chunk));
 238         printf("\t\tnum_stripes %hu sub_stripes %hu\n", num_stripes,
 239                         btrfs_chunk_sub_stripes(eb, chunk));
 240         for (i = 0 ; i < num_stripes ; i++) {
 241                 unsigned char dev_uuid[BTRFS_UUID_SIZE];
 242                 char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
 243
 244                 read_extent_buffer(eb, dev_uuid,
 245                         (unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
 246                         BTRFS_UUID_SIZE);
 247                 uuid_unparse(dev_uuid, str_dev_uuid);
 248                 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
 249                       (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
 250                       (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
 251                 printf("\t\t\tdev uuid: %s\n", str_dev_uuid);
 252         }
 253 }
 254
 255 static void print_dev_item(struct extent_buffer *eb,
 256                            struct btrfs_dev_item *dev_item)
 257 {
 258         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 259         char fsid_str[BTRFS_UUID_UNPARSED_SIZE];
 260         u8 uuid[BTRFS_UUID_SIZE];
 261         u8 fsid[BTRFS_UUID_SIZE];
 262
 263         read_extent_buffer(eb, uuid,
 264                            (unsigned long)btrfs_device_uuid(dev_item),
 265                            BTRFS_UUID_SIZE);
 266         uuid_unparse(uuid, uuid_str);
 267         read_extent_buffer(eb, fsid,
 268                            (unsigned long)btrfs_device_fsid(dev_item),
 269                            BTRFS_UUID_SIZE);
 270         uuid_unparse(fsid, fsid_str);
 271         printf("\t\tdevid %llu total_bytes %llu bytes_used %Lu\n"
 272                "\t\tio_align %u io_width %u sector_size %u type %llu\n"
 273                "\t\tgeneration %llu start_offset %llu dev_group %u\n"
 274                "\t\tseek_speed %hhu bandwidth %hhu\n"
 275                "\t\tdev uuid %s\n"
 276                "\t\tfsid %s\n",
 277                (unsigned long long)btrfs_device_id(eb, dev_item),
 278                (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
 279                (unsigned long long)btrfs_device_bytes_used(eb, dev_item),
 280                btrfs_device_io_align(eb, dev_item),
 281                btrfs_device_io_width(eb, dev_item),
 282                btrfs_device_sector_size(eb, dev_item),
 283                (unsigned long long)btrfs_device_type(eb, dev_item),
 284                (unsigned long long)btrfs_device_generation(eb, dev_item),
 285                (unsigned long long)btrfs_device_start_offset(eb, dev_item),
 286                btrfs_device_group(eb, dev_item),
 287                btrfs_device_seek_speed(eb, dev_item),
 288                btrfs_device_bandwidth(eb, dev_item),
 289                uuid_str, fsid_str);
 290 }
 291
 292 static void print_uuids(struct extent_buffer *eb)
 293 {
 294         char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
 295         char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
 296         u8 disk_uuid[BTRFS_UUID_SIZE];
 297
 298         read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(),
 299                            BTRFS_FSID_SIZE);
 300
 301         fs_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 302         uuid_unparse(disk_uuid, fs_uuid);
 303
 304         read_extent_buffer(eb, disk_uuid,
 305                            btrfs_header_chunk_tree_uuid(eb),
 306                            BTRFS_UUID_SIZE);
 307
 308         chunk_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 309         uuid_unparse(disk_uuid, chunk_uuid);
 310         printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
 311 }
 312
 313 static void compress_type_to_str(u8 compress_type, char *ret)
 314 {
 315         switch (compress_type) {
 316         case BTRFS_COMPRESS_NONE:
 317                 strcpy(ret, "none");
 318                 break;
 319         case BTRFS_COMPRESS_ZLIB:
 320                 strcpy(ret, "zlib");
 321                 break;
 322         case BTRFS_COMPRESS_LZO:
 323                 strcpy(ret, "lzo");
 324                 break;
 325         default:
 326                 sprintf(ret, "UNKNOWN.%d", compress_type);
 327         }
 328 }
 329
 330 static void print_file_extent_item(struct extent_buffer *eb,
 331                                    struct btrfs_item *item,
 332                                    int slot,
 333                                    struct btrfs_file_extent_item *fi)
 334 {
 335         int extent_type = btrfs_file_extent_type(eb, fi);
 336         char compress_str[16];
 337
 338         compress_type_to_str(btrfs_file_extent_compression(eb, fi),
 339                              compress_str);
 340
 341         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 342                 printf("\t\tinline extent data size %u "
 343                        "ram %u compress(%s)\n",
 344                   btrfs_file_extent_inline_item_len(eb, item),
 345                   btrfs_file_extent_inline_len(eb, slot, fi),
 346                   compress_str);
 347                 return;
 348         }
 349         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 350                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 351                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 352                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 353                 printf("\t\tprealloc data offset %llu nr %llu\n",
 354                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 355                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 356                 return;
 357         }
 358         printf("\t\textent data disk byte %llu nr %llu\n",
 359                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 360                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 361         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 362                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 363                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 364                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 365         printf("\t\textent compression(%s)\n", compress_str);
 366 }
 367
 368 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 369 static void extent_flags_to_str(u64 flags, char *ret)
 370 {
 371         int empty = 1;
 372
 373         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 374                 empty = 0;
 375                 strcpy(ret, "DATA");
 376         }
 377         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 378                 if (!empty) {
 379                         empty = 0;
 380                         strcat(ret, "|");
 381                 }
 382                 strcat(ret, "TREE_BLOCK");
 383         }
 384         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 385                 strcat(ret, "|");
 386                 strcat(ret, "FULL_BACKREF");
 387         }
 388 }
 389
 390 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 391 {
 392         struct btrfs_extent_item *ei;
 393         struct btrfs_extent_inline_ref *iref;
 394         struct btrfs_extent_data_ref *dref;
 395         struct btrfs_shared_data_ref *sref;
 396         struct btrfs_disk_key key;
 397         unsigned long end;
 398         unsigned long ptr;
 399         int type;
 400         u32 item_size = btrfs_item_size_nr(eb, slot);
 401         u64 flags;
 402         u64 offset;
 403         char flags_str[32] = {0};
 404
 405         if (item_size < sizeof(*ei)) {
 406 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 407                 struct btrfs_extent_item_v0 *ei0;
 408                 BUG_ON(item_size != sizeof(*ei0));
 409                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 410                 printf("\t\textent refs %u\n",
 411                        btrfs_extent_refs_v0(eb, ei0));
 412                 return;
 413 #else
 414                 BUG();
 415 #endif
 416         }
 417
 418         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 419         flags = btrfs_extent_flags(eb, ei);
 420         extent_flags_to_str(flags, flags_str);
 421
 422         printf("\t\textent refs %llu gen %llu flags %s\n",
 423                (unsigned long long)btrfs_extent_refs(eb, ei),
 424                (unsigned long long)btrfs_extent_generation(eb, ei),
 425                flags_str);
 426
 427         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 428                 struct btrfs_tree_block_info *info;
 429                 info = (struct btrfs_tree_block_info *)(ei + 1);
 430                 btrfs_tree_block_key(eb, info, &key);
 431                 printf("\t\ttree block ");
 432                 btrfs_print_key(&key);
 433                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 434                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 435         } else if (metadata) {
 436                 struct btrfs_key tmp;
 437
 438                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 439                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 440                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 441         } else{
 442                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 443         }
 444
 445         ptr = (unsigned long)iref;
 446         end = (unsigned long)ei + item_size;
 447         while (ptr < end) {
 448                 iref = (struct btrfs_extent_inline_ref *)ptr;
 449                 type = btrfs_extent_inline_ref_type(eb, iref);
 450                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 451                 switch (type) {
 452                 case BTRFS_TREE_BLOCK_REF_KEY:
 453                         printf("\t\ttree block backref root %llu\n",
 454                                (unsigned long long)offset);
 455                         break;
 456                 case BTRFS_SHARED_BLOCK_REF_KEY:
 457                         printf("\t\tshared block backref parent %llu\n",
 458                                (unsigned long long)offset);
 459                         break;
 460                 case BTRFS_EXTENT_DATA_REF_KEY:
 461                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 462                         printf("\t\textent data backref root %llu "
 463                                "objectid %llu offset %llu count %u\n",
 464                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 465                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 466                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 467                                btrfs_extent_data_ref_count(eb, dref));
 468                         break;
 469                 case BTRFS_SHARED_DATA_REF_KEY:
 470                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 471                         printf("\t\tshared data backref parent %llu count %u\n",
 472                                (unsigned long long)offset,
 473                                btrfs_shared_data_ref_count(eb, sref));
 474                         break;
 475                 default:
 476                         return;
 477                 }
 478                 ptr += btrfs_extent_inline_ref_size(type);
 479         }
 480         WARN_ON(ptr > end);
 481 }
 482
 483 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 484 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 485 {
 486         struct btrfs_extent_ref_v0 *ref0;
 487
 488         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 489         printf("\t\textent back ref root %llu gen %llu "
 490                 "owner %llu num_refs %lu\n",
 491                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 492                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 493                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 494                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 495 }
 496 #endif
 497
 498 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 499 {
 500         struct btrfs_root_ref *ref;
 501         char namebuf[BTRFS_NAME_LEN];
 502         int namelen;
 503
 504         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 505         namelen = btrfs_root_ref_name_len(leaf, ref);
 506         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 507         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 508                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 509                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 510                namelen, namebuf);
 511 }
 512
 513 static int count_bytes(void *buf, int len, char b)
 514 {
 515         int cnt = 0;
 516         int i;
 517         for (i = 0; i < len; i++) {
 518                 if (((char*)buf)[i] == b)
 519                         cnt++;
 520         }
 521         return cnt;
 522 }
 523
 524 /*
 525  * Caller must ensure sizeof(*ret) >= 7 "RDONLY"
 526  */
 527 static void root_flags_to_str(u64 flags, char *ret)
 528 {
 529         if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
 530                 strcat(ret, "RDONLY");
 531         else
 532                 strcat(ret, "none");
 533 }
 534
 535 static void print_root(struct extent_buffer *leaf, int slot)
 536 {
 537         struct btrfs_root_item *ri;
 538         struct btrfs_root_item root_item;
 539         int len;
 540         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 541         char flags_str[32] = {0};
 542
 543         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 544         len = btrfs_item_size_nr(leaf, slot);
 545
 546         memset(&root_item, 0, sizeof(root_item));
 547         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 548         root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
 549
 550         printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %llu\n",
 551                 (unsigned long long)btrfs_root_bytenr(&root_item),
 552                 btrfs_root_level(&root_item),
 553                 (unsigned long long)btrfs_root_dirid(&root_item),
 554                 btrfs_root_refs(&root_item),
 555                 (unsigned long long)btrfs_root_generation(&root_item),
 556                 (unsigned long long)btrfs_root_last_snapshot(&root_item));
 557         printf("\t\tflags 0x%llx(%s)\n", btrfs_root_flags(&root_item),
 558                flags_str);
 559
 560         if (root_item.generation == root_item.generation_v2) {
 561                 uuid_unparse(root_item.uuid, uuid_str);
 562                 printf("\t\tuuid %s\n", uuid_str);
 563                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 564                         uuid_unparse(root_item.parent_uuid, uuid_str);
 565                         printf("\t\tparent_uuid %s\n", uuid_str);
 566                 }
 567                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 568                         uuid_unparse(root_item.received_uuid, uuid_str);
 569                         printf("\t\treceived_uuid %s\n", uuid_str);
 570                 }
 571                 if (root_item.ctransid) {
 572                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 573                                 btrfs_root_ctransid(&root_item),
 574                                 btrfs_root_otransid(&root_item),
 575                                 btrfs_root_stransid(&root_item),
 576                                 btrfs_root_rtransid(&root_item));
 577                 }
 578         }
 579         if (btrfs_root_refs(&root_item) == 0) {
 580                 struct btrfs_key drop_key;
 581                 btrfs_disk_key_to_cpu(&drop_key,
 582                                       &root_item.drop_progress);
 583                 printf("\t\tdrop ");
 584                 btrfs_print_key(&root_item.drop_progress);
 585                 printf(" level %d\n", root_item.drop_level);
 586         }
 587 }
 588
 589 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 590 {
 591         struct btrfs_free_space_header *header;
 592         struct btrfs_disk_key location;
 593
 594         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 595         btrfs_free_space_key(leaf, header, &location);
 596         printf("\t\tlocation ");
 597         btrfs_print_key(&location);
 598         printf("\n");
 599         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 600                (unsigned long long)btrfs_free_space_generation(leaf, header),
 601                (unsigned long long)btrfs_free_space_entries(leaf, header),
 602                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 603 }
 604
 605 void print_key_type(FILE *stream, u64 objectid, u8 type)
 606 {
 607         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 608                 fprintf(stream, "UNTYPED");
 609                 return;
 610         }
 611
 612         switch (type) {
 613         case BTRFS_INODE_ITEM_KEY:
 614                 fprintf(stream, "INODE_ITEM");
 615                 break;
 616         case BTRFS_INODE_REF_KEY:
 617                 fprintf(stream, "INODE_REF");
 618                 break;
 619         case BTRFS_INODE_EXTREF_KEY:
 620                 fprintf(stream, "INODE_EXTREF");
 621                 break;
 622         case BTRFS_DIR_ITEM_KEY:
 623                 fprintf(stream, "DIR_ITEM");
 624                 break;
 625         case BTRFS_DIR_INDEX_KEY:
 626                 fprintf(stream, "DIR_INDEX");
 627                 break;
 628         case BTRFS_DIR_LOG_ITEM_KEY:
 629                 fprintf(stream, "DIR_LOG_ITEM");
 630                 break;
 631         case BTRFS_DIR_LOG_INDEX_KEY:
 632                 fprintf(stream, "DIR_LOG_INDEX");
 633                 break;
 634         case BTRFS_XATTR_ITEM_KEY:
 635                 fprintf(stream, "XATTR_ITEM");
 636                 break;
 637         case BTRFS_ORPHAN_ITEM_KEY:
 638                 fprintf(stream, "ORPHAN_ITEM");
 639                 break;
 640         case BTRFS_ROOT_ITEM_KEY:
 641                 fprintf(stream, "ROOT_ITEM");
 642                 break;
 643         case BTRFS_ROOT_REF_KEY:
 644                 fprintf(stream, "ROOT_REF");
 645                 break;
 646         case BTRFS_ROOT_BACKREF_KEY:
 647                 fprintf(stream, "ROOT_BACKREF");
 648                 break;
 649         case BTRFS_EXTENT_ITEM_KEY:
 650                 fprintf(stream, "EXTENT_ITEM");
 651                 break;
 652         case BTRFS_METADATA_ITEM_KEY:
 653                 fprintf(stream, "METADATA_ITEM");
 654                 break;
 655         case BTRFS_TREE_BLOCK_REF_KEY:
 656                 fprintf(stream, "TREE_BLOCK_REF");
 657                 break;
 658         case BTRFS_SHARED_BLOCK_REF_KEY:
 659                 fprintf(stream, "SHARED_BLOCK_REF");
 660                 break;
 661         case BTRFS_EXTENT_DATA_REF_KEY:
 662                 fprintf(stream, "EXTENT_DATA_REF");
 663                 break;
 664         case BTRFS_SHARED_DATA_REF_KEY:
 665                 fprintf(stream, "SHARED_DATA_REF");
 666                 break;
 667         case BTRFS_EXTENT_REF_V0_KEY:
 668                 fprintf(stream, "EXTENT_REF_V0");
 669                 break;
 670         case BTRFS_CSUM_ITEM_KEY:
 671                 fprintf(stream, "CSUM_ITEM");
 672                 break;
 673         case BTRFS_EXTENT_CSUM_KEY:
 674                 fprintf(stream, "EXTENT_CSUM");
 675                 break;
 676         case BTRFS_EXTENT_DATA_KEY:
 677                 fprintf(stream, "EXTENT_DATA");
 678                 break;
 679         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 680                 fprintf(stream, "BLOCK_GROUP_ITEM");
 681                 break;
 682         case BTRFS_FREE_SPACE_INFO_KEY:
 683                 fprintf(stream, "FREE_SPACE_INFO");
 684                 break;
 685         case BTRFS_FREE_SPACE_EXTENT_KEY:
 686                 fprintf(stream, "FREE_SPACE_EXTENT");
 687                 break;
 688         case BTRFS_FREE_SPACE_BITMAP_KEY:
 689                 fprintf(stream, "FREE_SPACE_BITMAP");
 690                 break;
 691         case BTRFS_CHUNK_ITEM_KEY:
 692                 fprintf(stream, "CHUNK_ITEM");
 693                 break;
 694         case BTRFS_DEV_ITEM_KEY:
 695                 fprintf(stream, "DEV_ITEM");
 696                 break;
 697         case BTRFS_DEV_EXTENT_KEY:
 698                 fprintf(stream, "DEV_EXTENT");
 699                 break;
 700         case BTRFS_BALANCE_ITEM_KEY:
 701                 fprintf(stream, "BALANCE_ITEM");
 702                 break;
 703         case BTRFS_DEV_REPLACE_KEY:
 704                 fprintf(stream, "DEV_REPLACE");
 705                 break;
 706         case BTRFS_STRING_ITEM_KEY:
 707                 fprintf(stream, "STRING_ITEM");
 708                 break;
 709         case BTRFS_QGROUP_STATUS_KEY:
 710                 fprintf(stream, "QGROUP_STATUS");
 711                 break;
 712         case BTRFS_QGROUP_RELATION_KEY:
 713                 fprintf(stream, "QGROUP_RELATION");
 714                 break;
 715         case BTRFS_QGROUP_INFO_KEY:
 716                 fprintf(stream, "QGROUP_INFO");
 717                 break;
 718         case BTRFS_QGROUP_LIMIT_KEY:
 719                 fprintf(stream, "QGROUP_LIMIT");
 720                 break;
 721         case BTRFS_DEV_STATS_KEY:
 722                 fprintf(stream, "DEV_STATS");
 723                 break;
 724         case BTRFS_UUID_KEY_SUBVOL:
 725                 fprintf(stream, "UUID_KEY_SUBVOL");
 726                 break;
 727         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 728                 fprintf(stream, "UUID_KEY_RECEIVED_SUBVOL");
 729                 break;
 730         default:
 731                 fprintf(stream, "UNKNOWN.%d", type);
 732         };
 733 }
 734
 735 void print_objectid(FILE *stream, u64 objectid, u8 type)
 736 {
 737         switch (type) {
 738         case BTRFS_DEV_EXTENT_KEY:
 739                 /* device id */
 740                 fprintf(stream, "%llu", (unsigned long long)objectid);
 741                 return;
 742         case BTRFS_QGROUP_RELATION_KEY:
 743                 fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
 744                        btrfs_qgroup_subvid(objectid));
 745                 return;
 746         case BTRFS_UUID_KEY_SUBVOL:
 747         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 748                 fprintf(stream, "0x%016llx", (unsigned long long)objectid);
 749                 return;
 750         }
 751
 752         switch (objectid) {
 753         case BTRFS_ROOT_TREE_OBJECTID:
 754                 if (type == BTRFS_DEV_ITEM_KEY)
 755                         fprintf(stream, "DEV_ITEMS");
 756                 else
 757                         fprintf(stream, "ROOT_TREE");
 758                 break;
 759         case BTRFS_EXTENT_TREE_OBJECTID:
 760                 fprintf(stream, "EXTENT_TREE");
 761                 break;
 762         case BTRFS_CHUNK_TREE_OBJECTID:
 763                 fprintf(stream, "CHUNK_TREE");
 764                 break;
 765         case BTRFS_DEV_TREE_OBJECTID:
 766                 fprintf(stream, "DEV_TREE");
 767                 break;
 768         case BTRFS_FS_TREE_OBJECTID:
 769                 fprintf(stream, "FS_TREE");
 770                 break;
 771         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 772                 fprintf(stream, "ROOT_TREE_DIR");
 773                 break;
 774         case BTRFS_CSUM_TREE_OBJECTID:
 775                 fprintf(stream, "CSUM_TREE");
 776                 break;
 777         case BTRFS_BALANCE_OBJECTID:
 778                 fprintf(stream, "BALANCE");
 779                 break;
 780         case BTRFS_ORPHAN_OBJECTID:
 781                 fprintf(stream, "ORPHAN");
 782                 break;
 783         case BTRFS_TREE_LOG_OBJECTID:
 784                 fprintf(stream, "TREE_LOG");
 785                 break;
 786         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 787                 fprintf(stream, "LOG_FIXUP");
 788                 break;
 789         case BTRFS_TREE_RELOC_OBJECTID:
 790                 fprintf(stream, "TREE_RELOC");
 791                 break;
 792         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 793                 fprintf(stream, "DATA_RELOC_TREE");
 794                 break;
 795         case BTRFS_EXTENT_CSUM_OBJECTID:
 796                 fprintf(stream, "EXTENT_CSUM");
 797                 break;
 798         case BTRFS_FREE_SPACE_OBJECTID:
 799                 fprintf(stream, "FREE_SPACE");
 800                 break;
 801         case BTRFS_FREE_INO_OBJECTID:
 802                 fprintf(stream, "FREE_INO");
 803                 break;
 804         case BTRFS_QUOTA_TREE_OBJECTID:
 805                 fprintf(stream, "QUOTA_TREE");
 806                 break;
 807         case BTRFS_UUID_TREE_OBJECTID:
 808                 fprintf(stream, "UUID_TREE");
 809                 break;
 810         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 811                 fprintf(stream, "FREE_SPACE_TREE");
 812                 break;
 813         case BTRFS_MULTIPLE_OBJECTIDS:
 814                 fprintf(stream, "MULTIPLE");
 815                 break;
 816         case (u64)-1:
 817                 fprintf(stream, "-1");
 818                 break;
 819         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 820                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 821                         fprintf(stream, "FIRST_CHUNK_TREE");
 822                         break;
 823                 }
 824                 /* fall-thru */
 825         default:
 826                 fprintf(stream, "%llu", (unsigned long long)objectid);
 827         }
 828 }
 829
 830 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 831 {
 832         u64 objectid = btrfs_disk_key_objectid(disk_key);
 833         u8 type = btrfs_disk_key_type(disk_key);
 834         u64 offset = btrfs_disk_key_offset(disk_key);
 835
 836         printf("key (");
 837         print_objectid(stdout, objectid, type);
 838         printf(" ");
 839         print_key_type(stdout, objectid, type);
 840         switch (type) {
 841         case BTRFS_QGROUP_RELATION_KEY:
 842         case BTRFS_QGROUP_INFO_KEY:
 843         case BTRFS_QGROUP_LIMIT_KEY:
 844                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 845                        btrfs_qgroup_subvid(offset));
 846                 break;
 847         case BTRFS_UUID_KEY_SUBVOL:
 848         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 849                 printf(" 0x%016llx)", (unsigned long long)offset);
 850                 break;
 851         default:
 852                 if (offset == (u64)-1)
 853                         printf(" -1)");
 854                 else
 855                         printf(" %llu)", (unsigned long long)offset);
 856                 break;
 857         }
 858 }
 859
 860 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 861                             u32 item_size)
 862 {
 863         if (item_size & (sizeof(u64) - 1)) {
 864                 printf("btrfs: uuid item with illegal size %lu!\n",
 865                        (unsigned long)item_size);
 866                 return;
 867         }
 868         while (item_size) {
 869                 __le64 subvol_id;
 870
 871                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 872                 printf("\t\tsubvol_id %llu\n",
 873                         (unsigned long long)le64_to_cpu(subvol_id));
 874                 item_size -= sizeof(u64);
 875                 offset += sizeof(u64);
 876         }
 877 }
 878
 879 /* Btrfs inode flag stringification helper */
 880 #define STRCAT_ONE_INODE_FLAG(flags, name, empty, dst) ({                       \
 881         if (flags & BTRFS_INODE_##name) {                               \
 882                 if (!empty)                                             \
 883                         strcat(dst, "|");                               \
 884                 strcat(dst, #name);                                     \
 885                 empty = 0;                                              \
 886         }                                                               \
 887 })
 888
 889 /*
 890  * Caller should ensure sizeof(*ret) >= 102: all charactors plus '|' of
 891  * BTRFS_INODE_* flags
 892  */
 893 static void inode_flags_to_str(u64 flags, char *ret)
 894 {
 895         int empty = 1;
 896
 897         STRCAT_ONE_INODE_FLAG(flags, NODATASUM, empty, ret);
 898         STRCAT_ONE_INODE_FLAG(flags, NODATACOW, empty, ret);
 899         STRCAT_ONE_INODE_FLAG(flags, READONLY, empty, ret);
 900         STRCAT_ONE_INODE_FLAG(flags, NOCOMPRESS, empty, ret);
 901         STRCAT_ONE_INODE_FLAG(flags, PREALLOC, empty, ret);
 902         STRCAT_ONE_INODE_FLAG(flags, SYNC, empty, ret);
 903         STRCAT_ONE_INODE_FLAG(flags, IMMUTABLE, empty, ret);
 904         STRCAT_ONE_INODE_FLAG(flags, APPEND, empty, ret);
 905         STRCAT_ONE_INODE_FLAG(flags, NODUMP, empty, ret);
 906         STRCAT_ONE_INODE_FLAG(flags, NOATIME, empty, ret);
 907         STRCAT_ONE_INODE_FLAG(flags, DIRSYNC, empty, ret);
 908         STRCAT_ONE_INODE_FLAG(flags, COMPRESS, empty, ret);
 909         if (empty)
 910                 strcat(ret, "none");
 911 }
 912
 913 static void print_timespec(struct extent_buffer *eb,
 914                 struct btrfs_timespec *timespec, const char *prefix,
 915                 const char *suffix)
 916 {
 917         struct tm tm;
 918         u64 tmp_u64;
 919         u32 tmp_u32;
 920         time_t tmp_time;
 921         char timestamp[256];
 922
 923         tmp_u64 = btrfs_timespec_sec(eb, timespec);
 924         tmp_u32 = btrfs_timespec_nsec(eb, timespec);
 925         tmp_time = tmp_u64;
 926         localtime_r(&tmp_time, &tm);
 927         strftime(timestamp, sizeof(timestamp),
 928                         "%Y-%m-%d %H:%M:%S", &tm);
 929         printf("%s%llu.%u (%s)%s", prefix, (unsigned long long)tmp_u64, tmp_u32,
 930                         timestamp, suffix);
 931 }
 932
 933 static void print_inode_item(struct extent_buffer *eb, struct btrfs_item *item,
 934                                 struct btrfs_inode_item *ii)
 935 {
 936         char flags_str[256];
 937
 938         memset(flags_str, 0, sizeof(flags_str));
 939         inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
 940         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 941                "\t\tblock group %llu mode %o links %u uid %u gid %u rdev %llu\n"
 942                "\t\tsequence %llu flags 0x%llx(%s)\n",
 943                (unsigned long long)btrfs_inode_generation(eb, ii),
 944                (unsigned long long)btrfs_inode_transid(eb, ii),
 945                (unsigned long long)btrfs_inode_size(eb, ii),
 946                (unsigned long long)btrfs_inode_nbytes(eb, ii),
 947                (unsigned long long)btrfs_inode_block_group(eb,ii),
 948                btrfs_inode_mode(eb, ii),
 949                btrfs_inode_nlink(eb, ii),
 950                btrfs_inode_uid(eb, ii),
 951                btrfs_inode_gid(eb, ii),
 952                (unsigned long long)btrfs_inode_rdev(eb,ii),
 953                (unsigned long long)btrfs_inode_flags(eb,ii),
 954                (unsigned long long)btrfs_inode_sequence(eb, ii),
 955                flags_str);
 956         print_timespec(eb, btrfs_inode_atime(ii), "\t\tatime ", "\n");
 957         print_timespec(eb, btrfs_inode_ctime(ii), "\t\tctime ", "\n");
 958         print_timespec(eb, btrfs_inode_mtime(ii), "\t\tmtime ", "\n");
 959         print_timespec(eb, btrfs_inode_otime(ii), "\t\totime ", "\n");
 960 }
 961
 962 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 963 {
 964         int i;
 965         char *str;
 966         struct btrfs_item *item;
 967         struct btrfs_dir_item *di;
 968         struct btrfs_inode_item *ii;
 969         struct btrfs_file_extent_item *fi;
 970         struct btrfs_block_group_item *bi;
 971         struct btrfs_extent_data_ref *dref;
 972         struct btrfs_shared_data_ref *sref;
 973         struct btrfs_inode_ref *iref;
 974         struct btrfs_inode_extref *iref2;
 975         struct btrfs_dev_extent *dev_extent;
 976         struct btrfs_disk_key disk_key;
 977         struct btrfs_block_group_item bg_item;
 978         struct btrfs_free_space_info *free_info;
 979         struct btrfs_dir_log_item *dlog;
 980         struct btrfs_qgroup_info_item *qg_info;
 981         struct btrfs_qgroup_limit_item *qg_limit;
 982         struct btrfs_qgroup_status_item *qg_status;
 983         u32 nr = btrfs_header_nritems(l);
 984         u64 objectid;
 985         u32 type;
 986         char flags_str[256];
 987         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 988         u8 uuid[BTRFS_UUID_SIZE];
 989
 990         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 991                 (unsigned long long)btrfs_header_bytenr(l), nr,
 992                 btrfs_leaf_free_space(root, l),
 993                 (unsigned long long)btrfs_header_generation(l),
 994                 (unsigned long long)btrfs_header_owner(l));
 995         print_uuids(l);
 996         fflush(stdout);
 997         for (i = 0 ; i < nr ; i++) {
 998                 item = btrfs_item_nr(i);
 999                 btrfs_item_key(l, &disk_key, i);
1000                 objectid = btrfs_disk_key_objectid(&disk_key);
1001                 type = btrfs_disk_key_type(&disk_key);
1002                 printf("\titem %d ", i);
1003                 btrfs_print_key(&disk_key);
1004                 printf(" itemoff %d itemsize %d\n",
1005                         btrfs_item_offset(l, item),
1006                         btrfs_item_size(l, item));
1007
1008                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
1009                         print_free_space_header(l, i);
1010
1011                 switch (type) {
1012                 case BTRFS_INODE_ITEM_KEY:
1013                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
1014                         print_inode_item(l, item, ii);
1015                         break;
1016                 case BTRFS_INODE_REF_KEY:
1017                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
1018                         print_inode_ref_item(l, item, iref);
1019                         break;
1020                 case BTRFS_INODE_EXTREF_KEY:
1021                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
1022                         print_inode_extref_item(l, item, iref2);
1023                         break;
1024                 case BTRFS_DIR_ITEM_KEY:
1025                 case BTRFS_DIR_INDEX_KEY:
1026                 case BTRFS_XATTR_ITEM_KEY:
1027                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
1028                         print_dir_item(l, item, di);
1029                         break;
1030                 case BTRFS_DIR_LOG_INDEX_KEY:
1031                 case BTRFS_DIR_LOG_ITEM_KEY:
1032                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
1033                         printf("\t\tdir log end %Lu\n",
1034                                (unsigned long long)btrfs_dir_log_end(l, dlog));
1035                        break;
1036                 case BTRFS_ORPHAN_ITEM_KEY:
1037                         printf("\t\torphan item\n");
1038                         break;
1039                 case BTRFS_ROOT_ITEM_KEY:
1040                         print_root(l, i);
1041                         break;
1042                 case BTRFS_ROOT_REF_KEY:
1043                         print_root_ref(l, i, "ref");
1044                         break;
1045                 case BTRFS_ROOT_BACKREF_KEY:
1046                         print_root_ref(l, i, "backref");
1047                         break;
1048                 case BTRFS_EXTENT_ITEM_KEY:
1049                         print_extent_item(l, i, 0);
1050                         break;
1051                 case BTRFS_METADATA_ITEM_KEY:
1052                         print_extent_item(l, i, 1);
1053                         break;
1054                 case BTRFS_TREE_BLOCK_REF_KEY:
1055                         printf("\t\ttree block backref\n");
1056                         break;
1057                 case BTRFS_SHARED_BLOCK_REF_KEY:
1058                         printf("\t\tshared block backref\n");
1059                         break;
1060                 case BTRFS_EXTENT_DATA_REF_KEY:
1061                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
1062                         printf("\t\textent data backref root %llu "
1063                                "objectid %llu offset %llu count %u\n",
1064                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
1065                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
1066                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
1067                                btrfs_extent_data_ref_count(l, dref));
1068                         break;
1069                 case BTRFS_SHARED_DATA_REF_KEY:
1070                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
1071                         printf("\t\tshared data backref count %u\n",
1072                                btrfs_shared_data_ref_count(l, sref));
1073                         break;
1074                 case BTRFS_EXTENT_REF_V0_KEY:
1075 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
1076                         print_extent_ref_v0(l, i);
1077 #else
1078                         BUG();
1079 #endif
1080                         break;
1081                 case BTRFS_CSUM_ITEM_KEY:
1082                         printf("\t\tcsum item\n");
1083                         break;
1084                 case BTRFS_EXTENT_CSUM_KEY:
1085                         printf("\t\textent csum item\n");
1086                         break;
1087                 case BTRFS_EXTENT_DATA_KEY:
1088                         fi = btrfs_item_ptr(l, i,
1089                                             struct btrfs_file_extent_item);
1090                         print_file_extent_item(l, item, i, fi);
1091                         break;
1092                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
1093                         bi = btrfs_item_ptr(l, i,
1094                                             struct btrfs_block_group_item);
1095                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
1096                                            sizeof(bg_item));
1097                         memset(flags_str, 0, sizeof(flags_str));
1098                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
1099                                         flags_str);
1100                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
1101                                (unsigned long long)btrfs_block_group_used(&bg_item),
1102                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
1103                                flags_str);
1104                         break;
1105                 case BTRFS_FREE_SPACE_INFO_KEY:
1106                         free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
1107                         printf("\t\tfree space info extent count %u flags %u\n",
1108                                (unsigned)btrfs_free_space_extent_count(l, free_info),
1109                                (unsigned)btrfs_free_space_flags(l, free_info));
1110                         break;
1111                 case BTRFS_FREE_SPACE_EXTENT_KEY:
1112                         printf("\t\tfree space extent\n");
1113                         break;
1114                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1115                         printf("\t\tfree space bitmap\n");
1116                         break;
1117                 case BTRFS_CHUNK_ITEM_KEY:
1118                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
1119                         break;
1120                 case BTRFS_DEV_ITEM_KEY:
1121                         print_dev_item(l, btrfs_item_ptr(l, i,
1122                                         struct btrfs_dev_item));
1123                         break;
1124                 case BTRFS_DEV_EXTENT_KEY:
1125                         dev_extent = btrfs_item_ptr(l, i,
1126                                                     struct btrfs_dev_extent);
1127                         read_extent_buffer(l, uuid,
1128                                 (unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
1129                                 BTRFS_UUID_SIZE);
1130                         uuid_unparse(uuid, uuid_str);
1131                         printf("\t\tdev extent chunk_tree %llu\n"
1132                                "\t\tchunk objectid %llu chunk offset %llu "
1133                                "length %llu\n"
1134                                "\t\tchunk_tree_uuid %s\n",
1135                                (unsigned long long)
1136                                btrfs_dev_extent_chunk_tree(l, dev_extent),
1137                                (unsigned long long)
1138                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
1139                                (unsigned long long)
1140                                btrfs_dev_extent_chunk_offset(l, dev_extent),
1141                                (unsigned long long)
1142                                btrfs_dev_extent_length(l, dev_extent),
1143                                uuid_str);
1144                         break;
1145                 case BTRFS_QGROUP_STATUS_KEY:
1146                         qg_status = btrfs_item_ptr(l, i,
1147                                         struct btrfs_qgroup_status_item);
1148                         memset(flags_str, 0, sizeof(flags_str));
1149                         qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
1150                                         flags_str);
1151                         printf("\t\tversion %llu generation %llu flags %s "
1152                                 "scan %lld\n",
1153                                 (unsigned long long)
1154                                 btrfs_qgroup_status_version(l, qg_status),
1155                                 (unsigned long long)
1156                                 btrfs_qgroup_status_generation(l, qg_status),
1157                                 flags_str,
1158                                 (unsigned long long)
1159                                 btrfs_qgroup_status_rescan(l, qg_status));
1160                         break;
1161                 case BTRFS_QGROUP_RELATION_KEY:
1162                         break;
1163                 case BTRFS_QGROUP_INFO_KEY:
1164                         qg_info = btrfs_item_ptr(l, i,
1165                                                  struct btrfs_qgroup_info_item);
1166                         printf("\t\tgeneration %llu\n"
1167                              "\t\treferenced %llu referenced compressed %llu\n"
1168                              "\t\texclusive %llu exclusive compressed %llu\n",
1169                                (unsigned long long)
1170                                btrfs_qgroup_info_generation(l, qg_info),
1171                                (unsigned long long)
1172                                btrfs_qgroup_info_referenced(l, qg_info),
1173                                (unsigned long long)
1174                                btrfs_qgroup_info_referenced_compressed(l,
1175                                                                        qg_info),
1176                                (unsigned long long)
1177                                btrfs_qgroup_info_exclusive(l, qg_info),
1178                                (unsigned long long)
1179                                btrfs_qgroup_info_exclusive_compressed(l,
1180                                                                       qg_info));
1181                         break;
1182                 case BTRFS_QGROUP_LIMIT_KEY:
1183                         qg_limit = btrfs_item_ptr(l, i,
1184                                          struct btrfs_qgroup_limit_item);
1185                         printf("\t\tflags %llx\n"
1186                              "\t\tmax referenced %lld max exclusive %lld\n"
1187                              "\t\trsv referenced %lld rsv exclusive %lld\n",
1188                                (unsigned long long)
1189                                btrfs_qgroup_limit_flags(l, qg_limit),
1190                                (long long)
1191                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
1192                                (long long)
1193                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
1194                                (long long)
1195                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
1196                                (long long)
1197                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
1198                         break;
1199                 case BTRFS_UUID_KEY_SUBVOL:
1200                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1201                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
1202                                         btrfs_item_size_nr(l, i));
1203                         break;
1204                 case BTRFS_STRING_ITEM_KEY:
1205                         /* dirty, but it's simple */
1206                         str = l->data + btrfs_item_ptr_offset(l, i);
1207                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
1208                         break;
1209                 case BTRFS_DEV_STATS_KEY:
1210                         printf("\t\tdevice stats\n");
1211                         break;
1212                 };
1213                 fflush(stdout);
1214         }
1215 }
1216
1217 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1218 {
1219         int i;
1220         u32 nr;
1221         u32 size;
1222         struct btrfs_disk_key disk_key;
1223         struct btrfs_key key;
1224         struct extent_buffer *next;
1225
1226         if (!eb)
1227                 return;
1228         nr = btrfs_header_nritems(eb);
1229         if (btrfs_is_leaf(eb)) {
1230                 btrfs_print_leaf(root, eb);
1231                 return;
1232         }
1233         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1234                (unsigned long long)eb->start,
1235                 btrfs_header_level(eb), nr,
1236                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1237                 (unsigned long long)btrfs_header_generation(eb),
1238                 (unsigned long long)btrfs_header_owner(eb));
1239         print_uuids(eb);
1240         fflush(stdout);
1241         size = root->nodesize;
1242         for (i = 0; i < nr; i++) {
1243                 u64 blocknr = btrfs_node_blockptr(eb, i);
1244                 btrfs_node_key(eb, &disk_key, i);
1245                 btrfs_disk_key_to_cpu(&key, &disk_key);
1246                 printf("\t");
1247                 btrfs_print_key(&disk_key);
1248                 printf(" block %llu (%llu) gen %llu\n",
1249                        (unsigned long long)blocknr,
1250                        (unsigned long long)blocknr / size,
1251                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1252                 fflush(stdout);
1253         }
1254         if (!follow)
1255                 return;
1256
1257         for (i = 0; i < nr; i++) {
1258                 next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
1259                                 btrfs_node_ptr_generation(eb, i));
1260                 if (!extent_buffer_uptodate(next)) {
1261                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1262                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1263                                 (unsigned long long)btrfs_header_owner(eb));
1264                         continue;
1265                 }
1266                 if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
1267                         warning(
1268         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1269                                 i, btrfs_header_level(next),
1270                                 btrfs_header_level(eb));
1271                         goto out;
1272                 }
1273                 if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
1274                         warning(
1275         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1276                                 i, btrfs_header_level(next),
1277                                 btrfs_header_level(eb));
1278                         goto out;
1279                 }
1280                 btrfs_print_tree(root, next, 1);
1281                 free_extent_buffer(next);
1282         }
1283
1284         return;
1285
1286 out:
1287         free_extent_buffer(next);
1288 }