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, u32 size,
  66                           struct btrfs_dir_item *di)
  67 {
  68         u32 cur = 0;
  69         u32 len;
  70         u32 name_len;
  71         u32 data_len;
  72         char namebuf[BTRFS_NAME_LEN];
  73         struct btrfs_disk_key location;
  74
  75         while (cur < size) {
  76                 btrfs_dir_item_key(eb, di, &location);
  77                 printf("\t\tlocation ");
  78                 btrfs_print_key(&location);
  79                 printf(" type ");
  80                 print_dir_item_type(eb, di);
  81                 printf("\n");
  82                 name_len = btrfs_dir_name_len(eb, di);
  83                 data_len = btrfs_dir_data_len(eb, di);
  84                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
  85                 read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
  86                 printf("\t\ttransid %llu data_len %u name_len %u\n",
  87                                 btrfs_dir_transid(eb, di),
  88                                 data_len, name_len);
  89                 printf("\t\tname: %.*s\n", 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, u32 size,
 104                 struct btrfs_inode_extref *extref)
 105 {
 106         u32 cur = 0;
 107         u32 len;
 108         u32 name_len = 0;
 109         u64 index = 0;
 110         u64 parent_objid;
 111         char namebuf[BTRFS_NAME_LEN];
 112
 113         while (cur < size) {
 114                 index = btrfs_inode_extref_index(eb, extref);
 115                 name_len = btrfs_inode_extref_name_len(eb, extref);
 116                 parent_objid = btrfs_inode_extref_parent(eb, extref);
 117
 118                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 119
 120                 read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len);
 121
 122                 printf("\t\tinode extref index %llu parent %llu namelen %u "
 123                        "name: %.*s\n",
 124                        (unsigned long long)index,
 125                        (unsigned long long)parent_objid,
 126                        name_len, len, namebuf);
 127
 128                 len = sizeof(*extref) + name_len;
 129                 extref = (struct btrfs_inode_extref *)((char *)extref + len);
 130                 cur += len;
 131         }
 132         return 0;
 133 }
 134
 135 static int print_inode_ref_item(struct extent_buffer *eb, u32 size,
 136                                 struct btrfs_inode_ref *ref)
 137 {
 138         u32 cur = 0;
 139         u32 len;
 140         u32 name_len;
 141         u64 index;
 142         char namebuf[BTRFS_NAME_LEN];
 143
 144         while (cur < size) {
 145                 name_len = btrfs_inode_ref_name_len(eb, ref);
 146                 index = btrfs_inode_ref_index(eb, ref);
 147                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 148                 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
 149                 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
 150                        (unsigned long long)index, name_len, len, namebuf);
 151                 len = sizeof(*ref) + name_len;
 152                 ref = (struct btrfs_inode_ref *)((char *)ref + len);
 153                 cur += len;
 154         }
 155         return 0;
 156 }
 157
 158 /* Caller should ensure sizeof(*ret)>=21 "DATA|METADATA|RAID10" */
 159 static void bg_flags_to_str(u64 flags, char *ret)
 160 {
 161         int empty = 1;
 162
 163         if (flags & BTRFS_BLOCK_GROUP_DATA) {
 164                 empty = 0;
 165                 strcpy(ret, "DATA");
 166         }
 167         if (flags & BTRFS_BLOCK_GROUP_METADATA) {
 168                 if (!empty)
 169                         strcat(ret, "|");
 170                 strcat(ret, "METADATA");
 171         }
 172         if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
 173                 if (!empty)
 174                         strcat(ret, "|");
 175                 strcat(ret, "SYSTEM");
 176         }
 177         switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
 178         case BTRFS_BLOCK_GROUP_RAID0:
 179                 strcat(ret, "|RAID0");
 180                 break;
 181         case BTRFS_BLOCK_GROUP_RAID1:
 182                 strcat(ret, "|RAID1");
 183                 break;
 184         case BTRFS_BLOCK_GROUP_DUP:
 185                 strcat(ret, "|DUP");
 186                 break;
 187         case BTRFS_BLOCK_GROUP_RAID10:
 188                 strcat(ret, "|RAID10");
 189                 break;
 190         case BTRFS_BLOCK_GROUP_RAID5:
 191                 strcat(ret, "|RAID5");
 192                 break;
 193         case BTRFS_BLOCK_GROUP_RAID6:
 194                 strcat(ret, "|RAID6");
 195                 break;
 196         default:
 197                 break;
 198         }
 199 }
 200
 201 /* Caller should ensure sizeof(*ret)>= 26 "OFF|SCANNING|INCONSISTENT" */
 202 static void qgroup_flags_to_str(u64 flags, char *ret)
 203 {
 204         if (flags & BTRFS_QGROUP_STATUS_FLAG_ON)
 205                 strcpy(ret, "ON");
 206         else
 207                 strcpy(ret, "OFF");
 208
 209         if (flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN)
 210                 strcat(ret, "|SCANNING");
 211         if (flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
 212                 strcat(ret, "|INCONSISTENT");
 213 }
 214
 215 void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
 216 {
 217         int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
 218         int i;
 219         char chunk_flags_str[32] = {0};
 220
 221         bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
 222         printf("\t\tlength %llu owner %llu stripe_len %llu type %s\n",
 223                (unsigned long long)btrfs_chunk_length(eb, chunk),
 224                (unsigned long long)btrfs_chunk_owner(eb, chunk),
 225                (unsigned long long)btrfs_chunk_stripe_len(eb, chunk),
 226                 chunk_flags_str);
 227         printf("\t\tio_align %u io_width %u sector_size %u\n",
 228                         btrfs_chunk_io_align(eb, chunk),
 229                         btrfs_chunk_io_width(eb, chunk),
 230                         btrfs_chunk_sector_size(eb, chunk));
 231         printf("\t\tnum_stripes %hu sub_stripes %hu\n", num_stripes,
 232                         btrfs_chunk_sub_stripes(eb, chunk));
 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\tuuid %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 const char* file_extent_type_to_str(u8 type)
 324 {
 325         switch (type) {
 326         case BTRFS_FILE_EXTENT_INLINE: return "inline";
 327         case BTRFS_FILE_EXTENT_PREALLOC: return "prealloc";
 328         case BTRFS_FILE_EXTENT_REG: return "regular";
 329         default: return "unknown";
 330         }
 331 }
 332
 333 static void print_file_extent_item(struct extent_buffer *eb,
 334                                    struct btrfs_item *item,
 335                                    int slot,
 336                                    struct btrfs_file_extent_item *fi)
 337 {
 338         int extent_type = btrfs_file_extent_type(eb, fi);
 339         char compress_str[16];
 340
 341         compress_type_to_str(btrfs_file_extent_compression(eb, fi),
 342                              compress_str);
 343
 344         printf("\t\tgeneration %llu type %hhu (%s)\n",
 345                         btrfs_file_extent_generation(eb, fi),
 346                         extent_type, file_extent_type_to_str(extent_type));
 347
 348         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 349                 printf("\t\tinline extent data size %u ram_bytes %u compression %hhu (%s)\n",
 350                                 btrfs_file_extent_inline_item_len(eb, item),
 351                                 btrfs_file_extent_inline_len(eb, slot, fi),
 352                                 btrfs_file_extent_compression(eb, fi),
 353                                 compress_str);
 354                 return;
 355         }
 356         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 357                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 358                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 359                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 360                 printf("\t\tprealloc data offset %llu nr %llu\n",
 361                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 362                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 363                 return;
 364         }
 365         printf("\t\textent data disk byte %llu nr %llu\n",
 366                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 367                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 368         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 369                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 370                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 371                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 372         printf("\t\textent compression %hhu (%s)\n",
 373                         btrfs_file_extent_compression(eb, fi),
 374                         compress_str);
 375 }
 376
 377 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 378 static void extent_flags_to_str(u64 flags, char *ret)
 379 {
 380         int empty = 1;
 381
 382         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 383                 empty = 0;
 384                 strcpy(ret, "DATA");
 385         }
 386         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 387                 if (!empty) {
 388                         empty = 0;
 389                         strcat(ret, "|");
 390                 }
 391                 strcat(ret, "TREE_BLOCK");
 392         }
 393         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 394                 strcat(ret, "|");
 395                 strcat(ret, "FULL_BACKREF");
 396         }
 397 }
 398
 399 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 400 {
 401         struct btrfs_extent_item *ei;
 402         struct btrfs_extent_inline_ref *iref;
 403         struct btrfs_extent_data_ref *dref;
 404         struct btrfs_shared_data_ref *sref;
 405         struct btrfs_disk_key key;
 406         unsigned long end;
 407         unsigned long ptr;
 408         int type;
 409         u32 item_size = btrfs_item_size_nr(eb, slot);
 410         u64 flags;
 411         u64 offset;
 412         char flags_str[32] = {0};
 413
 414         if (item_size < sizeof(*ei)) {
 415 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 416                 struct btrfs_extent_item_v0 *ei0;
 417                 BUG_ON(item_size != sizeof(*ei0));
 418                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 419                 printf("\t\textent refs %u\n",
 420                        btrfs_extent_refs_v0(eb, ei0));
 421                 return;
 422 #else
 423                 BUG();
 424 #endif
 425         }
 426
 427         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 428         flags = btrfs_extent_flags(eb, ei);
 429         extent_flags_to_str(flags, flags_str);
 430
 431         printf("\t\textent refs %llu gen %llu flags %s\n",
 432                (unsigned long long)btrfs_extent_refs(eb, ei),
 433                (unsigned long long)btrfs_extent_generation(eb, ei),
 434                flags_str);
 435
 436         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 437                 struct btrfs_tree_block_info *info;
 438                 info = (struct btrfs_tree_block_info *)(ei + 1);
 439                 btrfs_tree_block_key(eb, info, &key);
 440                 printf("\t\ttree block ");
 441                 btrfs_print_key(&key);
 442                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 443                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 444         } else if (metadata) {
 445                 struct btrfs_key tmp;
 446
 447                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 448                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 449                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 450         } else{
 451                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 452         }
 453
 454         ptr = (unsigned long)iref;
 455         end = (unsigned long)ei + item_size;
 456         while (ptr < end) {
 457                 iref = (struct btrfs_extent_inline_ref *)ptr;
 458                 type = btrfs_extent_inline_ref_type(eb, iref);
 459                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 460                 switch (type) {
 461                 case BTRFS_TREE_BLOCK_REF_KEY:
 462                         printf("\t\ttree block backref root %llu\n",
 463                                (unsigned long long)offset);
 464                         break;
 465                 case BTRFS_SHARED_BLOCK_REF_KEY:
 466                         printf("\t\tshared block backref parent %llu\n",
 467                                (unsigned long long)offset);
 468                         break;
 469                 case BTRFS_EXTENT_DATA_REF_KEY:
 470                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 471                         printf("\t\textent data backref root %llu "
 472                                "objectid %llu offset %llu count %u\n",
 473                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 474                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 475                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 476                                btrfs_extent_data_ref_count(eb, dref));
 477                         break;
 478                 case BTRFS_SHARED_DATA_REF_KEY:
 479                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 480                         printf("\t\tshared data backref parent %llu count %u\n",
 481                                (unsigned long long)offset,
 482                                btrfs_shared_data_ref_count(eb, sref));
 483                         break;
 484                 default:
 485                         return;
 486                 }
 487                 ptr += btrfs_extent_inline_ref_size(type);
 488         }
 489         WARN_ON(ptr > end);
 490 }
 491
 492 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 493 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 494 {
 495         struct btrfs_extent_ref_v0 *ref0;
 496
 497         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 498         printf("\t\textent back ref root %llu gen %llu "
 499                 "owner %llu num_refs %lu\n",
 500                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 501                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 502                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 503                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 504 }
 505 #endif
 506
 507 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 508 {
 509         struct btrfs_root_ref *ref;
 510         char namebuf[BTRFS_NAME_LEN];
 511         int namelen;
 512
 513         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 514         namelen = btrfs_root_ref_name_len(leaf, ref);
 515         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 516         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 517                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 518                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 519                namelen, namebuf);
 520 }
 521
 522 static int count_bytes(void *buf, int len, char b)
 523 {
 524         int cnt = 0;
 525         int i;
 526         for (i = 0; i < len; i++) {
 527                 if (((char*)buf)[i] == b)
 528                         cnt++;
 529         }
 530         return cnt;
 531 }
 532
 533 /*
 534  * Caller must ensure sizeof(*ret) >= 7 "RDONLY"
 535  */
 536 static void root_flags_to_str(u64 flags, char *ret)
 537 {
 538         if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
 539                 strcat(ret, "RDONLY");
 540         else
 541                 strcat(ret, "none");
 542 }
 543
 544 static void print_root(struct extent_buffer *leaf, int slot)
 545 {
 546         struct btrfs_root_item *ri;
 547         struct btrfs_root_item root_item;
 548         int len;
 549         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 550         char flags_str[32] = {0};
 551         struct btrfs_key drop_key;
 552
 553         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 554         len = btrfs_item_size_nr(leaf, slot);
 555
 556         memset(&root_item, 0, sizeof(root_item));
 557         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 558         root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
 559
 560         printf("\t\tgeneration %llu root_dirid %llu bytenr %llu level %hhu refs %u\n",
 561                 (unsigned long long)btrfs_root_generation(&root_item),
 562                 (unsigned long long)btrfs_root_dirid(&root_item),
 563                 (unsigned long long)btrfs_root_bytenr(&root_item),
 564                 btrfs_root_level(&root_item),
 565                 btrfs_root_refs(&root_item));
 566         printf("\t\tlastsnap %llu byte_limit %llu bytes_used %llu flags 0x%llx(%s)\n",
 567                 (unsigned long long)btrfs_root_last_snapshot(&root_item),
 568                 (unsigned long long)btrfs_root_limit(&root_item),
 569                 (unsigned long long)btrfs_root_used(&root_item),
 570                 (unsigned long long)btrfs_root_flags(&root_item),
 571                 flags_str);
 572
 573         if (root_item.generation == root_item.generation_v2) {
 574                 uuid_unparse(root_item.uuid, uuid_str);
 575                 printf("\t\tuuid %s\n", uuid_str);
 576                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 577                         uuid_unparse(root_item.parent_uuid, uuid_str);
 578                         printf("\t\tparent_uuid %s\n", uuid_str);
 579                 }
 580                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 581                         uuid_unparse(root_item.received_uuid, uuid_str);
 582                         printf("\t\treceived_uuid %s\n", uuid_str);
 583                 }
 584                 if (root_item.ctransid) {
 585                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 586                                 btrfs_root_ctransid(&root_item),
 587                                 btrfs_root_otransid(&root_item),
 588                                 btrfs_root_stransid(&root_item),
 589                                 btrfs_root_rtransid(&root_item));
 590                 }
 591         }
 592
 593         btrfs_disk_key_to_cpu(&drop_key, &root_item.drop_progress);
 594         printf("\t\tdrop ");
 595         btrfs_print_key(&root_item.drop_progress);
 596         printf(" level %hhu\n", root_item.drop_level);
 597 }
 598
 599 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 600 {
 601         struct btrfs_free_space_header *header;
 602         struct btrfs_disk_key location;
 603
 604         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 605         btrfs_free_space_key(leaf, header, &location);
 606         printf("\t\tlocation ");
 607         btrfs_print_key(&location);
 608         printf("\n");
 609         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 610                (unsigned long long)btrfs_free_space_generation(leaf, header),
 611                (unsigned long long)btrfs_free_space_entries(leaf, header),
 612                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 613 }
 614
 615 void print_key_type(FILE *stream, u64 objectid, u8 type)
 616 {
 617         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 618                 fprintf(stream, "UNTYPED");
 619                 return;
 620         }
 621
 622         switch (type) {
 623         case BTRFS_INODE_ITEM_KEY:
 624                 fprintf(stream, "INODE_ITEM");
 625                 break;
 626         case BTRFS_INODE_REF_KEY:
 627                 fprintf(stream, "INODE_REF");
 628                 break;
 629         case BTRFS_INODE_EXTREF_KEY:
 630                 fprintf(stream, "INODE_EXTREF");
 631                 break;
 632         case BTRFS_DIR_ITEM_KEY:
 633                 fprintf(stream, "DIR_ITEM");
 634                 break;
 635         case BTRFS_DIR_INDEX_KEY:
 636                 fprintf(stream, "DIR_INDEX");
 637                 break;
 638         case BTRFS_DIR_LOG_ITEM_KEY:
 639                 fprintf(stream, "DIR_LOG_ITEM");
 640                 break;
 641         case BTRFS_DIR_LOG_INDEX_KEY:
 642                 fprintf(stream, "DIR_LOG_INDEX");
 643                 break;
 644         case BTRFS_XATTR_ITEM_KEY:
 645                 fprintf(stream, "XATTR_ITEM");
 646                 break;
 647         case BTRFS_ORPHAN_ITEM_KEY:
 648                 fprintf(stream, "ORPHAN_ITEM");
 649                 break;
 650         case BTRFS_ROOT_ITEM_KEY:
 651                 fprintf(stream, "ROOT_ITEM");
 652                 break;
 653         case BTRFS_ROOT_REF_KEY:
 654                 fprintf(stream, "ROOT_REF");
 655                 break;
 656         case BTRFS_ROOT_BACKREF_KEY:
 657                 fprintf(stream, "ROOT_BACKREF");
 658                 break;
 659         case BTRFS_EXTENT_ITEM_KEY:
 660                 fprintf(stream, "EXTENT_ITEM");
 661                 break;
 662         case BTRFS_METADATA_ITEM_KEY:
 663                 fprintf(stream, "METADATA_ITEM");
 664                 break;
 665         case BTRFS_TREE_BLOCK_REF_KEY:
 666                 fprintf(stream, "TREE_BLOCK_REF");
 667                 break;
 668         case BTRFS_SHARED_BLOCK_REF_KEY:
 669                 fprintf(stream, "SHARED_BLOCK_REF");
 670                 break;
 671         case BTRFS_EXTENT_DATA_REF_KEY:
 672                 fprintf(stream, "EXTENT_DATA_REF");
 673                 break;
 674         case BTRFS_SHARED_DATA_REF_KEY:
 675                 fprintf(stream, "SHARED_DATA_REF");
 676                 break;
 677         case BTRFS_EXTENT_REF_V0_KEY:
 678                 fprintf(stream, "EXTENT_REF_V0");
 679                 break;
 680         case BTRFS_CSUM_ITEM_KEY:
 681                 fprintf(stream, "CSUM_ITEM");
 682                 break;
 683         case BTRFS_EXTENT_CSUM_KEY:
 684                 fprintf(stream, "EXTENT_CSUM");
 685                 break;
 686         case BTRFS_EXTENT_DATA_KEY:
 687                 fprintf(stream, "EXTENT_DATA");
 688                 break;
 689         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 690                 fprintf(stream, "BLOCK_GROUP_ITEM");
 691                 break;
 692         case BTRFS_FREE_SPACE_INFO_KEY:
 693                 fprintf(stream, "FREE_SPACE_INFO");
 694                 break;
 695         case BTRFS_FREE_SPACE_EXTENT_KEY:
 696                 fprintf(stream, "FREE_SPACE_EXTENT");
 697                 break;
 698         case BTRFS_FREE_SPACE_BITMAP_KEY:
 699                 fprintf(stream, "FREE_SPACE_BITMAP");
 700                 break;
 701         case BTRFS_CHUNK_ITEM_KEY:
 702                 fprintf(stream, "CHUNK_ITEM");
 703                 break;
 704         case BTRFS_DEV_ITEM_KEY:
 705                 fprintf(stream, "DEV_ITEM");
 706                 break;
 707         case BTRFS_DEV_EXTENT_KEY:
 708                 fprintf(stream, "DEV_EXTENT");
 709                 break;
 710         case BTRFS_BALANCE_ITEM_KEY:
 711                 fprintf(stream, "BALANCE_ITEM");
 712                 break;
 713         case BTRFS_DEV_REPLACE_KEY:
 714                 fprintf(stream, "DEV_REPLACE");
 715                 break;
 716         case BTRFS_STRING_ITEM_KEY:
 717                 fprintf(stream, "STRING_ITEM");
 718                 break;
 719         case BTRFS_QGROUP_STATUS_KEY:
 720                 fprintf(stream, "QGROUP_STATUS");
 721                 break;
 722         case BTRFS_QGROUP_RELATION_KEY:
 723                 fprintf(stream, "QGROUP_RELATION");
 724                 break;
 725         case BTRFS_QGROUP_INFO_KEY:
 726                 fprintf(stream, "QGROUP_INFO");
 727                 break;
 728         case BTRFS_QGROUP_LIMIT_KEY:
 729                 fprintf(stream, "QGROUP_LIMIT");
 730                 break;
 731         case BTRFS_DEV_STATS_KEY:
 732                 fprintf(stream, "DEV_STATS");
 733                 break;
 734         case BTRFS_UUID_KEY_SUBVOL:
 735                 fprintf(stream, "UUID_KEY_SUBVOL");
 736                 break;
 737         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 738                 fprintf(stream, "UUID_KEY_RECEIVED_SUBVOL");
 739                 break;
 740         default:
 741                 fprintf(stream, "UNKNOWN.%d", type);
 742         };
 743 }
 744
 745 void print_objectid(FILE *stream, u64 objectid, u8 type)
 746 {
 747         switch (type) {
 748         case BTRFS_DEV_EXTENT_KEY:
 749                 /* device id */
 750                 fprintf(stream, "%llu", (unsigned long long)objectid);
 751                 return;
 752         case BTRFS_QGROUP_RELATION_KEY:
 753                 fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
 754                        btrfs_qgroup_subvid(objectid));
 755                 return;
 756         case BTRFS_UUID_KEY_SUBVOL:
 757         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 758                 fprintf(stream, "0x%016llx", (unsigned long long)objectid);
 759                 return;
 760         }
 761
 762         switch (objectid) {
 763         case BTRFS_ROOT_TREE_OBJECTID:
 764                 if (type == BTRFS_DEV_ITEM_KEY)
 765                         fprintf(stream, "DEV_ITEMS");
 766                 else
 767                         fprintf(stream, "ROOT_TREE");
 768                 break;
 769         case BTRFS_EXTENT_TREE_OBJECTID:
 770                 fprintf(stream, "EXTENT_TREE");
 771                 break;
 772         case BTRFS_CHUNK_TREE_OBJECTID:
 773                 fprintf(stream, "CHUNK_TREE");
 774                 break;
 775         case BTRFS_DEV_TREE_OBJECTID:
 776                 fprintf(stream, "DEV_TREE");
 777                 break;
 778         case BTRFS_FS_TREE_OBJECTID:
 779                 fprintf(stream, "FS_TREE");
 780                 break;
 781         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 782                 fprintf(stream, "ROOT_TREE_DIR");
 783                 break;
 784         case BTRFS_CSUM_TREE_OBJECTID:
 785                 fprintf(stream, "CSUM_TREE");
 786                 break;
 787         case BTRFS_BALANCE_OBJECTID:
 788                 fprintf(stream, "BALANCE");
 789                 break;
 790         case BTRFS_ORPHAN_OBJECTID:
 791                 fprintf(stream, "ORPHAN");
 792                 break;
 793         case BTRFS_TREE_LOG_OBJECTID:
 794                 fprintf(stream, "TREE_LOG");
 795                 break;
 796         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 797                 fprintf(stream, "LOG_FIXUP");
 798                 break;
 799         case BTRFS_TREE_RELOC_OBJECTID:
 800                 fprintf(stream, "TREE_RELOC");
 801                 break;
 802         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 803                 fprintf(stream, "DATA_RELOC_TREE");
 804                 break;
 805         case BTRFS_EXTENT_CSUM_OBJECTID:
 806                 fprintf(stream, "EXTENT_CSUM");
 807                 break;
 808         case BTRFS_FREE_SPACE_OBJECTID:
 809                 fprintf(stream, "FREE_SPACE");
 810                 break;
 811         case BTRFS_FREE_INO_OBJECTID:
 812                 fprintf(stream, "FREE_INO");
 813                 break;
 814         case BTRFS_QUOTA_TREE_OBJECTID:
 815                 fprintf(stream, "QUOTA_TREE");
 816                 break;
 817         case BTRFS_UUID_TREE_OBJECTID:
 818                 fprintf(stream, "UUID_TREE");
 819                 break;
 820         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 821                 fprintf(stream, "FREE_SPACE_TREE");
 822                 break;
 823         case BTRFS_MULTIPLE_OBJECTIDS:
 824                 fprintf(stream, "MULTIPLE");
 825                 break;
 826         case (u64)-1:
 827                 fprintf(stream, "-1");
 828                 break;
 829         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 830                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 831                         fprintf(stream, "FIRST_CHUNK_TREE");
 832                         break;
 833                 }
 834                 /* fall-thru */
 835         default:
 836                 fprintf(stream, "%llu", (unsigned long long)objectid);
 837         }
 838 }
 839
 840 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 841 {
 842         u64 objectid = btrfs_disk_key_objectid(disk_key);
 843         u8 type = btrfs_disk_key_type(disk_key);
 844         u64 offset = btrfs_disk_key_offset(disk_key);
 845
 846         printf("key (");
 847         print_objectid(stdout, objectid, type);
 848         printf(" ");
 849         print_key_type(stdout, objectid, type);
 850         switch (type) {
 851         case BTRFS_QGROUP_RELATION_KEY:
 852         case BTRFS_QGROUP_INFO_KEY:
 853         case BTRFS_QGROUP_LIMIT_KEY:
 854                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 855                        btrfs_qgroup_subvid(offset));
 856                 break;
 857         case BTRFS_UUID_KEY_SUBVOL:
 858         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 859                 printf(" 0x%016llx)", (unsigned long long)offset);
 860                 break;
 861         default:
 862                 if (offset == (u64)-1)
 863                         printf(" -1)");
 864                 else
 865                         printf(" %llu)", (unsigned long long)offset);
 866                 break;
 867         }
 868 }
 869
 870 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 871                             u32 item_size)
 872 {
 873         if (item_size & (sizeof(u64) - 1)) {
 874                 printf("btrfs: uuid item with illegal size %lu!\n",
 875                        (unsigned long)item_size);
 876                 return;
 877         }
 878         while (item_size) {
 879                 __le64 subvol_id;
 880
 881                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 882                 printf("\t\tsubvol_id %llu\n",
 883                         (unsigned long long)le64_to_cpu(subvol_id));
 884                 item_size -= sizeof(u64);
 885                 offset += sizeof(u64);
 886         }
 887 }
 888
 889 /* Btrfs inode flag stringification helper */
 890 #define STRCAT_ONE_INODE_FLAG(flags, name, empty, dst) ({                       \
 891         if (flags & BTRFS_INODE_##name) {                               \
 892                 if (!empty)                                             \
 893                         strcat(dst, "|");                               \
 894                 strcat(dst, #name);                                     \
 895                 empty = 0;                                              \
 896         }                                                               \
 897 })
 898
 899 /*
 900  * Caller should ensure sizeof(*ret) >= 102: all charactors plus '|' of
 901  * BTRFS_INODE_* flags
 902  */
 903 static void inode_flags_to_str(u64 flags, char *ret)
 904 {
 905         int empty = 1;
 906
 907         STRCAT_ONE_INODE_FLAG(flags, NODATASUM, empty, ret);
 908         STRCAT_ONE_INODE_FLAG(flags, NODATACOW, empty, ret);
 909         STRCAT_ONE_INODE_FLAG(flags, READONLY, empty, ret);
 910         STRCAT_ONE_INODE_FLAG(flags, NOCOMPRESS, empty, ret);
 911         STRCAT_ONE_INODE_FLAG(flags, PREALLOC, empty, ret);
 912         STRCAT_ONE_INODE_FLAG(flags, SYNC, empty, ret);
 913         STRCAT_ONE_INODE_FLAG(flags, IMMUTABLE, empty, ret);
 914         STRCAT_ONE_INODE_FLAG(flags, APPEND, empty, ret);
 915         STRCAT_ONE_INODE_FLAG(flags, NODUMP, empty, ret);
 916         STRCAT_ONE_INODE_FLAG(flags, NOATIME, empty, ret);
 917         STRCAT_ONE_INODE_FLAG(flags, DIRSYNC, empty, ret);
 918         STRCAT_ONE_INODE_FLAG(flags, COMPRESS, empty, ret);
 919         if (empty)
 920                 strcat(ret, "none");
 921 }
 922
 923 static void print_timespec(struct extent_buffer *eb,
 924                 struct btrfs_timespec *timespec, const char *prefix,
 925                 const char *suffix)
 926 {
 927         struct tm tm;
 928         u64 tmp_u64;
 929         u32 tmp_u32;
 930         time_t tmp_time;
 931         char timestamp[256];
 932
 933         tmp_u64 = btrfs_timespec_sec(eb, timespec);
 934         tmp_u32 = btrfs_timespec_nsec(eb, timespec);
 935         tmp_time = tmp_u64;
 936         localtime_r(&tmp_time, &tm);
 937         strftime(timestamp, sizeof(timestamp),
 938                         "%Y-%m-%d %H:%M:%S", &tm);
 939         printf("%s%llu.%u (%s)%s", prefix, (unsigned long long)tmp_u64, tmp_u32,
 940                         timestamp, suffix);
 941 }
 942
 943 static void print_inode_item(struct extent_buffer *eb,
 944                 struct btrfs_inode_item *ii)
 945 {
 946         char flags_str[256];
 947
 948         memset(flags_str, 0, sizeof(flags_str));
 949         inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
 950         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 951                "\t\tblock group %llu mode %o links %u uid %u gid %u rdev %llu\n"
 952                "\t\tsequence %llu flags 0x%llx(%s)\n",
 953                (unsigned long long)btrfs_inode_generation(eb, ii),
 954                (unsigned long long)btrfs_inode_transid(eb, ii),
 955                (unsigned long long)btrfs_inode_size(eb, ii),
 956                (unsigned long long)btrfs_inode_nbytes(eb, ii),
 957                (unsigned long long)btrfs_inode_block_group(eb,ii),
 958                btrfs_inode_mode(eb, ii),
 959                btrfs_inode_nlink(eb, ii),
 960                btrfs_inode_uid(eb, ii),
 961                btrfs_inode_gid(eb, ii),
 962                (unsigned long long)btrfs_inode_rdev(eb,ii),
 963                (unsigned long long)btrfs_inode_flags(eb,ii),
 964                (unsigned long long)btrfs_inode_sequence(eb, ii),
 965                flags_str);
 966         print_timespec(eb, btrfs_inode_atime(ii), "\t\tatime ", "\n");
 967         print_timespec(eb, btrfs_inode_ctime(ii), "\t\tctime ", "\n");
 968         print_timespec(eb, btrfs_inode_mtime(ii), "\t\tmtime ", "\n");
 969         print_timespec(eb, btrfs_inode_otime(ii), "\t\totime ", "\n");
 970 }
 971
 972 static void print_disk_balance_args(struct btrfs_disk_balance_args *ba)
 973 {
 974         printf("\t\tprofiles %llu devid %llu target %llu flags %llu\n",
 975                         (unsigned long long)le64_to_cpu(ba->profiles),
 976                         (unsigned long long)le64_to_cpu(ba->devid),
 977                         (unsigned long long)le64_to_cpu(ba->target),
 978                         (unsigned long long)le64_to_cpu(ba->flags));
 979         printf("\t\tusage_min %u usage_max %u pstart %llu pend %llu\n",
 980                         le32_to_cpu(ba->usage_min),
 981                         le32_to_cpu(ba->usage_max),
 982                         (unsigned long long)le64_to_cpu(ba->pstart),
 983                         (unsigned long long)le64_to_cpu(ba->pend));
 984         printf("\t\tvstart %llu vend %llu limit_min %u limit_max %u\n",
 985                         (unsigned long long)le64_to_cpu(ba->vstart),
 986                         (unsigned long long)le64_to_cpu(ba->vend),
 987                         le32_to_cpu(ba->limit_min),
 988                         le32_to_cpu(ba->limit_max));
 989         printf("\t\tstripes_min %u stripes_max %u\n",
 990                         le32_to_cpu(ba->stripes_min),
 991                         le32_to_cpu(ba->stripes_max));
 992 }
 993
 994 static void print_balance_item(struct extent_buffer *eb,
 995                 struct btrfs_balance_item *bi)
 996 {
 997         printf("\t\tbalance status flags %llu\n",
 998                         btrfs_balance_item_flags(eb, bi));
 999
1000         printf("\t\tDATA\n");
1001         print_disk_balance_args(btrfs_balance_item_data(eb, bi));
1002         printf("\t\tMETADATA\n");
1003         print_disk_balance_args(btrfs_balance_item_meta(eb, bi));
1004         printf("\t\tSYSTEM\n");
1005         print_disk_balance_args(btrfs_balance_item_sys(eb, bi));
1006 }
1007
1008 static void print_dev_stats(struct extent_buffer *eb,
1009                 struct btrfs_dev_stats_item *stats, u32 size)
1010 {
1011         int i;
1012         u32 known = BTRFS_DEV_STAT_VALUES_MAX * sizeof(__le64);
1013         __le64 *values = btrfs_dev_stats_values(eb, stats);
1014
1015         printf("\t\tdevice stats\n");
1016         printf("\t\twrite_errs %llu read_errs %llu flush_errs %llu corruption_errs %llu generation %llu\n",
1017                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_WRITE_ERRS]),
1018                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_READ_ERRS]),
1019                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_FLUSH_ERRS]),
1020                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_CORRUPTION_ERRS]),
1021                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_GENERATION_ERRS]));
1022
1023         if (known < size) {
1024                 printf("\t\tunknown stats item bytes %u", size - known);
1025                 for (i = BTRFS_DEV_STAT_VALUES_MAX; i * sizeof(__le64) < size; i++) {
1026                         printf("\t\tunknown item %u offset %lu value %llu\n",
1027                                 i, i * sizeof(__le64),
1028                                 (unsigned long long)le64_to_cpu(values[i]));
1029                 }
1030         }
1031 }
1032
1033 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
1034 {
1035         int i;
1036         char *str;
1037         struct btrfs_item *item;
1038         struct btrfs_dir_item *di;
1039         struct btrfs_inode_item *ii;
1040         struct btrfs_file_extent_item *fi;
1041         struct btrfs_block_group_item *bi;
1042         struct btrfs_extent_data_ref *dref;
1043         struct btrfs_shared_data_ref *sref;
1044         struct btrfs_inode_ref *iref;
1045         struct btrfs_inode_extref *iref2;
1046         struct btrfs_dev_extent *dev_extent;
1047         struct btrfs_disk_key disk_key;
1048         struct btrfs_block_group_item bg_item;
1049         struct btrfs_free_space_info *free_info;
1050         struct btrfs_dir_log_item *dlog;
1051         struct btrfs_qgroup_info_item *qg_info;
1052         struct btrfs_qgroup_limit_item *qg_limit;
1053         struct btrfs_qgroup_status_item *qg_status;
1054         u32 nr = btrfs_header_nritems(l);
1055         u64 objectid;
1056         u32 type;
1057         u64 offset;
1058         char flags_str[256];
1059         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
1060         u8 uuid[BTRFS_UUID_SIZE];
1061
1062         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
1063                 (unsigned long long)btrfs_header_bytenr(l), nr,
1064                 btrfs_leaf_free_space(root, l),
1065                 (unsigned long long)btrfs_header_generation(l),
1066                 (unsigned long long)btrfs_header_owner(l));
1067         print_uuids(l);
1068         fflush(stdout);
1069         for (i = 0 ; i < nr ; i++) {
1070                 u32 item_size;
1071
1072                 item = btrfs_item_nr(i);
1073                 item_size = btrfs_item_size(l, item);
1074                 btrfs_item_key(l, &disk_key, i);
1075                 objectid = btrfs_disk_key_objectid(&disk_key);
1076                 type = btrfs_disk_key_type(&disk_key);
1077                 offset = btrfs_disk_key_offset(&disk_key);
1078                 printf("\titem %d ", i);
1079                 btrfs_print_key(&disk_key);
1080                 printf(" itemoff %d itemsize %d\n",
1081                         btrfs_item_offset(l, item),
1082                         btrfs_item_size(l, item));
1083
1084                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
1085                         print_free_space_header(l, i);
1086
1087                 switch (type) {
1088                 case BTRFS_INODE_ITEM_KEY:
1089                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
1090                         print_inode_item(l, ii);
1091                         break;
1092                 case BTRFS_INODE_REF_KEY:
1093                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
1094                         print_inode_ref_item(l, item_size, iref);
1095                         break;
1096                 case BTRFS_INODE_EXTREF_KEY:
1097                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
1098                         print_inode_extref_item(l, item_size, iref2);
1099                         break;
1100                 case BTRFS_DIR_ITEM_KEY:
1101                 case BTRFS_DIR_INDEX_KEY:
1102                 case BTRFS_XATTR_ITEM_KEY:
1103                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
1104                         print_dir_item(l, item_size, di);
1105                         break;
1106                 case BTRFS_DIR_LOG_INDEX_KEY:
1107                 case BTRFS_DIR_LOG_ITEM_KEY:
1108                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
1109                         printf("\t\tdir log end %Lu\n",
1110                                (unsigned long long)btrfs_dir_log_end(l, dlog));
1111                        break;
1112                 case BTRFS_ORPHAN_ITEM_KEY:
1113                         printf("\t\torphan item\n");
1114                         break;
1115                 case BTRFS_ROOT_ITEM_KEY:
1116                         print_root(l, i);
1117                         break;
1118                 case BTRFS_ROOT_REF_KEY:
1119                         print_root_ref(l, i, "ref");
1120                         break;
1121                 case BTRFS_ROOT_BACKREF_KEY:
1122                         print_root_ref(l, i, "backref");
1123                         break;
1124                 case BTRFS_EXTENT_ITEM_KEY:
1125                         print_extent_item(l, i, 0);
1126                         break;
1127                 case BTRFS_METADATA_ITEM_KEY:
1128                         print_extent_item(l, i, 1);
1129                         break;
1130                 case BTRFS_TREE_BLOCK_REF_KEY:
1131                         printf("\t\ttree block backref\n");
1132                         break;
1133                 case BTRFS_SHARED_BLOCK_REF_KEY:
1134                         printf("\t\tshared block backref\n");
1135                         break;
1136                 case BTRFS_EXTENT_DATA_REF_KEY:
1137                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
1138                         printf("\t\textent data backref root %llu "
1139                                "objectid %llu offset %llu count %u\n",
1140                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
1141                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
1142                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
1143                                btrfs_extent_data_ref_count(l, dref));
1144                         break;
1145                 case BTRFS_SHARED_DATA_REF_KEY:
1146                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
1147                         printf("\t\tshared data backref count %u\n",
1148                                btrfs_shared_data_ref_count(l, sref));
1149                         break;
1150                 case BTRFS_EXTENT_REF_V0_KEY:
1151 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
1152                         print_extent_ref_v0(l, i);
1153 #else
1154                         BUG();
1155 #endif
1156                         break;
1157                 case BTRFS_CSUM_ITEM_KEY:
1158                         printf("\t\tcsum item\n");
1159                         break;
1160                 case BTRFS_EXTENT_CSUM_KEY:
1161                         printf("\t\textent csum item\n");
1162                         break;
1163                 case BTRFS_EXTENT_DATA_KEY:
1164                         fi = btrfs_item_ptr(l, i,
1165                                             struct btrfs_file_extent_item);
1166                         print_file_extent_item(l, item, i, fi);
1167                         break;
1168                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
1169                         bi = btrfs_item_ptr(l, i,
1170                                             struct btrfs_block_group_item);
1171                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
1172                                            sizeof(bg_item));
1173                         memset(flags_str, 0, sizeof(flags_str));
1174                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
1175                                         flags_str);
1176                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
1177                                (unsigned long long)btrfs_block_group_used(&bg_item),
1178                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
1179                                flags_str);
1180                         break;
1181                 case BTRFS_FREE_SPACE_INFO_KEY:
1182                         free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
1183                         printf("\t\tfree space info extent count %u flags %u\n",
1184                                (unsigned)btrfs_free_space_extent_count(l, free_info),
1185                                (unsigned)btrfs_free_space_flags(l, free_info));
1186                         break;
1187                 case BTRFS_FREE_SPACE_EXTENT_KEY:
1188                         printf("\t\tfree space extent\n");
1189                         break;
1190                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1191                         printf("\t\tfree space bitmap\n");
1192                         break;
1193                 case BTRFS_CHUNK_ITEM_KEY:
1194                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
1195                         break;
1196                 case BTRFS_DEV_ITEM_KEY:
1197                         print_dev_item(l, btrfs_item_ptr(l, i,
1198                                         struct btrfs_dev_item));
1199                         break;
1200                 case BTRFS_DEV_EXTENT_KEY:
1201                         dev_extent = btrfs_item_ptr(l, i,
1202                                                     struct btrfs_dev_extent);
1203                         read_extent_buffer(l, uuid,
1204                                 (unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
1205                                 BTRFS_UUID_SIZE);
1206                         uuid_unparse(uuid, uuid_str);
1207                         printf("\t\tdev extent chunk_tree %llu\n"
1208                                "\t\tchunk_objectid %llu chunk_offset %llu "
1209                                "length %llu\n"
1210                                "\t\tchunk_tree_uuid %s\n",
1211                                (unsigned long long)
1212                                btrfs_dev_extent_chunk_tree(l, dev_extent),
1213                                (unsigned long long)
1214                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
1215                                (unsigned long long)
1216                                btrfs_dev_extent_chunk_offset(l, dev_extent),
1217                                (unsigned long long)
1218                                btrfs_dev_extent_length(l, dev_extent),
1219                                uuid_str);
1220                         break;
1221                 case BTRFS_QGROUP_STATUS_KEY:
1222                         qg_status = btrfs_item_ptr(l, i,
1223                                         struct btrfs_qgroup_status_item);
1224                         memset(flags_str, 0, sizeof(flags_str));
1225                         qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
1226                                         flags_str);
1227                         printf("\t\tversion %llu generation %llu flags %s "
1228                                 "scan %lld\n",
1229                                 (unsigned long long)
1230                                 btrfs_qgroup_status_version(l, qg_status),
1231                                 (unsigned long long)
1232                                 btrfs_qgroup_status_generation(l, qg_status),
1233                                 flags_str,
1234                                 (unsigned long long)
1235                                 btrfs_qgroup_status_rescan(l, qg_status));
1236                         break;
1237                 case BTRFS_QGROUP_RELATION_KEY:
1238                         break;
1239                 case BTRFS_QGROUP_INFO_KEY:
1240                         qg_info = btrfs_item_ptr(l, i,
1241                                                  struct btrfs_qgroup_info_item);
1242                         printf("\t\tgeneration %llu\n"
1243                              "\t\treferenced %llu referenced_compressed %llu\n"
1244                              "\t\texclusive %llu exclusive_compressed %llu\n",
1245                                (unsigned long long)
1246                                btrfs_qgroup_info_generation(l, qg_info),
1247                                (unsigned long long)
1248                                btrfs_qgroup_info_referenced(l, qg_info),
1249                                (unsigned long long)
1250                                btrfs_qgroup_info_referenced_compressed(l,
1251                                                                        qg_info),
1252                                (unsigned long long)
1253                                btrfs_qgroup_info_exclusive(l, qg_info),
1254                                (unsigned long long)
1255                                btrfs_qgroup_info_exclusive_compressed(l,
1256                                                                       qg_info));
1257                         break;
1258                 case BTRFS_QGROUP_LIMIT_KEY:
1259                         qg_limit = btrfs_item_ptr(l, i,
1260                                          struct btrfs_qgroup_limit_item);
1261                         printf("\t\tflags %llx\n"
1262                              "\t\tmax_referenced %lld max_exclusive %lld\n"
1263                              "\t\trsv_referenced %lld rsv_exclusive %lld\n",
1264                                (unsigned long long)
1265                                btrfs_qgroup_limit_flags(l, qg_limit),
1266                                (long long)
1267                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
1268                                (long long)
1269                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
1270                                (long long)
1271                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
1272                                (long long)
1273                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
1274                         break;
1275                 case BTRFS_UUID_KEY_SUBVOL:
1276                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1277                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
1278                                         btrfs_item_size_nr(l, i));
1279                         break;
1280                 case BTRFS_STRING_ITEM_KEY:
1281                         /* dirty, but it's simple */
1282                         str = l->data + btrfs_item_ptr_offset(l, i);
1283                         printf("\t\titem data %.*s\n", item_size, str);
1284                         break;
1285                 case BTRFS_PERSISTENT_ITEM_KEY:
1286                         printf("\t\tpersistent item objectid ");
1287                         print_objectid(stdout, objectid, BTRFS_PERSISTENT_ITEM_KEY);
1288                         printf(" offset %llu\n", (unsigned long long)offset);
1289                         switch (objectid) {
1290                         case BTRFS_DEV_STATS_OBJECTID:
1291                                 print_dev_stats(l, btrfs_item_ptr(l, i,
1292                                                 struct btrfs_dev_stats_item),
1293                                                 item_size);
1294                                 break;
1295                         default:
1296                                 printf("\t\tunknown persistent item objectid %llu\n",
1297                                                 objectid);
1298                         }
1299                         break;
1300                 case BTRFS_TEMPORARY_ITEM_KEY:
1301                         printf("\t\ttemporary item objectid ");
1302                         print_objectid(stdout, objectid, BTRFS_TEMPORARY_ITEM_KEY);
1303                         printf(" offset %llu\n", (unsigned long long)offset);
1304                         switch (objectid) {
1305                         case BTRFS_BALANCE_OBJECTID:
1306                                 print_balance_item(l, btrfs_item_ptr(l, i,
1307                                         struct btrfs_balance_item));
1308                                 break;
1309                         default:
1310                                 printf("\t\tunknown temporary item objectid %llu\n",
1311                                                 objectid);
1312                         }
1313                         break;
1314                 };
1315                 fflush(stdout);
1316         }
1317 }
1318
1319 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1320 {
1321         int i;
1322         u32 nr;
1323         u32 size;
1324         struct btrfs_disk_key disk_key;
1325         struct btrfs_key key;
1326         struct extent_buffer *next;
1327
1328         if (!eb)
1329                 return;
1330         nr = btrfs_header_nritems(eb);
1331         if (btrfs_is_leaf(eb)) {
1332                 btrfs_print_leaf(root, eb);
1333                 return;
1334         }
1335         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1336                (unsigned long long)eb->start,
1337                 btrfs_header_level(eb), nr,
1338                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1339                 (unsigned long long)btrfs_header_generation(eb),
1340                 (unsigned long long)btrfs_header_owner(eb));
1341         print_uuids(eb);
1342         fflush(stdout);
1343         size = root->nodesize;
1344         for (i = 0; i < nr; i++) {
1345                 u64 blocknr = btrfs_node_blockptr(eb, i);
1346                 btrfs_node_key(eb, &disk_key, i);
1347                 btrfs_disk_key_to_cpu(&key, &disk_key);
1348                 printf("\t");
1349                 btrfs_print_key(&disk_key);
1350                 printf(" block %llu (%llu) gen %llu\n",
1351                        (unsigned long long)blocknr,
1352                        (unsigned long long)blocknr / size,
1353                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1354                 fflush(stdout);
1355         }
1356         if (!follow)
1357                 return;
1358
1359         for (i = 0; i < nr; i++) {
1360                 next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
1361                                 btrfs_node_ptr_generation(eb, i));
1362                 if (!extent_buffer_uptodate(next)) {
1363                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1364                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1365                                 (unsigned long long)btrfs_header_owner(eb));
1366                         continue;
1367                 }
1368                 if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
1369                         warning(
1370         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1371                                 i, btrfs_header_level(next),
1372                                 btrfs_header_level(eb));
1373                         goto out;
1374                 }
1375                 if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
1376                         warning(
1377         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1378                                 i, btrfs_header_level(next),
1379                                 btrfs_header_level(eb));
1380                         goto out;
1381                 }
1382                 btrfs_print_tree(root, next, 1);
1383                 free_extent_buffer(next);
1384         }
1385
1386         return;
1387
1388 out:
1389         free_extent_buffer(next);
1390 }