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 void 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 }
 101
 102 static void print_inode_extref_item(struct extent_buffer *eb, u32 size,
 103                 struct btrfs_inode_extref *extref)
 104 {
 105         u32 cur = 0;
 106         u32 len;
 107         u32 name_len = 0;
 108         u64 index = 0;
 109         u64 parent_objid;
 110         char namebuf[BTRFS_NAME_LEN];
 111
 112         while (cur < size) {
 113                 index = btrfs_inode_extref_index(eb, extref);
 114                 name_len = btrfs_inode_extref_name_len(eb, extref);
 115                 parent_objid = btrfs_inode_extref_parent(eb, extref);
 116
 117                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 118
 119                 read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len);
 120
 121                 printf("\t\tinode extref index %llu parent %llu namelen %u "
 122                        "name: %.*s\n",
 123                        (unsigned long long)index,
 124                        (unsigned long long)parent_objid,
 125                        name_len, len, namebuf);
 126
 127                 len = sizeof(*extref) + name_len;
 128                 extref = (struct btrfs_inode_extref *)((char *)extref + len);
 129                 cur += len;
 130         }
 131 }
 132
 133 static void print_inode_ref_item(struct extent_buffer *eb, u32 size,
 134                                 struct btrfs_inode_ref *ref)
 135 {
 136         u32 cur = 0;
 137         u32 len;
 138         u32 name_len;
 139         u64 index;
 140         char namebuf[BTRFS_NAME_LEN];
 141
 142         while (cur < size) {
 143                 name_len = btrfs_inode_ref_name_len(eb, ref);
 144                 index = btrfs_inode_ref_index(eb, ref);
 145                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 146                 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
 147                 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
 148                        (unsigned long long)index, name_len, len, namebuf);
 149                 len = sizeof(*ref) + name_len;
 150                 ref = (struct btrfs_inode_ref *)((char *)ref + len);
 151                 cur += len;
 152         }
 153 }
 154
 155 /* Caller should ensure sizeof(*ret)>=21 "DATA|METADATA|RAID10" */
 156 static void bg_flags_to_str(u64 flags, char *ret)
 157 {
 158         int empty = 1;
 159
 160         if (flags & BTRFS_BLOCK_GROUP_DATA) {
 161                 empty = 0;
 162                 strcpy(ret, "DATA");
 163         }
 164         if (flags & BTRFS_BLOCK_GROUP_METADATA) {
 165                 if (!empty)
 166                         strcat(ret, "|");
 167                 strcat(ret, "METADATA");
 168         }
 169         if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
 170                 if (!empty)
 171                         strcat(ret, "|");
 172                 strcat(ret, "SYSTEM");
 173         }
 174         switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
 175         case BTRFS_BLOCK_GROUP_RAID0:
 176                 strcat(ret, "|RAID0");
 177                 break;
 178         case BTRFS_BLOCK_GROUP_RAID1:
 179                 strcat(ret, "|RAID1");
 180                 break;
 181         case BTRFS_BLOCK_GROUP_DUP:
 182                 strcat(ret, "|DUP");
 183                 break;
 184         case BTRFS_BLOCK_GROUP_RAID10:
 185                 strcat(ret, "|RAID10");
 186                 break;
 187         case BTRFS_BLOCK_GROUP_RAID5:
 188                 strcat(ret, "|RAID5");
 189                 break;
 190         case BTRFS_BLOCK_GROUP_RAID6:
 191                 strcat(ret, "|RAID6");
 192                 break;
 193         default:
 194                 break;
 195         }
 196 }
 197
 198 /* Caller should ensure sizeof(*ret)>= 26 "OFF|SCANNING|INCONSISTENT" */
 199 static void qgroup_flags_to_str(u64 flags, char *ret)
 200 {
 201         if (flags & BTRFS_QGROUP_STATUS_FLAG_ON)
 202                 strcpy(ret, "ON");
 203         else
 204                 strcpy(ret, "OFF");
 205
 206         if (flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN)
 207                 strcat(ret, "|SCANNING");
 208         if (flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
 209                 strcat(ret, "|INCONSISTENT");
 210 }
 211
 212 void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
 213 {
 214         int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
 215         int i;
 216         char chunk_flags_str[32] = {0};
 217
 218         bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
 219         printf("\t\tlength %llu owner %llu stripe_len %llu type %s\n",
 220                (unsigned long long)btrfs_chunk_length(eb, chunk),
 221                (unsigned long long)btrfs_chunk_owner(eb, chunk),
 222                (unsigned long long)btrfs_chunk_stripe_len(eb, chunk),
 223                 chunk_flags_str);
 224         printf("\t\tio_align %u io_width %u sector_size %u\n",
 225                         btrfs_chunk_io_align(eb, chunk),
 226                         btrfs_chunk_io_width(eb, chunk),
 227                         btrfs_chunk_sector_size(eb, chunk));
 228         printf("\t\tnum_stripes %hu sub_stripes %hu\n", num_stripes,
 229                         btrfs_chunk_sub_stripes(eb, chunk));
 230         for (i = 0 ; i < num_stripes ; i++) {
 231                 unsigned char dev_uuid[BTRFS_UUID_SIZE];
 232                 char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
 233
 234                 read_extent_buffer(eb, dev_uuid,
 235                         (unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
 236                         BTRFS_UUID_SIZE);
 237                 uuid_unparse(dev_uuid, str_dev_uuid);
 238                 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
 239                       (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
 240                       (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
 241                 printf("\t\t\tdev_uuid %s\n", str_dev_uuid);
 242         }
 243 }
 244
 245 static void print_dev_item(struct extent_buffer *eb,
 246                            struct btrfs_dev_item *dev_item)
 247 {
 248         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 249         char fsid_str[BTRFS_UUID_UNPARSED_SIZE];
 250         u8 uuid[BTRFS_UUID_SIZE];
 251         u8 fsid[BTRFS_UUID_SIZE];
 252
 253         read_extent_buffer(eb, uuid,
 254                            (unsigned long)btrfs_device_uuid(dev_item),
 255                            BTRFS_UUID_SIZE);
 256         uuid_unparse(uuid, uuid_str);
 257         read_extent_buffer(eb, fsid,
 258                            (unsigned long)btrfs_device_fsid(dev_item),
 259                            BTRFS_UUID_SIZE);
 260         uuid_unparse(fsid, fsid_str);
 261         printf("\t\tdevid %llu total_bytes %llu bytes_used %Lu\n"
 262                "\t\tio_align %u io_width %u sector_size %u type %llu\n"
 263                "\t\tgeneration %llu start_offset %llu dev_group %u\n"
 264                "\t\tseek_speed %hhu bandwidth %hhu\n"
 265                "\t\tuuid %s\n"
 266                "\t\tfsid %s\n",
 267                (unsigned long long)btrfs_device_id(eb, dev_item),
 268                (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
 269                (unsigned long long)btrfs_device_bytes_used(eb, dev_item),
 270                btrfs_device_io_align(eb, dev_item),
 271                btrfs_device_io_width(eb, dev_item),
 272                btrfs_device_sector_size(eb, dev_item),
 273                (unsigned long long)btrfs_device_type(eb, dev_item),
 274                (unsigned long long)btrfs_device_generation(eb, dev_item),
 275                (unsigned long long)btrfs_device_start_offset(eb, dev_item),
 276                btrfs_device_group(eb, dev_item),
 277                btrfs_device_seek_speed(eb, dev_item),
 278                btrfs_device_bandwidth(eb, dev_item),
 279                uuid_str, fsid_str);
 280 }
 281
 282 static void print_uuids(struct extent_buffer *eb)
 283 {
 284         char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
 285         char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
 286         u8 disk_uuid[BTRFS_UUID_SIZE];
 287
 288         read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(),
 289                            BTRFS_FSID_SIZE);
 290
 291         fs_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 292         uuid_unparse(disk_uuid, fs_uuid);
 293
 294         read_extent_buffer(eb, disk_uuid,
 295                            btrfs_header_chunk_tree_uuid(eb),
 296                            BTRFS_UUID_SIZE);
 297
 298         chunk_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 299         uuid_unparse(disk_uuid, chunk_uuid);
 300         printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
 301 }
 302
 303 static void compress_type_to_str(u8 compress_type, char *ret)
 304 {
 305         switch (compress_type) {
 306         case BTRFS_COMPRESS_NONE:
 307                 strcpy(ret, "none");
 308                 break;
 309         case BTRFS_COMPRESS_ZLIB:
 310                 strcpy(ret, "zlib");
 311                 break;
 312         case BTRFS_COMPRESS_LZO:
 313                 strcpy(ret, "lzo");
 314                 break;
 315         default:
 316                 sprintf(ret, "UNKNOWN.%d", compress_type);
 317         }
 318 }
 319
 320 static const char* file_extent_type_to_str(u8 type)
 321 {
 322         switch (type) {
 323         case BTRFS_FILE_EXTENT_INLINE: return "inline";
 324         case BTRFS_FILE_EXTENT_PREALLOC: return "prealloc";
 325         case BTRFS_FILE_EXTENT_REG: return "regular";
 326         default: return "unknown";
 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         printf("\t\tgeneration %llu type %hhu (%s)\n",
 342                         btrfs_file_extent_generation(eb, fi),
 343                         extent_type, file_extent_type_to_str(extent_type));
 344
 345         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 346                 printf("\t\tinline extent data size %u ram_bytes %u compression %hhu (%s)\n",
 347                                 btrfs_file_extent_inline_item_len(eb, item),
 348                                 btrfs_file_extent_inline_len(eb, slot, fi),
 349                                 btrfs_file_extent_compression(eb, fi),
 350                                 compress_str);
 351                 return;
 352         }
 353         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 354                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 355                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 356                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 357                 printf("\t\tprealloc data offset %llu nr %llu\n",
 358                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 359                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 360                 return;
 361         }
 362         printf("\t\textent data disk byte %llu nr %llu\n",
 363                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 364                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 365         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 366                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 367                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 368                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 369         printf("\t\textent compression %hhu (%s)\n",
 370                         btrfs_file_extent_compression(eb, fi),
 371                         compress_str);
 372 }
 373
 374 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 375 static void extent_flags_to_str(u64 flags, char *ret)
 376 {
 377         int empty = 1;
 378
 379         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 380                 empty = 0;
 381                 strcpy(ret, "DATA");
 382         }
 383         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 384                 if (!empty) {
 385                         empty = 0;
 386                         strcat(ret, "|");
 387                 }
 388                 strcat(ret, "TREE_BLOCK");
 389         }
 390         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 391                 strcat(ret, "|");
 392                 strcat(ret, "FULL_BACKREF");
 393         }
 394 }
 395
 396 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 397 {
 398         struct btrfs_extent_item *ei;
 399         struct btrfs_extent_inline_ref *iref;
 400         struct btrfs_extent_data_ref *dref;
 401         struct btrfs_shared_data_ref *sref;
 402         struct btrfs_disk_key key;
 403         unsigned long end;
 404         unsigned long ptr;
 405         int type;
 406         u32 item_size = btrfs_item_size_nr(eb, slot);
 407         u64 flags;
 408         u64 offset;
 409         char flags_str[32] = {0};
 410
 411         if (item_size < sizeof(*ei)) {
 412 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 413                 struct btrfs_extent_item_v0 *ei0;
 414                 BUG_ON(item_size != sizeof(*ei0));
 415                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 416                 printf("\t\textent refs %u\n",
 417                        btrfs_extent_refs_v0(eb, ei0));
 418                 return;
 419 #else
 420                 BUG();
 421 #endif
 422         }
 423
 424         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 425         flags = btrfs_extent_flags(eb, ei);
 426         extent_flags_to_str(flags, flags_str);
 427
 428         printf("\t\textent refs %llu gen %llu flags %s\n",
 429                (unsigned long long)btrfs_extent_refs(eb, ei),
 430                (unsigned long long)btrfs_extent_generation(eb, ei),
 431                flags_str);
 432
 433         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 434                 struct btrfs_tree_block_info *info;
 435                 info = (struct btrfs_tree_block_info *)(ei + 1);
 436                 btrfs_tree_block_key(eb, info, &key);
 437                 printf("\t\ttree block ");
 438                 btrfs_print_key(&key);
 439                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 440                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 441         } else if (metadata) {
 442                 struct btrfs_key tmp;
 443
 444                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 445                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 446                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 447         } else{
 448                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 449         }
 450
 451         ptr = (unsigned long)iref;
 452         end = (unsigned long)ei + item_size;
 453         while (ptr < end) {
 454                 iref = (struct btrfs_extent_inline_ref *)ptr;
 455                 type = btrfs_extent_inline_ref_type(eb, iref);
 456                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 457                 switch (type) {
 458                 case BTRFS_TREE_BLOCK_REF_KEY:
 459                         printf("\t\ttree block backref root %llu\n",
 460                                (unsigned long long)offset);
 461                         break;
 462                 case BTRFS_SHARED_BLOCK_REF_KEY:
 463                         printf("\t\tshared block backref parent %llu\n",
 464                                (unsigned long long)offset);
 465                         break;
 466                 case BTRFS_EXTENT_DATA_REF_KEY:
 467                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 468                         printf("\t\textent data backref root %llu "
 469                                "objectid %llu offset %llu count %u\n",
 470                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 471                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 472                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 473                                btrfs_extent_data_ref_count(eb, dref));
 474                         break;
 475                 case BTRFS_SHARED_DATA_REF_KEY:
 476                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 477                         printf("\t\tshared data backref parent %llu count %u\n",
 478                                (unsigned long long)offset,
 479                                btrfs_shared_data_ref_count(eb, sref));
 480                         break;
 481                 default:
 482                         return;
 483                 }
 484                 ptr += btrfs_extent_inline_ref_size(type);
 485         }
 486         WARN_ON(ptr > end);
 487 }
 488
 489 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 490 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 491 {
 492         struct btrfs_extent_ref_v0 *ref0;
 493
 494         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 495         printf("\t\textent back ref root %llu gen %llu "
 496                 "owner %llu num_refs %lu\n",
 497                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 498                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 499                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 500                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 501 }
 502 #endif
 503
 504 static void print_root_ref(struct extent_buffer *leaf, int slot, const char *tag)
 505 {
 506         struct btrfs_root_ref *ref;
 507         char namebuf[BTRFS_NAME_LEN];
 508         int namelen;
 509
 510         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 511         namelen = btrfs_root_ref_name_len(leaf, ref);
 512         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 513         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 514                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 515                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 516                namelen, namebuf);
 517 }
 518
 519 static int empty_uuid(const u8 *uuid)
 520 {
 521         int i;
 522
 523         for (i = 0; i < BTRFS_UUID_SIZE; i++)
 524                 if (uuid[i])
 525                         return 0;
 526         return 1;
 527 }
 528
 529 /*
 530  * Caller must ensure sizeof(*ret) >= 7 "RDONLY"
 531  */
 532 static void root_flags_to_str(u64 flags, char *ret)
 533 {
 534         if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
 535                 strcat(ret, "RDONLY");
 536         else
 537                 strcat(ret, "none");
 538 }
 539
 540 static void print_root(struct extent_buffer *leaf, int slot)
 541 {
 542         struct btrfs_root_item *ri;
 543         struct btrfs_root_item root_item;
 544         int len;
 545         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 546         char flags_str[32] = {0};
 547         struct btrfs_key drop_key;
 548
 549         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 550         len = btrfs_item_size_nr(leaf, slot);
 551
 552         memset(&root_item, 0, sizeof(root_item));
 553         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 554         root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
 555
 556         printf("\t\tgeneration %llu root_dirid %llu bytenr %llu level %hhu refs %u\n",
 557                 (unsigned long long)btrfs_root_generation(&root_item),
 558                 (unsigned long long)btrfs_root_dirid(&root_item),
 559                 (unsigned long long)btrfs_root_bytenr(&root_item),
 560                 btrfs_root_level(&root_item),
 561                 btrfs_root_refs(&root_item));
 562         printf("\t\tlastsnap %llu byte_limit %llu bytes_used %llu flags 0x%llx(%s)\n",
 563                 (unsigned long long)btrfs_root_last_snapshot(&root_item),
 564                 (unsigned long long)btrfs_root_limit(&root_item),
 565                 (unsigned long long)btrfs_root_used(&root_item),
 566                 (unsigned long long)btrfs_root_flags(&root_item),
 567                 flags_str);
 568
 569         if (root_item.generation == root_item.generation_v2) {
 570                 uuid_unparse(root_item.uuid, uuid_str);
 571                 printf("\t\tuuid %s\n", uuid_str);
 572                 if (!empty_uuid(root_item.parent_uuid)) {
 573                         uuid_unparse(root_item.parent_uuid, uuid_str);
 574                         printf("\t\tparent_uuid %s\n", uuid_str);
 575                 }
 576                 if (!empty_uuid(root_item.received_uuid)) {
 577                         uuid_unparse(root_item.received_uuid, uuid_str);
 578                         printf("\t\treceived_uuid %s\n", uuid_str);
 579                 }
 580                 if (root_item.ctransid) {
 581                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 582                                 btrfs_root_ctransid(&root_item),
 583                                 btrfs_root_otransid(&root_item),
 584                                 btrfs_root_stransid(&root_item),
 585                                 btrfs_root_rtransid(&root_item));
 586                 }
 587         }
 588
 589         btrfs_disk_key_to_cpu(&drop_key, &root_item.drop_progress);
 590         printf("\t\tdrop ");
 591         btrfs_print_key(&root_item.drop_progress);
 592         printf(" level %hhu\n", root_item.drop_level);
 593 }
 594
 595 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 596 {
 597         struct btrfs_free_space_header *header;
 598         struct btrfs_disk_key location;
 599
 600         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 601         btrfs_free_space_key(leaf, header, &location);
 602         printf("\t\tlocation ");
 603         btrfs_print_key(&location);
 604         printf("\n");
 605         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 606                (unsigned long long)btrfs_free_space_generation(leaf, header),
 607                (unsigned long long)btrfs_free_space_entries(leaf, header),
 608                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 609 }
 610
 611 void print_key_type(FILE *stream, u64 objectid, u8 type)
 612 {
 613         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 614                 fprintf(stream, "UNTYPED");
 615                 return;
 616         }
 617
 618         switch (type) {
 619         case BTRFS_INODE_ITEM_KEY:
 620                 fprintf(stream, "INODE_ITEM");
 621                 break;
 622         case BTRFS_INODE_REF_KEY:
 623                 fprintf(stream, "INODE_REF");
 624                 break;
 625         case BTRFS_INODE_EXTREF_KEY:
 626                 fprintf(stream, "INODE_EXTREF");
 627                 break;
 628         case BTRFS_DIR_ITEM_KEY:
 629                 fprintf(stream, "DIR_ITEM");
 630                 break;
 631         case BTRFS_DIR_INDEX_KEY:
 632                 fprintf(stream, "DIR_INDEX");
 633                 break;
 634         case BTRFS_DIR_LOG_ITEM_KEY:
 635                 fprintf(stream, "DIR_LOG_ITEM");
 636                 break;
 637         case BTRFS_DIR_LOG_INDEX_KEY:
 638                 fprintf(stream, "DIR_LOG_INDEX");
 639                 break;
 640         case BTRFS_XATTR_ITEM_KEY:
 641                 fprintf(stream, "XATTR_ITEM");
 642                 break;
 643         case BTRFS_ORPHAN_ITEM_KEY:
 644                 fprintf(stream, "ORPHAN_ITEM");
 645                 break;
 646         case BTRFS_ROOT_ITEM_KEY:
 647                 fprintf(stream, "ROOT_ITEM");
 648                 break;
 649         case BTRFS_ROOT_REF_KEY:
 650                 fprintf(stream, "ROOT_REF");
 651                 break;
 652         case BTRFS_ROOT_BACKREF_KEY:
 653                 fprintf(stream, "ROOT_BACKREF");
 654                 break;
 655         case BTRFS_EXTENT_ITEM_KEY:
 656                 fprintf(stream, "EXTENT_ITEM");
 657                 break;
 658         case BTRFS_METADATA_ITEM_KEY:
 659                 fprintf(stream, "METADATA_ITEM");
 660                 break;
 661         case BTRFS_TREE_BLOCK_REF_KEY:
 662                 fprintf(stream, "TREE_BLOCK_REF");
 663                 break;
 664         case BTRFS_SHARED_BLOCK_REF_KEY:
 665                 fprintf(stream, "SHARED_BLOCK_REF");
 666                 break;
 667         case BTRFS_EXTENT_DATA_REF_KEY:
 668                 fprintf(stream, "EXTENT_DATA_REF");
 669                 break;
 670         case BTRFS_SHARED_DATA_REF_KEY:
 671                 fprintf(stream, "SHARED_DATA_REF");
 672                 break;
 673         case BTRFS_EXTENT_REF_V0_KEY:
 674                 fprintf(stream, "EXTENT_REF_V0");
 675                 break;
 676         case BTRFS_CSUM_ITEM_KEY:
 677                 fprintf(stream, "CSUM_ITEM");
 678                 break;
 679         case BTRFS_EXTENT_CSUM_KEY:
 680                 fprintf(stream, "EXTENT_CSUM");
 681                 break;
 682         case BTRFS_EXTENT_DATA_KEY:
 683                 fprintf(stream, "EXTENT_DATA");
 684                 break;
 685         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 686                 fprintf(stream, "BLOCK_GROUP_ITEM");
 687                 break;
 688         case BTRFS_FREE_SPACE_INFO_KEY:
 689                 fprintf(stream, "FREE_SPACE_INFO");
 690                 break;
 691         case BTRFS_FREE_SPACE_EXTENT_KEY:
 692                 fprintf(stream, "FREE_SPACE_EXTENT");
 693                 break;
 694         case BTRFS_FREE_SPACE_BITMAP_KEY:
 695                 fprintf(stream, "FREE_SPACE_BITMAP");
 696                 break;
 697         case BTRFS_CHUNK_ITEM_KEY:
 698                 fprintf(stream, "CHUNK_ITEM");
 699                 break;
 700         case BTRFS_DEV_ITEM_KEY:
 701                 fprintf(stream, "DEV_ITEM");
 702                 break;
 703         case BTRFS_DEV_EXTENT_KEY:
 704                 fprintf(stream, "DEV_EXTENT");
 705                 break;
 706         case BTRFS_BALANCE_ITEM_KEY:
 707                 fprintf(stream, "BALANCE_ITEM");
 708                 break;
 709         case BTRFS_DEV_REPLACE_KEY:
 710                 fprintf(stream, "DEV_REPLACE");
 711                 break;
 712         case BTRFS_STRING_ITEM_KEY:
 713                 fprintf(stream, "STRING_ITEM");
 714                 break;
 715         case BTRFS_QGROUP_STATUS_KEY:
 716                 fprintf(stream, "QGROUP_STATUS");
 717                 break;
 718         case BTRFS_QGROUP_RELATION_KEY:
 719                 fprintf(stream, "QGROUP_RELATION");
 720                 break;
 721         case BTRFS_QGROUP_INFO_KEY:
 722                 fprintf(stream, "QGROUP_INFO");
 723                 break;
 724         case BTRFS_QGROUP_LIMIT_KEY:
 725                 fprintf(stream, "QGROUP_LIMIT");
 726                 break;
 727         case BTRFS_DEV_STATS_KEY:
 728                 fprintf(stream, "DEV_STATS");
 729                 break;
 730         case BTRFS_UUID_KEY_SUBVOL:
 731                 fprintf(stream, "UUID_KEY_SUBVOL");
 732                 break;
 733         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 734                 fprintf(stream, "UUID_KEY_RECEIVED_SUBVOL");
 735                 break;
 736         default:
 737                 fprintf(stream, "UNKNOWN.%d", type);
 738         };
 739 }
 740
 741 void print_objectid(FILE *stream, u64 objectid, u8 type)
 742 {
 743         switch (type) {
 744         case BTRFS_DEV_EXTENT_KEY:
 745                 /* device id */
 746                 fprintf(stream, "%llu", (unsigned long long)objectid);
 747                 return;
 748         case BTRFS_QGROUP_RELATION_KEY:
 749                 fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
 750                        btrfs_qgroup_subvid(objectid));
 751                 return;
 752         case BTRFS_UUID_KEY_SUBVOL:
 753         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 754                 fprintf(stream, "0x%016llx", (unsigned long long)objectid);
 755                 return;
 756         }
 757
 758         switch (objectid) {
 759         case BTRFS_ROOT_TREE_OBJECTID:
 760                 if (type == BTRFS_DEV_ITEM_KEY)
 761                         fprintf(stream, "DEV_ITEMS");
 762                 else
 763                         fprintf(stream, "ROOT_TREE");
 764                 break;
 765         case BTRFS_EXTENT_TREE_OBJECTID:
 766                 fprintf(stream, "EXTENT_TREE");
 767                 break;
 768         case BTRFS_CHUNK_TREE_OBJECTID:
 769                 fprintf(stream, "CHUNK_TREE");
 770                 break;
 771         case BTRFS_DEV_TREE_OBJECTID:
 772                 fprintf(stream, "DEV_TREE");
 773                 break;
 774         case BTRFS_FS_TREE_OBJECTID:
 775                 fprintf(stream, "FS_TREE");
 776                 break;
 777         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 778                 fprintf(stream, "ROOT_TREE_DIR");
 779                 break;
 780         case BTRFS_CSUM_TREE_OBJECTID:
 781                 fprintf(stream, "CSUM_TREE");
 782                 break;
 783         case BTRFS_BALANCE_OBJECTID:
 784                 fprintf(stream, "BALANCE");
 785                 break;
 786         case BTRFS_ORPHAN_OBJECTID:
 787                 fprintf(stream, "ORPHAN");
 788                 break;
 789         case BTRFS_TREE_LOG_OBJECTID:
 790                 fprintf(stream, "TREE_LOG");
 791                 break;
 792         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 793                 fprintf(stream, "LOG_FIXUP");
 794                 break;
 795         case BTRFS_TREE_RELOC_OBJECTID:
 796                 fprintf(stream, "TREE_RELOC");
 797                 break;
 798         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 799                 fprintf(stream, "DATA_RELOC_TREE");
 800                 break;
 801         case BTRFS_EXTENT_CSUM_OBJECTID:
 802                 fprintf(stream, "EXTENT_CSUM");
 803                 break;
 804         case BTRFS_FREE_SPACE_OBJECTID:
 805                 fprintf(stream, "FREE_SPACE");
 806                 break;
 807         case BTRFS_FREE_INO_OBJECTID:
 808                 fprintf(stream, "FREE_INO");
 809                 break;
 810         case BTRFS_QUOTA_TREE_OBJECTID:
 811                 fprintf(stream, "QUOTA_TREE");
 812                 break;
 813         case BTRFS_UUID_TREE_OBJECTID:
 814                 fprintf(stream, "UUID_TREE");
 815                 break;
 816         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 817                 fprintf(stream, "FREE_SPACE_TREE");
 818                 break;
 819         case BTRFS_MULTIPLE_OBJECTIDS:
 820                 fprintf(stream, "MULTIPLE");
 821                 break;
 822         case (u64)-1:
 823                 fprintf(stream, "-1");
 824                 break;
 825         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 826                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 827                         fprintf(stream, "FIRST_CHUNK_TREE");
 828                         break;
 829                 }
 830                 /* fall-thru */
 831         default:
 832                 fprintf(stream, "%llu", (unsigned long long)objectid);
 833         }
 834 }
 835
 836 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 837 {
 838         u64 objectid = btrfs_disk_key_objectid(disk_key);
 839         u8 type = btrfs_disk_key_type(disk_key);
 840         u64 offset = btrfs_disk_key_offset(disk_key);
 841
 842         printf("key (");
 843         print_objectid(stdout, objectid, type);
 844         printf(" ");
 845         print_key_type(stdout, objectid, type);
 846         switch (type) {
 847         case BTRFS_QGROUP_RELATION_KEY:
 848         case BTRFS_QGROUP_INFO_KEY:
 849         case BTRFS_QGROUP_LIMIT_KEY:
 850                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 851                        btrfs_qgroup_subvid(offset));
 852                 break;
 853         case BTRFS_UUID_KEY_SUBVOL:
 854         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 855                 printf(" 0x%016llx)", (unsigned long long)offset);
 856                 break;
 857         default:
 858                 if (offset == (u64)-1)
 859                         printf(" -1)");
 860                 else
 861                         printf(" %llu)", (unsigned long long)offset);
 862                 break;
 863         }
 864 }
 865
 866 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 867                             u32 item_size)
 868 {
 869         if (item_size & (sizeof(u64) - 1)) {
 870                 printf("btrfs: uuid item with illegal size %lu!\n",
 871                        (unsigned long)item_size);
 872                 return;
 873         }
 874         while (item_size) {
 875                 __le64 subvol_id;
 876
 877                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 878                 printf("\t\tsubvol_id %llu\n",
 879                         (unsigned long long)le64_to_cpu(subvol_id));
 880                 item_size -= sizeof(u64);
 881                 offset += sizeof(u64);
 882         }
 883 }
 884
 885 /* Btrfs inode flag stringification helper */
 886 #define STRCAT_ONE_INODE_FLAG(flags, name, empty, dst) ({                       \
 887         if (flags & BTRFS_INODE_##name) {                               \
 888                 if (!empty)                                             \
 889                         strcat(dst, "|");                               \
 890                 strcat(dst, #name);                                     \
 891                 empty = 0;                                              \
 892         }                                                               \
 893 })
 894
 895 /*
 896  * Caller should ensure sizeof(*ret) >= 102: all charactors plus '|' of
 897  * BTRFS_INODE_* flags
 898  */
 899 static void inode_flags_to_str(u64 flags, char *ret)
 900 {
 901         int empty = 1;
 902
 903         STRCAT_ONE_INODE_FLAG(flags, NODATASUM, empty, ret);
 904         STRCAT_ONE_INODE_FLAG(flags, NODATACOW, empty, ret);
 905         STRCAT_ONE_INODE_FLAG(flags, READONLY, empty, ret);
 906         STRCAT_ONE_INODE_FLAG(flags, NOCOMPRESS, empty, ret);
 907         STRCAT_ONE_INODE_FLAG(flags, PREALLOC, empty, ret);
 908         STRCAT_ONE_INODE_FLAG(flags, SYNC, empty, ret);
 909         STRCAT_ONE_INODE_FLAG(flags, IMMUTABLE, empty, ret);
 910         STRCAT_ONE_INODE_FLAG(flags, APPEND, empty, ret);
 911         STRCAT_ONE_INODE_FLAG(flags, NODUMP, empty, ret);
 912         STRCAT_ONE_INODE_FLAG(flags, NOATIME, empty, ret);
 913         STRCAT_ONE_INODE_FLAG(flags, DIRSYNC, empty, ret);
 914         STRCAT_ONE_INODE_FLAG(flags, COMPRESS, empty, ret);
 915         if (empty)
 916                 strcat(ret, "none");
 917 }
 918
 919 static void print_timespec(struct extent_buffer *eb,
 920                 struct btrfs_timespec *timespec, const char *prefix,
 921                 const char *suffix)
 922 {
 923         struct tm tm;
 924         u64 tmp_u64;
 925         u32 tmp_u32;
 926         time_t tmp_time;
 927         char timestamp[256];
 928
 929         tmp_u64 = btrfs_timespec_sec(eb, timespec);
 930         tmp_u32 = btrfs_timespec_nsec(eb, timespec);
 931         tmp_time = tmp_u64;
 932         localtime_r(&tmp_time, &tm);
 933         strftime(timestamp, sizeof(timestamp),
 934                         "%Y-%m-%d %H:%M:%S", &tm);
 935         printf("%s%llu.%u (%s)%s", prefix, (unsigned long long)tmp_u64, tmp_u32,
 936                         timestamp, suffix);
 937 }
 938
 939 static void print_inode_item(struct extent_buffer *eb,
 940                 struct btrfs_inode_item *ii)
 941 {
 942         char flags_str[256];
 943
 944         memset(flags_str, 0, sizeof(flags_str));
 945         inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
 946         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 947                "\t\tblock group %llu mode %o links %u uid %u gid %u rdev %llu\n"
 948                "\t\tsequence %llu flags 0x%llx(%s)\n",
 949                (unsigned long long)btrfs_inode_generation(eb, ii),
 950                (unsigned long long)btrfs_inode_transid(eb, ii),
 951                (unsigned long long)btrfs_inode_size(eb, ii),
 952                (unsigned long long)btrfs_inode_nbytes(eb, ii),
 953                (unsigned long long)btrfs_inode_block_group(eb,ii),
 954                btrfs_inode_mode(eb, ii),
 955                btrfs_inode_nlink(eb, ii),
 956                btrfs_inode_uid(eb, ii),
 957                btrfs_inode_gid(eb, ii),
 958                (unsigned long long)btrfs_inode_rdev(eb,ii),
 959                (unsigned long long)btrfs_inode_flags(eb,ii),
 960                (unsigned long long)btrfs_inode_sequence(eb, ii),
 961                flags_str);
 962         print_timespec(eb, btrfs_inode_atime(ii), "\t\tatime ", "\n");
 963         print_timespec(eb, btrfs_inode_ctime(ii), "\t\tctime ", "\n");
 964         print_timespec(eb, btrfs_inode_mtime(ii), "\t\tmtime ", "\n");
 965         print_timespec(eb, btrfs_inode_otime(ii), "\t\totime ", "\n");
 966 }
 967
 968 static void print_disk_balance_args(struct btrfs_disk_balance_args *ba)
 969 {
 970         printf("\t\tprofiles %llu devid %llu target %llu flags %llu\n",
 971                         (unsigned long long)le64_to_cpu(ba->profiles),
 972                         (unsigned long long)le64_to_cpu(ba->devid),
 973                         (unsigned long long)le64_to_cpu(ba->target),
 974                         (unsigned long long)le64_to_cpu(ba->flags));
 975         printf("\t\tusage_min %u usage_max %u pstart %llu pend %llu\n",
 976                         le32_to_cpu(ba->usage_min),
 977                         le32_to_cpu(ba->usage_max),
 978                         (unsigned long long)le64_to_cpu(ba->pstart),
 979                         (unsigned long long)le64_to_cpu(ba->pend));
 980         printf("\t\tvstart %llu vend %llu limit_min %u limit_max %u\n",
 981                         (unsigned long long)le64_to_cpu(ba->vstart),
 982                         (unsigned long long)le64_to_cpu(ba->vend),
 983                         le32_to_cpu(ba->limit_min),
 984                         le32_to_cpu(ba->limit_max));
 985         printf("\t\tstripes_min %u stripes_max %u\n",
 986                         le32_to_cpu(ba->stripes_min),
 987                         le32_to_cpu(ba->stripes_max));
 988 }
 989
 990 static void print_balance_item(struct extent_buffer *eb,
 991                 struct btrfs_balance_item *bi)
 992 {
 993         printf("\t\tbalance status flags %llu\n",
 994                         btrfs_balance_item_flags(eb, bi));
 995
 996         printf("\t\tDATA\n");
 997         print_disk_balance_args(btrfs_balance_item_data(eb, bi));
 998         printf("\t\tMETADATA\n");
 999         print_disk_balance_args(btrfs_balance_item_meta(eb, bi));
1000         printf("\t\tSYSTEM\n");
1001         print_disk_balance_args(btrfs_balance_item_sys(eb, bi));
1002 }
1003
1004 static void print_dev_stats(struct extent_buffer *eb,
1005                 struct btrfs_dev_stats_item *stats, u32 size)
1006 {
1007         int i;
1008         u32 known = BTRFS_DEV_STAT_VALUES_MAX * sizeof(__le64);
1009         __le64 *values = btrfs_dev_stats_values(eb, stats);
1010
1011         printf("\t\tdevice stats\n");
1012         printf("\t\twrite_errs %llu read_errs %llu flush_errs %llu corruption_errs %llu generation %llu\n",
1013                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_WRITE_ERRS]),
1014                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_READ_ERRS]),
1015                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_FLUSH_ERRS]),
1016                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_CORRUPTION_ERRS]),
1017                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_GENERATION_ERRS]));
1018
1019         if (known < size) {
1020                 printf("\t\tunknown stats item bytes %u", size - known);
1021                 for (i = BTRFS_DEV_STAT_VALUES_MAX; i * sizeof(__le64) < size; i++) {
1022                         printf("\t\tunknown item %u offset %lu value %llu\n",
1023                                 i, i * sizeof(__le64),
1024                                 (unsigned long long)le64_to_cpu(values[i]));
1025                 }
1026         }
1027 }
1028
1029 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *eb)
1030 {
1031         int i;
1032         struct btrfs_item *item;
1033         struct btrfs_disk_key disk_key;
1034         u32 nr = btrfs_header_nritems(eb);
1035         u64 objectid;
1036         u32 type;
1037         u64 offset;
1038         char flags_str[256];
1039         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
1040         u8 uuid[BTRFS_UUID_SIZE];
1041
1042         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
1043                 (unsigned long long)btrfs_header_bytenr(eb), nr,
1044                 btrfs_leaf_free_space(root, eb),
1045                 (unsigned long long)btrfs_header_generation(eb),
1046                 (unsigned long long)btrfs_header_owner(eb));
1047         print_uuids(eb);
1048         fflush(stdout);
1049         for (i = 0 ; i < nr ; i++) {
1050                 u32 item_size;
1051                 void *ptr;
1052
1053                 item = btrfs_item_nr(i);
1054                 item_size = btrfs_item_size(eb, item);
1055                 /* Untyped extraction of slot from btrfs_item_ptr */
1056                 ptr = btrfs_item_ptr(eb, i, void*);
1057                 btrfs_item_key(eb, &disk_key, i);
1058                 objectid = btrfs_disk_key_objectid(&disk_key);
1059                 type = btrfs_disk_key_type(&disk_key);
1060                 offset = btrfs_disk_key_offset(&disk_key);
1061                 printf("\titem %d ", i);
1062                 btrfs_print_key(&disk_key);
1063                 printf(" itemoff %d itemsize %d\n",
1064                         btrfs_item_offset(eb, item),
1065                         btrfs_item_size(eb, item));
1066
1067                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
1068                         print_free_space_header(eb, i);
1069
1070                 switch (type) {
1071                 case BTRFS_INODE_ITEM_KEY:
1072                         print_inode_item(eb, ptr);
1073                         break;
1074                 case BTRFS_INODE_REF_KEY:
1075                         print_inode_ref_item(eb, item_size, ptr);
1076                         break;
1077                 case BTRFS_INODE_EXTREF_KEY:
1078                         print_inode_extref_item(eb, item_size, ptr);
1079                         break;
1080                 case BTRFS_DIR_ITEM_KEY:
1081                 case BTRFS_DIR_INDEX_KEY:
1082                 case BTRFS_XATTR_ITEM_KEY:
1083                         print_dir_item(eb, item_size, ptr);
1084                         break;
1085                 case BTRFS_DIR_LOG_INDEX_KEY:
1086                 case BTRFS_DIR_LOG_ITEM_KEY: {
1087                         struct btrfs_dir_log_item *dlog;
1088
1089                         dlog = btrfs_item_ptr(eb, i, struct btrfs_dir_log_item);
1090                         printf("\t\tdir log end %Lu\n",
1091                                (unsigned long long)btrfs_dir_log_end(eb, dlog));
1092                         break;
1093                         }
1094                 case BTRFS_ORPHAN_ITEM_KEY:
1095                         printf("\t\torphan item\n");
1096                         break;
1097                 case BTRFS_ROOT_ITEM_KEY:
1098                         print_root(eb, i);
1099                         break;
1100                 case BTRFS_ROOT_REF_KEY:
1101                         print_root_ref(eb, i, "ref");
1102                         break;
1103                 case BTRFS_ROOT_BACKREF_KEY:
1104                         print_root_ref(eb, i, "backref");
1105                         break;
1106                 case BTRFS_EXTENT_ITEM_KEY:
1107                         print_extent_item(eb, i, 0);
1108                         break;
1109                 case BTRFS_METADATA_ITEM_KEY:
1110                         print_extent_item(eb, i, 1);
1111                         break;
1112                 case BTRFS_TREE_BLOCK_REF_KEY:
1113                         printf("\t\ttree block backref\n");
1114                         break;
1115                 case BTRFS_SHARED_BLOCK_REF_KEY:
1116                         printf("\t\tshared block backref\n");
1117                         break;
1118                 case BTRFS_EXTENT_DATA_REF_KEY: {
1119                         struct btrfs_extent_data_ref *dref;
1120
1121                         dref = btrfs_item_ptr(eb, i, struct btrfs_extent_data_ref);
1122                         printf("\t\textent data backref root %llu "
1123                                "objectid %llu offset %llu count %u\n",
1124                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
1125                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
1126                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
1127                                btrfs_extent_data_ref_count(eb, dref));
1128                         break;
1129                         }
1130                 case BTRFS_SHARED_DATA_REF_KEY: {
1131                         struct btrfs_shared_data_ref *sref;
1132                         sref = btrfs_item_ptr(eb, i, struct btrfs_shared_data_ref);
1133                         printf("\t\tshared data backref count %u\n",
1134                                btrfs_shared_data_ref_count(eb, sref));
1135                         break;
1136                         }
1137                 case BTRFS_EXTENT_REF_V0_KEY:
1138 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
1139                         print_extent_ref_v0(eb, i);
1140 #else
1141                         BUG();
1142 #endif
1143                         break;
1144                 case BTRFS_CSUM_ITEM_KEY:
1145                         printf("\t\tcsum item\n");
1146                         break;
1147                 case BTRFS_EXTENT_CSUM_KEY:
1148                         printf("\t\textent csum item\n");
1149                         break;
1150                 case BTRFS_EXTENT_DATA_KEY:
1151                         print_file_extent_item(eb, item, i, ptr);
1152                         break;
1153                 case BTRFS_BLOCK_GROUP_ITEM_KEY: {
1154                         struct btrfs_block_group_item bg_item;
1155
1156                         read_extent_buffer(eb, &bg_item, (unsigned long)ptr,
1157                                            sizeof(bg_item));
1158                         memset(flags_str, 0, sizeof(flags_str));
1159                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
1160                                         flags_str);
1161                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
1162                                (unsigned long long)btrfs_block_group_used(&bg_item),
1163                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
1164                                flags_str);
1165                         break;
1166                         }
1167                 case BTRFS_FREE_SPACE_INFO_KEY: {
1168                         struct btrfs_free_space_info *free_info;
1169
1170                         free_info = btrfs_item_ptr(eb, i, struct btrfs_free_space_info);
1171                         printf("\t\tfree space info extent count %u flags %u\n",
1172                                (unsigned)btrfs_free_space_extent_count(eb, free_info),
1173                                (unsigned)btrfs_free_space_flags(eb, free_info));
1174                         break;
1175                         }
1176                 case BTRFS_FREE_SPACE_EXTENT_KEY:
1177                         printf("\t\tfree space extent\n");
1178                         break;
1179                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1180                         printf("\t\tfree space bitmap\n");
1181                         break;
1182                 case BTRFS_CHUNK_ITEM_KEY:
1183                         print_chunk(eb, ptr);
1184                         break;
1185                 case BTRFS_DEV_ITEM_KEY:
1186                         print_dev_item(eb, ptr);
1187                         break;
1188                 case BTRFS_DEV_EXTENT_KEY: {
1189                         struct btrfs_dev_extent *dev_extent;
1190
1191                         dev_extent = btrfs_item_ptr(eb, i,
1192                                                     struct btrfs_dev_extent);
1193                         read_extent_buffer(eb, uuid,
1194                                 (unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
1195                                 BTRFS_UUID_SIZE);
1196                         uuid_unparse(uuid, uuid_str);
1197                         printf("\t\tdev extent chunk_tree %llu\n"
1198                                "\t\tchunk_objectid %llu chunk_offset %llu "
1199                                "length %llu\n"
1200                                "\t\tchunk_tree_uuid %s\n",
1201                                (unsigned long long)
1202                                btrfs_dev_extent_chunk_tree(eb, dev_extent),
1203                                (unsigned long long)
1204                                btrfs_dev_extent_chunk_objectid(eb, dev_extent),
1205                                (unsigned long long)
1206                                btrfs_dev_extent_chunk_offset(eb, dev_extent),
1207                                (unsigned long long)
1208                                btrfs_dev_extent_length(eb, dev_extent),
1209                                uuid_str);
1210                         break;
1211                         }
1212                 case BTRFS_QGROUP_STATUS_KEY: {
1213                         struct btrfs_qgroup_status_item *qg_status;
1214
1215                         qg_status = btrfs_item_ptr(eb, i,
1216                                         struct btrfs_qgroup_status_item);
1217                         memset(flags_str, 0, sizeof(flags_str));
1218                         qgroup_flags_to_str(btrfs_qgroup_status_flags(eb, qg_status),
1219                                         flags_str);
1220                         printf("\t\tversion %llu generation %llu flags %s "
1221                                 "scan %lld\n",
1222                                 (unsigned long long)
1223                                 btrfs_qgroup_status_version(eb, qg_status),
1224                                 (unsigned long long)
1225                                 btrfs_qgroup_status_generation(eb, qg_status),
1226                                 flags_str,
1227                                 (unsigned long long)
1228                                 btrfs_qgroup_status_rescan(eb, qg_status));
1229                         break;
1230                         }
1231                 case BTRFS_QGROUP_RELATION_KEY:
1232                         break;
1233                 case BTRFS_QGROUP_INFO_KEY: {
1234                         struct btrfs_qgroup_info_item *qg_info;
1235
1236                         qg_info = btrfs_item_ptr(eb, i,
1237                                                  struct btrfs_qgroup_info_item);
1238                         printf("\t\tgeneration %llu\n"
1239                              "\t\treferenced %llu referenced_compressed %llu\n"
1240                              "\t\texclusive %llu exclusive_compressed %llu\n",
1241                                (unsigned long long)
1242                                btrfs_qgroup_info_generation(eb, qg_info),
1243                                (unsigned long long)
1244                                btrfs_qgroup_info_referenced(eb, qg_info),
1245                                (unsigned long long)
1246                                btrfs_qgroup_info_referenced_compressed(eb,
1247                                                                        qg_info),
1248                                (unsigned long long)
1249                                btrfs_qgroup_info_exclusive(eb, qg_info),
1250                                (unsigned long long)
1251                                btrfs_qgroup_info_exclusive_compressed(eb,
1252                                                                       qg_info));
1253                         break;
1254                         }
1255                 case BTRFS_QGROUP_LIMIT_KEY: {
1256                         struct btrfs_qgroup_limit_item *qg_limit;
1257
1258                         qg_limit = btrfs_item_ptr(eb, i,
1259                                          struct btrfs_qgroup_limit_item);
1260                         printf("\t\tflags %llx\n"
1261                              "\t\tmax_referenced %lld max_exclusive %lld\n"
1262                              "\t\trsv_referenced %lld rsv_exclusive %lld\n",
1263                                (unsigned long long)
1264                                btrfs_qgroup_limit_flags(eb, qg_limit),
1265                                (long long)
1266                                btrfs_qgroup_limit_max_referenced(eb, qg_limit),
1267                                (long long)
1268                                btrfs_qgroup_limit_max_exclusive(eb, qg_limit),
1269                                (long long)
1270                                btrfs_qgroup_limit_rsv_referenced(eb, qg_limit),
1271                                (long long)
1272                                btrfs_qgroup_limit_rsv_exclusive(eb, qg_limit));
1273                         break;
1274                         }
1275                 case BTRFS_UUID_KEY_SUBVOL:
1276                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1277                         print_uuid_item(eb, btrfs_item_ptr_offset(eb, i),
1278                                         btrfs_item_size_nr(eb, i));
1279                         break;
1280                 case BTRFS_STRING_ITEM_KEY: {
1281                         const char *str = eb->data + btrfs_item_ptr_offset(eb, i);
1282
1283                         printf("\t\titem data %.*s\n", item_size, str);
1284                         break;
1285                         }
1286                 case BTRFS_PERSISTENT_ITEM_KEY:
1287                         printf("\t\tpersistent item objectid ");
1288                         print_objectid(stdout, objectid, BTRFS_PERSISTENT_ITEM_KEY);
1289                         printf(" offset %llu\n", (unsigned long long)offset);
1290                         switch (objectid) {
1291                         case BTRFS_DEV_STATS_OBJECTID:
1292                                 print_dev_stats(eb, ptr, item_size);
1293                                 break;
1294                         default:
1295                                 printf("\t\tunknown persistent item objectid %llu\n",
1296                                                 objectid);
1297                         }
1298                         break;
1299                 case BTRFS_TEMPORARY_ITEM_KEY:
1300                         printf("\t\ttemporary item objectid ");
1301                         print_objectid(stdout, objectid, BTRFS_TEMPORARY_ITEM_KEY);
1302                         printf(" offset %llu\n", (unsigned long long)offset);
1303                         switch (objectid) {
1304                         case BTRFS_BALANCE_OBJECTID:
1305                                 print_balance_item(eb, ptr);
1306                                 break;
1307                         default:
1308                                 printf("\t\tunknown temporary item objectid %llu\n",
1309                                                 objectid);
1310                         }
1311                         break;
1312                 };
1313                 fflush(stdout);
1314         }
1315 }
1316
1317 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1318 {
1319         int i;
1320         u32 nr;
1321         u32 size;
1322         struct btrfs_disk_key disk_key;
1323         struct btrfs_key key;
1324         struct extent_buffer *next;
1325
1326         if (!eb)
1327                 return;
1328         nr = btrfs_header_nritems(eb);
1329         if (btrfs_is_leaf(eb)) {
1330                 btrfs_print_leaf(root, eb);
1331                 return;
1332         }
1333         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1334                (unsigned long long)eb->start,
1335                 btrfs_header_level(eb), nr,
1336                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1337                 (unsigned long long)btrfs_header_generation(eb),
1338                 (unsigned long long)btrfs_header_owner(eb));
1339         print_uuids(eb);
1340         fflush(stdout);
1341         size = root->nodesize;
1342         for (i = 0; i < nr; i++) {
1343                 u64 blocknr = btrfs_node_blockptr(eb, i);
1344                 btrfs_node_key(eb, &disk_key, i);
1345                 btrfs_disk_key_to_cpu(&key, &disk_key);
1346                 printf("\t");
1347                 btrfs_print_key(&disk_key);
1348                 printf(" block %llu (%llu) gen %llu\n",
1349                        (unsigned long long)blocknr,
1350                        (unsigned long long)blocknr / size,
1351                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1352                 fflush(stdout);
1353         }
1354         if (!follow)
1355                 return;
1356
1357         for (i = 0; i < nr; i++) {
1358                 next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
1359                                 btrfs_node_ptr_generation(eb, i));
1360                 if (!extent_buffer_uptodate(next)) {
1361                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1362                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1363                                 (unsigned long long)btrfs_header_owner(eb));
1364                         continue;
1365                 }
1366                 if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
1367                         warning(
1368         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1369                                 i, btrfs_header_level(next),
1370                                 btrfs_header_level(eb));
1371                         goto out;
1372                 }
1373                 if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
1374                         warning(
1375         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1376                                 i, btrfs_header_level(next),
1377                                 btrfs_header_level(eb));
1378                         goto out;
1379                 }
1380                 btrfs_print_tree(root, next, 1);
1381                 free_extent_buffer(next);
1382         }
1383
1384         return;
1385
1386 out:
1387         free_extent_buffer(next);
1388 }