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         static const char* key_to_str[256] = {
 614                 [BTRFS_INODE_ITEM_KEY]          = "INODE_ITEM",
 615                 [BTRFS_INODE_REF_KEY]           = "INODE_REF",
 616                 [BTRFS_INODE_EXTREF_KEY]        = "INODE_EXTREF",
 617                 [BTRFS_DIR_ITEM_KEY]            = "DIR_ITEM",
 618                 [BTRFS_DIR_INDEX_KEY]           = "DIR_INDEX",
 619                 [BTRFS_DIR_LOG_ITEM_KEY]        = "DIR_LOG_ITEM",
 620                 [BTRFS_DIR_LOG_INDEX_KEY]       = "DIR_LOG_INDEX",
 621                 [BTRFS_XATTR_ITEM_KEY]          = "XATTR_ITEM",
 622                 [BTRFS_ORPHAN_ITEM_KEY]         = "ORPHAN_ITEM",
 623                 [BTRFS_ROOT_ITEM_KEY]           = "ROOT_ITEM",
 624                 [BTRFS_ROOT_REF_KEY]            = "ROOT_REF",
 625                 [BTRFS_ROOT_BACKREF_KEY]        = "ROOT_BACKREF",
 626                 [BTRFS_EXTENT_ITEM_KEY]         = "EXTENT_ITEM",
 627                 [BTRFS_METADATA_ITEM_KEY]       = "METADATA_ITEM",
 628                 [BTRFS_TREE_BLOCK_REF_KEY]      = "TREE_BLOCK_REF",
 629                 [BTRFS_SHARED_BLOCK_REF_KEY]    = "SHARED_BLOCK_REF",
 630                 [BTRFS_EXTENT_DATA_REF_KEY]     = "EXTENT_DATA_REF",
 631                 [BTRFS_SHARED_DATA_REF_KEY]     = "SHARED_DATA_REF",
 632                 [BTRFS_EXTENT_REF_V0_KEY]       = "EXTENT_REF_V0",
 633                 [BTRFS_CSUM_ITEM_KEY]           = "CSUM_ITEM",
 634                 [BTRFS_EXTENT_CSUM_KEY]         = "EXTENT_CSUM",
 635                 [BTRFS_EXTENT_DATA_KEY]         = "EXTENT_DATA",
 636                 [BTRFS_BLOCK_GROUP_ITEM_KEY]    = "BLOCK_GROUP_ITEM",
 637                 [BTRFS_FREE_SPACE_INFO_KEY]     = "FREE_SPACE_INFO",
 638                 [BTRFS_FREE_SPACE_EXTENT_KEY]   = "FREE_SPACE_EXTENT",
 639                 [BTRFS_FREE_SPACE_BITMAP_KEY]   = "FREE_SPACE_BITMAP",
 640                 [BTRFS_CHUNK_ITEM_KEY]          = "CHUNK_ITEM",
 641                 [BTRFS_DEV_ITEM_KEY]            = "DEV_ITEM",
 642                 [BTRFS_DEV_EXTENT_KEY]          = "DEV_EXTENT",
 643                 [BTRFS_BALANCE_ITEM_KEY]        = "BALANCE_ITEM",
 644                 [BTRFS_DEV_REPLACE_KEY]         = "DEV_REPLACE",
 645                 [BTRFS_STRING_ITEM_KEY]         = "STRING_ITEM",
 646                 [BTRFS_QGROUP_STATUS_KEY]       = "QGROUP_STATUS",
 647                 [BTRFS_QGROUP_RELATION_KEY]     = "QGROUP_RELATION",
 648                 [BTRFS_QGROUP_INFO_KEY]         = "QGROUP_INFO",
 649                 [BTRFS_QGROUP_LIMIT_KEY]        = "QGROUP_LIMIT",
 650                 [BTRFS_DEV_STATS_KEY]           = "DEV_STATS",
 651                 [BTRFS_UUID_KEY_SUBVOL]         = "UUID_KEY_SUBVOL",
 652                 [BTRFS_UUID_KEY_RECEIVED_SUBVOL] = "UUID_KEY_RECEIVED_SUBVOL",
 653         };
 654
 655         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 656                 fprintf(stream, "UNTYPED");
 657                 return;
 658         }
 659
 660
 661         if (key_to_str[type])
 662                 fputs(key_to_str[type], stream);
 663         else
 664                 fprintf(stream, "UNKNOWN.%d", type);
 665 }
 666
 667 void print_objectid(FILE *stream, u64 objectid, u8 type)
 668 {
 669         switch (type) {
 670         case BTRFS_DEV_EXTENT_KEY:
 671                 /* device id */
 672                 fprintf(stream, "%llu", (unsigned long long)objectid);
 673                 return;
 674         case BTRFS_QGROUP_RELATION_KEY:
 675                 fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
 676                        btrfs_qgroup_subvid(objectid));
 677                 return;
 678         case BTRFS_UUID_KEY_SUBVOL:
 679         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 680                 fprintf(stream, "0x%016llx", (unsigned long long)objectid);
 681                 return;
 682         }
 683
 684         switch (objectid) {
 685         case BTRFS_ROOT_TREE_OBJECTID:
 686                 if (type == BTRFS_DEV_ITEM_KEY)
 687                         fprintf(stream, "DEV_ITEMS");
 688                 else
 689                         fprintf(stream, "ROOT_TREE");
 690                 break;
 691         case BTRFS_EXTENT_TREE_OBJECTID:
 692                 fprintf(stream, "EXTENT_TREE");
 693                 break;
 694         case BTRFS_CHUNK_TREE_OBJECTID:
 695                 fprintf(stream, "CHUNK_TREE");
 696                 break;
 697         case BTRFS_DEV_TREE_OBJECTID:
 698                 fprintf(stream, "DEV_TREE");
 699                 break;
 700         case BTRFS_FS_TREE_OBJECTID:
 701                 fprintf(stream, "FS_TREE");
 702                 break;
 703         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 704                 fprintf(stream, "ROOT_TREE_DIR");
 705                 break;
 706         case BTRFS_CSUM_TREE_OBJECTID:
 707                 fprintf(stream, "CSUM_TREE");
 708                 break;
 709         case BTRFS_BALANCE_OBJECTID:
 710                 fprintf(stream, "BALANCE");
 711                 break;
 712         case BTRFS_ORPHAN_OBJECTID:
 713                 fprintf(stream, "ORPHAN");
 714                 break;
 715         case BTRFS_TREE_LOG_OBJECTID:
 716                 fprintf(stream, "TREE_LOG");
 717                 break;
 718         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 719                 fprintf(stream, "LOG_FIXUP");
 720                 break;
 721         case BTRFS_TREE_RELOC_OBJECTID:
 722                 fprintf(stream, "TREE_RELOC");
 723                 break;
 724         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 725                 fprintf(stream, "DATA_RELOC_TREE");
 726                 break;
 727         case BTRFS_EXTENT_CSUM_OBJECTID:
 728                 fprintf(stream, "EXTENT_CSUM");
 729                 break;
 730         case BTRFS_FREE_SPACE_OBJECTID:
 731                 fprintf(stream, "FREE_SPACE");
 732                 break;
 733         case BTRFS_FREE_INO_OBJECTID:
 734                 fprintf(stream, "FREE_INO");
 735                 break;
 736         case BTRFS_QUOTA_TREE_OBJECTID:
 737                 fprintf(stream, "QUOTA_TREE");
 738                 break;
 739         case BTRFS_UUID_TREE_OBJECTID:
 740                 fprintf(stream, "UUID_TREE");
 741                 break;
 742         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 743                 fprintf(stream, "FREE_SPACE_TREE");
 744                 break;
 745         case BTRFS_MULTIPLE_OBJECTIDS:
 746                 fprintf(stream, "MULTIPLE");
 747                 break;
 748         case (u64)-1:
 749                 fprintf(stream, "-1");
 750                 break;
 751         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 752                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 753                         fprintf(stream, "FIRST_CHUNK_TREE");
 754                         break;
 755                 }
 756                 /* fall-thru */
 757         default:
 758                 fprintf(stream, "%llu", (unsigned long long)objectid);
 759         }
 760 }
 761
 762 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 763 {
 764         u64 objectid = btrfs_disk_key_objectid(disk_key);
 765         u8 type = btrfs_disk_key_type(disk_key);
 766         u64 offset = btrfs_disk_key_offset(disk_key);
 767
 768         printf("key (");
 769         print_objectid(stdout, objectid, type);
 770         printf(" ");
 771         print_key_type(stdout, objectid, type);
 772         switch (type) {
 773         case BTRFS_QGROUP_RELATION_KEY:
 774         case BTRFS_QGROUP_INFO_KEY:
 775         case BTRFS_QGROUP_LIMIT_KEY:
 776                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 777                        btrfs_qgroup_subvid(offset));
 778                 break;
 779         case BTRFS_UUID_KEY_SUBVOL:
 780         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 781                 printf(" 0x%016llx)", (unsigned long long)offset);
 782                 break;
 783         default:
 784                 if (offset == (u64)-1)
 785                         printf(" -1)");
 786                 else
 787                         printf(" %llu)", (unsigned long long)offset);
 788                 break;
 789         }
 790 }
 791
 792 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 793                             u32 item_size)
 794 {
 795         if (item_size & (sizeof(u64) - 1)) {
 796                 printf("btrfs: uuid item with illegal size %lu!\n",
 797                        (unsigned long)item_size);
 798                 return;
 799         }
 800         while (item_size) {
 801                 __le64 subvol_id;
 802
 803                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 804                 printf("\t\tsubvol_id %llu\n",
 805                         (unsigned long long)le64_to_cpu(subvol_id));
 806                 item_size -= sizeof(u64);
 807                 offset += sizeof(u64);
 808         }
 809 }
 810
 811 /* Btrfs inode flag stringification helper */
 812 #define STRCAT_ONE_INODE_FLAG(flags, name, empty, dst) ({                       \
 813         if (flags & BTRFS_INODE_##name) {                               \
 814                 if (!empty)                                             \
 815                         strcat(dst, "|");                               \
 816                 strcat(dst, #name);                                     \
 817                 empty = 0;                                              \
 818         }                                                               \
 819 })
 820
 821 /*
 822  * Caller should ensure sizeof(*ret) >= 102: all charactors plus '|' of
 823  * BTRFS_INODE_* flags
 824  */
 825 static void inode_flags_to_str(u64 flags, char *ret)
 826 {
 827         int empty = 1;
 828
 829         STRCAT_ONE_INODE_FLAG(flags, NODATASUM, empty, ret);
 830         STRCAT_ONE_INODE_FLAG(flags, NODATACOW, empty, ret);
 831         STRCAT_ONE_INODE_FLAG(flags, READONLY, empty, ret);
 832         STRCAT_ONE_INODE_FLAG(flags, NOCOMPRESS, empty, ret);
 833         STRCAT_ONE_INODE_FLAG(flags, PREALLOC, empty, ret);
 834         STRCAT_ONE_INODE_FLAG(flags, SYNC, empty, ret);
 835         STRCAT_ONE_INODE_FLAG(flags, IMMUTABLE, empty, ret);
 836         STRCAT_ONE_INODE_FLAG(flags, APPEND, empty, ret);
 837         STRCAT_ONE_INODE_FLAG(flags, NODUMP, empty, ret);
 838         STRCAT_ONE_INODE_FLAG(flags, NOATIME, empty, ret);
 839         STRCAT_ONE_INODE_FLAG(flags, DIRSYNC, empty, ret);
 840         STRCAT_ONE_INODE_FLAG(flags, COMPRESS, empty, ret);
 841         if (empty)
 842                 strcat(ret, "none");
 843 }
 844
 845 static void print_timespec(struct extent_buffer *eb,
 846                 struct btrfs_timespec *timespec, const char *prefix,
 847                 const char *suffix)
 848 {
 849         struct tm tm;
 850         u64 tmp_u64;
 851         u32 tmp_u32;
 852         time_t tmp_time;
 853         char timestamp[256];
 854
 855         tmp_u64 = btrfs_timespec_sec(eb, timespec);
 856         tmp_u32 = btrfs_timespec_nsec(eb, timespec);
 857         tmp_time = tmp_u64;
 858         localtime_r(&tmp_time, &tm);
 859         strftime(timestamp, sizeof(timestamp),
 860                         "%Y-%m-%d %H:%M:%S", &tm);
 861         printf("%s%llu.%u (%s)%s", prefix, (unsigned long long)tmp_u64, tmp_u32,
 862                         timestamp, suffix);
 863 }
 864
 865 static void print_inode_item(struct extent_buffer *eb,
 866                 struct btrfs_inode_item *ii)
 867 {
 868         char flags_str[256];
 869
 870         memset(flags_str, 0, sizeof(flags_str));
 871         inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
 872         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 873                "\t\tblock group %llu mode %o links %u uid %u gid %u rdev %llu\n"
 874                "\t\tsequence %llu flags 0x%llx(%s)\n",
 875                (unsigned long long)btrfs_inode_generation(eb, ii),
 876                (unsigned long long)btrfs_inode_transid(eb, ii),
 877                (unsigned long long)btrfs_inode_size(eb, ii),
 878                (unsigned long long)btrfs_inode_nbytes(eb, ii),
 879                (unsigned long long)btrfs_inode_block_group(eb,ii),
 880                btrfs_inode_mode(eb, ii),
 881                btrfs_inode_nlink(eb, ii),
 882                btrfs_inode_uid(eb, ii),
 883                btrfs_inode_gid(eb, ii),
 884                (unsigned long long)btrfs_inode_rdev(eb,ii),
 885                (unsigned long long)btrfs_inode_flags(eb,ii),
 886                (unsigned long long)btrfs_inode_sequence(eb, ii),
 887                flags_str);
 888         print_timespec(eb, btrfs_inode_atime(ii), "\t\tatime ", "\n");
 889         print_timespec(eb, btrfs_inode_ctime(ii), "\t\tctime ", "\n");
 890         print_timespec(eb, btrfs_inode_mtime(ii), "\t\tmtime ", "\n");
 891         print_timespec(eb, btrfs_inode_otime(ii), "\t\totime ", "\n");
 892 }
 893
 894 static void print_disk_balance_args(struct btrfs_disk_balance_args *ba)
 895 {
 896         printf("\t\tprofiles %llu devid %llu target %llu flags %llu\n",
 897                         (unsigned long long)le64_to_cpu(ba->profiles),
 898                         (unsigned long long)le64_to_cpu(ba->devid),
 899                         (unsigned long long)le64_to_cpu(ba->target),
 900                         (unsigned long long)le64_to_cpu(ba->flags));
 901         printf("\t\tusage_min %u usage_max %u pstart %llu pend %llu\n",
 902                         le32_to_cpu(ba->usage_min),
 903                         le32_to_cpu(ba->usage_max),
 904                         (unsigned long long)le64_to_cpu(ba->pstart),
 905                         (unsigned long long)le64_to_cpu(ba->pend));
 906         printf("\t\tvstart %llu vend %llu limit_min %u limit_max %u\n",
 907                         (unsigned long long)le64_to_cpu(ba->vstart),
 908                         (unsigned long long)le64_to_cpu(ba->vend),
 909                         le32_to_cpu(ba->limit_min),
 910                         le32_to_cpu(ba->limit_max));
 911         printf("\t\tstripes_min %u stripes_max %u\n",
 912                         le32_to_cpu(ba->stripes_min),
 913                         le32_to_cpu(ba->stripes_max));
 914 }
 915
 916 static void print_balance_item(struct extent_buffer *eb,
 917                 struct btrfs_balance_item *bi)
 918 {
 919         printf("\t\tbalance status flags %llu\n",
 920                         btrfs_balance_item_flags(eb, bi));
 921
 922         printf("\t\tDATA\n");
 923         print_disk_balance_args(btrfs_balance_item_data(eb, bi));
 924         printf("\t\tMETADATA\n");
 925         print_disk_balance_args(btrfs_balance_item_meta(eb, bi));
 926         printf("\t\tSYSTEM\n");
 927         print_disk_balance_args(btrfs_balance_item_sys(eb, bi));
 928 }
 929
 930 static void print_dev_stats(struct extent_buffer *eb,
 931                 struct btrfs_dev_stats_item *stats, u32 size)
 932 {
 933         int i;
 934         u32 known = BTRFS_DEV_STAT_VALUES_MAX * sizeof(__le64);
 935         __le64 *values = btrfs_dev_stats_values(eb, stats);
 936
 937         printf("\t\tdevice stats\n");
 938         printf("\t\twrite_errs %llu read_errs %llu flush_errs %llu corruption_errs %llu generation %llu\n",
 939                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_WRITE_ERRS]),
 940                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_READ_ERRS]),
 941                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_FLUSH_ERRS]),
 942                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_CORRUPTION_ERRS]),
 943                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_GENERATION_ERRS]));
 944
 945         if (known < size) {
 946                 printf("\t\tunknown stats item bytes %u", size - known);
 947                 for (i = BTRFS_DEV_STAT_VALUES_MAX; i * sizeof(__le64) < size; i++) {
 948                         printf("\t\tunknown item %u offset %lu value %llu\n",
 949                                 i, i * sizeof(__le64),
 950                                 (unsigned long long)le64_to_cpu(values[i]));
 951                 }
 952         }
 953 }
 954
 955 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *eb)
 956 {
 957         struct btrfs_item *item;
 958         struct btrfs_disk_key disk_key;
 959         u32 i;
 960         u32 nr;
 961
 962         nr = btrfs_header_nritems(eb);
 963
 964         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 965                 (unsigned long long)btrfs_header_bytenr(eb), nr,
 966                 btrfs_leaf_free_space(root, eb),
 967                 (unsigned long long)btrfs_header_generation(eb),
 968                 (unsigned long long)btrfs_header_owner(eb));
 969         print_uuids(eb);
 970         fflush(stdout);
 971
 972         for (i = 0; i < nr; i++) {
 973                 u32 item_size;
 974                 void *ptr;
 975                 u64 objectid;
 976                 u32 type;
 977                 u64 offset;
 978                 char flags_str[256];
 979                 char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 980                 u8 uuid[BTRFS_UUID_SIZE];
 981
 982                 item = btrfs_item_nr(i);
 983                 item_size = btrfs_item_size(eb, item);
 984                 /* Untyped extraction of slot from btrfs_item_ptr */
 985                 ptr = btrfs_item_ptr(eb, i, void*);
 986
 987                 btrfs_item_key(eb, &disk_key, i);
 988                 objectid = btrfs_disk_key_objectid(&disk_key);
 989                 type = btrfs_disk_key_type(&disk_key);
 990                 offset = btrfs_disk_key_offset(&disk_key);
 991
 992                 printf("\titem %d ", i);
 993                 btrfs_print_key(&disk_key);
 994                 printf(" itemoff %d itemsize %d\n",
 995                         btrfs_item_offset(eb, item),
 996                         btrfs_item_size(eb, item));
 997
 998                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
 999                         print_free_space_header(eb, i);
1000
1001                 switch (type) {
1002                 case BTRFS_INODE_ITEM_KEY:
1003                         print_inode_item(eb, ptr);
1004                         break;
1005                 case BTRFS_INODE_REF_KEY:
1006                         print_inode_ref_item(eb, item_size, ptr);
1007                         break;
1008                 case BTRFS_INODE_EXTREF_KEY:
1009                         print_inode_extref_item(eb, item_size, ptr);
1010                         break;
1011                 case BTRFS_DIR_ITEM_KEY:
1012                 case BTRFS_DIR_INDEX_KEY:
1013                 case BTRFS_XATTR_ITEM_KEY:
1014                         print_dir_item(eb, item_size, ptr);
1015                         break;
1016                 case BTRFS_DIR_LOG_INDEX_KEY:
1017                 case BTRFS_DIR_LOG_ITEM_KEY: {
1018                         struct btrfs_dir_log_item *dlog;
1019
1020                         dlog = btrfs_item_ptr(eb, i, struct btrfs_dir_log_item);
1021                         printf("\t\tdir log end %Lu\n",
1022                                (unsigned long long)btrfs_dir_log_end(eb, dlog));
1023                         break;
1024                         }
1025                 case BTRFS_ORPHAN_ITEM_KEY:
1026                         printf("\t\torphan item\n");
1027                         break;
1028                 case BTRFS_ROOT_ITEM_KEY:
1029                         print_root(eb, i);
1030                         break;
1031                 case BTRFS_ROOT_REF_KEY:
1032                         print_root_ref(eb, i, "ref");
1033                         break;
1034                 case BTRFS_ROOT_BACKREF_KEY:
1035                         print_root_ref(eb, i, "backref");
1036                         break;
1037                 case BTRFS_EXTENT_ITEM_KEY:
1038                         print_extent_item(eb, i, 0);
1039                         break;
1040                 case BTRFS_METADATA_ITEM_KEY:
1041                         print_extent_item(eb, i, 1);
1042                         break;
1043                 case BTRFS_TREE_BLOCK_REF_KEY:
1044                         printf("\t\ttree block backref\n");
1045                         break;
1046                 case BTRFS_SHARED_BLOCK_REF_KEY:
1047                         printf("\t\tshared block backref\n");
1048                         break;
1049                 case BTRFS_EXTENT_DATA_REF_KEY: {
1050                         struct btrfs_extent_data_ref *dref;
1051
1052                         dref = btrfs_item_ptr(eb, i, struct btrfs_extent_data_ref);
1053                         printf("\t\textent data backref root %llu "
1054                                "objectid %llu offset %llu count %u\n",
1055                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
1056                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
1057                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
1058                                btrfs_extent_data_ref_count(eb, dref));
1059                         break;
1060                         }
1061                 case BTRFS_SHARED_DATA_REF_KEY: {
1062                         struct btrfs_shared_data_ref *sref;
1063                         sref = btrfs_item_ptr(eb, i, struct btrfs_shared_data_ref);
1064                         printf("\t\tshared data backref count %u\n",
1065                                btrfs_shared_data_ref_count(eb, sref));
1066                         break;
1067                         }
1068                 case BTRFS_EXTENT_REF_V0_KEY:
1069 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
1070                         print_extent_ref_v0(eb, i);
1071 #else
1072                         BUG();
1073 #endif
1074                         break;
1075                 case BTRFS_CSUM_ITEM_KEY:
1076                         printf("\t\tcsum item\n");
1077                         break;
1078                 case BTRFS_EXTENT_CSUM_KEY:
1079                         printf("\t\textent csum item\n");
1080                         break;
1081                 case BTRFS_EXTENT_DATA_KEY:
1082                         print_file_extent_item(eb, item, i, ptr);
1083                         break;
1084                 case BTRFS_BLOCK_GROUP_ITEM_KEY: {
1085                         struct btrfs_block_group_item bg_item;
1086
1087                         read_extent_buffer(eb, &bg_item, (unsigned long)ptr,
1088                                            sizeof(bg_item));
1089                         memset(flags_str, 0, sizeof(flags_str));
1090                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
1091                                         flags_str);
1092                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
1093                                (unsigned long long)btrfs_block_group_used(&bg_item),
1094                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
1095                                flags_str);
1096                         break;
1097                         }
1098                 case BTRFS_FREE_SPACE_INFO_KEY: {
1099                         struct btrfs_free_space_info *free_info;
1100
1101                         free_info = btrfs_item_ptr(eb, i, struct btrfs_free_space_info);
1102                         printf("\t\tfree space info extent count %u flags %u\n",
1103                                (unsigned)btrfs_free_space_extent_count(eb, free_info),
1104                                (unsigned)btrfs_free_space_flags(eb, free_info));
1105                         break;
1106                         }
1107                 case BTRFS_FREE_SPACE_EXTENT_KEY:
1108                         printf("\t\tfree space extent\n");
1109                         break;
1110                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1111                         printf("\t\tfree space bitmap\n");
1112                         break;
1113                 case BTRFS_CHUNK_ITEM_KEY:
1114                         print_chunk(eb, ptr);
1115                         break;
1116                 case BTRFS_DEV_ITEM_KEY:
1117                         print_dev_item(eb, ptr);
1118                         break;
1119                 case BTRFS_DEV_EXTENT_KEY: {
1120                         struct btrfs_dev_extent *dev_extent;
1121
1122                         dev_extent = btrfs_item_ptr(eb, i,
1123                                                     struct btrfs_dev_extent);
1124                         read_extent_buffer(eb, uuid,
1125                                 (unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
1126                                 BTRFS_UUID_SIZE);
1127                         uuid_unparse(uuid, uuid_str);
1128                         printf("\t\tdev extent chunk_tree %llu\n"
1129                                "\t\tchunk_objectid %llu chunk_offset %llu "
1130                                "length %llu\n"
1131                                "\t\tchunk_tree_uuid %s\n",
1132                                (unsigned long long)
1133                                btrfs_dev_extent_chunk_tree(eb, dev_extent),
1134                                (unsigned long long)
1135                                btrfs_dev_extent_chunk_objectid(eb, dev_extent),
1136                                (unsigned long long)
1137                                btrfs_dev_extent_chunk_offset(eb, dev_extent),
1138                                (unsigned long long)
1139                                btrfs_dev_extent_length(eb, dev_extent),
1140                                uuid_str);
1141                         break;
1142                         }
1143                 case BTRFS_QGROUP_STATUS_KEY: {
1144                         struct btrfs_qgroup_status_item *qg_status;
1145
1146                         qg_status = btrfs_item_ptr(eb, i,
1147                                         struct btrfs_qgroup_status_item);
1148                         memset(flags_str, 0, sizeof(flags_str));
1149                         qgroup_flags_to_str(btrfs_qgroup_status_flags(eb, qg_status),
1150                                         flags_str);
1151                         printf("\t\tversion %llu generation %llu flags %s "
1152                                 "scan %lld\n",
1153                                 (unsigned long long)
1154                                 btrfs_qgroup_status_version(eb, qg_status),
1155                                 (unsigned long long)
1156                                 btrfs_qgroup_status_generation(eb, qg_status),
1157                                 flags_str,
1158                                 (unsigned long long)
1159                                 btrfs_qgroup_status_rescan(eb, qg_status));
1160                         break;
1161                         }
1162                 case BTRFS_QGROUP_RELATION_KEY:
1163                         break;
1164                 case BTRFS_QGROUP_INFO_KEY: {
1165                         struct btrfs_qgroup_info_item *qg_info;
1166
1167                         qg_info = btrfs_item_ptr(eb, i,
1168                                                  struct btrfs_qgroup_info_item);
1169                         printf("\t\tgeneration %llu\n"
1170                              "\t\treferenced %llu referenced_compressed %llu\n"
1171                              "\t\texclusive %llu exclusive_compressed %llu\n",
1172                                (unsigned long long)
1173                                btrfs_qgroup_info_generation(eb, qg_info),
1174                                (unsigned long long)
1175                                btrfs_qgroup_info_referenced(eb, qg_info),
1176                                (unsigned long long)
1177                                btrfs_qgroup_info_referenced_compressed(eb,
1178                                                                        qg_info),
1179                                (unsigned long long)
1180                                btrfs_qgroup_info_exclusive(eb, qg_info),
1181                                (unsigned long long)
1182                                btrfs_qgroup_info_exclusive_compressed(eb,
1183                                                                       qg_info));
1184                         break;
1185                         }
1186                 case BTRFS_QGROUP_LIMIT_KEY: {
1187                         struct btrfs_qgroup_limit_item *qg_limit;
1188
1189                         qg_limit = btrfs_item_ptr(eb, i,
1190                                          struct btrfs_qgroup_limit_item);
1191                         printf("\t\tflags %llx\n"
1192                              "\t\tmax_referenced %lld max_exclusive %lld\n"
1193                              "\t\trsv_referenced %lld rsv_exclusive %lld\n",
1194                                (unsigned long long)
1195                                btrfs_qgroup_limit_flags(eb, qg_limit),
1196                                (long long)
1197                                btrfs_qgroup_limit_max_referenced(eb, qg_limit),
1198                                (long long)
1199                                btrfs_qgroup_limit_max_exclusive(eb, qg_limit),
1200                                (long long)
1201                                btrfs_qgroup_limit_rsv_referenced(eb, qg_limit),
1202                                (long long)
1203                                btrfs_qgroup_limit_rsv_exclusive(eb, qg_limit));
1204                         break;
1205                         }
1206                 case BTRFS_UUID_KEY_SUBVOL:
1207                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1208                         print_uuid_item(eb, btrfs_item_ptr_offset(eb, i),
1209                                         btrfs_item_size_nr(eb, i));
1210                         break;
1211                 case BTRFS_STRING_ITEM_KEY: {
1212                         const char *str = eb->data + btrfs_item_ptr_offset(eb, i);
1213
1214                         printf("\t\titem data %.*s\n", item_size, str);
1215                         break;
1216                         }
1217                 case BTRFS_PERSISTENT_ITEM_KEY:
1218                         printf("\t\tpersistent item objectid ");
1219                         print_objectid(stdout, objectid, BTRFS_PERSISTENT_ITEM_KEY);
1220                         printf(" offset %llu\n", (unsigned long long)offset);
1221                         switch (objectid) {
1222                         case BTRFS_DEV_STATS_OBJECTID:
1223                                 print_dev_stats(eb, ptr, item_size);
1224                                 break;
1225                         default:
1226                                 printf("\t\tunknown persistent item objectid %llu\n",
1227                                                 objectid);
1228                         }
1229                         break;
1230                 case BTRFS_TEMPORARY_ITEM_KEY:
1231                         printf("\t\ttemporary item objectid ");
1232                         print_objectid(stdout, objectid, BTRFS_TEMPORARY_ITEM_KEY);
1233                         printf(" offset %llu\n", (unsigned long long)offset);
1234                         switch (objectid) {
1235                         case BTRFS_BALANCE_OBJECTID:
1236                                 print_balance_item(eb, ptr);
1237                                 break;
1238                         default:
1239                                 printf("\t\tunknown temporary item objectid %llu\n",
1240                                                 objectid);
1241                         }
1242                         break;
1243                 };
1244                 fflush(stdout);
1245         }
1246 }
1247
1248 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1249 {
1250         u32 i;
1251         u32 nr;
1252         u32 size;
1253         struct btrfs_disk_key disk_key;
1254         struct btrfs_key key;
1255         struct extent_buffer *next;
1256
1257         if (!eb)
1258                 return;
1259         nr = btrfs_header_nritems(eb);
1260         if (btrfs_is_leaf(eb)) {
1261                 btrfs_print_leaf(root, eb);
1262                 return;
1263         }
1264         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1265                (unsigned long long)eb->start,
1266                 btrfs_header_level(eb), nr,
1267                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1268                 (unsigned long long)btrfs_header_generation(eb),
1269                 (unsigned long long)btrfs_header_owner(eb));
1270         print_uuids(eb);
1271         fflush(stdout);
1272         size = root->nodesize;
1273         for (i = 0; i < nr; i++) {
1274                 u64 blocknr = btrfs_node_blockptr(eb, i);
1275                 btrfs_node_key(eb, &disk_key, i);
1276                 btrfs_disk_key_to_cpu(&key, &disk_key);
1277                 printf("\t");
1278                 btrfs_print_key(&disk_key);
1279                 printf(" block %llu (%llu) gen %llu\n",
1280                        (unsigned long long)blocknr,
1281                        (unsigned long long)blocknr / size,
1282                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1283                 fflush(stdout);
1284         }
1285         if (!follow)
1286                 return;
1287
1288         for (i = 0; i < nr; i++) {
1289                 next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
1290                                 btrfs_node_ptr_generation(eb, i));
1291                 if (!extent_buffer_uptodate(next)) {
1292                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1293                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1294                                 (unsigned long long)btrfs_header_owner(eb));
1295                         continue;
1296                 }
1297                 if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
1298                         warning(
1299         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1300                                 i, btrfs_header_level(next),
1301                                 btrfs_header_level(eb));
1302                         goto out;
1303                 }
1304                 if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
1305                         warning(
1306         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1307                                 i, btrfs_header_level(next),
1308                                 btrfs_header_level(eb));
1309                         goto out;
1310                 }
1311                 btrfs_print_tree(root, next, 1);
1312                 free_extent_buffer(next);
1313         }
1314
1315         return;
1316
1317 out:
1318         free_extent_buffer(next);
1319 }