print-tree.c

   1 /*
   2  * Copyright (C) 2007 Oracle.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License v2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public
  14  * License along with this program; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 021110-1307, USA.
  17  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <uuid/uuid.h>
  22 #include "kerncompat.h"
  23 #include "radix-tree.h"
  24 #include "ctree.h"
  25 #include "disk-io.h"
  26 #include "print-tree.h"
  27 #include "utils.h"
  28
  29
  30 static void print_dir_item_type(struct extent_buffer *eb,
  31                                 struct btrfs_dir_item *di)
  32 {
  33         u8 type = btrfs_dir_type(eb, di);
  34
  35         switch (type) {
  36         case BTRFS_FT_REG_FILE:
  37                 printf("FILE");
  38                 break;
  39         case BTRFS_FT_DIR:
  40                 printf("DIR");
  41                 break;
  42         case BTRFS_FT_CHRDEV:
  43                 printf("CHRDEV");
  44                 break;
  45         case BTRFS_FT_BLKDEV:
  46                 printf("BLKDEV");
  47                 break;
  48         case BTRFS_FT_FIFO:
  49                 printf("FIFO");
  50                 break;
  51         case BTRFS_FT_SOCK:
  52                 printf("SOCK");
  53                 break;
  54         case BTRFS_FT_SYMLINK:
  55                 printf("SYMLINK");
  56                 break;
  57         case BTRFS_FT_XATTR:
  58                 printf("XATTR");
  59                 break;
  60         default:
  61                 printf("%u", type);
  62         }
  63 }
  64
  65 static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item,
  66                           struct btrfs_dir_item *di)
  67 {
  68         u32 total;
  69         u32 cur = 0;
  70         u32 len;
  71         u32 name_len;
  72         u32 data_len;
  73         char namebuf[BTRFS_NAME_LEN];
  74         struct btrfs_disk_key location;
  75
  76         total = btrfs_item_size(eb, item);
  77         while(cur < total) {
  78                 btrfs_dir_item_key(eb, di, &location);
  79                 printf("\t\tlocation ");
  80                 btrfs_print_key(&location);
  81                 printf(" type ");
  82                 print_dir_item_type(eb, di);
  83                 printf("\n");
  84                 name_len = btrfs_dir_name_len(eb, di);
  85                 data_len = btrfs_dir_data_len(eb, di);
  86                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
  87                 read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len);
  88                 printf("\t\ttransid %llu data_len %u name_len %u\n",
  89                                 btrfs_dir_transid(eb, di),
  90                                 data_len, name_len);
  91                 printf("\t\tname: %.*s\n", len, namebuf);
  92                 if (data_len) {
  93                         len = (data_len <= sizeof(namebuf))? data_len: sizeof(namebuf);
  94                         read_extent_buffer(eb, namebuf,
  95                                 (unsigned long)(di + 1) + name_len, len);
  96                         printf("\t\tdata %.*s\n", len, namebuf);
  97                 }
  98                 len = sizeof(*di) + name_len + data_len;
  99                 di = (struct btrfs_dir_item *)((char *)di + len);
 100                 cur += len;
 101         }
 102         return 0;
 103 }
 104
 105 static int print_inode_extref_item(struct extent_buffer *eb,
 106                                    struct btrfs_item *item,
 107                                    struct btrfs_inode_extref *extref)
 108 {
 109         u32 total;
 110         u32 cur = 0;
 111         u32 len;
 112         u32 name_len = 0;
 113         u64 index = 0;
 114         u64 parent_objid;
 115         char namebuf[BTRFS_NAME_LEN];
 116
 117         total = btrfs_item_size(eb, item);
 118
 119         while (cur < total) {
 120                 index = btrfs_inode_extref_index(eb, extref);
 121                 name_len = btrfs_inode_extref_name_len(eb, extref);
 122                 parent_objid = btrfs_inode_extref_parent(eb, extref);
 123
 124                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 125
 126                 read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len);
 127
 128                 printf("\t\tinode extref index %llu parent %llu namelen %u "
 129                        "name: %.*s\n",
 130                        (unsigned long long)index,
 131                        (unsigned long long)parent_objid,
 132                        name_len, len, namebuf);
 133
 134                 len = sizeof(*extref) + name_len;
 135                 extref = (struct btrfs_inode_extref *)((char *)extref + len);
 136                 cur += len;
 137         }
 138         return 0;
 139 }
 140
 141 static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item,
 142                                 struct btrfs_inode_ref *ref)
 143 {
 144         u32 total;
 145         u32 cur = 0;
 146         u32 len;
 147         u32 name_len;
 148         u64 index;
 149         char namebuf[BTRFS_NAME_LEN];
 150         total = btrfs_item_size(eb, item);
 151         while(cur < total) {
 152                 name_len = btrfs_inode_ref_name_len(eb, ref);
 153                 index = btrfs_inode_ref_index(eb, ref);
 154                 len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf);
 155                 read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len);
 156                 printf("\t\tinode ref index %llu namelen %u name: %.*s\n",
 157                        (unsigned long long)index, name_len, len, namebuf);
 158                 len = sizeof(*ref) + name_len;
 159                 ref = (struct btrfs_inode_ref *)((char *)ref + len);
 160                 cur += len;
 161         }
 162         return 0;
 163 }
 164
 165 /* Caller should ensure sizeof(*ret)>=21 "DATA|METADATA|RAID10" */
 166 static void bg_flags_to_str(u64 flags, char *ret)
 167 {
 168         int empty = 1;
 169
 170         if (flags & BTRFS_BLOCK_GROUP_DATA) {
 171                 empty = 0;
 172                 strcpy(ret, "DATA");
 173         }
 174         if (flags & BTRFS_BLOCK_GROUP_METADATA) {
 175                 if (!empty)
 176                         strcat(ret, "|");
 177                 strcat(ret, "METADATA");
 178         }
 179         if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
 180                 if (!empty)
 181                         strcat(ret, "|");
 182                 strcat(ret, "SYSTEM");
 183         }
 184         switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
 185         case BTRFS_BLOCK_GROUP_RAID0:
 186                 strcat(ret, "|RAID0");
 187                 break;
 188         case BTRFS_BLOCK_GROUP_RAID1:
 189                 strcat(ret, "|RAID1");
 190                 break;
 191         case BTRFS_BLOCK_GROUP_DUP:
 192                 strcat(ret, "|DUP");
 193                 break;
 194         case BTRFS_BLOCK_GROUP_RAID10:
 195                 strcat(ret, "|RAID10");
 196                 break;
 197         case BTRFS_BLOCK_GROUP_RAID5:
 198                 strcat(ret, "|RAID5");
 199                 break;
 200         case BTRFS_BLOCK_GROUP_RAID6:
 201                 strcat(ret, "|RAID6");
 202                 break;
 203         default:
 204                 break;
 205         }
 206 }
 207
 208 /* Caller should ensure sizeof(*ret)>= 26 "OFF|SCANNING|INCONSISTENT" */
 209 static void qgroup_flags_to_str(u64 flags, char *ret)
 210 {
 211         if (flags & BTRFS_QGROUP_STATUS_FLAG_ON)
 212                 strcpy(ret, "ON");
 213         else
 214                 strcpy(ret, "OFF");
 215
 216         if (flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN)
 217                 strcat(ret, "|SCANNING");
 218         if (flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT)
 219                 strcat(ret, "|INCONSISTENT");
 220 }
 221
 222 void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
 223 {
 224         int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
 225         int i;
 226         char chunk_flags_str[32] = {0};
 227
 228         bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str);
 229         printf("\t\tlength %llu owner %llu stripe_len %llu type %s\n",
 230                (unsigned long long)btrfs_chunk_length(eb, chunk),
 231                (unsigned long long)btrfs_chunk_owner(eb, chunk),
 232                (unsigned long long)btrfs_chunk_stripe_len(eb, chunk),
 233                 chunk_flags_str);
 234         printf("\t\tio_align %u io_width %u sector_size %u\n",
 235                         btrfs_chunk_io_align(eb, chunk),
 236                         btrfs_chunk_io_width(eb, chunk),
 237                         btrfs_chunk_sector_size(eb, chunk));
 238         printf("\t\tnum_stripes %hu sub_stripes %hu\n", num_stripes,
 239                         btrfs_chunk_sub_stripes(eb, chunk));
 240         for (i = 0 ; i < num_stripes ; i++) {
 241                 unsigned char dev_uuid[BTRFS_UUID_SIZE];
 242                 char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE];
 243
 244                 read_extent_buffer(eb, dev_uuid,
 245                         (unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i),
 246                         BTRFS_UUID_SIZE);
 247                 uuid_unparse(dev_uuid, str_dev_uuid);
 248                 printf("\t\t\tstripe %d devid %llu offset %llu\n", i,
 249                       (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i),
 250                       (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i));
 251                 printf("\t\t\tdev uuid: %s\n", str_dev_uuid);
 252         }
 253 }
 254
 255 static void print_dev_item(struct extent_buffer *eb,
 256                            struct btrfs_dev_item *dev_item)
 257 {
 258         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 259         char fsid_str[BTRFS_UUID_UNPARSED_SIZE];
 260         u8 uuid[BTRFS_UUID_SIZE];
 261         u8 fsid[BTRFS_UUID_SIZE];
 262
 263         read_extent_buffer(eb, uuid,
 264                            (unsigned long)btrfs_device_uuid(dev_item),
 265                            BTRFS_UUID_SIZE);
 266         uuid_unparse(uuid, uuid_str);
 267         read_extent_buffer(eb, fsid,
 268                            (unsigned long)btrfs_device_fsid(dev_item),
 269                            BTRFS_UUID_SIZE);
 270         uuid_unparse(fsid, fsid_str);
 271         printf("\t\tdevid %llu total_bytes %llu bytes_used %Lu\n"
 272                "\t\tio_align %u io_width %u sector_size %u type %llu\n"
 273                "\t\tgeneration %llu start_offset %llu dev_group %u\n"
 274                "\t\tseek_speed %hhu bandwidth %hhu\n"
 275                "\t\tdev uuid %s\n"
 276                "\t\tfsid %s\n",
 277                (unsigned long long)btrfs_device_id(eb, dev_item),
 278                (unsigned long long)btrfs_device_total_bytes(eb, dev_item),
 279                (unsigned long long)btrfs_device_bytes_used(eb, dev_item),
 280                btrfs_device_io_align(eb, dev_item),
 281                btrfs_device_io_width(eb, dev_item),
 282                btrfs_device_sector_size(eb, dev_item),
 283                (unsigned long long)btrfs_device_type(eb, dev_item),
 284                (unsigned long long)btrfs_device_generation(eb, dev_item),
 285                (unsigned long long)btrfs_device_start_offset(eb, dev_item),
 286                btrfs_device_group(eb, dev_item),
 287                btrfs_device_seek_speed(eb, dev_item),
 288                btrfs_device_bandwidth(eb, dev_item),
 289                uuid_str, fsid_str);
 290 }
 291
 292 static void print_uuids(struct extent_buffer *eb)
 293 {
 294         char fs_uuid[BTRFS_UUID_UNPARSED_SIZE];
 295         char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE];
 296         u8 disk_uuid[BTRFS_UUID_SIZE];
 297
 298         read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(),
 299                            BTRFS_FSID_SIZE);
 300
 301         fs_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 302         uuid_unparse(disk_uuid, fs_uuid);
 303
 304         read_extent_buffer(eb, disk_uuid,
 305                            btrfs_header_chunk_tree_uuid(eb),
 306                            BTRFS_UUID_SIZE);
 307
 308         chunk_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0';
 309         uuid_unparse(disk_uuid, chunk_uuid);
 310         printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid);
 311 }
 312
 313 static void compress_type_to_str(u8 compress_type, char *ret)
 314 {
 315         switch (compress_type) {
 316         case BTRFS_COMPRESS_NONE:
 317                 strcpy(ret, "none");
 318                 break;
 319         case BTRFS_COMPRESS_ZLIB:
 320                 strcpy(ret, "zlib");
 321                 break;
 322         case BTRFS_COMPRESS_LZO:
 323                 strcpy(ret, "lzo");
 324                 break;
 325         default:
 326                 sprintf(ret, "UNKNOWN.%d", compress_type);
 327         }
 328 }
 329
 330 static void print_file_extent_item(struct extent_buffer *eb,
 331                                    struct btrfs_item *item,
 332                                    int slot,
 333                                    struct btrfs_file_extent_item *fi)
 334 {
 335         int extent_type = btrfs_file_extent_type(eb, fi);
 336         char compress_str[16];
 337
 338         compress_type_to_str(btrfs_file_extent_compression(eb, fi),
 339                              compress_str);
 340
 341         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 342                 printf("\t\tinline extent data size %u "
 343                        "ram %u compress(%s)\n",
 344                   btrfs_file_extent_inline_item_len(eb, item),
 345                   btrfs_file_extent_inline_len(eb, slot, fi),
 346                   compress_str);
 347                 return;
 348         }
 349         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 350                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 351                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 352                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 353                 printf("\t\tprealloc data offset %llu nr %llu\n",
 354                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 355                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 356                 return;
 357         }
 358         printf("\t\textent data disk byte %llu nr %llu\n",
 359                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 360                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 361         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 362                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 363                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 364                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 365         printf("\t\textent compression(%s)\n", compress_str);
 366 }
 367
 368 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 369 static void extent_flags_to_str(u64 flags, char *ret)
 370 {
 371         int empty = 1;
 372
 373         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 374                 empty = 0;
 375                 strcpy(ret, "DATA");
 376         }
 377         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 378                 if (!empty) {
 379                         empty = 0;
 380                         strcat(ret, "|");
 381                 }
 382                 strcat(ret, "TREE_BLOCK");
 383         }
 384         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 385                 strcat(ret, "|");
 386                 strcat(ret, "FULL_BACKREF");
 387         }
 388 }
 389
 390 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 391 {
 392         struct btrfs_extent_item *ei;
 393         struct btrfs_extent_inline_ref *iref;
 394         struct btrfs_extent_data_ref *dref;
 395         struct btrfs_shared_data_ref *sref;
 396         struct btrfs_disk_key key;
 397         unsigned long end;
 398         unsigned long ptr;
 399         int type;
 400         u32 item_size = btrfs_item_size_nr(eb, slot);
 401         u64 flags;
 402         u64 offset;
 403         char flags_str[32] = {0};
 404
 405         if (item_size < sizeof(*ei)) {
 406 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 407                 struct btrfs_extent_item_v0 *ei0;
 408                 BUG_ON(item_size != sizeof(*ei0));
 409                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 410                 printf("\t\textent refs %u\n",
 411                        btrfs_extent_refs_v0(eb, ei0));
 412                 return;
 413 #else
 414                 BUG();
 415 #endif
 416         }
 417
 418         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 419         flags = btrfs_extent_flags(eb, ei);
 420         extent_flags_to_str(flags, flags_str);
 421
 422         printf("\t\textent refs %llu gen %llu flags %s\n",
 423                (unsigned long long)btrfs_extent_refs(eb, ei),
 424                (unsigned long long)btrfs_extent_generation(eb, ei),
 425                flags_str);
 426
 427         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 428                 struct btrfs_tree_block_info *info;
 429                 info = (struct btrfs_tree_block_info *)(ei + 1);
 430                 btrfs_tree_block_key(eb, info, &key);
 431                 printf("\t\ttree block ");
 432                 btrfs_print_key(&key);
 433                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 434                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 435         } else if (metadata) {
 436                 struct btrfs_key tmp;
 437
 438                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 439                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 440                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 441         } else{
 442                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 443         }
 444
 445         ptr = (unsigned long)iref;
 446         end = (unsigned long)ei + item_size;
 447         while (ptr < end) {
 448                 iref = (struct btrfs_extent_inline_ref *)ptr;
 449                 type = btrfs_extent_inline_ref_type(eb, iref);
 450                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 451                 switch (type) {
 452                 case BTRFS_TREE_BLOCK_REF_KEY:
 453                         printf("\t\ttree block backref root %llu\n",
 454                                (unsigned long long)offset);
 455                         break;
 456                 case BTRFS_SHARED_BLOCK_REF_KEY:
 457                         printf("\t\tshared block backref parent %llu\n",
 458                                (unsigned long long)offset);
 459                         break;
 460                 case BTRFS_EXTENT_DATA_REF_KEY:
 461                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 462                         printf("\t\textent data backref root %llu "
 463                                "objectid %llu offset %llu count %u\n",
 464                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 465                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 466                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 467                                btrfs_extent_data_ref_count(eb, dref));
 468                         break;
 469                 case BTRFS_SHARED_DATA_REF_KEY:
 470                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 471                         printf("\t\tshared data backref parent %llu count %u\n",
 472                                (unsigned long long)offset,
 473                                btrfs_shared_data_ref_count(eb, sref));
 474                         break;
 475                 default:
 476                         return;
 477                 }
 478                 ptr += btrfs_extent_inline_ref_size(type);
 479         }
 480         WARN_ON(ptr > end);
 481 }
 482
 483 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 484 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 485 {
 486         struct btrfs_extent_ref_v0 *ref0;
 487
 488         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 489         printf("\t\textent back ref root %llu gen %llu "
 490                 "owner %llu num_refs %lu\n",
 491                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 492                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 493                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 494                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 495 }
 496 #endif
 497
 498 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 499 {
 500         struct btrfs_root_ref *ref;
 501         char namebuf[BTRFS_NAME_LEN];
 502         int namelen;
 503
 504         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 505         namelen = btrfs_root_ref_name_len(leaf, ref);
 506         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 507         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 508                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 509                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 510                namelen, namebuf);
 511 }
 512
 513 static int count_bytes(void *buf, int len, char b)
 514 {
 515         int cnt = 0;
 516         int i;
 517         for (i = 0; i < len; i++) {
 518                 if (((char*)buf)[i] == b)
 519                         cnt++;
 520         }
 521         return cnt;
 522 }
 523
 524 /*
 525  * Caller must ensure sizeof(*ret) >= 7 "RDONLY"
 526  */
 527 static void root_flags_to_str(u64 flags, char *ret)
 528 {
 529         if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
 530                 strcat(ret, "RDONLY");
 531         else
 532                 strcat(ret, "none");
 533 }
 534
 535 static void print_root(struct extent_buffer *leaf, int slot)
 536 {
 537         struct btrfs_root_item *ri;
 538         struct btrfs_root_item root_item;
 539         int len;
 540         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 541         char flags_str[32] = {0};
 542         struct btrfs_key drop_key;
 543
 544         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 545         len = btrfs_item_size_nr(leaf, slot);
 546
 547         memset(&root_item, 0, sizeof(root_item));
 548         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 549         root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
 550
 551         printf("\t\tgeneration %llu root_dirid %llu bytenr %llu level %hhu refs %u\n",
 552                 (unsigned long long)btrfs_root_generation(&root_item),
 553                 (unsigned long long)btrfs_root_dirid(&root_item),
 554                 (unsigned long long)btrfs_root_bytenr(&root_item),
 555                 btrfs_root_level(&root_item),
 556                 btrfs_root_refs(&root_item));
 557         printf("\t\tlastsnap %llu byte_limit %llu bytes_used %llu flags 0x%llx(%s)\n",
 558                 (unsigned long long)btrfs_root_last_snapshot(&root_item),
 559                 (unsigned long long)btrfs_root_limit(&root_item),
 560                 (unsigned long long)btrfs_root_used(&root_item),
 561                 (unsigned long long)btrfs_root_flags(&root_item),
 562                 flags_str);
 563
 564         if (root_item.generation == root_item.generation_v2) {
 565                 uuid_unparse(root_item.uuid, uuid_str);
 566                 printf("\t\tuuid %s\n", uuid_str);
 567                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 568                         uuid_unparse(root_item.parent_uuid, uuid_str);
 569                         printf("\t\tparent_uuid %s\n", uuid_str);
 570                 }
 571                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 572                         uuid_unparse(root_item.received_uuid, uuid_str);
 573                         printf("\t\treceived_uuid %s\n", uuid_str);
 574                 }
 575                 if (root_item.ctransid) {
 576                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 577                                 btrfs_root_ctransid(&root_item),
 578                                 btrfs_root_otransid(&root_item),
 579                                 btrfs_root_stransid(&root_item),
 580                                 btrfs_root_rtransid(&root_item));
 581                 }
 582         }
 583
 584         btrfs_disk_key_to_cpu(&drop_key, &root_item.drop_progress);
 585         printf("\t\tdrop ");
 586         btrfs_print_key(&root_item.drop_progress);
 587         printf(" level %hhu\n", root_item.drop_level);
 588 }
 589
 590 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 591 {
 592         struct btrfs_free_space_header *header;
 593         struct btrfs_disk_key location;
 594
 595         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 596         btrfs_free_space_key(leaf, header, &location);
 597         printf("\t\tlocation ");
 598         btrfs_print_key(&location);
 599         printf("\n");
 600         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 601                (unsigned long long)btrfs_free_space_generation(leaf, header),
 602                (unsigned long long)btrfs_free_space_entries(leaf, header),
 603                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 604 }
 605
 606 void print_key_type(FILE *stream, u64 objectid, u8 type)
 607 {
 608         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 609                 fprintf(stream, "UNTYPED");
 610                 return;
 611         }
 612
 613         switch (type) {
 614         case BTRFS_INODE_ITEM_KEY:
 615                 fprintf(stream, "INODE_ITEM");
 616                 break;
 617         case BTRFS_INODE_REF_KEY:
 618                 fprintf(stream, "INODE_REF");
 619                 break;
 620         case BTRFS_INODE_EXTREF_KEY:
 621                 fprintf(stream, "INODE_EXTREF");
 622                 break;
 623         case BTRFS_DIR_ITEM_KEY:
 624                 fprintf(stream, "DIR_ITEM");
 625                 break;
 626         case BTRFS_DIR_INDEX_KEY:
 627                 fprintf(stream, "DIR_INDEX");
 628                 break;
 629         case BTRFS_DIR_LOG_ITEM_KEY:
 630                 fprintf(stream, "DIR_LOG_ITEM");
 631                 break;
 632         case BTRFS_DIR_LOG_INDEX_KEY:
 633                 fprintf(stream, "DIR_LOG_INDEX");
 634                 break;
 635         case BTRFS_XATTR_ITEM_KEY:
 636                 fprintf(stream, "XATTR_ITEM");
 637                 break;
 638         case BTRFS_ORPHAN_ITEM_KEY:
 639                 fprintf(stream, "ORPHAN_ITEM");
 640                 break;
 641         case BTRFS_ROOT_ITEM_KEY:
 642                 fprintf(stream, "ROOT_ITEM");
 643                 break;
 644         case BTRFS_ROOT_REF_KEY:
 645                 fprintf(stream, "ROOT_REF");
 646                 break;
 647         case BTRFS_ROOT_BACKREF_KEY:
 648                 fprintf(stream, "ROOT_BACKREF");
 649                 break;
 650         case BTRFS_EXTENT_ITEM_KEY:
 651                 fprintf(stream, "EXTENT_ITEM");
 652                 break;
 653         case BTRFS_METADATA_ITEM_KEY:
 654                 fprintf(stream, "METADATA_ITEM");
 655                 break;
 656         case BTRFS_TREE_BLOCK_REF_KEY:
 657                 fprintf(stream, "TREE_BLOCK_REF");
 658                 break;
 659         case BTRFS_SHARED_BLOCK_REF_KEY:
 660                 fprintf(stream, "SHARED_BLOCK_REF");
 661                 break;
 662         case BTRFS_EXTENT_DATA_REF_KEY:
 663                 fprintf(stream, "EXTENT_DATA_REF");
 664                 break;
 665         case BTRFS_SHARED_DATA_REF_KEY:
 666                 fprintf(stream, "SHARED_DATA_REF");
 667                 break;
 668         case BTRFS_EXTENT_REF_V0_KEY:
 669                 fprintf(stream, "EXTENT_REF_V0");
 670                 break;
 671         case BTRFS_CSUM_ITEM_KEY:
 672                 fprintf(stream, "CSUM_ITEM");
 673                 break;
 674         case BTRFS_EXTENT_CSUM_KEY:
 675                 fprintf(stream, "EXTENT_CSUM");
 676                 break;
 677         case BTRFS_EXTENT_DATA_KEY:
 678                 fprintf(stream, "EXTENT_DATA");
 679                 break;
 680         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 681                 fprintf(stream, "BLOCK_GROUP_ITEM");
 682                 break;
 683         case BTRFS_FREE_SPACE_INFO_KEY:
 684                 fprintf(stream, "FREE_SPACE_INFO");
 685                 break;
 686         case BTRFS_FREE_SPACE_EXTENT_KEY:
 687                 fprintf(stream, "FREE_SPACE_EXTENT");
 688                 break;
 689         case BTRFS_FREE_SPACE_BITMAP_KEY:
 690                 fprintf(stream, "FREE_SPACE_BITMAP");
 691                 break;
 692         case BTRFS_CHUNK_ITEM_KEY:
 693                 fprintf(stream, "CHUNK_ITEM");
 694                 break;
 695         case BTRFS_DEV_ITEM_KEY:
 696                 fprintf(stream, "DEV_ITEM");
 697                 break;
 698         case BTRFS_DEV_EXTENT_KEY:
 699                 fprintf(stream, "DEV_EXTENT");
 700                 break;
 701         case BTRFS_BALANCE_ITEM_KEY:
 702                 fprintf(stream, "BALANCE_ITEM");
 703                 break;
 704         case BTRFS_DEV_REPLACE_KEY:
 705                 fprintf(stream, "DEV_REPLACE");
 706                 break;
 707         case BTRFS_STRING_ITEM_KEY:
 708                 fprintf(stream, "STRING_ITEM");
 709                 break;
 710         case BTRFS_QGROUP_STATUS_KEY:
 711                 fprintf(stream, "QGROUP_STATUS");
 712                 break;
 713         case BTRFS_QGROUP_RELATION_KEY:
 714                 fprintf(stream, "QGROUP_RELATION");
 715                 break;
 716         case BTRFS_QGROUP_INFO_KEY:
 717                 fprintf(stream, "QGROUP_INFO");
 718                 break;
 719         case BTRFS_QGROUP_LIMIT_KEY:
 720                 fprintf(stream, "QGROUP_LIMIT");
 721                 break;
 722         case BTRFS_DEV_STATS_KEY:
 723                 fprintf(stream, "DEV_STATS");
 724                 break;
 725         case BTRFS_UUID_KEY_SUBVOL:
 726                 fprintf(stream, "UUID_KEY_SUBVOL");
 727                 break;
 728         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 729                 fprintf(stream, "UUID_KEY_RECEIVED_SUBVOL");
 730                 break;
 731         default:
 732                 fprintf(stream, "UNKNOWN.%d", type);
 733         };
 734 }
 735
 736 void print_objectid(FILE *stream, u64 objectid, u8 type)
 737 {
 738         switch (type) {
 739         case BTRFS_DEV_EXTENT_KEY:
 740                 /* device id */
 741                 fprintf(stream, "%llu", (unsigned long long)objectid);
 742                 return;
 743         case BTRFS_QGROUP_RELATION_KEY:
 744                 fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
 745                        btrfs_qgroup_subvid(objectid));
 746                 return;
 747         case BTRFS_UUID_KEY_SUBVOL:
 748         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 749                 fprintf(stream, "0x%016llx", (unsigned long long)objectid);
 750                 return;
 751         }
 752
 753         switch (objectid) {
 754         case BTRFS_ROOT_TREE_OBJECTID:
 755                 if (type == BTRFS_DEV_ITEM_KEY)
 756                         fprintf(stream, "DEV_ITEMS");
 757                 else
 758                         fprintf(stream, "ROOT_TREE");
 759                 break;
 760         case BTRFS_EXTENT_TREE_OBJECTID:
 761                 fprintf(stream, "EXTENT_TREE");
 762                 break;
 763         case BTRFS_CHUNK_TREE_OBJECTID:
 764                 fprintf(stream, "CHUNK_TREE");
 765                 break;
 766         case BTRFS_DEV_TREE_OBJECTID:
 767                 fprintf(stream, "DEV_TREE");
 768                 break;
 769         case BTRFS_FS_TREE_OBJECTID:
 770                 fprintf(stream, "FS_TREE");
 771                 break;
 772         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 773                 fprintf(stream, "ROOT_TREE_DIR");
 774                 break;
 775         case BTRFS_CSUM_TREE_OBJECTID:
 776                 fprintf(stream, "CSUM_TREE");
 777                 break;
 778         case BTRFS_BALANCE_OBJECTID:
 779                 fprintf(stream, "BALANCE");
 780                 break;
 781         case BTRFS_ORPHAN_OBJECTID:
 782                 fprintf(stream, "ORPHAN");
 783                 break;
 784         case BTRFS_TREE_LOG_OBJECTID:
 785                 fprintf(stream, "TREE_LOG");
 786                 break;
 787         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 788                 fprintf(stream, "LOG_FIXUP");
 789                 break;
 790         case BTRFS_TREE_RELOC_OBJECTID:
 791                 fprintf(stream, "TREE_RELOC");
 792                 break;
 793         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 794                 fprintf(stream, "DATA_RELOC_TREE");
 795                 break;
 796         case BTRFS_EXTENT_CSUM_OBJECTID:
 797                 fprintf(stream, "EXTENT_CSUM");
 798                 break;
 799         case BTRFS_FREE_SPACE_OBJECTID:
 800                 fprintf(stream, "FREE_SPACE");
 801                 break;
 802         case BTRFS_FREE_INO_OBJECTID:
 803                 fprintf(stream, "FREE_INO");
 804                 break;
 805         case BTRFS_QUOTA_TREE_OBJECTID:
 806                 fprintf(stream, "QUOTA_TREE");
 807                 break;
 808         case BTRFS_UUID_TREE_OBJECTID:
 809                 fprintf(stream, "UUID_TREE");
 810                 break;
 811         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 812                 fprintf(stream, "FREE_SPACE_TREE");
 813                 break;
 814         case BTRFS_MULTIPLE_OBJECTIDS:
 815                 fprintf(stream, "MULTIPLE");
 816                 break;
 817         case (u64)-1:
 818                 fprintf(stream, "-1");
 819                 break;
 820         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 821                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 822                         fprintf(stream, "FIRST_CHUNK_TREE");
 823                         break;
 824                 }
 825                 /* fall-thru */
 826         default:
 827                 fprintf(stream, "%llu", (unsigned long long)objectid);
 828         }
 829 }
 830
 831 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 832 {
 833         u64 objectid = btrfs_disk_key_objectid(disk_key);
 834         u8 type = btrfs_disk_key_type(disk_key);
 835         u64 offset = btrfs_disk_key_offset(disk_key);
 836
 837         printf("key (");
 838         print_objectid(stdout, objectid, type);
 839         printf(" ");
 840         print_key_type(stdout, objectid, type);
 841         switch (type) {
 842         case BTRFS_QGROUP_RELATION_KEY:
 843         case BTRFS_QGROUP_INFO_KEY:
 844         case BTRFS_QGROUP_LIMIT_KEY:
 845                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 846                        btrfs_qgroup_subvid(offset));
 847                 break;
 848         case BTRFS_UUID_KEY_SUBVOL:
 849         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 850                 printf(" 0x%016llx)", (unsigned long long)offset);
 851                 break;
 852         default:
 853                 if (offset == (u64)-1)
 854                         printf(" -1)");
 855                 else
 856                         printf(" %llu)", (unsigned long long)offset);
 857                 break;
 858         }
 859 }
 860
 861 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 862                             u32 item_size)
 863 {
 864         if (item_size & (sizeof(u64) - 1)) {
 865                 printf("btrfs: uuid item with illegal size %lu!\n",
 866                        (unsigned long)item_size);
 867                 return;
 868         }
 869         while (item_size) {
 870                 __le64 subvol_id;
 871
 872                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 873                 printf("\t\tsubvol_id %llu\n",
 874                         (unsigned long long)le64_to_cpu(subvol_id));
 875                 item_size -= sizeof(u64);
 876                 offset += sizeof(u64);
 877         }
 878 }
 879
 880 /* Btrfs inode flag stringification helper */
 881 #define STRCAT_ONE_INODE_FLAG(flags, name, empty, dst) ({                       \
 882         if (flags & BTRFS_INODE_##name) {                               \
 883                 if (!empty)                                             \
 884                         strcat(dst, "|");                               \
 885                 strcat(dst, #name);                                     \
 886                 empty = 0;                                              \
 887         }                                                               \
 888 })
 889
 890 /*
 891  * Caller should ensure sizeof(*ret) >= 102: all charactors plus '|' of
 892  * BTRFS_INODE_* flags
 893  */
 894 static void inode_flags_to_str(u64 flags, char *ret)
 895 {
 896         int empty = 1;
 897
 898         STRCAT_ONE_INODE_FLAG(flags, NODATASUM, empty, ret);
 899         STRCAT_ONE_INODE_FLAG(flags, NODATACOW, empty, ret);
 900         STRCAT_ONE_INODE_FLAG(flags, READONLY, empty, ret);
 901         STRCAT_ONE_INODE_FLAG(flags, NOCOMPRESS, empty, ret);
 902         STRCAT_ONE_INODE_FLAG(flags, PREALLOC, empty, ret);
 903         STRCAT_ONE_INODE_FLAG(flags, SYNC, empty, ret);
 904         STRCAT_ONE_INODE_FLAG(flags, IMMUTABLE, empty, ret);
 905         STRCAT_ONE_INODE_FLAG(flags, APPEND, empty, ret);
 906         STRCAT_ONE_INODE_FLAG(flags, NODUMP, empty, ret);
 907         STRCAT_ONE_INODE_FLAG(flags, NOATIME, empty, ret);
 908         STRCAT_ONE_INODE_FLAG(flags, DIRSYNC, empty, ret);
 909         STRCAT_ONE_INODE_FLAG(flags, COMPRESS, empty, ret);
 910         if (empty)
 911                 strcat(ret, "none");
 912 }
 913
 914 static void print_timespec(struct extent_buffer *eb,
 915                 struct btrfs_timespec *timespec, const char *prefix,
 916                 const char *suffix)
 917 {
 918         struct tm tm;
 919         u64 tmp_u64;
 920         u32 tmp_u32;
 921         time_t tmp_time;
 922         char timestamp[256];
 923
 924         tmp_u64 = btrfs_timespec_sec(eb, timespec);
 925         tmp_u32 = btrfs_timespec_nsec(eb, timespec);
 926         tmp_time = tmp_u64;
 927         localtime_r(&tmp_time, &tm);
 928         strftime(timestamp, sizeof(timestamp),
 929                         "%Y-%m-%d %H:%M:%S", &tm);
 930         printf("%s%llu.%u (%s)%s", prefix, (unsigned long long)tmp_u64, tmp_u32,
 931                         timestamp, suffix);
 932 }
 933
 934 static void print_inode_item(struct extent_buffer *eb, struct btrfs_item *item,
 935                                 struct btrfs_inode_item *ii)
 936 {
 937         char flags_str[256];
 938
 939         memset(flags_str, 0, sizeof(flags_str));
 940         inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
 941         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 942                "\t\tblock group %llu mode %o links %u uid %u gid %u rdev %llu\n"
 943                "\t\tsequence %llu flags 0x%llx(%s)\n",
 944                (unsigned long long)btrfs_inode_generation(eb, ii),
 945                (unsigned long long)btrfs_inode_transid(eb, ii),
 946                (unsigned long long)btrfs_inode_size(eb, ii),
 947                (unsigned long long)btrfs_inode_nbytes(eb, ii),
 948                (unsigned long long)btrfs_inode_block_group(eb,ii),
 949                btrfs_inode_mode(eb, ii),
 950                btrfs_inode_nlink(eb, ii),
 951                btrfs_inode_uid(eb, ii),
 952                btrfs_inode_gid(eb, ii),
 953                (unsigned long long)btrfs_inode_rdev(eb,ii),
 954                (unsigned long long)btrfs_inode_flags(eb,ii),
 955                (unsigned long long)btrfs_inode_sequence(eb, ii),
 956                flags_str);
 957         print_timespec(eb, btrfs_inode_atime(ii), "\t\tatime ", "\n");
 958         print_timespec(eb, btrfs_inode_ctime(ii), "\t\tctime ", "\n");
 959         print_timespec(eb, btrfs_inode_mtime(ii), "\t\tmtime ", "\n");
 960         print_timespec(eb, btrfs_inode_otime(ii), "\t\totime ", "\n");
 961 }
 962
 963 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
 964 {
 965         int i;
 966         char *str;
 967         struct btrfs_item *item;
 968         struct btrfs_dir_item *di;
 969         struct btrfs_inode_item *ii;
 970         struct btrfs_file_extent_item *fi;
 971         struct btrfs_block_group_item *bi;
 972         struct btrfs_extent_data_ref *dref;
 973         struct btrfs_shared_data_ref *sref;
 974         struct btrfs_inode_ref *iref;
 975         struct btrfs_inode_extref *iref2;
 976         struct btrfs_dev_extent *dev_extent;
 977         struct btrfs_disk_key disk_key;
 978         struct btrfs_block_group_item bg_item;
 979         struct btrfs_free_space_info *free_info;
 980         struct btrfs_dir_log_item *dlog;
 981         struct btrfs_qgroup_info_item *qg_info;
 982         struct btrfs_qgroup_limit_item *qg_limit;
 983         struct btrfs_qgroup_status_item *qg_status;
 984         u32 nr = btrfs_header_nritems(l);
 985         u64 objectid;
 986         u32 type;
 987         char flags_str[256];
 988         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 989         u8 uuid[BTRFS_UUID_SIZE];
 990
 991         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
 992                 (unsigned long long)btrfs_header_bytenr(l), nr,
 993                 btrfs_leaf_free_space(root, l),
 994                 (unsigned long long)btrfs_header_generation(l),
 995                 (unsigned long long)btrfs_header_owner(l));
 996         print_uuids(l);
 997         fflush(stdout);
 998         for (i = 0 ; i < nr ; i++) {
 999                 item = btrfs_item_nr(i);
1000                 btrfs_item_key(l, &disk_key, i);
1001                 objectid = btrfs_disk_key_objectid(&disk_key);
1002                 type = btrfs_disk_key_type(&disk_key);
1003                 printf("\titem %d ", i);
1004                 btrfs_print_key(&disk_key);
1005                 printf(" itemoff %d itemsize %d\n",
1006                         btrfs_item_offset(l, item),
1007                         btrfs_item_size(l, item));
1008
1009                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
1010                         print_free_space_header(l, i);
1011
1012                 switch (type) {
1013                 case BTRFS_INODE_ITEM_KEY:
1014                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
1015                         print_inode_item(l, item, ii);
1016                         break;
1017                 case BTRFS_INODE_REF_KEY:
1018                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
1019                         print_inode_ref_item(l, item, iref);
1020                         break;
1021                 case BTRFS_INODE_EXTREF_KEY:
1022                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
1023                         print_inode_extref_item(l, item, iref2);
1024                         break;
1025                 case BTRFS_DIR_ITEM_KEY:
1026                 case BTRFS_DIR_INDEX_KEY:
1027                 case BTRFS_XATTR_ITEM_KEY:
1028                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
1029                         print_dir_item(l, item, di);
1030                         break;
1031                 case BTRFS_DIR_LOG_INDEX_KEY:
1032                 case BTRFS_DIR_LOG_ITEM_KEY:
1033                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
1034                         printf("\t\tdir log end %Lu\n",
1035                                (unsigned long long)btrfs_dir_log_end(l, dlog));
1036                        break;
1037                 case BTRFS_ORPHAN_ITEM_KEY:
1038                         printf("\t\torphan item\n");
1039                         break;
1040                 case BTRFS_ROOT_ITEM_KEY:
1041                         print_root(l, i);
1042                         break;
1043                 case BTRFS_ROOT_REF_KEY:
1044                         print_root_ref(l, i, "ref");
1045                         break;
1046                 case BTRFS_ROOT_BACKREF_KEY:
1047                         print_root_ref(l, i, "backref");
1048                         break;
1049                 case BTRFS_EXTENT_ITEM_KEY:
1050                         print_extent_item(l, i, 0);
1051                         break;
1052                 case BTRFS_METADATA_ITEM_KEY:
1053                         print_extent_item(l, i, 1);
1054                         break;
1055                 case BTRFS_TREE_BLOCK_REF_KEY:
1056                         printf("\t\ttree block backref\n");
1057                         break;
1058                 case BTRFS_SHARED_BLOCK_REF_KEY:
1059                         printf("\t\tshared block backref\n");
1060                         break;
1061                 case BTRFS_EXTENT_DATA_REF_KEY:
1062                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
1063                         printf("\t\textent data backref root %llu "
1064                                "objectid %llu offset %llu count %u\n",
1065                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
1066                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
1067                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
1068                                btrfs_extent_data_ref_count(l, dref));
1069                         break;
1070                 case BTRFS_SHARED_DATA_REF_KEY:
1071                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
1072                         printf("\t\tshared data backref count %u\n",
1073                                btrfs_shared_data_ref_count(l, sref));
1074                         break;
1075                 case BTRFS_EXTENT_REF_V0_KEY:
1076 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
1077                         print_extent_ref_v0(l, i);
1078 #else
1079                         BUG();
1080 #endif
1081                         break;
1082                 case BTRFS_CSUM_ITEM_KEY:
1083                         printf("\t\tcsum item\n");
1084                         break;
1085                 case BTRFS_EXTENT_CSUM_KEY:
1086                         printf("\t\textent csum item\n");
1087                         break;
1088                 case BTRFS_EXTENT_DATA_KEY:
1089                         fi = btrfs_item_ptr(l, i,
1090                                             struct btrfs_file_extent_item);
1091                         print_file_extent_item(l, item, i, fi);
1092                         break;
1093                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
1094                         bi = btrfs_item_ptr(l, i,
1095                                             struct btrfs_block_group_item);
1096                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
1097                                            sizeof(bg_item));
1098                         memset(flags_str, 0, sizeof(flags_str));
1099                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
1100                                         flags_str);
1101                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
1102                                (unsigned long long)btrfs_block_group_used(&bg_item),
1103                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
1104                                flags_str);
1105                         break;
1106                 case BTRFS_FREE_SPACE_INFO_KEY:
1107                         free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
1108                         printf("\t\tfree space info extent count %u flags %u\n",
1109                                (unsigned)btrfs_free_space_extent_count(l, free_info),
1110                                (unsigned)btrfs_free_space_flags(l, free_info));
1111                         break;
1112                 case BTRFS_FREE_SPACE_EXTENT_KEY:
1113                         printf("\t\tfree space extent\n");
1114                         break;
1115                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1116                         printf("\t\tfree space bitmap\n");
1117                         break;
1118                 case BTRFS_CHUNK_ITEM_KEY:
1119                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
1120                         break;
1121                 case BTRFS_DEV_ITEM_KEY:
1122                         print_dev_item(l, btrfs_item_ptr(l, i,
1123                                         struct btrfs_dev_item));
1124                         break;
1125                 case BTRFS_DEV_EXTENT_KEY:
1126                         dev_extent = btrfs_item_ptr(l, i,
1127                                                     struct btrfs_dev_extent);
1128                         read_extent_buffer(l, uuid,
1129                                 (unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
1130                                 BTRFS_UUID_SIZE);
1131                         uuid_unparse(uuid, uuid_str);
1132                         printf("\t\tdev extent chunk_tree %llu\n"
1133                                "\t\tchunk objectid %llu chunk offset %llu "
1134                                "length %llu\n"
1135                                "\t\tchunk_tree_uuid %s\n",
1136                                (unsigned long long)
1137                                btrfs_dev_extent_chunk_tree(l, dev_extent),
1138                                (unsigned long long)
1139                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
1140                                (unsigned long long)
1141                                btrfs_dev_extent_chunk_offset(l, dev_extent),
1142                                (unsigned long long)
1143                                btrfs_dev_extent_length(l, dev_extent),
1144                                uuid_str);
1145                         break;
1146                 case BTRFS_QGROUP_STATUS_KEY:
1147                         qg_status = btrfs_item_ptr(l, i,
1148                                         struct btrfs_qgroup_status_item);
1149                         memset(flags_str, 0, sizeof(flags_str));
1150                         qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
1151                                         flags_str);
1152                         printf("\t\tversion %llu generation %llu flags %s "
1153                                 "scan %lld\n",
1154                                 (unsigned long long)
1155                                 btrfs_qgroup_status_version(l, qg_status),
1156                                 (unsigned long long)
1157                                 btrfs_qgroup_status_generation(l, qg_status),
1158                                 flags_str,
1159                                 (unsigned long long)
1160                                 btrfs_qgroup_status_rescan(l, qg_status));
1161                         break;
1162                 case BTRFS_QGROUP_RELATION_KEY:
1163                         break;
1164                 case BTRFS_QGROUP_INFO_KEY:
1165                         qg_info = btrfs_item_ptr(l, i,
1166                                                  struct btrfs_qgroup_info_item);
1167                         printf("\t\tgeneration %llu\n"
1168                              "\t\treferenced %llu referenced compressed %llu\n"
1169                              "\t\texclusive %llu exclusive compressed %llu\n",
1170                                (unsigned long long)
1171                                btrfs_qgroup_info_generation(l, qg_info),
1172                                (unsigned long long)
1173                                btrfs_qgroup_info_referenced(l, qg_info),
1174                                (unsigned long long)
1175                                btrfs_qgroup_info_referenced_compressed(l,
1176                                                                        qg_info),
1177                                (unsigned long long)
1178                                btrfs_qgroup_info_exclusive(l, qg_info),
1179                                (unsigned long long)
1180                                btrfs_qgroup_info_exclusive_compressed(l,
1181                                                                       qg_info));
1182                         break;
1183                 case BTRFS_QGROUP_LIMIT_KEY:
1184                         qg_limit = btrfs_item_ptr(l, i,
1185                                          struct btrfs_qgroup_limit_item);
1186                         printf("\t\tflags %llx\n"
1187                              "\t\tmax referenced %lld max exclusive %lld\n"
1188                              "\t\trsv referenced %lld rsv exclusive %lld\n",
1189                                (unsigned long long)
1190                                btrfs_qgroup_limit_flags(l, qg_limit),
1191                                (long long)
1192                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
1193                                (long long)
1194                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
1195                                (long long)
1196                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
1197                                (long long)
1198                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
1199                         break;
1200                 case BTRFS_UUID_KEY_SUBVOL:
1201                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1202                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
1203                                         btrfs_item_size_nr(l, i));
1204                         break;
1205                 case BTRFS_STRING_ITEM_KEY:
1206                         /* dirty, but it's simple */
1207                         str = l->data + btrfs_item_ptr_offset(l, i);
1208                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
1209                         break;
1210                 case BTRFS_DEV_STATS_KEY:
1211                         printf("\t\tdevice stats\n");
1212                         break;
1213                 };
1214                 fflush(stdout);
1215         }
1216 }
1217
1218 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1219 {
1220         int i;
1221         u32 nr;
1222         u32 size;
1223         struct btrfs_disk_key disk_key;
1224         struct btrfs_key key;
1225         struct extent_buffer *next;
1226
1227         if (!eb)
1228                 return;
1229         nr = btrfs_header_nritems(eb);
1230         if (btrfs_is_leaf(eb)) {
1231                 btrfs_print_leaf(root, eb);
1232                 return;
1233         }
1234         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1235                (unsigned long long)eb->start,
1236                 btrfs_header_level(eb), nr,
1237                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1238                 (unsigned long long)btrfs_header_generation(eb),
1239                 (unsigned long long)btrfs_header_owner(eb));
1240         print_uuids(eb);
1241         fflush(stdout);
1242         size = root->nodesize;
1243         for (i = 0; i < nr; i++) {
1244                 u64 blocknr = btrfs_node_blockptr(eb, i);
1245                 btrfs_node_key(eb, &disk_key, i);
1246                 btrfs_disk_key_to_cpu(&key, &disk_key);
1247                 printf("\t");
1248                 btrfs_print_key(&disk_key);
1249                 printf(" block %llu (%llu) gen %llu\n",
1250                        (unsigned long long)blocknr,
1251                        (unsigned long long)blocknr / size,
1252                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1253                 fflush(stdout);
1254         }
1255         if (!follow)
1256                 return;
1257
1258         for (i = 0; i < nr; i++) {
1259                 next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
1260                                 btrfs_node_ptr_generation(eb, i));
1261                 if (!extent_buffer_uptodate(next)) {
1262                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1263                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1264                                 (unsigned long long)btrfs_header_owner(eb));
1265                         continue;
1266                 }
1267                 if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
1268                         warning(
1269         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1270                                 i, btrfs_header_level(next),
1271                                 btrfs_header_level(eb));
1272                         goto out;
1273                 }
1274                 if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
1275                         warning(
1276         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1277                                 i, btrfs_header_level(next),
1278                                 btrfs_header_level(eb));
1279                         goto out;
1280                 }
1281                 btrfs_print_tree(root, next, 1);
1282                 free_extent_buffer(next);
1283         }
1284
1285         return;
1286
1287 out:
1288         free_extent_buffer(next);
1289 }