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 const char* file_extent_type_to_str(u8 type)
 331 {
 332         switch (type) {
 333         case BTRFS_FILE_EXTENT_INLINE: return "inline";
 334         case BTRFS_FILE_EXTENT_PREALLOC: return "prealloc";
 335         case BTRFS_FILE_EXTENT_REG: return "regular";
 336         default: return "unknown";
 337         }
 338 }
 339
 340 static void print_file_extent_item(struct extent_buffer *eb,
 341                                    struct btrfs_item *item,
 342                                    int slot,
 343                                    struct btrfs_file_extent_item *fi)
 344 {
 345         int extent_type = btrfs_file_extent_type(eb, fi);
 346         char compress_str[16];
 347
 348         compress_type_to_str(btrfs_file_extent_compression(eb, fi),
 349                              compress_str);
 350
 351         printf("\t\tgeneration %llu type %hhu (%s)\n",
 352                         btrfs_file_extent_generation(eb, fi),
 353                         extent_type, file_extent_type_to_str(extent_type));
 354
 355         if (extent_type == BTRFS_FILE_EXTENT_INLINE) {
 356                 printf("\t\tinline extent data size %u ram %u compress(%s)\n",
 357                   btrfs_file_extent_inline_item_len(eb, item),
 358                   btrfs_file_extent_inline_len(eb, slot, fi),
 359                   compress_str);
 360                 return;
 361         }
 362         if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) {
 363                 printf("\t\tprealloc data disk byte %llu nr %llu\n",
 364                   (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 365                   (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 366                 printf("\t\tprealloc data offset %llu nr %llu\n",
 367                   (unsigned long long)btrfs_file_extent_offset(eb, fi),
 368                   (unsigned long long)btrfs_file_extent_num_bytes(eb, fi));
 369                 return;
 370         }
 371         printf("\t\textent data disk byte %llu nr %llu\n",
 372                 (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi),
 373                 (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi));
 374         printf("\t\textent data offset %llu nr %llu ram %llu\n",
 375                 (unsigned long long)btrfs_file_extent_offset(eb, fi),
 376                 (unsigned long long)btrfs_file_extent_num_bytes(eb, fi),
 377                 (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi));
 378         printf("\t\textent compression(%s)\n", compress_str);
 379 }
 380
 381 /* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */
 382 static void extent_flags_to_str(u64 flags, char *ret)
 383 {
 384         int empty = 1;
 385
 386         if (flags & BTRFS_EXTENT_FLAG_DATA) {
 387                 empty = 0;
 388                 strcpy(ret, "DATA");
 389         }
 390         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
 391                 if (!empty) {
 392                         empty = 0;
 393                         strcat(ret, "|");
 394                 }
 395                 strcat(ret, "TREE_BLOCK");
 396         }
 397         if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) {
 398                 strcat(ret, "|");
 399                 strcat(ret, "FULL_BACKREF");
 400         }
 401 }
 402
 403 void print_extent_item(struct extent_buffer *eb, int slot, int metadata)
 404 {
 405         struct btrfs_extent_item *ei;
 406         struct btrfs_extent_inline_ref *iref;
 407         struct btrfs_extent_data_ref *dref;
 408         struct btrfs_shared_data_ref *sref;
 409         struct btrfs_disk_key key;
 410         unsigned long end;
 411         unsigned long ptr;
 412         int type;
 413         u32 item_size = btrfs_item_size_nr(eb, slot);
 414         u64 flags;
 415         u64 offset;
 416         char flags_str[32] = {0};
 417
 418         if (item_size < sizeof(*ei)) {
 419 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 420                 struct btrfs_extent_item_v0 *ei0;
 421                 BUG_ON(item_size != sizeof(*ei0));
 422                 ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0);
 423                 printf("\t\textent refs %u\n",
 424                        btrfs_extent_refs_v0(eb, ei0));
 425                 return;
 426 #else
 427                 BUG();
 428 #endif
 429         }
 430
 431         ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item);
 432         flags = btrfs_extent_flags(eb, ei);
 433         extent_flags_to_str(flags, flags_str);
 434
 435         printf("\t\textent refs %llu gen %llu flags %s\n",
 436                (unsigned long long)btrfs_extent_refs(eb, ei),
 437                (unsigned long long)btrfs_extent_generation(eb, ei),
 438                flags_str);
 439
 440         if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) {
 441                 struct btrfs_tree_block_info *info;
 442                 info = (struct btrfs_tree_block_info *)(ei + 1);
 443                 btrfs_tree_block_key(eb, info, &key);
 444                 printf("\t\ttree block ");
 445                 btrfs_print_key(&key);
 446                 printf(" level %d\n", btrfs_tree_block_level(eb, info));
 447                 iref = (struct btrfs_extent_inline_ref *)(info + 1);
 448         } else if (metadata) {
 449                 struct btrfs_key tmp;
 450
 451                 btrfs_item_key_to_cpu(eb, &tmp, slot);
 452                 printf("\t\ttree block skinny level %d\n", (int)tmp.offset);
 453                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 454         } else{
 455                 iref = (struct btrfs_extent_inline_ref *)(ei + 1);
 456         }
 457
 458         ptr = (unsigned long)iref;
 459         end = (unsigned long)ei + item_size;
 460         while (ptr < end) {
 461                 iref = (struct btrfs_extent_inline_ref *)ptr;
 462                 type = btrfs_extent_inline_ref_type(eb, iref);
 463                 offset = btrfs_extent_inline_ref_offset(eb, iref);
 464                 switch (type) {
 465                 case BTRFS_TREE_BLOCK_REF_KEY:
 466                         printf("\t\ttree block backref root %llu\n",
 467                                (unsigned long long)offset);
 468                         break;
 469                 case BTRFS_SHARED_BLOCK_REF_KEY:
 470                         printf("\t\tshared block backref parent %llu\n",
 471                                (unsigned long long)offset);
 472                         break;
 473                 case BTRFS_EXTENT_DATA_REF_KEY:
 474                         dref = (struct btrfs_extent_data_ref *)(&iref->offset);
 475                         printf("\t\textent data backref root %llu "
 476                                "objectid %llu offset %llu count %u\n",
 477                                (unsigned long long)btrfs_extent_data_ref_root(eb, dref),
 478                                (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref),
 479                                (unsigned long long)btrfs_extent_data_ref_offset(eb, dref),
 480                                btrfs_extent_data_ref_count(eb, dref));
 481                         break;
 482                 case BTRFS_SHARED_DATA_REF_KEY:
 483                         sref = (struct btrfs_shared_data_ref *)(iref + 1);
 484                         printf("\t\tshared data backref parent %llu count %u\n",
 485                                (unsigned long long)offset,
 486                                btrfs_shared_data_ref_count(eb, sref));
 487                         break;
 488                 default:
 489                         return;
 490                 }
 491                 ptr += btrfs_extent_inline_ref_size(type);
 492         }
 493         WARN_ON(ptr > end);
 494 }
 495
 496 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
 497 static void print_extent_ref_v0(struct extent_buffer *eb, int slot)
 498 {
 499         struct btrfs_extent_ref_v0 *ref0;
 500
 501         ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0);
 502         printf("\t\textent back ref root %llu gen %llu "
 503                 "owner %llu num_refs %lu\n",
 504                 (unsigned long long)btrfs_ref_root_v0(eb, ref0),
 505                 (unsigned long long)btrfs_ref_generation_v0(eb, ref0),
 506                 (unsigned long long)btrfs_ref_objectid_v0(eb, ref0),
 507                 (unsigned long)btrfs_ref_count_v0(eb, ref0));
 508 }
 509 #endif
 510
 511 static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag)
 512 {
 513         struct btrfs_root_ref *ref;
 514         char namebuf[BTRFS_NAME_LEN];
 515         int namelen;
 516
 517         ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref);
 518         namelen = btrfs_root_ref_name_len(leaf, ref);
 519         read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen);
 520         printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag,
 521                (unsigned long long)btrfs_root_ref_dirid(leaf, ref),
 522                (unsigned long long)btrfs_root_ref_sequence(leaf, ref),
 523                namelen, namebuf);
 524 }
 525
 526 static int count_bytes(void *buf, int len, char b)
 527 {
 528         int cnt = 0;
 529         int i;
 530         for (i = 0; i < len; i++) {
 531                 if (((char*)buf)[i] == b)
 532                         cnt++;
 533         }
 534         return cnt;
 535 }
 536
 537 /*
 538  * Caller must ensure sizeof(*ret) >= 7 "RDONLY"
 539  */
 540 static void root_flags_to_str(u64 flags, char *ret)
 541 {
 542         if (flags & BTRFS_ROOT_SUBVOL_RDONLY)
 543                 strcat(ret, "RDONLY");
 544         else
 545                 strcat(ret, "none");
 546 }
 547
 548 static void print_root(struct extent_buffer *leaf, int slot)
 549 {
 550         struct btrfs_root_item *ri;
 551         struct btrfs_root_item root_item;
 552         int len;
 553         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
 554         char flags_str[32] = {0};
 555         struct btrfs_key drop_key;
 556
 557         ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item);
 558         len = btrfs_item_size_nr(leaf, slot);
 559
 560         memset(&root_item, 0, sizeof(root_item));
 561         read_extent_buffer(leaf, &root_item, (unsigned long)ri, len);
 562         root_flags_to_str(btrfs_root_flags(&root_item), flags_str);
 563
 564         printf("\t\tgeneration %llu root_dirid %llu bytenr %llu level %hhu refs %u\n",
 565                 (unsigned long long)btrfs_root_generation(&root_item),
 566                 (unsigned long long)btrfs_root_dirid(&root_item),
 567                 (unsigned long long)btrfs_root_bytenr(&root_item),
 568                 btrfs_root_level(&root_item),
 569                 btrfs_root_refs(&root_item));
 570         printf("\t\tlastsnap %llu byte_limit %llu bytes_used %llu flags 0x%llx(%s)\n",
 571                 (unsigned long long)btrfs_root_last_snapshot(&root_item),
 572                 (unsigned long long)btrfs_root_limit(&root_item),
 573                 (unsigned long long)btrfs_root_used(&root_item),
 574                 (unsigned long long)btrfs_root_flags(&root_item),
 575                 flags_str);
 576
 577         if (root_item.generation == root_item.generation_v2) {
 578                 uuid_unparse(root_item.uuid, uuid_str);
 579                 printf("\t\tuuid %s\n", uuid_str);
 580                 if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 581                         uuid_unparse(root_item.parent_uuid, uuid_str);
 582                         printf("\t\tparent_uuid %s\n", uuid_str);
 583                 }
 584                 if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) {
 585                         uuid_unparse(root_item.received_uuid, uuid_str);
 586                         printf("\t\treceived_uuid %s\n", uuid_str);
 587                 }
 588                 if (root_item.ctransid) {
 589                         printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n",
 590                                 btrfs_root_ctransid(&root_item),
 591                                 btrfs_root_otransid(&root_item),
 592                                 btrfs_root_stransid(&root_item),
 593                                 btrfs_root_rtransid(&root_item));
 594                 }
 595         }
 596
 597         btrfs_disk_key_to_cpu(&drop_key, &root_item.drop_progress);
 598         printf("\t\tdrop ");
 599         btrfs_print_key(&root_item.drop_progress);
 600         printf(" level %hhu\n", root_item.drop_level);
 601 }
 602
 603 static void print_free_space_header(struct extent_buffer *leaf, int slot)
 604 {
 605         struct btrfs_free_space_header *header;
 606         struct btrfs_disk_key location;
 607
 608         header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header);
 609         btrfs_free_space_key(leaf, header, &location);
 610         printf("\t\tlocation ");
 611         btrfs_print_key(&location);
 612         printf("\n");
 613         printf("\t\tcache generation %llu entries %llu bitmaps %llu\n",
 614                (unsigned long long)btrfs_free_space_generation(leaf, header),
 615                (unsigned long long)btrfs_free_space_entries(leaf, header),
 616                (unsigned long long)btrfs_free_space_bitmaps(leaf, header));
 617 }
 618
 619 void print_key_type(FILE *stream, u64 objectid, u8 type)
 620 {
 621         if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) {
 622                 fprintf(stream, "UNTYPED");
 623                 return;
 624         }
 625
 626         switch (type) {
 627         case BTRFS_INODE_ITEM_KEY:
 628                 fprintf(stream, "INODE_ITEM");
 629                 break;
 630         case BTRFS_INODE_REF_KEY:
 631                 fprintf(stream, "INODE_REF");
 632                 break;
 633         case BTRFS_INODE_EXTREF_KEY:
 634                 fprintf(stream, "INODE_EXTREF");
 635                 break;
 636         case BTRFS_DIR_ITEM_KEY:
 637                 fprintf(stream, "DIR_ITEM");
 638                 break;
 639         case BTRFS_DIR_INDEX_KEY:
 640                 fprintf(stream, "DIR_INDEX");
 641                 break;
 642         case BTRFS_DIR_LOG_ITEM_KEY:
 643                 fprintf(stream, "DIR_LOG_ITEM");
 644                 break;
 645         case BTRFS_DIR_LOG_INDEX_KEY:
 646                 fprintf(stream, "DIR_LOG_INDEX");
 647                 break;
 648         case BTRFS_XATTR_ITEM_KEY:
 649                 fprintf(stream, "XATTR_ITEM");
 650                 break;
 651         case BTRFS_ORPHAN_ITEM_KEY:
 652                 fprintf(stream, "ORPHAN_ITEM");
 653                 break;
 654         case BTRFS_ROOT_ITEM_KEY:
 655                 fprintf(stream, "ROOT_ITEM");
 656                 break;
 657         case BTRFS_ROOT_REF_KEY:
 658                 fprintf(stream, "ROOT_REF");
 659                 break;
 660         case BTRFS_ROOT_BACKREF_KEY:
 661                 fprintf(stream, "ROOT_BACKREF");
 662                 break;
 663         case BTRFS_EXTENT_ITEM_KEY:
 664                 fprintf(stream, "EXTENT_ITEM");
 665                 break;
 666         case BTRFS_METADATA_ITEM_KEY:
 667                 fprintf(stream, "METADATA_ITEM");
 668                 break;
 669         case BTRFS_TREE_BLOCK_REF_KEY:
 670                 fprintf(stream, "TREE_BLOCK_REF");
 671                 break;
 672         case BTRFS_SHARED_BLOCK_REF_KEY:
 673                 fprintf(stream, "SHARED_BLOCK_REF");
 674                 break;
 675         case BTRFS_EXTENT_DATA_REF_KEY:
 676                 fprintf(stream, "EXTENT_DATA_REF");
 677                 break;
 678         case BTRFS_SHARED_DATA_REF_KEY:
 679                 fprintf(stream, "SHARED_DATA_REF");
 680                 break;
 681         case BTRFS_EXTENT_REF_V0_KEY:
 682                 fprintf(stream, "EXTENT_REF_V0");
 683                 break;
 684         case BTRFS_CSUM_ITEM_KEY:
 685                 fprintf(stream, "CSUM_ITEM");
 686                 break;
 687         case BTRFS_EXTENT_CSUM_KEY:
 688                 fprintf(stream, "EXTENT_CSUM");
 689                 break;
 690         case BTRFS_EXTENT_DATA_KEY:
 691                 fprintf(stream, "EXTENT_DATA");
 692                 break;
 693         case BTRFS_BLOCK_GROUP_ITEM_KEY:
 694                 fprintf(stream, "BLOCK_GROUP_ITEM");
 695                 break;
 696         case BTRFS_FREE_SPACE_INFO_KEY:
 697                 fprintf(stream, "FREE_SPACE_INFO");
 698                 break;
 699         case BTRFS_FREE_SPACE_EXTENT_KEY:
 700                 fprintf(stream, "FREE_SPACE_EXTENT");
 701                 break;
 702         case BTRFS_FREE_SPACE_BITMAP_KEY:
 703                 fprintf(stream, "FREE_SPACE_BITMAP");
 704                 break;
 705         case BTRFS_CHUNK_ITEM_KEY:
 706                 fprintf(stream, "CHUNK_ITEM");
 707                 break;
 708         case BTRFS_DEV_ITEM_KEY:
 709                 fprintf(stream, "DEV_ITEM");
 710                 break;
 711         case BTRFS_DEV_EXTENT_KEY:
 712                 fprintf(stream, "DEV_EXTENT");
 713                 break;
 714         case BTRFS_BALANCE_ITEM_KEY:
 715                 fprintf(stream, "BALANCE_ITEM");
 716                 break;
 717         case BTRFS_DEV_REPLACE_KEY:
 718                 fprintf(stream, "DEV_REPLACE");
 719                 break;
 720         case BTRFS_STRING_ITEM_KEY:
 721                 fprintf(stream, "STRING_ITEM");
 722                 break;
 723         case BTRFS_QGROUP_STATUS_KEY:
 724                 fprintf(stream, "QGROUP_STATUS");
 725                 break;
 726         case BTRFS_QGROUP_RELATION_KEY:
 727                 fprintf(stream, "QGROUP_RELATION");
 728                 break;
 729         case BTRFS_QGROUP_INFO_KEY:
 730                 fprintf(stream, "QGROUP_INFO");
 731                 break;
 732         case BTRFS_QGROUP_LIMIT_KEY:
 733                 fprintf(stream, "QGROUP_LIMIT");
 734                 break;
 735         case BTRFS_DEV_STATS_KEY:
 736                 fprintf(stream, "DEV_STATS");
 737                 break;
 738         case BTRFS_UUID_KEY_SUBVOL:
 739                 fprintf(stream, "UUID_KEY_SUBVOL");
 740                 break;
 741         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 742                 fprintf(stream, "UUID_KEY_RECEIVED_SUBVOL");
 743                 break;
 744         default:
 745                 fprintf(stream, "UNKNOWN.%d", type);
 746         };
 747 }
 748
 749 void print_objectid(FILE *stream, u64 objectid, u8 type)
 750 {
 751         switch (type) {
 752         case BTRFS_DEV_EXTENT_KEY:
 753                 /* device id */
 754                 fprintf(stream, "%llu", (unsigned long long)objectid);
 755                 return;
 756         case BTRFS_QGROUP_RELATION_KEY:
 757                 fprintf(stream, "%llu/%llu", btrfs_qgroup_level(objectid),
 758                        btrfs_qgroup_subvid(objectid));
 759                 return;
 760         case BTRFS_UUID_KEY_SUBVOL:
 761         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 762                 fprintf(stream, "0x%016llx", (unsigned long long)objectid);
 763                 return;
 764         }
 765
 766         switch (objectid) {
 767         case BTRFS_ROOT_TREE_OBJECTID:
 768                 if (type == BTRFS_DEV_ITEM_KEY)
 769                         fprintf(stream, "DEV_ITEMS");
 770                 else
 771                         fprintf(stream, "ROOT_TREE");
 772                 break;
 773         case BTRFS_EXTENT_TREE_OBJECTID:
 774                 fprintf(stream, "EXTENT_TREE");
 775                 break;
 776         case BTRFS_CHUNK_TREE_OBJECTID:
 777                 fprintf(stream, "CHUNK_TREE");
 778                 break;
 779         case BTRFS_DEV_TREE_OBJECTID:
 780                 fprintf(stream, "DEV_TREE");
 781                 break;
 782         case BTRFS_FS_TREE_OBJECTID:
 783                 fprintf(stream, "FS_TREE");
 784                 break;
 785         case BTRFS_ROOT_TREE_DIR_OBJECTID:
 786                 fprintf(stream, "ROOT_TREE_DIR");
 787                 break;
 788         case BTRFS_CSUM_TREE_OBJECTID:
 789                 fprintf(stream, "CSUM_TREE");
 790                 break;
 791         case BTRFS_BALANCE_OBJECTID:
 792                 fprintf(stream, "BALANCE");
 793                 break;
 794         case BTRFS_ORPHAN_OBJECTID:
 795                 fprintf(stream, "ORPHAN");
 796                 break;
 797         case BTRFS_TREE_LOG_OBJECTID:
 798                 fprintf(stream, "TREE_LOG");
 799                 break;
 800         case BTRFS_TREE_LOG_FIXUP_OBJECTID:
 801                 fprintf(stream, "LOG_FIXUP");
 802                 break;
 803         case BTRFS_TREE_RELOC_OBJECTID:
 804                 fprintf(stream, "TREE_RELOC");
 805                 break;
 806         case BTRFS_DATA_RELOC_TREE_OBJECTID:
 807                 fprintf(stream, "DATA_RELOC_TREE");
 808                 break;
 809         case BTRFS_EXTENT_CSUM_OBJECTID:
 810                 fprintf(stream, "EXTENT_CSUM");
 811                 break;
 812         case BTRFS_FREE_SPACE_OBJECTID:
 813                 fprintf(stream, "FREE_SPACE");
 814                 break;
 815         case BTRFS_FREE_INO_OBJECTID:
 816                 fprintf(stream, "FREE_INO");
 817                 break;
 818         case BTRFS_QUOTA_TREE_OBJECTID:
 819                 fprintf(stream, "QUOTA_TREE");
 820                 break;
 821         case BTRFS_UUID_TREE_OBJECTID:
 822                 fprintf(stream, "UUID_TREE");
 823                 break;
 824         case BTRFS_FREE_SPACE_TREE_OBJECTID:
 825                 fprintf(stream, "FREE_SPACE_TREE");
 826                 break;
 827         case BTRFS_MULTIPLE_OBJECTIDS:
 828                 fprintf(stream, "MULTIPLE");
 829                 break;
 830         case (u64)-1:
 831                 fprintf(stream, "-1");
 832                 break;
 833         case BTRFS_FIRST_CHUNK_TREE_OBJECTID:
 834                 if (type == BTRFS_CHUNK_ITEM_KEY) {
 835                         fprintf(stream, "FIRST_CHUNK_TREE");
 836                         break;
 837                 }
 838                 /* fall-thru */
 839         default:
 840                 fprintf(stream, "%llu", (unsigned long long)objectid);
 841         }
 842 }
 843
 844 void btrfs_print_key(struct btrfs_disk_key *disk_key)
 845 {
 846         u64 objectid = btrfs_disk_key_objectid(disk_key);
 847         u8 type = btrfs_disk_key_type(disk_key);
 848         u64 offset = btrfs_disk_key_offset(disk_key);
 849
 850         printf("key (");
 851         print_objectid(stdout, objectid, type);
 852         printf(" ");
 853         print_key_type(stdout, objectid, type);
 854         switch (type) {
 855         case BTRFS_QGROUP_RELATION_KEY:
 856         case BTRFS_QGROUP_INFO_KEY:
 857         case BTRFS_QGROUP_LIMIT_KEY:
 858                 printf(" %llu/%llu)", btrfs_qgroup_level(offset),
 859                        btrfs_qgroup_subvid(offset));
 860                 break;
 861         case BTRFS_UUID_KEY_SUBVOL:
 862         case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
 863                 printf(" 0x%016llx)", (unsigned long long)offset);
 864                 break;
 865         default:
 866                 if (offset == (u64)-1)
 867                         printf(" -1)");
 868                 else
 869                         printf(" %llu)", (unsigned long long)offset);
 870                 break;
 871         }
 872 }
 873
 874 static void print_uuid_item(struct extent_buffer *l, unsigned long offset,
 875                             u32 item_size)
 876 {
 877         if (item_size & (sizeof(u64) - 1)) {
 878                 printf("btrfs: uuid item with illegal size %lu!\n",
 879                        (unsigned long)item_size);
 880                 return;
 881         }
 882         while (item_size) {
 883                 __le64 subvol_id;
 884
 885                 read_extent_buffer(l, &subvol_id, offset, sizeof(u64));
 886                 printf("\t\tsubvol_id %llu\n",
 887                         (unsigned long long)le64_to_cpu(subvol_id));
 888                 item_size -= sizeof(u64);
 889                 offset += sizeof(u64);
 890         }
 891 }
 892
 893 /* Btrfs inode flag stringification helper */
 894 #define STRCAT_ONE_INODE_FLAG(flags, name, empty, dst) ({                       \
 895         if (flags & BTRFS_INODE_##name) {                               \
 896                 if (!empty)                                             \
 897                         strcat(dst, "|");                               \
 898                 strcat(dst, #name);                                     \
 899                 empty = 0;                                              \
 900         }                                                               \
 901 })
 902
 903 /*
 904  * Caller should ensure sizeof(*ret) >= 102: all charactors plus '|' of
 905  * BTRFS_INODE_* flags
 906  */
 907 static void inode_flags_to_str(u64 flags, char *ret)
 908 {
 909         int empty = 1;
 910
 911         STRCAT_ONE_INODE_FLAG(flags, NODATASUM, empty, ret);
 912         STRCAT_ONE_INODE_FLAG(flags, NODATACOW, empty, ret);
 913         STRCAT_ONE_INODE_FLAG(flags, READONLY, empty, ret);
 914         STRCAT_ONE_INODE_FLAG(flags, NOCOMPRESS, empty, ret);
 915         STRCAT_ONE_INODE_FLAG(flags, PREALLOC, empty, ret);
 916         STRCAT_ONE_INODE_FLAG(flags, SYNC, empty, ret);
 917         STRCAT_ONE_INODE_FLAG(flags, IMMUTABLE, empty, ret);
 918         STRCAT_ONE_INODE_FLAG(flags, APPEND, empty, ret);
 919         STRCAT_ONE_INODE_FLAG(flags, NODUMP, empty, ret);
 920         STRCAT_ONE_INODE_FLAG(flags, NOATIME, empty, ret);
 921         STRCAT_ONE_INODE_FLAG(flags, DIRSYNC, empty, ret);
 922         STRCAT_ONE_INODE_FLAG(flags, COMPRESS, empty, ret);
 923         if (empty)
 924                 strcat(ret, "none");
 925 }
 926
 927 static void print_timespec(struct extent_buffer *eb,
 928                 struct btrfs_timespec *timespec, const char *prefix,
 929                 const char *suffix)
 930 {
 931         struct tm tm;
 932         u64 tmp_u64;
 933         u32 tmp_u32;
 934         time_t tmp_time;
 935         char timestamp[256];
 936
 937         tmp_u64 = btrfs_timespec_sec(eb, timespec);
 938         tmp_u32 = btrfs_timespec_nsec(eb, timespec);
 939         tmp_time = tmp_u64;
 940         localtime_r(&tmp_time, &tm);
 941         strftime(timestamp, sizeof(timestamp),
 942                         "%Y-%m-%d %H:%M:%S", &tm);
 943         printf("%s%llu.%u (%s)%s", prefix, (unsigned long long)tmp_u64, tmp_u32,
 944                         timestamp, suffix);
 945 }
 946
 947 static void print_inode_item(struct extent_buffer *eb, struct btrfs_item *item,
 948                                 struct btrfs_inode_item *ii)
 949 {
 950         char flags_str[256];
 951
 952         memset(flags_str, 0, sizeof(flags_str));
 953         inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
 954         printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
 955                "\t\tblock group %llu mode %o links %u uid %u gid %u rdev %llu\n"
 956                "\t\tsequence %llu flags 0x%llx(%s)\n",
 957                (unsigned long long)btrfs_inode_generation(eb, ii),
 958                (unsigned long long)btrfs_inode_transid(eb, ii),
 959                (unsigned long long)btrfs_inode_size(eb, ii),
 960                (unsigned long long)btrfs_inode_nbytes(eb, ii),
 961                (unsigned long long)btrfs_inode_block_group(eb,ii),
 962                btrfs_inode_mode(eb, ii),
 963                btrfs_inode_nlink(eb, ii),
 964                btrfs_inode_uid(eb, ii),
 965                btrfs_inode_gid(eb, ii),
 966                (unsigned long long)btrfs_inode_rdev(eb,ii),
 967                (unsigned long long)btrfs_inode_flags(eb,ii),
 968                (unsigned long long)btrfs_inode_sequence(eb, ii),
 969                flags_str);
 970         print_timespec(eb, btrfs_inode_atime(ii), "\t\tatime ", "\n");
 971         print_timespec(eb, btrfs_inode_ctime(ii), "\t\tctime ", "\n");
 972         print_timespec(eb, btrfs_inode_mtime(ii), "\t\tmtime ", "\n");
 973         print_timespec(eb, btrfs_inode_otime(ii), "\t\totime ", "\n");
 974 }
 975
 976 static void print_disk_balance_args(struct btrfs_disk_balance_args *ba)
 977 {
 978         printf("\t\tprofiles %llu devid %llu target %llu flags %llu\n",
 979                         (unsigned long long)le64_to_cpu(ba->profiles),
 980                         (unsigned long long)le64_to_cpu(ba->devid),
 981                         (unsigned long long)le64_to_cpu(ba->target),
 982                         (unsigned long long)le64_to_cpu(ba->flags));
 983         printf("\t\tusage_min %u usage_max %u pstart %llu pend %llu\n",
 984                         le32_to_cpu(ba->usage_min),
 985                         le32_to_cpu(ba->usage_max),
 986                         (unsigned long long)le64_to_cpu(ba->pstart),
 987                         (unsigned long long)le64_to_cpu(ba->pend));
 988         printf("\t\tvstart %llu vend %llu limit_min %u limit_max %u\n",
 989                         (unsigned long long)le64_to_cpu(ba->vstart),
 990                         (unsigned long long)le64_to_cpu(ba->vend),
 991                         le32_to_cpu(ba->limit_min),
 992                         le32_to_cpu(ba->limit_max));
 993         printf("\t\tstripes_min %u stripes_max %u\n",
 994                         le32_to_cpu(ba->stripes_min),
 995                         le32_to_cpu(ba->stripes_max));
 996 }
 997
 998 static void print_balance_item(struct extent_buffer *eb,
 999                 struct btrfs_balance_item *bi)
1000 {
1001         printf("\t\tbalance status flags %llu\n",
1002                         btrfs_balance_item_flags(eb, bi));
1003
1004         printf("\t\tDATA\n");
1005         print_disk_balance_args(btrfs_balance_item_data(eb, bi));
1006         printf("\t\tMETADATA\n");
1007         print_disk_balance_args(btrfs_balance_item_meta(eb, bi));
1008         printf("\t\tSYSTEM\n");
1009         print_disk_balance_args(btrfs_balance_item_sys(eb, bi));
1010 }
1011
1012 static void print_dev_stats(struct extent_buffer *eb,
1013                 struct btrfs_dev_stats_item *stats, u32 size)
1014 {
1015         int i;
1016         u32 known = BTRFS_DEV_STAT_VALUES_MAX * sizeof(__le64);
1017         __le64 *values = btrfs_dev_stats_values(eb, stats);
1018
1019         printf("\t\tdevice stats\n");
1020         printf("\t\twrite_errs %llu read_errs %llu flush_errs %llu corruption_errs %llu generation %llu\n",
1021                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_WRITE_ERRS]),
1022                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_READ_ERRS]),
1023                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_FLUSH_ERRS]),
1024                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_CORRUPTION_ERRS]),
1025                 (unsigned long long)le64_to_cpu(values[BTRFS_DEV_STAT_GENERATION_ERRS]));
1026
1027         if (known < size) {
1028                 printf("\t\tunknown stats item bytes %u", size - known);
1029                 for (i = BTRFS_DEV_STAT_VALUES_MAX; i * sizeof(__le64) < size; i++) {
1030                         printf("\t\tunknown item %u offset %lu value %llu\n",
1031                                 i, i * sizeof(__le64),
1032                                 (unsigned long long)le64_to_cpu(values[i]));
1033                 }
1034         }
1035 }
1036
1037 void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
1038 {
1039         int i;
1040         char *str;
1041         struct btrfs_item *item;
1042         struct btrfs_dir_item *di;
1043         struct btrfs_inode_item *ii;
1044         struct btrfs_file_extent_item *fi;
1045         struct btrfs_block_group_item *bi;
1046         struct btrfs_extent_data_ref *dref;
1047         struct btrfs_shared_data_ref *sref;
1048         struct btrfs_inode_ref *iref;
1049         struct btrfs_inode_extref *iref2;
1050         struct btrfs_dev_extent *dev_extent;
1051         struct btrfs_disk_key disk_key;
1052         struct btrfs_block_group_item bg_item;
1053         struct btrfs_free_space_info *free_info;
1054         struct btrfs_dir_log_item *dlog;
1055         struct btrfs_qgroup_info_item *qg_info;
1056         struct btrfs_qgroup_limit_item *qg_limit;
1057         struct btrfs_qgroup_status_item *qg_status;
1058         u32 nr = btrfs_header_nritems(l);
1059         u64 objectid;
1060         u32 type;
1061         u64 offset;
1062         char flags_str[256];
1063         char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
1064         u8 uuid[BTRFS_UUID_SIZE];
1065
1066         printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
1067                 (unsigned long long)btrfs_header_bytenr(l), nr,
1068                 btrfs_leaf_free_space(root, l),
1069                 (unsigned long long)btrfs_header_generation(l),
1070                 (unsigned long long)btrfs_header_owner(l));
1071         print_uuids(l);
1072         fflush(stdout);
1073         for (i = 0 ; i < nr ; i++) {
1074                 item = btrfs_item_nr(i);
1075                 btrfs_item_key(l, &disk_key, i);
1076                 objectid = btrfs_disk_key_objectid(&disk_key);
1077                 type = btrfs_disk_key_type(&disk_key);
1078                 offset = btrfs_disk_key_offset(&disk_key);
1079                 printf("\titem %d ", i);
1080                 btrfs_print_key(&disk_key);
1081                 printf(" itemoff %d itemsize %d\n",
1082                         btrfs_item_offset(l, item),
1083                         btrfs_item_size(l, item));
1084
1085                 if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
1086                         print_free_space_header(l, i);
1087
1088                 switch (type) {
1089                 case BTRFS_INODE_ITEM_KEY:
1090                         ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
1091                         print_inode_item(l, item, ii);
1092                         break;
1093                 case BTRFS_INODE_REF_KEY:
1094                         iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref);
1095                         print_inode_ref_item(l, item, iref);
1096                         break;
1097                 case BTRFS_INODE_EXTREF_KEY:
1098                         iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref);
1099                         print_inode_extref_item(l, item, iref2);
1100                         break;
1101                 case BTRFS_DIR_ITEM_KEY:
1102                 case BTRFS_DIR_INDEX_KEY:
1103                 case BTRFS_XATTR_ITEM_KEY:
1104                         di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
1105                         print_dir_item(l, item, di);
1106                         break;
1107                 case BTRFS_DIR_LOG_INDEX_KEY:
1108                 case BTRFS_DIR_LOG_ITEM_KEY:
1109                         dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item);
1110                         printf("\t\tdir log end %Lu\n",
1111                                (unsigned long long)btrfs_dir_log_end(l, dlog));
1112                        break;
1113                 case BTRFS_ORPHAN_ITEM_KEY:
1114                         printf("\t\torphan item\n");
1115                         break;
1116                 case BTRFS_ROOT_ITEM_KEY:
1117                         print_root(l, i);
1118                         break;
1119                 case BTRFS_ROOT_REF_KEY:
1120                         print_root_ref(l, i, "ref");
1121                         break;
1122                 case BTRFS_ROOT_BACKREF_KEY:
1123                         print_root_ref(l, i, "backref");
1124                         break;
1125                 case BTRFS_EXTENT_ITEM_KEY:
1126                         print_extent_item(l, i, 0);
1127                         break;
1128                 case BTRFS_METADATA_ITEM_KEY:
1129                         print_extent_item(l, i, 1);
1130                         break;
1131                 case BTRFS_TREE_BLOCK_REF_KEY:
1132                         printf("\t\ttree block backref\n");
1133                         break;
1134                 case BTRFS_SHARED_BLOCK_REF_KEY:
1135                         printf("\t\tshared block backref\n");
1136                         break;
1137                 case BTRFS_EXTENT_DATA_REF_KEY:
1138                         dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref);
1139                         printf("\t\textent data backref root %llu "
1140                                "objectid %llu offset %llu count %u\n",
1141                                (unsigned long long)btrfs_extent_data_ref_root(l, dref),
1142                                (unsigned long long)btrfs_extent_data_ref_objectid(l, dref),
1143                                (unsigned long long)btrfs_extent_data_ref_offset(l, dref),
1144                                btrfs_extent_data_ref_count(l, dref));
1145                         break;
1146                 case BTRFS_SHARED_DATA_REF_KEY:
1147                         sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref);
1148                         printf("\t\tshared data backref count %u\n",
1149                                btrfs_shared_data_ref_count(l, sref));
1150                         break;
1151                 case BTRFS_EXTENT_REF_V0_KEY:
1152 #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
1153                         print_extent_ref_v0(l, i);
1154 #else
1155                         BUG();
1156 #endif
1157                         break;
1158                 case BTRFS_CSUM_ITEM_KEY:
1159                         printf("\t\tcsum item\n");
1160                         break;
1161                 case BTRFS_EXTENT_CSUM_KEY:
1162                         printf("\t\textent csum item\n");
1163                         break;
1164                 case BTRFS_EXTENT_DATA_KEY:
1165                         fi = btrfs_item_ptr(l, i,
1166                                             struct btrfs_file_extent_item);
1167                         print_file_extent_item(l, item, i, fi);
1168                         break;
1169                 case BTRFS_BLOCK_GROUP_ITEM_KEY:
1170                         bi = btrfs_item_ptr(l, i,
1171                                             struct btrfs_block_group_item);
1172                         read_extent_buffer(l, &bg_item, (unsigned long)bi,
1173                                            sizeof(bg_item));
1174                         memset(flags_str, 0, sizeof(flags_str));
1175                         bg_flags_to_str(btrfs_block_group_flags(&bg_item),
1176                                         flags_str);
1177                         printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n",
1178                                (unsigned long long)btrfs_block_group_used(&bg_item),
1179                                (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
1180                                flags_str);
1181                         break;
1182                 case BTRFS_FREE_SPACE_INFO_KEY:
1183                         free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info);
1184                         printf("\t\tfree space info extent count %u flags %u\n",
1185                                (unsigned)btrfs_free_space_extent_count(l, free_info),
1186                                (unsigned)btrfs_free_space_flags(l, free_info));
1187                         break;
1188                 case BTRFS_FREE_SPACE_EXTENT_KEY:
1189                         printf("\t\tfree space extent\n");
1190                         break;
1191                 case BTRFS_FREE_SPACE_BITMAP_KEY:
1192                         printf("\t\tfree space bitmap\n");
1193                         break;
1194                 case BTRFS_CHUNK_ITEM_KEY:
1195                         print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk));
1196                         break;
1197                 case BTRFS_DEV_ITEM_KEY:
1198                         print_dev_item(l, btrfs_item_ptr(l, i,
1199                                         struct btrfs_dev_item));
1200                         break;
1201                 case BTRFS_DEV_EXTENT_KEY:
1202                         dev_extent = btrfs_item_ptr(l, i,
1203                                                     struct btrfs_dev_extent);
1204                         read_extent_buffer(l, uuid,
1205                                 (unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
1206                                 BTRFS_UUID_SIZE);
1207                         uuid_unparse(uuid, uuid_str);
1208                         printf("\t\tdev extent chunk_tree %llu\n"
1209                                "\t\tchunk objectid %llu chunk offset %llu "
1210                                "length %llu\n"
1211                                "\t\tchunk_tree_uuid %s\n",
1212                                (unsigned long long)
1213                                btrfs_dev_extent_chunk_tree(l, dev_extent),
1214                                (unsigned long long)
1215                                btrfs_dev_extent_chunk_objectid(l, dev_extent),
1216                                (unsigned long long)
1217                                btrfs_dev_extent_chunk_offset(l, dev_extent),
1218                                (unsigned long long)
1219                                btrfs_dev_extent_length(l, dev_extent),
1220                                uuid_str);
1221                         break;
1222                 case BTRFS_QGROUP_STATUS_KEY:
1223                         qg_status = btrfs_item_ptr(l, i,
1224                                         struct btrfs_qgroup_status_item);
1225                         memset(flags_str, 0, sizeof(flags_str));
1226                         qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status),
1227                                         flags_str);
1228                         printf("\t\tversion %llu generation %llu flags %s "
1229                                 "scan %lld\n",
1230                                 (unsigned long long)
1231                                 btrfs_qgroup_status_version(l, qg_status),
1232                                 (unsigned long long)
1233                                 btrfs_qgroup_status_generation(l, qg_status),
1234                                 flags_str,
1235                                 (unsigned long long)
1236                                 btrfs_qgroup_status_rescan(l, qg_status));
1237                         break;
1238                 case BTRFS_QGROUP_RELATION_KEY:
1239                         break;
1240                 case BTRFS_QGROUP_INFO_KEY:
1241                         qg_info = btrfs_item_ptr(l, i,
1242                                                  struct btrfs_qgroup_info_item);
1243                         printf("\t\tgeneration %llu\n"
1244                              "\t\treferenced %llu referenced compressed %llu\n"
1245                              "\t\texclusive %llu exclusive compressed %llu\n",
1246                                (unsigned long long)
1247                                btrfs_qgroup_info_generation(l, qg_info),
1248                                (unsigned long long)
1249                                btrfs_qgroup_info_referenced(l, qg_info),
1250                                (unsigned long long)
1251                                btrfs_qgroup_info_referenced_compressed(l,
1252                                                                        qg_info),
1253                                (unsigned long long)
1254                                btrfs_qgroup_info_exclusive(l, qg_info),
1255                                (unsigned long long)
1256                                btrfs_qgroup_info_exclusive_compressed(l,
1257                                                                       qg_info));
1258                         break;
1259                 case BTRFS_QGROUP_LIMIT_KEY:
1260                         qg_limit = btrfs_item_ptr(l, i,
1261                                          struct btrfs_qgroup_limit_item);
1262                         printf("\t\tflags %llx\n"
1263                              "\t\tmax referenced %lld max exclusive %lld\n"
1264                              "\t\trsv referenced %lld rsv exclusive %lld\n",
1265                                (unsigned long long)
1266                                btrfs_qgroup_limit_flags(l, qg_limit),
1267                                (long long)
1268                                btrfs_qgroup_limit_max_referenced(l, qg_limit),
1269                                (long long)
1270                                btrfs_qgroup_limit_max_exclusive(l, qg_limit),
1271                                (long long)
1272                                btrfs_qgroup_limit_rsv_referenced(l, qg_limit),
1273                                (long long)
1274                                btrfs_qgroup_limit_rsv_exclusive(l, qg_limit));
1275                         break;
1276                 case BTRFS_UUID_KEY_SUBVOL:
1277                 case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
1278                         print_uuid_item(l, btrfs_item_ptr_offset(l, i),
1279                                         btrfs_item_size_nr(l, i));
1280                         break;
1281                 case BTRFS_STRING_ITEM_KEY:
1282                         /* dirty, but it's simple */
1283                         str = l->data + btrfs_item_ptr_offset(l, i);
1284                         printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str);
1285                         break;
1286                 case BTRFS_PERSISTENT_ITEM_KEY:
1287                         printf("\t\tpersistent item objectid ");
1288                         print_objectid(stdout, objectid, BTRFS_PERSISTENT_ITEM_KEY);
1289                         printf(" offset %llu\n", (unsigned long long)offset);
1290                         switch (objectid) {
1291                         case BTRFS_DEV_STATS_OBJECTID:
1292                                 print_dev_stats(l, btrfs_item_ptr(l, i,
1293                                                 struct btrfs_dev_stats_item),
1294                                                 btrfs_item_size(l, item));
1295                                 break;
1296                         default:
1297                                 printf("\t\tunknown persistent item objectid %llu\n",
1298                                                 objectid);
1299                         }
1300                         break;
1301                 case BTRFS_TEMPORARY_ITEM_KEY:
1302                         printf("\t\ttemporary item objectid ");
1303                         print_objectid(stdout, objectid, BTRFS_TEMPORARY_ITEM_KEY);
1304                         printf(" offset %llu\n", (unsigned long long)offset);
1305                         switch (objectid) {
1306                         case BTRFS_BALANCE_OBJECTID:
1307                                 print_balance_item(l, btrfs_item_ptr(l, i,
1308                                         struct btrfs_balance_item));
1309                                 break;
1310                         default:
1311                                 printf("\t\tunknown temporary item objectid %llu\n",
1312                                                 objectid);
1313                         }
1314                         break;
1315                 };
1316                 fflush(stdout);
1317         }
1318 }
1319
1320 void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow)
1321 {
1322         int i;
1323         u32 nr;
1324         u32 size;
1325         struct btrfs_disk_key disk_key;
1326         struct btrfs_key key;
1327         struct extent_buffer *next;
1328
1329         if (!eb)
1330                 return;
1331         nr = btrfs_header_nritems(eb);
1332         if (btrfs_is_leaf(eb)) {
1333                 btrfs_print_leaf(root, eb);
1334                 return;
1335         }
1336         printf("node %llu level %d items %d free %u generation %llu owner %llu\n",
1337                (unsigned long long)eb->start,
1338                 btrfs_header_level(eb), nr,
1339                 (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr,
1340                 (unsigned long long)btrfs_header_generation(eb),
1341                 (unsigned long long)btrfs_header_owner(eb));
1342         print_uuids(eb);
1343         fflush(stdout);
1344         size = root->nodesize;
1345         for (i = 0; i < nr; i++) {
1346                 u64 blocknr = btrfs_node_blockptr(eb, i);
1347                 btrfs_node_key(eb, &disk_key, i);
1348                 btrfs_disk_key_to_cpu(&key, &disk_key);
1349                 printf("\t");
1350                 btrfs_print_key(&disk_key);
1351                 printf(" block %llu (%llu) gen %llu\n",
1352                        (unsigned long long)blocknr,
1353                        (unsigned long long)blocknr / size,
1354                        (unsigned long long)btrfs_node_ptr_generation(eb, i));
1355                 fflush(stdout);
1356         }
1357         if (!follow)
1358                 return;
1359
1360         for (i = 0; i < nr; i++) {
1361                 next = read_tree_block(root, btrfs_node_blockptr(eb, i), size,
1362                                 btrfs_node_ptr_generation(eb, i));
1363                 if (!extent_buffer_uptodate(next)) {
1364                         fprintf(stderr, "failed to read %llu in tree %llu\n",
1365                                 (unsigned long long)btrfs_node_blockptr(eb, i),
1366                                 (unsigned long long)btrfs_header_owner(eb));
1367                         continue;
1368                 }
1369                 if (btrfs_is_leaf(next) && btrfs_header_level(eb) != 1) {
1370                         warning(
1371         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1372                                 i, btrfs_header_level(next),
1373                                 btrfs_header_level(eb));
1374                         goto out;
1375                 }
1376                 if (btrfs_header_level(next) != btrfs_header_level(eb) - 1) {
1377                         warning(
1378         "eb corrupted: item %d eb level %d next level %d, skipping the rest",
1379                                 i, btrfs_header_level(next),
1380                                 btrfs_header_level(eb));
1381                         goto out;
1382                 }
1383                 btrfs_print_tree(root, next, 1);
1384                 free_extent_buffer(next);
1385         }
1386
1387         return;
1388
1389 out:
1390         free_extent_buffer(next);
1391 }