diff options
Diffstat (limited to 'print-tree.c')
| -rw-r--r-- | print-tree.c | 1137 |
1 files changed, 1137 insertions, 0 deletions
diff --git a/print-tree.c b/print-tree.c new file mode 100644 index 00000000..6704ff68 --- /dev/null +++ b/print-tree.c @@ -0,0 +1,1137 @@ +/* + * Copyright (C) 2007 Oracle. All rights reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public + * License v2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public + * License along with this program; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 021110-1307, USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <uuid/uuid.h> +#include "kerncompat.h" +#include "radix-tree.h" +#include "ctree.h" +#include "disk-io.h" +#include "print-tree.h" +#include "utils.h" + + +static void print_dir_item_type(struct extent_buffer *eb, + struct btrfs_dir_item *di) +{ + u8 type = btrfs_dir_type(eb, di); + + switch (type) { + case BTRFS_FT_REG_FILE: + printf("FILE"); + break; + case BTRFS_FT_DIR: + printf("DIR"); + break; + case BTRFS_FT_CHRDEV: + printf("CHRDEV"); + break; + case BTRFS_FT_BLKDEV: + printf("BLKDEV"); + break; + case BTRFS_FT_FIFO: + printf("FIFO"); + break; + case BTRFS_FT_SOCK: + printf("SOCK"); + break; + case BTRFS_FT_SYMLINK: + printf("SYMLINK"); + break; + case BTRFS_FT_XATTR: + printf("XATTR"); + break; + default: + printf("%u", type); + } +} + +static int print_dir_item(struct extent_buffer *eb, struct btrfs_item *item, + struct btrfs_dir_item *di) +{ + u32 total; + u32 cur = 0; + u32 len; + u32 name_len; + u32 data_len; + char namebuf[BTRFS_NAME_LEN]; + struct btrfs_disk_key location; + + total = btrfs_item_size(eb, item); + while(cur < total) { + btrfs_dir_item_key(eb, di, &location); + printf("\t\tlocation "); + btrfs_print_key(&location); + printf(" type "); + print_dir_item_type(eb, di); + printf("\n"); + name_len = btrfs_dir_name_len(eb, di); + data_len = btrfs_dir_data_len(eb, di); + len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf); + read_extent_buffer(eb, namebuf, (unsigned long)(di + 1), len); + printf("\t\tnamelen %u datalen %u name: %.*s\n", + name_len, data_len, len, namebuf); + if (data_len) { + len = (data_len <= sizeof(namebuf))? data_len: sizeof(namebuf); + read_extent_buffer(eb, namebuf, + (unsigned long)(di + 1) + name_len, len); + printf("\t\tdata %.*s\n", len, namebuf); + } + len = sizeof(*di) + name_len + data_len; + di = (struct btrfs_dir_item *)((char *)di + len); + cur += len; + } + return 0; +} + +static int print_inode_extref_item(struct extent_buffer *eb, + struct btrfs_item *item, + struct btrfs_inode_extref *extref) +{ + u32 total; + u32 cur = 0; + u32 len; + u32 name_len = 0; + u64 index = 0; + u64 parent_objid; + char namebuf[BTRFS_NAME_LEN]; + + total = btrfs_item_size(eb, item); + + while (cur < total) { + index = btrfs_inode_extref_index(eb, extref); + name_len = btrfs_inode_extref_name_len(eb, extref); + parent_objid = btrfs_inode_extref_parent(eb, extref); + + len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf); + + read_extent_buffer(eb, namebuf, (unsigned long)(extref->name), len); + + printf("\t\tinode extref index %llu parent %llu namelen %u " + "name: %.*s\n", + (unsigned long long)index, + (unsigned long long)parent_objid, + name_len, len, namebuf); + + len = sizeof(*extref) + name_len; + extref = (struct btrfs_inode_extref *)((char *)extref + len); + cur += len; + } + return 0; +} + +static int print_inode_ref_item(struct extent_buffer *eb, struct btrfs_item *item, + struct btrfs_inode_ref *ref) +{ + u32 total; + u32 cur = 0; + u32 len; + u32 name_len; + u64 index; + char namebuf[BTRFS_NAME_LEN]; + total = btrfs_item_size(eb, item); + while(cur < total) { + name_len = btrfs_inode_ref_name_len(eb, ref); + index = btrfs_inode_ref_index(eb, ref); + len = (name_len <= sizeof(namebuf))? name_len: sizeof(namebuf); + read_extent_buffer(eb, namebuf, (unsigned long)(ref + 1), len); + printf("\t\tinode ref index %llu namelen %u name: %.*s\n", + (unsigned long long)index, name_len, len, namebuf); + len = sizeof(*ref) + name_len; + ref = (struct btrfs_inode_ref *)((char *)ref + len); + cur += len; + } + return 0; +} + +/* Caller should ensure sizeof(*ret)>=21 "DATA|METADATA|RAID10" */ +static void bg_flags_to_str(u64 flags, char *ret) +{ + int empty = 1; + + if (flags & BTRFS_BLOCK_GROUP_DATA) { + empty = 0; + strcpy(ret, "DATA"); + } + if (flags & BTRFS_BLOCK_GROUP_METADATA) { + if (!empty) + strcat(ret, "|"); + strcat(ret, "METADATA"); + } + if (flags & BTRFS_BLOCK_GROUP_SYSTEM) { + if (!empty) + strcat(ret, "|"); + strcat(ret, "SYSTEM"); + } + switch (flags & BTRFS_BLOCK_GROUP_PROFILE_MASK) { + case BTRFS_BLOCK_GROUP_RAID0: + strcat(ret, "|RAID0"); + break; + case BTRFS_BLOCK_GROUP_RAID1: + strcat(ret, "|RAID1"); + break; + case BTRFS_BLOCK_GROUP_DUP: + strcat(ret, "|DUP"); + break; + case BTRFS_BLOCK_GROUP_RAID10: + strcat(ret, "|RAID10"); + break; + case BTRFS_BLOCK_GROUP_RAID5: + strcat(ret, "|RAID5"); + break; + case BTRFS_BLOCK_GROUP_RAID6: + strcat(ret, "|RAID6"); + break; + default: + break; + } +} + +/* Caller should ensure sizeof(*ret)>= 26 "OFF|SCANNING|INCONSISTENT" */ +static void qgroup_flags_to_str(u64 flags, char *ret) +{ + if (flags & BTRFS_QGROUP_STATUS_FLAG_ON) + strcpy(ret, "ON"); + else + strcpy(ret, "OFF"); + + if (flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN) + strcat(ret, "|SCANNING"); + if (flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT) + strcat(ret, "|INCONSISTENT"); +} + +void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk) +{ + int num_stripes = btrfs_chunk_num_stripes(eb, chunk); + int i; + char chunk_flags_str[32] = {0}; + + bg_flags_to_str(btrfs_chunk_type(eb, chunk), chunk_flags_str); + printf("\t\tchunk length %llu owner %llu stripe_len %llu\n", + (unsigned long long)btrfs_chunk_length(eb, chunk), + (unsigned long long)btrfs_chunk_owner(eb, chunk), + (unsigned long long)btrfs_chunk_stripe_len(eb, chunk)); + printf("\t\ttype %s num_stripes %d\n", + chunk_flags_str, num_stripes); + for (i = 0 ; i < num_stripes ; i++) { + unsigned char dev_uuid[BTRFS_UUID_SIZE]; + char str_dev_uuid[BTRFS_UUID_UNPARSED_SIZE]; + + read_extent_buffer(eb, dev_uuid, + (unsigned long)btrfs_stripe_dev_uuid_nr(chunk, i), + BTRFS_UUID_SIZE); + uuid_unparse(dev_uuid, str_dev_uuid); + printf("\t\t\tstripe %d devid %llu offset %llu\n", i, + (unsigned long long)btrfs_stripe_devid_nr(eb, chunk, i), + (unsigned long long)btrfs_stripe_offset_nr(eb, chunk, i)); + printf("\t\t\tdev uuid: %s\n", str_dev_uuid); + } +} + +static void print_dev_item(struct extent_buffer *eb, + struct btrfs_dev_item *dev_item) +{ + char disk_uuid_c[BTRFS_UUID_UNPARSED_SIZE]; + u8 disk_uuid[BTRFS_UUID_SIZE]; + + read_extent_buffer(eb, disk_uuid, + (unsigned long)btrfs_device_uuid(dev_item), + BTRFS_UUID_SIZE); + uuid_unparse(disk_uuid, disk_uuid_c); + printf("\t\tdev item devid %llu " + "total_bytes %llu bytes used %Lu\n" + "\t\tdev uuid %s\n", + (unsigned long long)btrfs_device_id(eb, dev_item), + (unsigned long long)btrfs_device_total_bytes(eb, dev_item), + (unsigned long long)btrfs_device_bytes_used(eb, dev_item), + disk_uuid_c); +} + +static void print_uuids(struct extent_buffer *eb) +{ + char fs_uuid[BTRFS_UUID_UNPARSED_SIZE]; + char chunk_uuid[BTRFS_UUID_UNPARSED_SIZE]; + u8 disk_uuid[BTRFS_UUID_SIZE]; + + read_extent_buffer(eb, disk_uuid, btrfs_header_fsid(), + BTRFS_FSID_SIZE); + + fs_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0'; + uuid_unparse(disk_uuid, fs_uuid); + + read_extent_buffer(eb, disk_uuid, + btrfs_header_chunk_tree_uuid(eb), + BTRFS_UUID_SIZE); + + chunk_uuid[BTRFS_UUID_UNPARSED_SIZE - 1] = '\0'; + uuid_unparse(disk_uuid, chunk_uuid); + printf("fs uuid %s\nchunk uuid %s\n", fs_uuid, chunk_uuid); +} + +static void print_file_extent_item(struct extent_buffer *eb, + struct btrfs_item *item, + int slot, + struct btrfs_file_extent_item *fi) +{ + int extent_type = btrfs_file_extent_type(eb, fi); + + if (extent_type == BTRFS_FILE_EXTENT_INLINE) { + printf("\t\tinline extent data size %u " + "ram %u compress %d\n", + btrfs_file_extent_inline_item_len(eb, item), + btrfs_file_extent_inline_len(eb, slot, fi), + btrfs_file_extent_compression(eb, fi)); + return; + } + if (extent_type == BTRFS_FILE_EXTENT_PREALLOC) { + printf("\t\tprealloc data disk byte %llu nr %llu\n", + (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi), + (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi)); + printf("\t\tprealloc data offset %llu nr %llu\n", + (unsigned long long)btrfs_file_extent_offset(eb, fi), + (unsigned long long)btrfs_file_extent_num_bytes(eb, fi)); + return; + } + printf("\t\textent data disk byte %llu nr %llu\n", + (unsigned long long)btrfs_file_extent_disk_bytenr(eb, fi), + (unsigned long long)btrfs_file_extent_disk_num_bytes(eb, fi)); + printf("\t\textent data offset %llu nr %llu ram %llu\n", + (unsigned long long)btrfs_file_extent_offset(eb, fi), + (unsigned long long)btrfs_file_extent_num_bytes(eb, fi), + (unsigned long long)btrfs_file_extent_ram_bytes(eb, fi)); + printf("\t\textent compression %d\n", + btrfs_file_extent_compression(eb, fi)); +} + +/* Caller should ensure sizeof(*ret) >= 16("DATA|TREE_BLOCK") */ +static void extent_flags_to_str(u64 flags, char *ret) +{ + int empty = 1; + + if (flags & BTRFS_EXTENT_FLAG_DATA) { + empty = 0; + strcpy(ret, "DATA"); + } + if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) { + if (!empty) { + empty = 0; + strcat(ret, "|"); + } + strcat(ret, "TREE_BLOCK"); + } + if (flags & BTRFS_BLOCK_FLAG_FULL_BACKREF) { + strcat(ret, "|"); + strcat(ret, "FULL_BACKREF"); + } +} + +void print_extent_item(struct extent_buffer *eb, int slot, int metadata) +{ + struct btrfs_extent_item *ei; + struct btrfs_extent_inline_ref *iref; + struct btrfs_extent_data_ref *dref; + struct btrfs_shared_data_ref *sref; + struct btrfs_disk_key key; + unsigned long end; + unsigned long ptr; + int type; + u32 item_size = btrfs_item_size_nr(eb, slot); + u64 flags; + u64 offset; + char flags_str[32] = {0}; + + if (item_size < sizeof(*ei)) { +#ifdef BTRFS_COMPAT_EXTENT_TREE_V0 + struct btrfs_extent_item_v0 *ei0; + BUG_ON(item_size != sizeof(*ei0)); + ei0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_item_v0); + printf("\t\textent refs %u\n", + btrfs_extent_refs_v0(eb, ei0)); + return; +#else + BUG(); +#endif + } + + ei = btrfs_item_ptr(eb, slot, struct btrfs_extent_item); + flags = btrfs_extent_flags(eb, ei); + extent_flags_to_str(flags, flags_str); + + printf("\t\textent refs %llu gen %llu flags %s\n", + (unsigned long long)btrfs_extent_refs(eb, ei), + (unsigned long long)btrfs_extent_generation(eb, ei), + flags_str); + + if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK && !metadata) { + struct btrfs_tree_block_info *info; + info = (struct btrfs_tree_block_info *)(ei + 1); + btrfs_tree_block_key(eb, info, &key); + printf("\t\ttree block "); + btrfs_print_key(&key); + printf(" level %d\n", btrfs_tree_block_level(eb, info)); + iref = (struct btrfs_extent_inline_ref *)(info + 1); + } else if (metadata) { + struct btrfs_key tmp; + + btrfs_item_key_to_cpu(eb, &tmp, slot); + printf("\t\ttree block skinny level %d\n", (int)tmp.offset); + iref = (struct btrfs_extent_inline_ref *)(ei + 1); + } else{ + iref = (struct btrfs_extent_inline_ref *)(ei + 1); + } + + ptr = (unsigned long)iref; + end = (unsigned long)ei + item_size; + while (ptr < end) { + iref = (struct btrfs_extent_inline_ref *)ptr; + type = btrfs_extent_inline_ref_type(eb, iref); + offset = btrfs_extent_inline_ref_offset(eb, iref); + switch (type) { + case BTRFS_TREE_BLOCK_REF_KEY: + printf("\t\ttree block backref root %llu\n", + (unsigned long long)offset); + break; + case BTRFS_SHARED_BLOCK_REF_KEY: + printf("\t\tshared block backref parent %llu\n", + (unsigned long long)offset); + break; + case BTRFS_EXTENT_DATA_REF_KEY: + dref = (struct btrfs_extent_data_ref *)(&iref->offset); + printf("\t\textent data backref root %llu " + "objectid %llu offset %llu count %u\n", + (unsigned long long)btrfs_extent_data_ref_root(eb, dref), + (unsigned long long)btrfs_extent_data_ref_objectid(eb, dref), + (unsigned long long)btrfs_extent_data_ref_offset(eb, dref), + btrfs_extent_data_ref_count(eb, dref)); + break; + case BTRFS_SHARED_DATA_REF_KEY: + sref = (struct btrfs_shared_data_ref *)(iref + 1); + printf("\t\tshared data backref parent %llu count %u\n", + (unsigned long long)offset, + btrfs_shared_data_ref_count(eb, sref)); + break; + default: + return; + } + ptr += btrfs_extent_inline_ref_size(type); + } + WARN_ON(ptr > end); +} + +#ifdef BTRFS_COMPAT_EXTENT_TREE_V0 +static void print_extent_ref_v0(struct extent_buffer *eb, int slot) +{ + struct btrfs_extent_ref_v0 *ref0; + + ref0 = btrfs_item_ptr(eb, slot, struct btrfs_extent_ref_v0); + printf("\t\textent back ref root %llu gen %llu " + "owner %llu num_refs %lu\n", + (unsigned long long)btrfs_ref_root_v0(eb, ref0), + (unsigned long long)btrfs_ref_generation_v0(eb, ref0), + (unsigned long long)btrfs_ref_objectid_v0(eb, ref0), + (unsigned long)btrfs_ref_count_v0(eb, ref0)); +} +#endif + +static void print_root_ref(struct extent_buffer *leaf, int slot, char *tag) +{ + struct btrfs_root_ref *ref; + char namebuf[BTRFS_NAME_LEN]; + int namelen; + + ref = btrfs_item_ptr(leaf, slot, struct btrfs_root_ref); + namelen = btrfs_root_ref_name_len(leaf, ref); + read_extent_buffer(leaf, namebuf, (unsigned long)(ref + 1), namelen); + printf("\t\troot %s key dirid %llu sequence %llu name %.*s\n", tag, + (unsigned long long)btrfs_root_ref_dirid(leaf, ref), + (unsigned long long)btrfs_root_ref_sequence(leaf, ref), + namelen, namebuf); +} + +static int count_bytes(void *buf, int len, char b) +{ + int cnt = 0; + int i; + for (i = 0; i < len; i++) { + if (((char*)buf)[i] == b) + cnt++; + } + return cnt; +} + +static void print_root(struct extent_buffer *leaf, int slot) +{ + struct btrfs_root_item *ri; + struct btrfs_root_item root_item; + int len; + char uuid_str[BTRFS_UUID_UNPARSED_SIZE]; + + ri = btrfs_item_ptr(leaf, slot, struct btrfs_root_item); + len = btrfs_item_size_nr(leaf, slot); + + memset(&root_item, 0, sizeof(root_item)); + read_extent_buffer(leaf, &root_item, (unsigned long)ri, len); + + printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %llu lastsnap %llu\n", + (unsigned long long)btrfs_root_bytenr(&root_item), + btrfs_root_level(&root_item), + (unsigned long long)btrfs_root_dirid(&root_item), + btrfs_root_refs(&root_item), + (unsigned long long)btrfs_root_generation(&root_item), + (unsigned long long)btrfs_root_last_snapshot(&root_item)); + + if (root_item.generation == root_item.generation_v2) { + uuid_unparse(root_item.uuid, uuid_str); + printf("\t\tuuid %s\n", uuid_str); + if (count_bytes(root_item.parent_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) { + uuid_unparse(root_item.parent_uuid, uuid_str); + printf("\t\tparent_uuid %s\n", uuid_str); + } + if (count_bytes(root_item.received_uuid, BTRFS_UUID_SIZE, 0) != BTRFS_UUID_SIZE) { + uuid_unparse(root_item.received_uuid, uuid_str); + printf("\t\treceived_uuid %s\n", uuid_str); + } + if (root_item.ctransid) { + printf("\t\tctransid %llu otransid %llu stransid %llu rtransid %llu\n", + btrfs_root_ctransid(&root_item), + btrfs_root_otransid(&root_item), + btrfs_root_stransid(&root_item), + btrfs_root_rtransid(&root_item)); + } + } + if (btrfs_root_refs(&root_item) == 0) { + struct btrfs_key drop_key; + btrfs_disk_key_to_cpu(&drop_key, + &root_item.drop_progress); + printf("\t\tdrop "); + btrfs_print_key(&root_item.drop_progress); + printf(" level %d\n", root_item.drop_level); + } +} + +static void print_free_space_header(struct extent_buffer *leaf, int slot) +{ + struct btrfs_free_space_header *header; + struct btrfs_disk_key location; + + header = btrfs_item_ptr(leaf, slot, struct btrfs_free_space_header); + btrfs_free_space_key(leaf, header, &location); + printf("\t\tlocation "); + btrfs_print_key(&location); + printf("\n"); + printf("\t\tcache generation %llu entries %llu bitmaps %llu\n", + (unsigned long long)btrfs_free_space_generation(leaf, header), + (unsigned long long)btrfs_free_space_entries(leaf, header), + (unsigned long long)btrfs_free_space_bitmaps(leaf, header)); +} + +static void print_key_type(u64 objectid, u8 type) +{ + if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) { + printf("UNTYPED"); + return; + } + + switch (type) { + case BTRFS_INODE_ITEM_KEY: + printf("INODE_ITEM"); + break; + case BTRFS_INODE_REF_KEY: + printf("INODE_REF"); + break; + case BTRFS_INODE_EXTREF_KEY: + printf("INODE_EXTREF"); + break; + case BTRFS_DIR_ITEM_KEY: + printf("DIR_ITEM"); + break; + case BTRFS_DIR_INDEX_KEY: + printf("DIR_INDEX"); + break; + case BTRFS_DIR_LOG_ITEM_KEY: + printf("DIR_LOG_ITEM"); + break; + case BTRFS_DIR_LOG_INDEX_KEY: + printf("DIR_LOG_INDEX"); + break; + case BTRFS_XATTR_ITEM_KEY: + printf("XATTR_ITEM"); + break; + case BTRFS_ORPHAN_ITEM_KEY: + printf("ORPHAN_ITEM"); + break; + case BTRFS_ROOT_ITEM_KEY: + printf("ROOT_ITEM"); + break; + case BTRFS_ROOT_REF_KEY: + printf("ROOT_REF"); + break; + case BTRFS_ROOT_BACKREF_KEY: + printf("ROOT_BACKREF"); + break; + case BTRFS_EXTENT_ITEM_KEY: + printf("EXTENT_ITEM"); + break; + case BTRFS_METADATA_ITEM_KEY: + printf("METADATA_ITEM"); + break; + case BTRFS_TREE_BLOCK_REF_KEY: + printf("TREE_BLOCK_REF"); + break; + case BTRFS_SHARED_BLOCK_REF_KEY: + printf("SHARED_BLOCK_REF"); + break; + case BTRFS_EXTENT_DATA_REF_KEY: + printf("EXTENT_DATA_REF"); + break; + case BTRFS_SHARED_DATA_REF_KEY: + printf("SHARED_DATA_REF"); + break; + case BTRFS_EXTENT_REF_V0_KEY: + printf("EXTENT_REF_V0"); + break; + case BTRFS_CSUM_ITEM_KEY: + printf("CSUM_ITEM"); + break; + case BTRFS_EXTENT_CSUM_KEY: + printf("EXTENT_CSUM"); + break; + case BTRFS_EXTENT_DATA_KEY: + printf("EXTENT_DATA"); + break; + case BTRFS_BLOCK_GROUP_ITEM_KEY: + printf("BLOCK_GROUP_ITEM"); + break; + case BTRFS_FREE_SPACE_INFO_KEY: + printf("FREE_SPACE_INFO"); + break; + case BTRFS_FREE_SPACE_EXTENT_KEY: + printf("FREE_SPACE_EXTENT"); + break; + case BTRFS_FREE_SPACE_BITMAP_KEY: + printf("FREE_SPACE_BITMAP"); + break; + case BTRFS_CHUNK_ITEM_KEY: + printf("CHUNK_ITEM"); + break; + case BTRFS_DEV_ITEM_KEY: + printf("DEV_ITEM"); + break; + case BTRFS_DEV_EXTENT_KEY: + printf("DEV_EXTENT"); + break; + case BTRFS_BALANCE_ITEM_KEY: + printf("BALANCE_ITEM"); + break; + case BTRFS_DEV_REPLACE_KEY: + printf("DEV_REPLACE"); + break; + case BTRFS_STRING_ITEM_KEY: + printf("STRING_ITEM"); + break; + case BTRFS_QGROUP_STATUS_KEY: + printf("QGROUP_STATUS"); + break; + case BTRFS_QGROUP_RELATION_KEY: + printf("QGROUP_RELATION"); + break; + case BTRFS_QGROUP_INFO_KEY: + printf("QGROUP_INFO"); + break; + case BTRFS_QGROUP_LIMIT_KEY: + printf("QGROUP_LIMIT"); + break; + case BTRFS_DEV_STATS_KEY: + printf("DEV_STATS"); + break; + case BTRFS_UUID_KEY_SUBVOL: + printf("UUID_KEY_SUBVOL"); + break; + case BTRFS_UUID_KEY_RECEIVED_SUBVOL: + printf("UUID_KEY_RECEIVED_SUBVOL"); + break; + default: + printf("UNKNOWN.%d", type); + }; +} + +static void print_objectid(u64 objectid, u8 type) +{ + switch (type) { + case BTRFS_DEV_EXTENT_KEY: + printf("%llu", (unsigned long long)objectid); /* device id */ + return; + case BTRFS_QGROUP_RELATION_KEY: + printf("%llu/%llu", btrfs_qgroup_level(objectid), + btrfs_qgroup_subvid(objectid)); + return; + case BTRFS_UUID_KEY_SUBVOL: + case BTRFS_UUID_KEY_RECEIVED_SUBVOL: + printf("0x%016llx", (unsigned long long)objectid); + return; + } + + switch (objectid) { + case BTRFS_ROOT_TREE_OBJECTID: + if (type == BTRFS_DEV_ITEM_KEY) + printf("DEV_ITEMS"); + else + printf("ROOT_TREE"); + break; + case BTRFS_EXTENT_TREE_OBJECTID: + printf("EXTENT_TREE"); + break; + case BTRFS_CHUNK_TREE_OBJECTID: + printf("CHUNK_TREE"); + break; + case BTRFS_DEV_TREE_OBJECTID: + printf("DEV_TREE"); + break; + case BTRFS_FS_TREE_OBJECTID: + printf("FS_TREE"); + break; + case BTRFS_ROOT_TREE_DIR_OBJECTID: + printf("ROOT_TREE_DIR"); + break; + case BTRFS_CSUM_TREE_OBJECTID: + printf("CSUM_TREE"); + break; + case BTRFS_BALANCE_OBJECTID: + printf("BALANCE"); + break; + case BTRFS_ORPHAN_OBJECTID: + printf("ORPHAN"); + break; + case BTRFS_TREE_LOG_OBJECTID: + printf("TREE_LOG"); + break; + case BTRFS_TREE_LOG_FIXUP_OBJECTID: + printf("LOG_FIXUP"); + break; + case BTRFS_TREE_RELOC_OBJECTID: + printf("TREE_RELOC"); + break; + case BTRFS_DATA_RELOC_TREE_OBJECTID: + printf("DATA_RELOC_TREE"); + break; + case BTRFS_EXTENT_CSUM_OBJECTID: + printf("EXTENT_CSUM"); + break; + case BTRFS_FREE_SPACE_OBJECTID: + printf("FREE_SPACE"); + break; + case BTRFS_FREE_INO_OBJECTID: + printf("FREE_INO"); + break; + case BTRFS_QUOTA_TREE_OBJECTID: + printf("QUOTA_TREE"); + break; + case BTRFS_UUID_TREE_OBJECTID: + printf("UUID_TREE"); + break; + case BTRFS_FREE_SPACE_TREE_OBJECTID: + printf("FREE_SPACE_TREE"); + break; + case BTRFS_MULTIPLE_OBJECTIDS: + printf("MULTIPLE"); + break; + case (u64)-1: + printf("-1"); + break; + case BTRFS_FIRST_CHUNK_TREE_OBJECTID: + if (type == BTRFS_CHUNK_ITEM_KEY) { + printf("FIRST_CHUNK_TREE"); + break; + } + /* fall-thru */ + default: + printf("%llu", (unsigned long long)objectid); + } +} + +void btrfs_print_key(struct btrfs_disk_key *disk_key) +{ + u64 objectid = btrfs_disk_key_objectid(disk_key); + u8 type = btrfs_disk_key_type(disk_key); + u64 offset = btrfs_disk_key_offset(disk_key); + + printf("key ("); + print_objectid(objectid, type); + printf(" "); + print_key_type(objectid, type); + switch (type) { + case BTRFS_QGROUP_RELATION_KEY: + case BTRFS_QGROUP_INFO_KEY: + case BTRFS_QGROUP_LIMIT_KEY: + printf(" %llu/%llu)", btrfs_qgroup_level(offset), + btrfs_qgroup_subvid(offset)); + break; + case BTRFS_UUID_KEY_SUBVOL: + case BTRFS_UUID_KEY_RECEIVED_SUBVOL: + printf(" 0x%016llx)", (unsigned long long)offset); + break; + default: + if (offset == (u64)-1) + printf(" -1)"); + else + printf(" %llu)", (unsigned long long)offset); + break; + } +} + +static void print_uuid_item(struct extent_buffer *l, unsigned long offset, + u32 item_size) +{ + if (item_size & (sizeof(u64) - 1)) { + printf("btrfs: uuid item with illegal size %lu!\n", + (unsigned long)item_size); + return; + } + while (item_size) { + __le64 subvol_id; + + read_extent_buffer(l, &subvol_id, offset, sizeof(u64)); + printf("\t\tsubvol_id %llu\n", + (unsigned long long)le64_to_cpu(subvol_id)); + item_size -= sizeof(u64); + offset += sizeof(u64); + } +} + +void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l) +{ + int i; + char *str; + struct btrfs_item *item; + struct btrfs_dir_item *di; + struct btrfs_inode_item *ii; + struct btrfs_file_extent_item *fi; + struct btrfs_block_group_item *bi; + struct btrfs_extent_data_ref *dref; + struct btrfs_shared_data_ref *sref; + struct btrfs_inode_ref *iref; + struct btrfs_inode_extref *iref2; + struct btrfs_dev_extent *dev_extent; + struct btrfs_disk_key disk_key; + struct btrfs_block_group_item bg_item; + struct btrfs_free_space_info *free_info; + struct btrfs_dir_log_item *dlog; + struct btrfs_qgroup_info_item *qg_info; + struct btrfs_qgroup_limit_item *qg_limit; + struct btrfs_qgroup_status_item *qg_status; + u32 nr = btrfs_header_nritems(l); + u64 objectid; + u32 type; + char flags_str[32]; + + printf("leaf %llu items %d free space %d generation %llu owner %llu\n", + (unsigned long long)btrfs_header_bytenr(l), nr, + btrfs_leaf_free_space(root, l), + (unsigned long long)btrfs_header_generation(l), + (unsigned long long)btrfs_header_owner(l)); + print_uuids(l); + fflush(stdout); + for (i = 0 ; i < nr ; i++) { + item = btrfs_item_nr(i); + btrfs_item_key(l, &disk_key, i); + objectid = btrfs_disk_key_objectid(&disk_key); + type = btrfs_disk_key_type(&disk_key); + printf("\titem %d ", i); + btrfs_print_key(&disk_key); + printf(" itemoff %d itemsize %d\n", + btrfs_item_offset(l, item), + btrfs_item_size(l, item)); + + if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID) + print_free_space_header(l, i); + + switch (type) { + case BTRFS_INODE_ITEM_KEY: + ii = btrfs_item_ptr(l, i, struct btrfs_inode_item); + printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n" + "\t\tblock group %llu mode %o links %u uid %u gid %u\n" + "\t\trdev %llu flags 0x%llx\n", + (unsigned long long)btrfs_inode_generation(l, ii), + (unsigned long long)btrfs_inode_transid(l, ii), + (unsigned long long)btrfs_inode_size(l, ii), + (unsigned long long)btrfs_inode_nbytes(l, ii), + (unsigned long long)btrfs_inode_block_group(l,ii), + btrfs_inode_mode(l, ii), + btrfs_inode_nlink(l, ii), + btrfs_inode_uid(l, ii), + btrfs_inode_gid(l, ii), + (unsigned long long)btrfs_inode_rdev(l,ii), + (unsigned long long)btrfs_inode_flags(l,ii)); + break; + case BTRFS_INODE_REF_KEY: + iref = btrfs_item_ptr(l, i, struct btrfs_inode_ref); + print_inode_ref_item(l, item, iref); + break; + case BTRFS_INODE_EXTREF_KEY: + iref2 = btrfs_item_ptr(l, i, struct btrfs_inode_extref); + print_inode_extref_item(l, item, iref2); + break; + case BTRFS_DIR_ITEM_KEY: + case BTRFS_DIR_INDEX_KEY: + case BTRFS_XATTR_ITEM_KEY: + di = btrfs_item_ptr(l, i, struct btrfs_dir_item); + print_dir_item(l, item, di); + break; + case BTRFS_DIR_LOG_INDEX_KEY: + case BTRFS_DIR_LOG_ITEM_KEY: + dlog = btrfs_item_ptr(l, i, struct btrfs_dir_log_item); + printf("\t\tdir log end %Lu\n", + (unsigned long long)btrfs_dir_log_end(l, dlog)); + break; + case BTRFS_ORPHAN_ITEM_KEY: + printf("\t\torphan item\n"); + break; + case BTRFS_ROOT_ITEM_KEY: + print_root(l, i); + break; + case BTRFS_ROOT_REF_KEY: + print_root_ref(l, i, "ref"); + break; + case BTRFS_ROOT_BACKREF_KEY: + print_root_ref(l, i, "backref"); + break; + case BTRFS_EXTENT_ITEM_KEY: + print_extent_item(l, i, 0); + break; + case BTRFS_METADATA_ITEM_KEY: + print_extent_item(l, i, 1); + break; + case BTRFS_TREE_BLOCK_REF_KEY: + printf("\t\ttree block backref\n"); + break; + case BTRFS_SHARED_BLOCK_REF_KEY: + printf("\t\tshared block backref\n"); + break; + case BTRFS_EXTENT_DATA_REF_KEY: + dref = btrfs_item_ptr(l, i, struct btrfs_extent_data_ref); + printf("\t\textent data backref root %llu " + "objectid %llu offset %llu count %u\n", + (unsigned long long)btrfs_extent_data_ref_root(l, dref), + (unsigned long long)btrfs_extent_data_ref_objectid(l, dref), + (unsigned long long)btrfs_extent_data_ref_offset(l, dref), + btrfs_extent_data_ref_count(l, dref)); + break; + case BTRFS_SHARED_DATA_REF_KEY: + sref = btrfs_item_ptr(l, i, struct btrfs_shared_data_ref); + printf("\t\tshared data backref count %u\n", + btrfs_shared_data_ref_count(l, sref)); + break; + case BTRFS_EXTENT_REF_V0_KEY: +#ifdef BTRFS_COMPAT_EXTENT_TREE_V0 + print_extent_ref_v0(l, i); +#else + BUG(); +#endif + break; + case BTRFS_CSUM_ITEM_KEY: + printf("\t\tcsum item\n"); + break; + case BTRFS_EXTENT_CSUM_KEY: + printf("\t\textent csum item\n"); + break; + case BTRFS_EXTENT_DATA_KEY: + fi = btrfs_item_ptr(l, i, + struct btrfs_file_extent_item); + print_file_extent_item(l, item, i, fi); + break; + case BTRFS_BLOCK_GROUP_ITEM_KEY: + bi = btrfs_item_ptr(l, i, + struct btrfs_block_group_item); + read_extent_buffer(l, &bg_item, (unsigned long)bi, + sizeof(bg_item)); + memset(flags_str, 0, sizeof(flags_str)); + bg_flags_to_str(btrfs_block_group_flags(&bg_item), + flags_str); + printf("\t\tblock group used %llu chunk_objectid %llu flags %s\n", + (unsigned long long)btrfs_block_group_used(&bg_item), + (unsigned long long)btrfs_block_group_chunk_objectid(&bg_item), + flags_str); + break; + case BTRFS_FREE_SPACE_INFO_KEY: + free_info = btrfs_item_ptr(l, i, struct btrfs_free_space_info); + printf("\t\tfree space info extent count %u flags %u\n", + (unsigned)btrfs_free_space_extent_count(l, free_info), + (unsigned)btrfs_free_space_flags(l, free_info)); + break; + case BTRFS_FREE_SPACE_EXTENT_KEY: + printf("\t\tfree space extent\n"); + break; + case BTRFS_FREE_SPACE_BITMAP_KEY: + printf("\t\tfree space bitmap\n"); + break; + case BTRFS_CHUNK_ITEM_KEY: + print_chunk(l, btrfs_item_ptr(l, i, struct btrfs_chunk)); + break; + case BTRFS_DEV_ITEM_KEY: + print_dev_item(l, btrfs_item_ptr(l, i, + struct btrfs_dev_item)); + break; + case BTRFS_DEV_EXTENT_KEY: + dev_extent = btrfs_item_ptr(l, i, + struct btrfs_dev_extent); + printf("\t\tdev extent chunk_tree %llu\n" + "\t\tchunk objectid %llu chunk offset %llu " + "length %llu\n", + (unsigned long long) + btrfs_dev_extent_chunk_tree(l, dev_extent), + (unsigned long long) + btrfs_dev_extent_chunk_objectid(l, dev_extent), + (unsigned long long) + btrfs_dev_extent_chunk_offset(l, dev_extent), + (unsigned long long) + btrfs_dev_extent_length(l, dev_extent)); + break; + case BTRFS_QGROUP_STATUS_KEY: + qg_status = btrfs_item_ptr(l, i, + struct btrfs_qgroup_status_item); + memset(flags_str, 0, sizeof(flags_str)); + qgroup_flags_to_str(btrfs_qgroup_status_flags(l, qg_status), + flags_str); + printf("\t\tversion %llu generation %llu flags %s " + "scan %lld\n", + (unsigned long long) + btrfs_qgroup_status_version(l, qg_status), + (unsigned long long) + btrfs_qgroup_status_generation(l, qg_status), + flags_str, + (unsigned long long) + btrfs_qgroup_status_scan(l, qg_status)); + break; + case BTRFS_QGROUP_RELATION_KEY: + break; + case BTRFS_QGROUP_INFO_KEY: + qg_info = btrfs_item_ptr(l, i, + struct btrfs_qgroup_info_item); + printf("\t\tgeneration %llu\n" + "\t\treferenced %llu referenced compressed %llu\n" + "\t\texclusive %llu exclusive compressed %llu\n", + (unsigned long long) + btrfs_qgroup_info_generation(l, qg_info), + (unsigned long long) + btrfs_qgroup_info_referenced(l, qg_info), + (unsigned long long) + btrfs_qgroup_info_referenced_compressed(l, + qg_info), + (unsigned long long) + btrfs_qgroup_info_exclusive(l, qg_info), + (unsigned long long) + btrfs_qgroup_info_exclusive_compressed(l, + qg_info)); + break; + case BTRFS_QGROUP_LIMIT_KEY: + qg_limit = btrfs_item_ptr(l, i, + struct btrfs_qgroup_limit_item); + printf("\t\tflags %llx\n" + "\t\tmax referenced %lld max exclusive %lld\n" + "\t\trsv referenced %lld rsv exclusive %lld\n", + (unsigned long long) + btrfs_qgroup_limit_flags(l, qg_limit), + (long long) + btrfs_qgroup_limit_max_referenced(l, qg_limit), + (long long) + btrfs_qgroup_limit_max_exclusive(l, qg_limit), + (long long) + btrfs_qgroup_limit_rsv_referenced(l, qg_limit), + (long long) + btrfs_qgroup_limit_rsv_exclusive(l, qg_limit)); + break; + case BTRFS_UUID_KEY_SUBVOL: + case BTRFS_UUID_KEY_RECEIVED_SUBVOL: + print_uuid_item(l, btrfs_item_ptr_offset(l, i), + btrfs_item_size_nr(l, i)); + break; + case BTRFS_STRING_ITEM_KEY: + /* dirty, but it's simple */ + str = l->data + btrfs_item_ptr_offset(l, i); + printf("\t\titem data %.*s\n", btrfs_item_size(l, item), str); + break; + case BTRFS_DEV_STATS_KEY: + printf("\t\tdevice stats\n"); + break; + }; + fflush(stdout); + } +} + +void btrfs_print_tree(struct btrfs_root *root, struct extent_buffer *eb, int follow) +{ + int i; + u32 nr; + u32 size; + struct btrfs_disk_key disk_key; + struct btrfs_key key; + + if (!eb) + return; + nr = btrfs_header_nritems(eb); + if (btrfs_is_leaf(eb)) { + btrfs_print_leaf(root, eb); + return; + } + printf("node %llu level %d items %d free %u generation %llu owner %llu\n", + (unsigned long long)eb->start, + btrfs_header_level(eb), nr, + (u32)BTRFS_NODEPTRS_PER_BLOCK(root) - nr, + (unsigned long long)btrfs_header_generation(eb), + (unsigned long long)btrfs_header_owner(eb)); + print_uuids(eb); + fflush(stdout); + size = btrfs_level_size(root, btrfs_header_level(eb) - 1); + for (i = 0; i < nr; i++) { + u64 blocknr = btrfs_node_blockptr(eb, i); + btrfs_node_key(eb, &disk_key, i); + btrfs_disk_key_to_cpu(&key, &disk_key); + printf("\t"); + btrfs_print_key(&disk_key); + printf(" block %llu (%llu) gen %llu\n", + (unsigned long long)blocknr, + (unsigned long long)blocknr / size, + (unsigned long long)btrfs_node_ptr_generation(eb, i)); + fflush(stdout); + } + if (!follow) + return; + + for (i = 0; i < nr; i++) { + struct extent_buffer *next = read_tree_block(root, + btrfs_node_blockptr(eb, i), + size, + btrfs_node_ptr_generation(eb, i)); + if (!extent_buffer_uptodate(next)) { + fprintf(stderr, "failed to read %llu in tree %llu\n", + (unsigned long long)btrfs_node_blockptr(eb, i), + (unsigned long long)btrfs_header_owner(eb)); + continue; + } + if (btrfs_is_leaf(next) && + btrfs_header_level(eb) != 1) + BUG(); + if (btrfs_header_level(next) != + btrfs_header_level(eb) - 1) + BUG(); + btrfs_print_tree(root, next, 1); + free_extent_buffer(next); + } +} |