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)", (unsigned long long)(offset >> 48),
(unsigned long long)(offset & ((1ll << 48) - 1)));
break;
default:
if (offset == (u64)-1)
printf(" -1)");
else
printf(" %llu)", (unsigned long long)offset);
break;
}
}
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;
}
}
void btrfs_print_key(struct btrfs_disk_key *disk_key)
{
u8 type;
printf("key (");
type = btrfs_disk_key_type(disk_key);
print_objectid((unsigned long long)btrfs_disk_key_objectid(disk_key),
type);
printf(" ");
print_key_type(type);
printf(" %llu)", (unsigned long long)btrfs_disk_key_offset(disk_key));
}
static void print_extent_item(struct extent_buffer *eb, int slot)
{
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;
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);
printk(KERN_INFO "\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);
printk(KERN_INFO "\t\textent refs %llu gen %llu flags %llu\n",
(unsigned long long)btrfs_extent_refs(eb, ei),
(unsigned long long)btrfs_extent_generation(eb, ei),
(unsigned long long)flags);
if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
struct btrfs_tree_block_info *info;
info = (struct btrfs_tree_block_info *)(ei + 1);
btrfs_tree_block_key(eb, info, &key);
printk(KERN_INFO "\t\ttree block key (%llu %x %llu) "
"level %d\n",
(unsigned long long)btrfs_disk_key_objectid(&key),
key.type,
(unsigned long long)btrfs_disk_key_offset(&key),
btrfs_tree_block_level(eb, info));
iref = (struct btrfs_extent_inline_ref *)(info + 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:
printk(KERN_INFO "\t\ttree block backref "
"root %llu\n", (unsigned long long)offset);
break;
case BTRFS_SHARED_BLOCK_REF_KEY:
printk(KERN_INFO "\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);
print_extent_data_ref(eb, dref);
break;
case BTRFS_SHARED_DATA_REF_KEY:
sref = (struct btrfs_shared_data_ref *)(iref + 1);
printk(KERN_INFO "\t\tshared data backref "
"parent %llu count %u\n",
(unsigned long long)offset,
btrfs_shared_data_ref_count(eb, sref));
break;
default:
BUG();
}
ptr += btrfs_extent_inline_ref_size(type);
}
WARN_ON(ptr > end);
}
void btrfs_print_leaf(struct btrfs_root *root, struct btrfs_leaf *l)
{
unsigned int i;
u32 nr = btrfs_header_nritems(&l->header);
struct btrfs_item *item;
struct btrfs_extent_item *ei;
struct btrfs_root_item *ri;
struct btrfs_dir_item *di;
struct btrfs_inode_item *ii;
struct btrfs_file_extent_item *fi;
struct btrfs_csum_item *ci;
struct btrfs_block_group_item *bi;
u32 type;
printf("leaf %llu ptrs %d free space %d generation %llu owner %llu\n",
(u64)btrfs_header_blocknr(&l->header), nr,
btrfs_leaf_free_space(root, l),
(u64)btrfs_header_generation(&l->header),
(u64)btrfs_header_owner(&l->header));
fflush(stdout);
for (i = 0 ; i < nr ; i++) {
item = l->items + i;
type = btrfs_disk_key_type(&item->key);
printf("\titem %d key (%llu %x %llu) itemoff %d itemsize %d\n",
i,
(u64)btrfs_disk_key_objectid(&item->key),
btrfs_disk_key_flags(&item->key),
(u64)btrfs_disk_key_offset(&item->key),
btrfs_item_offset(item),
btrfs_item_size(item));
switch (type) {
case BTRFS_INODE_ITEM_KEY:
ii = btrfs_item_ptr(l, i, struct btrfs_inode_item);
printf("\t\tinode generation %llu size %llu block group %llu mode %o\n",
(u64)btrfs_inode_generation(ii),
(u64)btrfs_inode_size(ii),
(u64)btrfs_inode_block_group(ii),
btrfs_inode_mode(ii));
break;
case BTRFS_DIR_ITEM_KEY:
di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
print_dir_item(l->items + i, di);
break;
case BTRFS_DIR_INDEX_KEY:
di = btrfs_item_ptr(l, i, struct btrfs_dir_item);
print_dir_item(l->items + i, di);
break;
case BTRFS_ROOT_ITEM_KEY:
ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
printf("\t\troot data blocknr %llu dirid %llu refs %u\n",
(u64)btrfs_root_blocknr(ri),
(u64)btrfs_root_dirid(ri),
btrfs_root_refs(ri));
break;
case BTRFS_EXTENT_ITEM_KEY:
ei = btrfs_item_ptr(l, i, struct btrfs_extent_item);
printf("\t\textent data refs %u owner %llu\n",
btrfs_extent_refs(ei),
(u64)btrfs_extent_owner(ei));
break;
case BTRFS_CSUM_ITEM_KEY:
ci = btrfs_item_ptr(l, i,
struct btrfs_csum_item);
printf("\t\tcsum item\n");
break;
case BTRFS_EXTENT_DATA_KEY:
fi = btrfs_item_ptr(l, i,
struct btrfs_file_extent_item);
if (btrfs_file_extent_type(fi) ==
BTRFS_FILE_EXTENT_INLINE) {
printf("\t\tinline extent data size %u\n",
btrfs_file_extent_inline_len(l->items + i));
break;
}
printf("\t\textent data disk block %llu nr %llu\n",
(u64)btrfs_file_extent_disk_blocknr(fi),
(u64)btrfs_file_extent_disk_num_blocks(fi));
printf("\t\textent data offset %llu nr %llu\n",
(u64)btrfs_file_extent_offset(fi),
(u64)btrfs_file_extent_num_blocks(fi));
break;
case BTRFS_BLOCK_GROUP_ITEM_KEY:
bi = btrfs_item_ptr(l, i,
struct btrfs_block_group_item);
printf("\t\tblock group used %llu flags %x\n",
(u64)btrfs_block_group_used(bi),
bi->flags);
break;
case BTRFS_STRING_ITEM_KEY:
printf("\t\titem data %.*s\n", btrfs_item_size(item),
btrfs_leaf_data(l) + btrfs_item_offset(item));
break;
};
fflush(stdout);
}
}
void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *eb)
{
struct btrfs_item *item;
struct btrfs_disk_key disk_key;
u32 i;
u32 nr;
nr = btrfs_header_nritems(eb);
printf("leaf %llu items %d free space %d generation %llu owner %llu\n",
(unsigned long long)btrfs_header_bytenr(eb), nr,
btrfs_leaf_free_space(root, eb),
(unsigned long long)btrfs_header_generation(eb),
(unsigned long long)btrfs_header_owner(eb));
print_uuids(eb);
fflush(stdout);
for (i = 0; i < nr; i++) {
u32 item_size;
void *ptr;
u64 objectid;
u32 type;
u64 offset;
char flags_str[256];
char uuid_str[BTRFS_UUID_UNPARSED_SIZE];
u8 uuid[BTRFS_UUID_SIZE];
item = btrfs_item_nr(i);
item_size = btrfs_item_size(eb, item);
/* Untyped extraction of slot from btrfs_item_ptr */
ptr = btrfs_item_ptr(eb, i, void*);
btrfs_item_key(eb, &disk_key, i);
objectid = btrfs_disk_key_objectid(&disk_key);
type = btrfs_disk_key_type(&disk_key);
offset = btrfs_disk_key_offset(&disk_key);
printf("\titem %d ", i);
btrfs_print_key(&disk_key);
printf(" itemoff %d itemsize %d\n",
btrfs_item_offset(eb, item),
btrfs_item_size(eb, item));
if (type == 0 && objectid == BTRFS_FREE_SPACE_OBJECTID)
print_free_space_header(eb, i);
switch (type) {
case BTRFS_INODE_ITEM_KEY:
print_inode_item(eb, ptr);
break;
case BTRFS_INODE_REF_KEY:
print_inode_ref_item(eb, item_size, ptr);
break;
case BTRFS_INODE_EXTREF_KEY:
print_inode_extref_item(eb, item_size, ptr);
break;
case BTRFS_DIR_ITEM_KEY:
case BTRFS_DIR_INDEX_KEY:
case BTRFS_XATTR_ITEM_KEY:
print_dir_item(eb, item_size, ptr);
break;
case BTRFS_DIR_LOG_INDEX_KEY:
case BTRFS_DIR_LOG_ITEM_KEY: {
struct btrfs_dir_log_item *dlog;
dlog = btrfs_item_ptr(eb, i, struct btrfs_dir_log_item);
printf("\t\tdir log end %Lu\n",
(unsigned long long)btrfs_dir_log_end(eb, dlog));
break;
}
case BTRFS_ORPHAN_ITEM_KEY:
printf("\t\torphan item\n");
break;
case BTRFS_ROOT_ITEM_KEY:
print_root(eb, i);
break;
case BTRFS_ROOT_REF_KEY:
print_root_ref(eb, i, "ref");
break;
case BTRFS_ROOT_BACKREF_KEY:
print_root_ref(eb, i, "backref");
break;
case BTRFS_EXTENT_ITEM_KEY:
print_extent_item(eb, i, 0);
break;
case BTRFS_METADATA_ITEM_KEY:
print_extent_item(eb, 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: {
struct btrfs_extent_data_ref *dref;
dref = btrfs_item_ptr(eb, 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(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: {
struct btrfs_shared_data_ref *sref;
sref = btrfs_item_ptr(eb, i, struct btrfs_shared_data_ref);
printf("\t\tshared data backref count %u\n",
btrfs_shared_data_ref_count(eb, sref));
break;
}
case BTRFS_EXTENT_REF_V0_KEY:
#ifdef BTRFS_COMPAT_EXTENT_TREE_V0
print_extent_ref_v0(eb, 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:
print_file_extent_item(eb, item, i, ptr);
break;
case BTRFS_BLOCK_GROUP_ITEM_KEY: {
struct btrfs_block_group_item bg_item;
read_extent_buffer(eb, &bg_item, (unsigned long)ptr,
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: {
struct btrfs_free_space_info *free_info;
free_info = btrfs_item_ptr(eb, i, struct btrfs_free_space_info);
printf("\t\tfree space info extent count %u flags %u\n",
(unsigned)btrfs_free_space_extent_count(eb, free_info),
(unsigned)btrfs_free_space_flags(eb, 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(eb, ptr);
break;
case BTRFS_DEV_ITEM_KEY:
print_dev_item(eb, ptr);
break;
case BTRFS_DEV_EXTENT_KEY: {
struct btrfs_dev_extent *dev_extent;
dev_extent = btrfs_item_ptr(eb, i,
struct btrfs_dev_extent);
read_extent_buffer(eb, uuid,
(unsigned long)btrfs_dev_extent_chunk_tree_uuid(dev_extent),
BTRFS_UUID_SIZE);
uuid_unparse(uuid, uuid_str);
printf("\t\tdev extent chunk_tree %llu\n"
"\t\tchunk_objectid %llu chunk_offset %llu "
"length %llu\n"
"\t\tchunk_tree_uuid %s\n",
(unsigned long long)
btrfs_dev_extent_chunk_tree(eb, dev_extent),
(unsigned long long)
btrfs_dev_extent_chunk_objectid(eb, dev_extent),
(unsigned long long)
btrfs_dev_extent_chunk_offset(eb, dev_extent),
(unsigned long long)
btrfs_dev_extent_length(eb, dev_extent),
uuid_str);
break;
}
case BTRFS_QGROUP_STATUS_KEY: {
struct btrfs_qgroup_status_item *qg_status;
qg_status = btrfs_item_ptr(eb, i,
struct btrfs_qgroup_status_item);
memset(flags_str, 0, sizeof(flags_str));
qgroup_flags_to_str(btrfs_qgroup_status_flags(eb, qg_status),
flags_str);
printf("\t\tversion %llu generation %llu flags %s "
"scan %lld\n",
(unsigned long long)
btrfs_qgroup_status_version(eb, qg_status),
(unsigned long long)
btrfs_qgroup_status_generation(eb, qg_status),
flags_str,
(unsigned long long)
btrfs_qgroup_status_rescan(eb, qg_status));
break;
}
case BTRFS_QGROUP_RELATION_KEY:
break;
case BTRFS_QGROUP_INFO_KEY: {
struct btrfs_qgroup_info_item *qg_info;
qg_info = btrfs_item_ptr(eb, 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(eb, qg_info),
(unsigned long long)
btrfs_qgroup_info_referenced(eb, qg_info),
(unsigned long long)
btrfs_qgroup_info_referenced_compressed(eb,
qg_info),
(unsigned long long)
btrfs_qgroup_info_exclusive(eb, qg_info),
(unsigned long long)
btrfs_qgroup_info_exclusive_compressed(eb,
qg_info));
break;
}
case BTRFS_QGROUP_LIMIT_KEY: {
struct btrfs_qgroup_limit_item *qg_limit;
qg_limit = btrfs_item_ptr(eb, 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(eb, qg_limit),
(long long)
btrfs_qgroup_limit_max_referenced(eb, qg_limit),
(long long)
btrfs_qgroup_limit_max_exclusive(eb, qg_limit),
(long long)
btrfs_qgroup_limit_rsv_referenced(eb, qg_limit),
(long long)
btrfs_qgroup_limit_rsv_exclusive(eb, qg_limit));
break;
}
case BTRFS_UUID_KEY_SUBVOL:
case BTRFS_UUID_KEY_RECEIVED_SUBVOL:
print_uuid_item(eb, btrfs_item_ptr_offset(eb, i),
btrfs_item_size_nr(eb, i));
break;
case BTRFS_STRING_ITEM_KEY: {
const char *str = eb->data + btrfs_item_ptr_offset(eb, i);
printf("\t\titem data %.*s\n", item_size, str);
break;
}
case BTRFS_PERSISTENT_ITEM_KEY:
printf("\t\tpersistent item objectid ");
print_objectid(stdout, objectid, BTRFS_PERSISTENT_ITEM_KEY);
printf(" offset %llu\n", (unsigned long long)offset);
switch (objectid) {
case BTRFS_DEV_STATS_OBJECTID:
print_dev_stats(eb, ptr, item_size);
break;
default:
printf("\t\tunknown persistent item objectid %llu\n",
objectid);
}
break;
case BTRFS_TEMPORARY_ITEM_KEY:
printf("\t\ttemporary item objectid ");
print_objectid(stdout, objectid, BTRFS_TEMPORARY_ITEM_KEY);
printf(" offset %llu\n", (unsigned long long)offset);
switch (objectid) {
case BTRFS_BALANCE_OBJECTID:
print_balance_item(eb, ptr);
break;
default:
printf("\t\tunknown temporary item objectid %llu\n",
objectid);
}
break;
};
fflush(stdout);
}
}
