static void print_inode_item(struct extent_buffer *eb,
struct btrfs_inode_item *ii)
{
char flags_str[256];
memset(flags_str, 0, sizeof(flags_str));
inode_flags_to_str(btrfs_inode_flags(eb, ii), flags_str);
printf("\t\tinode generation %llu transid %llu size %llu nbytes %llu\n"
"\t\tblock group %llu mode %o links %u uid %u gid %u rdev %llu\n"
"\t\tsequence %llu flags 0x%llx(%s)\n",
(unsigned long long)btrfs_inode_generation(eb, ii),
(unsigned long long)btrfs_inode_transid(eb, ii),
(unsigned long long)btrfs_inode_size(eb, ii),
(unsigned long long)btrfs_inode_nbytes(eb, ii),
(unsigned long long)btrfs_inode_block_group(eb,ii),
btrfs_inode_mode(eb, ii),
btrfs_inode_nlink(eb, ii),
btrfs_inode_uid(eb, ii),
btrfs_inode_gid(eb, ii),
(unsigned long long)btrfs_inode_rdev(eb,ii),
(unsigned long long)btrfs_inode_flags(eb,ii),
(unsigned long long)btrfs_inode_sequence(eb, ii),
flags_str);
print_timespec(eb, btrfs_inode_atime(ii), "\t\tatime ", "\n");
print_timespec(eb, btrfs_inode_ctime(ii), "\t\tctime ", "\n");
print_timespec(eb, btrfs_inode_mtime(ii), "\t\tmtime ", "\n");
print_timespec(eb, btrfs_inode_otime(ii), "\t\totime ", "\n");
}
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_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;
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(l, 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 block group %llu mode %o links %u\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_block_group(l,ii),
btrfs_inode_mode(l, ii),
btrfs_inode_nlink(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, 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));
printf("\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
(unsigned long long)btrfs_block_group_used(&bg_item),
(unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
(unsigned long long)btrfs_block_group_flags(&bg_item));
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);
printf("\t\tversion %llu generation %llu flags %#llx "
"scan %lld\n",
(unsigned long long)
btrfs_qgroup_status_version(l, qg_status),
(unsigned long long)
btrfs_qgroup_status_generation(l, qg_status),
(unsigned long long)
btrfs_qgroup_status_flags(l, qg_status),
(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 %lld referenced compressed %lld\n"
"\t\texclusive %lld exclusive compressed %lld\n",
(unsigned long long)
btrfs_qgroup_info_generation(l, qg_info),
(long long)
btrfs_qgroup_info_referenced(l, qg_info),
(long long)
btrfs_qgroup_info_referenced_compressed(l,
qg_info),
(long long)
btrfs_qgroup_info_exclusive(l, qg_info),
(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_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);
}
}
/*
* Unlink an inode, which will remove its backref and corresponding dir_index/
* dir_item if any of them exists.
*
* If an inode's nlink is reduced to 0 and 'add_orphan' is true, it will be
* added to orphan inode and waiting to be deleted by next kernel mount.
*/
int btrfs_unlink(struct btrfs_trans_handle *trans, struct btrfs_root *root,
u64 ino, u64 parent_ino, u64 index, const char *name,
int namelen, int add_orphan)
{
struct btrfs_path *path;
struct btrfs_key key;
struct btrfs_inode_item *inode_item;
struct btrfs_inode_ref *inode_ref;
struct btrfs_dir_item *dir_item;
u64 inode_size;
u32 nlinks;
int del_inode_ref = 0;
int del_dir_item = 0;
int del_dir_index = 0;
int ret = 0;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
/* check the ref and backref exists */
inode_ref = btrfs_lookup_inode_ref(trans, root, path, name, namelen,
ino, parent_ino, index, 0);
if (IS_ERR(inode_ref)) {
ret = PTR_ERR(inode_ref);
goto out;
}
if (inode_ref)
del_inode_ref = 1;
btrfs_release_path(path);
dir_item = btrfs_lookup_dir_item(NULL, root, path, parent_ino,
name, namelen, 0);
if (IS_ERR(dir_item)) {
ret = PTR_ERR(dir_item);
goto out;
}
if (dir_item)
del_dir_item = 1;
btrfs_release_path(path);
dir_item = btrfs_lookup_dir_index(NULL, root, path, parent_ino,
name, namelen, index, 0);
/*
* Since lookup_dir_index() will return -ENOENT when not found,
* we need to do extra check.
*/
if (IS_ERR(dir_item) && PTR_ERR(dir_item) == -ENOENT)
dir_item = NULL;
if (IS_ERR(dir_item)) {
ret = PTR_ERR(dir_item);
goto out;
}
if (dir_item)
del_dir_index = 1;
btrfs_release_path(path);
if (!del_inode_ref && !del_dir_item && !del_dir_index) {
/* All not found, shouldn't happen */
ret = -ENOENT;
goto out;
}
if (del_inode_ref) {
/* Only decrease nlink when deleting inode_ref */
key.objectid = ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
if (ret) {
if (ret > 0)
ret = -ENOENT;
goto out;
}
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
nlinks = btrfs_inode_nlink(path->nodes[0], inode_item);
if (nlinks > 0)
nlinks--;
btrfs_set_inode_nlink(path->nodes[0], inode_item, nlinks);
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_release_path(path);
/* For nlinks == 0, add it to orphan list if needed */
if (nlinks == 0 && add_orphan) {
ret = btrfs_add_orphan_item(trans, root, path, ino);
if (ret < 0)
goto out;
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_release_path(path);
}
ret = btrfs_del_inode_ref(trans, root, name, namelen, ino,
parent_ino, &index);
if (ret < 0)
goto out;
}
if (del_dir_index) {
dir_item = btrfs_lookup_dir_index(trans, root, path,
parent_ino, name, namelen,
index, -1);
if (IS_ERR(dir_item)) {
ret = PTR_ERR(dir_item);
goto out;
}
if (!dir_item) {
ret = -ENOENT;
goto out;
}
ret = btrfs_delete_one_dir_name(trans, root, path, dir_item);
if (ret)
goto out;
btrfs_release_path(path);
/* Update inode size of the parent inode */
key.objectid = parent_ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
ret = btrfs_search_slot(trans, root, &key, path, 1, 1);
if (ret)
goto out;
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
inode_size = btrfs_inode_size(path->nodes[0], inode_item);
if (inode_size >= namelen)
inode_size -= namelen;
btrfs_set_inode_size(path->nodes[0], inode_item, inode_size);
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_release_path(path);
}
if (del_dir_item) {
dir_item = btrfs_lookup_dir_item(trans, root, path, parent_ino,
name, namelen, -1);
if (IS_ERR(dir_item)) {
ret = PTR_ERR(dir_item);
goto out;
}
if (!dir_item) {
ret = -ENOENT;
goto out;
}
ret = btrfs_delete_one_dir_name(trans, root, path, dir_item);
if (ret < 0)
goto out;
btrfs_release_path(path);
/* Update inode size of the parent inode */
key.objectid = parent_ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
ret = btrfs_search_slot(trans, root, &key, path, 1, 1);
if (ret)
goto out;
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
inode_size = btrfs_inode_size(path->nodes[0], inode_item);
if (inode_size >= namelen)
inode_size -= namelen;
btrfs_set_inode_size(path->nodes[0], inode_item, inode_size);
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_release_path(path);
}
out:
btrfs_free_path(path);
return ret;
}
/*
* Add dir_item/index for 'parent_ino' if add_backref is true, also insert a
* backref from the ino to parent dir and update the nlink(Kernel version does
* not do this thing)
*
* Currently only supports adding link from an inode to another inode.
*/
int btrfs_add_link(struct btrfs_trans_handle *trans, struct btrfs_root *root,
u64 ino, u64 parent_ino, char *name, int namelen,
u8 type, u64 *index, int add_backref)
{
struct btrfs_path *path;
struct btrfs_key key;
struct btrfs_inode_item *inode_item;
u32 nlink;
u64 inode_size;
u64 ret_index = 0;
int ret = 0;
path = btrfs_alloc_path();
if (!path)
return -ENOMEM;
if (index && *index) {
ret_index = *index;
} else {
ret = btrfs_find_free_dir_index(root, parent_ino, &ret_index);
if (ret < 0)
goto out;
}
ret = check_dir_conflict(root, name, namelen, parent_ino, ret_index);
if (ret < 0)
goto out;
/* Add inode ref */
if (add_backref) {
ret = btrfs_insert_inode_ref(trans, root, name, namelen,
ino, parent_ino, ret_index);
if (ret < 0)
goto out;
/* Update nlinks for the inode */
key.objectid = ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
ret = btrfs_search_slot(trans, root, &key, path, 1, 1);
if (ret) {
if (ret > 0)
ret = -ENOENT;
goto out;
}
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
nlink = btrfs_inode_nlink(path->nodes[0], inode_item);
nlink++;
btrfs_set_inode_nlink(path->nodes[0], inode_item, nlink);
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_release_path(path);
}
/* Add dir_item and dir_index */
key.objectid = ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
ret = btrfs_insert_dir_item(trans, root, name, namelen, parent_ino,
&key, type, ret_index);
if (ret < 0)
goto out;
/* Update inode size of the parent inode */
key.objectid = parent_ino;
key.type = BTRFS_INODE_ITEM_KEY;
key.offset = 0;
ret = btrfs_search_slot(trans, root, &key, path, 1, 1);
if (ret)
goto out;
inode_item = btrfs_item_ptr(path->nodes[0], path->slots[0],
struct btrfs_inode_item);
inode_size = btrfs_inode_size(path->nodes[0], inode_item);
inode_size += namelen * 2;
btrfs_set_inode_size(path->nodes[0], inode_item, inode_size);
btrfs_mark_buffer_dirty(path->nodes[0]);
btrfs_release_path(path);
out:
btrfs_free_path(path);
if (ret == 0 && index)
*index = ret_index;
return ret;
}
void btrfs_print_leaf(struct btrfs_root *root, struct extent_buffer *l)
{
int i;
char *str;
struct btrfs_item *item;
struct btrfs_root_item *ri;
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_dev_extent *dev_extent;
struct btrfs_disk_key disk_key;
struct btrfs_root_item root_item;
struct btrfs_block_group_item bg_item;
struct btrfs_dir_log_item *dlog;
u32 nr = btrfs_header_nritems(l);
u32 type;
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(l, i);
btrfs_item_key(l, &disk_key, i);
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));
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 links %u\n",
(unsigned long long)btrfs_inode_generation(l, ii),
(unsigned long long)btrfs_inode_size(l, ii),
(unsigned long long)btrfs_inode_block_group(l,ii),
btrfs_inode_mode(l, ii),
btrfs_inode_nlink(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_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:
ri = btrfs_item_ptr(l, i, struct btrfs_root_item);
read_extent_buffer(l, &root_item, (unsigned long)ri, sizeof(root_item));
printf("\t\troot data bytenr %llu level %d dirid %llu refs %u gen %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));
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);
}
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);
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, 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));
printf("\t\tblock group used %llu chunk_objectid %llu flags %llu\n",
(unsigned long long)btrfs_block_group_used(&bg_item),
(unsigned long long)btrfs_block_group_chunk_objectid(&bg_item),
(unsigned long long)btrfs_block_group_flags(&bg_item));
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_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;
};
fflush(stdout);
}
}
