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#include <linux/module.h>
#include "ctree.h"
#include "disk-io.h"
#include "transaction.h"
int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root
*root, u64 objectid, struct btrfs_inode_item
*inode_item)
{
struct btrfs_path *path;
struct btrfs_key key;
int ret;
key.objectid = objectid;
key.flags = 0;
btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY);
key.offset = 0;
path = btrfs_alloc_path();
BUG_ON(!path);
btrfs_init_path(path);
ret = btrfs_insert_item(trans, root, &key, inode_item,
sizeof(*inode_item));
btrfs_release_path(root, path);
btrfs_free_path(path);
return ret;
}
int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path,
struct btrfs_key *location, int mod)
{
int ins_len = mod < 0 ? -1 : 0;
int cow = mod != 0;
int ret;
int slot;
struct btrfs_leaf *leaf;
struct btrfs_key found_key;
ret = btrfs_search_slot(trans, root, location, path, ins_len, cow);
if (ret > 0 && btrfs_key_type(location) == BTRFS_ROOT_ITEM_KEY &&
location->offset == (u64)-1 && path->slots[0] != 0) {
slot = path->slots[0] - 1;
leaf = btrfs_buffer_leaf(path->nodes[0]);
btrfs_disk_key_to_cpu(&found_key, &leaf->items[slot].key);
if (found_key.objectid == location->objectid &&
btrfs_key_type(&found_key) == btrfs_key_type(location)) {
path->slots[0]--;
return 0;
}
}
return ret;
}
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