Commit | Line | Data |
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2e635a27 | 1 | #include <linux/module.h> |
1e1d2701 CM |
2 | #include "ctree.h" |
3 | #include "disk-io.h" | |
e089f05c | 4 | #include "transaction.h" |
1e1d2701 | 5 | |
e089f05c CM |
6 | int btrfs_insert_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
7 | *root, u64 objectid, struct btrfs_inode_item | |
8 | *inode_item) | |
1e1d2701 | 9 | { |
5caf2a00 | 10 | struct btrfs_path *path; |
1e1d2701 CM |
11 | struct btrfs_key key; |
12 | int ret; | |
13 | key.objectid = objectid; | |
14 | key.flags = 0; | |
15 | btrfs_set_key_type(&key, BTRFS_INODE_ITEM_KEY); | |
16 | key.offset = 0; | |
17 | ||
5caf2a00 CM |
18 | path = btrfs_alloc_path(); |
19 | BUG_ON(!path); | |
20 | btrfs_init_path(path); | |
e089f05c CM |
21 | ret = btrfs_insert_item(trans, root, &key, inode_item, |
22 | sizeof(*inode_item)); | |
5caf2a00 CM |
23 | btrfs_release_path(root, path); |
24 | btrfs_free_path(path); | |
1b05da2e CM |
25 | if (ret == 0 && objectid > root->highest_inode) |
26 | root->highest_inode = objectid; | |
1e1d2701 CM |
27 | return ret; |
28 | } | |
29 | ||
e089f05c | 30 | int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root |
d6e4a428 CM |
31 | *root, struct btrfs_path *path, |
32 | struct btrfs_key *location, int mod) | |
1e1d2701 | 33 | { |
1e1d2701 CM |
34 | int ins_len = mod < 0 ? -1 : 0; |
35 | int cow = mod != 0; | |
d6e4a428 CM |
36 | int ret; |
37 | int slot; | |
38 | struct btrfs_leaf *leaf; | |
39 | struct btrfs_key found_key; | |
1e1d2701 | 40 | |
d6e4a428 CM |
41 | ret = btrfs_search_slot(trans, root, location, path, ins_len, cow); |
42 | if (ret > 0 && btrfs_key_type(location) == BTRFS_ROOT_ITEM_KEY && | |
43 | location->offset == (u64)-1 && path->slots[0] != 0) { | |
44 | slot = path->slots[0] - 1; | |
45 | leaf = btrfs_buffer_leaf(path->nodes[0]); | |
46 | btrfs_disk_key_to_cpu(&found_key, &leaf->items[slot].key); | |
47 | if (found_key.objectid == location->objectid && | |
48 | btrfs_key_type(&found_key) == btrfs_key_type(location)) { | |
49 | path->slots[0]--; | |
50 | return 0; | |
51 | } | |
52 | } | |
53 | return ret; | |
1e1d2701 | 54 | } |