Commit | Line | Data |
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62e2749e CM |
1 | #include <stdio.h> |
2 | #include <stdlib.h> | |
3 | #include "kerncompat.h" | |
4 | #include "radix-tree.h" | |
5 | #include "ctree.h" | |
6 | #include "disk-io.h" | |
7 | #include "hash.h" | |
e089f05c | 8 | #include "transaction.h" |
62e2749e | 9 | |
e089f05c CM |
10 | int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
11 | *root, char *name, int name_len, u64 dir, u64 | |
12 | objectid, u8 type) | |
62e2749e CM |
13 | { |
14 | int ret = 0; | |
15 | struct btrfs_path path; | |
16 | struct btrfs_dir_item *dir_item; | |
17 | char *name_ptr; | |
18 | struct btrfs_key key; | |
19 | u32 data_size; | |
20 | ||
21 | key.objectid = dir; | |
22 | key.flags = 0; | |
1d4f6404 | 23 | btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY); |
62e2749e CM |
24 | ret = btrfs_name_hash(name, name_len, &key.offset); |
25 | BUG_ON(ret); | |
26 | btrfs_init_path(&path); | |
27 | data_size = sizeof(*dir_item) + name_len; | |
e089f05c | 28 | ret = btrfs_insert_empty_item(trans, root, &path, &key, data_size); |
62e2749e CM |
29 | if (ret) |
30 | goto out; | |
31 | ||
32 | dir_item = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0], | |
33 | struct btrfs_dir_item); | |
34 | btrfs_set_dir_objectid(dir_item, objectid); | |
35 | btrfs_set_dir_type(dir_item, type); | |
36 | btrfs_set_dir_flags(dir_item, 0); | |
a8a2ee0c | 37 | btrfs_set_dir_name_len(dir_item, name_len); |
62e2749e CM |
38 | name_ptr = (char *)(dir_item + 1); |
39 | memcpy(name_ptr, name, name_len); | |
40 | out: | |
41 | btrfs_release_path(root, &path); | |
42 | return ret; | |
43 | } | |
44 | ||
e089f05c CM |
45 | int btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root |
46 | *root, struct btrfs_path *path, u64 dir, char *name, | |
47 | int name_len, int mod) | |
62e2749e | 48 | { |
1d4f6404 | 49 | int ret; |
62e2749e | 50 | struct btrfs_key key; |
1d4f6404 CM |
51 | int ins_len = mod < 0 ? -1 : 0; |
52 | int cow = mod != 0; | |
62e2749e CM |
53 | |
54 | key.objectid = dir; | |
55 | key.flags = 0; | |
1d4f6404 | 56 | btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY); |
62e2749e CM |
57 | ret = btrfs_name_hash(name, name_len, &key.offset); |
58 | BUG_ON(ret); | |
e089f05c | 59 | ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow); |
62e2749e CM |
60 | return ret; |
61 | } | |
62 | ||
e089f05c CM |
63 | int btrfs_match_dir_item_name(struct btrfs_root *root, |
64 | struct btrfs_path *path, char | |
65 | *name, int name_len) | |
62e2749e | 66 | { |
62e2749e CM |
67 | struct btrfs_dir_item *dir_item; |
68 | char *name_ptr; | |
a8a2ee0c | 69 | |
1d4f6404 CM |
70 | dir_item = btrfs_item_ptr(&path->nodes[0]->leaf, path->slots[0], |
71 | struct btrfs_dir_item); | |
a8a2ee0c CM |
72 | if (btrfs_dir_name_len(dir_item) != name_len) |
73 | return 0; | |
62e2749e | 74 | name_ptr = (char *)(dir_item + 1); |
a8a2ee0c | 75 | if (memcmp(name_ptr, name, name_len)) |
1d4f6404 | 76 | return 0; |
1d4f6404 | 77 | return 1; |
62e2749e | 78 | } |