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