3 #include "kerncompat.h"
4 #include "radix-tree.h"
8 #include "transaction.h"
10 int insert_with_overflow(struct btrfs_trans_handle *trans, struct btrfs_root
11 *root, struct btrfs_path *path, struct btrfs_key
12 *cpu_key, u32 data_size)
17 ret = btrfs_insert_empty_item(trans, root, path, cpu_key, data_size);
18 overflow = btrfs_key_overflow(cpu_key);
20 while(ret == -EEXIST && overflow < BTRFS_KEY_OVERFLOW_MAX) {
22 btrfs_set_key_overflow(cpu_key, overflow);
23 btrfs_release_path(root, path);
24 ret = btrfs_insert_empty_item(trans, root, path, cpu_key,
30 int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
31 *root, char *name, int name_len, u64 dir,
32 struct btrfs_key *location, u8 type)
35 struct btrfs_path path;
36 struct btrfs_dir_item *dir_item;
43 btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY);
44 if (name_len == 1 && *name == '.')
46 else if (name_len == 2 && name[0] == '.' && name[1] == '.')
49 ret = btrfs_name_hash(name, name_len, &key.offset);
51 btrfs_init_path(&path);
52 data_size = sizeof(*dir_item) + name_len;
53 ret = insert_with_overflow(trans, root, &path, &key, data_size);
57 dir_item = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
58 struct btrfs_dir_item);
59 btrfs_cpu_key_to_disk(&dir_item->location, location);
60 btrfs_set_dir_type(dir_item, type);
61 btrfs_set_dir_flags(dir_item, 0);
62 btrfs_set_dir_name_len(dir_item, name_len);
63 name_ptr = (char *)(dir_item + 1);
64 memcpy(name_ptr, name, name_len);
66 btrfs_release_path(root, &path);
70 int btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
71 *root, struct btrfs_path *path, u64 dir, char *name,
72 int name_len, int mod)
76 int ins_len = mod < 0 ? -1 : 0;
81 btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY);
82 ret = btrfs_name_hash(name, name_len, &key.offset);
84 ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
88 int btrfs_match_dir_item_name(struct btrfs_root *root,
89 struct btrfs_path *path, char
92 struct btrfs_dir_item *dir_item;
95 dir_item = btrfs_item_ptr(&path->nodes[0]->leaf, path->slots[0],
96 struct btrfs_dir_item);
97 if (btrfs_dir_name_len(dir_item) != name_len)
99 name_ptr = (char *)(dir_item + 1);
100 if (memcmp(name_ptr, name, name_len))