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, u64
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_set_dir_objectid(dir_item, objectid);
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);
67 btrfs_set_key_type(&key, BTRFS_DIR_INDEX_KEY);
68 key.offset = objectid;
69 ret = insert_with_overflow(trans, root, &path, &key, data_size);
73 dir_item = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0],
74 struct btrfs_dir_item);
75 btrfs_set_dir_objectid(dir_item, objectid);
76 btrfs_set_dir_type(dir_item, type);
77 btrfs_set_dir_flags(dir_item, 0);
78 btrfs_set_dir_name_len(dir_item, name_len);
79 name_ptr = (char *)(dir_item + 1);
80 memcpy(name_ptr, name, name_len);
82 btrfs_release_path(root, &path);
86 int btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
87 *root, struct btrfs_path *path, u64 dir, char *name,
88 int name_len, int mod)
92 int ins_len = mod < 0 ? -1 : 0;
97 btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY);
98 btrfs_set_key_overflow(&key, BTRFS_KEY_OVERFLOW_MAX);
99 ret = btrfs_name_hash(name, name_len, &key.offset);
101 ret = btrfs_search_slot(trans, root, &key, path, ins_len, cow);
105 int btrfs_match_dir_item_name(struct btrfs_root *root,
106 struct btrfs_path *path, char
109 struct btrfs_dir_item *dir_item;
112 dir_item = btrfs_item_ptr(&path->nodes[0]->leaf, path->slots[0],
113 struct btrfs_dir_item);
114 if (btrfs_dir_name_len(dir_item) != name_len)
116 name_ptr = (char *)(dir_item + 1);
117 if (memcmp(name_ptr, name, name_len))