162e2749eSChris Mason #include <stdio.h> 262e2749eSChris Mason #include <stdlib.h> 362e2749eSChris Mason #include "kerncompat.h" 462e2749eSChris Mason #include "radix-tree.h" 562e2749eSChris Mason #include "ctree.h" 662e2749eSChris Mason #include "disk-io.h" 762e2749eSChris Mason #include "hash.h" 862e2749eSChris Mason 962e2749eSChris Mason int btrfs_insert_dir_item(struct btrfs_root *root, char *name, int name_len, 1062e2749eSChris Mason u64 dir, u64 objectid, u8 type) 1162e2749eSChris Mason { 1262e2749eSChris Mason int ret = 0; 1362e2749eSChris Mason struct btrfs_path path; 1462e2749eSChris Mason struct btrfs_dir_item *dir_item; 1562e2749eSChris Mason char *name_ptr; 1662e2749eSChris Mason struct btrfs_key key; 1762e2749eSChris Mason u32 data_size; 1862e2749eSChris Mason 1962e2749eSChris Mason key.objectid = dir; 2062e2749eSChris Mason key.flags = 0; 211d4f6404SChris Mason btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY); 2262e2749eSChris Mason ret = btrfs_name_hash(name, name_len, &key.offset); 2362e2749eSChris Mason BUG_ON(ret); 2462e2749eSChris Mason btrfs_init_path(&path); 2562e2749eSChris Mason data_size = sizeof(*dir_item) + name_len; 2662e2749eSChris Mason ret = btrfs_insert_empty_item(root, &path, &key, data_size); 2762e2749eSChris Mason if (ret) 2862e2749eSChris Mason goto out; 2962e2749eSChris Mason 3062e2749eSChris Mason dir_item = btrfs_item_ptr(&path.nodes[0]->leaf, path.slots[0], 3162e2749eSChris Mason struct btrfs_dir_item); 3262e2749eSChris Mason btrfs_set_dir_objectid(dir_item, objectid); 3362e2749eSChris Mason btrfs_set_dir_type(dir_item, type); 3462e2749eSChris Mason btrfs_set_dir_flags(dir_item, 0); 35a8a2ee0cSChris Mason btrfs_set_dir_name_len(dir_item, name_len); 3662e2749eSChris Mason name_ptr = (char *)(dir_item + 1); 3762e2749eSChris Mason memcpy(name_ptr, name, name_len); 3862e2749eSChris Mason out: 3962e2749eSChris Mason btrfs_release_path(root, &path); 4062e2749eSChris Mason return ret; 4162e2749eSChris Mason } 4262e2749eSChris Mason 431d4f6404SChris Mason int btrfs_lookup_dir_item(struct btrfs_root *root, struct btrfs_path *path, 441d4f6404SChris Mason u64 dir, char *name, int name_len, int mod) 4562e2749eSChris Mason { 461d4f6404SChris Mason int ret; 4762e2749eSChris Mason struct btrfs_key key; 481d4f6404SChris Mason int ins_len = mod < 0 ? -1 : 0; 491d4f6404SChris Mason int cow = mod != 0; 5062e2749eSChris Mason 5162e2749eSChris Mason key.objectid = dir; 5262e2749eSChris Mason key.flags = 0; 531d4f6404SChris Mason btrfs_set_key_type(&key, BTRFS_DIR_ITEM_KEY); 5462e2749eSChris Mason ret = btrfs_name_hash(name, name_len, &key.offset); 5562e2749eSChris Mason BUG_ON(ret); 561d4f6404SChris Mason ret = btrfs_search_slot(root, &key, path, ins_len, cow); 5762e2749eSChris Mason return ret; 5862e2749eSChris Mason } 5962e2749eSChris Mason 601d4f6404SChris Mason int btrfs_match_dir_item_name(struct btrfs_root *root, struct btrfs_path *path, 611d4f6404SChris Mason char *name, int name_len) 6262e2749eSChris Mason { 6362e2749eSChris Mason struct btrfs_dir_item *dir_item; 6462e2749eSChris Mason char *name_ptr; 65a8a2ee0cSChris Mason 661d4f6404SChris Mason dir_item = btrfs_item_ptr(&path->nodes[0]->leaf, path->slots[0], 671d4f6404SChris Mason struct btrfs_dir_item); 68a8a2ee0cSChris Mason if (btrfs_dir_name_len(dir_item) != name_len) 691d4f6404SChris Mason return 0; 70a8a2ee0cSChris Mason name_ptr = (char *)(dir_item + 1); 71a8a2ee0cSChris Mason if (memcmp(name_ptr, name, name_len)) 72a8a2ee0cSChris Mason return 0; 731d4f6404SChris Mason return 1; 7462e2749eSChris Mason } 75