2 This file is part of systemd.
4 Copyright 2012 Kay Sievers <kay@vrfy.org>
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
21 #include "sparse-endian.h"
23 #define HWDB_SIG { 'K', 'S', 'L', 'P', 'H', 'H', 'R', 'H' }
25 /* on-disk trie objects */
26 struct trie_header_f {
29 /* version of tool which created the file */
33 /* size of structures to allow them to grow */
36 le64_t child_entry_size;
37 le64_t value_entry_size;
39 /* offset of the root trie node */
40 le64_t nodes_root_off;
42 /* size of the nodes and string section */
48 /* prefix of lookup string, shared by all children */
50 /* size of children entry array appended to the node */
51 uint8_t children_count;
53 /* size of value entry array appended to the node */
57 /* array of child entries, follows directly the node record */
58 struct trie_child_entry_f {
59 /* index of the child node */
62 /* offset of the child node */
66 /* array of value entries, follows directly the node record/child array */
67 struct trie_value_entry_f {