summaryrefslogtreecommitdiff
path: root/src/udev/udev-hwdb.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/udev/udev-hwdb.h')
-rw-r--r--src/udev/udev-hwdb.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/src/udev/udev-hwdb.h b/src/udev/udev-hwdb.h
new file mode 100644
index 0000000000..8a9955eb60
--- /dev/null
+++ b/src/udev/udev-hwdb.h
@@ -0,0 +1,69 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2012 Kay Sievers <kay.sievers@vrfy.org>
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "sparse-endian.h"
+
+#define HWDB_SIG { 'K', 'S', 'L', 'P', 'H', 'H', 'R', 'H' }
+
+/* on-disk trie objects */
+_packed_ struct trie_header_f {
+ uint8_t signature[8];
+
+ /* version of tool which created the file */
+ le64_t tool_version;
+ le64_t file_size;
+
+ /* size of structures to allow them to grow */
+ le64_t header_size;
+ le64_t node_size;
+ le64_t child_entry_size;
+ le64_t value_entry_size;
+
+ /* offset of the root trie node */
+ le64_t nodes_root_off;
+
+ /* size of the nodes and string section */
+ le64_t nodes_len;
+ le64_t strings_len;
+};
+
+_packed_ struct trie_node_f {
+ /* prefix of lookup string, shared by all children */
+ le64_t prefix_off;
+ /* size of children entry array appended to the node */
+ uint8_t children_count;
+ uint8_t padding[7];
+ /* size of value entry array appended to the node */
+ le64_t values_count;
+};
+
+/* array of child entries, follows directly the node record */
+_packed_ struct trie_child_entry_f {
+ /* index of the child node */
+ uint8_t c;
+ uint8_t padding[7];
+ /* offset of the child node */
+ le64_t child_off;
+};
+
+/* array of value entries, follows directly the node record/child array */
+_packed_ struct trie_value_entry_f {
+ le64_t key_off;
+ le64_t value_off;
+};