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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <stdint.h>
#include <sys/stat.h>
#include "constants.h"
#include "hashmap.h"
#include "sparse-endian.h"
#define HWDB_SIG { 'K', 'S', 'L', 'P', 'H', 'H', 'R', 'H' }
struct sd_hwdb {
unsigned n_ref;
FILE *f;
struct stat st;
union {
struct trie_header_f *head;
const char *map;
};
OrderedHashmap *properties;
Iterator properties_iterator;
bool properties_modified;
};
/* on-disk trie objects */
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;
} _packed_;
/* array of child entries, follows directly the node record */
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;
} _packed_;
/* array of value entries, follows directly the node record/child array */
struct trie_value_entry_f {
le64_t key_off;
le64_t value_off;
} _packed_;
/* v2 extends v1 with filename and line-number */
struct trie_value_entry2_f {
le64_t key_off;
le64_t value_off;
le64_t filename_off;
le32_t line_number;
le16_t file_priority;
le16_t padding;
} _packed_;
#define hwdb_bin_paths \
"/etc/systemd/hwdb/hwdb.bin\0" \
"/etc/udev/hwdb.bin\0" \
"/usr/lib/systemd/hwdb/hwdb.bin\0" \
UDEVLIBEXECDIR "/hwdb.bin\0"
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