Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 89 insertions, 0 deletions

diff --git a/src/libsystemd/sd-hwdb/hwdb-internal.h b/src/libsystemd/sd-hwdb/hwdb-internal.h
new file mode 100644
index 0000000..9db3b31
--- /dev/null
+++ b/src/libsystemd/sd-hwdb/hwdb-internal.h
@@ -0,0 +1,89 @@
+/* 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"