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path: root/src/libsystemd/sd-hwdb/sd-hwdb.c
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Diffstat (limited to 'src/libsystemd/sd-hwdb/sd-hwdb.c')
-rw-r--r--src/libsystemd/sd-hwdb/sd-hwdb.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/src/libsystemd/sd-hwdb/sd-hwdb.c b/src/libsystemd/sd-hwdb/sd-hwdb.c
index 062fa97b17..fb9522959f 100644
--- a/src/libsystemd/sd-hwdb/sd-hwdb.c
+++ b/src/libsystemd/sd-hwdb/sd-hwdb.c
@@ -97,15 +97,20 @@ static void linebuf_rem_char(struct linebuf *buf) {
linebuf_rem(buf, 1);
}
-static const struct trie_child_entry_f *trie_node_children(sd_hwdb *hwdb, const struct trie_node_f *node) {
- return (const struct trie_child_entry_f *)((const char *)node + le64toh(hwdb->head->node_size));
+static const struct trie_child_entry_f *trie_node_child(sd_hwdb *hwdb, const struct trie_node_f *node, size_t idx) {
+ const char *base = (const char *)node;
+
+ base += le64toh(hwdb->head->node_size);
+ base += idx * le64toh(hwdb->head->child_entry_size);
+ return (const struct trie_child_entry_f *)base;
}
-static const struct trie_value_entry_f *trie_node_values(sd_hwdb *hwdb, const struct trie_node_f *node) {
+static const struct trie_value_entry_f *trie_node_value(sd_hwdb *hwdb, const struct trie_node_f *node, size_t idx) {
const char *base = (const char *)node;
base += le64toh(hwdb->head->node_size);
base += node->children_count * le64toh(hwdb->head->child_entry_size);
+ base += idx * le64toh(hwdb->head->value_entry_size);
return (const struct trie_value_entry_f *)base;
}
@@ -129,7 +134,7 @@ static const struct trie_node_f *node_lookup_f(sd_hwdb *hwdb, const struct trie_
struct trie_child_entry_f search;
search.c = c;
- child = bsearch(&search, trie_node_children(hwdb, node), node->children_count,
+ child = bsearch(&search, (const char *)node + le64toh(hwdb->head->node_size), node->children_count,
le64toh(hwdb->head->child_entry_size), trie_children_cmp_f);
if (child)
return trie_node_from_off(hwdb, child->child_off);
@@ -177,7 +182,7 @@ static int trie_fnmatch_f(sd_hwdb *hwdb, const struct trie_node_f *node, size_t
linebuf_add(buf, prefix + p, len);
for (i = 0; i < node->children_count; i++) {
- const struct trie_child_entry_f *child = &trie_node_children(hwdb, node)[i];
+ const struct trie_child_entry_f *child = trie_node_child(hwdb, node, i);
linebuf_add_char(buf, child->c);
err = trie_fnmatch_f(hwdb, trie_node_from_off(hwdb, child->child_off), 0, buf, search);
@@ -188,8 +193,8 @@ static int trie_fnmatch_f(sd_hwdb *hwdb, const struct trie_node_f *node, size_t
if (le64toh(node->values_count) && fnmatch(linebuf_get(buf), search, 0) == 0)
for (i = 0; i < le64toh(node->values_count); i++) {
- err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_values(hwdb, node)[i].key_off),
- trie_string(hwdb, trie_node_values(hwdb, node)[i].value_off));
+ err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_value(hwdb, node, i)->key_off),
+ trie_string(hwdb, trie_node_value(hwdb, node, i)->value_off));
if (err < 0)
return err;
}
@@ -254,8 +259,8 @@ static int trie_search_f(sd_hwdb *hwdb, const char *search) {
size_t n;
for (n = 0; n < le64toh(node->values_count); n++) {
- err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_values(hwdb, node)[n].key_off),
- trie_string(hwdb, trie_node_values(hwdb, node)[n].value_off));
+ err = hwdb_add_property(hwdb, trie_string(hwdb, trie_node_value(hwdb, node, n)->key_off),
+ trie_string(hwdb, trie_node_value(hwdb, node, n)->value_off));
if (err < 0)
return err;
}