KEYS: Remove key_type::match in favour of overriding default by match_preparse
A previous patch added a ->match_preparse() method to the key type. This is
allowed to override the function called by the iteration algorithm.
Therefore, we can just set a default that simply checks for an exact match of
the key description with the original criterion data and allow match_preparse
to override it as needed.
The key_type::match op is then redundant and can be removed, as can the
user_match() function.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index 10f0a5f..253c9a0 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -89,7 +89,6 @@
.preparse = keyring_preparse,
.free_preparse = keyring_free_preparse,
.instantiate = keyring_instantiate,
- .match = user_match,
.revoke = keyring_revoke,
.destroy = keyring_destroy,
.describe = keyring_describe,
@@ -512,6 +511,15 @@
EXPORT_SYMBOL(keyring_alloc);
/*
+ * By default, we keys found by getting an exact match on their descriptions.
+ */
+int key_default_cmp(const struct key *key,
+ const struct key_match_data *match_data)
+{
+ return strcmp(key->description, match_data->raw_data) == 0;
+}
+
+/*
* Iteration function to consider each key found.
*/
static int keyring_search_iterator(const void *object, void *iterator_data)
@@ -884,7 +892,7 @@
.index_key.type = type,
.index_key.description = description,
.cred = current_cred(),
- .match_data.cmp = type->match,
+ .match_data.cmp = key_default_cmp,
.match_data.raw_data = description,
.match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT,
.flags = KEYRING_SEARCH_DO_STATE_CHECK,
@@ -892,9 +900,6 @@
key_ref_t key;
int ret;
- if (!ctx.match_data.cmp)
- return ERR_PTR(-ENOKEY);
-
if (type->match_preparse) {
ret = type->match_preparse(&ctx.match_data);
if (ret < 0)