diff options
Diffstat (limited to 'crypto/asymmetric_keys/asymmetric_type.c')
| -rw-r--r-- | crypto/asymmetric_keys/asymmetric_type.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c index eb8cd46961a5..f666b4e8d256 100644 --- a/crypto/asymmetric_keys/asymmetric_type.c +++ b/crypto/asymmetric_keys/asymmetric_type.c @@ -59,9 +59,11 @@ EXPORT_SYMBOL_GPL(asymmetric_keyid_match); * "id:<id>" - request a key matching the ID * "<subtype>:<id>" - request a key of a subtype */ -static int asymmetric_key_match(const struct key *key, const void *description) +static int asymmetric_key_match(const struct key *key, + const struct key_match_data *match_data) { const struct asymmetric_key_subtype *subtype = asymmetric_key_subtype(key); + const char *description = match_data->raw_data; const char *spec = description; const char *id; ptrdiff_t speclen; @@ -94,6 +96,31 @@ static int asymmetric_key_match(const struct key *key, const void *description) } /* + * Preparse the match criterion. If we don't set lookup_type and cmp, + * the default will be an exact match on the key description. + * + * There are some specifiers for matching key IDs rather than by the key + * description: + * + * "id:<id>" - request a key by any available ID + * + * These have to be searched by iteration rather than by direct lookup because + * the key is hashed according to its description. + */ +static int asymmetric_key_match_preparse(struct key_match_data *match_data) +{ + match_data->lookup_type = KEYRING_SEARCH_LOOKUP_ITERATE; + return 0; +} + +/* + * Free the preparsed the match criterion. + */ +static void asymmetric_key_match_free(struct key_match_data *match_data) +{ +} + +/* * Describe the asymmetric key */ static void asymmetric_key_describe(const struct key *key, struct seq_file *m) @@ -196,7 +223,9 @@ struct key_type key_type_asymmetric = { .preparse = asymmetric_key_preparse, .free_preparse = asymmetric_key_free_preparse, .instantiate = generic_key_instantiate, + .match_preparse = asymmetric_key_match_preparse, .match = asymmetric_key_match, + .match_free = asymmetric_key_match_free, .destroy = asymmetric_key_destroy, .describe = asymmetric_key_describe, .def_lookup_type = KEYRING_SEARCH_LOOKUP_ITERATE, |