Search for auth-key by name rather than by target key ID as, in a future
patch, we'll by searching directly by index key in preference to iteration
over all keys.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---
security/keys/request_key_auth.c | 21 +++++++--------------
1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index 8d09852..7495a93 100644
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -18,6 +18,7 @@
#include <linux/slab.h>
#include <asm/uaccess.h>
#include "internal.h"
+#include <keys/user-type.h>
static int request_key_auth_instantiate(struct key *,
struct key_preparsed_payload *);
@@ -222,33 +223,25 @@ error_alloc:
}
/*
- * See if an authorisation key is associated with a particular key.
- */
-static int key_get_instantiation_authkey_match(const struct key *key,
- const void *_id)
-{
- struct request_key_auth *rka = key->payload.data;
- key_serial_t id = (key_serial_t)(unsigned long) _id;
-
- return rka->target_key->serial == id;
-}
-
-/*
* Search the current process's keyrings for the authorisation key for
* instantiation of a key.
*/
struct key *key_get_instantiation_authkey(key_serial_t target_id)
{
+ char description[16];
struct keyring_search_context ctx = {
.index_key.type = &key_type_request_key_auth,
+ .index_key.description = description,
.cred = current_cred(),
- .match = key_get_instantiation_authkey_match,
- .match_data = (void *)(unsigned long)target_id,
+ .match = user_match,
+ .match_data = description,
.flags = KEYRING_SEARCH_LOOKUP_DIRECT,
};
struct key *authkey;
key_ref_t authkey_ref;
+ sprintf(description, "%x", target_id);
+
authkey_ref = search_process_keyrings(&ctx);
if (IS_ERR(authkey_ref)) {
--
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