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authorDavid Howells <dhowells@redhat.com>2013-09-24 13:35:16 +0400
committerDavid Howells <dhowells@redhat.com>2013-09-24 13:35:16 +0400
commitd0a059cac6523b23ad7d743dec8783705aab1668 (patch)
treef36c92dd61d579c0787ba7278e431852d1455f27 /security/keys
parent4bdf0bc300314141e5475e145acb8b5ad846f00d (diff)
downloadlinux-d0a059cac6523b23ad7d743dec8783705aab1668.tar.xz
KEYS: Search for auth-key by name rather than target key ID
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@redhat.com>
Diffstat (limited to 'security/keys')
-rw-r--r--security/keys/request_key_auth.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index 8d09852854ca..7495a93b4b90 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)) {