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-rw-r--r--security/keys/user_defined.c33
1 files changed, 0 insertions, 33 deletions
diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index cbda3b2780a1..8e71895b97a7 100644
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -26,7 +26,6 @@
struct key_type key_type_user = {
.name = "user",
.instantiate = user_instantiate,
- .duplicate = user_duplicate,
.update = user_update,
.match = user_match,
.destroy = user_destroy,
@@ -68,42 +67,10 @@ error:
return ret;
} /* end user_instantiate() */
-
EXPORT_SYMBOL_GPL(user_instantiate);
/*****************************************************************************/
/*
- * duplicate a user defined key
- * - both keys' semaphores are locked against further modification
- * - the new key cannot yet be accessed
- */
-int user_duplicate(struct key *key, const struct key *source)
-{
- struct user_key_payload *upayload, *spayload;
- int ret;
-
- /* just copy the payload */
- ret = -ENOMEM;
- upayload = kmalloc(sizeof(*upayload) + source->datalen, GFP_KERNEL);
- if (upayload) {
- spayload = rcu_dereference(source->payload.data);
- BUG_ON(source->datalen != spayload->datalen);
-
- upayload->datalen = key->datalen = spayload->datalen;
- memcpy(upayload->data, spayload->data, key->datalen);
-
- key->payload.data = upayload;
- ret = 0;
- }
-
- return ret;
-
-} /* end user_duplicate() */
-
-EXPORT_SYMBOL_GPL(user_duplicate);
-
-/*****************************************************************************/
-/*
* dispose of the old data from an updated user defined key
*/
static void user_update_rcu_disposal(struct rcu_head *rcu)