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-rw-r--r--security/keys/user_defined.c41
1 files changed, 22 insertions, 19 deletions
diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c
index faa2caeb593f..eee340011f2b 100644
--- a/security/keys/user_defined.c
+++ b/security/keys/user_defined.c
@@ -27,7 +27,9 @@ static int logon_vet_description(const char *desc);
struct key_type key_type_user = {
.name = "user",
.def_lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT,
- .instantiate = user_instantiate,
+ .preparse = user_preparse,
+ .free_preparse = user_free_preparse,
+ .instantiate = generic_key_instantiate,
.update = user_update,
.match = user_match,
.revoke = user_revoke,
@@ -47,7 +49,9 @@ EXPORT_SYMBOL_GPL(key_type_user);
struct key_type key_type_logon = {
.name = "logon",
.def_lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT,
- .instantiate = user_instantiate,
+ .preparse = user_preparse,
+ .free_preparse = user_free_preparse,
+ .instantiate = generic_key_instantiate,
.update = user_update,
.match = user_match,
.revoke = user_revoke,
@@ -58,38 +62,37 @@ struct key_type key_type_logon = {
EXPORT_SYMBOL_GPL(key_type_logon);
/*
- * instantiate a user defined key
+ * Preparse a user defined key payload
*/
-int user_instantiate(struct key *key, struct key_preparsed_payload *prep)
+int user_preparse(struct key_preparsed_payload *prep)
{
struct user_key_payload *upayload;
size_t datalen = prep->datalen;
- int ret;
- ret = -EINVAL;
if (datalen <= 0 || datalen > 32767 || !prep->data)
- goto error;
-
- ret = key_payload_reserve(key, datalen);
- if (ret < 0)
- goto error;
+ return -EINVAL;
- ret = -ENOMEM;
upayload = kmalloc(sizeof(*upayload) + datalen, GFP_KERNEL);
if (!upayload)
- goto error;
+ return -ENOMEM;
/* attach the data */
+ prep->quotalen = datalen;
+ prep->payload[0] = upayload;
upayload->datalen = datalen;
memcpy(upayload->data, prep->data, datalen);
- rcu_assign_keypointer(key, upayload);
- ret = 0;
-
-error:
- return ret;
+ return 0;
}
+EXPORT_SYMBOL_GPL(user_preparse);
-EXPORT_SYMBOL_GPL(user_instantiate);
+/*
+ * Free a preparse of a user defined key payload
+ */
+void user_free_preparse(struct key_preparsed_payload *prep)
+{
+ kfree(prep->payload[0]);
+}
+EXPORT_SYMBOL_GPL(user_free_preparse);
/*
* update a user defined key

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