diff mbox

[v13,03/10] KEYS: Add a key restriction struct

Message ID 20170330235027.6879-4-mathew.j.martineau@linux.intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Mat Martineau March 30, 2017, 11:50 p.m. UTC 
Key link restrictions require restriction-specific data as well as a
restriction-specific function pointer. As a first step toward replacing
the restrict_link pointer in struct key, define a more general
key_restriction structure that captures the required function, key, and
key type pointers. Key type modules should not be pinned on account of
this key type pointer because the pointer will be cleared by the garbage
collector if the key type is unregistered.

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
---
 include/linux/key.h | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox

Patch

diff --git a/include/linux/key.h b/include/linux/key.h
index 59cad0268fa7..9fd726642846 100644
--- a/include/linux/key.h
+++ b/include/linux/key.h
@@ -131,6 +131,12 @@  typedef int (*key_restrict_link_func_t)(struct key *dest_keyring,
 					const union key_payload *payload,
 					struct key *restriction_key);
 
+struct key_restriction {
+	key_restrict_link_func_t check;
+	struct key *key;
+	struct key_type *keytype;
+};
+
 /*****************************************************************************/
 /*
  * authentication token / access credential / keyring