[PATCH RFC v2 12/12] integrity: store reference to mok keyring

[Eric Snowberg]

Store a reference to the mok keyring in system keyring code. The
reference is only set when trust_moklist is true.  This prevents the mok
keyring from linking to either the builtin or secondary trusted keyrings
with an empty mok list.

Signed-off-by: Eric Snowberg <eric.snowberg at oracle.com>
---
v2: Initial version
---
 security/integrity/digsig.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index 3a12cc85b528..cf13f4c56517 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -112,6 +112,8 @@ static int __init __integrity_init_keyring(const unsigned int id,
 	} else {
 		if (id == INTEGRITY_KEYRING_PLATFORM)
 			set_platform_trusted_keys(keyring[id]);
+		if (id == INTEGRITY_KEYRING_MOK && trust_moklist())
+			set_mok_trusted_keys(keyring[id]);
 		if (id == INTEGRITY_KEYRING_IMA)
 			load_module_cert(keyring[id]);
 	}
-- 
2.18.4