1 files changed, 54 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_mok.c b/security/integrity/ima/ima_mok.c
new file mode 100644
index 0000000..18e37f5
--- /dev/null
+++ b/security/integrity/ima/ima_mok.c
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2015 Juniper Networks, Inc.
+ *
+ * Author:
+ * Petko Manolov <petko.manolov@konsulko.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, version 2 of the
+ * License.
+ *
+ */
+
+#include <linux/export.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/cred.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <keys/asymmetric-type.h>
+
+
+struct key *ima_mok_keyring;
+struct key *ima_blacklist_keyring;
+
+/*
+ * Allocate the IMA MOK and blacklist keyrings
+ */
+__init int ima_mok_init(void)
+{
+	pr_notice("Allocating IMA MOK and blacklist keyrings.\n");
+
+	ima_mok_keyring = keyring_alloc(".ima_mok",
+			      KUIDT_INIT(0), KGIDT_INIT(0), current_cred(),
+			      (KEY_POS_ALL & ~KEY_POS_SETATTR) |
+			      KEY_USR_VIEW | KEY_USR_READ |
+			      KEY_USR_WRITE | KEY_USR_SEARCH,
+			      KEY_ALLOC_NOT_IN_QUOTA, NULL);
+
+	ima_blacklist_keyring = keyring_alloc(".ima_blacklist",
+				KUIDT_INIT(0), KGIDT_INIT(0), current_cred(),
+				(KEY_POS_ALL & ~KEY_POS_SETATTR) |
+				KEY_USR_VIEW | KEY_USR_READ |
+				KEY_USR_WRITE | KEY_USR_SEARCH,
+				KEY_ALLOC_NOT_IN_QUOTA, NULL);
+
+	if (IS_ERR(ima_mok_keyring) || IS_ERR(ima_blacklist_keyring))
+		panic("Can't allocate IMA MOK or blacklist keyrings.");
+	set_bit(KEY_FLAG_TRUSTED_ONLY, &ima_mok_keyring->flags);
+	set_bit(KEY_FLAG_TRUSTED_ONLY, &ima_blacklist_keyring->flags);
+	return 0;
+}
+
+module_init(ima_mok_init);