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-rw-r--r--security/integrity/ima/ima_mok.c54
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
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+++ 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);
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