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-rw-r--r--security/integrity/platform_certs/platform_keyring.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/security/integrity/platform_certs/platform_keyring.c b/security/integrity/platform_certs/platform_keyring.c
index 79f80af5b470..bcafd7387729 100644
--- a/security/integrity/platform_certs/platform_keyring.c
+++ b/security/integrity/platform_certs/platform_keyring.c
@@ -14,6 +14,29 @@
#include <linux/slab.h>
#include "../integrity.h"
+/**
+ * add_to_platform_keyring - Add to platform keyring without validation.
+ * @source: Source of key
+ * @data: The blob holding the key
+ * @len: The length of the data blob
+ *
+ * Add a key to the platform keyring without checking its trust chain. This
+ * is available only during kernel initialisation.
+ */
+void __init add_to_platform_keyring(const char *source, const void *data,
+ size_t len)
+{
+ key_perm_t perm;
+ int rc;
+
+ perm = (KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW;
+
+ rc = integrity_load_cert(INTEGRITY_KEYRING_PLATFORM, source, data, len,
+ perm);
+ if (rc)
+ pr_info("Error adding keys to platform keyring %s\n", source);
+}
+
/*
* Create the trusted keyrings.
*/