Add an accessor function to see if the mok list should be trusted.
Signed-off-by: Eric Snowberg <[email protected]>
---
v1: Initial version
v2: Added trust_moklist function
v3: Unmodified from v2
---
security/integrity/integrity.h | 5 +++++
security/integrity/platform_certs/mok_keyring.c | 16 ++++++++++++++++
2 files changed, 21 insertions(+)
diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h
index 60d5c7ba05b2..1fcefceb0da1 100644
--- a/security/integrity/integrity.h
+++ b/security/integrity/integrity.h
@@ -279,6 +279,7 @@ integrity_audit_log_start(struct audit_context *ctx, gfp_t gfp_mask, int type)
void __init add_to_platform_keyring(const char *source, const void *data,
size_t len);
void __init add_to_mok_keyring(const char *source, const void *data, size_t len);
+bool __init trust_moklist(void);
#else
static inline void __init add_to_platform_keyring(const char *source,
const void *data, size_t len)
@@ -287,4 +288,8 @@ static inline void __init add_to_platform_keyring(const char *source,
void __init add_to_mok_keyring(const char *source, const void *data, size_t len)
{
}
+static inline bool __init trust_moklist(void)
+{
+ return false;
+}
#endif
diff --git a/security/integrity/platform_certs/mok_keyring.c b/security/integrity/platform_certs/mok_keyring.c
index f260edac0863..c7820d9136f3 100644
--- a/security/integrity/platform_certs/mok_keyring.c
+++ b/security/integrity/platform_certs/mok_keyring.c
@@ -8,6 +8,8 @@
#include <linux/efi.h>
#include "../integrity.h"
+bool trust_mok;
+
static __init int mok_keyring_init(void)
{
int rc;
@@ -67,3 +69,17 @@ static __init bool uefi_check_trust_mok_keys(void)
*/
return (status == EFI_SUCCESS && (!(attr & EFI_VARIABLE_NON_VOLATILE)));
}
+
+bool __init trust_moklist(void)
+{
+ static bool initialized;
+
+ if (!initialized) {
+ initialized = true;
+
+ if (uefi_check_trust_mok_keys())
+ trust_mok = true;
+ }
+
+ return trust_mok;
+}
--
2.18.4