1 files changed, 17 insertions, 0 deletions
diff --git a/src/shared/keyring-util.h b/src/shared/keyring-util.h
new file mode 100644
index 0000000..838e990
--- /dev/null
+++ b/src/shared/keyring-util.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include <sys/types.h>
+
+#include "missing_keyctl.h"
+
+/* TAKE_FD but for key_serial_t instead of fds */
+#define TAKE_KEY_SERIAL(key_serial)                             \
+        ({                                                      \
+                key_serial_t *_key_serialp_ = &(key_serial);    \
+                key_serial_t _key_serial_ = *_key_serialp_;     \
+                *_key_serialp_ = -1;                            \
+                _key_serial_;                                   \
+        })
+
+int keyring_read(key_serial_t serial, void **ret, size_t *ret_size);