1 files changed, 18 insertions, 0 deletions
diff --git a/security/landlock/tsync.h b/security/landlock/tsync.h
new file mode 100644
index 000000000..2ae4f938c
--- /dev/null
+++ b/security/landlock/tsync.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Landlock - Cross-thread ruleset enforcement
+ *
+ * Copyright © 2025 Google LLC
+ */
+
+#ifndef _SECURITY_LANDLOCK_TSYNC_H
+#define _SECURITY_LANDLOCK_TSYNC_H
+
+#include <linux/cred.h>
+#include <linux/types.h>
+
+int landlock_restrict_sibling_threads(const struct cred *old_cred,
+				      const struct cred *new_cred,
+				      u32 restrict_flags);
+
+#endif /* _SECURITY_LANDLOCK_TSYNC_H */