diff --git a/libc/kernel/uapi/linux/seccomp.h b/libc/kernel/uapi/linux/seccomp.h
index db041a3..1fd53fc 100644
--- a/libc/kernel/uapi/linux/seccomp.h
+++ b/libc/kernel/uapi/linux/seccomp.h
@@ -25,12 +25,18 @@
 #define SECCOMP_MODE_FILTER 2
 #define SECCOMP_SET_MODE_STRICT 0
 #define SECCOMP_SET_MODE_FILTER 1
+#define SECCOMP_GET_ACTION_AVAIL 2
 #define SECCOMP_FILTER_FLAG_TSYNC 1
-#define SECCOMP_RET_KILL 0x00000000U
+#define SECCOMP_FILTER_FLAG_LOG 2
+#define SECCOMP_RET_KILL_PROCESS 0x80000000U
+#define SECCOMP_RET_KILL_THREAD 0x00000000U
+#define SECCOMP_RET_KILL SECCOMP_RET_KILL_THREAD
 #define SECCOMP_RET_TRAP 0x00030000U
 #define SECCOMP_RET_ERRNO 0x00050000U
 #define SECCOMP_RET_TRACE 0x7ff00000U
+#define SECCOMP_RET_LOG 0x7ffc0000U
 #define SECCOMP_RET_ALLOW 0x7fff0000U
+#define SECCOMP_RET_ACTION_FULL 0xffff0000U
 #define SECCOMP_RET_ACTION 0x7fff0000U
 #define SECCOMP_RET_DATA 0x0000ffffU
 struct seccomp_data {