diff --git a/libc/kernel/uapi/misc/fastrpc.h b/libc/kernel/uapi/misc/fastrpc.h
index 6f99e63..762eefc 100644
--- a/libc/kernel/uapi/misc/fastrpc.h
+++ b/libc/kernel/uapi/misc/fastrpc.h
@@ -24,6 +24,8 @@
 #define FASTRPC_IOCTL_INVOKE _IOWR('R', 3, struct fastrpc_invoke)
 #define FASTRPC_IOCTL_INIT_ATTACH _IO('R', 4)
 #define FASTRPC_IOCTL_INIT_CREATE _IOWR('R', 5, struct fastrpc_init_create)
+#define FASTRPC_IOCTL_MMAP _IOWR('R', 6, struct fastrpc_req_mmap)
+#define FASTRPC_IOCTL_MUNMAP _IOWR('R', 7, struct fastrpc_req_munmap)
 struct fastrpc_invoke_args {
   __u64 ptr;
   __u64 length;
@@ -47,4 +49,15 @@
   __u32 flags;
   __u64 size;
 };
+struct fastrpc_req_mmap {
+  __s32 fd;
+  __u32 flags;
+  __u64 vaddrin;
+  __u64 size;
+  __u64 vaddrout;
+};
+struct fastrpc_req_munmap {
+  __u64 vaddrout;
+  __u64 size;
+};
 #endif