--- /sys/src/nix/port/sysfile.c
+++ /sys/src/nix/port/sysfile.c
@@ -313,6 +313,15 @@
 }
 
 void
+sysnsec(Ar0* ar0, va_list)
+{
+	/*
+	 * vlong nsec(void);
+	 */
+	ar0->vl = todget(nil);
+}
+
+void
 fdclose(int fd, int flag)
 {
 	int i;
--- /sys/src/nix/mk/parse
+++ /sys/src/nix/mk/parse
@@ -241,6 +241,8 @@
 			t = t "{ .v = (void*)-1 } },\n";
 		else if($2 ~ "^(ALARM|_READ|_WRITE|PREAD|PWRITE)$")
 			t = t "{ .l = -1 } },\n";
+		else if($2 ~ "(NSEC)")
+			t = t "{ .vl = -1LL } },\n";
 		else
 			t = t "{ .i = -1 } },\n";
 	}