Bloody lazy Crapple

No mknodat. Sigh.

tools/utils/file_at_fd_generic.go

@@ -0,0 +1,21 @@
+//go:build !darwin
+
+package utils
+
+import (
+	"fmt"
+	"os"
+
+	"golang.org/x/sys/unix"
+)
+
+var _ = fmt.Print
+
+func mknodAt(parent *os.File, name string, mode uint32, dev int) (err error) {
+	for {
+		if err = unix.Mknodat(int(parent.Fd()), name, mode, dev); err != unix.EINTR {
+			break
+		}
+	}
+	return
+}