Refactor tty code into its own package

tools/utils/io.go

@@ -2,13 +2,26 @@ package utils
 
 import (
 	"io"
+	"syscall"
 	"time"
+
+	"golang.org/x/sys/unix"
 )
 
 const (
 	DEFAULT_IO_BUFFER_SIZE = 8192
 )
 
+func NsecToTimespec(d time.Duration) unix.Timespec {
+	nv := syscall.NsecToTimespec(int64(d))
+	return unix.Timespec{Sec: nv.Sec, Nsec: nv.Nsec}
+}
+
+func NsecToTimeval(d time.Duration) unix.Timeval {
+	nv := syscall.NsecToTimeval(int64(d))
+	return unix.Timeval{Sec: nv.Sec, Usec: nv.Usec}
+}
+
 type BytesReader struct {
 	Data []byte
 }