Prevent golang to set the non-block flag on ptmx open to avoid 100% C…

…PU usage on reads (#53) Signed-off-by: Guillaume J. Charmes <[email protected]>
creack · Oct 6, 2017 · 95d05c1 · 95d05c1
1 parent 2c10821
commit 95d05c1
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/pty_darwin.go b/pty_darwin.go
@@ -8,10 +8,11 @@ import (
 )
 
 func open() (pty, tty *os.File, err error) {
-	p, err := os.OpenFile("/dev/ptmx", os.O_RDWR, 0)
+	pFD, err := syscall.Open("/dev/ptmx", syscall.O_RDWR|syscall.O_CLOEXEC, 0)
 	if err != nil {
 		return nil, nil, err
 	}
+	p := os.NewFile(uintptr(pFD), "/dev/ptmx")
 
 	sname, err := ptsname(p)
 	if err != nil {