func ioctl(fd, request, argp uintptr) error {
return unix.IoctlSetInt(int(fd), int(request), int(argp))
}
// Open opens an asynchronous communications port.
func Open(name string, options ...func(*Term) error) (*Term, error) {
fd, e := syscall.Open(name, syscall.O_NOCTTY|syscall.O_CLOEXEC|syscall.O_NDELAY|syscall.O_RDWR, 0666)
if e != nil {
return nil, &os.PathError{"open", name, e}
}
modules := [2]string{"ptem", "ldterm"}
for _, mod := range modules {
err := unix.IoctlSetInt(fd, C.I_PUSH, int(uintptr(unsafe.Pointer(syscall.StringBytePtr(mod)))))
if err != nil {
return nil, err
}
}
t := Term{name: name, fd: fd}
termios.Tcgetattr(uintptr(t.fd), &t.orig)
if err := termios.Tcgetattr(uintptr(t.fd), &t.orig); err != nil {
return nil, err
}
if err := t.SetOption(options...); err != nil {
return nil, err
}
return &t, syscall.SetNonblock(t.fd, false)
}
func setForegroundGroup(fd, group int) {
unix.IoctlSetInt(fd, unix.TIOCSPGRP, group)
}