示例#1
0
文件: clnt.go 项目: jeffallen/g
// Connect to a 9P server that is listening at `addr',
// and wrap ctl and data files of a remote serial device
// into a Port.
// Basename is the a file name prefix or directory,
// where the device is expected to be found. It can
// be "", if ctl and data files live in the 9P servers
// root directory
func Connect9P(addr, basename string) (port Port, err error) {
	c, err := clnt.Mount("tcp", addr, "", user.Current())
	if err != nil {
		return
	}
	d := new(dev9)
	d.clnt = c
	if d.data, err = d.clnt.FOpen(basename+"/data", p.ORDWR); err == nil {
		if d.ctl, err = d.clnt.FOpen(basename+"/ctl", p.OWRITE); err != nil {
			goto noctl
		}
	} else if d.data, err = d.clnt.FOpen(basename, p.ORDWR); err == nil {
		if d.ctl, err = d.clnt.FOpen(basename+"ctl", p.OWRITE); err != nil {
			goto noctl
		}
	} else {
		goto unmount
	}
	port = d
	return

noctl:
	d.data.Close()
unmount:
	d.clnt.Unmount()
	return
}
示例#2
0
文件: srv.go 项目: jeffallen/g
// Serve a previously opened serial device via 9P.
// `addr' shoud be of form "host:port", where host
// may be missing.
func Serve9P(addr string, dev Port) (err error) {
	user := user.Current()
	root := new(srv.File)
	err = root.Add(nil, "/", user, nil, p.DMDIR|0555, nil)
	if err != nil {
		return
	}

	c := new(ctl)
	c.dev = dev
	err = c.Add(root, "ctl", user, nil, 0666, c)
	if err != nil {
		return
	}

	d := new(data)
	d.dev = dev
	d.rch = ioutil.ChannelizeReader(dev, nil)
	d.unblockch = make(chan bool)
	c.dataUnblockch = d.unblockch
	err = d.Add(root, "data", user, nil, 0666, d)
	if err != nil {
		return
	}

	s := srv.NewFileSrv(root)
	s.Dotu = true

	switch {
	case Debugall:
		s.Debuglevel = 2
	case Debug:
		s.Debuglevel = 1
	}

	s.Start(s)
	err = s.StartNetListener("tcp", addr)
	return
}