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nonblock_bsd.go
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/
nonblock_bsd.go
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// Copyright 2021 The TCell Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use file except in compliance with the License.
// You may obtain a copy of the license at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build darwin || dragonfly || freebsd || netbsd || openbsd
// +build darwin dragonfly freebsd netbsd openbsd
package tcell
import (
"syscall"
"golang.org/x/sys/unix"
)
// BSD systems use TIOC style ioctls.
// tcSetBufParams is used by the tty driver on UNIX systems to configure the
// buffering parameters (minimum character count and minimum wait time in msec.)
// This also waits for output to drain first.
func tcSetBufParams(fd int, vMin uint8, vTime uint8) error {
_ = syscall.SetNonblock(fd, true)
tio, err := unix.IoctlGetTermios(fd, unix.TIOCGETA)
if err != nil {
return err
}
tio.Cc[unix.VMIN] = vMin
tio.Cc[unix.VTIME] = vTime
if err = unix.IoctlSetTermios(fd, unix.TIOCSETAW, tio); err != nil {
return err
}
return nil
}