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// Copyright 2018 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this 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.
package devpts
import (
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/sentry/kernel"
)
// Terminal is a pseudoterminal.
//
// +stateify savable
type Terminal struct {
// n is the terminal index. It is immutable.
n uint32
// ld is the line discipline of the terminal. It is immutable.
ld *lineDiscipline
// masterKTTY contains the controlling process of the master end of
// this terminal. This field is immutable.
masterKTTY *kernel.TTY
// replicaKTTY contains the controlling process of the replica end of this
// terminal. This field is immutable.
replicaKTTY *kernel.TTY
}
func newTerminal(n uint32) *Terminal {
t := &Terminal{
n: n,
masterKTTY: &kernel.TTY{Index: n},
replicaKTTY: &kernel.TTY{Index: n},
}
t.ld = newLineDiscipline(linux.DefaultReplicaTermios, t)
return t
}
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