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// Copyright 2018 Google LLC
//
// 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 inet
import (
"gvisor.googlesource.com/gvisor/pkg/sentry/context"
)
// contextID is the inet package's type for context.Context.Value keys.
type contextID int
const (
// CtxStack is a Context.Value key for a network stack.
CtxStack contextID = iota
)
// StackFromContext returns the network stack associated with ctx.
func StackFromContext(ctx context.Context) Stack {
if v := ctx.Value(CtxStack); v != nil {
return v.(Stack)
}
return nil
}
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