46 lines
1.4 KiB
Go
46 lines
1.4 KiB
Go
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package unimpl contains interface to emit events about unimplemented
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// features.
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package unimpl
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import (
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"gvisor.dev/gvisor/pkg/log"
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"gvisor.dev/gvisor/pkg/sentry/context"
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)
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// contextID is the events package's type for context.Context.Value keys.
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type contextID int
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const (
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// CtxEvents is a Context.Value key for a Events.
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CtxEvents contextID = iota
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)
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// Events interface defines method to emit unsupported events.
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type Events interface {
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EmitUnimplementedEvent(context.Context)
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}
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// EmitUnimplementedEvent emits unsupported syscall event to the context.
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func EmitUnimplementedEvent(ctx context.Context) {
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e := ctx.Value(CtxEvents)
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if e == nil {
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log.Warningf("Context.Value(CtxEvents) not present, unimplemented syscall event not reported.")
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return
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}
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e.(Events).EmitUnimplementedEvent(ctx)
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}
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