1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
// 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 unimpl contains interface to emit events about unimplemented
// features.
package unimpl
import (
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/log"
)
// contextID is the events package's type for context.Context.Value keys.
type contextID int
const (
// CtxEvents is a Context.Value key for a Events.
CtxEvents contextID = iota
)
// Events interface defines method to emit unsupported events.
type Events interface {
EmitUnimplementedEvent(ctx context.Context, sysno uintptr)
}
// EmitUnimplementedEvent emits unsupported syscall event to the context.
func EmitUnimplementedEvent(ctx context.Context, sysno uintptr) {
e := ctx.Value(CtxEvents)
if e == nil {
log.Warningf("Context.Value(CtxEvents) not present, unimplemented syscall event not reported.")
return
}
e.(Events).EmitUnimplementedEvent(ctx, sysno)
}
|
