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
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
|
// Copyright 2021 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 boot
import (
"encoding/json"
"io"
"os"
"gvisor.dev/gvisor/pkg/fd"
"gvisor.dev/gvisor/pkg/sentry/seccheck"
// Register supported of sinks.
_ "gvisor.dev/gvisor/pkg/sentry/seccheck/sinks/null"
_ "gvisor.dev/gvisor/pkg/sentry/seccheck/sinks/remote"
)
// InitConfig represents the configuration to apply during pod creation. For
// now, it supports setting up a seccheck session.
type InitConfig struct {
TraceSession seccheck.SessionConfig `json:"trace_session"`
}
func setupSeccheck(configFD int, sinkFDs []int) error {
config := fd.New(configFD)
defer config.Close()
initConf, err := loadInitConfig(config)
if err != nil {
return err
}
return initConf.create(sinkFDs)
}
// LoadInitConfig loads an InitConfig struct from a json formatted file.
func LoadInitConfig(path string) (*InitConfig, error) {
config, err := os.Open(path)
if err != nil {
return nil, err
}
defer config.Close()
return loadInitConfig(config)
}
func loadInitConfig(reader io.Reader) (*InitConfig, error) {
decoder := json.NewDecoder(reader)
decoder.DisallowUnknownFields()
init := &InitConfig{}
if err := decoder.Decode(init); err != nil {
return nil, err
}
return init, nil
}
// Setup performs the actions defined in the InitConfig, e.g. setup seccheck
// session.
func (c *InitConfig) Setup() ([]*os.File, error) {
return seccheck.SetupSinks(c.TraceSession.Sinks)
}
func (c *InitConfig) create(sinkFDs []int) error {
for i, sinkFD := range sinkFDs {
if sinkFD >= 0 {
c.TraceSession.Sinks[i].FD = fd.New(sinkFD)
}
}
return seccheck.Create(&c.TraceSession, false)
}
|
