1 package main
2
3 import (
4 "encoding/json"
5 "fmt"
6
7 "github.com/opencontainers/runc/libcontainer/capabilities"
8 "github.com/opencontainers/runc/libcontainer/configs"
9 "github.com/opencontainers/runc/libcontainer/seccomp"
10 "github.com/opencontainers/runc/libcontainer/specconv"
11 "github.com/opencontainers/runc/types/features"
12 "github.com/opencontainers/runtime-spec/specs-go"
13 "github.com/urfave/cli"
14 )
15
16 var featuresCommand = cli.Command{
17 Name: "features",
18 Usage: "show the enabled features",
19 ArgsUsage: "",
20 Description: `Show the enabled features.
21 The result is parsable as a JSON.
22 See https://pkg.go.dev/github.com/opencontainers/runc/types/features for the type definition.
23 The types are experimental and subject to change.
24 `,
25 Action: func(context *cli.Context) error {
26 if err := checkArgs(context, 0, exactArgs); err != nil {
27 return err
28 }
29
30 tru := true
31
32 feat := features.Features{
33 OCIVersionMin: "1.0.0",
34 OCIVersionMax: specs.Version,
35 Annotations: map[string]string{
36 features.AnnotationRuncVersion: version,
37 features.AnnotationRuncCommit: gitCommit,
38 features.AnnotationRuncCheckpointEnabled: "true",
39 },
40 Hooks: configs.KnownHookNames(),
41 MountOptions: specconv.KnownMountOptions(),
42 Linux: &features.Linux{
43 Namespaces: specconv.KnownNamespaces(),
44 Capabilities: capabilities.KnownCapabilities(),
45 Cgroup: &features.Cgroup{
46 V1: &tru,
47 V2: &tru,
48 Systemd: &tru,
49 SystemdUser: &tru,
50 },
51 Apparmor: &features.Apparmor{
52 Enabled: &tru,
53 },
54 Selinux: &features.Selinux{
55 Enabled: &tru,
56 },
57 },
58 }
59
60 if seccomp.Enabled {
61 feat.Linux.Seccomp = &features.Seccomp{
62 Enabled: &tru,
63 Actions: seccomp.KnownActions(),
64 Operators: seccomp.KnownOperators(),
65 Archs: seccomp.KnownArchs(),
66 }
67 major, minor, patch := seccomp.Version()
68 feat.Annotations[features.AnnotationLibseccompVersion] = fmt.Sprintf("%d.%d.%d", major, minor, patch)
69 }
70
71 enc := json.NewEncoder(context.App.Writer)
72 enc.SetIndent("", " ")
73 return enc.Encode(feat)
74 },
75 }
76
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