/
run_security.go
116 lines (101 loc) · 3.17 KB
/
run_security.go
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/*
Copyright The containerd 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 main
import (
"strconv"
"strings"
"github.com/containerd/containerd/contrib/apparmor"
"github.com/containerd/containerd/contrib/seccomp"
"github.com/containerd/containerd/oci"
pkgapparmor "github.com/containerd/containerd/pkg/apparmor"
"github.com/containerd/nerdctl/pkg/defaults"
"github.com/containerd/nerdctl/pkg/strutil"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
var privilegedOpts = []oci.SpecOpts{
oci.WithPrivileged,
oci.WithAllDevicesAllowed,
oci.WithHostDevices,
oci.WithNewPrivileges,
}
func generateSecurityOpts(securityOptsMap map[string]string) ([]oci.SpecOpts, error) {
var opts []oci.SpecOpts
if seccompProfile, ok := securityOptsMap["seccomp"]; ok {
if seccompProfile == "" {
return nil, errors.New("invalid security-opt \"seccomp\"")
}
if seccompProfile != "unconfined" {
opts = append(opts, seccomp.WithProfile(seccompProfile))
}
} else {
opts = append(opts, seccomp.WithDefaultProfile())
}
aaSupported := pkgapparmor.HostSupports()
if aaProfile, ok := securityOptsMap["apparmor"]; ok {
if aaProfile == "" {
return nil, errors.New("invalid security-opt \"apparmor\"")
}
if aaProfile != "unconfined" {
if !aaSupported {
logrus.Warnf("The host does not support AppArmor. Ignoring profile %q", aaProfile)
} else {
opts = append(opts, apparmor.WithProfile(aaProfile))
}
}
} else if aaSupported {
opts = append(opts, apparmor.WithDefaultProfile(defaults.AppArmorProfileName))
}
nnp := false
if nnpStr, ok := securityOptsMap["no-new-privileges"]; ok {
if nnpStr == "" {
nnp = true
} else {
var err error
nnp, err = strconv.ParseBool(nnpStr)
if err != nil {
return nil, errors.Wrapf(err, "invalid \"no-new-privileges\" value: %q", nnpStr)
}
}
}
if !nnp {
opts = append(opts, oci.WithNewPrivileges)
}
return opts, nil
}
func generateCapOpts(capAdd, capDrop []string) ([]oci.SpecOpts, error) {
if len(capAdd) == 0 && len(capDrop) == 0 {
return nil, nil
}
var opts []oci.SpecOpts
if strutil.InStringSlice(capDrop, "ALL") {
opts = append(opts, oci.WithCapabilities(nil))
}
if strutil.InStringSlice(capAdd, "ALL") {
opts = append(opts, oci.WithAllCurrentCapabilities)
} else {
var capsAdd []string
for _, c := range capAdd {
capsAdd = append(capsAdd, "CAP_"+strings.ToUpper(c))
}
opts = append(opts, oci.WithAddedCapabilities(capsAdd))
}
if !strutil.InStringSlice(capDrop, "ALL") {
var capsDrop []string
for _, c := range capDrop {
capsDrop = append(capsDrop, "CAP_"+strings.ToUpper(c))
}
opts = append(opts, oci.WithDroppedCapabilities(capsDrop))
}
return opts, nil
}