72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
/*
|
|
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 seutil
|
|
|
|
import (
|
|
"bufio"
|
|
"os"
|
|
|
|
"github.com/opencontainers/selinux/go-selinux"
|
|
)
|
|
|
|
var seTypes map[string]struct{}
|
|
|
|
const typePath = "/etc/selinux/targeted/contexts/customizable_types"
|
|
|
|
func init() {
|
|
seTypes = make(map[string]struct{})
|
|
if !selinux.GetEnabled() {
|
|
return
|
|
}
|
|
f, err := os.Open(typePath)
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer f.Close()
|
|
s := bufio.NewScanner(f)
|
|
for s.Scan() {
|
|
seTypes[s.Text()] = struct{}{}
|
|
}
|
|
}
|
|
|
|
// HasType returns true if the underlying system has the
|
|
// provided selinux type enabled.
|
|
func HasType(name string) bool {
|
|
_, ok := seTypes[name]
|
|
return ok
|
|
}
|
|
|
|
// ChangeToKVM process label
|
|
func ChangeToKVM(l string) (string, error) {
|
|
if l == "" || !selinux.GetEnabled() {
|
|
return "", nil
|
|
}
|
|
proc, _ := selinux.KVMContainerLabels()
|
|
selinux.ReleaseLabel(proc)
|
|
|
|
current, err := selinux.NewContext(l)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
next, err := selinux.NewContext(proc)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
current["type"] = next["type"]
|
|
return current.Get(), nil
|
|
}
|