mirror of
https://github.com/containers/podman.git
synced 2025-11-30 18:18:18 +08:00
41 lines
1.2 KiB
Go
41 lines
1.2 KiB
Go
// Copyright 2018 psgo 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 proc
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
// ParseAttrCurrent returns the contents of /proc/$pid/attr/current of "?" if
|
|
// labeling is not supported on the host.
|
|
func ParseAttrCurrent(pid string) (string, error) {
|
|
data, err := os.ReadFile(fmt.Sprintf("/proc/%s/attr/current", pid))
|
|
if err != nil {
|
|
_, err = os.Stat(fmt.Sprintf("/proc/%s", pid))
|
|
if errors.Is(err, os.ErrNotExist) || errors.Is(err, unix.ESRCH) {
|
|
// PID doesn't exist
|
|
return "", err
|
|
}
|
|
// PID exists but labeling seems to be unsupported
|
|
return "?", nil
|
|
}
|
|
return strings.Trim(string(data), "\n"), nil
|
|
}
|