mirror of
https://github.com/yunionio/cloudpods.git
synced 2026-10-25 10:16:12 +08:00
51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
// Copyright 2019 Yunion
|
|
//
|
|
// 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 utils
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"os"
|
|
"strconv"
|
|
"strings"
|
|
"syscall"
|
|
)
|
|
|
|
func ReadPidFile(pidFile string) *os.Process {
|
|
data, err := ioutil.ReadFile(pidFile)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
s := strings.TrimSpace(string(data))
|
|
pid, err := strconv.Atoi(s)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
proc, err := os.FindProcess(pid)
|
|
if err != nil {
|
|
return nil
|
|
}
|
|
if err := proc.Signal(syscall.Signal(0)); err != nil {
|
|
return nil
|
|
}
|
|
return proc
|
|
}
|
|
|
|
func WritePidFile(pid int, pidFile string) error {
|
|
data := fmt.Sprintf("%d\n", pid)
|
|
err := ioutil.WriteFile(pidFile, []byte(data), FileModeFile)
|
|
return err
|
|
}
|