51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
|
package runc
|
||
|
|
|
||
|
|
import (
|
||
|
|
"os/exec"
|
||
|
|
"syscall"
|
||
|
|
)
|
||
|
|
|
||
|
|
var Monitor ProcessMonitor = &defaultMonitor{}
|
||
|
|
|
||
|
|
// ProcessMonitor is an interface for process monitoring
|
||
|
|
//
|
||
|
|
// It allows daemons using go-runc to have a SIGCHLD handler
|
||
|
|
// to handle exits without introducing races between the handler
|
||
|
|
// and go's exec.Cmd
|
||
|
|
// These methods should match the methods exposed by exec.Cmd to provide
|
||
|
|
// a consistent experience for the caller
|
||
|
|
type ProcessMonitor interface {
|
||
|
|
Output(*exec.Cmd) ([]byte, error)
|
||
|
|
CombinedOutput(*exec.Cmd) ([]byte, error)
|
||
|
|
Run(*exec.Cmd) error
|
||
|
|
Start(*exec.Cmd) error
|
||
|
|
Wait(*exec.Cmd) (int, error)
|
||
|
|
}
|
||
|
|
|
||
|
|
type defaultMonitor struct {
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m *defaultMonitor) Output(c *exec.Cmd) ([]byte, error) {
|
||
|
|
return c.Output()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m *defaultMonitor) CombinedOutput(c *exec.Cmd) ([]byte, error) {
|
||
|
|
return c.CombinedOutput()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m *defaultMonitor) Run(c *exec.Cmd) error {
|
||
|
|
return c.Run()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m *defaultMonitor) Start(c *exec.Cmd) error {
|
||
|
|
return c.Start()
|
||
|
|
}
|
||
|
|
|
||
|
|
func (m *defaultMonitor) Wait(c *exec.Cmd) (int, error) {
|
||
|
|
status, err := c.Process.Wait()
|
||
|
|
if err != nil {
|
||
|
|
return -1, err
|
||
|
|
}
|
||
|
|
return status.Sys().(syscall.WaitStatus).ExitStatus(), nil
|
||
|
|
}
|