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package nsinit
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
)
// StateWriter handles writing and deleting the pid file
// on disk
type StateWriter interface {
WritePid(pid int, startTime string) error
DeletePid() error
}
type DefaultStateWriter struct {
Root string
}
// writePidFile writes the namespaced processes pid to pid in the rootfs for the container
func (d *DefaultStateWriter) WritePid(pid int, startTime string) error {
err := ioutil.WriteFile(filepath.Join(d.Root, "pid"), []byte(fmt.Sprint(pid)), 0655)
if err != nil {
return err
}
return ioutil.WriteFile(filepath.Join(d.Root, "start"), []byte(startTime), 0655)
}
func (d *DefaultStateWriter) DeletePid() error {
err := os.Remove(filepath.Join(d.Root, "pid"))
if serr := os.Remove(filepath.Join(d.Root, "start")); err == nil {
err = serr
}
return err
}
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