pkg/libcontainer/utils/utils.go

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package utils
import (
"crypto/rand"
"encoding/hex"
"io"
"os"
"syscall"
)
func WaitOnPid(pid int) (exitcode int, err error) {
child, err := os.FindProcess(pid)
if err != nil {
return -1, err
}
state, err := child.Wait()
if err != nil {
return -1, err
}
return getExitCode(state), nil
}
func getExitCode(state *os.ProcessState) int {
return state.Sys().(syscall.WaitStatus).ExitStatus()
}
func GenerateRandomName(size int) (string, error) {
id := make([]byte, size)
if _, err := io.ReadFull(rand.Reader, id); err != nil {
return "", err
}
return hex.EncodeToString(id), nil
}