| 91 | } |
| 92 | |
| 93 | func (r *RuncConfig) commandOutput(args ...string) (data []byte, err error) { |
| 94 | command := r.Command |
| 95 | if command == "" { |
| 96 | command = DefaultCommand |
| 97 | } |
| 98 | cmd := exec.Command(command, args...) |
| 99 | logs.V(9).Infof("start command %v", cmd.Args) |
| 100 | var stdout, stderr bytes.Buffer |
| 101 | cmd.Stdout = &stdout |
| 102 | cmd.Stderr = &stderr |
| 103 | if err := cmd.Start(); err != nil { |
| 104 | if exErr, ok := err.(*exec.Error); ok { |
| 105 | if exErr.Err == exec.ErrNotFound || exErr.Err == os.ErrNotExist { |
| 106 | return nil, fmt.Errorf("runc not installed on system") |
| 107 | } |
| 108 | } |
| 109 | return nil, err |
| 110 | } |
| 111 | |
| 112 | if err := cmd.Wait(); err != nil { |
| 113 | if sysErr, ok := err.(*os.SyscallError); ok { |
| 114 | // ignore error "no child process" |
| 115 | if e := sysErr.Err.(syscall.Errno); e == syscall.ECHILD { |
| 116 | return stdout.Bytes(), nil |
| 117 | } |
| 118 | } else { |
| 119 | logs.Errorf("command [%s] cmd.Wait err %s", cmd.Args, err) |
| 120 | } |
| 121 | logs.V(9).Infof("command %s stdout %s stderr %s", cmd.Args, stdout.Bytes(), stderr.Bytes()) |
| 122 | if exitErr, ok := err.(*exec.ExitError); ok { |
| 123 | if ws, ok := exitErr.Sys().(syscall.WaitStatus); ok { |
| 124 | logs.Errorf("exit code %+v %+v", ws, exitErr) |
| 125 | } |
| 126 | return stderr.Bytes(), fmt.Errorf("runc execution error") |
| 127 | } |
| 128 | return stderr.Bytes(), err |
| 129 | } |
| 130 | return stdout.Bytes(), nil |
| 131 | } |
| 132 | |
| 133 | type CreateOpts struct { |
| 134 | ID string |