Merge pull request #4 from robertojrojas/missing_directory

Check for missing directory error condition.

errors.go

@@ -29,6 +29,10 @@ const (
 
  // ErrjailNoFreeJIDFound [EAGAIN] No free JID could be found.
  ErrjailNoFreeJIDFound = eagain
+
+ // ErrJailNoSuchFileDirectory [ENOENT] No such file or directory. A component of a specified pathname
+ // did not exist, or the pathname was an empty string.
+ ErrJailNoSuchFileDirectory = enoent
 )
 
 // The jail_set() system call will fail with one of the below errors

jail.go

@@ -144,6 +144,8 @@ func Jail(o *Opts) (int, error) {
  return 0, fmt.Errorf("invalid version: %d", e1)
  case ErrjailNoFreeJIDFound:
  return 0, fmt.Errorf("no free JID found: %d", e1)
+ case ErrJailNoSuchFileDirectory:
+ return 0, fmt.Errorf("No such file or directory: %s\n", o.Path)
  }
  return 0, fmt.Errorf("%d", e1)
  }