libcontainer: fix the file mode of the device

libcontainer/devices/devices.go

@@ -54,7 +54,7 @@ func DeviceFromPath(path, permissions string) (*Device, error) {
  Permissions: Permissions(permissions),
  },
  Path: path,
- FileMode: os.FileMode(mode),
+ FileMode: os.FileMode(mode &^ unix.S_IFMT),
  Uid: stat.Uid,
  Gid: stat.Gid,
  }, nil

libcontainer/devices/devices_test.go

@@ -82,22 +82,13 @@ func TestHostDevicesAllValid(t *testing.T) {
  if device.Major == 0 {
  t.Errorf("device entry %+v has zero major number", device)
  }
- // Devices should only have file modes that correspond to their type.
- var expectedType os.FileMode
  switch device.Type {
- case BlockDevice:
- expectedType = unix.S_IFBLK
- case CharDevice:
- expectedType = unix.S_IFCHR
+ case BlockDevice, CharDevice:
  case FifoDevice:
  t.Logf("fifo devices shouldn't show up from HostDevices")
  fallthrough
  default:
  t.Errorf("device entry %+v has unexpected type %v", device, device.Type)
  }
- gotType := device.FileMode & unix.S_IFMT
- if expectedType != gotType {
- t.Errorf("device entry %+v has mismatched types (expected %#x, got %#x)", device, expectedType, gotType)
- }
  }
 }

libcontainer/specconv/spec_linux.go

@@ -698,7 +698,7 @@ next:
  return nil, err
  }
  if d.FileMode != nil {
- filemode = *d.FileMode
+ filemode = *d.FileMode &^ unix.S_IFMT
  }
  device := &devices.Device{
  Rule: devices.Rule{