gitee.com/mysnapcore/mysnapd@v0.1.0/secboot/luks2/luks2.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2022 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package luks2
    21  
    22  import (
    23  	"io"
    24  	"os"
    25  )
    26  
    27  var (
    28  	stderr io.Writer = os.Stderr
    29  )
    30  
    31  // SlotPriority represents the priority of a keyslot.
    32  type SlotPriority int
    33  
    34  func (p SlotPriority) String() string {
    35  	switch p {
    36  	case SlotPriorityIgnore:
    37  		return "ignore"
    38  	case SlotPriorityNormal:
    39  		return "normal"
    40  	case SlotPriorityHigh:
    41  		return "prefer"
    42  	default:
    43  		panic("not reached")
    44  	}
    45  }
    46  
    47  const (
    48  	// SlotPriorityIgnore means that cryptsetup will not use the associated
    49  	// keyslot unless it is specified explicitly.
    50  	SlotPriorityIgnore SlotPriority = iota
    51  
    52  	// SlotPriorityNormal is the default keyslot priority.
    53  	SlotPriorityNormal
    54  
    55  	// SlotPriorityHigh means that cryptsetup will try the associated keyslot
    56  	// before it tries any keyslots with a priority of SlotPriorityNormal.
    57  	SlotPriorityHigh
    58  )