github.com/kubiko/snapd@v0.0.0-20201013125620-d4f3094d9ddf/bootloader/androidboot.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2017 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 bootloader
    21  
    22  import (
    23  	"os"
    24  	"path/filepath"
    25  
    26  	"github.com/snapcore/snapd/bootloader/androidbootenv"
    27  	"github.com/snapcore/snapd/snap"
    28  )
    29  
    30  type androidboot struct {
    31  	rootdir string
    32  }
    33  
    34  // newAndroidboot creates a new Androidboot bootloader object
    35  func newAndroidBoot(rootdir string, _ *Options) Bootloader {
    36  	a := &androidboot{rootdir: rootdir}
    37  	return a
    38  }
    39  
    40  func (a *androidboot) Name() string {
    41  	return "androidboot"
    42  }
    43  
    44  func (a *androidboot) setRootDir(rootdir string) {
    45  	a.rootdir = rootdir
    46  }
    47  
    48  func (a *androidboot) dir() string {
    49  	if a.rootdir == "" {
    50  		panic("internal error: unset rootdir")
    51  	}
    52  	return filepath.Join(a.rootdir, "/boot/androidboot")
    53  }
    54  
    55  func (a *androidboot) InstallBootConfig(gadgetDir string, opts *Options) (bool, error) {
    56  	gadgetFile := filepath.Join(gadgetDir, a.Name()+".conf")
    57  	systemFile := a.ConfigFile()
    58  	return genericInstallBootConfig(gadgetFile, systemFile)
    59  }
    60  
    61  func (a *androidboot) ConfigFile() string {
    62  	return filepath.Join(a.dir(), "androidboot.env")
    63  }
    64  
    65  func (a *androidboot) GetBootVars(names ...string) (map[string]string, error) {
    66  	env := androidbootenv.NewEnv(a.ConfigFile())
    67  	if err := env.Load(); err != nil {
    68  		return nil, err
    69  	}
    70  
    71  	out := make(map[string]string, len(names))
    72  	for _, name := range names {
    73  		out[name] = env.Get(name)
    74  	}
    75  
    76  	return out, nil
    77  }
    78  
    79  func (a *androidboot) SetBootVars(values map[string]string) error {
    80  	env := androidbootenv.NewEnv(a.ConfigFile())
    81  	if err := env.Load(); err != nil && !os.IsNotExist(err) {
    82  		return err
    83  	}
    84  	for k, v := range values {
    85  		env.Set(k, v)
    86  	}
    87  	return env.Save()
    88  }
    89  
    90  func (a *androidboot) ExtractKernelAssets(s snap.PlaceInfo, snapf snap.Container) error {
    91  	return nil
    92  
    93  }
    94  
    95  func (a *androidboot) RemoveKernelAssets(s snap.PlaceInfo) error {
    96  	return nil
    97  }