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/*
* ext4.go - Handles command line processing for fscrypt-ext4.
*
* Copyright 2017 Google Inc.
* Author: Joe Richey (joerichey@google.com)
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package main
import (
"fmt"
"github.com/google/fscrypt/cmd"
)
var (
mountpointArg = &cmd.Argument{
ArgName: "mountpoint",
Usage: "the path to an ext4 filesystem's mountpoint",
}
deviceArg = &cmd.Argument{
ArgName: "device",
Usage: "the path to a device containing an ext4 filesystem",
}
ext4Usage = fmt.Sprintf("(%s | %s) [options]", mountpointArg, deviceArg)
)
func main() { ext4Command.Run() }
var ext4Command = &cmd.Command{
Title: "manage ext4 encryption feature flag",
UsageLines: []string{
fmt.Sprintf("enable %s", ext4Usage),
fmt.Sprintf("disable %s", ext4Usage),
cmd.VersionUsage,
},
SubCommands: []*cmd.Command{enableCommand, disableCommand, cmd.VersionCommand},
Arguments: []*cmd.Argument{mountpointArg, deviceArg},
Flags: []cmd.Flag{cmd.ForceFlag, cmd.VerboseFlag, cmd.HelpFlag},
ManPage: &cmd.ManPage{Name: "fscrypt-ext4", Section: 8},
}
var enableCommand = &cmd.Command{
Name: "enable",
Title: "turn on encryption for an ext4 filesystem",
UsageLines: []string{ext4Usage},
InheritArguments: true,
InheritFlags: true,
Action: func(c *cmd.Context) error { return toggleState(c, true) },
}
var disableCommand = &cmd.Command{
Name: "disable",
Title: "turn off encryption for an ext4 filesystem",
UsageLines: []string{ext4Usage},
InheritArguments: true,
InheritFlags: true,
Action: func(c *cmd.Context) error { return toggleState(c, false) },
}
func toggleState(c *cmd.Context, enable bool) error {
fmt.Fprintf(cmd.Output, "Toggle value = %v", enable)
return nil
}
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