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/*
* strings.go - File containing the functionality initializing directories and
* the global config file.
*
* 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"
"io"
"os"
"github.com/google/fscrypt/actions"
"github.com/google/fscrypt/util"
)
// createGlobalConfig creates (or overwrites) the global config file
func createGlobalConfig(w io.Writer, path string) error {
if !util.IsUserRoot() {
return ErrMustBeRoot
}
// Ask to create or replace the config file
_, err := os.Stat(path)
switch {
case err == nil:
err = askConfirmation(fmt.Sprintf("Replace %q?", path), false, "")
if err == nil {
err = os.Remove(path)
}
case os.IsNotExist(err):
err = askConfirmation(fmt.Sprintf("Create %q?", path), true, "")
}
if err != nil {
return err
}
fmt.Fprintln(w, "Customizing passphrase hashing difficulty for this system...")
err = actions.CreateConfigFile(timeTargetFlag.Value, legacyFlag.Value)
if err != nil {
return err
}
fmt.Fprintf(w, "Created global config file at %q.\n", path)
return nil
}
// setupFilesystem creates the directories for a filesystem to use fscrypt.
func setupFilesystem(w io.Writer, path string) error {
ctx, err := actions.NewContextFromMountpoint(path, nil)
if err != nil {
return err
}
if err = ctx.Mount.Setup(); err != nil {
return err
}
fmt.Fprintf(w, "Metadata directories created at %q.\n", ctx.Mount.BaseDir())
fmt.Fprintf(w, "Filesystem %q (%s) ready for use with %s encryption.\n",
ctx.Mount.Path, ctx.Mount.Device, ctx.Mount.Filesystem)
return nil
}
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