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https://github.com/ceph/ceph-csi.git
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166eaf700f
Adds encryption in StorageClass as a parameter. Encryption passphrase is stored in kubernetes secrets per StorageClass. Implements rbd volume encryption relying on dm-crypt and cryptsetup using LUKS extension The change is related to proposal made earlier. This is a first part of the full feature that adds encryption with passphrase stored in secrets. Signed-off-by: Vasyl Purchel vasyl.purchel@workday.com Signed-off-by: Andrea Baglioni andrea.baglioni@workday.com Signed-off-by: Ioannis Papaioannou ioannis.papaioannou@workday.com Signed-off-by: Paul Mc Auley paul.mcauley@workday.com Signed-off-by: Sergio de Carvalho sergio.carvalho@workday.com
68 lines
2.1 KiB
Go
68 lines
2.1 KiB
Go
/*
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Copyright 2019 The Ceph-CSI Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"bytes"
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"fmt"
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"os/exec"
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"strings"
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)
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// LuksFormat sets up volume as an encrypted LUKS partition
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func LuksFormat(devicePath, passphrase string) (stdout, stderr []byte, err error) {
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return execCryptsetupCommand(&passphrase, "-q", "luksFormat", "--hash", "sha256", devicePath, "-d", "/dev/stdin")
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}
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// LuksOpen opens LUKS encrypted partition and sets up a mapping
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func LuksOpen(devicePath, mapperFile, passphrase string) (stdout, stderr []byte, err error) {
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return execCryptsetupCommand(&passphrase, "luksOpen", devicePath, mapperFile, "-d", "/dev/stdin")
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}
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// LuksClose removes existing mapping
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func LuksClose(mapperFile string) (stdout, stderr []byte, err error) {
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return execCryptsetupCommand(nil, "luksClose", mapperFile)
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}
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// LuksStatus returns encryption status of a provided device
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func LuksStatus(mapperFile string) (stdout, stderr []byte, err error) {
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return execCryptsetupCommand(nil, "status", mapperFile)
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}
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func execCryptsetupCommand(stdin *string, args ...string) (stdout, stderr []byte, err error) {
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var (
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program = "cryptsetup"
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cmd = exec.Command(program, args...) // nolint: gosec, #nosec
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sanitizedArgs = StripSecretInArgs(args)
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stdoutBuf bytes.Buffer
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stderrBuf bytes.Buffer
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)
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cmd.Stdout = &stdoutBuf
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cmd.Stderr = &stderrBuf
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if stdin != nil {
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cmd.Stdin = strings.NewReader(*stdin)
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}
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if err := cmd.Run(); err != nil {
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return stdoutBuf.Bytes(), stderrBuf.Bytes(), fmt.Errorf("an error (%v)"+
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" occurred while running %s args: %v", err, program, sanitizedArgs)
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}
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return stdoutBuf.Bytes(), nil, nil
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}
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