mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-10 08:20:23 +00:00
134 lines
3.3 KiB
Go
134 lines
3.3 KiB
Go
/*
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Copyright 2018 The Kubernetes 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 cephfs
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import (
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"fmt"
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"os"
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"path"
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"text/template"
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"k8s.io/klog"
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)
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const cephConfig = `[global]
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mon_host = {{.Monitors}}
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auth_cluster_required = cephx
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auth_service_required = cephx
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auth_client_required = cephx
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# Workaround for http://tracker.ceph.com/issues/23446
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fuse_set_user_groups = false
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`
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const cephKeyring = `[client.{{.UserID}}]
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key = {{.Key}}
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`
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const cephSecret = `{{.Key}}` // #nosec
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const (
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cephConfigRoot = "/etc/ceph"
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cephConfigFileNameFmt = "ceph.share.%s.conf"
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cephKeyringFileNameFmt = "ceph.share.%s.client.%s.keyring"
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cephSecretFileNameFmt = "ceph.share.%s.client.%s.secret" // #nosec
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)
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var (
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cephConfigTempl *template.Template
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cephKeyringTempl *template.Template
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cephSecretTempl *template.Template
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)
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func init() {
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fm := map[string]interface{}{
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"perms": func(readOnly bool) string {
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if readOnly {
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return "r"
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}
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return "rw"
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},
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}
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cephConfigTempl = template.Must(template.New("config").Parse(cephConfig))
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cephKeyringTempl = template.Must(template.New("keyring").Funcs(fm).Parse(cephKeyring))
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cephSecretTempl = template.Must(template.New("secret").Parse(cephSecret))
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}
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type cephConfigData struct {
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Monitors string
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VolumeID volumeID
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}
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func writeCephTemplate(fileName string, m os.FileMode, t *template.Template, data interface{}) error {
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// #nosec
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if err := os.MkdirAll(cephConfigRoot, 0755); err != nil {
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return err
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}
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f, err := os.OpenFile(path.Join(cephConfigRoot, fileName), os.O_CREATE|os.O_EXCL|os.O_WRONLY, m)
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if err != nil {
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if os.IsExist(err) {
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return nil
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}
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return err
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}
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defer func() {
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if err := f.Close(); err != nil {
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klog.Errorf("failed to close file %s with error %s", f.Name(), err)
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}
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}()
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return t.Execute(f, data)
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}
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func (d *cephConfigData) writeToFile() error {
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return writeCephTemplate(fmt.Sprintf(cephConfigFileNameFmt, d.VolumeID), 0640, cephConfigTempl, d)
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}
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type cephKeyringData struct {
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UserID, Key string
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VolumeID volumeID
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}
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func (d *cephKeyringData) writeToFile() error {
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return writeCephTemplate(fmt.Sprintf(cephKeyringFileNameFmt, d.VolumeID, d.UserID), 0600, cephKeyringTempl, d)
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}
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type cephSecretData struct {
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UserID, Key string
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VolumeID volumeID
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}
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func (d *cephSecretData) writeToFile() error {
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return writeCephTemplate(fmt.Sprintf(cephSecretFileNameFmt, d.VolumeID, d.UserID), 0600, cephSecretTempl, d)
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}
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func getCephSecretPath(volID volumeID, userID string) string {
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return path.Join(cephConfigRoot, fmt.Sprintf(cephSecretFileNameFmt, volID, userID))
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}
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func getCephKeyringPath(volID volumeID, userID string) string {
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return path.Join(cephConfigRoot, fmt.Sprintf(cephKeyringFileNameFmt, volID, userID))
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}
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func getCephConfPath(volID volumeID) string {
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return path.Join(cephConfigRoot, fmt.Sprintf(cephConfigFileNameFmt, volID))
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}
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