mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-30 02:00:19 +00:00
105 lines
2.3 KiB
Go
105 lines
2.3 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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)
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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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`
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const cephKeyring = `[client.{{.User}}]
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key = {{.Key}}
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caps mds = "allow {{perms .ReadOnly}} path={{.RootPath}}"
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caps mon = "allow r"
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caps osd = "allow {{perms .ReadOnly}}"
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`
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const (
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cephConfigRoot = "/etc/ceph"
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cephConfigFileName = "ceph.conf"
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cephKeyringFileNameFmt = "ceph.client.%s.keyring"
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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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)
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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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}
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type cephConfigWriter interface {
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writeToFile() error
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}
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type cephConfigData struct {
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Monitors string
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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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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 f.Close()
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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(cephConfigFileName, 0640, cephConfigTempl, d)
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}
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type cephKeyringData struct {
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User, Key string
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RootPath string
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ReadOnly bool
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}
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func (d *cephKeyringData) writeToFile() error {
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return writeCephTemplate(fmt.Sprintf(cephKeyringFileNameFmt, d.User), 0600, cephKeyringTempl, d)
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}
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