Files
cloudpods/pkg/hostman/guestfs/fsdriver/linux_init.go
T
2023-10-02 00:33:18 +08:00

86 lines
2.3 KiB
Go

// Copyright 2019 Yunion
//
// 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 fsdriver
import (
"fmt"
"yunion.io/x/pkg/errors"
"yunion.io/x/onecloud/pkg/util/procutils"
)
const (
unitDirPath = "/usr/lib/systemd/system"
enableDirPath = "/etc/systemd/system/multi-user.target.wants"
)
func (d *sLinuxRootFs) isSupportSystemd() bool {
return d.rootFs.Exists(unitDirPath, false) && d.rootFs.Exists(enableDirPath, false)
}
func (d *sLinuxRootFs) installInitScript(name, cmd string) error {
if d.isSupportSystemd() {
return d.installSystemd(name, cmd)
} else {
return d.installCrond(cmd)
}
}
func (d *sLinuxRootFs) installCrond(cmd string) error {
cronJob := fmt.Sprintf("@reboot %s", cmd)
if procutils.NewCommand("chroot", d.rootFs.GetMountPath(), "crontab", "-l", "|", "grep", cronJob).Run() == nil {
// if cronjob exist, return success
return nil
}
output, err := procutils.NewCommand("chroot", d.rootFs.GetMountPath(), "sh", "-c",
fmt.Sprintf("(crontab -l 2>/dev/null; echo '%s') |crontab -", cronJob),
).Output()
if err != nil {
return errors.Wrapf(err, "add crontab %s", output)
}
return nil
}
func (d *sLinuxRootFs) installSystemd(name, cmd string) error {
var serviceName = fmt.Sprintf("%s.service", name)
var unitPath = fmt.Sprintf("%s/%s", unitDirPath, serviceName)
var enablePath = fmt.Sprintf("%s/%s", enableDirPath, serviceName)
var unitContent = fmt.Sprintf(`[Unit]
Description=Run once
After=local-fs.target
After=network.target
[Service]
ExecStart=%s
RemainAfterExit=true
Type=oneshot
[Install]
WantedBy=multi-user.target
`, cmd)
err := d.rootFs.FilePutContents(unitPath, unitContent, false, false)
if err != nil {
return errors.Wrap(err, "save user_data unit fail")
}
err = d.rootFs.Symlink(unitPath, enablePath, false)
if err != nil {
return errors.Wrap(err, "create user_data symlink fail")
}
return nil
}