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reboot.go
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// Copyright 2015 CoreOS, Inc.
//
// 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"
"os"
"github.com/coreos/go-systemd/login1"
"github.com/flatcar/locksmith/lock"
"github.com/flatcar/locksmith/pkg/machineid"
)
var (
cmdReboot = &Command{
Name: "reboot",
Summary: "Reboot honoring reboot locks.",
Description: `Reboot will attempt to reboot immediately after taking a reboot lock. The user is responsible for unlocking after a successful reboot.`,
Run: runReboot,
}
)
func runReboot(args []string) int {
if os.Geteuid() != 0 {
fmt.Fprintln(os.Stderr, "Must be root to initiate reboot.")
return 1
}
elc, err := getClient()
if err != nil {
fmt.Fprintln(os.Stderr, "Error initializing etcd client:", err)
return 1
}
lgn, err := login1.New()
if err != nil {
fmt.Fprintln(os.Stderr, "Error initializing login connection:", err)
return 1
}
mID := machineid.MachineID("/")
if mID == "" {
fmt.Fprintln(os.Stderr, "Cannot read machine-id")
return 1
}
l := lock.New(mID, elc)
err = l.Lock()
if err != nil {
fmt.Fprintln(os.Stderr, "Error locking:", err)
return 1
}
lgn.Reboot(false)
// TODO(philips): Unlock if the reboot fails.
return 0
}