61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
// +build darwin
|
|
|
|
/*
|
|
Copyright The containerd Authors.
|
|
|
|
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.
|
|
*/
|
|
|
|
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
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 util
|
|
|
|
import (
|
|
"fmt"
|
|
"syscall"
|
|
"time"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
// GetBootTime returns the time at which the machine was started, truncated to the nearest second
|
|
func GetBootTime() (time.Time, error) {
|
|
output, err := unix.SysctlRaw("kern.boottime")
|
|
if err != nil {
|
|
return time.Time{}, err
|
|
}
|
|
var timeval syscall.Timeval
|
|
if len(output) != int(unsafe.Sizeof(timeval)) {
|
|
return time.Time{}, fmt.Errorf("unexpected output when calling syscall kern.bootime. Expected len(output) to be %v, but got %v",
|
|
int(unsafe.Sizeof(timeval)), len(output))
|
|
}
|
|
timeval = *(*syscall.Timeval)(unsafe.Pointer(&output[0]))
|
|
sec, nsec := timeval.Unix()
|
|
return time.Unix(sec, nsec).Truncate(time.Second), nil
|
|
}
|