1// Licensed to Elasticsearch B.V. under one or more contributor 2// license agreements. See the NOTICE file distributed with 3// this work for additional information regarding copyright 4// ownership. Elasticsearch B.V. licenses this file to you under 5// the Apache License, Version 2.0 (the "License"); you may 6// not use this file except in compliance with the License. 7// You may obtain a copy of the License at 8// 9// http://www.apache.org/licenses/LICENSE-2.0 10// 11// Unless required by applicable law or agreed to in writing, 12// software distributed under the License is distributed on an 13// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 14// KIND, either express or implied. See the License for the 15// specific language governing permissions and limitations 16// under the License. 17 18// +build darwin,amd64,cgo 19 20package darwin 21 22import ( 23 "syscall" 24 "time" 25 26 "github.com/pkg/errors" 27) 28 29const kernBoottimeMIB = "kern.boottime" 30 31func BootTime() (time.Time, error) { 32 var tv syscall.Timeval 33 if err := sysctlByName(kernBoottimeMIB, &tv); err != nil { 34 return time.Time{}, errors.Wrap(err, "failed to get host uptime") 35 } 36 37 bootTime := time.Unix(int64(tv.Sec), int64(tv.Usec)*int64(time.Microsecond)) 38 return bootTime, nil 39} 40