28 lines
606 B
Go
28 lines
606 B
Go
//go:build darwin || freebsd || netbsd || openbsd
|
|
// +build darwin freebsd netbsd openbsd
|
|
|
|
package uptime
|
|
|
|
import (
|
|
"fmt"
|
|
"syscall"
|
|
"time"
|
|
"unsafe"
|
|
|
|
"golang.org/x/sys/unix"
|
|
)
|
|
|
|
func get() (time.Duration, error) {
|
|
out, err := unix.SysctlRaw("kern.boottime")
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
var timeval syscall.Timeval
|
|
if len(out) != int(unsafe.Sizeof(timeval)) {
|
|
return 0, fmt.Errorf("unexpected output of sysctl kern.boottime: %v (len: %d)", out, len(out))
|
|
}
|
|
timeval = *(*syscall.Timeval)(unsafe.Pointer(&out[0]))
|
|
sec, nsec := timeval.Unix()
|
|
return time.Since(time.Unix(sec, nsec)), nil
|
|
}
|