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