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// Copyright 2022 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package unix
import (
"syscall"
)
// KernelVersion returns major and minor kernel version numbers, parsed from
// the syscall.Uname's Release field, or 0, 0 if the version can't be obtained
// or parsed.
//
// Currently only implemented for Linux.
func KernelVersion() (major, minor int) {
var uname syscall.Utsname
if err := syscall.Uname(&uname); err != nil {
return
}
var (
values [2]int
value, vi int
)
for _, c := range uname.Release {
if '0' <= c && c <= '9' {
value = (value * 10) + int(c-'0')
} else {
// Note that we're assuming N.N.N here.
// If we see anything else, we are likely to mis-parse it.
values[vi] = value
vi++
if vi >= len(values) {
break
}
value = 0
}
}
return values[0], values[1]
}
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