func getKernelVersion() (major, minor int, err error) {
var u syscall.Utsname
if err = syscall.Uname(&u); err != nil {
return
}
// Kernel versions are not always a semver, so we have to do minimal parsing.
release := marshal.FromUtsname(u.Release)
if n, err := fmt.Sscanf(release, "%d.%d", &major, &minor); err != nil || n != 2 {
return 0, 0, fmt.Errorf("Malformed version: %s", release)
}
return
}
"$GITHUB_URI/common/marshal"
"$GITHUB_URI/report"
)
const kb = 1024
// Uname is swappable for mocking in tests.
var Uname = syscall.Uname
// GetKernelVersion returns the kernel version as reported by uname.
var GetKernelVersion = func() (string, error) {
var utsname syscall.Utsname
if err := Uname(&utsname); err != nil {
return "unknown", err
}
release := marshal.FromUtsname(utsname.Release)
version := marshal.FromUtsname(utsname.Version)
return fmt.Sprintf("%s %s", release, version), nil
}
// GetLoad returns the current load averages as metrics.
var GetLoad = func(now time.Time) report.Metrics {
buf, err := ioutil.ReadFile("/proc/loadavg")
if err != nil {
return nil
}
toks := strings.Fields(string(buf))
if len(toks) < 3 {
return nil
}
one, err := strconv.ParseFloat(toks[0], 64)