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package testutils
import (
"bytes"
"fmt"
"testing"
"golang.org/x/sys/unix"
)
func getKernelVersion(tb testing.TB) (maj, min, patch uint32) {
tb.Helper()
var uname unix.Utsname
if err := unix.Uname(&uname); err != nil {
tb.Fatalf("getting uname: %s", err)
}
end := bytes.IndexByte(uname.Release[:], 0)
versionStr := uname.Release[:end]
if count, _ := fmt.Sscanf(string(versionStr), "%d.%d.%d", &maj, &min, &patch); count < 2 {
tb.Fatalf("failed to parse kernel version from %s", string(versionStr))
}
return
}
// SkipOnOldKernel skips the test if the host's kernel is lower than the given
// x.y target version.
func SkipOnOldKernel(tb testing.TB, target, reason string) {
maj, min, _ := getKernelVersion(tb)
var maj_t, min_t, patch_t uint32
if count, _ := fmt.Sscanf(target, "%d.%d.%d", &maj_t, &min_t, &patch_t); count < 2 {
tb.Fatalf("failed to parse target version from %s", target)
}
if maj < maj_t || maj == maj_t && min < min_t {
tb.Skipf("host kernel (%d.%d) too old (minimum %d.%d): %s", maj, min, maj_t, min_t, reason)
}
}
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