Function isGVisor

packages/cli/src/telemetry/agent_runtime.ts:259–269

* gVisor reports kernel string `4.19.0-gvisor` (current) or `4.4.0` (legacy * Sentry kernel). * * `4.19.0-gvisor` is unambiguous — no real Linux box reports that string. * `4.4.0` collides with Ubuntu 16.04 LTS / older real kernels, so we only * accept it as a gVisor signal when /proc/version A

()

 * accept it as a gVisor signal when /proc/version ALSO contains "gVisor".
 */
function isGVisor(): boolean {
  const kernel = release();
  if (kernel.includes("gvisor")) return true;
  if (platform() !== "linux") return false;
  try {
    const procVersion = readFileSync("/proc/version", "utf-8");
    return procVersion.includes("gVisor");
  } catch {
    return false;
  }
}

function isDocker(): boolean {
  if (existsSync("/.dockerenv")) return true;