test: assume priv ports start at 1024 if it can't be changed

KrayzeeKev · targos · commit db2ace1f944e · 2023-03-14T07:54:03.000+01:00
An update to test/parallel/test-cluster-bind-privileged-port.js checks the lowest privileged port to ensure 42 is privileged This only works on kernels > 4.1. On older kernels, this is locked at 1024 so the check is not needed. Fixes: #45838 PR-URL: #46536 Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
diff --git a/test/parallel/test-cluster-bind-privileged-port.js b/test/parallel/test-cluster-bind-privileged-port.js
@@ -27,9 +27,14 @@ const net = require('net');
 const { readFileSync } = require('fs');
 
 if (common.isLinux) {
-  const unprivilegedPortStart = parseInt(readFileSync('/proc/sys/net/ipv4/ip_unprivileged_port_start'));
-  if (unprivilegedPortStart <= 42) {
-    common.skip('Port 42 is unprivileged');
+  try {
+    const unprivilegedPortStart = parseInt(readFileSync('/proc/sys/net/ipv4/ip_unprivileged_port_start'));
+    if (unprivilegedPortStart <= 42) {
+      common.skip('Port 42 is unprivileged');
+    }
+  } catch {
+    // Do nothing, feature doesn't exist, minimum is 1024 so 42 is usable.
+    // Continue...
   }
 }
 
