Fix max file size check to use getMaxFileSize (elastic#113723)

* Fix max file size check to use getMaxFileSize

* Update docs/changelog/113723.yaml

* CURSE YOU SPOTLESS

Author: prdoyle

docs/changelog/113723.yaml

@@ -0,0 +1,6 @@
+pr: 113723
+summary: Fix max file size check to use `getMaxFileSize`
+area: Infra/Core
+type: bug
+issues:
+ - 113705

server/src/main/java/org/elasticsearch/bootstrap/BootstrapChecks.java

@@ -412,12 +412,12 @@ static class MaxFileSizeCheck implements BootstrapCheck {
 
         @Override
         public BootstrapCheckResult check(BootstrapContext context) {
-            final long maxFileSize = getMaxFileSize();
+            final long maxFileSize = getProcessLimits().maxFileSize();
             if (maxFileSize != Long.MIN_VALUE && maxFileSize != ProcessLimits.UNLIMITED) {
                 final String message = String.format(
                     Locale.ROOT,
                     "max file size [%d] for user [%s] is too low, increase to [unlimited]",
-                    getMaxFileSize(),
+                    maxFileSize,
                     BootstrapInfo.getSystemProperties().get("user.name")
                 );
                 return BootstrapCheckResult.failure(message);
@@ -426,8 +426,8 @@ public BootstrapCheckResult check(BootstrapContext context) {
             }
         }
 
-        long getMaxFileSize() {
-            return NativeAccess.instance().getProcessLimits().maxVirtualMemorySize();
+        protected ProcessLimits getProcessLimits() {
+            return NativeAccess.instance().getProcessLimits();
         }
 
         @Override

server/src/test/java/org/elasticsearch/bootstrap/BootstrapChecksTests.java

@@ -389,8 +389,8 @@ public void testMaxFileSizeCheck() throws NodeValidationException {
         final AtomicLong maxFileSize = new AtomicLong(randomIntBetween(0, Integer.MAX_VALUE));
         final BootstrapChecks.MaxFileSizeCheck check = new BootstrapChecks.MaxFileSizeCheck() {
             @Override
-            long getMaxFileSize() {
-                return maxFileSize.get();
+            protected ProcessLimits getProcessLimits() {
+                return new ProcessLimits(ProcessLimits.UNKNOWN, ProcessLimits.UNKNOWN, maxFileSize.get());
             }
         };