SERVER-53278: Define and emit an audit event on system startup

src/mongo/db/audit.cpp

@@ -138,6 +138,8 @@ void mongo::audit::logReplSetReconfig(Client* client,
 
 void mongo::audit::logApplicationMessage(Client* client, StringData msg) {}
 
+void mongo::audit::logStartupOptions(Client* client, const BSONObj& startupOptions) {}
+
 void mongo::audit::logShutdown(Client* client) {}
 
 void mongo::audit::logCreateIndex(Client* client,

src/mongo/db/audit.h

@@ -251,6 +251,11 @@ void logReplSetReconfig(Client* client, const BSONObj* oldConfig, const BSONObj*
  */
 void logApplicationMessage(Client* client, StringData msg);
 
+/**
+ * Logs the options associated with a startup event.
+ */
+void logStartupOptions(Client* client, const BSONObj& startupOptions);
+
 /**
  * Logs the result of a shutdown command.
  */

src/mongo/db/mongod_main.cpp

@@ -359,6 +359,7 @@ ExitCode _initAndListen(ServiceContext* serviceContext, int listenPort) {
 #endif
 
     logProcessDetails(nullptr);
+    audit::logStartupOptions(Client::getCurrent(), serverGlobalParams.parsedOpts);
 
     serviceContext->setServiceEntryPoint(std::make_unique<ServiceEntryPointMongod>(serviceContext));
 

src/mongo/s/mongos_main.cpp

@@ -654,6 +654,7 @@ ExitCode runMongosServer(ServiceContext* serviceContext) {
     ThreadClient tc("mongosMain", serviceContext);
 
     logShardingVersionInfo(nullptr);
+    audit::logStartupOptions(tc.get(), serverGlobalParams.parsedOpts);
 
     // Set up the periodic runner for background job execution
     {