From 0823d061b0b7f1e20fbfd48bef3c2e093493dbd4 Mon Sep 17 00:00:00 2001 From: Michael Paquier Date: Thu, 29 Sep 2022 15:05:40 +0900 Subject: Introduce SYSTEM_USER MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit SYSTEM_USER is a reserved keyword of the SQL specification that, roughly described, is aimed at reporting some information about the system user who has connected to the database server. It may include implementation-specific information about the means by the user connected, like an authentication method. This commit implements SYSTEM_USER as of auth_method:identity, where "auth_method" is a keyword about the authentication method used to log into the server (like peer, md5, scram-sha-256, gss, etc.) and "identity" is the authentication identity as introduced by 9afffcb (peer sets authn to the OS user name, gss to the user principal, etc.). This format has been suggested by Tom Lane. Note that thanks to d951052, SYSTEM_USER is available to parallel workers. Bump catalog version. Author: Bertrand Drouvot Reviewed-by: Jacob Champion, Joe Conway, Álvaro Herrera, Michael Paquier Discussion: https://postgr.es/m/7e692b8c-0b11-45db-1cad-3afc5b57409f@amazon.com --- src/backend/access/transam/parallel.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'src/backend/access/transam/parallel.c') diff --git a/src/backend/access/transam/parallel.c b/src/backend/access/transam/parallel.c index 8cba888223..ee0985c7ed 100644 --- a/src/backend/access/transam/parallel.c +++ b/src/backend/access/transam/parallel.c @@ -1496,6 +1496,14 @@ ParallelWorkerMain(Datum main_arg) false); RestoreClientConnectionInfo(clientconninfospace); + /* + * Initialize SystemUser now that MyClientConnectionInfo is restored. + * Also ensure that auth_method is actually valid, aka authn_id is not NULL. + */ + if (MyClientConnectionInfo.authn_id) + InitializeSystemUser(MyClientConnectionInfo.authn_id, + hba_authname(MyClientConnectionInfo.auth_method)); + /* Attach to the leader's serializable transaction, if SERIALIZABLE. */ AttachSerializableXact(fps->serializable_xact_handle); -- cgit v1.2.1