From 0a7ccee8fe9ffaff09ad45f4890a3457c69e80b7 Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sun, 17 Jul 2022 17:27:50 -0400 Subject: postgres_fdw: set search_path to 'pg_catalog' while deparsing constants. The motivation for this is to ensure successful transmission of the values of constants of regconfig and other reg* types. The remote will be reading them with search_path = 'pg_catalog', so schema qualification is necessary when referencing objects in other schemas. Per bug #17483 from Emmanuel Quincerot. Back-patch to all supported versions. (There's some other stuff to do here, but it's less back-patchable.) Discussion: https://postgr.es/m/1423433.1652722406@sss.pgh.pa.us --- contrib/postgres_fdw/postgres_fdw.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'contrib/postgres_fdw/postgres_fdw.c') diff --git a/contrib/postgres_fdw/postgres_fdw.c b/contrib/postgres_fdw/postgres_fdw.c index 955a428e3da..f3b93954eea 100644 --- a/contrib/postgres_fdw/postgres_fdw.c +++ b/contrib/postgres_fdw/postgres_fdw.c @@ -3896,6 +3896,14 @@ set_transmission_modes(void) PGC_USERSET, PGC_S_SESSION, GUC_ACTION_SAVE, true, 0, false); + /* + * In addition force restrictive search_path, in case there are any + * regproc or similar constants to be printed. + */ + (void) set_config_option("search_path", "pg_catalog", + PGC_USERSET, PGC_S_SESSION, + GUC_ACTION_SAVE, true, 0, false); + return nestlevel; } -- cgit v1.2.3