
This commit adds a set of functions able to look at the contents of various paths related to replication slots: - pg_ls_logicalsnapdir, for pg_logical/snapshots/ - pg_ls_logicalmapdir, for pg_logical/mappings/ - pg_ls_replslotdir, for pg_replslot/<slot_name>/ These are intended to be used by monitoring tools. Unlike pg_ls_dir(), execution permission can be granted to non-superusers. Roles members of pg_monitor gain have access to those functions. Bump catalog version. Author: Bharath Rupireddy Reviewed-by: Nathan Bossart, Justin Pryzby Discussion: https://postgr.es/m/CALj2ACWsfizZjMN6bzzdxOk1ADQQeSw8HhEjhmVXn_Pu+7VzLw@mail.gmail.com