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bf03889996
The pg_stat and pg_signal-related functions have been using GetUserId() instead of has_privs_of_role() for checking if the current user should be able to see details in pg_stat_activity or signal other processes, requiring a user to do 'SET ROLE' for inheirited roles for a permissions check, unlike other permissions checks. This patch changes that behavior to, instead, act like most other permission checks and use has_privs_of_role(), removing the 'SET ROLE' need. Documentation and error messages updated accordingly. Per discussion with Alvaro, Peter, Adam (though not using Adam's patch), and Robert. Reviewed by Jeevan Chalke.