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Use has_privs_for_roles for predefined role checks

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Generally if a role is granted membership to another role with NOINHERIT
they must use SET ROLE to access the privileges of that role, however
with predefined roles the membership and privilege is conflated. Fix that
by replacing is_member_of_role with has_privs_for_role for predefined
roles. Patch does not remove is_member_of_role from acl.h, but it does
add a warning not to use that function for privilege checking. Not
backpatched based on hackers list discussion.

Author: Joshua Brindle
Reviewed-by: Stephen Frost, Nathan Bossart, Joe Conway
Discussion: https://postgr.es/m/flat/CAGB+Vh4Zv_TvKt2tv3QNS6tUM_F_9icmuj0zjywwcgVi4PAhFA@mail.gmail.com
This commit is contained in:
Joe Conway
2022-03-28 15:10:04 -04:00
parent 79de9842ab
commit 6198420ad8
23 changed files with 68 additions and 64 deletions
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8
src/backend/replication/walsender.c
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@@ -3473,12 +3473,12 @@ pg_stat_get_wal_senders(PG_FUNCTION_ARGS)
memset(nulls, 0, sizeof(nulls));
values[0] = Int32GetDatum(pid);
if (!is_member_of_role(GetUserId(), ROLE_PG_READ_ALL_STATS))
if (!has_privs_of_role(GetUserId(), ROLE_PG_READ_ALL_STATS))
{
/*
* Only superusers and members of pg_read_all_stats can see
* details. Other users only get the pid value to know it's a
* walsender, but no details.
* Only superusers and roles with privileges of pg_read_all_stats
* can see details. Other users only get the pid value to know
* it's a walsender, but no details.
*/
MemSet(&nulls[1], true, PG_STAT_GET_WAL_SENDERS_COLS - 1);
}