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Nathan Bossart f146eb45cb Fix privilege checks for pg_prewarm() on indexes. ... pg_prewarm() currently checks for SELECT privileges on the target relation. However, indexes do not have access rights of their own, so a role may be denied permission to prewarm an index despite having the SELECT privilege on its parent table. This commit fixes this by locking the parent table before the index (to avoid deadlocks) and checking for SELECT on the parent table. Note that the code is largely borrowed from amcheck_lock_relation_and_check(). An obvious downside of this change is the extra AccessShareLock on the parent table during prewarming, but that isn't expected to cause too much trouble in practice. Author: Ayush Vatsa <ayushvatsa1810@gmail.com> Co-authored-by: Nathan Bossart <nathandbossart@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Jeff Davis <pgsql@j-davis.com> Discussion: https://postgr.es/m/CACX%2BKaMz2ZoOojh0nQ6QNBYx8Ak1Dkoko%3DD4FSb80BYW%2Bo8CHQ%40mail.gmail.com Backpatch-through: 13		2 months ago
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Makefile	Split all OBJS style lines in makefiles into one-line-per-entry style.	6 years ago
autoprewarm.c	pg_prewarm: Allow autoprewarm to use more than 1GB to dump blocks.	6 months ago
pg_prewarm--1.0--1.1.sql	…
pg_prewarm--1.1--1.2.sql	pg_prewarm: Add automatic prewarm feature.	8 years ago
pg_prewarm--1.1.sql	…
pg_prewarm.c	Fix privilege checks for pg_prewarm() on indexes.	2 months ago
pg_prewarm.control	pg_prewarm: Add automatic prewarm feature.	8 years ago