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Reintroduce MAINTAIN privilege and pg_maintain predefined role.

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Roles with MAINTAIN on a relation may run VACUUM, ANALYZE, REINDEX,
REFRESH MATERIALIZE VIEW, CLUSTER, and LOCK TABLE on the relation.
Roles with privileges of pg_maintain may run those same commands on
all relations.

This was previously committed for v16, but it was reverted in
commit 151c22deee due to concerns about search_path tricks that
could be used to escalate privileges to the table owner.  Commits
2af07e2f74, 59825d1639, and c7ea3f4229 resolved these concerns by
restricting search_path when running maintenance commands.

Bumps catversion.

Reviewed-by: Jeff Davis
Discussion: https://postgr.es/m/20240305161235.GA3478007%40nathanxps13
This commit is contained in:
Nathan Bossart
2024-03-13 14:49:26 -05:00
parent 2041bc4276
commit ecb0fd3372
42 changed files with 457 additions and 180 deletions
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11
src/test/perl/PostgreSQL/Test/AdjustUpgrade.pm
View File

@@ -300,6 +300,17 @@ sub adjust_old_dumpfile
$dump = _mash_view_qualifiers($dump);
}
if ($old_version >= 14 && $old_version < 17)
{
# Fix up some privilege-set discrepancies.
$dump =~
s {^REVOKE SELECT,INSERT,REFERENCES,DELETE,TRIGGER,TRUNCATE,UPDATE ON TABLE}
{REVOKE ALL ON TABLE}mg;
$dump =~
s {^(GRANT SELECT,INSERT,REFERENCES,TRIGGER,TRUNCATE),UPDATE ON TABLE}
{$1,MAINTAIN,UPDATE ON TABLE}mg;
}
if ($old_version < 14)
{
# Remove mentions of extended hash functions.