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Minimize calls of pg_class_aclcheck to minimum necessary

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In a couple of code paths, pg_class_aclcheck is called in succession
with multiple different modes set.  This patch combines those modes to
have a single call of this function and reduce a bit process overhead
for permission checking.

Author: Michael Paquier <michael@otacoo.com>
Reviewed-by: Fabrízio de Royes Mello <fabriziomello@gmail.com>
This commit is contained in:
Peter Eisentraut
2014-10-22 21:41:43 -04:00
parent a5f7d58194
commit e64d3c5635
1 changed files with 6 additions and 6 deletions
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12
src/backend/commands/sequence.c
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@ -546,8 +546,8 @@ nextval_internal(Oid relid)
/* open and AccessShareLock sequence */
init_sequence(relid, &elm, &seqrel);
if (pg_class_aclcheck(elm->relid, GetUserId(), ACL_USAGE) != ACLCHECK_OK &&
pg_class_aclcheck(elm->relid, GetUserId(), ACL_UPDATE) != ACLCHECK_OK)
if (pg_class_aclcheck(elm->relid, GetUserId(),
ACL_USAGE | ACL_UPDATE) != ACLCHECK_OK)
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied for sequence %s",
@ -759,8 +759,8 @@ currval_oid(PG_FUNCTION_ARGS)
/* open and AccessShareLock sequence */
init_sequence(relid, &elm, &seqrel);
if (pg_class_aclcheck(elm->relid, GetUserId(), ACL_SELECT) != ACLCHECK_OK &&
pg_class_aclcheck(elm->relid, GetUserId(), ACL_USAGE) != ACLCHECK_OK)
if (pg_class_aclcheck(elm->relid, GetUserId(),
ACL_SELECT | ACL_USAGE) != ACLCHECK_OK)
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied for sequence %s",
@ -801,8 +801,8 @@ lastval(PG_FUNCTION_ARGS)
/* nextval() must have already been called for this sequence */
Assert(last_used_seq->last_valid);
if (pg_class_aclcheck(last_used_seq->relid, GetUserId(), ACL_SELECT) != ACLCHECK_OK &&
pg_class_aclcheck(last_used_seq->relid, GetUserId(), ACL_USAGE) != ACLCHECK_OK)
if (pg_class_aclcheck(last_used_seq->relid, GetUserId(),
ACL_SELECT | ACL_USAGE) != ACLCHECK_OK)
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("permission denied for sequence %s",