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Add a hook in ExecCheckRTPerms().

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This hook allows a loadable module to gain control when table permissions
are checked.  It is expected to be used by an eventual SE-PostgreSQL
implementation, but there are other possible applications as well.  A
sample contrib module can be found in the archives at:

http://archives.postgresql.org/pgsql-hackers/2010-05/msg01095.php

Robert Haas and Stephen Frost
This commit is contained in:
Robert Haas
2010-07-09 14:06:01 +00:00
parent b40466c337
commit f4122a8d50
2 changed files with 12 additions and 2 deletions
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8
src/backend/executor/execMain.c
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@ -26,7 +26,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.349 2010/04/28 16:10:42 heikki Exp $
* $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.350 2010/07/09 14:06:01 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@ -63,6 +63,9 @@ ExecutorStart_hook_type ExecutorStart_hook = NULL;
ExecutorRun_hook_type ExecutorRun_hook = NULL;
ExecutorEnd_hook_type ExecutorEnd_hook = NULL;
/* Hook for plugin to get control in ExecCheckRTPerms() */
ExecutorCheckPerms_hook_type ExecutorCheckPerms_hook = NULL;
/* decls for local routines only used within this module */
static void InitPlan(QueryDesc *queryDesc, int eflags);
static void ExecEndPlan(PlanState *planstate, EState *estate);
@ -416,6 +419,9 @@ ExecCheckRTPerms(List *rangeTable)
{
ExecCheckRTEPerms((RangeTblEntry *) lfirst(l));
}
if (ExecutorCheckPerms_hook)
(*ExecutorCheckPerms_hook)(rangeTable);
}
/*