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Add defense in assign_session_authorization() against trying to do

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catalog lookups when not in a transaction.  This prevents bizarre
failures if someone tries to set a value for session_authorization in
postgresql.conf.  Per report from Fernando Nasser.
This commit is contained in:
Tom Lane 2003-06-06 16:25:35 +00:00
parent dd484de0b0
commit 2bc84b6852
1 changed files with 11 additions and 1 deletions
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12
src/backend/commands/variable.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.77 2003/05/22 17:13:08 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/variable.c,v 1.78 2003/06/06 16:25:35 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -750,6 +750,16 @@ assign_session_authorization(const char *value, bool doit, bool interactive)
/* not a saved ID, so look it up */
HeapTuple userTup;
if (! IsTransactionState())
{
/*
* Can't do catalog lookups, so fail. The upshot of this is
* that session_authorization cannot be set in postgresql.conf,
* which seems like a good thing anyway.
*/
return NULL;
}
userTup = SearchSysCache(SHADOWNAME,
PointerGetDatum(value),
0, 0, 0);