From 468112e2ba1dc023521d52e13fd26998a302edc3 Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@openldap.org>
Date: Tue, 23 Aug 2005 03:25:21 +0000
Subject: [PATCH] ITS#3961 provide
 ldap_pvt_thread_pool_fake_context_init/destroy, don't use arbitrary context
 pointers.

---
 include/ldap_pvt_thread.h         |  6 ++++++
 libraries/libldap_r/tpool.c       | 17 +++++++++++++++++
 servers/slapd/bconfig.c           | 14 +++++++++-----
 servers/slapd/overlays/syncprov.c | 21 ++++++---------------
 4 files changed, 38 insertions(+), 20 deletions(-)

diff --git a/include/ldap_pvt_thread.h b/include/ldap_pvt_thread.h
index 1ca300bd98..75b9998e80 100644
--- a/include/ldap_pvt_thread.h
+++ b/include/ldap_pvt_thread.h
@@ -208,6 +208,12 @@ ldap_pvt_thread_pool_purgekey LDAP_P(( void *key ));
 LDAP_F( void *)
 ldap_pvt_thread_pool_context LDAP_P(( void ));
 
+LDAP_F( void *)
+ldap_pvt_thread_pool_fake_context_init LDAP_P(( void ));
+
+LDAP_F( void )
+ldap_pvt_thread_pool_fake_context_destroy LDAP_P(( void *key ));
+
 LDAP_END_DECL
 
 #endif /* _LDAP_THREAD_H */
diff --git a/libraries/libldap_r/tpool.c b/libraries/libldap_r/tpool.c
index 04a71b645c..675fa4d0b4 100644
--- a/libraries/libldap_r/tpool.c
+++ b/libraries/libldap_r/tpool.c
@@ -660,4 +660,21 @@ void *ldap_pvt_thread_pool_context( )
 	return thread_keys[i].ctx;
 }
 
+void *ldap_pvt_thread_pool_fake_context_init( )
+{
+	return LDAP_CALLOC( LDAP_MAXTHR, sizeof(ldap_int_thread_key_t) );
+}
+
+void ldap_pvt_thread_pool_fake_context_destroy( void *vctx )
+{
+	ldap_int_thread_key_t *ctx = vctx;
+	int i;
+
+	for ( i=0; ctx[i].ltk_key; i++) {
+		if ( ctx[i].ltk_free )
+			ctx[i].ltk_free( ctx[i].ltk_key, ctx[i].ltk_data );
+		ctx[i].ltk_key = NULL;
+	}
+	LDAP_FREE( vctx );
+}
 #endif /* LDAP_THREAD_HAVE_TPOOL */
diff --git a/servers/slapd/bconfig.c b/servers/slapd/bconfig.c
index d050122be2..eb0f575ae0 100644
--- a/servers/slapd/bconfig.c
+++ b/servers/slapd/bconfig.c
@@ -2600,8 +2600,10 @@ config_setup_ldif( BackendDB *be, const char *dir, int readit ) {
 		return 1;
 
 	if ( readit ) {
+		void *thrctx = ldap_pvt_thread_pool_fake_context_init();
+
 		op = (Operation *)opbuf;
-		connection_fake_init( &conn, op, cfb );
+		connection_fake_init( &conn, op, thrctx );
 
 		filter.f_desc = slap_schema.si_ad_objectClass;
 
@@ -2631,7 +2633,7 @@ config_setup_ldif( BackendDB *be, const char *dir, int readit ) {
 		op->o_bd = &cfb->cb_db;
 		rc = op->o_bd->be_search( op, &rs );
 
-		slap_sl_mem_destroy( NULL, op->o_tmpmemctx );
+		ldap_pvt_thread_pool_fake_context_destroy( thrctx );
 	}
 
 	cfb->cb_use_ldif = 1;
@@ -3980,14 +3982,16 @@ config_back_db_open( BackendDB *be )
 	Operation *op;
 	slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
 	SlapReply rs = {REP_RESULT};
+	void *thrctx = NULL;
 
 	/* If we read the config from back-ldif, nothing to do here */
 	if ( cfb->cb_got_ldif )
 		return 0;
 
 	if ( cfb->cb_use_ldif ) {
+		thrctx = ldap_pvt_thread_pool_fake_context_init();
 		op = (Operation *)opbuf;
-		connection_fake_init( &conn, op, cfb );
+		connection_fake_init( &conn, op, thrctx );
 
 		op->o_dn = be->be_rootdn;
 		op->o_ndn = be->be_rootndn;
@@ -4098,8 +4102,8 @@ config_back_db_open( BackendDB *be )
 			}
 		}
 	}
-	if ( op )
-		slap_sl_mem_destroy( NULL, op->o_tmpmemctx );
+	if ( thrctx )
+		ldap_pvt_thread_pool_fake_context_destroy( thrctx );
 
 	return 0;
 }
diff --git a/servers/slapd/overlays/syncprov.c b/servers/slapd/overlays/syncprov.c
index 4e6ebec2a7..978e7c7fd8 100644
--- a/servers/slapd/overlays/syncprov.c
+++ b/servers/slapd/overlays/syncprov.c
@@ -2114,15 +2114,8 @@ sp_cf_gen(ConfigArgs *c)
 /* Cheating - we have no thread pool context for these functions,
  * so make one.
  */
-typedef struct thread_keys {
-	void *key;
-	void *data;
-	ldap_pvt_thread_pool_keyfree_t *xfree;
-} thread_keys;
 
-#define MAXKEYS	32
-/* A fake thread context */
-static thread_keys thrctx[MAXKEYS];
+static void *syncprov_thrctx;
 
 /* ITS#3456 we cannot run this search on the main thread, must use a
  * child thread in order to insure we have a big enough stack.
@@ -2165,7 +2158,8 @@ syncprov_db_open(
 		return rc;
 	}
 
-	connection_fake_init( &conn, op, thrctx );
+	syncprov_thrctx = ldap_pvt_thread_pool_fake_context_init();
+	connection_fake_init( &conn, op, syncprov_thrctx );
 	op->o_bd = be;
 	op->o_dn = be->be_rootdn;
 	op->o_ndn = be->be_rootndn;
@@ -2241,17 +2235,14 @@ syncprov_db_close(
 		Operation *op = (Operation *)opbuf;
 		SlapReply rs = {REP_RESULT};
 
-		connection_fake_init( &conn, op, thrctx );
+		connection_fake_init( &conn, op, syncprov_thrctx );
 		op->o_bd = be;
 		op->o_dn = be->be_rootdn;
 		op->o_ndn = be->be_rootndn;
 		syncprov_checkpoint( op, &rs, on );
 	}
-	for ( i=0; thrctx[i].key; i++) {
-		if ( thrctx[i].xfree )
-			thrctx[i].xfree( thrctx[i].key, thrctx[i].data );
-		thrctx[i].key = NULL;
-	}
+	ldap_pvt_thread_pool_fake_context_destroy( syncprov_thrctx );
+	syncprov_thrctx = NULL;
 
     return 0;
 }
-- 
2.39.5