X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=servers%2Fslapd%2Fbackover.c;h=8d3ed4022e355b6a8854095503518df6321c3808;hb=3bf9998d7885ef6bbc4690d4229e5cb5068a35de;hp=f14b327019ee72e5a25a283346ff22911a15a439;hpb=4ccf65d9bce7c1832a24fd5bacdc6972c18bafda;p=openldap
diff --git a/servers/slapd/backover.c b/servers/slapd/backover.c
index f14b327019..8d3ed4022e 100644
--- a/servers/slapd/backover.c
+++ b/servers/slapd/backover.c
@@ -2,7 +2,7 @@
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software .
*
- * Copyright 2003-2006 The OpenLDAP Foundation.
+ * Copyright 2003-2008 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -39,6 +39,7 @@ enum db_which {
static int
over_db_func(
BackendDB *be,
+ ConfigReply *cr,
enum db_which which
)
{
@@ -51,14 +52,14 @@ over_db_func(
func = &oi->oi_orig->bi_db_open;
if ( func[which] ) {
be->bd_info = oi->oi_orig;
- rc = func[which]( be );
+ rc = func[which]( be, cr );
}
for (; on && rc == 0; on=on->on_next) {
be->bd_info = &on->on_bi;
func = &on->on_bi.bi_db_open;
if (func[which]) {
- rc = func[which]( be );
+ rc = func[which]( be, cr );
}
}
be->bd_info = bi_orig;
@@ -147,6 +148,7 @@ over_db_config(
ca.bi = &on->on_bi;
ct = config_find_keyword( on->on_bi.bi_cf_ocs->co_table, &ca );
if ( ct ) {
+ ca.table = on->on_bi.bi_cf_ocs->co_type;
rc = config_add_vals( ct, &ca );
if ( rc != SLAP_CONF_UNKNOWN )
break;
@@ -167,15 +169,17 @@ over_db_config(
static int
over_db_open(
- BackendDB *be
+ BackendDB *be,
+ ConfigReply *cr
)
{
- return over_db_func( be, db_open );
+ return over_db_func( be, cr, db_open );
}
static int
over_db_close(
- BackendDB *be
+ BackendDB *be,
+ ConfigReply *cr
)
{
slap_overinfo *oi = be->bd_info->bi_private;
@@ -186,13 +190,13 @@ over_db_close(
for (; on && rc == 0; on=on->on_next) {
be->bd_info = &on->on_bi;
if ( be->bd_info->bi_db_close ) {
- rc = be->bd_info->bi_db_close( be );
+ rc = be->bd_info->bi_db_close( be, cr );
}
}
if ( oi->oi_orig->bi_db_close ) {
be->bd_info = oi->oi_orig;
- rc = be->bd_info->bi_db_close( be );
+ rc = be->bd_info->bi_db_close( be, cr );
}
be->bd_info = bi_orig;
@@ -201,19 +205,23 @@ over_db_close(
static int
over_db_destroy(
- BackendDB *be
+ BackendDB *be,
+ ConfigReply *cr
)
{
slap_overinfo *oi = be->bd_info->bi_private;
slap_overinst *on = oi->oi_list, *next;
int rc;
- rc = over_db_func( be, db_destroy );
+ rc = over_db_func( be, cr, db_destroy );
- for (next = on->on_next; on; on=next) {
- next = on->on_next;
- free( on );
+ if ( on ) {
+ for (next = on->on_next; on; on=next) {
+ next = on->on_next;
+ free( on );
+ }
}
+
free( oi );
return rc;
}
@@ -235,6 +243,11 @@ over_back_response ( Operation *op, SlapReply *rs )
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
+ /* Bypass the remaining on_response layers, but allow
+ * normal execution to continue.
+ */
+ if ( rc == SLAP_CB_BYPASS )
+ rc = SLAP_CB_CONTINUE;
op->o_bd = be;
return rc;
}
@@ -314,6 +327,147 @@ over_access_allowed(
return rc;
}
+int
+overlay_entry_get_ov(
+ Operation *op,
+ struct berval *dn,
+ ObjectClass *oc,
+ AttributeDescription *ad,
+ int rw,
+ Entry **e,
+ slap_overinst *on )
+{
+ slap_overinfo *oi = on->on_info;
+ BackendDB *be = op->o_bd, db;
+ BackendInfo *bi = op->o_bd->bd_info;
+ int rc = SLAP_CB_CONTINUE;
+
+ for ( ; on; on = on->on_next ) {
+ if ( on->on_bi.bi_entry_get_rw ) {
+ /* NOTE: do not copy the structure until required */
+ if ( !SLAP_ISOVERLAY( op->o_bd ) ) {
+ db = *op->o_bd;
+ db.be_flags |= SLAP_DBFLAG_OVERLAY;
+ op->o_bd = &db;
+ }
+
+ op->o_bd->bd_info = (BackendInfo *)on;
+ rc = on->on_bi.bi_entry_get_rw( op, dn,
+ oc, ad, rw, e );
+ if ( rc != SLAP_CB_CONTINUE ) break;
+ }
+ }
+
+ if ( rc == SLAP_CB_CONTINUE ) {
+ /* if the database structure was changed, o_bd points to a
+ * copy of the structure; put the original bd_info in place */
+ if ( SLAP_ISOVERLAY( op->o_bd ) ) {
+ op->o_bd->bd_info = oi->oi_orig;
+ }
+
+ if ( oi->oi_orig->bi_entry_get_rw ) {
+ rc = oi->oi_orig->bi_entry_get_rw( op, dn,
+ oc, ad, rw, e );
+ }
+ }
+ /* should not fall thru this far without anything happening... */
+ if ( rc == SLAP_CB_CONTINUE ) {
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ }
+
+ op->o_bd = be;
+ op->o_bd->bd_info = bi;
+
+ return rc;
+}
+
+static int
+over_entry_get_rw(
+ Operation *op,
+ struct berval *dn,
+ ObjectClass *oc,
+ AttributeDescription *ad,
+ int rw,
+ Entry **e )
+{
+ slap_overinfo *oi;
+ slap_overinst *on;
+
+ assert( op->o_bd != NULL );
+
+ oi = op->o_bd->bd_info->bi_private;
+ on = oi->oi_list;
+
+ return overlay_entry_get_ov( op, dn, oc, ad, rw, e, on );
+}
+
+int
+overlay_entry_release_ov(
+ Operation *op,
+ Entry *e,
+ int rw,
+ slap_overinst *on )
+{
+ slap_overinfo *oi = on->on_info;
+ BackendDB *be = op->o_bd, db;
+ BackendInfo *bi = op->o_bd->bd_info;
+ int rc = SLAP_CB_CONTINUE;
+
+ for ( ; on; on = on->on_next ) {
+ if ( on->on_bi.bi_entry_release_rw ) {
+ /* NOTE: do not copy the structure until required */
+ if ( !SLAP_ISOVERLAY( op->o_bd ) ) {
+ db = *op->o_bd;
+ db.be_flags |= SLAP_DBFLAG_OVERLAY;
+ op->o_bd = &db;
+ }
+
+ op->o_bd->bd_info = (BackendInfo *)on;
+ rc = on->on_bi.bi_entry_release_rw( op, e, rw );
+ if ( rc != SLAP_CB_CONTINUE ) break;
+ }
+ }
+
+ if ( rc == SLAP_CB_CONTINUE ) {
+ /* if the database structure was changed, o_bd points to a
+ * copy of the structure; put the original bd_info in place */
+ if ( SLAP_ISOVERLAY( op->o_bd ) ) {
+ op->o_bd->bd_info = oi->oi_orig;
+ }
+
+ if ( oi->oi_orig->bi_entry_release_rw ) {
+ rc = oi->oi_orig->bi_entry_release_rw( op, e, rw );
+ }
+ }
+ /* should not fall thru this far without anything happening... */
+ if ( rc == SLAP_CB_CONTINUE ) {
+ entry_free( e );
+ rc = 0;
+ }
+
+ op->o_bd = be;
+ op->o_bd->bd_info = bi;
+
+ return rc;
+}
+
+static int
+over_entry_release_rw(
+ Operation *op,
+ Entry *e,
+ int rw )
+{
+ slap_overinfo *oi;
+ slap_overinst *on;
+
+ assert( op->o_bd != NULL );
+
+ oi = op->o_bd->bd_info->bi_private;
+ on = oi->oi_list;
+
+ return overlay_entry_release_ov( op, e, rw, on );
+}
+
static int
over_acl_group(
Operation *op,
@@ -490,6 +644,8 @@ int overlay_op_walk(
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
+ if ( rc == SLAP_CB_BYPASS )
+ rc = SLAP_CB_CONTINUE;
func = &oi->oi_orig->bi_op_bind;
if ( func[which] && rc == SLAP_CB_CONTINUE ) {
@@ -923,7 +1079,7 @@ overlay_destroy_one( BackendDB *be, slap_overinst *on )
if ( on->on_bi.bi_db_destroy ) {
BackendInfo *bi_orig = be->bd_info;
be->bd_info = (BackendInfo *)on;
- on->on_bi.bi_db_destroy( be );
+ on->on_bi.bi_db_destroy( be, NULL );
be->bd_info = bi_orig;
}
free( on );
@@ -932,14 +1088,77 @@ overlay_destroy_one( BackendDB *be, slap_overinst *on )
}
}
+void
+overlay_insert( BackendDB *be, slap_overinst *on2, slap_overinst ***prev,
+ int idx )
+{
+ slap_overinfo *oi = (slap_overinfo *)be->bd_info;
+
+ if ( idx == -1 ) {
+ on2->on_next = oi->oi_list;
+ oi->oi_list = on2;
+ } else {
+ int i;
+ slap_overinst *on, *otmp1 = NULL, *otmp2;
+
+ /* Since the list is in reverse order and is singly linked,
+ * we reverse it to find the idx insertion point. Adding
+ * on overlay at a specific point should be a pretty
+ * infrequent occurrence.
+ */
+ for ( on = oi->oi_list; on; on=otmp2 ) {
+ otmp2 = on->on_next;
+ on->on_next = otmp1;
+ otmp1 = on;
+ }
+ oi->oi_list = NULL;
+ /* advance to insertion point */
+ for ( i=0, on = otmp1; ion_next;
+ on->on_next = oi->oi_list;
+ oi->oi_list = on;
+ }
+ /* insert */
+ on2->on_next = oi->oi_list;
+ oi->oi_list = on2;
+ if ( otmp1 ) {
+ *prev = &otmp1->on_next;
+ /* replace remainder of list */
+ for ( on=otmp1; on; on=otmp1 ) {
+ otmp1 = on->on_next;
+ on->on_next = oi->oi_list;
+ oi->oi_list = on;
+ }
+ }
+ }
+}
+
+void
+overlay_move( BackendDB *be, slap_overinst *on, int idx )
+{
+ slap_overinfo *oi = (slap_overinfo *)be->bd_info;
+ slap_overinst **onp;
+
+ for (onp = &oi->oi_list; *onp; onp= &(*onp)->on_next) {
+ if ( *onp == on ) {
+ *onp = on->on_next;
+ break;
+ }
+ }
+ overlay_insert( be, on, &onp, idx );
+}
+
/* add an overlay to a particular backend. */
int
-overlay_config( BackendDB *be, const char *ov )
+overlay_config( BackendDB *be, const char *ov, int idx, BackendInfo **res )
{
- slap_overinst *on = NULL, *on2 = NULL;
+ slap_overinst *on = NULL, *on2 = NULL, **prev;
slap_overinfo *oi = NULL;
BackendInfo *bi = NULL;
+ if ( res )
+ *res = NULL;
+
on = overlay_find( ov );
if ( !on ) {
Debug( LDAP_DEBUG_ANY, "overlay \"%s\" not found\n", ov, 0, 0 );
@@ -1017,6 +1236,8 @@ overlay_config( BackendDB *be, const char *ov )
bi->bi_chk_controls = over_aux_chk_controls;
/* these have specific arglists */
+ bi->bi_entry_get_rw = over_entry_get_rw;
+ bi->bi_entry_release_rw = over_entry_release_rw;
bi->bi_access_allowed = over_access_allowed;
bi->bi_acl_group = over_acl_group;
bi->bi_acl_attribute = over_acl_attribute;
@@ -1028,10 +1249,10 @@ overlay_config( BackendDB *be, const char *ov )
} else {
if ( overlay_is_inst( be, ov ) ) {
- Debug( LDAP_DEBUG_ANY, "overlay_config(): "
- "overlay \"%s\" already in list\n",
- ov, 0, 0 );
if ( SLAPO_SINGLE( be ) ) {
+ Debug( LDAP_DEBUG_ANY, "overlay_config(): "
+ "overlay \"%s\" already in list\n",
+ ov, 0, 0 );
return 1;
}
}
@@ -1039,28 +1260,44 @@ overlay_config( BackendDB *be, const char *ov )
oi = be->bd_info->bi_private;
}
- /* Insert new overlay on head of list. Overlays are executed
- * in reverse of config order...
+ /* Insert new overlay into list. By default overlays are
+ * added to head of list and executed in LIFO order.
*/
on2 = ch_calloc( 1, sizeof(slap_overinst) );
*on2 = *on;
on2->on_info = oi;
- on2->on_next = oi->oi_list;
- oi->oi_list = on2;
+
+ prev = &oi->oi_list;
+ /* Do we need to find the insertion point? */
+ if ( idx >= 0 ) {
+ int i;
+
+ /* count current overlays */
+ for ( i=0, on=oi->oi_list; on; on=on->on_next, i++ );
+
+ /* are we just appending a new one? */
+ if ( idx >= i )
+ idx = -1;
+ }
+ overlay_insert( be, on2, &prev, idx );
/* Any initialization needed? */
- if ( on->on_bi.bi_db_init ) {
+ if ( on2->on_bi.bi_db_init ) {
int rc;
be->bd_info = (BackendInfo *)on2;
- rc = on2->on_bi.bi_db_init( be );
+ rc = on2->on_bi.bi_db_init( be, NULL );
be->bd_info = (BackendInfo *)oi;
if ( rc ) {
- oi->oi_list = on2->on_next;
+ *prev = on2->on_next;
ch_free( on2 );
+ on2 = NULL;
return rc;
}
}
+ if ( res )
+ *res = &on2->on_bi;
+
return 0;
}