/* add.c - ldap ldbm back-end add routine */
+#include "portable.h"
+
#include <stdio.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/socket.h>
+
+#include <ac/socket.h>
+#include <ac/string.h>
+
#include "slap.h"
#include "back-ldbm.h"
#include "proto-back-ldbm.h"
-extern int global_schemacheck;
-extern char *dn_parent();
-extern char *dn_normalize();
-
int
ldbm_back_add(
Backend *be,
)
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
- char *dn = NULL, *pdn = NULL;
+ char *pdn;
Entry *p = NULL;
- int rc;
+ int rootlock = 0;
+ int rc;
- dn = dn_normalize( strdup( e->e_dn ) );
+ Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n", e->e_dn, 0, 0);
- Debug(LDAP_DEBUG_ARGS, "==> ldbm_back_add: %s\n", dn, 0, 0);
+ /* nobody else can add until we lock our parent */
+ ldap_pvt_thread_mutex_lock(&li->li_add_mutex);
- if ( ( dn2id( be, dn ) ) != NOID ) {
+ if ( ( dn2id( be, e->e_ndn ) ) != NOID ) {
+ ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
entry_free( e );
- free( dn );
- send_ldap_result( conn, op, LDAP_ALREADY_EXISTS, "", "" );
+ send_ldap_result( conn, op, LDAP_ALREADY_EXISTS,
+ NULL, NULL, NULL, NULL );
return( -1 );
}
- /* XXX race condition here til we cache_add_entry_lock below XXX */
-
if ( global_schemacheck && oc_schema_check( e ) != 0 ) {
+ ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
+
Debug( LDAP_DEBUG_TRACE, "entry failed schema check\n",
0, 0, 0 );
- /* XXX this should be ok, no other thread should have access
- * because e hasn't been added to the cache yet
- */
entry_free( e );
- free( dn );
- send_ldap_result( conn, op, LDAP_OBJECT_CLASS_VIOLATION, "",
- "" );
- return( -1 );
- }
-
- /*
- * Try to add the entry to the cache, assign it a new dnid
- * and mark it locked. This should only fail if the entry
- * already exists.
- */
-
- e->e_id = next_id( be );
- if ( cache_add_entry_lock( &li->li_cache, e, ENTRY_STATE_CREATING )
- != 0 ) {
- Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
- 0 );
- next_id_return( be, e->e_id );
-
- /* XXX this should be ok, no other thread should have access
- * because e hasn't been added to the cache yet
- */
- entry_free( e );
- free( dn );
- send_ldap_result( conn, op, LDAP_ALREADY_EXISTS, "", "" );
+ send_ldap_result( conn, op, LDAP_OBJECT_CLASS_VIOLATION,
+ NULL, NULL, NULL, NULL );
return( -1 );
}
* add the entry.
*/
- if ( (pdn = dn_parent( be, dn )) != NULL ) {
- char *matched;
- /* no parent */
- matched = NULL;
+ pdn = dn_parent( be, e->e_ndn );
+
+ if( pdn != NULL && *pdn != '\0' && !be_issuffix(be, "") ) {
+ Entry *matched = NULL;
+
+ assert( *pdn != '\0' );
+
+ /* get parent with writer lock */
+ if ( (p = dn2entry_w( be, pdn, &matched )) == NULL ) {
+ char *matched_dn;
+ struct berval **refs;
+
+ ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
- /* get entry with reader lock */
- if ( (p = dn2entry_r( be, pdn, &matched )) == NULL ) {
- Debug( LDAP_DEBUG_TRACE, "parent does not exist\n", 0,
- 0, 0 );
- send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT,
- matched, "" );
if ( matched != NULL ) {
- free( matched );
+ matched_dn = ch_strdup( matched->e_dn );
+ refs = is_entry_referral( matched )
+ ? get_entry_referrals( be, conn, op, matched )
+ : NULL;
+ cache_return_entry_r( &li->li_cache, matched );
+
+ } else {
+ matched_dn = NULL;
+ refs = default_referral;
}
- rc = -1;
- goto return_results;
- }
- if ( matched != NULL ) {
- free( matched );
+ Debug( LDAP_DEBUG_TRACE, "parent does not exist\n",
+ 0, 0, 0 );
+
+ send_ldap_result( conn, op, LDAP_REFERRAL,
+ matched_dn, NULL, refs, NULL );
+
+ if( matched != NULL ) {
+ ber_bvecfree( refs );
+ free( matched_dn );
+ }
+
+ entry_free( e );
+ free( pdn );
+ return -1;
}
- if ( ! access_allowed( be, conn, op, p, "children", NULL,
- op->o_dn, ACL_WRITE ) ) {
+ /* don't need the add lock anymore */
+ ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
+
+ free(pdn);
+
+ if ( ! access_allowed( be, conn, op, p,
+ "children", NULL, ACL_WRITE ) )
+ {
+ /* free parent and writer lock */
+ cache_return_entry_w( &li->li_cache, p );
+
Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
0, 0 );
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
- "", "" );
+ NULL, NULL, NULL, NULL );
+
- rc = -1;
- goto return_results;
+ entry_free( e );
+ return -1;
}
- } else {
- if ( ! be_isroot( be, op->o_dn ) ) {
- Debug( LDAP_DEBUG_TRACE, "no parent & not root\n", 0,
+
+ if ( is_entry_alias( p ) ) {
+ /* parent is an alias, don't allow add */
+
+ /* free parent and writer lock */
+ cache_return_entry_w( &li->li_cache, p );
+
+ Debug( LDAP_DEBUG_TRACE, "parent is alias\n", 0,
+ 0, 0 );
+
+ send_ldap_result( conn, op, LDAP_ALIAS_PROBLEM,
+ NULL, NULL, NULL, NULL );
+
+ entry_free( e );
+ return -1;
+ }
+
+ if ( is_entry_referral( p ) ) {
+ /* parent is a referral, don't allow add */
+ char *matched_dn = ch_strdup( p->e_dn );
+ struct berval **refs = is_entry_referral( p )
+ ? get_entry_referrals( be, conn, op, p )
+ : NULL;
+
+ /* free parent and writer lock */
+ cache_return_entry_w( &li->li_cache, p );
+
+ Debug( LDAP_DEBUG_TRACE, "parent is referral\n", 0,
0, 0 );
+ send_ldap_result( conn, op, LDAP_REFERRAL,
+ matched_dn, NULL, refs, NULL );
+
+ ber_bvecfree( refs );
+ free( matched_dn );
+ entry_free( e );
+ return -1;
+ }
+
+ } else {
+ if(pdn != NULL) {
+ assert( *pdn == '\0' );
+ free(pdn);
+ }
+
+ /* no parent, must be adding entry to root */
+ if ( ! be_isroot( be, op->o_ndn ) ) {
+ ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
+
+ Debug( LDAP_DEBUG_TRACE, "%s add denied\n",
+ pdn == NULL ? "suffix" : "entry at root",
+ 0, 0 );
+
send_ldap_result( conn, op, LDAP_INSUFFICIENT_ACCESS,
- "", "" );
+ NULL, NULL, NULL, NULL );
- rc = -1;
- goto return_results;
+ entry_free( e );
+ return -1;
}
+
+ /*
+ * no parent, acquire the root write lock
+ * and release the add lock.
+ */
+ ldap_pvt_thread_mutex_lock(&li->li_root_mutex);
+ rootlock = 1;
+ ldap_pvt_thread_mutex_unlock(&li->li_add_mutex);
}
+ e->e_id = next_id( be );
+
+ /*
+ * Try to add the entry to the cache, assign it a new dnid.
+ */
+ rc = cache_add_entry_rw(&li->li_cache, e, CACHE_WRITE_LOCK);
+
+ if ( rc != 0 ) {
+ if( p != NULL) {
+ /* free parent and writer lock */
+ cache_return_entry_w( &li->li_cache, p );
+ }
+
+ if ( rootlock ) {
+ /* release root lock */
+ ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
+ }
+
+ Debug( LDAP_DEBUG_ANY, "cache_add_entry_lock failed\n", 0, 0,
+ 0 );
+
+ /* return the id */
+ next_id_return( be, e->e_id );
+
+ /* free the entry */
+ entry_free( e );
+
+ send_ldap_result( conn, op,
+ rc > 0 ? LDAP_ALREADY_EXISTS : LDAP_OPERATIONS_ERROR,
+ NULL, NULL, NULL, NULL );
+
+ return( -1 );
+ }
+
+ rc = -1;
+
/*
* add it to the id2children index for the parent
*/
if ( id2children_add( be, p, e ) != 0 ) {
Debug( LDAP_DEBUG_TRACE, "id2children_add failed\n", 0,
0, 0 );
- send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
+ send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
+ NULL, NULL, NULL, NULL );
- rc = -1;
goto return_results;
}
if ( index_add_entry( be, e ) != 0 ) {
Debug( LDAP_DEBUG_TRACE, "index_add_entry failed\n", 0,
0, 0 );
- send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
+ send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
+ NULL, NULL, NULL, NULL );
- rc = -1;
goto return_results;
}
/* dn2id index */
- if ( dn2id_add( be, dn, e->e_id ) != 0 ) {
+ if ( dn2id_add( be, e->e_ndn, e->e_id ) != 0 ) {
Debug( LDAP_DEBUG_TRACE, "dn2id_add failed\n", 0,
0, 0 );
- send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
+ send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
+ NULL, NULL, NULL, NULL );
- rc = -1;
goto return_results;
}
- /* acquire writer lock */
- entry_rdwr_lock(e, 1);
-
/* id2entry index */
if ( id2entry_add( be, e ) != 0 ) {
Debug( LDAP_DEBUG_TRACE, "id2entry_add failed\n", 0,
0, 0 );
- (void) dn2id_delete( be, dn );
- send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR, "", "" );
+ (void) dn2id_delete( be, e->e_ndn );
+ send_ldap_result( conn, op, LDAP_OPERATIONS_ERROR,
+ NULL, NULL, NULL, NULL );
- rc = -1;
goto return_results;
}
- send_ldap_result( conn, op, LDAP_SUCCESS, "", "" );
+ send_ldap_result( conn, op, LDAP_SUCCESS,
+ NULL, NULL, NULL, NULL );
rc = 0;
return_results:;
+ if (p != NULL) {
+ /* free parent and writer lock */
+ cache_return_entry_w( &li->li_cache, p );
+ }
- if ( dn != NULL )
- free( dn );
- if ( pdn != NULL )
- free( pdn );
-
- cache_set_state( &li->li_cache, e, 0 );
-
- /* free entry and writer lock */
- cache_return_entry_w( &li->li_cache, e );
+ if ( rootlock ) {
+ /* release root lock */
+ ldap_pvt_thread_mutex_unlock(&li->li_root_mutex);
+ }
- /* free entry and reader lock */
- if (p != NULL) {
- cache_return_entry_r( &li->li_cache, p );
+ if ( rc ) {
+ /* free entry and writer lock */
+ cache_return_entry_w( &li->li_cache, e );
}
return( rc );