/* nextid.c - keep track of the next id to be given out */
/* $OpenLDAP$ */
/*
- * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
+ * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
*/
#include <ac/string.h>
#include <ac/socket.h>
-
-#ifdef HAVE_SYS_PARAM_H
-#include <sys/param.h>
-#endif
+#include <ac/param.h>
#include "slap.h"
#include "back-ldbm.h"
-static ID
-next_id_read( Backend *be )
+static int
+next_id_read( Backend *be, ID *idp )
{
- ID id = NOID;
Datum key, data;
DBCache *db;
+ *idp = NOID;
+
if ( (db = ldbm_cache_open( be, "nextid", LDBM_SUFFIX, LDBM_WRCREAT ))
== NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
+ "next_id_read: could not open/create nextid%s\n", LDBM_SUFFIX ));
+#else
Debug( LDAP_DEBUG_ANY, "Could not open/create nextid" LDBM_SUFFIX "\n",
0, 0, 0 );
- return( NOID );
+#endif
+
+ return( -1 );
}
ldbm_datum_init( key );
- key.dptr = (char *) &id;
+ key.dptr = (char *) idp;
key.dsize = sizeof(ID);
data = ldbm_cache_fetch( db, key );
if( data.dptr != NULL ) {
- memcpy( &id, data.dptr, sizeof( ID ) );
+ AC_MEMCPY( idp, data.dptr, sizeof( ID ) );
ldbm_datum_free( db->dbc_db, data );
} else {
- id = 1;
+ *idp = 1;
}
ldbm_cache_close( be, db );
- return id;
+ return( 0 );
}
-ID
+int
next_id_write( Backend *be, ID id )
{
- struct ldbminfo *li = (struct ldbminfo *) be->be_private;
Datum key, data;
DBCache *db;
ID noid = NOID;
- int flags;
+ int flags, rc = 0;
if ( (db = ldbm_cache_open( be, "nextid", LDBM_SUFFIX, LDBM_WRCREAT ))
== NULL ) {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
+ "next_id_write: Could not open/create nextid%s\n", LDBM_SUFFIX ));
+#else
Debug( LDAP_DEBUG_ANY, "Could not open/create nextid" LDBM_SUFFIX "\n",
0, 0, 0 );
- return( NOID );
+#endif
+
+ return( -1 );
}
ldbm_datum_init( key );
data.dsize = sizeof(ID);
flags = LDBM_REPLACE;
- if( li->li_dbcachewsync ) flags |= LDBM_SYNC;
-
if ( ldbm_cache_store( db, key, data, flags ) != 0 ) {
- id = NOID;
+ rc = -1;
}
ldbm_cache_close( be, db );
- return id;
+ return( rc );
}
-ID
-next_id_get( Backend *be )
+int
+next_id_get( Backend *be, ID *idp )
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
- ID id = NOID;
+ int rc = 0;
+
+ *idp = NOID;
ldap_pvt_thread_mutex_lock( &li->li_nextid_mutex );
if ( li->li_nextid == NOID ) {
- li->li_nextid = next_id_read( be );
+ if ( ( rc = next_id_read( be, idp ) ) ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_nextid_mutex );
+ return( rc );
+ }
+ li->li_nextid = *idp;
}
- id = li->li_nextid;
+ *idp = li->li_nextid;
ldap_pvt_thread_mutex_unlock( &li->li_nextid_mutex );
- return id;
+ return( rc );
}
-ID
-next_id( Backend *be )
+int
+next_id( Backend *be, ID *idp )
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
- ID id = NOID;
+ int rc = 0;
ldap_pvt_thread_mutex_lock( &li->li_nextid_mutex );
if ( li->li_nextid == NOID ) {
- li->li_nextid = next_id_read( be );
+ if ( ( rc = next_id_read( be, idp ) ) ) {
+ ldap_pvt_thread_mutex_unlock( &li->li_nextid_mutex );
+ return( rc );
+ }
+ li->li_nextid = *idp;
}
- if ( li->li_nextid != NOID ) {
- id = li->li_nextid++;
-
- (void) next_id_write( be, li->li_nextid );
+ *idp = li->li_nextid++;
+ if ( next_id_write( be, li->li_nextid ) ) {
+ rc = -1;
}
ldap_pvt_thread_mutex_unlock( &li->li_nextid_mutex );
- return id;
-
+ return( rc );
}