-/* id.c - keep track of the next id to be given out */
+/* nextid.c - keep track of the next id to be given out */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2006 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include "portable.h"
#include <stdio.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/param.h>
+
+#include <ac/string.h>
+#include <ac/socket.h>
+#include <ac/param.h>
+
#include "slap.h"
#include "back-ldbm.h"
-ID
-next_id( Backend *be )
+static int
+next_id_read( Backend *be, ID *idp )
{
- struct ldbminfo *li = (struct ldbminfo *) be->be_private;
- char buf[MAXPATHLEN];
- char buf2[20];
- FILE *fp;
- ID id;
-
- sprintf( buf, "%s/NEXTID", li->li_directory );
-
- pthread_mutex_lock( &li->li_nextid_mutex );
- /* first time in here since startup - try to read the nexid */
- if ( li->li_nextid == -1 ) {
- if ( (fp = fopen( buf, "r" )) == NULL ) {
- Debug( LDAP_DEBUG_ANY,
- "next_id %d: could not open \"%s\"\n",
- li->li_nextid, buf, 0 );
- li->li_nextid = 1;
- } else {
- if ( fgets( buf2, sizeof(buf2), fp ) != NULL ) {
- li->li_nextid = atol( buf2 );
- } else {
- Debug( LDAP_DEBUG_ANY,
- "next_id %d: could not fgets nextid from \"%s\"\n",
- li->li_nextid, buf2, 0 );
- li->li_nextid = 1;
- }
- fclose( fp );
- }
+ Datum key, data;
+ DBCache *db;
+
+ *idp = NOID;
+
+ if ( (db = ldbm_cache_open( be, "nextid", LDBM_SUFFIX, LDBM_WRCREAT ))
+ == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "Could not open/create nextid" LDBM_SUFFIX "\n",
+ 0, 0, 0 );
+
+ return( -1 );
}
- li->li_nextid++;
- if ( (fp = fopen( buf, "w" )) == NULL ) {
- Debug( LDAP_DEBUG_ANY, "next_id %d: could not open \"%s\"\n",
- li->li_nextid, buf, 0 );
+ ldbm_datum_init( key );
+ key.dptr = (char *) idp;
+ key.dsize = sizeof(ID);
+
+ data = ldbm_cache_fetch( db, key );
+
+ if( data.dptr != NULL ) {
+ AC_MEMCPY( idp, data.dptr, sizeof( ID ) );
+ ldbm_datum_free( db->dbc_db, data );
+
} else {
- if ( fprintf( fp, "%ld\n", li->li_nextid ) == EOF ) {
- Debug( LDAP_DEBUG_ANY, "next_id %d: cannot fprintf\n",
- li->li_nextid, 0, 0 );
- }
- if( fclose( fp ) != 0 ) {
- Debug( LDAP_DEBUG_ANY, "next_id %d: cannot fclose\n",
- li->li_nextid, 0, 0 );
- }
+ *idp = 1;
}
- id = li->li_nextid - 1;
- pthread_mutex_unlock( &li->li_nextid_mutex );
- return( id );
+ ldbm_cache_close( be, db );
+ return( 0 );
}
-void
-next_id_return( Backend *be, ID id )
+int
+next_id_write( Backend *be, ID id )
{
- struct ldbminfo *li = (struct ldbminfo *) be->be_private;
- char buf[MAXPATHLEN];
- FILE *fp;
+ Datum key, data;
+ DBCache *db;
+ ID noid = NOID;
+ int flags, rc = 0;
- pthread_mutex_lock( &li->li_nextid_mutex );
- if ( id != li->li_nextid - 1 ) {
- pthread_mutex_unlock( &li->li_nextid_mutex );
- return;
+ if ( (db = ldbm_cache_open( be, "nextid", LDBM_SUFFIX, LDBM_WRCREAT ))
+ == NULL ) {
+ Debug( LDAP_DEBUG_ANY, "Could not open/create nextid" LDBM_SUFFIX "\n",
+ 0, 0, 0 );
+
+ return( -1 );
}
- sprintf( buf, "%s/NEXTID", li->li_directory );
+ ldbm_datum_init( key );
+ ldbm_datum_init( data );
- li->li_nextid--;
- if ( (fp = fopen( buf, "w" )) == NULL ) {
- Debug( LDAP_DEBUG_ANY,
- "next_id_return of %d: could not open \"%s\" next id %d\n",
- id, buf, li->li_nextid );
- } else {
- if ( fprintf( fp, "%ld\n", li->li_nextid ) == EOF ) {
- Debug( LDAP_DEBUG_ANY,
- "next_id_return of %d: cannot fprintf \"%s\" next id %d\n",
- id, buf, li->li_nextid );
- }
- if( fclose( fp ) != 0 ) {
- Debug( LDAP_DEBUG_ANY,
- "next_id_return of %d: cannot fclose \"%s\" next id %d\n",
- id, buf, li->li_nextid );
+ key.dptr = (char *) &noid;
+ key.dsize = sizeof(ID);
+
+ data.dptr = (char *) &id;
+ data.dsize = sizeof(ID);
+
+ flags = LDBM_REPLACE;
+ if ( ldbm_cache_store( db, key, data, flags ) != 0 ) {
+ rc = -1;
+ }
+
+ ldbm_cache_close( be, db );
+ return( rc );
+}
+
+int
+next_id_get( Backend *be, ID *idp )
+{
+ struct ldbminfo *li = (struct ldbminfo *) be->be_private;
+ int rc = 0;
+
+ *idp = NOID;
+
+ if ( li->li_nextid == NOID ) {
+ if ( ( rc = next_id_read( be, idp ) ) ) {
+ return( rc );
}
+ li->li_nextid = *idp;
}
- pthread_mutex_unlock( &li->li_nextid_mutex );
+
+ *idp = li->li_nextid;
+
+ return( rc );
}
-ID
-next_id_get( Backend *be )
+int
+next_id( Backend *be, ID *idp )
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
- char buf[MAXPATHLEN];
- char buf2[20];
- FILE *fp;
- ID id;
-
- sprintf( buf, "%s/NEXTID", li->li_directory );
-
- pthread_mutex_lock( &li->li_nextid_mutex );
- /* first time in here since startup - try to read the nexid */
- if ( li->li_nextid == -1 ) {
- if ( (fp = fopen( buf, "r" )) == NULL ) {
- Debug( LDAP_DEBUG_ANY,
- "next_id %d: could not open \"%s\"\n",
- li->li_nextid, buf, 0 );
- li->li_nextid = 1;
- } else {
- if ( fgets( buf2, sizeof(buf2), fp ) != NULL ) {
- li->li_nextid = atol( buf2 );
- } else {
- Debug( LDAP_DEBUG_ANY,
- "next_id %d: cannot fgets nextid from \"%s\"\n",
- li->li_nextid, buf2, 0 );
- li->li_nextid = 1;
- }
- fclose( fp );
+ int rc = 0;
+
+ if ( li->li_nextid == NOID ) {
+ if ( ( rc = next_id_read( be, idp ) ) ) {
+ return( rc );
}
+ li->li_nextid = *idp;
+ }
+
+ *idp = li->li_nextid++;
+ if ( next_id_write( be, li->li_nextid ) ) {
+ rc = -1;
}
- id = li->li_nextid;
- pthread_mutex_unlock( &li->li_nextid_mutex );
- return( id );
+ return( rc );
}
projects / openldap / blobdiff