From 07882b5460121c4ed100f9655935501f7cf23856 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Fri, 23 Apr 2004 13:05:27 +0000
Subject: r343: added automatic reindexing of the database when the index list
 changes (This used to be commit a811640ce408373a5c2c0ee2c125bd735d96d5e1)

---
 source4/lib/ldb/ldb_tdb/ldb_index.c | 66 +++++++++++++++++++++++++++++++++++++
 source4/lib/ldb/ldb_tdb/ldb_tdb.c   | 12 +++++++
 2 files changed, 78 insertions(+)

(limited to 'source4/lib/ldb')

diff --git a/source4/lib/ldb/ldb_tdb/ldb_index.c b/source4/lib/ldb/ldb_tdb/ldb_index.c
index 8cda8abff8..95162ae575 100644
--- a/source4/lib/ldb/ldb_tdb/ldb_index.c
+++ b/source4/lib/ldb/ldb_tdb/ldb_index.c
@@ -33,6 +33,7 @@
  */
 
 #include "includes.h"
+#include "ldb/ldb_tdb/ldb_tdb.h"
 
 struct dn_list {
 	unsigned int count;
@@ -723,3 +724,68 @@ int ltdb_index_del(struct ldb_context *ldb, const struct ldb_message *msg)
 
 	return 0;
 }
+
+
+/*
+  traversal function that deletes all @INDEX records
+*/
+static int delete_index(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *state)
+{
+	if (strncmp(key.dptr, "@INDEX:", 7) == 0) {
+		return tdb_delete(tdb, key);
+	}
+	return 0;
+}
+
+/*
+  traversal function that adds @INDEX records during a re index
+*/
+static int re_index(struct tdb_context *tdb, TDB_DATA key, TDB_DATA data, void *state)
+{
+	struct ldb_context *ldb = state;
+	struct ldb_message msg;
+	int ret;
+
+	if (strncmp(key.dptr, "DN=@", 4) == 0 ||
+	    strncmp(key.dptr, "DN=", 3) != 0) {
+		return 0;
+	}
+
+	ret = ltdb_unpack_data(ldb, &data, &msg);
+	if (ret != 0) {
+		return -1;
+	}
+
+	msg.dn = key.dptr+3;
+
+	ret = ltdb_index_add(ldb, &msg);
+
+	ltdb_unpack_data_free(&msg);
+
+	return ret;
+}
+
+/*
+  force a complete reindex of the database
+*/
+int ltdb_reindex(struct ldb_context *ldb)
+{
+	struct ltdb_private *ltdb = ldb->private;
+	int ret;
+
+	/* first traverse the database deleting any @INDEX records */
+	ret = tdb_traverse(ltdb->tdb, delete_index, NULL);
+	if (ret == -1) {
+		errno = EIO;
+		return -1;
+	}
+
+	/* now traverse adding any indexes for normal LDB records */
+	ret = tdb_traverse(ltdb->tdb, re_index, ldb);
+	if (ret == -1) {
+		errno = EIO;
+		return -1;
+	}
+
+	return 0;
+}
diff --git a/source4/lib/ldb/ldb_tdb/ldb_tdb.c b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
index b28d73cbea..34cff41794 100644
--- a/source4/lib/ldb/ldb_tdb/ldb_tdb.c
+++ b/source4/lib/ldb/ldb_tdb/ldb_tdb.c
@@ -148,6 +148,10 @@ static int ltdb_add(struct ldb_context *ldb, const struct ldb_message *msg)
 	
 	ret = ltdb_store(ldb, msg, TDB_INSERT);
 
+	if (strcmp(msg->dn, "@INDEXLIST") == 0) {
+		ltdb_reindex(ldb);
+	}
+
 	ltdb_unlock(ldb);
 
 	return ret;
@@ -206,6 +210,10 @@ static int ltdb_delete(struct ldb_context *ldb, const char *dn)
 
 	ltdb_search_dn1_free(ldb, &msg);
 
+	if (strcmp(dn, "@INDEXLIST") == 0) {
+		ltdb_reindex(ldb);
+	}
+
 	ltdb_unlock(ldb);
 	return ret;
 
@@ -430,6 +438,10 @@ static int ltdb_modify(struct ldb_context *ldb, const struct ldb_message *msg)
 	/* we've made all the mods - save the modified record back into the database */
 	ret = ltdb_store(ldb, &msg2, TDB_MODIFY);
 
+	if (strcmp(msg2.dn, "@INDEXLIST") == 0) {
+		ltdb_reindex(ldb);
+	}
+
 	free(tdb_key.dptr);
 	free(tdb_data.dptr);
 	ltdb_unpack_data_free(&msg2);
-- 
cgit