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-rw-r--r--source3/sam/idmap.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/source3/sam/idmap.c b/source3/sam/idmap.c
index 29fcb89067..a8c47ab9ae 100644
--- a/source3/sam/idmap.c
+++ b/source3/sam/idmap.c
@@ -151,6 +151,21 @@ BOOL idmap_init(const char *remote_backend)
NTSTATUS idmap_set_mapping(const DOM_SID *sid, unid_t id, int id_type)
{
struct idmap_methods *map = remote_map;
+ DOM_SID tmp_sid;
+
+ DEBUG(10, ("idmap_set_mapping: Set %s to %s %d\n",
+ sid_string_static(sid),
+ ((id_type & ID_TYPEMASK) == ID_USERID) ? "UID" : "GID",
+ ((id_type & ID_TYPEMASK) == ID_USERID) ? id.uid : id.gid));
+
+ if ( (NT_STATUS_IS_OK(cache_map->
+ get_sid_from_id(&tmp_sid, id,
+ id_type | ID_QUERY_ONLY))) &&
+ sid_equal(sid, &tmp_sid) ) {
+ /* Nothing to do, we already have that mapping */
+ DEBUG(10, ("idmap_set_mapping: Mapping already there\n"));
+ return NT_STATUS_OK;
+ }
if (map == NULL) {
/* Ok, we don't have a authoritative remote