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-rw-r--r--source3/lib/util_builtin.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/source3/lib/util_builtin.c b/source3/lib/util_builtin.c
index 3aae509f73..c87c84927f 100644
--- a/source3/lib/util_builtin.c
+++ b/source3/lib/util_builtin.c
@@ -129,3 +129,30 @@ bool sid_check_is_in_builtin(const struct dom_sid *sid)
return sid_check_is_builtin(&dom_sid);
}
+
+/********************************************************************
+ Check if the SID is one of the well-known builtin SIDs (S-1-5-32-x)
+*********************************************************************/
+
+bool sid_check_is_wellknown_builtin(const struct dom_sid *sid)
+{
+ struct dom_sid dom_sid;
+ const struct rid_name_map *aliases = builtin_aliases;
+ uint32_t rid;
+
+ sid_copy(&dom_sid, sid);
+ sid_split_rid(&dom_sid, &rid);
+
+ if (!sid_check_is_builtin(&dom_sid)) {
+ return false;
+ }
+
+ while (aliases->name != NULL) {
+ if (aliases->rid == rid) {
+ return True;
+ }
+ aliases++;
+ }
+
+ return False;
+}