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-rw-r--r--source4/dsdb/samdb/ldb_modules/rootdse.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/rootdse.c b/source4/dsdb/samdb/ldb_modules/rootdse.c
index 4f0b11b0ab..6c2a1e630d 100644
--- a/source4/dsdb/samdb/ldb_modules/rootdse.c
+++ b/source4/dsdb/samdb/ldb_modules/rootdse.c
@@ -1059,7 +1059,19 @@ static int rootdse_become_master(struct ldb_module *module,
struct loadparm_context *lp_ctx = ldb_get_opaque(ldb, "loadparm");
NTSTATUS status_call;
WERROR status_fn;
+ bool am_rodc;
struct dcerpc_binding_handle *irpc_handle;
+ int ret;
+
+ ret = samdb_rodc(ldb, &am_rodc);
+ if (ret != LDB_SUCCESS) {
+ return ldb_error(ldb, ret, "Could not determine if server is RODC.");
+ }
+
+ if (am_rodc) {
+ return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM,
+ "RODC cannot become a role master.");
+ }
msg = messaging_client_init(tmp_ctx, lpcfg_messaging_path(tmp_ctx, lp_ctx),
ldb_get_event_context(ldb));