add initial gid when it not defined in cfg

Signed-off-by: Nstesen <stesen.ma@huawei.com>
Change-Id: If93092121a4744aedcf2977df1d06787b121526b

services/init/init_common_service.c

@@ -65,6 +65,12 @@ static int SetAllAmbientCapability(void)
 static int SetPerms(const Service *service)
 {
     INIT_CHECK_RETURN_VALUE(KeepCapability() == 0, SERVICE_FAILURE);
+
+    if (service->servPerm.gIDCnt == 0) {
+        // use uid as gid
+        INIT_ERROR_CHECK(setgid(service->servPerm.uID) == 0, return SERVICE_FAILURE,
+            "SetPerms, setgid for %s failed. %d", service->name, errno);
+    }
     if (service->servPerm.gIDCnt > 0) {
         INIT_ERROR_CHECK(setgid(service->servPerm.gIDArray[0]) == 0, return SERVICE_FAILURE,
             "SetPerms, setgid for %s failed. %d", service->name, errno);

services/init/init_service_manager.c

@@ -275,7 +275,10 @@ static int GetServiceGids(const cJSON *curArrItem, Service *curServ)
 {
     int gidCount;
     cJSON *arrItem = cJSON_GetObjectItemCaseSensitive(curArrItem, GID_STR_IN_CFG);
-    if (!cJSON_IsArray(arrItem)) {
+    if (!arrItem) {
+        curServ->servPerm.gIDCnt = 0;
+        return SERVICE_SUCCESS;
+    } else if (!cJSON_IsArray(arrItem)) {
         gidCount = 1;
     } else {
         gidCount = cJSON_GetArraySize(arrItem);