O_DIRECTORY       392 opal/mca/hwloc/hwloc201/hwloc/hwloc/topology-linux.c   dir_fd = openat(fsroot_fd, relative_path, O_RDONLY | O_DIRECTORY);
O_DIRECTORY      2003 opal/mca/hwloc/hwloc201/hwloc/hwloc/topology-linux.c   root_fd = open(fsroot_path, O_RDONLY | O_DIRECTORY);
O_DIRECTORY      4706 opal/mca/hwloc/hwloc201/hwloc/hwloc/topology-linux.c   root = open(fsroot_path, O_RDONLY | O_DIRECTORY);