STATMOUNT_BY_FD
if (flags & STATMOUNT_BY_FD) {
if (flags & ~STATMOUNT_BY_FD)
if (flags & STATMOUNT_BY_FD) {
ret = statmount(0, 0, fd, mask, buf, bufsize, STATMOUNT_BY_FD);
if (flags & STATMOUNT_BY_FD) {
ret = statmount(0, 0, fd, STATMOUNT_MNT_NS_ID, &sm, sizeof(sm), STATMOUNT_BY_FD);
ret = statmount(0, 0, fd, STATMOUNT_MNT_NS_ID, &sm, sizeof(sm), STATMOUNT_BY_FD);