Bit-mask of mount flags. The following flags are defined: ST_RDONLY, ST_NOSUID, ST_NODEV, ST_NOEXEC, ST_SYNCHRONOUS, ST_MANDLOCK, ST_WRITE, ST_APPEND, ST_IMMUTABLE, ST_NOATIME, ST_NODIRATIME, and ST_RELATIME.
os/statvfs_result.f_flag
statvfs_result.f_flag