ST_VALID	0x0020
ST_RDONLY	0x0001
ST_NOSUID	0x0002
ST_NODEV	0x0004
ST_NOEXEC	0x0008
ST_SYNCHRONOUS	0x0010
ST_MANDLOCK	0x0040
ST_NOATIME	0x0400
ST_NODIRATIME	0x0800
ST_RELATIME	0x1000
ST_NOSYMFOLLOW	0x2000