diff --git a/demo_test/vendor/golang.org/x/sys/unix/ztypes_freebsd_arm.go b/demo_test/vendor/golang.org/x/sys/unix/ztypes_freebsd_arm.go
new file mode 100644
index 0000000..6f79227
--- /dev/null
+++ b/demo_test/vendor/golang.org/x/sys/unix/ztypes_freebsd_arm.go
@@ -0,0 +1,693 @@
+// cgo -godefs -- -fsigned-char types_freebsd.go | go run mkpost.go
+// Code generated by the command above; see README.md. DO NOT EDIT.
+
+// +build arm,freebsd
+
+package unix
+
+const (
+	SizeofPtr      = 0x4
+	SizeofShort    = 0x2
+	SizeofInt      = 0x4
+	SizeofLong     = 0x4
+	SizeofLongLong = 0x8
+)
+
+type (
+	_C_short     int16
+	_C_int       int32
+	_C_long      int32
+	_C_long_long int64
+)
+
+type Timespec struct {
+	Sec  int64
+	Nsec int32
+	_    [4]byte
+}
+
+type Timeval struct {
+	Sec  int64
+	Usec int32
+	_    [4]byte
+}
+
+type Rusage struct {
+	Utime    Timeval
+	Stime    Timeval
+	Maxrss   int32
+	Ixrss    int32
+	Idrss    int32
+	Isrss    int32
+	Minflt   int32
+	Majflt   int32
+	Nswap    int32
+	Inblock  int32
+	Oublock  int32
+	Msgsnd   int32
+	Msgrcv   int32
+	Nsignals int32
+	Nvcsw    int32
+	Nivcsw   int32
+}
+
+type Rlimit struct {
+	Cur int64
+	Max int64
+}
+
+type _Gid_t uint32
+
+const (
+	_statfsVersion = 0x20140518
+	_dirblksiz     = 0x400
+)
+
+type Stat_t struct {
+	Dev     uint64
+	Ino     uint64
+	Nlink   uint64
+	Mode    uint16
+	_0      int16
+	Uid     uint32
+	Gid     uint32
+	_1      int32
+	Rdev    uint64
+	Atim    Timespec
+	Mtim    Timespec
+	Ctim    Timespec
+	Btim    Timespec
+	Size    int64
+	Blocks  int64
+	Blksize int32
+	Flags   uint32
+	Gen     uint64
+	Spare   [10]uint64
+}
+
+type stat_freebsd11_t struct {
+	Dev     uint32
+	Ino     uint32
+	Mode    uint16
+	Nlink   uint16
+	Uid     uint32
+	Gid     uint32
+	Rdev    uint32
+	Atim    Timespec
+	Mtim    Timespec
+	Ctim    Timespec
+	Size    int64
+	Blocks  int64
+	Blksize int32
+	Flags   uint32
+	Gen     uint32
+	Lspare  int32
+	Btim    Timespec
+}
+
+type Statfs_t struct {
+	Version     uint32
+	Type        uint32
+	Flags       uint64
+	Bsize       uint64
+	Iosize      uint64
+	Blocks      uint64
+	Bfree       uint64
+	Bavail      int64
+	Files       uint64
+	Ffree       int64
+	Syncwrites  uint64
+	Asyncwrites uint64
+	Syncreads   uint64
+	Asyncreads  uint64
+	Spare       [10]uint64
+	Namemax     uint32
+	Owner       uint32
+	Fsid        Fsid
+	Charspare   [80]int8
+	Fstypename  [16]int8
+	Mntfromname [1024]int8
+	Mntonname   [1024]int8
+}
+
+type statfs_freebsd11_t struct {
+	Version     uint32
+	Type        uint32
+	Flags       uint64
+	Bsize       uint64
+	Iosize      uint64
+	Blocks      uint64
+	Bfree       uint64
+	Bavail      int64
+	Files       uint64
+	Ffree       int64
+	Syncwrites  uint64
+	Asyncwrites uint64
+	Syncreads   uint64
+	Asyncreads  uint64
+	Spare       [10]uint64
+	Namemax     uint32
+	Owner       uint32
+	Fsid        Fsid
+	Charspare   [80]int8
+	Fstypename  [16]int8
+	Mntfromname [88]int8
+	Mntonname   [88]int8
+}
+
+type Flock_t struct {
+	Start  int64
+	Len    int64
+	Pid    int32
+	Type   int16
+	Whence int16
+	Sysid  int32
+	_      [4]byte
+}
+
+type Dirent struct {
+	Fileno uint64
+	Off    int64
+	Reclen uint16
+	Type   uint8
+	Pad0   uint8
+	Namlen uint16
+	Pad1   uint16
+	Name   [256]int8
+}
+
+type dirent_freebsd11 struct {
+	Fileno uint32
+	Reclen uint16
+	Type   uint8
+	Namlen uint8
+	Name   [256]int8
+}
+
+type Fsid struct {
+	Val [2]int32
+}
+
+const (
+	PathMax = 0x400
+)
+
+const (
+	FADV_NORMAL     = 0x0
+	FADV_RANDOM     = 0x1
+	FADV_SEQUENTIAL = 0x2
+	FADV_WILLNEED   = 0x3
+	FADV_DONTNEED   = 0x4
+	FADV_NOREUSE    = 0x5
+)
+
+type RawSockaddrInet4 struct {
+	Len    uint8
+	Family uint8
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]int8
+}
+
+type RawSockaddrInet6 struct {
+	Len      uint8
+	Family   uint8
+	Port     uint16
+	Flowinfo uint32
+	Addr     [16]byte /* in6_addr */
+	Scope_id uint32
+}
+
+type RawSockaddrUnix struct {
+	Len    uint8
+	Family uint8
+	Path   [104]int8
+}
+
+type RawSockaddrDatalink struct {
+	Len    uint8
+	Family uint8
+	Index  uint16
+	Type   uint8
+	Nlen   uint8
+	Alen   uint8
+	Slen   uint8
+	Data   [46]int8
+}
+
+type RawSockaddr struct {
+	Len    uint8
+	Family uint8
+	Data   [14]int8
+}
+
+type RawSockaddrAny struct {
+	Addr RawSockaddr
+	Pad  [92]int8
+}
+
+type _Socklen uint32
+
+type Linger struct {
+	Onoff  int32
+	Linger int32
+}
+
+type Iovec struct {
+	Base *byte
+	Len  uint32
+}
+
+type IPMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type IPMreqn struct {
+	Multiaddr [4]byte /* in_addr */
+	Address   [4]byte /* in_addr */
+	Ifindex   int32
+}
+
+type IPv6Mreq struct {
+	Multiaddr [16]byte /* in6_addr */
+	Interface uint32
+}
+
+type Msghdr struct {
+	Name       *byte
+	Namelen    uint32
+	Iov        *Iovec
+	Iovlen     int32
+	Control    *byte
+	Controllen uint32
+	Flags      int32
+}
+
+type Cmsghdr struct {
+	Len   uint32
+	Level int32
+	Type  int32
+}
+
+type Inet6Pktinfo struct {
+	Addr    [16]byte /* in6_addr */
+	Ifindex uint32
+}
+
+type IPv6MTUInfo struct {
+	Addr RawSockaddrInet6
+	Mtu  uint32
+}
+
+type ICMPv6Filter struct {
+	Filt [8]uint32
+}
+
+const (
+	SizeofSockaddrInet4    = 0x10
+	SizeofSockaddrInet6    = 0x1c
+	SizeofSockaddrAny      = 0x6c
+	SizeofSockaddrUnix     = 0x6a
+	SizeofSockaddrDatalink = 0x36
+	SizeofLinger           = 0x8
+	SizeofIPMreq           = 0x8
+	SizeofIPMreqn          = 0xc
+	SizeofIPv6Mreq         = 0x14
+	SizeofMsghdr           = 0x1c
+	SizeofCmsghdr          = 0xc
+	SizeofInet6Pktinfo     = 0x14
+	SizeofIPv6MTUInfo      = 0x20
+	SizeofICMPv6Filter     = 0x20
+)
+
+const (
+	PTRACE_ATTACH     = 0xa
+	PTRACE_CONT       = 0x7
+	PTRACE_DETACH     = 0xb
+	PTRACE_GETFPREGS  = 0x23
+	PTRACE_GETFSBASE  = 0x47
+	PTRACE_GETLWPLIST = 0xf
+	PTRACE_GETNUMLWPS = 0xe
+	PTRACE_GETREGS    = 0x21
+	PTRACE_GETXSTATE  = 0x45
+	PTRACE_IO         = 0xc
+	PTRACE_KILL       = 0x8
+	PTRACE_LWPEVENTS  = 0x18
+	PTRACE_LWPINFO    = 0xd
+	PTRACE_SETFPREGS  = 0x24
+	PTRACE_SETREGS    = 0x22
+	PTRACE_SINGLESTEP = 0x9
+	PTRACE_TRACEME    = 0x0
+)
+
+const (
+	PIOD_READ_D  = 0x1
+	PIOD_WRITE_D = 0x2
+	PIOD_READ_I  = 0x3
+	PIOD_WRITE_I = 0x4
+)
+
+const (
+	PL_FLAG_BORN   = 0x100
+	PL_FLAG_EXITED = 0x200
+	PL_FLAG_SI     = 0x20
+)
+
+const (
+	TRAP_BRKPT = 0x1
+	TRAP_TRACE = 0x2
+)
+
+type PtraceLwpInfoStruct struct {
+	Lwpid        int32
+	Event        int32
+	Flags        int32
+	Sigmask      Sigset_t
+	Siglist      Sigset_t
+	Siginfo      __Siginfo
+	Tdname       [20]int8
+	Child_pid    int32
+	Syscall_code uint32
+	Syscall_narg uint32
+}
+
+type __Siginfo struct {
+	Signo    int32
+	Errno    int32
+	Code     int32
+	Pid      int32
+	Uid      uint32
+	Status   int32
+	Addr     *byte
+	Value    [4]byte
+	X_reason [32]byte
+}
+
+type Sigset_t struct {
+	Val [4]uint32
+}
+
+type Reg struct {
+	R      [13]uint32
+	R_sp   uint32
+	R_lr   uint32
+	R_pc   uint32
+	R_cpsr uint32
+}
+
+type FpReg struct {
+	Fpr_fpsr uint32
+	Fpr      [8][3]uint32
+}
+
+type PtraceIoDesc struct {
+	Op   int32
+	Offs *byte
+	Addr *byte
+	Len  uint32
+}
+
+type Kevent_t struct {
+	Ident  uint32
+	Filter int16
+	Flags  uint16
+	Fflags uint32
+	Data   int32
+	Udata  *byte
+}
+
+type FdSet struct {
+	Bits [32]uint32
+}
+
+const (
+	sizeofIfMsghdr         = 0xa8
+	SizeofIfMsghdr         = 0x70
+	sizeofIfData           = 0x98
+	SizeofIfData           = 0x60
+	SizeofIfaMsghdr        = 0x14
+	SizeofIfmaMsghdr       = 0x10
+	SizeofIfAnnounceMsghdr = 0x18
+	SizeofRtMsghdr         = 0x5c
+	SizeofRtMetrics        = 0x38
+)
+
+type ifMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Addrs   int32
+	Flags   int32
+	Index   uint16
+	_       [2]byte
+	Data    ifData
+}
+
+type IfMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Addrs   int32
+	Flags   int32
+	Index   uint16
+	_       [2]byte
+	Data    IfData
+}
+
+type ifData struct {
+	Type       uint8
+	Physical   uint8
+	Addrlen    uint8
+	Hdrlen     uint8
+	Link_state uint8
+	Vhid       uint8
+	Datalen    uint16
+	Mtu        uint32
+	Metric     uint32
+	Baudrate   uint64
+	Ipackets   uint64
+	Ierrors    uint64
+	Opackets   uint64
+	Oerrors    uint64
+	Collisions uint64
+	Ibytes     uint64
+	Obytes     uint64
+	Imcasts    uint64
+	Omcasts    uint64
+	Iqdrops    uint64
+	Oqdrops    uint64
+	Noproto    uint64
+	Hwassist   uint64
+	_          [8]byte
+	_          [16]byte
+}
+
+type IfData struct {
+	Type        uint8
+	Physical    uint8
+	Addrlen     uint8
+	Hdrlen      uint8
+	Link_state  uint8
+	Spare_char1 uint8
+	Spare_char2 uint8
+	Datalen     uint8
+	Mtu         uint32
+	Metric      uint32
+	Baudrate    uint32
+	Ipackets    uint32
+	Ierrors     uint32
+	Opackets    uint32
+	Oerrors     uint32
+	Collisions  uint32
+	Ibytes      uint32
+	Obytes      uint32
+	Imcasts     uint32
+	Omcasts     uint32
+	Iqdrops     uint32
+	Noproto     uint32
+	Hwassist    uint32
+	_           [4]byte
+	Epoch       int64
+	Lastchange  Timeval
+}
+
+type IfaMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Addrs   int32
+	Flags   int32
+	Index   uint16
+	_       [2]byte
+	Metric  int32
+}
+
+type IfmaMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Addrs   int32
+	Flags   int32
+	Index   uint16
+	_       [2]byte
+}
+
+type IfAnnounceMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Index   uint16
+	Name    [16]int8
+	What    uint16
+}
+
+type RtMsghdr struct {
+	Msglen  uint16
+	Version uint8
+	Type    uint8
+	Index   uint16
+	_       [2]byte
+	Flags   int32
+	Addrs   int32
+	Pid     int32
+	Seq     int32
+	Errno   int32
+	Fmask   int32
+	Inits   uint32
+	Rmx     RtMetrics
+}
+
+type RtMetrics struct {
+	Locks    uint32
+	Mtu      uint32
+	Hopcount uint32
+	Expire   uint32
+	Recvpipe uint32
+	Sendpipe uint32
+	Ssthresh uint32
+	Rtt      uint32
+	Rttvar   uint32
+	Pksent   uint32
+	Weight   uint32
+	Filler   [3]uint32
+}
+
+const (
+	SizeofBpfVersion    = 0x4
+	SizeofBpfStat       = 0x8
+	SizeofBpfZbuf       = 0xc
+	SizeofBpfProgram    = 0x8
+	SizeofBpfInsn       = 0x8
+	SizeofBpfHdr        = 0x20
+	SizeofBpfZbufHeader = 0x20
+)
+
+type BpfVersion struct {
+	Major uint16
+	Minor uint16
+}
+
+type BpfStat struct {
+	Recv uint32
+	Drop uint32
+}
+
+type BpfZbuf struct {
+	Bufa   *byte
+	Bufb   *byte
+	Buflen uint32
+}
+
+type BpfProgram struct {
+	Len   uint32
+	Insns *BpfInsn
+}
+
+type BpfInsn struct {
+	Code uint16
+	Jt   uint8
+	Jf   uint8
+	K    uint32
+}
+
+type BpfHdr struct {
+	Tstamp  Timeval
+	Caplen  uint32
+	Datalen uint32
+	Hdrlen  uint16
+	_       [6]byte
+}
+
+type BpfZbufHeader struct {
+	Kernel_gen uint32
+	Kernel_len uint32
+	User_gen   uint32
+	_          [5]uint32
+}
+
+type Termios struct {
+	Iflag  uint32
+	Oflag  uint32
+	Cflag  uint32
+	Lflag  uint32
+	Cc     [20]uint8
+	Ispeed uint32
+	Ospeed uint32
+}
+
+type Winsize struct {
+	Row    uint16
+	Col    uint16
+	Xpixel uint16
+	Ypixel uint16
+}
+
+const (
+	AT_FDCWD            = -0x64
+	AT_REMOVEDIR        = 0x800
+	AT_SYMLINK_FOLLOW   = 0x400
+	AT_SYMLINK_NOFOLLOW = 0x200
+)
+
+type PollFd struct {
+	Fd      int32
+	Events  int16
+	Revents int16
+}
+
+const (
+	POLLERR      = 0x8
+	POLLHUP      = 0x10
+	POLLIN       = 0x1
+	POLLINIGNEOF = 0x2000
+	POLLNVAL     = 0x20
+	POLLOUT      = 0x4
+	POLLPRI      = 0x2
+	POLLRDBAND   = 0x80
+	POLLRDNORM   = 0x40
+	POLLWRBAND   = 0x100
+	POLLWRNORM   = 0x4
+)
+
+type CapRights struct {
+	Rights [2]uint64
+}
+
+type Utsname struct {
+	Sysname  [256]byte
+	Nodename [256]byte
+	Release  [256]byte
+	Version  [256]byte
+	Machine  [256]byte
+}
+
+const SizeofClockinfo = 0x14
+
+type Clockinfo struct {
+	Hz     int32
+	Tick   int32
+	Spare  int32
+	Stathz int32
+	Profhz int32
+}