diff --git a/vendor/golang.org/x/sys/unix/ztypes_zos_s390x.go b/vendor/golang.org/x/sys/unix/ztypes_zos_s390x.go
new file mode 100644
index 0000000..4ab638c
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/ztypes_zos_s390x.go
@@ -0,0 +1,406 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build zos && s390x
+// +build zos,s390x
+
+// Hand edited based on ztypes_linux_s390x.go
+// TODO: auto-generate.
+
+package unix
+
+const (
+	SizeofPtr      = 0x8
+	SizeofShort    = 0x2
+	SizeofInt      = 0x4
+	SizeofLong     = 0x8
+	SizeofLongLong = 0x8
+	PathMax        = 0x1000
+)
+
+const (
+	SizeofSockaddrAny   = 128
+	SizeofCmsghdr       = 12
+	SizeofIPMreq        = 8
+	SizeofIPv6Mreq      = 20
+	SizeofICMPv6Filter  = 32
+	SizeofIPv6MTUInfo   = 32
+	SizeofLinger        = 8
+	SizeofSockaddrInet4 = 16
+	SizeofSockaddrInet6 = 28
+	SizeofTCPInfo       = 0x68
+)
+
+type (
+	_C_short     int16
+	_C_int       int32
+	_C_long      int64
+	_C_long_long int64
+)
+
+type Timespec struct {
+	Sec  int64
+	Nsec int64
+}
+
+type Timeval struct {
+	Sec  int64
+	Usec int64
+}
+
+type timeval_zos struct { //correct (with padding and all)
+	Sec  int64
+	_    [4]byte // pad
+	Usec int32
+}
+
+type Tms struct { //clock_t is 4-byte unsigned int in zos
+	Utime  uint32
+	Stime  uint32
+	Cutime uint32
+	Cstime uint32
+}
+
+type Time_t int64
+
+type Utimbuf struct {
+	Actime  int64
+	Modtime int64
+}
+
+type Utsname struct {
+	Sysname    [65]byte
+	Nodename   [65]byte
+	Release    [65]byte
+	Version    [65]byte
+	Machine    [65]byte
+	Domainname [65]byte
+}
+
+type RawSockaddrInet4 struct {
+	Len    uint8
+	Family uint8
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	Zero   [8]uint8
+}
+
+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   [108]int8
+}
+
+type RawSockaddr struct {
+	Len    uint8
+	Family uint8
+	Data   [14]uint8
+}
+
+type RawSockaddrAny struct {
+	Addr RawSockaddr
+	_    [112]uint8 // pad
+}
+
+type _Socklen uint32
+
+type Linger struct {
+	Onoff  int32
+	Linger int32
+}
+
+type Iovec struct {
+	Base *byte
+	Len  uint64
+}
+
+type IPMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type IPv6Mreq struct {
+	Multiaddr [16]byte /* in6_addr */
+	Interface uint32
+}
+
+type Msghdr struct {
+	Name       *byte
+	Iov        *Iovec
+	Control    *byte
+	Flags      int32
+	Namelen    int32
+	Iovlen     int32
+	Controllen int32
+}
+
+type Cmsghdr struct {
+	Len   int32
+	Level int32
+	Type  int32
+}
+
+type Inet4Pktinfo struct {
+	Addr    [4]byte /* in_addr */
+	Ifindex uint32
+}
+
+type Inet6Pktinfo struct {
+	Addr    [16]byte /* in6_addr */
+	Ifindex uint32
+}
+
+type IPv6MTUInfo struct {
+	Addr RawSockaddrInet6
+	Mtu  uint32
+}
+
+type ICMPv6Filter struct {
+	Data [8]uint32
+}
+
+type TCPInfo struct {
+	State          uint8
+	Ca_state       uint8
+	Retransmits    uint8
+	Probes         uint8
+	Backoff        uint8
+	Options        uint8
+	Rto            uint32
+	Ato            uint32
+	Snd_mss        uint32
+	Rcv_mss        uint32
+	Unacked        uint32
+	Sacked         uint32
+	Lost           uint32
+	Retrans        uint32
+	Fackets        uint32
+	Last_data_sent uint32
+	Last_ack_sent  uint32
+	Last_data_recv uint32
+	Last_ack_recv  uint32
+	Pmtu           uint32
+	Rcv_ssthresh   uint32
+	Rtt            uint32
+	Rttvar         uint32
+	Snd_ssthresh   uint32
+	Snd_cwnd       uint32
+	Advmss         uint32
+	Reordering     uint32
+	Rcv_rtt        uint32
+	Rcv_space      uint32
+	Total_retrans  uint32
+}
+
+type _Gid_t uint32
+
+type rusage_zos struct {
+	Utime timeval_zos
+	Stime timeval_zos
+}
+
+type Rusage struct {
+	Utime    Timeval
+	Stime    Timeval
+	Maxrss   int64
+	Ixrss    int64
+	Idrss    int64
+	Isrss    int64
+	Minflt   int64
+	Majflt   int64
+	Nswap    int64
+	Inblock  int64
+	Oublock  int64
+	Msgsnd   int64
+	Msgrcv   int64
+	Nsignals int64
+	Nvcsw    int64
+	Nivcsw   int64
+}
+
+type Rlimit struct {
+	Cur uint64
+	Max uint64
+}
+
+// { int, short, short } in poll.h
+type PollFd struct {
+	Fd      int32
+	Events  int16
+	Revents int16
+}
+
+type Stat_t struct { //Linux Definition
+	Dev     uint64
+	Ino     uint64
+	Nlink   uint64
+	Mode    uint32
+	Uid     uint32
+	Gid     uint32
+	_       int32
+	Rdev    uint64
+	Size    int64
+	Atim    Timespec
+	Mtim    Timespec
+	Ctim    Timespec
+	Blksize int64
+	Blocks  int64
+	_       [3]int64
+}
+
+type Stat_LE_t struct {
+	_            [4]byte // eye catcher
+	Length       uint16
+	Version      uint16
+	Mode         int32
+	Ino          uint32
+	Dev          uint32
+	Nlink        int32
+	Uid          int32
+	Gid          int32
+	Size         int64
+	Atim31       [4]byte
+	Mtim31       [4]byte
+	Ctim31       [4]byte
+	Rdev         uint32
+	Auditoraudit uint32
+	Useraudit    uint32
+	Blksize      int32
+	Creatim31    [4]byte
+	AuditID      [16]byte
+	_            [4]byte // rsrvd1
+	File_tag     struct {
+		Ccsid   uint16
+		Txtflag uint16 // aggregating Txflag:1 deferred:1 rsvflags:14
+	}
+	CharsetID [8]byte
+	Blocks    int64
+	Genvalue  uint32
+	Reftim31  [4]byte
+	Fid       [8]byte
+	Filefmt   byte
+	Fspflag2  byte
+	_         [2]byte // rsrvd2
+	Ctimemsec int32
+	Seclabel  [8]byte
+	_         [4]byte // rsrvd3
+	_         [4]byte // rsrvd4
+	Atim      Time_t
+	Mtim      Time_t
+	Ctim      Time_t
+	Creatim   Time_t
+	Reftim    Time_t
+	_         [24]byte // rsrvd5
+}
+
+type Statvfs_t struct {
+	ID          [4]byte
+	Len         int32
+	Bsize       uint64
+	Blocks      uint64
+	Usedspace   uint64
+	Bavail      uint64
+	Flag        uint64
+	Maxfilesize int64
+	_           [16]byte
+	Frsize      uint64
+	Bfree       uint64
+	Files       uint32
+	Ffree       uint32
+	Favail      uint32
+	Namemax31   uint32
+	Invarsec    uint32
+	_           [4]byte
+	Fsid        uint64
+	Namemax     uint64
+}
+
+type Statfs_t struct {
+	Type    uint32
+	Bsize   uint64
+	Blocks  uint64
+	Bfree   uint64
+	Bavail  uint64
+	Files   uint32
+	Ffree   uint32
+	Fsid    uint64
+	Namelen uint64
+	Frsize  uint64
+	Flags   uint64
+}
+
+type Dirent struct {
+	Reclen uint16
+	Namlen uint16
+	Ino    uint32
+	Extra  uintptr
+	Name   [256]byte
+}
+
+type FdSet struct {
+	Bits [64]int32
+}
+
+// This struct is packed on z/OS so it can't be used directly.
+type Flock_t struct {
+	Type   int16
+	Whence int16
+	Start  int64
+	Len    int64
+	Pid    int32
+}
+
+type Termios struct {
+	Cflag uint32
+	Iflag uint32
+	Lflag uint32
+	Oflag uint32
+	Cc    [11]uint8
+}
+
+type Winsize struct {
+	Row    uint16
+	Col    uint16
+	Xpixel uint16
+	Ypixel uint16
+}
+
+type W_Mnth struct {
+	Hid   [4]byte
+	Size  int32
+	Cur1  int32 //32bit pointer
+	Cur2  int32 //^
+	Devno uint32
+	_     [4]byte
+}
+
+type W_Mntent struct {
+	Fstype       uint32
+	Mode         uint32
+	Dev          uint32
+	Parentdev    uint32
+	Rootino      uint32
+	Status       byte
+	Ddname       [9]byte
+	Fstname      [9]byte
+	Fsname       [45]byte
+	Pathlen      uint32
+	Mountpoint   [1024]byte
+	Jobname      [8]byte
+	PID          int32
+	Parmoffset   int32
+	Parmlen      int16
+	Owner        [8]byte
+	Quiesceowner [8]byte
+	_            [38]byte
+}