diff --git a/vendor/golang.org/x/sys/unix/syscall_illumos.go b/vendor/golang.org/x/sys/unix/syscall_illumos.go
new file mode 100644
index 0000000..8c53576
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/syscall_illumos.go
@@ -0,0 +1,178 @@
+// Copyright 2021 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.
+
+// illumos system calls not present on Solaris.
+
+//go:build amd64 && illumos
+// +build amd64,illumos
+
+package unix
+
+import (
+	"fmt"
+	"runtime"
+	"unsafe"
+)
+
+func bytes2iovec(bs [][]byte) []Iovec {
+	iovecs := make([]Iovec, len(bs))
+	for i, b := range bs {
+		iovecs[i].SetLen(len(b))
+		if len(b) > 0 {
+			// somehow Iovec.Base on illumos is (*int8), not (*byte)
+			iovecs[i].Base = (*int8)(unsafe.Pointer(&b[0]))
+		} else {
+			iovecs[i].Base = (*int8)(unsafe.Pointer(&_zero))
+		}
+	}
+	return iovecs
+}
+
+//sys	readv(fd int, iovs []Iovec) (n int, err error)
+
+func Readv(fd int, iovs [][]byte) (n int, err error) {
+	iovecs := bytes2iovec(iovs)
+	n, err = readv(fd, iovecs)
+	return n, err
+}
+
+//sys	preadv(fd int, iovs []Iovec, off int64) (n int, err error)
+
+func Preadv(fd int, iovs [][]byte, off int64) (n int, err error) {
+	iovecs := bytes2iovec(iovs)
+	n, err = preadv(fd, iovecs, off)
+	return n, err
+}
+
+//sys	writev(fd int, iovs []Iovec) (n int, err error)
+
+func Writev(fd int, iovs [][]byte) (n int, err error) {
+	iovecs := bytes2iovec(iovs)
+	n, err = writev(fd, iovecs)
+	return n, err
+}
+
+//sys	pwritev(fd int, iovs []Iovec, off int64) (n int, err error)
+
+func Pwritev(fd int, iovs [][]byte, off int64) (n int, err error) {
+	iovecs := bytes2iovec(iovs)
+	n, err = pwritev(fd, iovecs, off)
+	return n, err
+}
+
+//sys	accept4(s int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (fd int, err error) = libsocket.accept4
+
+func Accept4(fd int, flags int) (nfd int, sa Sockaddr, err error) {
+	var rsa RawSockaddrAny
+	var len _Socklen = SizeofSockaddrAny
+	nfd, err = accept4(fd, &rsa, &len, flags)
+	if err != nil {
+		return
+	}
+	if len > SizeofSockaddrAny {
+		panic("RawSockaddrAny too small")
+	}
+	sa, err = anyToSockaddr(fd, &rsa)
+	if err != nil {
+		Close(nfd)
+		nfd = 0
+	}
+	return
+}
+
+//sys	putmsg(fd int, clptr *strbuf, dataptr *strbuf, flags int) (err error)
+
+func Putmsg(fd int, cl []byte, data []byte, flags int) (err error) {
+	var clp, datap *strbuf
+	if len(cl) > 0 {
+		clp = &strbuf{
+			Len: int32(len(cl)),
+			Buf: (*int8)(unsafe.Pointer(&cl[0])),
+		}
+	}
+	if len(data) > 0 {
+		datap = &strbuf{
+			Len: int32(len(data)),
+			Buf: (*int8)(unsafe.Pointer(&data[0])),
+		}
+	}
+	return putmsg(fd, clp, datap, flags)
+}
+
+//sys	getmsg(fd int, clptr *strbuf, dataptr *strbuf, flags *int) (err error)
+
+func Getmsg(fd int, cl []byte, data []byte) (retCl []byte, retData []byte, flags int, err error) {
+	var clp, datap *strbuf
+	if len(cl) > 0 {
+		clp = &strbuf{
+			Maxlen: int32(len(cl)),
+			Buf:    (*int8)(unsafe.Pointer(&cl[0])),
+		}
+	}
+	if len(data) > 0 {
+		datap = &strbuf{
+			Maxlen: int32(len(data)),
+			Buf:    (*int8)(unsafe.Pointer(&data[0])),
+		}
+	}
+
+	if err = getmsg(fd, clp, datap, &flags); err != nil {
+		return nil, nil, 0, err
+	}
+
+	if len(cl) > 0 {
+		retCl = cl[:clp.Len]
+	}
+	if len(data) > 0 {
+		retData = data[:datap.Len]
+	}
+	return retCl, retData, flags, nil
+}
+
+func IoctlSetIntRetInt(fd int, req uint, arg int) (int, error) {
+	return ioctlRet(fd, req, uintptr(arg))
+}
+
+func IoctlSetString(fd int, req uint, val string) error {
+	bs := make([]byte, len(val)+1)
+	copy(bs[:len(bs)-1], val)
+	err := ioctl(fd, req, uintptr(unsafe.Pointer(&bs[0])))
+	runtime.KeepAlive(&bs[0])
+	return err
+}
+
+// Lifreq Helpers
+
+func (l *Lifreq) SetName(name string) error {
+	if len(name) >= len(l.Name) {
+		return fmt.Errorf("name cannot be more than %d characters", len(l.Name)-1)
+	}
+	for i := range name {
+		l.Name[i] = int8(name[i])
+	}
+	return nil
+}
+
+func (l *Lifreq) SetLifruInt(d int) {
+	*(*int)(unsafe.Pointer(&l.Lifru[0])) = d
+}
+
+func (l *Lifreq) GetLifruInt() int {
+	return *(*int)(unsafe.Pointer(&l.Lifru[0]))
+}
+
+func IoctlLifreq(fd int, req uint, l *Lifreq) error {
+	return ioctl(fd, req, uintptr(unsafe.Pointer(l)))
+}
+
+// Strioctl Helpers
+
+func (s *Strioctl) SetInt(i int) {
+	s.Len = int32(unsafe.Sizeof(i))
+	s.Dp = (*int8)(unsafe.Pointer(&i))
+}
+
+func IoctlSetStrioctlRetInt(fd int, req uint, s *Strioctl) (int, error) {
+	return ioctlRet(fd, req, uintptr(unsafe.Pointer(s)))
+}