diff --git a/vendor/golang.org/x/sys/unix/syscall_netbsd.go b/vendor/golang.org/x/sys/unix/syscall_netbsd.go
new file mode 100644
index 0000000..3e3f075
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/syscall_netbsd.go
@@ -0,0 +1,620 @@
+// Copyright 2009,2010 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.
+
+// NetBSD system calls.
+// This file is compiled as ordinary Go code,
+// but it is also input to mksyscall,
+// which parses the //sys lines and generates system call stubs.
+// Note that sometimes we use a lowercase //sys name and wrap
+// it in our own nicer implementation, either here or in
+// syscall_bsd.go or syscall_unix.go.
+
+package unix
+
+import (
+	"runtime"
+	"syscall"
+	"unsafe"
+)
+
+//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
+
+// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
+type SockaddrDatalink struct {
+	Len    uint8
+	Family uint8
+	Index  uint16
+	Type   uint8
+	Nlen   uint8
+	Alen   uint8
+	Slen   uint8
+	Data   [12]int8
+	raw    RawSockaddrDatalink
+}
+
+func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
+
+func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
+	var olen uintptr
+
+	// Get a list of all sysctl nodes below the given MIB by performing
+	// a sysctl for the given MIB with CTL_QUERY appended.
+	mib = append(mib, CTL_QUERY)
+	qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
+	qp := (*byte)(unsafe.Pointer(&qnode))
+	sz := unsafe.Sizeof(qnode)
+	if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
+		return nil, err
+	}
+
+	// Now that we know the size, get the actual nodes.
+	nodes = make([]Sysctlnode, olen/sz)
+	np := (*byte)(unsafe.Pointer(&nodes[0]))
+	if err = sysctl(mib, np, &olen, qp, sz); err != nil {
+		return nil, err
+	}
+
+	return nodes, nil
+}
+
+func nametomib(name string) (mib []_C_int, err error) {
+	// Split name into components.
+	var parts []string
+	last := 0
+	for i := 0; i < len(name); i++ {
+		if name[i] == '.' {
+			parts = append(parts, name[last:i])
+			last = i + 1
+		}
+	}
+	parts = append(parts, name[last:])
+
+	// Discover the nodes and construct the MIB OID.
+	for partno, part := range parts {
+		nodes, err := sysctlNodes(mib)
+		if err != nil {
+			return nil, err
+		}
+		for _, node := range nodes {
+			n := make([]byte, 0)
+			for i := range node.Name {
+				if node.Name[i] != 0 {
+					n = append(n, byte(node.Name[i]))
+				}
+			}
+			if string(n) == part {
+				mib = append(mib, _C_int(node.Num))
+				break
+			}
+		}
+		if len(mib) != partno+1 {
+			return nil, EINVAL
+		}
+	}
+
+	return mib, nil
+}
+
+func direntIno(buf []byte) (uint64, bool) {
+	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
+}
+
+func direntReclen(buf []byte) (uint64, bool) {
+	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
+}
+
+func direntNamlen(buf []byte) (uint64, bool) {
+	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
+}
+
+func SysctlClockinfo(name string) (*Clockinfo, error) {
+	mib, err := sysctlmib(name)
+	if err != nil {
+		return nil, err
+	}
+
+	n := uintptr(SizeofClockinfo)
+	var ci Clockinfo
+	if err := sysctl(mib, (*byte)(unsafe.Pointer(&ci)), &n, nil, 0); err != nil {
+		return nil, err
+	}
+	if n != SizeofClockinfo {
+		return nil, EIO
+	}
+	return &ci, nil
+}
+
+//sysnb pipe() (fd1 int, fd2 int, err error)
+func Pipe(p []int) (err error) {
+	if len(p) != 2 {
+		return EINVAL
+	}
+	p[0], p[1], err = pipe()
+	return
+}
+
+//sys Getdents(fd int, buf []byte) (n int, err error)
+func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
+	n, err = Getdents(fd, buf)
+	if err != nil || basep == nil {
+		return
+	}
+
+	var off int64
+	off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
+	if err != nil {
+		*basep = ^uintptr(0)
+		return
+	}
+	*basep = uintptr(off)
+	if unsafe.Sizeof(*basep) == 8 {
+		return
+	}
+	if off>>32 != 0 {
+		// We can't stuff the offset back into a uintptr, so any
+		// future calls would be suspect. Generate an error.
+		// EIO is allowed by getdirentries.
+		err = EIO
+	}
+	return
+}
+
+const ImplementsGetwd = true
+
+//sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
+
+func Getwd() (string, error) {
+	var buf [PathMax]byte
+	_, err := Getcwd(buf[0:])
+	if err != nil {
+		return "", err
+	}
+	n := clen(buf[:])
+	if n < 1 {
+		return "", EINVAL
+	}
+	return string(buf[:n]), nil
+}
+
+// TODO
+func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
+	return -1, ENOSYS
+}
+
+func setattrlistTimes(path string, times []Timespec, flags int) error {
+	// used on Darwin for UtimesNano
+	return ENOSYS
+}
+
+//sys	ioctl(fd int, req uint, arg uintptr) (err error)
+
+func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
+	var value Ptmget
+	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+	runtime.KeepAlive(value)
+	return &value, err
+}
+
+func Uname(uname *Utsname) error {
+	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
+	n := unsafe.Sizeof(uname.Sysname)
+	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
+		return err
+	}
+
+	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
+	n = unsafe.Sizeof(uname.Nodename)
+	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
+		return err
+	}
+
+	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
+	n = unsafe.Sizeof(uname.Release)
+	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
+		return err
+	}
+
+	mib = []_C_int{CTL_KERN, KERN_VERSION}
+	n = unsafe.Sizeof(uname.Version)
+	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
+		return err
+	}
+
+	// The version might have newlines or tabs in it, convert them to
+	// spaces.
+	for i, b := range uname.Version {
+		if b == '\n' || b == '\t' {
+			if i == len(uname.Version)-1 {
+				uname.Version[i] = 0
+			} else {
+				uname.Version[i] = ' '
+			}
+		}
+	}
+
+	mib = []_C_int{CTL_HW, HW_MACHINE}
+	n = unsafe.Sizeof(uname.Machine)
+	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
+	if raceenabled {
+		raceReleaseMerge(unsafe.Pointer(&ioSync))
+	}
+	return sendfile(outfd, infd, offset, count)
+}
+
+/*
+ * Exposed directly
+ */
+//sys	Access(path string, mode uint32) (err error)
+//sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
+//sys	Chdir(path string) (err error)
+//sys	Chflags(path string, flags int) (err error)
+//sys	Chmod(path string, mode uint32) (err error)
+//sys	Chown(path string, uid int, gid int) (err error)
+//sys	Chroot(path string) (err error)
+//sys	Close(fd int) (err error)
+//sys	Dup(fd int) (nfd int, err error)
+//sys	Dup2(from int, to int) (err error)
+//sys	Exit(code int)
+//sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
+//sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
+//sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
+//sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
+//sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
+//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
+//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
+//sys	Fchdir(fd int) (err error)
+//sys	Fchflags(fd int, flags int) (err error)
+//sys	Fchmod(fd int, mode uint32) (err error)
+//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
+//sys	Fchown(fd int, uid int, gid int) (err error)
+//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
+//sys	Flock(fd int, how int) (err error)
+//sys	Fpathconf(fd int, name int) (val int, err error)
+//sys	Fstat(fd int, stat *Stat_t) (err error)
+//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
+//sys	Fsync(fd int) (err error)
+//sys	Ftruncate(fd int, length int64) (err error)
+//sysnb	Getegid() (egid int)
+//sysnb	Geteuid() (uid int)
+//sysnb	Getgid() (gid int)
+//sysnb	Getpgid(pid int) (pgid int, err error)
+//sysnb	Getpgrp() (pgrp int)
+//sysnb	Getpid() (pid int)
+//sysnb	Getppid() (ppid int)
+//sys	Getpriority(which int, who int) (prio int, err error)
+//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
+//sysnb	Getrusage(who int, rusage *Rusage) (err error)
+//sysnb	Getsid(pid int) (sid int, err error)
+//sysnb	Gettimeofday(tv *Timeval) (err error)
+//sysnb	Getuid() (uid int)
+//sys	Issetugid() (tainted bool)
+//sys	Kill(pid int, signum syscall.Signal) (err error)
+//sys	Kqueue() (fd int, err error)
+//sys	Lchown(path string, uid int, gid int) (err error)
+//sys	Link(path string, link string) (err error)
+//sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
+//sys	Listen(s int, backlog int) (err error)
+//sys	Lstat(path string, stat *Stat_t) (err error)
+//sys	Mkdir(path string, mode uint32) (err error)
+//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
+//sys	Mkfifo(path string, mode uint32) (err error)
+//sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)
+//sys	Mknod(path string, mode uint32, dev int) (err error)
+//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
+//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
+//sys	Open(path string, mode int, perm uint32) (fd int, err error)
+//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
+//sys	Pathconf(path string, name int) (val int, err error)
+//sys	Pread(fd int, p []byte, offset int64) (n int, err error)
+//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
+//sys	read(fd int, p []byte) (n int, err error)
+//sys	Readlink(path string, buf []byte) (n int, err error)
+//sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
+//sys	Rename(from string, to string) (err error)
+//sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
+//sys	Revoke(path string) (err error)
+//sys	Rmdir(path string) (err error)
+//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
+//sys	Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
+//sysnb	Setegid(egid int) (err error)
+//sysnb	Seteuid(euid int) (err error)
+//sysnb	Setgid(gid int) (err error)
+//sysnb	Setpgid(pid int, pgid int) (err error)
+//sys	Setpriority(which int, who int, prio int) (err error)
+//sysnb	Setregid(rgid int, egid int) (err error)
+//sysnb	Setreuid(ruid int, euid int) (err error)
+//sysnb	Setrlimit(which int, lim *Rlimit) (err error)
+//sysnb	Setsid() (pid int, err error)
+//sysnb	Settimeofday(tp *Timeval) (err error)
+//sysnb	Setuid(uid int) (err error)
+//sys	Stat(path string, stat *Stat_t) (err error)
+//sys	Symlink(path string, link string) (err error)
+//sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
+//sys	Sync() (err error)
+//sys	Truncate(path string, length int64) (err error)
+//sys	Umask(newmask int) (oldmask int)
+//sys	Unlink(path string) (err error)
+//sys	Unlinkat(dirfd int, path string, flags int) (err error)
+//sys	Unmount(path string, flags int) (err error)
+//sys	write(fd int, p []byte) (n int, err error)
+//sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
+//sys	munmap(addr uintptr, length uintptr) (err error)
+//sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
+//sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
+//sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
+
+/*
+ * Unimplemented
+ */
+// ____semctl13
+// __clone
+// __fhopen40
+// __fhstat40
+// __fhstatvfs140
+// __fstat30
+// __getcwd
+// __getfh30
+// __getlogin
+// __lstat30
+// __mount50
+// __msgctl13
+// __msync13
+// __ntp_gettime30
+// __posix_chown
+// __posix_fchown
+// __posix_lchown
+// __posix_rename
+// __setlogin
+// __shmctl13
+// __sigaction_sigtramp
+// __sigaltstack14
+// __sigpending14
+// __sigprocmask14
+// __sigsuspend14
+// __sigtimedwait
+// __stat30
+// __syscall
+// __vfork14
+// _ksem_close
+// _ksem_destroy
+// _ksem_getvalue
+// _ksem_init
+// _ksem_open
+// _ksem_post
+// _ksem_trywait
+// _ksem_unlink
+// _ksem_wait
+// _lwp_continue
+// _lwp_create
+// _lwp_ctl
+// _lwp_detach
+// _lwp_exit
+// _lwp_getname
+// _lwp_getprivate
+// _lwp_kill
+// _lwp_park
+// _lwp_self
+// _lwp_setname
+// _lwp_setprivate
+// _lwp_suspend
+// _lwp_unpark
+// _lwp_unpark_all
+// _lwp_wait
+// _lwp_wakeup
+// _pset_bind
+// _sched_getaffinity
+// _sched_getparam
+// _sched_setaffinity
+// _sched_setparam
+// acct
+// aio_cancel
+// aio_error
+// aio_fsync
+// aio_read
+// aio_return
+// aio_suspend
+// aio_write
+// break
+// clock_getres
+// clock_gettime
+// clock_settime
+// compat_09_ogetdomainname
+// compat_09_osetdomainname
+// compat_09_ouname
+// compat_10_omsgsys
+// compat_10_osemsys
+// compat_10_oshmsys
+// compat_12_fstat12
+// compat_12_getdirentries
+// compat_12_lstat12
+// compat_12_msync
+// compat_12_oreboot
+// compat_12_oswapon
+// compat_12_stat12
+// compat_13_sigaction13
+// compat_13_sigaltstack13
+// compat_13_sigpending13
+// compat_13_sigprocmask13
+// compat_13_sigreturn13
+// compat_13_sigsuspend13
+// compat_14___semctl
+// compat_14_msgctl
+// compat_14_shmctl
+// compat_16___sigaction14
+// compat_16___sigreturn14
+// compat_20_fhstatfs
+// compat_20_fstatfs
+// compat_20_getfsstat
+// compat_20_statfs
+// compat_30___fhstat30
+// compat_30___fstat13
+// compat_30___lstat13
+// compat_30___stat13
+// compat_30_fhopen
+// compat_30_fhstat
+// compat_30_fhstatvfs1
+// compat_30_getdents
+// compat_30_getfh
+// compat_30_ntp_gettime
+// compat_30_socket
+// compat_40_mount
+// compat_43_fstat43
+// compat_43_lstat43
+// compat_43_oaccept
+// compat_43_ocreat
+// compat_43_oftruncate
+// compat_43_ogetdirentries
+// compat_43_ogetdtablesize
+// compat_43_ogethostid
+// compat_43_ogethostname
+// compat_43_ogetkerninfo
+// compat_43_ogetpagesize
+// compat_43_ogetpeername
+// compat_43_ogetrlimit
+// compat_43_ogetsockname
+// compat_43_okillpg
+// compat_43_olseek
+// compat_43_ommap
+// compat_43_oquota
+// compat_43_orecv
+// compat_43_orecvfrom
+// compat_43_orecvmsg
+// compat_43_osend
+// compat_43_osendmsg
+// compat_43_osethostid
+// compat_43_osethostname
+// compat_43_osetrlimit
+// compat_43_osigblock
+// compat_43_osigsetmask
+// compat_43_osigstack
+// compat_43_osigvec
+// compat_43_otruncate
+// compat_43_owait
+// compat_43_stat43
+// execve
+// extattr_delete_fd
+// extattr_delete_file
+// extattr_delete_link
+// extattr_get_fd
+// extattr_get_file
+// extattr_get_link
+// extattr_list_fd
+// extattr_list_file
+// extattr_list_link
+// extattr_set_fd
+// extattr_set_file
+// extattr_set_link
+// extattrctl
+// fchroot
+// fdatasync
+// fgetxattr
+// fktrace
+// flistxattr
+// fork
+// fremovexattr
+// fsetxattr
+// fstatvfs1
+// fsync_range
+// getcontext
+// getitimer
+// getvfsstat
+// getxattr
+// ktrace
+// lchflags
+// lchmod
+// lfs_bmapv
+// lfs_markv
+// lfs_segclean
+// lfs_segwait
+// lgetxattr
+// lio_listio
+// listxattr
+// llistxattr
+// lremovexattr
+// lseek
+// lsetxattr
+// lutimes
+// madvise
+// mincore
+// minherit
+// modctl
+// mq_close
+// mq_getattr
+// mq_notify
+// mq_open
+// mq_receive
+// mq_send
+// mq_setattr
+// mq_timedreceive
+// mq_timedsend
+// mq_unlink
+// mremap
+// msgget
+// msgrcv
+// msgsnd
+// nfssvc
+// ntp_adjtime
+// pmc_control
+// pmc_get_info
+// pollts
+// preadv
+// profil
+// pselect
+// pset_assign
+// pset_create
+// pset_destroy
+// ptrace
+// pwritev
+// quotactl
+// rasctl
+// readv
+// reboot
+// removexattr
+// sa_enable
+// sa_preempt
+// sa_register
+// sa_setconcurrency
+// sa_stacks
+// sa_yield
+// sbrk
+// sched_yield
+// semconfig
+// semget
+// semop
+// setcontext
+// setitimer
+// setxattr
+// shmat
+// shmdt
+// shmget
+// sstk
+// statvfs1
+// swapctl
+// sysarch
+// syscall
+// timer_create
+// timer_delete
+// timer_getoverrun
+// timer_gettime
+// timer_settime
+// undelete
+// utrace
+// uuidgen
+// vadvise
+// vfork
+// writev