diff --git a/lchtimes_unix.go b/lchtimes_unix.go
new file mode 100644
index 0000000..7cb5300
--- /dev/null
+++ b/lchtimes_unix.go
@@ -0,0 +1,22 @@
+// +build darwin dragonfly freebsd openbsd linux netbsd solaris
+
+package mtree
+
+import (
+	"os"
+	"time"
+
+	"golang.org/x/sys/unix"
+)
+
+func lchtimes(name string, atime time.Time, mtime time.Time) error {
+	utimes := []unix.Timespec{
+		unix.NsecToTimespec(atime.UnixNano()),
+		unix.NsecToTimespec(mtime.UnixNano()),
+	}
+	if e := unix.UtimesNanoAt(unix.AT_FDCWD, name, utimes, unix.AT_SYMLINK_NOFOLLOW); e != nil {
+		return &os.PathError{Op: "chtimes", Path: name, Err: e}
+	}
+	return nil
+
+}
diff --git a/lchtimes_unsupported.go b/lchtimes_unsupported.go
new file mode 100644
index 0000000..fac0532
--- /dev/null
+++ b/lchtimes_unsupported.go
@@ -0,0 +1,11 @@
+// +build windows
+
+package mtree
+
+import (
+	"time"
+)
+
+func lchtimes(name string, atime time.Time, mtime time.Time) error {
+	return nil
+}
diff --git a/updatefuncs_linux.go b/updatefuncs_linux.go
index 4950c0f..b7d7e83 100644
--- a/updatefuncs_linux.go
+++ b/updatefuncs_linux.go
@@ -5,9 +5,6 @@ package mtree
 import (
 	"encoding/base64"
 	"os"
-	"syscall"
-	"time"
-	"unsafe"
 
 	"github.com/vbatts/go-mtree/xattr"
 )
@@ -22,37 +19,3 @@ func xattrUpdateKeywordFunc(path string, kv KeyVal) (os.FileInfo, error) {
 	}
 	return os.Lstat(path)
 }
-
-func lchtimes(name string, atime time.Time, mtime time.Time) error {
-	var utimes [2]syscall.Timespec
-	utimes[0] = syscall.NsecToTimespec(atime.UnixNano())
-	utimes[1] = syscall.NsecToTimespec(mtime.UnixNano())
-	if e := utimensat(atFdCwd, name, (*[2]syscall.Timespec)(unsafe.Pointer(&utimes[0])), atSymlinkNofollow); e != nil {
-		return &os.PathError{Op: "chtimes", Path: name, Err: e}
-	}
-	return nil
-
-}
-
-// from uapi/linux/fcntl.h
-// don't follow symlinks
-const atSymlinkNofollow = 0x100
-
-// special value for utimes as the FD for the current working directory
-const atFdCwd = -0x64
-
-func utimensat(dirfd int, path string, times *[2]syscall.Timespec, flags int) (err error) {
-	if len(times) != 2 {
-		return syscall.EINVAL
-	}
-	var _p0 *byte
-	_p0, err = syscall.BytePtrFromString(path)
-	if err != nil {
-		return
-	}
-	_, _, e1 := syscall.Syscall6(syscall.SYS_UTIMENSAT, uintptr(dirfd), uintptr(unsafe.Pointer(_p0)), uintptr(unsafe.Pointer(times)), uintptr(flags), 0, 0)
-	if e1 != 0 {
-		err = syscall.Errno(e1)
-	}
-	return
-}
diff --git a/updatefuncs_unsupported.go b/updatefuncs_unsupported.go
index a554964..9fc70e4 100644
--- a/updatefuncs_unsupported.go
+++ b/updatefuncs_unsupported.go
@@ -4,13 +4,8 @@ package mtree
 
 import (
 	"os"
-	"time"
 )
 
 func xattrUpdateKeywordFunc(path string, kv KeyVal) (os.FileInfo, error) {
 	return os.Lstat(path)
 }
-
-func lchtimes(name string, atime time.Time, mtime time.Time) error {
-	return nil
-}