splice: add build tag to prevent building other than linux

Change-Id: Ib1e1e1054db73df031e4be958206fc94bbea1236

splice/copy.go

+//go:build linux
+
 // Copyright 2016 the Go-FUSE Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

splice/copy_test.go

+//go:build linux
+
 // Copyright 2016 the Go-FUSE Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

splice/pair.go

+//go:build linux
+
 // Copyright 2016 the Go-FUSE Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

splice/pair_darwin.go

-// Copyright 2016 the Go-FUSE Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package splice
-
-func (p *Pair) LoadFromAt(fd uintptr, sz int, off int64) (int, error) {
-	panic("not implemented")
-	return 0, nil
-}
-
-func (p *Pair) LoadFrom(fd uintptr, sz int) (int, error) {
-	panic("not implemented")
-	return 0, nil
-}
-
-func (p *Pair) WriteTo(fd uintptr, n int) (int, error) {
-	panic("not implemented")
-	return 0, nil
-}

splice/pool.go

+//go:build linux
+
 // Copyright 2016 the Go-FUSE Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

splice/splice.go

+//go:build linux
+
 // Copyright 2016 the Go-FUSE Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.

splice/splice_test.go

+//go:build linux
+
 // Copyright 2016 the Go-FUSE Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.