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- // Copyright 2019 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.
-
- package unix
-
- // Round the length of a raw sockaddr up to align it properly.
- func cmsgAlignOf(salen int) int {
- salign := SizeofPtr
- if SizeofPtr == 8 && !supportsABI(_dragonflyABIChangeVersion) {
- // 64-bit Dragonfly before the September 2019 ABI changes still requires
- // 32-bit aligned access to network subsystem.
- salign = 4
- }
- return (salen + salign - 1) & ^(salign - 1)
- }
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