From 43a123c1ae6613b3efeed291fa552ecd909d3acf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:23:18 +0200 Subject: Adding upstream version 1.20.14. Signed-off-by: Daniel Baumann --- src/syscall/sockcmsg_unix_other.go | 42 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 src/syscall/sockcmsg_unix_other.go (limited to 'src/syscall/sockcmsg_unix_other.go') diff --git a/src/syscall/sockcmsg_unix_other.go b/src/syscall/sockcmsg_unix_other.go new file mode 100644 index 0000000..845bd9d --- /dev/null +++ b/src/syscall/sockcmsg_unix_other.go @@ -0,0 +1,42 @@ +// 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. + +//go:build aix || darwin || freebsd || linux || netbsd || openbsd || solaris + +package syscall + +import ( + "runtime" +) + +// Round the length of a raw sockaddr up to align it properly. +func cmsgAlignOf(salen int) int { + salign := sizeofPtr + + // dragonfly needs to check ABI version at runtime, see cmsgAlignOf in + // sockcmsg_dragonfly.go + switch runtime.GOOS { + case "aix": + // There is no alignment on AIX. + salign = 1 + case "darwin", "ios", "illumos", "solaris": + // NOTE: It seems like 64-bit Darwin, Illumos and Solaris + // kernels still require 32-bit aligned access to network + // subsystem. + if sizeofPtr == 8 { + salign = 4 + } + case "netbsd", "openbsd": + // NetBSD and OpenBSD armv7 require 64-bit alignment. + if runtime.GOARCH == "arm" { + salign = 8 + } + // NetBSD aarch64 requires 128-bit alignment. + if runtime.GOOS == "netbsd" && runtime.GOARCH == "arm64" { + salign = 16 + } + } + + return (salen + salign - 1) & ^(salign - 1) +} -- cgit v1.2.3