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Diffstat (limited to '')
-rw-r--r-- | dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/sockcmsg_unix_other.go | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/sockcmsg_unix_other.go b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/sockcmsg_unix_other.go new file mode 100644 index 0000000..0840fe4 --- /dev/null +++ b/dependencies/pkg/mod/golang.org/x/sys@v0.1.0/unix/sockcmsg_unix_other.go @@ -0,0 +1,47 @@ +// 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 || zos +// +build aix darwin freebsd linux netbsd openbsd solaris zos + +package unix + +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 + } + case "zos": + // z/OS socket macros use [32-bit] sizeof(int) alignment, + // not pointer width. + salign = SizeofInt + } + + return (salen + salign - 1) & ^(salign - 1) +} |