diff options
author | Jesse Duffield <jessedduffield@gmail.com> | 2019-11-13 22:28:41 +1100 |
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committer | Jesse Duffield <jessedduffield@gmail.com> | 2019-11-14 09:41:56 +1100 |
commit | 30aed94aa8451911fc1c5ba1e52ff28b180a8d31 (patch) | |
tree | b8d68cfe129a94b42077aa2f912da519bfc95e8c /vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go | |
parent | 3b1d705473494cca9894ec051d9d928c0c8926c7 (diff) |
update go gitv0.10.6
Diffstat (limited to 'vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go')
-rw-r--r-- | vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go b/vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go new file mode 100644 index 000000000..7d08dae5b --- /dev/null +++ b/vendor/golang.org/x/sys/unix/sockcmsg_unix_other.go @@ -0,0 +1,38 @@ +// 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. + +// +build aix darwin freebsd linux netbsd openbsd solaris + +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", "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 + } + } + + return (salen + salign - 1) & ^(salign - 1) +} |