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| author | Ondřej Surý <ondrej@sury.org> | 2011-09-13 13:11:55 +0200 | 
|---|---|---|
| committer | Ondřej Surý <ondrej@sury.org> | 2011-09-13 13:11:55 +0200 | 
| commit | 80f18fc933cf3f3e829c5455a1023d69f7b86e52 (patch) | |
| tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /src/pkg/syscall/sockcmsg_unix.go | |
| parent | 28592ee1ea1f5cdffcf85472f9de0285d928cf12 (diff) | |
| download | golang-80f18fc933cf3f3e829c5455a1023d69f7b86e52.tar.gz | |
Imported Upstream version 60
Diffstat (limited to 'src/pkg/syscall/sockcmsg_unix.go')
| -rw-r--r-- | src/pkg/syscall/sockcmsg_unix.go | 65 | 
1 files changed, 0 insertions, 65 deletions
| diff --git a/src/pkg/syscall/sockcmsg_unix.go b/src/pkg/syscall/sockcmsg_unix.go deleted file mode 100644 index f0c05eaf3..000000000 --- a/src/pkg/syscall/sockcmsg_unix.go +++ /dev/null @@ -1,65 +0,0 @@ -// Copyright 2011 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. - -// Socket control messages - -package syscall - -import ( -	"unsafe" -) - -// Round the length of a raw sockaddr up to align it propery. -func cmsgAlignOf(salen int) int { -	salign := sizeofPtr -	// NOTE: It seems like 64-bit Darwin kernel still requires 32-bit -	// aligned access to BSD subsystem. -	if darwinAMD64 { -		salign = 4 -	} -	if salen == 0 { -		return salign -	} -	return (salen + salign - 1) & ^(salign - 1) -} - -func cmsgLen(datalen int) int { -	return cmsgAlignOf(SizeofCmsghdr) + datalen -} - -type SocketControlMessage struct { -	Header Cmsghdr -	Data   []byte -} - -func ParseSocketControlMessage(buf []byte) ([]SocketControlMessage, int) { -	var ( -		h     *Cmsghdr -		dbuf  []byte -		e     int -		cmsgs []SocketControlMessage -	) - -	for len(buf) >= cmsgLen(0) { -		h, dbuf, e = socketControlMessageHeaderAndData(buf) -		if e != 0 { -			break -		} -		m := SocketControlMessage{} -		m.Header = *h -		m.Data = dbuf[:int(h.Len)-cmsgAlignOf(SizeofCmsghdr)] -		cmsgs = append(cmsgs, m) -		buf = buf[cmsgAlignOf(int(h.Len)):] -	} - -	return cmsgs, e -} - -func socketControlMessageHeaderAndData(buf []byte) (*Cmsghdr, []byte, int) { -	h := (*Cmsghdr)(unsafe.Pointer(&buf[0])) -	if h.Len < SizeofCmsghdr || int(h.Len) > len(buf) { -		return nil, nil, EINVAL -	} -	return h, buf[cmsgAlignOf(SizeofCmsghdr):], 0 -} | 
