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syscall: handle getsockname for unix sockets on openbsd 5.2

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On OpenBSD 5.2, calling getsockname on an unbound Unix domain socket
results in a successful syscall, however the AF is unset and the length
is returned as zero. This has been changed to more portable behaviour,
which will be included in the OpenBSD 5.3 release.

For now, work around this by treating a successful getsockname() call
that returns a family of AF_UNSPEC and length of zero as a AF_UNIX
socket.

Makes TestPassFD work on OpenBSD 5.2.

Fixes #4956.

R=golang-dev, minux.ma, rsc, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/7449046
This commit is contained in:
Joel Sing 2013-03-05 21:40:37 +11:00
parent add3349867
commit 1b36bcc3b5
2 changed files with 5 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

5
src/pkg/syscall/syscall_bsd.go
View file

@ -327,6 +327,11 @@ func Getsockname(fd int) (sa Sockaddr, err error) {
if err = getsockname(fd, &rsa, &len); err != nil {
return
}
// TODO(jsing): Remove after OpenBSD 5.4 is released (see issue 3349).
if runtime.GOOS == "openbsd" && rsa.Addr.Family == AF_UNSPEC && rsa.Addr.Len == 0 {
rsa.Addr.Family = AF_UNIX
rsa.Addr.Len = SizeofSockaddrUnix
}
return anyToSockaddr(&rsa)
}