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Message-ID: <20120626211319.GM544@brightrain.aerifal.cx>
Date: Tue, 26 Jun 2012 17:13:19 -0400
From: Rich Felker <dalias@...ifal.cx>
To: musl@...ts.openwall.com
Subject: Re: openssh and sendmsg() problem
On Tue, Jun 26, 2012 at 10:40:16PM +0200, Szabolcs Nagy wrote:
> > And kernel too.
> >
> > Both they define incompatible msghdr and cmsghdr structs.
> > The problem sits in cmsghdr struct, changing it's first member type to
> > 'size_t' solves openssh issue.
>
> so the issue is that the kernel and glibc uses size_t for socklen_t
> in struct msghdr and struct cmsghdr as well
>
> musl fixes msghdr but not cmsghdr
> (by using int + padding)
>
> where is it specified in posix that socklen_t should be unsigned int?
> it seems using size_t would make things easier..
Yes it would be easier, but unfortunately it's part of the LSB types
ABI and presumably the Linux kernel ABI...
Rich
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