linux-kernel - Re: compat: autofs v5 packet size ambiguity

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Message-ID: <2b90acba-a8e9-485a-b2a6-608d61751f2c@email.android.com>
Date:	Wed, 22 Feb 2012 22:31:38 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Ian Kent <raven@...maw.net>, Thomas Meyer <thomas@...3r.de>
CC:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	autofs@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: Re: compat: autofs v5 packet size ambiguity - update

However, I liked Linus' approach.of using the version ioctl; any reason not to?

Ian Kent <raven@...maw.net> wrote:

>On Thu, 2012-02-23 at 10:21 +0800, Ian Kent wrote:
>> On Thu, 2012-02-23 at 09:54 +0800, Ian Kent wrote:
>> > On Thu, 2012-02-23 at 09:48 +0800, Ian Kent wrote:
>> > > On Wed, 2012-02-22 at 08:12 -0800, Linus Torvalds wrote:
>> > > > On Wed, Feb 22, 2012 at 1:32 AM, Ian Kent <raven@...maw.net>
>wrote:
>> > > > >
>> > > > > Oh, DOH ...
>> > > > >
>> > > > > The process mounting the autofs mount is passing the pipe it
>will use
>> > > > > for communication via a mount option so we can do this right
>in
>> > > > > fill_super.
>> > > > 
>> > > > No, we really cannot.
>> > > 
>> > > Sorry, I think your wrong this time.
>> > 
>> > On second thought, I suppose other user space users don't "have" to
>use
>> > mount(2) ....
>> 
>> Thomas, what does systemd use to mount the autofs mounts that it
>uses?
>
>Mmm ... AFAICS systemd uses mount(2) so that looks OK too.
>
>Ian

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