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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1329996416.25314.12.camel@perseus.themaw.net>
Date:	Thu, 23 Feb 2012 19:26:56 +0800
From:	Ian Kent <raven@...maw.net>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Thomas Meyer <thomas@...3r.de>, 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

On Thu, 2012-02-23 at 19:20 +0800, Ian Kent wrote:
> On Wed, 2012-02-22 at 22:31 -0800, H. Peter Anvin wrote:
> > However, I liked Linus' approach.of using the version ioctl; any reason not to?
> 
> Not really, although that ioctl is used it doesn't have to be but you
> must mount the autofs file system to use it. Setting a timeout is
> another ioctl that is almost mandatory although not using it amounts to
> saying you don't want anything to expire which is valid.

The open, to get an ioctl is another that pretty much must be done to
use the mount.

> 
> > 
> > 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
> > 
> 


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/