Date: Mon, 18 Feb 2013 17:29:56 +0100 From: Mateusz Guzik <mjguzik@gmail.com> To: Jamie Gritton <jamie@FreeBSD.org> Cc: Harald Schmalzbauer <h.schmalzbauer@omnilan.de>, freebsd-stable <freebsd-stable@FreeBSD.org>, freebsd-jail <jail@FreeBSD.org> Subject: Re: new jail(8) ignoring devfs_ruleset? Message-ID: <20130218162956.GA1834@dft-labs.eu> In-Reply-To: <51225642.2010501@FreeBSD.org> References: <511E61F5.1000805@omnilan.de> <511EC759.4060704@FreeBSD.org> <5121EC52.5040502@omnilan.de> <51225642.2010501@FreeBSD.org>
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On Mon, Feb 18, 2013 at 09:26:42AM -0700, Jamie Gritton wrote: > On 02/18/13 01:54, Harald Schmalzbauer wrote: > > schrieb Jamie Gritton am 16.02.2013 00:40 (localtime): > >>On 02/15/13 09:27, Harald Schmalzbauer wrote: > >>> Hello, > >>> > >>>like already posted, on 9.1-R, I highly appreciate the new jail(8) and > >>>jail.conf capabilities. Thanks for that extension! > >>> > >>>Accidentally I saw that "devfs_ruleset" seems to be ignored. > >>>If I list /dev/ I see all the hosts disk devices etc. > >>>I set "devfs_ruleset = 4;" and "enforce_statfs = 1;" in jail.conf. > >>> Inside the jail, > >>>sysctl security.jail.devfs_ruleset returnes "1". > >>>But like mentioned, I can access all devices... > >>> > >>>Thanks for any help, > >>> > >>>-Harry > >> > >>devfs_ruleset is only used along with mount.devfs - do you also have > >>that set in jail.conf? > > > >Thanks for your response. > > > >Yes, I have mount.devfs; set. > >Otherwise I wouldn't have any device inside my jail. Verified - and like > >intended, right? > >Another notable discrepancy: The man page tells that devfs_rulset is "4" > >by default. > >But when I don't set devfs_rulset in jail.conf at all, inside the jail, > >'sysctl security.jail.devfs_ruleset': 0 > >When set, like mentioned above, it returns the corresponding value, but > >it doesn't have any effect. > >How gets devfs_rulset handled? Does jail(8) do the whole job? I'd like > >to help finding the source, but have missed the whole new jail evolution... > >Inside my jails, I don't have a fstab, outside I have them defined and > >enabled with "mount" - and noticed the non-reverted umounting. > > I found the problem - I noticed you mentioned 9.1-R, and took a look at > devfs(5). On CURRENT, there's a mount option "ruleset", that isn't there > on 9. > > So I'll have to get around it by running devfs(8) after the mount. I'll > work on a patch for that. > Why not MFC support for that mount option instead? -- Mateusz Guzik <mjguzik gmail.com>
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