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Date: Fri, 6 Sep 2013 22:18:26 +0400
From: Gleb Smirnoff <glebius@FreeBSD.org>
To: Jamie Gritton <jamie@FreeBSD.org>
Subject: Re: svn commit: r255316 - head/sys/kern
Message-ID: <20130906181826.GL4574@FreeBSD.org>
References: <201309061732.r86HWTha054904@svn.freebsd.org>
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On Fri, Sep 06, 2013 at 05:32:29PM +0000, Jamie Gritton wrote:
J> Author: jamie
J> Date: Fri Sep  6 17:32:29 2013
J> New Revision: 255316
J> URL: http://svnweb.freebsd.org/changeset/base/255316
J> 
J> Log:
J>   Keep PRIV_KMEM_READ permitted inside jails as it is on the outside.
J> 
J> Modified:
J>   head/sys/kern/kern_jail.c
J> 
J> Modified: head/sys/kern/kern_jail.c
J> ==============================================================================
J> --- head/sys/kern/kern_jail.c	Fri Sep  6 17:19:57 2013	(r255315)
J> +++ head/sys/kern/kern_jail.c	Fri Sep  6 17:32:29 2013	(r255316)
J> @@ -3885,6 +3885,13 @@ prison_priv_check(struct ucred *cred, in
J>  	case PRIV_VFS_SETGID:
J>  	case PRIV_VFS_STAT:
J>  	case PRIV_VFS_STICKYFILE:
J> +
J> +		/*
J> +		 * As in the non-jail case, non-root users are expected to be
J> +		 * able to read kernel/phyiscal memory (provided /dev/[k]mem
J> +		 * exists in the jail and they have permission to access it).
J> +		 */
J> +	case PRIV_KMEM_READ:
J>  		return (0);
J>  
J>  		/*

Was that discussed anywhere or reviewed by anyone?

-- 
Totus tuus, Glebius.