Date: Fri, 30 Aug 2013 18:13:57 +0100 From: Jase Thew <jase@FreeBSD.org> To: Jamie Gritton <jamie@FreeBSD.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r252841 - in head/sys: dev/mem kern sys Message-ID: <5220D2D5.6030105@FreeBSD.org> In-Reply-To: <201307052131.r65LVGKr089550@svn.freebsd.org> References: <201307052131.r65LVGKr089550@svn.freebsd.org>
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On 05/07/2013 22:31, Jamie Gritton wrote: > Author: jamie > Date: Fri Jul 5 21:31:16 2013 > New Revision: 252841 > URL: http://svnweb.freebsd.org/changeset/base/252841 > > Log: > Add new privileges, PRIV_KMEM_READ and PRIV_KMEM_WRITE, used in opening > /dev/kmem and /dev/mem (in addition to traditional file permission checks). > PRIV_KMEM_READ is different from other PRIV_* checks in that it's allowed > by default. > > Reviewed by: kib, mckusick > Hi Jamie, As a result of this commit (and r252845), it is no longer possible to access /dev/mem and /dev/kmem inside of a jail - is this behaviour intentional? # dd if=/dev/mem bs=64 count=1 dd: /dev/mem: Operation not permitted Regards, Jase. -- Jase Thew jase@FreeBSD.org FreeBSD Ports Committer
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