Date: Tue, 16 Aug 2005 15:10:34 +0200 From: Joost Bekkers <joost@jodocus.org> To: Dmitry Agaphonov <rzhe@agava.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Shared memory permissions question Message-ID: <20050816131034.GA44545@bps.jodocus.org> In-Reply-To: <20050816165115.2387c14f@rzhe.agava-dubna.local> References: <20050816165115.2387c14f@rzhe.agava-dubna.local>
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On Tue, Aug 16, 2005 at 04:51:15PM +0400, Dmitry Agaphonov wrote: > Hello, > > > I have user A from group G creating shared memory M with permissions > 0060. After this, A fails to attach M due to permission denied. > However, another user B from the same group G successfully attaches M. > User A manages to attach only if permissions 0600 added for M. > > Why the system disregards group permissions for user A? Is it correct > behaviour? > > This is happening on FreeBSD 4.11-STABLE. > This is normal&correct behaviour. Access if granted on a best match basis: if user==owner then only user rights are applied elseif user is member of group then only group rights are applied else only 'other' rights are applied. -- greetz Joost joost@jodocus.org
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