Date: Mon, 20 Feb 2006 22:18:29 +0300 From: Yar Tikhiy <yar@comp.chem.msu.su> To: freebsd-stable@freebsd.org Cc: Dmitry Morozovsky <marck@rinet.ru> Subject: Re: RELENG_6 weird '..' permission troubles Message-ID: <20060220191829.GE57043@comp.chem.msu.su> In-Reply-To: <20060219122747.GA42983@mid.pc5.i.0x5.de> References: <20060216161726.M91053@woozle.rinet.ru> <20060216074912.K18952@extra.rwsystems.net> <20060216165612.M91053@woozle.rinet.ru> <20060219105852.GC20500@comp.chem.msu.su> <20060219122747.GA42983@mid.pc5.i.0x5.de>
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On Sun, Feb 19, 2006 at 01:27:48PM +0100, Nicolas Rachinsky wrote: > * Yar Tikhiy <yar@comp.chem.msu.su> [2006-02-19 13:58 +0300]: > > This looks like a file-a-PR case if you are sure you didn't overlook > > anything. To the best of my knowledge, the underlying mount point > > permissions should affect nothing since the FS was mounted. But > > you didn't show us output from "ls -la /" so please judge by yourself. > > This behaviour is known and documented. > > http://www.freebsd.org/cgi/man.cgi?query=mount&apropos=0&sektion=0&manpath=FreeBSD+6.0-RELEASE+and+Ports&format=html > > After a successful mount, the permissions on the original mount point > determine if .. is accessible from the mounted file system. The minimum > permissions for the mount point for traversal across the mount point in > both directions to be possible for all users is 0111 (execute for all). Thanks for pointing us out at this. To my shame, I read about the caveat some years ago, but then forgot about it completely because had never run into it in my practice. -- Yar
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