From hetchegoyen@hasar.com Wed Mar 10 12:52:09 2010 Received: from mail.hasar.com ([200.80.204.3] helo=mx1.hasar.com) by stoneboat.aleph1.co.uk with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1NpLON-00078v-5r for yaffs@lists.aleph1.co.uk; Wed, 10 Mar 2010 12:52:09 +0000 X-HASAR-MailScanner-Watermark: 1268830313.39539@6+YjiA9sLtaHm+xS8/Gg0A Received: from mailserver.hasar.com (mailserver.hasar [192.168.1.80]) by mx1.hasar.com (8.14.2/8.14.2/ATDT) with ESMTP id o2ACppHo014629 for ; Wed, 10 Mar 2010 10:51:52 -0200 Received: (qmail 1152 invoked from network); 10 Mar 2010 12:48:55 -0000 Received: from unknown (HELO [192.0.2.142]) ([192.0.2.142]) (envelope-sender ) by 0 (qmail-ldap-1.03) with SMTP for ; 10 Mar 2010 12:48:55 -0000 Message-ID: <4B9796FE.2060609@hasar.com> Date: Wed, 10 Mar 2010 09:56:30 -0300 From: Hugo Etchegoyen User-Agent: Thunderbird 2.0.0.23 (Windows/20090812) MIME-Version: 1.0 To: yaffs@lists.aleph1.co.uk References: <201003091717.56921.manningc2@actrix.gen.nz> <4B96AB6C.8050104@hasar.com> <201003100948.56228.manningc2@actrix.gen.nz> In-Reply-To: <201003100948.56228.manningc2@actrix.gen.nz> Content-Type: multipart/alternative; boundary="------------020101020309090502030501" X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (mx1.hasar.com [192.168.1.77]); Wed, 10 Mar 2010 10:51:52 -0200 (ARST) X-HASAR-MailScanner-Information: Please contact the ISP for more information X-HASAR-MailScanner-ID: o2ACppHo014629 X-HASAR-MailScanner: Found to be clean X-HASAR-MailScanner-From: hetchegoyen@hasar.com X-SA-Exim-Connect-IP: 200.80.204.3 X-SA-Exim-Mail-From: hetchegoyen@hasar.com X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on stoneboat.aleph1.co.uk X-Spam-Level: X-Spam-Status: No, score=-0.9 required=4.5 tests=AWL,BAYES_50,HTML_MESSAGE autolearn=no version=3.2.5 X-SA-Exim-Version: 4.2.1 (built Wed, 25 Jun 2008 17:14:11 +0000) X-SA-Exim-Scanned: Yes (on stoneboat.aleph1.co.uk) Subject: Re: [Yaffs] yaffs background processing: phase 1 X-BeenThere: yaffs@lists.aleph1.co.uk X-Mailman-Version: 2.1.11 Precedence: list List-Id: Discussion of YAFFS NAND flash filesystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 10 Mar 2010 12:52:09 -0000 This is a multi-part message in MIME format. --------------020101020309090502030501 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx1.hasar.com id o2ACppHo014629 You're right, I hadn't realized that root can write the file even if it=20 doesn't have write permission. > The current permissions allow /proc/yaffs to be written by root. It is = better=20 > to limit this, IMHO. > > =20 --=20 Ing. Hugo Eduardo Etchegoyen* *Gerente Dto. Software de Base Compa=C3=B1=C3=ADa Hasar | Grupo Hasar* *Marcos Sastre y Jos=C3=A9 Ingenieros El Talar. Pacheco [B1618CSD] Buenos Aires. Argentina Tel [54 11] 4117 8900 | Fax [54 11] 4117 8998 E-mail: hetchegoyen@hasar.com Vis=C3=ADtenos en: www.hasar.com Informaci=C3=B3n legal y pol=C3=ADtica de confidenc= ialidad:=20 www.grupohasar.com/disclaimer --------------020101020309090502030501 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by mx1.hasar.com id o2ACppHo014629 You're right, I hadn't realized that root can write the file even if it doesn't have write permission.

The current permissions allow /proc/yaffs to be written by root. It is be=
tter=20
to limit this, IMHO.

--
Grupo Hasar

Ing. Hugo Eduardo Etchegoyen
Gerente Dto. Software de Base

Compa=C3= =B1=C3=ADa Hasar | Grup= o Hasar
Marcos Sastre y Jos=C3=A9 Ingenieros
El Talar. Pacheco
[B1618CSD] Buenos Aires. Argentina
Tel [54 11] 4117 8900 | Fax [54 11] 4117 8998
E-mail: hetchegoyen@hasar.com
Vis=C3=ADtenos en: www.hasar.com
Informaci=C3=B3n legal y pol=C3= =ADtica de confidencialidad: www.grupohasar.com/disclaimer

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