From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8490 invoked by alias); 11 Apr 2015 12:36:17 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 8482 invoked by uid 89); 11 Apr 2015 12:36:16 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.4 required=5.0 tests=BAYES_00,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-wi0-f173.google.com Received: from mail-wi0-f173.google.com (HELO mail-wi0-f173.google.com) (209.85.212.173) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-GCM-SHA256 encrypted) ESMTPS; Sat, 11 Apr 2015 12:36:15 +0000 Received: by widjs5 with SMTP id js5so32761791wid.1 for ; Sat, 11 Apr 2015 05:36:12 -0700 (PDT) X-Received: by 10.180.73.230 with SMTP id o6mr5820051wiv.11.1428755772346; Sat, 11 Apr 2015 05:36:12 -0700 (PDT) Received: from [192.168.168.132] (kola909c.vsb.cz. [158.196.43.50]) by mx.google.com with ESMTPSA id w8sm2653976wja.4.2015.04.11.05.36.11 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 11 Apr 2015 05:36:11 -0700 (PDT) Message-ID: <5529151E.8000704@gmail.com> Date: Sat, 11 Apr 2015 12:36:00 -0000 From: David Macek User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Re: [TESTERS needed] New POSIX permission handling References: <20150410100703.GA4401@calimero.vinschen.de> <87lhhzcarc.fsf@Rainer.invalid> <5528E2ED.7090105@gmail.com> <20150411095958.GD19111@calimero.vinschen.de> In-Reply-To: <20150411095958.GD19111@calimero.vinschen.de> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms000506000805050208090801" X-IsSubscribed: yes X-SW-Source: 2015-04/txt/msg00205.txt.bz2 --------------ms000506000805050208090801 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Content-length: 1487 On 11. 4. 2015 11:59, Corinna Vinschen wrote: >> Out of curiosity, does the code somehow distinguish ACLs that don't >> have these default permissions (or have different permissions set for >> SYSTEM / Administrators)? >=20 > I don't quite understand the question. >=20 > For a start, I'd like to point out how POSIX ACLs are supposed to work. > http://linux.die.net/man/5/acl is a good start. This is our role model. I'm gonna read that. > The new code will compute the mask the same way as before, but it > skips the permissions of SYSTEM and Administrators while doing that. > That means, the POSIX group permission bits are not affected by > the Windows-typical permissions of SYSTEM and Administrators. >=20 > Example: >=20 > User rw- > Primary group r-- > Other user rw- > Other group r-- > SYSTEM rwx > Everyone --- >=20 > The computed POSIX MASK/CLASS_OBJ value in Cygwin 1.7.35 is the sum > of all group and secondary user permissions >=20 > rw- | r-- | rwx =3D=3D rwx >=20 > The new code ignores SYSTEM, thus the mask is >=20 > rw- | r-- =3D=3D rw- >=20=20=20=20=20=20 > Does this explain it sufficiently? Yes, thank you. My question was about the case where SYSTEM or Administrato= r doesn't have the typical permissions. From this explanation, I assume tha= t I won't be able to see any difference in the mask in that case, but it do= esn't seem to be a bad thing. --=20 David Macek --------------ms000506000805050208090801 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature Content-length: 5743 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEH AQAAoIIMbzCCBjMwggUboAMCAQICAwxvejANBgkqhkiG9w0BAQsFADCBjDEL MAkGA1UEBhMCSUwxFjAUBgNVBAoTDVN0YXJ0Q29tIEx0ZC4xKzApBgNVBAsT IlNlY3VyZSBEaWdpdGFsIENlcnRpZmljYXRlIFNpZ25pbmcxODA2BgNVBAMT L1N0YXJ0Q29tIENsYXNzIDEgUHJpbWFyeSBJbnRlcm1lZGlhdGUgQ2xpZW50 IENBMB4XDTE0MTIzMTA0MDkwNFoXDTE2MDEwMTE1NDg1M1owSjEgMB4GA1UE AwwXZGF2aWQubWFjZWsuMEBnbWFpbC5jb20xJjAkBgkqhkiG9w0BCQEWF2Rh dmlkLm1hY2VrLjBAZ21haWwuY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A MIIBCgKCAQEApuk8134+nkISIg7X7ABwKnVLgZsYi5kdXeeWpUrF1YLdLsZL 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