X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:date:from:mime-version:to:subject :references:in-reply-to:content-type; q=dns; s=default; b=H6g8Ud frPHj8f0dv88kyoTb9ukv7DqvMNHqUmbdHynKYbp56FdJu7QTwAxs1K4WFvKaw5U kC7UzOBqZAvOzOrpOWT0bHyji4kw0iO7TP5f7wlKGpIG0doFWGeee9BqQGoRD6VW uMagOxjFLCe/y0jO7oR3+UBGn27CNRrPcvIak= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:date:from:mime-version:to:subject :references:in-reply-to:content-type; s=default; bh=6HCitBHzKFva mQK1hnsb82kzgdk=; b=XeEs11e2OlEZZC4GQHcEMcgX4oDdNEIEuGqPBUi1NL50 J/pxUcF1AodE9Tr07pOznHkHZ+Mf+Wy1seB8ebtC4H/qf90LlS0745lZI+s0lFgT gSCa8e9Q0BxD1F+zc1msmekzKSi5BBova/605bKvvz36XllP+RnpsAiiK3xPujE= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com 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-f174.google.com X-Received: by 10.194.92.137 with SMTP id cm9mr41915715wjb.133.1428489122997; Wed, 08 Apr 2015 03:32:02 -0700 (PDT) Message-ID: <5525038C.6010601@gmail.com> Date: Wed, 08 Apr 2015 12:31:40 +0200 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 AT cygwin DOT com Subject: Re: setfacl can kill a drive References: In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms080708060602020600070804" X-IsSubscribed: yes --------------ms080708060602020600070804 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 8. 4. 2015 12:17, Steven Penny wrote: > Also I discovered this >=20 > $ setfacl -b /cygdrive/c >=20 > After that you get this >=20 > C:\ is not accessible. > Access is denied. >=20 > Luckily this was in a virtual machine. Otherwise, can this be undone? Thi= s is > very dangerous, and I feel it should be protected similarly to > "rm --no-preserve-root" The root of the C drive should be easy to fix, as most of the directories t= here don't inherit its permissions. You should be able to use Windows Explo= rer to fix the permissions, but maybe takeown and icacls will be more preci= se tools for this task. This is the ACL for my C root: C:\> icacls . . 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