X-Recipient: archive-cygwin@delorie.com X-SWARE-Spam-Status: No, hits=-4.5 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,KHOP_THREADED,RCVD_IN_HOSTKARMA_W,RCVD_IN_HOSTKARMA_WL X-Spam-Check-By: sourceware.org Message-ID: <502904B1.6040403@hones.org.uk> Date: Mon, 13 Aug 2012 14:44:17 +0100 From: Cliff Hones User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20120713 Thunderbird/14.0 MIME-Version: 1.0 To: cygwin@cygwin.com Subject: Re: Side-by-side configuration is incorrect reported as permission denied References: <5025C431.7050201@cygwin.com> <20120812170641.GC32748@ednor.casa.cgf.cx> <20120812205407.GA7337@ednor.casa.cgf.cx> <5028B9D5.6050007@gmx.de> In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Score: -0.0 (/) (knockando.watchfront.net.uk) X-Spam-Report: knockando.watchfront.net.uk has scanned this email for spam. Results:- T_RP_MATCHES_RCVD=-0.01 (total -0.0, current threshold 5.0) X-IsSubscribed: yes Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com On 13/08/2012 13:51, Earnie Boyd wrote: > On Mon, Aug 13, 2012 at 4:24 AM, Herbert Stocker wrote: >> Hi, >> >> Imho, EACCESS is indeed a bit misleading because it suggests permission >> problems. Better would be to have an EFAIL as a generic error. Actually i >> was missing an EFAIL several times when my programs needed to return >> an error code that did not match well with what i found in errno.h . > > You may think it is misleading but > http://pubs.opengroup.org/onlinepubs/009604499/functions/exec.html > states that EACCESS is the correct value. Well, for a start that's an POSIX V1. Here's a link to V2 exec: http://pubs.opengroup.org/onlinepubs/9699919799/functions/exec.html I don't see in the description for EACCES [Note - one S, not two] that it should be returned when there is a missing runtime component. Also, see this general page on errors. The errors documented for a particular function aren't intended to be exhaustive. An implementation can return others as long as it is consistent. http://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_03 In any case Cygwin's primary aim is to provide a Linux-like environment, not pure POSIX. Linux exec/execve manpages list many more error codes. -- Cliff -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple