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Date: Mon, 13 Aug 2012 14:44:17 +0100
From: Cliff Hones <cliff AT hones DOT org DOT uk>
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Subject: Re: Side-by-side configuration is incorrect reported as permission denied
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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


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