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Date: Sat, 24 Aug 2019 07:54:42 +0200
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From: Houder <houder AT xs4all DOT nl>
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To: cygwin AT cygwin DOT com
Subject: Re: Empty file without "x" permission is successfully executable on Cygwin
References: <BL0PR0901MB430826D79AF2771A6A5C2A99A5D50 AT BL0PR0901MB4308 DOT namprd09 DOT prod DOT outlook DOT com> <f7311e1f60cba7ebae136109f077d2d4 AT smtp-cloud9 DOT xs4all DOT net>
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On Wed, 07 Aug 2019 08:12:28, Houder  wrote:
> On Tue, 6 Aug 2019 19:09:04, Lavrentiev, Anton (NIH/NLM/NCBI) [C] via cygwin"  wrote:
> > > zero-sized? Irrelevant.
> > 
> > It is actually very relevant.  Because executing an empty script results in=
> >  "success" (exit code 0) -- that creates a false-positive.
[snip]

> What I meant, was: a regular file (empty or not), but w/o shebang and w/o the
> execute bit, will be executed by Cygwin, contrary to what happens on Unix.
> 
> This behaviour (again: different from Unix) has existed for at least a decade.
> 
> That is why I wrote: Cygwin != Linux.
> 
> When I found out, years and years ago, I assumed that the deviation was due
> to FAT filesystems (not being able to represent the x-bit).
> 
> Perhaps I was wrong. Perhaps the Cygwin maintainers merely goofed up long ago.

And again I was wrong ...

 - https://cygwin.com/ml/cygwin/2009-06/msg00721.html
   ( Re: Cygwin 1.7: Possible file permission errors in 'base-files' )
   "I've put that on my TODO list."

 - https://cygwin.com/ml/cygwin/2009-06/msg00727.html
   ( HEADSUP maintainers: Packages install scripts without execute permissions )
   "I have the patch for this ready ..."

Now that the problem has been fixed by Corinna, she can remove it from her TODO
list :-P

Henri


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