GNU bug report logs - #36405
26.2.90; O_PATH problem on some versions of Cygwin

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#36405: closed (26.2.90; O_PATH problem on some versions of
 Cygwin)
Date: Thu, 27 Jun 2019 20:48:03 +0000

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Your message dated Thu, 27 Jun 2019 13:47:27 -0700
with message-id <d8ae5b11-73cf-74c0-6f06-a772eccfa2aa <at> cs.ucla.edu>
and subject line Re: 26.2.90; O_PATH problem on some versions of Cygwin
has caused the debbugs.gnu.org bug report #36405,
regarding 26.2.90; O_PATH problem on some versions of Cygwin
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Ken Brown <kbrown <at> cornell.edu>
To: "bug-gnu-emacs <at> gnu.org" <bug-gnu-emacs <at> gnu.org>
Subject: 26.2.90; O_PATH problem on some versions of Cygwin
Date: Thu, 27 Jun 2019 19:28:48 +0000

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Cygwin supports the O_PATH flag starting with release 3.0.0, but it is buggy 
until release 3.0.8.  (Opening a FIFO with O_PATH causes a hang.)  The attached 
patches work around this problem.  The first patch (which still has a bug number 
that needs to be filled in) uses incorrect indentation for legibility.  The 
second patch fixes the indentation.

Ken

[0001-Avoid-O_PATH-on-versions-of-Cygwin-where-it-is-buggy.patch (text/plain, attachment)]

[0002-src-dired.c-file_attributes-Fix-indentation.patch (text/plain, attachment)]

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Ken Brown <kbrown <at> cornell.edu>
Cc: 36405-done <at> debbugs.gnu.org
Subject: Re: 26.2.90; O_PATH problem on some versions of Cygwin
Date: Thu, 27 Jun 2019 13:47:27 -0700

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Thanks, but that patch intrudes on the mainline code a bit. It's simpler 
to just disable O_PATH on Cygwin until the old Cygwin versions die out. 
Also, there's a similar issue in fileio.c. I installed the attached, 
which should work around the problem in both source files.

[0001-Work-around-Cygwin-bug-with-O_PATH.patch (text/x-patch, attachment)]

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