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Date:	Wed, 21 Apr 2021 19:07:56 +0900
To:	cygwin AT cygwin DOT com
Subject:	Re: Cannot access system32 directory from 32 bit cygwin after the
	commit 456c3a46
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From:	Takashi Yano via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
Errors-To:	cygwin-bounces AT cygwin DOT com
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On Wed, 21 Apr 2021 12:22:33 +0300
Andrey Repin wrote:
> Greetings, Takashi Yano!
> 
> > On Wed, 21 Apr 2021 11:49:00 +0300
> > Andrey Repin wrote:
> >> Greetings, Takashi Yano!
> >> 
> >> > I noticed the problem that /cygdrive/c/Windows/System32 directory
> >> > can be no longer accessed from 32 bit cygwin (WOW64) after the
> >> > commit:
> >> 
> >> > commit 456c3a46386f38887407603b2c64b7f63a4871c5
> >> > Author: Corinna Vinschen <corinna AT vinschen DOT de>
> >> > Date:   Mon Apr 19 14:49:14 2021 +0200
> >> 
> >> >     Cygwin: path_conv: Try to handle native symlinks more sanely
> >> 
> >> >     For local paths, add a check if the inner path components contain native
> >> >     symlinks or junctions.  Compare the incoming path with the path returned
> >> >     by NtQueryInformationFile(FileNameInformation).  If they differ, there
> >> >     must be at least one native symlink or junction in the path.  If so,
> >> >     treat the currently evaluated file as non-existant.  This forces
> >> >     path_conv::check to backtrack inner path components until we eliminated
> >> >     all native symlinks or junctions and have a normalized path.
> >> 
> >> >     Signed-off-by: Corinna Vinschen <corinna AT vinschen DOT de>
> >> 
> >> > Reverting this commit resolves the issue.
> >> 
> >> > 64 bit cygwin does not seem to be affected. Could you please
> >> > have a look?
> >> 
> >> How exactly it "can no longer be accessed" ? Is it opening WOW64 System32 or
> >> not opening anything at all?
> 
> > If "ls /cygdrive/c/Windows/System32" is executed, the result is:
> > ls: cannot access '/cygdrive/c/Windows/System32': No such file or directory
> 
> > Also, if try to execute "cmd.exe" in System32 directory, the result is:
> > bash: cmd.exe: command not found.
> > Of cource, /cygdrive/c/WINDOWS/system32 exists in the PATH.
> 
> > So I mean "not opening anything at all".
> 
> Just curious, can you access SysNative at the same time?
> 
> ls -l /proc/cygdrive/c/WINDOWS/SysNative/

This directory is also inaccessible.


-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

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