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Date: Wed, 21 Apr 2021 12:22:33 +0300
From: Andrey Repin <anrdaemon AT yandex DOT ru>
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To: Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>, cygwin AT cygwin DOT com
Subject: Re: Cannot access system32 directory from 32 bit cygwin after the
 commit 456c3a46
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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/


-- 
With best regards,
Andrey Repin
Wednesday, April 21, 2021 12:18:51

Sorry for my terrible english...


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