From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [Bugme-new] [Bug 15909] New: open("a/", O_NOFOLLOW) fails with
 ELOOP if "a" is a symbolic link to a directory.
Date: Thu, 6 May 2010 14:30:02 -0700
Message-ID: <20100506143002.0381501b.akpm@linux-foundation.org>
References: <bug-15909-10286@https.bugzilla.kernel.org/>
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(switched to email.  Please respond via emailed reply-to-all, not via the
bugzilla web interface).

On Wed, 5 May 2010 13:01:22 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:

> https://bugzilla.kernel.org/show_bug.cgi?id=15909
> 
>            Summary: open("a/",O_NOFOLLOW) fails with ELOOP if "a" is a
>                     symbolic link to a directory.
>            Product: File System
>            Version: 2.5
>     Kernel Version: 2.6.34-rc6
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: high
>           Priority: P1
>          Component: Other
>         AssignedTo: fs_other@kernel-bugs.osdl.org
>         ReportedBy: tolzmann@molgen.mpg.de
>         Regression: No
> 
> 
> mkdir c
> ln -s c a
> 
> f=open("a/",O_RDONLY+O_NOFOLLOW)
> 
> fails with ELOOP. However, this open should behave like open("a/.") not like
> open("a") according to path_resolution(7). In kernel version 2.6.32 the open
> worked as documented. 
> 
> On a higher level this bug makes
> 
> find a/
> 
> to fail.
> 

It sounds like this 2.6.32->2.6.34-rc6 regression could have pretty
serious ramifications for some users.  Does anyone know whcih commit
might have caused it?