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Date: Tue, 10 Mar 2009 19:24:53 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: enlarge MAXSYMLINKS
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On Mar 10 19:05, Denis Excoffier wrote:
>
> Again about symbolic links, here is some new inputs:
>
> 1) MAXSYMLINKS is no longer used in modern Cygwin's;
>    indeed, cygwin-1.5.25-15 uses MAX_LINK_DEPTH and
>    cygwin-1.7.0-42 uses SYMLOOP_MAX; both are set to 10
>    (in ./winsup/cygwin/path.h for 1.5 and in
>    ./winsup/cygwin/include/limits.h for 1.7)
>
> 2) whether the filesystem is NTFS or not makes no difference;
>    whether the symlinks are created using winsymlinks or nowinsymlinks
>    makes no difference
>
> 3) the only clean way to make cygwin1.dll accept a chain of 32 symlinks
>    (instead of 10) is through recompilation

You know that _POSIX_SYMLOOP_MAX is 8 and using everything beyond that
value is non-portable and just curtesy, right?  Setting SYMLOOP_MAX to
10 is setting it to some arbitrary value >= _POSIX_SYMLOOP_MAX which
should be sufficient in all cases.

The MAXSYMLINKS value you're referring to in your original mail has
nothing to do with Cygwin.  You found it in newlib/libc/sys/rtems which
is, no surprise I hope, RTEMS specific.


Corinna

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Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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