Re: [MiNT] opendir() regression

[Alan Hourihane <alanh@fairlite.co.uk>]

This isn't really a regression, but a feature :-)

Basically your new binaries are taking advantage of a new kernel
feature. opendir doesn't exist on older kernels and therefore your 'pwd'
binary fails. Older compiled versions of 'pwd' doesn't use opendir.

I guess I can add a check that if the new mintlib functions run on older
kernels they print out a more severe warning and fail, but it will still
fail.

Alan.

On Sun, 2010-01-31 at 14:45 +0100, Vincent Rivière wrote:
> Hello.
> 
> In order to check GCC is OK, I have just recompiled coreutils-6.9. The pwd 
> command does not work as expected in a specific case, probably due to a 
> regression in the MiNTLib.
> 
> Basically:
> root@easymint:/f>pwd
> ./pwd: cannot open directory `..': Internal error
> 
> The kernel:
> The problem happens only with old kernels and Ozk snapshot,
> but it works fine with the trunk and Helmut snapshot.
> 
> The MiNTLib:
> My old pwd compiled from the same sources with an old CVS MiNTLib works fine 
> on every kernel. This supposes that the bug is in the MiNTLib.
> 
> The current directory and file system:
> This problems appears only on ARAnyM's hostfs mounts, when the current 
> directory is a hostfs root, like /f.
> 
> The problem occurs because pwd does always opendir("..").
> As a summary, this fails on old and Ozk kernels when the current directory 
> is an hostfs root.
> 
> This has probably some relation with Alan's evolutions on directories.
> 
> See the attached testcase.
>