Re: ramfs problem... (unlink of sparse file in "D" state)

From: Stefan Traby (stefan@hello-penguin.com)
Date: Mon Jan 08 2001 - 13:18:33 EST


On Mon, Jan 08, 2001 at 01:05:49PM -0500, Alexander Viro wrote:
>
>
> On Mon, 8 Jan 2001, Stefan Traby wrote:
>
> > On Mon, Jan 08, 2001 at 04:01:10PM +0000, Alan Cox wrote:
> > > > I prefer SuS fpathconf(), pathconf() is just a wrapper to fpathconf();
> > >
> > > You can't implement it that way in the corner cases.
> >
> > I reread SuSv2 again and didn't found corner cases.
> > Do you mean FIFO/pipe stuff ? I can't see the problem in this area.
> >
> > In which case is an emulation of pathconf by fpathconf impossible ?
>
> Damnit, symlinks for one thing.

No this is no problem.

 For pathconf(), the path argument points to the pathname of a file
      or directory.

IMHO lstat can dedect this case.
Where is the problem ?
Calling pathconf with a symlink is not defined. I suggest
an implementation of "yankee doodle" for that case.
Anyway the broken SuS standard wants that pathconf follow symlinks.
Or how do you interpret this:

 [ELOOP]
           Too many symbolic links were encountered in resolving path.

But Alan's case "out of filedescriptor" fully counts.
Anyway, I personally would ignore it, but I agree, it's a completely
valid argument.

-- 

ciao - Stefan

" ( cd /lib ; ln -s libBrokenLocale-2.2.so libNiedersachsen.so ) " Stefan Traby Linux/ia32 fax: +43-3133-6107-9 Mitterlasznitzstr. 13 Linux/alpha phone: +43-3133-6107-2 8302 Nestelbach Linux/sparc http://www.hello-penguin.com Austria mailto://st.traby@opengroup.org Europe mailto://stefan@hello-penguin.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/



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