linux-kernel - Re: Finding hardlinks

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Message-ID: <20070103223024.GA5078@elf.ucw.cz>
Date:	Wed, 3 Jan 2007 23:30:24 +0100
From:	Pavel Machek <pavel@....cz>
To:	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>
Cc:	Frank van Maarseveen <frankvm@...nkvm.com>,
	Jan Harkes <jaharkes@...cmu.edu>,
	Arjan van de Ven <arjan@...radead.org>,
	Miklos Szeredi <miklos@...redi.hu>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: Finding hardlinks

Hi!

> >Sure it is. Numerous popular POSIX filesystems do that. There is a lot of
> >inode number space in 64 bit (of course it is a matter of time for it to
> >jump to 128 bit and more)
> 
> If the filesystem was designed by someone not from Unix world (FAT, SMB, 
> ...), then not. And users still want to access these filesystems.
> 
> 64-bit inode numbers space is not yet implemented on Linux --- the problem 
> is that if you return ino >= 2^32, programs compiled without 
> -D_FILE_OFFSET_BITS=64 will fail with stat() returning -EOVERFLOW --- this 
> failure is specified in POSIX, but not very useful.

Hehe, can we simply -EOVERFLOW on VFAT all the time? ...probably not
useful :-(. But ability to say "unknown" in st_ino field would
help....

								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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