Subject: Re: Mount option to ignore case
To: Martin Husemann <firstname.lastname@example.org>
From: Jaromir Dolecek <email@example.com>
Date: 04/02/2002 20:22:48
Martin Husemann wrote:
> > But most applications (and my brain) don't really want the rules to
> > suddenly change on them in the middle of the file system...
> Think of an NTFS, HFS or FAT32 disk that you share with another OS in
> which you dual boot your machine from time to time.
E.g. NetBSD NTFS support does implement case-insensitive file
lookups [*] and our msdosfs does too AFAIK. Some other filesystems
probably should too[**]. Note the file insensitiveness rules differ for
different filesystems (e.g. MS-DOS applied case-insensitiveness to
ASCII subset only).
Native UNIX filesystems (being if FFS, NFS, LFS or ext2fs) are case
sensitive. That is fact of life, the most simple approach and
actually locale-friendlier than the partial attempt of MS-DOS - it's
consistent, at the very least.
Perhaps it would be useful to repeat why exactly you'd like generic
'case-insensitiveness' support for all filesystems. I personally
don't see a need for this.
IMHO Samba can do much better job in translating file names than a kernel
reasonably can. FWIW, I don't expect filename translation to be
the actual performance bottleneck for Samba.
(from coutry which uses iso-8859-2 and windows-1250 encodings now, and
used about 4 other 8bit encodings in MS-DOS times)
[*] NTFS uses Unicode characters in filenames and provides provision
of 'lowercase mapping table', which is part of definition of
the filesystem. So, it's possible to implement properly
case-insensitiveness there. This is not the case for other
filesystems, where the actual implementation is mostly ad-hoc.
[**] Those which are case-insensitive in their 'native' OS, that is, for
interoperatibility reasons. Especially if we happen to be able to run
the 'native OS' binaries.
Jaromir Dolecek <jdolecek@NetBSD.org> http://www.NetBSD.org/Ports/i386/ps2.html
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