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Re: Create cyg-managed filesystem possible? (RE: cygwin 1.5.0 coming- 64 bit file I/O and more)
- From: Elfyn McBratney <elfyn at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Sat, 5 Jul 2003 21:01:46 +0100
- Subject: Re: Create cyg-managed filesystem possible? (RE: cygwin 1.5.0 coming- 64 bit file I/O and more)
- References: <NGBBLLIAMFLGJEOAJCCECEHIDBAA.firstname.lastname@example.org>
- Reply-to: cygwin at cygwin dot com
On Sat, 5 Jul 2003, Hannu E K Nevalainen (garbage mail) wrote:
> > From: email@example.com [mailto:firstname.lastname@example.org]On Behalf
> > Of Christopher Faylor
> > Anyway, expect a testing version of 1.5.0 soon. Just to whet your
> > appetite a little, I also added a new mount option to this release:
> > mount -o managed c:/foo /foo
> > A managed mount means that file names are entirely managed by cygwin.
> > Any directory managed in this manner will allow the creation of files
> > like "aux", "com1", "abc:def", and files which differ only by case.
> > This is accomplished by munging the filenames in a manner that makes
> > them appear very strange to windows so manipulation of files in these
> > directories is REALLY not recommended.
> Hmm... This makes me think of the "umsdos" filesystem for Linux.
> I don't have the time and knowledge to look at it myself so this is just a
> "Wild Ass Idea" that I think could launch others thoughts:
> Would it be possible to use the source of the above mentioned filesystem
> for a complete cygwin managed filesystem?
> It was considered slow at the time I used it, but it did what it was
> supposed to.
Well it's a little harder than that. :-) You'd need an umsdos fhandler and some
other stuff..I think Robert Collins was once working on an umsdos fhandler.
All this talk of filesystem types makes me want to implement a shm device.
> > Unlike the 64 bit stuff which really appears to be rock solid, the
> > managed directory stuff should still be considered an "at your own
> > risk" type of thing. So while 1.5.0 will be beta quality, the managed
> > stuff will be alpha quality.
> At times I'm amazed of the mere quantity of the work you two do here...
> not to mention the quality of it.
> Out of curiosity: What do you two do for a living?
Chris is the RCM for Cygwin and Corinna is the 5* student :-)
> /Hannu E K Nevalainen, B.Sc. EE - Micro Computer Systems, 59~14'N, 17~12'E
> ~ <=> degree
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