Re: LANANA: To Pending Device Number Registrants

[Alexander Viro]

On Tue, 15 May 2001, Linus Torvalds wrote:

> What is the horrible app that does something like this? 

eject(1), for one thing. And yes, it's ugly beyond belief - don't read
without a barfbag. BTW, LILO is not better, to put it _very_ mildly.

> >     /* Use scsi if possible [scsi, ide-scsi, usb-scsi, ...] */
> >     if(HAS_FEATURE_SET(fd, "scsi-tape"))
> >             ...
> >     else if(HAS_FEATURE_SET(fd, "floppy-tape"))
> >             ..
> 
> doesn't look horrible, and I don't see why we couldn't expose the "driver
> name" for any file descriptor. We already do for some: "fstatfs()" is
> largely the same thing on another level.

Well, yes, if you can extract fs type from fstatfs() output. I don't
think that ->s_magic (i.e. ->f_type) is a good way to do that, though.
We have unused space in struct statfs and IMO putting the name there
is a good idea. Has an additional nice property of killing the crap
like switch by magic numbers.

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