> do you really need a "magic" file for this ? I don't know how
> well sysfs supports mkdir/rmdir (if at all), but they would
> seem to provide a much more natural interface. (VFS allows
> rmdir to remove non-empty directories, so you wouldn't have
> to rm -r.)
a) sysfs doesn't allow mkdir/rmdir and thus avoids an imperial buttload
of races - witness the crap in devfs.
b) rmdir of non-empty directory pretty much guarantees another buttload of
races.
c) mkdir creating non-empty directory or rmdir removing non-empty directory
is *ugly*. BTW, Roman's "filesystem" for modules in its current form is
vetoed, as far as I'm concerned - this sort of magic is just plain wrong.
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