H. Peter Anvin writes:
> Followup to: <200002162304.KAA05769@mobilix.atnf.CSIRO.AU>
> By author: Richard Gooch <rgooch@ras.ucalgary.ca>
> In newsgroup: linux.dev.kernel
> >
> > > c) whether kernel has update support or not is determined by whether
> > > the minor=184 is accessible (perhaps by loading a driver) or not.
> > > /proc does not make things much easier.
> >
> > It's much friendlier to the sysadmin or script writer to list the
> > directory or test for the file than to do a speculative open. I don't
> > know of a standard programme (say part of shell utils) that does this.
>
> Isn't that how devfs expects to do module autoloading?
Nope. Autoloading is done when you lookup a non-existent inode. So:
if [ -e /dev/cpu/microcode ]; then blah...; fi
will work.
Regards,
Richard....
Permanent: rgooch@atnf.csiro.au
Current: rgooch@ras.ucalgary.ca
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