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Re: should gpio be moved to sys/dev from sys/sys?
Am 17.08.2009 um 18:58 schrieb Matt Thomas:
On Aug 17, 2009, at 9:49 AM, Thor Lancelot Simon wrote:
On Mon, Aug 17, 2009 at 06:45:56PM +0200, Marc Balmer wrote:
- device specific C header files should go to /usr/include/dev (thus
sys/dev in the src tree)
- system C header files (kernel data structures) should go to /usr/
include/sys (thus sys/sys in the src tree)
I agree with this -- except that I think few if any device specific
C header files should be exposed to userland at all.
A device which must exports things to userland (ioctls, defines)
do so from a file which contain those parts only. Only this file
may be placed
under /usr/include. The driver should include said file to get
access to those bits.
This is just following the simple rules of separating interface from
Having said that, given <sys/gpio.h> is already in netbsd 5, it's
too late to move.
Actually I think sys/gpio.h is at the right place, but dev/keylock.h
is not. dev/keylock.h should actually be split into two files, one
containing the internal parts, dev/keylock.h, and one containing the
public parts in sys/keylock.h
Until now the public parts are only a few #defines, but that might
change. So we should define the proper place before it makes release.
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