Re: Fwd: Re: lib/50276: [PATCH] Portability fixes for ossaudio.c

[Samuel Thibault <samuel.thibault%gnu.org@localhost>]

The following reply was made to PR lib/50276; it has been noted by GNATS.

From: Samuel Thibault <samuel.thibault%gnu.org@localhost>
To: Robert Millan <rmh%gnu.org@localhost>
Cc: Antti Kantee <pooka%iki.fi@localhost>, rumpkernel-users%freelists.org@localhost,
	gnats-bugs%NetBSD.org@localhost, Bug hurd mailing list <bug-hurd%gnu.org@localhost>
Subject: Re: Fwd: Re: lib/50276: [PATCH] Portability fixes for ossaudio.c
Date: Thu, 24 Sep 2015 20:18:37 +0200

 Hello,
 
 Robert Millan, le Thu 24 Sep 2015 20:09:27 +0200, a écrit :
 > >Why isn't adding the missing defines to the Hurd soundcard.h possible?
 > 
 > Not just possible but also desirable IMHO.
 
 It may still be impossible at the moment actually.  The
 SNDCTL_DSP_MAPINBUF and SNDCTL_DSP_MAPOUTBUF ioctls are precisely
 examples: they pass a struct which contains the address of a buffer.
 This can not be expressed with the current handling of ioctls in
 GNU/Hurd: the sound server can't read/write the client process memory.
 
 Samuel