Hi, On Thu, Sep 24, 2015 at 08:18:37PM +0200, Samuel Thibault wrote:
> 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. AIUI, it is possible by adding explicit stubs for these specific ioctls to our glibc. I think this is used both for ioctls with too many parameters to encode them with the standard RPC ID mapping scheme, and for ioctls with "problematic" parameters like these? -antrik-
