Re: [rtl] open/read/write in kernel space

[Lothar Krause <loti@gmx.at>]

Hi Erwin,

Gee okay, the sys_read() and sys_write() calls are rather short functions.
So I could both workaround changing ksyms.c and integrate the neccessary 
segment descriptors manipulations. Is this playing around like complicated or 
so? If this more than a 4 liner?

> I am currently working on a POSIX like aio module for RTAI. The
> module uses a number of kernel threads (basicly non realtime user
> programms
> running in kernel space) to do the IO via the sys_* functions.
> The communication between realtime and non realtime is based on LXRT
> (and with that not available for RT-linux but only for RTAI).

Otherwise I just rechecked the rtf_create() man page and didn't noticed the 
O_NONBLOCK implied warning and nothing about buffer overflows.  It this novel 
in v3? That means basically I can just cat my data to a real time fifo and 
read it without synchronization problems? 

Throw them to the lions.

lo