Re: [rtl] Distinguishing RT-Linux from Linux

[thomas.fruehbeck@aut.alcatel.at (Thomas Fruehbeck)]

I did something similar, and used the following patch:

in include/linux/uts.h modify the UTS_SYSNAME to an appropriate one:

/*
 * Defines for what uname() should return 
 */
#ifndef UTS_SYSNAME
#define UTS_SYSNAME "Linux"
#endif

Anyway, wouldn't it be nice to introduce the idea of Paul into the new patches?

perhaps something like:

#define UTS_SYSNAME "Linux (RT)"

as not to corrupt scripts which rely on the good old "Linux", if not knowing, that
the string is continued after the 'space'?

Thomas




> From mikem@rtlinux.cs.nmt.edu Thu Sep 17 05:12 MET 1998
> Date: Thu, 17 Sep 1998 04:59:23 +0200
> From: Paul Serice <ugs@laci.net>
> MIME-Version: 1.0
> To: rt-linux Mailing List <rtl@rtlinux.cs.nmt.edu>
> Subject: [rtl] Distinguishing RT-Linux from Linux
> Content-Transfer-Encoding: 7bit
> 
> At boot, I like to create a symbolic link for "/usr/src/linux" depending
> on which kernel I'm using.  Heretofore, I've just used "uname -r" to
> distinguish among different kernels.  Unfortunately, this method is
> ambiguous when I have RT-Linux on the system as "2.0.35" could be either
> the production Linux kernel or the RT-Linux kernel.
> 
> I think I've exhausted all the uname options, but I haven't found one
> that nets anything different when compared with the standard kernel's
> output for the same command.
> 
> Is there something better than the following:
> 
>        if /sbin/ksyms -a | grep " rt_" > /dev/null
>        then
>           SOURCE=rt-linux-`uname -r`
>        else
>           SOURCE=linux-`uname -r`
>        fi
> 
> 
> Thanks
> Paul Serice
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