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Subject: Re: Again:syscall from modules
From: Terje Eggestad <terje.eggestad@scali.com>
To: Amber Palekar <amber_palekar@yahoo.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>,
        kernel list <linux-kernel@vger.kernel.org>
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Date: 27 Dec 2001 16:54:25 +0100
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Yes, the sys_* funcs are declared asmlinkage int sys_*. 
where the asmlinkage differ from platform to platform. 
It's used to tell the compiler if a non standared calling 
convertion is used, typically if params are passed by registers
instead of stack. The asmlinkage define must be sett according to the
syscall dispatcher (entry.S on ia32), and may be changed accordingly. 

In short, if you want to use sys_* you must understand the interaction
between the sys_* funcs and the dispatcher on *every* platform, and
the interaction may change without notice.

In short short, don't don't don't don't use the sys_* functions.

TJ

On Tue, 2001-12-25 at 14:14, Amber Palekar wrote:
> 
>  Hi,
>  
> > Just use sock_sendmsg() and sock_recvmsg() directly.
> > They are both
> > exported in netsyms.c.
>   Is there any specific reason behind not exporting
> sys_sendto and sys_recvfrom ??
> 
> > Cheers,
> >   Trond
> 
> TIA
> Amber
> 
> 
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