linux-kernel - Re: [patch 7/8] fdmap v2

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Message-ID: <Pine.LNX.4.64.0706071521490.6445@alien.or.mcafeemobile.com>
Date:	Thu, 7 Jun 2007 15:22:47 -0700 (PDT)
From:	Davide Libenzi <davidel@...ilserver.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ulrich Drepper <drepper@...hat.com>,
	Ingo Molnar <mingo@...e.hu>, Eric Dumazet <dada1@...mosbay.com>
Subject: Re: [patch 7/8] fdmap v2 - implement sys_socket2

On Thu, 7 Jun 2007, Linus Torvalds wrote:

> It has the disadvantage that it would need some per-architecture setup to 
> load the actual real arguments from memory: the system call would probably 
> look something like
> 
> 	syscall_indirect(unsigned long flags, sigset_t *, 
> 			 int syscall, unsigned long args[6]);
> 
> and the rule would be that it would just load the six system call 
> registers from that "args[]" array. Always load the full six registers, to 
> make it simpler and faster, and not having any confusion or ever needing 
> any wrappers that depend on the number of system calls.

We'd still need sys_nonseqfd() though, to move/dup legacy fds into the 
non-sequential area.



- Davide


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