linux-kernel - [PATCH 4/6] syslets: add indirect args

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Date:	Thu,  6 Dec 2007 15:20:17 -0800
From:	Zach Brown <zach.brown@...cle.com>
To:	linux-kernel@...r.kernel.org
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Ulrich Drepper <drepper@...hat.com>,
	Arjan van de Ven <arjan@...radead.org>,
	Andrew Morton <akpm@....com.au>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Evgeniy Polyakov <johnpol@....mipt.ru>,
	"David S. Miller" <davem@...emloft.net>,
	Suparna Bhattacharya <suparna@...ibm.com>,
	Davide Libenzi <davidel@...ilserver.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Dan Williams <dan.j.williams@...il.com>,
	Jeff Moyer <jmoyer@...hat.com>,
	Simon Holm Thogersen <odie@...aau.dk>,
	suresh.b.siddha@...el.com
Subject: [PATCH 4/6] syslets: add indirect args

This adds the syslet indirect args to the indirect_params union.

This is broken, but it lets us simply demonstrate the rest of the syslet
universe around the indirect argument passing convention.

A caller could well want to perform a syscall that uses indirect arguments as a
syscall.  Maybe we turn indirect_params into a struct that contains a union for
arguments which can never be used concurrently.  This needs wider discussion.

Signed-off-by: Zach Brown <zach.brown@...cle.com>

diff --git a/include/linux/indirect.h b/include/linux/indirect.h
index 97f9ac4..5d5abd7 100644
--- a/include/linux/indirect.h
+++ b/include/linux/indirect.h
@@ -3,6 +3,7 @@
 #define _LINUX_INDIRECT_H
 
 #include <asm/indirect.h>
+#include <linux/syslet-abi.h>
 
 
 /* IMPORTANT:
@@ -14,6 +15,7 @@ union indirect_params {
   struct {
     int flags;
   } file_flags;
+  struct syslet_args syslet;
 };
 
 #define INDIRECT_PARAM(set, name) current->indirect_params.set.name
-- 
1.5.2.2

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