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From: Yoav Artzi <yoavar@checkpoint.com>
To: linux-kernel@vger.kernel.org
Subject: Sending IOCTLs from 32-bit userland to 64-bit Kernel module
Date: Tue, 29 Jan 2008 15:08:19 +0200	[thread overview]
Message-ID: <479F2543.40705@checkpoint.com> (raw)

Hi,


I have a 32-bit user land application which sends an IOCTL to a 64-bit 
Kernel module. I have a few different cmd codes that I can send through 
the IOCTL. For some reason I seem to always get the same IOCTL cmd from 
user land, no matter what the ioctl() call is given. This cmd code that 
I get has some bytes (W/R and the module code) that are OK, but the rest 
is just garbage or zeros. This was originally a 32-bit system, and we 
are no converting the Kernel module to 64-bit, so maybe there's 
something special for 32-64 communication that miss.


I am working on Linux Kernel v2.6.18.


Thanks



             reply	other threads:[~2008-01-29 13:08 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-29 13:08 Yoav Artzi [this message]
  -- strict thread matches above, loose matches on Subject: below --
2008-01-29 13:18 Sending IOCTLs from 32-bit userland to 64-bit Kernel module Yoav Artzi
2008-01-29 15:29 ` Jiri Slaby
2008-01-29 12:13 Yoav Artzi
2008-01-29 13:05 ` Michael Tokarev
2008-01-29 13:23   ` Jiri Slaby
2008-01-29 13:23 ` Matti Aarnio

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