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VK7AX > LINHAM 20.06.08 02:52l 51 Lines 1383 Bytes #999 (0) @ WW
BID : VK7AX-2006AO
Read: GUEST
Subj: Re: [PATCH] ax25.h unsigned long type for ax25 timers
Path: IZ3LSV<IK2XDE<DB0RES<WA7V<VK7AX
Sent: 080620/0056Z @:VK7AX.#ULV.TAS.AUS.OC #:47604 [Ulverstone] FBB7.00g $:VK7A
From: VK7AX@VK7AX.#ULV.TAS.AUS.OC
To : LINHAM@WW
From: Bernard Pidoux <bpidoux(AT)free.fr>
Date: Fri, 20 Jun 2008 00:38:23 +0200
To: David Miller <davem(AT)davemloft.net>
CC: ralf(AT)linux-mips.org, linux-hams(AT)vger.kernel.org,
netdev(AT)vger.kernel.org
David,
Your explanation is perfectly clear and I understand the
problem now.
Thank you very much for taking the time to explain me that.
Bernard Pidoux
David Miller wrote:
> From: Bernard Pidoux <bpidoux(AT)free.fr>
> Date: Thu, 19 Jun 2008 18:28:46 +0200
>
>> Unfortunately I don't quite understand exactly why a
>>structure in user space cannot be changed.
>
> Because there are userland binaries already compiled out
> there using the current structure layout.
> If we change the kernel, those binaries stop using a data
> structure that matches what the kernel is using.
> Such binaries will break.
>
> In generic, because of this, you can never change the
> layout of a data structure exported to userland as a
> kernel interface.
>
>
--
******************************************************************
ABOVE IS A CROSS POST TO THE PACKET RADIO NETWORK IN AN EFFORT TO
PROMOTE FURTHER INTEREST IN HAM SOFTWARE USING LINUX OPERATING
SYSTEMS AND PACKET RADIO
Courtesy Tony VK7AX VK7AX(AT)VK7AX.#ULV.TAS.AUS.OC
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