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VK7AX > LINHAM 20.06.08 02:52l 36 Lines 1167 Bytes #999 (0) @ WW
BID : VK7AX-2006TA
Read: GUEST
Subj: Re: [PATCH] ax25.h unsigned long type for ax25 timers
Path: IZ3LSV<I0TVL<DK0WUE<SP7MGD<VK7AX
Sent: 080620/0056Z @:VK7AX.#ULV.TAS.AUS.OC #:47603 [Ulverstone] FBB7.00g $:VK7A
From: VK7AX@VK7AX.#ULV.TAS.AUS.OC
To : LINHAM@WW
From: David Miller <davem(AT)davemloft.net>
Date: Thu, 19 Jun 2008 14:46:21 -0700 (PDT)
To: bpidoux(AT)free.fr
CC: ralf(AT)linux-mips.org, linux-hams(AT)vger.kernel.org,
netdev(AT)vger.kernel.org
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 datastructure 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.
--
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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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