lkml.org 
[lkml]   [2000]   [Sep]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] change ifmap.base_addr to u_long type
"David S. Miller" wrote:
>
> Date: Thu, 07 Sep 2000 14:36:02 -0700
> From: Jun Sun <jsun@mvista.com>
>
> Here is a small patch which is needed on non-i386 platforms.
>
> The layout of this structure is exported to userspace
> applications, thus you cannot simply just change the
> type in this structure to get the change you need.
>
> This change thus cannot be made as-is.
>
> You must find some other way, let me give you one example
> of a potentially acceptable solution:
>
> 1) Add new member to union inside of ifreq where ifmap
> currently lives. Add new member, perhaps called ifmap2
> which uses more appropriate types for base_addr member.
>
> 2) Add new ifreq call which looks at ifmap2 instead of ifmap.
>
> This way, existing userland applications still work as they
> did before hand, and new ones can be written to use the ifmap2
> version of the interface.
>
> Also be sure that the glibc maintainers get this change once it
> is in the kernel.
>
> Later,
> David S. Miller
> davem@redhat.com

Hmm, that is a whole lot more complicated than I thought.

Do we know exactly what userland apps/libs use ifmap? Maybe the damage
is not so bad, so that we can fix this problem without making it look
worse.

Jun
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:38    [W:0.042 / U:2.604 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site