Le samedi 08 décembre 2012 à 16:40 +0000, Peter Maydell a écrit : > On 8 December 2012 15:18, Laurent Vivier <laur...@vivier.eu> wrote: > > Signed-off-by: Laurent Vivier <laur...@vivier.eu> > > This kind of patch really needs an explanation (and ideally > test case) of what the bug is that it is attempting to fix...
Yes... of course, but sometime no one reads my patches, so I was
lazy ;-)
The 3 first patches I sent today allow to run netstat and route in a
linux container with qemu linux-user (qemu-m68k in my case).
The first one, obviously, allows to have IP addresses in correct order
in the case of "netstat -nr".
The second one, allows to use the command "route". This is a follow up
of patch:
commit c2e3dee6e03527baf8698698cce76b1a3174969a
Author: Laurent Vivier <laur...@vivier.eu>
Date: Sun Feb 13 23:37:34 2011 +0100
linux-user: Define target alignment size
In my case m68k aligns "int" on 2 not 4. You can check this with the
following program:
#include <stdio.h>
#include <net/route.h>
#include <stddef.h>
int main(void)
{
struct rtentry rt;
printf("rt_pad1 %ld %zd\n", offsetof(struct rtentry, rt_pad1),
sizeof(rt.rt_pad1));
printf("rt_dst %ld %zd\n", offsetof(struct rtentry, rt_dst),
sizeof(rt.rt_dst));
printf("rt_gateway %ld %zd\n", offsetof(struct rtentry, rt_gateway),
sizeof(rt.rt_gateway));
printf("rt_genmask %ld %zd\n", offsetof(struct rtentry, rt_genmask),
sizeof(rt.rt_genmask));
printf("rt_flags %ld %zd\n", offsetof(struct rtentry, rt_flags),
sizeof(rt.rt_flags));
printf("rt_pad2 %ld %zd\n", offsetof(struct rtentry, rt_pad2),
sizeof(rt.rt_pad2));
printf("rt_pad3 %ld %zd\n", offsetof(struct rtentry, rt_pad3),
sizeof(rt.rt_pad3));
printf("rt_pad4 %ld %zd\n", offsetof(struct rtentry, rt_pad4),
sizeof(rt.rt_pad4));
printf("rt_metric %ld %zd\n", offsetof(struct rtentry, rt_metric),
sizeof(rt.rt_metric));
printf("rt_dev %ld %zd\n", offsetof(struct rtentry, rt_dev),
sizeof(rt.rt_dev));
}
On x86_64:
rt_pad1 0 8
rt_dst 8 16
rt_gateway 24 16
rt_genmask 40 16
rt_flags 56 2
rt_pad2 58 2
rt_pad3 64 8
rt_pad4 74 6
rt_metric 80 2
rt_dev 88 8
on m68k:
rt_pad1 0 4
rt_dst 4 16
rt_gateway 20 16
rt_genmask 36 16
rt_flags 52 2
rt_pad2 54 2
rt_pad3 56 4
rt_pad4 62 2
rt_metric 64 2
rt_dev 66 4
The third one, allows to set the interface for the command "route", for
instance : route add -net default gw 10.0.3.1 eth0
Obviously, If patches seem correct for everyone, I can resend them with
comments and in a serie.
Bonus: To test this, find attached a little script that will compile
qemu-m68k, install debian etch-m68k in a linux container. Then you will
be able to run debian m68k system with "sudo lxc-start -n virtm68k".
(tested on an ubuntu 12.10, you should check that lxc creates a lxcbr0
bridge with IP address 10.0.3.1). Check variable at the beginning for
the paths used.
Regards,
Laurent
--
"Just play. Have fun. Enjoy the game."
create-m68k-lxc.sh
Description: application/shellscript
