> i have to make a link of System.mapRTL20 to System.map to become "active"
> how can i configure my lilo.conf to linux and rtl maintains it's System.map
Attached you will find a script that I call rtl_reboot ... please read
the code and the caveats/license etc. In effect, when I want to change
from RTAI to RTL or to vanilla Linux, I reboot using:
% ./rtl_reboot linux-2.2.13
or
% ./rtl_reboot rtai-0.9
or
% ./rtl_reboot rtl-2.0
and it takes care of the symbolic links etc. This works well for me but
your mileage may vary - you'll need to arrange your directories in the
appropriate way too. Don't forget to make the script executable and,
possibly, edit the /bin/bash line at the top.
+==================================================================+
Phil Daly, NOAO/AURA, 950 N. Cherry Avenue, Tucson AZ 85719, U S A
E-mail: [EMAIL PROTECTED] V-mail: (520) 318 8438 Fax: (520) 318 8360
#!/bin/bash
#
# rtl_reboot - reboots into another system
# Copyright (C) 2000 Philip N Daly ([EMAIL PROTECTED])
#
# This software is free; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This software is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along
# with this software; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
#
# Here is my setup:
# VANILLA LINUX:
# vanilla linux source is in /usr/src/linux-2.2.13
# boot image is in /boot/vmlinuz.linux-2.2.13
# system map is in /boot/System.map.linux-2.2.13
# modules are in /lib/modules/linux-2.2.13
# RTAI v0.9:
# patched linux source is in /usr/src/rtai-0.9
# rtai source is in /opt/rtl/rtai-0.9
# boot image is in /boot/vmlinuz.rtai-0.9
# system map is in /boot/System.map.rtai-0.9
# modules are in /lib/modules/rtai-0.9
# RTL v2.0:
# patched linux source is in /usr/src/rtl-2.0
# rtai source is in /opt/rtl/rtl-2.0
# boot image is in /boot/vmlinuz.rtl-2.0
# system map is in /boot/System.map.rtl-2.0
# modules are in /lib/modules/rtl-2.0
#
# To re-boot into vanilla linux, use:
# % ./rtl_reboot linux-2.2.13
# which sets:
# /usr/src/linux -> /usr/src/linux-2.2.13
# /boot/vmlinuz -> /boot/vmlinuz.linux-2.2.13
# /boot/System.map -> /boot/System.map.linux-2.2.13
# /lib/modules/2.2.13 -> /lib/modules/linux-2.2.13
#
# To re-boot into RTAI v0.9, use:
# % ./rtl_reboot rtai-0.9
# which sets:
# /usr/src/linux -> /usr/src/rtai-0.9
# /boot/vmlinuz -> /boot/vmlinuz.rtai-0.9
# /boot/System.map -> /boot/System.map.rtai-0.9
# assuming you have set EXTRAVERSION to -RTAI09 in the Makefile
# /lib/modules/2.2.13-RTAI09 -> /lib/modules/rtai-0.9
# else
# /lib/modules/2.2.13 -> /lib/modules/rtai-0.9
#
# To re-boot into RTL v2.0, use:
# % ./rtl_reboot rtl-2.0
# which sets:
# /usr/src/linux -> /usr/src/rtl-2.0
# /boot/vmlinuz -> /boot/vmlinuz.rtl-2.0
# /boot/System.map -> /boot/System.map.rtl-2.0
# assuming you have set EXTRAVERSION to -RTL20 in the Makefile
# /lib/modules/2.2.13-RTL20 -> /lib/modules/rtl-2.0
# else
# /lib/modules/2.2.13 -> /lib/modules/rtl-2.0
#
# The minimal /etc/lilo.conf looks like this (edit as you see fit):
# boot=/dev/hda
# map=/boot/map
# install=/boot/boot.b
# prompt
# timeout=30
# default=vmlinuz
# image=/boot/vmlinuz
# label=vmlinuz
# read-only
# root=/dev/hda1
# append="mem=256m"
#
# check the source directory exists
LNXSRC=/usr/src/$1
if [ ! -e $LNXSRC ]; then
RTERROR=T
echo "Reboot error: $LNXSRC does not exist"
else
RTERROR=F
echo "Reboot: consistency check, $LNXSRC is OK"
fi
# check the compressed boot image exists
VMLINUZ=/boot/vmlinuz.$1
if [ ! -e $VMLINUZ ]; then
RTERROR=T
echo "Reboot error: $VMLINUZ does not exist"
else
RTERROR=F
echo "Reboot: consistency check, $VMLINUZ is OK"
fi
# check the system map exists
SYSMAP=/boot/System.map.$1
if [ ! -e $SYSMAP ]; then
RTERROR=T
echo "Reboot error: $SYSMAP does not exist"
else
RTERROR=F
echo "Reboot: consistency check, $SYSMAP is OK"
fi
# check the modules exist
MODDIR=/lib/modules/$1
if [ ! -e $MODDIR ]; then
RTERROR=T
echo "Reboot error: $MODDIR does not exist"
else
RTERROR=F
echo "Reboot: consistency check, $MODDIR is OK"
fi
# get the version for the required system
VERSION=`/bin/grep '^VERSION =' $LNXSRC/Makefile | /bin/awk '{print $3}'`
PATCHLEVEL=`/bin/grep '^PATCHLEVEL =' $LNXSRC/Makefile | /bin/awk '{print $3}'`
SUBLEVEL=`/bin/grep '^SUBLEVEL =' $LNXSRC/Makefile | /bin/awk '{print $3}'`
EXTRAVERSION=`/bin/grep '^EXTRAVERSION =' $LNXSRC/Makefile | /bin/awk '{print $3}'`
LNXVER=${VERSION}.${PATCHLEVEL}.${SUBLEVEL}${EXTRAVERSION}
# issue a message
echo "$LNXSRC is running Linux v$LNXVER"
# issue a message as required
if [ "$RTERROR" = "T" ]; then
echo "Reboot error detected, failsafe, aborting"
exit 0
fi
# reset the current links
/bin/rm -f /usr/src/linux
/bin/ln -sf $LNXSRC /usr/src/linux
/bin/rm -f /boot/vmlinuz
/bin/ln -sf $VMLINUZ /boot/vmlinuz
/bin/rm -f /boot/System.map
/bin/ln -sf $SYSMAP /boot/System.map
/usr/bin/find /lib/modules -type l -exec /bin/rm -f {} \;
/bin/ln -sf /lib/modules/$1 /lib/modules/$LNXVER
# reset the log files
if [ -f /var/log/messages ] ; then
/bin/rm -f /var/log/messages
/bin/touch /var/log/messages
fi
if [ -f /var/log/kernel ] ; then
/bin/rm -f /var/log/kernel
/bin/touch /var/log/kernel
fi
kill -HUP `cat /var/run/syslogd.pid`
# re-run lilo (not really necessary) and reboot as usual
/sbin/lilo
/sbin/reboot
# exit normally
exit 0
