#!/bin/bash
#
# Description: universal (distro independent) generator for initial
# ramdisks for linux diskless clients
#
# Author(s): Dirk von Suchodoletz <dirk@goe.net>, 16-01-2006
# Blabla
# Blub
#
# Copyright: (c) 2003 - 2006 - RZ Universitaet Freiburg
INSTDIR=/tmp/dxs-instrd
DEBUG=1
LINRC=${INSTDIR}/init
COMETCEXCL="XF86Config*\nissue*\nmtab*\nfstab*\n"
COMDIRINDXS="/tmp/scratch /var/lib/nobody"
# distro specific settings read from configuration file
# SYSCONFDIR - system wide configuration settings in /etc - sysconfig in
# SuSE and RedHat, default in Debian and Ubuntu, conf.d in Gentoo
# DISETCEXCL - list of files, wildcards to be excluded from /etc when using
# bind mounts
# DIRINBINDMNT - lists of directories to be created in bind mounted rw
# part of the client filesystem
# RODIRSINRW - ReadOnly Directories in RW part of filesystem to save on
# TempFS usage
# DISDIRINDXS - directories in client filesystem which should be present
# anyhow
# DISBINDMNT - any code which is specific in bind mount environment
# RCDIRS - runlevel directories relative to /etc
SYSCONFDIR="<set in ~/distro-config/distro file>"
DISETCEXCL="<set in ~/distro-config/distro file>"
BINDMPTS="<set in ~/distro-config/distro file>"
DIRINBINDMNT="<set in ~/distro-config/distro file>"
RODIRSINRW="<set in ~/distro-config/distro file>"
DISDIRINDXS="<set in ~/distro-config/distro file>"
DISBINDMNT="<set in ~/distro-config/distro file>"
INITDIR="<set in ~/distro-config/distro file>"
INITBOOTD="<set in ~/distro-config/distro file>"
RCDIRS="<set in ~/distro-config/distro file>"
RCDIRSINRW="<set in ~/distro-config/distro file>"
INITSCRIPTS="<set in ~/distro-config/distro file>"
XF86CONFFILE="<set in ~/distro-config/distro file>"
XFONTPATH="<set in ~/distro-config/distro file>"
DEFAULTCOUNTRY="<set in ~/distro-config/distro file>"
#########################################################################
# End of global variable declaration, nothing needed to be changed at
# default below that line
# copy some binary to given destination. Takes binary in $1 and
# destination in $2
cobi()
{
local DEST=$2
local FPTB=`which $1`
if [ -z ${FPTB} ] ; then
return 1;
else
cp ${FPTB} ${INSTDIR}/${DEST}
fi
}
repco()
{
local SRC=$1
local DEST=$2
local HEADER=$3
# do not forget to define all variables which should be replaced within
# the start and configuration scripts
echo -e ${HEADER} >${DEST}
sed -e "s,@@@INSTDIR@@@,${INSTDIR},g" \
-e "s,@@@NWMODULES@@@,${NWMODULES},g" \
-e "s,@@@KERNVER@@@,${KERNVER},g" \
-e "s,@@@COMDIRINDXS@@@,${COMDIRINDXS},g" \
-e "s,@@@COMETCEXCL@@@,${COMETCEXCL},g" \
-e "s,@@@DISTRO@@@,${DISTRO},g" \
${SRC} >> ${DEST}
}
# Cat from stdin to linuxrc, removing leading whitespace up to pipe symbol.
# Note that here documents can only be indented with tabs, not with spaces.
cat_linuxrc() {
sed 's/^[ \t]*|//'>> ${LINRC}
echo >> ${LINRC}
}
# Resolve dynamic library dependencies. Returns a list of symbolic links
# to shared objects and shared object files for the binaries in $*.
# stolen from SuSE mkinitrd
shared_object_files() {
local LDD CHROOT initrd_libs lib_files lib_links lib link
LDD=`which ldd`
if [ ! -x $LDD ]; then
error 2 "I need execution permission on ldd ($LDD)."
fi
initrd_libs=( $(
$LDD "$@" \
| sed -ne 's:\t\(.* => \)\?\(/.*\) (0x[0-9a-f]*):\2:p'
) )
# Evil hack: On some systems we have generic as well as optimized
# libraries, but the optimized libraries may not work with all
# kernel versions (e.g., the NPTL glibc libraries don't work with
# a 2.4 kernel). Use the generic versions of the libraries in the
# initrd (and guess the name).
local n optimized
for ((n=0; $n<${#initrd_libs[@]}; n++)); do
lib=${initrd_libs[$n]}
optimized="$(echo "$lib" | sed -e 's:.*/\([^/]\+/\)[^/]\+$:\1:')"
lib=${lib/$optimized/}
if [ "${optimized:0:3}" != "lib" -a -f "$lib" ]; then
#echo "[Using $lib instead of ${initrd_libs[$n]}]" >&2
initrd_libs[$n]="${lib/$optimized/}"
fi
done
for lib in "${initrd_libs[@]}"; do
case "$lib" in
linux-gate*)
# This library is mapped into the process by the kernel
# for vsyscalls (i.e., syscalls that don't need a user/
# kernel address space transition) in 2.6 kernels.
continue ;;
/*)
lib="${lib:1}" ;;
*)
# Library could not be found.
oops 7 "Dynamic library $lib not found"
continue ;;
esac
while [ -L "/$lib" ]; do
echo $lib
link="$(readlink "/$lib")"
if [ x"${link:0:1}" == x"/" ]; then
lib=${link#/}
else
lib="${lib%/*}/$link"
fi
done
echo $lib
done \
| sort -u
}
# Resolve module dependencies and parameters. Returns a list of modules and
# their parameters.
resolve_modules() {
local kernel_version=$1 module
shift
for module in "$@"; do
local with_modprobe_conf
module=${module%.o} # strip trailing ".o" just in case.
module=${module%.ko} # strip trailing ".ko" just in case.
if [ -e /etc/modprobe.conf ]; then
with_modprobe_conf="-C /etc/modprobe.conf"
fi
module_list=$(/sbin/modprobe $with_modprobe_conf \
--set-version $kernel_version --ignore-install \
--show-depends $module 2> /dev/null \
| sed -ne 's:.*insmod /\?::p' )
if [ -z "$module_list" ]; then
oops 7 "Cannot determine dependencies of module $module." \
"Is modules.dep up to date?"
fi
echo "$module_list"
done \
| awk ' # filter duplicates: we must not reorder modules here!
NF == 0 { next }
$1 in seen { next }
{ seen[$1]=1
print
}
'
rm -f $temp
}
#########################################################################
# End of function declaration
while getopts :hgMRk:i:m:b:d:o:s:Sut:D:I:V:a: a ; do
case $a in
\:|\?) case $OPTARG in
k) echo "-k requires kernel list parameter"
;;
i) echo "-i requires initrd list parameter"
;;
m) echo "-m requires module list parameter"
;;
b) echo "-b requires boot dir parameter"
;;
d) echo "-d requires root device parameter"
;;
s) echo "-s requires image size(s)"
;;
t) echo "-t requires tmp dir parameter"
;;
D) echo "-D requires dhcp interface parameter"
;;
I) echo "-I requires network interface parameter"
;;
a) echo "-a requires a DSDT parameter"
;;
V) echo "-V requires an executable to run inside linuxrc"
;;
*) echo "Unknown option: -$OPTARG"
echo "Try mkinitrd -h"
;;
esac
exit 1
;;
g) use_glibc=1
;;
k) kernel_images=$OPTARG
;;
i) initrd_images=$OPTARG
;;
m) modules=$OPTARG
modules_set=1
;;
b) boot_dir=$OPTARG
;;
d) rootdev=$OPTARG
;;
s) splash=$OPTARG
;;
t) tmp_dir=$OPTARG
;;
D) interface=$OPTARG
interface=${interface#/dev/}
use_dhcp=1
;;
I) interface=$OPTARG
interface=${interface#/dev/}
use_ipconfig=1
;;
a) acpi_dsdt="$OPTARG"
;;
S) use_selinux=1
;;
V) vendor_init_script="$OPTARG"
;;
R) mkinit_type="rd"
;;
u) sysfs_root=1
use_udev=
;;
h) usage
;;
esac
done
shift $(expr $OPTIND - 1)
#########################################################################
# End of parameter, argument interpretation
rm -rf ${INSTDIR}
mkdir -p ${INSTDIR}/{dev,proc,tmp,mnt,root,bin,sbin,sys,lib}
mkdir -p ${INSTDIR}/usr/share
# needed for KNOPPIX hwsetup not to confuse with ${SYSCONFDIR}
mkdir -p ${INSTDIR}/etc/sysconfig
# source configuration file for the distribution used
DISTRO=suse
case "${DISTRO}.${DISVER}" in
SuSE*|suse*|Suse*|SuSe*)
DISTRO=suse-10.0
# hotplug/udev style and stuff
cp -a /etc/udev /etc/hotplug ${INSTDIR}/etc
;;
Debian*|debian*|Sarge*|sarge*)
DISTRO=debian
;;
Gentoo*|gentoo*)
DISTRO=gentoo
;;
esac
cp distro-specs/${DISTRO}/config ${INSTDIR}/etc/sysconfig
cp distro-specs/${DISTRO}/functions-${DISTRO} ${INSTDIR}/etc/distro-functions
cp -a distro-specs/${DISTRO}/files ${INSTDIR}/etc/sysconfig
#case ${DEBUG}
#if no klibc
for bbins in ash bash sh; do
if cobi ${bbins} bin ; then
LRCSH=/bin/${bbins}; ln -fs /bin/${bbins} ${INSTDIR}/bin/sh; break
else echo "Binary not found (${bbins})"; fi
done
# if no klibc
for bbins in ip ifconfig; do
if cobi ${bbins} bin
then
LRCIP=/bin/${bbins}
[ "${LRCIP}" = "ifconfig" ] && cobi route bin
break
else echo "Binary not found"; fi
done
# hwsetup and common init.d stuff from KNOPPIX, for DXS
cp -a initrd-stuff/* ${INSTDIR}
# distro dependet stuff for etc, booting !?
# needed standard binaries
for bbins in \
cat chmod chown chroot cp expr killall ln mkdir modprobe \
mount portmap pivot_root rmmod sed tar umount
do
cobi ${bbins} bin || echo "Program ${bbins} not found"
done
# one of the dhcp clients
for dhcp in dhclient dhcpcd pump ipconfig ; do
which $dhcp && break;
done
cobi $dhcp bin
mkdir -p ${INSTDIR}/var/{lib,run}
# debug binaries
for bbins in \
date ls lsmod lsof ps rm strace time
do
cobi ${bbins} bin || echo "Program ${bbins} not found"
done
# style of hotplug/udev/dev (for etc directories see above!!)
for bbins in udev udevstart
do
cobi ${bbins} bin || echo "Program ${bbins} not found"
done
# if nfs
mkdir -p ${INSTDIR}/var/lib/nfs/state
# if nbd
# cobi nbd-client bin
#if nfs - dann modul suchen, kopieren
case "${DISTRO}" in
debian*)
cp /lib/libnss_compat.so.2 ${INSTDIR}/lib;;
esac
# add needed libraries depending on choosen binaries
for lib in `shared_object_files ${INSTDIR}/bin/*` ; do
baselib=`basename ${lib}`
test -e ${INSTDIR}/lib/${baselib} || \
cp -a /${lib} ${INSTDIR}/lib
done
# add kernel modules and dependency files
KERNVER=2.6.13-15.7-default
#KERNVER=2.6.12-10-386
NWMODULES="e100 tg3 via-rhine"
FSMODULES="nbd nfs"
for module in `resolve_modules ${KERNVER} af_packet ${NWMODULES} ${FSMODULES}`; do
mpath=${INSTDIR}/${module%/*}
mkdir -p ${mpath}
cp /$module ${mpath}
done
cp /lib/modules/${KERNVER}/modules.* ${INSTDIR}/lib/modules/${KERNVER}
DESC="#!${LRCSH}\n# Description: universal (distro independent) initial \
ramdisk for\n#\t\tlinux diskless clients.\n\t\t#variable replacement done \
by $0\n#\n# Author(s): Dirk von Suchodoletz <dirk@goe.net>, 13-12-2005\n\
#\t\tN.N.\n#\t\tN.N.\n# Copyright: (c) 2003, 2006 - RZ Universitaet \
Freiburg\n"
repco initrd-stuff/init ${INSTDIR}/init ${DESC}
chmod 755 ${INSTDIR}/init ${INSTDIR}/bin/servconfig \
${INSTDIR}/bin/hwautocfg ${INSTDIR}/bin/dhcpmkconfig
DESC="# Description: universal (distro independent) fcuntion definition\n\
# Author(s): Dirk von Suchodoletz <dirk@goe.net>, 07-01-2006\n\
#\t\tN.N.\n#\t\tN.N.\n# Copyright: (c) 2006 - RZ Universitaet \
Freiburg\n"
repco initrd-stuff/etc/functions ${INSTDIR}/etc/functions ${DESC}
#########################################################################
# End of file copy procedures
# finally create the compressed initial ramdisk cpio archive
pushd . > /dev/null 2>&1
cd ${INSTDIR}
find . ! -name "*~" | cpio -H newc --create | gzip -9 > /tmp/dxsinitrd.gz
popd > /dev/null 2>&1
