|
|
# functions common for all distros
. /etc/functions || ( echo -e "The functions file contains a lot of script \
functionality. Without this\ninit script will not run." && exit 1 )
# configuration settings (several file and directory variables)
. /etc/sysconfig/config || error " The distribution \
specific configuration file could not be found"
date
export PATH=/bin:/sbin:/usr/bin/:/usr/sbin
export date="17-01-2006"
exec < /dev/console > /dev/console 2>&1
export KERNEL="@@@KERNVER@@@"
export NWMODULES="@@@NWMODULES@@@"
export DISTRO="@@@DISTRO@@@"
DEVDIR="/dev"
mount -n -t tmpfs -o 'size=25%,mode=0755' initramfsdevs ${DEVDIR}
mkdir -p ${DEVDIR}/pts
mkdir -p ${DEVDIR}/shm
mkdir -p ${DEVDIR}/.udevdb
[ ! -f /proc/cpuinfo ] && mount -n -t proc proc /proc
echo 256 > /proc/sys/kernel/real-root-dev
[ ! -d /sys/class ] && mount -n -t sysfs sysfs /sys
# start device auto discovery (just the first case is tested yet)
if [ -x /bin/udev -a -x /bin/udevstart ] ; then
# if [ -x /bin/hotplug.sh ]; then
# echo "/bin/hotplug.sh" > /proc/sys/kernel/hotplug
# testmkd /events
# else
echo "/bin/udev" > /proc/sys/kernel/hotplug
# fi
/bin/udevstart
elif [ -x /bin/hotplug ] ; then
echo "Enabling hotplug"
echo "/bin/hotplug" > /proc/sys/kernel/hotplug
elif [ -s /dev.tgz ] ; then
echo "Using traditional static /dev entries"
tar -xpzf /dev.tgz -C / &
fi
# read kernel commandline
TMPFSSIZE="50%"
export DEBUGLEVEL=0
echo "noldap" > /tmp/ldap-done
echo "nodhcp" > /tmp/dhcp-done
read KCMDLINE < /proc/cmdline
export KCMDLINE
for opts in ${KCMDLINE} ; do
case ${opts} in
# localization
country=*)
COUNTRY=${opts#country=}
echo -e "\n# localization information gotten via kernel command line \
in $0\ncountry=\"${COUNTRY}\"" >> /etc/machine-setup
;;
# single token for debugging
debug)
DEBUGLEVEL=1;;
# debug level
debug=*)
DEBUGLEVEL=${opts#debug=};;
# if configuration should be gathered by dhcp client
dhcp)
DHCP="yes"
rm /tmp/dhcp-done;;
# if ldap configuration should be triggered
ldap)
LDAP="yes"
rm /tmp/ldap-done;;
# ldap configuration with host and port to contact (base)
ldap*)
LDAP="yes"
rm /tmp/ldap-done;;
# if ld.so.cache should not be generated
noldsc)
NOLDSC=yes;;
# if unionfs should be used
unionfs*)
UNIONFS=1;;
# dnbd server:port
dnbdroot=*)
DNBDOPT=${opts#dnbdroot=};;
# nbd server:port,filesystem (filesystem is optional)
nbdroot=*)
NBDOPT=${opts#nbdroot=};;
# ip configuration client-ip:server-ip:gateway:netmask
ip=*)
IPINFO=${opts#ip=};;
# nfs server and path
nfsroot=*)
NFSROOT=${opts#nfsroot=}
echo -e "\n# nfs root information gotten via kernel command line in $0\nnfsroot=\"${NFSROOT}\"\n" >> /etc/machine-setup
;;
# size of tempfs if not max. 50% of RAM should be used
tmpfssize=*)
TMPFSSIZE=${opts#tmpfssize=};;
# vendor code identifier for dhcp requests
vci=*|VCI=*)
VCI=${opts#VCI=};;
esac
done
# check if at least one type of IP configuration is availabe
if [ -z "$DHCP" -a -z "$LDAP" -a -z "$IPINFO" ] ; then
if strinfile "clientip" /etc/machine-setup ; then
# IP configuration seems to be present in machine-setup file
. /etc/machine-setup
IPINFO="ip=$clientip:$serverip:$gateway:$subnet_mask"
else
error " Unable to setup at \
least basic functionality, because no IP configuration\n available. You \
might pass that information via kernel command line\n through setting of \
'ipappend 1' in pxelinux.cfg/* or just enable dhcp\n or ldap. They are \
enabled via tokens ('ldap' or 'dhcp') in kernel\n command line."
fi
fi
# for ldap configuration at least basic IP setup is needed to contact the
# server
[ -z "$DHCP" -a -n "$LDAP" -a -z "$IPINFO" ] && error " Unable to setup at \
least basic functionality, because no IP configuration\n available. Please \
beware - ldap works only in combination of either\n ipappend or similar or \
with dhcp!"
# set debug level and logfile
echo "Setting debuglevel to ${DEBUGLEVEL}"
export MODPRV=" "
export LOGFILE
if [ "${DEBUGLEVEL}" -gt 0 ] ; then
# if LOGFILE should be used within initial ramdisk add '/mnt' in fron
# of the variable
LOGFILE="/var/log/dxs-boot.log"
[ "${DEBUGLEVEL}" -gt 2 ] && {
set -x
# modprobe should be verbose
MODPRV="-v"; }
else
# switch off most of kernel debug output
echo "0 0 0 0" >/proc/sys/kernel/printk
# modprobe should stay quiet
MODPRV="-q"
LOGFILE="/dev/null"
fi
# load network adaptor modules
modprobe ${MODPRV} -a ${NWMODULES} || error " Failed to load the network \
adaptor modules defined via mkdxsinitrd\n run. Please rerun and list the \
appropriate modules (without .ko)."
# set up loopback networking (ipsetup - function defined in /etc/functions)
ipsetup 127.0.0.1 255.0.0.0 0.0.0.0 127.255.255.255 lo
# analyze ip information from the kernel command line and put parts
# of it into several variables
if [ -n "$IPINFO" ] ; then
IP=`echo $IPINFO|sed -e "s,:.*,,"`
SERVER=`echo $IPINFO|sed -e "s;[0-9\.]\{3,\}:;;" -e "s,:.*,,"`
GW=`echo $IPINFO|sed -e "s;[0-9\.]\{3,\}:[0-9\.]\{3,\}:;;" -e "s,:.*,,"`
# remove last colon after netmask if it was left there ...
IPINFO=`echo $IPINFO|sed -e "s,:$,,"`
NM=`echo $IPINFO|sed -e "s,.*:,,"`
echo -e "# ip configuration written by $0 script\nclientip=$IP\n\
sub_netmask=$NM\ngateway=$GW\nserverip=$SERVER" \
>>/etc/machine-setup
# set static ip address via function ipsetup
ipsetup $IP $NM $GW 255.255.255.255 eth0
else
noipyet="yes"
fi
# get configuration data via dhcp (with vendor code identifier if present in
# ${VCI} or ldap if available (in background)
echo "dhcp:!:13117:0:99999:7:::" > /etc/passwd
echo "dhcp:x:101:" > /etc/group
[ -n "$DHCP" ] && rundhcp ${VCI} &
if [ -n "$noipyet" ] ; then
waitfor /tmp/dhcp-done 20000
. /etc/machine-setup
ipsetup $clientip $subnet_mask $gateway $broadcast_address eth0
fi
[ -n "$LDAP" ] && ldapconf &
# if root filesystem should be imported via traditional network block device
if [ -n "${NBDOPT}" ] ; then
modprobe ${MODPRV} nbd || error " Failed to load module nbd.ko. It is \
needed if you intend to use\n network block device (NBD) for the client \
as root filesystem."
nbdhost=${NBDOPT%:*}
nbdopt=${NBDOPT#*:}
nbdport=${NBDOPT%,*}
nbdfs=${NBDOPT#*,}
echo "Diskless client using nbd server $nbdhost:$nbdport,$nbdfs"
nbd-client $nbdhost $nbdport /dev/nbd0
if [ -z "$nbdfs" ]; then
RFST=ext2;
else
RFST=$nbdfs;
modprobe ${MODPRV} ${RFST}
fi
fi
# if root filesystem should be imported via udp based distributed network
# block device
if [ -n "${DNBDOPT}" ] ; then
modprobe ${MODPRV} dnbd || echo "failed to load dnbd!"
fi
# if no type of root filesystem is passed via kernel command line try
# information gathered from dhcp process
if [ -z "${DNBDOPT}" -a -z "${NBDOPT}" -a -z "${NFSROOT}" ] ; then
# information has to be read from dhcp configuration
if [ -z "$noipyet" ] ; then
waitfor /tmp/dhcp-done 20000
fi
waitfor /tmp/ldap-done 20000
. /etc/machine-setup
NFSROOT=${serverip}:${root_path}
fi
# call function for nfs mounts
if [ -z "${DNBDOPT}" -a -z "${NBDOPT}" ] ; then
nfsmnt ${NFSROOT} ${MODPRV}
fi
# get the complete collection of kernel modules available
mount -n --bind /mnt/lib/modules/${KERNEL} /lib/modules/${KERNEL} || \
error " The requested modules directory does not exist. That could mean:\n\
* The kernel was updated but mkdxsinitrd was not run afterwards.\n\
* The mounted filesystem does not contain the modules directory at all.\n\
You might want to check the list of mounted filesystems and if /mnt is\n\
not empty run 'ls /mnt/lib/modules' to check."
# You might want to check the list of mounted filesystems and if /mnt is\n\
# not empty run 'ls /mnt/lib/modules' to check."
# start hardware configuration as background process
hwautocfg &
# try to use unionfs for rw access if available
RWDIR=/dev/shm
if [ -n "${UNIONFS}" ] ; then
modprobe ${MODPRV} unionfs || {
error " Loading of UnionFS failed - Either module is not present or \
module\n does not match the running kernel. If you do not want to see this \
\n message remove the token 'unionfs' from kernel command line." nonfatal
UNIONFS=""; }
fi
if [ -n "${UNIONFS}" ] ; then
echo -n "Using UnionFS for rw access"
mkdir -p ${RWDIR}/union ${RWDIR}/uniontmp
mount -n -t tmpfs none ${RWDIR}/uniontmp
mount -n --move /mnt /root
mount -n -t unionfs -o dirs=${RWDIR}/uniontmp=rw:/root=ro none /mnt
mkdir -p /mnt/uniontmp
mount -n --move ${RWDIR}/uniontmp /mnt/uniontmp
[ -z "${NOLDSC}" ] && ldconfig /etc/ld.so.cache &
else
echo -n "Using bind mounts to ramdisk for rw access"
mount -n -t tmpfs -o size=${TMPFSSIZE} ramfs ${RWDIR}
for path in ${D_BINDMPTS} ; do
mkdir -p ${RWDIR}/${path} >/dev/null 2>&1
mount -n --bind ${RWDIR}/${path} /mnt/${path}
done
[ -z "${NOLDSC}" ] && ldconfig /tmp/ld.so.cache &
for path in ${D_RODIRSINRW}; do
if [ -d /mnt/${path} ] ; then
LIST=${path}" "$LIST
# exclude them from etc copy process too
echo ${path}|sed -e "s,/root/,," >>/tmp/etc.exclude
mkdir -p /root/${path} >/dev/null 2>&1
#[ ${DEBUGLEVEL} -gt 0 ] && | #echo " ${path} (without /root path component)" >>$LOGFILE
mount -n --bind /mnt/${path} /root/${path} >/dev/null 2>&1
fi
done
for path in /etc/${D_SYSCONFDIR} ${D_DIRINBINDMNT} ${LIST}; do
mkdir -p ${RWDIR}/${path}
done
testmkd ${RWDIR}/var/tmp
chmod a+rwxt ${RWDIR}/var/tmp >/dev/null 2>&1
echo -e "${D_ETCEXCL} @@@COMETCEXCL@@@" >>/tmp/etc.exclude
# if ld.so.cache is to be generated then do not copy the file
[ -z "${NOLDSC}" ] && echo -e "ld.so.cache*" >>/tmp/etc.exclude
# for tar exclude lists might be used, more difficult for cp
cd /mnt
tar -X /tmp/etc.exclude -cp etc/* | \
tar -xp -C ${RWDIR}>/dev/null ;
cd /
mount -n --bind ${RWDIR}/etc /mnt/etc
mount -n --bind ${RWDIR}/var /mnt/var
# get the "covered" mounts back into filesystem structure
for i in ${LIST}; do
#rm -rf /* >/dev/null 2>&1
mount -n --move /root/$i /mnt/$i #>>$LOGFILE 2>&1
done
rm -rf /root/* >/dev/null 2>&1
# run some specific stuff !?
fi
# script for stuff to execute during early bootup
echo -e "#!/bin/sh\n# skeleton written from $0" >/mnt/etc/${D_INITDIR}/boot.ld
echo "fs complete" >/tmp/fscmpl
# write debug file information after filesystem setup completed
echo -e "# /etc${D_SYSCONFDIR}/logfile - file created by $0\n#\n# logfile for linux diskless client specific debugging output\nLOGFILE=\"$LOGFILE\"\n#\n# debug level\nDEBUGLEVEL=\"$DEBUGLEVEL\"" > /mnt/etc/${D_SYSCONFDIR}/logfile || \
error "Unable to create the logfile configuration in /etc/${D_SYSCONFDIR}. \
That\n might indicate some severe error."
# run distribution independent and dependent configuration of files and
# services
servconfig &
for path in @@@COMDIRINDXS@@@ ${D_DIRINDXS} ${D_DIRINBINDMNT} ; do
testmkd /mnt/${path}
done
for i in /var/run/utmp /var/log/wtmp /var/log/lastlog /etc/mtab ; do
echo -n > /mnt$i
done
chmod a+rwxt /mnt/tmp /mnt/tmp/scratch 2>/dev/null &
chown 65534:0 /mnt/var/lib/nobody &
echo -e "# /etc/fstab - file generated by\n#\t$0:\n#\tDirk von \
Suchodoletz, dirk@goe.net\n\nrootfs\t\t/\t\trootfs\t\tro\t\t 0 0\n\
proc\t\t/proc\t\tproc\t\tdefaults\t 0 0\ninitramdevs\t/dev\t\ttmpfs\
\t\trw\t\t 0 0\ndevpts\t\t/dev/pts\tdevpts\t\tmode=0620,gid=5\t 0 0\n\
usbfs\t\t/proc/bus/usb\tusbfs\t\tnoauto\t\t 0 0">/mnt/etc/fstab || \
error "Failed to create /etc/fstab in the clients root filesystem. The\n\
noexistence of the file might produce some unexpected behaviour of\n\
mount commands."
date
# copy library cache if generated
if [ -z "${NOLDSC}" ] ; then
if waitfor /tmp/ldcfg 50000 ; then
test -s /mnt/tmp/ld.so.cache && {
cp /mnt/tmp/ld.so.cache /mnt/etc/ld.so.cache
rm /mnt/tmp/ld.so.cache; }
else
error " For some reason the generation of \
ld.so.cache did not finish in time."
fi
else
[ "${DEBUGLEVEL}" -gt 0 ] && echo -e "You decided not to recreate \
/etc/ld.so.cache file. That might cause errors\nif libraries are installed \
after this file was created on server." >> /mnt/${LOGFILE}
fi
# save machine configuration
cp /etc/machine-setup /mnt/etc
waitfor /tmp/hwcfg 20000 || error " For some reason the hardware autoconfig \
of this client did not finish in\n time. You might check the process list \
and list the modules loaded until\n now."
waitfor /tmp/svcfg 20000 || error " For some reason the software config \
of this client did not finish in\n time. You might check the process list \
and list the modules loaded until\n now."
date
bash
# IP configuration is made and should not be updated automatically
killall -9 dhcpcd dhclient pump 2>/dev/null
# unmount the bind mounted modules directory
umount -n /lib/modules/${KERNEL} || error "Unmount of the kernel \
modules directory failed for some reason."
# reset hotplug
echo "/sbin/hotplug" > /proc/sys/kernel/hotplug
echo ""
test -f /mnt/etc/inittab || error " The file /etc/inittab does not exist or \
is no regular one. It is needed\n for the bootup procedure to follow."
umount -n /sys || error " Unmount of the kernel sys directory \
failed for some\nreason. You will get some error messages that some files \
could not be\n removed." nonfatal
umount -n /proc/bus/usb >/dev/null 2>&1
mount -n --move /dev /mnt/dev
cd /mnt
umount -n /proc
[ -n "${UNIONFS}" ] && mount -n --move /root /mnt/mnt
pivot_root . mnt || error " Could not execute pivot_root due to missing \
command or wrong\n parameters given."
exec `which chroot` . sh -c 'rm -rf mnt/*; exec /sbin/init' \
<dev/console >dev/console 2>&1
|
