diff options
Diffstat (limited to 'packages/openslug-init/openslug-init-0.10/initscripts/sysconfsetup')
| -rw-r--r-- | packages/openslug-init/openslug-init-0.10/initscripts/sysconfsetup | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/packages/openslug-init/openslug-init-0.10/initscripts/sysconfsetup b/packages/openslug-init/openslug-init-0.10/initscripts/sysconfsetup index e69de29bb2..1940b00ff8 100644 --- a/packages/openslug-init/openslug-init-0.10/initscripts/sysconfsetup +++ b/packages/openslug-init/openslug-init-0.10/initscripts/sysconfsetup @@ -0,0 +1,229 @@ +#!/bin/sh +# This script is run once when the system first boots. Its sole +# purpose is to create /etc/default/sysconf (the overall system +# configuration file) and other files derived from this. +# +# The script runs immediately after S10checkroot.sh - this is the +# point at which the rootfs will be mounted rw even if the kernel +# booted with it ro. +# +# rm or mv the file to run this again. If this is done the +# following configuration files will be rewritten: +# +# /etc/default/sysconf +# /etc/hostname +# /etc/defaultdomain +# /etc/network/interfaces +# /etc/resolv.conf +# +# /etc/default/functions contains useful utility functions - it's +# in a separate file so that it can be loaded by any script +. /etc/default/functions +# +config valid && test "$1" != reload && exit 0 +# +# Utility to deal with absence of DNS configuration +echodns(){ + local dns + if test $# -gt 0 + then + for dns in "$@" + do + echo "nameserver $dns" + done + fi +} +# +# The SysConf device must exist in /dev at this point for this script +# to work. +# +# It is important not to hard-wire the name of the device because of +# the posibility of changing the flash partition layout. +# +# The block device is used here because at present udev does not +# show the character devices +sysdev= +config valid || sysdev="$(mtblockdev SysConf)" +if test -n "$sysdev" -a -b "$sysdev" +then + # Read the defined part of SysConf into /etc/default/sysconf. + # SysConf has lines of two forms: + # + # [section] + # name=value + # + # In practice SysConf also contains other stuff, use the command: + # + # devio '<</dev/mtd1;cpb' + # + # to examine the current settings. The badly formatted stuff + # is removed (to be exact, the sed script selects only lines + # which match one of the two above). The lan interface, which + # defaults to ixp0, is changed to the correct value for openslug, + # eth0 + devio "<<$sysdev" cpb fb1,10 | sed -n '/^\[[^][]*\]$/p; + s/^lan_interface=ixp0$/lan_interface=eth0/; + /^[-a-zA-Z0-9_][-a-zA-Z0-9_]*=/p' >/etc/default/sysconf + # + # The SysConf must have a hardware id, if it doesn't it has + # probably been erased or never set in the first place and the + # hardware id is retrieved from the RedBoot partition. This is + # the only thing which cannot be defaulted. +fi +# +# Error recovery: no SysConf or invalid SysConf. Make a new one from the +# RedBoot hardware ID information. +# NOTE: this block of code overwrites the shell script arguments. +config valid || { + reddev="$(mtblockdev RedBoot)" + initmac= + if test -n "$reddev" -a -b "$reddev" + then + # The hardware id starts 80 bytes before the end of the + # block, the block ends (or should end) with the signature + # <4 bytes> sErCoMm <bytes> sErCoMm. Note that devio 'pf' + # empties the stack. + set -- $(devio "<<$reddev" ' + <= $80- + .= @ + pf %02X + A= 5 + $( 1 + A= @,A1- + pf :%02X + $) A + pn + <=f4+;cp7;pn + <=$7-;cp7;pn') + if test $# -eq 3 -a "$2" = sErCoMm -a "$3" = sErCoMm + then + initmac="$1" + fi + fi + # + # APEX: may need extra code to set initmac here. + # + if test -n "$initmac" + then + # + # Generate a complete /etc/default/sysconf based on just + # one number ;-) + { echo '[network]' + echo "hw_addr=$initmac" + } >/etc/default/sysconf + # + # See /etc/default/functions (the config function) for + # the derivation of the rest of the information. + fi +} +# +# The config function will now return the correct values - even if sysconf +# is still missing. 'config valid' says if valid configuration information +# is available. +# +# Set up the 'standard' files in the root file system (these couldn't be set +# up before because they depend on stuff which RedBoot puts into SysConf from +# the ID info on the specific machine - in particular the hardware address of +# eth0, which must be the one assigned for *this* box!) +# +# HOSTNAME: defaults to LGK<mac> i.e. something derived from +# the ethernet hardware. LinkSys documentation explains how +# to determine this. Set by the user in linksys setup software. +# DOMAINNAME: LinkSys puts this in w_d_name. +test -n "$(config host)" && config host >/etc/hostname +domain="$(config domain)" +test -n "$domain" && echo "$domain" >/etc/defaultdomain +# +# Ethernet information. This goes into /etc/network/interfaces, +# however this is only used for static setup (and this is not +# the default). With dhcp the openslug udhcp script, +# /etc/udhcpc.d/50default, loads the values from sysconf. The +# lan_interface config value must exist for the file to be +# overwritten here. +iface="$(config iface)" +if test -n "$iface" +then + boot="$(config boot)" + # Only dhcp and static are supported at present - bootp + # support requires installation of appropriate packages + # dhcp is the fail-safe + case "$boot" in + dhcp|static) ;; + *) boot=dhcp;; + esac + # + mac="$(config mac)" + ip="$(config ip)" + netmask="$(config netmask)" + gateway="$(config gateway)" + { + echo "# /etc/network/interfaces" + echo "# configuration file for ifup(8), ifdown(8)" + echo "#" + echo "# The loopback interface" + echo "auto lo" + echo "iface lo inet loopback" + echo "#" + echo "# The NSLU2 built-in ethernet" + echo "auto $iface" + echo "# Automatically generated from /etc/default/sysconf" + if config valid + then + echo "# The pre-up option must always be supplied, regardless" + echo "# of configuration, to set the hardware correctly." + echo "# Severe network problems may result if this option is" + echo "# removed." + c= + else + echo "# WARNING: improperly configured network interface." + echo "# WARNING: the pre-up line must be corrected or severe" + echo "# WARNING: network problems may result." + c='#' + mac='<WARNING: unknown hardware address>' + fi + echo "iface $iface inet $boot" + echo "${c} pre-up ifconfig $iface hw ether $mac" + # The following are ignored for DHCP but are harmless + test -n "$ip" && echo " address $ip" + test -n "$netmask" && echo " netmask $netmask" + test -n "$gateway" && echo " gateway $gateway" + } >/etc/network/interfaces +fi +# +# The DNS server information gives up to three nameservers, but this +# currently only binds in the first. +{ + test -n "$domain" && echo "search $domain" + echodns $(config dns) $(config dns1) $(config dns2) +} >/etc/resolv.conf +# +# Invalid config must be handled, do this by hacking /etc/motd. +if config valid +then + echo "Host name: $(config host)" + echo "Host ID: $mac" + echo "Network boot method: $boot" + case "$boot" in + static) echo "Host IP address: $ip";; + esac + echo "Use 'turnup init' to reset the configuration" + echo "Use 'turnup disk|nfs -i <device> options to initialise a non-flash root" + echo "Use 'turnup help' for more information" +else + echo "+=====================================================================+" + echo "| +-----------------------+ |" + echo "| | INITIALISATION FAILED | |" + echo "| +-----------------------+ |" + echo "| |" + echo "| This machine has been booted with a temporary ethernet id |" + echo "| The initialisation failed because the machine id was not available |" + echo "| within the flash memory of the NSLU2. You must run: |" + echo "| |" + echo "| turnup init |" + echo "| |" + echo "| To correct this problem. Severe network problems may occur if this |" + echo "| is not done. |" + echo "+=====================================================================+" +fi >/etc/motd + +exit 0 |