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91 lines
2.5 KiB
91 lines
2.5 KiB
16 years ago
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#!/bin/sh
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#
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# Format:
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# ip=[dhcp|on|any]
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#
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# ip=<interface>:[dhcp|on|any]
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#
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# ip=<client-IP-number>:<server-id>:<gateway-IP-number>:<netmask>:<client-hostname>:<interface>:[dhcp|on|any|none|off]
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#
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# Sadly there's no easy way to split ':' separated lines into variables
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ip_to_var() {
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local v=${1}:
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set --
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while [ -n "$v" ]; do
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set -- "$@" "${v%%:*}"
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v=${v#*:}
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done
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unset ip srv gw mask hostname dev autoconf
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case $# in
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0) autoconf="error" ;;
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1) autoconf=$1 ;;
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2) dev=$1; autoconf=$2 ;;
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*) ip=$1; srv=$2; gw=$3; mask=$4; hostname=$5; dev=$6; autoconf=$7 ;;
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esac
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}
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# Warn if defaulting to ip=dhcp
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if [ -n "$netroot" ] && [ -z "$(getarg ip=)" ] ; then
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warn "No ip= argument(s) for netroot provided, defaulting to DHCP"
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return;
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fi
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# Check ip= lines
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# XXX Would be nice if we could errorcheck ip addresses here as well
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[ "$CMDLINE" ] || read CMDLINE < /proc/cmdline
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for p in $CMDLINE; do
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[ -n "${p%ip=*}" ] && continue
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ip_to_var ${p#ip=}
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# Empty autoconf defaults to 'dhcp'
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if [ -z "$autoconf" ] ; then
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warn "Empty autoconf values default to dhcp"
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autoconf="dhcp"
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fi
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# Error checking for autoconf in combination with other values
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case $autoconf in
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error) die "Error parsing option '$p'";;
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bootp|rarp|both) die "Sorry, ip=$autoconf is currenty unsupported";;
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none|off) \
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[ -z "$ip" ] && \
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die "For argument '$p'\nValue '$autoconf' without static configuration does not make sense"
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[ -z "$mask" ] && \
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die "Sorry, automatic calculation of netmask is not yet supported"
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;;
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dhcp|on|any) \
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[ -n "$ip" ] && \
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die "For argument '$p'\nSorry, setting client-ip does not make sense for '$autoconf'"
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;;
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*) die "For argument '$p'\nSorry, unknown value '$autoconf'";;
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esac
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# We don't like duplicate device configs
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if [ -n "$dev" ] ; then
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if [ -n "$IFACES" ] ; then
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for i in $IFACES ; do
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[ "$dev" = "$i" ] && die "For argument '$p'\nDuplication configurations for '$dev'"
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done
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fi
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IFACES="$IFACES $dev"
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fi
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# Do we need DHCP? (It's simpler to check for a set ip. Checks above ensure that if
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# ip is there, we're static)
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[ -n "$NEEDDHCP" ] && [ -z "$ip" ] && DHCPOK="1"
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# Do we need srv OR dhcp?
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if [ -n "$DHCPORSERVER" ] ; then
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[ -n "$DHCPOK" ] && SRVOK="1"
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[ -n "$srv" ] && SRVOK="1"
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fi
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done
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[ -n "$NEEDDHCP" ] && [ -z "$DHCPOK" ] && die "Server-ip or dhcp for netboot needed, but current arguments say otherwise"
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[ -n "$DHCPORSERVER" ] && [ -z "$SRVOK" ] && die "Server-ip or dhcp for netboot needed, but current arguments say otherwise"
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