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141 lines
4.3 KiB
141 lines
4.3 KiB
#!/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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# When supplying more than only ip= line, <interface> is mandatory and |
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# bootdev= must contain the name of the primary interface to use for |
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# routing,dns,dhcp-options,etc. |
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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=$7 ;; |
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esac |
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} |
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# Check if ip= lines should be used |
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if getarg ip= >/dev/null ; then |
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if [ -z "$netroot" ] ; then |
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echo "Warning: No netboot configured, ignoring ip= lines" |
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return; |
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fi |
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fi |
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# Don't mix BOOTIF=macaddr from pxelinux and ip= lines |
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getarg ip= >/dev/null && getarg BOOTIF= >/dev/null && \ |
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die "Mixing BOOTIF and ip= lines is dangerous" |
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# No more parsing stuff, BOOTIF says everything |
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[ -n "$(getarg BOOTIF)" ] && return |
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if [ -n "$netroot" ] && [ -z "$(getarg ip=)" ] ; then |
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# No ip= argument(s) for netroot provided, defaulting to DHCP |
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return; |
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fi |
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# Count ip= lines to decide whether we need bootdev= or not |
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if [ -z "$NEEDBOOTDEV" ] ; then |
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local count=0 |
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for p in $(getargs ip=); do |
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count=$(( $count + 1 )) |
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done |
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[ $count -gt 1 ] && NEEDBOOTDEV=1 |
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fi |
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# If needed, check if bootdev= contains anything usable |
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if [ -n "$NEEDBOOTDEV" ] ; then |
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BOOTDEV=$(getarg bootdev=) || die "Please supply bootdev argument for multiple ip= lines" |
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[ -z "$BOOTDEV" ] && die "Bootdev argument is empty" |
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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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for p in $(getargs ip=); do |
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ip_to_var $p |
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# We need to have an ip= line for the specified bootdev |
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[ -n "$NEEDBOOTDEV" ] && [ "$dev" = "$BOOTDEV" ] && BOOTDEVOK=1 |
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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 $autoconf in |
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error) die "Error parsing option 'ip=$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 'ip=$p'\nValue '$autoconf' without static configuration does not make sense" |
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[ -z "$mask" ] && \ |
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die "Sorry, automatic calculation of netmask is not yet supported" |
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;; |
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dhcp|on|any) \ |
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[ -n "$NEEDBOOTDEV" ] && [ -z "$dev" ] && \ |
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die "Sorry, 'ip=$p' does not make sense for multiple interface configurations" |
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[ -n "$ip" ] && \ |
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die "For argument 'ip=$p'\nSorry, setting client-ip does not make sense for '$autoconf'" |
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;; |
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*) die "For argument 'ip=$p'\nSorry, unknown value '$autoconf'";; |
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esac |
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if [ -n "$dev" ] ; then |
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# We don't like duplicate device configs |
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if [ -n "$IFACES" ] ; then |
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for i in $IFACES ; do |
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[ "$dev" = "$i" ] && die "For argument 'ip=$p'\nDuplication configurations for '$dev'" |
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done |
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fi |
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# IFACES list for later use |
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IFACES="$IFACES $dev" |
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fi |
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# Small optimization for udev rules |
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[ -z "$NEEDBOOTDEV" ] && [ -n "$dev" ] && BOOTDEV=$dev |
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# Do we need to check for specific options? |
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if [ -n "$NEEDDHCP" ] || [ -n "$DHCPORSERVER" ] ; then |
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# Correct device? (Empty is ok as well) |
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[ "$dev" = "$BOOTDEV" ] || continue |
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# Server-ip is there? |
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[ -n "$DHCPORSERVER" ] && [ -n "$srv" ] && continue |
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# 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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[ -z "$ip" ] && continue |
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# Not good! |
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die "Server-ip or dhcp for netboot needed, but current arguments say otherwise" |
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fi |
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done |
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# This ensures that BOOTDEV is always first in IFACES |
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if [ -n "$BOOTDEV" ] && [ -n "$IFACES" ] ; then |
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IFACES="${IFACES%$BOOTDEV*} ${IFACES#*$BOOTDEV}" |
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IFACES="$BOOTDEV $IFACES" |
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fi |
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# Store BOOTDEV and IFACES for later use |
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[ -n "$BOOTDEV" ] && echo $BOOTDEV > /tmp/net.bootdev |
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[ -n "$IFACES" ] && echo $IFACES > /tmp/net.ifaces |
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# We need a ip= line for the configured bootdev= |
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[ -n "$NEEDBOOTDEV" ] && [ -z "$BOOTDEVOK" ] && die "Bootdev Argument '$BOOTDEV' not found"
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