mirror of
https://github.com/dracutdevs/dracut.git
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c34130f705
[Harald Hoyer <harald@redhat.com>: replaced grep with strstr] [Harald Hoyer <harald@redhat.com>: handle multiple ifname= arguments]
167 lines
5.3 KiB
Bash
Executable File
167 lines
5.3 KiB
Bash
Executable File
#!/bin/sh
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# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
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# ex: ts=8 sw=4 sts=4 et filetype=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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type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
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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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if [ "ibft" = "$(getarg ip=)" ]; then
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modprobe iscsi_ibft
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num=0
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(
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for iface in /sys/firmware/ibft/ethernet*; do
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[ -e ${iface}/mac ] || continue
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ifname_mac=$(read a < ${iface}/mac; echo $a)
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[ -z "$ifname_mac" ] && continue
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for ifname in $(getargs ifname=); do
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if strstr "$ifname" "$ifname_mac"; then
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dev=${ifname%%:*}
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else
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ifname_if=ibft$num
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num=$(( $num + 1 ))
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echo "ifname=$ifname_if:$ifname_mac"
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dev=$ifname_if
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fi
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done
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dhcp=$(read a < ${iface}/dhcp; echo $a)
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if [ -n "$dhcp" ]; then
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echo "ip=$dev:dhcp"
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else
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ip=$(read a < ${iface}/ip-addr; echo $a)
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gw=$(read a < ${iface}/gateway; echo $a)
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mask=$(read a < ${iface}/subnet-mask; echo $a)
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hostname=$(read a < ${iface}/hostname; echo $a)
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echo "ip=$ip::$gw:$mask:$hostname:$dev:none"
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fi
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done
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) >> /etc/cmdline
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# reread cmdline
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unset CMDLINE
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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 $p
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# skip ibft
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[ "$autoconf" = "ibft" ] && continue
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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 "$mask" ] && \
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die "Sorry, automatic calculation of netmask is not yet supported"
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;;
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auto6);;
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dhcp|dhcp6|on|any) \
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[ -n "$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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