- kill dhclient silently - cleanup and fix network config writeout to /run/initramfs/state Resolves: rhbz#799989 - various cleanups
323 lines
11 KiB
Diff
323 lines
11 KiB
Diff
From 25aa3c5a6eb48d14972b5c658cc7231d8f100ea8 Mon Sep 17 00:00:00 2001
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From: Will Woods <wwoods@redhat.com>
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Date: Tue, 6 Mar 2012 18:25:24 -0500
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Subject: [PATCH] network: refactor stuff from netroot/parse-ip-opts to
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net-lib
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Add new functions: all_ifaces_up, get_netroot_ip, ip_is_local, ifdown,
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setup_net, set_ifname, ibft_to_cmdline
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Use them in netroot.sh and parse-ip-opts.sh.
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There's also a couple little unrelated cleanups.
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---
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modules.d/40network/net-lib.sh | 108 ++++++++++++++++++++++++++++++++++
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modules.d/40network/netroot.sh | 71 ++--------------------
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modules.d/40network/parse-ip-opts.sh | 46 ++-------------
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3 files changed, 120 insertions(+), 105 deletions(-)
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diff --git a/modules.d/40network/net-lib.sh b/modules.d/40network/net-lib.sh
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index e3987a4..e51ce94 100644
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--- a/modules.d/40network/net-lib.sh
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+++ b/modules.d/40network/net-lib.sh
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@@ -31,3 +31,111 @@ iface_has_link() {
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[ "$(cat $interface/carrier)" = 1 ] || return 1
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# XXX Do we need to reset the flags here? anaconda never bothered..
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}
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+
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+all_ifaces_up() {
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+ local iface="" IFACES=""
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+ [ -e "/tmp/net.ifaces" ] && read IFACES < /tmp/net.ifaces
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+ for iface in $IFACES; do
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+ [ -e /tmp/net.$iface.up ] || return 1
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+ done
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+}
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+
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+get_netroot_ip() {
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+ local prefix="" server="" rest=""
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+ splitsep "$1" ":" prefix server rest
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+ case $server in
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+ [0-9]*\.[0-9]*\.[0-9]*\.[0-9]*) echo "$server"; return 0 ;;
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+ esac
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+ return 1
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+}
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+
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+ip_is_local() {
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+ strstr "$(ip route get $1 2>/dev/null)" " via "
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+}
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+
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+ifdown() {
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+ local netif="$1"
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+ # ip down/flush ensures that routing info goes away as well
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+ ip link set $netif down
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+ ip addr flush dev $netif
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+ echo "#empty" > /etc/resolv.conf
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+ # TODO: send "offline" uevent?
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+}
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+
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+setup_net() {
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+ local netif="$1" f="" gw_ip="" netroot_ip="" iface="" IFACES=""
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+ [ -e /tmp/net.$netif.up ] || return 1
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+ [ -e "/tmp/net.ifaces" ] && read IFACES < /tmp/net.ifaces
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+ [ -z "$IFACES" ] && IFACES="$netif"
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+ for iface in $IFACES ; do
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+ . /tmp/net.$iface.up
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+ done
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+ # run the scripts written by ifup
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+ [ -e /tmp/net.$netif.gw ] && . /tmp/net.$netif.gw
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+ [ -e /tmp/net.$netif.hostname ] && . /tmp/net.$netif.hostname
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+ [ -e /tmp/net.$netif.override ] && . /tmp/net.$netif.override
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+ [ -e /tmp/dhclient.$netif.dhcpopts ] && . /tmp/dhclient.$netif.dhcpopts
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+ # set up resolv.conf
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+ [ -e /tmp/net.$netif.resolv.conf ] && \
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+ cp -f /tmp/net.$netif.resolv.conf /etc/resolv.conf
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+
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+ # Handle STP Timeout: arping the default gateway.
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+ # (or the root server, if a) it's local or b) there's no gateway.)
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+ # Note: This assumes that if no router is present the
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+ # root server is on the same subnet.
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+
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+ # Get DHCP-provided router IP, or the cmdline-provided "gw=" argument
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+ [ -n "$new_routers" ] && gw_ip=${new_routers%%,*}
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+ [ -n "$gw" ] && gw_ip=$gw
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+
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+ # Get the "netroot" IP (if there's an IP address in there)
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+ netroot_ip=$(get_netroot_ip $netroot)
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+
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+ # try netroot if it's local (or there's no gateway)
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+ if ip_is_local $netroot_ip || [ -z "$gw_ip" ]; then
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+ dest="$netroot_ip"
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+ else
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+ dest="$gw_ip"
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+ fi
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+ if [ -n "$dest" ] && ! arping -q -f -w 60 -I $netif $dest ; then
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+ info "Resolving $dest via ARP on $netif failed"
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+ fi
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+}
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+
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+set_ifname() {
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+ local name="$1" mac="$2" num=0 n=""
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+ # if it's already set, return the existing name
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+ for n in $(getargs ifname=); do
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+ strstr "$n" "$mac" && echo ${n%%:*} && return
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+ done
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+ # otherwise, pick a new name and use that
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+ while [ -e /sys/class/$name$num ]; do num=$(($num+1)); done
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+ echo "ifname=$name$num:$mac" >> /etc/cmdline.d/45-ifname.conf
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+ echo "$name$num"
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+}
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+
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+ibft_to_cmdline() {
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+ local iface="" mac="" dev=""
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+ local dhcp="" ip="" gw="" mask="" hostname=""
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+ modprobe -q iscsi_ibft
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+ (
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+ for iface in /sys/firmware/ibft/ethernet*; do
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+ [ -e ${iface}/mac ] || continue
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+ mac=$(read a < ${iface}/mac; echo $a)
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+ [ -z "$ifname_mac" ] && continue
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+ dev=$(set_ifname ibft $ifname_mac)
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+ dhcp=$(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.d/40-ibft.conf
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+ # reread cmdline
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+ unset CMDLINE
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+}
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diff --git a/modules.d/40network/netroot.sh b/modules.d/40network/netroot.sh
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index c5ee84c..ac1c215 100755
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--- a/modules.d/40network/netroot.sh
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+++ b/modules.d/40network/netroot.sh
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@@ -3,14 +3,12 @@
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# ex: ts=8 sw=4 sts=4 et filetype=sh
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PATH=/usr/sbin:/usr/bin:/sbin:/bin
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-type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
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+command -v getarg >/dev/null || . /lib/dracut-lib.sh
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+command -v setup_net >/dev/null || . /lib/net-lib.sh
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# Huh? Empty $1?
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[ -z "$1" ] && exit 1
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-# Huh? No interface config?
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-[ ! -e /tmp/net.$1.up ] && exit 1
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-
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# [ ! -z $2 ] means this is for manually bringing up network
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# instead of real netroot; If It's called without $2, then there's
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# no sense in doing something if no (net)root info is available
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@@ -23,10 +21,7 @@ fi
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# Let's see if we have to wait for other interfaces
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# Note: exit works just fine, since the last interface to be
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# online'd should see all files
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-[ -e "/tmp/net.ifaces" ] && read IFACES < /tmp/net.ifaces
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-for iface in $IFACES ; do
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- [ -e /tmp/net.$iface.up ] || exit 1
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-done
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+all_ifaces_up || exit 1
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# Set or override primary interface
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netif=$1
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@@ -78,62 +73,13 @@ if [ -z "$2" ]; then
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fi
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# We're here, so we can assume that upping interfaces is now ok
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-[ -z "$IFACES" ] && IFACES="$netif"
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-for iface in $IFACES ; do
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- . /tmp/net.$iface.up
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-done
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-
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-[ -e /tmp/net.$netif.gw ] && . /tmp/net.$netif.gw
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-[ -e /tmp/net.$netif.hostname ] && . /tmp/net.$netif.hostname
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-[ -e /tmp/net.$netif.resolv.conf ] && cp -f /tmp/net.$netif.resolv.conf /etc/resolv.conf
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-
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-# Load interface options
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-[ -e /tmp/net.$netif.override ] && . /tmp/net.$netif.override
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-[ -e /tmp/dhclient.$netif.dhcpopts ] && . /tmp/dhclient.$netif.dhcpopts
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-
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-# Handle STP Timeout: arping the default router if root server is
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-# unknown or not local, or if not available the root server.
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-# Note: This assumes that if no router is present the
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-# root server is on the same subnet.
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-#
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-# TODO There's some netroot variants that don't (yet) have their
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-# server-ip netroot
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-
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-# Get router IP if set
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-[ -n "$new_routers" ] && gw_ip=${new_routers%%,*}
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-[ -n "$gw" ] && gw_ip=$gw
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-# Get root server IP if set
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-if [ -n "$netroot" ]; then
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- dummy=${netroot#*:}
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- dummy=${dummy%%:*}
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- case "$dummy" in
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- [0-9]*\.[0-9]*\.[0-9]*\.[0-9]*) netroot_ip=$dummy;;
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- esac
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-fi
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-# Default arping dest to router
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-dest="$gw_ip"
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-# Change to arping root server if appropriate
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-if [ -n "$netroot_ip" ]; then
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- if [ -z "$dest" ]; then
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- # no gateway so check root server
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- dest="$netroot_ip"
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- else
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- r=$(ip route get "$netroot_ip")
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- if ! strstr "$r" ' via ' ; then
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- # local root server, so don't arping gateway
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- dest="$netroot_ip"
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- fi
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- fi
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-fi
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-if [ -n "$dest" ] && ! arping -q -f -w 60 -I $netif $dest ; then
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- dinfo "Resolving $dest via ARP on $netif failed"
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-fi
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+setup_net $netif
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# exit in case manually bring up network
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[ -n "$2" ] && exit 0
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# Source netroot hooks before we start the handler
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-source_all $hookdir/netroot
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+source_hook netroot
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# Run the handler; don't store the root, it may change from device to device
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# XXX other variables to export?
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@@ -149,11 +95,6 @@ if $handler $netif $netroot $NEWROOT; then
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else
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warn "Mounting root via '$netif' failed"
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# If we're trying with multiple interfaces, put that one down.
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- # ip down/flush ensures that routeing info goes away as well
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- if [ -z "$BOOTDEV" ] ; then
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- ip link set $netif down
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- ip addr flush dev $netif
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- echo "#empty" > /etc/resolv.conf
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- fi
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+ [ -z "$BOOTDEV" ] && ifdown $netif
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fi
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exit 0
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diff --git a/modules.d/40network/parse-ip-opts.sh b/modules.d/40network/parse-ip-opts.sh
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index c97941e..7851329 100755
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--- a/modules.d/40network/parse-ip-opts.sh
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+++ b/modules.d/40network/parse-ip-opts.sh
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@@ -14,7 +14,8 @@
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# routing,dns,dhcp-options,etc.
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#
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-type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
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+command -v getarg >/dev/null || . /lib/dracut-lib.sh
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+command -v ibft_to_cmdline >/dev/null || . /lib/net-lib.sh
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# Check if ip= lines should be used
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if getarg ip= >/dev/null ; then
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@@ -52,50 +53,15 @@ if [ -n "$NEEDBOOTDEV" ] ; then
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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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- unset dev
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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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- break
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- fi
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- done
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- if [ -z "$dev" ]; then
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- ifname_if=ibft$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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-
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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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+# If ibft is requested, read ibft vals and write ip=XXX cmdline args
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+[ "ibft" = "$(getarg ip=)" ] && ibft_to_cmdline
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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 $p
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- # skip ibft
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+ # skip ibft since we did it above
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[ "$autoconf" = "ibft" ] && continue
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# We need to have an ip= line for the specified bootdev
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@@ -111,7 +77,7 @@ for p in $(getargs ip=); do
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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=$autoconf is currenty unsupported";;
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- none|off) \
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+ none|off)
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[ -z "$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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