Provided that you are configuring them via DHCP. RARP, BOOTP, and static configuration are not written yet. Also, adding nic drivers really bloats the initrd. I am looking for feedback on these patches from people who actually implement booting over the network. This patch series does not include support for that yet -- you will not find nfsroot= handling, or booting to a fs supplied by dhcp yet. I do want to make it as easy as possible to add support for booting over the network, as well as making it easy for people to customize things to meet their site requirements. This patch series is also available as the network-configurability branch at http://git.fnordovax.org/dracut. It may be rebased without warning to keep it in sync with the rest of dracut. --- README | 6 +++++- dhclient-script | 24 ++++++++++++++++++++++++ hooks/kill-dhclient.sh | 2 ++ ifup | 20 ++++++++++++++++++++ modules/40network.sh | 7 +++++++ rules.d/60-net.rules | 1 + 6 files changed, 59 insertions(+), 1 deletions(-) diff --git a/README b/README index 1c377b4..6c70fc1 100644 --- a/README +++ b/README @@ -37,7 +37,11 @@ Some general rules for writing modules: * Generator modules should have a two digit numeric prefix -- they run in ascending sort order. Anything in the 90-99 range is stuff that dracut relies on, so try not to break those hooks. - * Generator modules and hooks must have a .sh extension. + * Generator modules and hooks must have a .sh extension. + * We have some breakpoints for debugging your hooks. If you pass 'break' + as a kernel parameter, the initramfs will drop to a shell just before + switching to a new root. You can pass 'break=hookpoint', and the initramfs + will break just before hooks in that hookpoint run. Also, there is an attempt to keep things as distribution-agnostic as possible. Every distribution has their own tool here and it's not diff --git a/dhclient-script b/dhclient-script new file mode 100755 index 0000000..0db5921 --- /dev/null +++ b/dhclient-script @@ -0,0 +1,24 @@ +#!/bin/sh +# very simple dhclient-script. All it cares about is bringing the interface +# up, and it does not even try to do anything else. + +case $reason in + PREINIT) ip link set "$interface" up ;; + BOUND) ipopts="$new_ip_address" + [ "$new_interface_mtu" ] && ip link set $interface mtu $new_interface_mtu + [ "$new_subnet_mask" ] && ipopts="$ipopts/$new_subnet_mask" + [ "$new_broadcast_address" ] && ipopts="$ipopts broadcast $new_broadcast_address" + ip addr add $ipopts dev $interface + [ "$new_routers" ] && ip route add default via ${new_routers%%,*} dev $interface + [ "$new_domain_name" ] && echo "domain $new_domain_name" > /etc/resolv.conf + if [ "$new_domain_search" ]; then + echo "search $new_domain_search" |sed 's/,//g' >> /etc/resolv.conf + elif [ "$new_domain_name" ]; then + echo "search $new_domain_name" >> /etc/resolv.conf + fi + ( IFS=","; + for s in $new_domain_name_servers; do + echo "nameserver $s" >> /etc/resolv.conf + done ) ;; + *) ;; +esac diff --git a/hooks/kill-dhclient.sh b/hooks/kill-dhclient.sh new file mode 100644 index 0000000..3dd3b43 --- /dev/null +++ b/hooks/kill-dhclient.sh @@ -0,0 +1,2 @@ +#!/bin/sh +kill $(pidof dhclient) \ No newline at end of file diff --git a/ifup b/ifup new file mode 100755 index 0000000..cf5828c --- /dev/null +++ b/ifup @@ -0,0 +1,20 @@ +#!/bin/sh +echo "$*" >>/dev/net-interfaces-found + +# loopback is always handled the same way +[ "$1" = "lo" ] && { + ip link set lo up + ip addr add 127.0.0.1/8 dev lo + exit 0 +} + +# spin through the kernel command line, looking for ip= lines +while read p; do + case $p in + 'ip=none'|'ip=off') exit 0;; # we were told to not configure anything + 'ip=dhcp'|'ip=on'|'ip=any') dhclient -nw "$1"; exit 0;; + 'ip=bootp'|'ip=rarp'|'ip=both') exit 0;; #dunno how to do this + ip=*) exit 0;; #to be written + *) continue;; + esac +done \ No newline at end of file diff --git a/modules/40network.sh b/modules/40network.sh new file mode 100755 index 0000000..3def154 --- /dev/null +++ b/modules/40network.sh @@ -0,0 +1,7 @@ +#!/bin/bash +dracut_install ip dhclient +inst "$dsrc/ifup" "/sbin/ifup" +inst "$dsrc/dhclient-script" "/sbin/dhclient-script" +instmods =networking ecb arc4 +inst_rules "$dsrc/rules.d/60-net.rules" +inst_hook pre-pivot 10 "$dsrc/hooks/kill-dhclient.sh" diff --git a/rules.d/60-net.rules b/rules.d/60-net.rules new file mode 100644 index 0000000..4b030c3 --- /dev/null +++ b/rules.d/60-net.rules @@ -0,0 +1 @@ +ACTION=="add", SUBSYSTEM=="net", RUN+="/sbin/ifup $env{INTERFACE}" -- 1.6.0.6 -- To unsubscribe from this list: send the line "unsubscribe initramfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
