ia64/xen-unstable

view tools/examples/vif-bridge @ 13871:ed9dba8e2c67

Improve hotplug script error reporting via xenstore.

Use this to detect and report up-front in vif-bridge script whether
the bridge device exists or not.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
author kfraser@localhost.localdomain
date Wed Feb 07 16:22:55 2007 +0000 (2007-02-07)
parents b071319927b6
children f8819cb5f892
line source
1 #!/bin/bash
2 #============================================================================
3 # /etc/xen/vif-bridge
4 #
5 # Script for configuring a vif in bridged mode.
6 # The hotplugging system will call this script if it is specified either in
7 # the device configuration given to Xend, or the default Xend configuration
8 # in /etc/xen/xend-config.sxp. If the script is specified in neither of those
9 # places, then this script is the default.
10 #
11 # Usage:
12 # vif-bridge (add|remove|online|offline)
13 #
14 # Environment vars:
15 # vif vif interface name (required).
16 # XENBUS_PATH path to this device's details in the XenStore (required).
17 #
18 # Read from the store:
19 # bridge bridge to add the vif to (optional). Defaults to searching for the
20 # bridge itself.
21 # ip list of IP networks for the vif, space-separated (optional).
22 #
23 # up:
24 # Enslaves the vif interface to the bridge and adds iptables rules
25 # for its ip addresses (if any).
26 #
27 # down:
28 # Removes the vif interface from the bridge and removes the iptables
29 # rules for its ip addresses (if any).
30 #============================================================================
32 dir=$(dirname "$0")
33 . "$dir/vif-common.sh"
35 bridge=${bridge:-}
36 bridge=$(xenstore_read_default "$XENBUS_PATH/bridge" "$bridge")
38 if [ -z "$bridge" ]
39 then
40 bridge=$(brctl show | cut -d "
41 " -f 2 | cut -f 1)
43 if [ -z "$bridge" ]
44 then
45 fatal "Could not find bridge, and none was specified"
46 fi
47 fi
49 RET=0
50 ip link show $bridge 1>/dev/null 2>&1 || RET=1
51 if [ "$RET" -eq 1 ]
52 then
53 fatal "Could not find bridge device $bridge"
54 fi
56 case "$command" in
57 online)
58 setup_bridge_port "$vif"
59 add_to_bridge "$bridge" "$vif"
60 ;;
62 offline)
63 do_without_error brctl delif "$bridge" "$vif"
64 do_without_error ifconfig "$vif" down
65 ;;
66 esac
68 handle_iptable
70 log debug "Successful vif-bridge $command for $vif, bridge $bridge."
71 if [ "$command" = "online" ]
72 then
73 success
74 fi